1. A suspension frame with two series springs is characterized in that the suspension frame with two series springs comprises:

a frame (10);

a first superconducting magnet (20) and a second superconducting magnet (30), the first superconducting magnet (20) and the second superconducting magnet (30) for interacting with coils within a train track to generate a propulsion force, a levitation force, and a guidance force;

a reed assembly (40), by which the first superconducting magnet (20) is disposed on one side of the frame (10), and by which the second superconducting magnet (30) is disposed on the other side of the frame (10);

a first tied spring (50) and a second tied spring (60), the first tied spring (50) being disposed at a position intermediate one side of the frame (10), the second tied spring (60) being disposed at a position intermediate the other side of the frame (10), the first tied spring (50) and the second tied spring (60) being disposed symmetrically with respect to a center line of the frame (10) in a first direction;

the suspension frame limit stop assembly (70), the suspension frame limit stop assembly (70) is arranged on the framework (10), the suspension frame limit stop assembly (70) is used for being matched with a vehicle body limit stop assembly on a vehicle body to limit the two series spring suspension frames to move along a second direction and a third direction relative to the vehicle body, and the first direction, the second direction and the third direction are perpendicular to each other;

wherein the first and second tie springs (50, 60) are disposed at a hinge position of the first and second vehicle bodies and are configured to provide a support effect to both sides of the first or second vehicle body when the first and second vehicle bodies are hingedly connected.

2. Two suspension spring according to claim 1, wherein the first (50) and second (60) suspension springs comprise round steel springs or air springs.

3. The suspension bracket as claimed in claim 2, wherein the first tie spring assembly (40) comprises a first tie spring, a second tie spring, a third tie spring and a fourth tie spring, the first tie spring and the second tie spring are arranged on one side of the frame (10) along a first direction, one end of the first superconducting magnet (20) is mounted on one side of the frame (10) through the first tie spring, and the other end of the first superconducting magnet (20) is mounted on one side of the frame (10) through the second tie spring; the third and fourth tie springs are disposed at the other side of the frame (10) in a first direction, one end of the second superconducting magnet (30) is mounted at one side of the frame (10) through the third tie spring, and the other end of the second superconducting magnet (30) is mounted at the other side of the frame (10) through the fourth tie spring.

4. A two-system spring suspension according to any of claims 1 to 3 further comprising a support wheel assembly (80) and a guide wheel assembly (90), the support wheel assembly (80) and the guide wheel assembly (90) being disposed on the frame (10), the support wheel assembly (80) being for supporting a vehicle body, and the guide wheel assembly (90) being for guiding the vehicle body.

5. Magnetic levitation vehicle, comprising a two-system spring suspension (1000) according to any of claims 1 to 4.

6. The maglev train of claim 5, wherein the suspension limit stop assemblies (70) of the two-system-spring suspensions (1000) comprise a first suspension vertical limit stop (701a), a first suspension lateral limit stop (702a), a second suspension vertical limit stop (703a), and a second suspension lateral limit stop (704a), wherein the first suspension vertical limit stop (701a) and the first suspension lateral limit stop (702a) are spaced apart on one side of the frame (10), and the second suspension vertical limit stop (703a) and the second suspension lateral limit stop (704a) are spaced apart on the other side of the frame (10); the train body of maglev train includes the vertical spacing backstop of first train body, the horizontal spacing backstop of first train body, the vertical spacing backstop of second train body and the horizontal spacing backstop of second train body, the vertical spacing backstop of first suspension (701a) with the vertical spacing backstop of first train body cooperatees and the vertical spacing backstop of second suspension (703a) with the vertical spacing backstop of second train body cooperatees in order to restrict two second system suspensions for the removal of automobile body along the second direction, the horizontal spacing backstop of first suspension (702a) with the horizontal spacing backstop of first train body cooperatees and the horizontal spacing backstop of second suspension (704a) with the horizontal spacing backstop of second train body cooperatees in order to restrict two second system suspensions are for the automobile body along the removal of third direction.

7. The maglev train of claim 6, wherein the first body vertical limit stop comprises a first body vertical stop and a second body vertical stop spaced apart, the first suspension vertical limit stop (701a) being disposed between the first body vertical stop and the second body vertical stop; the second vehicle body vertical limit stop comprises a third vehicle body vertical stop block and a fourth vehicle body vertical stop block which are arranged at intervals, and the second suspension frame vertical limit stop (703a) is arranged between the third vehicle body vertical stop block and the fourth vehicle body vertical stop block.

8. The maglev train of claim 5, wherein the suspension limit stop assemblies (70) of the two-system-spring suspensions (1000) comprise a first suspension vertical limit stop (701b) and a second suspension vertical limit stop (702b), the first suspension vertical limit stop (701b) being disposed on one side of the frame (10), the second suspension vertical limit stop (702b) being disposed on the other side of the frame (10); the maglev train comprises a first train body vertical and horizontal limit stop and a second train body vertical and horizontal limit stop, wherein the first suspension frame vertical and horizontal limit stop (701b) is matched with the first train body vertical and horizontal limit stop, and the second suspension frame vertical and horizontal limit stop (702b) is matched with the second train body vertical and horizontal limit stop to limit the two-system suspension frames to move along a second direction and a third direction relative to the train body.

9. The maglev train of claim 8, wherein the first train body vertical and horizontal limit stops comprise a first horizontal baffle, a first vertical baffle and a second vertical baffle which are connected in sequence, the first vertical baffle and the second vertical baffle are arranged in parallel along a horizontal plane, and the first suspension frame vertical and horizontal limit stop (701b) is arranged between the first vertical baffle and the second vertical baffle to limit the movement of the two suspension frames relative to the train body along a second direction; the second vehicle body hangs down horizontal spacing backstop including the second horizontal baffle, the vertical baffle of third and the vertical baffle of fourth that connect gradually, the vertical baffle of third with the vertical baffle of fourth is along horizontal plane parallel arrangement, the second suspension hangs down horizontal spacing backstop (702b) and sets up the vertical baffle of third with the removal of limiting two systems of suspensions for the automobile body along the second direction between the vertical baffle of fourth, first horizontal baffle with first suspension hangs down horizontal spacing backstop (701b) and cooperatees and the second horizontal baffle with the second suspension hangs down horizontal spacing backstop (702b) and cooperatees and follows the removal of third direction for the automobile body for the two systems of suspensions.

10. Magnetic levitation train according to claim 5, comprising a head train body (2000), a tail train body (3000), a plurality of intermediate train bodies (4000) and a plurality of two-system spring suspensions (1000), head car automobile body (2000), a plurality of intermediate car body (4000) with tail car automobile body (3000) are articulated in proper order and are connected, and are a plurality of two series spring suspension (1000) set gradually the head end bottom of head car automobile body (2000) with be close to head car automobile body (2000) intermediate car body (4000) articulated position, a plurality of in the intermediate car body (4000) articulated position, be close to in the intermediate car body (4000) two arbitrary intermediate car body (4000) articulated position, be close to tail car automobile body (3000) intermediate car body (4000) with tail car automobile body (3000) articulated position and tail end bottom of tail car automobile body (3000).

Background

In order to further increase the running speed of the train, after the wheel-track train, magnetic levitation trains have been invented, and currently, two magnetic levitation systems in the world are suitable for commercial operation, one is an electromagnetic levitation system (EMS) represented by the shanghai demonstration line, and the other is an electric levitation system (EDS) represented by the japanese sorb line.

The EDS train mainly comprises a train body and a traveling part, wherein the train body is a passenger riding space, the traveling part is positioned below the train body, the train body is supported by an air spring or a steel spring (an air spring or a steel spring for supporting the train body on the traveling part is called a secondary spring in the industry) and plays a role in buffering and damping, and the traveling part used by the magnetic suspension train is called a suspension frame.

Each suspension bracket of the electric suspension train is also provided with 2 superconducting magnets, 4 supporting wheels and 4 guide wheels. Two superconducting magnets are respectively arranged on the left side and the right side of the suspension frame, 4 superconducting coils are arranged in each superconducting magnet, 4 magnetic poles are formed when the coils are electrified, the magnetic poles and the propelling coils arranged on the left side and the right side of the track form a rotor and a stator of the linear motor together, and the suspension frame can be pushed to advance or brake the whole train after currents with certain frequency and intensity are introduced into the propelling coils. In addition, suspension guide coils are installed on the left and right sides of the track, when the train moves, magnetic lines of force of the superconducting magnets installed on the left and right sides of the suspension frame cut the suspension guide coils, a magnetic field is generated in the suspension guide coils, and a mutual electromagnetic force action is generated between the magnetic field of the superconductor and the magnetic field of the suspension guide coils, and when the train reaches a certain speed, the electromagnetic force is strong enough to provide a suspension force and a guide force for the train, as shown in fig. 15(a) to 15 (c). When the train is at rest or runs at low speed, the supporting wheels and the guiding wheels are required to provide vertical supporting force and horizontal guiding force for the train.

In order to solve the problem, 4 superconducting coils in each superconducting magnet are grouped in pairs and respectively encapsulated in two sealing devices (called Dewar in the industry) which provide the low-temperature environment, so that when one coil is out of time, only the other coil in the same Dewar is out of time, the two coils encapsulated in the other Dewar are not influenced and can still work normally.

Even so, when two coils on a suspension frame lose time, it is equivalent to that the suspension frame loses 1/4's levitation force and guiding force, and the suspension frame atress is unbalanced again, if the mechanical correlation design between suspension frame and the automobile body is improper, very easily leads to the suspension frame to take place to touch with the track, can cause serious safety problem to the train of high-speed operation.

In recent years, people begin to consider placing the magnetic suspension train in a vacuum pipeline, and the magnetic suspension train can achieve higher running speed due to extremely low air density in the vacuum pipeline. It is clear that the safety problems of the operation of magnetic levitation trains operating in a vacuum environment at higher speeds are more important.

At present, as shown in fig. 16(a) to 16(c), the basic configuration of a suspension used for a japanese sorbwire high speed magnetic levitation train includes: a frame (fig. 17(a) to 17(c)), a support wheel device (fig. 19(a) to 19(c)), a guide wheel device (fig. 20(a) to 20(c)), a secondary spring, a primary spring, and a superconducting magnet (fig. 18(a) to 18 (c)).

The suspension is typically characterized by having 4 two series springs, each two series spring of the 4 series springs are used for supporting an adjacent car body, and the two adjacent car bodies are connected by a coupler, as shown in fig. 21(a) and 21 (b).

The two-spring suspension frame has 4 two springs, each of which is a group and supports two adjacent vehicle bodies, as shown in fig. 21(a) and 21(b), and the two adjacent vehicle bodies are vertically supported by the two suspensions, so that the two vehicle bodies can only be connected by a car coupler and cannot be designed to be in a hinged mode. The term "articulated" means that after two adjacent vehicle bodies are connected by some mechanism (called an articulation device), the two adjacent vehicle bodies can only rotate relatively, and there is no relative translational degree of freedom (if an elastic element is provided in the articulation device, the translational motion amplitude that can occur between the two vehicle bodies is only the deformation of the elastic element).

There are 5 degrees of freedom of relative movement between two adjacent car bodies using coupler interconnection: relative to the twisting motion about the X-axis, the yawing motion about the Y-axis, the pitching motion about the Z-axis, and the up-and-down play along the Y-axis, the lateral shifting motion along the Z-axis, wherein the slewing motion about the X, Y, Z-axis is necessary for train operation, and the up-and-down play along the Y-axis, the lateral shifting motion along the Z-axis is not necessary, as shown in fig. 22(a) and 22 (b).

For an EDS-type maglev train, when two superconducting coils in a dewar on a suspension frame lose time, the suspension frame loses balance instantly, and due to relative freedom degrees of vertical movement and transverse movement between two train bodies connected by a coupler, the two train bodies cannot provide a safety restriction limiting function for the suspension frame, the suspension frame inevitably collides with a track, thereby bringing great traffic safety hidden danger.

Fig. 23(a) shows the motion of the suspension and the vehicle body when the two superconducting coils in the superconducting magnet are quenched from the side view direction, and it can be seen that the vehicle body cannot provide a restraint for the quenched suspension in the vertical direction, and conversely the vehicle body falls along with the falling of one end of the suspension.

Fig. 23(b) shows the motion of the suspension and the vehicle body when two superconducting coils in the superconducting magnet are quenched when viewed from the top, and it can be seen that in the transverse direction, the vehicle body cannot provide a restraint for the quenched suspension, but instead the vehicle body moves in a transverse direction along with the violent transverse movement of one end of the suspension.

Disclosure of Invention

The invention provides a suspension frame with two series springs and a magnetic suspension train with the suspension frame, which can solve the technical problem of poor safety of the train in high-speed operation caused by quench of part of superconducting coils on the suspension frame in the prior art.

According to an aspect of the present invention, there is provided a two-system spring suspension, comprising: a frame; the first superconducting magnet and the second superconducting magnet are used for interacting with coils in the train track to generate propelling force, levitation force and guiding force; the first superconducting magnet is arranged on one side of the framework through the spring tying assembly, and the second superconducting magnet is arranged on the other side of the framework through the spring tying assembly; the first secondary spring is arranged in the middle of one side of the framework, the second secondary spring is arranged in the middle of the other side of the framework, and the first secondary spring and the second secondary spring are symmetrically arranged relative to the center line of the framework along the first direction; the suspension frame limit stop component is arranged on the framework and used for being matched with the vehicle body limit stop component on the vehicle body to limit the two secondary spring suspension frames to move along a second direction and a third direction relative to the vehicle body, and the first direction, the second direction and the third direction are perpendicular to each other; when the first vehicle body and the second vehicle body are hinged, the first series spring and the second series spring are arranged at the hinged position of the first vehicle body and the second vehicle body and are used for providing a supporting effect for two sides of the first vehicle body or the second vehicle body.

Further, the first and second tie springs each include a round steel spring or an air spring.

Furthermore, the first tied spring assembly comprises a first tied spring, a second tied spring, a third tied spring and a fourth tied spring, the first tied spring and the second tied spring are arranged on one side of the framework along the first direction, one end of the first superconducting magnet is installed on one side of the framework through the first tied spring, and the other end of the first superconducting magnet is installed on one side of the framework through the second tied spring; the third series spring and the fourth series spring are arranged on the other side of the framework along the first direction, one end of the second superconducting magnet is installed on one side of the framework through the third series spring, and the other end of the second superconducting magnet is installed on the other side of the framework through the fourth series spring.

Furthermore, the two-series-spring suspension frame further comprises a supporting wheel assembly and a guide wheel assembly, wherein the supporting wheel assembly and the guide wheel assembly are both arranged on the framework, the supporting wheel assembly is used for supporting the vehicle body, and the guide wheel assembly is used for guiding the vehicle body.

According to another aspect of the present invention there is provided a magnetic levitation train comprising a two-system spring suspension as described above.

Furthermore, the suspension frame limit stop components of the two secondary spring suspension frames comprise a first suspension frame vertical limit stop, a first suspension frame transverse limit stop, a second suspension frame vertical limit stop and a second suspension frame transverse limit stop, the first suspension frame vertical limit stop and the first suspension frame transverse limit stop are arranged on one side of the frame at intervals, and the second suspension frame vertical limit stop and the second suspension frame transverse limit stop are arranged on the other side of the frame at intervals; the magnetic suspension train body comprises a first train body vertical limiting stop, a first train body transverse limiting stop, a second train body vertical limiting stop and a second train body transverse limiting stop, the first suspension frame vertical limiting stop is matched with the first train body vertical limiting stop, the second suspension frame vertical limiting stop is matched with the second train body vertical limiting stop to limit the movement of the two-system suspension frame relative to the train body along the second direction, the first suspension frame transverse limiting stop is matched with the first train body transverse limiting stop, and the second suspension frame transverse limiting stop is matched with the second train body transverse limiting stop to limit the movement of the two-system suspension frame relative to the train body along the third direction.

Furthermore, the first vehicle body vertical limiting stop comprises a first vehicle body vertical stop block and a second vehicle body vertical stop block which are arranged at intervals, and the first suspension frame vertical limiting stop is arranged between the first vehicle body vertical stop block and the second vehicle body vertical stop block; the vertical spacing backstop of second automobile body includes the vertical dog of third automobile body and the vertical dog of fourth automobile body that the interval set up, and the vertical spacing backstop of second floating frame sets up between the vertical dog of third automobile body and the vertical dog of fourth automobile body.

Furthermore, the suspension frame limiting and stopping assembly of the two secondary spring suspension frames comprises a first suspension frame vertical and horizontal limiting and stopping component and a second suspension frame vertical and horizontal limiting and stopping component, the first suspension frame vertical and horizontal limiting and stopping component is arranged on one side of the framework, and the second suspension frame vertical and horizontal limiting and stopping component is arranged on the other side of the framework; the maglev train body comprises a first train body vertical and horizontal limiting stop and a second train body vertical and horizontal limiting stop, wherein the first suspension frame vertical and horizontal limiting stop is matched with the first train body vertical and horizontal limiting stop, and the second suspension frame vertical and horizontal limiting stop is matched with the second train body vertical and horizontal limiting stop to limit the two suspension frames to move along a second direction and a third direction relative to the train body.

Furthermore, the first vertical and horizontal limiting stop of the vehicle body comprises a first horizontal baffle, a first vertical baffle and a second vertical baffle which are sequentially connected, the first vertical baffle and the second vertical baffle are arranged in parallel along a horizontal plane, and the first suspension frame vertical and horizontal limiting stop is arranged between the first vertical baffle and the second vertical baffle so as to limit the two suspension frames to move along a second direction relative to the vehicle body; the second vehicle body vertical transverse limiting stop comprises a second transverse baffle, a third vertical baffle and a fourth vertical baffle which are sequentially connected, the third vertical baffle and the fourth vertical baffle are arranged along the horizontal plane in parallel, the second suspension frame vertical transverse limiting stop is arranged between the third vertical baffle and the fourth vertical baffle to limit the movement of the two-system suspension frame relative to the vehicle body along the second direction, the first transverse baffle is matched with the first suspension frame vertical transverse limiting stop, and the second transverse baffle is matched with the second suspension frame vertical transverse limiting stop to limit the movement of the two-system suspension frame relative to the vehicle body along the third direction.

Furthermore, the magnetic suspension train comprises a head train body, a tail train body, a plurality of middle train bodies and a plurality of two-system spring suspension frames, wherein the head train body, the plurality of middle train bodies and the tail train body are sequentially hinged, and the two-system spring suspension frames are sequentially arranged at the bottom of the head end of the head train body, the hinged position of the head train body and the middle train body close to the head train body, the hinged position of any two middle train bodies in the plurality of middle train bodies, the hinged position of the middle train body close to the tail train body and the hinged position of the tail train body and the bottom of the tail end of the tail train body.

The suspension frame is provided with two series springs, the two series springs are arranged in the middle of the suspension frame, the suspension frame is provided with the limiting stop assembly, the carriages of the adjacent vehicle bodies are connected in a hinged mode, the two series springs only directly support the carriage of one vehicle body, after a part of superconducting coils of one superconducting magnet are quenched, the electromagnetic suspension force and the guiding force borne by the suspension frame are not balanced, and relative dislocation along the transverse direction (Z axis and the third direction) and movement along the vertical direction (Y axis and the second direction) do not occur between the adjacent carriages, so that the amplitude of various rotary motions of the suspension frame is very limited, and the suspension frame can still keep a positive position state. Therefore, the suspension frame cannot generate sliding friction and collision with the track under the condition that part of the superconducting coils are quenched, and the safety of high-speed running of the magnetic suspension train is improved.

Drawings

1(a) -1 (c) show front, top and side views of a two-wire suspension provided in accordance with a first embodiment of the present invention;

2(a) to 2(c) show front, top and side views of a frame of a two-system spring suspension provided in accordance with a first embodiment of the present invention;

FIG. 3(a) shows a side view of a suspension limit stop assembly provided in accordance with a first embodiment of the present invention in cooperation with a vehicle body limit stop assembly;

FIG. 3(b) shows a top view of a suspension limit stop assembly provided in accordance with a first embodiment of the present invention in cooperation with a vehicle body limit stop assembly;

4(a) through 4(c) show front, top and side views of a two-system spring suspension provided in accordance with a second embodiment of the present invention;

5(a) through 5(c) show front, top and side views of a frame of a two-system spring suspension provided in accordance with a second embodiment of the present invention;

FIG. 6(a) shows a side view of a suspension limit stop assembly provided in accordance with a second embodiment of the present invention in cooperation with a vehicle body limit stop assembly;

FIG. 6(b) shows a cross-sectional view at C-C of the suspension limit stop assembly provided in FIG. 6(a) in cooperation with a body limit stop assembly;

figures 7(a) and 7(b) show side and top views of a magnetic levitation train having a two-system spring suspension provided in accordance with a third embodiment of the present invention;

figures 8(a) and 8(b) show side and top views of a magnetic levitation vehicle having a two-system spring suspension provided in accordance with a third embodiment of the present invention;

figures 9(a) and 9(b) show side and top views of a magnetic levitation train provided in accordance with a third embodiment of the present invention, with two suspension springs mounted thereon;

figures 10(a) and 10(b) show side and top views of a magnetic levitation train having a two-system spring suspension provided in accordance with a fourth embodiment of the present invention;

figures 11(a) and 11(b) show side and top views of a magnetic levitation vehicle having a two-system spring suspension provided in accordance with a fourth embodiment of the present invention;

figure 12 is a schematic illustration of the relationship between adjacent bodies and suspensions of a magnetic levitation train provided in accordance with an embodiment of the present invention;

FIG. 13 is a side view of a shop-hinged connection provided in accordance with an exemplary embodiment of the present invention for maintaining the attitude of a malfunctioning suspension;

FIG. 14 illustrates a top view of the manner in which the articulated connection of the plant to the suspension is provided to maintain the attitude of the failed suspension;

fig. 15(a) to 15(c) are front, top and side views showing a superconducting magnet on an EDS-system maglev train suspension provided in the prior art and electromagnetic force to which the superconducting magnet is subjected;

figures 16(a) to 16(c) show front, top and side views of a japanese sorbwire high speed magnetic levitation chassis provided in the prior art;

17(a) to 17(c) show front, top and side views of the framework of a Japanese sorbwire high speed magnetic levitation chassis provided in the prior art;

fig. 18(a) to 18(c) show front, top and side views of a superconducting magnet of a japanese sorbwire high speed magnetic levitation mount provided in the prior art;

figures 19(a) to 19(c) show front, top and side views of a levitation chassis support wheel arrangement of a japanese sorbwire high speed magnetic levitation chassis provided in the prior art;

figures 20(a) to 20(c) show front, top and side views of a levitation chassis guide wheel arrangement of a japanese sorbwire high speed magnetic levitation chassis provided in the prior art;

FIGS. 21(a) and 21(b) show side and top views of two adjacent vehicle bodies in relation to a suspension provided by a prior art mounted four-two spring suspension train;

FIGS. 22(a) and 22(b) are schematic diagrams illustrating vertical and lateral relative play between two bodies coupled using a coupler as provided in the prior art;

fig. 23(a) and 23(b) show side and top views of the kinematic attitude of two superconducting coils in a dewar for 4 two-system spring suspensions provided in the prior art.

Wherein the figures include the following reference numerals:

10. a frame; 11. a first side member; 12. a second side member; 10a, a tie spring mounting interface; 10b, a second series spring mounting interface; 10c, installing an interface for a guide wheel; 10d, supporting wheel mounting interfaces; 20. a first superconducting magnet; 30. a second superconducting magnet; 40. a spring tying member; 50. a first secondary spring; 60. a second tie spring; 70. a suspension frame limit stop component; 701a, vertically limiting and stopping a first suspension frame; 702a, transversely limiting and stopping a first suspension frame; 703a, vertically limiting and stopping the second suspension frame; 704a, a second suspension frame transverse limit stop; 701b, vertically and transversely limiting and stopping the first suspension frame; 702b, vertically and transversely limiting and stopping the second suspension frame; 80. a support wheel assembly; 90. a guide wheel assembly; 100. a support bar; 1000. two series spring suspension frames; 2000. a head car body; 3000. a trailer body; 4000. an intermediate vehicle body; 5000. a hinge device; 4001a, a first vehicle body vertical limiting stop; 4001a1, a first vehicle body vertical stop; 4001a2, a second body vertical stop; 4002a and a first vehicle body transverse limiting stop; 4003a and a second vehicle body vertical limit stop; 4003a1, a third vertical body stop; 4003a2, a fourth body vertical stop; 4004a and a second vehicle body transverse limit stop; 4001b, a first vehicle body vertical transverse limiting stop; 4001b1, a first transverse baffle; 4001b2, a first vertical baffle; 4001b3, a second vertical baffle; 4002b and a second vehicle body vertical and transverse limiting stop; 4002b1, a second transverse baffle; 4002b2, a third vertical baffle; 4002b3, fourth vertical baffle; 4003a, a first vehicle body second spring mounting interface; 4003b and a second vehicle body second spring mounting interface.

Detailed Description

As shown in fig. 1(a) to 6(b), according to an embodiment of the present invention, there is provided a two-system spring suspension including a frame 10, a first superconducting magnet 20, a second superconducting magnet 30, a system spring assembly 40, a first system spring 50, a second system spring 60, and a suspension limit stop assembly 70, the first superconducting magnet 20 and the second superconducting magnet 30 being used to interact with a coil in a train track to generate a propelling force, a levitation force, and a guiding force, the first superconducting magnet 20 being disposed on one side of the frame 10 through the system spring assembly 40, the second superconducting magnet 30 being disposed on the other side of the frame 10 through the system spring assembly 40, the first system spring 50 being disposed at a middle position on one side of the frame 10, the second system spring 60 being disposed at a middle position on the other side of the frame 10, the first system spring 50 and the second system spring 60 being symmetrically disposed with respect to a center line of the frame 10 in a first direction, the suspension frame limit stop assembly 70 is arranged on the framework 10, the suspension frame limit stop assembly 70 is used for being matched with a vehicle body limit stop assembly on a vehicle body so as to limit the two suspension frames with two series springs to move along a second direction and a third direction relative to the vehicle body, and the first direction, the second direction and the third direction are perpendicular to each other; wherein the first and second garter springs 50 and 60 are disposed at the hinge position of the first and second bodies and are used to provide a support effect to both sides of the first or second body when the first and second bodies are hingedly connected.

By applying the configuration mode, the two-system-spring suspension bracket is provided with two system springs and a suspension bracket limit stop component, the two system springs are arranged in the middle of the suspension bracket, when the suspension bracket is connected with the vehicle body, the two suspension brackets are arranged at the hinged position of any two adjacent vehicle bodies and are used for providing a supporting effect for two sides of any one vehicle body in the two vehicle bodies, the suspension bracket limit stop component is matched with the vehicle body limit stop component on the vehicle body to limit the movement of the two-system-spring suspension bracket relative to the vehicle body along the second direction and the third direction, the electromagnetic suspension force and the guiding force borne by the suspension bracket are not balanced after partial superconducting coils of one superconducting magnet are quenched, but the limit stop component is arranged on the suspension bracket, and the carriages of the adjacent vehicle bodies are connected in a hinged mode, the two series springs only directly support the carriages of one vehicle body, and relative dislocation along the transverse direction (Z axis and the third direction) and play along the vertical direction (Y axis and the second direction) do not occur between the adjacent carriages, so that the amplitude of various rotary motions of the suspension frame is very limited, and the suspension frame can still keep a normal state. Therefore, the suspension frame cannot generate sliding friction and collision with the track under the condition that part of the superconducting coils are quenched, and the safety of high-speed running of the magnetic suspension train is improved.

As an embodiment of the present invention, the safety of a train with two suspension brackets is greatly improved compared to a train with four suspension brackets. When a part of superconducting coils of one superconducting magnet are quenched, the electromagnetic levitation force and the guiding force borne by the suspension frame are not balanced any more, and the rotating motion around the X, Y, Z axis occurs (the rotation around the X axis (the first direction) is rolling motion, the rotation around the Y axis is yawing motion, and the rotation around the Z axis is pitching motion), but because the suspension frame is provided with the limit stop assembly, and the adjacent carriages are connected in a hinged manner, relative dislocation along the transverse direction (the Z axis) and play along the vertical direction (the Y axis) do not occur between the adjacent carriages, so that the amplitude of various rotating motions of the suspension frame is very limited, and the suspension frame can still maintain a positive state. The suspension frame can not generate sliding friction and collision with the track under the condition that part of the superconducting coils are quenched, and the safety of high-speed running of the magnetic suspension train is improved.

As shown in fig. 12, carriages of adjacent vehicle bodies are connected with each other in an up-down hinged disc mode and are supported by two suspension frames with two series springs, when two superconducting coils 3-4 on one superconducting magnet of the suspension frame lose time, one end of the superconducting magnet has a falling tendency under the action of gravity of the superconducting magnet and the frame when seen from the side direction of the train, but the 1# vehicle body and the 2# vehicle body can not relatively slip, so that the 1# vehicle body and the 2# vehicle body can provide limit constraint for falling of the superconducting magnet and the frame with the falling tendency, and the superconducting magnet and the frame are enabled to keep postures without falling, as shown in fig. 13. When the left superconducting coils 3-4 lose time in a plan view, the walking part tends to have yaw movement under the action of the repulsive force of the right superconducting coils, and on the basis of the same principle, because no relative dislocation freedom degree exists between the 1# vehicle body and the 2# vehicle body, the 1# vehicle body and the 2# vehicle body jointly provide limit constraint for the walking part so that the walking part keeps the posture and does not fall, as shown in fig. 14. Compared with the safety of two secondary springs and four secondary springs from the aspect of kinematics, actually from the aspect of structural strength, the connection strength of the winch to two passenger cabins is far greater than that of a car coupler, the integrity between the adjacent passenger cabins can be kept better, and therefore the safety of a train provided with two secondary spring suspension frames is higher.

Further, in the present invention, in order to realize the support of the vehicle body, both the first and second tied springs 50 and 60 may be configured to include a round steel spring or an air spring. Specifically, two series springs are respectively arranged on the left side and the right side of the longitudinal (X axis in the drawing and the first direction) central position of the superconducting magnet suspension force on the framework, the two series springs on the framework are symmetrically arranged about the longitudinal central line of the suspension frame, the two series springs on the framework support the left side and the right side of the same section of vehicle body, and the two series springs can be an air spring or a group of round steel springs.

Further, in the present invention, in order to support the superconducting magnet, the one-spring assembly 40 may be configured to include a first spring, a second spring, a third spring and a fourth spring, the first spring and the second spring being disposed on one side of the frame 10 along the first direction, one end of the first superconducting magnet 20 being mounted on one side of the frame 10 through the first spring, the other end of the first superconducting magnet 20 being mounted on one side of the frame 10 through the second spring; the third and fourth tie springs are disposed at the other side of the frame 10 in the first direction, one end of the second superconducting magnet 30 is mounted at one side of the frame 10 through the third tie spring, and the other end of the second superconducting magnet 30 is mounted at the other side of the frame 10 through the fourth tie spring.

In this configuration, the superconducting magnet is mounted on the frame through a spring assembly, and when the train runs at a high speed, the suspension force and the guiding force applied to the superconducting magnet are transmitted to the frame, and when the train speed is lower than a certain value, the frame provides a supporting function for the superconducting magnet. In order to improve the stability of the suspension, the first superconducting magnet and the second superconducting magnet are connected with each other into a whole through a plurality of support rods 100.

Further, in the present invention, in order to support and guide the vehicle body, the two-system spring suspension further includes a support wheel assembly 80 and a guide wheel assembly 90, the support wheel assembly 80 and the guide wheel assembly 90 are both disposed on the frame 10, the support wheel assembly 80 is used to support the vehicle body, and the guide wheel assembly 90 is used to guide the vehicle body.

Specifically, in the present invention, the frame is the main structure of the suspension, and other devices on the suspension are directly or indirectly mounted on the frame. The supporting wheel assembly 80 comprises four supporting wheels, wherein the front end part and the rear end part of the framework are respectively provided with one supporting wheel at the left and the right, and the total number of the supporting wheels on one framework is 4; the guide wheel assembly 90 includes four guide wheels, one guide wheel is respectively provided on the left and right of the front and rear end portions of the frame, and a total of 4 guide wheels are provided on one frame.

According to a further aspect of the invention, as shown in fig. 7(a) to 11(b), there is provided a magnetic levitation vehicle comprising a two-system spring suspension 1000 as described above. The suspension frame provided by the invention can not generate sliding friction and collision with the track under the condition that part of the superconducting coils are quenched, so that the suspension frame is applied to a magnetic suspension train, and the safety of high-speed running of the magnetic suspension train is greatly improved.

Further, as an embodiment of the present invention, as shown in fig. 3(a) and 3(b), the suspension limiting and stopping assembly 70 of the two-series spring suspension rack 1000 includes a first suspension vertical limiting and stopping component 701a, a first suspension horizontal limiting and stopping component 702a, a second suspension vertical limiting and stopping component 703a, and a second suspension horizontal limiting and stopping component 704a, where the first suspension vertical limiting and stopping component 701a and the first suspension horizontal limiting and stopping component 702a are disposed at one side of the frame 10 at intervals, and the second suspension vertical limiting and stopping component 703a and the second suspension horizontal limiting and stopping component 704a are disposed at the other side of the frame 10 at intervals; the train body of the maglev train comprises a first train body vertical limiting stopper 4001a, a first train body transverse limiting stopper 4002a, a second train body vertical limiting stopper 4003a and a second train body transverse limiting stopper 4004a, the first suspension frame vertical limiting stopper 701a is matched with the first train body vertical limiting stopper 4001a, the second suspension frame vertical limiting stopper 703a is matched with the second train body vertical limiting stopper 4003a to limit the movement of the two-system suspension frames along the second direction relative to the train body, the first suspension frame transverse limiting stopper 702a is matched with the first train body transverse limiting stopper 4002a, and the second suspension frame transverse limiting stopper 704a is matched with the second train body transverse limiting stopper 4004a to limit the movement of the two-system suspension frames along the third direction relative to the train body.

Specifically, as shown in fig. 3(a) and 3(b), in order to limit the movement of the two suspension systems in the second direction relative to the vehicle body, the first vehicle body vertical limit stop 4001a comprises a first vehicle body vertical stop 4001a1 and a second vehicle body vertical stop 4001a2 which are arranged at intervals, and the first suspension vertical limit stop 701a is arranged between the first vehicle body vertical stop 4001a1 and the second vehicle body vertical stop 4001a 2; the second vehicle body vertical limit stop 4003a comprises a third vehicle body vertical stop 4003a1 and a fourth vehicle body vertical stop 4003a2 which are arranged at intervals, and the second suspension frame vertical limit stop 703a is arranged between the third vehicle body vertical stop 4003a1 and the fourth vehicle body vertical stop 4003a 2.

Further, in the present invention, in order to simplify the structure, as another embodiment of the present invention, as shown in fig. 6(a) and 6(b), the suspension limit stopper assembly 70 of the two-system spring suspension 1000 includes a first suspension vertical limit stopper 701b and a second suspension vertical limit stopper 702b, the first suspension vertical limit stopper 701b is disposed on one side of the frame 10, and the second suspension vertical limit stopper 702b is disposed on the other side of the frame 10; the maglev train body comprises a first vehicle body vertical and horizontal limiting stop 4001b and a second vehicle body vertical and horizontal limiting stop 4002b, wherein the first suspension frame vertical and horizontal limiting stop 701b is matched with the first vehicle body vertical and horizontal limiting stop 4001b, and the second suspension frame vertical and horizontal limiting stop 702b is matched with the second vehicle body vertical and horizontal limiting stop 4002b to limit the two series of suspension frames to move along the second direction and the third direction relative to the vehicle body.

Specifically, as shown in fig. 6(b), in order to limit the movement of the two suspension frames in the second direction and the third direction relative to the vehicle body, the first vehicle body vertical and horizontal limit stopper 4001b includes a first horizontal baffle 4001b1, a first vertical baffle 4001b2 and a second vertical baffle 4001b3, which are connected in sequence, the first vertical baffle 4001b2 and the second vertical baffle 4001b3 are arranged in parallel along the horizontal plane, and the first suspension frame vertical and horizontal limit stopper 701b is arranged between the first vertical baffle 4001b2 and the second vertical baffle 4001b3 to limit the movement of the two suspension frames in the second direction relative to the vehicle body; the second vehicle body vertical and transverse limit stop 4002b comprises a second transverse baffle 4002b1, a third vertical baffle 4002b2 and a fourth vertical baffle 4002b3 which are sequentially connected, the third vertical baffle 4002b2 and the fourth vertical baffle 4002b3 are arranged in parallel along a horizontal plane, a second suspension frame vertical and transverse limit stop 702b is arranged between the third vertical baffle 4002b2 and the fourth vertical baffle 4002b3 to limit the two suspension frames to move along the second direction relative to the vehicle body, the first transverse baffle 4001b1 is matched with the first suspension frame vertical and transverse limit stop 701b, and the second transverse baffle 4002b1 is matched with the second suspension frame vertical and transverse limit stop 702b to limit the two suspension frames to move along the third direction relative to the vehicle body.

Further, in the invention, the magnetic suspension train with the two suspension brackets with the two suspension springs is composed of a train body and the two suspension brackets with the two suspension springs, wherein the train body is divided into a head train and a tail train, the head train is the first train and the last train of the train, and the middle train is positioned between the first train and the last train. The head and tail cars are designed in a head shape, a head car and a tail car are generally arranged in a train marshalling, the intermediate car can be in one section or multiple sections, and two head and tail cars can be directly marshalled into a train without the intermediate car.

For the magnetic suspension train applied to the vacuum pipeline, all the carriages can be communicated with each other, namely, people can flow among all the carriages, and also can be not communicated with each other, and preferably, all the carriages are communicated with each other. Two connecting points are arranged on the upper side and the lower side of the vehicle body between the carriages which are mutually communicated, and only one connecting point is arranged on the lower side between the carriages which are not communicated. The articulated connection mode is that two adjacent carriages only have relative rotation freedom around a longitudinal axis, a transverse axis and a vertical axis (respectively corresponding to an X axis, a Z axis and a Y axis of the drawing) and do not have relative translation freedom along the longitudinal axis, the transverse axis and the vertical axis, or only have small-amplitude (not more than 30mm) translation freedom allowed by the elastic deformation of an elastic element in the articulated connection device.

The two connecting points are arranged between the carriages, the lower connecting point is connected in an articulated mode, the upper connecting point can be connected in a coupler mode or an articulated mode, preferably, the upper connecting point is connected in an articulated mode, the upper articulated device is internally provided with the elastic unit, and the elastic deformation of the elastic unit is greater than that of the lower articulated device. Two suspension frames with two series springs are arranged below the hinging devices of two adjacent vehicle bodies, the two suspension frames with two series springs are supported on the same vehicle body, and two suspension frames with two series springs are respectively arranged below the head-shaped ends of the head-tail vehicles.

As an embodiment of the present invention, a magnetic levitation train includes a head train body 2000, a tail train body 3000, a plurality of intermediate train bodies 4000, and a plurality of two-system spring levitation mounts 1000, the head train body 2000, the plurality of intermediate train bodies 4000, and the tail train body 3000 are sequentially articulated, and the plurality of two-system spring levitation mounts 1000 are sequentially disposed at a head end bottom of the head train body 2000, an articulation position of the head train body 2000 with the intermediate train bodies 4000 near the head train body 2000, an articulation position of any two intermediate train bodies 4000 among the plurality of intermediate train bodies 4000, an articulation position of the intermediate train bodies 4000 and the tail train body 3000 near the tail train body 3000, and a tail end bottom of the tail train body 3000.

For further understanding of the present invention, the two-system spring suspension and the maglev train provided by the present invention will be described in detail with reference to fig. 1(a) to fig. 11 (b).

The first embodiment: as shown in fig. 1(a) to 3(b), according to the first embodiment of the present invention, there is provided a two-system spring suspension, which includes a frame 10, a first superconducting magnet 20, a second superconducting magnet 30, a first-system spring assembly 40, a first second-system spring 50, a second-system spring 60, a suspension limit stop assembly 70, a support wheel assembly 80, a guide wheel assembly 90, and a support rod 100, wherein the suspension limit stop assembly 70 includes four sets of limit stops, each set of limit stops includes a suspension vertical limit stop and a suspension horizontal limit stop, and the first second-system spring 50 and the second-system spring 60 include two sets of round steel springs.

As shown in fig. 2(a) to 2(c), the frame 10 is a main structure of the suspension, two sets of two-tied-spring mounting interfaces 10b, four one-tied-spring mounting interfaces 10a, four guide wheel mounting interfaces 10c, four support wheel mounting interfaces 10d, and four sets of limit stops are respectively disposed on a first side beam 11 (i.e., a left side beam) and a second side beam 12 (i.e., a right side beam) of the frame 10, the four sets of limit stops are distributed at four ends of the frame, and limit relative movement between the suspension and the vehicle body in a vertical direction (Y axis) and a transverse direction (Z axis), and the four sets of limit stops are symmetrically disposed about a transverse center line and a longitudinal center line of the suspension. The left and right sides are division of the region along the Z-axis direction with the X-axis as a center line.

In the first embodiment, a set of two round steel springs are respectively mounted on the first side beam 11 and the second side beam 12 of the frame 10, and both sets of round steel springs are used for supporting one upper vehicle body of two adjacent vehicle bodies.

Each set of limit stops is divided into a vertical limit stop and a horizontal limit stop, as shown in fig. 3(a) and 3(b), two second suspension frame vertical limit stops 703a and two second suspension frame horizontal limit stops 704a are arranged on the left side of the framework 10, two first suspension frame vertical limit stops 701a and two first suspension frame horizontal limit stops 702a are arranged on the right side of the framework 10, the first suspension frame vertical limit stop 701a is matched with the first vehicle body vertical limit stop 4001a, the second suspension frame vertical limit stop 703a is matched with the second vehicle body vertical limit stop 4003a, and when the vertical relative displacement of the suspension frame vertical limit stops and the vehicle body vertical limit stops reaches the vertical gap between the two stops, the two stops contact to limit the further increase of the vertical relative displacement. The first suspension frame transverse limiting stopper 702a is matched with the first vehicle body transverse limiting stopper 4002a, the second suspension frame transverse limiting stopper 704a is matched with the second vehicle body transverse limiting stopper 4004a, and when the relative displacement of the suspension frame transverse limiting stopper and the vehicle body transverse limiting stopper reaches a transverse gap between the two, the two contact to limit the further increase of the transverse relative displacement.

Second embodiment: as shown in fig. 4(a) to 6(b), according to the second embodiment of the present invention, there is provided a two-system spring suspension including a frame 10, a first superconducting magnet 20, a second superconducting magnet 30, a first system spring assembly 40, a first second system spring 50, a second system spring 60, a suspension limit stopper assembly 70, a support wheel assembly 80, a guide wheel assembly 90, and a support rod 100, wherein the suspension limit stopper assembly 70 is composed of four limit stoppers, and each of the first second system spring 50 and the second system spring 60 is composed of a second system air spring.

As shown in fig. 5(a) to 5(c), the frame 10 is a main body structure of the suspension, and two tying spring mounting interfaces 10b, four tying spring mounting interfaces 10a, four guide wheel mounting interfaces 10c, four support wheel mounting interfaces 10d, and four vertical limit stoppers are respectively provided on the first side member 11 (i.e., the left side member) and the second side member 12 (i.e., the right side member) of the frame 10. The left and right sides are division of the region along the Z-axis direction with the X-axis as a center line.

In the second embodiment, one air spring is mounted on each of the first side member 11 and the second side member 12, and both air springs are used to support one of the adjacent two vehicle bodies.

Each limit stop has limit functions in both vertical direction (Y-axis direction in the figure) and horizontal direction (Z-axis direction in the figure), as shown in fig. 6(a) and 6(b), two second suspension vertical and horizontal limit stops 702b are arranged on the left side of the frame 10, two first suspension vertical and horizontal limit stops 701b are arranged on the right side of the frame 10, each limit stop has limit functions in both vertical direction (Y-axis direction in the figure) and horizontal direction (Z-axis direction in the figure), the first suspension vertical and horizontal limit stop 701b is matched with the first vehicle vertical and horizontal limit stop 4001b and the second suspension vertical and horizontal limit stop 702b is matched with the second vehicle vertical and horizontal limit stop 4002b, when the relative displacement of the suspension vertical and horizontal limit stops and the vehicle vertical and horizontal limit stops in the vertical direction or the horizontal direction reaches the horizontal gap therebetween, the two come into contact to limit further increase in vertical or lateral relative displacement.

The third embodiment: as shown in fig. 7(a) to 9(b), a magnetic levitation train with a two-system spring suspension is provided according to a third embodiment of the present invention, and for convenience of description, a three-section formation is described as an example in the embodiment of the train, that is, the train has only one intermediate car, and the intermediate car may be any number of sections.

In the third embodiment, the maglev train includes a head train body 2000, a tail train body 3000, an intermediate train body 4000 and four suspension frames 1000 with two-series springs, the head train body 2000 and the intermediate train body 4000 are connected by a hinge device 5000, and the intermediate train body 4000 and the tail train body 3000 are connected by a hinge device 5000. The four suspension brackets 1000 are supported under the head of the outer end of the head car body 2000, under the head of the outer end of the tail car body 3000 and under the two hinges 5000.

A first second vehicle body tied spring mounting interface 4003a, a second vehicle body tied spring mounting interface 4003b, two first vehicle body vertical transverse limiting stoppers 4001b and two second vehicle body vertical transverse limiting stoppers 4002b are fixedly arranged below the head type of the outer end part on the head vehicle body 2000, and a first second vehicle body tied spring mounting interface 4003a, a second vehicle body tied spring mounting interface 4003b, a first vehicle body vertical transverse limiting stopper 4001b and a second vehicle body vertical transverse limiting stopper 4002b are fixedly arranged at one end hinged with the middle vehicle body 1000.

A first vehicle body vertical and horizontal limiting stop 4001b and a second vehicle body vertical and horizontal limiting stop 4002b are fixedly arranged at one end of the middle vehicle body 4000, which is hinged to the head vehicle body 2000, and a first vehicle body vertical and horizontal limiting stop 4001b and a second vehicle body vertical and horizontal limiting stop 4002b are fixedly arranged at one end of the middle vehicle body 4000, which is hinged to the tail vehicle body 3000.

A first vehicle body secondary spring mounting interface 4003a, a second vehicle body secondary spring mounting interface 4003b, a first vehicle body vertical transverse limiting stop 4001b and a second vehicle body vertical transverse limiting stop 4002b are fixedly arranged at one end of the tail vehicle body 3000 hinged with the middle vehicle body 4000, and a first vehicle body secondary spring mounting interface 4003a, a second vehicle body secondary spring mounting interface 4003b, two first vehicle body vertical transverse limiting stops 4001b and two second vehicle body vertical transverse limiting stops 4002b are fixedly arranged below the head shape of the outer end part of the tail vehicle body 3000.

A first series spring 50, a second series spring 60, two first suspension frame vertical and horizontal limit stoppers 701b and two second suspension frame vertical and horizontal limit stoppers 702b are fixedly arranged on the two series spring suspension frames 1000, wherein the first series spring 50 and the second series spring 60 are both air springs.

Under the head-shaped end of the head car body 2000, the first secondary spring 50 and the second secondary spring 60 of the two-secondary-spring suspension frame 1000 respectively support one end of the head car body through a first car body secondary spring mounting interface 4003a and a second car body secondary spring mounting interface 4003b on the head car body 2000, meanwhile, four vertical and horizontal limit stops of the suspension frame are respectively matched with four car body vertical and horizontal limit stops on the head car body one by one, and each limit stop can play a role in motion limit from the vertical direction (the Y direction in the figure) and the horizontal direction (the Z direction in the figure).

Under one end of the head vehicle body 2000 hinged to the middle vehicle body 4000, the first secondary spring 50 and the second secondary spring 60 of the two secondary spring suspension frames 1000 support the other end of the head vehicle body through a first vehicle body secondary spring mounting interface 4003a and a second vehicle body secondary spring mounting interface 4003b on the head vehicle body 2000 respectively, meanwhile, four vertical and horizontal limiting stops of the suspension frames are respectively matched with two vehicle body vertical and horizontal limiting stops on the head vehicle body and two vehicle body vertical and horizontal limiting stops on the middle vehicle body 4000 one by one, and each limiting stop can play a role in motion limiting from the vertical direction (the Y direction in the figure) and the horizontal direction (the Z direction in the figure).

The intermediate vehicle body 4000 is associated with the head vehicle body 2000 through the hinge device 5000 to transmit the self-weight to the head vehicle body 2000, thereby being indirectly supported by the suspension.

Below the hinged end of the middle vehicle body 4000 and the tail vehicle body 3000, the first secondary spring 50 and the second secondary spring 60 of the suspension support one end of the tail vehicle body 3000 through a first vehicle body secondary spring installation interface 4003a and a second vehicle body secondary spring installation interface 4003b which are fixedly arranged on the tail vehicle body 3000, meanwhile, four limit stops of the suspension are matched with two limit stops fixedly arranged on the middle vehicle body 4000 and two limit stops fixedly arranged on the tail vehicle body 3000 one by one, and each limit stop can play a role in limiting movement from the vertical direction (the Y direction in the figure) and the transverse direction (the Z direction in the figure).

The intermediate car body 4000 is associated with the trailing car body 3000 through the hinge device 5000 to transmit the self-weight to the trailing car body 3000, thereby indirectly obtaining the support of the suspension.

Below the head-shaped end of the trailer body 3000, the other end of the trailer body 3000 is supported by the first and second serial springs 50 and 60 of the suspension through the first and second body serial spring mounting interfaces 4003a and 4003b fixedly disposed on the trailer body 3000, and meanwhile, the four limit stops of the suspension are matched with the four limit stops fixed on the trailer body 3000 one by one, and each limit stop can perform motion limiting from the vertical direction (shown in the figure Y direction) and the horizontal direction (shown in the figure Z direction).

The fourth embodiment: as shown in fig. 10a to 11 b, according to a fourth embodiment of the present invention, a maglev train with two suspension spring systems is provided, compared to the third embodiment, two upper and lower connection points (upper and lower are Y-direction in the figure) are provided between each car of the maglev train according to the fourth embodiment, and the windows are designed as pressure-resistant airtight windows of an airplane, so that the maglev train can be applied to vacuum pipe transportation.

The maglev train in the fourth embodiment includes a head train body 2000, a tail train body 3000, a middle train body 4000 and four suspension frames 1000 with two-series springs, the head train body 2000 and the middle train body 4000 are connected by an upper hinge device 5000 and a lower hinge device 5000, and the middle train body 4000 and the tail train body 3000 are connected by an upper hinge device 5000 and a lower hinge device 5000. The four suspension brackets 1000 are supported under the head of the outer end of the head car body 2000, under the head of the outer end of the tail car body 3000 and under the two hinges 5000.

A first second vehicle body tied spring mounting interface 4003a, a second vehicle body tied spring mounting interface 4003b, two first vehicle body vertical transverse limiting stoppers 4001b and two second vehicle body vertical transverse limiting stoppers 4002b are fixedly arranged below the head type of the outer end part on the head vehicle body 2000, and a first second vehicle body tied spring mounting interface 4003a, a second vehicle body tied spring mounting interface 4003b, a first vehicle body vertical transverse limiting stopper 4001b and a second vehicle body vertical transverse limiting stopper 4002b are fixedly arranged at one end hinged with the middle vehicle body 1000.

A first vehicle body vertical and horizontal limiting stop 4001b and a second vehicle body vertical and horizontal limiting stop 4002b are fixedly arranged at one end of the middle vehicle body 4000, which is hinged to the head vehicle body 2000, and a first vehicle body vertical and horizontal limiting stop 4001b and a second vehicle body vertical and horizontal limiting stop 4002b are fixedly arranged at one end of the middle vehicle body 4000, which is hinged to the tail vehicle body 3000.

A first vehicle body secondary spring mounting interface 4003a, a second vehicle body secondary spring mounting interface 4003b, a first vehicle body vertical transverse limiting stop 4001b and a second vehicle body vertical transverse limiting stop 4002b are fixedly arranged at one end of the tail vehicle body 3000 hinged with the middle vehicle body 4000, and a first vehicle body secondary spring mounting interface 4003a, a second vehicle body secondary spring mounting interface 4003b, two first vehicle body vertical transverse limiting stops 4001b and two second vehicle body vertical transverse limiting stops 4002b are fixedly arranged below the head shape of the outer end part of the tail vehicle body 3000.

A first series spring 50, a second series spring 60, two first suspension frame vertical and horizontal limit stoppers 701b and two second suspension frame vertical and horizontal limit stoppers 702b are fixedly arranged on the two series spring suspension frames 1000, wherein the first series spring 50 and the second series spring 60 are both air springs.

Under the head-shaped end of the head car body 2000, the first secondary spring 50 and the second secondary spring 60 of the two-secondary-spring suspension frame 1000 respectively support one end of the head car body through a first car body secondary spring mounting interface 4003a and a second car body secondary spring mounting interface 4003b on the head car body 2000, meanwhile, four vertical and horizontal limit stops of the suspension frame are respectively matched with four car body vertical and horizontal limit stops on the head car body one by one, and each limit stop can play a role in motion limit from the vertical direction (the Y direction in the figure) and the horizontal direction (the Z direction in the figure).

Under one end of the head vehicle body 2000 hinged to the middle vehicle body 4000, the first secondary spring 50 and the second secondary spring 60 of the two secondary spring suspension frames 1000 support the other end of the head vehicle body through a first vehicle body secondary spring mounting interface 4003a and a second vehicle body secondary spring mounting interface 4003b on the head vehicle body 2000 respectively, meanwhile, four vertical and horizontal limiting stops of the suspension frames are respectively matched with two vehicle body vertical and horizontal limiting stops on the head vehicle body and two vehicle body vertical and horizontal limiting stops on the middle vehicle body 4000 one by one, and each limiting stop can play a role in motion limiting from the vertical direction (the Y direction in the figure) and the horizontal direction (the Z direction in the figure).

The intermediate vehicle body 4000 is associated with the head vehicle body 2000 through the upper hinge device 5000 and the lower hinge device 5000 to transmit the self weight to the head vehicle body 2000, thereby being indirectly supported by the suspension.

Below the hinged end of the middle vehicle body 4000 and the tail vehicle body 3000, the first secondary spring 50 and the second secondary spring 60 of the suspension support one end of the tail vehicle body 3000 through a first vehicle body secondary spring installation interface 4003a and a second vehicle body secondary spring installation interface 4003b which are fixedly arranged on the tail vehicle body 3000, meanwhile, four limit stops of the suspension are matched with two limit stops fixedly arranged on the middle vehicle body 4000 and two limit stops fixedly arranged on the tail vehicle body 3000 one by one, and each limit stop can play a role in limiting movement from the vertical direction (the Y direction in the figure) and the transverse direction (the Z direction in the figure).

The intermediate vehicle body 4000 is associated with the trailing vehicle body 3000 through the upper hinge device 5000 and the lower hinge device 5000 to transmit the self-weight to the trailing vehicle body 3000, thereby being indirectly supported by the suspension.

Below the head-shaped end of the trailer body 3000, the other end of the trailer body 3000 is supported by the first and second serial springs 50 and 60 of the suspension through the first and second body serial spring mounting interfaces 4003a and 4003b fixedly disposed on the trailer body 3000, and meanwhile, the four limit stops of the suspension are matched with the four limit stops fixed on the trailer body 3000 one by one, and each limit stop can perform motion limiting from the vertical direction (shown in the figure Y direction) and the horizontal direction (shown in the figure Z direction).

In summary, the invention provides a suspension with two series springs and a maglev train, compared with the prior art, when part of superconducting coils on the suspension are out of time, two adjacent vehicle bodies supported by the suspension can provide vertical and transverse motion limiting effects on the suspension, and the motion attitude of the suspension with faults can not be translated and rotated in a large scale, so that the suspension can not be touched with a track, and the safety of the train in high-speed operation is greatly improved.