1. A flexible U-shaped track beam, comprising:

a first flexible sidewall (10) and a second flexible sidewall (20), the first flexible sidewall (10) and the second flexible sidewall (20) being arranged in parallel;

the flexible rail bottom (30) is arranged at the bottom of the first flexible side wall (10) and the second flexible side wall (20) and is respectively connected with the first flexible side wall (10) and the second flexible side wall (20) to form a U-shaped rail structure, the U-shaped rail structure is made of elastic materials, and the U-shaped rail structure can be bent and deformed around the vertical direction to realize the conversion of the running direction of the train.

2. The flexible U-shaped track beam according to claim 1, further comprising a first reinforcing layer (40), said first reinforcing layer (40) being disposed on an outer side of at least one of said first flexible side wall (10), said second flexible side wall (20) and said flexible foot (30), said first reinforcing layer (40) being for increasing a bending strength of said flexible U-shaped track beam.

3. The flexible U-shaped track beam according to claim 2, further comprising a second reinforcing layer (50), said second reinforcing layer (50) being disposed inside at least one of said first flexible sidewall (10), said second flexible sidewall (20), and said flexible rail foot (30), said second reinforcing layer (50) being for increasing a support stiffness of at least one of said first flexible sidewall (10), said second flexible sidewall (20), and said flexible rail foot (30).

4. The flexible U-shaped track beam according to claim 3, characterized in that the material of the first and second reinforcement layers (40, 50) each comprises austenitic stainless steel.

5. A vacuum pipe switch structure, characterized in that the vacuum pipe switch structure comprises a flexible U-shaped track beam (100), a rigid support track (200), a vacuum pipe cover (300) and a switch driving device (400), the flexible U-shaped track beam (100) being a flexible U-shaped track beam (100) according to any one of claims 1 to 4, the vacuum duct cover (300) is disposed on the rigid support rail (200) to form a vacuum receiving cavity, the flexible U-shaped track beam (100) is arranged in the vacuum accommodating cavity, the turnout driving device (400) is in driving connection with the flexible U-shaped track beam (100), the turnout driving device (400) can drive the flexible U-shaped track beam (100) to move along the rigid support track (200) to realize connection with a first fixed vacuum pipeline or connection with a second fixed vacuum pipeline.

6. The vacuum pipe switch structure as claimed in claim 5, wherein the rigid support rail (200) comprises a first rigid blocking wall (210), a rigid rail bottom (220) and a second rigid blocking wall (230), the rigid rail bottom (220) is disposed at the bottom of the first rigid blocking wall (210) and the second rigid blocking wall (230) and is respectively connected with the first rigid blocking wall (210) and the second rigid blocking wall (230), the flexible U-shaped rail beam (100) can move between the first rigid blocking wall (210) and the second rigid blocking wall (230) along the rigid rail bottom (220) under the driving of the switch driving device (400); when the turnout driving device (400) drives the flexible U-shaped track beam (100) to move so as to realize the connection of the flexible U-shaped track beam (100) and the first fixed vacuum pipeline, the flexible U-shaped track beam (100) is attached to the first rigid blocking wall (210) so as to limit the flexible U-shaped track beam (100) through the first rigid blocking wall (210); when the turnout driving device (400) drives the flexible U-shaped track beam (100) to move so as to realize the connection of the flexible U-shaped track beam (100) and the second fixed vacuum pipeline, the flexible U-shaped track beam (100) is attached to the second rigid blocking wall (230) so as to limit the flexible U-shaped track beam (100) through the second rigid blocking wall (230).

7. The vacuum pipe switch structure of claim 6, further comprising a first locking device (500) and a second locking device (600), wherein the first locking device (500) and the second locking device (600) are both disposed on the rigid rail bottom (220), the first flexible side wall (10) has a first locking groove (10a), the second flexible side wall (20) has a second locking groove (20a), wherein the first locking device (500) cooperates with the second locking groove (20a) to achieve a limit to the flexible U-shaped rail beam (100) when the flexible U-shaped rail beam (100) is engaged with the first rigid blocking wall (210); when the flexible U-shaped track beam (100) is jointed with the second rigid retaining wall (230), the second locking device (600) is matched with the first locking device (500) to limit the flexible U-shaped track beam (100).

8. The vacuum pipe switch structure of claim 6, wherein the rigid rail base (220) has a constraint rail (220a), the vacuum pipe switch structure further comprising a stud (700), the stud (700) being disposed on the flexible rail base (30), the stud (700) moving along the constraint rail (220a) to guide the movement of the flexible U-shaped rail beam (100) when the switch driving device (400) drives the flexible U-shaped rail beam (100) to move along the rigid rail.

9. The vacuum pipe switch structure of claim 8, wherein the rigid rail base (220) has a plurality of spaced restraining rails (220a), the vacuum pipe switch structure comprises a plurality of said slide studs (700), a plurality of said slide studs (700) are spaced on the flexible rail base (30), and a plurality of said restraining rails (220a) and a plurality of said slide studs (700) are arranged in a one-to-one correspondence.

10. The vacuum pipe switch structure as claimed in claim 6, wherein the first flexible side wall (10) has a first groove (10b) or a first protrusion, the first rigid blocking wall (210) has a first protrusion (211) or a first groove, and the first groove (10b) cooperates with the first protrusion (211) to define lateral displacement and vertical displacement of the flexible U-shaped rail beam (100); and/or the second flexible side wall (20) is provided with a second groove (20b) or a second protrusion, the second rigid blocking wall (230) is provided with a second protrusion (231) or a second groove, and the second groove (20b) is matched with the second protrusion (231) to limit the transverse displacement and the vertical displacement of the flexible U-shaped track beam (100).

Background

The electric magnetic suspension type track is different from the traditional wheel track, the section of the track is U-shaped (as shown in figure 19), the left side wall and the right side wall of the track are provided with an electric coil and a guide wheel track, and the bottom of the track is also provided with a supporting wheel track. When the train runs at high speed, the electric coil on the side wall interacts with the magnet on the train to provide vertical suspension force and transverse guiding force for the train. When the train runs at a low speed, the electromagnetic force action of the train and the electric coil is weaker, and the support wheels and the guide wheels on the train are supported on the support wheel tracks and the guide wheel tracks respectively to provide vertical support and transverse guide acting force for the train.

This type of track structure makes the switch unable to be installed with a frog structure (the frog device is the intersection of two rails, as shown in fig. 20) as in a conventional high-speed railway switch, and can only switch the traveling direction of the train in a moving manner.

In order to eliminate air resistance when the train runs at high speed, the train is placed in a vacuum pipeline to run, and accordingly, an electric coil, a supporting wheel track and a wire wheel track which are directly associated with the train on the U-shaped rail are also placed in the vacuum pipeline.

As shown in fig. 20 to 22, a conventional turnout on a high-speed rail is formed by connecting a left switch rail and a right switch rail together through a switch rail fixing rod to form a movable rail of the turnout. The switch driving device drives the switch rail to fixedly move, so that the conversion between a straight passing state and a lateral passing state is realized.

At present, the vacuum pipeline magnetic suspension transportation does not enter the engineering stage in the world, and a vacuum pipeline turnout scheme disclosed in the prior document are provided, wherein the vacuum pipeline is of an integral large circular pipe structure, and a U-shaped track is built at the bottom of the circular pipe, as shown in figure 23.

The switch device suitable for the integral large round pipe vacuum pipeline is shown in figures 24 to 26, the design scheme is that a U-shaped track of a switch section and a vacuum pipeline surrounding the track are designed to be integrally movable, when a train passes in a straight direction, the straight switch pipeline is used for butt joint communication, and when the train needs to pass in a side direction, the side-passing switch pipeline is used for butt joint communication.

Because the U-shaped track of the electric magnetic suspension traffic system surrounds the running train, the design scheme of the turnout used on the existing high-speed rail cannot be moved to the U-shaped track of the electric magnetic suspension traffic system.

The vacuum line switch disclosed in the prior art has the following disadvantages: the switch section vacuum pipeline needing to be moved has large structure scale and weight, so that the construction cost is high, the energy consumption is high in the use process, and the maintenance workload is large; another problem caused by the large structure scale and weight of the switch section vacuum pipeline which needs to be moved is that the execution time of the switch action of the turnout is long, and the passing efficiency of the vacuum pipeline is seriously influenced; the switch section vacuum pipeline that needs to move and each pipeline of rather than the cooperation all need design sealed valve, and when the switch section translation was put in place, need open corresponding sealed valve in order to carry out the train and pass through, these sealed valves bring adverse effect to vacuum pipeline's sealing performance and driving safety.

Disclosure of Invention

The invention provides a flexible U-shaped track beam and a vacuum pipeline turnout structure with the same, which can solve the technical problems that the vacuum pipeline turnout structure in the prior art is high in energy consumption and cost and affects the sealing performance of a vacuum pipeline and the driving safety.

According to an aspect of the present invention, there is provided a flexible U-shaped track beam including: the flexible side wall structure comprises a first flexible side wall and a second flexible side wall, wherein the first flexible side wall and the second flexible side wall are arranged in parallel; the flexible rail bottom is arranged at the bottom of the first flexible side wall and the bottom of the second flexible side wall and is respectively connected with the first flexible side wall and the second flexible side wall to form a U-shaped rail structure, the U-shaped rail structure is made of elastic materials, and the U-shaped rail structure can be bent and deformed around the vertical direction to realize the conversion of the running direction of the train.

Further, the flexible U-shaped track beam further comprises a first reinforcing layer, the first reinforcing layer is arranged on the outer side face of at least one of the first flexible side wall, the second flexible side wall and the flexible rail bottom, and the first reinforcing layer is used for improving the bending strength of the flexible U-shaped track beam.

Further, the flexible U-shaped track beam further comprises a second reinforcing layer, the second reinforcing layer is arranged inside at least one of the first flexible side wall, the second flexible side wall and the flexible rail bottom, and the second reinforcing layer is used for improving the supporting rigidity of at least one of the first flexible side wall and the flexible rail bottom of the second flexible side wall.

Further, the first reinforcing layer and the second reinforcing layer are made of austenitic stainless steel.

According to another aspect of the present invention, there is provided a vacuum pipe switch structure, the vacuum pipe switch structure includes a flexible U-shaped rail beam, a rigid support rail, a vacuum pipe cover and a switch driving device, the flexible U-shaped rail beam is the flexible U-shaped rail beam described above, the vacuum pipe cover is disposed on the rigid support rail to form a vacuum accommodating cavity, the flexible U-shaped rail beam is disposed in the vacuum accommodating cavity, the switch driving device is in driving connection with the flexible U-shaped rail beam, and the switch driving device can drive the flexible U-shaped rail beam to move along the rigid support rail to realize connection with a first fixed vacuum pipe or connection with a second fixed vacuum pipe.

Furthermore, the rigid support rail comprises a first rigid blocking wall, a rigid rail bottom and a second rigid blocking wall, the rigid rail bottom is arranged at the bottom of the first rigid blocking wall and the bottom of the second rigid blocking wall and is respectively connected with the first rigid blocking wall and the second rigid blocking wall, and the flexible U-shaped rail beam can move between the first rigid blocking wall and the second rigid blocking wall along the rigid rail bottom under the driving of the turnout driving device; when the turnout driving device drives the flexible U-shaped track beam to move so as to realize the connection of the flexible U-shaped track beam and the first fixed vacuum pipeline, the flexible U-shaped track beam is attached to the first rigid retaining wall so as to limit the flexible U-shaped track beam through the first rigid retaining wall; when the turnout driving device drives the flexible U-shaped track beam to move so as to realize the connection of the flexible U-shaped track beam and the second fixed vacuum pipeline, the flexible U-shaped track beam is attached to the second rigid retaining wall so as to limit the flexible U-shaped track beam through the second rigid retaining wall.

Furthermore, the vacuum pipeline turnout structure further comprises a first locking device and a second locking device, wherein the first locking device and the second locking device are arranged at the bottom of the rigid rail, the first flexible side wall is provided with a first locking groove, the second flexible side wall is provided with a second locking groove, and when the flexible U-shaped rail beam is attached to the first rigid retaining wall, the first locking device is matched with the second locking groove to limit the flexible U-shaped rail beam; when the flexible U-shaped track beam is attached to the second rigid retaining wall, the second locking device is matched with the first locking device to limit the flexible U-shaped track beam.

Further, the rigid rail bottom is provided with a constraint slide rail, the vacuum pipeline turnout structure further comprises a slide pile, the slide pile is arranged on the flexible rail bottom, and when the turnout driving device drives the flexible U-shaped rail beam to move along the rigid rail, the slide pile moves along the constraint slide rail so as to guide the movement of the flexible U-shaped rail beam.

Furthermore, the rigid rail bottom is provided with a plurality of constraint slide rails arranged at intervals, the vacuum pipeline turnout structure comprises a plurality of slide piles, the slide piles are arranged on the flexible rail bottom at intervals, and the constraint slide rails and the slide piles are arranged in a one-to-one correspondence mode.

Furthermore, the first flexible side wall is provided with a first groove or a first protrusion, the first rigid blocking wall is provided with a first protrusion or a first groove, and the first groove and the first protrusion are matched to limit the transverse displacement and the vertical displacement of the flexible U-shaped track beam; and/or the second flexible side wall is provided with a second groove or a second protrusion, the second rigid blocking wall is provided with a second protrusion or a second groove, and the second groove and the second protrusion are matched to limit the transverse displacement and the vertical displacement of the flexible U-shaped track beam.

By applying the technical scheme of the invention, the flexible U-shaped track beam is made of elastic materials, and when the running direction of a train needs to be changed, the flexible U-shaped track beam can realize the conversion of the running direction of the train by utilizing the characteristic that the flexible U-shaped track beam can generate bending deformation around the vertical direction, so that the connection between the flexible U-shaped track beam and different fixed tracks can be completed. Compared with the prior art, the flexible U-shaped track beam provided by the invention realizes the conversion of the train running direction by utilizing the flexibility characteristic of the material of the flexible U-shaped track beam, has low cost, low energy consumption and convenient maintenance, and the turnout section structure with the flexible U-shaped track beam does not need to be provided with a sealing valve, has no influence on the sealing performance of a vacuum pipeline, and has no problem of endangering the train running safety caused by the failure of the sealing valve.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

FIGS. 1 and 2 illustrate cross-sectional views of a flexible U-shaped track beam provided in accordance with a specific embodiment of the present invention;

FIG. 3 illustrates a flexural deformation view of a length of flexible U-shaped track beam provided in accordance with a specific embodiment of the present invention;

FIG. 4 illustrates a cross-sectional view of a flexible U-shaped track beam provided with a first reinforcing layer and a second reinforcing layer in accordance with a specific embodiment of the present invention;

figure 5 shows a cross-sectional view at a-a of the flexible U-shaped track beam provided with a first reinforcing layer and a second reinforcing layer as provided in figure 4;

FIG. 6 illustrates a top view of a vacuum line switch section using a flexible U-shaped rail beam provided in accordance with an embodiment of the present invention;

FIG. 7 shows cross-sectional views B-B, E-E and D-D of the vacuum line switch segment provided in FIG. 6;

FIG. 8 shows a cross-sectional view at C-C of the vacuum line switch section provided in FIG. 6;

FIG. 9 illustrates a top view of a vacuum conduit switch structure in a straight-going condition with vacuum conduit caps removed, provided in accordance with a specific embodiment of the present invention;

FIG. 10 illustrates a top view of a vacuum conduit switch structure in a side-on position with vacuum conduit covers removed, provided in accordance with a specific embodiment of the present invention;

figure 11 shows a cross-sectional view at C-C of the vacuum pipe switch section provided in figure 6 in accordance with another embodiment of the present invention;

FIG. 12 illustrates a schematic structural view of a restraint sled provided in accordance with an embodiment of the present invention;

FIG. 13 is a schematic view showing the switch actuating device and the locking device in a straight-ahead state of the vacuum line switch structure provided in accordance with the embodiment of the present invention;

FIG. 14 is a schematic view showing the state of the switch driving device and the locking device when the vacuum pipeline switch structure is in a side passing state according to the specific embodiment of the invention;

figure 15 shows a cross-sectional view at F-F of the switch drive provided in figure 14;

FIG. 16 shows a cross-sectional view at G-G of the restraint sled provided in FIG. 14;

FIG. 17 shows a cross-sectional view at H-H of the locking arrangement provided in FIG. 13;

FIG. 18 shows a cross-sectional view at I-I of the locking device provided in FIG. 13;

fig. 19 shows a cross-sectional view of a magnetic levitation U-shaped rail of an electrodynamic levitation system provided in the prior art;

figure 20 shows a schematic diagram of the composition of a high-speed rail switch provided in the prior art;

figure 21 is a schematic view showing the state of the prior art point and switch device for a high-speed railway switch in a straight-through condition;

figure 22 is a schematic view of the point and switch mechanism of a high speed railway switch in a side-on condition as provided in the prior art;

fig. 23 is a sectional view showing a magnetic levitation vacuum pipe of an electrodynamic levitation system provided in the prior art;

fig. 24 shows a schematic construction of a unitary movable switch section provided in the prior art;

fig. 25 is a schematic structural view of a switch segment in a straight-through state provided in the prior art;

fig. 26 shows a schematic configuration of a switch segment in a side-passage state provided in the prior art.

Wherein the figures include the following reference numerals:

10. a first flexible sidewall; 10a, a first locking groove; 10b, a first groove; 11. a first guide wheel track; 20. a second flexible sidewall; 20a, a second locking groove; 20b, a second groove; 21. a second guide wheel track; 30. a flexible rail foot; 31. a support wheel track; 40. a first reinforcing layer; 50. a second reinforcing layer; 60. a first electric coil; 70. a second electric coil; 100. a flexible U-shaped track beam; 100a, an inner side of the first flexible sidewall; 100b, an outer side of the first flexible sidewall; 100c, an inner side of the second flexible sidewall; 100d, an outer side of the second flexible sidewall; 100e, the upper surface of the flexible rail base; 100f, the lower surface of the flexible rail bottom; 200. a rigid support rail; 210. a first rigid barrier wall; 211. a first protrusion; 220. a rigid rail bottom; 220a, restraining the sliding rail; 220b, a trench; 230. a second rigid barrier wall; 231. a second protrusion; 300. a vacuum pipe cover; 400. a turnout driving device; 500. a first locking device; 600. a second locking device; 700. pile sliding; 800. a bolt; 900. a sealing strip; 1000. a sliding track.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 to 5, according to an embodiment of the present invention, there is provided a flexible U-shaped track beam, which includes a first flexible sidewall 10, a second flexible sidewall 20, and a flexible bottom 30, wherein the first flexible sidewall 10 and the second flexible sidewall 20 are disposed in parallel, the flexible bottom 30 is disposed at the bottom of the first flexible sidewall 10 and the second flexible sidewall 20 and is connected to the first flexible sidewall 10 and the second flexible sidewall 20, respectively, to form a U-shaped track structure, and the U-shaped track structure is made of an elastic material, and the U-shaped track structure can be bent and deformed in a vertical direction to realize the change of the driving direction of a train.

By applying the configuration mode, the flexible U-shaped track beam is provided, is made of elastic materials, and can realize the conversion of the train running direction by utilizing the characteristic that the flexible U-shaped track beam can generate bending deformation around the vertical direction when the train running direction needs to be changed so as to finish the connection with different fixed tracks. Compared with the prior art, the flexible U-shaped track beam provided by the invention realizes the conversion of the train running direction by utilizing the flexibility characteristic of the material of the flexible U-shaped track beam, has low cost, low energy consumption and convenient maintenance, and the turnout section structure with the flexible U-shaped track beam does not need to be provided with a sealing valve, has no influence on the sealing performance of a vacuum pipeline, and has no problem of endangering the train running safety caused by the failure of the sealing valve.

Specifically, as an embodiment of the present invention, as shown in fig. 1, the flexible U-shaped track beam includes a first flexible sidewall 10, a second flexible sidewall 20, and a flexible track bottom 30, the flexible track bottom 30 is disposed at the bottom of the first flexible sidewall 10 and the second flexible sidewall 20 and is connected to the first flexible sidewall 10 and the second flexible sidewall 20 respectively to form a U-shaped track structure, an inner side surface 100a of the first flexible sidewall, an outer side surface 100b of the first flexible sidewall, an inner side surface 100c of the second flexible sidewall, and an outer side surface 100d of the second flexible sidewall are parallel to each other, and an upper surface 100e of the flexible track bottom and a lower surface 100f of the flexible track bottom are parallel to each other and are perpendicular to the inner side surface 100a of the first flexible sidewall, the outer side surface 100b of the first flexible sidewall, the inner side surface 100c of the second flexible sidewall, and the outer side surface 100d of the second flexible sidewall. As shown in fig. 2, a first guide wheel rail 11 is designed on the upper portion of the inner side surface 100a of the first flexible side wall, an electric coil mounting interface is designed below the first guide wheel rail 11 to mount the first electric coil 60, a second guide wheel rail 21 is designed on the upper portion of the inner side surface 100c of the second flexible side wall, an electric coil mounting interface is designed below the second guide wheel rail 21 to mount the second electric coil 70, and a support wheel rail 31 is designed on the upper surface 100e of the flexible rail base.

In addition, in the present invention, the flexible U-shaped track beam carries the high-speed operation of the maglev train, in order to avoid the magnetic attraction and eddy resistance when the train passes through, the flexible track beam is made of a material which is non-conductive and has a certain mechanical strength, and in order to meet the flexible deformation requirement of the track beam, the material of the flexible track beam should also have a certain flexibility, and preferably, resin, plastic or a composite material which takes resin and plastic as a base material and adds carbon fiber and glass fiber can be adopted.

Further, in the present invention, in order to increase the bending strength of the flexible rail beam, the flexible U-shaped rail beam may be configured to further include a first reinforcing layer 40, the first reinforcing layer 40 being disposed on an outer side surface of at least one of the first flexible sidewall 10, the second flexible sidewall 20, and the flexible rail foot 30, the first reinforcing layer 40 being for improving the bending strength of the flexible U-shaped rail beam.

As an embodiment of the present invention, as shown in fig. 4, a first reinforcing layer 40 is disposed on the outer side of each of the first flexible side wall 10, the second flexible side wall 20 and the flexible rail base 30, in this embodiment, a steel bar or a strip steel strip is used as the first reinforcing layer 40, and in order to reduce the magnetic attraction force and the eddy current resistance caused by the steel material, the material of the first reinforcing layer 40 is preferably austenitic stainless steel. As other embodiments of the present invention, the first reinforcing layer may be disposed only on the outer side of the first flexible sidewall, the second flexible sidewall or the flexible rail base, or disposed on the outer side of any two of the first flexible sidewall 10, the second flexible sidewall 20 and the flexible rail base 30, which is not limited herein.

Further, in the present invention, in order to increase the rigidity of the sidewall support guide wheels and/or increase the rigidity of the rail foot support wheels, the flexible U-shaped rail beam may be configured to further include a second reinforcing layer 50, the second reinforcing layer 50 being disposed inside at least one of the first flexible sidewall 10, the second flexible sidewall 20, and the flexible rail foot 30, the second reinforcing layer 50 being used to increase the support rigidity of at least one of the first flexible sidewall 10, the second flexible sidewall 20, and the flexible rail foot 30.

As an embodiment of the present invention, as shown in fig. 4, a second reinforcing layer 50 is disposed in each of the first flexible side wall 10, the second flexible side wall 20 and the flexible rail base 30, the second reinforcing layer 50 is disposed inside the flexible U-shaped rail beam in a U-shaped structure, in this embodiment, a steel bar or a strip-shaped steel strip is used as the second reinforcing layer 50, and in order to reduce the magnetic attraction and eddy current resistance caused by the steel material, the material of the second reinforcing layer 50 is preferably austenitic stainless steel. In the present invention, as shown in fig. 5, a plurality of U-shaped second reinforcing layers are provided at intervals in the longitudinal direction of the flexible U-shaped track beam in order to increase the rigidity of the side wall support guide wheels and the rigidity of the rail foot support wheels in both the longitudinal direction of the flexible U-shaped track beam. As other embodiments of the present invention, the second reinforcing layer may be disposed only in the first flexible sidewall 10, the second flexible sidewall 20 or the flexible rail base 30, or disposed in any two of the first flexible sidewall 10, the second flexible sidewall 20 and the flexible rail base 30, which is not limited herein.

According to another aspect of the present invention, as shown in fig. 6 to 18, there is provided a vacuum pipe switch structure, which includes a flexible U-shaped rail beam 100, a rigid support rail 200, a vacuum pipe cover 300, and a switch driving device 400, the flexible U-shaped rail beam 100 being the flexible U-shaped rail beam 100 as described above, the vacuum pipe cover 300 being disposed on the rigid support rail 200 to form a vacuum receiving cavity, the flexible U-shaped rail beam 100 being disposed in the vacuum receiving cavity, the switch driving device 400 being in driving connection with the flexible U-shaped rail beam 100, the switch driving device 400 being capable of driving the U-shaped rail beam to move along the rigid support rail 200 to achieve connection with a first fixed vacuum pipe or connection with a second fixed vacuum pipe.

By applying the configuration mode, the switch structure of the vacuum pipeline is provided, and by using the flexible U-shaped track beam provided by the invention, when the running direction of a train needs to be converted, the U-shaped track beam can move along the rigid support track 200 through the driving of the switch driving device so as to realize the connection with the first fixed vacuum pipeline or the connection with the second fixed vacuum pipeline.

Further, in the present invention, as shown in fig. 8, in order to enhance the rigidity and strength of the flexible U-shaped track beam after the flexible U-shaped track beam is migrated into place, the rigid support track 200 may be configured to include a first rigid blocking wall 210, a rigid track bottom 220 and a second rigid blocking wall 230, the rigid track bottom 220 is disposed at the bottom of the first rigid blocking wall 210 and the second rigid blocking wall 230 and is connected with the first rigid blocking wall 210 and the second rigid blocking wall 230, respectively, and the flexible U-shaped track beam 100 may be moved between the first rigid blocking wall 210 and the second rigid blocking wall 230 along the rigid track bottom 220 under the driving of the switch driving device 400; when the turnout driving device 400 drives the flexible U-shaped track beam 100 to move so as to connect the flexible U-shaped track beam 100 with the first fixed vacuum pipeline, the flexible U-shaped track beam 100 is attached to the first rigid blocking wall 210 so as to limit the flexible U-shaped track beam 100 through the first rigid blocking wall 210; when the turnout driving device 400 drives the flexible U-shaped track beam 100 to move so as to connect the flexible U-shaped track beam 100 with the second fixed vacuum pipeline, the flexible U-shaped track beam 100 is attached to the second rigid blocking wall 230 so as to limit the flexible U-shaped track beam 100 through the second rigid blocking wall 230.

In this configuration, by configuring the rigid support rail 200 to include the first rigid blocking wall 210, the rigid rail base 220 and the second rigid blocking wall 230, the first rigid blocking wall 210 and the second rigid blocking wall 230 are connected to each other through the rigid rail base 220, and when the flexible U-shaped rail beam migrates to a position, a constraint can be provided to one side wall of the flexible U-shaped rail beam through the first rigid blocking wall 210 or the second rigid blocking wall 230, thereby enhancing the rigidity and strength of the flexible U-shaped rail beam. As a specific embodiment of the present invention, the first fixed vacuum pipe is a vacuum pipe for lateral traveling, and the second fixed vacuum pipe is a vacuum pipe for vertical traveling, when the flexible U-shaped rail beam 100 is connected to the vacuum pipe for lateral traveling, the flexible U-shaped rail beam 100 is attached to the first rigid blocking wall 210 to limit the flexible U-shaped rail beam 100 by the first rigid blocking wall 210; when the flexible U-shaped track beam 100 is connected to a vacuum pipeline running in a straight direction, the flexible U-shaped track beam 100 is attached to the second rigid blocking wall 230 so as to limit the flexible U-shaped track beam 100 by the second rigid blocking wall 230.

Further, in the present invention, in order to improve the smoothness of the train when passing after the flexible U-shaped track beam is moved in place, the vacuum pipe switch structure may be configured to further include a first locking device 500 and a second locking device 600, the first locking device 500 and the second locking device 600 are both disposed on the rigid rail bottom 220, the first flexible sidewall 10 has a first locking groove 10a, and the second flexible sidewall 20 has a second locking groove 20a, wherein, when the flexible U-shaped track beam 100 is attached to the first rigid blocking wall 210, the first locking device 500 and the second locking groove 20a cooperate to limit the flexible U-shaped track beam 100; when the flexible U-shaped track beam 100 is engaged with the second rigid blocking wall 230, the second locking device 600 cooperates with the first locking device 500 to limit the position of the flexible U-shaped track beam 100.

In this configuration, after the flexible U-shaped track beam is moved into position, one side wall of the flexible U-shaped track beam is locked by the first locking device 500 or the second locking device 600 to provide restraint and support for the side wall to enhance the rigidity and strength of the whole flexible U-shaped track beam, which helps to improve the smoothness of train passing.

In addition, in order to further improve the smoothness of train passage, a plurality of first locking devices 500 and a plurality of second locking devices 600 are generally disposed along the length direction of the flexible U-shaped track beam, and as one embodiment of the present invention, when the flexible U-shaped track beam 100 is connected to a vacuum pipe running laterally, as shown in fig. 14, the flexible U-shaped track beam 100 includes three first locking devices 500, the second flexible side wall 20 has three second locking grooves 20a, and the three first locking devices 500 are disposed in one-to-one correspondence with the three second locking grooves 20a, in which the three first locking devices 500 are correspondingly and clampingly disposed in the three second locking grooves 20a to lock the second flexible side wall 20 of the flexible U-shaped track beam. When the flexible U-shaped track beam 100 is connected to a vacuum pipe for straight traveling, as shown in fig. 13, the flexible U-shaped track beam 100 includes three second locking devices 600, the first flexible sidewall 10 has three first locking grooves 10a, the three second locking devices 600 are disposed in one-to-one correspondence with the three first locking grooves 10a, and at this time, the three second locking devices 600 are correspondingly and tightly fitted in the three first locking grooves 10a to lock the first flexible sidewall 10 of the flexible U-shaped track beam.

Further, in the present invention, in order to limit the traveling path of the flexible U-shaped track beam during the movement, the rigid rail base 220 may be configured to have a constraint rail 220a, and the vacuum pipe switch structure further includes a slide pile 700, the slide pile 700 is disposed on the flexible rail base 30, and when the switch driving device 400 drives the flexible U-shaped track beam 100 to move along the rigid rail, the slide pile 700 moves along the constraint rail 220a to guide the movement of the flexible U-shaped track beam 100.

In the configuration mode, the rigid rail bottom 220 is provided with the constraint slide rail, the slide piles are matched with the constraint slide rail to limit the traveling path of the flexible U-shaped rail beam in the moving process, and the longitudinal (train traveling direction) and vertical (vertical direction) limit constraints are provided for the rail beam after the flexible U-shaped rail beam is moved in place, so that the rigidity of the flexible U-shaped rail beam is improved, and the stability of the train in passing is improved.

In the present invention, in order to further improve the guidance of the flexible U-shaped track beam and the smoothness of train passage, the rigid rail bottom 220 may be configured to have a plurality of constraint slide rails 220a arranged at intervals, the vacuum pipe switch structure includes a plurality of slide piles 700, the plurality of slide piles 700 are arranged at intervals on the flexible rail bottom, and the plurality of constraint slide rails 220a and the plurality of slide piles 700 are arranged in one-to-one correspondence. As an embodiment of the present invention, as shown in fig. 12, the rigid rail base 220 has three restraint sliding rails 220a, and the three restraint sliding rails 220 are arranged at intervals along the length direction of the flexible U-shaped rail beam.

Further, in the present invention, in order to improve the sealing performance of the vacuum pipe switch structure, the sealing connection grooves are respectively disposed at the upper end edges of the first rigid blocking wall 210 and the second rigid blocking wall 230, and the lower end of the vacuum pipe cap 300 is connected to the sealing connection grooves by using the bolts 800, so that the vacuum pipe cap, the first rigid blocking wall 210, the second rigid blocking wall 230, and the rigid rail base 220 together enclose a vacuum pipe cavity. In order to ensure the sealing effect, a sealing strip 900 is disposed at the sealing connection groove, or the vacuum pipe cap 300 may be directly welded to the sealing connection groove.

In addition, in the present invention, the first rigid blocking wall 210 and the second rigid blocking wall 230 are used to limit the displacement amount of the flexible U-shaped track beam in migration, and enhance the rigidity and strength of the entire flexible U-shaped track beam by restraining and supporting one side wall of the flexible U-shaped track beam, which is helpful to improve the stability of train passing.

In order to further improve the limiting reliability of the rigid blocking wall on the flexible U-shaped beam, the rigid blocking wall and the side wall of the flexible U-shaped track beam can be designed into a convex-concave mutual embedded structure, and the side wall can limit the transverse displacement (transverse direction is perpendicular to the train running direction and vertical direction) of the flexible track beam and also limit the vertical displacement (vertical direction) of the track beam. As an embodiment of the present invention, as shown in fig. 11, the first flexible side wall 10 has a first groove 10b, the first rigid blocking wall 210 has a first protrusion 211, and the first groove 10b cooperates with the first protrusion 211 to limit the lateral displacement and the vertical displacement of the flexible U-shaped track beam 100; the second flexible side wall 20 has a second groove 20b, the second rigid blocking wall 230 has a second protrusion 231, and the second groove 20b and the second protrusion 231 cooperate to limit the lateral displacement and the vertical displacement of the flexible U-shaped track beam 100.

As another embodiment of the present invention (not shown in the figures), the first flexible side wall 10 has a first protrusion, and the first rigid blocking wall 210 has a first groove, and the first groove and the first protrusion cooperate to limit the lateral displacement and the vertical displacement of the flexible U-shaped track beam 100; the second flexible side wall 20 has a second protrusion and the second rigid blocking wall 230 has a second groove, and the second groove and the second protrusion cooperate to limit the lateral displacement and the vertical displacement of the flexible U-shaped track beam 100. In the present invention, other protrusion and groove mating forms can be adopted as long as the mutual embedding between the rigid retaining wall and the side wall of the flexible U-shaped track beam can be realized.

Further, in the present invention, the rigid rail base 220 is used for providing a vertical supporting function for the flexible U-shaped rail beam and serving as a sliding surface when the flexible U-shaped rail beam migrates, and in order to weaken the friction between the flexible U-shaped rail beam and the rigid rail base during the migration process, the upper plane of the rigid rail base 220 may be subjected to processes such as grinding, grease coating, and the like, or a special sliding rail 1000 is provided for providing a vertical support for the flexible rail beam during the migration process and reducing the friction resistance during the migration process, as shown in fig. 12 (for clarity, the vacuum duct cover and the flexible U-shaped rail beam are removed).

In addition, in the present invention, the switch driving device 400 drives the flexible U-shaped track beam to move so as to complete the switching of the train traveling direction, and in order to ensure that the vacuum pipe switch structure can still move normally when some switch driving devices 400 are out of order, the vacuum pipe switch structure may be configured to include a plurality of switch driving devices 400, a trench 220b is correspondingly provided on the rigid track 220, and the switch driving devices 400 are provided in the trench 220b as an operation space of the switch driving devices 400.

For a further understanding of the present invention, the flexible U-shaped track beam and vacuum line switch structure provided by the present invention will be described in detail below with reference to fig. 1-18.

As shown in fig. 6 to 18, there is provided a vacuum pipe switch structure according to an embodiment of the present invention, the vacuum pipeline turnout structure comprises a flexible U-shaped track beam 100, a rigid supporting track 200, a vacuum pipeline cover 300, a turnout driving device 400, three first locking devices 500, three second locking devices 600, three slide piles 700, bolts 800 and sealing strips 900, wherein the flexible U-shaped track beam comprises a first flexible side wall 10, a second flexible side wall 20 and a flexible track bottom 30, the first flexible side wall 10 and the second flexible side wall 20 are arranged in parallel, the flexible track bottom 30 is arranged at the bottom of the first flexible side wall 10 and the second flexible side wall 20 and is respectively connected with the first flexible side wall 10 and the second flexible side wall 20 to form the U-shaped track structure, the U-shaped track structure is made of elastic materials, and the U-shaped track structure can be bent and deformed in the vertical direction to realize the conversion of the driving direction of a train.

The rigid support rail 200 comprises a first rigid blocking wall 210, a rigid rail bottom 220 and a second rigid blocking wall 230, the rigid rail bottom 220 is arranged at the bottom of the first rigid blocking wall 210 and the second rigid blocking wall 230 and is respectively connected with the first rigid blocking wall 210 and the second rigid blocking wall 230, and the flexible U-shaped rail beam 100 can move between the first rigid blocking wall 210 and the second rigid blocking wall 230 along the rigid rail bottom 220 under the driving of the turnout driving device 400. The upper end edges of the first rigid blocking wall 210 and the second rigid blocking wall 230 are provided with sealing connection grooves, and the lower end of the vacuum pipe cover 300 is connected with the sealing connection grooves by using bolts 800, so that the vacuum pipe cover, the first rigid blocking wall 210, the second rigid blocking wall 230 and the rigid rail bottom 220 together enclose a vacuum pipe cavity.

When the flexible U-shaped track beam 100 is connected to a vacuum pipe for lateral traveling, as shown in fig. 14, the flexible U-shaped track beam 100 includes three first locking devices 500, the second flexible sidewall 20 has three second locking grooves 20a, the three first locking devices 500 are disposed in one-to-one correspondence with the three second locking grooves 20a, and the three first locking devices 500 are disposed in the three second locking grooves 20a in a corresponding clamping manner to lock the second flexible sidewall 20 of the flexible U-shaped track beam. When the flexible U-shaped track beam 100 is connected to a vacuum pipe for straight traveling, as shown in fig. 13, the flexible U-shaped track beam 100 includes three second locking devices 600, the first flexible sidewall 10 has three first locking grooves 10a, the three second locking devices 600 are disposed in one-to-one correspondence with the three first locking grooves 10a, and at this time, the three second locking devices 600 are correspondingly and tightly fitted in the three first locking grooves 10a to lock the first flexible sidewall 10 of the flexible U-shaped track beam.

The rigid rail bottom 220 has three constraint sliding rails 220a, three sliding piles 700 are arranged on the flexible rail bottom 30, the three sliding piles 700 are arranged in one-to-one correspondence with the three constraint sliding rails 220a, and when the turnout driving device 400 drives the flexible U-shaped rail beam 100 to move along the rigid rail, the sliding piles 700 move along the constraint sliding rails 220a to guide the movement of the flexible U-shaped rail beam 100.

In this embodiment, when the train needs to change from the straight running to the side running, first, the three second locking devices 600 and the three first locking grooves 10a are mutually unlocked, and at this time, the turnout driving device 400 acts to drive the flexible U-shaped track beam to rotate, and during the rotation of the flexible U-shaped track beam, the sliding pile 700 at the flexible track bottom 30 moves along the constraint sliding rail 220a, so as to limit the moving direction of the flexible U-shaped track beam 100 through the constraint sliding rail 220 a. When the flexible U-shaped track beam 100 is moved to the right position, three first locking devices 500 are correspondingly and tightly arranged in the three second locking grooves 20a to lock the second flexible side wall 20 of the flexible U-shaped track beam, thereby completing the change of the traveling direction of the train.

In conclusion, the invention provides the flexible U-shaped track beam and the vacuum pipeline turnout structure, the flexible U-shaped track beam utilizes the flexibility characteristic of the material of the flexible U-shaped track beam to realize the conversion of the running direction of the train, the mode has low cost, low energy consumption and convenient maintenance, and the scale and the weight of the movable structure of the turnout section are greatly reduced. The vacuum pipeline turnout structure based on the flexible U-shaped track beam reduces the construction cost of a vacuum line, is low in energy consumption in the using process and convenient to maintain, does not need to design a sealing valve for the turnout section structure, does not influence the sealing performance of the vacuum pipeline by the turnout section, and does not have the problem of endangering the running safety of a train caused by the fault of the sealing valve.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.