1. A double-row track overturn prevention device comprises a roller box body module and an overturn prevention reverse roller module; the method is characterized in that: the roller box body module is supported on the double-row rails; two sides of the roller box body module are provided with anti-overturning anti-roller modules; the two anti-overturning roller modules are matched with the double-row rails, so that the roller box body module is prevented from overturning or separating from the double-row rails; the double-row track comprises two I-shaped tracks (3) arranged side by side. The roller box body module comprises a middle supporting block, a supporting frame (1) and a roller (2); the two support frames (1) are respectively arranged at two sides of the middle support block; the bottom parts of the two support frames (1) are respectively supported with a roller; the rollers (2) on the two support frames are respectively supported on the two I-shaped rails (3) in a rolling manner;

the overturn-preventing reverse roller module comprises a connecting rod (10), a connecting rod supporting suspension spring (6), an overturn-preventing wheel (7), an overturn-preventing wheel shaft (12), a friction loss assembly and a buffer spring (15); the inner end of the connecting rod (10) is rotatably connected with the support frame (1), and the outer end is fixed with a mounting block; a connecting rod supporting suspension spring (6) is arranged between the connecting rod (10) and the support frame (1); the connecting rod supports the suspension spring (6) so that the connecting rod (10) is kept in an inclined state in an initial state; the mounting block is provided with a mounting blind hole with an opening facing the support frame (1); the friction wear component is connected with the mounting blind hole in a sliding manner, and has radial extrusion force on the inner side wall of the mounting blind hole; a buffer spring (15) is arranged between the inner end faces of the blind holes of the friction wear component to be installed; the inner end of the overturn-preventing wheel shaft (12) is fixed with the friction wear component, and the outer end is supported with an overturn-preventing wheel (7); the overturn-preventing wheel (7) extends into the corresponding groove at the outer side of the I-shaped track (3) and is close to the upper wing plate of the I-shaped track (3).

2. The double row track anti-overturning device as claimed in claim 1, wherein: the two support frames (1) are coaxially and rotatably connected with the two side surfaces of the middle support block.

3. The double row track anti-overturning device as claimed in claim 1, wherein: an upper connecting piece (4) is fixed at the center of the top of the support frame (1); the upper connecting piece (4) is fixedly connected with the moving device above.

4. The double row track anti-overturning device as claimed in claim 1, wherein: a fixed shaft (9) and a first hook block (5) are fixed on the outer side surface of the support frame (1); the inner end of the connecting rod (10) and the fixed shaft (9) form a revolute pair, and the outer end is fixed with a second hook block (11); two ends of the buffer spring (15) are connected with the first hook block (5) and the second hook block (11).

5. The double row track anti-overturning device as claimed in claim 1, wherein: and two ends of the connecting rod supporting suspension spring (6) are fixedly connected with the friction loss component and the inner end face of the mounting blind hole respectively.

6. The double row track anti-overturning device as claimed in claim 1, wherein: the friction wear assembly comprises a shaft sleeve block (13), a spring buffer plate (16), a friction block (14) and a radial spring (17); the two friction blocks (14) are arranged between the shaft sleeve block (13) and the spring buffer plate (16); one or more radial springs (17) are arranged between the two friction blocks (14); the two friction blocks (14) are propped against the inner side wall of the mounting blind hole under the elastic force of the radial spring (17).

7. The double row track anti-overturning device as claimed in claim 6, wherein: the opposite side surfaces of the two friction blocks (14) are fixedly connected through a radial spring ejector rod (18); the radial spring (17) is sleeved on the radial spring ejector rod (18), and two ends of the radial spring are respectively propped against the two friction blocks (14).

8. The double row track anti-overturning device as claimed in claim 1, wherein: a round table surface is arranged on the side surface of the overturn-preventing wheel (7); the conical degree of the round table surface of the overturn-preventing wheel (7) corresponds to the inclination angle of the lower edge surface of the upper wing plate of the corresponding I-shaped track.

9. The double row track anti-overturning device as claimed in claim 1, wherein: in an initial state, the distance between the overturn-preventing wheel and the corresponding upper wing plate of the I-shaped track is larger than or equal to the flatness error of the lower edge surface of the upper wing plate of the I-shaped track.

10. The double row track anti-overturning device as claimed in claim 1, wherein: the I-shaped track (3) is linear or circular arc.

Background

The running and guiding of the carriages travelling on the rails is entirely dependent on the contact between the rollers and the wheel tracks, and the constraint on the rollers is often insufficient, which entails the risk of derailment of the trolley in extreme conditions. At present, devices and methods for avoiding overturning hazards at home and abroad are few, mainly limit the transverse displacement of a moving machine, cannot play a role in preventing longitudinal overturning or have high cost, complex installation and no adjustment, are often installed only in a turning dangerous area, and a trolley device running on a track is often overturned due to various unexpected reasons, so that the protection effect is limited.

Disclosure of Invention

The invention aims to solve the problem that the prior art is difficult to realize that a sliding box body on an I-shaped track is difficult to resist disturbance in the longitudinal direction and the transverse direction, and provides a double-row track overturn prevention device.

The invention comprises a roller box body module and an overturn-preventing reverse roller module. The roller box body module is supported on the double-row rails. The both sides of gyro wheel box module all are provided with the anti-gyro wheel module that overturns. The two anti-overturning roller modules are matched with the double-row rails, so that the roller box body module is prevented from overturning or separating from the double-row rails. The double-row track comprises two I-shaped tracks arranged side by side. The roller box body module comprises a middle supporting block, a supporting frame and a roller. The two support frames are respectively arranged on two sides of the middle support block. The bottom parts of the two support frames are respectively supported with a roller. The rollers on the two supporting frames are respectively supported on the two I-shaped rails in a rolling manner.

The overturn-preventing reverse roller module comprises a connecting rod, a connecting rod supporting suspension spring, an overturn-preventing wheel shaft, a friction loss assembly and a buffer spring. The inner end of the connecting rod is rotatably connected with the supporting frame, and the outer end of the connecting rod is fixed with the mounting block. A connecting rod supporting suspension spring is arranged between the connecting rod and the supporting frame. The link supports the suspension spring such that the link maintains a tilted state in an initial state. The mounting block is provided with a mounting blind hole with an opening facing the support frame. The friction wear assembly is connected with the installation blind hole in a sliding mode, and the friction wear assembly has radial extrusion force on the inner side wall of the installation blind hole. And a buffer spring is arranged between the inner end faces of the blind holes to be installed on the friction wear component. The inner end of the overturn-preventing wheel shaft is fixed with the friction wear assembly, and the outer end of the overturn-preventing wheel shaft is supported with an overturn-preventing wheel. The overturn-preventing wheel extends into the corresponding groove at the outer side of the I-shaped track and is close to the upper wing plate of the I-shaped track.

Preferably, the two support frames are coaxially and rotatably connected with the two side surfaces of the middle support block.

Preferably, an upper connecting piece is fixed at the center of the top of the support frame. The upper connecting piece is fixedly connected with the moving device above.

Preferably, a fixed shaft and a first hook block are fixed on the outer side surface of the support frame. The inner end of the connecting rod and the fixed shaft form a revolute pair, and the outer end of the connecting rod is fixed with a second hook block. Two ends of the buffer spring are connected with the first hook block and the second hook block.

Preferably, two ends of the connecting rod supporting suspension spring are fixedly connected with the friction wear assembly and the inner end face of the mounting blind hole respectively.

Preferably, the friction wear assembly comprises a bushing block, a spring buffer plate, a friction block and a radial spring. Two friction blocks are arranged between the shaft sleeve block and the spring buffer plate. One or more radial springs are arranged between the two friction blocks. The two friction blocks are propped against the inner side wall of the mounting blind hole under the elastic force action of the radial spring.

Preferably, the opposite side surfaces of the two friction blocks are fixedly connected through a radial spring ejector rod. The radial spring is sleeved on the radial spring ejector rod, and two ends of the radial spring are respectively propped against the two friction blocks.

Preferably, the side of the anti-overturning wheel is provided with a round table surface. The conical degree of the circular table top of the overturn-preventing wheel corresponds to the inclination angle of the lower edge surface of the upper wing plate of the corresponding I-shaped track.

Preferably, in the initial state, the distance between the overturn-preventing wheel and the corresponding upper wing plate of the I-shaped track is larger than or equal to the flatness error of the lower edge surface of the upper wing plate of the I-shaped track.

Preferably, the I-shaped track (3) is linear or circular arc.

The invention has the beneficial effects that:

1. the double-row track anti-overturning roller device can prevent the roller box body device moving on the track from transversely and longitudinally displacing, can also prevent the roller box body device from overturning, has strong protection effect, and can realize the whole-course derailment protection of the device.

2. The invention can automatically restore the original position no matter the displacement is longitudinal or transverse, does not need to be manually installed and corrected for the second time, and can consume the kinetic energy of the transverse movement in a friction heat generating mode during the transverse displacement, thereby achieving the effect of reducing the disturbance displacement.

3. The whole device of the invention comprises a roller box body, double rows of tracks, a track inclination overturn-preventing reverse roller and other parts, wherein the overturn-preventing wheel is arranged on a bearing, the overturn-preventing wheel shaft, a shaft sleeve block, a radial ejector rod and the like are easy to manufacture, the bearing, a buffer spring and the like are standard components, so that the device is convenient to disassemble and replace in the later period, and has the advantages of simple structure, convenient installation, lower cost and easy engineering realization.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic front view of the present invention;

FIG. 4 is a partially enlarged cross-sectional view of portion B of FIG. 3;

FIG. 5 is a schematic view of the movement of the connecting rod in the original state according to the present invention;

fig. 6 is a schematic diagram of the movement of the connecting rod to the limit state in the present invention.

Detailed Description

The invention is further described below with reference to the accompanying drawings.

As shown in fig. 1 and 3, a double-row track overturn prevention device comprises a roller box module and an overturn prevention anti-roller module. The roller box modules are supported on the double rows of rails. The both sides of gyro wheel box module all are provided with the anti-gyro wheel module that overturns. The two anti-overturning roller modules are matched with the double-row rails, so that the roller box body module is prevented from overturning or separating from the double-row rails. The double-row track comprises two linear or arc I-shaped tracks 3 which are arranged side by side. The roller box body module comprises a middle supporting block, a supporting frame 1, rollers 2 and an upper connecting piece 4. The two support frames 1 are coaxially and rotatably connected with the two side surfaces of the middle support block. The front end and the rear end of the bottoms of the two support frames 1 are respectively supported with a roller 2. The rollers 2 on the two supporting frames are respectively supported on the two I-shaped rails 3 in a rolling manner. The upper connecting piece 4 is fixed at the center of the top of the support frame 1 and is used for being connected with the moving device above through a flange plate.

As shown in fig. 2, the outer sides of the two support frames 1 are both provided with anti-overturning anti-rolling wheel modules. The anti-overturning anti-rolling wheel module comprises a connecting rod 10, a connecting rod supporting suspension spring 6, an anti-overturning wheel 7, a bearing 8, an anti-overturning wheel shaft 12, a friction loss component and a buffer spring 15. A fixed shaft 9 and a first hook block 5 are fixed on the outer side surface of the support frame 1. The inner end of the connecting rod 10 and the fixed shaft 9 form a revolute pair, and the outer end is fixed with a second hook block 11. The two ends of the buffer spring 15 are connected with the first hook block 5 and the second hook block 11. The outer end of the connecting rod 10 is fixed with a mounting block. The mounting block is provided with a blind mounting hole with an opening facing the support frame 1.

As shown in fig. 4, the friction wear assembly comprises a bushing block 13, a spring buffer plate 16, a friction block 14, a radial spring 17 and a radial spring plunger 18. The two friction blocks 14 are arranged at intervals, and opposite side surfaces are fixedly connected through two radial spring ejector rods 18. Each radial spring ejector rod 18 is sleeved with a radial spring 17. Two ends of the radial spring 17 respectively abut against the two friction blocks 14. The inner edges of the two friction blocks 14 are fixed with the outer side of the spring buffer plate 16. The outer edges of the two friction blocks 14 are clamped and fixed with the spring buffer plate 16. The friction loss component is connected with the installation blind hole in a sliding mode. The two friction blocks 14 are propped against the inner side wall of the mounting blind hole under the elastic force of the radial spring 17. The mounting blind hole is provided with a buffer spring 15. The two ends of the buffer spring 15 respectively abut against the bottom surface of the installation blind hole and the inner side surface of the spring buffer plate 16 in the friction wear assembly.

The inner end of the overturn-preventing wheel shaft 12 is fixed with the outer end of the shaft sleeve block 13. The anti-overturn wheel 7 is supported at the outer end of the anti-overturn wheel shaft 12 through a bearing 12. The side surface of the overturn-preventing wheel 7 is provided with a round table surface. The conical degree of the circular table top of the overturn-preventing wheel 7 corresponds to the inclination angle of the lower edge surface of the upper wing plate of the corresponding I-shaped track. The overturn-preventing wheel 7 extends into the groove at the outer side of the corresponding I-shaped track and is contacted with the lower edge surface of the upper wing plate of the I-shaped track.

The working principle of the invention is as follows:

a target object required to slide along the double-row guide rails is supported on the double-row guide rails by using a plurality of double-row rail overturn prevention devices. The target object in this embodiment is a train car.

When the double-row track overturn preventing device is transversely disturbed, the whole double-row track overturn preventing device horizontally moves, and the lower edge surface of the upper wing plate of one I-shaped track 3 is in contact with the overturn preventing wheel 7. When the roller box body module transversely moves and the overturn-preventing wheel 7 is blocked by the I-shaped rail 3, the friction block in the friction loss assembly frictionally slides relative to the inner side wall of the mounting blind hole of the mounting block, so that the kinetic energy of the transverse movement of the overturn-preventing device with the double rows of rails is consumed through frictional heat generation, and the transverse movement of the overturn-preventing device with the double rows of rails caused by transverse disturbance is reduced. Meanwhile, the friction wear assembly compresses the buffer spring 15 to generate a reset elastic force, and the double-row track overturn preventing device is driven to reset after the transverse disturbance is eliminated.

As shown in fig. 5 and 6, when the double-row track anti-overturning device is subjected to longitudinal disturbance to generate an overturning trend, because one side of the roller box module is lifted or generates a lifting trend under the action of the longitudinal disturbance, the elastic force of the connecting rod supporting suspension spring 6 is transmitted to the i-shaped track 3 through the anti-overturning wheel 7, so that the double-row track anti-overturning device is pulled, and the phenomenon that the overturning amplitude of the double-row track anti-overturning device is too large is avoided. When the longitudinal disturbance is eliminated, the connecting rod supporting suspension spring 6 drives the connecting rod 10 to recover the original state, so that the whole double-row track overturn preventing device is reset.

For a straight i-shaped track 3, the link 10 is initially at an angle θ to the vertical. When the connecting rod 10 rotates by an angle theta, the vertical displacement of the overturn-preventing wheel 7 relative to the roller box module is h. h is smaller than the longitudinal safety limit displacement of the roller box body module, so that the phenomenon that the longitudinal displacement is too large and the double-row track overturn preventing device overturns is prevented.