Damping device for rail transit

Abstract

The invention discloses a damping device for rail transit, relates to the technical field of rail transit appliances, aims at solving the problems of the rail transit appliances, and comprises a bidirectional converter body, a base arranged at the bottom of the bidirectional converter body and a supporting seat arranged at the top of the base. The bidirectional converter further comprises a multidirectional damping mechanism acting on the bidirectional converter body. The multidirectional damping mechanism comprises a vertical damping component and a horizontal damping component. When the movable plate shakes towards any end in the horizontal direction, the vibration of the bidirectional converter body towards any position in the horizontal direction is reduced under the action of abutting or stretching of the arc-shaped block and the second connecting spring at the adjacent position; therefore, the damping effect on the bidirectional converter body is more uniform and sufficient, the protection effect on the bidirectional converter body is improved, and normal operation of the bidirectional converter body is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of rail transit equipment, and in particular relates to a shock absorbing device for rail transit. Background Art

[0002] Bidirectional converters are used in rail transit vehicles. The bidirectional converter can not only provide the vehicle with a stable traction power supply, but also utilize the train braking power generation to feed back into the power grid, making it a veritable energy-saving expert. It is an indispensable equipment for rail transit vehicles and is used in conjunction with corresponding shock absorbing devices during its use.

[0003] Chinese patent application CN 210686834 U discloses a shock absorbing device for a rail transit bidirectional converter. The device can protect the bidirectional converter body through the buffer shell, reduce the vibration to which it is subjected, prevent such vibration from damaging the magnetic components inside the bidirectional converter body, and avoid damaging the structure and insulation inside the bidirectional converter body.

[0004] The above technologies all have the following defects: although they can play a protective and shock-absorbing role for the bidirectional converter, they can only play a shock-absorbing role when the bidirectional converter vibrates in the vertical direction and the left and right direction, which makes the shock-absorbing effect of the bidirectional converter have certain limitations, which is not conducive to the stable operation of the bidirectional converter. Summary of the invention

[0005] In order to solve the above technical problems, a shock absorbing device for rail transit is provided, which solves the problem that the shock absorbing device for rail transit in the prior art can only play a shock absorbing role in the vertical direction and the left and right direction when the bidirectional converter vibrates, thereby causing certain limitations in the shock absorbing effect of the bidirectional converter, which is not conducive to the stable operation of the bidirectional converter.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is: a shock absorbing device for rail transit, comprising a bidirectional converter body, a base arranged at the bottom of the bidirectional converter body, and a support seat arranged at the top of the base, characterized in that it also includes a multi-directional shock absorbing mechanism acting on the bidirectional converter body;

[0007] The multi-directional shock absorbing mechanism comprises a vertical shock absorbing component and a horizontal shock absorbing component;

[0008] The vertical shock absorbing component includes four rod grooves opened on the top surface of the support seat, an embedded rod fixed inside the rod groove, a sliding sleeve slidably mounted on the outer circumference of the embedded rod, a support rod hinged to the top of the sliding sleeve, a first connecting spring mounted on the outer circumference of the embedded rod at a position on one side of the sliding sleeve, and a plurality of dampers evenly fixed at the middle position of the top of the support seat.

[0009] Preferably, the horizontal shock-absorbing component includes an arc block that is fitted and evenly distributed on the outside of the movable plate, a plurality of inner bins that are evenly distributed on the inner cavity surface of the base, a second connecting spring that is sleeved on the outer circumference of the connecting shaft, a support column fixed to the top of the movable plate, and a buckle seat fixed to the inner cavity of the base at the top of the movable plate.

[0010] Preferably, the top of the support rod is hinged to the surface of the bottom of the bidirectional converter body, one side of the first connecting spring is fixed to the surface of the sliding sleeve at an adjacent position, the other side of the first connecting spring is fixed to the inner cavity surface of the rod groove at an adjacent position, and the top of the damper is fixed to the surface of the bottom of the bidirectional converter body.

[0011] Preferably, the connecting shaft and the inner warehouse at the adjacent position are slidably connected, one side of the second connecting spring is in contact with the surface of the arc block at the adjacent position, the other side of the second connecting spring is fixed to the inner circumferential surface of the base, and the top of the support column is fixed to the surface of the bottom of the support seat.

[0012] Preferably, the vertical shock absorbing component further includes a first cooling assembly for reducing the temperature of the first connecting spring, and the horizontal shock absorbing component further includes a second cooling component for reducing the temperature of the second connecting spring.

[0013] Preferably, the first cooling component includes a fixed cylinder fixed at the middle position of the rod grooves at two adjacent positions, a piston rod slidably inserted at the middle position of the fixed cylinder, an outlet pipe connected and fixed to one side of the outer circumference of the fixed cylinder, a plurality of first outlet holes opened at the bottom of the outlet pipe, an inlet pipe connected and fixed to the other side of the outer circumference of the fixed cylinder, and a first one-way valve fixed to the inner cavity surfaces of the inlet pipe and the outlet pipe, and the top of the piston rod passes through the fixed cylinder at the adjacent position and is fixed to the surface of the bottom of the bidirectional converter body.

[0014] Preferably, the second cooling component includes an L-shaped connecting groove connected to the top of the inner warehouse, a connecting pipe connected and fixed to the inner circumferential surface of the base near the connecting groove, a second air outlet evenly arranged at the bottom of the connecting pipe, a plug plate fixed to the surface of one side of the connecting shaft, a second one-way valve fixed to one side of the inner warehouse and the inner cavity of the second one-way valve, and two limit rods inserted through the surface of the plug plate, both sides of the limit rods are fixed to the inner cavity surface of the inner warehouse at an adjacent position, and one side of the inner cavity of the inner warehouse is connected to the outside of the base.

[0015] Preferably, the bidirectional converter body also includes a cleaning mechanism acting on the top surface of the bidirectional converter body, the cleaning mechanism includes a driving component and a friction component, the driving component includes a limit groove opened at one end of the top surface of the bidirectional converter body, a limit block slidably inserted in the limit groove, a spring telescopic rod fixed to one end of the limit block, a rotating shaft rotatably connected to the top of the limit block, a gear fixedly sleeved on the outer circumferential surface of the rotating shaft, and a rack meshingly arranged at one end of the gear, one end of the rack is fixed to the surface of the support seat, and one end of the spring telescopic rod is fixed to the inner cavity surface of the limit groove.

[0016] Preferably, the friction component includes a fixed plate fixed to the top of the rotating shaft, a cleaning plate arranged at the bottom of the fixed plate, a plurality of sliding shafts slidingly inserted on the surface of the fixed plate, a fixed disk fixed to the top of the sliding shaft, and a third connecting spring sleeved on the outer circumferential surface of the sliding shaft, the surface of the bottom of the sliding shaft is fixed to the surface of the top of the cleaning plate, one end of the third connecting spring is fixed to the surface of the fixed disk at an adjacent position, and the other end of the third connecting spring is fixed to the surface of the fixed plate.

[0017] Compared with the prior art, the advantages of the present invention are:

[0018] 1. When the bidirectional converter body shakes in the vertical direction, the sliding sleeve can collide with or stretch the first connecting spring at the adjacent position, thereby reducing the vibration in the vertical direction. When the movable plate shakes in the horizontal direction to any end, the arc block can collide with or stretch the second connecting spring at the adjacent position to reduce the vibration of the bidirectional converter body in the horizontal direction to any position, thereby making the shock absorbing effect on the bidirectional converter body more uniform and sufficient, thereby improving the protection effect on the bidirectional converter body and facilitating the normal operation of the bidirectional converter body.

[0019] 2. When the bidirectional converter body vibrates in the vertical direction, the air pressure change caused by the piston rod movement can make the airflow discharged from the first air outlet cool the first connecting spring at the adjacent position. When the movable plate shakes in the horizontal direction, the air pressure change caused by the plug plate movement can make the airflow discharged from the second air outlet cool the second connecting spring at the adjacent position, thereby avoiding the situation that the elastic modulus of the first connecting spring and the second connecting spring will be reduced due to frequent deformation in a short time, thereby improving the applicability of the device;

[0020] 3. When the bidirectional converter body shakes, the support seat shakes in the horizontal direction driven by it. The meshing action between the rack and the gear allows the angle of the rotating shaft to change, and the rebound force of the third connecting spring allows the cleaning plate to stick to the surface of the top of the bidirectional converter body, so that the rotating shaft can drive the fixed plate to swing back and forth in a certain direction along the shaking direction. Under the friction between the cleaning plate and the top surface of the bidirectional converter body, the dust attached to the top surface of the bidirectional converter body can be detached from the top surface of the bidirectional converter body, thereby avoiding the accumulation of a large amount of dust on the top surface of the bidirectional converter body and affecting the normal operation of the bidirectional converter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention in the front view direction;

[0022] Figure 2 For the present invention Figure 1 A schematic diagram of the structure enlargement at the center A;

[0023] Figure 3 For the present invention Figure 1 A schematic diagram of the structure enlarged at B in the middle;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the base and the support base in the present invention;

[0025] Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the fixing cylinder in the present invention;

[0026] Figure 6 It is a schematic diagram of a three-dimensional cross-sectional structure of a local structure in the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at C in the middle.

[0028] The numbers in the figure are:

[0029] 1. Bidirectional converter body; 2. Base; 3. Support seat; 4. Rod groove; 5. Embedded rod; 6. Sliding sleeve; 7. Support rod; 8. First connecting spring; 9. Fixed cylinder; 10. Damper; 11. Piston rod; 12. Inlet pipe; 13. Outlet pipe; 14. First outlet hole; 15. First one-way valve; 16. Movable plate; 17. Support column; 18. Snap seat; 19. Arc block; 20. Connecting shaft; 2 1. Second connecting spring; 22. Inner compartment; 23. Plug plate; 24. Limit rod; 25. Connecting groove; 26. Connecting pipe; 27. Second air outlet; 28. Second one-way valve; 29. ​​Rotating shaft; 30. Gear; 31. Rack; 32. Fixed plate; 33. Cleaning plate; 34. Sliding shaft; 35. Fixed disk; 36. Third connecting spring; 37. Limit groove; 38. Limit block; 39. Spring telescopic rod. DETAILED DESCRIPTION

[0030] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0031] Example 1

[0032] Reference Figure 1-7 As shown, a shock absorbing device for rail transit includes a bidirectional converter body 1, a base 2 arranged at the bottom of the bidirectional converter body 1, a support seat 3 arranged at the top of the base 2, and a multi-directional shock absorbing mechanism acting on the bidirectional converter body 1;

[0033] The multi-directional shock absorbing mechanism includes a vertical shock absorbing component and a horizontal shock absorbing component;

[0034] The vertical shock absorbing component includes four rod grooves 4 opened on the top surface of the support seat 3, an embedded rod 5 fixed inside the rod groove 4, a sliding sleeve 6 slidably sleeved on the outer circumference of the embedded rod 5, a support rod 7 hinged to the top of the sliding sleeve 6, a first connecting spring 8 sleeved on the outer circumference of the embedded rod 5 at a position on one side of the sliding sleeve 6, and a plurality of dampers 10 uniformly fixed at the middle position of the top of the support seat 3;

[0035] The top of the support rod 7 is hinged to the surface of the bottom of the bidirectional converter body 1, one side of the first connecting spring 8 is fixed to the surface of the sliding sleeve 6 at the adjacent position, the other side of the first connecting spring 8 is fixed to the inner cavity surface of the rod groove 4 at the adjacent position, and the top of the damper 10 is fixed to the surface of the bottom of the bidirectional converter body 1;

[0036] When the bidirectional converter body 1 shakes in the vertical direction, the angle of the support rod 7 can change, thereby driving the sleeve 6 to slide along the outer circumferential surface of the embedded rod 5 at the adjacent position to contact or stretch the first connecting spring 8 at the adjacent position to deform it. As a result, the amplitude of the vertical shaking of the bidirectional converter body 1 can be weakened under the action of the rebound force of the first connecting spring 8, thereby achieving a shock-absorbing effect on the vertical vibration of the bidirectional converter body 1. The damper 10 can provide stable support for the movement trajectory of the bidirectional converter body 1.

[0037] Please refer to Figure 1-7 As shown, the horizontal shock absorbing component includes an arc block 19 that is fitted and arranged outside the movable plate 16 and is equidistantly distributed around, a plurality of inner bins 22 that are opened on the inner cavity surface of the base 2 and are equidistantly distributed around, a second connecting spring 21 that is sleeved on the outer circumference of the connecting shaft 20, a supporting column 17 fixed to the top of the movable plate 16, and a buckle seat 18 that is fixed to the inner cavity of the base 2 and is located at the top of the movable plate 16;

[0038] The connecting shaft 20 is connected to the inner bin 22 at the adjacent position by sliding insertion, one side of the second connecting spring 21 is in contact with the surface of the arc block 19 at the adjacent position, the other side of the second connecting spring 21 is fixed to the inner circumference of the base 2, and the top of the support column 17 is fixed to the surface of the bottom of the support seat 3;

[0039] When the bidirectional converter body 1 shakes in the horizontal direction, the support seat 3 will drive the movable plate 16 to move on any side of the horizontal direction under the connection action of the support column 17. During this process, the buckle seat 18 can contact the movable plate 16 to limit its movement trajectory, so that the movable plate 16 can contact the adjacent arc block 19 to enable it to move in the horizontal direction. During this process, the arc block 19 will contact the adjacent second connecting spring 21 to cause it to deform, so that the shaking amplitude of the bidirectional converter body 1 can be weakened under the action of the rebound force of the second connecting spring 21, so that it can play a multi-directional shock-absorbing role on the horizontal vibration of the bidirectional converter body 1, so that the shock-absorbing effect on the bidirectional converter body 1 can be more uniform and sufficient, thereby improving the protection effect on the bidirectional converter body 1 and facilitating the normal operation of the bidirectional converter body 1.

[0040] Example 2

[0041] Although the above method solves the problem that the shock absorbing device for a rail transit bidirectional converter with the prior art publication number CN 210686834 U can only play a shock absorbing role in the vertical direction and the left and right direction when the bidirectional converter vibrates, from a practical point of view, when the device is installed inside a rail vehicle, the rail vehicle will be in a shaking state for a long time during driving, resulting in the first connecting spring 8 and the second connecting spring 21 being frequently deformed, which makes it easy to overheat and affect the shock absorbing effect of the first connecting spring 8 and the second connecting spring 21.

[0042] For this purpose, refer to Figure 1-7 As shown, it is worth noting that the vertical damping component further includes a first cooling component for reducing the temperature of the first connecting spring 8, and the horizontal damping component further includes a second cooling component for reducing the temperature of the second connecting spring 21;

[0043] The first cooling assembly includes a fixed cylinder 9 fixed at the middle position of the rod grooves 4 at two adjacent positions, a piston rod 11 slidably inserted at the middle position of the fixed cylinder 9, an outlet pipe 13 connected and fixed to one side of the outer peripheral surface of the fixed cylinder 9, a plurality of first outlet holes 14 opened at the bottom of the outlet pipe 13, an inlet pipe 12 connected and fixed to the other side of the outer peripheral surface of the fixed cylinder 9, and a first one-way valve 15 fixed to the inner cavity surfaces of the inlet pipe 12 and the outlet pipe 13. The top of the piston rod 11 passes through the adjacent fixed cylinder 9 and is fixed to the surface of the bottom of the bidirectional converter body 1.

[0044] When the bidirectional converter body 1 moves in the vertical direction, the piston rod 11 will move vertically with the interior of the adjacent fixed cylinder 9, so that the air pressure inside the fixed cylinder 9 can change. Due to the setting of the first one-way valve 15, the air inside the fixed cylinder 9 can be transported to the interior of the outlet pipe 13, but the air inside the outlet pipe 13 will not be transported to the interior of the fixed cylinder 9, and the air inside the intake pipe 12 will not be discharged to the outside, but the outside air can enter the interior of the fixed cylinder 9 from the intake pipe 12, so that when the piston rod 11 moves vertically downward in the inner cavity of the adjacent fixed cylinder 9, the air flow can be discharged from the first air outlet 14 to blow to the first connecting spring 8 at the adjacent position, so that it can have an air cooling effect to reduce the stability of the first connecting spring 8, and when the piston rod 11 moves vertically upward in the inner cavity of the adjacent fixed cylinder 9, the outside can be sucked into the interior of the fixed cylinder 9 from the intake pipe 12, so that when the piston rod 11 moves vertically downward, air flow can be generated at the first air outlet 14 again to cool the first connecting spring 8.

[0045] The second cooling component includes an L-shaped connecting groove 25 connected to the top of the inner bin 22, a connecting pipe 26 connected and fixed to the inner circumferential surface of the base 2 near the connecting groove 25, a second air outlet 27 evenly arranged at the bottom of the connecting pipe 26, a plug plate 23 fixed to one side of the connecting shaft 20, a second one-way valve 28 fixed to one side of the inner bin 22 and the inner cavity of the second one-way valve 28, and two limit rods 24 inserted through the surface of the plug plate 23, the two sides of the limit rods 24 are fixed to the inner cavity surface of the inner bin 22 at the adjacent position, and one side of the inner cavity of the inner bin 22 is connected to the outside of the base 2;

[0046] Due to the setting of the second one-way valve 28, the air in the inner cavity of the inner bin 22 will not be discharged to the outside of the base 2 but can flow into the inside of the connecting groove 25 at the adjacent position. The outside air can enter the inner cavity of the inner bin 22 from one side of the inner bin 22, but the air inside the connecting groove 25 will not flow into the inner cavity of the inner bin 22 at the adjacent position. Therefore, when the movable plate 16 shakes in the horizontal direction, it will contact the arc block 19, so that the connecting shaft 20 drives the plug plate 23 to slide in the inner cavity of the inner bin 22 at the adjacent position away from the movable plate 16, thereby causing the air pressure in the inner cavity of the inner bin 22 to change, so that The airflow generated in the inner cavity of the inner warehouse 22 can be discharged from the second air outlet 27 through the connecting groove 25 to cool the second connecting spring 21 at the adjacent position to reduce the temperature of the second connecting spring 21. When the plug plate 23 slides in the direction close to the support column 17, the external air of the base 2 can be introduced into the interior of the inner warehouse 22 at the adjacent position, so that when the plug plate 23 moves in the direction away from the movable plate 16, airflow can be generated again in the connecting groove 25 to cool the first connecting spring 8. During this process, the limit rod 24 can limit the movement trajectory of the plug plate 23 to make its movement smoother.

[0047] Example 3

[0048] Since a large amount of dust is easily accumulated on the top of the bidirectional converter body 1 during long-term use, the dust is easy to affect the heat dissipation of the top surface of the bidirectional converter body 1 and easily enter the interior of the bidirectional converter body 1, which is easy to affect the use of electronic components inside the bidirectional converter body 1.

[0049] The bidirectional converter body 1 further includes a cleaning mechanism acting on the top surface of the bidirectional converter body 1, and the cleaning mechanism includes a driving component and a friction component;

[0050] The driving component includes a limit groove 37 opened at one end of the top surface of the bidirectional converter body 1, a limit block 38 slidably inserted in the limit groove 37, a spring telescopic rod 39 fixed to one end of the limit block 38, a rotating shaft 29 rotatably connected to the top of the limit block 38, a gear 30 fixedly sleeved on the outer circumference of the rotating shaft 29, and a rack 31 meshingly arranged at one end of the gear 30, one end of the rack 31 is fixed to the surface of the support seat 3, and one end of the spring telescopic rod 39 is fixed to the inner cavity surface of the limit groove 37;

[0051] When the bidirectional converter body 1 drives the support seat 3 to shake in the horizontal direction, the force of a certain motion trajectory causes the rack 31 and the gear 30 to mesh, causing the rotating shaft 29 to rotate, and under the resistance force between the rack 31 and the gear 30, the limit block 38 can slide with the inner cavity of the limit groove 37, causing the spring telescopic rod 39 to deform, so that when the bidirectional converter body 1 drives the support seat 3 to reset, the limit block 38 can be reset under the action of the rebound force of the spring telescopic rod 39, so that the gear 30 and the rack 31 are in a meshing state again.

[0052] The friction component includes a fixed plate 32 fixed to the top of the rotating shaft 29, a cleaning plate 33 arranged at the bottom of the fixed plate 32, a plurality of sliding shafts 34 inserted and slidably penetrated on the surface of the fixed plate 32, a fixed disk 35 fixed to the top of the sliding shaft 34, and a third connecting spring 36 sleeved on the outer peripheral surface of the sliding shaft 34, the surface of the bottom of the sliding shaft 34 is fixed to the surface of the top of the cleaning plate 33, one end of the third connecting spring 36 is fixed to the surface of the adjacent fixed disk 35, and the other end of the third connecting spring 36 is fixed to the surface of the fixed plate 35;

[0053] When the bidirectional converter body 1 is in a stationary state, the cleaning plate 33 is tightly fitted to the surface of the top of the bidirectional converter body 1 and the third connecting spring 36 is in a state of being compressed to a certain length. When the bidirectional converter body 1 shakes horizontally along a certain trajectory, the fixed plate 32 can drive the cleaning plate 33 to change its angle under the drive of the rotating shaft 29. In this process, when the bidirectional converter body 1 vibrates to a certain extent in the vertical direction, the third connecting spring 36 can ensure that the fixed plate 32 always fits the surface of the top of the bidirectional converter body 1 when the bidirectional converter body 1 moves vertically downward under the action of the rebound force of the third connecting spring 36. Therefore, the friction force between the cleaning plate 33 and the top surface of the bidirectional converter body 1 allows the dust attached to the top surface of the bidirectional converter body 1 to be detached from the top surface of the bidirectional converter body 1, thereby avoiding the accumulation of a large amount of dust on the top surface of the bidirectional converter body 1 and affecting the normal operation of the bidirectional converter body 1.

[0054] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A shock absorbing device for rail transit, comprising a bidirectional converter body (1), a base (2) arranged at the bottom of the bidirectional converter body (1), and a support seat (3) arranged at the top of the base (2), characterized in that: It also includes a multi-directional shock absorbing mechanism acting on the bidirectional converter body (1); The multi-directional shock absorbing mechanism comprises a vertical shock absorbing component and a horizontal shock absorbing component; The vertical shock absorbing component comprises four rod grooves (4) provided on the top surface of the support seat (3), an embedded rod (5) fixed inside the rod groove (4), a sliding sleeve (6) slidably sleeved on the outer circumference of the embedded rod (5), a support rod (7) hinged to the top of the sliding sleeve (6), a first connecting spring (8) sleeved on the outer circumference of the embedded rod (5) at a position on one side of the sliding sleeve (6), and a plurality of dampers (10) uniformly fixed at the middle position of the top of the support seat (3); The horizontal shock-absorbing component comprises a movable plate (16) arranged at the bottom of the inner cavity of the base (2), an arc-shaped block (19) arranged to be evenly spaced and distributed around the outside of the movable plate (16), a plurality of inner chambers (22) opened on the inner cavity surface of the base (2) and arranged to be evenly spaced and distributed around, a second connecting spring (21) sleeved on the outer peripheral surface of the connecting shaft (20), a supporting column (17) fixed to the top of the movable plate (16), and a buckle seat (18) fixed to the inner cavity of the base (2) and located at the top of the movable plate (16).

2. A shock absorbing device for rail transit according to claim 1, characterized in that: The top of the support rod (7) is hinged to the surface of the bottom of the bidirectional converter body (1), one side of the first connecting spring (8) is fixed to the surface of the sliding sleeve (6) at an adjacent position, the other side of the first connecting spring (8) is fixed to the inner surface of the rod groove (4) at an adjacent position, and the top of the damper (10) is fixed to the surface of the bottom of the bidirectional converter body (1).

3. A shock absorbing device for rail transit according to claim 2, characterized in that: The connecting shaft (20) is connected to the inner bin (22) at the adjacent position by means of a sliding insertion arrangement, one side of the second connecting spring (21) contacts the surface of the arc block (19) at the adjacent position, the other side of the second connecting spring (21) is fixed to the inner circumferential surface of the base (2), and the top of the support column (17) is fixed to the surface of the bottom of the support seat (3).

4. A shock absorbing device for rail transit according to claim 3, characterized in that: The vertical damping component further comprises a first cooling assembly for reducing the temperature of the first connecting spring (8), and the horizontal damping component further comprises a second cooling assembly for reducing the temperature of the second connecting spring (21).

5. A shock absorbing device for rail transit according to claim 4, characterized in that: The first cooling component comprises a fixed cylinder (9) fixed at the middle position of the rod grooves (4) at two adjacent positions, a piston rod (11) slidably inserted at the middle position of the fixed cylinder (9), an outlet pipe (13) connected and fixed to one side of the outer peripheral surface of the fixed cylinder (9), a plurality of first outlet holes (14) opened at the bottom of the outlet pipe (13), an intake pipe (12) connected and fixed to the other side of the outer peripheral surface of the fixed cylinder (9), and a first one-way valve (15) fixed to the inner cavity surfaces of the intake pipe (12) and the outlet pipe (13), and the top of the piston rod (11) passes through the fixed cylinder (9) at the adjacent position and is fixed to the surface of the bottom of the bidirectional converter body (1).

6. A shock absorbing device for rail transit according to claim 4, characterized in that: The second cooling component comprises an L-shaped connecting groove (25) connected to the top of the inner bin (22), a connecting pipe (26) connected and fixed to the inner circumferential surface of the base (2) near the connecting groove (25), a second air outlet (27) evenly arranged at the bottom of the connecting pipe (26), a plug plate (23) fixed to the surface of one side of the connecting shaft (20), a second one-way valve (28) fixed to one side of the inner bin (22) and the inner cavity of the second one-way valve (28), and two limit rods (24) inserted through the surface of the plug plate (23), the two sides of the limit rods (24) are fixed to the inner cavity surface of the inner bin (22) at an adjacent position, and one side of the inner cavity of the inner bin (22) is connected to the outside of the base (2).

7. A shock absorbing device for rail transit according to claim 1, characterized in that: The bidirectional converter body (1) also includes a cleaning mechanism acting on the top surface of the bidirectional converter body (1), the cleaning mechanism including a driving component and a friction component, the driving component including a limit groove (37) opened at one end of the top surface of the bidirectional converter body (1), a limit block (38) slidably inserted in the limit groove (37), a spring telescopic rod (39) fixed to one end of the limit block (38), a rotating shaft (29) rotatably connected to the top of the limit block (38), a gear (30) fixedly sleeved on the outer peripheral surface of the rotating shaft (29), and a rack (31) meshingly arranged at one end of the gear (30), one end of the rack (31) is fixed to the surface of the support seat (3), and one end of the spring telescopic rod (39) is fixed to the inner cavity surface of the limit groove (37).

8. A shock absorbing device for rail transit according to claim 7, characterized in that: The friction component comprises a fixed plate (32) fixed to the top of the rotating shaft (29), a cleaning plate (33) arranged at the bottom of the fixed plate (32), a plurality of sliding shafts (34) inserted and slidably penetrated on the surface of the fixed plate (32), a fixed disk (35) fixed to the top of the sliding shaft (34), and a third connecting spring (36) sleeved on the outer peripheral surface of the sliding shaft (34).

9. A shock absorbing device for rail transit according to claim 8, characterized in that: The surface at the bottom of the sliding shaft (34) is fixed to the surface at the top of the cleaning plate (33), one end of the third connecting spring (36) is fixed to the surface of the adjacent fixed plate (35), and the other end of the third connecting spring (36) is fixed to the surface of the fixed plate (32).

Images