A rail vehicle and its door auxiliary locking device

Abstract

This invention discloses an auxiliary locking device for a rail vehicle and its door, comprising a mounting base, a first connecting rod assembly, a second connecting rod assembly, a third connecting rod, a connecting plate assembly, a swing seat, and a roller assembly located on the swing seat. A driving mechanism drives the connecting plate assembly to rotate clockwise to the locked state, and then drives it to rotate counterclockwise to bring the door to an open state away from the base. This auxiliary locking device enables active locking of the door and achieves over-dead-point locking through a connecting rod structure. It features reliable locking, small footprint, simple structure, and convenient maintenance, improving the safety and reliability of the rail vehicle door system, effectively ensuring passenger safety, and enhancing sealing performance to ensure the orderly operation of the train.

Description

Technical Field

[0001] This invention relates to the field of rail transit equipment technology, and more particularly to an auxiliary locking device for the door of a rail vehicle in rail transit equipment. Background Technology

[0002] As a crucial component of rail vehicles, the passenger compartment side doors are vital to the safety and reliability of vehicle operation. During operation, to ensure the safety and comfort of vehicle operation, the door system must lock reliably and the door panels must be tightly sealed.

[0003] Existing rail vehicle sliding door systems mostly use a top-drive mechanism to open, close, and lock the door panels. The door panels act only as follow-up components, moving together with the drive mechanism, without an independent locking device. Consequently, the overall stability of the door panels is poor. Summary of the Invention

[0004] The purpose of this invention is to provide an auxiliary locking device for the door of a rail vehicle, which solves the technical problem of poor door stability caused by the existing rail vehicle sliding door system, which only uses a top drive mechanism to drive the door opening and closing.

[0005] To achieve the above-mentioned objectives, the auxiliary locking device for the door of a rail vehicle provided by this invention adopts the following technical solution:

[0006] A door auxiliary locking device for a rail vehicle includes: a mounting base assembly, a first link assembly, a second link assembly, a third link assembly, a connecting plate assembly, a swing seat, and a roller assembly located on the swing seat, wherein the roller assembly is assembled with the guide rail of the door.

[0007] The mounting base assembly includes a base and a connecting rod assembly shaft, a connecting rod assembly shaft, a first connecting plate assembly shaft, and a stop located on the base. The first connecting plate assembly shaft is located between the first connecting rod assembly and the second connecting rod assembly.

[0008] The first connecting rod assembly includes a connecting rod one and a connecting rod two assembly shaft located on the connecting rod one, a first assembly hole of the connecting rod one and a second assembly hole of the connecting rod one. The connecting rod two assembly shaft is located between the first assembly hole of the connecting rod one and the second assembly hole of the connecting rod one. The first assembly hole of the connecting rod one is rotatably assembled with the connecting rod one assembly shaft, and the second assembly hole of the connecting rod one is rotatably assembled with the swing seat.

[0009] The connecting rod three includes a first mounting hole and a second mounting hole. The first mounting hole is rotatably assembled with the mounting shaft of the connecting rod three; the second mounting hole is rotatably assembled with the swing seat.

[0010] The second connecting rod assembly includes a second connecting rod, a second connecting plate assembly shaft located on the second connecting rod, and a second connecting rod assembly hole, wherein the second connecting rod assembly hole is rotatably assembled with the second connecting rod assembly shaft;

[0011] The connecting plate comprises a connecting plate, a drive shaft located on the connecting plate, a first mounting hole and a second mounting hole of the connecting plate. The first mounting hole of the connecting plate is rotatably assembled with the first mounting shaft of the connecting plate, and the second mounting hole of the connecting plate is rotatably assembled with the second mounting shaft of the connecting plate. The drive shaft is assembled with a drive mechanism, and the drive mechanism is used to drive the drive shaft to rotate clockwise or counterclockwise around the first mounting shaft of the connecting plate.

[0012] The drive mechanism drives the drive shaft to rotate clockwise around the first connecting plate assembly shaft until the connecting plate contacts the stop. At this point, the door leaf is in a locked state close to the base, and the second connecting plate assembly shaft is lower than the line connecting the first connecting plate assembly shaft and the second connecting rod assembly shaft. The drive shaft drive mechanism drives the drive shaft to rotate counterclockwise around the first connecting plate assembly shaft so that the door leaf is in an open state away from the base.

[0013] As described above, in the door auxiliary locking device of the rail vehicle, when the door is in the open state away from the base, the axis of the drive shaft coincides with the axis of the connecting rod assembly shaft.

[0014] As described above, in the door auxiliary locking device of the rail vehicle, within the range of rotation of the drive shaft around the first connecting plate assembly shaft, the distance between the first connecting plate assembly shaft and the second connecting rod assembly shaft is greater than the distance between the second connecting plate assembly shaft and the second connecting rod assembly shaft.

[0015] As described above, in the auxiliary locking device for the door of a rail vehicle, the swing seat includes a U-shaped part and a roller assembly assembly part, and the ends of the connecting rod one and the connecting rod three are located within the space of the U-shaped part and are rotatably assembled with the U-shaped part.

[0016] As described above, the auxiliary locking device for the door of a rail vehicle includes a connecting plate body and a limiting rod located on the connecting plate body, the limiting rod being used to contact the stop.

[0017] As described above, in the auxiliary locking device for the door of a rail vehicle, the plane containing the second connecting rod is located between the plane containing the first connecting rod and the plane containing the connecting rod and the plane containing the connecting plate.

[0018] As described above, the auxiliary locking device for the door of a rail vehicle includes a base body and a first base portion, a second base portion, and a third base portion connected to one end of the base body. The second base portion is located between the first base portion and the third base portion. The first base portion and the third base portion are arranged at a certain angle to the base body and the second base portion. The first connecting rod assembly shaft and the stop are located on the second base portion, and the third connecting rod assembly shaft and the first connecting plate assembly shaft are located on the base body.

[0019] As described above, the auxiliary locking device for the door of the rail vehicle has an opening slot for vehicle assembly on both the first base portion and the third base portion, and an assembly hole for vehicle assembly is provided on the base base.

[0020] As described above, in the auxiliary locking device for the door of a rail vehicle, the distance between the middle part of the connecting rod three and the connecting rod one is greater than the distance between the end of the connecting rod three and the connecting rod one, and the first connecting plate assembly shaft is located between the middle part of the connecting rod three and the connecting rod one.

[0021] A rail vehicle includes a car body and a door located on the car body. The rail vehicle includes the aforementioned door auxiliary locking device. The base is mounted on the car body, and the roller assembly is assembled with the door.

[0022] Compared with existing technologies, the advantages and positive effects of this invention are as follows: The auxiliary locking device for the door of a rail vehicle of this invention includes a mounting base assembly, a first connecting rod assembly, a second connecting rod assembly, a third connecting rod, a connecting plate assembly, a swing seat, and a roller assembly located on the swing seat. A driving mechanism drives the connecting plate assembly to rotate clockwise to the locked state, and also drives the connecting plate assembly to rotate counterclockwise to bring the door to the open state away from the base. This auxiliary locking device can achieve active locking of the door, and achieves over-dead-point locking through the connecting rod structure. It features reliable locking, small space occupation, simple structure, and convenient maintenance, improving the safety and reliability of the rail vehicle door system, effectively ensuring passenger safety, and improving sealing performance, thus effectively ensuring the orderly operation of the train.

[0023] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a door auxiliary locking device for a rail vehicle according to a specific embodiment of the present invention.

[0025] Figure 2 for Figure 1 Exploded view.

[0026] Figure 3This is a schematic diagram of the mounting base composition in a specific embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the first connecting rod in a specific embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the second connecting rod in a specific embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the connecting plate composition in a specific embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the locking principle in a specific embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of the locked state in a specific embodiment of the present invention.

[0032] Figure 9 This is a schematic diagram of the open state in a specific embodiment of the present invention.

[0033] Figure 10 This is a schematic diagram of the locked state of a specific embodiment of the present invention after the door leaf is assembled.

[0034] Figure 11 This is a schematic diagram of the open state of the door after assembly, according to a specific embodiment of the present invention. Detailed Implementation

[0035] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] like Figure 1-10 As shown, the door auxiliary locking device of the rail vehicle in this embodiment includes: mounting base assembly 1, first connecting rod assembly 2, second connecting rod assembly 3, connecting rod 3 8, connecting plate assembly 4, swing seat 6 and roller assembly 7 located on swing seat 6, and roller assembly 7 is assembled with door guide rail.

[0037] One end of both the first link assembly 2 and the third link 8 is rotatably connected to the mounting base assembly 1, and the other end of both the first link assembly 2 and the third link 8 is rotatably connected to the swing seat 6. The second link assembly 3 is rotatably connected to the first link assembly 2. The connecting plate assembly 4 is rotatably connected to the mounting base assembly 1 and the second link assembly 3. A roller assembly 7 is provided on the swing seat 6, and the roller assembly 7 is assembled with the door leaf. The rotation of the connecting plate assembly 4 drives the rotation of the second link assembly 3, which in turn drives the second link assembly 3 and the third link 8 to rotate, thereby causing the swing seat 6 to swing, realizing the locking and opening of the door leaf.

[0038] Mounting bracket assembly 1 is a fastener used for mounting on the vehicle body. Mounting bracket assembly 1 is connected to the vehicle body and supports other components of the locking device.

[0039] Specifically, such as Figure 3 As shown, the mounting base assembly 1 includes a base 11 and, located on the base 11, a connecting rod assembly shaft 12, a connecting rod assembly shaft 13, a first connecting plate assembly shaft 14, and a stop 15. The connecting rod assembly shaft 12 is used to assemble with the connecting rod 21, the connecting rod assembly shaft 13 is used to assemble with the connecting rod 3, the first connecting plate assembly shaft 14 is used to assemble with the connecting plate 41, and the stop 15 is used to limit the rotation range of the connecting plate 41.

[0040] Among them, the first connecting rod assembly shaft 12, the third connecting rod assembly shaft 13, and the first connecting plate assembly shaft 14 can all be pins, and the stop 15 can be a screw or bolt, etc.

[0041] The base 11 includes a base body 111 and a first base portion 112, a second base portion 113, and a third base portion 114 connected to one end of the base body 111. The second base portion 113 is located between the first base portion 112 and the third base portion 114. The base body 111 and the second base portion 113 are located on the same plane. The first base portion 112 and the third base portion 114 are set at a certain angle to the base body 111 and the second base portion 113, preferably at 90 degrees. The connecting rod assembly shaft 12 and the stop 15 are located on the second base portion 113, and the connecting rod assembly shaft 13 and the first connecting plate assembly shaft 14 are located on the base body 111. This arrangement allows the base 11 to be installed with the vehicle body in two directions, improving installation stability. Furthermore, it reduces the volume of the base 11 and the space it occupies.

[0042] The axes of the connecting rod assembly shaft 12, the connecting rod assembly shaft 13, and the first connecting plate assembly shaft 14 are all perpendicular to the base body 111.

[0043] The connecting rod assembly shaft 12, the connecting rod assembly shaft 13, and the first connecting plate assembly shaft 14 are located at the three corners of the triangle, and the stop 15 is located inside the triangle, close to the line connecting the connecting rod assembly shaft 12 and the connecting rod assembly shaft 13.

[0044] For ease of installation, both the first base portion 112 and the third base portion 114 have openings for vehicle assembly, and the base body 111 is provided with mounting holes for vehicle assembly.

[0045] The first connecting plate assembly shaft 14 is located between the first connecting rod assembly 2 and the second connecting rod assembly 3.

[0046] like Figure 4As shown, the first connecting rod assembly 2 includes a connecting rod 21 and a connecting rod 2 assembly shaft 22 located on the connecting rod 21, a first assembly hole 23 of the connecting rod 21 and a second assembly hole 24 of the connecting rod 21. The connecting rod 2 assembly shaft 22 is located between the first assembly hole 23 of the connecting rod 21 and the second assembly hole 24 of the connecting rod 21. The first assembly hole 23 of the connecting rod 21 is rotatably assembled with the connecting rod 1 assembly shaft 12, and the second assembly hole 24 of the connecting rod 21 is rotatably assembled with the swing seat 6 through the first pin 51.

[0047] The first mounting hole 23 and the second mounting hole 24 of the first connecting rod are located at the two ends of the first connecting rod 21, and the mounting shaft 22 of the second connecting rod is located in the middle of the first connecting rod 21. The mounting shaft 22 of the second connecting rod is located on the surface of the second connecting rod 21 that is away from the mounting base.

[0048] The axis of the connecting rod assembly shaft 22 is perpendicular to the base body 111.

[0049] Among them, the assembly shaft 22 of the second connecting rod is used to assemble and rotate with the second connecting rod 31, and the assembly shaft 22 of the second connecting rod can be a pin.

[0050] like Figure 2 As shown, the connecting rod 3 8 includes a first mounting hole 81 and a second mounting hole 82, which are located at the two ends of the connecting rod 3 8.

[0051] The first mounting hole 81 of the connecting rod 3 is rotatably assembled with the mounting shaft 13 of the connecting rod 3; the second mounting hole 82 of the connecting rod 3 is rotatably assembled with the swing seat 6 through the second pin 52.

[0052] The swing seat 6 is connected to the mounting seat 1 via the first connecting rod assembly 2 and the third connecting rod 8. The swing seat 6 can swing in the direction of the line connecting the first connecting rod assembly shaft 12 and the third connecting rod assembly shaft 13.

[0053] During the swinging process of the swing seat 6, the connecting rod assembly shaft 12, the connecting rod assembly shaft 13, the first pin 51 and the second pin 52 are always located at the four corners of the parallelogram.

[0054] like Figure 5 As shown, the second connecting rod assembly 3 includes a second connecting rod 31, a second connecting plate assembly shaft 32 located on the second connecting rod 31, and a second connecting rod assembly hole 33. The second connecting rod assembly hole 33 is rotatably assembled with the second connecting rod assembly shaft 22.

[0055] The second connecting plate assembly shaft 32 and the connecting rod assembly hole 33 are located at the two ends of the connecting rod 31. The second connecting plate assembly shaft 32 is located on the side of the connecting rod 31 facing away from the base body 111, and the axis of the second connecting plate assembly shaft 32 is perpendicular to the base body 111. The connecting rod 31 is located between the first connecting rod assembly 2 and the second connecting rod assembly 3.

[0056] like Figure 6 As shown, the connecting plate assembly 4 includes a connecting plate 41, a drive shaft 42 located on the connecting plate 41, a first mounting hole 43 on the connecting plate, and a second mounting hole 44 on the connecting plate. The first mounting hole 43 on the connecting plate is rotatably assembled with the first connecting plate mounting shaft 14, and the second mounting hole 44 on the connecting plate is rotatably assembled with the second connecting plate mounting shaft 32. The drive shaft 42 is assembled with a drive mechanism, which is used to drive the drive shaft 42 to rotate clockwise or counterclockwise around the first connecting plate mounting shaft 14.

[0057] The connecting plate 41 includes a connecting plate body 411 and a limiting rod 412 located on the connecting plate body 411. The limiting rod 412 is used to contact the stop 15. The limiting rod 412 is located on a plane of the connecting plate body 411 and is located on one side of the connecting plate body 411.

[0058] like Figure 8 , 10 As shown, when the drive mechanism drives the drive shaft 42 to rotate clockwise around the first connecting plate assembly shaft 14 until the connecting plate 41 contacts the stop 15, the door leaf is in a locked state close to the base 11, and the second connecting plate assembly shaft 32 is lower than the line connecting the first connecting plate assembly shaft 14 and the second connecting rod assembly shaft 22, as shown. Figure 7 As shown, a stable triangular locking state is formed to achieve locking. At this time, the force in the direction of force on the door leaf, that is, the swing direction of the swing seat 6, causes the second connecting plate assembly shaft 32 to have a downward movement tendency, preventing the second connecting plate assembly shaft 32 from rotating upward to unlock, thus ensuring the stability of the locking state. Figure 9 , 11 As shown, the door can only be unlocked when the drive shaft 42 is driven counterclockwise around the first connecting plate assembly shaft 14 by the drive shaft drive mechanism, so that the door 9 is in an open state away from the base 11.

[0059] When the door leaf 9 is in the open state away from the base 11, the axis of the drive shaft 42 coincides with the axis of the connecting rod assembly shaft 22. That is, the triangle formed by the drive shaft 42, the second connecting plate assembly shaft 32, and the first connecting plate assembly shaft 14 is parallel to the three sides of the triangle formed by the connecting rod assembly shaft 22, the second connecting plate assembly shaft 32, and the first connecting plate assembly shaft 14. Therefore, in this position, the drive shaft 42 is limited and cannot continue to rotate counterclockwise. Using this position as the door leaf open position can ensure the stability of the door leaf open position.

[0060] Within the range of rotation of the drive shaft 42 around the first connecting plate assembly shaft 14, the distance between the first connecting plate assembly shaft 14 and the second connecting rod assembly shaft 22 is greater than the distance between the second connecting plate assembly shaft 32 and the second connecting rod assembly shaft 22.

[0061] The swing seat 6 includes a U-shaped part 61 and a roller assembly assembly part 62. The ends of the connecting rod 1 21 and the connecting rod 3 8 are located in the space of the U-shaped part 61 and are rotatably assembled with the U-shaped part 61. The roller assembly assembly part 62 is connected to the bottom wall of the U-shaped part 61, and the roller assembly 7 is located on the upper surface of the roller assembly assembly part 62.

[0062] After the locking device is assembled, connecting rod 1 21 and connecting rod 3 8 are located on the same plane, and the plane where connecting rod 2 31 is located is between the plane where connecting rod 1 21 and connecting rod 3 8 are located and the plane where connecting plate 41 is located.

[0063] Space needs to be reserved between the first connecting plate assembly shaft 14 and the second connecting rod assembly 3 and their movement between the third connecting rod 8 and the first connecting rod assembly 2. In order to reduce the space occupied by the locking device, the distance between the middle of the third connecting rod 8 and the first connecting rod 21 is greater than the distance between the end of the third connecting rod 8 and the first connecting rod 21. The first connecting plate assembly shaft 14 is located between the middle of the third connecting rod 8 and the first connecting rod 21. That is, the third connecting rod 8 is U-shaped.

[0064] When the drive mechanism drives the drive shaft 42 to rotate clockwise around the first connecting plate assembly shaft 14 until the connecting plate 41 contacts the stop 15, the door is in a locked state near the base 11. When the door is in the locked state, the second connecting plate assembly shaft 32 is lower than the line connecting the first connecting plate assembly shaft 14 and the second connecting rod assembly shaft 22. That is, the second connecting plate assembly shaft 32 is located below the line connecting the first connecting plate assembly shaft 14 and the second connecting rod assembly shaft 22. The stop 15 prevents the connecting plate assembly 4 from continuing to rotate clockwise, and the door remains in the locked state.

[0065] When the door is locked, the direction of force on the door causes the locking device to move in the opposite direction to when it is unlocked. That is, the direction of force on the door causes the connecting plate assembly 4 to have a tendency to rotate counterclockwise, but this tendency is blocked by the stop 15, thus achieving a good locking effect.

[0066] When the door is unlocked, the drive shaft drive mechanism drives the drive shaft 42 to rotate counterclockwise around the first connecting plate assembly shaft 14, which drives the second connecting rod assembly 3 and the first connecting rod assembly 2 to rotate, thereby causing the swing seat 6 to swing, so that the door opens. When the axis of the drive shaft 42 coincides with the axis of the second connecting rod assembly shaft 22, the drive shaft 42 can no longer rotate, and the door is in the fully open state.

[0067] This embodiment also proposes a rail vehicle, including a car body and a door on the car body. The rail vehicle includes the aforementioned door auxiliary locking device, wherein the base 11 is mounted on the car body, and the roller assembly 7 is assembled with the door 9.

[0068] This locking device works in conjunction with the door leaf guide rail, with the roller assembly 7 embedded within the door leaf guide rail. During the sliding action, the roller assembly 7 drives the door leaf to achieve the sliding action; during the sliding action, the rollers roll within the door leaf guide rail to achieve the sliding action of the door leaf.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A door auxiliary locking device for a rail vehicle, characterized in that, include: The mounting base consists of (1), a first link assembly (2), a second link assembly (3), a third link assembly (8), a connecting plate assembly (4), a swing seat (6), and a roller assembly (7) located on the swing seat (6), wherein the roller assembly (7) is assembled with the guide rail of the door leaf; The mounting base assembly (1) includes a base (11) and a connecting rod assembly shaft (12), a connecting rod assembly shaft (13), a first connecting plate assembly shaft (14) and a stop (15) located on the base (11). The first connecting plate assembly shaft (14) is located between the first connecting rod assembly (2) and the second connecting rod assembly (3). The first connecting rod assembly (2) includes a connecting rod (21) and a connecting rod assembly shaft (22), a first mounting hole (23) and a second mounting hole (24) of the connecting rod (21) located on the connecting rod (21). The connecting rod assembly shaft (22) is located between the first mounting hole (23) and the second mounting hole (24) of the connecting rod. The first mounting hole (23) of the connecting rod is rotatably assembled with the connecting rod assembly shaft (12), and the second mounting hole (24) of the connecting rod is rotatably assembled with the swing seat (6). The connecting rod three (8) includes a first mounting hole (81) and a second mounting hole (82). The first mounting hole (81) is rotatably mounted to the mounting shaft (13) of the connecting rod three; the second mounting hole (82) is rotatably mounted to the swing seat (6). The second connecting rod assembly (3) includes a second connecting rod (31), a second connecting plate assembly shaft (32) located on the second connecting rod (31), and a second connecting rod assembly hole (33), wherein the second connecting rod assembly hole (33) is rotatably assembled with the second connecting rod assembly shaft (22); The connecting plate assembly (4) includes a connecting plate (41), a drive shaft (42) located on the connecting plate (41), a first mounting hole (43) and a second mounting hole (44) of the connecting plate. The first mounting hole (43) of the connecting plate is rotatably assembled with the first connecting plate mounting shaft (14). The second mounting hole (44) of the connecting plate is rotatably assembled with the second connecting plate mounting shaft (32). The drive shaft (42) is assembled with a drive mechanism. The drive mechanism is used to drive the drive shaft (42) to rotate clockwise or counterclockwise around the first connecting plate mounting shaft (14). The drive mechanism drives the drive shaft (42) to rotate clockwise around the first connecting plate assembly shaft (14) until the connecting plate (41) contacts the stop (15). At this time, the door is in a locked state close to the base (11), and the second connecting plate assembly shaft (32) is lower than the line connecting the first connecting plate assembly shaft (14) and the second connecting rod assembly shaft (22). The drive shaft drive mechanism drives the drive shaft (42) to rotate counterclockwise around the first connecting plate assembly shaft (14) so ​​that the door is in an open state away from the base (11).

2. The auxiliary locking device for the door of a rail vehicle according to claim 1, characterized in that, When the door is in the open state away from the base (11), the axis of the drive shaft (42) coincides with the axis of the connecting rod assembly shaft (22).

3. The auxiliary locking device for the door of a rail vehicle according to claim 1, characterized in that, Within the range of rotation of the drive shaft (42) around the first connecting plate assembly shaft (14), the distance between the first connecting plate assembly shaft (14) and the second connecting rod assembly shaft (22) is greater than the distance between the second connecting plate assembly shaft (32) and the second connecting rod assembly shaft (22).

4. The auxiliary locking device for the door of a rail vehicle according to claim 1, characterized in that, The swing seat (6) includes a U-shaped part (61) and a roller assembly assembly part (62). The ends of the connecting rod one (21) and the connecting rod three (8) are located in the space of the U-shaped part (61) and are rotatably assembled with the U-shaped part (61).

5. The auxiliary locking device for the door of a rail vehicle according to claim 1, characterized in that, The connecting plate (41) includes a connecting plate body (411) and a limiting rod (412) located on the connecting plate body (411), the limiting rod (412) being used to contact the stop (15).

6. The auxiliary locking device for the door of a rail vehicle according to claim 1, characterized in that, The plane where the second connecting rod (31) is located is between the plane where the first connecting rod (21) and the third connecting rod are located and the plane where the connecting plate (41) is located.

7. The auxiliary locking device for the door of a rail vehicle according to claim 1, characterized in that, The base (11) includes a base body (111) and a first base portion (112), a second base portion (113) and a third base portion (114) connected to one end of the base body (111). The second base portion (113) is located between the first base portion (112) and the third base portion (114). The first base portion (112) and the third base portion (114) are set at a certain angle to the base body (111) and the second base portion (113). The connecting rod assembly shaft (12) and the stop (15) are located on the second base portion (113). The connecting rod assembly shaft (13) and the first connecting plate assembly shaft (14) are located on the base body (111).

8. The auxiliary locking device for the door of a rail vehicle according to claim 7, characterized in that, Both the first base portion (112) and the third base portion (114) have opening slots for vehicle assembly, and the base base (111) is provided with assembly holes for vehicle assembly.

9. The auxiliary locking device for the door of a rail vehicle according to claim 1, characterized in that, The distance between the middle part of the third link (8) and the first connecting rod (21) is greater than the distance between the end of the third link (8) and the first connecting rod (21). The first connecting plate assembly shaft (14) is located between the middle part of the third link (8) and the first connecting rod (21).

10. A rail vehicle, comprising a car body and doors located on the car body, characterized in that, The rail vehicle includes a door auxiliary locking device as described in any one of claims 1-9, the base (11) is mounted on the vehicle body, and the roller assembly (7) is assembled with the door.

Images