Rail transit vehicle bogie wheel set automatic adjusting device

Abstract

The utility model relates to the technical field of rail transit, in particular to an automatic adjusting device for a bogie wheel set of a rail transit vehicle. According to the technical scheme, the device comprises a fixing frame and supporting plates movably installed at the two ends of the fixing frame, and an automatic adjusting assembly and an anti-collision assembly are arranged on the fixing frame; the automatic adjusting assembly comprises two supporting frames movably installed at the bottom of the supporting plate, a shaft sleeve is fixedly installed at the bottom of each supporting frame, a fixing wheel is rotationally installed on the outer side of each shaft sleeve, fixing plates are fixedly installed on the front side and the rear side of each fixing frame, and thrust springs are fixedly connected between each fixing plate and the two supporting plates. The movable frame, the supporting wheels, the movable rods, the connecting frame, the fixing piles and the anti-collision frame are matched with one another, so that the angle of the fixing wheels can be automatically adjusted along a curve of a rail, automatic adjustment of a vehicle bogie wheel set is facilitated, the anti-collision effect of the anti-collision frame can be improved, and the situation that the anti-collision frame is damaged when collided is avoided.

Description

Technical Field

[0001] This utility model relates to the field of rail transit technology, specifically to an automatic adjustment device for the wheelsets of a rail transit vehicle bogie. Background Technology

[0002] Rail transit refers to a type of transportation vehicle or system that operates on specific tracks. Urban rail transit is defined as "a general term for rapid, high-capacity public transportation, typically powered by electricity and operating in a wheel-rail mode." Wheelsets are the parts of a locomotive or rolling stock that contact the rails, consisting of two wheels firmly mounted on the same axle. The function of wheelsets is to ensure the operation and steering of locomotives and rolling stock on the rails, bear all static and dynamic loads from the locomotive or rolling stock, transfer them to the rails, and transfer loads caused by track irregularities to various components of the locomotive or rolling stock. Rail vehicles utilize wheelsets during operation, requiring the use of automatic wheelset adjustment devices on the bogies of rail transit vehicles.

[0003] A search revealed a railway vehicle and its bogie with application publication number CN212423125U. The bogie includes an H-shaped frame and two pairs of wheelsets parallel and symmetrically arranged on both sides of the central crossbeam of the H-shaped frame. Each wheelet is connected to the H-shaped frame via an axle box rubber vibration damping device. The axle box rubber vibration damping device includes a mounting base connecting the H-shaped frame and the wheelsets, and axle box rubber nested around the periphery of the mounting base. The bogie provided by this utility model effectively reduces the turning radius of the railway vehicle.

[0004] The existing technology has the following problems:

[0005] Traditional vehicle bogie wheelsets are not easy to automatically adjust to the curves of the rails during operation, which can easily cause friction between the bogie wheelsets and the rails. At the same time, most anti-collision structures are fixed at the front, which is not conducive to buffering protection when the anti-collision frame is hit, resulting in poor anti-collision effect and easy damage to the anti-collision frame. Utility Model Content

[0006] The purpose of this invention is to provide an automatic adjustment device for the wheelsets of a rail transit vehicle bogie to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic adjustment device for bogie wheelsets of rail transit vehicles, comprising a fixed frame and support plates movably mounted at both ends of the fixed frame. The fixed frame is equipped with an automatic adjustment assembly and an anti-collision assembly. The automatic adjustment assembly includes two support frames movably mounted at the bottom of the support plates. A bushing is fixedly mounted at the bottom of each support frame, and a fixed wheel is rotatably mounted on the outer side of each bushing. Fixed plates are fixedly mounted on the front and rear sides of the fixed frame. A thrust spring is fixedly connected between each fixed plate and the two support plates. A movable frame is slidably installed at the bottom of the device, and support wheels are rotatably installed at both ends of the movable frame. A movable rod is movably connected between each bushing and the movable frame. The anti-collision assembly includes two connecting frames fixedly installed on the outside of a support plate. An anti-collision frame is movably connected to one side of each of the two connecting frames via a buffer spring. Two fixed posts are fixedly installed on one side of each anti-collision frame, and the two fixed posts pass through the two connecting frames respectively. The two buffer springs are located around the two fixed posts respectively. A damping sleeve is fixedly connected to the inside of each connecting frame, and each damping sleeve is located around the fixed post.

[0008] As the fixed wheels roll along the rails, when the vehicle reaches a curve, the rail on the inside of the curve pushes the support wheels inward, simultaneously moving the movable frame. This causes the other end of the movable frame to move another support wheel outward, ensuring the support wheels remain in contact with the inner sides of both rails. A movable rod allows one end of the movable frame to move two fixed wheels on one side of the fixed frame inward, separating the two fixed wheels on the other side. This allows the fixed wheels to automatically adjust their angle along the curve, facilitating automatic adjustment of the bogie wheelsets. The connecting frame supports and fixes the crash barrier, providing collision protection. The force of the buffer spring, combined with the friction of the fixed pile sliding along the connecting frame, creates a damping effect, buffering the crash barrier and improving its impact resistance, preventing damage upon impact. When the vehicle travels onto a straight rail, the thrust spring quickly resets the support plate, simultaneously resetting the fixed wheels.

[0009] Preferably, each of the support plates has a shaft fixedly installed at both ends, each shaft passes through a support plate, and each support plate is movably connected to a shaft. The shaft allows the support plate to be rotated.

[0010] Preferably, a rotating rod is fixedly installed between every two fixed wheels, and each rotating rod passes through two bushings and is rotatably connected to the bushings. The rotating rod can easily drive the fixed wheels to rotate.

[0011] Preferably, each of the fixed plates has a support block fixedly installed on both sides, and two fixed blocks are fixedly connected to the inner sides of the two support plates respectively. Each thrust spring is fixedly installed at both ends with a fixed block and a support block respectively. The support blocks and fixed blocks can support and fix the two ends of the thrust spring, making it easy for the thrust spring to return to the support plate.

[0012] Preferably, a mounting bracket is fixedly installed on the top of the fixed frame, and each end of the movable rod is movably connected to a bushing and the movable frame via a bearing seat. The mounting bracket facilitates the installation and fixing of the fixed frame to the bottom of the rail vehicle, and the bearing seat allows the ends of the movable rod to be rotated.

[0013] Preferably, a fixing spring is fixedly installed between the top of each support frame and the support plate, and one end of each support frame is movably connected to the support plate. Each pair of support frames is located at the front and rear of the fixing frame, respectively. The fixing springs provide support for the support frames and also act as shock absorbers, facilitating shock absorption support for the fixed wheels.

[0014] Preferably, a sliding sleeve is fixedly installed at the bottom of the fixed frame, the sliding sleeve is located on the periphery of the movable frame, and the movable frame and the sliding sleeve are slidably installed together. The sliding sleeve allows the movable frame to slide back and forth easily.

[0015] Preferably, a limiting plate is fixedly installed at one end of each fixed pile, and the two limiting plates are respectively located inside the two connecting frames. The limiting plates can limit the fixed pile and prevent it from separating from the connecting frame.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] By employing a movable frame, support wheels, movable rods, connecting frames, fixed posts, and a crash barrier, the fixed wheels, as they roll along the rails, push one end of the movable frame's support wheel inward at curves. This causes the other end of the movable frame to move another support wheel outward, ensuring the support wheel remains in contact with the inner sides of both rails. The movable rod allows one end of the movable frame to move two fixed wheels on one side of the fixed frame inward, separating the other two fixed wheels. This allows the fixed wheels to automatically adjust their angle along the curves, facilitating automatic adjustment of the bogie wheelsets. The connecting frame supports and secures the crash barrier, which provides collision protection. The damping effect, created by the buffer springs and the friction of the fixed posts sliding along the connecting frame, cushions the impact and improves the crash barrier's effectiveness, preventing damage upon impact. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side view sectional view of the present invention.

[0020] Figure 3 This is a side view of the support plate structure of this utility model;

[0021] Figure 4 This is a side view sectional view of the present invention.

[0022] Figure 5 This is a cross-sectional structural diagram of the connecting frame of this utility model.

[0023] In the diagram: 1. Fixed frame; 2. Shaft; 3. Support plate; 4. Support frame; 5. Rotating rod; 6. Fixed wheel; 7. Fixed block; 8. Fixed plate; 9. Support block; 10. Thrust spring; 11. Mounting frame; 12. Movable frame; 13. Support wheel; 14. Movable rod; 15. Connecting frame; 16. Fixed pile; 17. Anti-collision frame; 18. Buffer spring; 19. Bushing; 20. Fixed spring; 21. Shaft seat; 22. Sliding sleeve; 23. Damping sleeve; 24. Limiting plate. Detailed Implementation

[0024] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0025] This utility model provides, for example Figure 1-5The diagram illustrates an automatic wheelset adjustment device for a rail transit vehicle bogie, comprising a fixed frame 1 and support plates 3 movably mounted at both ends of the fixed frame 1. The fixed frame 1 is equipped with an automatic adjustment assembly and an anti-collision assembly. The automatic adjustment assembly includes two support frames 4 movably mounted at the bottom of the support plates 3. Each support frame 4 has a bushing 19 fixedly mounted at its bottom, and a fixed wheel 6 rotatably mounted on the outer side of each bushing 19. Fixed plates 8 are fixedly mounted on the front and rear sides of the fixed frame 1. A thrust spring 10 is fixedly connected between each fixed plate 8 and the two support plates 3. A movable frame 12 is slidably mounted at the bottom of the fixed frame 1. Both ends are rotatably mounted with support wheels 13, and each bushing 19 is movably connected to a movable rod 14 between it and the movable frame 12; the anti-collision assembly includes two connecting frames 15 fixedly mounted on the outside of a support plate 3, and one side of each of the two connecting frames 15 is movably connected to an anti-collision frame 17 via a buffer spring 18. Two fixed posts 16 are fixedly mounted on one side of the anti-collision frame 17, and the two fixed posts 16 pass through the two connecting frames 15 respectively. The two buffer springs 18 are located around the two fixed posts 16 respectively. A damping sleeve 23 is fixedly connected to the inside of each connecting frame 15, and each damping sleeve 23 is located around the fixed post 16.

[0026] Each support plate 3 has a shaft 2 fixedly installed at both ends, each shaft 2 passes through a support plate 3, and each support plate 3 is movably connected to a shaft 2;

[0027] A rotating rod 5 is fixedly installed between every two fixed wheels 6. Each rotating rod 5 passes through two bushings 19 and is rotatably connected to the bushings 19.

[0028] Each fixed plate 8 has a support block 9 fixedly installed on both sides. The inner sides of the two support plates 3 are respectively fixedly connected to two fixed blocks 7. The two ends of each thrust spring 10 are respectively fixedly installed to a fixed block 7 and a support block 9.

[0029] A mounting bracket 11 is fixedly installed on the top of the fixed frame 1, and the two ends of each movable rod 14 are movably connected to a bushing 19 and the movable frame 12 through a bearing 21.

[0030] A fixing spring 20 is fixedly installed between the top of each support frame 4 and the support plate 3. One end of each support frame 4 is movably connected to the support plate 3. Each pair of support frames 4 is located on the front and rear sides of the fixed frame 1, respectively.

[0031] A sliding sleeve 22 is fixedly installed at the bottom of the fixed frame 1. The sliding sleeve 22 is located on the periphery of the movable frame 12, and the movable frame 12 and the sliding sleeve 22 are slidably installed together.

[0032] Each fixed pile 16 has a limiting plate 24 fixedly installed at one end, and the two limiting plates 24 are located on the inner side of the two connecting frames 15 respectively.

[0033] The working principle of the automatic adjustment device for the bogie wheelset of the rail transit vehicle based on the embodiment is as follows: the mounting frame 11 facilitates the installation and fixation of the fixed frame 1. By placing the fixed wheel 6 on the rail, the support wheel 13 supports the inner side of the rail. When the fixed wheel 6 rolls along the rail, at the curve of the rail, the rail on the inner side of the curve pushes the support wheel 13 to move inward, which simultaneously drives the movable frame 12 to move. The other end of the movable frame 12 drives another support wheel 13 to move outward, so that the support wheel 13 can always be in contact with the inner side of the two rails.

[0034] The movable rod 14 can drive one end of the movable frame 12 to move the two fixed wheels 6 on one side of the fixed frame 1 inward, so that the two fixed wheels 6 on the other side of the fixed frame 1 can move separately. This allows the fixed wheels 6 to automatically adjust their angle along the curve of the rail, which is convenient for automatic adjustment of the bogie wheelsets of the vehicle.

[0035] The connecting frame 15 can support and fix the anti-collision frame 17, and the anti-collision frame 17 can provide anti-collision protection. The force of the buffer spring 18, together with the friction of the fixed pile 16 sliding along the connecting frame 15, can form a damping effect, which can facilitate the buffer protection of the anti-collision frame 17, improve the anti-collision effect of the anti-collision frame 17, and prevent the anti-collision frame 17 from being damaged when it is hit by a collision. When traveling on a straight rail, the force of the thrust spring 10 can quickly drive the support plate 3 to reset, and simultaneously drive the fixed wheel 6 to reset.

[0036] The above specific embodiments are merely several preferred embodiments of this utility model. Based on the technical solution of this utility model and the relevant teachings of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

Claims

1. An automatic adjustment device for bogie wheelsets of a rail transit vehicle, comprising a fixed frame (1) and support plates (3) movably mounted at both ends of the fixed frame (1), characterized in that: The fixing frame (1) is equipped with an automatic adjustment component and an anti-collision component; The automatic adjustment assembly includes two support frames (4) movably mounted on the bottom of the support plate (3). Each support frame (4) has a bushing (19) fixedly mounted on its bottom. Each bushing (19) has a fixed wheel (6) rotatably mounted on its outer side. The front and rear sides of the fixed frame (1) are fixedly mounted with fixed plates (8). Each fixed plate (8) is fixedly connected to the two support plates (3) with a thrust spring (10). The bottom of the fixed frame (1) is slidably mounted with a movable frame (12). Both ends of the movable frame (12) are rotatably mounted with support wheels (13). Each bushing (19) is movably connected to the movable frame (12) with a movable rod (14). The anti-collision assembly includes two connecting frames (15) fixedly installed on the outside of a support plate (3). One side of each of the two connecting frames (15) is movably connected to an anti-collision frame (17) via a buffer spring (18). Two fixed posts (16) are fixedly installed on one side of each anti-collision frame (17). The two fixed posts (16) pass through the two connecting frames (15) respectively. The two buffer springs (18) are located on the periphery of the two fixed posts (16) respectively. A damping sleeve (23) is fixedly connected to the inner side of each connecting frame (15). Each damping sleeve (23) is located on the periphery of a fixed post (16).

2. The automatic adjustment device for bogie wheelsets of a rail transit vehicle according to claim 1, characterized in that: Each of the support plates (3) has a shaft (2) fixedly installed at both ends. Each shaft (2) passes through a support plate (3) and each support plate (3) is movably connected to a shaft (2).

3. The automatic adjustment device for bogie wheelsets of a rail transit vehicle according to claim 1, characterized in that: A rotating rod (5) is fixedly installed between every two fixed wheels (6), and each rotating rod (5) passes through two bushings (19) and is rotatably connected to the bushings (19).

4. The automatic adjustment device for bogie wheelsets of a rail transit vehicle according to claim 1, characterized in that: Each of the fixed plates (8) has a support block (9) fixedly installed on both sides. The inner sides of the two support plates (3) are respectively fixedly connected to two fixed blocks (7). The two ends of each thrust spring (10) are respectively fixedly installed with a fixed block (7) and a support block (9).

5. The automatic adjustment device for bogie wheelsets of a rail transit vehicle according to claim 1, characterized in that: The top of the fixed frame (1) is fixedly mounted with a mounting bracket (11), and the two ends of each movable rod (14) are movably connected to a bushing (19) and the movable frame (12) through a bearing seat (21).

6. The automatic adjustment device for bogie wheelsets of a rail transit vehicle according to claim 1, characterized in that: A fixing spring (20) is fixedly installed between the top of each support frame (4) and the support plate (3). One end of each support frame (4) is movably connected to the support plate (3). Each pair of support frames (4) is located on the front and rear sides of the fixing frame (1), respectively.

7. The automatic adjustment device for bogie wheelsets of a rail transit vehicle according to claim 1, characterized in that: A sliding sleeve (22) is fixedly installed at the bottom of the fixed frame (1). The sliding sleeve (22) is located on the periphery of the movable frame (12). The movable frame (12) and the sliding sleeve (22) are slidably installed together.

8. The automatic adjustment device for bogie wheelsets of a rail transit vehicle according to claim 1, characterized in that: Each of the fixed piles (16) has a limiting plate (24) fixedly installed at one end, and the two limiting plates (24) are located on the inner side of the two connecting frames (15).

Images