Climbing track ladder

By installing a double-headed motor-driven lead screw and a limiting structure on the elevated rail ladder car, the problem of the existing ladder car requiring manual fixing and instability is solved, achieving stable positioning on the rail and improving safety and maintenance efficiency.

CN224496334UActive Publication Date: 2026-07-14CHENGDU YUNXIN MECHANICAL EQUIP MFG CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGDU YUNXIN MECHANICAL EQUIP MFG CO LTD
Filing Date
2025-06-25
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The existing elevated rail ladder vehicles lack stabilization mechanisms after being moved to the maintenance position, requiring manual assistance with auxiliary tools for fixation. This process is cumbersome, and stability is difficult to guarantee. They are also susceptible to train vibrations and wind, posing safety hazards and reducing maintenance efficiency and quality.

Method used

A ladder truck with a base plate, side fixing plate and dual-head motor was designed. The dual-head motor drives the lead screw and connecting plate, and the pressure plate squeezes against the side of the rail to achieve stability. Combined with the limiting structure of guide rod and spring, the ladder truck is stably positioned on the rail.

Benefits of technology

It achieves stable positioning of the elevated rail ladder car on the rails, simplifies the fixing operation, improves safety and maintenance efficiency, and avoids the risk of ladder car shaking and overturning.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224496334U_ABST
    Figure CN224496334U_ABST
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Abstract

The utility model relates to the technical field of railway power grid maintenance, disclose a kind of climbing track ladder car, including base plate, two pivot are symmetrically arranged in the bottom end of base plate, the both ends of pivot are rotatably provided with gyro wheel, the both sides of base plate are symmetrically fixedly connected with side fixed plate, the top of side fixed plate is fixedly connected with double-head motor, the output end of double-head motor is drivingly connected with screw rod, the outside of screw rod is threadedly connected with threaded sleeve, the bottom of threaded sleeve is fixedly connected with connecting rod, the utility model is fixedly connected with side fixed plate in the both sides of base plate, the top of side fixed plate is fixedly connected with double-head motor, the output end of double-head motor is provided with screw rod, threaded sleeve and connecting plate, the side of connecting plate is provided with pressing plate, so that when base plate is positioned and stabilized when moving on rail, double-head motor can drive connecting plate and pressing plate to move and extrude to the side of rail, so that the position of base plate is effectively stabilized.
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Description

Technical Field

[0001] This utility model relates to the technical field of railway power grid maintenance, and in particular to a ladder vehicle for climbing rails. Background Technology

[0002] In railway power grid maintenance, elevated rail ladders play a crucial role. These ladders are specifically designed for railway power grid maintenance scenarios and are typically composed of a high-strength frame and support structure to ensure stability during operation. The wheels of their traveling mechanism precisely fit the railway track, and some are also equipped with a power drive system, enabling them to move flexibly forward and backward along the track and quickly reach the maintenance location.

[0003] When existing elevated rail ladders are in use, they lack a stabilization mechanism after being moved to the maintenance position. They require manual assistance with tools such as wooden blocks and wedges for temporary fixation. However, manual fixation is not only cumbersome and time-consuming, but also difficult to guarantee stability. In the complex railway operation environment, the ladders are prone to shaking or even overturning due to factors such as vibrations from trains and wind, which seriously threatens the lives of maintenance personnel and reduces the efficiency and quality of maintenance work.

[0004] Therefore, it is necessary to invent a ladder truck for climbing to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an elevated track ladder vehicle to solve the problem mentioned in the background art that, when existing elevated track ladder vehicles are used, they do not have their own stabilization mechanism after being moved to the maintenance position. They need to be temporarily fixed manually with the help of auxiliary tools such as wooden blocks and wedges. However, the manual fixing method is not only cumbersome and time-consuming, but also difficult to guarantee stability. In the complex railway operation environment, the ladder vehicle is prone to shaking or even overturning due to factors such as vibration generated by train movement and wind force, which seriously threatens the life safety of maintenance personnel and reduces the efficiency and quality of maintenance operations.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a climbing rail ladder vehicle, including a base plate, two rotating shafts symmetrically arranged at the bottom end of the base plate, rollers rotatably arranged at both ends of the rotating shafts, side fixing plates symmetrically fixedly connected to both sides of the base plate, a double-head motor fixedly connected to the top end of the side fixing plates, a lead screw drivingly connected to the output end of the double-head motor, and a threaded sleeve threadedly connected to the outer side of the lead screw;

[0007] The bottom end of the threaded sleeve is fixedly connected to a connecting rod, the other end of the connecting rod is fixedly connected to a connecting plate, and a pressure plate is provided on one side of the connecting plate.

[0008] As a preferred embodiment, the front end of the pressure plate is provided with an anti-slip rubber pad, and the rear end of the pressure plate is symmetrically and fixedly connected with guide rods. The guide rods are slidably connected to the inner side of the connecting plate, and the end of the guide rod is fixedly connected with a limit ring. The limit ring is located on the side of the connecting plate away from the pressure plate, and a spring is provided on the outer side of the guide rod.

[0009] As a preferred embodiment, the top of the side fixing plate is symmetrically provided with a sliding groove, the connecting rod is slidably connected to the inner side of the sliding groove, the two ends of the side fixing plate are symmetrically fixedly connected with limit plates, and the lead screw is rotatably disposed on the inner side of the limit plate.

[0010] As a preferred embodiment, dust covers are provided on both sides of the dual-head motor, and the dust covers are fixedly connected to the top of the side fixing plate.

[0011] As a preferred embodiment, a power source is fixedly connected to the top of the substrate, and the dual-head motor is electrically connected to the power source via wires.

[0012] As a preferred embodiment, a ladder is provided at the top of the substrate, a platform is provided at the top of the ladder, and mounting rods are fixedly connected to the four corners of the top of the substrate and the bottom of the platform. Slots are provided on the inner side of the mounting rods, and insertion rods corresponding to the slots are provided at the top and bottom of the ladder.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] 1. This utility model has side fixing plates fixedly connected to both sides of the substrate. A double-head motor is fixedly connected to the top of the side fixing plates. The output end of the double-head motor is provided with a lead screw, a threaded sleeve and a connecting plate. A pressure plate is provided on one side of the connecting plate. When the substrate needs to be limited and stabilized when it moves on the rail, the double-head motor can drive the connecting plate and the pressure plate to move and press against the side of the rail, thereby effectively stabilizing the position of the substrate.

[0015] 2. This utility model sets up a base plate and a platform. The four corners at the top of the base plate and the four corners at the bottom of the platform are fixedly connected to the mounting rods. The inner side of the mounting rods is provided with slots. The upper and lower ends of the platform are provided with plug rods corresponding to the slots. Thus, when assembly is required, it can be quickly completed and fixed. When placed alone, it can effectively save space. When it is needed, it can also be quickly assembled and used. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the substrate structure in this utility model;

[0018] Figure 3This is a schematic diagram of the structure of the side fixing plate in this utility model;

[0019] Figure 4 This is a schematic diagram of the lead screw in this utility model;

[0020] Figure 5 This is a schematic diagram of the connecting plate and pressure plate in this utility model;

[0021] Figure 6 This is a schematic diagram of the guide rod in this utility model.

[0022] In the picture:

[0023] 1. Base plate; 11. Ladder; 12. Platform; 13. Mounting rod; 131. Slot; 14. Power supply; 15. Shaft; 16. Side fixing plate; 17. Roller;

[0024] 2. Dual-head motor; 21. Dust cover; 22. Lead screw; 23. Threaded sleeve; 24. Limiting plate; 25. Slide groove; 26. Connecting rod; 27. Connecting plate; 28. Pressure plate; 281. Anti-slip pad; 29. ​​Guide rod; 291. Spring; 292. Limiting ring. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see the appendix Figure 1 - Appendix Figure 5 A type of elevated rail ladder vehicle includes a base plate 1. Two rotating shafts 15 are symmetrically arranged at the bottom end of the base plate 1. Rollers 17 are rotatably arranged at both ends of the rotating shafts 15. Side fixing plates 16 are symmetrically fixedly connected to both sides of the base plate 1. A double-head motor 2 is fixedly connected to the top end of the side fixing plate 16. A lead screw 22 is driven to the output end of the double-head motor 2. A threaded sleeve 23 is threadedly connected to the outer side of the lead screw 22.

[0027] A connecting rod 26 is fixedly connected to the bottom end of the threaded sleeve 23, and a connecting plate 27 is fixedly connected to the other end of the connecting rod 26. A pressure plate 28 is provided on one side of the connecting plate 27.

[0028] Specifically, side fixing plates 16 are fixedly connected to both sides of the base plate 1. A double-headed motor 2 is fixedly connected to the top of the side fixing plates 16. The output end of the double-headed motor 2 is provided with a lead screw 22, a threaded sleeve 23 and a connecting plate 27. A pressure plate 28 is provided on one side of the connecting plate 27. When the base plate 1 needs to be limited and stabilized when it moves on the rail, the double-headed motor 2 can drive the connecting plate 27 and the pressure plate 28 to move and press against the side of the rail, thereby effectively stabilizing the position of the base plate 1.

[0029] Please see the appendix Figure 5 and Figure 6 The front end of the pressure plate 28 is provided with an anti-slip rubber pad 281, and the rear end of the pressure plate 28 is symmetrically and fixedly connected with a guide rod 29. The guide rod 29 is slidably connected to the inner side of the connecting plate 27, and the end of the guide rod 29 is fixedly connected with a limit ring 292. The limit ring 292 is located on the side of the connecting plate 27 away from the pressure plate 28, and the outer side of the guide rod 29 is provided with a spring 291.

[0030] Specifically, by setting anti-slip pads 281, the friction between the guide rod and the rail can be effectively increased. A guide rod 29 is fixedly connected to the rear end of the pressure plate 28. A corresponding sliding hole is provided on the connecting plate 27, allowing the guide rod 29 to slide inside the connecting plate 27. A limit ring 292 is fixedly connected to the end of the guide rod 29, located on the side of the connecting plate 27 near the connecting rod 26. A spring 291 is located on the outer side of the guide rod 29. Spring 291 is disposed between connecting plate 27 and pressure plate 28. In actual use, the connecting rod 26 moves, causing connecting plate 27 and pressure plate 28 to move. When pressure plate 28 moves close to the side of the rail, pressure plate 28 is squeezed, causing pressure plate 28 to move closer to connecting plate 27. Guide rod 29 slides within connecting plate 27, and spring 291 begins to contract. Under the reaction force of spring 291, pressure plate 28 can fit more tightly to the side of the rail, thereby effectively limiting the position of base plate 1.

[0031] Please see the appendix Figure 4 The top of the side fixing plate 16 is symmetrically provided with a sliding groove 25, the connecting rod 26 is slidably connected to the inner side of the sliding groove 25, the two ends of the side fixing plate 16 are symmetrically fixedly connected with a limiting plate 24, and the lead screw 22 is rotatably set inside the limiting plate 24.

[0032] Specifically, by setting the slide groove 25, the connecting rod 26 can slide inside the slide groove 25. The movement of the threaded sleeve 23 drives the connecting rod 26 to move, so that the connecting rod 26 slides inside the slide groove 25. By setting the limiting plate 24, the end of the lead screw 22 is rotatably set inside the limiting plate 24, thereby effectively improving the stability of the rotation of the lead screw 22.

[0033] Please see the appendix Figure 3Dust covers 21 are provided on both sides of the dual-head motor 2, and the dust covers 21 are fixedly connected to the top of the side fixing plate 16.

[0034] Specifically, by providing dust covers 21 on both sides of the dual-head motor 2, the dust covers 21 cover the outside of the lead screw 22, which can effectively prevent dust from the lead screw 22. At the same time, the dust covers 21 are fixedly connected to the top of the side fixing plate 16.

[0035] Please see the appendix Figure 2 A power supply 14 is fixedly connected to the top of the substrate 1, and the dual-head motor 2 is electrically connected to the power supply 14 through wires.

[0036] Specifically, by setting up power supply 14, the dual-head motor 2 is electrically connected to power supply 14 through wires, so that power supply 14 can conveniently supply power to the dual-head motor 2.

[0037] Please see the appendix Figure 1 and Figure 2 A ladder 11 is provided at the top of the substrate 1, and a platform 12 is provided at the top of the ladder 11. Mounting rods 13 are fixedly connected to the four corners of the top of the substrate 1 and the bottom of the platform 12. Slots 131 are provided on the inner side of the mounting rods 13. Inserts corresponding to slots 131 are provided at the top and bottom of the ladder 11.

[0038] Specifically, slots 131 are fixedly connected to the four corners of the top of the base plate 1, and a corresponding insertion rod is provided at the bottom of the ladder 11. This facilitates the insertion of the insertion rod into the inside of the mounting rod 13 for insertion and positioning. At the same time, threaded holes are provided on the side of the mounting rod 13 and at the corresponding position of the insertion rod, so that the insertion rod can be fixed to the inside of the mounting rod 13 with bolts. The bottom of the platform 12 is also provided with a mounting rod 13, and the top of the ladder 11 is also provided with an insertion rod. This facilitates the alignment of the mounting rod 13 at the bottom of the platform 12 with the insertion rod at the top of the ladder 11, and the platform 12 can be fixed to the top of the ladder 11 with bolts. This allows for quick assembly and fixation when assembly is required, effectively saving space when placed alone, and quick assembly and use when needed.

[0039] The working principle of this utility model is as follows: In specific use, the base plate 1 can be moved on the rail by the roller 17. After the base plate 1 reaches the position where the power grid needs to be inspected, the base plate 1 stops moving. At this time, the double-head motor 2 is started to drive the lead screw 22 to rotate. The lead screw 22 is threadedly connected to the threaded sleeve 23, thereby driving the threaded sleeve 23 to move. The threaded sleeve 23 is fixedly connected to the connecting rod 26, thereby driving the connecting rod 26 to move. The connecting rod 26 is fixedly connected to the connecting plate 27, thereby driving the connecting plate 27 and the pressure plate 28 to move.

[0040] The connecting plates 27 on both sides are respectively set on the inner edge of the two rails. When the pressure plate 28 moves close to the side of the rail, the pressure plate 28 is squeezed, causing the pressure plate 28 to move closer to the connecting plate 27. The guide rod 29 slides in the connecting plate 27, and the spring 291 begins to contract. Under the reaction force of the spring 291, the pressure plate 28 can be pressed more tightly to the side of the rail, thereby effectively limiting the position of the base plate 1, so that the base plate 1 is stably set between the two rails.

[0041] Workers can then climb onto platform 12 using ladder 11 to perform their work.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model 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. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ladder truck with elevated track, comprising a base plate (1), wherein two rotating shafts (15) are symmetrically arranged at the bottom end of the base plate (1), and rollers (17) are rotatably arranged at both ends of each rotating shaft (15), characterized in that: The base plate (1) is symmetrically fixedly connected to two sides of the base plate (1), and a double-head motor (2) is fixedly connected to the top of the side fixing plate (16). The output end of the double-head motor (2) is connected to a lead screw (22), and a threaded sleeve (23) is threadedly connected to the outside of the lead screw (22). The bottom end of the threaded sleeve (23) is fixedly connected to a connecting rod (26), and the other end of the connecting rod (26) is fixedly connected to a connecting plate (27). A pressure plate (28) is provided on one side of the connecting plate (27).

2. The aerial ladder vehicle according to claim 1, characterized in that: The front end of the pressure plate (28) is provided with an anti-slip rubber pad (281), and the rear end of the pressure plate (28) is symmetrically fixedly connected with a guide rod (29). The guide rod (29) is slidably connected to the inner side of the connecting plate (27). The end of the guide rod (29) is fixedly connected with a limit ring (292). The limit ring (292) is located on the side of the connecting plate (27) away from the pressure plate (28). The outer side of the guide rod (29) is provided with a spring (291).

3. The aerial ladder vehicle according to claim 2, characterized in that: The top of the side fixing plate (16) is symmetrically provided with a sliding groove (25), the connecting rod (26) is slidably connected to the inner side of the sliding groove (25), the two ends of the side fixing plate (16) are symmetrically fixedly connected with a limiting plate (24), and the lead screw (22) is rotatably set inside the limiting plate (24).

4. The aerial ladder vehicle according to claim 3, characterized in that: Dust covers (21) are provided on both sides of the dual-head motor (2), and the dust covers (21) are fixedly connected to the top of the side fixing plate (16).

5. The aerial ladder vehicle according to claim 4, characterized in that: The top of the substrate (1) is fixedly connected to a power source (14), and the dual-head motor (2) is electrically connected to the power source (14) through wires.

6. The elevated ladder vehicle according to claim 5, characterized in that: The top of the substrate (1) is provided with a ladder (11), the top of the ladder (11) is provided with a platform (12), and the four corners of the top of the substrate (1) and the bottom of the platform (12) are fixedly connected with mounting rods (13). The inner side of the mounting rod (13) is provided with a slot (131), and the top and bottom of the ladder (11) are provided with a plug corresponding to the slot (131).