Mobile trolley device for lifting and carrying heavy objects on subway train maintenance road

Abstract

The utility model relates to a moving trolley device for lifting and carrying weights on a subway train maintenance track, which comprises a door beam frame, a lifting module and a weight bearing module. Wherein the lifting module is fixed on one side of the door beam frame through a winch mounting plate, and the weight bearing module is arranged on the other side of the door beam frame. A fixed pulley of the lifting module is mounted at the top of the door beam frame and connected with a steel wire rope reel and a winch turbine mounted on a winch mounting plate through one end of a steel wire rope; the weight bearing module comprises an L-shaped fork frame and a sliding shovel plate, pulleys are arranged on the sliding shovel plate, and the sliding shovel plate is embedded into pulley groove rails on the left side and the right side of the L-shaped fork frame through the pulleys. Compared with the prior art, the utility model has the advantages of flexibility, safety, strong applicability and the like.

Description

Technical Field

[0001] This utility model relates to the field of subway maintenance equipment, and in particular to a mobile trolley device for lifting and transporting heavy objects on subway train maintenance tracks. Background Technology

[0002] Train maintenance is a crucial aspect of the daily operation and maintenance of subway systems. To ensure safe and efficient train operation, subway trains require regular and detailed inspections and repairs. This process often involves maintenance personnel entering the underside of the train to disassemble, inspect, and replace electrical boxes, critical mechanical components, and various testing equipment. However, these working environments are often challenging. Subway trains typically park on specially designed maintenance tracks, usually equipped with maintenance pits to facilitate access to the train's underside. However, the limited space in these pits, often containing obstacles and limitations, makes maintenance work exceptionally difficult. Especially for heavy components such as electrical boxes and large mechanical parts, manual handling is not only time-consuming and labor-intensive but also poses significant safety risks.

[0003] Under current technological conditions, maintenance personnel typically rely on traditional handling tools, such as manual forklifts and pulley systems, to move heavy objects. However, these tools often fall short of their full potential in the confined and complex environment of subway maintenance pits. While manual forklifts offer some lifting capacity, their operation is limited in confined spaces, and precise control of heavy objects' movement is difficult. Pulley systems, although reducing manual labor, are complex to operate and require additional space for installation and securing. Furthermore, subway maintenance work is extremely time-sensitive. Any delay could lead to train service disruptions, impacting passenger travel experiences. Therefore, improving maintenance efficiency by using equipment that can operate flexibly in confined spaces and move heavy objects quickly and stably, while ensuring safety, has become a crucial technical challenge. Utility Model Content

[0004] The purpose of this utility model is to overcome the defects of the existing technology and provide a mobile trolley device for lifting and transporting heavy objects on subway train maintenance tracks. The heavy object module is driven by a winch turbine and a winch worm gear, which allows it to move up and down flexibly. At the same time, the self-locking function ensures the safety of the device.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] According to one aspect of the present invention, a mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track is provided, comprising a gantry frame, a lifting module, and a load-bearing module.

[0007] The lifting module is fixed to one side of the gantry frame via a winch mounting plate, while the load-bearing module is located on the other side of the gantry frame.

[0008] The fixed pulley of the lifting module is installed on the top of the gantry frame, and is connected to the wire rope drum and winch turbine installed on the winch mounting plate by one end of the wire rope; the load-bearing module includes an L-shaped fork and a sliding shovel plate, the sliding shovel plate is placed on the L-shaped fork, and the left and right sides of the L-shaped fork are provided with pulley groove tracks.

[0009] Furthermore, in the lifting module, the wire rope is wound or released through a wire rope reel.

[0010] Furthermore, in the lifting module, the winch turbine meshes with the winch worm gear.

[0011] Furthermore, the winch handle is connected to the winch worm gear.

[0012] Furthermore, the other end of the steel wire rope is connected to the load-bearing module mounting plate in the load-bearing module, pulling the load-bearing module up and down.

[0013] Furthermore, each side of the load-bearing module mounting plate is provided with two rollers, which are embedded in the side supports of the door beam frame.

[0014] Furthermore, the L-shaped fork is fixed to the load-bearing module mounting plate via a strip-shaped load-bearing module mounting block.

[0015] Furthermore, the pulleys on the sliding shovel plate are embedded in the pulley groove track of the L-shaped fork, and the pulley mounting plates on both sides of the sliding shovel plate are equipped with pulleys through the pulley mounting shaft. The connection between the pulley mounting plate and the sliding shovel plate is rounded.

[0016] Furthermore, the portal frame is equipped with a front wheel on the lifting module side and a steering wheel with brake on the load-bearing module side.

[0017] Furthermore, the door beam frame is also equipped with a cylindrical handrail and an auxiliary tool table.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) Increased operating range and flexibility: The L-shaped fork and the sliding shovel together form a planar structure for placing heavy objects, ensuring that the goods can be stably carried; the sliding shovel is equipped with rollers inside, which can slide back and forth, increasing the operating range and allowing the trolley to adapt more flexibly to the needs of different positions and spaces; at the same time, the rollers on both sides of the L-shaped fork can slide up and down on the two side columns of the gantry frame, further improving the flexibility and efficiency of handling.

[0020] (2) Improved ease of use while ensuring safety: The winch, wire rope and fixed pulley are responsible for lifting and lowering the stacker platform. By manually cranking the winch handle, the lifting and lowering of heavy objects can be easily achieved by using the cooperation of the wire rope and fixed pulley. It is not only easy to operate, but also has a strong lifting capacity, which can meet the needs of heavy object handling during subway train maintenance. At the same time, the self-locking function of the winch turbine and winch worm gear in the lifting module when there is no external force on the winch handle also improves the safety of operation and prevents the risk of the load object sliding down due to the sudden loss of power of the winch.

[0021] (3) Compact structure and strong applicability: The front wheel and steering wheel with brake at the bottom of the trolley allow the trolley to turn flexibly. The small structure makes it easy to operate in a narrow space. The steering wheel with brake ensures that the trolley can stop quickly and stably when needed, preventing safety risks caused by accidental movement, improving the flexibility and operability of the trolley, and ensuring stability and safety during operation. It is more suitable for lifting and transporting heavy objects in subway maintenance pits. Attached Figure Description

[0022] Figure 1 A frontal structural view of a mobile trolley device used for lifting and transporting heavy objects on subway train maintenance tracks;

[0023] Figure 2 This is a reverse overall structural diagram of a mobile trolley device used for lifting and transporting heavy objects on subway train maintenance tracks.

[0024] Figure 3 This is a structural diagram of the vertically moving part of the load-bearing module;

[0025] Figure 4 This is a structural diagram of the forward and backward moving part of the load-bearing module;

[0026] Figure 5 This is a structural diagram of a winch.

[0027] Figure 6 This is a schematic diagram illustrating the practical application of a mobile trolley device used for lifting and transporting heavy objects on subway train maintenance tracks.

[0028] The markings in the diagram are as follows: 1. Door beam frame; 11. Winch mounting plate; 12. Handrail; 13. Auxiliary tool table; 2. Lifting module; 21. Fixed pulley; 22. Steel wire rope; 23. Steel wire rope drum; 24. Winch turbine; 25. Winch worm gear; 26. Winch handle; 3. Load-bearing module; 31. L-shaped fork; 32. Sliding shovel; 33. Pulley mounting shaft; 34. Load-bearing module mounting plate; 35. Roller; 36. Load-bearing module mounting block; 37. Pulley; 38. Pulley groove track; 4. Front wheel; 5. Steering wheel with brake. Detailed Implementation

[0029] 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, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present utility model.

[0030] like Figure 1 As shown, a mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track includes a gantry frame 1, a lifting module 2, and a load-bearing module 3. The lifting module 2 is fixed to one side of the gantry frame 1 via a winch mounting plate 11. Figure 2 As shown, the load-bearing module 3 is located on the other side of the door beam frame 1.

[0031] The fixed pulley 21 of the lifting module 2 is installed on the top of the gantry frame 1, and is connected to the wire rope drum 23 and winch turbine 24 mounted on the winch mounting plate 11 via one end of the wire rope 22. The load-bearing module 3 includes an L-shaped fork 31 and a sliding shovel 32. The sliding shovel 32 is placed on the L-shaped fork 31, and the L-shaped fork 31 has pulley groove tracks 38 on both the left and right sides, such as... Figure 3 As shown. The gantry frame 1 has front wheels 4 on the side of the lifting module 2 and steering wheels with brakes 5 on the side of the load-bearing module 3. The gantry frame 1 is made of steel, taking into full account stability and load capacity, ensuring safety when stacking and transporting heavy objects. This allows the trolley to remain stable even when bearing heavy loads, and is not prone to deformation or damage, thereby improving the reliability and service life of the overall structure. The gantry frame 1 is also equipped with a cylindrical handrail 12 to facilitate the movement of the trolley and an auxiliary tool table 13 for placing other installation tools.

[0032] The other end of the wire rope 22 is connected to the load-bearing module mounting plate 34 in the load-bearing module 3, pulling the load-bearing module 3 up and down. Figure 4 As shown, two rollers 35 are provided on each side of the load-bearing module mounting plate 34. The rollers 35 are embedded in the side supports of the gantry frame 1, allowing the load-bearing module 3 to be pulled up and down by the wire rope 22. The L-shaped fork 31 is fixed to the load-bearing module mounting plate 34 by a strip-shaped load-bearing module mounting block 36. The pulleys 37 on the sliding shovel plate 32 are embedded in the pulley groove track 38 of the L-shaped fork 31. The pulleys 37 are mounted on the pulley mounting plates on both sides of the sliding shovel plate 32 through the pulley mounting shaft 33. The connection between the pulley mounting plate and the sliding shovel plate 32 is rounded. The pulleys 37 enable the sliding shovel plate 32 to move back and forth on the L-shaped fork 31 to facilitate the transportation of heavy objects.

[0033] like Figure 5 As shown, in the lifting module 2, the wire rope 22 is wound or released through the wire rope drum 23. The winch turbine 24 meshes with the winch worm gear 25. The winch handle 26 is connected to the winch worm gear 25. Rotating the turbine worm gear 25, through the helix on the turbine worm gear 25 and the gear on the matching winch turbine 24, drives the wire rope drum 23 to wind the wire rope 22, thereby achieving the lifting effect of the forklift. The winch structure of the winch worm gear 25 is simple to operate and easy to maintain, further reducing the overall weight of the equipment. When the winch handle 26 loses external force, due to the frictional resistance between the winch turbine 24 and the winch worm gear 25, it is difficult for them to generate relative movement, thus achieving self-locking. This self-locking property is very important for preventing the lifting module 2 from moving in the opposite direction and improving operational safety. When lifting or pulling heavy objects, the self-locking function can prevent the load from sliding down due to the sudden loss of power from the winch. The contact method between the winch turbine 24 and the winch worm gear 25 ensures smoother operation of the lifting module 2, reducing the impact force generated by gear meshing, making it suitable for work applications requiring stable operation. Furthermore, the lifting module 2 has a compact structure, enabling high reduction ratio transmission within a small space, resulting in low maintenance costs.

[0034] In this embodiment, during the use of the device, push the device to the required operating position, depress the brake pedal on the steering wheel 5, and fix the overall position of the device. Place the heavy object on the sliding shovel 32, and then crank the winch handle 26 to drive the winch turbine 24 and winch worm gear 25 to rotate, which in turn drives the wire rope drum 23, causing the fixed pulley 21 to drive the wire rope 22 to move, thereby pulling the load-bearing module 3 connected to the wire rope 22 to move upward. When the heavy object is lifted to the corresponding height, you can stop cranking the winch handle 26. Due to the working principle of the winch turbine 24 and winch worm gear 25, they have a self-locking function, and the locking effect can be achieved without setting a locking mechanism. If the trolley position is not suitable due to space limitations, push the sliding shovel 32 to move the heavy object back and forth on the plane, and push the heavy object to a suitable position to complete the installation work; when disassembling the heavy object, the process can be reversed.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A mobile trolley device for lifting and transporting heavy objects on subway train maintenance tracks, characterized in that, Includes a door beam frame (1), a lifting module (2), and a load-bearing module (3); The lifting module (2) is fixed to one side of the gantry frame (1) via the winch mounting plate (11), and the load-bearing module (3) is set on the other side of the gantry frame (1). The fixed pulley (21) of the lifting module (2) is installed on the top of the gantry frame (1) and is connected to the wire rope drum (23) and winch turbine (24) installed on the winch mounting plate (11) by one end of the wire rope (22); the load-bearing module (3) includes an L-shaped fork (31) and a sliding shovel (32), the sliding shovel (32) is placed on the L-shaped fork (31), and the L-shaped fork (31) has pulley groove rails (38) on the left and right sides.

2. The mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 1, characterized in that, In the lifting module (2), the wire rope (22) is wound or released through the wire rope drum (23).

3. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 2, characterized in that, In the lifting module (2), the winch turbine (24) meshes with the winch worm gear (25).

4. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 3, characterized in that, The winch handle (26) is connected to the winch worm gear (25).

5. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 1, characterized in that, The other end of the steel wire rope (22) is connected to the load-bearing module mounting plate (34) in the load-bearing module (3), which pulls the load-bearing module (3) up and down.

6. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 5, characterized in that, The load-bearing module mounting plate (34) has two rollers (35) on each side, and the rollers (35) are embedded in the side supports of the door beam frame (1).

7. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 5, characterized in that, The L-shaped fork (31) is fixed to the load-bearing module mounting plate (34) by a strip-shaped load-bearing module mounting block (36).

8. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 7, characterized in that, The pulleys (37) on the sliding shovel plate (32) are embedded in the pulley groove track (38) of the L-shaped fork (31). The pulley mounting plates on both sides of the sliding shovel plate (32) are equipped with pulleys (37) through pulley mounting shafts (33). The connection between the pulley mounting plates and the sliding shovel plate (32) is rounded.

9. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 1, characterized in that, The portal frame (1) has a front wheel (4) on the lifting module (2) side and a steering wheel with brake (5) on the load-bearing module (3) side.

10. A mobile trolley device for lifting and transporting heavy objects on a subway train maintenance track according to claim 9, characterized in that, The lintel frame (1) is also provided with a circular tubular handrail (12) and an auxiliary tool table (13).

Images