Folding arm crane for lower side door of railway open wagon

By designing a folding boom crane for the lower side door of railway open wagons, and using a combination of electric winch and wire rope hoisting, the automated disassembly and installation of the side door of railway open wagons has been realized. This solves the problems of low efficiency and safety hazards in existing technologies, and improves maintenance efficiency and safety.

CN223983401UActive Publication Date: 2026-03-10冯明军
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-02
Publication Date
2026-03-10

AI Technical Summary

Technical Problem

In the existing technology, the disassembly and installation of railway open wagon side doors mainly rely on manual operation, which is inefficient and poses safety hazards. Traditional tools are not suitable for handling heavy side doors, which increases working costs and time.

Method used

A folding boom crane for the lower side door of an open railway wagon was designed. It uses an electric winch to drive the wire rope in conjunction with the lifting device. The flexible design of the folding boom enables the automated disassembly and installation of the side door. Combined with an electrically driven flatbed platform, it improves the ease of operation and safety.

Benefits of technology

It enables automated disassembly and installation of side doors, reducing manual labor intensity, improving maintenance efficiency, and ensuring operational safety and energy conservation.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223983401U_ABST
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Abstract

The utility model relates to a folding arm crane for a lower side door of a railway open wagon. The folding arm crane for the lower side door of the railway open wagon comprises a plate trailer platform and a folding arm crane arranged on the plate trailer platform, wherein the folding arm crane points to the front end of the plate trailer platform; the folding arm crane comprises a stand column and a folding arm frame, and the stand column is vertically arranged in the middle of the plate trailer platform; the folding arm frame is matched with the upright post; an electric capstan is arranged in the middle of the folding arm frame; a guide wheel is arranged at one end of the folding arm frame far away from the upright post; an anti-rotation steel wire rope is wound on the electric capstan and droops after bypassing the guide wheel; the bottom of the steel wire rope is provided with a lifting plug matched with the lower side door of the open wagon. According to the folding arm crane for the lower side door of the railway open wagon, the side door of the open wagon is dismounted, transferred and mounted by combining electric operation, manual operation and remote control, the operation is simple, the difficulty and the working intensity of an overhauling process are reduced, and the overhauling efficiency is improved.
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Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of railway gondola car maintenance, in particular to a railway gondola car lower side door folding arm crane. BACKGROUND

[0002] The railway gondola car is a common freight transport equipment, and is often used for transporting bulk goods such as sand and coal; the gondola car has a large load capacity, is convenient to load and unload, and has a low maintenance cost;

[0003] Hard goods with edges and corners or goods that cause corrosion to the inner wall and side door of the gondola car are often transported in the gondola car; when the gondola car is damaged, the goods will scatter and be lost; therefore, it is very important to maintain the gondola car.

[0004] When loading goods, the side door of the gondola car is prone to deformation due to collision; during transportation, the goods will collide with the side door and cause corrosion; therefore, the side door is easily damaged and cannot be closed tightly, and the goods will scatter, causing economic losses.

[0005] Therefore, during the maintenance of the gondola car, the side door of the gondola car must be repaired and replaced, and the damaged side door needs to be disassembled, transported and installed; currently, the disassembly is performed manually with the cooperation of a forklift; the weight of the side door is generally large, and the traditional tool is inconvenient to operate; the work efficiency of the workers is low, and the cost and time of work are increased; therefore, a device capable of conveniently replacing and repairing the side door of the gondola car is needed. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at solving the above problems and provides a railway gondola car lower side door folding arm crane.

[0007] The technical scheme of the utility model is as follows: a railway gondola car lower side door folding arm crane comprises a platform truck platform and a folding arm crane arranged on the platform truck platform; the folding arm crane is directed to the front end of the platform truck platform; the folding arm crane comprises a stand column and a folding arm frame; the stand column is vertically arranged at the middle part of the platform truck platform; the folding arm frame is matched with the stand column; the folding arm frame is matched with the stand column to fix the position of the folding arm frame; meanwhile, the folding arm frame can make the device more flexible during use.

[0008] The middle part of the folding arm frame is provided with an electric winch; the end of the folding arm frame away from the stand column is provided with a guide wheel; a steel wire rope is wound on the electric winch and drops after passing through the guide wheel; the electric winch is fixed on the folding arm frame and can rotate with the folding arm frame. The bottom of the steel wire rope is provided with a lifting lug matched with the lower side door of the gondola car. The lifting lug can be matched with the lower side door of the gondola car to lift the lower side door of the gondola car, avoiding manual transportation.

[0009] The upper side of the outer surface of the lower side door of the open wagon is provided with a strip-shaped groove, and the left and right sides of the outer surface of the lower side door of the open wagon are respectively provided with a rib plate, which is vertically arranged and used for connecting the lower side door with the open wagon and improving the strength of the lower side door; two gaps are formed between the two rib plates and the strip-shaped groove, and the two ends of the lifting plug bottom extend into the two gaps respectively, so that the lower side door can be lifted.

[0010] Preferably, the lifting plug comprises a tripod and a connecting rod arranged on the same plane; the tripod is an isosceles triangle formed by welding metal rods, and the connecting rod is vertically fixed at the top of the tripod; the metal rods at the bottom of the tripod extend out of the tripod; and the top of the connecting rod is provided with an adapter matched with the steel wire rope. The lifting plug is fixed with the steel wire rope through the adapter, which can facilitate manual adjustment of the angle of the lifting plug, thereby reducing the difficulty of using the device.

[0011] Preferably, the folding arm frame comprises a front end and a rear end, which are hingedly connected; a rotating shaft is arranged on the stand, and a rotating sleeve is arranged at the rear end of the folding arm frame, which is in rotating cooperation with the rotating shaft; and the electric winch is arranged at the top of the front end of the folding arm frame. The front end of the folding arm frame extends out of the platform, and the rear end of the folding arm frame is in cooperation with the rotating shaft on the stand and can rotate; at the same time, the folding arm frame is stably supported; the front end of the folding arm frame is hingedly connected with the rear end of the folding arm frame, so that the front end of the folding arm frame can swing left and right, further enhancing the flexibility of the device, and the platform can be away from the open wagon to avoid collision with the open wagon.

[0012] Preferably, the front part of the platform is provided with a disc-shaped storage rack, and a guardrail is arranged on one side of the storage rack close to the stand. The storage rack can provide a standing platform for workers, and the disassembled open wagon side door can be placed on the storage rack, thereby reducing the labor intensity of workers.

[0013] Preferably, the end of the platform is provided with a cab, and the cab is provided with a steering wheel, a control device and a seat.

[0014] Further, the stand is arranged at a position close to one side edge between the storage rack and the cab. The stand is arranged on one side of the platform, which can provide a good view for the driver, thereby providing more accurate operation and improving work efficiency.

[0015] Further, a baffle is arranged between the cab and the stand. The baffle can enhance the safety of the cab and protect the personal safety of the operator.

[0016] Further, the platform of the platform truck is driven by electricity; the platform of the platform truck comprises a square chassis, wheels arranged at the bottom of the chassis, a power device and a battery; the power device is connected with the wheels, and the control equipment is connected with the power device.

[0017] Further, the steel wire rope is a rotation-preventing steel wire rope.

[0018] The railway open car lower side door folding arm crane has the following advantages:

[0019] 1. The open car side door is disassembled, transported and installed by combining electric driving, manual operation and remote control, so that the operation is simple and flexible, the difficulty and working strength of the maintenance process are reduced, and the maintenance efficiency is improved.

[0020] 2. The open car side door is hoisted by the folding arm crane, so that the dangerous area directly contacted by artificial unloading can be avoided, the workers are prevented from being injured during the maintenance process, and the personal safety of the workers is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structure diagram of the railway open car lower side door folding arm crane of the utility model Figure 1 ;

[0022] Figure 2 is a structure diagram of the railway open car lower side door folding arm crane of the utility model Figure 2 ;

[0023] Figure 3 is Figure 2 an enlarged view of I;

[0024] Figure 4 is a left view of the railway open car lower side door folding arm crane;

[0025] Figure 5 is an A-A sectional view of Figure 4 ;

[0026] Figure 6 is an II enlarged view of Figure 5 ;

[0027] Figure 7 is a schematic view of the open car lower side door and the hoisting plug Figure 1 ;

[0028] Figure 8 is a schematic view of the open car lower side door and the hoisting plug Figure 2 .

[0029] In the figure: 00. The lower side door of the open wagon, 01. The platform of the flat car, 02. The folding arm crane, 03. The rib plate, 04. The groove,

[0030] 11. The shelf, 111. The guardrail, 12. The cab, 121. The steering wheel, 122. The seat, 13. The baffle, 21. The column, 211. The rotating shaft, 22. The folding arm bracket, 221. The rear end of the folding arm bracket, 2211. The rotating sleeve, 222. The front end of the folding arm bracket, 2221. The hinge shaft, 23. The electric winch, 24. The guide wheel, 25. The steel wire rope, 26. The lifting plug, 261. The tripod, 262. The connecting rod, 27. The adapter, 3. The battery. DETAILED DESCRIPTION

[0031] Example one: see Figures 1-7 A folding arm crane for the lower side door of a railway open wagon, comprising a platform of a flat car and a folding arm crane arranged on the platform of the flat car, the folding arm crane pointing to the front end of the platform of the flat car; the folding arm crane comprises a column and a folding arm bracket, the column is vertically arranged at the middle of the platform of the flat car; the folding arm bracket cooperates with the column; the folding arm bracket cooperates with the column to fix the position of the folding arm bracket; at the same time, the form of the folding arm bracket can make the device more flexible during use.

[0032] The middle part of the folding arm bracket is provided with an electric winch, and the end of the folding arm bracket away from the column is provided with a guide wheel; a rotation prevention steel wire rope is wound on the electric winch, and the steel wire rope drops after passing through the guide wheel; the electric winch is fixed on the folding arm bracket and can rotate with the folding arm bracket on the horizontal plane. The bottom of the steel wire rope is provided with a lifting plug matched with the lower side door of the open wagon. The lifting plug can cooperate with the lower side door of the open wagon to lift the lower side door of the open wagon, avoiding manual carrying.

[0033] A strip-shaped groove is arranged on the upper side of the outer surface of the lower side door of the open wagon, and rib plates are arranged on the left and right sides of the outer surface of the lower side door of the open wagon, respectively; the rib plates are vertically arranged, and are used to connect the lower side door with the open wagon and improve the strength of the lower side door; two gaps are formed between the two rib plates and the strip-shaped groove, and the two ends of the bottom of the lifting plug are respectively inserted into the two gaps, so that the lower side door can be lifted

[0034] The lifting plug comprises a tripod and a connecting rod arranged on the same plane; the tripod is in the shape of an isosceles triangle formed by welding metal rods, and the connecting rod is vertically fixed at the top of the tripod; the two ends of the metal rod at the bottom of the tripod extend out of the tripod; the top of the connecting rod is provided with an adapter matched with the steel wire rope. The lifting plug is fixed with the steel wire rope through the adapter, which can facilitate manual adjustment of the angle of the lifting plug, thereby reducing the difficulty of using the device.

[0035] The folding arm frame comprises a front end and a rear end, and the front end and the rear end are hinged; a rotating shaft is arranged on the stand column, and a rotating sleeve is arranged on the rear end of the folding arm frame, and the rotating sleeve is in rotating cooperation with the rotating shaft; the electric winch is arranged on the top of the front end of the folding arm frame. The front end of the folding arm frame extends out of the platform, the rear end of the folding arm frame is in rotating cooperation with the rotating shaft on the stand column, and stable support is provided for the whole folding arm frame; the front end of the folding arm frame is hinged with the rear end of the folding arm frame, so that the front end of the folding arm frame can swing left and right, the flexibility of the device is enhanced, the platform can be away from the open wagon, and collision with the open wagon can be avoided.

[0036] A disc-shaped storage rack is arranged on the front part of the platform, and a guardrail is arranged on one side of the storage rack close to the stand column. The storage rack can provide a standing platform for workers, and the disassembled open wagon side door can be placed on the storage rack, so as to reduce the labor intensity of workers.

[0037] A cab is arranged at the end of the platform, and a steering wheel, a control device and a seat are arranged in the cab.

[0038] The stand column is arranged at a position close to an edge between the storage rack and the cab. The stand column is arranged on one side of the platform, so as to provide a good view for the driver, thereby providing more accurate operation and improving work efficiency.

[0039] A baffle is arranged between the cab and the stand column. The baffle can enhance the safety of the cab and protect the personal safety of the operator.

[0040] The platform is driven by electricity; the platform comprises a square chassis, wheels arranged at the bottom of the chassis, a power device and a battery; the power device is connected with the wheels, and the control device is connected with the power device. The battery provides energy for the power device and the driving motor, and the energy is controlled by the control device, so that the number of operators of the device can be reduced, manpower and cost can be saved, and the device is more environmentally friendly in terms of energy consumption.

[0041] Working process of the embodiment:

[0042] 1. disassembling the lower side door of the open wagon:

[0043] ①Controlling the platform, stopping the platform at the position where the side door of the open wagon needs to be disassembled, and pointing the folding arm frame to the side door of the open wagon;

[0044] ②Starting the electric winch, lowering the hook at the end of the steel wire rope, and rotating the folding arm frame by manually pulling the hook to make the hook close to the side door of the open wagon;

[0045] ③Fixing the hook to the side door of the open wagon, and disassembling the limiting pin of the side door of the open wagon by manually pulling the hook;

[0046] ④Starting the electric winch to retract the steel wire rope and lift the side door of the open wagon;

[0047] 5. Artificially pull the lifting hook to make the folding arm frame rotate to the placing position;

[0048] 6. Release the steel wire rope, and the lifting hook falls to place the lifted side door of the open car on the placing frame or the ground.

[0049] 2. Installation of the lower side door of the open car:

[0050] 1. Place the open car side door to be installed on the placing frame, and fix it with the lifting hook;

[0051] 2. Control the platform of the board car, and stop the platform at the position where the open car side door to be installed is located, and the folding arm frame points to the open car side door;

[0052] 3. Start the electric winch machine to tighten the steel wire rope and lift the open car side door, and manually pull it to the open car;

[0053] 4. After lifting the open car side door to the predetermined position, turn off the electric winch machine, and manually install the limiting pin of the open car side door to the position;

[0054] 5. Remove the lifting hook, and start the electric winch machine to retract the steel wire rope.

[0055] Example two: example two is basically the same as example one, and the same parts will not be repeated. The difference is that the stand is arranged at the position close to the side edge between the placing frame and the cab. The stand is arranged on one side of the platform of the board car, which can provide a good view for the driver, thereby providing more accurate operation and improving work efficiency.

[0056] The specific structure of the lifting hook in the above examples can be realized by being connected with the lower side door of the open car, or other forms in the prior art can be used, which all belong to the protection scope of the present application.

Claims

1. A railway gondola car lower side door knuckle boom, characterized by, The platform truck includes a platform truck platform and a knuckle boom crane arranged on the platform truck platform, the knuckle boom crane points to the front end of the platform truck platform; the knuckle boom crane includes a stand column and a knuckle boom frame, the stand column is vertically arranged in the middle of the platform truck platform; the knuckle boom frame is matched with the stand column; The middle part of the knuckle boom frame is provided with an electric winch, the end of the knuckle boom frame away from the stand column is provided with a guide wheel; the electric winch is wound with a steel wire rope, the steel wire rope is vertically arranged after passing through the guide wheel; the bottom of the steel wire rope is provided with a lifting plug matched with the lower side door of the open wagon.

2. The railway gondola car underslung door knuckle boom jib of claim 1 wherein: The lifting plug includes a triangular frame and a connecting rod arranged on the same plane; the triangular frame is an isosceles triangle shape formed by welding metal rods, the connecting rod is vertically fixed at the top of the triangular frame; the metal rods at both ends of the bottom of the triangular frame extend out of the triangular frame; the top of the connecting rod is provided with an adapter matched with the steel wire rope.

3. The railway gondola car underslung door knuckle boom of claim 1 wherein: The knuckle boom frame includes a front end and a rear end, the front end and the rear end are hinged; the stand column is provided with a rotating shaft, the rear end of the knuckle boom frame is provided with a rotating sleeve, the rotating sleeve is rotationally matched with the rotating shaft; the electric winch is arranged at the top of the front end of the knuckle boom frame.

4. The railway gondola car underslung door knuckle boom of claim 1 wherein: The front part of the platform truck platform is provided with a disc-shaped storage rack, the side of the storage rack close to the stand column is provided with a guardrail.

5. The railway gondola car underslung door knuckle boom of claim 1 wherein: The end of the platform truck platform is provided with a cab, the cab is provided with a steering wheel, a control device and a seat.

6. The railway gondola car underslung boom of any of claims 4-5, wherein: The stand column is arranged at the position close to the side edge between the storage rack and the cab.

7. The railway gondola car underslung door knuckle boom of claim 5 wherein: The cab and the stand column are provided with a baffle.

8. The railway gondola car underslung door knuckle boom of claim 5 wherein: The platform truck is driven by electricity; the platform truck includes a square chassis, wheels arranged at the bottom of the chassis, a power device and a battery; the power device is connected with the wheels, the control device is connected with the power device.

9. The railway gondola car underslung door knuckle boom jib of claim 1 wherein: The steel wire rope is a rotation-preventing steel wire rope.