A dock crane frame repair and transport device

By designing a dock crane frame repair and transportation device, and utilizing pallets, casters, and reinforced columns, the problem of difficulty in pushing the frame in confined spaces and safety hazards was solved, achieving stable lifting and efficient repair.

CN224576634UActive Publication Date: 2026-07-31CHENGXI SHIPYARD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
CHENGXI SHIPYARD
Filing Date
2025-06-25
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

In the traveling mechanism of the Jiangshan dock crane, frame repairs need to be carried out on the narrow dock wall. The heavy weight and the tendency to tip over make it difficult to push, pose significant safety hazards, and result in low work efficiency.

Method used

Design a dock crane frame repair and transportation device, which adopts a structure including a pallet, casters, fixed reinforcement columns and movable reinforcement columns. The frame is hoisted onto the pallet by a hand-operated hoist. The casters are used for movement, and the fixed and movable reinforcement columns are combined to increase stability. The length of the U-shaped bar and the handrail is adjusted with a spring structure to accommodate operators of different heights.

Benefits of technology

It enables stable hoisting and overturning repair of the chassis, improves operational safety and efficiency, prevents equipment from tipping over, and adapts to the operational needs of different heights.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the technical field of dock crane frame repair auxiliary devices, and discloses a dock crane frame repair and transportation device, including a pallet. Multiple casters are mounted on the bottom outer surface of the pallet. A fixed reinforcing column is fixedly connected to the outer surface of a fixed base. A movable reinforcing column is movably inserted outside the fixed reinforcing column. A rotating seat is rotatably connected to the outer surface of a mounting plate. A movable wheel is mounted on the bottom outer surface of the rotating seat. A first spring is fixedly connected between the fixed reinforcing column and the mounting plate. The crane frame is hoisted onto the pallet using a hand-operated hoist. By applying force to the device, the casters move on the ground, thereby moving the crane frame directly under the gantry crane hook for hoisting, turning, and repair. After repair, it is transported back to its original location for installation. The use of fixed and movable reinforcing columns in conjunction with the first spring prevents the device from tipping over, increasing its stability during movement.
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Description

Technical Field

[0001] This utility model relates to the technical field of dock crane frame repair auxiliary devices, specifically a dock crane frame repair and transportation device. Background Technology

[0002] A dock crane is a type of lifting equipment used in shipbuilding and marine engineering. It is typically installed on the dock wall or top of a dock and is used to lift and assemble hull components, perform ship repairs, and assist in other operations.

[0003] During the dismantling and repair of the intermediate frame of the dock crane traveling mechanism in Jiangshan, the repair of the dock crane traveling frame needs to be done on-site. However, the space on the dock wall is too narrow. After the frame is completely dismantled, it needs to be hoisted to the area under the gantry crane hook for turning over and dismantling. The frame is quite heavy, and in the past, it was mainly pushed manually during the transport process. However, due to damage to the bearings or wheels of the frame's wheels, it could not be pushed smoothly, and it was easy to tip over and injure people during the pushing process. This resulted in slow work efficiency and significant safety hazards. Therefore, a dock crane frame repair and transport device was proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dock crane frame repair and transportation device to solve the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dock crane frame repair and transport device, comprising a pallet, a plurality of universal wheels installed on the bottom outer surface of the pallet, fixed seats fixedly connected to the left and right outer surfaces of the pallet, fixed reinforcing columns fixedly connected to the outer surfaces of the fixed seats, movable reinforcing columns movably inserted on the outside of the fixed reinforcing columns, a mounting plate fixedly connected to the other end of the movable reinforcing columns, a rotating seat rotatably connected to the outer surface of the mounting plate, a movable wheel installed on the bottom outer surface of the rotating seat, and a first spring fixedly connected between the fixed reinforcing columns and the mounting plate, the first spring being sleeved on the outer surface of the movable reinforcing columns.

[0006] As a further explanation of this utility model, two handrails are fixedly connected to the outer surfaces of both the front and rear sides of the tray. A U-shaped rod is movably inserted inside the two handrails. Positioning holes are opened on the outer surfaces of the handrails and the U-shaped rods. Positioning posts are movably inserted into the corresponding positioning holes of the handrails and the U-shaped rods. A pressing rod is movably inserted into the top outer surface of the U-shaped rod. A pressing block is fixedly connected to the top outer surface of the pressing rod. An L-shaped plate is fixedly connected to the outer surface of the positioning post. A triangular block is fixedly connected to the top outer surface of the L-shaped plate. A connecting plate is fixedly connected to the bottom outer surface of the pressing rod. Two connecting rods are fixedly connected to the bottom outer surface of the connecting plate. A trapezoidal block is fixedly connected to the other end of the connecting rod.

[0007] As a further explanation of this utility model, a plurality of support columns are fixedly connected to the bottom outer surface of the tray, and each of the support columns is provided with ball bearings on its bottom outer surface.

[0008] As a further explanation of this utility model, a second spring is fixedly connected to the outer surface of the L-shaped plate, and the other end of the second spring is fixedly connected to the inner wall of the U-shaped rod.

[0009] As a further explanation of this utility model, a third spring is fixedly connected to the bottom outer surface of the connecting plate, and the other end of the third spring is fixedly connected to the inner wall of the U-shaped rod.

[0010] As a further explanation of this utility model, there are six casters, and the six casters are evenly and symmetrically arranged on the bottom of the tray.

[0011] As a further explanation of this utility model, the number of positioning holes on the outer surface of the handrail is several and arranged in a linear array, the number of positioning holes on the outer surface of the U-shaped rod is one, and the positioning post movably penetrates the positioning hole on the outer surface of the U-shaped rod.

[0012] As a further explanation of this utility model, a telescopic rod is fixedly connected between the L-shaped plate and the inner wall of the handrail, and the second spring is sleeved on the outside of the telescopic rod.

[0013] As a further explanation of this utility model, the trapezoidal block is a right trapezoid, the triangular block is a right triangle, and the inclined surface of the trapezoidal block corresponds to the inclined surface of the triangular block.

[0014] As a further explanation of this utility model, a limiting frame is fixedly connected to the top outer surface of the tray.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. In the dock crane frame repair and transportation device provided by this utility model, the frame is hoisted onto the pallet by a hand-operated hoist. By applying force to the device, the casters move on the ground, thereby moving the frame directly under the gantry crane hook for hoisting, turning and repair. After repair, it is transported back to its original location for installation. By setting fixed and movable reinforcement columns in conjunction with the first spring, the device is prevented from tipping over, thus increasing the stability of the device during movement.

[0017] 2. In the dock crane frame repair and transportation device provided by this utility model, by setting up a pressing block and a pressing rod in conjunction with a third spring, a connecting plate and a connecting rod to drive the trapezoidal block and the triangular block, the positioning column is disengaged from the positioning hole. The length between the U-shaped rod and the handrail is adjusted, and with the help of the second spring, the positioning bead is inserted into the corresponding positioning hole, which limits the U-shaped rod and the handrail, thereby facilitating the use of workers of different heights and making it easier to apply force to the device. Attached Figure Description

[0018] Figure 1 This is a front view structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model from below;

[0020] Figure 3 This is a schematic diagram of the fixed reinforcement column and its related structures according to this utility model;

[0021] Figure 4 This is a schematic diagram of the internal structure of the handrail and related components of this utility model;

[0022] Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0023] Figure 6 This utility model Figure 4 Enlarged structural diagram at point B.

[0024] In the diagram: 1. Support plate; 2. Casters; 3. Fixed base; 4. Fixed reinforcing column; 5. Movable reinforcing column; 6. First spring; 7. Mounting plate; 8. Rotating base; 9. Moving wheel; 10. Handrail; 11. U-shaped rod; 12. Positioning hole; 13. Positioning column; 14. Second spring; 15. L-shaped plate; 16. Triangular block; 17. Connecting rod; 18. Trapezoidal block; 19. Connecting plate; 20. Third spring; 21. Pressing rod; 22. Pressing block; 23. Support column; 24. Limiting frame. 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] Example 1:

[0027] Please refer to the following: Figures 1-6This utility model provides a technical solution: a dock crane frame repair and transport device, including a pallet 1, with multiple casters 2 installed on the bottom outer surface of the pallet 1, fixed seats 3 fixedly connected to the left and right outer surfaces of the pallet 1, fixed reinforcing columns 4 fixedly connected to the outer surface of the fixed seats 3, movable reinforcing columns 5 movably inserted on the outside of the fixed reinforcing columns 4, and a mounting plate 7 fixedly connected to the other end of the movable reinforcing columns 5. A rotating seat 8 is rotatably connected to the outer surface of the mounting plate 7, and a movable wheel 9 is installed on the bottom outer surface of the rotating seat 8. A first spring 6 is fixedly connected between the fixed reinforcing columns 4 and the mounting plate 7, and the first spring 6 is sleeved on the outer surface of the movable reinforcing columns 5. Specifically, pushing the device causes the casters 2 to move on the ground, thereby moving the entire frame to directly under the gantry crane hook for hoisting and overturning repair, which is convenient, fast, and improves operational safety. After repair, it is transported back to its original location for installation. During transportation, the fixed reinforcing columns 4 and movable reinforcing columns 5 prevent the device from tipping over.

[0028] In this embodiment, a number of support columns 23 are fixedly connected to the bottom outer surface of the pallet 1. Each of the support columns 23 is provided with a ball bearing. Specifically, the support columns 23 support the bottom of the pallet 1, increasing the support strength of the pallet 1, and causing the ball bearing to move on the ground when the device moves.

[0029] In this embodiment, there are six casters 2, and the six casters 2 are evenly and symmetrically arranged at the bottom of the tray 1. Specifically, the diameter of the casters 2 is 100mm. It is calculated that the bottom can bear about 2500KG when six casters 2 with a diameter of 100mm are installed.

[0030] In this embodiment, a limiting frame 24 is fixedly connected to the top outer surface of the pallet 1, and the limiting frame 24 limits the movement of the vehicle frame.

[0031] In the specific implementation process, after the frame is disassembled, it is directly hoisted onto the pallet 1 by hand-operated hoist. The pallet 1 supports the frame and pushes the device, causing the casters 2 to move on the ground. This moves the entire frame directly under the gantry crane hook for hoisting and overturning repair, which is convenient, quick, and improves operational safety. After repair, it is transported back to its original location for installation. During transportation, the fixed reinforcing column 4 and the movable reinforcing column 5 prevent the device from tipping over. When moving, the movable wheel 9 moves on the ground. When subjected to force on both sides, the movable reinforcing column 5 moves within the fixed reinforcing column 4. The first spring 6 deforms, buffering the tilting force and increasing the stability of the device during movement.

[0032] Example 2:

[0033] Please refer to the following: Figures 1-6This utility model provides a technical solution: Two handrails 10 are fixedly connected to the outer surfaces of both the front and rear sides of the support plate 1. A U-shaped rod 11 is movably inserted inside the two handrails 10. Positioning holes 12 are formed on the outer surfaces of both the handrails 10 and the U-shaped rod 11. Positioning posts 13 are movably inserted into the corresponding positioning holes 12 of the handrails 10 and the U-shaped rod 11. A pressing rod 21 is movably inserted into the top outer surface of the U-shaped rod 11. A pressing block 22 is fixedly connected to the top outer surface of the pressing rod 21. An L-shaped plate 15 is fixedly connected to the outer surface of the positioning post 13. A triangular block 16 is fixedly connected to the top outer surface of the L-shaped plate 15. The bottom of the pressing rod 21... A connecting plate 19 is fixedly connected to the outer surface. Two connecting rods 17 are fixedly connected to the bottom outer surface of the connecting plate 19. A trapezoidal block 18 is fixedly connected to the other end of the connecting rod 17. Specifically, pressing the pressing block 22 causes the pressing block 22 to drive the pressing rod 21 to move downward, which causes the connecting plate 19 to drive the connecting rod 17 to move downward, which causes the trapezoidal block 18 to move downward. The trapezoidal block 18 presses the triangular block 16, causing the triangular block 16 to move. The triangular block 16 drives the L-shaped plate 15 to move, and the positioning post 13 disengages from the positioning hole 12, thereby releasing the limit between the U-shaped rod 11 and the handrail 10 and adjusting the length between the U-shaped rod 11 and the handrail 10.

[0034] In this embodiment, a second spring 14 is fixedly connected to the outer surface of the L-shaped plate 15, and the other end of the second spring 14 is fixedly connected to the inner wall of the U-shaped rod 11. Specifically, when the positioning post 13 is subjected to force and retracts into the U-shaped rod 11, the second spring 14 deforms. When the positioning post 13 is not subjected to force, the positioning post 13 is reset by the second spring 14.

[0035] In this embodiment, a third spring 20 is fixedly connected to the bottom outer surface of the connecting plate 19. The other end of the third spring 20 is fixedly connected to the inner wall of the U-shaped rod 11. Specifically, pressing down on the pressing block 22 causes the pressing rod 21 to drive the connecting plate 19, causing the third spring 20 to deform. When the force applied to the pressing block 22 is stopped, the third spring 20 drives the connecting plate 19, causing the pressing rod 21 to return to its original position.

[0036] In this embodiment, the number of positioning holes 12 on the outer surface of the handrail 10 is several and arranged in a linear array, and the number of positioning holes 12 on the outer surface of the U-shaped rod 11 is one. The positioning post 13 movably passes through the positioning hole 12 on the outer surface of the U-shaped rod 11. Specifically, by adjusting the position of the U-shaped rod 11 inside the handrail 10, the positioning holes 12 on the surface of the U-shaped rod 11 correspond to the positioning holes 12 on the surface of the handrail 10, thereby adjusting the length between the U-shaped rod 11 and the handrail 10.

[0037] In this embodiment, a telescopic rod is fixedly connected between the L-shaped plate 15 and the inner wall of the handrail 10. The second spring 14 is sleeved on the outside of the telescopic rod. Specifically, when the positioning column 13 moves, it drives the L-shaped plate 15 to extend and retract accordingly, so that the positioning column 13 moves in a stable linear motion. The telescopic column limits the second spring 14 to prevent the second spring 14 from tilting.

[0038] In this embodiment, the trapezoidal block 18 is a right trapezoid, and the triangular block 16 is a right triangle. The inclined surface of the trapezoidal block 18 corresponds to the inclined surface of the triangular block 16. Specifically, by having the inclined surface of the trapezoidal block 18 correspond to the inclined surface of the triangular block 16, when the trapezoidal block 18 moves downward, it can squeeze the triangular block 16, causing the second spring 14 to deform, thereby causing the positioning post 13 to retract into the interior of the handrail 10.

[0039] In practical implementation, when the device is pushed, force is applied to the U-shaped rod 11 and the handle 10, thus applying force to the device. By pressing the pressing block 22, the pressing rod 21 moves downward, which in turn moves the connecting plate 19 downward, causing the third spring 20 to deform. The connecting plate 19 then moves the connecting rod 17 downward, causing the trapezoidal block 18 to move downward. The trapezoidal block 18 presses against the triangular block 16, causing the triangular block 16 to move. The triangular block 16 then moves the L-shaped plate 15, causing the second spring 14 to deform. The positioning post 13 disengages from the positioning hole 12, thereby connecting the U-shaped rod 11 with... When the handrail 10 is released from its limit, force is applied to the U-shaped rod 11 to adjust the length between the U-shaped rod 11 and the handrail 10. After the adjustment is completed, when the force applied to the pressing rod 21 is stopped, the third spring 20 and the second spring 14 are reset. When the third spring 20 is reset, it drives the connecting plate 19 to connect the rod 17, causing the trapezoidal block 18 to move upward. When the second spring 14 is reset, it drives the positioning post 13 to reset, so that the positioning post 13 is inserted into the corresponding positioning hole 12, limiting the handrail 10 and the U-shaped rod 11, thus facilitating the use of the device by workers of different heights and making it easier to apply force to the device.

[0040] Working principle: When using this utility model, after the frame is disassembled, it is directly hoisted onto the pallet 1 by hand-operated hoist. The pallet 1 supports the frame and pushes the device, causing the casters 2 to move on the ground. This moves the entire frame directly under the gantry crane hook for hoisting and overturning repair, which is convenient, quick, and improves operational safety. After repair, it is transported back to its original location for installation. During transportation, the fixed reinforcing column 4 and the movable reinforcing column 5 prevent the device from tipping over. When moving, the movable wheel 9 moves on the ground. When subjected to force on both sides, the movable reinforcing column 5 moves within the fixed reinforcing column 4. The first spring 6 deforms, buffering the tilting force and increasing the stability of the device during movement.

[0041] When the device is pushed, force is applied to the U-shaped rod 11 and the handrail 10, thus applying force to the device. Pressing the pressing block 22 causes the pressing rod 21 to move downwards, which in turn moves the connecting plate 19 downwards, causing the third spring 20 to deform. The connecting plate 19 then moves the connecting rod 17 downwards, causing the trapezoidal block 18 to move downwards. The trapezoidal block 18 presses against the triangular block 16, causing the triangular block 16 to move. The triangular block 16 then moves the L-shaped plate 15, causing the second spring 14 to deform. The positioning pin 13 disengages from the positioning hole 12, thereby aligning the U-shaped rod 11 with the handrail 10. Release the limit between 0 and 0, apply force to the U-shaped rod 11, adjust the length between the U-shaped rod 11 and the handrail 10, and after the adjustment is completed, stop applying force to the pressing rod 21, so that the third spring 20 and the second spring 14 are reset. When the third spring 20 is reset, it drives the connecting plate 19 to connect the rod 17, so that the trapezoidal block 18 moves upward. When the second spring 14 is reset, it drives the positioning post 13 to reset, so that the positioning post 13 is inserted into the corresponding positioning hole 12, limiting the handrail 10 and the U-shaped rod 11, thereby facilitating the use of personnel of different heights and facilitating the application of force to the device.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A docking crane frame repair barge, comprising a bedplate (1), characterized in that: The bottom outer surface of the pallet (1) is equipped with multiple casters (2). The left and right outer surfaces of the pallet (1) are fixedly connected with fixed seats (3). The outer surface of the fixed seats (3) is fixedly connected with fixed reinforcing columns (4). The outside of the fixed reinforcing columns (4) is movably inserted with a movable reinforcing column (5). The other end of the movable reinforcing column (5) is fixedly connected with a mounting plate (7). The outer surface of the mounting plate (7) is rotatably connected with a rotating seat (8). The bottom outer surface of the rotating seat (8) is equipped with a moving wheel (9). The fixed reinforcing column (4) and the mounting plate (7) are fixedly connected with a first spring (6). The first spring (6) is sleeved on the outer surface of the movable reinforcing column (5).

2. The dock crane frame repair and transport device according to claim 1, characterized in that: Two handrails (10) are fixedly connected to the outer surfaces of the front and rear sides of the tray (1). A U-shaped rod (11) is movably inserted inside the two handrails (10). A positioning hole (12) is opened on the outer surface of the handrails (10) and the U-shaped rod (11). A positioning post (13) is movably inserted in the corresponding positioning hole (12) of the handrails (10) and the U-shaped rod (11). A pressing rod (21) is movably inserted on the top outer surface of the U-shaped rod (11). A pressing block (22) is fixedly connected to the top outer surface of the pressing rod (21). An L-shaped plate (15) is fixedly connected to the outer surface of the positioning post (13). A triangular block (16) is fixedly connected to the top outer surface of the L-shaped plate (15). A connecting plate (19) is fixedly connected to the bottom outer surface of the pressing rod (21). Two connecting rods (17) are fixedly connected to the bottom outer surface of the connecting plate (19). A trapezoidal block (18) is fixedly connected to the other end of the connecting rod (17).

3. The dock crane frame repair and transport device according to claim 1, characterized in that: The bottom outer surface of the tray (1) is fixedly connected with several support columns (23), and the bottom outer surface of the several support columns (23) is provided with ball bearings.

4. The dock crane frame repair and transport device according to claim 2, characterized in that: The outer surface of the L-shaped plate (15) is fixedly connected to a second spring (14), and the other end of the second spring (14) is fixedly connected to the inner wall of the U-shaped rod (11).

5. A dock crane frame repair and transport device according to claim 2, characterized in that: A third spring (20) is fixedly connected to the bottom outer surface of the connecting plate (19), and the other end of the third spring (20) is fixedly connected to the inner wall of the U-shaped rod (11).

6. The dock crane frame repair and transport device according to claim 1, characterized in that: There are six casters (2), and the six casters (2) are evenly and symmetrically arranged on the bottom of the tray (1).

7. A dock crane frame repair and transport device according to claim 2, characterized in that: The number of positioning holes (12) on the outer surface of the handrail (10) is several and arranged in a linear array. The number of positioning holes (12) on the outer surface of the U-shaped rod (11) is one. The positioning post (13) moves through the positioning holes (12) on the outer surface of the U-shaped rod (11).

8. A dock crane frame repair and transport device according to claim 4, characterized in that: A telescopic rod is fixedly connected between the L-shaped plate (15) and the inner wall of the handrail (10), and the second spring (14) is sleeved on the outside of the telescopic rod.

9. A dock crane frame repair and transport device according to claim 2, characterized in that: The trapezoidal block (18) is a right trapezoid, and the triangular block (16) is a right triangle. The inclined surface of the trapezoidal block (18) corresponds to the inclined surface of the triangular block (16).

10. A dock crane frame repair and transport device according to claim 1, characterized in that: A limiting frame (24) is fixedly connected to the top outer surface of the tray (1).