Steel structure box girder hoisting device
By introducing adjustment and telescopic components into the steel box girder hoisting device, and using servo motors to drive threaded rods and bidirectional lead screws, flexible adjustment of the hoisting position can be achieved, solving the problem that existing devices cannot adapt to steel box girders of different sizes, and reducing construction costs and time.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG HIGHWAY & BRIDGE CONSTR GRP BRIDGE TECH CO LTD
- Filing Date
- 2025-04-21
- Publication Date
- 2026-04-17
AI Technical Summary
Existing hoisting equipment cannot be flexibly adjusted according to the size of the steel box girder when hoisting large-span steel box girders, resulting in increased construction costs and extended construction period.
The steel structure box girder hoisting device includes adjustment components, hoisting components, and telescopic components. It uses servo motors to drive threaded rods, bidirectional lead screws, and casters to achieve flexible adjustment and stable movement of the hoisting position.
It eliminates the need for frequent changes to hoisting equipment, reducing construction costs, shortening the construction cycle, and improving hoisting efficiency.
Smart Images
Figure CN224132517U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of box girder hoisting technology, and in particular to a steel structure box girder hoisting device. Background Technology
[0002] Steel box girder is a common type of bridge structure with advantages such as light weight, high strength, and high construction efficiency. It is usually made up of top plate, bottom plate, web, diaphragm and stiffening ribs connected by welding or bolting. This structural form is not only suitable for beam bridges, but also widely used in long-span bridges such as suspension bridges and cable-stayed bridges.
[0003] There are various types of existing steel box girder hoisting devices, including crawler cranes, cable cranes, and bridge erecting machines. During the hoisting process, appropriate equipment is usually selected based on the weight and span of the steel box girder. Through precise positioning and control, these devices ensure that the steel box girder can be safely and accurately installed in place.
[0004] However, existing hoisting devices are usually not flexible enough to adjust to the size of large-span steel box girders when hoisting them. This results in some hoisting devices being unable to meet the requirements when hoisting some large-span steel box girders, requiring the replacement with larger hoisting equipment. This not only increases construction costs but also extends the construction period. Therefore, this application provides a steel structure box girder hoisting device. Utility Model Content
[0005] The purpose of this application is to provide a steel structure box girder hoisting device to solve the problem that existing hoisting devices are usually not flexible enough to be adjusted according to the size of the steel box girder.
[0006] To achieve the above objectives, this application specifically adopts the following technical solution:
[0007] A steel structure box girder hoisting device includes two hoisting frames. A connecting plate is fixedly connected to the top opposite surfaces of the two hoisting frames. A controller is fixedly connected to one side of one of the hoisting frames. A U-shaped plate is slidably arranged at the bottom of the connecting plate. A moving component is installed inside the connecting plate. An adjusting component is installed inside the U-shaped plate. A hoisting component is installed inside the U-shaped plate. Telescopic components are symmetrically installed at the bottom of the two hoisting frames.
[0008] By adopting the above technical solution, the telescopic component is first manipulated to move the device to the hoisting position. At this time, the moving component inside the connecting plate can be activated to move the U-shaped plate to the top of the steel structure box girder. Then, the hoisting component is activated to lift the steel structure box girder, thereby controlling the hoisting and movement of the box girder and placing it in a suitable position. In addition, when hoisting the box girder with the hoisting component, since different box girders have different sizes and models, the adjustment component can be activated to adjust the position of the hoisting component. This allows the device to flexibly adjust the hoisting position according to the size and model of the steel box girder.
[0009] Furthermore, the moving component includes a threaded rod rotatably connected inside the connecting plate, a servo motor is fixedly connected to one side of one of the hoisting frames, the output end of the servo motor is fixedly connected to one end of the threaded rod, a moving block is threadedly connected to the threaded rod, and the bottom of the moving block is fixedly connected to the top of the U-shaped plate.
[0010] By adopting the above technical solution, the servo motor is started to drive the threaded rod to rotate, so that the moving block moves on the threaded rod, thereby driving the box girder to move.
[0011] Furthermore, a guide rod is fixedly connected inside the connecting plate, and the end of the moving block away from the threaded rod is slidably connected to the guide rod.
[0012] By adopting the above technical solution, the moving block will move on the threaded rod according to the guidance of the guide rod.
[0013] Furthermore, the adjustment assembly includes a bidirectional lead screw rotatably connected inside the U-shaped plate, a servo motor II is fixedly connected to one end of the U-shaped plate, the output end of the servo motor II is fixedly connected to one end of the bidirectional lead screw, and adjustment blocks are symmetrically fixedly connected to the bidirectional lead screw.
[0014] By adopting the above technical solution, the position of the hoisting component can be quickly adjusted by adjusting the position of the two adjusting blocks, so that the device can flexibly adjust the hoisting position according to the size and model of the steel box girder.
[0015] Furthermore, the top of the U-shaped plate is symmetrically provided with sliding grooves, and the tops of the two adjusting blocks are fixedly connected with T-shaped blocks, and the two T-shaped blocks are slidably connected in the sliding grooves respectively.
[0016] By adopting the above technical solution, as the bidirectional lead screw rotates and is guided by the slide and T-block, the two adjusting blocks will gradually move away from each other.
[0017] Furthermore, the hoisting assembly includes two fixed plates symmetrically fixedly connected to the bottom of two adjusting blocks. A rotating shaft is rotatably connected inside the two fixed plates. A servo motor is fixedly connected to one side of one of the fixed plates. The output end of the servo motor is fixedly connected to one end of the rotating shaft. A rope is rotatably wound on the rotating shaft. A hook is fixedly connected to one end of the rope.
[0018] By adopting the above technical solution, the rotation of the shaft will cause the hook to contact the top of the steel structure box girder. At this time, multiple hooks can be connected to the steel structure box girder respectively. Then, the servo motor rotates in the opposite direction to drive multiple hooks to lift the steel structure box girder.
[0019] Furthermore, the telescopic assembly includes symmetrically arranged recessed slots inside the two lifting frames, and telescopic blocks are slidably connected inside the two recessed slots. A rack is fixedly connected to one side of each telescopic block, and casters are symmetrically fixedly connected to the bottom of each telescopic block. A drive component is provided on one side of the lifting frame.
[0020] By adopting the above technical solution, the telescopic block is pushed out from the inner groove, so that the two hoisting frames gradually rise and the casters come into contact with the ground. The multiple casters can quickly move the device to the hoisting position.
[0021] Furthermore, the driving component includes a support block fixedly connected to one side of the hoisting frame. One end of the support block is fixedly connected through an embedded groove. A connecting shaft is fixedly connected inside the support block. A servo motor is fixedly connected inside the support block. The output end of the servo motor is fixedly connected to one end of the connecting shaft. A gear is fixedly connected to the connecting shaft. The gear meshes with a rack.
[0022] By adopting the above technical solution, since the gear and rack mesh with each other, the rotation of the gear will drive the rack and telescopic block to slide inside the inner groove, thereby pushing the telescopic block out from inside the inner groove.
[0023] In summary, this application includes at least one of the following beneficial effects:
[0024] 1. This application includes an adjustment component and a hoisting component. As the bidirectional lead screw rotates and is guided by the slide and T-block, the two adjustment blocks gradually move away from each other. By adjusting the position of the two adjustment blocks, the position of the hook can be quickly adjusted. This allows the device to flexibly adjust the hoisting position according to the size and model of the steel box girder, eliminating the need to replace larger hoisting equipment multiple times, greatly reducing construction costs and shortening the construction period.
[0025] 2. In this application, a telescopic assembly is provided. By pushing the telescopic block out from the recessed groove, the two lifting frames are gradually raised and the casters come into contact with the ground. The casters can quickly move the device to the lifting position. When the lifting position is reached, the telescopic block and casters can be retracted back into the recessed groove, so that the bottom of the lifting frame is in contact with the ground. This stabilizes the position of the lifting frame and reduces the possibility of device displacement during the lifting process. Attached Figure Description
[0026] Figure 1 This is a three-dimensional structural diagram of the main body of the device in this application.
[0027] Figure 2 This is a three-dimensional structural diagram of the movable component in this application.
[0028] Figure 3 This is a three-dimensional structural diagram of the adjustment component in this application.
[0029] Figure 4 This is a three-dimensional structural diagram of the telescopic component in this application.
[0030] Explanation of reference numerals in the attached figures:
[0031] 1. Lifting frame; 2. Connecting plate; 3. Controller; 4. U-shaped plate; 5. Threaded rod; 6. Servo motor one; 7. Moving block; 8. Guide rod; 9. Two-way lead screw; 10. Servo motor two; 11. Adjusting block; 12. Slide groove; 13. T-shaped block; 14. Fixing plate; 15. Rotating shaft; 16. Servo motor three; 17. Rope; 18. Hook; 19. Embedded groove; 20. Telescopic block; 21. Rack; 22. Universal wheel; 23. Support block; 24. Connecting shaft; 25. Servo motor four; 26. Gear. Detailed Implementation
[0032] The following is in conjunction with the appendix Figure 1 —4 provides further detailed description of this application.
[0033] This application discloses a steel structure box girder hoisting device.
[0034] Reference Figure 1 and Figure 2 A steel structure box girder hoisting device includes two hoisting frames 1. A connecting plate 2 is fixedly connected to the top opposite surfaces of the two hoisting frames 1. A controller 3 is fixedly connected to one side of one of the hoisting frames 1. A U-shaped plate 4 is slidably arranged at the bottom of the connecting plate 2. A moving component is installed inside the connecting plate 2. An adjusting component is installed inside the U-shaped plate 4. A hoisting component is installed inside the U-shaped plate 4. Telescopic components are symmetrically installed at the bottom of the two hoisting frames 1.
[0035] In operation, firstly, the telescopic component is operated to extend it from inside the lifting frame 1. Then, the extended telescopic component moves the device to the lifting position, placing the steel box girder below the connecting plate 2. At this point, the moving component inside the connecting plate 2 can be activated to move the U-shaped plate 4 to the top of the steel box girder. Subsequently, the lifting component is activated to lift the steel box girder. After the lifting component is stably connected to the box girder, the moving component can be activated again to move the box girder, thereby controlling the lifting and movement of the box girder and placing it in the appropriate position. In addition, when lifting the box girder using the lifting component, since different box girders have different sizes and models, if the position of the lifting component is inconsistent with the connection position of the box girder, the adjusting component can be activated to adjust the position of the lifting component. This allows the device to flexibly adjust the lifting position according to the size and model of the steel box girder, eliminating the need to repeatedly replace larger lifting equipment, greatly reducing construction costs and shortening the construction period.
[0036] Reference Figure 1 and Figure 2 The moving component includes a threaded rod 5 rotatably connected inside the connecting plate 2. A servo motor 6 is fixedly connected to one side of one of the lifting frames 1. The output end of the servo motor 6 is fixedly connected to one end of the threaded rod 5. A moving block 7 is threadedly connected to the threaded rod 5. The bottom of the moving block 7 is fixedly connected to the top of the U-shaped plate 4. A guide rod 8 is fixedly connected inside the connecting plate 2. The end of the moving block 7 away from the threaded rod 5 is slidably connected to the guide rod 8.
[0037] In use, first start the servo motor 6 to drive the threaded rod 5 to rotate. At this time, guided by the guide rod 8, the moving block 7 will move on the threaded rod 5, thereby moving the U-shaped plate 4 to the top of the steel structure box girder. After the device is stably connected to the box girder, the servo motor 6 can be started again to drive the moving block 7 to move, thereby moving the box girder. By adjusting the position of the box girder, it can be easily placed in a suitable position.
[0038] Reference Figure 2 and Figure 3 The adjustment assembly includes a bidirectional lead screw 9 rotatably connected inside the U-shaped plate 4. A servo motor 10 is fixedly connected to one end of the U-shaped plate 4. The output end of the servo motor 10 is fixedly connected to one end of the bidirectional lead screw 9. Adjustment blocks 11 are symmetrically fixedly connected to the bidirectional lead screw 9. Slide grooves 12 are symmetrically opened on the top of the U-shaped plate 4. T-shaped blocks 13 are fixedly connected to the top of each of the two adjustment blocks 11. The two T-shaped blocks 13 are slidably connected in the slide grooves 12.
[0039] In use, the servo motor 10 is first started to drive the bidirectional lead screw 9 to rotate. As the bidirectional lead screw 9 rotates and is guided by the slide 12 and T-block 13, the two adjusting blocks 11 will gradually move away. By adjusting the position of the two adjusting blocks 11, the position of the hoisting component can be quickly adjusted. This allows the device to flexibly adjust the hoisting position according to the size and model of the steel box girder, eliminating the need to replace larger hoisting equipment multiple times, greatly reducing construction costs and shortening the construction cycle.
[0040] Reference Figure 2 and Figure 3 The hoisting assembly includes two fixed plates 14 symmetrically fixedly connected to the bottom of two adjusting blocks 11. A rotating shaft 15 is rotatably connected inside the two fixed plates 14. A servo motor 16 is fixedly connected to one side of one of the fixed plates 14. The output end of the servo motor 16 is fixedly connected to one end of the rotating shaft 15. A rope 17 is rotatably wound on the rotating shaft 15. A hook 18 is fixedly connected to one end of the rope 17.
[0041] In use, first start the servo motor 16 to drive the rotating shaft 15 to rotate. At this time, the rotation of the rotating shaft 15 will cause the wound rope 17 to gradually loosen, thereby causing the hook 18 to move downwards until the hook 18 contacts the top of the steel structure box girder. At this time, multiple hooks 18 can be connected to the steel structure box girder respectively. Then, the servo motor 16 is rotated in the opposite direction to drive the rope 17 to retract through the rotating shaft 15, thereby driving multiple hooks 18 to lift the steel structure box girder.
[0042] Reference Figure 1 and Figure 4 The telescopic assembly includes symmetrically arranged recessed slots 19 inside the two lifting frames 1. Telescopic blocks 20 are slidably connected inside the two recessed slots 19. A rack 21 is fixedly connected to one side of the telescopic block 20. Universal wheels 22 are symmetrically fixedly connected to the bottom of the telescopic block 20. A driving component is provided on one side of the lifting frame 1. The driving component includes a support block 23 fixedly connected to one side of the lifting frame 1. One end of the support block 23 is fixedly connected through the recessed slot 19. A connecting shaft 24 is fixedly connected inside the support block 23. A servo motor 25 is fixedly connected inside the support block 23. The output end of the servo motor 25 is fixedly connected to one end of the connecting shaft 24. A gear 26 is fixedly connected to the connecting shaft 24. The gear 26 meshes with the rack 21.
[0043] In use, the servo motor 25 is first started to drive the connecting shaft 24 to rotate, which causes the gear 26 to rotate as well. Since the gear 26 meshes with the rack 21, the rotation of the gear 26 will drive the rack 21 and the telescopic block 20 to slide inside the inner groove 19, thereby pushing the telescopic block 20 out of the inner groove 19. This causes the two lifting frames 1 to gradually rise and the casters 22 to contact the ground. The multiple casters 22 can quickly move the device to the lifting position. When the lifting position is reached, the servo motor 25 can be rotated in the opposite direction to drive the telescopic block 20 and the casters 22 to retract back into the inner groove 19, so that the bottom of the lifting frame 1 is in contact with the ground. This stabilizes the position of the lifting frame 1 and reduces the possibility of device displacement during the lifting process.
[0044] The implementation principle of the steel structure box girder hoisting device in this embodiment is as follows: During use, the servo motor 25 is first started to drive the connecting shaft 24 to rotate, thereby causing the gear 26 to rotate as well. Since the gear 26 meshes with the rack 21, the rotation of the gear 26 causes the rack 21 and the telescopic block 20 to slide inside the inner groove 19, thus pushing the telescopic block 20 out of the inner groove 19. This causes the two hoisting frames 1 to gradually rise and the casters 22 to contact the ground. The multiple casters 22 can quickly move the device to the hoisting position. When the hoisting position is reached, the servo motor 25 can be rotated in the opposite direction to retract the telescopic block 20 and the casters 22 back into the inner groove 19, so that the bottom of the hoisting frame 1 is in contact with the ground. This stabilizes the position of the hoisting frame 1, reducing the possibility of device displacement during hoisting, and ensuring that the steel structure box girder is positioned on the connecting plate 2. Below, servo motor 6 can be started to drive the threaded rod 5 to rotate. Guided by guide rod 8, the moving block 7 will move on the threaded rod 5, thereby moving the U-shaped plate 4 to the top of the steel structure box girder. Then, servo motor 16 can be started to drive the rotating shaft 15 to rotate. The rotation of the rotating shaft 15 will cause the wound rope 17 to gradually loosen, thereby causing the hook 18 to gradually move downward until the hook 18 contacts the top of the steel structure box girder. At this time, multiple hooks 18 can be connected to the steel structure box girder. Then, servo motor 16 can be rotated in the opposite direction to drive the rope 17 to retract through the rotating shaft 15, thereby driving multiple hooks 18 to lift the steel structure box girder. After the hooks 18 are stably connected to the box girder, servo motor 6 can be started again to drive the moving block 7 to move, thereby moving the box girder. By adjusting the position of the box girder, it can be easily placed in a suitable position.
[0045] Furthermore, when hoisting box girders using hoisting components, since different box girders vary in size and model, if the position of the hoisting components is inconsistent with the connection position of the box girder, the servo motor 10 can be activated to drive the bidirectional lead screw 9 to rotate. As the bidirectional lead screw 9 rotates and is guided by the slide 12 and T-block 13, the two adjusting blocks 11 will gradually move away. By adjusting the position of the two adjusting blocks 11, the position of the hoisting components can be quickly adjusted. This allows the device to flexibly adjust the hoisting position according to the size and model of the steel box girder, eliminating the need to replace larger hoisting equipment multiple times, greatly reducing construction costs and shortening the construction cycle.
Claims
1. A steel structure box girder hoisting device, comprising two hoisting frames (1), characterized in that: A connecting plate (2) is fixedly connected to the top opposite surfaces of the two hoisting frames (1). A controller (3) is fixedly connected to one side of one of the hoisting frames (1). A U-shaped plate (4) is slidably provided at the bottom of the connecting plate (2). A moving component is installed inside the connecting plate (2). An adjusting component is installed inside the U-shaped plate (4). A hoisting component is installed inside the U-shaped plate (4). Telescopic components are symmetrically installed at the bottom of the two hoisting frames (1).
2. The steel structure box girder hoisting device according to claim 1, characterized in that: The moving component includes a threaded rod (5) rotatably connected inside the connecting plate (2), and a servo motor (6) is fixedly connected to one side of one of the hoisting frames (1). The output end of the servo motor (6) is fixedly connected to one end of the threaded rod (5). A moving block (7) is threadedly connected to the threaded rod (5), and the bottom of the moving block (7) is fixedly connected to the top of the U-shaped plate (4).
3. The steel structure box girder hoisting device according to claim 2, characterized in that: The connecting plate (2) is fixedly connected to a guide rod (8), and the end of the moving block (7) away from the threaded rod (5) is slidably connected to the guide rod (8).
4. The steel structure box girder hoisting device according to claim 1, characterized in that: The adjustment assembly includes a bidirectional lead screw (9) rotatably connected inside the U-shaped plate (4). A servo motor (10) is fixedly connected to one end of the U-shaped plate (4). The output end of the servo motor (10) is fixedly connected to one end of the bidirectional lead screw (9). Adjustment blocks (11) are symmetrically fixedly connected to the bidirectional lead screw (9).
5. The steel structure box girder hoisting device according to claim 4, characterized in that: The top of the U-shaped plate (4) is symmetrically provided with a sliding groove (12), and the top of the two adjusting blocks (11) is fixedly connected with a T-shaped block (13), and the two T-shaped blocks (13) are slidably connected in the sliding groove (12).
6. The steel structure box girder hoisting device according to claim 4, characterized in that: The hoisting assembly includes two fixed plates (14) symmetrically fixedly connected to the bottom of two adjusting blocks (11). The two fixed plates (14) are rotatably connected to a rotating shaft (15). A servo motor (16) is fixedly connected to one side of one of the fixed plates (14). The output end of the servo motor (16) is fixedly connected to one end of the rotating shaft (15). A rope (17) is rotatably wound on the rotating shaft (15). A hook (18) is fixedly connected to one end of the rope (17).
7. The steel structure box girder hoisting device according to claim 1, characterized in that: The telescopic assembly includes symmetrically arranged recessed slots (19) inside two hoisting frames (1). Telescopic blocks (20) are slidably connected inside both recessed slots (19). A rack (21) is fixedly connected to one side of each telescopic block (20). A caster wheel (22) is symmetrically fixedly connected to the bottom of each telescopic block (20). A drive component is provided on one side of each hoisting frame (1).
8. The steel structure box girder hoisting device according to claim 7, characterized in that: The driving component includes a support block (23) fixedly connected to one side of the hoisting frame (1). One end of the support block (23) is fixedly connected through the inner groove (19). A connecting shaft (24) is fixedly connected inside the support block (23). A servo motor (25) is fixedly connected inside the support block (23). The output end of the servo motor (25) is fixedly connected to one end of the connecting shaft (24). A gear (26) is fixedly connected on the connecting shaft (24). The gear (26) meshes with a rack (21).