Steel box girder segment inner support hoisting device

Abstract

The utility model provides a steel box girder segment inner support hoisting device, which comprises an inner support structure arranged in a steel box girder and a hoisting structure arranged on the peripheral side of the steel box girder, the inner support structure is a Y-shaped structure, the two adjacent inner support structures form an angle of 180 degrees, a protection plate is arranged between the inner support structure and the steel box girder, and the hoisting structure is arranged on the peripheral side of the steel box girder. The lifting structure comprises a lifting rope, an upper clamping plate and a lower clamping plate, two pull ropes are arranged between the upper clamping plate and the lower clamping plate, one end of each pull rope corresponds to the lifting rope, a steering structure is arranged on the lower side of the lower clamping plate, and the steering structure corresponds to the pull ropes. According to the utility model, the inner support structure is arranged in the steel box girder to support the inside of the steel box girder and prevent the steel box girder from deforming, the two pull ropes are arranged between the upper clamping plate and the lower clamping plate, and the steering structure is arranged on the lower side of the lower clamping plate to prevent the top plate of the steel box girder from being directly pulled upwards, so that the steel box girder is prevented from deforming; and the upward pulling force can downwards press the top plate of the steel box girder, so that the stability and the safety of the steel box girder are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of hoisting devices, in particular to a steel box girder segment inner support hoisting device. Background Art

[0002] Steel structure bridges have been widely used in bridge projects in my country. During the hoisting construction of steel structure bridges, how to enhance the stiffness of steel box girder segments, improve the hoisting construction efficiency, and reduce the damage to steel box girders during hoisting has always been the focus and difficulty of engineering control. In the existing technology, when hoisting steel box girder segments, sling connecting bars are usually welded on the top plate of the steel box girder and external hoisting equipment is used for hoisting construction. Although this technology can meet the problem of steel box girder hoisting construction, it is easy to cause the steel box girder to twist and deform during hoisting construction, resulting in damage to the steel box girder and affecting the hoisting quality.

[0003] To this end, the utility model provides a steel box girder segment inner support hoisting device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a steel box girder segment internal support hoisting device to solve the problems raised in the above-mentioned background technology. The present invention can support the inside of the steel box girder to prevent the steel box girder from deformation; it can avoid directly pulling the top plate of the steel box girder upward, thereby preventing the steel box girder from deformation, and the upward pulling force can press the top plate of the steel box girder downward, thereby ensuring the stability and safety of the steel box girder and the quality of the hoisting.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical solutions: a steel box girder segment internal support lifting device, comprising an internal support structure installed in the steel box girder and a lifting structure installed on the side of the steel box girder, the internal support structure is a Y-shaped structure, the two adjacent internal support structures are 180°, a protective plate is installed between the internal support structure and the steel box girder, the lifting structure includes a lifting rope, an upper splint and a lower splint, two pull ropes are installed between the upper splint and the lower splint, one end of the pull rope corresponds to the lifting rope, and a steering structure is installed on the lower side of the lower splint, and the steering structure corresponds to the pull rope.

[0006] Furthermore, the inner support structure includes a rotating shaft, and a telescopic rod is installed on the circumference of the rotating shaft, and one end of the telescopic rod corresponds to the protective plate.

[0007] Furthermore, the rotating shaft is rotatably connected to the telescopic rod, a fixing plate is fixed to the end of the telescopic rod, and the fixing plate is fixedly connected to the protective plate.

[0008] Furthermore, the protection plate is a C-shaped structure, and multiple protection plates are in contact with the upper and lower sides of the steel box girder respectively.

[0009] Furthermore, the two pull ropes are respectively located on both sides of the upper splint and the lower splint, and the pull ropes include three first connection ends and one second connection end.

[0010] Furthermore, the first connecting end is fixedly connected to the upper splint, and the second connecting end is fixedly connected to the sling.

[0011] Furthermore, the steering structure includes a fixed pulley, which is rotatably engaged below the lower clamping plate and corresponds to the second connecting end.

[0012] Furthermore, a through slot is provided in the lower splint, and the through slot corresponds to the pull rope.

[0013] Beneficial effects of the utility model: The utility model provides a steel box girder segment internal support hoisting device, comprising a steel box girder; an internal support structure; an upper splint; a lower splint; and a pull rope.

[0014] Installing an internal support structure inside the steel box girder can support the inside of the steel box girder and prevent it from deformation. Installing two pull ropes between the upper and lower splints and installing a steering structure on the lower side of the lower splint can avoid directly pulling the top plate of the steel box girder upward, thereby preventing the steel box girder from deformation. The upward pulling force can press the top plate of the steel box girder downward, ensuring the stability and safety of the steel box girder and the quality of the lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall assembly three-dimensional structure of a steel box girder segment internal support hoisting device of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall assembly cross-sectional structure of a steel box girder segment internal support hoisting device of the utility model;

[0017] Figure 3 This is a schematic diagram of the assembly three-dimensional structure of the inner support structure of a steel box girder segment inner support hoisting device of the present invention;

[0018] Figure 4 This is a schematic diagram of the assembly three-dimensional structure of the upper and lower splints in a steel box girder segment internal support hoisting device of the utility model;

[0019] In the figure: 1. Steel box girder; 2. Internal support structure; 3. Rotating shaft; 4. Protective plate; 5. Telescopic rod; 6. Fixed plate; 7. Upper splint; 8. Lower splint; 9. Through groove; 10. Pull rope; 11. Fixed pulley; 12. First connecting end; 13. Second connecting end; 14. Lifting rope. DETAILED DESCRIPTION

[0020] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0021] See also Figures 1 to 4 The utility model provides a technical solution: a steel box girder segment internal support lifting device, comprising an internal support structure 2 installed in the steel box girder 1 and a lifting structure installed on the side of the steel box girder 1, the internal support structure is a Y-shaped structure, the two adjacent internal support structures are 180°, a protective plate 4 is installed between the internal support structure and the steel box girder 1, the lifting structure comprises a lifting rope 14, an upper splint 7 and a lower splint 8, two pull ropes 10 are installed between the upper splint 7 and the lower splint 8, one end of the pull rope 10 corresponds to the lifting rope 14, and a steering structure is installed on the lower side of the lower splint 8, and the steering structure corresponds to the pull rope 10.

[0022] In this embodiment, the internal support structure includes a rotating shaft 3, and a telescopic rod 5 is installed on the circumferential side of the rotating shaft 3. One end of the telescopic rod 5 corresponds to the protective plate 4. The rotating shaft 3 is rotatably connected to the telescopic rod 5. A fixed plate 6 is fixed to the end of the telescopic rod 5. The fixed plate 6 is fixedly connected to the protective plate 4. The protective plate 4 is a C-shaped structure, and multiple protective plates 4 are respectively in contact with the upper and lower sides of the steel box girder 1.

[0023] Specifically, the length of the telescopic rod 5 can be extended so that the protection plate 4 contacts the fixed plate 6, and then the protection plate 4 and the fixed plate 6 are fixed by bolts. A triangular support can be formed in the steel box girder 1 through the telescopic rod 5 to ensure the stability of the steel box girder 1 and prevent deformation of the steel box girder 1.

[0024] The two pull ropes 10 are respectively located on both sides of the upper splint 7 and the lower splint 8. The pull rope 10 includes three first connection ends 12 and one second connection end 13. The first connection end 12 is fixedly connected to the upper splint 7, and the second connection end 13 is fixedly connected to the suspension rope 14. The steering structure includes a fixed pulley 11, which rotates and cooperates with the bottom of the lower splint 8. The fixed pulley 11 corresponds to the second connection end 13. A through groove 9 is opened in the lower splint 8, and the through groove 9 corresponds to the pull rope 10.

[0025] Specifically, when lifting the steel box girder 1, the lifting rope 14 is pulled upward, so that the lifting rope 14 pulls the pull rope 10, thereby driving the entire lower clamping plate 8 to move upward, and the upward pulling force is deflected through the fixed pulley 11, and the upper clamping plate 7 can be pulled downward through the first connecting end 12, thereby ensuring the stability of the clamping, and avoiding directly pulling the top plate of the steel box girder 1 upward, preventing the top plate of the steel box girder 1 from deforming.

[0026] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A steel box girder segment internal support hoisting device, comprising an internal support structure (2) installed in the steel box girder (1) and a hoisting structure installed on the peripheral side of the steel box girder (1), characterized in that: The inner support structure is a Y-shaped structure, and two adjacent inner support structures are 180 degrees apart. A protective plate (4) is installed between the inner support structure and the steel box girder (1). The lifting structure includes a lifting rope (14), an upper splint (7) and a lower splint (8). Two pull ropes (10) are installed between the upper splint (7) and the lower splint (8), and one end of the pull rope (10) corresponds to the lifting rope (14). A steering structure is installed on the lower side of the lower splint (8), and the steering structure corresponds to the pull rope (10).

2. The steel box girder segment internal support hoisting device according to claim 1, characterized in that: The inner support structure comprises a rotating shaft (3), a telescopic rod (5) is installed on the circumference of the rotating shaft (3), and one end of the telescopic rod (5) corresponds to the protective plate (4).

3. The steel box girder segment internal support hoisting device according to claim 2, characterized in that: The rotating shaft (3) is rotatably connected to the telescopic rod (5); a fixing plate (6) is fixed to the end of the telescopic rod (5); and the fixing plate (6) is fixedly connected to the protective plate (4).

4. The steel box girder segment internal support hoisting device according to claim 1, characterized in that: The protection plate (4) is a C-shaped structure, and a plurality of protection plates (4) are in contact with the upper and lower sides of the steel box beam (1) respectively.

5. The steel box girder segment internal support hoisting device according to claim 1, characterized in that: The two pull ropes (10) are respectively located on both sides of the upper clamping plate (7) and the lower clamping plate (8), and the pull rope (10) includes three first connection ends (12) and one second connection end (13).

6. The steel box girder segment internal support hoisting device according to claim 5, characterized in that: The first connecting end (12) is fixedly connected to the upper splint (7), and the second connecting end (13) is fixedly connected to the suspension rope (14).

7. The steel box girder segment internal support hoisting device according to claim 5, characterized in that: The steering structure comprises a fixed pulley (11), the fixed pulley (11) is rotatably engaged below the lower clamping plate (8), and the fixed pulley (11) corresponds to the second connecting end (13).

8. The steel box girder segment internal support hoisting device according to claim 1, characterized in that: A through slot (9) is provided in the lower clamping plate (8), and the through slot (9) corresponds to the drawstring (10).

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