Steel box girder hoisting synchronous lifting equipment

Abstract

The utility model discloses a steel box girder hoist synchronous lifting equipment belongs to steel box girder hoist synchronous lifting technical field, including the bottom plate, the outside of bottom plate is provided with the lifting frame, the upper surface fixedly connected with the hanger of lifting frame, the bottom fixedly connected with four fixed columns of lifting frame, the bottom of each fixed column is all fixedly connected with the pull ring, the below of each fixed column all is provided with the receiving column, the outer surface all fixedly connected with four limit frames of each receiving column, the inner wall all pivotally connected with the clamping hook of each limit frame, the upper surface all fixedly connected with the steel wire rope of each clamping hook. This steel box girder hoist synchronous lifting equipment, through setting up the lifting frame, has simplified the hook fixed operation, need not the complicated manual fixed step, through the linkage design of fixed column, receiving column and steel wire rope, when the lifting frame is forced to rise, the steel wire rope will pull the clamping hook and rotate around the limit frame, make the clamping hook automatic buckling the place of steel box girder's hanging, and the installation process is convenient and efficient.

Description

Technical Field

[0001] This utility model belongs to the field of synchronous lifting technology for steel box girders, and particularly relates to a synchronous lifting device for steel box girders. Background Technology

[0002] Synchronous lifting of steel box girders is a technical method used in bridge construction, typically for the steel structure construction of large bridges. Its main purpose is to keep the steel box girder stable and reach the predetermined design position during the lifting process by synchronously controlling the lifting system of multiple lifting points. This method can improve the lifting accuracy and reduce the risks in construction, and is particularly common in the construction of long-span bridges and complex structures.

[0003] Currently, in actual use, existing synchronous lifting equipment for steel box girders usually requires the hooks of the lifting equipment to be hung on the hanging point of the steel box girder and then fixed before lifting. However, the method of fixing the hooks is relatively troublesome, which affects the installation and disassembly during lifting. Furthermore, if the fixing is not secure, it will increase the risk.

[0004] To address these issues, we propose a synchronous lifting device for steel box girders. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the hook fixing method in the prior art is relatively troublesome, and to propose a synchronous lifting device for steel box girder hoisting.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A synchronous lifting device for steel box girders includes a base plate, a lifting frame on the outer side of the base plate, a hanging bracket fixedly connected to the upper surface of the lifting frame, four fixed columns fixedly connected to the bottom surface of the lifting frame, a pull ring fixedly connected to the bottom end of each fixed column, a receiving column below each fixed column, four limiting frames fixedly connected to the outer surface of each receiving column, a hook rotatably connected to the inner wall of each limiting frame, a wire rope fixedly connected to the upper surface of each hook, and a wire rope fixedly connected to the outer surface of the pull ring at the end away from the hook. Six connecting columns are fixedly connected to the bottom surface of each pull ring, a top ring is fixedly connected to the outer surface of the six connecting columns, the inner wall of each top ring is slidably connected to the outer surface of the receiving column, and a retaining ring is fixedly connected to the top of each receiving column.

[0008] Preferably, the front and back of the base plate are fixedly connected to fixing blocks, and each fixing block has two positioning holes on its upper surface.

[0009] Preferably, a first reinforcing block is fixedly connected to the upper surface of each of the fixed blocks, and the bottom surface of each first reinforcing block is fixedly connected to the upper surface of the base plate.

[0010] Preferably, the upper surface of the base plate is fixedly connected to the crane body, and the outer surface of the crane body is in contact with the inner wall of the hanger.

[0011] Preferably, the crane body has a retaining frame inside, and the outer surface of the retaining frame is rotatably connected to the inner wall of the crane body.

[0012] Preferably, the inner wall of the retaining frame is threaded with bolts, and the outer surface of the bolts is threadedly connected to the inner wall of the crane body.

[0013] Preferably, the outer surface of the hanger is fixedly connected with six second reinforcing blocks, and the bottom surface of each second reinforcing block is fixedly connected to the upper surface of the lifting frame.

[0014] In summary, the technical effects and advantages of this utility model are as follows:

[0015] By setting up a lifting frame, the hook fixing operation is simplified, eliminating the need for cumbersome manual fixing steps. Through the linkage design of the fixing column, the supporting column and the wire rope, when the lifting frame is lifted under force, the wire rope will pull the hook to rotate around the limit frame, so that the hook will automatically lock the hanging point of the steel box girder. The installation process is convenient and efficient. When disassembling, only the lifting force needs to be released, and the hook can be reset under its own weight. This greatly shortens the installation and disassembly time during hoisting and improves construction efficiency.

[0016] By setting a top ring, which slides in conjunction with the supporting column, and with the limiting effect of the retaining ring, the hook can maintain a stable clamping of the steel box girder at the hanging point during hoisting. At the same time, the four fixed columns and the corresponding hooks form a multi-point fixing structure, which disperses the hoisting stress, avoids the problem of easy loosening of single-point fixing, reduces the safety hazards caused by insecure fixing, and ensures the stability and reliability of hoisting operations. The retaining ring and the top ring can contact each other when the hook automatically clamps the hanging point of the steel box girder, which can further increase the stability. Moreover, under the action of upward and downward pulling forces, it can form a situation where the hook becomes tighter and tighter, so that the hook will not separate during lifting. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the base plate of this utility model;

[0018] Figure 2 This is a right-side three-dimensional structural schematic diagram of the lifting frame of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram of the fixed column of this utility model;

[0020] Figure 4 This is a three-dimensional cross-sectional structural diagram of the pull ring of this utility model.

[0021] In the diagram: 1. Base plate; 2. Lifting frame; 3. Hanging frame; 4. Crane body; 5. Fixing block; 6. Positioning hole; 7. First reinforcing block; 8. Second reinforcing block; 9. Stop frame; 10. Bolt; 11. Fixing column; 12. Pull ring; 13. Support column; 14. Limiting frame; 15. Hook; 16. Wire rope; 17. Retaining ring; 18. Top ring; 19. Connecting column. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 A synchronous lifting device for steel box girder hoisting includes a base plate 1, a lifting frame 2 on the outer side of the base plate 1, a hanging frame 3 fixedly connected to the upper surface of the lifting frame 2, and fixing blocks 5 fixedly connected to both the front and back of the base plate 1. Each fixing block 5 has two positioning holes 6 on its upper surface. The fixing blocks 5 can provide additional force support points for the base plate 1, enhancing the connection stability between the base plate 1 and the external foundation or other connecting components. The positioning holes 6 are designed to facilitate precise positioning during equipment installation. By inserting positioning pins and other components, the base plate 1 can be quickly and accurately fixed in the predetermined position, preventing displacement of the equipment during hoisting operations, ensuring the accuracy and safety of hoisting, and thus ensuring the smooth progress of the entire synchronous lifting operation of the steel box girder.

[0024] The bottom surface of the lifting frame 2 is fixedly connected with four fixed columns 11. Each fixed column 11 is fixedly connected with a pull ring 12 at its bottom end. Each fixed column 11 is provided with a support column 13 below it. Each fixed block 5 is fixedly connected with a first reinforcing block 7 on its upper surface. The bottom surface of each first reinforcing block 7 is fixedly connected to the upper surface of the base plate 1. The presence of the first reinforcing block 7 further strengthens the connection strength between the fixed block 5 and the base plate 1. When the equipment is hoisted, the fixed block 5 will bear a large amount of tension and pressure. The first reinforcing block 7, through double fixation with the fixed block 5 and the base plate 1, can effectively disperse the force on the fixed block 5, prevent the connection between the fixed block 5 and the base plate 1 from loosening or breaking, and greatly improve the overall structural stability and load-bearing capacity of the equipment.

[0025] Each supporting column 13 has four limiting frames 14 fixedly connected to its outer surface. Each limiting frame 14 has a hook 15 rotatably connected to its inner wall. The upper surface of the base plate 1 is fixedly connected to the crane body 4. The outer surface of the crane body 4 is in contact with the inner wall of the hanger 3. The crane body 4 is the core component for the equipment to realize the lifting function. Fixing it to the base plate 1 can ensure its stability during operation. The outer surface of the crane body 4 is in contact with the inner wall of the hanger 3 because the connecting hook at the bottom of the crane body 4 is in contact with it. The hanger 3 can play a certain limiting and supporting role for the crane body 4, making the crane body 4 more stable during operation and reducing swaying. This ensures the synchronization and safety during the steel box girder lifting process and improves the efficiency and quality of the lifting operation.

[0026] Each hook 15 has a steel wire rope 16 fixedly connected to its upper surface. The end of each steel wire rope 16 away from the hook 15 is fixedly connected to the outer surface of the pull ring 12. The crane body 4 is equipped with a baffle 9 inside. The outer surface of the baffle 9 is rotatably connected to the inner wall of the crane body 4. The baffle 9 can be rotated and adjusted according to actual operation requirements. The connecting hook at the bottom of the crane body 4 can be closed by the baffle 9 to prevent separation.

[0027] Each pull ring 12 has six connecting posts 19 fixedly connected to its bottom surface. The outer surfaces of the six connecting posts 19 are all fixedly connected to a top ring 18. The inner wall of the stop 9 is threaded with bolts 10. The outer surface of the bolts 10 is threaded with the inner wall of the crane body 4. The bolts 10 enable the stop 9 and the crane body 4 to be detachably fixed. When it is necessary to fix the position of the stop 9, tightening the bolts 10 can firmly fix the stop 9 to the crane body 4, preventing it from rotating randomly during operation and ensuring the stability of the equipment operation. When it is necessary to rotate the stop 9, simply loosen the bolts 10. The operation is simple and convenient, bringing great convenience to the maintenance and use of the equipment.

[0028] The inner wall of each top ring 18 is slidably connected to the outer surface of the support column 13. A retaining ring 17 is fixedly connected to the top of each support column 13. Six second reinforcing blocks 8 are fixedly connected to the outer surface of the hanger 3. The bottom surface of each second reinforcing block 8 is fixedly connected to the upper surface of the lifting frame 2. The second reinforcing blocks 8 can effectively enhance the connection strength between the hanger 3 and the lifting frame 2. During the equipment hoisting process, the hanger 3 will bear huge tensile forces from the crane body 4 and the steel box girder. By increasing the connection area between the hanger 3 and the lifting frame 2, the second reinforcing blocks 8 distribute the force on the hanger 3, prevent the connection between the hanger 3 and the lifting frame 2 from being damaged due to excessive force, ensure the stability of the connection between the hanger 3 and the lifting frame 2, and thus ensure the safe and reliable operation of the entire equipment during the hoisting operation.

[0029] The working principle of this utility model is as follows: In use, the operator first secures the crane body 4 to the external power source. Then, the crane body 4 is activated, allowing the ropes on it to descend, which in turn lowers the lifting frame 2. The hook 15 is then aligned with the pre-installed reinforcing bars during the fabrication of the steel box girder. The crane body 4 is then raised, and the lifting frame 2 begins to rise. Simultaneously, the fixing column 11 rises, and the pull ring 12 pulls the hook 15 via the wire rope 16. The hook 15 rotates within the limiting frame 14 until it automatically engages with the reinforcing bars of the steel box girder. Furthermore, as the hook 15 rotates, one end of it contacts and seals against the groove corresponding to the bottom surface of the limiting frame 14, ensuring the reinforcing bars are positioned between the hook 15 and the limiting frame 14. Meanwhile, the top ring 18 slides on the receiving column 13. After the hook 15 rotates to the designated position, the top ring 18 will also contact the retaining ring 17, thereby cooperating with the limiting of the retaining ring 17 to maintain the stable clamping of the hook 15. As the crane body 4 continues to rise, the steel box girder is lifted smoothly, realizing the synchronous lifting of the steel box girder. During the lifting process, the top ring 18 and the retaining ring 17 can also form a situation of tightening and close contact under the action of upward and downward forces, so that the hook 15 will not separate during lifting. The multi-point fixing structure formed by the four fixed columns 11 and the corresponding hooks 15 effectively disperses the lifting stress and ensures the stability and safety of the lifting operation. After the lifting is completed, the crane body 4 is controlled to descend, releasing the lifting force. The hook 15 resets under its own weight, which is convenient for disassembly.

[0030] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0032] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A synchronous lifting device for steel box girder hoisting, comprising a base plate (1), characterized in that: A lifting frame (2) is provided on the outer side of the base plate (1). A hanging bracket (3) is fixedly connected to the upper surface of the lifting frame (2). Four fixing posts (11) are fixedly connected to the bottom surface of the lifting frame (2). A pull ring (12) is fixedly connected to the bottom end of each fixing post (11). A receiving post (13) is provided below each fixing post (11). Four limiting frames (14) are fixedly connected to the outer surface of each receiving post (13). A hook (15) is rotatably connected to the inner wall of each limiting frame (14). Each hook (15) has a steel wire rope (16) fixedly connected to its upper surface. The end of each steel wire rope (16) away from the hook (15) is fixedly connected to the outer surface of the pull ring (12). Each pull ring (12) has six connecting posts (19) fixedly connected to its bottom surface. The outer surfaces of the six connecting posts (19) are all fixedly connected to a top ring (18). The inner wall of each top ring (18) is slidably connected to the outer surface of the receiving post (13). Each receiving post (13) has a retaining ring (17) fixedly connected to its top end.

2. The synchronous lifting equipment for steel box girder hoisting according to claim 1, characterized in that: The base plate (1) is fixedly connected to both the front and back sides with fixing blocks (5), and each fixing block (5) has two positioning holes (6) on its upper surface.

3. The synchronous lifting equipment for steel box girder hoisting according to claim 2, characterized in that: Each of the fixed blocks (5) has a first reinforcing block (7) fixedly connected to its upper surface, and the bottom surface of each of the first reinforcing blocks (7) is fixedly connected to the upper surface of the base plate (1).

4. The synchronous lifting equipment for steel box girder hoisting according to claim 1, characterized in that: The upper surface of the base plate (1) is fixedly connected to the crane body (4), and the outer surface of the crane body (4) is in contact with the inner wall of the hanger (3).

5. The synchronous lifting equipment for steel box girder hoisting according to claim 4, characterized in that: The crane body (4) is provided with a baffle (9) inside, and the outer surface of the baffle (9) is rotatably connected to the inner wall of the crane body (4).

6. The synchronous lifting equipment for steel box girder hoisting according to claim 5, characterized in that: The inner wall of the retainer (9) is threaded with a bolt (10), and the outer surface of the bolt (10) is threaded with the inner wall of the crane body (4).

7. The synchronous lifting equipment for steel box girder hoisting according to claim 1, characterized in that: The outer surface of the hanger (3) is fixedly connected with six second reinforcing blocks (8), and the bottom surface of each second reinforcing block (8) is fixedly connected to the upper surface of the lifting frame (2).

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