Rapid hoisting device for super-long steel member

Abstract

The utility model discloses a quick hoisting device for an ultra-long steel member, which relates to the technical field of underground engineering construction and comprises two groups of steel plate clamps and H-shaped steel, the two groups of steel plate clamps are positioned on two sides of the H-shaped steel and are connected with each other through a plurality of groups of through bolts, and the H-shaped steel is arranged in the H-shaped steel. One side of each group of through bolts is in threaded connection with a reinforcing nut, the reinforcing nuts are located on one side of one group of steel plate clamps, limiting steel plates located at the two ends of each group of H-shaped steel are fixed to the inner sides of the two groups of steel plate clamps, and adjusting gaskets are arranged on the end faces, close to the H-shaped steel, of each group of limiting steel plates. The utility model effectively solves the problems that the super-long steel member is difficult to hoist and is easy to bend and deform in the construction process, and by combining three groups of super-long H-shaped steel into a whole, the overall rigidity is obviously improved, the slenderness ratio is reduced, and the stability of the H-shaped steel in the hoisting and inserting process is ensured, so that the construction quality is ensured, and the construction cost is reduced. And a solid foundation is laid for smooth proceeding of a project.

Description

Technical Field

[0001] This utility model relates to the field of underground engineering construction technology, specifically to a rapid lifting device for ultra-long steel components. Background Technology

[0002] With the development of urban rail transit, the number of cases where rail transit shield tunneling passes through the retaining structure of foundation pits is increasing. The retaining structure of deep and large foundation pits often adopts a combination of underground continuous walls or bored piles and cement-soil mixing walls. Extra-long steel sections are inserted into the cement-soil mixing walls to enhance the rigidity of the retaining structure.

[0003] However, due to the large depth of the cement-soil mixing wall, the length of the H-beams used is much longer than that of normal steel sections, resulting in a large slenderness ratio. When lifting a single H-beam, the rigidity is insufficient, and vertical deviation or bending deformation is prone to occur during the insertion process, affecting the construction quality and subsequent steel section extraction process. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a rapid lifting device for ultra-long steel components, so as to solve the technical problems in the prior art where the rigidity of a single H-beam is insufficient when lifting it, and the verticality deviation or bending deformation is easy to occur during the insertion process, which affects the construction quality and the subsequent steel section extraction process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rapid lifting device for ultra-long steel components, comprising two sets of steel plate clamps and an H-beam, wherein the two sets of steel plate clamps are located on both sides of the H-beam, and the two sets of steel plate clamps are interconnected by multiple sets of through bolts;

[0006] The steel plate clamps are made of Q355B grade steel, and the through bolts are high-strength bolts of grade 8.8 or above;

[0007] Each set of through bolts has a reinforcing nut threaded on one side, and the reinforcing nut is located on one side of one set of steel plate clamps. Both sets of steel plate clamps have limiting steel plates fixed inside, located at both ends of each set of H-beams. The limiting steel plates and steel plate clamps are welded and fixedly connected, and the limiting steel plates have rectangular holes inside that mate with the through bolts.

[0008] Each set of limiting steel plates and H-beams is provided with adjusting shims at the end faces that are close to each other, and the adjusting shims serve to adjust dimensional deviations.

[0009] By adopting the above technical solutions, the problems of difficulty in lifting ultra-long steel components and easy bending and deformation during construction were effectively solved. By combining three sets of ultra-long H-beams into a whole, the overall rigidity was significantly improved, the slenderness ratio was reduced, and the stability of the H-beams during lifting and placement was ensured, thereby guaranteeing the construction quality and laying a solid foundation for the smooth progress of the project.

[0010] Before construction, the clamping steel plates, limiting steel plates, and through bolts can accurately ensure the plane positioning of the H-beams, saving a lot of time for subsequent lifting. During lifting, since the horizontal plane positioning has been completed before lifting, only overall vertical adjustment is needed for subsequent insertion. Moreover, the lifting of a single group does not affect the overall construction progress, greatly improving construction efficiency and helping to shorten the entire project cycle. Construction can be completed with only lifting machinery, without the need for complex auxiliary equipment and cumbersome operating procedures. This environmentally friendly construction method reduces equipment investment and resource consumption on the construction site, reduces the impact on the surrounding environment, and meets the requirements of sustainable development in modern engineering construction.

[0011] Furthermore, one of the steel plate clamps has lifting lugs fixed at both ends on one side, and lifting holes are provided inside the lifting lugs. The lifting lugs and the steel plate clamps are fixedly connected by welding, and the lifting holes of the lifting lugs are circular in cross-section.

[0012] By adopting the above technical solution, a lifting hole is opened inside the lifting lug. The lifting hole has a circular cross-section. The lifting lug and the steel plate clamp are fixedly connected by welding. The welding quality is strictly tested to ensure that the lifting lug can withstand the huge tensile force during the lifting process. The position and shape of the lifting lug are optimized to facilitate connection with lifting equipment such as crane hooks.

[0013] In summary, the present invention has the following main advantages:

[0014] 1. This utility model effectively solves the problems of difficulty in lifting ultra-long steel components and easy bending and deformation during construction. By combining three sets of ultra-long H-beams into a whole, the overall rigidity is significantly improved, the slenderness ratio is reduced, and the stability of the H-beams during lifting and placement is ensured, thereby guaranteeing the construction quality and laying a solid foundation for the smooth progress of the project.

[0015] 2. Before construction, the clamping steel plate, limiting steel plate, and through bolts of this utility model can accurately ensure the plane positioning of the H-beam, saving a lot of time for subsequent lifting. During lifting, since the horizontal plane positioning has been completed before lifting, only overall vertical adjustment is needed for subsequent insertion. Moreover, the lifting of a single group does not affect the overall construction progress, greatly improving construction efficiency and helping to shorten the entire project cycle. Construction can be completed with only lifting machinery, without the need for complex auxiliary equipment and cumbersome operating procedures. This environmentally friendly construction method reduces equipment investment and resource consumption at the construction site, reduces the impact on the surrounding environment, and meets the requirements of sustainable development in modern engineering construction. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2This is a cross-sectional view of the entire utility model;

[0018] Figure 3 This utility model Figure 2 Enlarged view of point A;

[0019] Figure 4 This is a schematic diagram showing the assembly between the lifting device and the steel profile of this utility model;

[0020] Figure 5 This utility model Figure 4 Enlarged view of point B.

[0021] In the diagram: 1. Steel plate clamp; 2. Through bolt; 3. Reinforcing nut; 4. Limiting steel plate; 5. Lifting lug; 6. H-beam; 7. Adjusting shim. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0023] The embodiments of this utility model will be described below based on its overall structure.

[0024] Example

[0025] A rapid lifting device for ultra-long steel components, such as Figure 1-4 As shown, it includes two sets of steel plate clamps 1;

[0026] Two sets of steel plate clamps 1 are symmetrically distributed on both sides of the H-beam 6. Each set of steel plate clamps 1 is made of Q355B grade steel, which has good strength and toughness. The shape of the steel plate clamps 1 is adapted to the side profile of the H-beam 6 to ensure a tight fit.

[0027] The two sets of steel plate clamps 1 are connected to each other by multiple sets of through bolts 2. The through bolts 2 are high-strength bolts of grade 8.8 or above to ensure the tightness of the connection. The through bolts 2 are evenly distributed on the steel plate clamps 1. Their number and position are optimized according to the length and stress of the H-beam 6 to ensure that the H-beam 6 is subjected to uniform constraint force during the lifting process and will not loosen or shift locally.

[0028] Each set of steel plate clamps 1 has a limiting steel plate 4 fixed on the inner side of each set of H-beams 6 at both ends. The limiting steel plate 4 and the steel plate clamps 1 are fixedly connected by welding. The welding process is strictly controlled to ensure that the weld is strong and free from defects such as porosity and cracks.

[0029] The limiting steel plate 4 has a rectangular hole inside that matches the through bolt 2. The through bolt 2 passes through the rectangular hole, which further enhances the integrity of the entire structure. The size and position of the limiting steel plate 4 are precisely designed to accurately limit the displacement of the H-beam 6 in the lateral and longitudinal directions, prevent the H-beam 6 from shifting during the lifting process, and ensure that it is always in the correct position.

[0030] Each set of through bolts 2 has a reinforcing nut 3 threadedly connected to one side, and the reinforcing nut 3 is located on one side of one set of steel plate clamps 1. When installing the lifting device, the preload of the through bolts 2 can be adjusted by rotating the reinforcing nut 3, so that the clamping force between the steel plate clamp 1 and the H-beam 6 reaches the optimal state. The reinforcing nut 3 is a high-strength nut with good self-locking performance. It can withstand huge tensile forces and vibrations during the lifting process, ensuring that the through bolts 2 will not loosen, thereby ensuring the stability of the entire lifting device.

[0031] Each set of limiting steel plates 4 and H-beams 6 is equipped with adjusting shims 7 at the end faces that are close to each other. The adjusting shims 7 can be selected and replaced according to the dimensional deviation between the H-beams 6 and the limiting steel plates 4 during actual construction.

[0032] Before construction, measure the actual size of H-beam 6 and the distance between the limiting steel plate 4. If there is a deviation, select an adjustment shim 7 of appropriate thickness for installation. The material of the adjustment shim 7 has a certain wear resistance and pressure resistance, which can stably fill the gap during the lifting process, ensure the accurate positioning of H-beam 6 in the horizontal direction, and reduce the friction and wear between H-beam 6 and limiting steel plate 4.

[0033] One of the steel plate clamps 1 has lifting lugs 5 fixed at both ends on one side. The lifting lugs 5 have lifting holes with a circular cross-section. The lifting lugs 5 and the steel plate clamps 1 are fixedly connected by welding. The welding quality is strictly tested to ensure that the lifting lugs 5 can withstand the huge tensile force during the lifting process. The position and shape of the lifting lugs 5 are optimized to facilitate connection with lifting equipment such as crane hooks.

[0034] During lifting, the crane hook is accurately inserted into the lifting hole of the lifting lug 5, and the entire lifting device and H-beam 6 are lifted through the lifting lug 5. The design of the lifting lug 5 can evenly distribute the lifting force, avoid local stress concentration, and ensure the safety and reliability of the lifting process.

[0035] At the construction site, based on the specifications and length of the H-beam 6, select the appropriate size of steel plate clamp 1, through bolt 2, reinforcing nut 3, limiting steel plate 4, adjusting shim 7, and lifting lug 5;

[0036] First, place the adjusting shims 7 on the contact surfaces of the limiting steel plate 4 and the H-beam 6 at both ends. Select an adjusting shim 7 of appropriate thickness according to the actual measured dimensional deviation to ensure that the H-beam 6 is accurately positioned in the horizontal direction.

[0037] Then, place the two sets of steel plate clamps 1 on both sides of the H-beam 6, so that the through bolts 2 pass through the corresponding holes of the steel plate clamps 1 and the limiting steel plate 4. Tighten the reinforcing nut 3 on one side of the through bolts 2, and gradually tighten the reinforcing nut 3 with a wrench. At the same time, observe the fit between the steel plate clamps 1 and the H-beam 6 to ensure that the clamping force is uniform and appropriate. Next, check the welding quality of the lifting lugs 5 to ensure that the lifting lugs 5 are firmly fixed on the steel plate clamps 1 and that the lifting holes are free from deformation and blockage.

[0038] Once the lifting equipment, such as a crane, is moved above the assembled lifting device, the crane hook is slowly lowered and accurately inserted into the lifting hole of the lifting lug 5. After the hook is fully inserted and under force, the connection between the lifting device and the H-beam 6 is checked again. After confirming that there are no errors, the crane is started to slowly lift the hook.

[0039] During the lifting process, the H-beam 6 is firmly clamped due to the coordinated action of the steel plate clamp 1, the through bolt 2, the limiting steel plate 4, and the reinforcing nut 3, and will not shake, shift, or bend. At the same time, the adjusting shim 7 ensures the stability of the H-beam 6 in the horizontal direction, and the lifting lug 5 transmits the lifting force evenly, ensuring that the entire lifting process is safe and stable. After the H-beam 6 is lifted to a certain height, it is moved to the designated position by the operation control of the crane according to the construction requirements, ready for the insertion operation.

[0040] Specifically, two sets of cranes are used for simultaneous lifting. Multiple sets of the rapid lifting devices of this application are sequentially installed on the outside of each set of H-beams 6. One set of cranes is connected to the lifting lugs 5 of the upper rapid lifting device, and the other set of cranes is connected to the lifting lugs 5 of the lower rapid lifting device. The two sets of cranes work together to ensure the lifting effect of the H-beams 6.

[0041] When H-beam 6 is inserted into the predetermined position such as cement-soil mixing wall, the overall rigidity of the lifting device is significantly improved, and H-beam 6 can maintain good verticality, effectively avoiding the problem of verticality deviation during the insertion process.

[0042] Even when encountering a certain degree of resistance or external interference, the constraint system composed of components such as the steel plate clamp 1 and the through bolts 2 can ensure that the H-beam 6 will not bend or deform. After insertion, the lifting device can be temporarily retained on the H-beam 6 to provide some auxiliary support, further enhancing the stability of the H-beam 6 during construction. It can be removed when subsequent construction procedures no longer require the assistance of the lifting device. The removal process is simple and convenient; simply loosen the reinforcing nut 3 and remove the through bolts 2 to disassemble the steel plate clamp 1, the limiting steel plate 4, and other components from the H-beam 6. After cleaning, they can be reused, reducing construction costs.

[0043] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A quick lifting device for super-long steel members, comprising two groups of steel plate clamps (1) and H-shaped steel (6), characterized in that: Two groups of the steel plate clamps (1) are located on both sides of the H-shaped steel (6), and the two groups of the steel plate clamps (1) are connected to each other through a plurality of groups of through bolts (2); One side of each group of the through bolts (2) is threadedly connected with a reinforcing nut (3), and the reinforcing nut (3) is located on one side of one group of the steel plate clamps (1); the inner sides of the two groups of the steel plate clamps (1) are fixed with limiting steel plates (4) located at both ends of each group of the H-shaped steel (6).

2. The device for quick hoisting of an ultra-long steel member according to claim 1, characterized in that: The end faces of each group of the limiting steel plates (4) and the H-shaped steel (6) close to each other are all provided with adjusting washers (7), and the adjusting washers (7) play a role in adjusting the size deviation.

3. The device for quick hoisting of super-long steel members according to claim 1, characterized in that: The steel plate clamps (1) are made of Q355B grade steel, and the through bolts (2) are high-strength bolts above grade 8.

8.

4. The device for quick hoisting of super-long steel members according to claim 1, characterized in that: The limiting steel plates (4) and the steel plate clamps (1) are fixedly connected by welding, and the limiting steel plates (4) are internally provided with rectangular holes matched with the through bolts (2).

5. The device for quick hoisting of super-long steel members according to claim 1, characterized in that: Both ends of one side of one group of the steel plate clamps (1) are fixed with lifting lugs (5), and the lifting lugs (5) are internally provided with lifting holes.

6. The device for quick hoisting of an ultralong steel member according to claim 5, characterized in that: The two groups of the lifting lugs (5) and the steel plate clamps (1) are fixedly connected by welding, and the lifting hole section of the lifting lug (5) is circular.

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