Steel structure lifting lug

Abstract

The utility model discloses a steel structure lifting lug which comprises two pieces of connecting steel, four lifting lug bodies are arranged outside the connecting steel, a fixed clamp and a sliding clamp are arranged between the two pieces of connecting steel, and I-shaped steel is clamped between the fixed clamp and the sliding clamp. Through cooperation of the connecting steel, the lifting lug body, the fixed clamp, the sliding clamp and the I-shaped steel, the two connecting steel can be directly lifted through the lifting lug, when the I-shaped steel is lifted, the fixed clamp can be tightly attached to the I-shaped steel, then the sliding clamp is driven by the transmission rod to be tightly attached to the other face of the I-shaped steel, and the I-shaped steel can be lifted; the number of the fixed clamps and the number of the sliding clamps are both three, three pieces of I-shaped steel can be hoisted at the same time, and disassembly and assembly are the same at the same speed and in the same step no matter one piece of I-shaped steel or three pieces of I-shaped steel are hoisted, so that the hoisting efficiency can be improved; the problem that the lifting efficiency of a welding-free detachable lifting lug is far lower than that of a conventional welding lifting lug is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting lugs, in particular to a steel structure lifting lug. Background Technique

[0002] A lifting lug is a stress-bearing member installed on equipment for lifting. It is an important connecting component in equipment hoisting and is directly related to the safety of large equipment hoisting. A lifting lug usually consists of two connecting holes and a transverse connecting piece. The connecting holes are used to connect bolts or other connecting pieces, while the transverse connecting piece is used to bear the external force, so that the lifting lug can be firmly connected to the component. The design and installation of the lifting lug need to follow certain specifications and precautions. For example, the lifting lug and the connecting piece should be on the same connecting stress center, and it is not allowed to be twisted or installed staggeredly, and the lifting lug should not be impacted or hammered under no-load and load conditions. The lifting lug is usually made of carbon steel, alloy steel or stainless steel, and its material and surface treatment have an important impact on the bearing capacity and corrosion resistance of the lifting lug. At the same time, special attention should be paid to the installation, use, inspection and quality control of the lifting lug to ensure its quality and safety.

[0003] In order to facilitate the rapid lifting of steel, conventional lifting lugs are usually directly welded to the outer surface of the steel. After the steel is installed, the lifting lugs are removed, which will waste a large number of lifting lugs. Therefore, in the existing technology, there are already lifting lugs that can be used to hoist and disassemble steel. However, both the common ones and the detachable ones on the market have a problem, that is, they can only lift a single piece of steel through the lifting lug. After hoisting, the lifting lug needs to be disassembled and installed again to hoist other single pieces of steel, resulting in much lower efficiency than conventional welded lifting lugs. To solve this technical problem, the utility model proposes a steel structure lifting lug. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide a steel structure lifting lug, which can effectively solve the problems mentioned in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A steel structure lifting lug includes two connecting steels. Four lifting lug bodies are arranged on the outside of the connecting steels. A fixed clamp and a sliding clamp are arranged between the two connecting steels, and an I-beam is clamped between the fixed clamp and the sliding clamp.

[0007] Preferably, a reserved groove is opened on the inner side of the connecting steel, a through hole is opened on the inner side of the reserved groove, an upper fixing plate and a lower fixing plate are tightly contacted with the outer surface of the reserved groove, and a first threaded rod is fixedly connected to the inner wall of the upper fixing plate. The first threaded rod penetrates through the through hole and the lower fixing plate.

[0008] Preferably, a nut is threadedly connected to the outer surface of the first threaded rod on the lower fixing plate, and a cap nut is threadedly connected to the outer surface of the first threaded rod below the nut. Shock-absorbing sheets are provided between the nut and the lower fixing plate and between the nut and the cap nut.

[0009] Preferably, a sliding groove is fixedly installed on the outer surface of the upper fixing plate, and a T-shaped groove is fixedly installed on the bottom surface of the lower fixing plate. The bottom surface of the T-shaped groove is in close contact with the outer surface of the upper fixing plate, and the outer surface of the T-shaped groove is slidably connected to the outer surface of the sliding groove.

[0010] Preferably, the outer surface of the upper fixing plate is fixedly installed with the outer surface of the lifting lug body, the outer surface of the lifting lug body is fixedly installed with an extension plate, and the outer surface of the extension plate is fixedly installed with the outer surface of the upper fixing plate.

[0011] Preferably, a directional groove is fixedly installed on the outer surface of the connecting steel, the outer surface of the directional groove is fixedly installed with the outer surface of the fixing clamp, and the outer surface of the fixing clamp is fixedly installed with the outer surface of the connecting steel.

[0012] Preferably, a chute is formed inside the sliding clamp, the outer surface of the chute is slidably connected to the outer surface of the directional groove, a transmission rod is rotatably connected to the inner wall of the fixing clamp, and the outer surface of the transmission rod is threadedly connected to the inner wall of the sliding clamp.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the utility model, through the cooperation between the connecting steel, the lifting lug body, the fixing clamp, the sliding clamp and the I-shaped steel, the two connecting steels can be directly lifted by the lifting lug. When hoisting the I-shaped steel, the fixing clamp can be first attached closely to the I-shaped steel, and then the sliding clamp is driven by the transmission rod to be attached closely to the other side of the I-shaped steel, so that it can be hoisted. And the number of the fixing clamps and the sliding clamps is three, and three I-shaped steels can be hoisted at the same time. And whether hoisting one I-shaped steel or three I-shaped steels, the disassembly and assembly speed and steps are the same, so as to improve the hoisting efficiency and solve the problem that the hoisting efficiency of the detachable and assembled lifting lug without welding is much lower than that of the conventional welded lifting lug.

[0015] In the utility model, through the cooperation between the first threaded rod, the nut, the cap nut and the shock-absorbing sheet, the shock-absorbing sheet can reduce the loosening speed of the cap nut and the nut from the first threaded rod. Even if loosening occurs, before the cap nut falls off, the device is still in a stable state. The color of the cap nut is green and the color of the nut is red. When the construction personnel look up at the device from below and cannot clearly observe the red color, it means that the nut has not fallen off. When the red color can be clearly observed, it means that the device needs to be suspended for use and maintained. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural schematic diagram of a steel structure lifting lug of the present utility model;

[0017] Figure 2 This is the exploded structural schematic diagram of the upper fixing plate and the lower fixing plate of a steel structure lifting lug of the present utility model;

[0018] Figure 3 This is the overall structural schematic diagram of the upper fixing plate and the lower fixing plate of a steel structure lifting lug of the present utility model;

[0019] Figure 4 This is the schematic diagram of the clamping state of the sliding clamp and the fixed clamp of a steel structure lifting lug of the present utility model;

[0020] Figure 5 This is the schematic diagram of the loosened state of the sliding clamp and the fixed clamp of a steel structure lifting lug of the present utility model.

[0021] In the figure: 1, connecting steel; 2, lifting lug body; 3, fixed clamp; 4, sliding clamp; 5, I-beam; 6, reserved groove; 7, through hole; 8, upper fixing plate; 9, lower fixing plate; 10, first threaded rod; 11, nut; 12, cap nut; 13, shock-proof sheet; 14, sliding groove; 15, T-shaped groove; 16, extension plate; 17, orientation groove; 18, chute; 19, transmission rod. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] As Figures 1-5 shown, a steel structure lifting lug includes two connecting steels 1. Four lifting lug bodies 2 are arranged outside the connecting steels 1. A fixed clamp 3 and a sliding clamp 4 are arranged between the two connecting steels 1. An I-beam 5 is clamped between the fixed clamp 3 and the sliding clamp 4. The two connecting steels 1 can be directly lifted by the lifting lug. When hoisting the I-beam 5, the fixed clamp 3 can be first closely attached to the I-beam 5, and then the sliding clamp 4 is driven by the transmission rod 19 to be closely attached to the other surface of the I-beam 5, so that it can be hoisted. Moreover, the number of both the fixed clamp 3 and the sliding clamp 4 is three, and three I-beams 5 can be hoisted simultaneously. And whether hoisting one I-beam 5 or three I-beams 5, their disassembly and assembly speeds and steps are the same, thereby increasing the hoisting efficiency and solving the problem that the hoisting efficiency of a detachable and assembled lifting lug that can avoid welding is much lower than that of a conventional welded lifting lug.

[0024] A reserved groove 6 is provided on the inner side of the connecting steel 1, and a through hole 7 is provided on the inner side of the reserved groove 6. The outer surface of the reserved groove 6 is in contact with and fastened with an upper fixing plate 8 and a lower fixing plate 9. A first threaded rod 10 is fixedly connected to the inner wall of the upper fixing plate 8. The first threaded rod 10 passes through the through hole 7 and the lower fixing plate 9. The reserved groove 6 enables the upper fixing plate 8 and the lower fixing plate 9 to be embedded in the inner side of the connecting steel 1. When the upper fixing plate 8 is closely attached to the reserved groove 6, the first threaded rod 10 can be inserted into the through hole 7 and the inner wall of the lower fixing plate 9, so that the upper fixing plate 8 and the lower fixing plate 9 will not slide off the connecting steel 1 in any horizontal direction, and thus the distance between the two connecting steels 1 will not change, making the equipment more stable during use.

[0025] A nut 11 is threadedly connected to the outer surface of the first threaded rod 10 located below the lower fixing plate 9, and a locknut 12 is threadedly connected to the outer surface of the first threaded rod 10 below the nut 11. Shock-absorbing washers 13 are provided between the nut 11 and the lower fixing plate 9 and between the nut 11 and the locknut 12. The shock-absorbing washers 13 can reduce the speed at which the locknut 12 and the nut 11 become loose from the first threaded rod 10. Even if loosening occurs, before the locknut 12 falls off, the equipment remains in a stable state. The color of the locknut 12 is green, and the color of the nut 11 is red. When construction workers look up at the equipment from below and cannot clearly observe the red color, it means that the nut 11 has not fallen off. When the red color can be clearly observed, it means that the equipment needs to be suspended from use and maintained.

[0026] A sliding groove 14 is fixedly installed on the outer surface of the upper fixing plate 8, and a T-shaped groove 15 is fixedly installed on the bottom surface of the lower fixing plate 9. The bottom surface of the T-shaped groove 15 is in close contact with the outer surface of the upper fixing plate 8. The outer surface of the T-shaped groove 15 is slidably connected to the outer surface of the sliding groove 14. When the upper fixing plate 8 and the lower fixing plate 9 are installed on the reserved groove 6 of the connecting steel 1, the sliding groove 14 and the T-shaped groove 15 can be attached to each other. After attachment, the upper fixing plate 8 and the lower fixing plate 9 will not move horizontally. The cooperation between the reserved groove 6, the T-shaped groove 15 and the sliding groove 14 can prevent the upper fixing plate 8 and the lower fixing plate 9 from moving in any horizontal direction, making the installation between the upper top plate and the lower fixing plate 9 tighter.

[0027] The outer surface of the upper fixing plate 8 is fixedly installed with the outer surface of the lug body 2. The outer surface of the lug body 2 is fixedly installed with an extension plate 16. The outer surface of the extension plate 16 is fixedly installed with the outer surface of the upper fixing plate 8. The extension plate 16 can increase the contact area between the lug body 2 and the upper top plate, thus making the lug body 2 more firmly installed on the upper fixing plate 8.

[0028] The outer surface of the connecting steel 1 is fixedly installed with an orientation groove 17. The outer surface of the orientation groove 17 is fixedly installed with the outer surface of the fixed clamp 3, and the outer surface of the fixed clamp 3 is fixedly installed with the outer surface of the connecting steel 1. The orientation groove 17 can increase the contact surface between the fixed clamp 3 and the connecting steel 1, thereby reducing the deformation of the fixed clamp 3 on the connecting steel 1.

[0029] A sliding groove 18 is formed inside the sliding clamp 4. The outer surface of the sliding groove 18 is slidably connected to the outer surface of the orientation groove 17. A transmission rod 19 is rotatably connected to the inner wall of the fixed clamp 3, and the outer surface of the transmission rod 19 is threadedly connected to the inner wall of the sliding clamp 4. Rotating the transmission rod 19 can drive the three sliding clamps 4 to slide on the outer surface of the orientation groove 17 through the sliding groove 18, so that the three sliding clamps 4 move away from the I-beam 5. Rotating the transmission rod 19 in the reverse direction can make the three sliding clamps 4 closely adhere to the I-beam 5.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel structure lifting lug, characterized in that: The invention comprises two connecting steels (1), wherein the connecting steels (1) are provided with four lifting ear bodies (2) on the outside, a fixing clamp (3) and a sliding clamp (4) are provided between the two connecting steels (1), and an I-shaped steel (5) is clamped between the fixing clamp (3) and the sliding clamp (4).

2. A steel structure lifting lug according to claim 1, characterized in that: A reserved groove (6) is provided on the inner side of the connecting steel (1), a through hole (7) is provided on the inner side of the reserved groove (6), the outer surface of the reserved groove (6) is in tight contact with an upper fixing plate (8) and a lower fixing plate (9), a threaded rod (10) is fixedly connected to the inner wall of the upper fixing plate (8), and the threaded rod (10) passes through the through hole (7) and the lower fixing plate (9).

3. A steel structure lifting lug according to claim 2, characterized in that: The threaded rod 1 (10) is located on the outer surface of the lower fixing plate (9) and is threadedly connected to a nut (11); the threaded rod 1 (10) is located below the nut (11) and is threadedly connected to a nut (12); and a shock-absorbing plate (13) is provided between the nut (11) and the lower fixing plate (9) and between the nut (11) and the nut (12).

4. A steel structure lifting lug according to claim 2, characterized in that: The outer surface of the upper fixed plate (8) is fixedly mounted with a sliding groove (14), and the bottom surface of the lower fixed plate (9) is fixedly mounted with a T-shaped groove (15), the bottom surface of the T-shaped groove (15) is in close contact with the outer surface of the upper fixed plate (8), and the outer surface of the T-shaped groove (15) is in sliding connection with the outer surface of the sliding groove (14).

5. A steel structure lifting eye according to claim 2, characterized in that: The outer surface of the upper fixing plate (8) is fixedly mounted to the outer surface of the lifting ear body (2), an expansion plate (16) is fixedly mounted to the outer surface of the lifting ear body (2), and the outer surface of the expansion plate (16) is fixedly mounted to the outer surface of the upper fixing plate (8).

6. A steel structure lifting lug according to claim 1, characterized in that: The outer surface of the connecting steel (1) is fixedly mounted with an orientation groove (17), the outer surface of the orientation groove (17) is fixedly mounted with the outer surface of the fixing clamp (3), and the outer surface of the fixing clamp (3) is fixedly mounted with the outer surface of the connecting steel (1).

7. A steel structure lifting eye according to claim 6, characterized in that: A slide groove (18) is provided on the inner side of the sliding clamp (4), and the outer surface of the slide groove (18) is slidably connected to the outer surface of the directional groove (17). The inner wall of the fixed clamp (3) is rotatably connected to a transmission rod (19), and the outer surface of the transmission rod (19) is threadedly connected to the inner wall of the sliding clamp (4).

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