Auxiliary fixing device for high-altitude butt joint of multi-curved special-shaped steel structure

By using a detachable docking auxiliary fixing device, a U-shaped frame and bolt connection, combined with BIM model customization and a rotating shaft clamping plate structure, the problems of positioning accuracy and wind resistance in the high-altitude installation of traditional irregular steel structures are solved, and high-altitude docking of multi-curved irregular steel structures is achieved at a high efficiency and low cost.

CN224514783UActive Publication Date: 2026-07-17GUANGXI CONSTR ENG GRP NO 1 CONSTR ENG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
GUANGXI CONSTR ENG GRP NO 1 CONSTR ENG
Filing Date
2025-08-01
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional high-altitude installation of irregular steel structures suffers from low positioning accuracy, poor wind resistance, and difficulty in adjustment, leading to welding stress concentration and construction delays. In particular, the operation of large hoisting equipment is restricted in narrow rural areas, and components are easily swayed by wind, making it difficult to guarantee installation accuracy.

Method used

The device employs a detachable docking auxiliary fixing device, including a U-shaped frame and bolt connections. The U-shaped frame is customized based on BIM model data, and the elongated holes provide fine-tuning margins. The bolt connection method enables quick assembly and disassembly. Combined with the rotating shaft and clamping plate structure, it ensures precise positioning and wind resistance while reducing welding stress.

Benefits of technology

It achieves high-precision high-altitude docking of multi-curved irregular steel structures with an installation deviation of ≤2mm, shortens the construction period by 40%, reduces costs by 80%, and the device is reusable, improving installation efficiency and safety.

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Abstract

The utility model provides a kind of for the auxiliary fixing device of high-altitude butt joint of multi-curved surface special-shaped steel structure, it is related to steel structure construction technology field, including first multi-curved surface special-shaped steel structure and second multi-curved surface special-shaped steel structure;Detachable butt joint auxiliary fixing device, the detachable butt joint auxiliary fixing device is arranged on the surface of first multi-curved surface special-shaped steel structure and second multi-curved surface special-shaped steel structure, the detachable butt joint auxiliary fixing device includes U-shaped jig frame, the U-shaped jig frame is connected with first multi-curved surface special-shaped steel structure, second multi-curved surface special-shaped steel structure by bolt, and the material of U-shaped jig frame is rectangular steel tube corner material, is customized based on BIM model data, the surface of U-shaped jig frame is equipped with several long holes, and the aperture of long hole is greater than the diameter of bolt No. 1, the utility model solves the problem that traditional special-shaped steel structure high-altitude installation relies on temporary spot welding fixing, the positioning deviation of multi-curved surface special-shaped steel structure high-altitude installation, welding deformation and wind load influence.
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Claims

1. An auxiliary fixing device for high-altitude butt joint of a multi-curved special-shaped steel structure, characterized in that, include: First multi-curved irregular steel structure (1) and second multi-curved irregular steel structure (2); A detachable docking auxiliary fixing device (3) is provided on the surface of the first multi-curved irregular steel structure (1) and the second multi-curved irregular steel structure (2). The detachable docking auxiliary fixing device (3) includes a U-shaped frame (301). The U-shaped frame (301) is connected to the first multi-curved irregular steel structure (1) and the second multi-curved irregular steel structure (2) by a number of bolts (314). The U-shaped frame (301) is made of rectangular steel pipe scrap and is customized based on BIM model data. A number of elongated holes (302) are opened on the surface of the U-shaped frame (301). The size of the elongated holes (302) is one size larger than the size of the bolts (314). Nuts (316) are threaded on the bolts (314).

2. The auxiliary fixing device for high-altitude butt joint of multi-curved surface special-shaped steel structure according to claim 1, characterized in that, The detachable docking auxiliary fixing device (3) also includes two rotating shafts (304), which are fixedly connected to the U-shaped frame (301). The rotating shafts (304) are rotatably connected to a rotating plate (305) on their arc surfaces. The inner wall of the rotating plate (305) is threaded with a lead screw (310). One end of the lead screw (310) is fixedly connected to a first throttle (309), and the other end of the lead screw (310) is fixedly connected to a clamping plate (311). A rubber pad (312) is fixedly connected to the surface of the clamping plate (311).

3. The auxiliary fixing device for high-altitude butt joint of multi-curved surface special-shaped steel structure according to claim 2, characterized in that, The inner wall of the rotating plate (305) is slidably connected with a fixing pin (306). The surface of the U-shaped frame (301) has two fixing holes (303). The size of the fixing pin (306) is adapted to the size of the fixing hole (303). One end of the fixing pin (306) is fixedly connected to a pull block (308). A spring (307) is sleeved on the arc surface of the fixing pin (306). One end of the spring (307) is fixedly connected to the pull block (308), and the other end of the spring (307) is fixedly connected to the rotating plate (305).

4. The auxiliary fixing device for high-altitude butt joint of multi-curved surface special-shaped steel structure according to claim 1, characterized in that, The surfaces of the first multi-curved irregular steel structure (1) and the second multi-curved irregular steel structure (2) are provided with a number of gourd-shaped holes (320). The two ends of the gourd-shaped holes (320) are small holes and large holes, respectively. The size of the small holes is adapted to the size of the bolt (314), and the size of the large holes is adapted to the size of the bolt (314) head. A rubber plug (313) is detachably installed on the inner wall of the gourd-shaped holes (320). The rubber plug (313) is pressed into the gourd-shaped holes (320) with an interference fit. The rubber plug (313) and the bolt (314) can block the gourd-shaped holes (320).

5. The auxiliary fixing device for high-altitude butt joint of multi-curved surface special-shaped steel structure according to claim 1, characterized in that, The threaded surface of the bolt (314) is fitted with a wedge-shaped washer (315), and the size of the wedge-shaped washer (315) is larger than the size of the elongated hole (302).

6. The auxiliary fixing device for high-altitude butt joint of multi-curved surface special-shaped steel structure according to claim 1, characterized in that, The surface of the U-shaped frame (301) is fixedly connected to a nitrile rubber sheet (319), and the size of the nitrile rubber sheet (319) can cover the elongated hole (302).

7. The auxiliary fixing device for high-altitude butt joint of multi-curved surface special-shaped steel structure according to claim 1, characterized in that, The surface of the nut (316) is fixedly connected with three supports (317), and the surface of the three supports (317) is fixedly connected with a second handle (318).