A high machine tool for fastening a steel structure nut

By designing a special high-speed machine for tightening nuts in steel structures, and using universal joints and fixed brackets to support electric wrenches, the problem of construction workers holding heavy wrenches has been solved. This has enabled multi-degree-of-freedom adjustment and improved safety of electric wrenches, making them suitable for complex steel structure environments.

CN224450237UActive Publication Date: 2026-07-03浙江省建设工程机械集团有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
浙江省建设工程机械集团有限公司
Filing Date
2025-07-11
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

During the installation of high-altitude steel structures, construction workers need to use electric wrenches weighing several kilograms to tens of kilograms to continuously tighten nuts, resulting in high-intensity workload and safety hazards. Furthermore, existing technology lacks support devices that facilitate the movement of electric wrenches.

Method used

Design a high-speed nut tightening machine with a steel structure. It uses a universal linkage and a fixed bracket to support the electric wrench. The electric wrench can be adjusted in multiple degrees of freedom by adjusting the bracket and linkage assembly. Combined with a pneumatic spring, it reduces the operating force. It is equipped with a shelf and a built-in power supply to improve convenience.

Benefits of technology

It enables the electric wrench to be adjusted freely in position and angle, reducing the load on construction workers, improving operating efficiency and safety, and adapting to complex steel structure environments.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a high machine special for steel structure body nut fastening, include: high machine platform, including mobile subassembly, be located on the lifting assembly of mobile subassembly and be located on the installation platform of lifting assembly, adjust support, set up on the installation platform, universal connecting rod, one end is connected on the adjust support, and the other end is equipped with fixed bolster, electric wrench, set up on the fixed bolster, can along with the angle and position change of fixed bolster and produce displacement, when using can easily adjust the position and angle of electric wrench, convenient for operator to use.
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Description

Technical Field

[0001] This utility model relates to the field of engineering machinery technology, specifically to a high-speed machine for fastening nuts on steel structures. Background Technology

[0002] In the installation of high-altitude steel structures, torsion-shear bolt connections are a crucial step. This connection method requires skilled construction personnel to ensure the strength and safety of the connection. During implementation, it is essential to strictly control the bolt preload, avoiding overtightening or loosening, thereby ensuring the stability and durability of the connection. Simultaneously, it is also crucial to inspect the quality and specifications of the bolts to ensure they meet design requirements, providing strong protection for the safety of the steel structure.

[0003] In existing technologies, construction workers must wield wrenches weighing several kilograms or even tens of kilograms to continuously tighten dozens to hundreds of nuts during the operation, resulting in extremely high work intensity. Prolonged work not only harms the workers' health but also significantly reduces construction efficiency.

[0004] Due to the complexity of some work conditions, construction workers may have to come into contact with incompletely secured steel structures, or even stand on the steel structures while working. This significantly increases safety hazards. Currently, there is a lack of technical solutions that can support the electric wrench to facilitate its movement by construction workers. Utility Model Content

[0005] To solve the above technical problems, this utility model provides a special high-powered wrench for tightening nuts on steel structures. During use, the position and angle of the electric wrench can be easily adjusted, making it convenient for operators to use.

[0006] The present invention adopts the following technical solution:

[0007] A high-lift machine for tightening nuts on steel structures includes: a high-lift platform, comprising a movable component, a lifting component located on the movable component, and an installation platform located on the lifting component; an adjusting bracket mounted on the installation platform; a universal joint, one end of which is connected to the adjusting bracket, and the other end of which is provided with a fixed bracket; and an electric wrench mounted on the fixed bracket, capable of displacement according to changes in the angle and position of the fixed bracket. The electric wrench is supported by the universal joint and the fixed bracket, eliminating the need for operators to hold heavy electric wrenches and completely solving the problem of continuous load (several kilograms to tens of kilograms) in traditional operations. The electric wrench can be adjusted with multiple degrees of freedom along the universal joint, covering nut tightening needs at any angle and position, and adapting to the complex steel structure environment of substations.

[0008] Preferably, the universal joint includes a linkage assembly rotatably fitted on an adjusting bracket and a locking hinge located at one end of the linkage assembly. The locking hinge is provided with a fixed bracket. The angle of the electric wrench can be fixed and adjusted by the locking hinge, and the hinge provides stable support after locking, reducing the time spent on repeated adjustments during operation.

[0009] Preferably, the linkage assembly includes a first connector connected to the adjustment bracket, a first linkage assembly hinged to the first connector, a second connector hinged to the first linkage assembly, and a second linkage assembly hinged to the second connector. The multi-stage hinge structure enables a wider range of extension and bending, covering narrow or deep working areas.

[0010] Preferably, a third connector is hinged to the second linkage assembly. The third connector is connected to the locking hinge via a rotatable double-sided flange. The double-sided flange provides 360° rotation capability, allowing the electric wrench to be finely adjusted to the optimal working angle.

[0011] Preferably, both the first and second linkage assemblies include two parallel linkages, and each of the two linkages has a pneumatic spring between them. The pneumatic spring counteracts the weight of the electric wrench, so only a small external force is needed to move the linkage during operation, greatly saving effort.

[0012] Preferably, the first connector is provided with a connecting sleeve that is rotatably fitted on the adjusting bracket, and the connecting sleeve is provided with a fixing bolt, so as to facilitate the adjustment of the overall height of the connecting rod assembly.

[0013] Preferably, the fixed bracket is connected to the locking hinge via a universal ball joint, and the angle of the fixed bracket can be adjusted to adjust the orientation of the electric wrench.

[0014] Preferably, the installation platform is equipped with a shelf to centrally store bolts, tools and other materials, reducing the number of times workers need to climb up and down to retrieve parts.

[0015] Preferably, the high-speed platform has a built-in power supply, and the platform surface or shelf is equipped with a socket connected to the power supply to prevent the external cable from being snagged or tangled during lifting.

[0016] Preferably, a ladder is provided on one side of the high-altitude platform to facilitate climbing by construction workers.

[0017] Compared with the prior art, the present invention has the following advantages: The present invention sets the electric wrench on a fixed bracket, which can move with the angle and position of the fixed bracket. The electric wrench is supported by the universal joint and the fixed bracket, so the operator does not need to hold a heavy electric wrench, which completely solves the problem of continuous load (several kilograms to tens of kilograms) in traditional operation; the electric wrench can be adjusted with multiple degrees of freedom with the universal joint to cover the nut tightening needs at any angle and position, and adapt to the complex steel structure environment of substations. Attached Figure Description

[0018] Figure 1 A schematic diagram of a high-speed machine for fastening nuts to steel structures.

[0019] Figure 2 for Figure 1 A magnified view of part A.

[0020] Figure 3 Side view of a high-speed machine for fastening nuts to steel structures.

[0021] Figure 4 for Figure 3 A magnified view of part B.

[0022] In the diagram, the components are: 1. High-altitude platform; 1-1. Moving component; 1-2. Lifting component; 1-3. Installation platform; 1-4. Climbing ladder; 2. Adjustable bracket; 3. Universal linkage; 3-1. Fixed bracket; 3-2. Linkage assembly; 3-2. First connector; 3-2-1. First linkage assembly; 3-2-2. Second connector; 3-2-3. Second linkage assembly; 3-2-4. Third connector; 3-2-5. Double-sided flange; 3-2-6. Pneumatic spring; 3-2-7. Connecting sleeve; 3-2-8. Locking hinge; 3-3. Universal ball joint; 3-4. Electric wrench; 4. Shelf; 5. Socket; 6. Detailed Implementation

[0023] To facilitate understanding of the technical solution of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] like Figure 1-4As shown, a high-lift machine for tightening nuts on steel structures includes: a high-lift platform 1, comprising a moving component 1-1, a lifting component 1-2 located on the moving component 1-1, and an installation platform 1-3 located on the lifting component 1-2, wherein the moving component 1-1 is a moving trolley, and the lifting component 1-2 can be a scissor lift; an adjusting bracket 2, set on the installation platform 1-3; a universal joint 3, one end connected to the adjusting bracket 2, and the other end provided with a fixed bracket 3-1; an electric wrench 4, set on the fixed bracket 3-1, capable of displacement as the angle and position of the fixed bracket 3-1 changes, and supported by the universal joint and the fixed bracket, eliminating the need for operators to hold heavy electric wrenches, completely solving the problem of continuous load (several kilograms to tens of kilograms) in traditional operations; the electric wrench can be adjusted with multiple degrees of freedom along the universal joint, covering nut tightening needs at any angle and position, adapting to the complex steel structure environment of substations.

[0025] The universal joint 3 includes a link assembly 3-2 rotatably fitted on the adjusting bracket 2 and a locking hinge 3-3 located at one end of the link assembly 3-2. The locking hinge 3-3 is provided with a fixing bracket 3-1. The angle of the electric wrench can be fixed and adjusted via the locking hinge, and it provides stable support after locking, reducing the time spent on repeated adjustments during operation. The locking hinge 3-3 can open and close from 0 to 90 degrees and can be locked at any angle by a screw; this is existing technology and will not be described in detail.

[0026] The linkage assembly 3-2 includes a first connector 3-2-1 connected to the adjusting bracket 2, a first linkage assembly 3-2-2 hinged to the first connector 3-2-1, a second connector 3-2-3 hinged to the first linkage assembly 3-2-2, and a second linkage assembly 3-2-4 hinged to the second connector 3-2-3. The multi-stage hinge structure enables a wider range of extension and bending, covering narrow or deep working areas.

[0027] The second link assembly 3-2-4 is hinged with a third connector 3-2-5, which is connected to the locking hinge 3-3 via a rotatable double-sided flange 3-2-6. The double-sided flange provides 360° rotation capability, allowing the electric wrench to be finely adjusted to the optimal working angle.

[0028] The first link assembly 3-2-2 and the second link assembly 3-2-4 each include two parallel links, and each of the two links is connected by a pneumatic spring 3-2-7. The pneumatic spring counteracts the weight of the electric wrench, so only a small external force is needed to move the link during operation, which greatly saves effort.

[0029] The first connector 3-2-1 is provided with a connecting sleeve 3-2-8 that is rotatably fitted on the adjusting bracket 2, and the connecting sleeve 3-2-8 is provided with a fixing bolt, which facilitates the adjustment of the overall height of the connecting rod assembly 3-2.

[0030] The fixed bracket 3-1 is connected to the locking hinge 3-3 via a universal ball joint 3-4, and the angle of the fixed bracket 3-1 can be adjusted to adjust the orientation of the electric wrench 4.

[0031] The installation platform 1-3 is equipped with a shelf 5 to centrally store bolts, tools and other materials, reducing the time that workers spend climbing up and down to retrieve parts.

[0032] The high-altitude platform 1 has a built-in power supply, and the surface of the mounting platform 1-3 or the shelf 5 is equipped with a socket 6 connected to the power supply to prevent the external cable from being snagged or tangled during lifting.

[0033] The high-altitude platform 1 is equipped with climbing ladders 1-4 on one side to facilitate construction workers' climbing.

[0034] The above are merely preferred embodiments of this utility model. The scope of protection of this utility model is defined by the scope of the claims. Any improvements and modifications made by those skilled in the art without departing from the spirit and scope of this utility model should also be considered as protection within the scope of this utility model.

Claims

1. A high-speed machine for fastening nuts on steel structures, characterized in that, include: The high-speed platform (1) includes a moving component (1-1), a lifting component (1-2) located on the moving component (1-1), and a mounting platform (1-3) located on the lifting component (1-2). Adjustable bracket (2) is installed on the mounting platform (1-3); The universal linkage (3) is connected to the adjusting bracket (2) at one end and has a fixed bracket (3-1) at the other end. An electric wrench (4) is mounted on a fixed bracket (3-1) and can move as the angle and position of the fixed bracket (3-1) change.

2. The high machine for steel structure nut fastening according to claim 1, characterized in that, The universal joint (3) includes a link assembly (3-2) rotatably fitted on the adjusting bracket (2) and a locking hinge (3-3) located at one end of the link assembly (3-2), and a fixed bracket (3-1) is provided on the locking hinge (3-3).

3. The high machine for steel structure nut fastening according to claim 2, characterized in that, The linkage assembly (3-2) includes a first connector (3-2-1) connected to the adjusting bracket (2), a first linkage assembly (3-2-2) hinged to the first connector (3-2-1), a second connector (3-2-3) hinged to the first linkage assembly (3-2-2), and a second linkage assembly (3-2-4) hinged to the second connector (3-2-3).

4. The high machine for steel structure nut fastening according to claim 3, characterized in that, The second link assembly (3-2-4) is hinged with a third connector (3-2-5), which is connected to the locking hinge (3-3) via a rotatable double-sided flange (3-2-6).

5. The high machine for steel structure nut fastening according to claim 3, characterized in that, The first link assembly (3-2-2) and the second link assembly (3-2-4) each include two parallel links, and each of the two links has a pneumatic spring (3-2-7) between them.

6. The high machine for steel structure nut fastening according to claim 3, characterized in that, The first connector (3-2-1) is provided with a connecting sleeve (3-2-8) that is rotatably fitted on the adjusting bracket (2), and the connecting sleeve (3-2-8) is provided with a fixing bolt.

7. The high machine for steel structure nut fastening according to claim 2, characterized in that, The fixed bracket (3-1) is connected to the locking hinge (3-3) via a universal ball joint (3-4).

8. The high machine for steel structure nut fastening according to claim 1, characterized in that, The installation platform (1-3) is equipped with a shelf (5).

9. The high machine for steel structure nut fastening according to claim 8, characterized in that, The high-speed platform (1) has a built-in power supply, and the surface of the mounting platform (1-3) or the shelf (5) is provided with a socket (6) connected to the power supply.

10. A high-speed machine for fastening nuts on steel structures according to claim 1, characterized in that, The high-altitude platform (1) is equipped with a ladder (1-4) on one side.