T template mounting bolt tightening tool

CN224659343UActive Publication Date: 2026-08-21CHINA STATE CONSTR INT ENG CO LTD +1
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Patent Information

Application Number
CN202521322220.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-26
Publication Date
2026-08-21
Estimated Expiration
2035-06-26

AI Technical Summary

Technical Problem

[0004]但专利文献CN203045654U公开了一种建筑物顶部安装螺帽的拧紧工具,拧紧工具整体机构需要单独加工,对应不同的螺帽也需要加工不同尺寸的拧紧工具,此拧紧工具手柄尺寸固定,在复杂施工现场,可能出现手柄尺寸不匹配而无法使用该拧紧工具的问题

Benefits of technology

[0017] 1. The tool of this utility model uses common materials found on construction sites for its torque connecting rod, handle, and reinforcing steel bars, enabling the tightening tool to be sourced locally and reducing construction costs. The quality of the tightening tool is ensured by welding the reinforcing steel bars. The "plug-and-play" usage method, where the handle is inserted into the connecting mechanism and removed after use, is suitable for complex construction site environments and ensures efficient and accurate tightening of nuts during the T-beam formwork tensioning and reinforcement process.

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Abstract

The utility model discloses a T template installation bolt tightening tool, including hexagonal sleeve (1) and connecting rod mechanism, it includes moment connecting rod (2) and reinforcing bar (4), moment connecting rod (2) adopts the common scaffold steel pipe processing, reinforcing bar (4) adopts the cutting of common screw thread steel of construction site and becomes, and hold pole handle (3), hold pole handle (3) adopts the cutting of common screw thread steel of construction site and becomes, and hold pole fastening mechanism, it includes fastening pressing plate (5), fastening nut (6) and fastening screw (7). The utility model discloses tool processing simple, the material can be used locally, and the construction cost is greatly reduced, and the use mode of "plug and play" adapts complex construction site environment, and the quality is reliable, can efficiently complete the nut tightening work in the T beam template counter -pulley reinforcing process.
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Description

Technical Field

[0001] The embodiments of this utility model belong to the field of building engineering, and more specifically, relate to a T-formwork installation bolt tightening tool. Background Technology

[0002] In modern construction engineering, T-section structures are widely used in bridge engineering, high-rise buildings, and industrial plants due to their excellent mechanical properties and space utilization. Taking bridge engineering as an example, T-section beams significantly improve the load-bearing efficiency and stability of the structure by increasing the compression area of ​​the top flange and optimizing the shear capacity of the vertical beam ribs. However, the construction quality of T-section structures is highly dependent on the reliability of the reinforcement connections, especially the torque value of the mechanical connection between the threaded steel bars and nuts, which must meet the requirements to ensure tight thread engagement without slippage or loosening, thereby meeting the design specifications for structural safety.

[0003] In the construction of T-shaped cross-section structures, steel bar connections are typically tightened using manual tools such as adjustable wrenches and box wrenches. These tools rely on the operator's experience to judge torque values, requiring workers to climb to the working surface below the T-formwork to perform the work sequentially. This results in inconsistent force application, complex operation, and safety risks such as bumps and falls. For example, patent document CN203045654U discloses a tightening tool for installing nuts on the top of a building. This tool uses an installation sleeve with a cavity at the top to accommodate the nut and prevent its circumferential movement. The cavity is fitted with the nut, and the operator, standing on the ground, tightens the nut by rotating a handle mounted on the bottom of the installation sleeve.

[0004] However, patent document CN203045654U discloses a tightening tool for installing nuts on the top of a building. The entire mechanism of the tightening tool needs to be processed separately, and different sizes of tightening tools need to be processed for different nuts. The handle size of this tightening tool is fixed. In complex construction sites, there may be problems such as the handle size not matching and the tightening tool cannot be used. Utility Model Content

[0005] To address the aforementioned deficiencies or improvement needs of existing technologies, this utility model provides a bolt tightening tool for T-beam formwork installation. The torque connecting rod, handle, and reinforcing steel bars are all made from materials commonly found on construction sites, enabling the tightening tool to utilize locally sourced materials and reducing construction costs. The quality of the tightening tool is ensured by welding reinforcing steel bars. The "plug-and-play" design, where the handle is inserted into the connecting mechanism and removed after use, adapts to complex construction site environments, ensuring efficient and accurate tightening of bolts during the T-beam formwork reinforcement process.

[0006] To achieve the above objectives, this utility model provides a T-formwork installation bolt tightening tool, comprising:

[0007] The connecting rod mechanism includes a torque connecting rod and a reinforcing bar. The torque connecting rod is made of scaffolding steel pipes from the construction site and has a hole at the top. The reinforcing bar (4) is made of threaded steel from the construction site.

[0008] The hexagonal sleeve provided on the connecting rod mechanism is determined according to the nut specifications of the tie rod precision rolled thread steel used for T-beam template reinforcement;

[0009] The handle on the connecting rod mechanism is made of threaded steel from the construction site;

[0010] The lever fastening mechanism provided on the connecting rod mechanism includes a fastening pressure plate and a fastening nut placed on top of the fastening pressure plate.

[0011] Furthermore, each reinforcing bar is located around the top opening of the torque connecting rod.

[0012] Furthermore, the hexagonal sleeve is located at the bottom of the torque connecting rod.

[0013] Furthermore, the handle is located at the top opening of the torque connecting rod.

[0014] Furthermore, the fastening pressure plate is located on top of the torque connecting rod and the reinforcing steel bar.

[0015] Furthermore, the lever fastening mechanism includes a fastening screw disposed in the fastening nut.

[0016] In summary, compared with the prior art, the above-described technical solution conceived by this utility model can achieve the following beneficial effects:

[0017] 1. The tool of this utility model uses common materials found on construction sites for its torque connecting rod, handle, and reinforcing steel bars, enabling the tightening tool to be sourced locally and reducing construction costs. The quality of the tightening tool is ensured by welding the reinforcing steel bars. The "plug-and-play" usage method, where the handle is inserted into the connecting mechanism and removed after use, is suitable for complex construction site environments and ensures efficient and accurate tightening of nuts during the T-beam formwork tensioning and reinforcement process.

[0018] 2. The tool of this utility model uses a torque connecting rod made from ordinary scaffolding steel pipe, and the handle and reinforcing steel bars are made from commonly available threaded steel bars on the construction site, so as to realize the function of using local materials for tightening tools and reducing construction costs.

[0019] 3. The tool of this utility model has reinforcing steel bars evenly welded to the opening of the torque connecting rod to ensure the quality of the tightening tool. When the tightening tool is needed, the handle is inserted into the opening of the connecting rod mechanism. After use, the handle is removed. This "plug and play" usage method can adapt to complex construction site environments. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the bolt tightening tool for the T template in this embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram showing the specifications and dimensions of the hexagonal sleeve according to an embodiment of this utility model;

[0022] Figure 3 This is a half-sectional view of the bolt tightening tool for the T template in this practical embodiment.

[0023] In all the accompanying drawings, the same reference numerals denote the same technical features, specifically: 1-hexagonal sleeve, 2-torque connecting rod, 3-handle grip, 4-reinforcing steel bar, 5-fastening pressure plate, 6-fastening nut, 7-fastening screw. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not intended to limit the present utility model. Furthermore, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0025] This embodiment provides a tool for tightening T-formwork mounting bolts. For example... Figure 1 , 2As shown in Figure 3, the assembly includes a hexagonal sleeve 1, a connecting rod mechanism, a handle 3, and a handle fastening mechanism. The hexagonal sleeve 1 needs to be selected based on the nut specifications of the threaded steel bars used for reinforcing the T-beam template. The model of the hexagonal sleeve 1 must be confirmed. Then, the hexagonal sleeve 1 is installed into the bottom of the connecting rod mechanism and welded in place to ensure its secure installation. Finally, the threaded steel bars are cut and inserted into the opening at the top of the connecting rod mechanism to complete the assembly of the handle 3. The connecting rod mechanism includes a torque connecting rod 2. The reinforcing steel bars 4 are made by making a through hole at the top of the torque connecting rod 2, then cutting 4 threaded steel bars to make 4 reinforcing steel bars 4. The 4 reinforcing steel bars 4 are aligned with the top of the torque connecting rod 2, and the reinforcing steel bars 4 are evenly welded and fixed around the hole using a welding process to ensure the structural strength near the top hole of the torque connecting rod 2. The rod holding fastening mechanism includes a fastening pressure plate 5, a fastening nut 6, and a fastening screw 7. The fastening pressure plate 5 is installed on the top of the torque connecting rod 2, the fastening nut 6 is installed on the fastening pressure plate 5, and the fastening screw 7 is used in conjunction with the fastening nut 6.

[0026] The hexagonal sleeve 1 is selected according to the nut specifications of the tensioned threaded steel used for T-beam template reinforcement. The hexagonal sleeve 1 is a hexagonal bolt accessory that can be purchased and obtained directly on the construction site. The obtained hexagonal sleeve 1 is installed into the bottom of the connecting rod mechanism and welded and fixed using welding technology.

[0027] In the connecting rod mechanism, the torque connecting rod 2 is made from common scaffolding steel pipes commonly found on construction sites. The steel pipe specifications are Φ48×3.5mm, and the length is processed to 2m. A hexagonal sleeve 1 is welded to the bottom of the torque connecting rod 2. During the T-formwork installation process, the bolts are tightened. A through hole with a diameter of 30mm is made 15mm from the top of the torque connecting rod 2. The hole diameter and shape must meet the requirements, and metal shavings and burrs inside the hole must be cleaned immediately after drilling to avoid injuring construction workers. Then, four threaded steel bars are selected for reinforcement. Four reinforcing bars 4, with a diameter of 18mm and a length of 30cm, are used. One end of each reinforcing bar 4 is aligned with the top of the torque connecting rod 2, and they are evenly welded near the opening to reinforce the opening. The handle 3 is then inserted into the opening on the torque connecting rod 2. The handle 3 is made from readily available threaded steel found on the construction site, with a diameter of 20mm and a length of 1200mm. The handle 3 is not fixed to the connecting rod mechanism and can be used plug-and-play to adapt to the complex and changing environment of the processing site. For this tool, based on the nut specifications of the threaded steel used for T-beam formwork reinforcement, a hexagonal sleeve is selected and welded to the bottom of the connecting rod mechanism. Then, the cut handle is inserted into the hole at the top of the connecting rod mechanism to complete the assembly of this tightening tool.

[0028] In the grip fastening mechanism, the fastening plate 5 is cut from a steel plate on the construction site. The fastening nut 6 and the fastening screw 7 are standard screws and nuts. The cutting size of the fastening plate 5 needs to be determined according to the torque connecting rod 2 and the reinforcing steel bar 4. The fastening plate 5 connects the torque connecting rod 2 and the reinforcing steel bar 4 into a whole, further reinforcing the opening of the torque connecting rod 2. The fastening nut 6 is welded on the fastening plate 5 and has a corresponding hole for the fastening screw 7. The fastening screw 7 is placed in the fastening nut 6. After the grip handle 3 is inserted into the hole of the torque connecting rod 2 at the appropriate position, the fastening screw 7 is tightened, so that the fastening screw 7 presses the grip handle 3 downward, thereby fixing the distance of the grip handle 3 inserted into the hole of the torque connecting rod 2. After assembling the hexagonal sleeve, connecting rod mechanism, and handle, the tool of this utility model needs to tighten the fastening screws to press the handle, thereby fixing the insertion position of the handle and ensuring that the tightening tool can easily complete the tightening of all the hexagonal nuts on the T-beam template tie reinforcement.

[0029] The usage method of this embodiment is as follows: When the T-beam template is reinforced by tension, the hexagonal nut of the tensioned threaded steel is initially tightened onto the threaded steel by hand. Then, the matching hexagonal sleeve is selected and the tightening tool is assembled. After the tightening tool is aligned and inserted into the hexagonal nut of the threaded steel, the worker holds the handle by hand to tighten it. After tightening, the handle of the tightening tool is removed, the remaining part is inserted into the next hexagonal nut, and then the handle is inserted again to tighten it.

[0030] By repeating the above process, the tightening of all hexagonal nuts on the T-beam formwork tie rod reinforcement can be completed using the T-formwork installation bolt tightening tool.

[0031] In summary, this T-beam formwork installation bolt tightening tool is simple to manufacture, uses locally sourced materials, significantly reducing construction costs. Its "plug-and-play" operation is suitable for complex construction site environments, and it is reliable in quality, enabling efficient and precise tightening of nuts during the T-beam formwork reinforcement process.

[0032] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tool for tightening T-shaped template mounting bolts, characterized in that, include: The connecting rod mechanism includes a torque connecting rod (2) and a reinforcing steel bar (4). The torque connecting rod (2) is made of scaffolding steel pipes from the construction site and has a hole at the top. The reinforcing steel bar (4) is made of threaded steel from the construction site. The hexagonal sleeve (1) is provided on the connecting rod mechanism. The specifications of the nuts of the tie rods (1) are determined according to the specifications of the threaded steel bars used for the reinforcement of the T-beam template. The handle (3) provided on the connecting rod mechanism is made of threaded steel from the construction site; The lever fastening mechanism provided on the connecting rod mechanism includes a fastening pressure plate (5) and a fastening nut (6) placed on top of the fastening pressure plate (5).

2. The T-formwork installation bolt tightening tool according to claim 1, characterized in that, Each reinforcing bar (4) is placed around the top opening of the torque connecting rod (2).

3. A T-formwork installation bolt tightening tool according to claim 1 or 2, characterized in that, The hexagonal sleeve (1) is located at the bottom of the torque connecting rod (2).

4. The T-formwork installation bolt tightening tool according to claim 3, characterized in that, The handle (3) is located at the top opening of the torque connecting rod (2).

5. A T-formwork installation bolt tightening tool according to claim 4, characterized in that, The fastening plate (5) is located on top of the torque connecting rod (2) and the reinforcing steel bar (4).

6. A T-formwork installation bolt tightening tool according to claim 5, characterized in that, The grip fastening mechanism includes a fastening screw (7) located in the fastening nut (6).

Citation Information

Patent Citations

  • Tightening tool used for installing nut on top of building

    CN203045654U