Simple-to-mount bolt with tightening torque

Abstract

The utility model belongs to the field of aircraft structure design, and relates to an easy-to-install bolt with tightening torque, which comprises a bolt body, a rotating handle is arranged at the top of the bolt body, and the required tightening torque can be simultaneously achieved without tools to install the bolt. And the assembly efficiency and the use safety of the airplane are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of aircraft structural design and relates to a bolt with self-tightening torque for easy installation. Background Technology

[0002] Aircraft structural assembly involves numerous bolted connections. Using a fixed-torque wrench for installation is inefficient and prone to errors due to space constraints. Therefore, designing a bolt with its own tightening torque for easy installation is urgently needed. Utility Model Content

[0003] The purpose of this utility model is:

[0004] This paper proposes a bolt with built-in tightening torque for easy installation, which solves the problems of low efficiency and easy error caused by the current installation method of using a torque wrench due to limited installation space. When installing the bolt, no tools are required and the specified tightening torque can be achieved without a torque wrench.

[0005] The technical solution of this utility model:

[0006] A bolt with built-in tightening torque for easy installation includes a bolt body, and a rotating handle is provided on the top of the bolt body.

[0007] Furthermore, a mounting hole is provided on the top surface of the bolt body, and one end of the rotating handle is detachably installed in the mounting hole.

[0008] Furthermore, the mounting hole on the top surface of the bolt body is provided at a certain distance from the bolt's central axis.

[0009] Furthermore, a mounting hole is provided on the top side of the bolt body, and one end of the rotating handle is detachably installed in the mounting hole.

[0010] Furthermore, the end of the rotary handle is provided with anti-slip knurling.

[0011] Furthermore, the rotary handle and the bolt body are integrally formed.

[0012] The beneficial effects of this utility model are:

[0013] This invention abandons the traditional method of using a fixed-force wrench to clamp and rotate the bolt head for installation. Referring to the principle of millstone motion, a rotating handle of a certain diameter is made at a certain distance from the bolt axis on the top or side of the bolt head. The tightening torque is given based on the handle's eccentricity and the breaking force at the handle's root. This achieves bolt pre-tightening without the need for installation tools. During installation, the bolt is passed through a multi-layered connection structure, and the handle at the top of the bolt head is rotated to tighten the bolt and nut. When the handle breaks, it indicates that the specified tightening torque has been achieved.

[0014] This invention proposes a bolt with built-in tightening torque for easy installation, which can achieve the required tightening torque without tools, greatly improving the assembly efficiency and safety of aircraft. Attached Figure Description

[0015] Figure 1 This is a front view of the bolt in Example 1;

[0016] Figure 2 This is a three-dimensional view of the bolt in Example 1;

[0017] Figure 3 This is a top view of the bolt in Example 1;

[0018] Figure 4 This is a bottom view of the bolt in Example 1;

[0019] Figure 5 This is a front view of the bolt in Example 2;

[0020] Figure 6 This is a three-dimensional view of the bolt in Example 2;

[0021] Figure 7 This is a top view of the bolt in Example 2;

[0022] Figure 8 This is a bottom view of the bolt in Example 2;

[0023] Wherein, 1—rotary handle; 2—fracture section when preload is reached; 3—bolt body. Detailed Implementation

[0024] Embodiment 1 of this utility model, as follows: Figure 1-4 As shown, the bolt body 3 is further provided with a mounting hole on the preload fracture section 2 on the top surface of the bolt body 3. One end of the rotating handle 1 is detachably installed in the mounting hole. The mounting hole on the top surface of the bolt body 3 is a certain distance from the bolt's central axis, causing the bolt body 3 and the rotating handle 1 to be eccentric, ensuring that the bolt body 3 can be smoothly rotated when the rotating handle is turned.

[0025] The end of the rotary handle 1 is provided with anti-slip knurling, and when the rotary handle 1 is rotated, sufficient friction can ensure that the hand will not fall off the end of the handle.

[0026] Embodiment 2 of this utility model, such as Figure 5-8 As shown, it includes a bolt body 3. Further, a mounting hole is provided on the top side of the bolt body 3, and one end of the rotating handle 1 is detachably installed in the mounting hole.

[0027] The end of the rotary handle 1 is provided with anti-slip knurling, and when the rotary handle 1 is rotated, sufficient friction can ensure that the hand will not fall off the end of the handle.

[0028] This utility model relates to a bolt with built-in tightening torque for easy installation. It abandons the traditional method of using a fixed-force wrench to hold the bolt head and rotate it for installation. Referring to the principle of millstone motion, a rotating handle 1 of a certain diameter is made at a certain distance from the bolt axis on the top or side of the bolt head. The tightening torque is given according to the handle's eccentricity and the breaking force at the handle's root, thus achieving bolt pre-tightening installation without the need for installation tools. Figure 1-8 As shown. During installation, pass the bolt through the multi-layer connection structure, rotate the top of the bolt head and turn the handle 1 to tighten the bolt and nut. When the handle breaks, it indicates that the specified tightening torque for the bolt has been achieved.

Claims

1. A bolt with built-in tightening torque for easy installation, characterized in that, The device includes a bolt body with a rotating handle on its top. A mounting hole is provided on the top surface of the bolt body, and one end of the rotating handle is detachably installed within the mounting hole. There is a certain distance between the mounting hole on the top surface of the bolt body and the bolt's central axis. During installation, the bolt is passed through a multi-layered connection structure, and the rotating handle on the top of the bolt head is rotated to tighten the bolt and nut. When the handle breaks, it indicates that the specified tightening torque for the bolt has been achieved.

2. The bolt with self-tightening torque for easy installation according to claim 1, characterized in that, The end of the rotary handle is provided with anti-slip knurling.

3. The bolt with self-contained tightening torque for easy installation according to claim 1, characterized in that, The rotating handle and the bolt body are integrally formed.

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