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Anti-twisting washer clamp and special washer seat thereof

A washer seat and washer technology, which is used to measure the direction of torque/torsional force when tightening, can solve the problems of reducing the probability of washer rotation, destroying the integrity of the sample, and not being able to completely ensure that the washer is fixed. It achieves convenient operation and excellent structure. simple effect

Active Publication Date: 2011-06-15
ZHEJIANG HUADIAN EQUIP TESTING INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in actual work, we found that the first and second methods can only reduce the probability of the washer rotating, and cannot completely ensure that the washer is fixed
Although the third method can ensure the rotation of the gasket, it destroys the integrity of the sample

Method used

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  • Anti-twisting washer clamp and special washer seat thereof
  • Anti-twisting washer clamp and special washer seat thereof
  • Anti-twisting washer clamp and special washer seat thereof

Examples

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Embodiment Construction

[0021] refer to figure 2 , 3 , the washer anti-twist clamp of the present invention includes a washer seat 6, and the washer seat 6 is provided with a central hole 8 and a circular groove 9 for placing the washer, and three circular grooves are evenly arranged on the circumferential surface There are radial positioning holes 10 through which fixed hexagonal bolts 11 are arranged in the positioning holes 10 . The outer diameter of the washer seat 6 is slightly smaller than the inner diameter of the accommodating groove 7 of the measured bolt fixing fixture 3 .

[0022] refer to Figure 4 , 5 , Place the washer 4 in the circular groove 9 of the washer seat 6, and tighten the fixing hex bolt 11 to fix the washer 6.

[0023] refer to Figure 6 , the installation process of the tested sample before the torque test is as follows:

[0024] First pass the head of the bolt 1 through the central hole of the sensor 2 and the bolt fixing fixture 3 from the outside, then the fixture...

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Abstract

The invention discloses an anti-twisting washer clamp and a special washer seat thereof. The clamp comprises a washer seat and is characterized in that the washer seat is provided with a central hole and a circular groove for arranging a washer and provided with positioning holes in communication with the circular groove on the periphery, and each positioning hole is internally provided with a fixed bolt. In the anti-twisting washer clamp, the washer is arranged in the circular groove, fixed with the fixed bolt and sleeved in a tested bolt for a torque test. A contact area between the washer seat and an accommodating groove for the fixed clamp of the tested bolt is larger than a contact area between the washer and the accommodating groove so that friction resistance generated by twisting is also greater, the washer can not rotate in the test process to ensure the effective test. Moreover, the clamp is simple in structure and convenient to operate.

Description

technical field [0001] The present invention relates to an auxiliary part for torque test, in particular to an auxiliary part for torque test of a fastener, in particular to a fixing fixture for preventing rotation of a washer in a bolt connection pair to be tested. Background technique [0002] When performing a torque test on a bolt connection pair, follow the steps below: refer to figure 1 First, the head of the bolt 1 passes through the central hole of the sensor 2 and the bolt fixing fixture 3 from the outside, then the washer 4 and the nut 5 are placed on the bolt head from the inside in turn, and placed in the accommodation groove of the bolt fixing fixture 3 7; after tightening the nut, put the torque test sleeve on the nut 5. Turn on the torque test power supply, the sleeve slowly tightens the nut and gradually applies torque to the bolt connection pair until the bolt is twisted off. In this process, the sensor outputs the detected torque to the control circuit fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/24
Inventor 俞敏波钱苗李瑞李国勇
Owner ZHEJIANG HUADIAN EQUIP TESTING INST
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