Bolt breaking torque detection clamp and detection method thereof

Abstract

The invention discloses a bolt breaking torque detection clamp and a detection method thereof. The bolt breaking torque detection clamp comprises a main lead screw, one end of the main lead screw is fixedly provided with a base, and the base is used for being installed in a bolt detector; the other end of the main lead screw is provided with an internal thread chuck, and the inner wall of the internal thread chuck is provided with an internal thread matching a bolt to be detected. The invention aims at providing a clamp for detecting the breaking torque of the bolt and the detection method thereof so as to solve the problems in the prior art, thereby realizing the effective combination of the detection of the breaking torque of the bolt and the existing bolt detector and achieve the objective of full-automatic detection of the breaking torque of various of bolts.

Description

technical field [0001] The invention relates to the field of material detection, in particular to a fixture for detecting bolt breaking torque and a detection method thereof. Background technique [0002] The failure torque detection of short-strength bolts is one of the routine detection items of bolt mechanical properties. The final failure torque value is measured by applying a certain stable torque to cause the bolts to twist and break. During the construction of nuclear power plants, a large number of bolt failure torque detection requirements were generated. In the past, the laboratory was aimed at the failure torque detection requirements. Because the laboratory automatic bolt detector did not have a special supporting torque fixture, the bolt failure torque was managed and classified. : [0003] 1. The breaking torque value of high-strength short bolts is relatively large, and it is difficult to twist them off manually. The detection is generally handled by outsourc...

AI Technical Summary

Problems solved by technology

[0003] 1. The failure torque value of high-strength short bolts is relatively large, and it is difficult to twist them off manually. The detection is generally handled by outsourcing to a third party.

The main problems are: 1) Outsourced inspection cycle is too long and uncontrollable; 2) Outsourced inspection costs are high, and it is difficult to control costs without effective market price reference documents

However, there are still three problems: 1) The artificial destruction method is artificially using a wrench to apply torque to destroy. During the test process, a fixed torque and a constant loading rate cannot be stably provided, so the torque application rate cannot be accurately controlled, resulting in relatively discrete data. 2) During the whole process of the destructive test, personnel are directly exposed to the front of the test piece, which is very easy to cause safety hazards; 3) It is very difficult to remove the broken wire after the test, and it is impossible to quickly replace the test piece, which greatly prolongs the test time

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