Tensioning instrument for screw detection and application thereof

Abstract

The invention discloses a tensioning instrument for screw detection and application thereof. The tensioning instrument comprises a mechanical module, a data collection module and a data analysis module; the mechanical module is used for tensioning a screw and adjusting the tightness degree of a nut; the data collection module is used for collecting pressure, ultrasonic flight time and temperature data which are generated when the mechanical module tensions the screw; the data analysis module is used for receiving the data collected by the data collection module and generating a length-tensile force relation curve of the screw. By using the tensioning instrument, current pre-tightening force of the screw can be accurately and conveniently tested out, and a basis is provided for determining whether tensioning supplementing is needed or not subsequently; meanwhile, after tensioning supplementing of tensile force of the screw is completed, the tensioning supplementing effect can be assessed according to a testing result.

Description

technical field [0001] The invention relates to a tensioner for screw detection and its application, in particular to a tensioner for large cross-section screw detection applied to suspension bridges and its application. Background technique [0002] Before the present invention, there is no efficient method and equipment to test the tension of the screw rod used to fasten the cable clamp on the suspension bridge. Under normal circumstances, in order to ensure that the tension of the screw is in a reasonable state, the solution of the management and maintenance unit is to stretch the screw to the specified tension state, tighten the nut, and effectively hoop the screw on the cable clamp through the nut. [0003] The disadvantage of this method is that in order to keep the main cable of the bridge load-bearing member under a reasonable stress state, all the screw rods need to be stretched regularly, which is time-consuming and labor-intensive. And after stretching, it is imp...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of this method is that in order to keep the main cable of the bridge load-bearing member under a reasonable stress state, all the screws need to be stretched regularly, which is time-consuming and labor-intensive.

And after stretching, it is impossible to determine whether the tension of the screw meets the requirements, and the quality of stretching cannot be guaranteed

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