Novel method for accurate measurement and monitoring when rotating shaft suffers from axial force and torque simultaneously

Abstract

The invention discloses a novel method for accurate measurement and monitoring when rotating shaft suffers from axial force and torque simultaneously. The content lies in that a grid elastic patch isadhered onto the rotating shaft, and micro deformation occurring on the surface of the shaft when the rotating shaft is loaded is transmitted to the paste so as to cause a feature grid change on the surface of the paste, wherein the strain state on the surface of the paste can reflect the surface strain state of the corresponding point of the rotating shaft. Image acquisition is carried out on thegrid feature on the surface of the paste when a high-speed camera is loaded, obtained images before and after deformation are treated by using special development software, that the rotating shaft isloaded is induced through coordinate change of the grid feature points. According to the method, the axial load and torque can be determined through obtained feature point coordinates before and after deformation, non-contact type measurement is adopted, the axial load and torque of the rotating shaft can be measured simultaneously, the winding problem of a circuit and the transmission and interference problems of signals are not taken into account, the reliability of measurement result is high, and the method has preferable development prospect in engineering application.

Description

technical field [0001] The invention relates to the technical field of torque and axial load measurement of a rotating shaft, in particular to a new method for accurate measurement and monitoring when a rotating shaft is simultaneously subjected to axial force and torque. Background technique [0002] Shaft parts are the main actuators of mechanical transmission devices. During the transmission process, the rotating shaft will bear various loads such as torque and axial load; in some mechanical equipment, it is necessary to carry out the torque and axial load on the rotating bearing Real-time monitoring and detection, but the current torque sensor can only measure the size of pure torque, can not bear and measure the axial load (thrust and pull), so a new method that can simultaneously measure the axial load and torque on the rotating shaft is needed . Contents of the invention [0003] In order to overcome the deficiencies of the prior art above, the present invention pr...

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Problems solved by technology

[0002] Shaft parts are the main actuators of mechanical transmission devices. During the transmission process, the rotating shaft will bear various loads such as torque and axial load; in some mechanical equipment, it is necessary to carry out the torque and axial load on the rotating bearing Real-time monitoring and detection, but the current torque sensor can only measure the size of pure torque, can not withstand and measure the axial load (thrust and pull), so a new method that can simultaneously measure the axial load and torque on the rotating shaft is needed

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