Non-plug-in shaft torque measuring device

Abstract

The invention relates to a non-plug-in shaft torque measuring device which is formed by the combination of two semicircular main measuring arms, two auxiliary measuring arms, two main conducting rings, two auxiliary conducting rings and four pressure rings. Two ends of a measuring disc are affixed to the outer surfaces at the joints of the inner edges inside the two main measuring arms, and the measuring disc is affixed on a strain disc. The measuring device has the advantages of simple structure and convenient installation. Because of the semicircular structure of each component, the non-plug-in measurement of a shaft torque can be realized without disconnecting the installation structure of a measured shaft and changing the installation state of a measured system, and the accuracy of themeasurement can be improved. The structure is compact after the components are installed, and the annular symmetric system has little effect on the quality eccentricity of the measured shaft, therebysimilarly improving the accuracy of the measurement. The strain disc is affixed to the measuring disc to perform the measurement, only one resistance strain disc is needed to realize the measurementand can be used repeatedly, thus the cost is reduced.

Description

technical field [0001] The invention relates to a measuring device, in particular to a non-inserting shaft torque measuring device. Background technique [0002] At present, the measurement of the transmission shaft torque is mainly carried out by a dynamometer motor or a digital torque measuring instrument. When performing the measurement, both of these two measurement devices need to be installed in the system under test, that is to say, the transmission shaft must be connected to the test system. The installation and measurement process is very cumbersome, and the installation accuracy requirements are also high, otherwise it will affect the measurement results, and these two methods are suitable for testing the drive shaft torque under laboratory conditions. The test cannot monitor the torque of the transmission shaft of the actual running equipment in real time. At present, foreign test instrument companies have developed a non-insert measuring device for measuring sha...

AI Technical Summary

Problems solved by technology

This device realizes the non-insert measurement of torque, but there are the following problems: 1. The strain gauge is directly installed on the surface of the shaft. If the shear strain of the shaft is small, the sensitivity of the strain gauge is required to be high, and the strain gauge can only be used Once, and each measurement needs to use a strain rosette composed of 4 strain gauges, the cost of measurement is higher

2. The device uses battery power and signal wireless transmission, but the battery and signal wireless transmitter need to be fixed on the shaft, which will inevitably cause mass eccentricity and affect the accuracy of measurement

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