Device and assembling method for eliminating additional load of torque sensor

Abstract

The invention provides a device for eliminating the additional load of a torque sensor and an assembling method of the device. The torque sensor, a converting shaft, a bearing and a casing are included, output shafts at the two ends of the torque sensor are connected to the converting shaft which is coaxial with the output shafts, the converting shaft is in interference fit with the inner ring of the bearing, and the bearing is mounted in bearing soleplate holes which are arranged at the two ends in the casing. The device has the advantages that the two output shafts of the torque sensor are coupled to the converting shaft which is coaxial with the output shafts, it is ensured that the two ends of the torque sensor are completely coaxial, the other end of the converting shat is coupled to a power source and a driven system, influence of the additional load, caused by rotation of the output shafts at the two ends of the torque sensor, on the sensor is eliminated on the premise that the assembly precision is ensured, the eccentric vibration is reduced, and the measuring precision and using reliability of the torque sensor are improved.

Description

technical field [0001] The invention belongs to the technical field of power and transmission, and in particular relates to a device for eliminating the additional load of a torque sensor. Background technique [0002] In the mechanical transmission system, speed, torque and effective power are three important indicators to measure the performance of the system, among which the effective power is calculated by measuring the speed and torque, which can be used to determine the energy loss of the mechanical system, as A measure of the stability of the system operating conditions. Therefore, it is particularly important to accurately measure the torque and speed of the transmission system. As the core part of the test system of torque and rotational speed measuring instruments, the sensor determines the measurement accuracy of the entire test system. [0003] In the prior art, the measurement of torque usually needs to connect the torque sensor between the power source (such ...

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Problems solved by technology

In addition, the system may be subjected to vibration, shock and other external forces during the transmission process. The interference signals caused by these external loads are superimposed on the measured value, causing the torque value output by the sensor to exceed the limit, the alarm protection device is activated, and the system cannot work normally.

The usual way to solve this problem is to improve the processing and assembly accuracy of the connecting shafts at both ends of the torque sensor to ensure that the coaxiality of the two ends is within a reasonable range. This method increases the difficulty of processing and assembly of the transmission system and prolongs the Debug cycle

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