A torque measuring device

Abstract

The invention discloses a measuring device for torque. The measuring device comprises a measuring module, an electromagnetic coupling, an active end, and a driven end. The electromagnetic coupling comprises a squirrel cage rotor and a permanent magnet rotor. The squirrel cage rotor is disposed coaxially with the permanent magnet rotor, and a gap is disposed between them. One of the squirrel cage rotor or the permanent magnet rotor is connected to the active end, and the other is connected to the driven end. The driving end rotates to drive the driven end to rotate. The measuring module is configured to obtain the rotational speeds of the squirrel cage rotor and the permanent magnet rotor, and calculate the torque transmitted between the active end and the driven end according to the rotational speeds of the squirrel cage rotor and the permanent magnet rotor. The electromagnetic coupling in the measuring device for torque can realize the coupling function without precise alignment, andthe installation and maintenance are simple and convenient.

Description

technical field [0001] The invention relates to the field of torque measurement, in particular to a torque measurement device. Background technique [0002] At present, most of the torque measuring devices measure the torque by measuring the strain of the strain gauge. Therefore, the measuring equipment is installed between the driving end and the driven end, which is difficult in many occasions with small spaces. Installation; on the other hand, a good mechanical alignment is required, otherwise, it is easy to cause damage to the equipment under test or the measuring equipment when rotating at high speed, and the mechanical alignment is cumbersome and time-consuming. At the same time, the strain gauge used for torque measurement is easily damaged by external force or harsh environment, and it is difficult to repair. Especially in high-speed testing, the dynamic balance characteristics of the coupling and the quality of the mechanical alignment have a great influence on the...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the torque measuring devices measure the torque by measuring the strain of the strain gauge. Therefore, the measuring equipment is installed between the driving end and the driven end, which is difficult in many occasions with small spaces. Installation; on the other hand, good mechanical alignment is required, otherwise, it is easy to cause damage to the equipment under test or measuring equipment during high-speed rotation, and the mechanical alignment is cumbersome and time-consuming

At the same time, the strain gauge used for torque measurement is easily damaged by external force or harsh environment, and it is difficult to repair

Especially in high-speed testing, the dynamic balance characteristics of the coupling and the quality of the mechanical alignment have a great influence on the vibration and noise of the system, and at the same time reduce the accuracy of the torque measurement results

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