A non-contact torque measuring device with variable speed function

Abstract

The invention discloses a non-contact torque measuring device with variable speed function. The measuring device comprises: a measuring module, a permanent magnet rotor, a squirrel cage rotor, a magnetic field modulation ring, a driving end and a driven end; the permanent magnet The rotor is connected to the driving end, the squirrel cage rotor is connected to the driven end, and the torque of the permanent magnet rotor is transmitted to the squirrel cage rotor; the permanent magnet rotor, the magnetic field modulation ring and the The squirrel-cage rotors are nested sequentially from outside to inside and installed concentrically; the measurement modules are wirelessly connected to the permanent magnet rotor and the squirrel-cage rotor respectively, and the measurement modules are used to measure the permanent magnet rotor and the squirrel-cage rotor. The rotational speed of the squirrel cage rotor, and calculate the torque between the permanent magnet rotor and the squirrel cage rotor according to the rotational speed and torque transfer ratio of the permanent magnet rotor and the squirrel cage rotor. It can realize stepped speed regulation, integrates the speed change function, coupling function and torque measurement together, has no maximum speed restriction, and can realize high-speed operation.

Description

technical field [0001] The invention relates to the field of torque measuring devices, in particular to a non-contact torque measuring device with a speed changing function. Background technique [0002] At present, most torque measuring devices measure the torque by measuring the strain of the strain gauge, so the measuring equipment is installed between the driving end and the driven end, which is difficult to install in many narrow places; On the one hand, a good mechanical centering is required, otherwise, it is easy to cause damage to the device under test or the measuring device during high-speed rotation, and the mechanical centering 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. In many measurement test benches, gearboxes are required for speed change, while mechanical gearboxes require lubrication and cooling, require maintenanc...

AI Technical Summary

Problems solved by technology

[0002] At present, most torque measuring devices measure the torque by measuring the strain of the strain gauge, so the measuring equipment is installed between the driving end and the driven end, which is difficult to install in many narrow places; On the one hand, good mechanical centering is required, otherwise, it is easy to cause damage to the device under test or the measuring device during high-speed rotation, and the mechanical centering 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

In many measurement test benches, gearboxes are required for speed change, while mechanical gearboxes require lubrication and cooling, long-term use requires maintenance, and are prone to fatigue damage

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