A Yunbo Torque Sensor

Abstract

The invention relates to a Yunbo torque sensor, which includes: a torque sensor housing assembly, a torque shaft assembly, a cantilever beam group force measuring assembly and a base assembly; the torque shaft assembly is fastened on the torque shaft (1 The thrust sleeve on the ) and the force transmission sleeve on the torque shaft (1) slide axially to convert the torque angle ψ into the axial displacement variation ΔL of the small parts of the force transmission sleeve, and further pass the axial displacement of the force transmission sleeve The change ΔL acts on the cantilever sheet beam of the force measuring component of the cantilever beam group to realize the real-time output of torque. The present invention is based on the principle technology of strain gauge torsion measurement, and adopts the technical solution of the new concept of "torque shaft does not stick strain gauge", which solves the pain point requirements of small volume, high speed and long life of the torque sensor.

Description

technical field [0001] The invention relates to a sensor; specifically, it is a Yunbo torque sensor with a brand-new technical solution; it belongs to the technical field of modern sensors. [0002] technical background [0003] The torque sensor products in the prior art usually fall into three categories: phase difference torque sensor, slip ring torque sensor and electromagnetic coil torque sensor. [0004] The phase-difference torque sensor in the prior art has been gradually eliminated due to its bulky size and poor torque measurement accuracy in low-speed and high-speed regions. [0005] Due to the dynamic friction of the conductive ring in the existing slip ring torque sensor, it is easy to cause heating and wear of the conductive ring assembly; especially when the domestic slip ring torque sensor rotates at a speed exceeding 3000 rpm, the use of the sensor It is difficult to maintain a lifespan of about one year; but its small size is its biggest market advantage. ...

AI Technical Summary

Problems solved by technology

[0004] The existing phase-difference torque sensor has been gradually eliminated due to its bulky volume and poor torque measurement accuracy in low-speed and high-speed areas

[0005] Due to the dynamic friction of the conductive ring in the existing slip ring torque sensor, it is easy to cause heating and wear of the conductive ring assembly; especially when the domestic slip ring torque sensor rotates at a speed exceeding 3000 rpm, the use of the sensor The lifespan is difficult to maintain for about a year; but the small size is its biggest market advantage

[0006] The electromagnetic coil type torque sensor of the prior art uses an open-loop magnetic circuit structure instead of the conductive ring assembly, but the reluctance of the magnetic flux between the air-gap interface layers becomes larger, so that the electrical energy of the primary coil is coupled to the electrical energy of the secondary coil low conversion efficiency

In addition: the non-closed magnetic circuit is prone to electromagnetic radiation and electromagnetic interference from the outside world and other technical defects, and the reactance Z value of the electromagnetic wire coil is large, the frequency response speed is slow, and it is difficult to achieve real-time measurement of high-speed torque. The volume and shape of the sensor are several times larger than the slip ring torque sensor

[0007] Both the slip ring type torque sensor and the electromagnetic coil type torque sensor use the principle torque measurement technology that the strain gauge is pasted on the torque detection shaft: so the technical pain point of [static and dynamic electric energy coupling] cannot be avoided

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