Device for measuring friction moment of rotating pair

Abstract

The invention provides a device for measuring friction moment of a rotating pair. The device comprises a bracket, a support sleeve, an inner baffle plate, an outer baffle plate, a chuck, a pendulum rod, a pendulum bob, a baffle plate screw, a plurality of abutting screws and an angle sensor; the device has the advantages that the device for measuring the friction moment of the rotating pair is proposed, and the device is based on the principle of energy conservation, has high measurement precision, small error, simple structure and convenient operation, and is particularly suitable for on-siteinspection.

Description

technical field [0001] The invention relates to a technique for measuring the friction torque of a rotating pair, in particular to a device for measuring the friction torque of a rotating pair. Background technique [0002] In mechanical rotation, friction torque is an important factor affecting the life of parts and equipment reliability and accuracy. Friction torque will cause wear and temperature rise of the rotating pair, reduce life and work quality, and even cause burns on the surface of rotating parts in severe cases. Damage the parts and affect safety. In addition, for precision instruments, the friction torque will affect the accuracy of the device, such as the rolling bearing in the aviation gyroscope, the friction torque will affect the accuracy of the heading indication. [0003] In the prior art, most of the methods used to detect the friction torque of the rotating pair are based on the "balance method". The driven part rotates, and then drives the active part...

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Problems solved by technology

[0002] In mechanical rotation, friction torque is an important factor affecting the life of parts and equipment reliability and accuracy. Friction torque will cause wear and temperature rise of the rotating pair, reduce life and work quality, and even cause burns on the surface of rotating parts in severe cases. Damage the parts and affect safety. In addition, for precision instruments, the friction torque will affect the accuracy of the device, such as the rolling bearing in the aviation gyroscope, the friction torque will affect the accuracy of the heading indication

[0003] In the prior art, most of the methods used to detect the friction torque of the rotating pair are based on the "balance method". The driven part rotates, and then drives the active part to rotate, and the stress generated by the frictional moment between the driven part and the driven part will act on the driven part, and the driven part will keep the force due to the resistance of the load cell. At rest, the force sensor can measure the tangential stress P on the follower, and finally obtain the friction torque through calculation; the existing friction torque measuring instruments based on the balance method are not very accurate, especially for small friction Sassafras moment, measurement accuracy and stability are very low

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