High-precision angle and torque testing device in thermal vacuum environment

Abstract

The invention discloses a high-precision angle and torque testing device in a thermal vacuum environment, and relate to the field of sealing testing devices in a thermal vacuum experiment. The device comprises a transmission shaft, a testing shaft, a to-be-tested element output shaft, a floatation sleeve, a nonmagnetic base, magnetic core assemblies, a thermal vacuum tank and a to-be-tested element. The transmission shaft is sleeved with the floatation sleeve to support the transmission shaft in a floatation mode, and due to the advantage that a floatation device has no friction, influences of friction of bearings on torque measurement are avoided and testing precision is further improved. The first magnetic core assembly arranged on the transmission shaft in a sleeved mode, the second magnetic core assembly disposed between the transmission shaft and the testing shaft in a sleeved mode and an O-type sealing ring seal the thermal vacuum tank, the inside of a heat sink of the thermal vacuum tank is the thermal vacuum environment, the outside of the heat sink of the thermal vacuum tank is a vacuum environment, the outer side of the second magnetic core assembly in the transmission shaft is a normal-temperature environment, the torque is loaded by means of external load equipment loaded on the transmission shaft externally, the angle and the torque of the to-be-tested element are measured by means of an angle measuring device and a torque measuring device, and the angle measuring device and the torque measuring device are loaded on the testing shaft externally.

Description

technical field [0001] The invention relates to a sealing test device under a thermal vacuum experiment, in particular to a high-precision angle and torque testing device under a thermal vacuum environment. Background technique [0002] Thermal vacuum test refers to the test to verify the performance and function of the tested part under the specified vacuum and thermal cycle conditions. The thermal vacuum test not only requires a vacuum simulation system capable of simulating the vacuum environment of outer space, but also requires a device that can drive or load the equipment to simulate the drive and load of the mechanism, as well as real-time high-precision measurement of the torque, Capability of information such as rotation angle and rotational speed. [0003] In the thermal vacuum test of torsional loading on the tested part, due to the thermal vacuum environment, the reliability of sensors and power equipment is reduced, the service life is shortened, and it is diff...

AI Technical Summary

Problems solved by technology

[0006] Aiming at problems such as the deformation of the measured piece and the frictional influence of the magnetic fluid seal transmission device in the thermal vacuum torsion test, the present invention provides a high-precision angle and angle measurement method in a thermal vacuum environment that eliminates friction and is not affected by the deformation of the measured piece. Torque Test Device

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