High-precision actuators in a thermal vacuum environment
A thermal vacuum, high-precision technology, applied in the direction of measuring devices, engine components, engine sealing, etc., to prevent bending and improve test accuracy
Active Publication Date: 2015-12-30
HAIYAN XINHUA ELECTRIC APPLIANCE
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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 transmission device in a thermal vacuum environment that eliminates friction and is not affected by the deformation of the measured piece
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[0019] The present invention will be further explained below in conjunction with the drawings.
[0020] Attached figure 1 with 2 , A high-precision transmission device in a thermal vacuum environment, including a transmission shaft 21, an air bearing sleeve, a non-magnetic seat 19, a locking device, a magnetic core assembly, a thermal vacuum tank 27 and the tested part 6. The transmission shaft 21 passes through two An air bearing sleeve is connected to the non-magnetic seat 19, which includes a first air bearing sleeve 201 and a second air bearing sleeve 202. The magnetic core assembly, the first air bearing sleeve 201, and the second air bearing sleeve 202 are sequentially set in the transmission On the shaft, the magnetic core assembly and the first air bearing sleeve 201, the first air bearing sleeve 201 and the second air bearing sleeve 202 are separated by a certain distance respectively, and the transmission shaft 21 is separated from the first air bearing sleeve 201 and th...
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The invention discloses a high-precision transmission device under a thermal vacuum environment and relates to the field of thermal vacuum experimental devices. A magnetic core component mounted on a transmission shaft in a sleeving manner is adopted for sealing; two air floatation sleeves are mounted on the transmission shaft in a sleeving manner; a stable air film can be formed on the transmission shaft through the air supply by radial air inlets formed in a nonmagnetic seat; the two air floatation sleeves are arranged at an interval so as to form air floatation support to the transmission shaft and prevent the transmission shaft from being bent; since an air floatation device has the advantage of zero friction, the influence of the friction of a common bearing on torque measurement is avoided, and the test precision is further improved. If a measured piece is hung through the centre of mass, the output shaft of the measured piece is fixedly connected with the transmission shaft through a coupler, the measured piece is deformed under the thermal vacuum environment, by adoption of the hanging to enable the measured piece to be in a free state, the problem of the deflection of a connecting shaft center caused by rigid connection during deformation is avoided, after the thermal vacuum environment is stable, the measured piece is fixed with a lower mounting cross beam through a locking device, and then the loading of torque is performed.
Description
Technical field [0001] The invention relates to a high-precision transmission device in a thermal vacuum environment. Background technique [0002] Thermal vacuum test refers to a test that inspects the performance and function of the test piece under specified vacuum and thermal cycling conditions. The thermal vacuum test not only requires a vacuum simulation system that can simulate the vacuum environment of outer space, but also a device that can drive or load the equipment to simulate the drive and load of the mechanism, and it also needs to have real-time high-precision measurement of the torque of the equipment , Rotation angle and speed and other information. [0003] In the thermal vacuum test of torsional loading of the DUT, the reliability of the sensor and power equipment is reduced, the service life is shortened, and the test process is difficult to control in the thermal vacuum environment, so the thermal vacuum external simulation system, namely the vacuum tank, is o...
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IPC IPC(8): F16C35/08F16J15/54F16J15/43G01M99/00
Inventor 孙建辉周丹锋
Owner HAIYAN XINHUA ELECTRIC APPLIANCE