Friction experiment device in thermal vacuum environment

Abstract

The invention discloses a friction experiment device in a thermal vacuum environment. The device comprises a temperature-controllable vacuum box, a loading box, a total mounting bottom plate, a loading end magnetofluid sealing shaft, a third heat insulation coupling, a torque sensor, a first heat insulation coupling, a test piece, a second heat insulation coupling, a driving end magnetofluid sealing shaft, a driving end normal temperature and normal pressure box, a driving device and a loading device. According to the invention, a servo motor can be arranged in a normal-temperature and normal-pressure box formed by fixing the open end surface of the normal-temperature and normal-pressure box and a normal-temperature and normal-pressure box end cover 14 through bolts so that under the condition that the large-torque and high-rotating-speed test requirements can be met, driving and loading outside a vacuum tank are not needed; and when the test is completed, a special vacuum tank does not need to be customized, only the mounting platform needs to be put down, the length of a transmission chain is greatly shortened, and the coaxiality is easy to guarantee.

Description

technical field [0001] The invention relates to the field of driving and loading tests in a thermal vacuum environment, and more specifically relates to a friction test device in a thermal vacuum environment. Background technique [0002] There is a brake applicable to the aerospace field, and the purpose of the device is to decelerate the rotating shaft until it stops rotating. The main working environment of this type of brake is a thermal vacuum environment. Its main principle is: use the friction pair in the brake to generate and prevent the torque of the rotating shaft, so that the target shaft decelerates until it stops rotating. In order to study the performance, life and other characteristics of the brake under different working conditions, different environments, and different steering directions, it is necessary to carry out corresponding simulation tests on the ground. [0003] In order to complete the ground simulation test of the brake, it is necessary to desig...

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the vacuum motor of the existing ground vacuum driving and loading equipment cannot meet the speed, torque and working temperature required for the experiment, and the transmission chain required for external driving and loading of the vacuum box is long and the coaxiality is difficult to guarantee , the required space is large, the loading and unloading has a certain delay, and the corresponding vacuum box needs to be customized. A short transmission chain, high coaxiality, small required space, good heat insulation and fast loading speed are proposed. Tribological Experimental Apparatus in Thermal Vacuum Environment

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