Drop tower frictional wear testing device and method

Abstract

The invention discloses a drop tower frictional wear testing device and method. The drop tower frictional wear testing device comprises a load loading mechanism, a static test sample clamping mechanism, a movable test sample clamping mechanism, a friction power device and a rack which is fixedly mounted in a drop cabin of a drop tower, wherein the load loading mechanism, the static test sample clamping mechanism, the movable test sample clamping mechanism and the friction power device are arranged in sequence. The drop tower frictional wear testing device has the advantages of simple structure, relatively high precision, stable structure and strong anti-impact capability; various index designs of the drop tower are completely referred and the device can be mounted in the drop cabin to carry out a micro-gravity drop tower frictional wear testing experiment; a micro-gravity environment can be relatively really simulated and influences, caused by micro-gravity, on frictional wear on the mechanism are explored; the blank of a mechanism frictional wear test under a current real micro-gravity environment is made up and influences, caused by the micro-gravity, on abrasion of a space mechanism are explored better.

Description

technical field [0001] The invention relates to the field of microgravity tribology, in particular to a drop tower friction and wear test device and method. Background technique [0002] Space agencies are mainly affected by environmental factors such as high vacuum, microgravity, alternating temperature, and radiation for a long time during their service in space. With the development of my country's aerospace industry, various space mechanisms are more and more used in space practice, and the research on the friction and wear of mechanisms in space environment is becoming more and more in-depth and extensive. However, the current research mainly focuses on high vacuum, In terms of environmental factors such as variable temperature and radiation, there are still few studies on the influence of microgravity on the friction and wear of moving mechanisms, and it is basically blank in China. [0003] To study the influence of microgravity on the wear of space mechanisms / moving ...

AI Technical Summary

Problems solved by technology

Although the water flotation method, the hanging wire counterweight method, and the air flotation platform can simulate the microgravity environment for a long time, the authenticity is poor

Because the existing simulation test methods such as water tanks, suspensions, and air flotation are not only unable to solve the problem of ground simulation of three-dimensional motion with complex trajectories, but also due to factors such as the flexibility of ropes, friction resistance in equipment, and the inertia of large-mass mechanisms make them effective. sex is not ideal

The drop tower method and aircraft parabolic flight can more realistically simulate the microgravity environment, but the cost of aircraft parabolic flight is high, and the practical scope for institutional research is limited

However, the microgravity time formed by the drop tower method is short, and it must bear a large impact and be limited by the drop environment. At present, there is no special friction and wear testing machine designed for the drop tower experiment in China. The friction and wear under is still in the blank

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