Device and method for testing friction and wear of falling tower ring block

A friction and wear test, drop tower technology, applied in measuring devices, testing wear resistance, instruments, etc., can solve the problems of inability to solve the problem of three-dimensional motion ground simulation of complex trajectories, limited research scope, and unsatisfactory effectiveness. Simple structure, strong impact resistance and stable structure

Pending Publication Date: 2018-03-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 has to withstand large impacts and is limited by the drop environment. At present, there is no friction and wear testing machine suitable for the drop tower experiment. The friction and wear in the environment is blank

Method used

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  • Device and method for testing friction and wear of falling tower ring block
  • Device and method for testing friction and wear of falling tower ring block
  • Device and method for testing friction and wear of falling tower ring block

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A drop tower ring block friction and wear test device, including a frame, a load loading mechanism, a block sample clamping mechanism, a ring sample clamping mechanism and a friction power device;

[0046] The frame is fixedly arranged in the drop cabin of the drop tower, and the frame has a first support plate, a second support plate and a power device fixing seat for installing the friction power device, and the first support plate and the second support plate are arranged up and down respectively;

[0047] The load loading mechanism includes a loading handwheel, a loading screw, a spring pushing mechanism, a loading spring, and a spring mounting seat. The loading handwheel is connected to the loading screw to drive the loading screw to rotate. A threaded through hole is opened on the first support plate for loading The screw rod passes through the threaded through hole of the first support plate, the thread on the outer surface of the loading screw is connected with t...

Embodiment 2

[0060] The difference between this embodiment and Embodiment 1 is that it also includes a friction detection mechanism. The friction detection mechanism includes a baffle plate, a transmission plate and a friction sensor, the baffle plate is fixedly arranged, the transmission plate is fixedly connected with the transmission shaft, and the block sample The mounting seat is installed on the bottom end surface of the transmission shaft. The center of the sample mounting seat is staggered from the shaft center of the transmission shaft. at the contact position.

[0061] Here, the friction sensor is installed on the baffle plate as an example: During the test, the transmission shaft rotates to drive the drive plate to rotate toward the baffle plate, so that the drive plate contacts the friction sensor. After the two are in contact, the friction sensor can Detect the torque generated by the transmission shaft during the test, and convert the measured torque into the corresponding fr...

Embodiment 3

[0063] The difference in this embodiment is that the block sample clamping mechanism also includes a clamping mechanism bearing seat, an upper seat baffle plate, a lower seat baffle plate and a bushing bearing, the clamping mechanism bearing seat is fixedly installed in the mounting hole, and the bushing bearing Set in the bearing seat of the clamping mechanism, the upper baffle and the lower baffle are respectively arranged on the upper opening and the lower opening of the bearing pedestal of the clamping mechanism, the guide bush is installed in the bushing bearing, and the transmission shaft passes through the upper baffle, Guide bushing and lower seat baffle.

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Abstract

The invention discloses a device and method for testing the friction and wear of a falling tower ring block. The device comprises a loading mechanism, a block sample clamping mechanism, a ring sampleclamping mechanism, a friction power device and a frame fixedly arranged in a falling tower falling cabin. The frame is provided with a first support plate, a second support plate and a power device fixing base for installing the friction power device. The first support plate and the second support plate are arranged along a vertical direction. The device can be installed in the falling cabin, cancarry out a micro-gravity falling tower friction and wear experiment, can realistically simulate the micro-gravity environment and can explore the effect of micro-gravity on the friction and wear ofthe mechanism.

Description

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

Claims

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Application Information

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IPC IPC(8): G01N3/56
CPCG01N3/56G01N2203/0026G01N2203/0236
Inventor 屈盛官段勇黄丽满李小强杨超
Owner SOUTH CHINA UNIV OF TECH
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