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Experimental apparatus for testing sliding friction property of friction materials

An experimental device, sliding friction technology, applied in the direction of measuring device, analyzing materials, using mechanical devices, etc., can solve the problem of not specifically measuring the sliding friction properties of friction materials, and achieve the effect of wide loading range, high work efficiency and simple structure

Inactive Publication Date: 2009-09-09
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that there is no experimental device for measuring the sliding friction performance of friction materials in a vacuum and low temperature environment, and to provide an experimental device for testing the sliding friction performance of friction materials

Method used

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  • Experimental apparatus for testing sliding friction property of friction materials
  • Experimental apparatus for testing sliding friction property of friction materials

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Experimental program
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specific Embodiment approach 1

[0007] Specific implementation mode one: as Figure 1~2 As shown, the experimental device for testing the sliding friction performance of friction materials described in this embodiment is composed of a base 1, a transmission device, a loading device, a measuring device and a refrigeration device. The transmission device includes a motor support 2, a motor 3, an elastic coupling Shaft device 4, main shaft 7, axle sleeve 10, bearing block 11 and two bearings 13; Loading device comprises loading bracket 14, loading support plate 15, lever 16, loading pressure bar 17, loading shaft 18, pressure bar bearing 19, Weight plate 22 and connecting rod 23; Described measuring device is made up of bearing bush 8, bearing bush seat 9, sensor pressure bar 20, pressure sensor 21 and sensor support 24; Described refrigeration device comprises copper brush 25, copper brush support 26 and liquid Nitrogen spiral copper tube 27; the motor 3 is affixed to the upper end surface of the base 1 throug...

specific Embodiment approach 2

[0008] Specific implementation mode two: as figure 1 As shown, the motor 3 in this embodiment is a rare earth permanent magnet DC torque motor. Rare earth permanent magnet DC torque motor has the advantages of low speed, large torque and strong overload capacity; compared with DC brush torque motor, it has the advantages of simple structure, high reliability of motor body and maintenance-free. Other components and connections are the same as those in the first embodiment.

specific Embodiment approach 3

[0009] Specific implementation mode three: as figure 2 As shown, the loading compression rod 17 in this embodiment divides the moment arm length ratio of the lever 16 into 1:8. In this way, the weight of the weight can be magnified eight times by the lever 16, and then transmitted to the friction member through the loading pressure rod 17 and the loading shaft 18, so as to load the friction test and facilitate data calculation. Other compositions and connections are the same as those in Embodiment 1 or 2.

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Abstract

The invention relates to an experimental apparatus for testing sliding friction property of friction materials. The invention solves the problem that special experimental apparatuses for testing sliding friction property of friction materials at low temperature under vacuum do not exist. A loading supporting plate is fixedly mounted on the upper part of a loading bracket. One end of a lever is fixed on the upper part of the loading supporting plate, and the other end of the lever is connected with the upper end of a connecting rod. The lower end of the connecting rod is equipped with a scale pan, a loading pressure lever is fixedly mounted on the lever, a pressure lever base is fixed on the lower part of the loading supporting plate, and a guide sleeve on the pressure lever base is equipped with a loading shaft, a bush is fixedly connected with one end of a sensor pressure lever by a bush base, the other end of the sensor pressure lever is in contact with the upper end face of a pressure sensor, and the lower end face of the pressure sensor is fixedly mounted on the upper end face of the base through a sensor bracket. The invention can simulate the friction manners of friction pairs in aviation and astronavigation under normal pressure vacuum, low pressure vacuum and high pressure vacuum, and can measure the frictional coefficients of any two friction materials.

Description

technical field [0001] The invention relates to an experimental device for testing the friction performance of materials, in particular to an experimental device for testing the sliding friction performance of friction materials. Background technique [0002] With the improvement of our country's aerospace industry's understanding of space materials, the country pays more and more attention to the environmental effects of spacecraft materials, and the rapid development of the aerospace industry makes tribological research in vacuum and low temperature environments an urgent need. The research on the tribology of materials in a vacuum and low temperature environment is pioneering and has great practical significance, and corresponding experimental devices are needed to carry out research work in this field. At present, there is no experimental device for measuring the sliding friction properties of friction materials in a vacuum and low temperature environment. Therefore, it ...

Claims

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Application Information

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IPC IPC(8): G01N19/02
Inventor 张锋高海波解志杰宋宝玉
Owner HARBIN INST OF TECH
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