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Device and method for testing service life of knuckle bearing by using air pressure loading

A technology of life test device and joint bearing, which is applied in the direction of mechanical bearing testing, measuring device, testing of mechanical parts, etc., can solve the problems of complex structure, large force value fluctuation, unfavorable low air pressure environment, etc., and achieve a small range of pressure changes , Loading force fluctuation is small, the effect of simple structure

Pending Publication Date: 2022-08-05
ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The force value of the spring load fluctuates greatly without feedback, and the structure is complex with feedback
Hydraulic loading has a large loading force, but the structure is complicated, and there is inevitably leakage of hydraulic media, which is not conducive to maintaining a low-pressure environment

Method used

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  • Device and method for testing service life of knuckle bearing by using air pressure loading
  • Device and method for testing service life of knuckle bearing by using air pressure loading
  • Device and method for testing service life of knuckle bearing by using air pressure loading

Examples

Experimental program
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Effect test

Embodiment 1

[0038] This embodiment provides a life test device for a spherical plain bearing using air pressure loading, especially for the life test of a film type self-lubricating radial spherical plain bearing, such as figure 1 As shown, it includes a space environment simulation part, a test part and a control part. The space environment simulation part is used to simulate the space environment during the test process, such as simulating high and low temperature, atomic oxygen irradiation, ultraviolet irradiation, proton irradiation, etc.; the control part It is mainly composed of a control device 14 and a control line 15, which are used for the operating conditions of the test device, collecting the signals of the sensors and displaying the changing law of the data.

[0039] The specific structure of the life test device is as follows:

[0040] like figure 1 and figure 2 As shown, the space environment simulation part includes a vacuum chamber 8, a vacuum device 10, a temperature ...

Embodiment 2

[0063] This embodiment provides a life test method for a spherical plain bearing using air pressure loading. Using the test device described in the first embodiment, the inner diameter of the film type self-lubricating radial spherical plain bearing is 10 mm, the width of the outer ring is 8 mm, and the cylinder is filled with 1 standard atmospheric pressure gas, the inner diameter of the cylinder is 80mm, the test vacuum condition is 1×10-4Pa, and the loading load is about 502.4N, as an example to describe in detail, including the following steps:

[0064] Step 1: According to the required load size, according to the formula F=(P 1 -P 2 )×S (F is the load, P 1 is the pressure inside the cylinder, P 2 For the pressure of the vacuum chamber, S is the area of ​​the cylinder) to obtain the required diameter of the cylinder.

[0065] Step 2: Install the cylinder in the vacuum chamber;

[0066] Step 3: Install the film type self-lubricating radial spherical plain bearing at the...

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Abstract

The invention discloses a joint bearing life test device and method using air pressure loading, and relates to the technical field of life test, the joint bearing life test device comprises a vacuum chamber, the top of the vacuum chamber is provided with irradiation equipment, the vacuum chamber is internally provided with a test main body, one end of the test main body is connected with a power transmission device, and a loading device is arranged below the other end; the test main body comprises a test shaft for mounting the knuckle bearing, the loading device comprises a cylinder body in which a medium is preset, the cylinder body is connected with the pressurizing assembly through a piston, and the piston drives the pressurizing assembly to apply pressure to the test shaft when the pressure in the vacuum chamber is reduced. According to the invention, unbalance of internal and external pressure difference in a vacuum test process is fully utilized, and the pressure intensity change range of the vacuum chamber is small, so that the loading force fluctuation is small; meanwhile, irradiation equipment is arranged, so that the service life of the thin knuckle bearing in a simulated space environment is tested.

Description

technical field [0001] The invention relates to the technical field of bearing life testing, in particular to a device and method for testing the life of a spherical plain bearing using air pressure loading. Background technique [0002] Film type self-lubricating radial spherical plain bearings are often used in space environment conditions. The service performance of self-lubricating spherical plain bearings is closely related to their material properties. With the rapid development of self-lubricating materials, how to evaluate the service performance of film-type self-lubricating radial spherical plain bearings, especially its service life in space environment, is particularly important. Using the spherical plain bearing testing machine that simulates the space environment to carry out the bearing life test is the most direct way to obtain the life of the film type self-lubricating radial spherical plain bearing. [0003] At present, there are a variety of joint bearin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04G01M13/045
CPCG01M13/04G01M13/045
Inventor 马国政王海斗李振张执南魏澳博刘云帆石佳东韩翠红
Owner ARMOR ACADEMY OF CHINESE PEOPLES LIBERATION ARMY
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