A rolling friction life test device based on interface friction performance monitoring

Abstract

A rolling friction life testing device based on interface friction performance monitoring. The high-speed electric spindle on the support lifting platform is connected to the torque sensor; the other end of the torque sensor is connected to the replaceable rolling body in the measured object; There are rolling bearings, the rolling bearings are placed in the vertical guide rail and a pressure plate is placed above; there is a groove for placing a ball on the surface of the pressure plate, and the top of the ball is in contact with the fulcrum of the pressure rod; the lever is set on the column, and the end of the lever is connected to The nut connection of the sensor on the bracket; the other end of the bracket is provided with a low-speed electric spindle, and the front end of the low-speed electric spindle is installed with the bearing inner ring of the measured object; The actual working conditions of the rings can be obtained to obtain the causes of wear caused by changes in interface contact, and to provide reliable data guarantee and technical support for the health status monitoring and condition-based maintenance of key friction pairs of rolling bearings throughout their life.

Description

technical field [0001] The invention belongs to a rolling-sliding basic performance test device, in particular to a rolling-sliding friction life-span testing device based on interface friction performance monitoring. Background technique [0002] Rolling bearings are an essential part of the load-bearing transmission system of aero-engines, and their performance and quality directly affect the service life and reliability of aero-engines. With the development of rolling bearings in theoretical research, structural design, manufacturing technology, etc., the performance and reliability of bearings have been greatly improved, but at the same time, aviation technology is developing rapidly, and the thrust-to-weight ratio and power of engines are also increasing. The working conditions of the main shaft bearings are developing towards complex and harsh working conditions such as high temperature, high speed and heavy load, which also put forward higher requirements for the perf...

AI Technical Summary

Problems solved by technology

In 2006, Ge Shirong and others invented a patent for a rolling friction and wear testing machine. This testing machine can simulate the friction and wear test under the rolling condition of ring-like friction pairs, but the device system is relatively complicated, and it can only be used for ring-like friction pairs. Effectively simulate the actual friction and wear process of rolling bearings

In 2011, Chen Wei and others invented the patent of high-speed rolling bearing slip device. Li Junning used this experimental device in his doctoral dissertation to study the influence of different slip factors, rotational speed and radial load on the oil film thickness. However, because the loading system operates at high speed The center of the electric spindle is the fulcrum, and it is easy to cause unbalanced load when loading. The higher the load, the more obvious the unbalanced load

In 2014, Wei Jing and others invented a patent for a variable load rolling friction and wear tester. This device changed the loading method and added the lubricating oil temperature control method based on the device invented by Chen Wei, but its friction pair is also limited to Annular friction pairs are not particularly suitable for the actual state simulation of rolling bearings

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