Interface friction property monitoring-based rolling-sliding friction life cycle test device

Abstract

The invention relates to an interface friction property monitoring-based rolling-sliding friction life cycle test device. A high-speed electric spindle on a support lifting platform is connected with a torque sensor; one end of the torque sensor is connected with an exchangeable rolling body in a measured object; two ends of the rolling body are provided with rolling bearings; the rolling bearings area arranged in a vertical guide rail; a pressing plate is arranged above the rolling bearings; a groove for accommodating a ball is arranged on the upper surface of the pressing plate; the upper part of the ball contacts with the fulcrum plane of a pressing rod; a lever is arranged on an upright column; the tail end of the lever is connected with the nut of a sensor on a support through a steel wire rope; one end of the support is provided with a low-speed motorized spindle; and the front end of the low-speed motorized spindle is equipped with the bearing inner ring of the measured object. With the test device of the invention adopted, the actual working condition of each roller and a bearing inner ring in the operation process of a cylindrical roller bearing can be simulated; the cause of abrasion caused by the change of interface contact is obtained; and a reliable data guarantee and technical support can be provided for the life cycle health condition monitoring and condition-based repair of the key friction pair of a rolling bearing.

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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