Low-coupling axial and radial combined loading device for rolling bearing and loading method

Abstract

The invention discloses a low-coupling axial and radial combined loading device for a rolling bearing and a loading method, and relates to the loading field of bearing tests. The low-coupling axial and radial combined loading device for the rolling bearing and the loading method aim to solve a problem in the prior art that the transverse friction between contact surfaces of the bearing and the load is high after loading when an axial load and a radial load are applied to a tested bearing simultaneously, the transverse stiffness of the loading device is great, the friction between a loading head in one direction and a test assembly restricts movement of a loading head in another direction, application of the load in the other direction is further affected, loads in one or two directions cannot be completely loaded to the tested bearing, and loading of the loads is caused to be inaccurate. According to the invention, a small oil tank is placed below the bearing, a hydraulic pump extracts oil in the small oil tank, then the extracted oil is injected into a pressure oil inlet, a liquid hydrostatic pressure bearing ability is generated after the oil flows through a liquid hydrostatic pressure orifice, a hydraulic moving disc and a hydraulic static disc are connected through an elastic connecting sleeve, and a coupling effect of loads in different directions is reduced. The loading device and the loading method provided by the invention can be applied to a test device which needs to simultaneously apply two loads which are vertical with each other in direction.

Description

technical field [0001] The invention relates to a load loading device and a loading method for bearings. It belongs to the loading field of bearing test load. Background technique [0002] Rotor test technology is an important part of mechanical system test, and it is the premise of rotor system and supporting bearing life assessment, performance assessment, design and manufacturing parameter verification and reliable application. Sometimes it is necessary to apply axial and radial loads to the rotor system or supporting components during the test. Rolling bearings are the supporting components of the rotor system, and their tests are typical rotor tests. Bearing tests are generally carried out on bearing testing machines. Load simulation is one of the key working conditions of bearing testing during bearing testing machine testing. Whether the loading is accurate or not directly affects the credibility of the test results. Due to the clearance of the bearing and the cont...

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that when the axial load and the radial load are applied to the tested bearing at the same time, the lateral friction force between the bearing and the load contact surface is large after loading, the lateral stiffness of the loading device is large, and the gap between the loading head and the test tooling in one direction The friction force between them restricts the movement of the loading head in the other direction, which in turn affects the application of the load in the other direction, so that the load in one or two directions cannot be fully loaded to the tested bearing, resulting in inaccurate load loading.

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