Cylinder roller bearing birotor testing machine shafting structure

Abstract

A cylinder roller bearing birotor testing machine shafting structure is arranged in a bearing testing machine, and comprises an inner ring rotor shaft and an outer ring rotor shaft; a tested bearing is fixedly sleeved on a test end of the inner ring rotor shaft, and the outer end is pressed in an inner hole of an outer ring rotor shaft test end; the inner ring rotor shaft is also sleeved by a first support bearing pack and a radial loading bearing; the outer ring rotor shaft is also sleeved by an accompany bearing and a second support bearing pack; the accompany bearing and the radial loading bearing are symmetrical with respect to the tested bearing; the second support bearing pack and the first support bearing pack are symmetrical around the tested bearing; the first and second support bearing packs respectively comprise two angle contact bearings arranged in parallel, wherein the one close to the tested bearing is the support bearing, the other one is the axial loading bearing, and an isolation sleeve is arranged between the support bearing and the axial loading bearing. The cylinder roller bearing birotor testing machine shafting structure is scientific in structure, can effectively improve testing speed, and is wide in application scope.

Description

technical field [0001] The invention relates to a shafting structure of a bearing testing machine, in particular to a shafting structure of a cylindrical roller bearing double-rotor testing machine. Background technique [0002] Bearings are key basic components in the manufacture of various equipment, and their quality directly determines the performance, reliability and life of the equipment; due to the harsh working environment and complex load conditions of the bearings, it must be long enough or even The whole life cycle of equipment is maintenance-free, etc. During the design, development and manufacturing process, the bearing must be verified on the testing machine for the corresponding simulated working conditions to provide reliable test data for research, design, manufacture and use, and for the bearing. Design, manufacture and use provide the basis. The R&D, design, manufacture and testing technology of high-temperature and high-speed precision inter-axial bearin...

AI Technical Summary

Problems solved by technology

The R&D, design, manufacture and testing technology of high-temperature and high-speed precision inter-axial bearings are mainly monopolized by a few foreign multinational companies. The research and development of such testing machines in my country began in the 1970s and 1980s. Restricted by other factors, the inner and outer diameters of test bearings are limited to medium and small sizes, and the limit speed is also low, which cannot meet the test requirements of large diameter, high temperature, high speed inter-shaft bearings.

[0003] Most of the existing bearing testing machines adopt a single shaft structure, and the shaft is connected with the inner ring or outer ring of the test bearing, which can be easily realized on the testing machine The simulation test of bearing rotation and loading form, but this kind of bearing testing machine has many shortcomings

Because it can only be fixed with the inner ring or the outer ring, when the test bearing needs the inner ring and the outer ring to rotate at the same time, the testing machine is not applicable

Although there are also some double-rotor testing machines that can rotate the inner and outer rings of the bearing at the same time, they can only test small-diameter, low-speed bearings, and cannot test large-diameter, high-speed, high-oil bearings.

[0004]In the bearing test, the test speed is a very important parameter. The test machine in the prior art is limited by the design and manufacture level of the shaft system and the structural form of the loading device. The test speed can only reach about 15,000rpm, and it is impossible to test large-scale, bearings with inner and outer rings rotating at the same time, high temperature, and high-speed operation

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