Shafting structure of a double-rotor testing machine for angular contact bearings

Abstract

The invention relates to a double-rotor test machine shafting structure for angular contact bearings. The double-rotor test machine shafting structure is arranged on a bearing test machine; the double-rotor test machine shafting structure includes an inner ring rotor shaft and an outer ring rotor shaft; the inner ring of a test bearing sleeves the test end of the inner ring rotor shaft; the outer ring of the test bearing is fixedly connected with the test end of the outer ring rotor shaft; the floating ends of the inner ring rotor shaft and outer ring rotor shaft are fixedly sleeved with two axial loading bearings respectively; the outer rings of the axial loading bearings are fixedly connected with floating bearing seats; and the floating bearing seats are used for baring axial load and applying the axial load to the test bearing through the axial loading bearings, the inner ring rotor shaft or the outer ring rotor shaft. The double-rotor test machine shafting structure provided by present invention has various kinds of loading modes and is applicable to the performance tests of various kinds of angular contact bearings.

Description

technical field [0001] The invention relates to the technical field of bearing testing machines, in particular to a shafting structure of an angular contact 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 bearings a...

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 tested bearing. The simulation test of bearing rotation and loading can be easily realized on the testing machine. However, this bearing There are many deficiencies in the test machine

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

Images