Device and method for testing performance of cold-hot cavity short-distance isolated heavy-load ultrahigh-temperature bearing

Abstract

The invention discloses a device and a method for testing the performance of a heavy-load ultra-high-temperature bearing with short-distance isolated cold and hot cavities. The device comprises a driving module, a torque sensor, a supporting bearing, a radial loading device, a tested bearing, a supporting main shaft, an axial loading device and a heating chamber, the heating chamber is arranged onthe base; the supporting main shaft is supported by a supporting bearing arranged outside the heating chamber, the output end of the driving module is connected with a torque sensor, the torque sensor is connected with the other end of the supporting main shaft arranged outside the heating chamber, and an axial loading device and a radial loading device which are used for loading a tested bearingare installed on the heating chamber. The test method comprises the following steps: 1, installing a required tested bearing; 2, preparing for testing; 3, heating the heating chamber; and 4, axial and radial load testing. The device is compact in structure and reliable in work.

Description

technical field [0001] The invention belongs to the field of bearing testing, and in particular relates to a performance testing device and method for heavy-duty ultra-high-temperature bearings with short-distance isolation between cold and hot chambers. Background technique [0002] Today, my country's aerospace technology is developing and progressing vigorously, and it is constantly putting forward more stringent requirements for spacecraft. Among them, the life and reliability of bearings are the key technologies that restrict the life and reliability of the rotor system and the entire spacecraft. As a typical working condition in the aerospace field, high temperature exceeding 450 degrees poses severe challenges to the material properties and solid lubrication performance of bearing products. At present, there is no complete theoretical research on the failure mode of bearings under high temperature conditions, and the calculation of life and reliability. The bearing p...

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Problems solved by technology

At present, there is no complete theoretical research on the failure mode of bearings under high temperature conditions, and the calculation of life and reliability. The bearing performance has great uncertainty. The assessment of bearing performance needs to ensure that the process bearing works reliably under the corresponding working conditions. And accurately judge the state of the tested bearing

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