High-temperature high-speed test method for sealed bearing

Abstract

The invention relates to a high-temperature high-speed test method for a sealed bearing, which comprises the following steps of: firstly designing a testing device, installing two sets of testing accompanying bearings on a testing main shaft, and pretightening through a set of spring and a pressure ring; installing the two sets of testing bearings at the left end and the right end of the testing main shaft, connecting an electric main shaft through a shaft coupling and additionally covering a shield; starting cooling circulating water, adding cooling water into a loading sleeve, starting a hydraulic station, an electric main shaft variable-frequency driving system and a computer control system, applying 20-30 percent of the maximum axial test load and 20-30 percent of the maximum radial test load to the testing bearings, starting the electric main shaft to reach 15-20 percent of the highest rotational speed and running for 15-25 minutes after the heating temperature reaches a set value, and then sequentially adding axial loads and radial loads and increasing the rotational speed of the electric main shaft so as to reach the highest rotational speed when the power consumption current of the electric main shaft tends to be steady; and carrying out computer data processing for the data and images in different time periods of the whole testing process and working out a test conclusion.

Description

technical field [0001] The invention belongs to the technical field of bearing tests, in particular to a high-temperature and high-speed test method for sealed bearings. Background technique [0002] Sealed bearings are widely used in various motors, household appliances, mechanical equipment, automobiles, motorcycles, aviation and aerospace, weaponry and other fields, especially grease-lubricated sealed bearings in aviation and aerospace, weaponry and other systems generally require Under the harsh working conditions of high speed, high temperature and heavy load, the lubrication state, rotation accuracy, limit working capacity and reliability level of the bearing directly affect the quality of the supporting main engine. [0003] At present, the experimental research on sealed bearings is mainly carried out on the conventional bearing testing machine to test and evaluate the life, grease leakage, temperature rise and dustproof performance. For the test research and analys...

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Problems solved by technology

However, this technology is still blank in China at present, and the relevant literature has not been reported.

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