Bearing service life test device with movable outer part and static inner part and shaft sleeve service life test device with movable outer part and static inner part

Abstract

The invention discloses a bearing service life test device with a movable outer part and a static inner part and a shaft sleeve service life test device with a movable outer part and a static inner part. The bearing service life test device comprises a supporting seat, a swing shaft, a test bearing, a loading mandrel and a load, the swing shaft is of a hollow structure, a swing opening is formed in the middle of the swing shaft, and the two ends of the swing shaft are installed on the supporting base in a swing mode through accompanying bearings. The loading mandrel is installed on an inner ring of the test bearing, the loading mandrel and the test bearing are installed in the swing shaft, an outer ring of the test bearing is fixedly installed in the swing shaft, and a load is loaded on the loading mandrel from the outside through the swing opening. According to the invention, the swing shaft drives the test bearing or the shaft sleeve to swing, the loading mandrel is fixed on the twoloading plates and is static in the test process, so that the working conditions that the inner ring (mandrel) is static and the outer ring (shaft sleeve) swings in the service life test process of the bearing and the shaft sleeve are closer to the actual working conditions.

Description

technical field [0001] The invention relates to a bearing life test device which is externally dynamic and internally static, and a shaft sleeve life test device which is externally dynamic and internally static. Background technique [0002] In actual use of bearings and bushings, there are many cases where the inner ring (spindle) is stationary and the outer ring (bush) is oscillating. Due to the difficulty in structural design, the existing joint bearing testing machine has a schematic diagram as figure 1 As shown, all adopt the structure in which the outer ring (bush) of the bearing 1 is stationary and the inner ring (mandrel) swings, which cannot completely simulate the working conditions for testing. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a bearing life test device with external movement and internal static and a shaft sleeve life test device with external movement and inte...

AI Technical Summary

Problems solved by technology

[0002] In actual use of bearings and bushings, there are many cases where the inner ring (spindle) is stationary and the outer ring (bush) is oscillating. Due to the difficulty in structural design, the existing joint bearing testing machine has a schematic diagram as figure 1 As shown, the outer ring (bush) of the bearing 1 is static and the inner ring (mandrel) is oscillating, and the test cannot completely simulate the working conditions.

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