Bearing service performance and service life testing device

Abstract

The invention belongs to the field of bearing service performance testing, and particularly relates to a bearing service performance and service life testing device. A testing device main support is fixed on a testing device base, a driving system stator is installed in an inner cavity of the testing device main support, a driving system rotor and a tested bearing are installed on a main shaft, and the main shaft horizontally penetrates through the inner cavity of the testing device main support; a bearing support ring is arranged between an outer ferrule of a tested bearing and an inner cavity of a main support of the testing device, an axial loading mechanism of the tested bearing is installed on the main support of the testing device, and the axial loading mechanism of the tested bearing corresponds to the bearing support ring. A tested bearing radial loading mechanism and a main shaft vibration monitoring mechanism are arranged on the testing device base and on the two sides of the testing device main support respectively. Interference factors of many testing devices are avoided, and the service performance of the tested bearing is truly reflected. In addition, an unpredictable extra load is prevented from being brought to the transmission main shaft, and the accuracy of subsequent data analysis is ensured.

Description

technical field [0001] The invention belongs to the field of bearing service performance testing, in particular to a bearing service performance and life testing device. Background technique [0002] The existing bearing service performance test device mainly adopts: 1) direct drive electric spindle through the coupling, 2) the motor is driven through the pulley, the two driving modes provide power to the test module, and the standard bearing contact type provides power to the test spindle. Radial loading, contact the outer ring of the bearing under test through the vibration sensor, and obtain the vibration of the bearing under test during operation. It brings interference factors to the test system. Each signal monitored includes the influence of multiple components, and the information reflected by the signal cannot represent the service performance of the bearing under test. At the same time, the transmission main shaft is driven by a coupling or a pulley, which will br...

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Problems solved by technology

[0002] The existing bearing service performance test device mainly adopts: 1) direct drive electric spindle through the coupling, 2) the motor is driven through the pulley, the two driving modes provide power to the test module, and the standard bearing contact type provides power to the test spindle. Radial loading, contact the outer ring of the bearing under test through the vibration sensor, and obtain the vibration of the bearing under test during operation. Bring interference factors to the test system, the monitored signals include the influence of multiple components, and the information reflected by the signals cannot represent the service performance of the tested bearing

At the same time, the transmission main shaft is driven by a coupling or a pulley, which will bring an unpredictable additional load to the transmission main shaft due to lack of coaxiality or self-rotation accuracy. data analysis

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