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Motor bearing random dynamic load testing device and testing method

A technology for testing motor bearings and loads, applied in mechanical bearing testing, measuring devices, force/torque/power measuring instruments, etc., can solve problems such as inaccurate testing of motor bearings, and achieve the effect of avoiding interference from environmental factors and human factors

Pending Publication Date: 2022-04-15
CRRC YONGJI ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the random dynamic load test device and test method of the motor bearing in the prior art easily lead to inaccurate test of the random dynamic load of the motor bearing, the present invention provides a new type of random dynamic load test device and test method of the motor bearing

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  • Motor bearing random dynamic load testing device and testing method
  • Motor bearing random dynamic load testing device and testing method
  • Motor bearing random dynamic load testing device and testing method

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Embodiment Construction

[0019] A random dynamic load testing device for a motor bearing, comprising a bearing bush 2 (well known to those skilled in the art, that the bearing bush 2 is fixed on the outer ring of the motor bearing 1 (this motor bearing is the motor bearing used for testing) have a certain thickness in the radial direction), data acquisition system, and the data acquisition system includes piezoelectric dynamometer 3 (known to those skilled in the art: the shape of piezoelectric dynamometer 3 is a hexagonal cylinder shape, and the bottom is At the detection end, at the same time, in order to facilitate the installation of data cables, one of the side walls of the hexagonal cylinder is provided with a cylindrical cable interface end 18) whose axial direction is perpendicular to the axial direction of the hexagonal cylinder, signal adjustment Instrument 19, dynamometer data cable 16 and supporting data collector 17, there are four rings arranged on the end face of the bearing bush 2 along...

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Abstract

The invention relates to a motor bearing, in particular to a motor bearing random dynamic load, and specifically relates to a motor bearing random dynamic load testing device and a testing method. In order to solve the problem that a random dynamic load test device and a test method of a motor bearing in the prior art are easy to cause inaccurate random dynamic load test of the motor bearing, the invention provides a novel random dynamic load test device of the motor bearing, which comprises a bearing bush provided with four positioning holes and an adjusting through hole, a dynamometer fixing assembly is arranged in each positioning hole; a dynamometer adjusting assembly is arranged in each adjusting through hole and comprises an adjusting block, the adjusting block is located between the upper end face of the piezoelectric dynamometer and the side wall of the upper portion of the adjusting through hole, and the face, making contact with the adjusting through hole, of the adjusting block is an inclined face. According to the testing device, the piezoelectric dynamometer can be in direct contact with the outer ring of the motor bearing, and the pretightening force can be adjusted through the inclined surface on the adjusting block, so that the testing result is more accurate.

Description

technical field [0001] The invention relates to a motor bearing, in particular to a random dynamic load of a motor bearing, in particular to a random dynamic load testing device and a testing method for a motor bearing. Background technique [0002] In recent years, with the development of rail transit in the direction of high speed and heavy load, the motor bearings that provide power traction for rail transit have frequent failures, and the motor bearing is the core component of the traction motor, which plays the role of connecting the rotor of the rotating part and the stator of the fixed part. The reliability of the motor bearing determines the reliability of the traction motor. In addition to the design and manufacture of the bearing itself, the most critical factor in determining the reliability of the motor bearing is the actual load carried by the bearing. The load of rail transit motor bearings in the operating environment usually refers to random dynamic loads. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/04G01L5/00
Inventor 王金平石永进刘冠芳秦转丽王涛张航
Owner CRRC YONGJI ELECTRIC CO LTD
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