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Method and device for measuring axial assembly clearance of motor bearings

A technology of motor bearing and measurement method, which is applied in the direction of measurement device, mechanical bearing test, and optical device, etc., can solve the problems of low accuracy, low efficiency, and easy bearing damage of manual measurement.

Active Publication Date: 2021-09-14
CSR ZHUZHOU ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to propose a high-precision, automatic motor bearing assembly clearance measurement method and device to solve the problems of low accuracy, low efficiency, and easy damage to the bearing due to the deficiencies of the existing technology.

Method used

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  • Method and device for measuring axial assembly clearance of motor bearings
  • Method and device for measuring axial assembly clearance of motor bearings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, the tested motor bearing assembly axial clearance measuring device includes the tested motor displacement device and the laser measurement device, wherein the tested motor displacement device includes the main base 1, the flange plate 2, the displacement plate 3 and the Fastening frame 32. The main base 1 is provided with a servo motor, the servo motor is connected to the flange 2, and the displacement plate 3 is connected to the flange 2, and then the support 31 and the fastening frame 32 are fixedly connected to the displacement plate 3 superior. The fastening frame 32 is also fixedly connected with the motor casing 4 under test. In order to prevent the motor under test from loosening between the fastening frame 32 and the motor casing 4 under test, the fastening frame 32 will be in contact with the motor casing 4 under test. Multiple parts are fixedly connected.

[0037] The laser measurement device includes a laser transmitter 7 and a l...

Embodiment 2

[0040] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that the laser measuring device in this embodiment is a reflective laser sensor 8, and the reflective laser sensor 8 is provided with a laser emitting device and a laser receiving device, and the laser emitting device It is distributed side by side with the laser receiving device in the reflective laser sensor 8 . The motor under test is placed vertically, and when the axial direction of the motor under test is consistent with the vertical direction, the reflective laser sensor 8 is directly above or directly below the rotating shaft 5, and the laser emitting device and the laser receiving device are placed on the rotating shaft 5 respectively. both sides of the central axis. In order to distinguish the laser transmitter 7 and the laser receiver 6 in the first embodiment, the laser transmitter 7 and the laser receiver 6 in the reflective laser sensor 8 in this embodiment are replaced...

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Abstract

A method for measuring the axial assembly clearance of motor bearings. The motor is placed vertically so that the axial direction of the motor is consistent with the vertical direction, and the motor casing is fixed on the motor displacement device, and the motor displacement device is set Laser measuring device, start the laser measuring device to measure the position of the motor shaft in the vertical direction for the first time; start the motor displacement device to rotate the motor 180 degrees around the direction perpendicular to the motor axis, and then use the laser measuring device to measure the position of the motor shaft. The position of the rotating shaft is measured in the vertical direction for the second time, and the difference between the values ​​measured in the vertical direction of the two rotating shafts is calculated, so as to obtain the axial assembly clearance of the motor bearing. The invention uses a laser measuring device to scan the position of the rotating shaft before and after the rotation and calculates the axial assembly clearance, which has the advantages of high precision, high efficiency, and no damage to the bearing.

Description

technical field [0001] The invention relates to a measuring method and a measuring device, in particular to a measuring method and a measuring device for motor clearance. Background technique [0002] The existing clearance measurement operation of the bearing assembly of the traction motor basically adopts a semi-automatic method. The motor rotor is lifted by hydraulic mechanism, electric mechanism, crown block, etc. to realize the displacement of the rotor within the range of bearing clearance. The displacement was measured and transcribed manually by means of manual reading and metering. [0003] The existing vertical motor uses the "shaft lifting method" to measure the axial clearance of the bearing assembly. Use hydraulic mechanism, electric mechanism, crown block, etc. to lift the rotor of the motor to realize the axial displacement of the rotor within the range of bearing clearance. Monitoring is carried out on the end face of the rotating shaft, and a gauge is use...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/14
CPCG01B11/14G01M13/04
Inventor 杨学军郑宇华韦在凤
Owner CSR ZHUZHOU ELECTRIC CO LTD
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