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Detector for measuring bearing friction torque

A technology for testing devices and friction torque, applied in measuring devices, power measurement, torque measurement, etc., can solve problems that do not involve bearing lubrication conditions and preload conditions, have no angular contact bearing friction torque, and cannot obtain bearing friction conditions, etc. question

Inactive Publication Date: 2007-10-10
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, Chinese patents: the test methods and devices for bearing friction torque provided by patent numbers 200610052086.8, 200510049805.6, 200410052708.8, 03242670.4, etc. have a common defect, that is, they do not involve the lubrication conditions and preload conditions in the actual work of the bearings. , so the friction conditions during the actual working process of the bearing cannot be obtained
Related platforms such as vacuum ball-on-disk friction testing machine and bearing component life testing device have been developed abroad, but most of them solve specific problems from an engineering perspective and according to the special requirements of the project itself. In a sense, the relevant test data also belong to the project. Technical secrets, difficult to find in published articles
Therefore, there is currently no test setup for the frictional torque of angular contact bearings for space applications

Method used

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  • Detector for measuring bearing friction torque
  • Detector for measuring bearing friction torque

Examples

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Embodiment Construction

[0010] Below in conjunction with accompanying drawing and embodiment the present invention will be described in further detail:

[0011] The tested bearing 2 in this embodiment is two angular contact bearings connected in DB mode, and the bearing is composed of an outer ring 201 , an inner ring 202 and a ball 203 embedded in the middle. The inner ring between the two bearings is separated by the inner retaining ring 3, and the outer ring between the two bearings is separated by the outer retaining ring 4.

[0012] During the test, the tested bearing 2 is placed in the groove body formed by the inner shaft 1 and the outer shell 5, and the sealing cover 6 is fixed on the inner shaft 1 with screws 16, and a bearing is placed between the inner shaft 1 and the sealing cover 6. The thickness of the preloaded gasket 15 can be determined according to the magnitude of the preload force applied to the bearing, and make it abut against the inner ring 202 of the tested bearing. The inner...

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Abstract

A test device used for measuring frictional torque of bearing is prepared for driving internal ring of measured bearing to rotate together when internal shaft is driven to rotate by motor converting torque signal of said ring to force signal of driving pin under action of friction torque between internal and external ring on measured bearing, converting force signal to be strain signal of cantilever, carrying out measurement by stress-strain transducer to convert strain signal to be electric signal and carrying out conversion and regulation on said electric signal by strain collection-analysis system for realizing accurate test on frictional torque.

Description

technical field [0001] The invention relates to a test device for bearing friction torque, in particular to a high-precision, real-time on-line test device for the friction torque of a space precision angular contact bearing under certain rotational speed, lubrication and preload conditions. Background technique [0002] Moving parts are widely used in aerospace satellites and remote sensing instruments to complete specific functions. With the in-depth research on the friction and lubrication of space rotating mechanisms, further analysis and research on on-orbit faults and a large number of space and ground practices have proved that bearings are key parts that restrict the life and reliability of space moving parts, and have a great impact on bearing performance. Testing and evaluation are therefore crucial. Bearing friction torque is one of the important parameters reflecting bearing performance, especially the particularity of bearing friction torque in the space applic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L3/10
Inventor 李立斋刘晓华何彬峰
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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