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Friction torque testing device for rolling bearing at low temperature

A rolling bearing and friction torque technology, which is applied in the field of friction torque testing devices, can solve the problems of high cost, damage to test instruments, complex structure, etc., and achieve the effects of simple structure, low manufacturing cost and simple operation

Inactive Publication Date: 2011-09-07
上海博高科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of friction torque testers at room temperature, equipped with various control systems, and the structure is relatively complicated. It is expensive to test them under harsh ambient temperature conditions, especially for testing the influence of different lubricants on friction torque at low temperature. A large number of repeated tests, repeated changes in temperature difference will easily reduce the accuracy of the test instrument, or even damage the test instrument

Method used

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  • Friction torque testing device for rolling bearing at low temperature
  • Friction torque testing device for rolling bearing at low temperature
  • Friction torque testing device for rolling bearing at low temperature

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0023] ginseng figure 1 , the friction torque testing device for rolling bearings at low temperature comprises a support (2) and a pair of tested rolling bearings (12) of the same type, characterized in that the pair of tested rolling bearings (12) of the same type are installed on a shaft The two ends of (10) are put into a sleeve (9), and the two ends are respectively fixed on the described support (2) with the left end cover (7) and the right end cover (13), and the sleeve (9) ) is drilled near the rolling bearing (12) to be tested and placed into a temperature sensor (3) to measure the temperature change of the bearing, and the protruding end of the shaft (10) is fixed with two set screws (15) to a balance wheel ( 14), the two ends of the set screw (15) are equipped with two balance nuts (16) to fine-tune the eccentricity of the balance wheel (14), a thin rope goes around the balance wheel (14) and a pallet is suspended at both ends ( 17), when the weight (18) is put into...

Embodiment 2

[0025] This embodiment is basically the same as Embodiment 1, and the more specific detailed structure is as follows:

[0026] This example is: see figure 1 , the friction torque test device for rolling bearings under low temperature, including the cold control box (1) for controlling the ambient temperature, see figure 2 , The sleeve is drilled to be close to the bearing, and the temperature sensor PT100 (3) is pasted in the hole, and the lead wire is connected to a digital display to display the temperature change. see image 3 A pair of test rolling bearings (12) of the same type are installed on both ends of the shaft (10) with prepared special tooling, the shaft (10) is closely matched with the test bearing (12), the shaft shoulder is positioned for the bearing, and the height of the shaft shoulder is low The rib size of the inner ring of the bearing.

[0027] The above-mentioned device is put into the sleeve (9), and the outer ring of the test bearing (12) is loosely...

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Abstract

The invention relates to a friction torque testing device for a rolling bearing at low temperature. The friction torque testing device comprises a support and a pair of objective rolling bearings of same type, wherein the pair of objective rolling bearings of same type is mounted at two ends of a shaft so as to be placed in a sleeve, two ends of the sleeve are respectively located by a left end cover and a right end cover so as to be fixed on the support, and a temperature sensor is placed in a part of the sleeve near a drilling part of the objective rolling bearing so as to test the temperature variation of the bearing; an extending end of the shaft fixes a balance wheel through two set screws, two ends of each set screw are provided with two balance nuts to fine adjust the eccentricity of the balance wheel; a string comes around the balance wheel, and two trays are respectively hung on the two ends of the string; when weights are placed in the trays, a starting friction torque of the objective rolling bearing can be tested as soon as the balance wheel turns. The friction torque testing device for the rolling bearing at low temperature can effectively control certain pre-tightening force to test performance indexes of the friction torque of the bearing with different lubricants under different radial loads at low temperature; and the friction torque testing device is simple in structure, low in manufacturing cost and convenient to operate, and can repeatedly test the friction torque at harsh low temperature.

Description

technical field [0001] The invention relates to the field of rolling contact bearings, in particular to a friction torque testing device for rolling bearings at low temperature. Background technique [0002] Rolling bearings are components that support rotating shafts and are widely used in various fields of the machinery industry. Friction torque is a very important performance index of bearings. For some aerospace equipment with large temperature changes, the size and fluctuation of bearing friction torque not only affect the transmission of system energy, but also affect the accuracy of system signal transmission. There are many types of friction torque testers at room temperature, equipped with various control systems, and the structure is relatively complicated. It is expensive to test them under harsh ambient temperature conditions, especially for testing the influence of different lubricants on friction torque at low temperature. A large number of repeated tests, rep...

Claims

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Application Information

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IPC IPC(8): G01L3/00G01M13/04
Inventor 姜绍娜陶德华陈晓阳衷美琳
Owner 上海博高科技有限公司
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