SU393634A1 - METHOD OF MEASURING THE MOMENT OF FRICTION OF BEARINGS - Google Patents

Description

one

The invention relates to the field of testing equipment, in particular to methods for testing bearings.

A known method of measuring the friction bearing bearing friction moment, concludes that the test bearings are installed on a shaft located on the bearings, the distance from which the bearings are chosen is chosen from the condition of equality of reactions on the shaft bearings, the loads being tested are radially loaded, The shaft is measured and the total friction moment on the shaft is measured.

The disadvantage of this method is that the total moment of friction of all bearings is determined and it is impossible to use them as test shaft bearings.

In order to use bearing bearings of the proposed method as test subjects, each of the tested bearings is individually loaded, the frictional moment of each tested bearing is measured, and the friction moment of the basic bearings is determined by subtracting the sum of the friction moments of the tested bearings from the total friction moment on the shaft.

FIG. Figure 1 shows schematically an apparatus for carrying out the proposed method; in fig. 2 is an AA section of FIG. one; in fig. 3 - load distribution.

The device comprises an actuator / connected via a bush 2, a current collector 3, a strain-amplifying transducer 4 and a friction torque meter 5 (torsion) with the test shaft 6 and the sliding bearing 7. Shaft 6 is mounted on slide bearing bearings 8 mounted in housing 9. Test bearing 7 is provided with a sleeve Yu with a hard end 11 in contact with the strainer 12 during the measurement.

The test bearing 7 is loaded with the help of the mechanism 13 ..

The tests are carried out as follows.

The test pair 6 and the bearing 7 are mounted on the support bearings 8 in the housing 9. The test bearings are loaded with a radial load, set the rotation of the shaft and measure the moment of friction on the shaft by torsion 5 and the moment of friction of the bearing - tensioner 12.

The distribution of loads in the case of using several tested sliding bearings is explained in FIG. 2. The bearings under test, which can be made of various materials, are loaded with loads of P3, Pt and P3 and - create reactions PI and PS on support bearings. Test bearings are mounted on

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shaft so as to create the same reaction on the thrust bearings, i.e. The moment of friction on thrust bearings is determined by subtracting the sum of the moments of friction of the tested bearings from the moment of friction to the shaft.

Subject invention

A method for measuring the friction bearing friction bearing moment, which consists in placing the tested bearings on the shaft, which are located on the bearing bearings, the distance from which

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choose from the condition of equality of reactions at the thrust bearings of the shaft, load the tested bearings with a radial load, rotate the shaft and measure the total friction moment on the shaft, characterized in that, in order to use also the supporting bearings as test subjects, they are individually loaded , the moment of friction of each test bearing is measured, and the moment of friction of the support bearings is determined by subtracting the sum of the moments of friction of the tested bearings from the total moment of friction on the shaft.

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