Bearing noise testing method without special requirements to testing environment

Abstract

The invention relates to a bearing noise testing method with no special requirement on external environment. A spherical sound isolation cover with a double-hemispherical structure can isolate external sound source; a fixed sound isolation hemisphere 7 is arranged at one end of a transmission strut 11 of a mainshaft 9 by an elastic damping sound isolation pad 19; a movable sound isolation hemisphere 3 is arranged on an axial loader 2; a tested bearing 8 is arranged on a mandril 4 and is sleeved on the mainshaft; the upper part of the fixed sound isolation hemisphere is provided with a fixed rack 6 and a sonic transducer 5; a loading handle 1 controls axial displacement to realize free folding from the movable sound isolation hemisphere to the fixed sound isolation hemisphere; the end part of a loading shaft 21 is fixed with a loading disc 18 which is provided with loading rubber 20 at 120 degrees; a drive motor 12 of a frame 13 is started to drive the mainshaft to rotate at high speed by a strap 10; loading rubber exerts axial force on an outer ring of the tested bearing to prevent the outer ring from rotating; the sonic transducer picks up the produced noise; the noise is processed by a preposed circuit and is transmitted to a computer to process; and a noise change curve and a final testing result are displayed.

Description

technical field [0001] The invention belongs to the technical field of bearing measurement, and in particular relates to a bearing noise testing method and device which do not have special requirements on the testing environment. Background technique [0002] At present, the machinery industry has more and more demands on the measurement of bearing noise, especially in the fields of motors and air conditioners, it is necessary to measure bearing noise. However, the current noise measurement is carried out in a specially built noise room, which has high requirements on the external environment, and the structure of the noise room is complex and costly. Many bearing manufacturers and users do not have noise rooms, which is not suitable for widespread promotion. Therefore, it is of great social significance to develop a low-cost bearing noise test device that does not have special requirements on the external environment and can be moved at any time. Contents of the invention...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome that the existing bearing noise test must be tested in a special noise room, the present invention provides a bearing noise test method that does not have special requirements for the external environment.

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