SU1004801A1 - Method of checking rolling bearing condition by run-out time - Google Patents

Description

(5t) CnOCOB CONTROL OF THE CONDITION OF ROLL BEARINGS BY RUNNING TIME

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The invention relates to the bearing industry and can be used to monitor the condition of rolling bearings over the time of running out.

There is a known method of monitoring the condition of rolling bearings by running out time by bringing them into rotation and determining the parameter characterizing the state of bearings as on coasting 1 | However, the known method has low accuracy and productivity.

The purpose of the invention is to increase the accuracy and performance due to the fact that as a parameter characterizing the state of the bearing on the coasting, its vibration is chosen,

The goal is achieved for 20 due to the fact that according to the method of cont. Rolling bearings condition by running out wheel by bringing them into rotation and determining the parameter characterizing bearing condition on coasting, as a parameter characterizing bearing condition on coasting, record the bearing vibration signal, continuously measure it, convert the resulting b | - in a rectangular impulse, integrate it over time and, comparing the result of integration with a reference rectangular impulse, determine the state of the bearing.

FIG. 1 shows a device for carrying out the method, a block diagram; in fig. 2 - temporary characteristics of the bearing on the coast.

A device for implementing the proposed method consists of a series-connected rib sensor 1, amplifier 2, filter 3, detector k, first integrator 5, amplifier limiting 6, second integrator 7 of comparator 8. The second input of comparator 8 is connected to the output of reference source 9.

The method is carried out as follows.

When the bearing rotates, the signal from sensor 1 is amplified by amplifier 2 and passes through filter 3. From filter 3, the signal goes to a detector, where the envelope of this signal is highlighted. 10. This signal is fed to the first integrator 5. After the integration, it is fed to the limiting amplifier 6, the output of which receives a rectangular voltage pulse 11. Then this signal is fed to the input of the second integrator 7, the output of which forms a linearly increasing voltage 12 This voltage is applied to one of the inputs of the comparator 8, the second input of which receives the reference voltage 13 When the linear-rising voltage exceeds the reference voltage, the comparator generates an over-voltage signal ease of rotation of the bearing.

The application of the proposed method allows to increase the control productivity by 2 times. Simplicity

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This method makes it easy to automate the monitoring process.

Claims (1)

Invention Formula 5 A method of monitoring the condition of rolling bearings by running out time by bringing them into rotation and determining the parameter characterizing the constancy of the bearing on the coasting, characterized in that, in order to improve accuracy and productivity, as a parameter characterizing the state of the bearing 15, the bearing vibration signal is recorded, the signal is continuously measured, the received signal is converted into a rectangular impulse, integrated in time, and, comparing the result of the marking with a reference rectangular impulse, the condition of the bearing is determined. Sources of information taken into account in the examination JJ 1. USSR Author's Certificate No. Y5042, cl. Q01 M 13/04, 1963 (prototype). t / f. one / J / // I / 4 fPiJ.