Bearing vibration checking instrument

Abstract

The invention relates to a bearing vibration checking instrument, and belongs to the field of measurement. The instrument comprises a contact type absolute vibration checking unit and a central control unit, wherein the central control unit is provided with a Windows CE operation platform; measuring software is arranged in the Windows CE operation platform; the measuring software and the contact type absolute vibration checking unit are integrated; and the measuring software controls the operation or the sequence of measuring actions of the absolute vibration checking unit, reads a measured result, performs calculation, display and storage on measurement parameters, and automatically draws a real-time waveform, a linearity curve, a frequency spectrum curve, and a sensitivity error curve of a measured sensor. The bearing vibration checking instrument can be widely used in the field of checking of all kinds of vibration systems of bearing vibration (speed / intensity).

Description

technical field [0001] The invention belongs to the field of measurement, and in particular relates to a verification device for parameters of a vibration velocity sensor and an acceleration vibration sensor. Background technique [0002] Vibration velocity sensor for absolute vibration measurement of bearing housings, housings or structures relative to free space. Its output voltage is proportional to the vibration speed, so it is also called speed vibration sensor. Its output can be the size of the speed value, or it can be the output of the displacement signal converted by integrating the speed value. This measurement can evaluate the comprehensive working conditions of the rotating or reciprocating mechanism. [0003] The most common vibration problems in machinery, most of them originate in the rotor. Such as imbalance, misalignment, friction, etc. However, for some machines, the vibration of the shaft is almost completely transmitted to the bearing shell. In this ca...

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a tile vibration calibrator, which can realize automatic calibration of speed, amplitude-frequency characteristics, linear characteristics of acceleration sensors, and linear system errors of vibration systems (sensors + vibration monitoring instruments, etc.) And the calibration of parameters such as average sensitivity error, and can solve the problem of poor standardization of existing similar equipment, small thrust, small vibration frequency adjustment range, lack of intelligent data analysis / processing, communication functions, cumbersome calibration steps, and artificial error factors in calibration data It can automatically check the velocity / acceleration vibration system, and check the linearity and amplitude-frequency characteristics of the absolute vibration sensor

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