GEAR WHEELS TECHNICAL CONDITION CONTACT-FREE DETERMINATION METHOD AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G01M13/02 

FIELD: defectoscopy.

SUBSTANCE: reduction systems operating condition contact-free control method during their operation consists in that receiving information about the gear wheel rotation period, on the gearbox body installing the fixed non-contact sensor in the form of a circular waveguide, using the SHF electromagnetic oscillations generator, exciting the microwave electric oscillations and by the a waveguide sensor sending the radiation perpendicular to the gear wheel axis, receiving the reflected radiation, selecting the information signal with the amplitude detector, at the beginning of operation measuring the pulses duration, pulses front and rear edges durations, the pulses front and rear edges steepness and the pulses amplitude, and remembering them as reference values individually for each gear tooth, during operation measuring the pulses durations, the pulses front and rear edges durations, pulses front and rear edges steepness and the pulses amplitude, for each tooth calculating the found current relationships difference and the reference values, and from the found differences judging on the gear wheel wear degree. Method implementation device includes a contactless sensor, rectangular pulse generators, a rotary sensor, a circular waveguide, a SHF band generator, circulator, amplitude detector, microcontroller, clock generator, ADC, pulses width counter, front edge duration counter, rear edge duration counter, period duration counter, a personal computer (PC), on which screen, in accordance with the installed processing program, information on the gear wheel wear degree is displayed.

EFFECT: present invention is intended for the gears technical condition monitoring and can be used for the reduction systems operating condition diagnostics during their operation.

2 cl, 2 dwg