FIELD: rail transport.
SUBSTANCE: invention can be used in control of machines and devices of rotary action, for example, axle boxes, electrical machines, pipelines for various purposes. Vibration sensor based on vibroacoustic piezoelectric transducer comprises hard-alloy needle with protector, damper and drive, for example, pneumatic, connected to last rod extension. Damper is equipped with three bushings fitted one on another: first connects tread with second and is made of plastic, for example polyamide, second metal and is connected to third, also made of plastic. Drive is equipped with pneumatic distributor connected to pneumatic system.
EFFECT: as a result, improved manufacturability in providing acoustic contact with object of control and increased level of vibration isolation of acoustic path of controlled waves of vibration passage from controlled object to vibration transducer.
1 cl, 1 dwg
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