| 摘要 |
FIELD: railway transport; slip and skid detection devices. SUBSTANCE: device reveals vibrations in mechanical portion of wheelset drive and is capable of reacting to double-frequency vibrations appearing in mechanical system at slipping and skidding. Device has slipping and skidding detection channels 1 and 2, wheelset drive mechanical portion vibration detector 3, for instance, strain-gauge transducer. Channel 1 has series-connected first band-pass filter 4, first rectifier 5, first ripple filter 6 and first threshold element 7. Channel 2 has series-connected second band-pass filter 8, second rectifier 9, second ripple filter 10 and second threshold element 11. Output of transducer 3 is coupled with inputs of first and second band pass filters 4 and 8. Outputs of first and second threshold elements 7 and 11 connected, accordingly, to first and second inputs of OR gate 12. EFFECT: enhanced reliability of slip and skid detection. 2 cl, 1 dwg |
