DEVICE FOR CONVEYOR PROTECTION WHEN BELT BREAKS Russian patent published in 2013 - IPC B65G43/06 

FIELD: transport.

SUBSTANCE: device for conveyor protection when belt breaks contains switch-off unit (11) including position switch, intermediate relay, power contactor. Additionally, the device contains the first delay unit (1), the second delay unit (2), current sensor (3) made on the basis of measuring current transformers installed in engine stator feeding circuit (one in each phase), the first switch (4), value reading unit (5), the second comparator unit (6), memory unit (7), recording unit (8), setpoint adjustment unit (9), indicating unit (10), the second switch (12), the third switch (13), the third delay unit (14), the first comparator unit (1, 5), current step value adjustment unit (16).

EFFECT: higher operational speed of device.

1 tbl, 11 dwg