| 摘要 |
The invention provides a mine conveyor, for use in hazardous atmospheres, comprising an endless conveying belt; an electric motor; and a torque transmission arrangement located between the electric motor and the endless conveying belt, the torque transmission arrangement incorporating a modulated wet clutch and a torque converter, with a drive drivable by transmission gearing and adapted to make driving relationship with the endless conveying belt; and a control system for controlling the torque transmission arrangement, the system comprising an electro-hydraulic control circuit incorporaitng an intrinsically safe (as herein defined) unit to monitor and control the conveyor, at least one microprocessor incorporated in the intrinsically safe unit, the microprocessor incorporating a memory whereby a ramp starting mode, a running mode, and a stop mode required for the conveyor are preprogrammable into the microprocessor, and at least one transducer included in the electro-hydraulic control circuit to monitor at least one condition of the conveyor, the transducer(s) being electrically connected to the intrinsically safe unit to relay to the unit electrical signals in accordance with the condition monitored.
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