| 摘要 |
PROBLEM TO BE SOLVED: To provide a crusher in which muck is prevented from depositing on a mucking conveyor and a chute or clogging with muck is prevented when an abnormal situation such as the stop of the conveyor due to an error operation or an accident occurs. SOLUTION: The crusher has the function of receiving muck screened with a feeder 4 by the mucking conveyor 8 through the chute 7 and discharging the muck from the machine. The rotational speed of the conveyor 8 is detected, and the feeder 4 is not started or the operation of the feeder 4 is stopped when the operation state of the conveyor 8 is judged to be not normal. COPYRIGHT: (C)2004,JPO&NCIPI
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