| 摘要 |
PROBLEM TO BE SOLVED: To suppress penetration of an inverter control board with powder dust from a crusher. SOLUTION: An inverter control board 26 is installed at a position opposite to a crusher 19 while sandwiching a power unit 16 and above a discharge conveyer 20. Consequently, the crusher 19 which generates powder dust in crushing work is parted from the inverter control board 26 and penetration of the inverter control board 26 with the powder dust can be suppressed. Further, crushed debris dropped off the discharge conveyer 20 is prevented from hitting against the inverter control board 26 and the inverter control board 26 is protected. As a result, the reliability of the inverter control board 26 can be heightened and an electrically-operated motor 17, which is a power source, is always properly controlled by an inverter control board 26 to carry out a crushing work smoothly for a long time. COPYRIGHT: (C)2010,JPO&INPIT
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