| 摘要 |
PROBLEM TO BE SOLVED: To further improve snow removing workability and the durability of an electromagnetic clutch. SOLUTION: In this snowplow, a working part such as a snow removing auger is driven by a belt type power transmission mechanism for transmitting the rotation of a driving pulley to a rotating shaft through a driven pulley by hanging a belt on the driving pulley and the driven pulley, and the belt type power transmission mechanism is provided with an overload preventing device. The overload preventing device is provided with an electromagnetic clutch built in the driving pulley and connected/disconnected by the operation of a clutch operating switch; a detecting part for detecting the excessive state of torque due to the tension change of the belt; and a control part for putting the electromagnetic clutch in the disconnected state in ST08 when satisfying two conditions which are a condition that a fixed time has elapsed after the electromagnetic clutch connecting operation performed by the clutch operating switch in ST05, and a condition that an OFF signal is obtained from a detecting switch of the detecting part in ST06. COPYRIGHT: (C)2003,JPO
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