| 摘要 |
PROBLEM TO BE SOLVED: To provide a crusher which can turn the crushing tool surely inoperative when a safety cover is open.SOLUTION: A crusher 1 has a crushing tool disposed in a casing 2, a safety cover 24 that opens and closes an opening 22, and power feeder lines 42, 43 that feed dynamo-electric motors 11, 15 for crusher drive with power. A power feeding circuit breaker mechanism S1 with the power feeder line 42 interposed has a dynamo-electric motor side in-casing conductor 45, a power supply side in-casing conductor 46, a dynamo-electric motor side in-cover conductor 47, and a power supply side in-cover conductor 48. When the safety cover 24 is mounted, the dynamo-electric motor side in-casing conductor 45 comes in contact with the dynamo-electric motor side in-cover conductor 47, and the power supply side in-casing conductor 46 comes in contact with the power supply side in-cover conductor 48, thereby feeding the dynamo-electric motors 11, 15 with power. When the safety cover 24 is removed, the power feeding circuit is physically cut off to make power feeding impossible.SELECTED DRAWING: Figure 6 |
