| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an automatic work machine capable of realizing a shock-less function in manual operation by using a device for automatic operation. <P>SOLUTION: Manual pressure-reducing valves 23A, 23B and proportional pressure-reducing valves 24A, 24B are connected to a main switching valve 21 for a boom via shuttle valves 25A, 25B. Operation detectors 26A, 26B which detect control input are connected to the manual pressure-reducing valves 23A, 23B. The proportional pressure-reducing valves 24A, 24B output hydraulic pressure signals Pa1, Pa2 according to current command signals I1, I2 from an arithmetic control device 32. The arithmetic control device 32 outputs the current command signals I1, I2 for reducing shocks according to operation signals m1, m2 from the operation detectors 26A, 26B when a boom 11 is started and stopped with automatic operation stopped by a selection switch 35. <P>COPYRIGHT: (C)2012,JPO&INPIT |
