| 摘要 |
PROBLEM TO BE SOLVED: To safely move a cab by a cab movement device with a body side gate and a cab side gate surely closed. SOLUTION: Operation of the cab movement device 18 is allowed by a cab movement control circuit when it is detected that the movable gate 23C on the body side gate 23 is in the closed position by a body side gate detection switch 25 and it is detected that the movable gate 27C on the cab side gate 27 is in the closed position by a cab side gate detection switch 29. Operation of the cab movement device 18 can be forbidden when at least one of the movable gate 23C of the body side gate 23 and the movable gate 27C of the cab side gate 27 is opened, and erroneous movement of the cab 21 by an operator can be prevented when a worker other than the operator moves between a body side step 19 and a cab side step 22. COPYRIGHT: (C)2010,JPO&INPIT |
