| 摘要 |
PROBLEM TO BE SOLVED: To immediately make an operator aware of a lock-off state and prevent the operator from carelessly and continuously moving the actuation section when an operation lever is in a lock-off condition, although a problem that when the operator touches the operation lever by mistake for inputting from an input device in the case of the lock-off condition, the actuation section moves in itself, if the operator is aware of the movement of the actuation section, he immediately operates a hydraulic lock lever and makes the operation lever into a lock condition and he can stop the succeeding malfunction, but he notices at many times the neighborhood of the input device when operating the input device, and hence he is not aware of the lock-off condition, thereafter, he touches the operation lever also, hence, the maloperation condition continues, exists. SOLUTION: An indication device 1 is arranged in the cab of a construction machine. In the indication device 1, a lighting control is put into practice when an input signal has been output from an input means 4 of a control appliance system, in the case that the operation lever 2 is in the lock-off condition. COPYRIGHT: (C)2004,JPO
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