| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of a construction machine capable of preventing theft at low cost while enhancing the operability of a password input or the like. <P>SOLUTION: In the control device of the construction machine comprising an engine 42, a hydraulic pump 43 to be driven by the engine 42, control valves 52, 53, 54 and 55 to control the flow of pressurized oil from the hydraulic pump 43 to hydraulic actuators 16, 21, 22 and 23, and an indicator 34 having a plurality of switches 47a, 47b, 47c, 47d, 48 and 50, the selection switches 47a, 47b, 47c, and 47d are also used for switches in which an operator can input a password according to the input order, a controller 41 determines whether or not the input password is matched with the stored password when a key switch 33 is operated to the ON position 33a and the stopped condition of the engine 42 is detected, and if it is determined that the input password is not matched with the stored password, the control signal is set in an OFF state, and a contact of a starting relay 58 is set to be in an open state. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
