Control device for contruction machine
First Claim
1. A control device for a construction machine comprising an engine as a power source adapted to be started/stopped based upon an operation applied to an engine switch, a hydraulic actuator for operating upon a hydraulic pump as a driving source, hydraulic lock control means for locking said hydraulic actuator in a hydraulic lock active condition where said hydraulic actuator is in an inactive state upon a predetermined hydraulic lock condition being met and unlocking said hydraulic actuator upon a predetermined hydraulic unlock condition being met, engine control means for carrying out an automatic stop control to automatically stop said engine upon a predetermined automatic stop condition being met, and restart instructing means for issuing a restart command to said engine control means via a route independently of that of the engine switch and independently of the hydraulic unlock condition, wherein said engine control means is configured to restart said engine based upon the restart command from said restart instructing means after an automatic stop of said engine by the automatic stop control.
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Accused Products
Abstract
A control device for a construction machine according to the present invention is configured so that in the construction machine provided with an automatic stop function which automatically stops an engine by an engine controller upon a predetermined automatic stop condition being met, and a hydraulic lock function which sets a hydraulic actuator locked in an inactive state by a hydraulic lock controller, there is provided a restart switch, where after an automatic stop of the engine, when the restart switch is operated, a restart command is transmitted to the engine controller via a route independently of that of an engine switch and independently of a hydraulic unlock condition, and the engine is restarted.
36 Citations
12 Claims
- 1. A control device for a construction machine comprising an engine as a power source adapted to be started/stopped based upon an operation applied to an engine switch, a hydraulic actuator for operating upon a hydraulic pump as a driving source, hydraulic lock control means for locking said hydraulic actuator in a hydraulic lock active condition where said hydraulic actuator is in an inactive state upon a predetermined hydraulic lock condition being met and unlocking said hydraulic actuator upon a predetermined hydraulic unlock condition being met, engine control means for carrying out an automatic stop control to automatically stop said engine upon a predetermined automatic stop condition being met, and restart instructing means for issuing a restart command to said engine control means via a route independently of that of the engine switch and independently of the hydraulic unlock condition, wherein said engine control means is configured to restart said engine based upon the restart command from said restart instructing means after an automatic stop of said engine by the automatic stop control.
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12. A control device for a construction machine comprising an engine as a power source adapted to be started and stopped based upon an operation applied to an engine switch, a hydraulic actuator adapted to be driven by pressure oil from a hydraulic pump, hydraulic lock control means for controlling said hydraulic actuator to be taken in either a locked state or an unlocked state based upon a predetermined lock condition, engine control means for carrying out an automatic stop control to automatically stop said engine upon a predetermined automatic stop condition being met, and restart instructing means for transmitting a restart command to said engine control means, the command instructing to restart said engine independently of the operation applied to the engine switch and a control by said hydraulic lock control means, wherein
said engine control means is configured to restart said engine based upon the restart command from said restart instructing means after an automatic stop of said engine by the automatic stop control.
Specification