Quick idling control system for a hydraulic excavator

摘要

(57) [summary] [purpose] only to glance the switch, to provide a quick idling control system for a hydraulic excavator whether the open circuit state or a closed state can be easily determined. [Configuration] in operation electrical circuit 6 of the electromagnetic valve 4 I provide a seesaw type switch (foot switch) 11. Electromagnetic valve 4 is switched when you closed this seesaw type switch 11, is fed pressurized oil from the hydraulic pump 5 mini cylinder 2 is operated. In accordance with Allowed swinging member 3 and the fuel injection pump 1 of the lever 1a it is swung, idling control is performed.