JPH0410102U

JPH0410102U -

Info

Publication number: JPH0410102U
Application number: JP5136290U
Authority: JP
Priority date: 1990-05-17
Filing date: 1990-05-17
Publication date: 1992-01-28

Description

[Brief explanation of drawings]

第１図は、本考案に係る油圧供給システムの構
成を示した油圧・電気回路図、第２図は、上記油
圧供給システムを備えた高所作業車の斜視図であ
る。２０……ウインチ、１１５……バツテリ、１０
１……ハイブリツド油圧パワーユニツト、１１２
……エンジン駆動ポンプ、１１４……モータ駆動
ポンプ、１０２……油圧供給制御バルブ、１０３
……油圧供給検出スイツチ、１０４……モータ始
動スイツチ、１０５……モータ制御部、１５５…
…タイマスイツチ。 FIG. 1 is a hydraulic/electrical circuit diagram showing the configuration of a hydraulic pressure supply system according to the present invention, and FIG. 2 is a perspective view of an aerial work vehicle equipped with the above-mentioned hydraulic pressure supply system. 20...Winch, 115...Battery, 10
1...Hybrid hydraulic power unit, 112
...Engine driven pump, 114...Motor driven pump, 102...Hydraulic supply control valve, 103
...Hydraulic pressure supply detection switch, 104...Motor start switch, 105...Motor control section, 155...
...Timer switch.

Claims

[Claims for Utility Model Registration] A hybrid hydraulic power unit comprising an engine-driven pump driven by an engine and capable of discharging hydraulic fluid, and a motor-driven pump driven by an electric motor and capable of discharging hydraulic fluid; a hydraulic pressure supply control valve that controls supply/cutoff of hydraulic fluid discharged from the pump and the motor-driven pump to the hydraulic operating means; and a hydraulic pressure supply that detects that the hydraulic fluid supply control valve has been switched to the hydraulic fluid supply side. a detecting means; a motor starting means for starting the electric motor; and a motor starting means for starting the electric motor when the hydraulic pressure supply detecting means detects that the hydraulic pressure supply control valve has been switched to the hydraulic oil supply side. A hydraulic supply system using a hybrid hydraulic power unit, comprising a motor control means that operates for a predetermined period of time after starting by the motor starting means.