JPH0399205U - - Google Patents
Info
- Publication number
- JPH0399205U JPH0399205U JP796790U JP796790U JPH0399205U JP H0399205 U JPH0399205 U JP H0399205U JP 796790 U JP796790 U JP 796790U JP 796790 U JP796790 U JP 796790U JP H0399205 U JPH0399205 U JP H0399205U
- Authority
- JP
- Japan
- Prior art keywords
- pump
- switch
- actuator
- oil
- supply device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000012530 fluid Substances 0.000 claims 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Description
第１図は、本考案に係る油圧供給装置を示す油
圧回路図、第２図は、上記油圧供給装置を搭載し
た高所作業車の斜視図である。
３……旋回モータ、５……起伏シリンダ、６…
…伸縮シリンダ、１１……第１ポンプ、１２……
第２ポンプ、１３……アクセルスイツチ、１４…
…油路開閉バルブ、Ｅ……エンジン。
FIG. 1 is a hydraulic circuit diagram showing a hydraulic pressure supply device according to the present invention, and FIG. 2 is a perspective view of an aerial work vehicle equipped with the hydraulic pressure supply device. 3... Swivel motor, 5... Lifting cylinder, 6...
...Telescopic cylinder, 11...First pump, 12...
Second pump, 13... Accelerator switch, 14...
...Oil passage opening/closing valve, E...Engine.
Claims (1)
供給装置において、 並列に配設され、前記アクチユエータに供給さ
れる作動油を吐出する第１ポンプおよび第２ポン
プと、 前記第１ポンプ、前記第２ポンプの双方を連結
して駆動するエンジンと、 前記エンジンの作動を高回転作動または低回転
作動に切換えるためのアクセスイツチと、 前記第２ポンプから吐出された作動油を前記ア
クチユエータに供給させるロード側またはオイル
タンクにドレンさせるアンロード側に切換可能な
油路切換手段とからなり、 前記油路切換手段は、前記アクセルスイツチが
前記高回転作動側に切換えられたときは前記ロー
ド側に切換わり、前記アクセルスイツチが前記低
回転作動側に切換えられたときは前記アンロード
側に切換わるよう構成されたことを特徴とする油
圧供給装置。[Claims for Utility Model Registration] A hydraulic supply device for supplying hydraulic fluid to an actuator, comprising: a first pump and a second pump disposed in parallel and discharging hydraulic fluid to be supplied to the actuator; an engine that connects and drives both the first pump and the second pump; an access switch that switches the operation of the engine to high-speed operation or low-speed operation; an oil passage switching means that can be switched to a load side for supplying oil to the actuator or an unloading side for draining oil to an oil tank; A hydraulic pressure supply device characterized in that it is configured to switch to a load side and to switch to an unload side when the accelerator switch is switched to the low rotation operating side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP796790U JPH0399205U (en) | 1990-01-30 | 1990-01-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP796790U JPH0399205U (en) | 1990-01-30 | 1990-01-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0399205U true JPH0399205U (en) | 1991-10-16 |
Family
ID=31511619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP796790U Pending JPH0399205U (en) | 1990-01-30 | 1990-01-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0399205U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58597A (en) * | 1981-06-26 | 1983-01-05 | 株式会社小松製作所 | Hydraulic circuit for driving cutter head of tunnel excavator |
| JPS61126388A (en) * | 1984-11-21 | 1986-06-13 | Yunitsuku:Kk | Control of engine pump for hydraulic type crane |
-
1990
- 1990-01-30 JP JP796790U patent/JPH0399205U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58597A (en) * | 1981-06-26 | 1983-01-05 | 株式会社小松製作所 | Hydraulic circuit for driving cutter head of tunnel excavator |
| JPS61126388A (en) * | 1984-11-21 | 1986-06-13 | Yunitsuku:Kk | Control of engine pump for hydraulic type crane |
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