JPH0171205U - - Google Patents
Info
- Publication number
- JPH0171205U JPH0171205U JP1987166568U JP16656887U JPH0171205U JP H0171205 U JPH0171205 U JP H0171205U JP 1987166568 U JP1987166568 U JP 1987166568U JP 16656887 U JP16656887 U JP 16656887U JP H0171205 U JPH0171205 U JP H0171205U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- return
- flow path
- oil
- branch flow
- 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
- 239000010720 hydraulic oil Substances 0.000 claims 5
- 239000003921 oil Substances 0.000 claims 3
- 238000010586 diagram Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
- Fluid-Pressure Circuits (AREA)
Description
添付図面はこの考案の一実施例を示すブロツク
図である。
図中、１０は油圧サスペンシヨン（油圧アクチ
ユエータ）、１２は油圧供給装置、１４はタンク
、１６は油圧ポンプ、２２は３ポート切換弁、２
５Ａは油圧管路（第１の戻り分岐流路）、２５Ｂ
は油圧管路（第２の戻り分岐流路）、２６はオイ
ルクーラ、２８は絞り、３０はリリーフ弁、ａは
合流点である。
The accompanying drawing is a block diagram showing an embodiment of this invention. In the figure, 10 is a hydraulic suspension (hydraulic actuator), 12 is a hydraulic supply device, 14 is a tank, 16 is a hydraulic pump, 22 is a 3-port switching valve, 2
5A is a hydraulic pipe line (first return branch flow path), 25B
26 is an oil cooler, 28 is a throttle, 30 is a relief valve, and a is a confluence point.
Claims (1)
動油を加圧して油圧アクチユエータに供給する油
圧ポンプと、この油圧ポンプの吐出側と前記油圧
アクチユエータからの作動油戻り側との間に接続
されたリリーフ弁と、このリリーフ弁及び前記油
圧アクチユエータから戻る作動油の合流点の圧力
が所定の設定値以下か又は設定値以上かに対応し
て当該戻り作動油を前記タンクに連通した第１の
戻り分岐流路か又は第２の戻り分岐流路かに切換
接続する戻り流路切換制御手段と、前記第１の戻
り分岐流路に介挿されたオイルクーラと、前記第
２の戻り分岐流路に介挿され前記オイルクーラと
等価な流動抵抗値を有した流量制限手段とを備え
たことを特徴とする油圧アクチユエータの油圧供
給装置。 A tank for storing hydraulic oil, a hydraulic pump that pressurizes the hydraulic oil in the tank and supplies it to the hydraulic actuator, and a hydraulic pump connected between the discharge side of the hydraulic pump and the hydraulic oil return side from the hydraulic actuator. a relief valve, and a first return that communicates the return hydraulic oil to the tank depending on whether the pressure at the confluence of the hydraulic oil returning from the relief valve and the hydraulic actuator is below a predetermined set value or above a predetermined set value. a return flow path switching control means that is selectively connected to the branch flow path or the second return branch flow path; an oil cooler inserted in the first return branch flow path; and the second return flow branch flow path. A hydraulic pressure supply device for a hydraulic actuator, comprising: a flow rate limiting means inserted into the oil cooler and having a flow resistance value equivalent to that of the oil cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166568U JPH0171205U (en) | 1987-10-30 | 1987-10-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987166568U JPH0171205U (en) | 1987-10-30 | 1987-10-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0171205U true JPH0171205U (en) | 1989-05-12 |
Family
ID=31454066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987166568U Pending JPH0171205U (en) | 1987-10-30 | 1987-10-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0171205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012237341A (en) * | 2011-05-10 | 2012-12-06 | Daikin Industries Ltd | Oil cooler, oil cooling device, and machine tool |
-
1987
- 1987-10-30 JP JP1987166568U patent/JPH0171205U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012237341A (en) * | 2011-05-10 | 2012-12-06 | Daikin Industries Ltd | Oil cooler, oil cooling device, and machine tool |
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