JPS61193201U - - Google Patents
Info
- Publication number
- JPS61193201U JPS61193201U JP7766285U JP7766285U JPS61193201U JP S61193201 U JPS61193201 U JP S61193201U JP 7766285 U JP7766285 U JP 7766285U JP 7766285 U JP7766285 U JP 7766285U JP S61193201 U JPS61193201 U JP S61193201U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- valve
- servo
- switching valve
- servo system
- 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
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Servomotors (AREA)
Description
第１図は本考案の実施例を示す油圧回路図、第
２図は第１図の実施例の作動状態を示す指令信号
とシリンダ位置信号との時間経過を示すグラフ、
第３図は従来製品を示す油圧回路図、第４図は第
３図のものの第２図と同様な作動時間経過を示す
グラフである。
１……シリンダ（油圧アクチユエータ）、２…
…サーボ増幅器、３……サーボ弁、４……方向切
換弁、５……油圧源、６……絞り弁、１０……戻
り通路、１１……タンク、１２……往通路、１３
……バイパス路。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, and FIG. 2 is a graph showing the passage of time between a command signal and a cylinder position signal showing the operating state of the embodiment of FIG. 1.
FIG. 3 is a hydraulic circuit diagram showing a conventional product, and FIG. 4 is a graph showing the elapsed operating time of the product shown in FIG. 3, similar to FIG. 2. 1...Cylinder (hydraulic actuator), 2...
... Servo amplifier, 3 ... Servo valve, 4 ... Directional switching valve, 5 ... Hydraulic pressure source, 6 ... Throttle valve, 10 ... Return path, 11 ... Tank, 12 ... Outgoing path, 13
...Bypass road.
Claims (1)
ーボ増幅器２の駆動電流により制御駆動するサー
ボ弁３と、サーボ弁３への油圧源５からの圧油を
選択的に停止する切換弁４とを含む油圧サーボ系
において、前記切換弁４は戻り通路１０を常時タ
ンク１１と連通させ、かつ切換弁４にバイパスし
た絞り弁６を介して油圧源５と往通路１２との間
に配置したバイパス路１３を有することを特徴と
する油圧サーボ系における安全回路装置。 (2) 前記絞り弁６は油圧源５とサーボ弁３とが
往通路１２を介して連通された時に可変にできる
実用新案登録請求の範囲第１項に記載の油圧サー
ボ系における安全回路装置。[Claims for Utility Model Registration] (1) A servo valve 3 controlled and driven by a drive current of a servo amplifier 2 to operate a hydraulic actuator 1, and selectively stopping pressure oil from a hydraulic source 5 to the servo valve 3. In a hydraulic servo system including a switching valve 4, the switching valve 4 always communicates a return passage 10 with a tank 11, and connects a hydraulic source 5 and an outgoing passage 12 via a throttle valve 6 bypassed to the switching valve 4. A safety circuit device for a hydraulic servo system, characterized by having a bypass path 13 disposed in between. (2) The safety circuit device for a hydraulic servo system according to claim 1, wherein the throttle valve 6 can be made variable when the hydraulic power source 5 and the servo valve 3 are communicated through the outgoing path 12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7766285U JPS61193201U (en) | 1985-05-27 | 1985-05-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7766285U JPS61193201U (en) | 1985-05-27 | 1985-05-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61193201U true JPS61193201U (en) | 1986-12-01 |
Family
ID=30620930
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7766285U Pending JPS61193201U (en) | 1985-05-27 | 1985-05-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61193201U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6083505A (en) * | 1983-10-17 | 1985-05-11 | 三菱農機株式会社 | Lifting controller of working machine for tractor |
-
1985
- 1985-05-27 JP JP7766285U patent/JPS61193201U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6083505A (en) * | 1983-10-17 | 1985-05-11 | 三菱農機株式会社 | Lifting controller of working machine for tractor |
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