JPS5872506U - Hydraulic closed circuit device - Google Patents
Hydraulic closed circuit deviceInfo
- Publication number
- JPS5872506U JPS5872506U JP16651781U JP16651781U JPS5872506U JP S5872506 U JPS5872506 U JP S5872506U JP 16651781 U JP16651781 U JP 16651781U JP 16651781 U JP16651781 U JP 16651781U JP S5872506 U JPS5872506 U JP S5872506U
- Authority
- JP
- Japan
- Prior art keywords
- closed circuit
- charge
- circuit
- circuit device
- support pump
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は従来の閉回路装置の構成説明図、第２図は本考
案−実施例の構成説明図、第３図、第４図は本考案の他
の実施例の構成説明図である。
１１はチャージポンプ、１２はチャージ応援用ポンプ、
Ｃは制御機構、Ｄは切換弁。。FIG. 1 is an explanatory diagram of the configuration of a conventional closed circuit device, FIG. 2 is an explanatory diagram of the configuration of an embodiment of the present invention, and FIGS. 3 and 4 are explanatory diagrams of the configuration of other embodiments of the present invention. 11 is a charge pump, 12 is a charge support pump,
C is a control mechanism and D is a switching valve. .
Claims (1)
された固定容量形の小容量のチャージ用バンプ１１と、
閉回路４０．４０’のチャージ回路４．１に吐出側が接
続された固定容量形のチャージ応援用ポンプ１２と、チ
ャージ回路４１に設けられてチャージ応援用ポンプ１２
の吐出圧をタンク側に流すポジションＡとチャージ応援
用ポンプ１２の吐出圧をチャージ回路４１に流すポジシ
ョンＢとを有する切換弁りと、操作レバーの操作により
閉回路４０．４０’の可変容量ポンプ２，２′の吐出量
を制御すると共に閉回路４θ、４０′の油圧シリンダ３
，３′の伸長作動時切換弁りのポート側にポジションＢ
を位置させる制御機構Ｃとを備えたことを特徴とする油
圧閉回路装置。a fixed capacity type small capacity charging bump 11 whose discharge side is connected to a charging circuit 41 of a closed circuit 40, 40';
A fixed capacity charge support pump 12 whose discharge side is connected to the charge circuit 4.1 of the closed circuit 40.40', and a charge support pump 12 provided in the charge circuit 41.
A switching valve having a position A that allows the discharge pressure of the charge support pump 12 to flow to the tank side and a position B that allows the discharge pressure of the charge support pump 12 to flow to the charge circuit 41, and a variable displacement pump with a closed circuit 40 or 40' by operating the operation lever. 2, 2', and a closed circuit 4θ, 40' hydraulic cylinder 3.
, 3' is in position B on the port side of the switching valve when it is extended.
A hydraulic closed circuit device comprising: a control mechanism C for positioning a hydraulic closed circuit device;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16651781U JPS5872506U (en) | 1981-11-10 | 1981-11-10 | Hydraulic closed circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16651781U JPS5872506U (en) | 1981-11-10 | 1981-11-10 | Hydraulic closed circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5872506U true JPS5872506U (en) | 1983-05-17 |
Family
ID=29958671
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16651781U Pending JPS5872506U (en) | 1981-11-10 | 1981-11-10 | Hydraulic closed circuit device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5872506U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011241952A (en) * | 2010-05-20 | 2011-12-01 | Komatsu Ltd | Control device for electric actuator |
| WO2015030234A1 (en) * | 2013-09-02 | 2015-03-05 | 日立建機株式会社 | Drive device for work machine |
| CN105715594A (en) * | 2014-12-23 | 2016-06-29 | 日立建机株式会社 | Working Machine |
-
1981
- 1981-11-10 JP JP16651781U patent/JPS5872506U/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011241952A (en) * | 2010-05-20 | 2011-12-01 | Komatsu Ltd | Control device for electric actuator |
| US9617713B2 (en) | 2010-05-20 | 2017-04-11 | Komatsu Ltd. | Control device for an electric actuator |
| WO2015030234A1 (en) * | 2013-09-02 | 2015-03-05 | 日立建機株式会社 | Drive device for work machine |
| JP2015048899A (en) * | 2013-09-02 | 2015-03-16 | 日立建機株式会社 | Apparatus for driving working machine |
| CN105074230A (en) * | 2013-09-02 | 2015-11-18 | 日立建机株式会社 | Drive device for work machine |
| US9783960B2 (en) | 2013-09-02 | 2017-10-10 | Hitachi Construction Machinery Co., Ltd. | Driving device for work machine |
| CN105715594A (en) * | 2014-12-23 | 2016-06-29 | 日立建机株式会社 | Working Machine |
| US10184225B2 (en) | 2014-12-23 | 2019-01-22 | Hitachi Construction Machinery Co., Ltd. | Working machine |
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