JPS60151963U - Construction machinery hydraulic circuit - Google Patents
Construction machinery hydraulic circuitInfo
- Publication number
- JPS60151963U JPS60151963U JP3764384U JP3764384U JPS60151963U JP S60151963 U JPS60151963 U JP S60151963U JP 3764384 U JP3764384 U JP 3764384U JP 3764384 U JP3764384 U JP 3764384U JP S60151963 U JPS60151963 U JP S60151963U
- Authority
- JP
- Japan
- Prior art keywords
- motor pump
- variable motor
- hydraulic circuit
- pressure
- construction machinery
- 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
- Operation Control Of Excavators (AREA)
- 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図は従来の液圧回路を示す回路図、第２図はこの考
案の一実施例を示す回路図、第、３図は他の実施例を示
す回路図である。
３は可変モータポンプ、４はサーボシリンダ、２２．２
２’はパイロット切換え弁、２５は可変ポンプ、３０は
管路、３１はチェック弁、３２はアキュムレータ。FIG. 1 is a circuit diagram showing a conventional hydraulic circuit, FIG. 2 is a circuit diagram showing one embodiment of this invention, and FIGS. 3 and 3 are circuit diagrams showing other embodiments. 3 is a variable motor pump, 4 is a servo cylinder, 22.2
2' is a pilot switching valve, 25 is a variable pump, 30 is a pipeline, 31 is a check valve, and 32 is an accumulator.
Claims (1)
の間を接続する管路３０の途中に、チェック弁３１およ
び慣性体の慣性により逆駆動される上記可変モータポン
プ３から吐出される液圧を蓄圧するアキュムレータ３２
を設けたものにおいて、上記アキュムレータ３２内の圧
力が充填圧付近に達したとき切換えられるパイロット切
換え弁２２．２２’を設け、これらパイロット切換え弁
２２．２２’により可変モータポンプ３のサーボシリン
ダ４へ供給されている制御圧をドレンさせることにより
、可変モータポンプ３の斜板傾転角を中立に復帰させて
なる建設機械の液圧回路。Variable pump 25 and variable motor pump 3 that drives the inertial body
A check valve 31 and an accumulator 32 for accumulating the liquid pressure discharged from the variable motor pump 3 which is reversely driven by the inertia of the inertial body are located in the middle of the pipe line 30 connecting between the check valve 31 and the inertia body.
A pilot switching valve 22, 22' is provided which is switched when the pressure in the accumulator 32 reaches around the filling pressure, and these pilot switching valves 22, 22' are used to control the servo cylinder 4 of the variable motor pump 3. A hydraulic circuit for construction machinery that returns the swash plate tilt angle of the variable motor pump 3 to neutral by draining the supplied control pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3764384U JPS60151963U (en) | 1984-03-16 | 1984-03-16 | Construction machinery hydraulic circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3764384U JPS60151963U (en) | 1984-03-16 | 1984-03-16 | Construction machinery hydraulic circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60151963U true JPS60151963U (en) | 1985-10-09 |
Family
ID=30543914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3764384U Pending JPS60151963U (en) | 1984-03-16 | 1984-03-16 | Construction machinery hydraulic circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60151963U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009532598A (en) * | 2006-03-31 | 2009-09-10 | ハイブラ ドライヴ システムズ リミテッド ライアビリティ カンパニー | Hybrid earth mover |
-
1984
- 1984-03-16 JP JP3764384U patent/JPS60151963U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009532598A (en) * | 2006-03-31 | 2009-09-10 | ハイブラ ドライヴ システムズ リミテッド ライアビリティ カンパニー | Hybrid earth mover |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS60151963U (en) | Construction machinery hydraulic circuit | |
| JPH024059U (en) | ||
| JPS58137007U (en) | Mobile agricultural machinery hydraulic system | |
| JPS59181283U (en) | Power control device for three hydraulic pumps driven by a common prime mover | |
| JPS5967602U (en) | hydraulic circuit | |
| JPS608747U (en) | Pilot hydraulic circuit device for hydraulic construction machinery | |
| JPS58104405U (en) | Hydraulic motor drive circuit | |
| JPS595599U (en) | Control circuit for clamper for forklift truck | |
| JPS58116790U (en) | Total output control device for three hydraulic pumps | |
| JPS60175885U (en) | Horsepower control device for variable displacement pumps | |
| JPS5971937U (en) | Automatic engine control device for work vehicles | |
| JPS6034103U (en) | Pump flow control device | |
| JPS608748U (en) | Pilot hydraulic circuit device for hydraulic construction machinery | |
| JPS5844502U (en) | hydraulic system | |
| JPS6012703U (en) | Control circuit for hydraulic motor for travel | |
| JPS5888002U (en) | Hydraulic drive control device | |
| JPS59196324U (en) | Hydraulic drive traveling device | |
| JPS60151964U (en) | Construction machinery hydraulic circuit | |
| JPS6120902U (en) | Pump control circuit for cranes, etc. | |
| JPS5925701U (en) | Hydraulic pump discharge amount control circuit | |
| JPS5935118U (en) | Construction vehicle travel hydraulic circuit | |
| JPS60184454U (en) | Construction machinery clutch hydraulic circuit | |
| JPS58146103U (en) | hydraulic circuit | |
| JPS612560U (en) | Hydraulic excavator hydraulic circuit | |
| JPS5970902U (en) | hydraulic control circuit |