JPS6029902U - Hydraulic circuit of hydraulic equipment - Google Patents
Hydraulic circuit of hydraulic equipmentInfo
- Publication number
- JPS6029902U JPS6029902U JP12217883U JP12217883U JPS6029902U JP S6029902 U JPS6029902 U JP S6029902U JP 12217883 U JP12217883 U JP 12217883U JP 12217883 U JP12217883 U JP 12217883U JP S6029902 U JPS6029902 U JP S6029902U
- Authority
- JP
- Japan
- Prior art keywords
- meter
- valve
- hydraulic
- opening direction
- hydraulic equipment
- 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
- Multiple-Way Valves (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) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本案に係る油圧機器の油圧回路の一実施例を示
す油圧回路図、第２図は同油圧回路の油圧機器圧荷重作
動時の状態説明図、第３図は同油圧回路の油圧機器負荷
重作動時の状態説明図である。
１・・・・・・ポンプ、２・・・・・・油圧機器、３・
・・・・・油圧口Ｌ ７＊＊＊＊＊＊タンク、８ａ・・
・・・・第１のメータイン弁、８ｂ・・・・・・第２の
メータイン弁、２１ａ・・・・・・第１のメータアウト
弁、２１ｂ・・・・・・第２のメータアウト弁、４６・
・・・・・高背圧弁。Fig. 1 is a hydraulic circuit diagram showing an example of the hydraulic circuit of the hydraulic equipment according to the present invention, Fig. 2 is an explanatory diagram of the state of the hydraulic circuit when the hydraulic equipment pressure load is activated, and Fig. 3 is the hydraulic pressure of the hydraulic circuit. FIG. 4 is a state explanatory diagram when the equipment is operated under heavy load. 1...Pump, 2...Hydraulic equipment, 3.
...Hydraulic port L 7＊＊＊＊＊＊Tank, 8a...
...First meter-in valve, 8b...Second meter-in valve, 21a...First meter-out valve, 21b...Second meter-out valve , 46・
...High back pressure valve.
Claims (1)
油を油圧機器の一端側へ供給する第１のメータイン弁と
、パイロット圧により開方向に動かされて上記ポンプか
らの圧油を上記油圧機器の他端側へ供給する第２のメー
タイン弁と、上記第１のメータイン弁の開方向への作動
時に開方向へ動かされて上記油圧機器の他端側の油をタ
ンクへ排出する第２のメータアウト弁と、上記第２のメ
ータイン弁の開方向への作動時に開方向へ動かされて上
記油圧機器の一端側の油をタンクへ排出する第１のメー
タイン弁とを具え、負荷重作動時には閉位置に保持され
正荷重作動時には開かれる高背圧弁を前記タンクへの戻
り油路に設けたことを特徴とする油圧機器の油圧回路。A first meter-in valve that is moved in the opening direction by pilot pressure to supply pressure oil from the pump to one end of the hydraulic equipment; and a first meter-in valve that is moved in the opening direction by pilot pressure to supply pressure oil from the pump to one end of the hydraulic equipment. a second meter-in valve that supplies oil to the other end; and a second meter that is moved in the opening direction when the first meter-in valve is activated in the opening direction and discharges oil from the other end of the hydraulic equipment into the tank. a first meter-in valve that is moved in the opening direction when the second meter-in valve is operated in the opening direction and discharges oil from one end of the hydraulic equipment to the tank, and is closed when the load is heavy. 1. A hydraulic circuit for hydraulic equipment, characterized in that a high back pressure valve that is held in position and opened during positive load operation is provided in the return oil path to the tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12217883U JPS6029902U (en) | 1983-08-08 | 1983-08-08 | Hydraulic circuit of hydraulic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12217883U JPS6029902U (en) | 1983-08-08 | 1983-08-08 | Hydraulic circuit of hydraulic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6029902U true JPS6029902U (en) | 1985-02-28 |
Family
ID=30279365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12217883U Pending JPS6029902U (en) | 1983-08-08 | 1983-08-08 | Hydraulic circuit of hydraulic equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6029902U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997045659A1 (en) * | 1996-05-27 | 1997-12-04 | Komatsu Ltd. | Backpressure control circuit for hydraulic drive device |
-
1983
- 1983-08-08 JP JP12217883U patent/JPS6029902U/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997045659A1 (en) * | 1996-05-27 | 1997-12-04 | Komatsu Ltd. | Backpressure control circuit for hydraulic drive device |
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