JPS622802U - - Google Patents
Info
- Publication number
- JPS622802U JPS622802U JP9404285U JP9404285U JPS622802U JP S622802 U JPS622802 U JP S622802U JP 9404285 U JP9404285 U JP 9404285U JP 9404285 U JP9404285 U JP 9404285U JP S622802 U JPS622802 U JP S622802U
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- hydraulic
- bypass
- power source
- predetermined value
- 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 3
Description
第１図は本考案の実施例を示す油圧回路図、第
２図は別の実施例を示す油圧回路図、第３図は従
来例を示す油圧回路図である。
１……油圧ポンプ、２……タンク、３……サク
シヨンフイルタ、４……吸込管路、５……吐出管
路、６……インラインフイルタ、７……アンロー
ド弁、８……チエツク弁、９……アキユムレータ
、１０……一次側管路、１２……操作弁、１４…
…バイパス管路、１５……切替弁、１８……絞り
弁、１９……背圧用チエツク弁、２１……シヤト
ル弁。
FIG. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, FIG. 2 is a hydraulic circuit diagram showing another embodiment, and FIG. 3 is a hydraulic circuit diagram showing a conventional example. 1... Hydraulic pump, 2... Tank, 3... Suction filter, 4... Suction pipe, 5... Discharge pipe, 6... In-line filter, 7... Unload valve, 8... Check valve , 9...Accumulator, 10...Primary side pipe line, 12...Operation valve, 14...
... Bypass pipe line, 15 ... Switching valve, 18 ... Throttle valve, 19 ... Back pressure check valve, 21 ... Shuttle valve.
Claims (1)
油圧機器を接続してなる油圧源回路において、上
記油圧ポンプと圧力保持手段との間の管路からバ
イパス管路を分岐させ、このバイパス管路に、ポ
ンプの吐出圧力が所定値未満の時にバイパス管路
をタンクに連通させ、所定値以上の時にバイパス
管路をブロツクする切替弁を設けたことを特徴と
する油圧源回路。 In a hydraulic power source circuit in which a hydraulic device is connected to a discharge pipe of a hydraulic pump via a pressure holding means, a bypass pipe is branched from the pipe between the hydraulic pump and the pressure holding means, and the bypass pipe is A hydraulic power source circuit characterized in that a switching valve is provided that connects the bypass line to the tank when the discharge pressure of the pump is less than a predetermined value, and blocks the bypass line when the discharge pressure is equal to or higher than the predetermined value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9404285U JPS622802U (en) | 1985-06-20 | 1985-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9404285U JPS622802U (en) | 1985-06-20 | 1985-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS622802U true JPS622802U (en) | 1987-01-09 |
Family
ID=30652248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9404285U Pending JPS622802U (en) | 1985-06-20 | 1985-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS622802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006085532A1 (en) * | 2005-02-08 | 2006-08-17 | Komatsu Ltd. | Hydraulic shovel |
-
1985
- 1985-06-20 JP JP9404285U patent/JPS622802U/ja active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006085532A1 (en) * | 2005-02-08 | 2006-08-17 | Komatsu Ltd. | Hydraulic shovel |
| JP2006220177A (en) * | 2005-02-08 | 2006-08-24 | Komatsu Ltd | Hydraulic shovel |
| US7726050B2 (en) | 2005-02-08 | 2010-06-01 | Komatsu Ltd. | Hydraulic shovel |
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