JPS622801U - - Google Patents
Info
- Publication number
- JPS622801U JPS622801U JP9404185U JP9404185U JPS622801U JP S622801 U JPS622801 U JP S622801U JP 9404185 U JP9404185 U JP 9404185U JP 9404185 U JP9404185 U JP 9404185U JP S622801 U JPS622801 U JP S622801U
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- switching valve
- electromagnetic switching
- hydraulic
- blocks
- 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
Landscapes
- Fluid-Pressure Circuits (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
Description
第１図は本考案の実施例を示す油圧回路図、第
２図は電磁切替弁を切替えるための電気回路図、
第３図は従来例を示す油圧回路図である。
１……エンジン、２……油圧ポンプ、３……タ
ンク、４……サクシヨンフイルタ、５，６，１０
……管路、７……インラインフイルタ、８……ア
ンロード弁、９……アキユムレータ、１１……操
作用減圧弁、１２……操作レバー、１３……バイ
パス管路、１４……電磁切替弁、１５……タイマ
スイツチ。
Fig. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, Fig. 2 is an electric circuit diagram for switching an electromagnetic switching valve,
FIG. 3 is a hydraulic circuit diagram showing a conventional example. 1... Engine, 2... Hydraulic pump, 3... Tank, 4... Suction filter, 5, 6, 10
... Pipe line, 7 ... In-line filter, 8 ... Unload valve, 9 ... Accumulator, 11 ... Operation pressure reducing valve, 12 ... Operation lever, 13 ... Bypass pipe line, 14 ... Solenoid switching valve , 15...Timer switch.
Claims (1)
に圧力保持手段を介して油圧機器を接続してなる
油圧源回路において、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
バイパス管路に同管路をタンクに連通させる第１
位置と同管路をブロツクする第２位置とに切替自
在の電磁切替弁を詳設け、この電磁切替弁を第１
位置に付勢するとともに、エンジンの起動後所定
時間経過後に電磁切替弁を第２位置に切替えるタ
イマスイツチを設けてなる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 driven by an engine via a pressure holding means, a bypass pipe is branched from the pipe between the hydraulic pump and the pressure holding means. , a first pipe that connects the bypass pipe to the tank.
An electromagnetic switching valve that can be freely switched between a first position and a second position that blocks the same pipe is provided, and this electromagnetic switching valve is switched between a first position and a second position that blocks the pipe.
1. A hydraulic power source circuit comprising a timer switch that biases the electromagnetic switching valve to the second position and switches the electromagnetic switching valve to the second position after a predetermined period of time has elapsed after starting the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9404185U JPS622801U (en) | 1985-06-20 | 1985-06-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9404185U JPS622801U (en) | 1985-06-20 | 1985-06-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS622801U true JPS622801U (en) | 1987-01-09 |
Family
ID=30652246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9404185U Pending JPS622801U (en) | 1985-06-20 | 1985-06-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS622801U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006085532A1 (en) * | 2005-02-08 | 2006-08-17 | Komatsu Ltd. | Hydraulic shovel |
| JP2009526184A (en) * | 2006-02-08 | 2009-07-16 | エアバス フランス | Purge device and hydraulic system provided with the purge device |
| JP2020159465A (en) * | 2019-03-26 | 2020-10-01 | 日立建機株式会社 | Hydraulic circuit of construction machine |
-
1985
- 1985-06-20 JP JP9404185U patent/JPS622801U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006085532A1 (en) * | 2005-02-08 | 2006-08-17 | Komatsu Ltd. | Hydraulic shovel |
| US7726050B2 (en) | 2005-02-08 | 2010-06-01 | Komatsu Ltd. | Hydraulic shovel |
| JP2009526184A (en) * | 2006-02-08 | 2009-07-16 | エアバス フランス | Purge device and hydraulic system provided with the purge device |
| JP2020159465A (en) * | 2019-03-26 | 2020-10-01 | 日立建機株式会社 | Hydraulic circuit of construction machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS622801U (en) | ||
| JPS6298783U (en) | ||
| JPH0471829U (en) | ||
| JPH0313597Y2 (en) | ||
| JPS622802U (en) | ||
| JPS61197268U (en) | ||
| JP2594440Y2 (en) | Power supply for air plasma cutting | |
| JPS6246579U (en) | ||
| JPS644972U (en) | ||
| JPS62102860U (en) | ||
| JPS60170091U (en) | Pump antifreeze device | |
| JPS6220710Y2 (en) | ||
| JPS6448401U (en) | ||
| JPS593272U (en) | Compressor startup control device | |
| JPH0475202U (en) | ||
| JPS61157701U (en) | ||
| JPS5914939U (en) | Automatic engine stop device for aerial work vehicles | |
| JPH0263083U (en) | ||
| JPS62101258U (en) | ||
| JPS60102502U (en) | hydraulic power unit | |
| JPS5824462U (en) | Electronically controlled fuel injection engine restart device | |
| JPS6376290U (en) | ||
| JPS59109044U (en) | Hydraulic pressure operating device for breaker | |
| JPH0290307U (en) | ||
| JPS59140966U (en) | hydraulic pump drive system |