JPS6221163U - - Google Patents
Info
- Publication number
- JPS6221163U JPS6221163U JP11184085U JP11184085U JPS6221163U JP S6221163 U JPS6221163 U JP S6221163U JP 11184085 U JP11184085 U JP 11184085U JP 11184085 U JP11184085 U JP 11184085U JP S6221163 U JPS6221163 U JP S6221163U
- Authority
- JP
- Japan
- Prior art keywords
- operated
- pressure
- relief valve
- valve
- drive
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 claims description 2
Landscapes
- Fluid-Pressure Circuits (AREA)
- Operation Control Of Excavators (AREA)
Description
第１図乃至第４図は本考案建設機械の油圧回路
の夫々異つた実施例を示す。
１，２……ポンプ、３〜９……操作弁、１０，
１１……走行モータ、１２〜１５……その他アク
チユエータ、１６〜１８，２７〜３０……パイロ
ツト部、１９，２０……チエツク弁、２１，２２
……絞り、２３，５０，５１，５３，６２，６５
……通路、２５……リリーフ弁、２５ａ……バネ
、２６……両ロツドシリンダ、２６ａ，２６ｂ…
…圧力室、２６ｃ……ロツド、６１……リリーフ
弁、７０……切換えバルブ、７１，７２……パイ
ロツトリリーフ弁、６０……ポンプ。
1 to 4 show different embodiments of the hydraulic circuit of the construction machine of the present invention. 1, 2...pump, 3-9...operation valve, 10,
11... Travel motor, 12-15... Other actuators, 16-18, 27-30... Pilot section, 19, 20... Check valve, 21, 22
...Aperture, 23, 50, 51, 53, 62, 65
... Passage, 25 ... Relief valve, 25a ... Spring, 26 ... Both rod cylinders, 26a, 26b ...
...Pressure chamber, 26c...Rod, 61...Relief valve, 70...Switching valve, 71, 72...Pilot relief valve, 60...Pump.
Claims (1)
記ポンプの吐出回路に個々に設置された走行モー
タと、その他のアクチユエータと、各々のアクチ
ユエータを駆動操作する操作弁とを有する油圧回
路に於て、各操作弁に操作弁本体と共に切換わる
パイロツト弁を設け、更に前記ポンプの吐出圧力
の上限値を決定する回路リリーフ弁の圧力設定値
を調整する装置を設け、前記走行モータの１個又
は２個を駆動操作した時に前記調整装置をリリー
フ弁の圧力が上昇する様に作動させ、前記走行モ
ータ又はその他アクチユエータの何れかを操作切
換えた時に、前記調整装置をリリーフ弁圧力の昇
圧が解除されるように作動させることを特徴とす
る建設機械の油圧回路。 In a hydraulic circuit having two pumps that drive traveling crawlers, traveling motors individually installed in the discharge circuits of the pumps, other actuators, and operation valves that drive and operate each actuator, Each operation valve is provided with a pilot valve that switches together with the operation valve body, and further provided with a device for adjusting the pressure setting value of a circuit relief valve that determines the upper limit of the discharge pressure of the pump, and one or two of the travel motors The adjusting device is operated so that the pressure of the relief valve increases when the drive motor is operated, and the adjusting device is operated so that the pressure increase of the relief valve is canceled when the drive motor or other actuator is operated. A hydraulic circuit for construction machinery, characterized in that it is operated by.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11184085U JPH0333802Y2 (en) | 1985-07-23 | 1985-07-23 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11184085U JPH0333802Y2 (en) | 1985-07-23 | 1985-07-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6221163U true JPS6221163U (en) | 1987-02-07 |
| JPH0333802Y2 JPH0333802Y2 (en) | 1991-07-17 |
Family
ID=30992140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11184085U Expired JPH0333802Y2 (en) | 1985-07-23 | 1985-07-23 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333802Y2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006292104A (en) * | 2005-04-12 | 2006-10-26 | Kubota Corp | Hydraulic system of working machine |
| JP2008014405A (en) * | 2006-07-06 | 2008-01-24 | Nabtesco Corp | Pressure rise circuit for construction machine and its supply part body |
| JP2008120480A (en) * | 2006-11-09 | 2008-05-29 | Furukawa Unic Corp | Stack-type control valve for vehicle mounted crane |
| JP2014190410A (en) * | 2013-03-27 | 2014-10-06 | Kayaba Ind Co Ltd | Hydraulic control device |
| EP3134583A1 (en) * | 2014-04-23 | 2017-03-01 | Putzmeister Engineering GmbH | Control system for a hydraulic work machine |
| WO2021228437A1 (en) * | 2020-05-15 | 2021-11-18 | Eaton Intelligent Power Limited | Hydraulic system valve control |
-
1985
- 1985-07-23 JP JP11184085U patent/JPH0333802Y2/ja not_active Expired
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006292104A (en) * | 2005-04-12 | 2006-10-26 | Kubota Corp | Hydraulic system of working machine |
| JP4503482B2 (en) * | 2005-04-12 | 2010-07-14 | 株式会社クボタ | Working machine hydraulic system |
| JP2008014405A (en) * | 2006-07-06 | 2008-01-24 | Nabtesco Corp | Pressure rise circuit for construction machine and its supply part body |
| JP2008120480A (en) * | 2006-11-09 | 2008-05-29 | Furukawa Unic Corp | Stack-type control valve for vehicle mounted crane |
| JP2014190410A (en) * | 2013-03-27 | 2014-10-06 | Kayaba Ind Co Ltd | Hydraulic control device |
| EP3134583A1 (en) * | 2014-04-23 | 2017-03-01 | Putzmeister Engineering GmbH | Control system for a hydraulic work machine |
| JP2017514079A (en) * | 2014-04-23 | 2017-06-01 | プッツマイスター エンジニアリング ゲーエムベーハー | Control system for hydraulic work machines |
| WO2021228437A1 (en) * | 2020-05-15 | 2021-11-18 | Eaton Intelligent Power Limited | Hydraulic system valve control |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0333802Y2 (en) | 1991-07-17 |