JPH01139101U - - Google Patents
Info
- Publication number
- JPH01139101U JPH01139101U JP3363488U JP3363488U JPH01139101U JP H01139101 U JPH01139101 U JP H01139101U JP 3363488 U JP3363488 U JP 3363488U JP 3363488 U JP3363488 U JP 3363488U JP H01139101 U JPH01139101 U JP H01139101U
- Authority
- JP
- Japan
- Prior art keywords
- valve
- boom cylinder
- outputs
- pump
- flow rate
- 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
- 238000006073 displacement reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988033634U JPH074322Y2 (ja) | 1988-03-16 | 1988-03-16 | ブームシリンダ操作装置 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1988033634U JPH074322Y2 (ja) | 1988-03-16 | 1988-03-16 | ブームシリンダ操作装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH01139101U true JPH01139101U (zh) | 1989-09-22 |
JPH074322Y2 JPH074322Y2 (ja) | 1995-02-01 |
Family
ID=31260325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1988033634U Expired - Lifetime JPH074322Y2 (ja) | 1988-03-16 | 1988-03-16 | ブームシリンダ操作装置 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH074322Y2 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009144505A (ja) * | 2007-12-17 | 2009-07-02 | Volvo Construction Equipment Ab | 小旋回式掘削機のブーム衝撃緩和装置及びその制御方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5336861A (en) * | 1976-09-16 | 1978-04-05 | Hitachi Ltd | Hydraulic elevator |
JPS58121301A (ja) * | 1982-01-11 | 1983-07-19 | Hitachi Constr Mach Co Ltd | 油圧閉回路のポンプ吐出量制御装置 |
JPS59169404U (ja) * | 1983-04-28 | 1984-11-13 | 新キャタピラ−三菱株式会社 | シリンダの油圧回路 |
JPS6126756U (ja) * | 1984-07-20 | 1986-02-18 | 株式会社小松製作所 | 掘削機の掘削作業機用油圧回路 |
-
1988
- 1988-03-16 JP JP1988033634U patent/JPH074322Y2/ja not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5336861A (en) * | 1976-09-16 | 1978-04-05 | Hitachi Ltd | Hydraulic elevator |
JPS58121301A (ja) * | 1982-01-11 | 1983-07-19 | Hitachi Constr Mach Co Ltd | 油圧閉回路のポンプ吐出量制御装置 |
JPS59169404U (ja) * | 1983-04-28 | 1984-11-13 | 新キャタピラ−三菱株式会社 | シリンダの油圧回路 |
JPS6126756U (ja) * | 1984-07-20 | 1986-02-18 | 株式会社小松製作所 | 掘削機の掘削作業機用油圧回路 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009144505A (ja) * | 2007-12-17 | 2009-07-02 | Volvo Construction Equipment Ab | 小旋回式掘削機のブーム衝撃緩和装置及びその制御方法 |
Also Published As
Publication number | Publication date |
---|---|
JPH074322Y2 (ja) | 1995-02-01 |