JPH0470386U - - Google Patents
Info
- Publication number
- JPH0470386U JPH0470386U JP11217690U JP11217690U JPH0470386U JP H0470386 U JPH0470386 U JP H0470386U JP 11217690 U JP11217690 U JP 11217690U JP 11217690 U JP11217690 U JP 11217690U JP H0470386 U JPH0470386 U JP H0470386U
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- vertical movement
- boom
- calculation means
- vertical
- 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
- 238000010586 diagram Methods 0.000 description 3
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Landscapes
- Operation Control Of Excavators (AREA)
- Earth Drilling (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990112176U JP2537749Y2 (ja) | 1990-10-25 | 1990-10-25 | 伸縮ブームの垂直移動制御装置 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1990112176U JP2537749Y2 (ja) | 1990-10-25 | 1990-10-25 | 伸縮ブームの垂直移動制御装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0470386U true JPH0470386U (ko) | 1992-06-22 |
| JP2537749Y2 JP2537749Y2 (ja) | 1997-06-04 |
Family
ID=31859676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1990112176U Expired - Lifetime JP2537749Y2 (ja) | 1990-10-25 | 1990-10-25 | 伸縮ブームの垂直移動制御装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2537749Y2 (ko) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774437A (en) * | 1981-06-01 | 1982-05-10 | Hitachi Constr Mach Co Ltd | Automatic operating device for straight excavation of hydraulic shovel |
| JPS63219789A (ja) * | 1987-03-06 | 1988-09-13 | 日立建機株式会社 | ア−ム式作業機 |
-
1990
- 1990-10-25 JP JP1990112176U patent/JP2537749Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5774437A (en) * | 1981-06-01 | 1982-05-10 | Hitachi Constr Mach Co Ltd | Automatic operating device for straight excavation of hydraulic shovel |
| JPS63219789A (ja) * | 1987-03-06 | 1988-09-13 | 日立建機株式会社 | ア−ム式作業機 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2537749Y2 (ja) | 1997-06-04 |