JPH0179908U - - Google Patents
Info
- Publication number
- JPH0179908U JPH0179908U JP1987175976U JP17597687U JPH0179908U JP H0179908 U JPH0179908 U JP H0179908U JP 1987175976 U JP1987175976 U JP 1987175976U JP 17597687 U JP17597687 U JP 17597687U JP H0179908 U JPH0179908 U JP H0179908U
- Authority
- JP
- Japan
- Prior art keywords
- control valve
- hydraulic cylinder
- control
- valve
- lifting means
- 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
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
- Harvester Elements (AREA)
Description
図面は本考案に係る作業車用の昇降制御装置の
実施例を示し、第１図は制御構成及び油圧回路構
成を示すブロツク図、第２図は全稈投入式コンバ
インの全体側面図、第３図は高さ検出用センサー
の構成を示す刈取前処理部の概略側面図である。
４……作業装置、５……油圧シリンダ、１３…
…第１制御弁、１６……第２制御弁、１９，２０
……絞り弁、１００……自動昇降手段、１０１…
…手動昇降手段。
The drawings show an embodiment of the lifting control device for a working vehicle according to the present invention, FIG. 1 is a block diagram showing the control configuration and hydraulic circuit configuration, FIG. 2 is an overall side view of a full-culm input type combine harvester, and FIG. The figure is a schematic side view of the reaping pre-processing section showing the configuration of the height detection sensor. 4... Working device, 5... Hydraulic cylinder, 13...
...First control valve, 16...Second control valve, 19,20
... Throttle valve, 100 ... Automatic lifting means, 101 ...
...Manual lifting means.
Claims (1)
、前記作業装置４を自動的に昇降する自動昇降手
段１００によつて自動的に操作される第１制御弁
１３と、手動昇降手段１０１によつて操作される
第２制御弁１６とが設けられ、前記第１制御弁１
３と前記第２制御弁１６とが、前記油圧シリンダ
５に並列状態で接続されている作業車用の昇降制
御装置であつて、前記両制御弁１３，１６の一方
が下降操作状態で、且つ、他方が上昇操作状態に
ある時には、前記油圧シリンダ５を上昇側に作動
させるべく、前記油圧シリンダ５から前記第１制
御弁１３を通して排出される圧油の流動に抵抗を
付与する絞り弁１９、及び、前記油圧シリンダ５
から前記第２制御弁１６を通して排出される圧油
の流動に抵抗を付与する絞り弁２０が設けられて
いる作業車用の昇降制御装置。 A single-acting hydraulic cylinder 5 for lifting and lowering the working device 4, a first control valve 13 that is automatically operated by an automatic lifting means 100 that automatically lifts and lowers the working device 4, and a manual lifting means 101. A second control valve 16 is provided, which is operated by the first control valve 1.
3 and the second control valve 16 are connected in parallel to the hydraulic cylinder 5, one of the control valves 13 and 16 is in a lowering operation state, and , a throttle valve 19 that applies resistance to the flow of pressure oil discharged from the hydraulic cylinder 5 through the first control valve 13 in order to operate the hydraulic cylinder 5 to the upward side when the other is in the upward operation state; and the hydraulic cylinder 5
A lift control device for a working vehicle, which is provided with a throttle valve 20 that provides resistance to the flow of pressure oil discharged from the second control valve 16 through the second control valve 16.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17597687U JPH077693Y2 (en) | 1987-11-18 | 1987-11-18 | Lift control device for work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17597687U JPH077693Y2 (en) | 1987-11-18 | 1987-11-18 | Lift control device for work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0179908U true JPH0179908U (en) | 1989-05-29 |
| JPH077693Y2 JPH077693Y2 (en) | 1995-03-01 |
Family
ID=31467747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17597687U Expired - Lifetime JPH077693Y2 (en) | 1987-11-18 | 1987-11-18 | Lift control device for work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH077693Y2 (en) |
-
1987
- 1987-11-18 JP JP17597687U patent/JPH077693Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH077693Y2 (en) | 1995-03-01 |
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