JPH02401U - - Google Patents
Info
- Publication number
- JPH02401U JPH02401U JP7879788U JP7879788U JPH02401U JP H02401 U JPH02401 U JP H02401U JP 7879788 U JP7879788 U JP 7879788U JP 7879788 U JP7879788 U JP 7879788U JP H02401 U JPH02401 U JP H02401U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- switching valve
- valve
- pilot check
- check valve
- 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
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000007790 scraping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
- Fluid-Pressure Circuits (AREA)
Description
図面は本考案の実施例を示し、第１図は収穫機
の平面図、第２図はその側面図、第３図は油圧回
路図、第４図はパイロツト逆止弁の要部断面図で
ある。
１…収穫機、２…走行機体、３，３…走行装置
、５…タンク、６ａ…扱胴、６…脱穀部、１１…
フイーダハウス、１２…昇降用油圧シリンダ、１
３…チエンコンベヤ、１５…刈取前処理装置、１
６…前端開口部、１７…介挿枠体、１８…プラツ
トホーム、２０…リール、２１…刈刃、２２，２
３…掻き板、２４…掻き込み棒、２５…オーガ、
３０…リール部油圧シリンダ、３１…ローリング
用油圧シリンダ、３２…油圧回路、３３…油圧ポ
ンプ、３４，３５…手動切換弁、３６…パイロツ
ト逆止弁、３７…リリーフ弁、３８…電磁切換弁
、３９…逆止め弁、４０…ばね、４１…パイロツ
ト弁。
The drawings show an embodiment of the present invention; Fig. 1 is a plan view of the harvester, Fig. 2 is a side view thereof, Fig. 3 is a hydraulic circuit diagram, and Fig. 4 is a sectional view of essential parts of the pilot check valve. be. DESCRIPTION OF SYMBOLS 1... Harvester, 2... Traveling body, 3, 3... Traveling device, 5... Tank, 6a... Handling cylinder, 6... Threshing section, 11...
Feeder house, 12... Hydraulic cylinder for lifting, 1
3... Chain conveyor, 15... Reaping pre-treatment device, 1
6...front end opening, 17...insertion frame, 18...platform, 20...reel, 21...cutting blade, 22,2
3... Scraping board, 24... Scraping rod, 25... Auger,
30...Reel part hydraulic cylinder, 31...Hydraulic cylinder for rolling, 32...Hydraulic circuit, 33...Hydraulic pump, 34, 35...Manual switching valve, 36...Pilot check valve, 37...Relief valve, 38...Solenoid switching valve, 39...Check valve, 40...Spring, 41...Pilot valve.
Claims (1)
圧アクチエータを、手動切換弁と、電磁切換弁と
により各々正逆駆動するように構成した油圧装置
において、油圧ポンプから油圧アクチエータへの
油圧回路に設けた３位置多ポート手動切換弁の下
流側にパイロツト逆止弁を接続し、該パイロツト
逆止弁と手動切換弁とを電磁切換弁にて接続し、
前記手動切換弁が中立位置のとき電磁切換弁に送
られた油圧にて前記パイロツト逆止弁におけるパ
イロツト弁に油圧が作用すると、油圧アクチエー
タからの逆流を許するよに作動させるように構成
したことを特徴とする作業機における油圧装置。 In a hydraulic system configured to drive a hydraulic actuator such as a hydraulic cylinder in a working machine such as a harvester in the forward or reverse direction using a manual switching valve and an electromagnetic switching valve, the hydraulic actuator is installed in the hydraulic circuit from the hydraulic pump to the hydraulic actuator. A pilot check valve is connected to the downstream side of the 3-position multi-port manual switching valve, and the pilot check valve and the manual switching valve are connected by an electromagnetic switching valve,
When the manual switching valve is in the neutral position, when hydraulic pressure applied to the pilot check valve by the hydraulic pressure sent to the electromagnetic switching valve acts on the pilot valve of the pilot check valve, the valve is operated to allow backflow from the hydraulic actuator. A hydraulic system for a work machine characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7879788U JPH02401U (en) | 1988-06-14 | 1988-06-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7879788U JPH02401U (en) | 1988-06-14 | 1988-06-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02401U true JPH02401U (en) | 1990-01-05 |
Family
ID=31303695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7879788U Pending JPH02401U (en) | 1988-06-14 | 1988-06-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02401U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06277172A (en) * | 1993-03-24 | 1994-10-04 | Clean Tex Japan Kk | Dust control mat |
| JP2002195205A (en) * | 2000-12-27 | 2002-07-10 | Tokimec Jido Kenki:Kk | Working vehicle hydraulics |
| CN100352734C (en) * | 2002-12-25 | 2007-12-05 | 三洋电机株式会社 | Drug supply device |
| JP2021004653A (en) * | 2019-06-26 | 2021-01-14 | 株式会社クボタ | Control valve and harvesting machine |
-
1988
- 1988-06-14 JP JP7879788U patent/JPH02401U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06277172A (en) * | 1993-03-24 | 1994-10-04 | Clean Tex Japan Kk | Dust control mat |
| JP2002195205A (en) * | 2000-12-27 | 2002-07-10 | Tokimec Jido Kenki:Kk | Working vehicle hydraulics |
| CN100352734C (en) * | 2002-12-25 | 2007-12-05 | 三洋电机株式会社 | Drug supply device |
| JP2021004653A (en) * | 2019-06-26 | 2021-01-14 | 株式会社クボタ | Control valve and harvesting machine |
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