JPH025646U - - Google Patents
Info
- Publication number
- JPH025646U JPH025646U JP8441188U JP8441188U JPH025646U JP H025646 U JPH025646 U JP H025646U JP 8441188 U JP8441188 U JP 8441188U JP 8441188 U JP8441188 U JP 8441188U JP H025646 U JPH025646 U JP H025646U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic
- hydraulic pump
- engine
- pump
- clutch
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 1
Landscapes
- Arrangement Of Transmissions (AREA)
- Control Of Fluid Gearings (AREA)
- Lifting Devices For Agricultural Implements (AREA)
Description
第１図は本考案の実施例を示す油圧回路図、第
２〜５図は比較例を示しており、第２図は小油圧
ポンプと油圧クラツチとを直接接続した説明図、
第３図は小油圧ポンプと油圧クラツチとを手動切
換弁を介して接続した説明図、第４，５図は小油
圧ポンプと油圧クラツチとを温度センサ作動電磁
切換弁と負圧センサ作動電磁切換弁とを夫々介し
て接続した説明図である。
１…エンジン、３…小油圧ポンプ、４…油圧ク
ラツチ、５…大油圧ポンプ、６…油タンク、８…
油圧装置、１１…油圧シリンダ、１２…ポジシヨ
ンコントロール弁、１３…ドラフトコントロール
弁、１７…戻し油路、１８…作動油路、１９…電
磁切換弁、２１…スプール、２２…スプール、Ｓ
…油圧需要検出センサ。
Fig. 1 is a hydraulic circuit diagram showing an embodiment of the present invention, Figs. 2 to 5 show comparative examples, and Fig. 2 is an explanatory diagram showing a direct connection between a small hydraulic pump and a hydraulic clutch.
Figure 3 is an explanatory diagram in which a small hydraulic pump and a hydraulic clutch are connected via a manual switching valve, and Figures 4 and 5 are an explanatory diagram in which a small hydraulic pump and a hydraulic clutch are connected via a temperature sensor activated electromagnetic switching valve and a negative pressure sensor activated electromagnetic switching valve. FIG. 2 is an explanatory diagram showing connection with valves, respectively. 1...Engine, 3...Small hydraulic pump, 4...Hydraulic clutch, 5...Large hydraulic pump, 6...Oil tank, 8...
Hydraulic system, 11... Hydraulic cylinder, 12... Position control valve, 13... Draft control valve, 17... Return oil path, 18... Hydraulic oil path, 19... Solenoid switching valve, 21... Spool, 22... Spool, S
...Hydraulic demand detection sensor.
Claims (1)
、エンジン１で駆動自在にしたトラクタの油圧シ
ステムにおいて、前記エンジン１と油圧ポンプ５
との間に動力断接用の油圧クラツチ４を設け、前
記油圧ポンプ５より小容量の小油圧ポンプ３を設
けてエンジン１で駆動自在にし、油圧クラツチ４
と小油圧ポンプ３とを切換弁１９を介し接続し、
前記油圧装置８に油圧需要検出センサＳを設け、
この油圧需要検出センサＳの検出信号で切換弁１
９を介して油圧クラツチ４を接状態に切換可能に
したことを特徴とするトラクタの油圧システム。 In a tractor hydraulic system in which a hydraulic pump 5 that supplies hydraulic oil to a hydraulic device 8 is freely driven by an engine 1, the engine 1 and the hydraulic pump 5
A hydraulic clutch 4 for power connection/disconnection is provided between the hydraulic pump 5 and a small hydraulic pump 3 having a smaller capacity than the hydraulic pump 5 so that it can be freely driven by the engine 1.
and a small hydraulic pump 3 are connected via a switching valve 19,
The hydraulic system 8 is provided with a hydraulic demand detection sensor S,
With the detection signal of this hydraulic pressure demand detection sensor S, the switching valve 1
A hydraulic system for a tractor, characterized in that a hydraulic clutch 4 can be switched to an engaged state via a hydraulic clutch 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8441188U JPH025646U (en) | 1988-06-24 | 1988-06-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8441188U JPH025646U (en) | 1988-06-24 | 1988-06-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH025646U true JPH025646U (en) | 1990-01-16 |
Family
ID=31309101
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8441188U Pending JPH025646U (en) | 1988-06-24 | 1988-06-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH025646U (en) |
-
1988
- 1988-06-24 JP JP8441188U patent/JPH025646U/ja active Pending