JPH0361804U - - Google Patents
Info
- Publication number
- JPH0361804U JPH0361804U JP12193589U JP12193589U JPH0361804U JP H0361804 U JPH0361804 U JP H0361804U JP 12193589 U JP12193589 U JP 12193589U JP 12193589 U JP12193589 U JP 12193589U JP H0361804 U JPH0361804 U JP H0361804U
- Authority
- JP
- Japan
- Prior art keywords
- hydraulic pump
- work equipment
- equipment lifting
- lifting lever
- oil
- 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
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Lifting Devices For Agricultural Implements (AREA)
- Operation Control Of Excavators (AREA)
- Fluid-Pressure Circuits (AREA)
- Harvester Elements (AREA)
Description
第１図は本考案装置が適用された農作業車であ
るコンバインの要部を示す側面概略図、第２図は
その油圧回路図、第３図は本考案装置の要部構造
説明図、第４図は本考案装置の作動態様を示す部
分図、第５図は変形例の要部構造を示す第３図同
様の説明図である。
１……作業機昇降用油圧アクチユエータ、２…
…走行伝動系の油圧アクチユエータ、３……油圧
ポンプ、４……分流器、５，６……回路、７……
回転数可変部、８……変速動作部、９……作業機
昇降レバー、１３……作業機。
Fig. 1 is a schematic side view showing the main parts of a combine harvester, which is an agricultural vehicle to which the device of the present invention is applied, Fig. 2 is its hydraulic circuit diagram, Fig. 3 is an explanatory diagram of the structure of the main parts of the device of the present invention, and Fig. 4 The figure is a partial view showing the operating mode of the device of the present invention, and FIG. 5 is an explanatory view similar to FIG. 3 showing the main structure of a modified example. 1...Hydraulic actuator for lifting and lowering work equipment, 2...
...Hydraulic actuator of travel transmission system, 3...Hydraulic pump, 4...Flow divider, 5, 6...Circuit, 7...
Rotation speed variable section, 8... Speed change operation section, 9... Working machine lifting lever, 13... Working machine.
Claims (1)
伝動系などに組み込まれる油圧アクチユエータ２
とを、油圧ポンプ３から分流器４を介して送油さ
れる二系統の回路５，６でそれぞれに作動・停止
制御するように構成された農作業車において、前
記油圧ポンプ３の駆動系に回転数可変部７を設け
、この回転数可変部の変速動作部８を作業機昇降
レバー９に連繋し、作業機昇降レバー９を上昇方
向に操作すると油圧ポンプ３が増速運転されるよ
うにしてあることを特徴とする農作業車における
油圧ポンプ駆動装置。 ２ 前記分流器４を分流量可変形に構成してその
切換動作部１０を作業機昇降レバー９に連繋し、
作業機昇降レバー９が中立又は下降位置にあると
きは作業機昇降側回路５への送油量が伝動ミツシ
ヨン側回路６への送油量より小になる状態に保た
れ、作業機昇降レバー９が上昇方向に操作される
と、両回路５，６への送油が略均等に行われる状
態に切り換わるように構成してある請求項１記載
の農作業車における油圧ポンプ駆動装置。[Scope of claim for utility model registration] 1 Hydraulic actuator 1 for lifting and lowering work equipment and hydraulic actuator 2 incorporated in a travel transmission system, etc.
In an agricultural vehicle configured to operate and stop the hydraulic pump 3 through two circuits 5 and 6, which are supplied with oil from the hydraulic pump 3 via a flow divider 4, the drive system of the hydraulic pump 3 has rotational power. A variable speed section 7 is provided, and a speed change operation section 8 of the variable speed section is connected to a work equipment lifting lever 9, so that when the working equipment lifting lever 9 is operated in the upward direction, the hydraulic pump 3 is operated at an increased speed. A hydraulic pump drive device for an agricultural vehicle, characterized in that: 2. The flow divider 4 is configured to have a variable flow rate, and its switching operation part 10 is connected to the work equipment lifting lever 9,
When the work equipment lifting lever 9 is in the neutral or lowered position, the amount of oil sent to the work equipment lifting side circuit 5 is kept smaller than the amount of oil sent to the transmission transmission side circuit 6, and the work equipment lifting lever 9 2. The hydraulic pump drive device for an agricultural vehicle according to claim 1, wherein when the hydraulic pump drive device is operated in the upward direction, the system switches to a state in which oil is supplied substantially equally to both circuits 5 and 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12193589U JPH0739371Y2 (en) | 1989-10-17 | 1989-10-17 | Hydraulic pump drive system for agricultural vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12193589U JPH0739371Y2 (en) | 1989-10-17 | 1989-10-17 | Hydraulic pump drive system for agricultural vehicles |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0361804U true JPH0361804U (en) | 1991-06-18 |
| JPH0739371Y2 JPH0739371Y2 (en) | 1995-09-13 |
Family
ID=31669956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12193589U Expired - Lifetime JPH0739371Y2 (en) | 1989-10-17 | 1989-10-17 | Hydraulic pump drive system for agricultural vehicles |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0739371Y2 (en) |
-
1989
- 1989-10-17 JP JP12193589U patent/JPH0739371Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0739371Y2 (en) | 1995-09-13 |
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