JP2004124503A - Working machine operating device for tractor - Google Patents

Working machine operating device for tractor Download PDF

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Publication number
JP2004124503A
JP2004124503A JP2002289983A JP2002289983A JP2004124503A JP 2004124503 A JP2004124503 A JP 2004124503A JP 2002289983 A JP2002289983 A JP 2002289983A JP 2002289983 A JP2002289983 A JP 2002289983A JP 2004124503 A JP2004124503 A JP 2004124503A
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Japan
Prior art keywords
hydraulic
valves
operating
tractor
operated
Prior art date
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JP2002289983A
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Japanese (ja)
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JP4055538B2 (en
Inventor
Ryota Nagano
永野　良太
Hidetsugu Tomioka
富岡　英嗣
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the operation of a front loader and to simplify the constitution. <P>SOLUTION: Parallel twin first and second hydraulic valves 14, 15 for operating the front loader is mounted to a machine body so that the operating direction of spool valves 14a, 15a are inclined almost at 45° to the longitudinal direction of the machine body from the top view and inclined downward to the rear from the side view, and the first hydraulic valve 14 is operated by the longitudinal operation of a single joy stick lever 17, while the second hydraulic valve 15 is operated by the lateral operation to lift a boom of the front loader and to rotate a shovel vertically. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
この発明は、トラクタの作業機操作装置に関するものである。
【０００２】
【従来技術】
フロントローダ作動用の並列２連の第１・第２油圧バルブを機体に取り付け、単一の操作レバーにより第１・第２油圧バルブのスプールバルブを操作するトラクタは公知である（例えば、特許文献１）。
【０００３】
【特許文献１】
特公平７−１１６７１９号公報
【０００４】
【発明が解決しようとする問題点】
この発明は、フロントローダ作動用の並列２連の第１・第２油圧バルブを、単一の操作レバーにより操作するにあたり、操作レバーの操作方向を前後方向及び左右方向の２方向の操作で夫れ夫れの油圧バルブを操作して操作の明確化を図ると共に、構成の簡素化を図ろうとするものである。
【０００５】
【問題を解決するための手段】
このような技術的課題を解決するために、請求項１の発明は、機体に対してフロントローダ作動用の並列２連の第１・第２油圧バルブ１４，１５を機体に取り付けるにあたり、そのスプールバルブ１４ａ，１５ａの作動方向を平面視で機体の前後方向に対して略４５度に傾斜した状態で取り付け、単一のジョイスティックレバー１７の前後方向の操作で第１・第２油圧バルブ１４，１５の何れか一方を作動し、左右方向の操作で第１・第２油圧バルブ１４，１５の何れか他方を作動することを特徴とする。
【０００６】
請求項１の発明では、並列２連の第１・第２油圧バルブ１４，１５は、そのスプールバルブ１４ａ，１５ａの作動方向が平面視で機体の前後方向に対して略４５度に傾斜した状態に設けられていて、単一のジョイスティックレバー１７の前後方向の操作により第１・第２油圧バルブ１４，１５の何れか一方が作動され、ジョイスティックレバー１７の左右方向の操作により第１・第２油圧バルブ１４，１５の何れか他方が作動され、フロントローダのブームを昇降しショベルを上下回動させる。
【０００７】
請求項２の発明は、請求項１の発明に加えて、第１・第２油圧バルブ１４，１５のスプールバルブ１４ａ，１５ａの作動方向を側面視で後下がりの傾斜状にしたことを特徴とする。
請求項２の発明では、並列２連の第１・第２油圧バルブ１４，１５は、そのスプールバルブ１４ａ，１５ａの作動方向が平面視で機体の前後方向に対して略４５度に傾斜した状態で、且つ、側面視で後下がりの傾斜状に設けられていて、単一のジョイスティックレバー１７の前後方向の操作により第１・第２油圧バルブ１４，１５の何れか一方が作動され、ジョイスティックレバー１７の左右方向の操作により第１・第２油圧バルブ１４，１５の何れか他方が作動され、フロントローダのブームを昇降しショベルを上下回動させる。
【０００８】
請求項３の発明は、請求項１の発明に加えて、第１・第２油圧バルブ１４、１５及びジョイスティックレバー１７をフェンダ９ａと座席１２の間に配置したことを特徴とする。
請求項３の発明では、並列２連の第１・第２油圧バルブ１４，１５は、そのスプールバルブ１４ａ，１５ａの作動方向を平面視で機体の前後方向に対して略４５度に傾斜した状態にして、フェンダ９ａと座席１２の間に設けられていて、フェンダ９ａと座席１２の間に位置している単一のジョイスティックレバー１７の前後方向の操作により第１・第２油圧バルブ１４，１５の何れか一方が作動され、ジョイスティックレバー１７の左右方向の操作により第１・第２油圧バルブ１４，１５の何れか他方が作動され、フロントローダのブームを昇降しショベルを上下回動させる。
【０００９】
請求項４の発明は、請求項１の発明に加えて、第１油圧バルブ１４の第１油圧取出口２４、第２油圧バルブ１５の第２油圧取出口２５、後油圧バルブの後油圧取出口２２、中間油圧バルブの中間油圧取出口２３をトラクタのステップ１３の下方に前後方向に沿わせて配置したことを特徴とする。
【００１０】
請求項４の発明では、請求項１の発明に加えて、第１・第２油圧バルブ１４，１５からの圧油はステップ１３の下方に設けられている第１油圧取出口２４、第２油圧取出口２５を経てフロントローダに送られ、また、後油圧バルブ及び中間油圧バルブからの圧油はステップ１３の下方に設けられている後油圧取出口２２、中間油圧取出口２３を経てそれぞれ後作業機及び中間作業機に送られる。
【００１１】
【発明の効果】
請求項１の発明は、ジョイスティックレバー１７を前後方向、左右方向及び斜め４５度の傾斜方向に操作することにより、第１・第２油圧バルブ１４，１５の何れか一方の単独作動及び同時作動ができて、フロントローダの操作が容易で明確となり、構成を簡素化できる。
【００１２】
請求項２の発明は、請求項１の発明の効果に加えて、第１・第２油圧バルブ１４，１５のスプールバルブ１４ａ，１５ａとジョイスティックレバー１７とを接近させることができて、連係構成をより簡素なものとすることができる。
請求項３の発明は、請求項１の発明の効果に加えて、第１・第２油圧バルブ１４，１５及びジョイスティックレバー１７を、フェンダ９ａと座席１２の間に配置することにより、空間部の有効利用を図り、コンパクトな構成とすることができる。
【００１３】
請求項４の発明は、請求項１の発明に加えて、第１油圧バルブ１４、第２油圧バルブ１５、後油圧バルブ、中間油圧バルブからの圧油は、機体の中心部に位置している油圧取出口２２，２３，２４，２５を経てフロントローダ、後作業機及び中間作業機に送られるので、油圧の取出を容易なものとすることができる。
【００１４】
【発明の実施の形態】
以下、本発明の実施例の形態について説明する。
この発明は乗用四輪型のトラクタ１に実施されている。図１に示すように、トラクタ１は、前後方向に長く構成されている機体フレーム２の前部上方にエンジン３を搭載している。機体フレーム２の前部下方にはフロントアクスルケース４をセンターピポット回りに左右揺動自在に取り付け、フロントアクスルケース４の両端部にキングピンを介して左・右前輪５，５を操舵自在に取り付け、ステアリングハンドル６により左・右前輪５，５を操舵する構成としている。機体フレーム２の後部に設けられているミッションケース７には、左・右後車軸を軸架し、左・右後車軸の両端部に左・右後輪８，８を取り付けている。
【００１５】
エンジン３の外周部をボンネット９及びサイドカバー１０で被覆し、ボンネット９の後部上方にステアリングハンドル６を配置している。ミッションケース７の上方には、座席ボックス１１を介して座席１２を設け、座席ボックス１１とサイドカバー１０の間には、機体フレーム２の上方を覆うようにステップ１３を設けている。
【００１６】
次に、図２〜図６に基づき油圧バルブの操作構成について説明する。
前作業機であるフロントローダ（図示省略）作動用の並列２連の第１・第２油圧バルブ１４，１５は、ミッションケース７の上方に設けられている油圧ケース１６の前側に取り付けられていて、第１・第２油圧バルブ１４，１５はフェンダ９ａと座席１２の間に配置されている。
【００１７】
そして、第１・第２油圧バルブ１４，１５のスプールバルブ１４ａ，１５ａの作動方向は、側面視でに略４５度の後上り傾斜で、且つ、平面視で図３に示すように、機体の前後方向線Ａに対して略４５度傾斜した後狭まり状態に配置されている。
【００１８】
座席１２の例えば右側には、前後方向及び左右方向に自在に操作できるジョイスティックレバー１７を設け、このレバーにより第１・第２油圧バルブ１４，１５を操作するように構成している。。
第１・第２油圧バルブ１４，１５を機体２の前後方向線に対して略４５度傾斜するように取り付け（図３に図示）、また、図５に示すように、第１・第２油圧バルブ１４，１５の本体から上方に延出したステー１８に作動アーム１９，１９を軸支し、その作動アーム１９，１９の中途部の長孔に第１・第２油圧バルブ１４，１５のスプールバルブ１４ａ，１５ａを連係している。
【００１９】
座席１２の右側方には前後方向及び左右方向に操作自在のジョイスティックレバー１７を設け、ジョイスティックレバー１７の基部から左右斜め前方に略９０度隔て左右一対の操作アーム２０，２０を延出し、操作アーム２０，２０の先端にロッド２１，２１の一端を枢支連結すると共に、ロッド２１，２１の他端を前記作動アーム１９，１９の下端部に枢支連結している。
【００２０】
しかして、図６に示すように、ジョイスティックレバー１７を前後方向線Ｄのアップ位置Ｄ１、中立位置Ｄ２、下げ位置Ｄ３、フロート位置Ｄ４に操作すると、第１油圧バルブ１４のスプールバルブ１４ａだけが作動されて、第１油圧シリンダ（図示省略）に圧油を給排し、フロントローダ（図示省略）のブームが昇降作動される。
【００２１】
また、ジョイスティックレバー１７を左右方向線Ｅのアップ位置Ｅ１、中立位置Ｄ２、下げ位置Ｅ２、高速下げ位置Ｅ３に操作すると、第２油圧バルブ１５のスプールバルブ１５ａだけが作動されて、第２油圧シリンダ（図示省略）に圧油を給排し、フロントローダ（図示省略）のショベルを上下回動させる。
【００２２】
また、ジョイスティックレバー１７を前後方向線に対して斜め４５度の傾斜方向線Ｆに沿って操作すると、第１・第２油圧バルブ１４，１５のスプールバルブ１４ａ，１５ａを同時に作動し、フロントローダのブームの昇降及びショベルの回動を同時に行なうことができる。
【００２３】
第１・第２油圧バルブ１４，１５を前記のように設けることにより、ジョイスティックレバー１７と第１・第２油圧バルブ１４，１５との距離を短くして、ロッド２１，２１による連係を可能にし、安価なものとすることができる。
第１・第２油圧バルブ１４，１５を配置するにあたり、スプールバルブ１４ａ，１５ａの作動方向を水平あるいは垂直にすると、操作レバーの操作方向が規制されることになり、油圧バルブと操作レバーとの間をロッドで連結すると、操作レバーが前後方向及び左右方向にうまく作動せず、ケーブル等で連係しなければならず構成が複雑になるという不具合が発生する。しかし、前記のように構成することにより、ロッド２１，２１の引く方向がジョイスティックレバー１７の前後方向の作動と一致し、構成を簡単にし安価なものとすることができる。
【００２４】
次に、図７に基づき第１・第２油圧バルブ１４，１５から前後の作業機への油圧配管について説明する。
ミッションケース７の上方に油圧ケース１６を取り付け、油圧ケース１６内に主油圧バルブ（図示省略）を設け、第１・第２油圧バルブ１４，１５を、フェンダ９ａと座席１２の間に位置するようにして油圧ケース１６の前側に取り付けている。
【００２５】
油圧ケース１６内に設けた後油圧バルブ（図示省略）に連通している後部作業機昇降用の後油圧取出口２２を設け、油圧ケース１６内に設けた中間油圧バルブ（図示省略）に連通している中間油圧取出口２３を設け、第１油圧バルブ１４からフロントローダのブーム昇降用の第１油圧取出口２４を設け、第２油圧バルブ１５からフロントローダのショベル作動用の第２油圧取出口２５を設け、これらの油圧取出口２２，２３，２４，２５をステップ１３の下方に前後方向に沿わせて横向きに配置している。なお、これらの油圧取出口２２，２３，２４，２５にサブの油圧取出口を設けてもよい。
【００２６】
しかして、これらの油圧取出口２２，２３，２４，２５が機体の中心部に位置しているので、前後及び中間の作業機への油圧の取出を容易なものとすることができる。
【図面の簡単な説明】
【図１】トラクタの側面図である。
【図２】要部の側面図である。
【図３】要部の平面図である。
【図４】要部の正面図である。
【図５】要部の側面図である。
【図６】要部の平面図である。
【図７】要部の平面図である。
【符号の説明】
１　　トラクタ
３　　エンジン
９ａ　フェンダ
１２　　座席
１４　　第１油圧バルブ
１４ａ　　スプールバルブ
１５　　第２油圧バルブ
１５ａ　　スプールバルブ
１７　　ジョイスティックレバー
２２　　後油圧取出口
２３　　中間油圧取出口
２４　　第１油圧取出口
２５　　第２油圧取出口[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a tractor operation device.
[0002]
[Prior art]
2. Description of the Related Art A tractor is known in which two parallel first and second hydraulic valves for operating a front loader are attached to an airframe, and a single operation lever operates a spool valve of the first and second hydraulic valves (for example, Patent Document 1). 1).
[0003]
[Patent Document 1]
Japanese Patent Publication No. 7-116719
[Problems to be solved by the invention]
According to the present invention, when operating the two parallel first and second hydraulic valves for operating the front loader with a single operation lever, the operation direction of the operation lever is controlled in two directions, a front-rear direction and a left-right direction. The purpose is to clarify the operation by operating each of the hydraulic valves, and to simplify the configuration.
[0005]
[Means to solve the problem]
In order to solve such a technical problem, the invention according to claim 1 relates to a method in which two parallel first and second hydraulic valves 14 and 15 for operating a front loader are mounted on a fuselage of a fuselage. The first and second hydraulic valves 14, 15 are operated by operating the single joystick lever 17 in the front-rear direction, with the operation directions of the valves 14a, 15a inclined at approximately 45 degrees with respect to the front-rear direction of the body in plan view. , And one of the first and second hydraulic valves 14 and 15 is operated by an operation in the left-right direction.
[0006]
According to the first aspect of the present invention, the first and second hydraulic valves 14 and 15 in parallel are arranged such that the operating directions of the spool valves 14a and 15a are inclined at approximately 45 degrees with respect to the longitudinal direction of the body in plan view. One of the first and second hydraulic valves 14 and 15 is operated by a single operation of the joystick lever 17 in the front-rear direction, and the first and second hydraulic valves are operated by a left and right operation of the joystick lever 17. Either of the hydraulic valves 14 and 15 is actuated to raise and lower the boom of the front loader and rotate the shovel up and down.
[0007]
According to a second aspect of the present invention, in addition to the first aspect, the operating directions of the spool valves 14a and 15a of the first and second hydraulic valves 14 and 15 are inclined backward and downward in a side view. I do.
According to the second aspect of the present invention, the operating direction of the spool valves 14a, 15a of the two parallel first and second hydraulic valves 14, 15 is inclined at approximately 45 degrees with respect to the longitudinal direction of the body in plan view. And one of the first and second hydraulic valves 14, 15 is operated by operating a single joystick lever 17 in the front-rear direction, and the joystick lever is provided. One of the first and second hydraulic valves 14, 15 is actuated by the left-right operation of 17, and the boom of the front loader is raised and lowered to rotate the shovel up and down.
[0008]
According to a third aspect of the present invention, in addition to the first aspect, the first and second hydraulic valves 14, 15 and the joystick lever 17 are arranged between the fender 9a and the seat 12.
According to the third aspect of the present invention, the two parallel first and second hydraulic valves 14, 15 are arranged such that the operating directions of the spool valves 14a, 15a are inclined at approximately 45 degrees with respect to the longitudinal direction of the body in plan view. The first and second hydraulic valves 14, 15 are provided between the fender 9a and the seat 12 by operating a single joystick lever 17 located between the fender 9a and the seat 12 in the front-rear direction. Is operated, and the other of the first and second hydraulic valves 14, 15 is operated by operating the joystick lever 17 in the left-right direction, so that the boom of the front loader is raised and lowered, and the shovel is rotated up and down.
[0009]
According to a fourth aspect of the present invention, in addition to the first aspect, a first hydraulic outlet 24 of the first hydraulic valve 14, a second hydraulic outlet 25 of the second hydraulic valve 15, and a rear hydraulic outlet of the rear hydraulic valve. 22, the intermediate hydraulic outlet 23 of the intermediate hydraulic valve is disposed below the step 13 of the tractor along the front-rear direction.
[0010]
According to the fourth aspect of the present invention, in addition to the first aspect, the pressure oil from the first and second hydraulic valves 14 and 15 is supplied to the first hydraulic outlet 24 provided below the step 13 and the second hydraulic pressure The hydraulic oil from the rear hydraulic valve and the intermediate hydraulic valve is sent to the front loader via the outlet 25, and the hydraulic oil from the rear hydraulic valve and the intermediate hydraulic valve is passed through the rear hydraulic outlet 22 and the intermediate hydraulic outlet 23 provided below the step 13, respectively. Machine and intermediate work machine.
[0011]
【The invention's effect】
According to the first aspect of the present invention, by operating the joystick lever 17 in the front-rear direction, the left-right direction, and the oblique direction at an angle of 45 degrees, either one of the first and second hydraulic valves 14 and 15 can be operated independently or simultaneously. As a result, the operation of the front loader is easy and clear, and the configuration can be simplified.
[0012]
According to the second aspect of the present invention, in addition to the effect of the first aspect, the spool valves 14a and 15a of the first and second hydraulic valves 14 and 15 and the joystick lever 17 can be brought close to each other, so that the linkage structure is improved. It can be simpler.
According to a third aspect of the present invention, in addition to the effect of the first aspect of the present invention, the first and second hydraulic valves 14, 15 and the joystick lever 17 are arranged between the fender 9a and the seat 12, so that the space can be reduced. Effective utilization can be achieved and a compact configuration can be achieved.
[0013]
According to a fourth aspect of the present invention, in addition to the first aspect, the hydraulic oil from the first hydraulic valve 14, the second hydraulic valve 15, the rear hydraulic valve, and the intermediate hydraulic valve is located at the center of the body. Since the oil is sent to the front loader, the post-working machine, and the intermediate working machine via the hydraulic outlets 22, 23, 24, and 25, the hydraulic pressure can be easily taken out.
[0014]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described.
The present invention is applied to a riding four-wheel tractor 1. As shown in FIG. 1, the tractor 1 has an engine 3 mounted above a front part of a body frame 2 which is long in the front-rear direction. A front axle case 4 is attached to the front lower part of the fuselage frame 2 so as to swing left and right around a center pivot, and left and right front wheels 5 and 5 are attached to both ends of the front axle case 4 via king pins so as to be steerable. The left and right front wheels 5, 5 are steered by the steering handle 6. A left and right rear axle is mounted on a transmission case 7 provided at a rear portion of the body frame 2, and left and right rear wheels 8, 8 are attached to both ends of the left and right rear axle.
[0015]
An outer peripheral portion of the engine 3 is covered with a hood 9 and a side cover 10, and a steering handle 6 is disposed above a rear portion of the hood 9. A seat 12 is provided above the transmission case 7 via a seat box 11, and a step 13 is provided between the seat box 11 and the side cover 10 so as to cover above the body frame 2.
[0016]
Next, an operation configuration of the hydraulic valve will be described with reference to FIGS.
The first and second hydraulic valves 14 and 15 for operating a front loader (not shown), which is a pre-working machine, are mounted on the front side of a hydraulic case 16 provided above the transmission case 7. The first and second hydraulic valves 14, 15 are arranged between the fender 9a and the seat 12.
[0017]
The operating direction of the spool valves 14a and 15a of the first and second hydraulic valves 14 and 15 is approximately 45 degrees in a side view and a rear ascending slope, and as shown in FIG. After being inclined at approximately 45 degrees with respect to the front-back direction line A, they are arranged in a narrowed state.
[0018]
On the right side of the seat 12, for example, a joystick lever 17 that can be freely operated in the front-rear direction and the left-right direction is provided, and the first and second hydraulic valves 14, 15 are operated by this lever. .
The first and second hydraulic valves 14 and 15 are mounted so as to be inclined at approximately 45 degrees with respect to the longitudinal line of the body 2 (shown in FIG. 3), and as shown in FIG. Actuating arms 19 and 19 are pivotally supported on stays 18 extending upward from the bodies of the valves 14 and 15, and spools of the first and second hydraulic valves 14 and 15 are provided in elongated holes in the operating arms 19 and 19. The valves 14a and 15a are linked.
[0019]
A joystick lever 17 operable in the front-rear direction and the left-right direction is provided on the right side of the seat 12. One ends of the rods 21 and 21 are pivotally connected to the ends of the rods 20 and 20, and the other ends of the rods 21 and 21 are pivotally connected to the lower ends of the operation arms 19 and 19.
[0020]
As shown in FIG. 6, when the joystick lever 17 is operated to the up position D1, the neutral position D2, the down position D3, and the float position D4 of the front and rear direction line D, only the spool valve 14a of the first hydraulic valve 14 operates. Then, pressure oil is supplied to and discharged from a first hydraulic cylinder (not shown), and a boom of a front loader (not shown) is moved up and down.
[0021]
When the joystick lever 17 is operated to the up position E1, the neutral position D2, the down position E2, and the high speed down position E3 of the left-right direction line E, only the spool valve 15a of the second hydraulic valve 15 is operated, and the second hydraulic cylinder (Not shown) to supply and discharge pressure oil, and the shovel of a front loader (not shown) is turned up and down.
[0022]
Further, when the joystick lever 17 is operated along an inclination direction line F at an angle of 45 degrees with respect to the front-rear direction line, the spool valves 14a, 15a of the first and second hydraulic valves 14, 15 are simultaneously operated, and the front loader is operated. The boom can be raised and lowered and the shovel can be rotated at the same time.
[0023]
By providing the first and second hydraulic valves 14 and 15 as described above, the distance between the joystick lever 17 and the first and second hydraulic valves 14 and 15 is shortened, and the linkage by the rods 21 and 21 is enabled. , And can be inexpensive.
In arranging the first and second hydraulic valves 14, 15, if the operating direction of the spool valves 14a, 15a is set to be horizontal or vertical, the operating direction of the operating lever will be restricted, and the connection between the hydraulic valve and the operating lever will be restricted. If the space is connected by a rod, the operation lever does not operate well in the front-rear direction and the left-right direction, and the connection must be linked by a cable or the like. However, with the above configuration, the pulling directions of the rods 21 and 21 coincide with the operation of the joystick lever 17 in the front-rear direction, so that the configuration can be simplified and the cost can be reduced.
[0024]
Next, hydraulic piping from the first and second hydraulic valves 14, 15 to the front and rear working machines will be described with reference to FIG.
A hydraulic case 16 is mounted above the transmission case 7, and a main hydraulic valve (not shown) is provided in the hydraulic case 16 so that the first and second hydraulic valves 14 and 15 are located between the fender 9 a and the seat 12. And is attached to the front side of the hydraulic case 16.
[0025]
A rear hydraulic outlet 22 for raising and lowering the rear working machine, which communicates with a hydraulic valve (not shown) provided in the hydraulic case 16, is connected to an intermediate hydraulic valve (not shown) provided in the hydraulic case 16. , A first hydraulic outlet 24 for raising and lowering the boom of the front loader from the first hydraulic valve 14, and a second hydraulic outlet for operating the shovel of the front loader from the second hydraulic valve 15. 25, and these hydraulic outlets 22, 23, 24, 25 are arranged laterally below the step 13 along the front-rear direction. Note that a sub hydraulic outlet may be provided in each of the hydraulic outlets 22, 23, 24, and 25.
[0026]
Since the hydraulic outlets 22, 23, 24, and 25 are located at the center of the machine body, the hydraulic pressure can be easily taken out to the front, rear, and intermediate working machines.
[Brief description of the drawings]
FIG. 1 is a side view of a tractor.
FIG. 2 is a side view of a main part.
FIG. 3 is a plan view of a main part.
FIG. 4 is a front view of a main part.
FIG. 5 is a side view of a main part.
FIG. 6 is a plan view of a main part.
FIG. 7 is a plan view of a main part.
[Explanation of symbols]
1 Tractor 3 Engine 9a Fender 12 Seat 14 First hydraulic valve 14a Spool valve 15 Second hydraulic valve 15a Spool valve 17 Joystick lever 22 Rear hydraulic outlet 23 Intermediate hydraulic outlet 24 First hydraulic outlet 25 Second hydraulic outlet

Claims (4)

機体に対してフロントローダ作動用の並列２連の第１・第２油圧バルブ１４，１５を機体に取り付けるにあたり、そのスプールバルブ１４ａ，１５ａの作動方向を平面視で機体の前後方向に対して略４５度に傾斜した状態で取り付け、単一のジョイスティックレバー１７の前後方向の操作で第１・第２油圧バルブ１４，１５の何れか一方を作動し、左右方向の操作で第１・第２油圧バルブ１４，１５の何れか他方を作動することを特徴とするトラクタの作業機操作装置。When attaching the two parallel first and second hydraulic valves 14 and 15 for operating the front loader to the fuselage, the operating directions of the spool valves 14a and 15a are substantially equal to the longitudinal direction of the fuselage in plan view. Attached in a state inclined at 45 degrees, one of the first and second hydraulic valves 14 and 15 is operated by operating the single joystick lever 17 in the front-rear direction, and the first and second hydraulic valves are operated by operating the left and right directions. A tractor operating device for operating a tractor, wherein one of the valves 14 and 15 is operated. 第１・第２油圧バルブ１４，１５のスプールバルブ１４ａ，１５ａの作動方向を側面視で後下がりの傾斜状にしたことを特徴とする請求項１記載のトラクタの作業機操作装置。The operating device for a tractor working machine according to claim 1, wherein the operating directions of the spool valves (14a, 15a) of the first and second hydraulic valves (14, 15) are inclined backward and downward in a side view. 第１・第２油圧バルブ１４、１５及びジョイスティックレバー１７をフェンダ９ａと座席１２の間に配置したことを特徴とする請求項１記載のトラクタの作業機操作装置。The operating device for a tractor working machine according to claim 1, wherein the first and second hydraulic valves (14, 15) and the joystick lever (17) are arranged between the fender (9a) and the seat (12). 第１油圧バルブ１４の第１油圧取出口２４、第２油圧バルブ１５の第２油圧取出口２５、後油圧バルブの後油圧取出口２２、中間油圧バルブの中間油圧取出口２３をトラクタのステップ１３の下方に前後方向に沿わせて配置したことを特徴とする請求項１記載のトラクタの作業機操作装置。The first hydraulic outlet 24 of the first hydraulic valve 14, the second hydraulic outlet 25 of the second hydraulic valve 15, the rear hydraulic outlet 22 of the rear hydraulic valve, and the intermediate hydraulic outlet 23 of the intermediate hydraulic valve are connected to the step 13 of the tractor. 2. The tractor working machine operating device according to claim 1, wherein the tractor working machine operating device is disposed below and along the front-back direction.
JP2002289983A 2002-10-02 2002-10-02 Tractor work equipment operating device Expired - Fee Related JP4055538B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007255150A (en) * 2006-03-24 2007-10-04 Kubota Corp Work vehicle
EP1876303A1 (en) * 2006-07-05 2008-01-09 Kobleco Construction Machinery Co., Ltd. Construction machine

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007255150A (en) * 2006-03-24 2007-10-04 Kubota Corp Work vehicle
JP4679404B2 (en) * 2006-03-24 2011-04-27 株式会社クボタ Work vehicle
EP1876303A1 (en) * 2006-07-05 2008-01-09 Kobleco Construction Machinery Co., Ltd. Construction machine
JP2008031817A (en) * 2006-07-05 2008-02-14 Kobelco Contstruction Machinery Ltd Construction machine
US7726435B2 (en) 2006-07-05 2010-06-01 Kobelco Construction Machinery Co., Ltd. Construction machine

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