JP2008247237A - Work vehicle - Google Patents

Work vehicle Download PDF

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Publication number
JP2008247237A
JP2008247237A JP2007091751A JP2007091751A JP2008247237A JP 2008247237 A JP2008247237 A JP 2008247237A JP 2007091751 A JP2007091751 A JP 2007091751A JP 2007091751 A JP2007091751 A JP 2007091751A JP 2008247237 A JP2008247237 A JP 2008247237A
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pedal
backward
pedals
foot
reverse
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JP4935464B2 (en
JP2008247237A5 (en
Inventor
Tomoo Kiyokawa
智男 清川
Takeshi Tamada
武史 玉田
Hirofumi Tsuchiya
裕文 土谷
Mitsuo Toyokawa
光夫 豊川
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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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Priority to JP2007091751A priority Critical patent/JP4935464B2/en
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Publication of JP2008247237A5 publication Critical patent/JP2008247237A5/ja
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  • Arrangement And Driving Of Transmission Devices (AREA)
  • Mechanical Control Devices (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem wherein it is necessary to greatly move a foot in a lateral direction when stepping on another pedal, because a conventional forward traveling pedal and a backward traveling pedal are arranged side by side in a lateral direction and disposed in a parallel with each other. <P>SOLUTION: The work vehicle comprises the forward traveling pedal carrying out forward traveling of a machine body by stepping-on operation on one side, and the backward traveling pedal 16 carrying out backward traveling of the machine body by stepping-on operation on the other side. These forward/backward pedals 15, 16 are arranged side by side in a lateral direction, and displaced each other in a fore-and-aft direction. The right and left forward/backward traveling pedals 16, 15 are disposed with an arc track K zone drawing about a part Q near a heel of the foot. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は、前後進操作装置を備えた作業車両に関するものである。   The present invention relates to a work vehicle including a forward / reverse operation device.

特許文献１には、前進ペダルと後進ペダルの踏込み操作によって油圧式無段変速装置（ＨＳＴ）を制御して機体の前進及び後進を司る技術が開示されている。
特開２００６−１８０７３４号公報 Patent Document 1 discloses a technique for controlling the hydraulic continuously variable transmission (HST) by depressing a forward pedal and a reverse pedal to control the forward and backward movement of the airframe.
JP 2006-180734 A

従来の前進ペダルと後進ペダルは左右に並設され、しかも、左右平行状に配置されているため、踏み替え時には足を左右に大きく移動させる必要があり、操作性が悪く誤操作を招く問題があった。   Since the conventional forward pedal and reverse pedal are arranged side by side in parallel and are arranged in parallel in the left and right direction, it is necessary to move the foot to the left and right when changing the footstep, resulting in poor operability and erroneous operation. It was.

この発明は、上記課題を解決すべく次のような技術的手段を講じた。
すなわち、請求項１記載の本発明は、一方側の踏込み操作で機体の前進走行を行なう前進ペダル（１５）と、他方側の踏込み操作で機体の後進走行を行なう後進ペダル（１６）を備え、これら前・後進ペダル（１５），（１６）は、左右に並設すると共に、互いに前後に変位させて構成したことを特徴とする作業車両としたものである。 In order to solve the above problems, the present invention has taken the following technical means.
That is, the present invention described in claim 1 includes a forward pedal (15) for performing forward traveling of the aircraft by a stepping operation on one side, and a reverse pedal (16) for performing backward traveling of the aircraft by a stepping operation on the other side, These forward / reverse pedals (15) and (16) are arranged side by side and are displaced from each other in the front-rear direction.

前進ペダル（１５）を踏込み操作すると油圧式無段変速装置の制御によって機体は前進し、後進ペダル（１６）を踏込み操作すると機体は後進する。前進ペダル（１５）から後進ペダル（１６）へ、また、後進ペダル（１６）から前進ペダル（１５）への踏み替え時には、左右の前後進ペダル（１５），（１６）が前後に変位しているため、足全体を左右に大きく移動させる必要がなく、足のつま先側を左右に振り回すだけで可能となり、操作性が良く、誤操作も招くことがない。   When the forward pedal (15) is depressed, the aircraft moves forward under the control of the hydraulic continuously variable transmission, and when the backward pedal (16) is depressed, the aircraft moves backward. When changing from the forward pedal (15) to the reverse pedal (16) and from the reverse pedal (16) to the forward pedal (15), the left and right forward and backward pedals (15) and (16) are displaced forward and backward. Therefore, it is not necessary to move the entire foot to the left and right, and it is possible by simply swinging the toe side of the foot to the left and right.

請求項２記載の本発明は、前記左右の前後進ペダル（１５），（１６）は、足の踵付近（Ｑ）を中心として描く円弧軌跡（Ｋ）圏内に配置するように設けたことを特徴とする請求項１記載の作業車両としたものである。   The present invention according to claim 2 is characterized in that the left and right forward / reverse pedals (15), (16) are provided so as to be disposed within a circular arc locus (K) drawn around the vicinity of the heel of the foot (Q). The working vehicle according to claim 1, characterized in that it is a feature.

左右の前後進ペダル（１５），（１６）への踏込み切替時は、足の踵（Ｑ）を支点として左右に振り回すだけで、左右の前後進ペダルを確実に踏込み操作することができ、前後進の切り替えも素早く行え、操作性が向上する。   When switching to the left and right forward / backward pedals (15) and (16), the left and right forward / backward pedals can be reliably depressed by simply swinging left and right around the heel (Q) as a fulcrum. You can quickly change the hex and improve operability.

請求項１に記載の本発明によれば、左右の前後進ペダルが前後に変位しているため、左右のペダルを踏込み操作する時、従来のように足全体を左右に大きく移動させる必要がなく、足のつま先側を左右に振り回すだけで切り替えが可能となり、誤操作も招くことがなく、操作性が向上するものとなった。   According to the first aspect of the present invention, the left and right forward / backward pedals are displaced back and forth, so that when the left and right pedals are depressed, it is not necessary to move the entire foot to the left or right as in the prior art. Switching is possible simply by swinging the toe side of the foot to the left and right, and there is no misoperation, and operability is improved.

請求項２の本発明によれば、左右の前後進ペダルは、足の踵付近を中心として描く円弧軌跡圏内に配置するので、請求項１の発明効果を奏するものでありながら、左右の前後進ペダルへの踏込み切替時は、足の踵を支点として左右に振り回すだけで、左右の前後進ペダルを確実に踏込み操作することができ、前後進の切り替えも素早く行い得て操作性がより向上するものとなった。   According to the second aspect of the present invention, since the left and right forward / reverse pedals are arranged within the arc locus within the vicinity of the heel of the foot, the left / right forward / backward movement can be achieved while achieving the effects of the first aspect. When switching to the pedal, the left and right forward / backward pedals can be reliably depressed by simply swinging them to the left and right using the foot of the foot as a fulcrum. It became a thing.

この発明の実施例を図面に基づき説明する。
図１は、作業車両の一例としてトラクタを示すものであり、このトラクタＴは、車体前部のボンネット１内部にエンジンＥを搭載し、このエンジンＥの回転動力を油圧式無段変速装置（ＨＳＴ）１０を介してミッションケ−ス２内の変速装置３に伝え、この変速装置３で減速された回転動力を前輪４及び後輪５とに伝えるようにしている。エンジンＥの後方に前輪４，４を操舵するステアリングハンドル６が装備され、更に、その後方には運転席７が設置されている。ミッションケ−ス２の後上部には油圧シリンダケース８が搭載され、このシリンダケース８の左右両側部には、油圧昇降機構の一部を構成するリフトアーム９，９が回動自在に枢支されている。シリンダケース８内に収容されている作業機昇降用油圧シリンダに作動油を供給するとリフトアーム９，９が上方に回動し、排出するとリフトアーム９，９は下降するようになっている。 An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a tractor as an example of a work vehicle. The tractor T has an engine E mounted in a hood 1 at the front of a vehicle body, and the rotational power of the engine E is supplied to a hydraulic continuously variable transmission (HST). ) Is transmitted to the transmission 3 in the mission case 2 via 10, and the rotational power decelerated by the transmission 3 is transmitted to the front wheels 4 and the rear wheels 5. A steering handle 6 for steering the front wheels 4 and 4 is provided behind the engine E, and a driver's seat 7 is installed behind the steering handle 6. A hydraulic cylinder case 8 is mounted on the rear upper part of the mission case 2, and lift arms 9 and 9 constituting a part of the hydraulic lifting mechanism are pivotally supported on both left and right sides of the cylinder case 8. Has been. When hydraulic fluid is supplied to the hydraulic cylinder for raising / lowering the work implement accommodated in the cylinder case 8, the lift arms 9, 9 are rotated upward, and when discharged, the lift arms 9, 9 are lowered.

車体後部にはトップリンクやロワリンク１１等からなる３点リンク機構を介してロータリ耕耘装置などの作業機を装着するようになっている。また、車体の腹部には芝草を刈り取るミッドモーア１２を着脱自在に装着して、前記ミッションケース２内の伝動機構を介して動力伝達する構成としている。操作ボックス１３の右側におけるステップフロア１４上には、左側の踏込み操作で機体の前進走行を司る前進ペダル１５と、右側の踏込み操作で機体の後進走行を司る後進ペダル１６を備え、左側の前進ペダル１５及び右側の後進ペダル１６の踏込み操作によってＨＳＴ１０のトラニオン軸１７を回動制御して中立位置から前進増速位置と後進増速位置とに無段変速するように連動構成している。なお、ペダルにポテンショメータを設け、サーボ式ＨＳＴに連動させて制御する方式をとることもできる。   A working machine such as a rotary tiller is mounted on the rear part of the vehicle body via a three-point link mechanism including a top link, a lower link 11 and the like. In addition, a mid mower 12 for mowing turf grass is detachably attached to the abdomen of the vehicle body so that power is transmitted through a transmission mechanism in the transmission case 2. On the step floor 14 on the right side of the operation box 13, there are provided a forward pedal 15 that controls the forward movement of the aircraft by the left stepping operation, and a reverse pedal 16 that controls the backward movement of the aircraft by the right stepping operation. The trunnion shaft 17 of the HST 10 is rotationally controlled by depressing the reverse pedal 16 on the right side 15 and the right side so as to be continuously variable from the neutral position to the forward acceleration position and the reverse acceleration position. Note that a potentiometer may be provided on the pedal, and a method of controlling in conjunction with the servo type HST may be employed.

そして、これらの前後進ペダル１５，１６は、左右に並設してあると共に、足踏み頻度の高い前進ペダル１５を（足の位置が正面となるよう）前位とし、後進ペダル１６はそれよりも後位となるよう所定の角度に後退変位させた配置構成としている。また、この両ペダルの配置関係は、踏込み操作する足（右足）Ｆの踵部Ｑを中心として描く半径Ｒの円弧軌跡（Ｋ）圏内に配置しておくと、足の踵を支点として左右に所定角度振り回すだけで、左右の前後進ペダルの切替踏込操作を確実に行うことができる。   These forward / reverse pedals 15 and 16 are arranged side by side, and the forward pedal 15 having a high stepping frequency is set to the front position (so that the position of the foot is in front), and the reverse pedal 16 is more than that. The arrangement is configured to be displaced backward by a predetermined angle so as to be in the rear position. Further, the arrangement relationship between the two pedals is such that if the pedals are arranged within an arc locus (K) having a radius R centered on the heel portion Q of the foot (right foot) F to be depressed, the foot heel is used as a fulcrum. It is possible to reliably perform the switching operation of the left and right forward / backward pedals only by swinging the predetermined angle.

前進ペダル１５は、左右横方向に平行な軸１８ａ回りに回動自在に軸支する構成であり、後進ペダル１６は、進行方向に対し左右斜め後方に向けて傾斜する軸１８ｂ回りに回動自在に軸支してある。このペダル軸１８ａ，１８ｂは、図２のように一体軸としてもよく、また、別軸に構成することもでき、ミッションケース２又はミッションケースに組付けられるベースプレートに軸受保持する。   The forward pedal 15 is pivotally supported about a shaft 18a parallel to the left and right lateral directions, and the reverse pedal 16 is rotatable about a shaft 18b inclined obliquely rearward to the left and right with respect to the traveling direction. Is pivotally supported. The pedal shafts 18a and 18b may be integral shafts as shown in FIG. 2, or may be configured as separate shafts, and are supported by bearings on the transmission case 2 or a base plate assembled to the transmission case.

図２に示すペダル軸１８ａ，１８ｂは、元々は一本の軸であり、曲げ部１８ｃを構成して前後進ペダル１５，１６の向きを変更している構成である。
トラクタのクラッチペダルには、トラクタを長期保管する場合、クラッチの張り付き防止のため、クラッチを切った状態に保つカットオフ機構が設けられている。通常は、クラッチペダル２１を踏み込んでクラッチ切り状態とし、Ｊ字型の係止フック２２にて係止固定するだけの構成であるため、操作が非常にしづらいものであった。本例では、図４に示すように、係止フック２２を係脱操作する操作アーム２３を運転位置からオペレータの手の届く操作可能範囲まで延出させて、オペレータが容易にカットオフできるように構成している。また、図５に示すように、運転席７近くに設けられた操作レバー２４の操作でワイヤー２５を引き、カットオフアーム２６の作動により、クラッチペダル２１を強制的にクラッチ「切」方向に押し下げてロックする構成としてもよく、操作ロッド２７を踏み込んでリンク２８、ワイヤー２５ａ、カットオフアーム２６を介してクラッチペダル２１を上記同様にクラッチ「切」方向に押し下げてロックする手段を採用してもよい。 The pedal shafts 18a and 18b shown in FIG. 2 are originally a single shaft, and are configured to change the direction of the forward / reverse pedals 15 and 16 by forming a bending portion 18c.
The tractor clutch pedal is provided with a cut-off mechanism that keeps the clutch disengaged to prevent the clutch from sticking when the tractor is stored for a long period of time. Normally, the clutch pedal 21 is depressed to make the clutch disengaged, and is simply locked and fixed by the J-shaped locking hook 22, so that the operation is very difficult. In this example, as shown in FIG. 4, the operating arm 23 for engaging and disengaging the locking hook 22 is extended from the operating position to the operable range reachable by the operator so that the operator can easily cut off. It is composed. Further, as shown in FIG. 5, the wire 25 is pulled by the operation of the operation lever 24 provided near the driver's seat 7, and the clutch pedal 21 is forcibly pushed down in the clutch “off” direction by the operation of the cut-off arm 26. It is also possible to adopt a structure in which the operation rod 27 is depressed and the clutch pedal 21 is pushed down in the clutch “disengagement” direction via the link 28, the wire 25a and the cut-off arm 26 in the same manner as described above. Good.

図６に示す実施例は、ミッションケース２をフロントミッションケース２Ｆとリヤミッションケース２Ｒの二つに分割構成し、リヤミッションケース２Ｒは、フロントミッションケース２ＦがＨＳＴ１０付きであっても、非ＨＳＴ付きであっても共用できる構成とし、部品点数の低減化を図っている。   In the embodiment shown in FIG. 6, the mission case 2 is divided into two parts, a front mission case 2F and a rear mission case 2R. The rear mission case 2R has a non-HST even if the front mission case 2F has an HST10. However, the configuration can be shared, and the number of parts is reduced.

また、図７に示す実施例は、ミッションケース２のクラッチハウジング部２ａの後方上部に空間を設け、この空間内にウオームギヤ３０，３１を組み入れ、ステアリング軸２９からこのウオームギヤ３０，３１を介して前方の操舵機構に至る連動軸３２を駆動し、ステアリングハンドル６の操作で左右の前輪４を操向操舵するよう連動連結した構成としている。   In the embodiment shown in FIG. 7, a space is provided in the rear upper part of the clutch housing portion 2a of the transmission case 2, and worm gears 30 and 31 are incorporated in the space, and the steering shaft 29 passes through the worm gears 30 and 31 to the front. The interlocking shaft 32 that reaches the steering mechanism is driven, and the left and right front wheels 4 are steered and steered by the operation of the steering handle 6.

前記油圧シリンダケース８には、副変速レバー３４を装着する支軸３５用の軸穴３６が設けられている。この軸穴３６は、ケース８のバルブのスプール部分を副変速レバーの支点として利用できるように該ケースと一体成型された構成になっている（図８、図９参照）。   The hydraulic cylinder case 8 is provided with a shaft hole 36 for a support shaft 35 to which the auxiliary transmission lever 34 is attached. The shaft hole 36 is configured to be integrally formed with the case so that the spool portion of the valve of the case 8 can be used as a fulcrum of the auxiliary transmission lever (see FIGS. 8 and 9).

ミッドモーア１２を駆動するミッドＰＴＯ出力軸３８を備えたミッドＰＴＯ伝動ケース３９とミッションケース２との間に、ミッドＰＴＯ用中間伝動ケース４０を介装してミッドモーアの最低地上高を高くし、伝動効率の向上並びに低刈り作業の容易化を図るようにしている。   A mid PTO intermediate transmission case 40 is interposed between the mid PTO transmission case 39 having the mid PTO output shaft 38 for driving the mid moor 12 and the transmission case 2 to increase the minimum ground clearance of the mid moor, thereby improving the transmission efficiency. Improvement and ease of low mowing work.

ミッドモーア装着時、ミッドＰＴＯ出力軸がミッションケースに近いと、低刈り時にモアデッキが下がっている状態では、ユニバーサルジョイントの折れ角が大きくなり、短時間で破損を招く問題がある。ここで、上記のようにミッドＰＴＯ伝動ケースが縦方向に長くなることから、アグリ仕様での最低地上高を高くでき、芝刈り仕様でのミッドモア作業が容易にできる。   When the mid mower is mounted, if the mid PTO output shaft is close to the transmission case, the bending angle of the universal joint increases when the mower deck is lowered during low mowing, causing damage in a short time. Here, since the mid PTO transmission case is elongated in the vertical direction as described above, the minimum ground clearance in the agri specification can be increased, and the midmore work in the lawn mowing specification can be facilitated.

また、前記ミッドＰＴＯ中間伝動ケース４０において、ギヤ４１の軸４２を受けるためのリーマ加工をケース外側から行い、ギヤ組付後、メクラ蓋４３で蓋をするようにする。これによると、ケースをコンパクトに構成できて、コストトダウンとなる。   Further, in the mid PTO intermediate transmission case 40, the reamer processing for receiving the shaft 42 of the gear 41 is performed from the outside of the case, and the gear cover 43 is covered after the gear is assembled. According to this, a case can be comprised compactly and it becomes cost-saving.

更に、インプット軸４４上にあるミッドＰＴＯ入力ギヤ４５を、組み入れ、取り外しが容易にできる程度の隙間（Ｌ）を、インプット軸４４とドライブピニオン軸４６との間に確保（図１０参照）しておくことで、分解、組立の容易化を図ることができる。   Further, a gap (L) is secured between the input shaft 44 and the drive pinion shaft 46 (see FIG. 10) so that the mid PTO input gear 45 on the input shaft 44 can be easily incorporated and removed. Therefore, disassembly and assembly can be facilitated.

図１１に示す実施例は、通常、使用頻度の低い４ＷＤ（４駆）レバーとミッドＰＴＯレバー１本のレバーに集約し、オペレータスペースの有効活用を図るようにしたものである。操作レバー（４ＷＤレバー及びミッドＰＴＯレバー）５０の操作で、揺動アーム５１、ロッド５２、４ＷＤアーム５３ａを経て作動する４ＷＤ（ＯＮ・ＯＦＦ）切替軸５４と、４ＷＤアーム５３ｂ、ロッド５５、ミッドアーム５６を経て作動するミッドＰＴＯ（ＯＮ・ＯＦＦ）切替軸５７を連動してＯＮ・ＯＦＦ制御する構成としている。つまり、４ＷＤ→ＯＮでミッドＰＴＯ→ＯＦＦのパターンと、４ＷＤ→ＯＮでミッドＰＴＯ→ＯＮのパターンと、４ＷＤ→ＯＦＦでミッドＰＴＯ→ＯＮのパターンと、４ＷＤ→ＯＦＦでミッドＰＴＯ→ＯＦＦのパターンとの４パターンのＯＮ・ＯＦＦ制御が選択できるようになっている。   The embodiment shown in FIG. 11 is normally integrated into a 4WD (four-wheel drive) lever and a single mid PTO lever, which are less frequently used, so as to effectively use the operator space. By operating the operation lever (4WD lever and mid PTO lever) 50, a 4WD (ON / OFF) switching shaft 54 that operates via a swing arm 51, a rod 52, and a 4WD arm 53a, a 4WD arm 53b, a rod 55, and a midarm The mid-PTO (ON / OFF) switching shaft 57 that operates through 56 is configured to perform ON / OFF control in conjunction with each other. That is, 4WD → ON is a mid PTO → OFF pattern, 4WD → ON is a mid PTO → ON pattern, 4WD → OFF is a mid PTO → ON pattern, and 4WD → OFF is a mid PTO → OFF pattern. Four patterns of ON / OFF control can be selected.

車体後部に突設するグランドＰＴＯ軸６０のＯＮ・ＯＦＦ制御が運転席近くに設置されたＰＴＯクラッチレバー６１の操作で切り替えが可能な構成のものにおいて、ＰＴＯクラッチレバー６１を回動操作すると、クラッチレバー６１側のアーム６２、リンク６３、ＰＴＯ側アーム６４を介してＰＴＯ切替軸６５が回動し、グランドＰＴＯ軸６０がＯＮ・ＯＦＦに切り替えられるが、図１１に示す実施例では、ＰＴＯ側アーム６４を上方に延長してグリップ６６を設けてレバー化し、機体後方側からでも操作ができるように構成している。   In a configuration in which ON / OFF control of the ground PTO shaft 60 protruding from the rear of the vehicle body can be switched by operating the PTO clutch lever 61 installed near the driver's seat, when the PTO clutch lever 61 is rotated, the clutch The PTO switching shaft 65 is rotated via the arm 62 on the lever 61 side, the link 63, and the PTO side arm 64, and the ground PTO shaft 60 is switched ON / OFF. In the embodiment shown in FIG. 64 is extended upward and a grip 66 is provided to form a lever so that it can be operated even from the rear side of the aircraft.

なお、本機完成後に後から取り付けるＯＰＴの４ＷＤ、ミッドＰＴＯ等のレバーにおいて、上記図１１に示すように、４ＷＤアーム５３ａを押し引き式プレート６７で押し引き操作すべく後付け可能に連動構成し、フェンダーを取り外すことなく簡単に取り付けできる構成としている。   As shown in FIG. 11, the OPT 4WD lever, mid PTO lever, etc., to be mounted later after the completion of the machine, is configured to be interlocked so that the 4WD arm 53a can be retrofitted with a push-pull plate 67. It is configured to be easily installed without removing the fender.

トラクタの側面図Side view of tractor 前後進ペダルの配置平面図Front / rear pedal placement plan 同上要部の側面図Side view of the main part クラッチペダルを備えたトラクタ要部の側面図Side view of main part of tractor with clutch pedal クラッチペダルのロック機構を備えたトラクタ要部の側面図Side view of the main part of the tractor with a clutch pedal locking mechanism ミッションケースの側断面図Side view of the mission case トラクタの一部の側面図Side view of part of tractor 油圧シリンダケースの平面図Top view of hydraulic cylinder case 同上一部の破断正面図Partial fracture front view トラクタミッション部要部の切断側面図Cut side view of the main part of the tractor mission section 各種操作連動機構を示すトラクタ要部の側面図Side view of the main part of the tractor showing various operation interlocking mechanisms

符号の説明Explanation of symbols

１０ ＨＳＴ（油圧式無段変速装置）
１５ 前進ペダル
１６ 後進ペダル
１７ トラニオン軸
１８ ペダル軸
Ｑ 踵中心部
Ｋ 円弧軌跡圏 10 HST (hydraulic continuously variable transmission)
15 Forward pedal 16 Reverse pedal 17 Trunnion shaft 18 Pedal shaft Q 踵 Center K Arc path

Claims (2)

一方側の踏込み操作で機体の前進走行を行なう前進ペダル（１５）と、他方側の踏込み操作で機体の後進走行を行なう後進ペダル（１６）を備え、これら前後進ペダル（１５），（１６）は、左右に並設すると共に、互いに前後に変位させて構成したことを特徴とする作業車両。   A forward pedal (15) for performing forward travel of the aircraft by a stepping operation on one side and a reverse pedal (16) for performing reverse travel of the aircraft by a stepping operation on the other side are provided, and these forward and backward pedals (15), (16) Is a work vehicle that is arranged side by side and displaced in the front-rear direction. 前記左右の前後進ペダル（１５），（１６）は、足の踵付近（Ｑ）を中心として描く円弧軌跡（Ｋ）圏内に配置するように設けたことを特徴とする請求項１記載の作業車両。   2. The work according to claim 1, wherein the left and right forward / reverse pedals (15) and (16) are provided so as to be disposed within an arcuate locus (K) drawn around a footpad (Q). vehicle.
JP2007091751A 2007-03-30 2007-03-30 Tractor Expired - Fee Related JP4935464B2 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616538A (en) * 1979-07-18 1981-02-17 Mitsuhiro Harada Preparation of molded article coated with synthetic resin
JPH02299932A (en) * 1989-05-16 1990-12-12 Kubota Corp Speed changing operation construction of work vehicle
JPH03168816A (en) * 1989-11-29 1991-07-22 Iseki & Co Ltd Traveling pedal for moving vehicle
JPH03178850A (en) * 1989-09-29 1991-08-02 Masuyuki Naruse Automobile driving operation system
JP2004330900A (en) * 2003-05-08 2004-11-25 Yanmar Co Ltd Operating device of working vehicle
JP2007030623A (en) * 2005-07-25 2007-02-08 Yanmar Co Ltd Working vehicle

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5616538A (en) * 1979-07-18 1981-02-17 Mitsuhiro Harada Preparation of molded article coated with synthetic resin
JPH02299932A (en) * 1989-05-16 1990-12-12 Kubota Corp Speed changing operation construction of work vehicle
JPH03178850A (en) * 1989-09-29 1991-08-02 Masuyuki Naruse Automobile driving operation system
JPH03168816A (en) * 1989-11-29 1991-07-22 Iseki & Co Ltd Traveling pedal for moving vehicle
JP2004330900A (en) * 2003-05-08 2004-11-25 Yanmar Co Ltd Operating device of working vehicle
JP2007030623A (en) * 2005-07-25 2007-02-08 Yanmar Co Ltd Working vehicle

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