JP3213166B2 - Operation unit structure of work vehicle - Google Patents
Operation unit structure of work vehicleInfo
- Publication number
- JP3213166B2 JP3213166B2 JP12664794A JP12664794A JP3213166B2 JP 3213166 B2 JP3213166 B2 JP 3213166B2 JP 12664794 A JP12664794 A JP 12664794A JP 12664794 A JP12664794 A JP 12664794A JP 3213166 B2 JP3213166 B2 JP 3213166B2
- Authority
- JP
- Japan
- Prior art keywords
- shift
- arms
- arm
- turning
- speed change
- 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.)
- Expired - Lifetime
Links
Landscapes
- Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、左右独立の走行駆動機
構を備えた作業車、例えば、コンバイン、トラクタ等の
農業機械、運搬車、建設機械の操作部構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a working vehicle equipped with a left and right independent driving mechanism, for example, an agricultural machine such as a combine, a tractor, a transport vehicle, and a construction machine.
【０００２】[0002]
【従来の技術】従来、左右独立の走行駆動機構を備えた
作業車として、例えば、コンバインがあり、同コンバイ
ンでは左右走行部をそれぞれ静油圧駆動機構（以下「Ｈ
ＳＴ」と称する）により走行駆動可能とし、各ＨＳＴの
トラニオンレバーに、左右独立して設けた２本の操作レ
バーを連動連結して、同操作レバーにより操向操作が行
えるようにしている。2. Description of the Related Art Conventionally, there is a combine vehicle, for example, as a work vehicle provided with a left and right independent traveling drive mechanism.
ST "), two operation levers independently provided on the left and right are linked to the trunnion lever of each HST, and the steering operation can be performed by the operation levers.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記したコ
ンバインのように、左右のＨＳＴを、独立した左右の操
作レバーにて操作する場合は、機体の走行速度を調整す
る変速操作と、機体の操向を行う旋回操作を同一レバー
にて操作しなければならないために、その操作性が悪
く、運転操作を円滑に行うことができないという問題が
あった。However, when the left and right HSTs are operated by independent left and right operation levers as in the above-described combine, a shift operation for adjusting the traveling speed of the aircraft and an operation of the aircraft are performed. Since the turning operation to perform the direction must be operated by the same lever, the operability is poor, and there is a problem that the driving operation cannot be performed smoothly.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明では、操
作台に設けたアーム支軸に、一対の変速アームの基端を
同軸的に枢支して、各変速アームを旋回操作具の旋回操
作に連動して回動可能とし、各変速アームの先端には、
それぞれ変速用揺動体の中途部を枢支して、各変速用揺
動体を変速操作具の変速操作に連動して揺動可能とし、
しかも、各変速用揺動体は、ＨＳＴ増減速機構に連動連
結すると共に、各変速アームの回動作動と各変速用揺動
体の揺動作動にＨＳＴ増減速機構の増減速作動を連動さ
せたことを特徴とする作業車の操作部構造を提供せんと
するものである。Accordingly, in the present invention, the base ends of a pair of shift arms are coaxially pivoted on an arm support shaft provided on an operation table, and each shift arm is turned by a turning operation tool. It can be rotated in conjunction with the operation, and at the tip of each shifting arm,
Each of the shifting rockers is pivotally supported at an intermediate portion, and each of the shifting rockers can be rocked in conjunction with a shift operation of a shift operating tool.
Moreover, each of the speed change rockers is interlocked with the HST acceleration / deceleration mechanism, and the rotation operation of each speed change arm and the rocking motion of each speed change rocker are linked to the acceleration / deceleration operation of the HST speed increase / decrease mechanism. It is intended to provide an operation section structure of a work vehicle characterized by the following.
【０００５】[0005]
【作用】機体を前進走行させる際に、変速操作具を前進
側に変速操作すると、一対の変速用揺動体が揺動して、
各変速用揺動体に連動連結したＨＳＴ増減速機構がそれ
ぞれ増速作動して、走行装置の左右側走行部を前進作動
させることができる。When the shift operation tool is shifted forward, when the body is moved forward, the pair of shift rockers swings,
The HST accelerating and decelerating mechanisms operatively linked to each of the speed-change oscillating members are each operated to increase the speed, so that the left and right traveling portions of the traveling device can be moved forward.
【０００６】そして、かかる前進走行状態において、旋
回操作具を、例えば、右旋回操作すると、それに連動し
て一方の変速アームが回動し、同変速アームの回動作動
に連動してＨＳＴ増減速機構が中立側に作動し、右側の
走行部を減速あるいは停止作動させるために、機体を右
旋回させることができる。In this forward running state, when the turning operation tool is turned to the right, for example, one of the transmission arms is rotated in conjunction therewith, and the HST is increased or decreased in conjunction with the rotation of the transmission arm. The speed mechanism operates to the neutral side, and the aircraft can be turned right to decelerate or stop the right traveling unit.
【０００７】さらに、かかる右旋回状態において、旋回
操作具をさらに右旋回方向に旋回操作すると、それに連
動して一方の変速アームがさらに回動し、同変速アーム
に連動連結しているＨＳＴ増減速機構を後進側に作動し
て、右側の走行部を後進作動させるために、機体を右側
に急旋回（スピンターン）させることができる。Further, in this right turning state, when the turning operation tool is further turned in the right turning direction, one of the shift arms is further turned in conjunction with the turning operation, and the HST connected to the same shift arm is further linked. In order to operate the acceleration / deceleration mechanism on the reverse side and operate the right traveling unit in the reverse direction, the aircraft can be turned sharply to the right (spin turn).
【０００８】また、左旋回、左急旋回についても、旋回
操作具を上記とは反対側に旋回操作することにより行な
うことができる。[0008] The left turn and the sharp left turn can also be performed by turning the turning operation tool to the opposite side.
【０００９】[0009]
【実施例】以下に、本発明の実施例を図面を参照しなが
ら説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１０】図１に示すＡは、本発明に係る操作部であ
り、同操作部Ａにより、作業車としてのコンバイン等の
左右走行部を走行駆動するＨＳＴ（図示せず）に設けた
油圧モータ制御用の左斜板54と右斜板84とを姿勢変更操
作して、機体を前・後進、左・右旋回、さらには、左・
右急旋回させることができるようにしている。Reference numeral A shown in FIG. 1 denotes an operation unit according to the present invention, and a hydraulic motor provided on an HST (not shown) for driving the left and right traveling units such as a combine as a working vehicle by the operation unit A. The attitude of the left swash plate 54 and the right swash plate 84 for control is changed, and the aircraft moves forward and backward, turns left and right, and further moves left and right.
You can make a sharp turn right.
【００１１】操作部Ａは、図１及び図２に示すように、
操作台10を矩形箱型に形成し、同操作台10の前後壁10a,
10b の下部間にアーム支軸11を軸線を前後方向に向けて
横架し、同アーム支軸11には前側より後側へ向けて順
次、旋回操作具としての旋回操作レバー12の下端と、左
右一対の変速アーム13,14 の下端とをそれぞれボス部12
a,13a,14a を介して左右揺動自在に同軸的に枢支し、旋
回操作レバー12の下部より直後方へ向けて突設した回動
作用突片15の先端部を左右変速アーム13,14 の中途部間
に配置している。The operation unit A is, as shown in FIGS.
The control console 10 is formed in a rectangular box shape, and front and rear walls 10a,
An arm support shaft 11 is horizontally laid between the lower portion of 10b with the axis line extending in the front-rear direction, and the arm support shaft 11 sequentially has a lower end of a turning operation lever 12 as a turning operation tool from a front side to a rear side, The lower ends of the pair of left and right shifting arms 13 and 14 are
a, 13a, and 14a, and coaxially pivotally supported to be able to swing left and right, and the tip end of a turning action projecting piece 15 protruding from the lower part of the turning operation lever 12 toward the rear side is attached to the left and right shifting arms 13, It is located between 14 midway sections.
【００１２】このようにして、旋回操作レバー12の旋回
操作、すなわち、左右幅方向への回動操作時に、回動側
に位置する変速アーム13,14 の中途部に回動作用突片15
の先端部が当接して、同変速アーム13,14 を同一回動方
向に回動させることができるようにしている。In this manner, when the turning operation lever 12 is turned, that is, when the turning operation is performed in the left-right width direction, the turning action projecting piece 15 is provided in the middle of the speed change arms 13 and 14 located on the turning side.
The transmission arm 13 and 14 can be rotated in the same rotation direction by contacting the leading ends of the gears.
【００１３】そして、回動作用突片15は、図１及び図３
に示すように、一定の左右幅を保持させる一方、左右変
速アーム13,14 の中途部間には引張スプリング16を介設
して、両変速アーム13,14 を引張スプリング16により引
張して、回動作用突片15の左右側端面に両変速アーム1
3,14 の中途部を当接させることにより、両変速アーム1
3,14 を中立位置に保持させることができるようにして
いる。13b,14b は、それぞれスプリング係止ピンであ
る。[0013] The pivoting operation piece 15 is shown in Figs.
As shown in the figure, while maintaining a constant left and right width, a tension spring 16 is provided between the middle portions of the left and right speed change arms 13 and 14, and both speed change arms 13 and 14 are pulled by the tension spring 16, Both shifting arms 1 are provided on the left and right end surfaces of
By contacting the middle of 3,14, both shifting arms 1
3,14 can be held in the neutral position. 13b and 14b are spring locking pins, respectively.
【００１４】また、操作台10の後壁10b の下部より、図
１〜図３に示すように、中立保持用突片21を前方へ向け
て伸延させて、同中立保持用突片21を左右変速アーム1
3,14の下部間に挿入して配置し、同中立保持用突片21の
左右側端面に、引張スプリング16により引張された各変
速アーム13,14 の下部を当接させることにより、各変速
アーム13,14 を個別に中立位置に保持させることができ
るようにしている。As shown in FIGS. 1 to 3, the neutral holding projection 21 is extended forward from the lower portion of the rear wall 10b of the operation console 10, and the neutral holding projection 21 is moved right and left. Shift arm 1
The lower gears 13 and 14 pulled by the tension springs 16 abut against the left and right end faces of the neutral holding projection 21 so that the lower gears 3 and 14 are disposed. The arms 13 and 14 can be individually held at the neutral position.
【００１５】左右変速アーム13,14 の上端には、それぞ
れ変速用揺動体17,18 の中途部を枢支ピン41,71 を介し
て枢支し、各変速用揺動体17,18 の外側端部に、操作台
10の右側壁10d にレバー支持軸22を介して取付けた変速
操作具としての主変速レバー35を連結ワイヤ19,20 を介
して連結して、同主変速レバー35の変速操作に連動して
各変速用揺動体17,18 の左右側端側を上下揺動可能と
し、しかも、各変速用揺動体17,18 は、ＨＳＴ増減機構
M1,M2 に連動連結すると共に、各変速アーム13,14 の左
右回動作動と各変速用揺動体17,18 の上下揺動作動にＨ
ＳＴ増減速機構M1,M 2 の増減速作動を連動させてい
る。19a,20a は、それぞれワイヤ受け、23は主変速レバ
ーガイド体である。At the upper ends of the left and right shifting arms 13 and 14, the middle portions of the shifting rockers 17 and 18 are pivotally supported via pivoting pins 41 and 71, respectively. Control panel
A main shift lever 35 as a shift operating tool attached to the right side wall 10d of the 10 via the lever support shaft 22 is connected via connecting wires 19 and 20, and each of the main shift levers 35 is interlocked with the shift operation of the main shift lever 35. The left and right ends of the shift rockers 17 and 18 can be vertically rocked, and each of the shift rockers 17 and 18 is provided with an HST increasing / decreasing mechanism.
In addition to being linked to M1 and M2, H is used for the left and right rotation operation of each shift arm 13 and 14 and the vertical swing operation of each shift rocking body 17 and 18.
The acceleration / deceleration operation of the ST acceleration / deceleration mechanisms M1 and M2 is linked. Reference numerals 19a and 20a denote wire receivers, and reference numeral 23 denotes a main transmission lever guide.
【００１６】左右変速用揺動体17,18 は、図２及び図３
に示すように、アーム支軸11を中心とする前記枢支ピン
41,71 の回動軌跡に沿わせて左右幅方向に円弧状に伸延
させると共に、後面が開口した断面コ字状に形成してお
り、左右変速アーム13,14 の上端に左右ボス部40,70 を
取付け、各ボス部40,70 に軸線を前後方向に向けた枢支
ピン41,71 を回転自在に取付け、枢支ピン41,71 の後端
に左右変速用揺動体17,18 の前壁中途部を固設してい
る。The left and right shifting rockers 17, 18 are shown in FIGS.
As shown in the figure, the pivot pin about the arm spindle 11
Each of the right and left transmission arms 13 and 14 has a left and right boss portion 40, 70, and pivotally attached to each boss 40, 70 with pivot pins 41, 71 whose axes are directed in the front-rear direction. The middle part of the wall is fixed.
【００１７】ＨＳＴ増減速機構M1,M2 は、図１及び図２
に示すように、操作部Ａの後壁10bの左右側部に左右ボ
ス部50,80 を取付け、各ボス部50,80 に軸線を前後方向
に向けたアーム枢支ピン51,81 を回転自在に取付け、各
アーム枢支ピン51,81 の前端に、後壁10b の内方におい
て、左右幅方向に伸延する左右回転子支持アーム48,78
の基端を取付けると共に、各アーム48,78 の先端に左右
回転子47,77 をそれぞれ支軸49,79 を介して取付け、各
回転子47,77 を前記変速用揺動体17,18 に回転自在かつ
各変速用揺動体17,18 に沿って左右幅方向に摺動自在に
嵌合する一方、各アーム枢支ピン51,81 の後端に、後壁
10b の外方において、左右幅方向に伸延する左右斜板作
動用アーム52,82 の基端を固定し、各斜板作動用アーム
52,82 の先端に油圧モータを制御する左右斜板54,84 を
左右連結ワイヤ55,85 を介して連動連結して構成してい
る。55a,85a はそれぞれワイヤ受け、58,88 はワイヤ連
結ボルトである。The HST acceleration / deceleration mechanisms M1 and M2 are shown in FIGS.
As shown in the figure, left and right bosses 50 and 80 are attached to the left and right sides of the rear wall 10b of the operation unit A, and arm pivot pins 51 and 81 with the axis line directed in the front-rear direction on each boss 50 and 80 are rotatable. And left and right rotor support arms 48, 78 extending in the left and right width direction inside the rear wall 10b at the front ends of the arm pivot pins 51, 81.
And the left and right rotators 47, 77 are attached to the distal ends of the arms 48, 78 via support shafts 49, 79, respectively, and the rotators 47, 77 are rotated to the shifting rockers 17, 18, respectively. It is freely and slidably fitted in the left and right width direction along each of the speed change rockers 17 and 18, and the rear wall of each arm pivot pin 51 and 81 is attached to the rear wall.
At the outer side of 10b, fix the base ends of the left and right swash plate operating arms 52 and 82 extending in the left and right width direction, and fix each swash plate operating arm.
Left and right swash plates 54 and 84 for controlling the hydraulic motor are connected to the leading ends of 52 and 82 via left and right connecting wires 55 and 85 in an interlocking manner. 55a and 85a are wire receivers, and 58 and 88 are wire connecting bolts.
【００１８】本発明の実施例は、上記のように構成して
いるものであり、以下に図３〜図７を参照しながら操作
作動形態について説明する。The embodiment of the present invention is configured as described above, and the operation and operation mode will be described below with reference to FIGS.
【００１９】まず、主変速レバー35を中立状態にする
と共に、旋回操作レバー12を中立状態にしている場合に
は、図３及び図４に示すように、左右変速用揺動体17,1
8、左右回転支支持アーム48,78、及び左右斜板作動用ア
ーム52,82はそれぞれ中立姿勢を採っている。First, when the main shift lever 35 is in the neutral state and the turning operation lever 12 is in the neutral state, as shown in FIG. 3 and FIG.
8. The left and right rotation support arms 48 and 78 and the left and right swash plate operating arms 52 and 82 each have a neutral posture.
【００２０】かかる中立状態より、主変速レバー35を
前進側変速位置に変速操作すると、連結ワイヤ19,20を
介して左右変速用揺動体17,18の各外側端部がそれぞれ
枢支ピン41,71を中心に上方へ押し上げられる方向に回
動される。When the main shift lever 35 is shifted to the forward shift position from the neutral state, the outer ends of the left and right shift rockers 17, 18 are connected to the pivot pins 41, via the connecting wires 19, 20, respectively. It is rotated in the direction in which it is pushed upward around 71.
【００２１】すなわち、図４及び図５に示すように、左
変速用揺動体17は枢支ピン41を中心に時計廻りに回動さ
れる一方、右変速用揺動体18は枢支ピン71を中心に反時
計廻りに回動される。That is, as shown in FIGS. 4 and 5, the rocker 17 for the left shift is rotated clockwise about the pivot pin 41, while the rocker 18 for the right gear shifts the pivot pin 71. Rotated counterclockwise around the center.
【００２２】そのため、左右変速用揺動体17,18の各外
側端部にそれぞれ嵌合されている左右回転子47,77を介
して左右回転子支持アーム48,78が、図２に示す操作台1
0の後壁10aに左右ボス部50,80を介して回動自在に取付
けられたアーム枢支ピン51,81を中心に、上方へ押し上
げられる方向に回動される一方、各アーム枢支ピン5 1,
81を介して左右回転支支持アーム48,78と一体的に取付
けられた左右斜板作動用アーム52,82が、各アーム枢支
ピン51,81を中心に下方へ押し下げられる方向に回動さ
れて、図４に示す「ハ」の字状の傾斜姿勢から図５に示
す逆「ハ」の字状の傾斜姿勢となる。For this reason, the left and right rotor support arms 48 and 78 are connected to the operation console shown in FIG. 2 through the left and right rotors 47 and 77 fitted respectively to the outer ends of the left and right shift rockers 17 and 18. 1
The arm pivot pins 51 and 81, which are rotatably attached to the rear wall 10a via left and right boss portions 50 and 80, are pivoted upward in the direction of being pushed upward. 5 1,
The left and right swash plate operating arms 52, 82, which are integrally attached to the left and right rotation support arms 48, 78 via 81, are rotated in the direction of being pushed down around the arm pivot pins 51, 81. 5 is changed from the "C" -shaped inclined posture shown in FIG. 4 to the inverted "C" -shaped inclined posture shown in FIG.
【００２３】その結果、左右斜板作動用アーム52,82の
先端部に連結した連結ワイヤ55,85を介して、油圧モー
タを制御する左右斜板54,84が前進用の同一傾斜姿勢と
なるように回動される。As a result, the left and right swash plates 54 and 84 for controlling the hydraulic motors have the same inclined posture for forward movement via the connecting wires 55 and 85 connected to the distal ends of the left and right swash plate operating arms 52 and 82. Is rotated as follows.
【００２４】従って、左右側の走行部（図示せず）は同
一速度にて前進走行作動して、機体は直進する。Accordingly, the right and left traveling parts (not shown) operate forward at the same speed, and the body travels straight.
【００２５】次に、上記した直進状態から、例えば、
図３に一点鎖線で示すように、旋回操作レバー12を右側
方へ回動操作すると、同旋回操作レバー12に突設した回
動作用突片15を介して右側の変速アーム14が右側方へ回
動され、同変速アーム14の上端に取付けた右変速用揺動
体18も右側方へ移動される。Next, from the straight traveling state described above, for example,
As shown by a dashed line in FIG. 3, when the turning operation lever 12 is turned to the right, the right shifting arm 14 is turned to the right via a turning action projecting piece 15 protruding from the turning operation lever 12. As a result, the right shift rocking body 18 attached to the upper end of the speed change arm 14 is also moved rightward.
【００２６】この際、右変速アーム14に取付けた右変速
用揺動体18は、前記した傾斜姿勢のまま右側方へ円弧軌
跡を描いて移動されることから、同右変速用揺動体18の
外側端部位置に嵌合されていた右回転子77は、図６に示
すように、右変速用揺動体18の略中央部位置に嵌合され
た状態となり、右回転子支持アーム78と右斜板作動用ア
ーム82が図４に示す中立姿勢に近づけられる。At this time, since the right-shift rocking body 18 attached to the right-shift arm 14 is moved along an arc trajectory to the right while maintaining the above-described inclined posture, the outer end of the right-shift rocker 18 is moved. As shown in FIG. 6, the right rotator 77 fitted to the right position is fitted at a substantially central position of the right speed swinging member 18, and the right rotator support arm 78 and the right swash plate are fitted. The operating arm 82 is brought closer to the neutral position shown in FIG.
【００２７】その結果、右斜板作動用アーム82の先端部
に連結された連結ワイヤ85が上方へ引張されて、同連結
ワイヤ85に連結された右斜板84が中立状態に近づけられ
る。As a result, the connecting wire 85 connected to the distal end of the right swash plate operating arm 82 is pulled upward, and the right swash plate 84 connected to the connecting wire 85 approaches a neutral state.
【００２８】従って、右側の走行部は減速あるいは停止
状態となる一方、左側の走行部は前進走行作動するた
め、機体は緩やかに右旋回する。Therefore, the right traveling unit is decelerated or stopped, while the left traveling unit operates forward, so that the body slowly turns right.
【００２９】続いて、上記した右旋回状態で、旋回操
作レバー12をさらに右旋回方向に回動操作すると、右変
速用揺動体18は、図７に示すように、前記した傾斜姿勢
のままさらに右側方へ円弧軌跡を描いて移動されること
から、同右変速用揺動体18の略中央部位置に嵌合されて
いた右回転子77は、右変速用揺動体18の内側端部位置に
嵌合された状態となり、右回転子支持アーム78と右斜板
作動用アーム82が、図７において、アーム枢支ピン81を
中心に一体的に時計廻りに回動されて、左高右低の傾斜
姿勢を採る。Subsequently, when the turning operation lever 12 is further turned in the right turning direction in the above-described right turning state, as shown in FIG. The right rotor 77, which has been fitted to the substantially central portion of the right-speed rocking body 18, is further moved to the right in a circular arc locus. 7, the right rotor supporting arm 78 and the right swash plate operating arm 82 are integrally rotated clockwise about the arm pivot pin 81 in FIG. Take a low tilt position.
【００３０】その結果、右斜板作動用アーム82の先端部
に連結された連結ワイヤ85がさらに上方へ引張されて、
同連結ワイヤ85に連結された右斜板84が後進用の傾斜姿
勢となるように回動される。As a result, the connecting wire 85 connected to the tip of the right swash plate operating arm 82 is further pulled upward,
The right swash plate 84 connected to the connection wire 85 is rotated so as to be in a backward inclined posture.
【００３１】従って、右側の走行部は後進走行作動する
一方、左側の走行部は前進走行作動するため、機体は右
側に急旋回（スピンターン）する。Therefore, the right traveling unit operates backward, while the left traveling unit operates forward, so that the aircraft makes a sharp turn to the right (spin turn).
【００３２】また、左旋回、左急旋回についても、旋回
操作レバー12を上記とは反対側である左側方へ回動操作
することにより行なうことができるものであり、旋回操
作レバー12の操作位置に関係なく、主変速レバー35を中
立位置に操作すれば機体は停止し、また、主変速レバー
35を後進位置に操作すれば、機体は後進、さらには、後
進左・右旋回、後進左・右急旋回させることができて、
各種の作業を能率的に行なうことができる。The left turn and the sharp left turn can also be performed by turning the turning operation lever 12 to the left side, which is the opposite side to the above, and the operating position of the turning operation lever 12 Regardless of operating the main shift lever 35 to the neutral position, the aircraft stops,
By operating the 35 to the reverse position, the aircraft can reverse, furthermore, reverse left and right turns, reverse left and right sharp turns,
Various operations can be performed efficiently.
【００３３】[0033]
【発明の効果】本発明によれば、次のような効果が得ら
れる。 すなわち、機体の前後進変速を行なう変速操作
具の変速操作位置に関係なく、旋回用操作具によって直
進操作、左・右旋回操作、左・右急旋回操作を行なうこ
とができるために、運転操作が容易となり、誤操作を防
止することができて、安全性を向上させることができ
る。According to the present invention, the following effects can be obtained. In other words, regardless of the shift operation position of the shift operation tool for performing forward and backward shifts of the aircraft, the turning operation tool can perform a straight-ahead operation, a left / right turn operation, and a left / right sharp turn operation. Operation becomes easy, erroneous operation can be prevented, and safety can be improved.
【００３４】また、旋回用操作具の操作位置に関係な
く、変速操作具を中立位置にセットすれば、機体は停止
するために、各種作業に応じた機体の走行速度を得るこ
とができて、各種作業能率を向上させることができる。Further, if the speed change operation tool is set to the neutral position irrespective of the operation position of the turning operation tool, the machine stops, so that the traveling speed of the machine according to various operations can be obtained. Various work efficiency can be improved.
【図１】本発明に係る操作部の背面図。FIG. 1 is a rear view of an operation unit according to the present invention.
【図２】同操作部の断面側面図。FIG. 2 is a sectional side view of the operation unit.
【図３】同操作部の要部説明図。FIG. 3 is an explanatory diagram of a main part of the operation unit.
【図４】主変速レバーが中立位置で、かつ、旋回操作レ
バーが中立状態を示す（機体停止）説明図。FIG. 4 is an explanatory view showing that the main transmission lever is in a neutral position and the turning operation lever is in a neutral state (body stop).
【図５】主変速レバーが前進側に変速され、かつ、旋回
操作レバーが中立状態を示す（機体直進）説明図。FIG. 5 is an explanatory view showing a state where the main shift lever is shifted forward, and the turning operation lever is in a neutral state (straight forward).
【図６】主変速レバーが前進側に変速され、かつ、旋回
操作レバーが右旋回状態を示す（機体は右旋回）説明
図。FIG. 6 is an explanatory diagram illustrating a state where a main shift lever is shifted forward, and a turning operation lever is in a right turning state (the body is turning right).
【図７】主変速レバーが前進側に変速され、かつ、旋回
操作レバーが右スピンターン状態を示す（機体は右急旋
回）説明図。FIG. 7 is an explanatory diagram showing that the main shift lever is shifted forward, and the turning operation lever is in a right spin turn state (the aircraft is turning sharply to the right).
Ａ 操作部 10 操作台 12 旋回操作レバー 13 変速アーム 14 変速アーム A operation unit 10 operation table 12 swing operation lever 13 speed change arm 14 speed change arm
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−208775（ＪＰ，Ａ) 特開 平２−136378（ＪＰ，Ａ) 特開 昭64−30884（ＪＰ，Ａ) 実開 昭59−43566（ＪＰ，Ｕ) 実開 昭54−159630（ＪＰ，Ｕ) 実開 昭59−140968（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B62D 11/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-208775 (JP, A) JP-A-2-136378 (JP, A) JP-A-64-30884 (JP, A) 43566 (JP, U) Shokai 54-159630 (JP, U) Shokai 59-140968 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) B62D 11/00
Claims (1)
一対の変速アーム(13,14)の基端を同軸的に枢支して、
各変速アーム(13,14)を旋回操作具(12)の旋回操作に連
動して回動可能とし、各変速アーム(13,14)の先端に
は、それぞれ変速用揺動体(17,18)の中途部を枢支し
て、各変速用揺動体(17,18)を変速操作具(35)の変速操
作に連動して揺動可能とし、 しかも、各変速用揺動体(17,18)は、ＨＳＴ増減速機構
(M1,M2)に連動連結すると共に、各変速アーム(13,14)の
回動作動と各変速用揺動体(17,18)の揺動作動にＨＳＴ
増減速機構(M1,M2)の増減速作動を連動させたことを特
徴とする作業車の操作部構造。1. An arm support shaft (11 ) provided on an operation console (10) ,
By pivotally supporting the base ends of the pair of shift arms (13, 14) coaxially,
Each of the speed change arms (13, 14) is rotatable in conjunction with the turning operation of the turning operation tool (12) , and the tip of each of the speed change arms (13, 14) is provided with a speed changing body (17, 18). Pivotally supporting the middle part of each of the speed changeable rockers (17, 18) in association with the speed change operation of the speed change operation tool (35) , and furthermore, each of the speed change rockers (17, 18). Is the HST acceleration / deceleration mechanism
(M1, M2) , and the HST is used for the rotation operation of each shift arm (13, 14) and the swing operation of each shift rocker (17, 18).
An operating unit structure for a work vehicle, wherein an acceleration / deceleration operation of an acceleration / deceleration mechanism (M1, M2) is linked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12664794A JP3213166B2 (en) | 1994-06-08 | 1994-06-08 | Operation unit structure of work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12664794A JP3213166B2 (en) | 1994-06-08 | 1994-06-08 | Operation unit structure of work vehicle |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001040853A Division JP3481597B2 (en) | 2001-02-16 | 2001-02-16 | Operation unit structure of work vehicle |
| JP2001040854A Division JP3481598B2 (en) | 2001-02-16 | 2001-02-16 | Operation unit structure of work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07329818A JPH07329818A (en) | 1995-12-19 |
| JP3213166B2 true JP3213166B2 (en) | 2001-10-02 |
Family
ID=14940386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12664794A Expired - Lifetime JP3213166B2 (en) | 1994-06-08 | 1994-06-08 | Operation unit structure of work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3213166B2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6325166B1 (en) | 1996-09-13 | 2001-12-04 | Yanmar Agricultural Equipment Co., Ltd. | Hydraulic travelling agricultural machine |
| EP0931715A4 (en) * | 1996-09-13 | 2001-03-14 | Yanmar Agricult Equip | Hydraulic travelling agricultural machine |
| JPH1095360A (en) | 1996-09-20 | 1998-04-14 | Yanmar Agricult Equip Co Ltd | Steering mechanism of traveling transmission |
| CN106976481B (en) * | 2017-03-29 | 2022-11-11 | 星光农机股份有限公司 | Steering transmission structure |
| CN106965854B (en) * | 2017-03-29 | 2022-11-11 | 星光农机股份有限公司 | Transmission control device |
-
1994
- 1994-06-08 JP JP12664794A patent/JP3213166B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07329818A (en) | 1995-12-19 |
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