JP2561448Y2 - Travel operating device for passenger work vehicles - Google Patents

Travel operating device for passenger work vehicles

Info

Publication number
JP2561448Y2
JP2561448Y2 JP4013590U JP4013590U JP2561448Y2 JP 2561448 Y2 JP2561448 Y2 JP 2561448Y2 JP 4013590 U JP4013590 U JP 4013590U JP 4013590 U JP4013590 U JP 4013590U JP 2561448 Y2 JP2561448 Y2 JP 2561448Y2
Authority
JP
Japan
Prior art keywords
operation pedal
brake plate
trunnion shaft
shaft
pedal
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 - Fee Related
Application number
JP4013590U
Other languages
Japanese (ja)
Other versions
JPH03130954U (en
Inventor
勉 山根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MITSUBISHI NOUKI KABUSHIKI KAISHA
Original Assignee
MITSUBISHI NOUKI KABUSHIKI KAISHA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MITSUBISHI NOUKI KABUSHIKI KAISHA filed Critical MITSUBISHI NOUKI KABUSHIKI KAISHA
Priority to JP4013590U priority Critical patent/JP2561448Y2/en
Publication of JPH03130954U publication Critical patent/JPH03130954U/ja
Application granted granted Critical
Publication of JP2561448Y2 publication Critical patent/JP2561448Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Control Of Fluid Gearings (AREA)
  • Gear-Shifting Mechanisms (AREA)
  • Control Of Transmission Device (AREA)

Description

【考案の詳細な説明】 (イ) 産業上の利用分野 本考案は、トラクタ、運搬車建設車両その他の乗用作
業車の走行操作装置に関する。
[Detailed description of the invention] (a) Industrial application field The invention relates to a traveling operation device of a tractor, a construction vehicle for a vehicle, and other passenger work vehicles.

(ロ) 従来の技術 従来、操作ペタルの軸に回動型ダンパーを付設し、静
油圧変速機のトラニオン軸に中立復帰装置を装着した乗
用作業車における走行操作装置は既に知られている。
(B) Conventional technology Conventionally, a traveling operation device in a passenger work vehicle in which a rotary damper is attached to a shaft of an operation petal and a neutral return device is attached to a trunnion shaft of a hydrostatic transmission is already known.

(ハ) 考案が解決しようとする問題点 前記既知の乗用作業車の走行操作装置のペタル軸に装
着するダンパーは回動方式であるため構造が複雑で高価
であり、また、上記ダンパー以外にトラニオン軸に中立
復帰装置を取付けなけばならないので、全体として構造
が一層複雑になって著しくコスト高になった。
(C) Problems to be Solved by the Invention The damper to be mounted on the petal shaft of the traveling operating device of the known passenger work vehicle has a complicated structure and expensive due to the rotation type, and also has a trunnion other than the above damper. The necessity of mounting a neutral return device on the shaft has made the overall structure more complex and significantly more costly.

本考案は、上記の如き実状に鑑み従来の欠点を解消す
べく創案されたものであって、その目的とするところ
は、 静油圧変速機のトラニオン軸と操作ペダルとを、単一
のオイルダンパーに介した簡単な連続構成で確実に中立
位置に復帰させることができるものでありながら、煩雑
な操作ぺダルの踏込み保持を要することなく、当該操作
ぺダルをロック機構を介して任意の踏込み位置に容易に
固定し得て、機体の走行速度を一定に維持することがで
きると共に、融通機構の融通範囲内で、一定の走行速度
に保持した操作ぺダルの踏み込み操作を行なうことがで
き、作業内容に適した一定速度下における走行速度の微
調整を、必要に応じて簡単に行なうことができる乗用作
業車の走行操作装置を提供しようとするものである。
SUMMARY OF THE INVENTION The present invention has been made in view of the above situation and has been made in order to solve the conventional drawbacks. Can be reliably returned to the neutral position with a simple continuous configuration, but without the need for complicated operation pedals to be stepped on and held, the operation pedals can be moved to any desired position via the lock mechanism. Can be easily fixed, the running speed of the fuselage can be maintained at a constant, and the operation pedal held at a constant running speed can be performed within the accommodation range of the accommodation mechanism, An object of the present invention is to provide a traveling operation device for a passenger work vehicle that can easily perform fine adjustment of a traveling speed under a constant speed suitable for the content as needed.

(ニ) 問題点を解決するための手段 問題点を解決するため、本考案が講じた技術的手段
は、静油圧変速機3を付設したトランスミッションを有
し、前記静油圧変速機3のトラニオン軸5を操作ペダル
17に連動連結した乗用作業車において、上記トラニオン
軸5に軸支した回動自在なアーム6と、一端を操作ペダ
ル17に接続した連杆10の他端とを、中立位置を復帰点と
してトラニオン軸5と略直交する方向に往復動するオイ
ルダンパー8を介して接続すると共に、上記操作ペダル
17の近傍位置に、所要の融通機構Bを介して当該操作ぺ
ダル17に連結されるブレーキ板22と、これを押圧するシ
ュー26からなるロック機構Aを併設し、上記シュー26の
押圧作動でブレーキ板22をロックした際に、該ブレーキ
板22を介して規制される操作ペダル17の踏込み操作を、
前記融通機構Bの融通範囲内で許容するようにしたこと
を特徴とするものである。
(D) Means for Solving the Problems In order to solve the problems, the technical measures taken by the present invention include a transmission provided with the hydrostatic transmission 3, and a trunnion shaft of the hydrostatic transmission 3. 5 for operation pedal
In the passenger work vehicle interlockingly connected to the trunnion shaft 17, the rotatable arm 6 pivotally supported by the trunnion shaft 5 and the other end of the connecting rod 10 having one end connected to the operation pedal 17 are connected to the trunnion with the neutral position as a return point. Connected via an oil damper 8 which reciprocates in a direction substantially perpendicular to the shaft 5, and
At a position near 17, a lock mechanism A including a brake plate 22 connected to the operation pedal 17 via a required accommodation mechanism B and a shoe 26 pressing the brake plate 22 is provided. When the brake plate 22 is locked, the depressing operation of the operation pedal 17 regulated via the brake plate 22
The present invention is characterized in that it is allowed within the accommodation range of the accommodation mechanism B.

(ホ) 作用 したがって本考案によれば、操作ペタルの前部又は後
部を踏み込むことにより機体は前進又は後進し、その踏
込量に応じてオイルダンパーが前方又は後方へ摺動し、
高速または低速側への変速作動が行なわれると共に、変
速後に操作ペダルの踏込みを解除すると、該操作ペタル
はオイルダンパーの復元作用によりゆっくりと中立位置
に復帰する。
(E) Operation Therefore, according to the present invention, the aircraft body moves forward or backward by stepping on the front or rear portion of the operating petal, and the oil damper slides forward or backward according to the amount of stepping,
When the shift operation to the high-speed or low-speed side is performed, and when the depression of the operation pedal is released after the gear shift, the operation petal slowly returns to the neutral position by the restoring action of the oil damper.

また、ロック機構により所要の踏込み位置に操作ペダ
ルを固定して、一定の走行速度に容易に保持することが
でき、しかも当該一定速度を保持した状態において、走
行速度を所定の速度範囲内で可変することができる。
Further, the operation pedal can be fixed at a required stepping position by the lock mechanism, and can be easily maintained at a constant traveling speed. In addition, while the constant speed is maintained, the traveling speed can be varied within a predetermined speed range. can do.

(ヘ) 実施例 本考案の一実施例を図面に基づいて説明する。(F) Embodiment One embodiment of the present invention will be described with reference to the drawings.

第1図ないし第3図において、1は前部にエンジンが
装着されたクラッチハウジング2の後部に連結したHST
ケースであって、静油圧変速機3を内装してあり、横方
向のトラニオン軸5の外部に突出した端部に、アーム6
の基部を螺子により締着して垂下させ、該アーム6の下
端に取付けたピン7には、オイルダンパー8の上面に固
定した受金9の凹部と、連杆10の前部とを遊嵌し、上記
オイルダンパー8は前後方向、つまり、前記トラニオン
軸5と平面視で直交する姿勢になっていてHSTケース1
の側面に螺着した上向きコ字状のブラケット11に軸12を
貫通すると共に一対のナット13により中立位置を調整し
て装着し、前記クランチハウジング2には前部に前進用
の踏み板15を、後部に後進用の踏み板16を固定した操作
ペダル17の中間部をペダル軸18に上下揺動可能に軸支
し、操作ペダル17の軸支部から垂下したアーム部17aに
突設したピン19と前記アーム6の下端のピン7とを連杆
10にて連動連結し、ペダル軸18のクラッチハウジング2
内にある部分には、アーム21を突設し、扇形状のブレー
キ板22の基部を回動自在に遊嵌し、このブレーキ板22の
前部に螺着した円弧状の摩擦板23の前面には、ブレーキ
軸24に遊嵌したボス25から上方へ延出した腕25aにピン
で回動可能に枢着したシュー26を摺接させてロック機構
Aが構成されている。
1 to 3, reference numeral 1 denotes an HST connected to a rear portion of a clutch housing 2 having an engine mounted on a front portion.
A case, in which the hydrostatic transmission 3 is housed, is provided with an arm 6 at an end protruding outside the lateral trunnion shaft 5.
The base of the arm 6 is hung down by a screw, and the pin 7 attached to the lower end of the arm 6 is loosely fitted with the concave portion of the receiving metal 9 fixed to the upper surface of the oil damper 8 and the front portion of the connecting rod 10. The oil damper 8 is in a front-rear direction, that is, in a posture orthogonal to the trunnion shaft 5 in a plan view.
The shaft 12 is penetrated through a bracket 11 having an upward U-shape screwed on a side surface of the shaft, and the neutral position is adjusted and mounted with a pair of nuts 13. An intermediate portion of an operation pedal 17 having a rear stepping plate 16 fixed to the rear portion is pivotally supported on a pedal shaft 18 so as to be able to swing up and down, and a pin 19 protruding from an arm portion 17a hanging down from the shaft support portion of the operation pedal 17 is provided. Link the pin 7 at the lower end of the arm 6
Interlocking connection at 10 and clutch housing 2 for pedal shaft 18
An arm 21 protrudes from a portion located inside, and a base of a fan-shaped brake plate 22 is loosely fitted in a rotatable manner, and a front surface of an arc-shaped friction plate 23 screwed to a front portion of the brake plate 22 is provided. , A lock mechanism A is configured by sliding a shoe 26 rotatably pivoted with a pin to an arm 25a extending upward from a boss 25 loosely fitted to the brake shaft 24.

上記アーム21の先端部にはピン27が突接されており、
該ピン27をブレーキ板22に突設した長孔28に嵌入すると
共に、ブレーキ板22とアーム21とにねじりスプリング30
を介装して前記ピン27が長孔28の上端に圧接するように
付勢することにより融通機構Bが形成され、前記ボス25
から前方へ突出したアーム31の前端は、ワイヤー32を介
してステアリングコラム33に装着されているロックレバ
ー35に連結してある。
A pin 27 protrudes from the tip of the arm 21,
The pin 27 is inserted into an elongated hole 28 protruding from the brake plate 22, and a torsion spring 30 is inserted into the brake plate 22 and the arm 21.
The pin 27 is urged so as to press against the upper end of the long hole 28 to form the accommodating mechanism B, and the boss 25
The front end of the arm 31 protruding forward from is connected to a lock lever 35 mounted on the steering column 33 via a wire 32.

また、第4図は前記オイルダンパー8の中立状態、第
5図は同上前進操作状態を示すものであって、シリンダ
ー36の後部にキャップ37を螺合すると共にOリング38を
介装し、前記軸12は段付き軸40と軸42とからなり、Oリ
ング39及びOリング41を介装するとともに段部にそれぞ
れスプリング受43,44を遊嵌し、それらの間には圧縮ス
プリング45を介装してある。
FIG. 4 shows a neutral state of the oil damper 8 and FIG. 5 shows a forward operation state of the oil damper 8, in which a cap 37 is screwed into a rear portion of a cylinder 36 and an O-ring 38 is interposed. The shaft 12 comprises a stepped shaft 40 and a shaft 42. The O-ring 39 and the O-ring 41 are interposed, and spring supports 43 and 44 are loosely fitted to the steps, respectively, and a compression spring 45 is interposed therebetween. I am wearing it.

そして、変速する時は、ロックレバー35を解除状態と
し、操作ペダル17の前部の踏み板15を踏込むとオイルダ
ンパー8のシリンダー36は連杆10に連動して圧縮スプリ
ング45を圧縮しながら第5図に示す如く後方へ移動し、
充填されているオイルはスプリング受43の外周とシリン
ダー36の内周との僅かな間隙を後方へ流動し、それに伴
ってアーム6及びトラニオン軸5が時計方向にゆっくり
回動するので、側面視で垂直状態(中立状態)であった
静油圧変速機3の斜板が傾動して変速され、その傾斜
度、既ち、操作ペダル17の踏込み量に比例した速度とな
る。
When shifting gears, the lock lever 35 is released, and when the tread plate 15 at the front of the operation pedal 17 is depressed, the cylinder 36 of the oil damper 8 interlocks with the link rod 10 to compress Move backward as shown in Figure 5,
The filled oil flows backward through a slight gap between the outer periphery of the spring receiver 43 and the inner periphery of the cylinder 36, and the arm 6 and the trunnion shaft 5 slowly rotate clockwise with the oil. The swash plate of the hydrostatic transmission 3 that has been in the vertical state (neutral state) is tilted to shift the speed, and the speed becomes proportional to the degree of inclination and the amount of depression of the operation pedal 17.

また、操作ペダル17の後部を踏込むと前述とは反対に
シリンダー36が前方へ移動し、トラニオン軸5が反時計
方向に回動して後進変速され、その速度は操作ペダル17
の踏込み量に比例し、いずれの場合も急激に速度変化す
ることがなく、また、変速操作後にロックレバー35を介
してロック機構Aをロックすると設定した速度を保持
し、ロックを解除すると、オイルダンパー8内の圧縮ス
プリング45が伸長してシリンダー36が中立位置へ復帰
し、それに伴ってトラニオン軸5も中立角度へ回動す
る。この際もゆっくり変速される。ブレーキ板22及びそ
れに摺接するブレーキシュー26等をクラッチハウジング
2内に設けたので、泥土や塵埃等が付着せず、常時的確
な作動が保証される。
When the rear part of the operation pedal 17 is depressed, the cylinder 36 moves forward, contrary to the above, and the trunnion shaft 5 rotates counterclockwise to perform a reverse shift.
In any case, the speed does not change rapidly. In addition, when the lock mechanism A is locked via the lock lever 35 after the shift operation, the set speed is maintained, and when the lock is released, the oil is released. The compression spring 45 in the damper 8 expands and the cylinder 36 returns to the neutral position, and accordingly, the trunnion shaft 5 rotates to the neutral angle. At this time, the speed is changed slowly. Since the brake plate 22 and the brake shoes 26 and the like slidingly contacting the brake plate 22 are provided in the clutch housing 2, muddy dust and the like do not adhere, and accurate operation is always ensured.

なお、前記静油圧変速機3の中立位置は油圧回路にニ
ュートラルバルブを挿入してトラニオン軸角度で30分程
度の中立幅になるようにしてあるので、操作ペダル17を
操作しない状態では中立になる。
Since the neutral position of the hydrostatic transmission 3 is set to a neutral width of about 30 minutes at the trunnion shaft angle by inserting a neutral valve into the hydraulic circuit, the neutral position is neutral when the operation pedal 17 is not operated. .

また、作業中、畦畔沿い等で機体を回向させる時等で
車速を増速する場合には、ロック機構Aをセットしたま
まの状態で操作ペダル17の前部を融通機構Bの融通範
囲、すなわち長孔28内に嵌入したピン27の移動範囲内で
操作ペダル17を踏み込むことができ、機体回向後に操作
ペダル17から足を離すとロックされた設定速度に復帰す
る。
When the vehicle speed is to be increased during work, for example, when turning the aircraft around a ridge, etc., the locking mechanism A is set and the front portion of the operation pedal 17 is moved to the accommodation range of the accommodation mechanism B. That is, the operation pedal 17 can be depressed within the movement range of the pin 27 fitted in the long hole 28, and when the foot is released from the operation pedal 17 after the body turns, the speed returns to the locked set speed.

(ト) 考案の効果 これを要するに、本考案は、静油圧変速機3を付設し
たトランスミッションを有し、前記静油圧変速機3のト
ラニオン軸5を操作ペダル17に連動連結した乗用作業車
において、上記トラニオン軸5に軸支した回動自在なア
ーム6と、一端を操作ペダル17に接続した連杆10の他端
とを、中立位置を復帰点としてトラニオン軸5と略直交
する方向に往復動するオイルダンパー8を介して接続す
ると共に、上記操作ペダル17の近傍位置に、所要の融通
機構Bを介して当該操作ペダル17に連結されるブレーキ
板22と、これを押圧するシュー26からなるロック機構A
を併設し、上記シュー26の押圧作動でブレーキ板22をロ
ックした際に、該ブレーキ板22を介して規制される操作
ぺダル17の踏込み操作を、前記融通機構Bの融通範囲内
で許容するように構成したから、単一のオイルダンパー
8を介した簡単な連結構成で、静油圧変速機3のトラニ
オン軸5と操作ペダル17とを確実に中立位置に復帰させ
るものでありながら、上記操作ペダル17をロック機構A
を介して任意の踏込み位置に容易に固定することがで
き、煩雑な操作ペダル17の踏込み保持を要することなく
機体の走行速度を一定に維持することができると共に、
一定の走行速度に保持した操作ペダル17を、ブレーキ板
22との間に設けた融通機構Bの融通範囲内で踏み込み可
能としたので、作業内容に適した一定速度下における走
行速度の微調整を、必要に応じて簡単に行なうことがで
き、もって柔軟な操作性を有する走行操作装置を、従来
のものにおける中立ディテントを省略しつつ、簡略かつ
軽量に構成し得てコストの低減をも図ることができる。
(G) Effects of the Invention In short, the present invention relates to a passenger work vehicle having a transmission provided with the hydrostatic transmission 3 and the trunnion shaft 5 of the hydrostatic transmission 3 being connected to the operation pedal 17 in an interlocked manner. An arm 6 rotatably supported by the trunnion shaft 5 and the other end of the connecting rod 10 having one end connected to the operation pedal 17 reciprocate in a direction substantially perpendicular to the trunnion shaft 5 with the neutral position as a return point. And a brake plate 22 connected to the operation pedal 17 via a required accommodating mechanism B and a shoe 26 pressing the brake plate 22 at a position near the operation pedal 17. Mechanism A
When the brake plate 22 is locked by the pressing operation of the shoe 26, the operation of the operation pedal 17 regulated via the brake plate 22 is permitted within the accommodation range of the accommodation mechanism B. With such a configuration, the above operation is performed with a simple connection configuration via a single oil damper 8 while reliably returning the trunnion shaft 5 and the operation pedal 17 of the hydrostatic transmission 3 to the neutral position. Locking mechanism for pedal 17
Can be easily fixed to an arbitrary stepping position via, and the traveling speed of the aircraft can be maintained constant without the need for complicated stepping and holding of the operation pedal 17,
Press the operation pedal 17 that maintains a constant running speed
Since the stepping mechanism can be depressed within the accommodation range of the accommodation mechanism B provided between the driving mechanism 22 and the traveling mechanism, fine adjustment of the traveling speed at a constant speed suitable for the work content can be easily performed as needed, and thus flexible. It is possible to configure a traveling operation device having a simple operability with a simple and light weight while omitting the neutral detent in the conventional device, and to reduce the cost.

【図面の簡単な説明】[Brief description of the drawings]

図面は本考案の一実施例を示すものであって、第1図は
トラクタの静油圧変速装置操作部の側面図、第2図は同
上平断面図、第3図は同上側面図、第4図及び第5図は
オイルダンパーの断面図である。 3……静油圧変速機、5……トラニオン軸、6……アー
ム、8……オイルダンパー、10……連杆、17……操作ペ
ダル、22……ブレーキ板、23……摩擦板、35……ロック
レバー、A……ロック機構、B……融通機構
1 is a side view of a hydrostatic transmission operating portion of a tractor, FIG. 2 is a plan sectional view of the same, FIG. 3 is a side view of the same, and FIG. FIG. 5 and FIG. 5 are sectional views of the oil damper. 3 ... hydrostatic transmission, 5 ... trunnion shaft, 6 ... arm, 8 ... oil damper, 10 ... connecting rod, 17 ... operation pedal, 22 ... brake plate, 23 ... friction plate, 35 ... Lock lever, A ... Lock mechanism, B ... Flexible mechanism

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】静油圧変速機3を付設したトランスミッシ
ョンを有し、前記静油圧変速機3のトラニオン軸5を操
作ペダル17に連動連結した乗用作業車において、上記ト
ラニオン軸5に軸支した回動自在なアーム6と、一端を
操作ペダル17に接続した連杆10の他端とを、中立位置を
復帰点としてトラニオン軸5と略直交する方向に往復動
するオイルダンパー8を介して接続すると共に、上記操
作ペダル17の近傍位置に、所要の融通機構Bを介して当
該操作ぺダル17に連結されるブレーキ板22と、これを押
圧するシュー26からなるロック機構Aを併設し、上記シ
ュー26の押圧作動でブレーキ板22をロックした際に、該
ブレーキ板22を介して規制される操作ペダル17の踏込み
操作を、前記融通機構Bの融通範囲内で許容するように
構成したことを特徴とする乗用作業車の走行操作装置。
1. A passenger work vehicle having a transmission provided with a hydrostatic transmission 3 and having a trunnion shaft 5 of the hydrostatic transmission 3 interlocked with an operation pedal 17, the rotation of which is supported by the trunnion shaft 5. The movable arm 6 and the other end of the connecting rod 10 having one end connected to the operation pedal 17 are connected via an oil damper 8 which reciprocates in a direction substantially orthogonal to the trunnion shaft 5 with the neutral position as a return point. At the same time, a lock mechanism A including a brake plate 22 connected to the operation pedal 17 via a required accommodation mechanism B and a shoe 26 pressing the brake plate 22 is provided at a position near the operation pedal 17. When the brake plate 22 is locked by the pressing operation of 26, a depression operation of the operation pedal 17 regulated via the brake plate 22 is permitted within the accommodation range of the accommodation mechanism B. To be Travel operating device for passenger work vehicles.
JP4013590U 1990-04-13 1990-04-13 Travel operating device for passenger work vehicles Expired - Fee Related JP2561448Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4013590U JP2561448Y2 (en) 1990-04-13 1990-04-13 Travel operating device for passenger work vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4013590U JP2561448Y2 (en) 1990-04-13 1990-04-13 Travel operating device for passenger work vehicles

Publications (2)

Publication Number Publication Date
JPH03130954U JPH03130954U (en) 1991-12-27
JP2561448Y2 true JP2561448Y2 (en) 1998-01-28

Family

ID=31549662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4013590U Expired - Fee Related JP2561448Y2 (en) 1990-04-13 1990-04-13 Travel operating device for passenger work vehicles

Country Status (1)

Country Link
JP (1) JP2561448Y2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1375315B1 (en) * 2001-04-04 2013-08-21 Yanmar Co., Ltd. Crawler tractor
JP4746198B2 (en) * 2001-04-05 2011-08-10 ヤンマー株式会社 Crawler tractor operation link neutral return mechanism
JP4967367B2 (en) * 2006-02-21 2012-07-04 井関農機株式会社 Traveling vehicle

Also Published As

Publication number Publication date
JPH03130954U (en) 1991-12-27

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