JPH035710Y2 - - Google Patents
Info
- Publication number
- JPH035710Y2 JPH035710Y2 JP1985003256U JP325685U JPH035710Y2 JP H035710 Y2 JPH035710 Y2 JP H035710Y2 JP 1985003256 U JP1985003256 U JP 1985003256U JP 325685 U JP325685 U JP 325685U JP H035710 Y2 JPH035710 Y2 JP H035710Y2
- Authority
- JP
- Japan
- Prior art keywords
- speed change
- boss
- operating
- arm
- operating shaft
- 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
Links
- 230000005540 biological transmission Effects 0.000 claims description 16
- 230000007935 neutral effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 241001124569 Lycaenidae Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Landscapes
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Vibration Prevention Devices (AREA)
- Control Of Fluid Gearings (AREA)
- Gear-Shifting Mechanisms (AREA)
- Mechanical Control Devices (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、アキシヤルプランジヤ型の油圧式
無段変速装置における斜板角変更用の操作軸に取
付けた変速アームと、任意の操作位置に固定可能
な変速操作具とをリンク連係させてある作業車の
走行変速操作構造に関する。[Detailed description of the invention] [Industrial application field] This invention consists of a shift arm attached to an operating shaft for changing the swash plate angle in an axial plunger type hydraulic continuously variable transmission, and a shift arm that can be moved to any operating position. The present invention relates to a traveling speed change operation structure for a work vehicle in which a fixable speed change operation tool is linked.
従来、上記構成の走行変速操作構造として、、
コンバインにおいては例えば実開昭57−101627号
公報、トラクタにおいては例えば実開昭57−
66922号公報で開示されたものがあるが、、いづれ
も変速操作具(コンバインではレバー、トラクタ
ではペダル)と操作軸とは単にリンク機構で連係
されているにすぎない。
Conventionally, as a traveling speed change operation structure with the above configuration,
For combine harvesters, for example, Utility Model Application No. 57-101627, and for tractors, for example, Utility Model Application No. 57-101627.
There is one disclosed in Japanese Patent No. 66922, but in all of them, the speed change operating tool (a lever for a combine harvester, a pedal for a tractor) and an operating shaft are merely linked by a link mechanism.
アキシヤルプランジヤ型の油圧式無段変速装置
H・S・T・においては、斜板に作用する反力の
脈動によつて操作軸が回動振動し、、これがリン
ク機構に伝わつて各支点で騒音が発生したり、変
速操作具が振動することがあつた。
In the axial plunger type hydraulic continuously variable transmission H/S/T, the operating shaft rotates and vibrates due to the pulsation of the reaction force acting on the swash plate, and this is transmitted to the link mechanism and at each fulcrum. There were cases where noise was generated and the gear shift operation tool vibrated.
又、変速操作具を所望の位置に固定セツトした
状態では斜板角が一義的に定められるために、走
行負荷が増大したような場合には直ちにエンジン
回転数の低下につながり、作業装置の駆動速度が
低下する不具合をもたらすものであつた。 In addition, since the swash plate angle is uniquely determined when the gear shift operating tool is fixedly set at the desired position, when the running load increases, the engine speed immediately decreases and the drive of the work equipment becomes difficult. This resulted in a problem that the speed decreased.
本考案は上記従来欠点を解消することを目的と
してなされたものである。 The present invention has been made with the aim of eliminating the above-mentioned conventional drawbacks.
本考案は、冒記構成の走行変速操作構造におい
て、前記変速アームのボスを、前記操作軸に外嵌
固定される内ボスと、これに外嵌される外ボスか
ら構成するとともに、内外ボスを両者間に介装し
た環状ゴムで弾性的に連結してある点に特徴があ
る。
In the traveling speed change operating structure having the above configuration, the present invention comprises the boss of the speed change arm consisting of an inner boss externally fitted and fixed to the operating shaft, and an outer boss externally fitted to this, and an inner and outer boss. The feature is that the two are elastically connected by an annular rubber interposed between them.
上記構成によると、、変速装置の操作軸に回動
振動が発生しても操作軸と変速アームとの間で弾
性的に吸収され、リンク機構や変速操作具の振
動、や騒音発生が抑制される。
According to the above configuration, even if rotational vibration occurs on the operating shaft of the transmission, it is elastically absorbed between the operating shaft and the shift arm, and vibrations and noise generation of the link mechanism and shift operating tool are suppressed. Ru.
又、局部的な軟弱地への進入や機体旋回などで
の走行負荷増大時には、静油圧式無段変速装置の
特性として操作軸を低速側に戻す反力が増大し、
変速操作具の設定固定に対応して固定されている
変速アームに対して操作軸は環状ゴムを弾性変形
させながら低速側に回動し、走行変速低下に伴つ
て走行負荷が減少されることによつてエンジン回
転数の不当な低下が未然に抑制される。 In addition, when the traveling load increases due to entering locally soft ground or turning the aircraft, the reaction force that returns the operating shaft to the low speed side increases as a characteristic of the hydrostatic continuously variable transmission.
The operating shaft rotates to the lower speed side while elastically deforming the annular rubber with respect to the fixed gear shift arm that corresponds to the fixed setting of the gear shift operating tool, and the running load is reduced as the running gear decreases. Therefore, an unreasonable decrease in engine speed is prevented.
従つて、変速装置の操作軸に取付ける変速アー
ムのボスを、環状ゴムを介在した2重ボスにする
だけの比較的簡単な改造で、従来構造に見られた
異質な二つの問題を一挙に解決することができ
た。
Therefore, by simply modifying the boss of the transmission arm attached to the operating shaft of the transmission to a double boss with an annular rubber interposed, two different problems found in conventional structures can be solved at once. We were able to.
しかも、弾性融通を変速アームのボス自体に組
込んであるので、変速アームの操作軸への取付け
は従来と同様に簡単に行える。 Moreover, since the elastic flexibility is built into the boss of the transmission arm itself, the transmission arm can be easily attached to the operating shaft in the same manner as before.
以下本考案の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第6図は作業機の一例にあげたコンバインを示
し、クローラ走行装置1を備えた機台2に脱穀装
置3が搭載されるとともに、機台2の前部に刈取
前処理部4が連結されている。 FIG. 6 shows a combine harvester as an example of a working machine, in which a threshing device 3 is mounted on a machine stand 2 equipped with a crawler traveling device 1, and a reaping pre-processing section 4 is connected to the front part of the machine stand 2. ing.
第3図は前記クローラ走行装置1の駆動系を示
し、機台2に搭載されたエンジン5の出力は伝動
ベルト6を介してアキシヤルプランジヤ型の油圧
式無段変速装置7に入力され、その出力がギヤト
ランスミツシヨンケース8を介して車軸9に取出
される。 FIG. 3 shows the drive system of the crawler traveling device 1, in which the output of the engine 5 mounted on the machine base 2 is input to an axial plunger type hydraulic continuously variable transmission 7 via a transmission belt 6. The output is taken out to an axle 9 via a gear transmission case 8.
前記変速装置7の後面には内装斜板の角度を変
更調節して出力の回転速度及び回転方向を変更す
るための操作軸(トラニオン軸と称される)10
が突設され、その軸端に変速アーム11が取付け
られている。 On the rear surface of the transmission 7 is an operating shaft (referred to as a trunnion shaft) 10 for changing and adjusting the angle of the internal swash plate to change the output rotation speed and rotation direction.
is provided in a protruding manner, and a speed change arm 11 is attached to the shaft end thereof.
エンジン上方に設けた運転席12の横側には前
後揺動自在な変速操作具としてのレバー13が配
設され、このレバー13の基部に設けたアーム1
4と前記変速アーム11とがロツド15を介して
連係されている。 On the side of the driver's seat 12 provided above the engine, a lever 13 as a gear change operation tool that can swing back and forth is provided, and an arm 1 is provided at the base of this lever 13.
4 and the transmission arm 11 are linked via a rod 15.
そして、前記変速アーム11のボスは第1図及
び第2図に示すように操作軸10にキー止めされ
る内ボス16aとアーム11を備えた外ボス16
bとからなり、かつ、両ボス16a,16b間に
環状のゴム17が焼付けられ、もつて両ボス16
a,16bが弾性的に適当範囲内で相対回動でき
るよう構成されている。 As shown in FIGS. 1 and 2, the boss of the speed change arm 11 is an outer boss 16 having an inner boss 16a and an arm 11, which are keyed to the operating shaft 10.
b, and an annular rubber 17 is baked between both bosses 16a and 16b, so that both bosses 16
a and 16b are constructed so that they can elastically rotate relative to each other within an appropriate range.
又、前記変速操作レバー13は以下の構造によ
つて任意の操作位置に固定セツトできる。 Further, the shift operating lever 13 can be fixedly set at any operating position by the following structure.
つまり、第4図及び第5図に示すように、固定
フレーム18に設けたボス19に段付き支軸20
が遊嵌支承され、この支軸20の突出小径部に、
固定板21、摩擦板22、変速操作レバーアーム
14、平座金23、一対の皿バネ24,24、ス
ラストベアリング25が順次挿嵌されてダブルナ
ツト26で締込みセツトされ、もつて、変速操作
レバーアーム14を任意の回動位相で摩擦保持す
るよう構成されている。又、前記固定板21は固
定フレーム18に設けたピン27に凹部28を介
して係合されて回り止めされているが、、ピン2
7と凹部28との間の回動方向での僅かな間〓分
だけ固定フレーム18に対する回動が許され、、
変速操作レバー13の「あそび」が形成されてい
る。この「あそび」は、変速操作レバー13を中
立に戻したとき、操作軸10が内部反力によつて
確実に中立位相に復帰させる機能を有している。 That is, as shown in FIGS. 4 and 5, a stepped support shaft 20 is attached to a boss 19 provided on the fixed frame 18.
is loosely supported, and on the protruding small diameter part of this support shaft 20,
The fixed plate 21, the friction plate 22, the gear shift operating lever arm 14, the flat washer 23, the pair of disc springs 24, 24, and the thrust bearing 25 are sequentially inserted and set by tightening with the double nuts 26, and then the gear shift operating lever arm is assembled. 14 is frictionally held at any rotational phase. Further, the fixing plate 21 is engaged with a pin 27 provided on the fixing frame 18 via a recess 28 and is prevented from rotating.
Rotation relative to the fixed frame 18 is allowed for a short period of time in the rotation direction between 7 and the recess 28,
A "play" for the speed change operation lever 13 is formed. This "play" has the function of ensuring that the operating shaft 10 returns to the neutral phase by an internal reaction force when the shift operating lever 13 is returned to the neutral position.
尚、図中の29は変速操作レバー13の基部近
の側面から上下動可能に突出させた後進牽制ピン
であり、固定フレーム18に取付けた牽制プレー
ト30の段付き長孔31に係入され、通常時には
中立位置Nから前進域Fでの操作のみを許し、レ
バー握り部13aのノブ32を上方に押込んで牽
制ピン29を引上げることで後進域Rへの移行が
許される。又、33は変速操作レバー13の操作
位置を感知する摺動接点式のスイツチボツクスで
あり、レバー13が中立位置にあるときにのみエ
ンジン始動を許し、後進域Rにあるときにバツク
ブザーが作動される。又、34はロツド15の中
間に介装した弾性伸縮部であつて、操作軸10の
前進側限度以上に変速操作レバー13が操作され
たときのストローク吸収を行うため、操作軸10
の最大反力より強く初期変形させた圧縮バネ35
が内装されている。 In addition, 29 in the figure is a reverse movement restraining pin that protrudes from the side surface near the base of the speed change operation lever 13 so as to be able to move up and down, and is engaged in a stepped elongated hole 31 of a restraining plate 30 attached to the fixed frame 18. Normally, operation is only allowed in the forward range F from the neutral position N, and transition to the reverse range R is permitted by pushing the knob 32 of the lever grip part 13a upward and pulling up the check pin 29. Further, 33 is a sliding contact type switch box that senses the operating position of the gear shift operating lever 13, which allows the engine to start only when the lever 13 is in the neutral position, and activates the back buzzer when the lever is in the reverse range R. Ru. Reference numeral 34 denotes an elastic expansion/contraction section interposed in the middle of the rod 15, which absorbs the stroke when the shift operation lever 13 is operated beyond the forward limit of the operation shaft 10.
The compression spring 35 is initially deformed stronger than the maximum reaction force of
It's decorated.
図面は本考案に係る作業車の走行変速操作構造
の実施例を示し、第1図は油圧式無段変速装置の
操作部を示す正面図、第2図はその横断平面図、
第3図は走行装置の駆動系を示す概略側面図、第
4図は変速操作レバー取付部の正面図、第5図は
変速操作レバー取付部の運転者側から見た側面
図、第6図はコンバインの全体側面図である。
7…油圧式無段変速装置、10…操作軸、11
…変速アーム、13…変速操作具、16a…内ボ
ス、16b…外ボス、17…ゴム。
The drawings show an embodiment of the traveling speed change operation structure for a working vehicle according to the present invention, FIG. 1 is a front view showing the operating section of the hydraulic continuously variable transmission, FIG. 2 is a cross-sectional plan view thereof,
Figure 3 is a schematic side view showing the drive system of the traveling device, Figure 4 is a front view of the gear shift operation lever attachment part, Figure 5 is a side view of the gear change operation lever attachment part as seen from the driver's side, and Figure 6. is an overall side view of the combine harvester. 7...Hydraulic continuously variable transmission, 10...Operation shaft, 11
...speed change arm, 13...speed change operating tool, 16a...inner boss, 16b...outer boss, 17...rubber.
Claims (1)
7における斜板角変更用の操作軸10に取付けた
変速アーム11と、任意の操作位置に固定可能な
変速操作具13とをリンク連係させてある作業車
の走行変速操作構造であつて、前記変速アーム1
1のボスを、前記操作軸10に外嵌固定される内
ボス16aと、これに外嵌される外ボス16bか
ら構成するとともに、内外ボス16a,16bを
両者間に介装した環状ゴム17で弾性的に連結し
てある作業車の走行変速操作構造。 Work in which the shift arm 11 attached to the operating shaft 10 for changing the swash plate angle in the axial plunger type hydraulic continuously variable transmission 7 and the shift operating tool 13 that can be fixed at any operating position are linked together. A driving speed change operation structure for a vehicle, wherein the speed change arm 1
The first boss is composed of an inner boss 16a externally fitted and fixed to the operating shaft 10, and an outer boss 16b externally fitted thereto, and an annular rubber 17 with the inner and outer bosses 16a, 16b interposed between the two. A traveling speed change operation structure for a work vehicle that is elastically connected.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985003256U JPH035710Y2 (en) | 1985-01-14 | 1985-01-14 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1985003256U JPH035710Y2 (en) | 1985-01-14 | 1985-01-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61118838U JPS61118838U (en) | 1986-07-26 |
JPH035710Y2 true JPH035710Y2 (en) | 1991-02-14 |
Family
ID=30477714
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1985003256U Expired JPH035710Y2 (en) | 1985-01-14 | 1985-01-14 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH035710Y2 (en) |
-
1985
- 1985-01-14 JP JP1985003256U patent/JPH035710Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS61118838U (en) | 1986-07-26 |
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