JPH0248236A - Speed changing operation of agricultural vehicle - Google Patents
Speed changing operation of agricultural vehicleInfo
- Publication number
- JPH0248236A JPH0248236A JP20052988A JP20052988A JPH0248236A JP H0248236 A JPH0248236 A JP H0248236A JP 20052988 A JP20052988 A JP 20052988A JP 20052988 A JP20052988 A JP 20052988A JP H0248236 A JPH0248236 A JP H0248236A
- Authority
- JP
- Japan
- Prior art keywords
- clutch
- brake
- speed
- transmission mechanism
- 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.)
- Pending
Links
- 230000007935 neutral effect Effects 0.000 claims abstract description 22
- 230000005540 biological transmission Effects 0.000 claims description 40
- 230000000694 effects Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
- Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は農用車輌の変速操作装置に関し、簡単なトラ
クターや乗用草刈機等に利用する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a gear shift operating device for agricultural vehicles, and is applied to simple tractors, riding mowers, and the like.
従来の技術、および発明が解決しようとする課題
変速レバーの操作で変速中立位置から多段の前進側に変
速しうると共に、中立位置から後進側に切替しうる変速
伝動機構と、この変速伝動機構への伝動を断続しうるク
ラッチと、変速伝動機構を制動しうるブレーキとを有し
た形態の農用車輌において２例えば車輌の前進状態から
後進に切替る場合、クラッチを切側にしても車輌が慣性
で前進しているときに変速伝動機構を後進に切替ると、
伝動機構の回転方向が急激に逆になるため、伝動機構に
衝撃が加わり早期に損傷させるとか、搭乗者にも危険を
及ぼす等の虞れがある。BACKGROUND ART AND PROBLEMS TO BE SOLVED BY THE INVENTION A speed change transmission mechanism capable of shifting from a neutral position to a multi-speed forward side and switching from a neutral position to a reverse side by operating a speed change lever, and to this speed change transmission mechanism In an agricultural vehicle equipped with a clutch capable of intermittent transmission and a brake capable of braking the speed change transmission mechanism, for example, when switching from a forward state to a reverse state, the vehicle is inertia even if the clutch is disengaged. If you switch the transmission mechanism to reverse while moving forward,
Since the rotational direction of the transmission mechanism is suddenly reversed, there is a risk that a shock may be applied to the transmission mechanism, causing early damage to the transmission mechanism or endangering passengers.
課題を解決するための手段
この発明は、変速中立位置から複数段の前進側に変速し
うると共に、該中立位置から後進側に切替しうる変速伝
動機構と、この変速伝動機構への伝動を断続しうるクラ
ッチ（２）と、このクラッチ（２）を変速レバー（１）
の回動操作で切側にすると共に、該変速伝動機構を変速
作動させた後、該クラッチ（２）を入側にするクラッチ
連動機構（４）と、該変速伝動機構を制動しうるブレー
キ（５）とを有した農用車輌において、前記変速レバー
（１）と該ブレーキ（５）との間に、当該変速レバー（
１）の前記中立位置から後進側への操作で該ブレーキ（
５）を制動側にさせて後進切替後、この制動を解除しう
るブレーキ連動機構（６）を設けたことを特徴とする農
用車輌の変速操作装置の構成とする。Means for Solving the Problems This invention provides a speed change transmission mechanism capable of shifting from a neutral speed position to a plurality of forward speeds and switching from the neutral position to a reverse speed side, and a speed change transmission mechanism capable of intermittent transmission to this speed change transmission mechanism. A clutch (2) that can be connected to the gear shift lever (1)
a clutch interlocking mechanism (4) that turns the clutch (2) into the on-side position after turning the clutch (2) into the disengaged side by a rotational operation and operates the speed change transmission mechanism; and a brake (4) that can brake the speed change transmission mechanism. 5), in which the speed change lever (1) is disposed between the speed change lever (1) and the brake (5);
1) When the brake is operated from the neutral position to the reverse side (
The gear change operation device for an agricultural vehicle is characterized in that it is provided with a brake interlocking mechanism (6) that can release the brake after switching to reverse by switching the gear shifter 5) to the braking side.
発明の作用
変速レバー（１）を変速中立位置から前進側に回動操作
すると、クラッチ連動機構（４）でクラッチ（２）が切
側になると共に変速伝動機構が前進変速された後、クラ
ッチ連動機構（４）でクラッチ（２）が入側になるため
、車輌は前進走行する。Operation of the Invention When the gear shift lever (1) is rotated from the neutral shift position to the forward side, the clutch (2) is turned to the disengaged side by the clutch interlocking mechanism (4), and after the shift transmission mechanism is shifted forward, the clutch is engaged. Since the mechanism (4) causes the clutch (2) to be on the inlet side, the vehicle travels forward.
変速レバー（１）を前進変速位置から後進側に回動操作
すると、変速レバー（１）が中立位置を経由することに
よって、クラッチ連動機構（４）でクラッチ（２）が切
側になると共に、ブレーキ連動機構（６）で変速伝動機
構が制動されるため、車輌は一旦停止し、ついで変速レ
バーが後進切替位置に位置することによって、ブレーキ
連動機構（６）で制動が解除されると共に、クラッチ連
動機構（４）でクラッチ（２）が入側になるため車輌は
後進走行する。When the shift lever (1) is rotated from the forward shift position to the reverse side, the shift lever (1) passes through the neutral position, and the clutch interlocking mechanism (4) shifts the clutch (2) to the disengaged side. The brake interlocking mechanism (6) brakes the speed change transmission mechanism, so the vehicle temporarily stops.Then, when the speed change lever is placed in the reverse switching position, the brake interlocking mechanism (6) releases the braking, and the clutch The interlocking mechanism (4) moves the clutch (2) to the input side, so the vehicle runs backwards.
発明の効果
このような作用によって、変速伝動機構を前進側から後
進側に切替る場合、変速伝動機構は一旦制動されるため
、前記課題のように変速伝動機構の回転方向が急激に逆
になることがなく、従って衝撃による伝動機構の早期損
傷とか、搭乗者への危険も伴い雉い。Effects of the Invention Due to such an action, when the speed change transmission mechanism is switched from the forward side to the reverse side, the speed change transmission mechanism is temporarily braked, so the rotation direction of the speed change transmission mechanism is suddenly reversed as in the problem described above. Therefore, there is a risk of early damage to the transmission mechanism due to impact and danger to passengers.
実施例
なお回倒において、前部に原動機を内装せるボンネット
（８）を有した機枠（９）を設け、この機枠（９）の後
部には、左右一対の後輪ｉｌｌ （１）を軸装してこれ
ら後輪ｆｌ［Ｉ （＋（Ｉに伝動する変速伝動機構を内
装した伝動ケース（１０を設ける。Embodiment In the case of rotation, a machine frame (9) having a bonnet (8) in which the prime mover can be housed is provided at the front, and a pair of left and right rear wheels ill (1) are installed at the rear of this machine frame (9). A transmission case (10) is provided which houses a variable speed transmission mechanism that is mounted on the shaft and transmits transmission to these rear wheels fl[I (+(I).
この伝動ケース＋Ｉｔ）の前側下部には、前記変速伝動
機構に伝動する入力軸を内装した摺動ガイド（１乃を前
方に向けて突設し、該入力軸の前端部には、前記原動機
側から伝動される伝動軸０３を有してこの伝動軸（１３
から該入力軸への伝動を断続しうるクラッチ（２）を設
け、又該摺動ガイド叩上には、前端部に大径部（１４ａ
）を有し前方摺動によって該クラッチ（２）を切側にさ
せる摺動体（ロ）を設ける。At the lower front side of the transmission case +It), there is provided a sliding guide (1) protruding forward that includes an input shaft for transmitting the transmission to the speed change transmission mechanism. This transmission shaft (13
A clutch (2) capable of intermittent transmission of power from the input shaft to the input shaft is provided, and the sliding guide has a large diameter portion (14a) at the front end.
), and is provided with a sliding body (b) that moves the clutch (2) to the disengaged side by sliding forward.
又この摺動体（至）の上方には、支持部材０９を介して
前記機枠（９）に支持された左右方向の支軸Ｏｅを設け
、この支軸（ｌｅ上には、該摺動体（至）の大径部（１
４ａ）に係合してこの摺動体（１４を前方摺動させるシ
フトアーム（ωと、後方に向けて突出する連動杆０１１
とからなるクラッチ連動機構（４）を回動自在に設け、
さらに該支軸ａＳ上には、左右方向のローラー（３）を
軸支したクラッチ連動機構（４）の揺動杆囮を回動自在
に設け、又この揺動杆（Ｆｊの後端部と前記連動杆（Ｉ
ｌｌとの間には、前記摺動体（至）の大径部（１４ａ）
に対する前記シフトアーム（ｍの係合関係を変更調節し
うる調節ボルト（２）を設け、該揺動杆囮の後端部と機
体に支持された支持部材の）との間には、当該揺動杆（
至）を上方に向けて弾発付勢するスプリング局を張設し
、さらに該揺動杆刊の後端部と前記機枠（９）との間に
は、当該揺動杆（Ｉの反発作動を抑止するダンパー（２
）を設ける。Further, above this sliding body (to), a horizontal support shaft Oe supported by the machine frame (9) via a support member 09 is provided, and on this support shaft (le), the sliding body ( (to) large diameter part (1
A shift arm (ω) that engages with the sliding body (14) and slides the sliding body (14 forward)
A clutch interlocking mechanism (4) consisting of is rotatably provided,
Further, on the support shaft aS, a swinging rod of the clutch interlocking mechanism (4) which pivotally supports the left and right rollers (3) is rotatably provided, and this swinging rod (Fj's rear end and The interlocking rod (I
The large diameter portion (14a) of the sliding body (to) is between
An adjustment bolt (2) that can change and adjust the engagement relationship of the shift arm (m) is provided between the rear end of the swinging rod decoy and the support member supported by the aircraft body. Moving rod (
A spring station is installed to bias the swinging rod (I) upward, and between the rear end of the swinging rod (I) and the machine frame (9), Damper (2) that suppresses operation
) will be established.
前記伝動ケース（１０の上端部には、前記変速伝動機構
を変速中立位置から側面視反時計方向の回動によって漸
次前進高速側に多段に変速しうると共に、該中立位置か
ら時計方向への回動によって後進側に切替しうる左右方
向の変速軸ｅ４を突設し、この変速軸９勺の突出部には
、当該変速軸（ハ）の回動による前進変速の再毎に前記
係合ローラー（３）を下方へ移動させる各突起０００υ
・・・を有した扇形状のクラッチ作動板（７）を固着し
、又このクラッチ作動板（７）の上端部には、前後方向
のピン（支）を支持した支持具田を設け、このピン（至
）上には、上方に向けて突出する変速レバー（１）を回
動自在に設ける。The upper end of the transmission case (10) is provided with a transmission case (10) that allows the speed change transmission mechanism to be gradually shifted forward and to a high speed side in multiple stages by rotating the speed change transmission mechanism from the neutral position in a counterclockwise direction when viewed from the side, and also to rotate clockwise from the neutral position. A shift shaft e4 in the left and right direction that can be switched to the reverse side by movement is provided protrudingly, and the engagement roller is attached to the protruding portion of the shift shaft 9 every time the forward gear is changed by rotation of the shift shaft (c). (3) Each protrusion that moves downward 000υ
A fan-shaped clutch actuation plate (7) having... is fixed, and a support field supporting a longitudinal pin (support) is provided at the upper end of this clutch actuation plate (7). A gear lever (1) projecting upward is rotatably provided on the pin.
又この変速レバー（１１の該ピン（至）の上方には、軸
支されたブレーキ連動機構（６）のローラー（至）を後
方に向けて突設し、前記クラッチ作動板（７）の上端後
部には、前記伝動ケース００内の変速伝動機構に設けら
れたブレーキ（５）に連動するアウターワイヤー（至）
の係止具−を設け、この係止具（至）には、前記口−ラ
ー（至）に係合するカム部（３６ａ）を有した連動杆（
至）を枢着し、この連動杆（至）と該ブレーキ（５）と
の間には、該アウターワイヤー（ロ）に挿通して該連動
杆（至）の下方回動で該ブレーキ（５）を制動側にさせ
るインナーワイヤー■を設ける。Further, above the pin (to) of this gear shift lever (11), a roller (to) of a pivotally supported brake interlocking mechanism (6) is provided to protrude rearward, and the upper end of the clutch actuating plate (7) At the rear, there is an outer wire (to) that is linked to the brake (5) provided in the speed change transmission mechanism inside the transmission case 00.
A locking device is provided, and this locking device has an interlocking rod (36a) that has a cam portion (36a) that engages with the opening.
The outer wire (B) is inserted between the interlocking rod (H) and the brake (5), and when the interlocking rod (H) is rotated downward, the brake (5) ) is installed on the braking side.
第４図は変速レバー（１）の回動操作を案内するガイド
（至）を示し、（イ）は変速レバー（１）を前進側へ案
内する前進ガイド溝、（ロ）は変速レバー（１）を中立
位置で横方向へ案内する中立ガイド溝、（ハ）は変速レ
バー（１）を後進側へ案内する後進ガイド溝である。Figure 4 shows the guide (to) that guides the rotation operation of the speed change lever (1), (a) is the forward guide groove that guides the speed change lever (1) to the forward side, and (b) is the guide (to) that guides the rotation operation of the speed change lever (1). ) is a neutral guide groove that guides the shift lever (1) laterally in the neutral position, and (c) is a reverse guide groove that guides the gear shift lever (1) to the reverse side.
なお、凶は足踏操作でアーム（至）、ロッド（５）及び
アーム（至）を介してクラッチ（２）を切側にするフー
トペタル、（至）は前輪（図示せず）を操舵する操舵ハ
ンドル、（至）は後輪０１０１の上方を覆うフェンダ−
である。In addition, the foot pedal is used to turn the clutch (2) into the disengaged side via the arm (to), rod (5) and arm (to) by foot pedal operation, and the steering (to) is to steer the front wheels (not shown). The handle, (to) the fender that covers the upper part of the rear wheel 0101
It is.
次に作用について説明する。変速レバー（１）をガイド
（至）の中立ガイド溝（ロ）から前進ガイド溝（イ）に
沿い前方へ回動操作すると、クラッチ作動板（７）の回
動に伴い突起Ｇυが係合ローラー（３）を下方へ移動さ
せるため、揺動杆（１，調節ボルト翰及び連動杆（ｌｔ
ｌ、さらにシフトアーム（■を介して摺動体（至）を前
方摺動させてクラッチ（２）を切側にした後、変速レバ
ー（１）は、クラッチ作動板（７）、変速軸２４を介し
て変速伝動機構を前進１速にすると共に、突起０υとの
係合が解除される係合ローラーＧＢの上方復元によって
クラッチ（２）を入側にさせる。又さらに変速レバー１
１１を前方へ回動操作することによって、前記と同じ作
用で漸次前進高速側に変速され。Next, the effect will be explained. When the gear shift lever (1) is rotated forward along the forward guide groove (A) from the neutral guide groove (B) of the guide (to), the protrusion Gυ moves into the engagement roller as the clutch actuation plate (7) rotates. (3) In order to move the
After further sliding the sliding body (to) forward via the shift arm (■) to turn the clutch (2) to the disengaged side, the gear shift lever (1) moves the clutch actuating plate (7) and the gear shift shaft 24. Through this, the transmission mechanism is set to the first forward speed, and the engagement roller GB is disengaged from the protrusion 0υ and restored upward, thereby moving the clutch (2) to the input side.
By rotating 11 forward, the speed is gradually changed to the forward high speed side with the same effect as described above.
文通に変速レバー（１）を後方へ回動操作することによ
って前進高速側から漸次低速側に変速され、変速レバー
（１）が中立ガイド溝（ロ）に位置することによって変
速は中立状態になる。By rotating the speed change lever (1) backwards, the speed is gradually changed from the forward high speed side to the low speed side, and when the speed change lever (1) is positioned in the neutral guide groove (b), the speed changes to the neutral state. .
次に変速レバー（１）を中立ガイド溝（ロ）上で横方向
へ回動操作すると、変速レバーｆｉｌのローラー（至）
が連動杆（至）のカム部（３６ａ）を押圧するため、連
動杆（至）が下方回動してインナーワイヤー（５）を引
張ることによってブレーキ（５）を制動させ、ついで変
速レバー（１）を後進ガイド（ハ）に沿い後方へ回動操
作することによって後進に切替られると共に、クラッチ
（２）を入側にさせる。Next, when the shift lever (1) is rotated laterally on the neutral guide groove (B), the roller of the shift lever fil (to)
presses the cam part (36a) of the interlocking rod (to), so the interlocking rod (to) rotates downward and pulls the inner wire (5) to apply the brake (5), and then the shift lever (1) ) is rotated rearward along the reverse guide (c) to switch to reverse and move the clutch (2) to the entry side.
第５図は別の実施例を示すもので、前記クラッチ作動板
（７）の後方に１機体に支持された左右方向の支軸（支
）を設け、この支軸（支）には、前端部に前記係合ロー
ラー（３）の上方に位置する係合ローラー（至）を有し
たアーム（至）と、上方に向けて突出するアームとから
なるアーム体（至）を回動自在に設け、このアーム体（
至）の上端部には、当該アーム体（至）の前方回動で前
記ブレーキ（５）を作動させるスプリング（至）を張設
し、又前記クラッチ作動板（８）には、当該作動板（７
）の中立位置から後進側への回動によって、前記係合ロ
ーラー（至）を下方へ移動させる突起−を有したカム体
（至）を設ける。FIG. 5 shows another embodiment, in which a support shaft (support) in the left and right direction supported by one body is provided behind the clutch actuating plate (7), and this support shaft (support) has a front end An arm body (to) consisting of an arm (to) having an engagement roller (to) located above the engagement roller (3) and an arm projecting upward is rotatably provided in the part. , this arm body (
A spring (to) that operates the brake (5) by forward rotation of the arm body (to) is provided on the upper end of the arm body (to), and a spring (to) that operates the brake (5) by forward rotation of the arm body (to) is attached to the clutch actuation plate (8). (7
) is provided with a cam body having a protrusion that moves the engagement roller downward by rotation from the neutral position to the reverse side.
このような構成にしても前記と同様に中立位置から後進
への切替時にブレーキ（２）が作動することになる。Even with such a configuration, the brake (2) will be activated when switching from the neutral position to reverse, as described above.
図はこの発明の実施例を示すもので、第１図は側面図、
第２図は一部の側面図、第３図はその正面図、第４図は
一部の平面図、第５図は別実施例の一部の側面図である
。
図中、符号（１）は変速レバー、（２）はクラッチ、（
４）はクラッチ連動機構、（５）はブレーキ、（６）は
ブレーキ連動機構を示す。The figures show an embodiment of the invention, and Figure 1 is a side view;
2 is a partial side view, FIG. 3 is a front view thereof, FIG. 4 is a partial plan view, and FIG. 5 is a partial side view of another embodiment. In the figure, code (1) is the gear lever, (2) is the clutch, (
4) shows a clutch interlocking mechanism, (5) shows a brake, and (6) shows a brake interlocking mechanism.
Claims (1)
、該中立位置から後進側に切替しうる変速伝動機構と、
この変速伝動機構への伝動を断続しうるクラッチ（２）
と、このクラッチ（２）を変速レバー（１）の回動操作
で切側にすると共に、該変速伝動機構を変速作動させた
後、該クラッチ（２）を入側にするクラッチ連動機構（
４）と、該変速伝動機構を制動しうるブレーキ（５）と
を有した農用車輌において、前記変速レバー（１）と該
ブレーキ（５）との間に、当該変速レバー（１）の前記
中立位置から後進側への操作で該ブレーキ（５）を制動
側にさせて後進切替後、この制動を解除しうるブレーキ
連動機構（６）を設けたことを特徴とする農用車輌の変
速操作装置。A speed change transmission mechanism capable of shifting from a neutral speed position to a plurality of forward speeds, and also capable of switching from the neutral position to a reverse speed side;
Clutch (2) that can intermittent transmission to this variable speed transmission mechanism
Then, the clutch (2) is turned to the disengaged side by rotating the shift lever (1), and after the shift transmission mechanism is operated to change the speed, the clutch interlocking mechanism (2) is set to the engaged side.
4) and a brake (5) capable of braking the speed change transmission mechanism, wherein the neutral position of the speed change lever (1) is provided between the speed change lever (1) and the brake (5). A gear shift operating device for an agricultural vehicle, characterized in that it is provided with a brake interlocking mechanism (6) capable of switching the brake (5) to the braking side by operating it from the reverse position to the reverse side, and then releasing this braking after switching to reverse.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20052988A JPH0248236A (en) | 1988-08-10 | 1988-08-10 | Speed changing operation of agricultural vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20052988A JPH0248236A (en) | 1988-08-10 | 1988-08-10 | Speed changing operation of agricultural vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0248236A true JPH0248236A (en) | 1990-02-19 |
Family
ID=16425823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20052988A Pending JPH0248236A (en) | 1988-08-10 | 1988-08-10 | Speed changing operation of agricultural vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0248236A (en) |
-
1988
- 1988-08-10 JP JP20052988A patent/JPH0248236A/en active Pending
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