JPH02193721A - Walking type farming machine - Google Patents
Walking type farming machineInfo
- Publication number
- JPH02193721A JPH02193721A JP1012773A JP1277389A JPH02193721A JP H02193721 A JPH02193721 A JP H02193721A JP 1012773 A JP1012773 A JP 1012773A JP 1277389 A JP1277389 A JP 1277389A JP H02193721 A JPH02193721 A JP H02193721A
- Authority
- JP
- Japan
- Prior art keywords
- main clutch
- lever
- pin
- clutch lever
- operated
- 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.)
- Granted
Links
- 238000009313 farming Methods 0.000 title 1
- 230000005540 biological transmission Effects 0.000 claims description 21
- 230000002265 prevention Effects 0.000 abstract 1
Landscapes
- Gear-Shifting Mechanisms (AREA)
- Mechanical Control Devices (AREA)
- Control Of Transmission Device (AREA)
- Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はテーラ−等の歩行型農作業機において、特に走
行系の変速構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a walking type agricultural machine such as a Taylor, particularly to a transmission structure of a traveling system.
歩行型農作業機においては前後進共に複数段に変速可能
な走行用の第１変速装置を備えているが、作業走行時の
負荷変動に基づき僅かに変速操作したいような場合に対
応できるように、主クラッチの切操作を行わなくても高
低２段に切換可能な第２変速装置を主クラッチと直列に
配置しているものがある。従って、ある速度での作業走
行中において負荷が大きくなってきた場合には、この第
２変速装置を低速側に操作するとエンジン停止等の事態
が防止できるのである。Walking-type agricultural machines are equipped with a first transmission for traveling that can be shifted to multiple speeds in both forward and backward directions, but in order to handle cases where it is desired to perform slight gear shifting operations based on load fluctuations during work traveling. Some transmissions have a second transmission device arranged in series with the main clutch, which can shift between two high and low gears without disengaging the main clutch. Therefore, if the load becomes large while the vehicle is running at a certain speed, operating the second transmission to the lower speed side can prevent situations such as engine stoppage.
前述の第２変速装置は主クラッチの切操作を必要としな
い為に素早い切換操作が可能となるのであるが、特に作
業走行中において第２変速装置を高速側から低速側に切
換操作した場合に、機体が大きく揺れるような現象が生
ずることがあった。The aforementioned second transmission does not require the main clutch to be disengaged, so it is possible to perform quick switching operations, but this is especially true when the second transmission is switched from the high speed side to the low speed side while driving. , a phenomenon that caused the aircraft to shake violently occurred.
これは、第２変速装置を低速側に切換操作すると減速比
が大きくなって急激にエンジンブレ−キが働いたような
状態となる為であり、特に１本の軸の左右に走行用の車
輪を備えたような走行系を持つ歩行型農作業機において
、揺れは激しいものとなる。This is because when the second transmission is switched to the low speed side, the reduction ratio becomes large and the engine brake suddenly acts. In walk-behind agricultural machines with running systems equipped with such systems, the shaking can be severe.
ここで本発明は前述のような状態に着目してなされたも
のであり、第２変速装置を低速側に操作した場合の揺れ
現象を防止することを目的としている。Here, the present invention has been made with attention to the above-mentioned situation, and an object of the present invention is to prevent the shaking phenomenon when the second transmission is operated to the low speed side.
本発明の特徴は歩行型農作業機において、主クラッチの
切操作なく高低２段に切換操作可能な走行用の変速装置
を前記主クラッチと直列に設け、前記変速装置を切換操
作する変速レバーを高速位置から低速位置に操作すると
、これに連動してクラッチ入り位置の主クラッチレバ−
を自動的にクラッチ切り位置に操作する連係機構を備え
るとともに、この連係機構を前記変速レバーの位置に関
係なく主クラッチレバ−の独立式切り操作を許容する一
方向連動構造に構成してあることにあり、その作用及び
効果は次のとおりである。The present invention is characterized in that, in a walk-behind agricultural machine, a transmission for traveling that can be switched between two high and low gears without disengaging the main clutch is provided in series with the main clutch, and the gear shift lever for switching the transmission is moved to high speed. When the main clutch lever is operated from the low speed position to the low speed position, the main clutch lever in the clutch engaged position is
The main clutch lever is provided with an interlocking mechanism that automatically operates the main clutch lever to the clutch disengaged position, and this interlocking mechanism is configured to have a one-way interlocking structure that allows independent disengagement of the main clutch lever regardless of the position of the gear shift lever. Its functions and effects are as follows.
前述のように変速装置の変速レバーを低速側に切換操作
すると主クラッチも自動的に切操作される為に、エンジ
ンブレーキは働かないことになり、機体が激しく揺れた
りすることはない。As mentioned above, when the gear shift lever of the transmission is operated to the low speed side, the main clutch is also automatically disengaged, so the engine brake is not activated and the aircraft does not shake violently.
そして、この主クラツチ切操作時において走行抵抗等に
より機体は減速するので、その後に主クラッチを入操作
してもエンジンブレーキの働きは弱く機体の揺れは少な
い。When the main clutch is disengaged, the aircraft decelerates due to running resistance, so even if the main clutch is subsequently engaged, the effect of the engine brake is weak and the aircraft does not shake much.
さらに、変速装置の位置に関係なく主クラッチは独立に
大切操作が行えるので、通常の操作に支障をきたすもの
ではない。Furthermore, the main clutch can be operated independently regardless of the position of the transmission, so it does not interfere with normal operation.
以上のように、変速装置を低速側に切換操作した場合の
機体の揺れを少なくすることができるようになって、作
業走行時の快適性及び安全性を向上させることができた
。As described above, it has become possible to reduce the shaking of the machine body when the transmission is switched to the low speed side, and it has been possible to improve comfort and safety during work driving.
以下、本発明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４図に示すように、走行用のミッションケース（１）
より前方に延出されたフレーム（２）にエンジン（３）
を搭載す′ると共に、ミッションケース（１）の側面か
ら下方に延出された伝動ケース（８）に走行用の車輪（
４）を備え、ミッションケース（１）の上部に操縦ハン
ドル（５）、ミッションケース（１）の後部に作業装置
（図示せず）等の連結用のブラケット（６）を備えて歩
行型農作業機を構成している。As shown in Figure 4, the transmission case for driving (1)
The engine (3) is attached to the frame (2) that extends further forward.
In addition, running wheels (
4), a control handle (5) on the top of the mission case (1), and a bracket (6) for connecting a working device (not shown), etc. on the rear of the mission case (1). It consists of
この歩行型農作業機においては主クラッチ（７）、前後
進共に各々複数段に変速可能な走行用の第１変速装置（
図示せず）、及び主クラッチ（７）の切操作を行わなく
ても高低２段に切換操作可能な走行用の第２変速装置（
図示せず）を備えており、各々が直列に配置してある。This walk-behind agricultural machine has a main clutch (7) and a first transmission device (1) for traveling that can be shifted to multiple speeds in both forward and backward directions.
(not shown), and a second transmission for driving (not shown) that can be switched between two high and low gears without disengaging the main clutch (7).
(not shown), each of which is arranged in series.
次に、主クラッチ（７）及び第２変速装置の操作系の構
造について詳述すると第１図及び第３図に示すように、
操縦ハンドル（５）は平面視で閉ループ状に形成してあ
り、主クラッチ（７）とワイヤ（９）を介して連動連結
された門型の主クラッチレバ−（１０）が、操縦ハンド
ル（５）の横軸芯（Ｐｌ）周りに揺動操作自在に取り付
けられている。そして、主クラッチレバ−（１０）の近
くに、第２変速装置用の変速レバー（１１）が横軸芯（
Ｐ２）周りに揺動操作自在に取り付けられ、この変速し
／＜−（１１）と第２変速装置とがワイヤ（１２）を介
して連動連結されている。Next, the structure of the main clutch (7) and the operation system of the second transmission will be described in detail, as shown in FIGS. 1 and 3.
The steering handle (5) is formed into a closed loop shape in a plan view, and a gate-shaped main clutch lever (10) interlockingly connected to the main clutch (7) via a wire (9) is attached to the steering handle (5). ) is attached so as to be swingable around the horizontal axis (Pl). And, near the main clutch lever (10), a speed change lever (11) for the second transmission device is mounted on the horizontal axis (
P2) is swingably mounted around the gearbox P2), and this gearshift device /<- (11) and a second gearshift device are interlocked and connected via a wire (12).
そして、第１図及び第２図に示すように主クラッチレバ
−（１０）には、その先端が傾斜面に形成された第１ピ
ン（１３）が固定されると共に、変速レバー（１１）に
も先端が傾斜面に形成された第２ピン（１４）が取り付
けられている。そして、この第２ピン（Ｉ４）は紙面左
右方向に出退自在であり、且つ、スプリング（１５）に
より突出側（紙面左方）に付勢されている。As shown in FIGS. 1 and 2, a first pin (13) whose tip end is formed into an inclined surface is fixed to the main clutch lever (10), and the first pin (13) is fixed to the gear shift lever (11). A second pin (14) whose tip end is formed into an inclined surface is also attached. The second pin (I4) is movable in the left and right directions in the drawing, and is urged toward the protruding side (to the left in the drawing) by a spring (15).
以上の構造により、第２図に示すように主クラッチレバ
−（１０）を入位置に操作した状態で変速レバー（１１
）を高速位置（Ｈ）に操作して行くと、第２ピン（１４
）は第１ピン（１３）に接当して退太し第１ピン（１３
）の裏側に入り込む。従って、第２図に示す状態から変
速レバー（１１）を低速位置（Ｌ）に操作すると、第２
ピン（１４）が第１ピン（１３）に接当して、主クラッ
チレバ−（１０）が切位置に戻し操作されて行く。With the above structure, as shown in Fig. 2, when the main clutch lever (10) is operated to the on position,
) to the high speed position (H), the second pin (14
) comes into contact with the first pin (13) and withdraws from the first pin (13).
) to get behind the scenes. Therefore, if the shift lever (11) is operated to the low speed position (L) from the state shown in FIG.
The pin (14) comes into contact with the first pin (13), and the main clutch lever (10) is returned to the disengaged position.
この場合、第２図に示すように主クラッチレバ−（１０
）の操作軌跡に対して変速レバー（１１）の操作軌跡を
、平行ではなく若干斜めに向くようにしてある。これに
より、第２図に示す状態から変速レバー（１１）を低速
位置（Ｌ）側に操作して行くと、主クラッチレバ−（１
０）に内装されるトラブル機構（図示せず）の死点（Ｄ
）を越えた付近で、変速レバー（１１）の第２ピン（１
４）が主クラッチレバ−（１０）の第１ピン（１３）よ
り離れる。その後、主クラッチレバ−（１０）はトラブ
ル機構の付勢力で自動的に切位置に戻るのである。そし
て、主クラッチレバ−（１０）を切位置、変速レバー（
１１）を低速位置（Ｌ）に操作した状態において第１ピ
ン（１３）及び第２ピン（１４）は互いに離れるのであ
る。In this case, the main clutch lever (10
) The operating locus of the gear shift lever (11) is not parallel to the operating locus of the shift lever (11), but is oriented slightly obliquely. As a result, when the gear shift lever (11) is operated to the low speed position (L) side from the state shown in Fig. 2, the main clutch lever (1
0) of the trouble mechanism (not shown) installed in the dead center (D
), the second pin (1
4) is separated from the first pin (13) of the main clutch lever (10). Thereafter, the main clutch lever (10) automatically returns to the disengaged position due to the biasing force of the trouble mechanism. Then, move the main clutch lever (10) to the off position and shift lever (
11) is operated to the low speed position (L), the first pin (13) and the second pin (14) are separated from each other.
そして、以上の構造により変速レバー（１１）を高速位
置（Ｈ）又は低速位置（Ｌ）のどちらに操作していても
、主クラッチレバ−（１０）を独立に入位置と切位置と
に亘り操作できるのである。With the above structure, regardless of whether the gear shift lever (11) is operated to the high speed position (H) or the low speed position (L), the main clutch lever (10) can be independently operated between the on position and the off position. It can be operated.
尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本・発明は添付図面の構
造に限定されるものではない。Note that although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
図面は本発明に係る歩行型農作業機の実施例を示し、第
１図は操縦ハンドルにおける主クラッチレバ−及び変速
レバー付近の全体平面図、第２図は主クラッチレバ−を
入位置、変速レバーを高速位置に操作している状態での
平面図、第３図は主クラッチレバ−を切位置、変速レバ
ーを低速位置に操作している状態での側面図、第４図は
歩行型農作業機の全体側面図である。
（７）・・・・・・主クラッチ、（１０）・・・・・・
主クラッチレバ−１（１１）・・・・・・変速レバー、
（Ｈ）・・・・・・高速位置、（Ｌ）・・・・・・低速
位置。The drawings show an embodiment of the walking agricultural machine according to the present invention, and FIG. 1 is an overall plan view of the vicinity of the main clutch lever and gear shift lever on the operating handle, and FIG. 2 shows the main clutch lever in the engaged position and the gear shift lever. Fig. 3 is a side view with the main clutch lever in the disengaged position and the gear shift lever in the low speed position; Fig. 4 is a walk-behind agricultural machine. FIG. (7)... Main clutch, (10)...
Main clutch lever 1 (11)... Speed lever,
(H)...High speed position, (L)...Low speed position.
Claims (1)
な走行用の変速装置を前記主クラッチ（７）と直列に設
け、前記変速装置を切換操作する変速レバー（１１）を
高速位置（Ｈ）から低速位置（Ｌ）に操作すると、これ
に連動してクラッチ入り位置の主クラッチレバー（１０
）を自動的にクラッチ切り位置に操作する連係機構を備
えるとともに、この連係機構を前記変速レバー（１１）
の位置に関係なく主クラッチレバー（１０）の独立入切
り操作を許容する一方向連動構造に構成してある歩行型
農作業機。A transmission for traveling that can be switched between two high and low gears without disengaging the main clutch (7) is provided in series with the main clutch (7), and a shift lever (11) for switching the transmission is placed in the high speed position ( H) to the low speed position (L), the main clutch lever (10
) is provided with a linkage mechanism that automatically operates the gearshift lever (11) to the clutch disengaged position, and this linkage mechanism is connected to the gearshift lever (11).
A walking agricultural working machine configured with a one-way interlocking structure that allows independent on/off operation of the main clutch lever (10) regardless of the position of the main clutch lever (10).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1012773A JPH0741801B2 (en) | 1989-01-20 | 1989-01-20 | Walk-behind farm work machine |
| KR1019900000734A KR940002589B1 (en) | 1989-01-20 | 1990-01-20 | Walking type forming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1012773A JPH0741801B2 (en) | 1989-01-20 | 1989-01-20 | Walk-behind farm work machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02193721A true JPH02193721A (en) | 1990-07-31 |
| JPH0741801B2 JPH0741801B2 (en) | 1995-05-10 |
Family
ID=11814725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1012773A Expired - Lifetime JPH0741801B2 (en) | 1989-01-20 | 1989-01-20 | Walk-behind farm work machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0741801B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225930U (en) * | 1985-07-29 | 1987-02-17 |
-
1989
- 1989-01-20 JP JP1012773A patent/JPH0741801B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6225930U (en) * | 1985-07-29 | 1987-02-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0741801B2 (en) | 1995-05-10 |
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