JP3407061B2 - Agricultural work vehicle - Google Patents
Agricultural work vehicleInfo
- Publication number
- JP3407061B2 JP3407061B2 JP18086693A JP18086693A JP3407061B2 JP 3407061 B2 JP3407061 B2 JP 3407061B2 JP 18086693 A JP18086693 A JP 18086693A JP 18086693 A JP18086693 A JP 18086693A JP 3407061 B2 JP3407061 B2 JP 3407061B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- shaft
- gear
- main
- sub
- 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
- Soil Working Implements (AREA)
- Arrangement Of Transmissions (AREA)
Description
【発明の詳細な説明】
【０００１】
【産業上の利用分野】本発明は例えばロータリ作業機を
装備させて耕耘作業などを行う農用作業車に関する。
【０００２】
【従来の技術】従来、実開昭５９−１９６７５５号公報
に示す如く、ミッションケース上側に軸支させる入力軸
の一側に入力プーリを設け、主変速ギヤ及び２段の前進
ギヤを介して主変速軸を入力軸に連結させると共に、３
段の副変速ギヤ及び出力ギヤを介して副変速軸を主変速
軸に連結させる技術がある。
【０００３】
【発明が解決しようとする課題】前記従来技術は、主変
速用のフォーク軸を２本設け、二組のフォークと主変速
ギヤの切換を行っているから、入力軸に対して副変速軸
が離間して配置され、入力軸と副変速軸の軸間距離を縮
少し得ず、例えば下側に車輪を装設させるミッションケ
ースの上側に主及び副変速用のギヤをコンパクトに配置
し得ず、両側に車輪を設けて前側にエンジンを設けるミ
ッションケースの背面側を利用して主及び副変速操作具
を設ける必要があり、ミッションケース上側に設ける操
向ハンドルの方向転換またはロータリ作業機の取付など
が制限される等の不具合がある。
【０００４】
【課題を解決するための手段】然るに、本発明は、ミッ
ションケース上側に軸支させる入力軸の一側に入力プー
リを設け、主変速ギヤ及び２段の前進ギヤを介して主変
速軸を入力軸に連結させると共に、３段の副変速ギヤ及
び出力ギヤを介して副変速軸を主変速軸に連結させる農
用作業車において、主変速ギヤを切換える主変速フォー
ク軸と、副変速軸の軸芯孔に内挿させて副変速ギヤを切
換える副変速フォーク軸の各操作部を、ミッションケー
スの側面で入力プーリの設置範囲内に突設させると共
に、前記副変速軸の中間に副変速出力用の輪体を設け、
副変速軸の一方の側部に片寄らせて前進ギヤを設け、副
変速軸のもう一方の側部に片寄らせて副変速ギヤを設け
るもので、ミッションケースと入力プーリの間で入力プ
ーリの設置高さに主変速及び副変速用の各フォーク軸の
操作部をコンパクトに配置し得ると共に、前記輪体を挾
んで副変速軸の両側に主変速用のギヤと副変速用のギヤ
を分けてコンパクトに配置し得、主変速軸と副変速軸の
軸間距離を従来よりも短縮し得、例えばエンジンと作業
機を前後に設けかつ左右に走行輪を設けるミッションケ
ースの上側に主及び副変速軸をコンパクトに内設し得、
例えば主変速の前進２速と副変速の３速の切換によって
後進が３速になる変速構造を容易に得られ、しかも操向
ハンドル及び主変速レバーを前後に振換え可能な構造を
容易に得られ、変速操作を煩雑にすることなく後進作業
性の向上などを行い得るものである。
【０００５】
【実施例】以下、本発明の実施例を図面に基づいて詳述
する。図１は副変速機構部の説明図、図２は管理機の側
面図、図３は同平面図、図４はミッションケース上部説
明図、図５は同下部説明図、図６は主変速機構部の説明
図、図７はミッションケース上部側面図であり、図中
（１）はエンジン、（２）は前記エンジン（１）を載せ
るエンジン台、（３）は前記エンジン台（２）を前側に
固定させるミッションケース、（４）は前記ミッション
ケース（３）両側に車軸（５）を介して取付ける左右一
対の走行輪、（６）は前記ミッションケース（３）にヒ
ッチ（７）を介して牽引連結させるロータリ作業機、
（８）は前記ミッションケース（３）上部にハンドルベ
ース（９）を介して連設させる操向ハンドル、（１０）
は前記ミッションケース（３）に前後振換え自在に支持
させる主変速レバー、（１１）は前記操向ハンドル
（８）に設ける副変速レバー、（１２）は同左右一対の
サイドクラッチレバー、（１３）は走行クラッチレバー
であり、エンジン（１）の出力プーリ（１４）とミッシ
ョンケース（３）の入力プーリ（１５）の間に走行クラ
ッチテンションローラ（１６）を介して駆動ベルト（１
７）を張設させ、エンジン（１）出力をミッションケー
ス（３）に伝達させると共に、ロータリ作業機（６）の
ロータリ爪（１８）を回転させて耕耘作業を行わせるよ
うに構成している。
【０００６】さらに、図４、図６、図７に示す如く、入
力プーリ（１５）及び主変速ギヤ（１９）及びＰＴＯ出
力プーリ（２０）を設ける入力軸（２１）と、シフトフ
ォーク（２２）を介して主変速ギヤ（１９）を摺動させ
るフォーク軸（２３）と、後進ギヤ（２４）を設けるカ
ウンタ軸（２５）と、前進１速及び２速ギヤ（２６）
（２７）を設ける主変速軸（２８）をミッションケース
（３）に軸支させ、主変速軸（２８）に遊転軸支させる
１速ギヤ（２６）をカウンタ軸（２５）にカウンタギヤ
（２９）（３０）を介して連結させ、カウンタ軸（２
５）を主変速軸（２８）にカウンタギヤ（３１）（３
２）を介して連結させ、前進２段後進１段の主変速機構
（３３）を形成するもので、フォーク軸（２３）にシフ
トアーム（３４）を介して主変速レバー（１０）を連結
させ、後進ギヤ（２４）または１速ギヤ（２６）または
２速ギヤ（２７）に変速ギヤ（１９）を択一噛合させる
主変速レバー（１０）操作を行うように構成している。
【０００７】さらに、図１、図４、図６に示す如く、ボ
ールクラッチ（３５）（３６）（３７）を介して係脱自
在に低中高速用ギヤ（３８）（３９）（４０）を設ける
副変速軸（４１）をミッションケース（３）に軸支さ
せ、前記各ギヤ（３８）〜（４０）を主変速軸（２８）
の低中高速出力ギヤ（４２）（４３）（４４）に常時噛
合させると共に、副変速軸（４１）の軸芯位置にフォー
ク軸（４５）を摺動自在に内挿させ、各ボールクラッチ
（３５）〜（３７）を択一係合動作させるシフタ（４
６）をフォーク軸（４５）に設け、低中高速用３段の副
変速機構（４７）を形成するもので、フォーク軸（４
５）を軸芯方向に摺動させてシフタ（４６）を変位さ
せ、各ボールクラッチ（３５）〜（３７）を介して低中
高速用ギヤ（３８）〜（４０）を副変速軸（４１）に択
一係合させ、低速、中速、高速の出力切換を行うように
構成している。
【０００８】さらに、図１、図４、図７、図８、図９に
示す如く、前記フォーク軸（４５）の一端側に圧縮バネ
（４８）を巻装させ、フォーク軸（４５）の他端部をミ
ッションケース（３）外側方に出入自在に突設させると
共に、円筒形の固定カム（４９）と回転カム（５０）を
備え、ミッションケース（３）に回り止めピン（５１）
を介して固定カム（４９）を取付け、固定カム（４９）
中心部を遊嵌挿通させるフォーク軸（４５）端部にネジ
（５２）及びナット（５３）を介して回転カム（５０）
を回転自在に取付けるもので、回転カム（５０）に一体
固定させる副変速アーム（５４）を副変速レバー（１
１）に副変速ワイヤ（５５）を介して連結させ、また前
記アーム（５４）に戻りバネ（５５ａ）を連結させると
共に、多段的に形成する固定カム（４９）の低中高速カ
ムフロア平坦面（５６）（５７）（５８）に回転カム
（５０）のカム平坦面（５９）を対向させ、副変速レバ
ー（１１）操作によって回転カム（５０）をフォーク軸
（４５）回りに回転させ、低中高速カムフロア平坦面
（５６）〜（５８）のいずれかにカム平坦面（５９）を
択一当接させ、圧縮バネ（４８）に抗してフォーク軸
（４５）を進出させ、また前記バネ（４８）によってフ
ォーク軸（４５）を退入させ、前記シフタ（４６）によ
る低中高速の出力切換を行わせるように構成している。
【０００９】さらに、図４、図５、図７に示す如く、前
記副変速軸（４１）にスプロケット（６０）を一体形成
し、またボールクラッチ型サイドクラッチ（６１）（６
２）を介して車軸（５）にスプロケット（６３）を軸支
させ、各スプロケット（６０）（６３）をチェン（６
４）によって連結させると共に、サイドクラッチ（６
１）（６２）をバネ（６５）（６６）に抗して切操作す
るサイドクラッチアーム（６７）（６７）を設け、前記
サイドクラッチレバー（１２）にサイドクラッチワイヤ
（６８）を介してサイドクラッチアーム（６７）を連結
させ、前記レバー（１２）操作によってサイドクラッチ
（６１）（６２）を切動作させるように構成している。
【００１０】上記から明らかなように、ミッションケー
ス（３）上側に軸支させる入力軸（２１）の一側に入力
プーリ（１５）を設け、主変速ギヤ（１９）及び２段の
前進ギヤである１速及び２速ギヤ（２６）（２７）を介
して主変速軸（２８）を入力軸（２１）に連結させると
共に、３段の副変速ギヤである低中高速用ギヤ（３８）
〜（４０）及び低中高速出力ギヤ（４２）〜（４４）を
介して副変速軸（４１）を主変速軸（２８）に連結させ
る農用作業車において、主変速ギヤ（１９）を切換える
主変速フォーク軸（２３）と、副変速軸（４１）の軸芯
孔に内挿させて低中高速用ギヤ（３８）〜（４０）を切
換える副変速フォーク軸（４５）の各操作部を、ミッシ
ョンケース（３）の側面で入力プーリ（１５）の設置範
囲内に突設させると共に、前記副変速軸（４１）の中間
に副変速出力用の輪体であるスプロケット（６０）を設
け、副変速軸（４１）の一方の側部に片寄らせて前進１
速及び２速ギヤ（２６）（２７）を設け、副変速軸（４
１）のもう一方の側部に片寄らせて低中高速用ギヤ（３
８）〜（４０）を設ける。そして、ミッションケース
（３）と入力プーリ（１５）の間で入力プーリ（１５）
の設置高さに主変速及び副変速用の各フォーク軸（２
３）（４５）の操作部をコンパクトに配置させると共
に、前記スプロケット（６０）を挾んで副変速軸（４
１）の両側に主変速用の１速及び２速ギヤ（２６）（２
７）と副変速用の低中高速用ギヤ（３８）〜（４０）を
分けてコンパクトに配置させ、主変速軸（２８）と副変
速軸（４１）の軸間距離を従来よりも短縮させ、例えば
エンジン（１）と作業機（６）を前後に設けかつ左右に
走行輪（４）を設けるミッションケース（３）の上側に
主及び副 変速軸（２８）（４１）をコンパクトに内設さ
せ、例えば主変速の前進２速と副変速の３速の切換によ
って後進が３速になる変速構造を容易に得られ、しかも
操向ハンドル（８）及び主変速レバー（１０）を前後に
振換え可能な構造を容易に得られ、変速操作を煩雑にす
ることなく後進作業性の向上などを行う。
【００１１】さらに、図１０に示す如く、バネ（６９）
によって出入自在に突出支持させるピン（７０）を前記
車軸（５）にケース（７１）を介して埋込み、走行輪
（４）のボス（７２）に車軸（５）を内挿時、ボス（７
２）の抜止め孔（７３）にピン（７０）が係入保持され
るように構成している。
【００１２】
【発明の効果】以上実施例から明らかなように本発明
は、ミッションケース（３）上側に軸支させる入力軸
（２１）の一側に入力プーリ（１５）を設け、主変速ギ
ヤ（１９）及び２段の前進ギヤ（２６）（２７）を介し
て主変速軸（２８）を入力軸（２１）に連結させると共
に、３段の副変速ギヤ（３８）〜（４０）及び出力ギヤ
（４２）〜（４４）を介して副変速軸（４１）を主変速
軸（２８）に連結させる農用作業車において、主変速ギ
ヤ（１９）を切換える主変速フォーク軸（２３）と、副
変速軸（４１）の軸芯孔に内挿させて副変速ギヤ（３
８）〜（４０）を切換える副変速フォーク軸（４５）の
各操作部を、ミッションケース（３）の側面で入力プー
リ（１５）の設置範囲内に突設させると共に、前記副変
速軸（４１）の中間に副変速出力用の輪体（６０）を設
け、副変速軸（４１）の一方の側部に片寄らせて前進ギ
ヤ（２６）（２７）を設け、副変速軸（４１）のもう一
方の側部に片寄らせて副変速ギヤ（３８）〜（４０）を
設けるもので、ミッションケース（３）と入力プーリ
（１５）の間で入力プーリ（１５）の設置高さに主変速
及び副変速用の各フォーク軸（２３）（４５）の操作部
をコンパクトに配置できると共に、前記輪体（６０）を
挾んで副変速軸（４１）の両側に主変速用のギヤ（２
６）（２７）と副変速用のギヤ（３８）〜（４０）を分
けてコンパクトに配置でき、主変速軸（２８）と副変速
軸（４１）の軸間距離を従来よりも短縮でき、例えばエ
ンジン（１）と作業機（６）を前後に設けかつ左右に走
行輪（４）を設ける ミッションケース（３）の上側に主
及び副変速軸（２８）（４１）をコンパクトに内設で
き、例えば主変速の前進２速と副変速の３速の切換によ
って後進が３速になる変速構造を容易に得ることがで
き、しかも操向ハンドル（８）及び主変速レバー（１
０）を前後に振換え可能な構造を容易に得ることがで
き、変速操作を煩雑にすることなく後進作業性の向上な
どを行うことができるものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an agricultural work vehicle equipped with, for example, a rotary work machine for tilling work. 2. Description of the Related Art Conventionally, Japanese Unexamined Utility Model Publication No. 59-196755 is disclosed.
As shown in the figure, the input shaft to be supported on the upper side of the transmission case
An input pulley is provided on one side, and the main transmission gear and two-step forward
The main transmission shaft is connected to the input shaft via a gear, and 3
Main transmission of the sub-transmission shaft via the sub-transmission gear and output gear of the gear
There is a technology to connect to the shaft . [0003] The above prior art is a major change.
Two fork shafts for speed, two forks and main transmission
Since the gears are switched, the auxiliary transmission shaft is
Are spaced apart to reduce the distance between the input shaft and the sub-transmission shaft.
Missing a little, for example, a mission
Gears for main and auxiliary transmission are compactly arranged above the gear
It is impossible to install the engine on the front side with wheels on both sides.
Main and auxiliary gearshift operation tools using the rear side of the case
It is necessary to provide
Turning the steering wheel or attaching a rotary work machine
Is limited . [0004] Means for Solving the Problems] However, the present invention provides mission
Input shaft on one side of the input shaft
And a main change gear through the main transmission gear and the two forward gears.
Connect the speed shaft to the input shaft, and
The auxiliary transmission shaft is connected to the main transmission shaft via the output gear
Gearbox for changing the main gear in a work vehicle
Gear and the auxiliary gear
Change the operation section of the sub transmission fork shaft
When the input side of the input pulley is
In the middle of the auxiliary transmission shaft, a sub-transmission output wheel is provided,
A forward gear is provided to be offset to one side of the sub-transmission shaft,
Auxiliary transmission gear is provided offset to the other side of the transmission shaft
Between the transmission case and the input pulley.
Of the fork shafts for the main transmission and sub transmission
The operating part can be arranged compactly, and the
Gears for the main transmission and the auxiliary transmission on both sides of the auxiliary transmission shaft
Can be separated and compactly arranged, and the main transmission shaft and sub transmission shaft
The distance between shafts can be shorter than before, for example, when working with the engine
Mission cage with front and rear machines and running wheels on left and right
The main and auxiliary transmission shafts can be installed compactly on the upper side of the base,
For example, by switching between the second forward speed of the main transmission and the third speed of the auxiliary transmission,
It is easy to obtain a speed change structure with 3 reverse speeds, and steering
A structure that allows the handle and main shift lever to be moved back and forth
Easy to obtain and reverse work without complicating shifting operations
It can improve the properties . Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 is an explanatory view of a sub-transmission mechanism, FIG. 2 is a side view of a control device, FIG. 3 is a plan view of the same, FIG. 4 is an explanatory view of a transmission case upper part, FIG. 5 is an explanatory view of a lower part thereof, and FIG. FIG. 7 is an upper side view of a transmission case, in which (1) is an engine, (2) is an engine mount on which the engine (1) is mounted, and (3) is a front side of the engine mount (2). A transmission case (4) is mounted on both sides of the transmission case (3) via an axle (5), and a pair of left and right running wheels is mounted. (6) is mounted on the transmission case (3) via a hitch (7). Rotary working machine to be connected by traction,
(8) a steering handle connected to the upper part of the transmission case (3) via a handle base (9); (10)
Is a main shift lever that is supported by the transmission case (3) so as to be able to swing back and forth, (11) is a sub shift lever provided on the steering handle (8), (12) is a pair of left and right side clutch levers, (13) ) Is a traveling clutch lever, which is provided between an output pulley (14) of the engine (1) and an input pulley (15) of the transmission case (3) via a traveling clutch tension roller (16).
7), the output of the engine (1) is transmitted to the transmission case (3), and the rotary pawl (18) of the rotary working machine (6) is rotated to perform the tilling operation. . Further, as shown in FIGS. 4, 6, and 7, an input shaft (21) provided with an input pulley (15), a main transmission gear (19) and a PTO output pulley (20), and a shift fork (22). , A fork shaft (23) that slides the main transmission gear (19), a counter shaft (25) provided with a reverse gear (24), and first and second forward gears (26).
The main transmission shaft (28) provided with (27) is supported on the transmission case (3), and the first speed gear (26) supported on the main transmission shaft (28) by idle rotation is connected to the counter shaft (25) by the counter gear (25). 29) and (30), and the counter shaft (2
5) is connected to the main transmission shaft (28) by the counter gears (31) and (3).
The main transmission lever (10) is connected to the fork shaft (23) via the shift arm (34) to form a main transmission mechanism (33) of two forward steps and one reverse step. The main transmission lever (10) is operated to selectively engage the transmission gear (19) with the reverse gear (24), the first gear (26) or the second gear (27). Further, as shown in FIGS. 1, 4, and 6, low, medium and high speed gears (38) (39) (40) are removably engaged via ball clutches (35) (36) (37). The auxiliary transmission shaft (41) provided is supported by the transmission case (3), and the gears (38) to (40) are connected to the main transmission shaft (28).
The gears (42), (43), and (44) are always meshed with each other, and the fork shaft (45) is slidably inserted into the axial center position of the sub-transmission shaft (41). A shifter (4) for selectively engaging one of 35) to (37).
6) is provided on the fork shaft (45) to form a three-stage auxiliary transmission mechanism (47) for low, medium and high speeds.
5) is slid in the axial direction to displace the shifter (46), and the low-, medium-, and high-speed gears (38) to (40) are moved to the auxiliary transmission shaft (41) via the ball clutches (35) to (37). ) To perform low-speed, medium-speed, and high-speed output switching. Further, as shown in FIGS. 1, 4, 7, 8, and 9, a compression spring (48) is wound around one end of the fork shaft (45), and the other end of the fork shaft (45) is The end is protruded to the outside of the transmission case (3) so as to be able to freely move in and out, and a cylindrical fixed cam (49) and a rotating cam (50) are provided.
The fixed cam (49) is attached via the fixed cam (49).
A rotary cam (50) is inserted through a screw (52) and a nut (53) into the end of a fork shaft (45) through which a central portion is loosely inserted.
The sub-transmission arm (54), which is integrally fixed to the rotating cam (50), is attached to the sub-transmission lever (1).
1) is connected via a sub-transmission wire (55), and a return spring (55a) is connected to the arm (54). 56) The flat cam surface (59) of the rotating cam (50) is opposed to (57) and (58), and the rotating cam (50) is rotated around the fork shaft (45) by operating the sub-transmission lever (11), and The cam flat surface (59) is selectively brought into contact with any of the medium to high speed cam floor flat surfaces (56) to (58), and the fork shaft (45) is advanced against the compression spring (48). The fork shaft (45) is retracted by (48) and low, medium and high speed output switching by the shifter (46) is performed. Further, as shown in FIGS. 4, 5 and 7, a sprocket (60) is formed integrally with the auxiliary transmission shaft (41), and a ball clutch type side clutch (61) (6) is formed.
The sprocket (63) is supported on the axle (5) via 2), and each sprocket (60) (63) is connected to the chain (6).
4) and the side clutch (6)
1) A side clutch arm (67) (67) for disengaging the (62) against the springs (65) and (66) is provided, and the side clutch lever (12) is connected to the side clutch wire (68) via a side clutch wire (68). The clutch arm (67) is connected, and the side clutches (61) and (62) are disengaged by operating the lever (12). As is clear from the above, the mission case
(3) Input to one side of the input shaft (21) to be supported on the upper side
A pulley (15) is provided, and a main transmission gear (19) and a two-stage
Via first and second speed gears (26) and (27) as forward gears
To connect the main transmission shaft (28) to the input shaft (21)
Low-, medium-, and high-speed gears (38), which are three-stage auxiliary transmission gears
To (40) and low, medium and high speed output gears (42) to (44)
The auxiliary transmission shaft (41) is connected to the main transmission shaft (28) through
The main transmission gear (19) in an agricultural work vehicle
Shaft cores of main transmission fork shaft (23) and sub transmission shaft (41)
Insert the gears into the holes and cut the low, medium and high speed gears (38) to (40).
Change the operating parts of the sub transmission fork shaft (45)
Of the input pulley (15) on the side of the housing case (3).
At the center of the auxiliary transmission shaft (41).
A sprocket (60), which is a wheel body for sub-transmission output,
And the forward shift 1 is shifted to one side of the sub-transmission shaft (41).
The second and third speed gears (26) and (27) are provided, and the auxiliary transmission shaft (4) is provided.
Offset the other side of 1) to the low, medium and high speed gear (3
8) to (40) are provided. And the mission case
Input pulley (15) between (3) and input pulley (15)
The fork shafts (2
3) When the operation unit of (45) is arranged compactly,
And the auxiliary transmission shaft (4) with the sprocket (60) interposed therebetween.
The first and second gears (26) and (2) for the main transmission are provided on both sides of 1).
7) and low, medium and high speed gears (38) to (40)
The main transmission shaft (28) and the sub-variable
The distance between the shafts of the fast shaft (41) is made shorter than before, and for example,
Engine (1) and work machine (6) are installed in front and back and left and right
On the upper side of the mission case (3) where the running wheels (4) are provided
The main and auxiliary transmission shafts (28) and (41) are compactly installed.
For example, by switching between the second forward speed of the main transmission and the third speed of the auxiliary transmission,
Therefore, it is possible to easily obtain a speed change structure in which the reverse travels in the third speed, and
Move the steering handle (8) and main shift lever (10) back and forth
A transferable structure can be easily obtained, making the shifting operation complicated.
Improve reverse workability without any problems. Further, as shown in FIG.
When the axle (5) is inserted into the boss (72) of the traveling wheel (4) through the case (71), the boss (7) is inserted into the axle (5).
The pin (70) is engaged and held in the retaining hole (73) of (2). As apparent from the above embodiments, the present invention provides an input shaft which is supported on the upper side of the transmission case (3).
(21) An input pulley (15) is provided on one side to
Gear (19) and two forward gears (26) (27)
When the main transmission shaft (28) is connected to the input shaft (21)
Three-stage auxiliary transmission gears (38) to (40) and an output gear
Main transmission of the auxiliary transmission shaft (41) via (42) to (44)
In the agricultural work vehicle connected to the shaft (28),
Main fork shaft (23) for switching gear (19),
The auxiliary transmission gear (3) is inserted into the shaft hole of the transmission shaft (41).
8) to (40) of the auxiliary speed change fork shaft (45)
Input buttons on the side of the mission case (3)
(15) and the sub-
An auxiliary transmission output wheel (60) is provided in the middle of the speed shaft (41).
And the forward gear is shifted to one side of the auxiliary transmission shaft (41).
Gears (26) and (27), and the other of the auxiliary transmission shaft (41).
And the auxiliary transmission gears (38) to (40)
The transmission case (3) and the input pulley
Main shift to the installation height of the input pulley (15) between (15)
And operation section of each fork shaft (23) (45) for auxiliary transmission
Can be arranged compactly, and the ring (60) can be
The main transmission gear (2) is placed on both sides of the subtransmission shaft (41).
6) Separate the (27) and the gears (38) to (40) for the subtransmission.
The main transmission shaft (28) and the auxiliary transmission
The distance between the shafts (41) can be made shorter than before, and
Engine (1) and work machine (6) are installed in front and back and run left and right
Mainly above the mission case (3) where the wheel (4) is provided
And the auxiliary transmission shafts (28) and (41)
For example, by switching between the second forward speed of the main transmission and the third speed of the auxiliary transmission.
Therefore, it is possible to easily obtain a shift structure in which the reverse travels in the third speed.
And the steering handle (8) and main shift lever (1
It is possible to easily obtain a structure in which 0) can be transferred back and forth.
And improve reverse workability without complicating shifting operations.
Etc. are those that can the line Ukoto.
【図面の簡単な説明】 【図１】副変速機構部の説明図。 【図２】管理機の側面図。 【図３】同平面図。 【図４】ミッションケース上部説明図。 【図５】同下部説明図。 【図６】主変速機構部の説明図。 【図７】ミッションケース上部側面図。 【図８】副変速カム部の分解図。 【図９】同展開説明図。 【図１０】車軸部の説明図。 【符号の説明】 （３） ミッションケース（１５） 入力プーリ （１９） 主変速ギヤ （２１） 入力軸 （２３） 主変速フォーク軸 （２６） １速ギヤ（前進ギヤ） （２７） ２速ギヤ（前進ギヤ） （２８） 主変速軸 （３８）〜（４０） 低中高速用ギヤ（副変速ギヤ） （４１） 副変速軸 （４５） 副変速フォーク軸（６０） スプロケット（副変速出力用の輪体） BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a subtransmission mechanism. FIG. 2 is a side view of the management device. FIG. 3 is a plan view of the same. FIG. 4 is an explanatory view of a transmission case upper part. FIG. 5 is an explanatory view of the lower part. FIG. 6 is an explanatory diagram of a main transmission mechanism. FIG. 7 is a top view of a transmission case. FIG. 8 is an exploded view of a sub speed change cam portion. FIG. 9 is a development explanatory view of the same. FIG. 10 is an explanatory view of an axle part. [Description of Signs] (3) Transmission case (15) Input pulley (19) Main transmission gear (21) Input shaft (23) Main transmission fork shaft (26) First gear (forward gear) (27) Second gear ( Forward gear) (28) Main transmission shaft (38) to (40) Low, medium and high speed gear ( sub transmission gear) (41) Sub transmission shaft (45) Sub transmission fork shaft (60) Sprocket (wheel for sub transmission output ) body)
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭55−10151（ＪＰ，Ａ) 実開 昭59−196755（ＪＰ，Ｕ) 実開 昭50−84675（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) A01B 33/08 B60K 17/08 F16D 15/00 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-55-10151 (JP, A) Fully open 1984-196755 (JP, U) Really open 50-84675 (JP, U) (58) Investigation Field (Int.Cl. 7 , DB name) A01B 33/08 B60K 17/08 F16D 15/00
Claims (1)
る入力軸（２１）の一側に入力プーリ（１５）を設け、
主変速ギヤ（１９）及び２段の前進ギヤ（２６）（２
７）を介して主変速軸（２８）を入力軸（２１）に連結
させると共に、３段の副変速ギヤ（３８）〜（４０）及
び出力ギヤ（４２）〜（４４）を介して副変速軸（４
１）を主変速軸（２８）に連結させる農用作業車におい
て、主変速ギヤ（１９）を切換える主変速フォーク軸
（２３）と、副変速軸（４１）の軸芯孔に内挿させて副
変速ギヤ（３８）〜（４０）を切換える副変速フォーク
軸（４５）の各操作部を、ミッションケース（３）の側
面で入力プーリ（１５）の設置範囲内に突設させると共
に、前記副変速軸（４１）の中間に副変速出力用の輪体
（６０）を設け、副変速軸（４１）の一方の側部に片寄
らせて前進ギヤ（２６）（２７）を設け、副変速軸（４
１）のもう一方の側部に片寄らせて副変速ギヤ（３８）
〜（４０）を設けることを特徴とする農用作業車。(57) [Claims] [Claim 1] The transmission case (3) is pivotally supported on the upper side.
An input pulley (15) is provided on one side of the input shaft (21).
The main transmission gear (19) and the two-stage forward gear (26) (2
7) the main transmission shaft (28) is connected to the input shaft (21) via
And the three-stage auxiliary transmission gears (38) to (40) and
And the auxiliary transmission shaft (4) via the output gears (42) to (44).
Agricultural work vehicle that connects 1) to the main transmission shaft (28)
Main fork shaft for switching the main transmission gear (19)
(23) and inserted into the shaft hole of the subtransmission shaft (41) to
Sub-transmission fork for switching transmission gears (38) to (40)
Connect each operation unit of the shaft (45) to the side of the transmission case (3).
Surface and within the installation range of the input pulley (15)
And a wheel body for outputting a sub-transmission in the middle of the sub-transmission shaft (41).
(60) is provided, and one side of the auxiliary transmission shaft (41) is offset.
And the forward gears (26) and (27) are provided to
Sub-shift gear (38) offset to the other side of 1)
To 40. An agricultural work vehicle comprising:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18086693A JP3407061B2 (en) | 1993-06-25 | 1993-06-25 | Agricultural work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18086693A JP3407061B2 (en) | 1993-06-25 | 1993-06-25 | Agricultural work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH078002A JPH078002A (en) | 1995-01-13 |
| JP3407061B2 true JP3407061B2 (en) | 2003-05-19 |
Family
ID=16090726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18086693A Expired - Lifetime JP3407061B2 (en) | 1993-06-25 | 1993-06-25 | Agricultural work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3407061B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005306180A (en) * | 2004-04-21 | 2005-11-04 | Mitsubishi Agricult Mach Co Ltd | Transmission of working vehicle |
| JP6467929B2 (en) * | 2015-01-14 | 2019-02-13 | 横浜ゴム株式会社 | Assembly tire |
-
1993
- 1993-06-25 JP JP18086693A patent/JP3407061B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH078002A (en) | 1995-01-13 |
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