JP3306498B2 - Agricultural work vehicle - Google Patents

Agricultural work vehicle

Info

Publication number
JP3306498B2
JP3306498B2 JP19274993A JP19274993A JP3306498B2 JP 3306498 B2 JP3306498 B2 JP 3306498B2 JP 19274993 A JP19274993 A JP 19274993A JP 19274993 A JP19274993 A JP 19274993A JP 3306498 B2 JP3306498 B2 JP 3306498B2
Authority
JP
Japan
Prior art keywords
transmission
clutch
reverse
switching
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 - Fee Related
Application number
JP19274993A
Other languages
Japanese (ja)
Other versions
JPH0723601A (en
Inventor
知 晋 野
原 裕 昭 貝
本 明 広 松
Original Assignee
ヤンマー農機株式会社
石川島芝浦機械株式会社
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 ヤンマー農機株式会社, 石川島芝浦機械株式会社 filed Critical ヤンマー農機株式会社
Priority to JP19274993A priority Critical patent/JP3306498B2/en
Publication of JPH0723601A publication Critical patent/JPH0723601A/en
Application granted granted Critical
Publication of JP3306498B2 publication Critical patent/JP3306498B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[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。
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.
【0002】[0002]
【従来の技術】従来、汎用管理機の走行ミッションにお
いて、前進及び後進切換を行う主変速機構と増減速切換
を行う副変速機構を備え、複数段の前進及び後進出力を
得る技術があった。
2. Description of the Related Art Conventionally, in a traveling mission of a general-purpose management machine, there has been a technique of providing a main transmission mechanism for performing forward / reverse switching and a sub-transmission mechanism for performing acceleration / deceleration switching to obtain a plurality of stages of forward / reverse output.
【0003】[0003]
【発明が解決しようとする課題】前記従来技術は、ロー
タリ爪を回転させて耕耘作業を行うロータリ作業機を装
着させた場合、耕耘作業中に後進させるには、走行クラ
ッチの切断、主変速の後進切換、ロータリ爪の停止、走
行クラッチの接続の各操作が必要であると共に、耕耘作
業に戻るには、走行クラッチの切断、主変速を作業速度
に切換、ロータリ爪の回転、走行クラッチの接続の各操
作が必要であり、耕耘作業中に機体を少し戻したいとき
でも操作が極めて面倒であり、ロータリ爪を停止させる
ことなく後進させ易い等の取扱い操作上の不具合があっ
た。なお、主変速機構の後進操作によってPTOクラッ
チが自動的に切断されてロータリ爪を停止させる従来技
術もあったが、該技術では、後進移動での耕耘作業を行
い得ず、例えば操向ハンドルを機体前方に振換えた姿勢
で作業を行える管理機の後進作業が制限される等の問題
があった。
According to the prior art, when a rotary work machine for performing a tilling operation by rotating a rotary claw is mounted, the traveling clutch can be disengaged and the main speed change can be performed during the tilling operation. Each operation of reverse switching, stopping the rotary pawl, and connecting the traveling clutch is necessary. To return to the tilling operation, disconnect the traveling clutch, switch the main speed to the working speed, rotate the rotary pawl, and connect the traveling clutch. Each operation is necessary, and even when it is necessary to return the body a little during the tilling operation, the operation is extremely troublesome, and there is a problem in handling operation such that the rotary claw is easily moved backward without stopping. In addition, there is a conventional technology in which the PTO clutch is automatically disengaged by the reverse operation of the main transmission mechanism to stop the rotary claw. However, in this technology, it is not possible to perform the plowing operation by the reverse movement, and for example, the steering wheel is moved. There is a problem that the backward movement of the management machine, which can perform the work in the posture shifted to the front of the aircraft, is restricted.
【0004】[0004]
【課題を解決するための手段】然るに、本発明は、前進
及び後進の切換を行う主変速機構と、増減速切換を行う
副変速機構を備える農用作業車において、主変速機構の
走行出力を逆転させる逆転切換手段を副変速機構に設け
ると共に、前記逆転切換手段による逆転出力操作と連動
させてPTO出力継断用PTOクラッチを切動作させる
連動部材を設けたもので、主変速機構の前進移動または
後進移動のいずれの場合でも、副変速機構の逆転切換手
段を介して逆方向に移動させ得ると共に、逆転切換手段
による逆方向移動時にPTOクラッチが自動的に切断さ
れ、農作業中に機体を少し戻したい操作を従来よりも簡
略化して取扱い操作性の向上並びに安全性の向上などを
容易に図り得、また主変速の後進切換によってPTO出
力を中止させる従来技術に比べ、主変速の前進切換時と
同様の作業を後進切換時にも容易に行い得るものであ
る。
SUMMARY OF THE INVENTION The present invention is directed to an agricultural work vehicle having a main transmission mechanism for switching between forward and reverse and an auxiliary transmission mechanism for switching between acceleration and deceleration. The auxiliary transmission mechanism is provided with an interlocking member for disengaging the PTO clutch for PTO output disconnection in conjunction with the reverse output operation by the reverse rotation switching means. In any case of the reverse movement, the vehicle can be moved in the reverse direction via the reverse rotation switching means of the auxiliary transmission mechanism, and the PTO clutch is automatically disengaged during the reverse movement by the reverse rotation switching means, and the aircraft is slightly returned during the agricultural work. Operation can be simplified as compared with the conventional case, and handling operability and safety can be easily improved. Compared to techniques in which the forward switching and similar work of the main transmission can be easily performed to the reverse switching.
【0005】[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PTOクラッチ部の説明図、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。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an explanatory view of a PTO clutch section, FIG. 2 is a side view of a management machine, FIG. 3 is a plan view of the same, FIG. 4 is an explanatory view of an upper portion of a transmission case, 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 an engine mount (2) on the front side. A transmission case to be fixed, (4) is a pair of right and left running wheels mounted on both sides of the transmission case (3) via an axle (5), and (6) is towed to the transmission case (3) via a hitch (7). Rotary work machine to be connected,
(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. .
【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)を軸芯上に設ける入力軸(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(25)を主変速軸(28)にカウンタギヤ(31)
(32)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。
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) on a shaft core.
A fork shaft (23) for sliding a main transmission gear (19) via a shift fork (22), a counter shaft (25) provided with a reverse gear (24), forward first and second speed gears (26) ( 27), the main transmission shaft (28) is rotatably supported by the transmission case (3), and the first speed gear (26) rotatably supported by the main transmission shaft (28) is mounted on the counter shaft (25) by the counter gear (29). ) (30), the counter shaft (25) is connected to the main transmission shaft (28) by the counter gear (31).
(32) to form a main transmission mechanism (33) having two forward steps and one reverse step. The main transmission lever (10) is connected to the fork shaft (23) via a shift arm (34). The main transmission lever (10) is operated to selectively engage the transmission gear (19) with the reverse gear (24) or the first gear (26) or the second gear (27).
【0007】さらに、図4、図6、図7に示す如く、ボ
ールクラッチ(35)(36)(37)(38)を介し
て係脱自在に低中高速用ギヤ(39)(40)(41)
及び逆転スプロケット(42)を設ける副変速軸(4
3)をミッションケース(3)に軸支させ、前記各ギヤ
(39)〜(41)を主変速軸(28)の低中高速出力
ギヤ(44)(45)(46)に常時噛合させ、また主
変速軸(28)の逆転出力スプロケット(47)に逆転
切換手段である逆転チェン(48)を介して逆転スプロ
ケット(42)を常時連結させると共に、副変速軸(4
3)の軸芯位置にフォーク軸(49)を摺動自在に内挿
させ、各ボールクラッチ(35)〜(38)を択一係合
動作させるシフタ(50)をフォーク軸(49)に回転
自在に設け、逆転及び低中高速用4段の副変速機構(5
1)を形成するもので、フォーク軸(49)を軸芯方向
に摺動させてシフタ(50)を変位させ、各ボールクラ
ッチ(35)〜(38)を介して低中高速用ギヤ(3
9)〜(41)及び逆転スプロケット(42)を副変速
軸(43)に択一係合させ、逆転及び低中高速の出力切
換を行うように構成している。
Further, as shown in FIGS. 4, 6, and 7, low, medium, and high speed gears (39), (40), (40) and (35) are removably engaged via ball clutches (35), (36), (37), and (38). 41)
And an auxiliary transmission shaft (4) provided with a reverse sprocket (42).
3) is rotatably supported by the transmission case (3), and the gears (39) to (41) are always meshed with the low, medium, and high speed output gears (44), (45), and (46) of the main transmission shaft (28). In addition, a reverse rotation sprocket (42) is always connected to a reverse rotation output sprocket (47) of the main transmission shaft (28) via a reverse rotation chain (48) serving as a reverse rotation switching means, and a sub transmission shaft (4).
The fork shaft (49) is slidably inserted into the shaft center position of 3), and the shifter (50) for selectively engaging each of the ball clutches (35) to (38) is rotated around the fork shaft (49). 4 speed auxiliary transmission mechanism for reverse rotation and low / medium / high speed (5
1), the fork shaft (49) is slid in the axial direction to displace the shifter (50), and the low, medium and high speed gear (3) is displaced via the ball clutches (35) to (38).
9) to (41) and the reverse rotation sprocket (42) are selectively engaged with the auxiliary speed change shaft (43) to perform reverse rotation and low / medium / high speed output switching.
【0008】さらに、図4、図5、図8に示す如く、前
記副変速軸(43)にスプロケット(52)を一体形成
し、またボールクラッチ型サイドクラッチ(53)(5
3)を介して車軸(5)にスプロケット(54)を軸支
させ、各スプロケット(52)(54)をチェン(5
5)によって連結させると共に、サイドクラッチ(5
3)(53)をバネ(56)(56)に抗して切操作す
るサイドクラッチアーム(57)(57)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
(58)を介してサイドクラッチアーム(57)を連結
させ、前記レバー(12)操作によってサイドクラッチ
(53)(53)を切動作させるように構成している。
Further, as shown in FIGS. 4, 5 and 8, a sprocket (52) is formed integrally with the auxiliary transmission shaft (43), and a ball clutch type side clutch (53) (5) is formed.
The sprocket (54) is supported on the axle (5) via 3), and each sprocket (52) (54) is connected to the chain (5).
5) and the side clutch (5)
3) A side clutch arm (57) (57) for disengaging the (53) against the springs (56) (56) is provided, and the side clutch lever (12) is connected to the side clutch wire (58) via a side clutch wire (58). The clutch arm (57) is connected, and the side clutches (53) (53) are disengaged by operating the lever (12).
【0009】さらに、図8、図9に示す如く、前記ミッ
ションケース(3)外側に突出させるフォーク軸(4
9)端部のノッチ(59)に一端を係入させる副変速ア
ーム(60)と、前記ヒッチ(7)のブラケット部をア
ウタ受として設けて副変速レバー(11)に一端を連結
させる副変速ワイヤ(61)と、該副変速ワイヤ(6
1)の他端を連結させる副変速切換アーム(62)を備
え、副変速アーム(60)と副変速切換アーム(62)
を長孔(63)とピン(64)によって連結させると共
に、ミッションケース(3)側面の支点板(65)に支
点軸(66)(67)を介して前記各アーム(60)
(62)を揺動自在に取付け、支点軸(66)(67)
に巻装させる戻しバネ(68)(69)を各アーム(6
0)(62)に連結させるもので、副変速レバー(1
1)操作によって戻しバネ(68)(69)に抗して各
アーム(60)(62)を揺動させてフォーク軸(4
9)を突出させる一方、戻しバネ(68)(69)によ
って各アーム(60)(62)を逆方向に揺動させてフ
ォーク軸(49)を退入させ、フォーク軸(49)のシ
フタ(50)を軸芯方向に摺動させ、副変速切換を行う
ように構成している。
Further, as shown in FIGS. 8 and 9, a fork shaft (4) projecting outside the transmission case (3) is provided.
9) A sub-transmission arm (60) that engages one end with a notch (59) at the end, and a sub-transmission that connects the one end to the sub-transmission lever (11) by providing a bracket portion of the hitch (7) as an outer support. Wire (61) and the auxiliary transmission wire (6
1) a sub-transmission switching arm (62) for connecting the other end of the sub-transmission arm (60) and the sub-transmission switching arm (62);
The arm (60) is connected to a fulcrum plate (65) on the side surface of the transmission case (3) via fulcrum shafts (66) and (67).
(62) is swingably mounted on the fulcrum shaft (66) (67)
Return springs (68) and (69) wound around each arm (6)
0) and (62).
1) By operating the arms (60) and (62) against the return springs (68) and (69), the fork shaft (4) is swung.
9), the arms (60) and (62) are swung in opposite directions by return springs (68) and (69) to retract the fork shaft (49), and the shifter (49) of the fork shaft (49) 50) is slid in the axial direction to switch the sub-transmission.
【0010】さらに、図1、図10、図11に示す如
く、入力プーリ(15)及び主変速ギヤ(19)を軸支
させる入力軸(21)と同一軸芯上にPTO軸(70)
を設け、該PTO軸(70)にPTO出力プーリ(2
0)を軸支させ、また各軸(21)(70)をスプライ
ン(71)(72)を介して継断自在に連結させるPT
Oクラッチ(73)を設けると共に、前記フォーク軸
(49)を当接させるシフタピン(74)を介して副変
速軸(43)にクラッチシフタ(75)を摺動自在に設
け、またミッションケース(3)に支点軸(76)を介
して揺動自在に設ける連動部材であるクラッチアーム
(77)を介してPTOクラッチ(73)にクラッチシ
フタ(75)を連結させ、またクラッチアーム(77)
に戻しバネ(78)を連結させるもので、前進及び後進
の切換を行う主変速機構(33)と、増減速切換を行う
副変速機構(51)を備える農用作業車において、主変
速機構(33)の走行出力を逆転させる逆転チェン(4
8)を副変速機構(51)に設けると共に、前記逆転チ
ェン(48)による逆転出力操作と連動させてPTO出
力継断用PTOクラッチ(73)を切動作させるクラッ
チアーム(77)を設けている。
Further, as shown in FIGS. 1, 10 and 11, the PTO shaft (70) is coaxial with the input shaft (21) for supporting the input pulley (15) and the main transmission gear (19).
And a PTO output pulley (2) is attached to the PTO shaft (70).
0), and the shafts (21) and (70) are connected to each other via splines (71) and (72) so as to be freely connectable.
An O-clutch (73) is provided, a clutch shifter (75) is slidably provided on the auxiliary transmission shaft (43) via a shifter pin (74) for abutting the fork shaft (49), and a transmission case (3) is provided. ), A clutch shifter (75) is connected to a PTO clutch (73) via a clutch arm (77), which is an interlocking member provided swingably via a fulcrum shaft (76), and a clutch arm (77).
The main transmission mechanism (33) is provided in an agricultural work vehicle including a main transmission mechanism (33) for switching between forward and reverse and an auxiliary transmission mechanism (51) for performing acceleration / deceleration switching. Reversing chain (4)
8) is provided in the auxiliary transmission mechanism (51), and a clutch arm (77) for disengaging the PTO output disconnection PTO clutch (73) in conjunction with the reverse rotation output operation by the reverse rotation chain (48) is provided. .
【0011】そして、図10のように、前記副変速レバ
ー(11)操作により、シフタ(50)を介して低中高
速用ギヤ(39)〜(41)のいずれかをボールクラッ
チ(35)〜(37)によって副変速軸(43)に係合
させているとき、戻しバネ(78)によって復動保持す
るクラッチアーム(77)を介してPTOクラッチ(7
3)を入力軸(21)とPTO軸(70)に係合連結さ
せ、PTOクラッチ(73)によって前記各軸(21)
(70)を連結支持し、PTO軸(70)を介してエン
ジン(1)出力をロータリ作業機(6)側に出力し、ロ
ータリ爪(18)を駆動して耕耘作業を行うと共に、図
1のように、副変速レバー(11)操作により、シフタ
(50)を介してボールクラッチ(38)によって逆転
スプロケット(42)を副変速軸(43)に係合させ、
主変速出力を逆転出力させるとき、ボールクラッチ(3
8)を係合動作させるフォーク軸(49)先端がシフタ
ピン(74)に当接し、クラッチシフタ(75)を摺動
させ、戻しバネ(78)に抗してクラッチアーム(7
7)を揺動させ、PTOクラッチ(73)を切断動作さ
せ、PTO軸(70)へのエンジン(1)出力を中止さ
せ、ロータリ作業機(6)のロータリ爪(18)を停止
させるもので、副変速レバー(11)のノークラッチ操
作により逆転チェン(48)を介して逆転出力させると
共に、前記逆転出力操作と連動してクラッチアーム(7
7)を介してPTOクラッチ(73)を切動作させてロ
ータリ爪(18)を停止させ、例えば主変速が前進のと
きに副変速の逆転出力によって後進させ、また主変速が
後進のときに副変速の逆転によって前進させ、前進また
は後進作業中に機体を少し戻したいときにロータリ爪
(18)を停止させた状態で逆進させるように構成して
いる。
Then, as shown in FIG. 10, by operating the sub-transmission lever (11), one of the low, medium and high speed gears (39) to (41) is moved via the shifter (50) to the ball clutches (35) to (41). When engaged with the auxiliary transmission shaft (43) by (37), the PTO clutch (7) is moved through the clutch arm (77) held backward by the return spring (78).
3) is engaged and connected to the input shaft (21) and the PTO shaft (70), and the respective shafts (21) are connected by the PTO clutch (73).
(70) is connected and supported, the output of the engine (1) is output to the rotary work machine (6) side via the PTO shaft (70), and the rotary pawl (18) is driven to perform the tilling work. By operating the sub-transmission lever (11), the reverse rotation sprocket (42) is engaged with the sub-transmission shaft (43) by the ball clutch (38) via the shifter (50).
When the main transmission output is output in reverse, the ball clutch (3
The tip of the fork shaft (49) that engages the engaging arm (8) abuts the shifter pin (74), slides the clutch shifter (75), and opposes the return spring (78) to the clutch arm (7).
7) is rocked, the PTO clutch (73) is disengaged, the engine (1) output to the PTO shaft (70) is stopped, and the rotary pawl (18) of the rotary working machine (6) is stopped. In response to the no-clutch operation of the auxiliary transmission lever (11), the reverse rotation is output via the reverse rotation chain (48), and the clutch arm (7) is operated in conjunction with the reverse rotation output operation.
7), the PTO clutch (73) is disengaged to stop the rotary pawl (18). For example, when the main shift is forward, the reverse shift output of the sub shift is used to move backward, and when the main shift is reverse, the It is configured to advance by reverse rotation of the gear shift, and to reverse when the rotary claw (18) is stopped when it is desired to slightly return the body during forward or reverse work.
【0012】[0012]
【発明の効果】以上実施例から明らかなように本発明
は、前進及び後進の切換を行う主変速機構(33)と、
増減速切換を行う副変速機構(51)を備える農用作業
車において、主変速機構(33)の走行出力を逆転させ
る逆転切換手段(48)を副変速機構(51)に設ける
と共に、前記逆転切換手段(48)による逆転出力操作
と連動させてPTO出力継断用PTOクラッチ(73)
を切動作させる連動部材(77)を設けたもので、主変
速機構(33)の前進移動または後進移動のいずれの場
合でも、副変速機構(51)の逆転切換手段(48)を
介して逆方向に移動させることができると共に、逆転切
換手段(48)による逆方向移動時にPTOクラッチ
(73)が自動的に切断され、農作業中に機体を少し戻
したい操作を従来よりも簡略化して取扱い操作性の向上
並びに安全性の向上などを容易に図ることができ、また
主変速の後進切換によってPTO出力を中止させる従来
技術に比べ、主変速の前進切換時と同様の作業を後進切
換時にも容易に行うことができるものである。
As is apparent from the above embodiments, the present invention provides a main transmission mechanism (33) for switching between forward and reverse travel,
In an agricultural work vehicle provided with an auxiliary transmission mechanism (51) that performs acceleration / deceleration switching, a reverse rotation switching means (48) that reverses the traveling output of the main transmission mechanism (33) is provided in the auxiliary transmission mechanism (51), and the reverse rotation switching is performed. The PTO clutch (73) for disconnecting the PTO output in conjunction with the reverse rotation output operation by the means (48)
An interlocking member (77) for disengaging the main transmission mechanism (33) is provided through the reverse rotation switching means (48) of the sub transmission mechanism (51) regardless of whether the main transmission mechanism (33) is moving forward or backward. The PTO clutch (73) is automatically disengaged during the reverse movement by the reverse rotation switching means (48), and the operation for slightly returning the aircraft during the agricultural work is simplified compared to the conventional operation. It is possible to easily improve the performance and safety, etc., and also to perform the same work as when switching the main speed forward when switching to the reverse, compared to the conventional technology in which the PTO output is stopped by the reverse switching of the main transmission. What can be done.
【図面の簡単な説明】[Brief description of the drawings]
【図1】PTOクラッチ部の説明図。FIG. 1 is an explanatory diagram of a PTO clutch unit.
【図2】管理機の側面図。FIG. 2 is a side view of the management device.
【図3】同平面図。FIG. 3 is a plan view of the same.
【図4】ミッションケース上部説明図。FIG. 4 is an explanatory view of a transmission case upper part.
【図5】同下部説明図。FIG. 5 is an explanatory view of the lower part.
【図6】主変速機構部の説明図。FIG. 6 is an explanatory diagram of a main transmission mechanism.
【図7】副変速機構部の説明図。FIG. 7 is an explanatory diagram of a subtransmission mechanism.
【図8】ミッションケース上部側面図。FIG. 8 is a top view of the transmission case.
【図9】副変速アーム部の説明図。FIG. 9 is an explanatory diagram of a sub-transmission arm portion.
【図10】PTOクラッチの継続説明図。FIG. 10 is a continuation explanatory view of a PTO clutch.
【図11】PTOクラッチ部の説明図。FIG. 11 is an explanatory diagram of a PTO clutch unit.
【符号の説明】[Explanation of symbols]
(33) 主変速機構 (48) 逆転チェン(逆転切換手段) (51) 副変速機構 (73) PTOクラッチ (77) クラッチアーム(連動部材) (33) Main transmission mechanism (48) Reverse rotation chain (reverse rotation switching means) (51) Sub transmission mechanism (73) PTO clutch (77) Clutch arm (interlocking member)
───────────────────────────────────────────────────── フロントページの続き (72)発明者 松 本 明 広 東京都渋谷区千駄ケ谷五丁目32番7号 石川島芝浦機械株式会社内 (56)参考文献 実開 昭53−112510(JP,U) (58)調査した分野(Int.Cl.7,DB名) A01B 33/08 B60K 17/28 F16H 3/00 ──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akihiro Matsumoto 5-32-7 Sendagaya, Shibuya-ku, Tokyo Inside Ishikawajima Shibaura Machinery Co., Ltd. (56) References Real Opening Sho53-112510 (JP, U) ( 58) Field surveyed (Int. Cl. 7 , DB name) A01B 33/08 B60K 17/28 F16H 3/00

Claims (1)

    (57)【特許請求の範囲】(57) [Claims]
  1. 【請求項1】 前進及び後進の切換を行う主変速機構
    と、増減速切換を行う副変速機構を備える農用作業車に
    おいて、主変速機構の走行出力を逆転させる逆転切換手
    段を副変速機構に設けると共に、前記逆転切換手段によ
    る逆転出力操作と連動させてPTO出力継断用PTOク
    ラッチを切動作させる連動部材を設けたことを特徴とす
    る農用作業車。
    An agricultural work vehicle having a main transmission mechanism for switching between forward and reverse and an auxiliary transmission mechanism for switching between acceleration and deceleration is provided with reverse rotation switching means for reversing the traveling output of the main transmission mechanism. And an interlocking member for disengaging the PTO output disconnection PTO clutch in conjunction with the reverse output operation by the reverse switching means.
JP19274993A 1993-07-06 1993-07-06 Agricultural work vehicle Expired - Fee Related JP3306498B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19274993A JP3306498B2 (en) 1993-07-06 1993-07-06 Agricultural work vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19274993A JP3306498B2 (en) 1993-07-06 1993-07-06 Agricultural work vehicle

Publications (2)

Publication Number Publication Date
JPH0723601A JPH0723601A (en) 1995-01-27
JP3306498B2 true JP3306498B2 (en) 2002-07-24

Family

ID=16296418

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19274993A Expired - Fee Related JP3306498B2 (en) 1993-07-06 1993-07-06 Agricultural work vehicle

Country Status (1)

Country Link
JP (1) JP3306498B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5944305B2 (en) * 2012-12-17 2016-07-05 ヤンマー株式会社 Work vehicle
WO2014098028A1 (en) * 2012-12-17 2014-06-26 ヤンマー株式会社 Working vehicle

Also Published As

Publication number Publication date
JPH0723601A (en) 1995-01-27

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