JPS61175347A - Ultra-low speed change gear of tractor - Google Patents

Ultra-low speed change gear of tractor

Info

Publication number
JPS61175347A
JPS61175347A JP60016875A JP1687585A JPS61175347A JP S61175347 A JPS61175347 A JP S61175347A JP 60016875 A JP60016875 A JP 60016875A JP 1687585 A JP1687585 A JP 1687585A JP S61175347 A JPS61175347 A JP S61175347A
Authority
JP
Japan
Prior art keywords
gear
shaft
ultra
low speed
shifter
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
Application number
JP60016875A
Other languages
Japanese (ja)
Other versions
JPH0663552B2 (en
Inventor
Masaaki Ito
正明 伊藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Agricultural Machinery Co Ltd
Original Assignee
Mitsubishi Agricultural Machinery Co Ltd
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 Mitsubishi Agricultural Machinery Co Ltd filed Critical Mitsubishi Agricultural Machinery Co Ltd
Priority to JP60016875A priority Critical patent/JPH0663552B2/en
Publication of JPS61175347A publication Critical patent/JPS61175347A/en
Publication of JPH0663552B2 publication Critical patent/JPH0663552B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE:To reduce the number of the components of a ultra-low speed change gears by mounting both main speed change selective gears and an ultra-low speed change selective gear on the same shaft and mounting both a main speed change shifter and a ultra-low speed change shifter on the same shifter shaft. CONSTITUTION:Both main speed change selective gears 49 and 50 and an ultra- low speed change selective gear 53 are mounted slidably on the same shaft (that is, a traveling speed change shaft) 39. Both main speed change shifters 62 and 63 and an ultra-low speed change shifter 65 are also slidably mounted on the same shifter shaft (that is, a main speed change shifter shaft) 61. If such constitution is adopted, the main speed change selective gears 49 and 50 and the ultra-low speed change selective gear 53 can be mounted on one shaft 39 and furthermore, the main speed change shifters 62 and 63 and the ultra-low speed change shifter 65 can be mounted on one shifter shaft 61. Thus, the number of components can be reduced.

Description

【発明の詳細な説明】 (イ)産業上の利用分計 本発明は、トラクタの超低速変速装置に係り、詳しくは
超低速用選択歯車及び超低速変速シックの配設位置に関
する。
DETAILED DESCRIPTION OF THE INVENTION (A) Industrial Applicability The present invention relates to a very low speed transmission for a tractor, and more particularly to the arrangement position of a very low speed selection gear and a very low speed change gear.

(ロ)従来の技術 一般に、トラクタの超低速変速装置は、機体後部のミッ
シ璽ンケース前方又は中間上方に配設された超低速変速
軸に超低速用選択歯車が摺動自在に配設され、更に該選
択歯車を摺動して超低速用歯車と噛み合わせるように超
低速変速シフタが超低速変速シフタ軸に摺動自在に配設
されて構成されており、超低速変速シフタを所定方向に
摺動すると超低速用選択歯車が超低速用歯車と噛み合わ
され、主変速軸の回転が超低速用歯車を介して超低速に
減速されてピニオン軸に伝達されている。
(B) Conventional technology In general, an ultra-low-speed transmission device for a tractor has an ultra-low-speed selection gear slidably disposed on an ultra-low-speed gear shaft disposed in front of or above the transmission case at the rear of the machine body. Furthermore, an ultra-low-speed shifter is slidably disposed on the ultra-low-speed shifter shaft so as to slide the selection gear and mesh with the ultra-low-speed gear, and the ultra-low-speed shifter is configured to move the ultra-low-speed shifter in a predetermined direction. When it slides, the very low speed selection gear meshes with the very low speed gear, and the rotation of the main transmission shaft is reduced to a very low speed and transmitted to the pinion shaft via the very low speed gear.

(ハ)発明が解決しようとする問題点 ところで、トラクタのミッシ1ンケースには、超低速変
速軸の外に走行変速軸が回転自在に支持されており、 該軸には主変速用選択歯車が摺動自在に配設され、更に
該選択歯車が摺動されて主変速用歯車と噛み合わされる
ように主変速シフタ軸に主変速シフタが摺動自在に配設
されて主変速装置が構成されており、従ってミッシνン
ケースには主変速装置を構成する走行変速軸及び主変速
シフタ軸、また超低速変速装置を構成する超低速変速軸
及び超低速変速シフタ軸が必要となり、大きなスペース
を必要としていた。
(c) Problems to be Solved by the Invention By the way, in the mission case of a tractor, a travel gear shift shaft is rotatably supported in addition to the ultra-low speed gear shift shaft, and the main gear selection gear is mounted on the shaft. The main transmission is configured such that the main transmission shifter is slidably disposed on the main transmission shifter shaft such that the selection gear is slidably engaged with the main transmission gear. Therefore, the transmission case requires a traveling transmission shaft and a main transmission shifter shaft that constitute the main transmission, as well as an ultra-low-speed transmission shaft and an ultra-low-speed transmission shifter shaft that constitute the ultra-low-speed transmission, which requires a large space. It was.

また、走行変速軸と超低速変速軸を同一軸で構成し、コ
ンパクトにした変速装置が案出されているが、該装置に
おいても主変速シフトを配設するための主変速シフタ軸
と超低速変速シフタを配設するための超低速変速シフタ
軸が別々に構成されており、従って超低速変速装置は多
くの部品よりなり、該装置の組立ては多くの工程を要す
る困難な作業であった。
In addition, a compact transmission device has been devised in which the travel gear shift shaft and the ultra-low speed gear shift shaft are configured on the same shaft, but in this device, the main gear shifter shaft and the ultra-low speed gear shift shaft for arranging the main gear shift have also been proposed. The very low speed change shifter shaft for disposing the speed change shifter is constructed separately, and therefore the very low speed change device consists of many parts, and the assembly of the device is a difficult task requiring many steps.

一方、クラッチハウジング内に歯車伝動装置を内蔵して
主軸をエンジンクランクシャフトに対して一段下方に転
移し、かつ該クラッチハウジングとミッションケースと
を中間ケースにて連結すると共に、該中間ケースを下方
に配置して、その上面をステップ面と略々同一面に構成
したトラクタが提案されているが、該トラクタは中間ケ
ースの下方への配置に伴いミッションケースを小型に構
成する必要があり、該ミッションケースに超低速変速装
置を収納することは収納スペースの点から困難であった
On the other hand, a gear transmission is built into the clutch housing so that the main shaft is moved one step downward relative to the engine crankshaft, and the clutch housing and transmission case are connected by an intermediate case, and the intermediate case is moved downward. A tractor has been proposed in which the upper surface of the tractor is arranged so that its upper surface is substantially flush with the step surface. It was difficult to store an ultra-low speed transmission in a case due to storage space.

(ロ)問題を解決するための手段 本発明は、上述問題点を解消することを目的とするもの
であって、主変速用選択歯車と超低速用選択歯車を同一
軸(走行変速軸)に摺動自在に配設し、また主変速シフ
タと超低速変速シフタを同一シフタ軸(主変速シフタ軸
)に摺動自在に配設したことを特徴とするものである。
(b) Means for solving the problem The present invention aims to solve the above-mentioned problems, and the main transmission selection gear and the very low speed selection gear are arranged on the same shaft (traveling transmission shaft). The main transmission shifter and the ultra-low speed transmission shifter are slidably disposed on the same shifter shaft (main transmission shifter shaft).

(ホ)作用 上述構成に基づき、主変速シフタと同一シフタ軸(主変
速シフタ軸)に配設された超低速変速シフタを所定方向
に摺動すると、主変速用選択歯車と同一軸(走行変速軸
)に配設された超低速用選択歯車が摺動され、該超低速
用選択歯車が超低速用歯車と噛み合わされて、超低速用
選択歯車が配設された軸(走行変速軸)の回転が超低速
用歯車を介して超低速に減速されてピニオン軸に伝達さ
れる。
(E) Effect Based on the above configuration, when the ultra-low speed shifter, which is disposed on the same shifter shaft as the main shifter (main shifter shaft), is slid in a predetermined direction, the The very low speed selection gear disposed on the shaft (shaft) is slid, and the very low speed selection gear is meshed with the very low speed gear, and the shaft (traveling speed change shaft) on which the very low speed selection gear is disposed is slid. The rotation is reduced to an extremely low speed and transmitted to the pinion shaft via an extremely low speed gear.

(へ)実施例 以下、図面に沿って、本発明による実施例について説明
する。
(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

トラクタNは、第2図に示すように、機体前方にエンジ
ンブロック1を有しており、該ブロック1の下部には前
方に突出してフロントシャーシ15が固定されていると
共に、後部にクラッチハウジング2が固定されている。
As shown in FIG. 2, the tractor N has an engine block 1 at the front of the machine body, and a front chassis 15 is fixed to the lower part of the block 1 so as to protrude forward, and a clutch housing 2 is attached at the rear. is fixed.

また、機体後方にはミッションケース5が配設されてお
り、該ケース5とクラッチハウジング2とが中間ケース
6を介して連結・固定され、一体構造形式の機体16を
構成している。更に、フロントシャーシ15にはフロン
トアクスル10を介して前輪12が支持されてお9、ま
たミッションケース5にはリヤアクスル17を介して後
輪11が支持されている。一方、クラッチハウジング2
の上方にはステアリング19が設置されており、またミ
ッションケース5の上方にはシート20が配置されて、
運転席21が構成されており、該運転席21はステップ
面に基づき、略々平坦面からなる広いフートスペースが
構成されている。
Further, a mission case 5 is disposed at the rear of the fuselage, and the case 5 and the clutch housing 2 are connected and fixed via an intermediate case 6 to form an integrally constructed fuselage 16. Further, a front wheel 12 is supported on the front chassis 15 via a front axle 10 9 , and a rear wheel 11 is supported on the transmission case 5 via a rear axle 17 . On the other hand, clutch housing 2
A steering wheel 19 is installed above the transmission case 5, and a seat 20 is installed above the transmission case 5.
A driver's seat 21 is constructed, and the driver's seat 21 has a wide foot space made of a substantially flat surface based on a step surface.

そして、第1図に示すように、クラッチハウジング2に
は主クラッチ22が内装されていると共に歯車伝動装置
23が配置されている。歯車伝動装置23はクラッチ2
2の出力軸即ちエンジンクランクシャフトに同軸上に延
出する軸25に固定されている歯車26及び該軸25よ
り一段下方に転移した主伝達軸27に固定されている歯
車28を有しており、これら歯車26.28が互に噛合
することにより主伝達軸27はエンジンクランクシャフ
トに対して所定量下方に位置する。更に、主伝達軸27
は中空軸からなり、該主中空伝達軸27は中間ケース6
を貫通して機体後部のミッションケース5に延出してい
る。また、該主中空伝達軸27の中には前輪駆動用伝達
軸29が回転自在に嵌挿しており、従ってこれら伝達軸
27,29は2重軸を構成している。更に、前輪伝達軸
29の前端部は主中空伝達軸27より突出し、該突出部
に歯車30が固定されている、Wに、歯車伝動装置23
内において前輪駆動軸31が回転自在に支持されており
、該駆動軸31には前輪駆動切換え歯車32が摺動のみ
自在に支持されていると共に、該駆動軸31の前端部は
クラッチハウジング2の下部から前方に向って突出して
いる。そして、前記歯車30が中間歯車33を介して切
換え歯車32に係脱自在に連動しており、また前輪駆動
軸31は短かいプロペラシャフト34を介してフロント
アクスル10に連結している(第2図参照)。
As shown in FIG. 1, a main clutch 22 is housed inside the clutch housing 2, and a gear transmission 23 is also disposed therein. The gear transmission 23 is the clutch 2
It has a gear 26 fixed to a shaft 25 extending coaxially with the second output shaft, that is, the engine crankshaft, and a gear 28 fixed to a main transmission shaft 27 moved one step below the shaft 25. , these gears 26 and 28 mesh with each other, so that the main transmission shaft 27 is located below the engine crankshaft by a predetermined amount. Furthermore, the main transmission shaft 27
consists of a hollow shaft, and the main hollow transmission shaft 27 is connected to the intermediate case 6.
It penetrates through and extends to the mission case 5 at the rear of the fuselage. Further, a front wheel drive transmission shaft 29 is rotatably fitted into the main hollow transmission shaft 27, and therefore these transmission shafts 27 and 29 constitute a double shaft. Furthermore, the front end of the front wheel transmission shaft 29 protrudes from the main hollow transmission shaft 27, and a gear 30 is fixed to the protrusion.
A front wheel drive shaft 31 is rotatably supported within the drive shaft 31, and a front wheel drive switching gear 32 is slidably supported on the drive shaft 31, and the front end of the drive shaft 31 is connected to the clutch housing 2. It protrudes forward from the bottom. The gear 30 is removably interlocked with the switching gear 32 via an intermediate gear 33, and the front wheel drive shaft 31 is connected to the front axle 10 via a short propeller shaft 34 (second (see figure).

一方、ミッションケース5には、第3図及び第4図にも
示すように前輪駆動用伝達軸29と同軸上にピニオン軸
35が回転自在に支持されており、かつ該ピニオン軸3
5はその前端にて前輪駆動用伝達軸29に連結している
と共に、後端部はベベルピニオンを介してリヤアクスル
17の差動歯車36に連動している。更に、該ピニオン
軸35の上方にはPTO変速軸37が回転自在に支持さ
れており、またピニオン軸35の下方には走行変速軸3
9が回転自在に支持されている。そして、ピニオン軸3
5に被嵌して多数の歯数の異なる歯車を有する中間歯車
組40が回転自在に配設されており、該歯車組40は主
中空伝達軸27に連結している。また、PTO変速軸3
7にはそれぞれ歯車組40の歯車と常時噛合している大
歯車41及び小歯車42が回転自在に支持されていると
共に、中歯車43が摺動のみ自在に支持されており、該
中歯車43がPTO変速レバーの操作に基づき、大歯車
41、小歯車42又は歯車組40の中歯車40bに選択
係合し得る。更に、PTO変速軸37はその後端部にて
歯車45.46を介して一段下方に転移されているPT
O軸4軸上7結しており、該PTO軸47は主伝達軸2
7及び前輪伝達軸29と略々同軸上に位置している。
On the other hand, as shown in FIGS. 3 and 4, a pinion shaft 35 is rotatably supported on the transmission case 5 coaxially with the front wheel drive transmission shaft 29.
5 is connected to the front wheel drive transmission shaft 29 at its front end, and its rear end is interlocked with the differential gear 36 of the rear axle 17 via a bevel pinion. Furthermore, a PTO speed change shaft 37 is rotatably supported above the pinion shaft 35, and a traveling speed change shaft 37 is supported below the pinion shaft 35.
9 is rotatably supported. And pinion shaft 3
5, an intermediate gear set 40 having a large number of gears with different numbers of teeth is rotatably disposed, and the gear set 40 is connected to the main hollow transmission shaft 27. In addition, PTO gear shift shaft 3
7, a large gear 41 and a small gear 42, which are always in mesh with the gears of the gear set 40, are rotatably supported, and an intermediate gear 43 is supported so as to be slidable only. can be selectively engaged with the large gear 41, the small gear 42, or the middle gear 40b of the gear set 40 based on the operation of the PTO shift lever. Furthermore, the PTO transmission shaft 37 is shifted one stage downward via gears 45 and 46 at its rear end.
The PTO shaft 47 is connected to the main transmission shaft 2.
7 and the front wheel transmission shaft 29 .

また、前記走行変速軸39には、第3図及び第7図にも
示すように、主変速用選択大歯車組49及び主変速用選
択小歯車組50が摺動のみ自在に嵌合しており、これら
歯車組49.50は主変速レバー51 (第1図)の操
作に基づき、後述する主変速シフタの作動により、前記
中間歯車組40の所定歯車に噛合し得る。また、該変速
軸39の後部分には副変速用歯車組52が回転自在に支
持されていると共に、超低速用選択歯車53が摺動のみ
自在に支持されており、更に該歯車組52に連結して超
低速用歯車組55が配設されており、選択歯車53は後
述する超低速変速シフタにより、副変速歯車組52に直
接又は超低速用歯車組55に噛合して、副変速歯車組5
2に変速軸39の回転を直接又は超低速用歯車組を介し
て伝達する。
Further, as shown in FIGS. 3 and 7, a main transmission selection large gear set 49 and a main transmission selection small gear set 50 are fitted to the traveling transmission shaft 39 so that they can only slide freely. These gear sets 49 and 50 can mesh with predetermined gears of the intermediate gear set 40 based on the operation of the main shift lever 51 (FIG. 1) and the operation of the main shift shifter, which will be described later. Further, a sub-transmission gear set 52 is rotatably supported at the rear portion of the shift shaft 39, and an ultra-low speed selection gear 53 is supported so as to be slidable only. A very low speed gear set 55 is arranged in connection, and the selection gear 53 meshes directly with the auxiliary speed gear set 52 or meshes with the very low speed gear set 55 by a super low speed shift shifter, which will be described later, to select the auxiliary speed change gear. Group 5
2, the rotation of the speed change shaft 39 is transmitted directly or via a very low speed gear set.

更に、ピニオン軸35の後部には副変速レバー56(第
1図)にて操作される歯車組57が摺動のみ自在に支持
されており、該歯車組57は副変速用歯車組52のいず
れかの歯車に選択噛合し得る。
Further, at the rear of the pinion shaft 35, a gear set 57 that is operated by an auxiliary transmission lever 56 (FIG. 1) is supported so as to be able to slide only. It can be selectively meshed with other gears.

そして、超低速用歯車組55は、第7図に詳示するよう
に、ミッションケース5の側方開口部5aから差込まれ
るブラケット54に取付けられており、該歯車組はブラ
ケット54に回転自在に支持されている軸55c及び該
軸に固定されている大小の歯車55a、55bからなる
。また、走行図ないし第8図に示すように、主変速りフ
タ軸61が支持されており、該シフタ軸61の一端部分
に(よ主変速レバー51と連動し′ている大歯車用主変
速シフタ62が摺動自在に配設され、該シフタ62は主
変速用選択大歯車組49のフォーク部を摺動して、中間
歯車組40の小歯車40cに選択噛合し得る。更に、大
歯車シフタ62に隣接してシフタ軸61には主変速レバ
ー51と連動している小歯車用主変速シフタ63が摺動
自在に配設され、前記大歯車用シフタ62と同様に、主
変速用選択小歯車組50を中間歯車組40の中歯車40
b又は大歯車40dに選択噛合し得る。更に、シフタ軸
61の他端部には図示しない超低速切換レバーと、連動
している超低速変速シフタ65が摺動自在に配設されて
おり、該シフタ65フオーク部は超低速用選択歯車53
の軸部53aを挾持しており、超低速用選択歯車53を
該超低速用歯車55aに選択噛合し得る。
The ultra-low speed gear set 55 is attached to a bracket 54 inserted from the side opening 5a of the mission case 5, as shown in detail in FIG. It consists of a shaft 55c supported by a shaft 55c and large and small gears 55a and 55b fixed to the shaft. In addition, as shown in the running diagram or FIG. A shifter 62 is slidably disposed, and the shifter 62 can slide the fork portion of the main gear selection large gear set 49 and selectively mesh with the small gear 40c of the intermediate gear set 40. A small gear main shift shifter 63 is slidably disposed on the shifter shaft 61 adjacent to the shifter 62 and is interlocked with the main gear shift lever 51.Similar to the large gear shifter 62, the main shift shifter 63 is slidably disposed on the shifter shaft 61. The small gear set 50 is the intermediate gear 40 of the intermediate gear set 40.
b or large gear 40d. Further, at the other end of the shifter shaft 61, an ultra-low speed changeover lever (not shown) and an interlocking ultra-low-speed shifter 65 are slidably disposed, and the fork portion of the shifter 65 is connected to an ultra-low-speed selection gear. 53
The shaft portion 53a is held in between, and the very low speed selection gear 53 can be selectively engaged with the very low speed gear 55a.

なお、図中59は後進用の歯車である。また、て構成さ
れている強度部材である。
In addition, numeral 59 in the figure is a gear for reverse movement. In addition, it is a strength member made up of.

本実施例は以上のような構成からなるので、主変速レバ
ー51の切換えにより、大歯車用主変速シフタ62又は
小歯車用主変速シフタ63が所定方向に摺動されると、
該シフタの摺動により主変速用選択大歯車紙49又は主
変速用選択小歯車組50が中間歯車組40の各歯車に選
択噛合され、該中間歯車組40の回転が前進3段、後進
1段に変速されて走行変速軸39に伝達される。更に、
超低速切替えレバー(図示せず)を切位置にすると、超
低速変速シフタ65が左方向に摺動され、超低速用選択
歯車53が副変速用歯車組52に噛合されて、走行変速
軸39の回転が直接に副変速用歯車組52に伝達され、
更に該回転が副変速レバー56による歯車組57の副変
速用歯車組52への選択噛合により2段に変速されてピ
ニオン軸35に伝達され、これによりトラクタNが通常
速度で走行される。また、超低速切換えレバーを入位置
にすると、超低速変速シフタ65が右方向に摺動され、
超低速用選択歯車53が副変速用歯車組52から外れる
と共に、超低速用歯車55aに噛合されて、走行変速軸
39の回転が超低速用歯車組55を介して副変速用歯車
組52に伝達される。これにより、超低速に減速された
副変速用歯車組52の回転が、前述同様にピニオン軸3
5に伝達され、トラクタNが超低速度で走行される。
Since the present embodiment has the above configuration, when the main gear shifter 62 for large gears or the main gear shifter 63 for small gears is slid in a predetermined direction by switching the main gear shift lever 51,
By sliding the shifter, the main gear selection large gear paper 49 or the main gear selection small gear set 50 is selectively engaged with each gear of the intermediate gear set 40, and the rotation of the intermediate gear set 40 is changed to three forward speeds and one reverse speed. The speed is changed into gears and transmitted to the traveling speed change shaft 39. Furthermore,
When the ultra-low speed switching lever (not shown) is set to the off position, the ultra-low speed shifter 65 is slid to the left, the ultra-low speed selection gear 53 is engaged with the auxiliary gear set 52, and the traveling gear shift shaft 39 is engaged with the auxiliary gear set 52. The rotation of is directly transmitted to the sub-transmission gear set 52,
Further, the rotation is transmitted to the pinion shaft 35 through two gears by selectively engaging the gear set 57 with the sub-transmission gear set 52 by the sub-shift lever 56, thereby causing the tractor N to travel at normal speed. Furthermore, when the ultra-low speed switching lever is placed in the on position, the ultra-low speed shifter 65 is slid to the right.
The ultra-low speed selection gear 53 is disengaged from the sub-transmission gear set 52, and is meshed with the ultra-low-speed gear 55a, so that the rotation of the traveling shift shaft 39 is transferred to the sub-transmission gear set 52 via the ultra-low speed gear set 55. communicated. As a result, the rotation of the auxiliary transmission gear set 52, which has been decelerated to an extremely low speed, is reduced to the pinion shaft 3 in the same manner as described above.
5, and the tractor N is driven at an extremely low speed.

(ト)発明の詳細 な説明したように、本発明によると、主変速用選択歯車
49.50と超低速用選択歯車53を同一軸(走行変速
軸)39に摺動自在に配設し、また主変速シフタ62,
63と超低速変速シフタ65を同一のシフタ軸(主変速
シフタ軸)61に摺動自在に配設したので、1本の軸(
走行変速軸)39に主変速用選択歯車49,50及び超
低速用選択歯車53を配設することができ、更に1本の
シフタ軸(主変速シフタ軸)61に主変速シフタ62.
63及び超低速変速シフタ65を配設することができる
。従って、超低速変速装置を構成する部品数を低減する
ことができ、コンパクトに構成できると共に、該装置の
組立てを容易に行うことができる。
(G) As described in detail, according to the present invention, the main transmission selection gear 49,50 and the very low speed selection gear 53 are slidably disposed on the same shaft (traveling transmission shaft) 39, In addition, the main transmission shifter 62,
63 and the ultra-low speed shifter 65 are slidably disposed on the same shifter shaft (main shifter shaft) 61.
The main speed selection gears 49, 50 and the ultra-low speed selection gear 53 can be disposed on the traveling speed change shaft 39, and the main speed shifter 62.
63 and a very low speed shifter 65 can be provided. Therefore, the number of parts constituting the ultra-low speed transmission device can be reduced, making it compact and easy to assemble.

また、超低速変速装置を構成する部品数を低減したこと
により、ミッションケース5内の狭いスペースでも超低
速変速装置を設置することができ、中間ケース6を下方
に配置し、その上面6aをステップ面7と略々同一面に
構成したトラクタNにおいても、ミッションケース5内
に超低速変速装置を収納することが可能となる。
Furthermore, by reducing the number of parts that make up the ultra-low-speed transmission, the ultra-low-speed transmission can be installed even in a narrow space within the mission case 5. Even in the tractor N configured to be substantially flush with the surface 7, it is possible to house the ultra-low speed transmission in the transmission case 5.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係るトラクタの超低速変速装置を含む
伝動装置を示す断面図、第2図はトラクタを示す全体側
面図、第3図は本発明に係る超低速変速装置を適用した
ミッシ1ンケース内の歯車伝動装置を示す側面図、第4
図はその正面図、第5図は本発明に係る超低速変速装置
の超低速変速シフタ及び主変速シフタの取付を示す側面
図、第6図はその正面図、第7図は超低速用選択歯車と
超低速用歯車及び超低速変速シフタの関係を示す側面図
、第8図はその正面図である。 軸 、 40・・・主変速用歯車(中間歯車組)、 4
9.50・・・主変速用選択歯車(49・・・主変速用
選択大歯車紙 、 50・・・主変速用選択小歯車組)
 、 53・・・超低速用選択歯車 、 55・・・超
低速用歯車組(55a・・・超低速用歯車、55b・・
・噛合い歯車55b)、61・・・主変速シフタ軸 、
 62.63・・・主変速シフタ(62・・・大歯車用
主変速シフタ、63・・・小歯車用主変速シフタ) 、
 65・・・超低速変速シフタ 、 N・・・トラクタ
FIG. 1 is a sectional view showing a transmission device including an ultra-low speed transmission for a tractor according to the present invention, FIG. 2 is an overall side view of the tractor, and FIG. 1 side view showing the gear transmission in the case, 4th
The figure is a front view, FIG. 5 is a side view showing the installation of the ultra-low speed shifter and main shifter of the ultra-low speed transmission according to the present invention, FIG. 6 is a front view thereof, and FIG. 7 is the ultra-low speed selection. FIG. 8 is a side view showing the relationship between the gear, the very low speed gear, and the very low speed shifter, and FIG. 8 is a front view thereof. Shaft, 40...Main transmission gear (intermediate gear set), 4
9.50... Selection gear for main shift (49... Selection large gear paper for main shift, 50... Selection small gear set for main shift)
, 53...Ultra low speed selection gear, 55...Ultra low speed gear set (55a...Ultra low speed gear, 55b...
・Meshing gear 55b), 61...Main transmission shifter shaft,
62.63...Main gear shifter (62...Main gear shifter for large gears, 63...Main gear shifter for small gears),
65...Ultra low speed shifter, N...Tractor.

Claims (1)

【特許請求の範囲】[Claims] (1)主変速用選択歯車49、50を主変速シフタ62
、63で摺動し、また超低速用選択歯車53を超低速変
速シフタ65で摺動して、それぞれ主変速用歯車40ま
たは超低速用歯車55aに噛み合せて動力を伝達するト
ラクタにおいて、 主変速用選択歯車と超低速用選択歯車を同一軸39に摺
動自在に配設し、また主変速シフタと超低速変速シフタ
を同一シフタ軸61に摺動自在に配設したことを特徴と
するトラクタの超低速変速装置。
(1) Main transmission selection gears 49 and 50 are connected to main transmission shifter 62
, 63, and the ultra-low speed selection gear 53 is slid by the ultra-low speed change shifter 65 to mesh with the main gear 40 or the ultra-low speed gear 55a, respectively, to transmit power. A tractor characterized in that a selection gear for use and a selection gear for ultra-low speed are slidably arranged on the same shaft 39, and a main transmission shifter and an ultra-low speed transmission shifter are arranged slidably on the same shifter shaft 61. ultra-low speed transmission.
JP60016875A 1985-01-31 1985-01-31 Ultra low speed transmission of tractor Expired - Lifetime JPH0663552B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60016875A JPH0663552B2 (en) 1985-01-31 1985-01-31 Ultra low speed transmission of tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60016875A JPH0663552B2 (en) 1985-01-31 1985-01-31 Ultra low speed transmission of tractor

Publications (2)

Publication Number Publication Date
JPS61175347A true JPS61175347A (en) 1986-08-07
JPH0663552B2 JPH0663552B2 (en) 1994-08-22

Family

ID=11928360

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60016875A Expired - Lifetime JPH0663552B2 (en) 1985-01-31 1985-01-31 Ultra low speed transmission of tractor

Country Status (1)

Country Link
JP (1) JPH0663552B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011193767A (en) * 2010-03-18 2011-10-06 Yanmar Co Ltd Crop space-changing device of seedling transplanter and riding type rice transplanter equipped with the same
CN108533696A (en) * 2018-06-28 2018-09-14 陕西润牧农业科技有限公司 A kind of multi-cylinder kitten gearbox

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0952661A (en) * 1995-08-11 1997-02-25 Morita Soushiyou:Kk Wire damper for bobbin

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151735U (en) * 1982-04-06 1983-10-11 ヤンマー農機株式会社 Gear sliding type transmission
JPS58157026U (en) * 1982-04-16 1983-10-20 株式会社クボタ Rotating shaft connection structure
JPS58209626A (en) * 1982-12-01 1983-12-06 Kamizaki Kokyu Koki Seisakusho Kk Tractor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58151735U (en) * 1982-04-06 1983-10-11 ヤンマー農機株式会社 Gear sliding type transmission
JPS58157026U (en) * 1982-04-16 1983-10-20 株式会社クボタ Rotating shaft connection structure
JPS58209626A (en) * 1982-12-01 1983-12-06 Kamizaki Kokyu Koki Seisakusho Kk Tractor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011193767A (en) * 2010-03-18 2011-10-06 Yanmar Co Ltd Crop space-changing device of seedling transplanter and riding type rice transplanter equipped with the same
CN108533696A (en) * 2018-06-28 2018-09-14 陕西润牧农业科技有限公司 A kind of multi-cylinder kitten gearbox

Also Published As

Publication number Publication date
JPH0663552B2 (en) 1994-08-22

Similar Documents

Publication Publication Date Title
GB2053386A (en) Power take-off system
JPS629055B2 (en)
JPH0533174B2 (en)
JPS61175347A (en) Ultra-low speed change gear of tractor
CA1307949C (en) Automotive transmission
JP2987879B2 (en) Tractor transmission
JP3739993B2 (en) Work vehicle transmission
GB2088974A (en) Traction transmission
JPH0558930B2 (en)
JPH06337065A (en) Transmission operation device for tractor
JPS621479Y2 (en)
JP2660324B2 (en) Tiller
JP3848626B2 (en) Work vehicle transmission
JP2609904B2 (en) Transmission equipment for agricultural tractors
JPS61169323A (en) Transmission for tractor
JPS6244825Y2 (en)
JPS6140979Y2 (en)
JPH0439124A (en) Power train construction for vehicle
JP2524654Y2 (en) Attachment structure of hydraulic pump in work vehicle
JP2569340Y2 (en) Transmission structure of agricultural tractor
JPS61178234A (en) Transmission for tractor
JPS627024Y2 (en)
JPH06280998A (en) Transmission case of tractor
JP3565612B2 (en) Mission structure of walking machine
JP2979581B2 (en) Tractor transmission