JPH0635722U - Tractor power transmission device - Google Patents
Tractor power transmission deviceInfo
- Publication number
- JPH0635722U JPH0635722U JP7085992U JP7085992U JPH0635722U JP H0635722 U JPH0635722 U JP H0635722U JP 7085992 U JP7085992 U JP 7085992U JP 7085992 U JP7085992 U JP 7085992U JP H0635722 U JPH0635722 U JP H0635722U
- Authority
- JP
- Japan
- Prior art keywords
- gear
- shaft
- transmission
- pto
- traveling
- 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
Landscapes
- Arrangement And Driving Of Transmission Devices (AREA)
- Transmission Devices (AREA)
Abstract
(57)【要約】
【目的】 トラクタのミッションケース内において、P
TO軸の逆転装置を設ける際に部品点数の増加を抑え
て、ミッションケースをコンパクトに構成する。
【構成】 走行系変速機構とPTO系変速機構が独立し
て構成したトラクタの変速機構において、前後進切換装
置AからPTO変速装置G内に延設されている走行用伝
動軸3に、逆転用アイドラギア22を遊嵌した。
(57) [Summary] [Purpose] In the mission case of the tractor, P
The transmission case is made compact by suppressing an increase in the number of parts when a TO-axis reversing device is provided. In a transmission mechanism of a tractor in which a traveling transmission mechanism and a PTO transmission mechanism are independently configured, a reverse transmission is provided on a traveling transmission shaft 3 extending from a forward / reverse switching device A into a PTO transmission device G. Idler gear 22 was loosely fitted.
Description
【0001】[0001]
本考案はトラクタの変速機構の走行系とPTO系に各々逆転機構を装備する場 合の配置に関するものである。 The present invention relates to an arrangement in which a traveling system and a PTO system of a transmission mechanism of a tractor are equipped with respective reverse rotation mechanisms.
【0002】[0002]
従来のトラクタの変速機構において、正転の場合は入力軸から出力軸へ直接動 力を伝達し、逆転の場合は入力軸と出力軸の間に新たにバックギアシャフト等の 中間軸を設け逆転させて動力を伝達していたのである。また、前記中間軸を設け ない場合は、遊星歯車方式やHST方式で対応していたのである。 In the conventional tractor transmission mechanism, in the case of forward rotation, the dynamic force is directly transmitted from the input shaft to the output shaft, and in the case of reverse rotation, a new intermediate shaft such as a back gear shaft is provided between the input shaft and the output shaft for reverse rotation. The power was transmitted. Further, when the intermediate shaft is not provided, the planetary gear system and the HST system are used.
【0003】[0003]
しかし、従来技術において逆転させる為に中間軸としてバックギアシャフトを 設けた場合、バックギアシャフトやベアリングやクリップ等の部品点数が増加し て組み立て工数が増加するばかりでなく、ミッションケースの内にそれを配置す るためのスペースを確保する必要があり、バックギアの追加により内部構造が複 雑となり全体が大型化し、逆転機能の有無でミッションケースの軸穴数が異なる ので部品の管理が煩雑になる等の課題があったのであり、また、遊星歯車方式や HST方式の場合でも、ミッションケース全体が大型化・複雑化する為にコンパ クト化が難しいという課題があったのである。 However, when a back gear shaft is provided as an intermediate shaft for reversing in the conventional technology, not only the number of parts such as the back gear shaft, bearings and clips increases, and the assembly man-hours increase, but also it is not possible to use it in the mission case. It is necessary to secure a space for arranging the parts, the addition of back gears complicates the internal structure and makes the whole larger, and the number of shaft holes in the mission case differs depending on whether or not there is a reverse rotation function, making parts management complicated. In addition, there was a problem that even in the case of the planetary gear system and the HST system, it was difficult to achieve compactness because the entire mission case became large and complicated.
【0004】[0004]
本考案の解決すべき課題は以上の如くであり、次に該課題を解決する手段につ いて説明する。即ち、走行系変速機構と動力取出系変速機構を独立的に構成し、 トラクタの変速機構において、動力取出系変速機構の逆転用アイドラギアを走行 系変速機構の軸上に遊嵌した構成とするのである。 The problems to be solved by the present invention are as described above, and the means for solving the problems will be described below. In other words, the traveling speed change mechanism and the power take-out speed change mechanism are independently configured, and the reverse gear of the power take-out speed change mechanism is loosely fitted on the shaft of the speed change mechanism. is there.
【0005】[0005]
【作用】 本考案の作用について説明する。エンジンEからの動力は入力軸1より前後進 切換部Aの走行用伝動軸3上の後進カウンタギア5bに伝えられ、該後進カウン タギア5bに一体的に設けた動力取出用ギア5cから動力取出部GのPTOカウ ンタ軸18上の固設ギア18aに伝えられ、該固設ギア18aより同軸上の固設 ギア18bが走行用伝動軸3上に遊嵌した二連の逆転用アイドラギア22の歯車 22aと噛合し、もう一つの歯車22bがPTO伝動軸19の摺動ギア20aを 摺動させることにより噛合可能として、該歯車22bと摺動ギア20aを噛合さ せることによりPTO伝動軸19からPTO軸21を逆方向に回転することがで きるのである。[Operation] The operation of the present invention will be described. The power from the engine E is transmitted from the input shaft 1 to the reverse counter gear 5b on the traveling transmission shaft 3 of the forward / reverse switching section A, and is taken out from the power take-out gear 5c provided integrally with the reverse counter gear 5b. The fixed gear 18b is transmitted to the fixed gear 18a on the PTO counter shaft 18 of the section G, and the fixed gear 18b coaxial with the fixed gear 18a is loosely fitted on the traveling transmission shaft 3 of the two reverse idler gears 22. The gear 22a meshes with the other gear 22b by sliding the sliding gear 20a of the PTO transmission shaft 19 so that the gear 22b and the sliding gear 20a mesh with each other. It is possible to rotate the PTO shaft 21 in the opposite direction.
【0006】[0006]
本考案の解決すべき課題及び解決する手段は以上の如くであり、次に本考案の 具体的な構成について添付した図面により説明する。図1は本考案のトラクタの 動力伝達装置の側面断面図、図2は前後進切換部と動力取出系の側面断面図、図 3は図1のスケルトン図である。 The problems to be solved and the means for solving the present invention are as described above. Next, a specific configuration of the present invention will be described with reference to the accompanying drawings. 1 is a side sectional view of a power transmission device for a tractor of the present invention, FIG. 2 is a side sectional view of a forward / reverse switching portion and a power takeoff system, and FIG. 3 is a skeleton diagram of FIG.
【0007】 図1・図3においてトラクタの動力伝達装置の構成を説明する。トラクタの動 力伝達装置は、走行系変速機構と動力取出(PTO)系変速機構が独立的に構成 されており、前部よりメインクラッチ4、前後進切換部A、動力取出部G、主変 速部B、副変速部D、デフギア装置Fと配設され、前部ミッションケース30内 には、入力軸1、走行用カウンタ軸2、走行用伝動軸3が各々ベアリングに軸受 け支持されて平行に横架されて、エンジンEの動力がメインクラッチ4を介して 入力軸1に伝えられる。該入力軸1上の前進固設ギア1aから走行用カウンタ軸 2上の固設ギア2aを介して走行用伝動軸3に遊嵌した前進カウンタギア5aに 動力が伝えられる。また、前記入力軸1上の後進固設ギア1bは走行用伝動軸3 上に遊嵌した後進カウンタギア5bと噛合して動力が伝えられるのである。The configuration of the power transmission device of the tractor will be described with reference to FIGS. 1 and 3. The power transmission device of the tractor is composed of a traveling system transmission mechanism and a power take-off (PTO) system transmission mechanism independently of each other. From the front part, the main clutch 4, the forward / reverse switching section A, the power take-out section G, and the main change unit. The speed section B, the auxiliary transmission section D, and the differential gear device F are arranged. Inside the front transmission case 30, the input shaft 1, the traveling counter shaft 2, and the traveling transmission shaft 3 are supported by bearings. The power of the engine E is transmitted to the input shaft 1 via the main clutch 4 while being horizontally stretched in parallel. Power is transmitted from the forward fixed gear 1a on the input shaft 1 through the fixed gear 2a on the traveling counter shaft 2 to the forward counter gear 5a loosely fitted on the traveling transmission shaft 3. The reverse fixed gear 1b on the input shaft 1 meshes with the reverse counter gear 5b loosely fitted on the traveling transmission shaft 3 to transmit power.
【0008】 前記前進カウンタギア5a及び後進カウンタギア5bはシンクロメッシュギア を介して摺動ギア6aを摺動させることにより噛合して連動連結可能であり、該 摺動ギア6aは走行用伝動軸3上に固設したギア6bと常時噛合しており、図示 しない前後進切換レバーの操作により、摺動ギア6aがスライドして前後進切換 が行われるのである。The forward counter gear 5a and the reverse counter gear 5b can be interlockingly connected by meshing by sliding a sliding gear 6a through a synchromesh gear, and the sliding gear 6a is connected to the traveling transmission shaft 3 It is always meshed with the gear 6b fixed above, and the sliding gear 6a slides to switch between forward and backward movements by operating a forward and backward movement switching lever (not shown).
【0009】 前記ギア6bに伝達された動力は、該走行用伝動軸3と同軸芯上に延設した動 力伝達軸7に伝えられ、該動力伝達軸7上には固設ギア7a・7b・7c・7d が形成され、ミッションケース30に動力伝達軸7と平行に横架した主変速軸8 に遊嵌した遊嵌ギア9a・9b・9c・9dが前記固設ギア7a・7b・7c・ 7dと各々噛合されており、該遊嵌ギア9a・9bと遊嵌ギア9c・9dの間に はそれぞれ摺動ギア10a・10bを配置して、該摺動ギア10a・10bをオ ペレータの主変速操作で主変速軸8の摺動ギア10aが遊嵌ギア9aか9bのい ずれか、または、摺動ギア10bが遊嵌ギア9cか9dのいずれかにスライドさ せて、動力伝達軸7から主変速軸8に動力を伝えて四段階の変速を可能としてい るのである。The power transmitted to the gear 6b is transmitted to a dynamic power transmission shaft 7 extending coaxially with the traveling power transmission shaft 3, and fixed gears 7a and 7b are provided on the power transmission shaft 7. 7c and 7d are formed, and the loosely fitted gears 9a, 9b, 9c and 9d that are loosely fitted to the main transmission shaft 8 that is laid across the transmission case 30 in parallel with the power transmission shaft 7 are the fixed gears 7a, 7b and 7c. 7d are respectively meshed with each other, and sliding gears 10a and 10b are arranged between the loose fitting gears 9a and 9b and the loose fitting gears 9c and 9d, respectively, and the sliding gears 10a and 10b are connected to the operator. When the main gearshift operation is performed, the sliding gear 10a of the main gearshift shaft 8 is slid onto either the loose fitting gear 9a or 9b, or the sliding gear 10b is slid onto either the loose fitting gear 9c or 9d. Power is transmitted from 7 to the main speed change shaft 8 to enable four-step speed change. Of.
【0010】 そして、前記主変速軸8から後部の副変速部Dに動力が伝えられ、更にクリー プ変速部Cに動力を伝達可能としており、該副変速部Dは主変速軸8後部上に固 設ギア8a・8bが形成されるとともに、該主変速軸8と平行に動力伝達軸7延 長上に走行駆動軸12が横架され、更に主変速軸8と平行に軸14・15が横架 されており、前記固設ギア8a・8bは走行駆動軸12上の摺動ギア13を摺動 させることにより歯車13a又は13bと噛合させて高低の副変速を可能し、該 固設ギア8aは更に軸14上の二連の遊嵌ギア11の歯車11aと噛合し、他方 の歯車11bは軸15上の二連の遊嵌ギア16の歯車16aと噛合し、他方の歯 車16bは走行駆動軸12上の摺動ギア13aと噛合可能としてクリープ変速を 可能としている。また、走行駆動軸12上には固設ギア12cが設けられ、後述 するPTO軸21に遊嵌した歯車24、遊嵌歯車25を介して前輪動力取出軸2 3上の固設歯車23aに伝えられ、前輪26を駆動するようにしており、該走行 駆動軸12からは後端に形成したベベルピニオン12bからデフギア装置Fに伝 えられ、該デフギア装置Fから複数の軸と減速ギアを経て後輪17を駆動するよ うにしているのである。Power is transmitted from the main transmission shaft 8 to the sub transmission portion D at the rear portion, and power can be further transmitted to the creep transmission portion C. The sub transmission portion D is provided on the rear portion of the main transmission shaft 8. The fixed gears 8a, 8b are formed, the traveling drive shaft 12 is laterally extended on the extension of the power transmission shaft 7 in parallel with the main transmission shaft 8, and the shafts 14, 15 are provided in parallel with the main transmission shaft 8. The fixed gears 8a and 8b are laterally bridged, and by sliding the sliding gear 13 on the traveling drive shaft 12, the fixed gears 8a and 8b mesh with the gear 13a or 13b to enable high and low auxiliary shifts. 8a further meshes with the gear 11a of the two loose fitting gears 11 on the shaft 14, the other gear 11b meshes with the gear 16a of the two loose fitting gears 16 on the shaft 15, and the other gear 16b Creep speed change is possible by meshing with the sliding gear 13a on the drive shaft 12. Noh. Further, a fixed gear 12c is provided on the traveling drive shaft 12, and is transmitted to a fixed gear 23a on the front wheel power take-off shaft 23 via a gear 24 and a loose fit gear 25 which are loosely fitted to a PTO shaft 21, which will be described later. The front wheel 26 is driven by the bevel pinion 12b formed at the rear end of the traveling drive shaft 12 to the diff gear device F, and the diff gear device F travels through a plurality of shafts and reduction gears. The wheels 17 are driven.
【0011】 次に、図2・図3においてPTO系変速機構への動力の伝達について説明する 。PTO系変速機構は動力取出部Gと逆転PTO変速部Hから構成されており、 該動力取出部Gは前記前後進切換部Aの走行用伝動軸3と平行にPTOカウンタ 軸18、PTO伝動軸19が各々ベアリングに軸受けされて横架されており、該 走行用伝動軸3に遊嵌されている後進カウンタギア5bには一体的に動力取出用 ギア5cが設けられており、該動力取出用ギア5cにPTOカウンタ軸18上の 固設ギア18aが噛合して、常時PTO系に動力を伝えるように構成しているの である。Next, transmission of power to the PTO system speed change mechanism will be described with reference to FIGS. 2 and 3. The PTO system speed change mechanism is composed of a power take-out section G and a reverse PTO speed change section H. The power take-out section G is arranged in parallel with the traveling transmission shaft 3 of the forward / reverse switching section A, the PTO counter shaft 18 and the PTO transmission shaft. 19 are respectively supported by bearings and are horizontally installed, and a reverse counter gear 5b loosely fitted to the traveling transmission shaft 3 is integrally provided with a power take-out gear 5c. The fixed gear 18a on the PTO counter shaft 18 meshes with the gear 5c to constantly transmit power to the PTO system.
【0012】 前記PTOカウンタ軸18上には固設ギア18aの他に固設ギア18b・18 c・18d・18eが固設されており、該固設ギア18cはPTO伝動軸19の 摺動ギア20aを摺動させることにより噛合可能であり、固設ギア18dは摺動 ギア20b、固設ギア18eは摺動ギア20cとそれぞれ摺動ギア20b・20 cを摺動させることにより噛合可能であり、正回転の三段のPTO変速が可能と しているのである。そして、前後進切換部A後部に逆転PTO変速部Hが形成さ れており、走行用伝動軸3上に二連の逆転アイドラギア22を遊嵌して、該二連 の逆転アイドラギア22の一方の歯車22aは前記固設ギア18bと噛合し、他 方の歯車22bは前記PTO伝動軸19上の摺動ギア20aを摺動させることに より噛合可能としてPTO伝動軸19へ逆転した回転を伝達するようしているの である。このように摺動ギア20a・20b・20cを摺動させて噛合させるこ とにより入力軸1より前進カウンタギア5bを介してPTO変速されてPTO伝 動軸19へ動力が伝えられ、更に、PTO伝動軸19後端には同軸の軸芯を持つ PTO軸21が連結され、トラクタの後方に連結された作業機を駆動可能として いるのである。On the PTO counter shaft 18, fixed gears 18 b, 18 c, 18 d, and 18 e are fixedly mounted in addition to the fixed gear 18 a, and the fixed gear 18 c is a sliding gear of the PTO transmission shaft 19. The fixed gear 18d can be meshed with the sliding gear 20b, and the fixed gear 18e can be meshed with the sliding gear 20c by sliding the sliding gears 20b and 20c, respectively. That is, it is possible to perform three forward rotation PTO gear shifts. A reverse rotation PTO speed change portion H is formed at the rear of the forward / reverse switching portion A, and two reverse rotation idler gears 22 are loosely fitted on the traveling transmission shaft 3 so that one of the double reverse rotation idler gears 22 is The gear 22a meshes with the fixed gear 18b, and the other gear 22b meshes by sliding the sliding gear 20a on the PTO transmission shaft 19 to transmit the reverse rotation to the PTO transmission shaft 19. I am doing so. By sliding and engaging the sliding gears 20a, 20b, and 20c in this manner, the PTO speed is changed from the input shaft 1 through the forward counter gear 5b, the power is transmitted to the PTO transmission shaft 19, and the PTO transmission shaft 19 is further transmitted. A PTO shaft 21 having a coaxial shaft center is connected to the rear end of the transmission shaft 19 to drive a working machine connected to the rear of the tractor.
【0013】[0013]
本考案は以上の如く構成したので、次のような効果を奏するものである。即ち 、走行系の軸に逆転ギアを遊嵌したので、従来のミッションケースをそのまま逆 転用としても使用することができるようになり部品の管理が容易になり、バック ギアシャフト等の中間軸が不要になるので加工工程を減少させることができ、組 立も簡単になり、ミッションケース全体をコンパクトに構成することができるよ うになるのである。 Since the present invention is configured as described above, it has the following effects. That is, since the reverse gear is loosely fitted to the shaft of the traveling system, the conventional mission case can be used as it is for reverse rotation, which simplifies the management of parts and eliminates the need for an intermediate shaft such as a back gear shaft. As a result, the number of processing steps can be reduced, assembly becomes simple, and the entire mission case can be made compact.
【図1】本考案のトラクタの動力伝達装置の側面断面図
である。FIG. 1 is a side sectional view of a power transmission device for a tractor according to the present invention.
【図2】前後進切換部と動力取出系の側面断面図であ
る。FIG. 2 is a side cross-sectional view of a forward / reverse switching unit and a power takeoff system.
【図3】図1のスケルトン図である。FIG. 3 is a skeleton diagram of FIG.
A 前後進切換部 G 動力取出部 3 走行用伝動軸 18 PTOカウンタ軸 22a 逆転アイドラギア A forward / reverse switching unit G power take-out unit 3 traveling transmission shaft 18 PTO counter shaft 22a reverse rotation idler gear
Claims (1)
独立的に構成し、トラクタの変速機構において、動力取
出系変速機構の逆転用アイドラギアを走行系変速機構の
軸上に遊嵌したことを特徴とするトラクタの動力伝達装
置。1. A traveling speed change mechanism and a power take-out speed change mechanism are independently configured, and in a speed change mechanism of a tractor, an idler gear for reverse rotation of the power take-out speed change mechanism is loosely fitted on a shaft of the speed change mechanism. A power transmission device for a tractor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992070859U JP2553411Y2 (en) | 1992-10-12 | 1992-10-12 | Tractor power transmission device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1992070859U JP2553411Y2 (en) | 1992-10-12 | 1992-10-12 | Tractor power transmission device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0635722U true JPH0635722U (en) | 1994-05-13 |
JP2553411Y2 JP2553411Y2 (en) | 1997-11-05 |
Family
ID=13443713
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1992070859U Expired - Lifetime JP2553411Y2 (en) | 1992-10-12 | 1992-10-12 | Tractor power transmission device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2553411Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102058919B1 (en) * | 2019-06-10 | 2019-12-24 | (주)한성티앤아이 | Automatic transmission for high place operation car |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011044376A2 (en) * | 2009-10-07 | 2011-04-14 | Hydreco | Power take-off |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01237225A (en) * | 1988-03-15 | 1989-09-21 | Kubota Ltd | Transmission for tractor |
-
1992
- 1992-10-12 JP JP1992070859U patent/JP2553411Y2/en not_active Expired - Lifetime
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01237225A (en) * | 1988-03-15 | 1989-09-21 | Kubota Ltd | Transmission for tractor |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102058919B1 (en) * | 2019-06-10 | 2019-12-24 | (주)한성티앤아이 | Automatic transmission for high place operation car |
Also Published As
Publication number | Publication date |
---|---|
JP2553411Y2 (en) | 1997-11-05 |
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