JPH02145108A - Power transmission device for agricultural working machine - Google Patents
Power transmission device for agricultural working machineInfo
- Publication number
- JPH02145108A JPH02145108A JP63300390A JP30039088A JPH02145108A JP H02145108 A JPH02145108 A JP H02145108A JP 63300390 A JP63300390 A JP 63300390A JP 30039088 A JP30039088 A JP 30039088A JP H02145108 A JPH02145108 A JP H02145108A
- Authority
- JP
- Japan
- Prior art keywords
- spline
- shaft
- power transmission
- fitting
- agricultural
- 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
- 230000005540 biological transmission Effects 0.000 title claims description 39
- 230000003028 elevating effect Effects 0.000 claims description 2
- 238000005452 bending Methods 0.000 description 7
- 238000013459 approach Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Agricultural Machines (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えば農用トラクタに自動連結機能を有する
３点リンクヒツチ機構を介して農作業機を着脱可能とし
、農用トラクタから農作業機に対して回転動力を自動的
に伝達、または伝達解除するようにした農作業機の動力
伝達装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention enables an agricultural machine to be attached to and detached from, for example, an agricultural tractor via a three-point link hitch mechanism having an automatic coupling function, and allows rotation from the agricultural tractor to the agricultural machine. The present invention relates to a power transmission device for agricultural machinery that automatically transmits or releases power.
従来、トラクタの後部に、昇降する３点リンクヒツチ機
構を介して農作業機を着脱可能とし、トラクタから農作
業機に対してトラクタ側および農作業機側で屈曲可能で
スプライン軸とスプライン嵌合部とを嵌合させる伝動部
を有して回転動力を伝達する動力伝達機構を設け、この
動力伝達機構を、農作業機の連結または連結解除時に動
力伝達状態または動力伝達解除状態にするようにしたも
のが知られている。さらに、上記スプライン軸の先端部
に案内突部を設けたものが例えば実開昭５５−９７２２
０号公報、実公昭６３−２５３７６号公報に、また、上
記スプライン軸のスプライン歯の先端両側部に面取案内
部を形成したものが例えば実開昭５９−１５５３２４号
公報、実開昭６２−１９６６１５号公報にそれぞれ開示
されている。Conventionally, an agricultural machine can be attached to and detached from the rear of a tractor via a three-point link hitch mechanism that moves up and down, and is bendable from the tractor to the farm machine on the tractor side and on the farm machine side, and a spline shaft and a spline fitting part are fitted together. It is known that a power transmission mechanism that transmits rotational power by having a transmission part that is connected to the agricultural machine is provided, and that the power transmission mechanism is placed in a power transmission state or a power transmission release state when the agricultural machine is connected or disconnected. ing. Furthermore, a guide protrusion is provided at the tip of the spline shaft, for example, in Japanese Utility Model Application No. 55-9722.
0, Japanese Utility Model Publication No. 63-25376, and the spline shaft in which chamfered guide portions are formed on both sides of the tip of the spline teeth are disclosed in, for example, Japanese Unexamined Utility Model Publications No. 59-155324 and Japanese Utility Model Publication No. 62-1989. Each of these is disclosed in Japanese Patent No. 196615.
上記先行技術の動力伝達機構においては、スプライン嵌
合がそれまでのものよりスムーズに行われるようになっ
たが、それでも、上記後者の場合、スプライン歯先端両
側部に面取案内部を形成しているので、嵌合時にスプラ
イン軸のスプライン歯先端中央部とスプライン嵌合部の
突条部先端中央部とが対接したときは挿入できない状態
が生じ得るものであった。In the power transmission mechanism of the prior art mentioned above, the spline fitting is performed more smoothly than in the previous one, but still, in the latter case, chamfered guide parts are formed on both sides of the tips of the spline teeth. Therefore, when the center portion of the tip of the spline tooth of the spline shaft and the center portion of the tip of the protrusion portion of the spline fitting portion come into contact with each other during fitting, a situation may occur in which insertion is not possible.
本発明は上記の事情にかんがみなされたもので、（１）
トラクタに、昇降リンク機構を介して農作業機を着脱可
能とし、トラクタから農作業機に対してトラクタ側およ
び農作業機側で屈曲可能でスプライン軸とスプライン嵌
合部とを嵌合させる伝動部を有して回転動力を伝達、ま
たは伝達解除する動力伝達機構を設けた農作業機の動力
伝達装置において、上記スプライン軸のスプライン歯先
端部に、嵌合方向に対し左右非対称に傾斜する傾斜案内
面を設けたこと、
（２）上記スプライン軸のスプライン歯前側にスプライ
ン溝径案内部を設けたこと、
（３）上記スプライン軸のスプライン歯前側にスプライ
ン溝径案内部を設け、このスプライン溝径案内部のさら
に前側に心出し案内部を設けたこと、
をそれぞれ特徴とするものである。The present invention was conceived in view of the above circumstances, and includes (1)
The agricultural working machine can be attached to and detached from the tractor via an elevating link mechanism, and has a transmission part that can be bent from the tractor to the agricultural working machine on the tractor side and the agricultural working machine side, and that fits a spline shaft and a spline fitting part. In a power transmission device for an agricultural machine equipped with a power transmission mechanism for transmitting or canceling transmission of rotational power, the spline shaft has an inclined guide surface that is inclined asymmetrically with respect to the fitting direction at the tip of the spline tooth of the spline shaft. (2) A spline groove diameter guide part is provided on the front side of the spline teeth of the spline shaft; (3) A spline groove diameter guide part is provided on the front side of the spline teeth of the spline shaft; Each of them is characterized by having a centering guide section on the front side.
上記の構成を有することによって本発明の農作業機の動
力伝達装置は、スプライン歯の非対称の傾斜案内面でス
プライン嵌合溝に案内されて、嵌合が不能となることな
くスムーズに行われる。しかも、スプライン歯の傾斜案
内面が非対称なので対接した場合に周方向に案内されて
、嵌合がよりスムーズに行われる。By having the above configuration, the power transmission device for the agricultural working machine of the present invention is guided to the spline fitting groove by the asymmetrical inclined guide surface of the spline tooth, and fitting is performed smoothly without becoming impossible. Moreover, since the inclined guide surfaces of the spline teeth are asymmetrical, when they come into contact with each other, they are guided in the circumferential direction, and the fitting is performed more smoothly.
以下、図面を参照して本発明の実施例について説明する
。Embodiments of the present invention will be described below with reference to the drawings.
第４図において、符号ｌは農用トラクタ、２はロータリ
農作業機で、農用トラクタｌの後部には、３点リンク機
構３のトップリンク４とロアリンク５が設けられている
。トップリンク４とロアリンク５にはオートヒツチハン
ガＢが連結されていて、ロータリ農作業機２のトップマ
スト７とロアリンク連結ピン８に自動的に連結できるよ
うになっている。In FIG. 4, reference numeral 1 denotes an agricultural tractor, 2 a rotary agricultural working machine, and a top link 4 and a lower link 5 of a three-point linkage mechanism 3 are provided at the rear of the agricultural tractor 1. An automatic hitch hanger B is connected to the top link 4 and the lower link 5, so that the top link 4 and the lower link 5 can be automatically connected to the top mast 7 and the lower link connecting pin 8 of the rotary agricultural working machine 2.
農用トラクタｌの後部にはＰＴＯ軸９が突出しており、
また、ロータリ農作業機２のミッションケースｌＯから
前方に向はスプライン軸からなる入力軸１１が突出して
いる。ＰＴＯ軸９と人力軸１１との間は、動力伝達機構
１２によって連結されていて回転動力が伝達されるよう
になっているが、この動力伝達機構１２は、トラクタ側
の屈曲伝動部１３と、図示しないが摺動軸を有するスラ
イド伝動軸と、農作業機側の屈曲伝動部１４とからなる
ものである。A PTO shaft 9 protrudes from the rear of the agricultural tractor l.
Further, an input shaft 11 formed of a spline shaft protrudes forward from the mission case IO of the rotary agricultural machine 2. The PTO shaft 9 and the human power shaft 11 are connected by a power transmission mechanism 12 to transmit rotational power, and this power transmission mechanism 12 is connected to a bending transmission part 13 on the tractor side, Although not shown, it consists of a slide transmission shaft having a sliding shaft and a bending transmission section 14 on the agricultural machine side.
そして、トラクタ側および農作業機側の屈曲伝動部１３
と１４とに連続して動力伝達機構１５が設けられている
。And the bending transmission part 13 on the tractor side and the agricultural machine side
A power transmission mechanism 15 is provided continuously to and 14.
動力伝達機構１５は、ロータリ農作業機２の入力軸１１
と対向して、第５図ないし第７図に示すようにスプライ
ン嵌合部１６を、上記屈曲伝動部１４と一体的に連結し
てベア゛リング１７によって回転自在に支持しており、
ベアリング１７のホルダ１７ａは、オートヒツチハンガ
６に固定され雌型に屈曲した支持板１８に対し前後方向
および上下方向の三次元方向にわずかに回動可能に支持
されている。支持板１８の上部には支持孔１８ａが穿設
され、この支持孔１８ａに支持ボルト１９が挿通されて
いる。支持ポル）１９は、支持板１８の上側においてば
ね２０．ナツト２１、ロックナツト２２によって上下調
節可能であり、支持板１８下側の下端に、正面視逆Ｕ字
状をした回転支持金具２３の上端を固着している。この
回転支持金具２３には、ピン２４を介してホルダ１７ａ
の外周上端に固着したブラケット２５が回動可能に支持
されている。ホルダ１７ａの外周左右両端には一対の支
持ピン２８．２８が突設されている。この支持ピン２Ｂ
は側面形状が長楕円形をしており、支持板１８から垂下
するようにして支持板１８に固定された側板２７の切欠
き穴２Ｂに、間隙１を有して嵌挿されている。The power transmission mechanism 15 is connected to the input shaft 11 of the rotary agricultural machine 2.
Opposed to this, as shown in FIGS. 5 to 7, a spline fitting portion 16 is integrally connected to the bending transmission portion 14 and rotatably supported by a bearing 17,
The holder 17a of the bearing 17 is supported by a support plate 18 fixed to the auto hit hanger 6 and bent in a female shape so as to be slightly rotatable in the three-dimensional directions of front and rear directions and up and down directions. A support hole 18a is formed in the upper part of the support plate 18, and a support bolt 19 is inserted through the support hole 18a. The support plate 19 has a spring 20. It can be adjusted up and down by nuts 21 and lock nuts 22, and the upper end of a rotation support fitting 23, which is shaped like an inverted U when viewed from the front, is fixed to the lower end of the lower side of the support plate 18. A holder 17a is attached to this rotation support fitting 23 via a pin 24.
A bracket 25 fixed to the upper end of the outer periphery is rotatably supported. A pair of support pins 28, 28 are protruded from both left and right ends of the outer periphery of the holder 17a. This support pin 2B
has an oblong side shape, and is fitted with a gap 1 into a notch hole 2B of a side plate 27 fixed to the support plate 18 so as to hang down from the support plate 18.
一方、スプライン嵌合部１Ｂの正面側には、外側に向は
テーバを有するガイトロ２９が開口しており、このガイ
トロ２９に続いてガイド孔３０が設けられて屈曲伝動部
１４に形成したスプライン溝３１に連通している。上記
ガイド孔３０には、その周方向から等間隔に３個のボル
トからなるガイド体３２がワッシャを介して螺装され、
その先端は球面Ｈａをなしていて入力軸１１のスプライ
ン溝をガイドするようにしである。ガイド体３２および
ガイトロ２９の外周はカバー３３により覆われている。On the other hand, on the front side of the spline fitting part 1B, a guide hole 29 having an outwardly tapered opening is opened, and a guide hole 30 is provided following the guide hole 29, and a spline groove is formed in the bending transmission part 14. It is connected to 31. A guide body 32 consisting of three bolts is screwed into the guide hole 30 through washers at equal intervals from the circumferential direction.
The tip has a spherical surface Ha and is designed to guide the spline groove of the input shaft 11. The outer circumferences of the guide body 32 and the guide rod 29 are covered with a cover 33.
他方、上記入力軸１１は、第１図に示すように、そのス
プライン歯３４を軸先端まで張出させ、このスプライン
歯３４の先端部に、嵌合方向に対し左右非対称に傾斜す
る傾斜案内面３５を形成している。On the other hand, as shown in FIG. 1, the input shaft 11 has its spline teeth 34 extending to the tip of the shaft, and the tip of the spline teeth 34 is provided with an inclined guide surface that is inclined asymmetrically with respect to the fitting direction. 35 is formed.
同図において符号３６はスプライン溝、３７は環状凹溝
である。なお、上記傾斜案内面３５は、上記実施例の傾
斜方向と反対の非対称に傾斜させてもよいものである。In the figure, reference numeral 36 is a spline groove, and 37 is an annular groove. In addition, the said inclined guide surface 35 may be made to incline asymmetrically opposite to the inclination direction of the said Example.
このような構成の農作業機の動力伝達装置においては、
農用トラクタｌにロークリ農作業機２を連結する際、３
点リンク機構３のロアリンク５を作動させてオートヒツ
チハンガ６のフック部６ａをロークリ農作業機２のトッ
プマスト７に係合させ、ロークリ農作業機を持上げるよ
うにすると、ロークリ農作業機２は下部がわずかに前方
に移動してオートヒツチハンガθのロアリンク連結部８
ｂとロータリ農作業機２のロアリンク連結ピン８とが係
合して、ロークリ農作業機２が農用トラクタ［に自動的
に連結される。In the power transmission device of agricultural machinery with such a configuration,
When connecting the low-rise agricultural machine 2 to the agricultural tractor l,
When the lower link 5 of the point linkage mechanism 3 is operated to engage the hook portion 6a of the automatic hitch hanger 6 with the top mast 7 of the low-rise agricultural machine 2 and lift the low-rise agricultural machine 2, the low-rise agricultural machine 2 is lifted up. moves slightly forward and lower link connection part 8 of auto hitch hanger θ
b engages with the lower link connecting pin 8 of the rotary agricultural working machine 2, and the rotary agricultural working machine 2 is automatically connected to the agricultural tractor.
この農用トラクタｌにロークリ農作業機２が連結される
とき、動力遮断状態１５のスプライン嵌合部ｌＢは、ロ
ータリ農作業機２の人力軸１１と対向して接近し、入力
軸１１の先端がガイトロ２９に入るようになるが、この
とき上下左右に多少の芯ずれがあっでも、スプライン嵌
合部ＩＢは支持ボルト１９を中心に支持ピン２Ｂと切欠
き穴２８との間隙りの範囲で左右に回動し、また、ビン
２４を中心に上下に回動して芯出しされてガイド孔３０
に入り、ここでガイド体３２の球面３２ａにより入力軸
１１のスプライン溝３Ｂと摺接するようにして案内され
、さらにスプライン歯３４の非対称の傾斜案内面３５に
案内されてスプライン溝３１に挿入され動力伝達状態と
なる（第８図参照）。When the rotary agricultural working machine 2 is connected to the agricultural tractor l, the spline fitting part IB in the power cutoff state 15 approaches the human power shaft 11 of the rotary agricultural working machine 2, and the tip of the input shaft 11 approaches the manpower shaft 11 of the rotary agricultural working machine 2. At this time, even if there is some misalignment in the vertical and horizontal directions, the spline fitting part IB can be rotated left and right around the support bolt 19 within the range of the gap between the support pin 2B and the notch hole 28. The guide hole 30 is centered by rotating vertically around the bin 24.
Here, it is guided by the spherical surface 32a of the guide body 32 so as to be in sliding contact with the spline groove 3B of the input shaft 11, and further guided by the asymmetrical inclined guide surface 35 of the spline tooth 34, inserted into the spline groove 31, and the power is It enters a transmission state (see Figure 8).
そして、ＰＴＯ軸９を回転させると、その回転動力は屈
曲伝動部１３．１４、スプライン嵌合部１６を介して人
力軸１１に伝達され、ロータリ農作業機２の作業部を駆
動させる。農用トラクタ１とロータリ農作業機２の連結
を解除するときは、ロータリ農作業機２の駆動および農
用トラクタ１の走行を停止し、ロークリ農作業機２を接
地した状態でロアリンク連結部６Ｃとロアリンク連結ビ
ン８との連結を解除すると共に、フック８ａ、！、 ト
ップマスト７との係合を解除して農用トラクタ１とロー
モリ農農作業機２との連結を解除すると、これと同時に
動力遮断状態１５のスプライン嵌合部１６と入力軸１１
との嵌合は解除されて動力遮断状態となる。When the PTO shaft 9 is rotated, the rotational power is transmitted to the human power shaft 11 via the bending transmission part 13, 14 and the spline fitting part 16, and drives the working part of the rotary agricultural machine 2. When disconnecting the agricultural tractor 1 and the rotary agricultural working machine 2, stop the driving of the rotary agricultural working machine 2 and the running of the agricultural tractor 1, and connect the lower link connecting part 6C with the lower link connecting part 6C with the rotary agricultural working machine 2 grounded. At the same time as releasing the connection with the bottle 8, the hook 8a,! , When the engagement with the top mast 7 is released and the connection between the agricultural tractor 1 and the low-moly agricultural working machine 2 is released, at the same time, the spline fitting part 16 and the input shaft 11 in the power cut-off state 15 are released.
The mating with the power supply is released and the power is cut off.
上記ガイド体３２の球面３２ａが摩耗したときには、ガ
イド体３２のねじを緩めて抜取り、新しいものと交換す
ればよい。When the spherical surface 32a of the guide body 32 is worn out, the guide body 32 can be removed by loosening the screws and replaced with a new one.
上記入力軸１１は、第２図に示すように、第１図の実施
例のスプライン溝３６を直径とする軸先端部を、スプラ
イン歯３４の前側にわずかに突出させて、スプライン溝
径案内部３Ｂを形成してもよいものである。この第２の
実施例の場合においては、入力軸１１がスプライン溝径
案内部３８で案内されてのちスプライン歯３４（傾斜案
内面３５）がスプライン嵌合部ＩＢとよりスムーズ、か
つ確実に嵌合する。As shown in FIG. 2, the input shaft 11 has a shaft tip whose diameter is the spline groove 36 of the embodiment shown in FIG. 3B may be formed. In the case of this second embodiment, after the input shaft 11 is guided by the spline groove diameter guide part 38, the spline teeth 34 (slanted guide surface 35) are fitted into the spline fitting part IB more smoothly and reliably. do.
第３図に示す本発明の第３の実施例のものは、上記第２
の実施例のスプライン溝径案内部３８のさらに前側に截
頭円錐形の心出し案内部３９を設けたものである。この
第３の実施例においては、上記第２の実施例のものより
、心出し案内部３９による方向性がよくなって確実に案
内され、スプライン嵌合部１６との嵌合がよりスムーズ
に行われる。The third embodiment of the present invention shown in FIG.
A truncated conical centering guide part 39 is provided further in front of the spline groove diameter guide part 38 of the embodiment. In this third embodiment, the directionality by the centering guide portion 39 is improved and the guide is reliably performed, and the fitting with the spline fitting portion 16 is performed more smoothly than in the second embodiment. be exposed.
なお、上記動力伝達機構１５は、トラクタｌにロータリ
農作業機２を実際に連結する前に、スプライン嵌合部ｔ
ｅと入力軸１１を対向状態にして、ナツト２１およびロ
ックナツト２２によりスプライン嵌合部ｌＢを上下調節
して予め芯合せしておく。この際、スプライン嵌合部ｌ
Ｂと入力軸ｉｔがそれぞれの左右中央位置に設けられ、
かつ傾斜案内面３５．スプライン溝径案内部３８．心出
し案内部３９等が設けられているので、左右の芯ずれは
ほとんどない。また、上記３点リンク機構３に代えて２
点リンク機構にしてもよく、さらに、ロータリ農作業機
２に代えて他の農作業機にしてもよいものである。Note that the power transmission mechanism 15 is connected to the spline fitting portion t before actually connecting the rotary agricultural machine 2 to the tractor l.
e and the input shaft 11 are placed in a facing state, and the spline fitting portion 1B is vertically adjusted using the nut 21 and the lock nut 22 to align the center of the spline fitting portion 1B in advance. At this time, spline fitting part l
B and input shaft IT are provided at the center position of each left and right,
and inclined guide surface 35. Spline groove diameter guide part 38. Since the centering guide portion 39 and the like are provided, there is almost no left-right misalignment. Also, in place of the three-point linkage mechanism 3, two
A point link mechanism may be used, and the rotary agricultural machine 2 may be replaced with another agricultural machine.
以上説明したように、本発明の農作業機の動力伝達装置
によれば、スプライン軸のスプライン歯先端に非対称の
傾斜案内面を設けたので、歯の先端が対峙することなく
スプライン溝へのスプライン軸のガイドがスムーズに行
われて無理な（嵌合できる。As explained above, according to the power transmission device for an agricultural working machine of the present invention, since the asymmetrical inclined guide surface is provided at the tip of the spline tooth of the spline shaft, the tip of the spline shaft can be connected to the spline groove without the tips of the teeth facing each other. The guide is smooth and the mating is possible.
また、スプライン歯の前側にスプライン溝径案内部を設
けたので、スプライン嵌合部へのガイドが確実となって
嵌合がよりスムーズに行われる。Furthermore, since the spline groove diameter guide portion is provided on the front side of the spline tooth, the guide to the spline fitting portion is ensured, and fitting is performed more smoothly.
さらに、スプライン溝径案内部の前側に心出し案内部を
設けたので、スプライン嵌合部へのガイドがより確実に
行われて、嵌合がより一層スムーズに行われる。Furthermore, since the centering guide part is provided on the front side of the spline groove diameter guide part, the guide to the spline fitting part is more reliably performed, and the fitting is performed even more smoothly.
第１図は本発明の第１の実施例を示すスプライン軸の部
分斜視図、第２図は本発明の第２の実施例を示すスプラ
イン軸の部分斜視図、第３図は本発明の第３の実施例を
示すスプライン軸の部分斜視図、第４図は本発明を適用
した農作業機の動力伝達装置の概略側面図、第５図はス
プライン嵌合部の正面図、第６図は同側面図、第７図は
同側断面図、第８図はスプライン嵌合部と入力軸が嵌合
した状態の側断面図である。
１・・・農用トラクタ、２・・・ロータリ農作業機、３
・・・３点リンク機構、４・・・トップリンク、５・・
・ロアリンク、Ｂ・・・オートヒツチハンガ、７・・・
トップマスト、８・・・ロアリンク連結ピン、９・・・
ＰＴＯ軸、ｌＯ・・・ミツシランケース、ｌｌ・・・入
力軸、１２・・・動力伝達機構、ｔａ、 １４・・・屈
曲伝動部、１５・・・動力伝達機構、１Ｂ・・・スプラ
イン嵌合部、１７・・・ベアリング、１７ａ・・・ホル
ダ、１８・・・支持板、１８ａ・・・支持孔、１９・・
・支持ボルト、２０・・・ばね、２１・・・ナツト、２
２・・・ロックナツト、２３・・・回転支持金具、２４
・・・ピン、２５・・・ブラケット、２Ｂ・・・支持ピ
ン、２７・・・側板、２８・・・切欠き穴、２９・・・
ガイトロ、３０・・・ガイド孔、ａｔ、 ３Ｂ・・・ス
プライン溝、３２・・・ガイド体、３３・・・カバー、
３４・・・スプライン歯、３５・・・傾斜案内面、３７
・・・環状凹部、３８・・・スプライン溝径案内部、３
９・・・心出し案内部。
特許出願人 小橋工業株式会社
代理人 弁理士 小 橋 信 浮
量FIG. 1 is a partial perspective view of a spline shaft showing a first embodiment of the invention, FIG. 2 is a partial perspective view of a spline shaft showing a second embodiment of the invention, and FIG. 3 is a partial perspective view of a spline shaft showing a second embodiment of the invention. Embodiment 3 is a partial perspective view of a spline shaft showing a spline shaft, FIG. 4 is a schematic side view of a power transmission device for an agricultural machine to which the present invention is applied, FIG. 5 is a front view of a spline fitting part, and FIG. A side view, FIG. 7 is a sectional view of the same side, and FIG. 8 is a side sectional view of a state in which the spline fitting portion and the input shaft are fitted. 1... Agricultural tractor, 2... Rotary agricultural machine, 3
...3-point link mechanism, 4...Top link, 5...
・Lower link, B... Auto hitch hanger, 7...
Top mast, 8...Lower link connection pin, 9...
PTO shaft, lO... Mitsushiran case, ll... input shaft, 12... power transmission mechanism, ta, 14... bending transmission part, 15... power transmission mechanism, 1B... spline fitting Joint part, 17...Bearing, 17a...Holder, 18...Support plate, 18a...Support hole, 19...
・Support bolt, 20... Spring, 21... Nut, 2
2... Lock nut, 23... Rotation support fitting, 24
... Pin, 25... Bracket, 2B... Support pin, 27... Side plate, 28... Notch hole, 29...
Gytro, 30... Guide hole, at, 3B... Spline groove, 32... Guide body, 33... Cover,
34... Spline tooth, 35... Inclined guide surface, 37
...Annular recess, 38...Spline groove diameter guide part, 3
9... Centering guide section. Patent applicant: Kobashi Kogyo Co., Ltd. Agent Patent attorney: Nobu Kobashi
Claims (3)
着脱可能とし、トラクタから農作業機に対してトラクタ
側および農作業機側で屈曲可能でスプライン軸とスプラ
イン嵌合部とを嵌合させる伝動部を有して回転動力を伝
達、または伝達解除する動力伝達機構を設けた農作業機
の動力伝達装置において、 上記スプライン軸のスプライン歯先端部に、嵌合方向に
対し左右非対称に傾斜する傾斜案内面を設けたことを特
徴とする農作業機の動力伝達装置。(1) A transmission unit that allows an agricultural machine to be attached to and detached from the tractor via an elevating link mechanism, is bendable from the tractor to the agricultural machine on the tractor side and on the agricultural machine side, and fits the spline shaft and the spline fitting part. In a power transmission device for an agricultural machine equipped with a power transmission mechanism for transmitting or canceling the transmission of rotational power, the spline shaft has an inclined guide surface that is inclined asymmetrically with respect to the fitting direction at the tip of the spline teeth of the spline shaft. A power transmission device for an agricultural machine, characterized by being provided with.
ン溝径案内部を設けたことを特徴とする請求項（１）記
載の農作業機の動力伝達装置。(2) The power transmission device for an agricultural machine according to claim (1), characterized in that a spline groove diameter guide portion is provided on the front side of the spline teeth of the spline shaft.
ン溝径案内部を設け、このスプライン溝径案内部のさら
に前側に心出し案内部を設けたことを特徴とする請求項
（１）および（２）記載の農作業機の動力伝達装置。(3) Claims (1) and (2) characterized in that a spline groove diameter guide part is provided on the front side of the spline teeth of the spline shaft, and a centering guide part is provided further in front of the spline groove diameter guide part. The power transmission device for the agricultural machine described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63300390A JP2673267B2 (en) | 1988-11-28 | 1988-11-28 | Power transmission device for agricultural machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63300390A JP2673267B2 (en) | 1988-11-28 | 1988-11-28 | Power transmission device for agricultural machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02145108A true JPH02145108A (en) | 1990-06-04 |
| JP2673267B2 JP2673267B2 (en) | 1997-11-05 |
Family
ID=17884206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63300390A Expired - Fee Related JP2673267B2 (en) | 1988-11-28 | 1988-11-28 | Power transmission device for agricultural machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2673267B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008180264A (en) * | 2007-01-24 | 2008-08-07 | Kobashi Kogyo Co Ltd | Dog clutch |
| CN108860348A (en) * | 2018-08-17 | 2018-11-23 | 西北农林科技大学 | A kind of levelling mechanism of the mountainous region crawler tractor based on splined shaft transmission |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101615820B1 (en) | 2014-09-25 | 2016-05-12 | 노계훈 | Jonit for tractor farm working machinery binding |
-
1988
- 1988-11-28 JP JP63300390A patent/JP2673267B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008180264A (en) * | 2007-01-24 | 2008-08-07 | Kobashi Kogyo Co Ltd | Dog clutch |
| CN108860348A (en) * | 2018-08-17 | 2018-11-23 | 西北农林科技大学 | A kind of levelling mechanism of the mountainous region crawler tractor based on splined shaft transmission |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2673267B2 (en) | 1997-11-05 |
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