JPH0779567B2 - Equipment for attaching work equipment to tractors - Google Patents
Equipment for attaching work equipment to tractorsInfo
- Publication number
- JPH0779567B2 JPH0779567B2 JP62131011A JP13101187A JPH0779567B2 JP H0779567 B2 JPH0779567 B2 JP H0779567B2 JP 62131011 A JP62131011 A JP 62131011A JP 13101187 A JP13101187 A JP 13101187A JP H0779567 B2 JPH0779567 B2 JP H0779567B2
- Authority
- JP
- Japan
- Prior art keywords
- engaging
- tractor
- work machine
- centering
- power transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Agricultural Machines (AREA)
Description
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点リンクヒッ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伝
達、または伝達解除するようにしたトラクタへの作業機
装着装置に関するものである。The present invention allows a farm work machine to be attached to and detached from a farm tractor through a three-point link hitch mechanism having an automatic connection function, and transmits the rotary power from the farm tractor to the farm work machine or releases the transmission of the rotary power. The present invention relates to a working machine mounting device.
【従来の技術】 従来、トラクタの後部に、自動連結機能を有する３リン
クヒッチ機構を介して作業機を着脱可能とし、トラクタ
から作業機に対してトラクタ側および作業機側で屈曲可
能な屈曲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、作業機の連結または連
結解除時に自動的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、例えば特開昭62−65602号
公報により知られている。この先行技術の動力伝達機構
は、一方の屈曲伝動部に爪クラッチを設けて係脱する構
成であった。2. Description of the Related Art Conventionally, a work machine can be attached to and detached from a rear portion of a tractor through a three-link hitch mechanism having an automatic connection function, and the bending transmission can be bent from the tractor to the work machine on the tractor side and the work machine side. A power transmission mechanism having a portion for transmitting rotational power is provided, and this power transmission mechanism is automatically set to a power transmission state or a power transmission release state when the working machine is connected or disconnected, for example, It is known from JP 62-65602 A. The power transmission mechanism of this prior art has a structure in which one of the bending transmission portions is provided with a pawl clutch to engage and disengage.
上記先行技術の動力伝達機構は、爪クラッチを自動的に
係合、係合解除する関係で、特に係合する場合に芯出し
が重要となり、±3mm程度の誤差しか許容されない。こ
のため、作業機連結装置および動力伝達機構に高精度な
構造が要求される。また、トラクタと作業機は、相互に
精度よく連結しなければならないので、予めそれぞれの
トラクタ、作業機に適合したものを用意しなければなら
ず、汎用性がなかった。In the power transmission mechanism of the above-mentioned prior art, centering is important particularly in the case of engagement because the pawl clutch is automatically engaged and disengaged, and an error of about ± 3 mm is allowed. Therefore, a highly accurate structure is required for the work implement connecting device and the power transmission mechanism. Further, since the tractor and the working machine must be connected to each other with high accuracy, it is necessary to prepare a tractor and a working machine suitable for each tractor in advance, which is not versatile.
本発明は上記の事情に鑑がみなされたもので、トラクタ
１に、自動連結機能を有するオートヒッチハンガ６を連
結したリンク機構３を介して作業機２を着脱可能とし、
トラクタ１から作業機２に対してトラクタ１側および作
業機２側で屈曲可能な屈曲伝動部13,15、および中央部
に先端が細くなるテーパ状の芯出し突起17を有し、かつ
操作レバー19により水平方向に所定範囲摺動可能の係合
部材20と、この係合部材20の芯出し突起17と係合する芯
出し孔21を有する被係合部材25とからなり、回転動力を
伝達、または伝達解除する動力伝達機構12を設けた作業
機装着装置において、 上記動力伝達機構12は、屈曲伝動部15側で、作業機２の
入力軸11に嵌挿され、芯出し突起17の外周部に複数の係
合突起18を設けた係合部材20と、屈曲伝動部15の一端に
嵌挿され、上記オートヒッチハンガ６に回転自在、かつ
ゴムブッシュ25を介して弾性支持されると共に、芯出し
孔21の外周部に上記係合突起18と係合する複数の係合溝
22を設けた被係合部材25とを、相対向して配設したこと
を特徴とするものである。The present invention has been made in view of the above circumstances, and allows the working machine 2 to be attached and detached via the link mechanism 3 in which the auto hitch hanger 6 having an automatic connecting function is connected to the tractor 1.
Bending transmission parts 13 and 15 that can be bent from the tractor 1 to the work machine 2 on the tractor 1 side and the work machine 2 side, and a tapered centering protrusion 17 having a tapered tip in the central part, and an operating lever. An engaging member 20 that is slidable in a predetermined range in the horizontal direction by 19 and an engaged member 25 having a centering hole 21 that engages with the centering protrusion 17 of the engaging member 20 are used to transmit rotational power. Alternatively, in the working machine mounting device provided with the power transmission mechanism 12 for releasing the transmission, the power transmission mechanism 12 is inserted into the input shaft 11 of the working machine 2 on the bending transmission portion 15 side, and the outer periphery of the centering protrusion 17 is provided. The engaging member 20 provided with a plurality of engaging projections 18 and the bending transmission portion 15 are fitted and inserted into one end of the bending transmission portion 15, and are rotatably supported by the auto hitch hanger 6 and elastically supported by the rubber bush 25. A plurality of engaging grooves that engage with the engaging protrusions 18 on the outer peripheral portion of the centering hole 21.
The engaged member 25 provided with 22 is arranged so as to face each other.
上記の構成を有することによって本発明の作業機装着装
置は、動力伝達機構の係合時に特に芯出し精度を要求さ
れることがなく、従って、トラクタ、作業機の汎用性が
高められる。With the above configuration, the working machine mounting apparatus of the present invention does not require centering accuracy when the power transmission mechanism is engaged, and thus the versatility of the tractor and the working machine is enhanced.
以下、図面を参照して本発明の実施例について説明す
る。 第１図において、符号１は農用トラクタ、２はロータリ
農作業機で、農用トラクタ１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にはオートヒッチハ
ンガ６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。 農用トラクタ１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10から前方
に向け入力軸11が突出している。PTO軸９と入力軸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、スライド伝動軸14
と、作業機側の屈曲伝動部15とからなるものである。そ
して、トラクタ側の屈曲伝動部13はシングルジョイント
からなり、作業機側の屈曲伝動部15もシングルジョイン
トからなるが、このジョイント15には、前記入力軸11と
の間に動力接断機構16が設けられている。 動力接断機構16は、第２図にも示すように、ロータリ農
作業機２の入力軸11に嵌挿され、中央部に先端が細くな
るテーパ状の芯出し突起17を有すると共に、その外周部
に複数の係合突起18を有し、かつ入力軸11に嵌挿したま
ま操作レバー19により水平方向に所定範囲摺動可能の係
合部材20と、上記係合部材20の芯出し突起17および係合
突起18と係合する芯出し孔21および係合溝22を有し、か
つ係合部材20と対向するようオートヒッチハンガ６にベ
アリング23およびゴムブッシュ24を介して回転自在およ
び弾性支持され、屈曲伝動部15の一端に嵌挿した被係合
部25と、により構成れている。 また、前記係合突起18はその断面が第２図に示すように
Ｄ字状をしていて、係合溝22との係合時にラジアル荷重
の伝動効率を向上するようにし、さらに、係合溝22の外
周縁部は、係合突起18の係合が容易となるよう丸味を帯
びている。 このような構成のトラクタへの作業機装着装置におい
て、農用トラクタ１にロータリ農作業機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
トヒッチハンガ６のフック部6aをロータリ農作業機２の
トップマスト７に係合させ、ロータリ農作業機を持上げ
るようにすると、ロータリ農作業機２は下部がわずかに
前方に移動してオートヒッチハンガ６のロアリンク連結
ピン6bとロータリ農作業機２のロアリンク連結部８とが
係合して、ロータリ農作業機２が農用トラクタ１に自動
的に連結される。 この農用トラクタ１にロータリ農作業機２が連結された
とき、動力接断機構16のロータリ農作業機２の入力軸11
に嵌挿された係合部材20と、オートヒッチハンガ６に弾
性支持された被係合部25とは接近して対向しており、作
業者は操作レバー19を時計方向に回動して芯出し突起1
7,係合突起18と芯出し孔21,係合溝22とを係合させる。
この係合動作は、被係合部材25がゴムブッシュ24を介し
て支持され、しかも芯出し突起17,芯出し孔21が設けら
れているので、多少の芯ずれがあっても容易に係合する
ことができる。また、係合突起18と係合溝22とが対向し
ていない場合には、被係合部材25を手で回動させて対向
状態にすればよい。 そして、PTO軸９を回転させると、その回転動力はシン
グルジョイント13,スライド伝動軸14,シングルジョイン
ト15,動力接断機構16を介して入力軸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、操作レバー19を反時計方向に回動し
て係合部材20と被係合部材25との係合を解除し、ロアリ
ンク連結ピン6cとロアリンク連結部８との連結を解除す
ると共に、フック6aとトップマスト７との係合を解除し
て農用トラクタ１とロータリ農作業機２との連結を解除
する。 なお、上記シングルジョイント13,15に代えて、等速ボ
ールジョイント、またはニードルベアリング、ローラを
用いた等速ジョイントとしてもよい。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。Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, reference numeral 1 is an agricultural tractor, 2 is a rotary agricultural work machine, and a top link 4 and a lower link 5 of a three-point link mechanism 3 are provided at the rear of the agricultural tractor 1. An auto hitch hanger 6 is connected to the top link 4 and the lower link 5 so that the top mast 7 and the lower link connecting pin 8 of the rotary agricultural work machine 2 can be automatically connected. A PTO shaft 9 projects from the rear part of the agricultural tractor 1, and an input shaft 11 projects forward from the mission case 10 of the rotary agricultural work machine 2. The PTO shaft 9 and the input shaft 11 are connected by a power transmission mechanism 12 to transmit rotational power. This power transmission mechanism
12 is a bending transmission portion 13 on the tractor side and a slide transmission shaft 14
And the bending transmission section 15 on the working machine side. The bending transmission portion 13 on the tractor side is formed of a single joint, and the bending transmission portion 15 on the working machine side is also formed of a single joint.The joint 15 has a power disconnection mechanism 16 between the input shaft 11 and the power transmission / disconnection mechanism 16. It is provided. As shown in FIG. 2, the power connection / disconnection mechanism 16 is fitted into the input shaft 11 of the rotary agricultural working machine 2 and has a tapered centering protrusion 17 having a thin tip at the center thereof and an outer peripheral portion thereof. An engaging member 20 having a plurality of engaging protrusions 18 and capable of sliding in a predetermined range in the horizontal direction by an operating lever 19 while being fitted into the input shaft 11, and a centering protrusion 17 of the engaging member 20 and It has a centering hole 21 and an engaging groove 22 for engaging with the engaging protrusion 18, and is rotatably and elastically supported by the auto hitch hanger 6 via a bearing 23 and a rubber bush 24 so as to face the engaging member 20. , And an engaged portion 25 fitted and inserted in one end of the bending transmission portion 15. The engaging projection 18 has a D-shaped cross section as shown in FIG. 2 to improve the transmission efficiency of radial load when engaging with the engaging groove 22. The outer peripheral edge portion of the groove 22 is rounded so that the engagement protrusion 18 can be easily engaged. In the apparatus for mounting a working machine on a tractor having such a structure, when the rotary farm working machine 2 is connected to the agricultural tractor 1, the lower link 5 of the three-point link mechanism 3 is operated so that the hook portion 6a of the automatic hitch hanger 6 is rotated. When engaging the top mast 7 of the farm work machine 2 and lifting the rotary farm work machine, the lower part of the rotary farm work machine 2 moves slightly forward and the lower link connecting pin 6b of the automatic hitch hanger 6 and the rotary farm work machine. The lower link connecting part 8 of 2 is engaged, and the rotary farm work machine 2 is automatically connected to the agricultural tractor 1. When the rotary farm work machine 2 is connected to the agricultural tractor 1, the input shaft 11 of the rotary farm work machine 2 of the power disconnection mechanism 16 is connected.
The engaging member 20 that is fitted in and the engaging portion 25 elastically supported by the auto hitch hanger 6 are close to and face each other, and the operator turns the operation lever 19 in the clockwise direction to move the core. Protruding protrusion 1
7. Engage the engagement protrusion 18, the centering hole 21, and the engagement groove 22.
In this engaging operation, the engaged member 25 is supported via the rubber bush 24, and the centering protrusion 17 and the centering hole 21 are provided, so that the engaged member is easily engaged even if there is some misalignment. can do. Further, when the engagement protrusion 18 and the engagement groove 22 are not opposed to each other, the engaged member 25 may be manually rotated to be opposed to each other. Then, when the PTO shaft 9 is rotated, the rotational power is transmitted to the input shaft 11 via the single joint 13, the slide transmission shaft 14, the single joint 15, and the power connection / disconnection mechanism 16, so that the working portion of the rotary farm work machine 2 is operated. Drive it. When the connection between the agricultural tractor 1 and the rotary agricultural work machine 2 is released, the driving of the rotary agricultural work machine 2 and the traveling of the agricultural tractor 1 are stopped, and the operation lever 19 is rotated counterclockwise to engage the engaging member 20 and the engaged member 20. The engagement with the engagement member 25 is released, the connection between the lower link connecting pin 6c and the lower link connecting portion 8 is released, and the engagement between the hook 6a and the top mast 7 is released, and the agricultural tractor 1 and the rotary tractor. The connection with the agricultural work machine 2 is released. Instead of the single joints 13 and 15, constant velocity ball joints or constant velocity joints using needle bearings and rollers may be used. Further, the three-point link mechanism 3 may be replaced by a two-point link mechanism, and the rotary farm work machine 2 may be replaced by another farm work machine.
以上説明したように、本発明のトラクタへの作業機装着
装置によれば、トラクタ１側から作業機２側へ回転動力
を伝達する動力伝達機構12の屈曲伝動部15に芯出し突起
17、係合突起18を有する係合部材20と、芯出し孔21、係
合溝22を有する被係合部材25とを対向させ、かつ被係合
部材25を弾性支持したので、トラクタ１に作業機２を装
着したとき、被係合部材25に対して係合部材20を容易
に、かつ確実に係合して動力伝達が容易に行えるように
なり、しかも、厳密な芯出しを必要としないので汎用性
がある。また、作業機２の連結解除時には、動力伝達を
容易に解除して動力伝達が遮断され、動力伝達の接続、
遮断操作が容易に、かつ迅速に行うことができる。As described above, according to the work implement mounting device for the tractor of the present invention, the centering protrusion is provided on the bending transmission portion 15 of the power transmission mechanism 12 for transmitting the rotational power from the tractor 1 side to the work implement 2 side.
17, the engaging member 20 having the engaging protrusion 18 and the engaged member 25 having the centering hole 21 and the engaging groove 22 face each other, and the engaged member 25 is elastically supported. When the working machine 2 is mounted, the engaging member 20 can be easily and surely engaged with the engaged member 25 to easily transmit power, and strict centering is required. It is versatile because it does not. Further, when the working machine 2 is disconnected, the power transmission is easily released and the power transmission is cut off, and the connection of the power transmission,
The shutoff operation can be performed easily and quickly.
第１図は本発明の実施例を示す作業機装着装置の概略側
面図、第２図は係合部材と被係合部材とが係合した状態
の拡大断面図である。 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、６…オ
ートヒッチハンガ、７…トップマスト、８…ロアリンク
連結部、９…PTO軸、10…ミッションケース、11…入力
軸、12…動力伝達機構、13…トラクタ側屈曲伝動部（シ
ングルジョイント）、14…スライド伝動軸、15…作業機
側屈曲伝動部（シングルジョイント）、16…動力接断機
構、17…芯出し突起、18…係合突起、19…操作レバー、
20…係合部材、21…芯出し孔、22…係合溝、23…ベアリ
ング、24…ゴムブッシュ、25…被係合部材。FIG. 1 is a schematic side view of a working machine mounting apparatus showing an embodiment of the present invention, and FIG. 2 is an enlarged sectional view of a state in which an engaging member and an engaged member are engaged with each other. 1 ... Agricultural tractor, 2 ... Rotary agricultural working machine, 3 ... Three-point link mechanism, 4 ... Top link, 5 ... Lower link, 6 ... Auto hitch hanger, 7 ... Top mast, 8 ... Lower link connection part, 9 ... PTO shaft , 10 ... Mission case, 11 ... Input shaft, 12 ... Power transmission mechanism, 13 ... Tractor side bending transmission part (single joint), 14 ... Sliding transmission shaft, 15 ... Working machine side bending transmission part (single joint), 16 ... Power disconnecting mechanism, 17 ... centering protrusion, 18 ... engaging protrusion, 19 ... operating lever,
20 ... Engaging member, 21 ... Centering hole, 22 ... Engaging groove, 23 ... Bearing, 24 ... Rubber bush, 25 ... Engaged member.
Claims (1)
オートヒッチハンガ（６）を連結したリンク機構（３）
を介して作業機（２）を着脱可能とし、トラクタ（１）
から作業機（２）に対してトラクタ（１）側および作業
機（２）側で屈曲可能な屈曲伝動部（13,15）、および
中央部に先端が細くなるテーパ状の芯出し突起（17）を
有し、かつ操作レバー（19）により水平方向に所定範囲
摺動可能の係合部材（20）と、この係合部材（20）の芯
出し突起（17）と係合する芯出し孔（21）を有する被係
合部材（25）とからなり、回転動力を伝達、または伝達
解除する動力伝達機構（12）を設けた作業機装着装置に
おいて、 上記動力伝達機構（12）は、屈曲伝動部（15）側で、作
業機（２）の入力軸（11）に嵌挿され、芯出し突起（1
7）の外周部に複数の係合突起（18）を設けた係合部材
（20）と、屈曲伝動部（15）の一端に嵌挿され、上記オ
ートヒッチハンガ（６）に回転自在、かつゴムブッシュ
（25）を介して弾性支持されると共に、芯出し孔（21）
の外周部に上記係合突起（18）と係合する複数の係合溝
（22）を設けた被係合部材（25）とを、相対向して配設
したことを特徴とするトラクタへの作業機装着装置。1. A link mechanism (3) in which an automatic hitch hanger (6) having an automatic connecting function is connected to a tractor (1).
The work machine (2) can be attached and detached via the tractor (1).
From the work machine (2) to the tractor (1) side and the work machine (2) side, and a bending transmission section (13, 15) that can be bent, and a tapered centering protrusion (17) having a tapered tip in the central part. ), Which is slidable horizontally within a predetermined range by the operating lever (19), and a centering hole for engaging with the centering protrusion (17) of the engaging member (20). A work machine mounting device comprising a engaged member (25) having (21) and provided with a power transmission mechanism (12) for transmitting or releasing rotational power, wherein the power transmission mechanism (12) is bent. On the side of the transmission part (15), the work piece (2) is fitted into the input shaft (11), and the centering protrusion (1)
The engaging member (20) provided with a plurality of engaging protrusions (18) on the outer peripheral portion of (7) and one end of the bending transmission portion (15) are fitted and are rotatable with respect to the auto hitch hanger (6). It is elastically supported through the rubber bush (25) and also has a centering hole (21).
To a tractor characterized in that an engaged member (25) having a plurality of engaging grooves (22) for engaging with the engaging protrusions (18) is provided on an outer peripheral portion of the member so as to face each other. Work machine mounting device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62131011A JPH0779567B2 (en) | 1987-05-26 | 1987-05-26 | Equipment for attaching work equipment to tractors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62131011A JPH0779567B2 (en) | 1987-05-26 | 1987-05-26 | Equipment for attaching work equipment to tractors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63294705A JPS63294705A (en) | 1988-12-01 |
| JPH0779567B2 true JPH0779567B2 (en) | 1995-08-30 |
Family
ID=15047891
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62131011A Expired - Lifetime JPH0779567B2 (en) | 1987-05-26 | 1987-05-26 | Equipment for attaching work equipment to tractors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0779567B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0642411Y2 (en) * | 1987-09-04 | 1994-11-09 | 井関農機株式会社 | Work equipment coupling device |
| JPH062486Y2 (en) * | 1987-10-29 | 1994-01-26 | 三菱農機株式会社 | Hitch device in tractor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58220608A (en) * | 1982-06-14 | 1983-12-22 | 高北農機株式会社 | Connecting apparatus of rotary power transmission mechanism between tractor and working machine |
| JPS60251804A (en) * | 1984-05-28 | 1985-12-12 | 東洋農機株式会社 | Power coupler of direct mount type working machine |
-
1987
- 1987-05-26 JP JP62131011A patent/JPH0779567B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63294705A (en) | 1988-12-01 |
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