JPH0789771B2 - Equipment for attaching work equipment to tractors - Google Patents
Equipment for attaching work equipment to tractorsInfo
- Publication number
- JPH0789771B2 JPH0789771B2 JP62137854A JP13785487A JPH0789771B2 JP H0789771 B2 JPH0789771 B2 JP H0789771B2 JP 62137854 A JP62137854 A JP 62137854A JP 13785487 A JP13785487 A JP 13785487A JP H0789771 B2 JPH0789771 B2 JP H0789771B2
- Authority
- JP
- Japan
- Prior art keywords
- tractor
- working machine
- power transmission
- work machine
- engaging
- 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
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自動
的に伝達、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 enables a farm work machine to be attached and detached to and from a farm tractor via a three-point link hitch mechanism having an automatic connection function, and automatically transmits or releases rotation power from the farm tractor to the farm work machine. The present invention relates to a work machine mounting device for a tractor.
従来、トラクタの後部に、自動連結機能を有する３点リ
ンクヒッチ機能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
成であつた。Conventionally, a working machine can be attached to and detached from a rear part of a tractor through a three-point link hitch function having an automatic connecting function, and a bending transmission section that can be bent from the tractor to the working machine on the tractor side and the working machine side is provided. There is provided a power transmission mechanism for transmitting rotational power by means of which the power transmission mechanism is automatically brought into a power transmission state or a power transmission release state when the working machine is connected or disconnected, as disclosed in, for example, JP-A-62-62. -65602 publication. The power transmission mechanism of this prior art has a configuration 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、作業機に適合した専用の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, a dedicated one suitable for each tractor and the working machine must be prepared in advance, which is not versatile.
本発明は上記の事情にかん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12を設
け、この動力伝達機構12を、作業機２装着時に自動的に
係合し、作業機２の連結解除時には自動的に離脱するよ
うに構成し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、係合孔17aおよびガイド孔17bを有
する被係合部17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に固定した支持板21に対しばね
部材22を介して前後方向および上下方向に所定範囲で移
動可能に支持された可動板20に対して、回転自在に支持
されると共に、係合突起18aおよびガイド突起18bを有す
る係合部18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 the working machine 2 can be attached to and detached from the tractor 1 via the link mechanism 3 in which the automatic hitch hanger 6 having an automatic connecting function is connected to the tractor 1. On the other hand, a power transmission mechanism 12 that has bending transmission portions 13 and 15 that can be bent on the tractor 1 side and the working machine 2 side to transmit or release rotational power is provided. In a working machine mounting device configured to be automatically engaged when mounted and automatically disengaged when the working machine 2 is disconnected, the power transmission mechanism 12 has a bending power transmission section 15 side and an input of the working machine 2 is input. The engaged member 17 fitted into the shaft 11 and having the engaging hole 17a and the guide hole 17b, and the supporting plate 21 fitted into one end of the bending transmission unit 15 and fixed to the auto hitch hanger 6 are spring members. Predetermined in the front-back and up-down directions via 22 The movable plate 20 movably supported by the surroundings is rotatably supported, and the engaging portion 18 having the engaging protrusions 18a and the guide protrusions 18b is arranged to face each other. It is what
上記の構成を有することによつて本発明の作業機装着装
置は、作業機の着脱時に特に芯出し精度を要求されるこ
となく、動力接断操作を自動的に行うことができる。With the above-described configuration, the working machine mounting apparatus of the present invention can automatically perform the power connection / disconnection operation without particularly requiring centering accuracy when the working machine is attached / detached.
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によつ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。この動力伝達機構12
は、トラクタ側の屈曲伝動部13と、摺動軸14aを有する
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、トラクタ側および作業機側の屈
曲伝動部13,15はそれぞれシングルジョイントからなる
ものである。シングルジョイント15と入力軸11との間に
位置して動力接断機構16が設けられている。 動力接断機構16は、ロータリ農作業機２の入力軸11に嵌
着され、係合孔17aおよびガイド孔17bを有する被係合部
17と、先端側が細くなるテーパ面を有するガイド突起18
bおよびガイド突起18bに連なる係合突起18aを有する係
合部18とにより構成されている。そして係合部18は、シ
ングルジョイント15に一体的に連結され、ベアリング19
によつて回転自在に支持されており、ベアリング19を取
付けた可動板20は、オートヒッチハンガ６に固定された
支持板21に対しばね部材22により前後方向および上下方
向に所定範囲で移動可能に弾性支持されている。 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
は、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
部6b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の係合部18は、ロータリ農作業機
２の入力軸11に固着された被係合部17に対し、ガイド突
起18bが係合孔17aに挿入されつつ可動板20が移動して芯
出しされ、ガイド突起18bがガイド孔17b内に入り、同時
に係合孔17aに係合突起18aが係合して係合部18と被係合
部17とが連結されて動力伝達状態となる。 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、ロータリ農作業機２を接地した状態でロアリン
ク連結部6cとロアリンク連結ピン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
ると、これと同時に動力接断機構16の係合部18と被係合
部17との係合は解除されて動力遮断状態となる。 なお、上記動力接断機構16は、第２図に示すように、被
係合部17の係合孔17aおよびガイド孔17bに代えて広角ガ
イド孔17cおよびスフェリカルスプライン溝17dとし、係
合部18の係合突起18aおよびガイド突起18bに代えてスフ
ェリカルスプライン軸18cとしてもよい。この場合に
は、動力接断機構16の接合時にスフェリカルスプライン
軸18cを係合方向に回転させることで被係合部17との係
合が容易となり、接合を解除するときはスフェリカルス
プライン軸18cを逆回転させると容易に解除される。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 so that rotational power is transmitted. This power transmission mechanism 12
Is composed of a bending transmission portion 13 on the tractor side, a slide transmission shaft 14 having a sliding shaft 14a, and a bending transmission portion 15 on the working machine side. The bending transmission parts 13 and 15 on the tractor side and the working machine side are each made of a single joint. A power disconnecting mechanism 16 is provided between the single joint 15 and the input shaft 11. The power connection / disconnection mechanism 16 is fitted to the input shaft 11 of the rotary agricultural work machine 2 and has an engaged portion having an engagement hole 17a and a guide hole 17b.
17 and a guide protrusion 18 having a tapered surface that becomes thinner on the tip side.
b and an engaging portion 18 having an engaging protrusion 18a connected to the guide protrusion 18b. The engaging portion 18 is integrally connected to the single joint 15, and the bearing 19
The movable plate 20, which is rotatably supported by the bearing 19, is attached to the support plate 21 fixed to the auto hitch hanger 6 by the spring member 22 so as to be movable in the front-back direction and the vertical direction within a predetermined range. Elastically supported. In the work implement mounting device for a tractor having such a configuration, when the rotary farm work device 2 is connected to the agricultural tractor 1, the lower link 5 of the three-point link mechanism 3 is operated to cause the hook portion 6a of the automatic hitch hanger 6 to operate. When engaging the top mast 7 of the rotary 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 portion 6b of the automatic hitch hanger 6 and the rotary farm work. The lower link connecting pin 8 of the machine 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 engagement portion 18 of the power disconnection mechanism 16 is guided to the engaged portion 17 fixed to the input shaft 11 of the rotary farm work machine 2 by the guide projection 18b. While the movable plate 20 is moved and centered while being inserted into the engaging hole 17a, the guide protrusion 18b enters the guide hole 17b, and at the same time, the engaging protrusion 18a engages with the engaging hole 17a and the engaging portion 18b. The engaged portion 17 and the engaged portion 17 are connected to each other to be in a power transmission state. 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 disconnection mechanism 16.
The working unit of the rotary farm work machine 2 is driven. When releasing the connection between the agricultural tractor 1 and the rotary agricultural work machine 2, the drive of the rotary agricultural work machine 2 and the traveling of the agricultural tractor 1 are stopped, and the lower link connecting portion 6c and the lower link connection are made with the rotary agricultural work machine 2 being grounded. When the connection between the agricultural tractor 1 and the rotary farm work machine 2 is released by releasing the connection between the pin 8 and the hook 6a and the top mast 7, the power disconnecting mechanism 16 is simultaneously engaged. The engagement between the portion 18 and the engaged portion 17 is released and the power is cut off. As shown in FIG. 2, the power disconnection mechanism 16 has a wide-angle guide hole 17c and a spherical spline groove 17d instead of the engagement hole 17a and the guide hole 17b of the engaged portion 17, and the engagement portion 18 A spherical spline shaft 18c may be used instead of the engaging protrusion 18a and the guide protrusion 18b. In this case, it becomes easier to engage with the engaged portion 17 by rotating the spherical spline shaft 18c in the engaging direction during the joining of the power disconnection mechanism 16, and when the joining is released, the spherical spline shaft 18c is rotated. It can be easily released by rotating it in the reverse direction. 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は、屈曲伝動部15側で、作業
機２の入力軸11に嵌挿され、係合孔17aおよびガイド孔1
7bを有する被係合部17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に固定した支持板21に対
しばね部材22を介して前後方向および上下方向に所定範
囲で移動可能に支持された可動板20に対して、回転自在
に支持されると共に、係合突起18aおよびガイド突起18b
を有する係合部18とを、相対向して配設したので、トラ
クタ１に作業機２を装着したとき、被係合部17の係合孔
17aおよびガイド孔17bに対して、係合部18が可動板20に
より移動しつつその係合突起18aおよびガイド突起18bを
芯出しながら動力伝達状態に確実に係合され、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
の連結解除と同時に被係合部17から係合部18が離脱して
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、正確に行うことができる。As described above, according to the work implement mounting apparatus for the tractor of the present invention, the power transmission mechanism 12 for transmitting the rotational power from the tractor 1 side to the work implement 2 side is provided at the bending transmission portion 15 side and the work implement 2 side. Of the engaging hole 17a and the guide hole 1
The engaged portion 17 having 7b and one end of the bending transmission portion 15 are inserted into one end of the bending transmission portion 15 and moved in a predetermined range in the front-rear direction and the up-down direction via the spring member 22 with respect to the support plate 21 fixed to the auto hitch hanger 6. The movable plate 20 is rotatably supported, and is rotatably supported, and the engaging protrusion 18a and the guide protrusion 18b.
Since the engaging portion 18 having the above is disposed so as to face each other, the engaging hole of the engaged portion 17 when the working machine 2 is mounted on the tractor 1
The engaging portion 18 is moved by the movable plate 20 with respect to the guide hole 17b and the guide hole 17b, and the engaging protrusion 18a and the guide protrusion 18b are centered and reliably engaged in the power transmission state, and strict centering is required. Since it does not, it is versatile. Also, the working machine 2
At the same time as the connection is released, the engaging portion 18 is disengaged from the engaged portion 17 and the power transmission is interrupted, so that the power transmission can be connected and disconnected easily, quickly and accurately.
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図は本発明の他の実施例を示す概略側面図で
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……ロアリンク連結ピン、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、14a……摺動軸、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……被係合部、17a……係合孔、17b……ガイド
孔、17c……広角ガイド孔、17d……スフェリカルスプラ
イン溝、18……係合部、18a……係合突起、18b……ガイ
ド突起、18c……スフェリカルスプライン軸、19……ベ
アリング、20……可動板、21……支持板、22……ばね部
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 a schematic side view showing another embodiment of the present invention. 1 ... Agricultural tractor, 2 ... Rotary agricultural work machine, 3 ...
3-point link mechanism, 4 ... top link, 5 ... lower link, 6 ... auto hitch hanger, 7 ... top mast,
8 ... Lower link connecting pin, 9 ... PTO shaft, 10 ... Mission case, 11 ... Input shaft, 12 ... Power transmission mechanism, 13
...... Tractor side bending transmission (single joint), 14
...... Slide transmission shaft, 14a …… Sliding shaft, 15 …… Working machine side bending transmission part (single joint) 16 …… Power disconnect mechanism, 17 …… Engagement part, 17a …… Engagement hole, 17b ...... Guide hole, 17c …… Wide angle guide hole, 17d …… Spherical spline groove, 18 …… Engagement part, 18a …… Engagement projection, 18b …… Guide projection, 18c …… Spherical spline shaft, 19 …… Bearing , 20 ...... movable plate, 21 ...... support plate, 22 ...... spring 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）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（1
2）を設け、この動力伝達機構（12）を、作業機（２）
装着時に自動的に係合し、作業機（２）の連結解除時に
は自動的に離脱するように構成し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、係合孔（17a）
およびガイド孔（17b）を有する被係合部（17）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）に固定した支持板（21）に対しばね部材（2
2）を介して前後方向および上下方向に所定範囲で移動
可能に支持された可動板（20）に対して、回転自在に支
持されると共に、係合突起（18a）およびガイド突起（1
8b）を有する係合部（18）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 has a bending transmission section (13, 15) that can be bent to transmit or release rotational power (a power transmission mechanism ( 1
2) is provided, and this power transmission mechanism (12) is connected to the working machine (2).
A working machine mounting device configured to automatically engage when mounted and to automatically disengage when the working machine (2) is disconnected, wherein the power transmission mechanism (12) is provided on the bending transmission section (15) side. , Is fitted into the input shaft (11) of the working machine (2), and the engaging hole (17a)
And an engaged portion (17) having a guide hole (17b) and a support member (21) fitted and inserted into one end of the bending transmission portion (15) and fixed to the auto hitch hanger (6) with respect to a spring member ( 2
2) is rotatably supported by a movable plate (20) which is movably supported in the front-rear direction and the up-down direction within a predetermined range, and also has an engaging projection (18a) and a guide projection (1).
A device for mounting a working machine on a tractor, characterized in that an engaging portion (18) having 8b) is disposed so as to face each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62137854A JPH0789771B2 (en) | 1987-05-30 | 1987-05-30 | Equipment for attaching work equipment to tractors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62137854A JPH0789771B2 (en) | 1987-05-30 | 1987-05-30 | Equipment for attaching work equipment to tractors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63301708A JPS63301708A (en) | 1988-12-08 |
| JPH0789771B2 true JPH0789771B2 (en) | 1995-10-04 |
Family
ID=15208335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62137854A Expired - Fee Related JPH0789771B2 (en) | 1987-05-30 | 1987-05-30 | Equipment for attaching work equipment to tractors |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0789771B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4704675A (en) * | 1986-12-22 | 1987-11-03 | At&T Teletype Corporation | Method for velocity adjustment of ink jet nozzles in a nozzle array |
| JPH0618484B2 (en) * | 1987-09-03 | 1994-03-16 | 株式会社クボタ | Coupling device for tractor and work equipment |
| JPH025805A (en) * | 1988-06-27 | 1990-01-10 | Kubota Ltd | Connection device between tractor and work equipment |
| JPH0751848Y2 (en) * | 1988-07-16 | 1995-11-29 | 株式会社ササキコーポレーション | Coupling device to be attached to the tractor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6185101A (en) * | 1984-10-03 | 1986-04-30 | 松山株式会社 | Hitch apparatus of agricultural working machine |
-
1987
- 1987-05-30 JP JP62137854A patent/JPH0789771B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63301708A (en) | 1988-12-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |