JPH01108902A - Three-point link mechanism of tractor - Google Patents

Three-point link mechanism of tractor

Info

Publication number
JPH01108902A
JPH01108902A JP26693787A JP26693787A JPH01108902A JP H01108902 A JPH01108902 A JP H01108902A JP 26693787 A JP26693787 A JP 26693787A JP 26693787 A JP26693787 A JP 26693787A JP H01108902 A JPH01108902 A JP H01108902A
Authority
JP
Japan
Prior art keywords
tractor
lower link
link mechanism
point
linkage mechanism
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.)
Pending
Application number
JP26693787A
Other languages
Japanese (ja)
Inventor
Tadashi Nakamura
正 中村
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP26693787A priority Critical patent/JPH01108902A/en
Publication of JPH01108902A publication Critical patent/JPH01108902A/en
Pending legal-status Critical Current

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  • Agricultural Machines (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明はトラクタの後部に装備されている３点リンク機
構の構造に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the structure of a three-point linkage mechanism installed at the rear of a tractor.

（従来の技術） 農用のトラクタの後部にはロータリ耕耘装置やプラウ等
の各種の作業装置を連結する３点リンク機構が装備され
ているが、例えばロータリ耕耘装置を機体に対して前後
方向に傾けることによって後方に耕起放出した土を側方
に寄せて畝立て作業を行う場合は、３点リンク機構にお
けるロアリンクをトラクタ後部との連結部りに左右に振
ることにより、ロータリ耕耘装置を傾けるようにしてい
た。(Prior Art) The rear of an agricultural tractor is equipped with a three-point linkage mechanism that connects various working devices such as a rotary tiller and a plow. When performing ridge-raising work by moving the soil released by plowing backwards to the side, tilt the rotary tillage device by swinging the lower link in the three-point linkage mechanism left and right at the connection with the rear of the tractor. That's what I was doing.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

以上のように３点リンク機構におけるロアリンクを左右
に振るだけではロータリ耕耘装置の機体に対する傾きが
小さ（、ロータリ耕耘装置に゛よる畝立て作業が十分に
行えない場合があると共に、ロアリンクを左右に大きく
振るにも限界があった。　ここで本発明は前述の問題に
着目してロータリ耕耘装置を機体に対して前後方向に十
分に傾けて連結できるような構造を得ることを目的とし
ている。As mentioned above, simply swinging the lower link in the three-point linkage mechanism from side to side will reduce the tilt of the rotary tiller with respect to the machine body. There was also a limit to the ability to swing the rotary tiller to the left or right.The present invention focuses on the above-mentioned problem and aims to provide a structure that allows the rotary tiller to be connected to the machine while being sufficiently tilted in the front and rear directions. .

（問題点を解決するための手段〕 本発明の特徴は以上述べたようなトラクタの３点リンク
機構において、ロアリンクの機体後部への連結点を機体
前後方向に位置変更自在に、ロアリンクと機体後部との
連結部を形成してあることにあり、その作用及び効果は
次の通りである。(Means for Solving the Problems) A feature of the present invention is that in the three-point link mechanism of a tractor as described above, the connecting point of the lower link to the rear of the body can be freely changed in the longitudinal direction of the body. The reason is that it forms a connection part with the rear part of the fuselage, and its functions and effects are as follows.

〔作　用〕[For production]

ロアリンクを左右に振ったとしてもロアリンクの作業装
置側端部は少ししか前後方向に変位しないのに対して、
上記構成によれば、ロアリンクの機体後部への連結点を
前後に動かした距離だけ、ロアリンクの作業装置側端部
が機体前後方向に変位することになるのである。Even if the lower link is swung from side to side, the end of the lower link on the side of the work equipment will only be displaced slightly in the front and back direction.
According to the above configuration, the working device side end of the lower link is displaced in the longitudinal direction of the fuselage by the distance that the connection point of the lower link to the rear of the fuselage is moved back and forth.

〔発明の効果〕〔Effect of the invention〕

従来構造のようなロアリンクを左右に振る構造に比べて
、ロアリンクの作業装置側端部を機体前後方向に大きく
変位させることができ、これによってロータリ耕耘装置
を機体前後方向に十分に傾けることができるようになっ
て、後方側方へ土を十分に放出しての畝立て作業を良好
に行えるようになった。Compared to the conventional structure in which the lower link swings left and right, the end of the lower link on the working device side can be largely displaced in the longitudinal direction of the machine, which allows the rotary tiller to be tilted sufficiently in the longitudinal direction of the machine. This enabled us to release enough soil to the rear and sides to perform the ridge-building work successfully.

〔実施例〕〔Example〕

以下、本発明の実施例であるトラクタの３点リンク機構
について図面に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS A three-point linkage mechanism for a tractor, which is an embodiment of the present invention, will be described below with reference to the drawings.

第１図及び第２図に示すように、トラクタのミッション
ケース（１）の後部左右にブラケット（２）が連結固定
されており、このブラケット（２）の横軸芯（Ｐｌ）周
りに揺動自在に支持アーム（３）が軸支されている。そ
して、この支持アーム（３）の揺動端にロアリンク（４
）がピン連結されると共に、ＰＴＯ軸（６）よりも上方
にトップリンク（５）が配置されて３点リンク機構が構
成されている。As shown in Figures 1 and 2, brackets (2) are connected and fixed to the rear left and right sides of the transmission case (1) of the tractor, and the brackets (2) swing around the horizontal axis (Pl). A support arm (3) is freely supported. A lower link (4) is attached to the swing end of this support arm (3).
) are connected by pins, and a top link (5) is arranged above the PTO shaft (6) to form a three-point link mechanism.

前記ブラケット（２）には複数個のボルト穴（２ａ）が
開孔されており、第２図は左側の支持アーム（３）を機
体後方に倒した状態でブラケット（２）にボルト固定し
、右側の支持アーム（３）を機体前方に倒した状態でブ
ラケット（２）にボルト固定した状態を示しており、ロ
ータリ耕耘装置（７）がその右側部を前方に前進させた
状態でトップリンク（５）及びロアリンク（４）に連結
されている。A plurality of bolt holes (2a) are drilled in the bracket (2), and in Figure 2, the left support arm (3) is bolted to the bracket (2) with it tilted towards the rear of the aircraft. The figure shows the right side support arm (3) tilted forward to the front of the machine and bolted to the bracket (2), and the rotary tiller (7) shown with its right side moved forward and attached to the top link ( 5) and the lower link (4).

そして、油圧式の昇降シリンダ（８）により揺動操作さ
れるリフトアーム（９）からロアリンク（４）に亘すロ
ソド（１０）が架設されており、昇降シリンダ（８）に
よりロータリ耕耘装置（７）が昇降操作されるのである
。又、支持アーム（３）の揺動端からロアリンク（４）
に亘って、ロアリンク（４）の姿勢を安定させるロッド
（１１）が架設されている。A rotor (10) is installed extending from the lift arm (9) to the lower link (4), which is swing-operated by a hydraulic lifting cylinder (8), and the rotary tiller (10) is operated by the lifting cylinder (8). 7) is operated up and down. Also, from the swinging end of the support arm (3) to the lower link (4)
A rod (11) for stabilizing the posture of the lower link (4) is installed across the lower link (4).

尚、特許請求の範囲の項に図面との対照を便利にする為
に符号を記すが、該記入により本発明は添付図面の構造
に限定されるものではない。Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

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

図面は本発明に係るトラクタの３点リンク機構の実施例
を示し、第１図は３点リンク機構の側面図、第２図は３
点リンク機構の平面図である。 （４）・・・・・・ロアリンク。The drawings show an embodiment of a three-point linkage mechanism for a tractor according to the present invention, FIG. 1 is a side view of the three-point linkage mechanism, and FIG. 2 is a side view of the three-point linkage mechanism.
It is a top view of a point linkage mechanism. (4)...Lower link.

Claims (1)

【特許請求の範囲】[Claims] ロアリンク（４）の機体後部への連結点を機体前後方向
に位置変更自在に、ロアリンク（４）と機体後部との連
結部を形成してあるトラクタの３点リンク機構。A three-point link mechanism for a tractor in which a connection point between the lower link (4) and the rear body of the machine is formed so that the connection point of the lower link (4) to the rear body of the machine can be changed in the longitudinal direction of the body.
JP26693787A 1987-10-21 1987-10-21 Three-point link mechanism of tractor Pending JPH01108902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP26693787A JPH01108902A (en) 1987-10-21 1987-10-21 Three-point link mechanism of tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP26693787A JPH01108902A (en) 1987-10-21 1987-10-21 Three-point link mechanism of tractor

Publications (1)

Publication Number Publication Date
JPH01108902A true JPH01108902A (en) 1989-04-26

Family

ID=17437758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP26693787A Pending JPH01108902A (en) 1987-10-21 1987-10-21 Three-point link mechanism of tractor

Country Status (1)

Country Link
JP (1) JPH01108902A (en)

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