JP2004298165A - Foldable agricultural implement - Google Patents

Foldable agricultural implement Download PDF

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Publication number
JP2004298165A
JP2004298165A JP2003127564A JP2003127564A JP2004298165A JP 2004298165 A JP2004298165 A JP 2004298165A JP 2003127564 A JP2003127564 A JP 2003127564A JP 2003127564 A JP2003127564 A JP 2003127564A JP 2004298165 A JP2004298165 A JP 2004298165A
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JP
Japan
Prior art keywords
rotary
working
extension
shaft
extended
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
JP2003127564A
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Japanese (ja)
Inventor
Ryoji Kuji
良治 久慈
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.)
Sasaki Corp
Original Assignee
Sasaki Corp
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Filing date
Publication date
Application filed by Sasaki Corp filed Critical Sasaki Corp
Priority to JP2003127564A priority Critical patent/JP2004298165A/en
Publication of JP2004298165A publication Critical patent/JP2004298165A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable agricultural implement having a driving transmission constitution, smoothly connecting a transmission body for transmitting the driving without being damaged and capable of absorbing the wave and eccentricity of a driving shaft and a driven shaft on transmitting the driving. <P>SOLUTION: This foldable agricultural implement constituted as foldable by dividing the implement into 2 or 3 parts, and elongating its working width in left and right by extending them, is provided by installing a connecting body at the driving shaft so that the implement is driven in the state of elongating the working width, intervening an elastic material at the mounting part of the connecting body to perform the connection of the connecting body smoothly by causing the flexibility on the connecting body by the elasticity of an elastic material and also performing the smooth rotary driving transmission by absorbing the eccentricity with the elastic body even in the case of without arranging the axial centers of a soil-crushing rotary shaft and a soil-crushing elongation rotary shaft on a same axis. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、折り畳み農作業機の駆動伝達構成に関する。
【0002】
【従来の技術】
従来技術として、作業機本体と、この作業機本体に回転駆動可能に設けられた砕土ロータリーと、前記作業機本体の端部に折り畳み可能に設けられた延長作業機体と、この延長作業機体に回転可能に設けられ前記砕土ロータリーの作業幅を延長する延長砕土ロータリーとを具備し、前記砕土ロータリーの作業幅を延長した状態でこの砕土ロータリーの回転により前記延長砕土ロータリーを回転させる折り畳み農作業機において、前記砕土ロータリーは、ロータリー軸と、このロータリー軸の周面に突出された砕土爪と、前記ロータリー軸の端部に設けられこの砕土ロータリーの回転方向側に係合面を形成した係合体とを有し、前記延長砕土ロータリーは、延長ロータリー軸と、この延長ロータリー軸の周面に突出された砕土爪と、前記延長ロータリー軸の端部に設けられ前記砕土ロータリーの回転により前記係合体の係合面が係合する被係合面を形成した被係合体とを有し、前記係合体の係合面と前記被係合体の被係合面との少なくとも一方は、緩衝材を有することを特徴とする折り畳み農作業機が公知である。(特許文献1)
【0003】
【特許文献1】
特許第3268289号明細書
【0004】
【発明が解決しようとする課題】
しかしながら、上記従来技術の構成では、折り畳み回数が増えるとともに係合体及び被係合体の接触回数も増すため、係合体と被係合体の接触部に設けた緩衝材である弾性体はこの繰り返し動作で摩耗し、係合体の係合面と被係合体の被係合面が係合するときの衝撃を緩衝できず、特に駆動軸となるロータリ軸から被駆動軸となる延長ロータリ軸へ駆動伝達するときの係合体の係合面と被係合体の被係合面が係合する時の衝撃により損傷するという問題がある。
【0005】
又、駆動軸となるロータリ軸と被駆動軸となる延長ロータリ軸の軸芯に角度を有し作業巾を延長した状態に配置された場合、ロータリ軸からの駆動は係合体と被係合体により延長ロータリ軸へ駆動伝達されるものの延長ロータリ軸がうねり、偏心して回転するため係合面及び被係合面に設けた緩衝材がこすれて片減りするという問題がある。
【0006】
そこで本発明は、駆動伝達するための連結体が損傷することなくスムーズに連結され、駆動伝達時の駆動軸及び被駆動軸のうねりや偏心を吸収することができる駆動連結構成を有した折り畳み農作業機を提供することを目的とする。
【0007】
【課題を解決するための手段】
課題を解決するために、作業体を2乃至3分割し折り畳み可能に構成し、展開して左右に作業巾を延長する折り畳み農作業機において、前記作業体は作業巾を延長した状態で駆動されるよう駆動軸に連結体を設け、この連結体の取付部に弾性体を介在させたことにより弾性体は耐摩耗性に優れ、弾性体の弾性作用により連結体の連結がスムーズに行なえる。
【0008】
又、トラクタに装着可能とし、回転駆動される砕土ロータリを備えた中央作業体と、この中央作業体に対し折り畳み可能とし、左右に作業巾を延長するため延長砕土ロータリを回転可能に備えた延長作業体とから構成され、前記延長作業体の延長砕土ロータリと前記中央作業体の砕土ロータリとの軸間を連結する連結体を設けた折り畳み農作業機において、前記連結体は一対のクラッチを有し構成され、この一対のクラッチの少なくとも一方はロータリとの取付部に弾性体を介在させたことにより、弾性体の弾性作用により連結体に柔軟性が生れ連結体の連結がスムーズに行なえるとともに、砕土ロータリと砕土延長ロータリ軸の軸芯が同軸上に配置されず、角度を有し偏心する場合でも弾性体が偏心を吸収してスムーズに回転駆動伝達される。
【0009】
又、連結体を構成する一対の係合体は同一形状とすることにより、係合面が係合するとき駆動伝達時の衝撃がなく損傷することがなくなる。
【0010】
【発明の実施の形態】
以下、本発明の実施の形態を図面を用いて説明する。図1は本発明を実施した折り畳み農作業機の平面図、図2は後面図、図3は側面図、図4は駆動伝達図、図5は連結体の拡大断面図、図6は連結体の弾性体の作用図である。
【0011】
図1,図2及び図3において、Aは折り畳み農作業機で、1の中央作業体と左右に作業巾を延長する延長作業体2,2の3分割で構成されている。中央作業体1は左右に延設するセンタフレーム11と、このセンタフレーム11の中央部前方に挟持するよう設けたミッションケース12と、このミッションケース12の前方にさらに突出するトラクタ装着マスト13が設けられ、前記ミッションケース12の前方には入力軸12aが突設し、図示されていないがトラクタのPTO軸より駆動伝達するようユニバーサルジョイントが連結され、前記トラクタ装着マスト13は図示されていないがトラクタ3点リンク機構に装着される。
【0012】
又、前記ミッションケース12の下部には左右水平方向に延設し回転駆動可能に設けらた駆動軸である砕土ロータリ14,14と、この砕土ロータリ14,14の上方を覆うセンタカバー15が前記センタフレーム11の下部で両端部に設けられた側板11L,11Rに固定され、このセンタカバー15の後方には両端を軸支し上下回動自在とした第1センタレベラ16と、この第1センタレベラ16の後方に両端を軸支し、上下回動自在とした第2センタレベラ17が設けられ、センタレベラが構成されている。
【0013】
延長作業体2,2はフレームとカバーとが一体構造となった延長カバーフレーム21,21と、この延長カバーフレーム21,21の下方に両端を回転自在に軸支した被駆動軸である延長砕土ロータリ22,22と、前記延長カバーフレーム21,21の後方には、両端を軸支し上下回動自在とした第1延長レベラ23,23と、この第1延長レベラ23,23の後方には両端を軸支し、上下回動自在とした第2延長レベラ24,24が設けられ延長レベラが構成される。
【0014】
前記中央作業体1と前記延長作業体2,2の連結部は前記センタフレーム11の両端部に設けた回動孔を有する回動ブラケット18,18と前記延長カバーフレーム21,21にコの字状に形成し回動孔を有した延長回動ブラケット25,25とを重合し回動孔を一致させて回動軸2a,2aを挿入し、前記延長作業体2,2を延長作業時の展開状態と非作業時である移動格納時の折り畳み状態に回動可能に軸支し連結してある。
【0015】
3はレベラ操作手段で、前記第2センタレベラ17及び前記第2延長レベラ24,24を、泥土を掻き寄せる土寄せ作業位置と泥土を均平に整地する代かき作業位置に切換え操作するもので、操作レバー31を前後回動操作することにより、前記第2センタレベラ17及び前記第2延長レベラ24,24を固定保持し、泥土を掻き寄せる土寄せ作業位置と、固定解除し泥土を均平に整地する代かき作業位置に切換え可能とする。
【0016】
4,4は延長作業ロック装置で、前記中央作業体1と前記延長作業体2,2の前方側連結部に配置され、前記延長作業体2,2を延長作業時の展開状態に固定する装置であり、前記センタフレーム11の前方両端部にU字状の切欠き部を有する係合プレート41、41と、この係合プレート41,41の下部にはロック方向へ常に弾性保持した係合フック42,42が水平方向に回動可能に設け、前記延長カバーフレーム21,21の内側前方部に、前記係合プレート41,41に設けたU字状の切欠き部に係合し、前記係合フック42,42により係着する係合ピンを有する係合ブラケット43を設け、前記延長作業体2,2を延長作業時の展開状態に固定可能とし、ロック解除は前記係合フック42に設けたレバー42aを解除方向へ回動させることによりロック解除することができる。
【0017】
5は折り畳みロック装置で、前記中央作業体1の後方両端部に配置され前記延長作業体2,2を非作業時である移動格納時の折り畳み状態に固定する装置であり、前記回動ブラケット11a,11aに水平方向に回動自在として軸支され、フック状の切欠き部を有しロック方向へ弾性保持される折り畳み係合フック51,51と、前記延長回動ブラケット25,25には折り畳み係合ピン52が設けてあり、前記延長作業体2,2を折り畳み回動していくと、前記折り畳み係合ピン52が前記折り畳み係合フック51,51と係合し、前記延長作業体2,2を移動格納時の折り畳み状態に固定する。ロック解除は、前記折り畳み係合フック51,51に設けたレバー51a,51aを解除方向へ回動させることによりロック解除することができる。
【0018】
6,6は連結体で、前記砕土ロータリ14,14の外方端と前記延長砕土ロータリ22,22の内方端に配置され、前記延長砕土ロータリ22,22へ駆動伝達するものである。
【0019】
7はレベラ連結装置で、前記第2センタレベラ17と前記第2延長レベラ24,24を延長作業時に連結するものであり、前記第2延長レベラ24,24の内端部に上下方向へ回動可能に軸支されたロックプレート71,71が前記第2センタレベラ17の端部と当接すると下方へ回動するよう構成され、下方に回動した前記ロックプレート71,71は、前記第2センタレベラ17の端部を上方から挟持し固定保持され前記第2センタレベラ17と前記第2延長レベラ24,24は連結される。
【0020】
8はレベラ固定装置で、前記延長作業体2L,2Rの略内端部に設けられ、前記延長作業体2,2を非作業時である移動格納時の折り畳み状態にした場合の前記第1延長レベラ23,23及び前記第2延長レベラ24,24がバタつかないよう固定するものであり、延長カバーフレーム21,21から第2延長レベラ24,24を連結したりリンク体81と、このリンク体81に係合する係合フック82により構成され、非作業時である移動格納時の折り畳み状態で係合フック82がリンク体81に係合することで、前記第1延長レベラ23,23及び前記第2延長レベラ24,24がバタつかないよう固定する。
【0021】
Gはガススプリングで高圧ガス封入したガス室と圧縮するピストンロットにより構成され、ピストンロットに伸び方向の反発力をもたせたもので、この反発力を利用し前記延長作業体2,2の折り畳み回動動作を補助するものである。
【0022】
図4において、駆動伝達について説明する。図示されていないがトラクタPTO軸にユニバーサルジョイントを介し連結する入力軸12aに駆動伝達され、前記ミッションケース12内に設けたベベルギヤ12b,12cにより減速される。このベベルギヤ12cにより水平方向に駆動軸12dが設けられ、略中央部にスプロケット12eを設け、このスプロケット12eを下方に設けられるスプロケット12fへチェーン12gを架設し、さらに減速され前記ミッションケース12の下端部で左右に突設する出力軸12hへと駆動伝達される。この出力軸12hには、前記砕土ロータリ14,14が両端部に組み付けられ回転駆動する。
【0023】
前記砕土ロータリ14,14は、砕土ロータリ軸14a,14aの円周上で螺旋状に複数列設けた爪ホルダ14cに砕土爪14bを着脱自在に取り付け可能として構成され、外端部はベアリングリテーナ14d,14dにて支持され、回転駆動することにより泥土を砕土することができる。
【0024】
前記延長砕土ロータリ22,22は、延長砕土ロータリ軸22a,22aの円周上で螺旋状に複数列設けた爪ホルダ14cに砕土爪14bを有し着脱可能として構成され、この延長砕土ロータリ22,22は内方端を前記ベアリングリテーナ14dにて支持し、外方端は前記延長カバーフレーム21,21を構成する側板21a,21aの内方に設けたベアリングリテーナ22b,22bにより支持され回転可能としてある。そして、前記砕土ロータリ14,14の外端部と前記延長砕土ロータリ22,22の内端部には一対の連結体6,6が設けられ、砕土ロータリ14,14からの回転力を延長砕土ロータリ22,22へ駆動伝達可能に構成されている。
【0025】
図5は前記延長作業体2,2への駆動伝達連結部を示し、前記砕土ロータリ14,14の外端部と前記延長砕土ロータリ22,22の内端部にそれぞれ設けらる連結体6,6は同一構成としているため一方について説明する。
【0026】
連結体6は、前記中央作業体1の砕土ロータリ14の外方端部に設けた中央連結体6aと、前記延長作業体2の延長砕土ロータリ22の内方端部に設けた延長連結体6bから構成される。
【0027】
中央連結体6aは、前記砕土ロータリ14の砕土ロータリ軸14aのベアリングリテーナ14dより突出する軸端に形成されたスプラインに嵌合するクラッチロータ軸61を、このクラッチロータ軸61の端部に設けたクラッチ取付板61aに取付けられるクラッチ62と、このクラッチ62と前記クラッチ取付板61aとの間に介在させた弾性体63から構成される。
【0028】
延長連結体6bは、前記延長砕土ロータリ22の延長ロータリ軸22aのベアリングリテーナ14dより突出する軸端に形成されたスプラインに嵌合する延長クラッチロータ軸64と、この延長クラッチロータ軸64の端部に設けたクラッチ取付板64aに前記クラッチロータ軸61の端部に取付けたクラッチ62と同一形状のクラッチ62を取付け、前記同様このクラッチ62と延長クラッチロータ軸64のクラッチ取付板64aとの間に弾性体63を介在させ構成される。
【0029】
同一形状のクラッチ62,62は、水平方向に端面をもつ円盤形状の基盤に先端部を山型とし基盤中心より放射状の当接面を有した係合片62aを突設し、係合片62aを有する基盤の背面には取付ピン62bが突設する。
【0030】
クラッチ62,62のクラッチロータ軸61及び延長クラッチロータ軸64に対する取付部は同一構成であり、クラッチ取付板61a,64aに開口した取付孔にクラッチ62,62の取付ピン62bが弾性体63を介在させ挿入し、ロックナット65にて取付けられる。
【0031】
又、クラッチロータ軸61及び延長クラッチロータ軸64の外周部には砕土爪14bが着脱自在に設けられ、連結体6の残耕を砕土するものである。
【0032】
図6に基づいて連結体6の連結動作と弾性体63の作用について説明する。中央作業体1に対し、左右に作業巾を延長させる延長作業体2,2の内方端部に設けた延長連結体6bが中央作業体1の両端部に設けた中央連結体6aに進入してくる。そして、中央連結体6a及び延長連結体6bの対向する軸端部に設けられたクラッチ62,62が接触する。この時、クラッチ62,62の基盤対向面に突設した係合片62aは先端部の山型形状によりスムーズに噛み合う。
【0033】
又、クラッチ62の取付部に弾性体63を介在させることにより、中央連結体6aへの進入時に弾性体63が接触時に圧縮し、進入角度が緩和しスムーズに係合片62aが噛み合う。
【0034】
そして、延長作業体2が前記延長作業ロック装置4にて展開状態に固定保持されると、中央連結体6aのクラッチ62と延長連結体6bのクラッチ62とが完全に噛み合う。この時、クラッチ62,62の係合片62aは、基盤中心より放射状に当接面を有するため上下左右にずれることなく同軸上に係合され、前記砕土ロータリ14からの回転動力を延長砕土ロータリ22へ伝達することが可能となる。
【0035】
又、前記砕土ロータリ14と前記延長砕土ロータリ22の軸芯に少々の角度を有しても、クラッチ62,62の取付部に介在させた弾性体63がフレキシブルな動作をし、クラッチ62,62の噛み合いを保持したまま駆動伝達することが可能である。
【0036】
【発明の効果】
以上のように構成することにより、駆動伝達するクラッチの係合動作が弾性体の作用によりスムーズに行えるとともに、駆動軸である砕土ロータリ軸と被駆動軸である延長砕土ロータリ軸の軸芯に少々の角度を有しても連結体であるクラッチの取付部に介在させた弾性体がフレキシブルな動作をし、クラッチの噛み合いを保持したまま駆動伝達することができる。
【0037】
駆動伝達するクラッチを同一形状とすることで、駆動伝達時の係合片と係合片がぶつかる衝撃がなくクラッチを損傷することがなくなるとともに、部品の共通化が計れ部品管理が容易になる。
【図面の簡単な説明】
【図1】折り畳み農作業機の平面図
【図2】後面図
【図3】側面図
【図4】駆動伝達図
【図5】連結体の拡大断面図
【図6】連結体の弾性体の作用図
【符号の説明】
1 中央作業体
11 センタフレーム
11a 回動ブラケット
12 ミッションケース
12a 入力軸
12h 出力軸
13 トラクタ装着マスト
14 砕土ロータリ
14a 砕土ロータリ軸
14b 砕土爪
14d ベアリングリテーナ
15 センタカバー
16 第1センタレベラ
17 第2センタレベラ
18 回動ブラケット
2 延長作業体
2a 回動軸
21 延長カバーフレーム
22 延長砕土ロータリ
22a 延長砕土ロータリ軸
22b ベアリングリテーナ
23 第1延長レベラ
24 第2延長レベラ
25 延長回動ブラケット
3 レベラ操作手段
31 操作レバー
4 延長作業ロック装置
41 係合プレート
42 係合フック
43 係合ブラケット
5 折り畳みロック装置
51 折り畳み係合フック
52 折り畳み係合ピン
6 連結体
6a 中央連結体
6b 延長連結体
61 クラッチロータ軸
61a クラッチ取付板
62 クラッチ
62a 係合片
62b 取付ピン
63 弾性体
64 延長クラッチロータ軸
64a クラッチ取付板
7 レベラ連結装置
71 ロックプレート
8 レベラ固定装置
81 リンク体
82 係合フック
A 折り畳み農作業機
G ガススプリグ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a drive transmission configuration of a folding agricultural working machine.
[0002]
[Prior art]
As a conventional technique, a work machine main body, a crushing rotary provided rotatably on the work machine main body, an extension work body provided foldably at an end of the work machine main body, and a rotation A folding agricultural working machine that is provided so as to be capable of extending the working width of the clay crushing rotary and extending the working width of the clay crushing rotary, and that rotates the extended clay crushing rotary by rotating the clay crushing rotary with the working width of the clay crushing rotary extended. The clay crushing rotary includes a rotary shaft, a clay crushing claw protruding from a peripheral surface of the rotary shaft, and an engaging body provided at an end of the rotary shaft and having an engagement surface on a rotation direction side of the clay crushing rotary. The extended earth-crushing rotary has an extended rotary shaft, a earth-crushing claw protruding from a peripheral surface of the extended rotary shaft, An engaged body provided at an end of the tally shaft and having an engaged surface with which the engaging surface of the engaging body is engaged by rotation of the crushing rotary; 2. Description of the Related Art A folding agricultural working machine has been known, in which at least one of an engaging body and an engaged surface has a cushioning material. (Patent Document 1)
[0003]
[Patent Document 1]
Patent No. 3268289 [0004]
[Problems to be solved by the invention]
However, in the configuration of the related art, since the number of times of folding increases and the number of times of contact between the engaging body and the engaged body also increases, the elastic body, which is a cushioning material provided at the contact portion between the engaging body and the engaged body, repeats this operation. It is worn and cannot absorb the shock when the engagement surface of the engagement body and the engagement surface of the engaged body are engaged. In particular, power is transmitted from the rotary shaft serving as the drive shaft to the extended rotary shaft serving as the driven shaft. In this case, there is a problem that the engaging surface of the engaging body and the engaged surface of the engaged body are damaged by an impact at the time of engagement.
[0005]
When the working axis is arranged with an angle between the axis of the rotary shaft serving as the drive shaft and the axis of the extended rotary shaft serving as the driven shaft, the drive from the rotary shaft is performed by the engaging body and the engaged body. Although the drive is transmitted to the extended rotary shaft, the extended rotary shaft undulates and rotates eccentrically, so that there is a problem in that the cushioning material provided on the engagement surface and the engaged surface is rubbed and reduced.
[0006]
Therefore, the present invention relates to a folding farming operation having a drive connection structure capable of absorbing a swell or eccentricity of a drive shaft and a driven shaft at the time of drive transmission by smoothly connecting a connection body for driving transmission without damage. The purpose is to provide a machine.
[0007]
[Means for Solving the Problems]
In order to solve the problem, in a folding agricultural working machine in which a working body is divided into two or three so as to be foldable, and is deployed to extend a working width to the left and right, the working body is driven with the working width extended. The connecting member is provided on the drive shaft, and the elastic member is interposed in the mounting portion of the connecting member, so that the elastic member has excellent wear resistance, and the connection of the connecting member can be smoothly performed by the elastic action of the elastic member.
[0008]
Also, a central working body having a rotatable earth-removing rotary that can be mounted on a tractor, and an extension having a rotatable extending earth-revolving rotary for extending the working width to the left and right so as to be foldable with respect to the central working body. A folding agricultural working machine comprising a working body and a connecting body for connecting an axis between the extended soil breaking rotary of the extension working body and the earth breaking rotary of the central working body, wherein the connecting body has a pair of clutches. At least one of the pair of clutches has an elastic body interposed in the mounting portion with the rotary, so that the elasticity of the elastic body allows the connecting body to be flexible and the connecting body can be smoothly connected. The shaft of the crushed earth rotary and the crushed earth extended rotary shaft are not coaxially arranged, and even when eccentric with an angle, the elastic body absorbs the eccentricity and smoothly transmits the rotational drive. .
[0009]
In addition, by forming the pair of engaging members constituting the connecting member to have the same shape, when the engaging surfaces are engaged, there is no impact at the time of driving transmission and no damage occurs.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 is a plan view of a folding agricultural working machine embodying the present invention, FIG. 2 is a rear view, FIG. 3 is a side view, FIG. 4 is a drive transmission diagram, FIG. 5 is an enlarged sectional view of a connecting body, and FIG. It is an action figure of an elastic body.
[0011]
In FIG. 1, FIG. 2 and FIG. 3, A is a folding agricultural working machine, which is composed of three parts: a central working body and extended working bodies 2 and 2 extending the working width to the left and right. The central working body 1 includes a center frame 11 extending left and right, a transmission case 12 provided to be sandwiched in front of the center of the center frame 11, and a tractor mounting mast 13 further protruding forward of the transmission case 12. An input shaft 12a protrudes in front of the transmission case 12, and a universal joint (not shown) is connected to the tractor so as to transmit a drive from a PTO shaft of the tractor. It is attached to a three-point link mechanism.
[0012]
At the lower portion of the transmission case 12, there are provided a crushing rotary 14, 14 which is a drive shaft extending in the left-right horizontal direction and rotatably provided, and a center cover 15 which covers the upper portion of the crushing rotary 14, 14. A first center leveler 16 fixed to side plates 11L and 11R provided at both ends at a lower portion of the center frame 11, and supported behind both ends by a first center leveler 16 rotatable vertically and a first center leveler 16 A second center leveler 17 that supports both ends and is vertically rotatable at the rear is provided, and a center leveler is configured.
[0013]
The extension working bodies 2 and 2 are extended cover frames 21 and 21 in which a frame and a cover are integrated, and an extended clay which is a driven shaft rotatably supported at both ends below the extension cover frames 21 and 21. Behind the rotaries 22 and 22, and the extension cover frames 21 and 21, there are first extension levelers 23 and 23 which support both ends and are vertically rotatable. Second extension levelers 24, 24, which are rotatably supported up and down and are rotatably supported at both ends, constitute an extension leveler.
[0014]
The connecting portion between the central working body 1 and the extension working bodies 2 and 2 is formed in a U-shape with rotating brackets 18 and 18 having rotating holes provided at both ends of the center frame 11 and the extension cover frames 21 and 21. The extension rotating brackets 25, 25 having a rotating hole formed in a shape are overlapped, the rotating shafts 2a, 2a are inserted with the rotating holes aligned, and the extension working bodies 2, 2 are extended at the time of extension work. It is pivotally supported and connected to be in an unfolded state and in a folded state during moving and storage when not working.
[0015]
Reference numeral 3 denotes a leveler operating means for switching the second center leveler 17 and the second extended levelers 24, 24 between a soil collecting work position where the mud is scraped and a scraping work position where the mud is leveled evenly. By rotating the 31 forward and backward, the second center leveler 17 and the second extension levelers 24 and 24 are fixed and held, and a soil collecting operation position where the mud is scraped, and a fixing operation where the fixing is released and the mud is leveled evenly. The position can be switched.
[0016]
Reference numerals 4 and 4 denote extension work lock devices, which are arranged at the front connecting portions of the central work body 1 and the extension work bodies 2 and 2, and fix the extension work bodies 2 and 2 in an expanded state at the time of extension work. An engagement plate 41 having a U-shaped notch at both front ends of the center frame 11, and an engagement hook always elastically held in a locking direction below the engagement plates 41, 41. 42, 42 are provided so as to be rotatable in the horizontal direction, and are engaged with U-shaped notches provided in the engagement plates 41, 41 at the inner front portions of the extension cover frames 21, 21; An engaging bracket 43 having an engaging pin engaged by the engaging hooks 42, 42 is provided so that the extension working bodies 2, 2 can be fixed in a deployed state during extension work, and unlocking is provided on the engaging hook 42. The lever 42a in the release direction. It can be unlocked by.
[0017]
Reference numeral 5 denotes a folding lock device which is arranged at both rear end portions of the central working body 1 and fixes the extended working bodies 2 and 2 in a folded state at the time of moving and storing when not working. , 11a which are pivotally supported in the horizontal direction so as to be rotatable in the horizontal direction and which have hook-shaped notches and which are elastically held in the locking direction; When the extension working bodies 2 and 2 are folded and rotated, the folding engagement pins 52 are engaged with the folding engagement hooks 51 and 51 and the extension working bodies 2 , 2 are fixed in the folded state at the time of moving and storing. The lock can be released by rotating the levers 51a, 51a provided on the folding engagement hooks 51, 51 in the release direction.
[0018]
Numerals 6 and 6 are connected bodies disposed at the outer ends of the crushed earth rotaries 14 and 14 and at the inner ends of the extended crushed earth rotaries 22 and 22 to transmit power to the extended crushed earth rotaries 22 and 22.
[0019]
Reference numeral 7 denotes a leveler connecting device which connects the second center leveler 17 and the second extended levelers 24, 24 at the time of extension work, and is rotatable in the vertical direction on the inner end of the second extended levelers 24, 24. When the lock plates 71, 71 pivotally supported by the second center leveler 17 abut against the end of the second center leveler 17, the lock plates 71, 71 are rotated downward. The second center leveler 17 and the second extension levelers 24, 24 are fixedly held by holding the end of the second leveler from above.
[0020]
Reference numeral 8 denotes a leveler fixing device, which is provided at substantially the inner end of the extension working bodies 2L and 2R, and is the first extension when the extension working bodies 2 and 2 are in a folded state during moving and storage when not working. The second levelers 24 and 24 are fixed so that the levelers 23 and 23 and the second extended levels 24 and 24 do not flutter. The second extended levels 24 and 24 are connected to the extended cover frames 21 and 21 or the link 81 and the link 81. The first extension levelers 23, 23 and the first extension levelers 23, 23 are formed by engaging the engagement hooks 82 with the link body 81 in a folded state during the movement and storage, which is a non-working time. The second extension levelers 24, 24 are fixed so as not to flutter.
[0021]
G is composed of a gas chamber filled with high-pressure gas by a gas spring and a piston lot that compresses. The piston lot has a repulsive force in the direction of extension. The resilient force is used to fold the extended working bodies 2 and 2 around. It assists the moving operation.
[0022]
In FIG. 4, the drive transmission will be described. Although not shown, drive is transmitted to an input shaft 12a connected to a tractor PTO shaft via a universal joint, and is reduced by bevel gears 12b and 12c provided in the transmission case 12. A drive shaft 12d is provided in the horizontal direction by the bevel gear 12c, a sprocket 12e is provided substantially in the center, a chain 12g is laid on a sprocket 12f provided below the sprocket 12e, and the lower end of the transmission case 12 is further reduced in speed. The drive is transmitted to the output shaft 12h projecting left and right. The crushed soil rotaries 14, 14 are attached to both ends of the output shaft 12h and are driven to rotate.
[0023]
Each of the crushed soil rotaries 14 and 14 is configured such that a crushed clay claw 14b can be removably attached to a plurality of claw holders 14c spirally provided on the circumference of the crushed clay rotary shafts 14a and 14a, and the outer end portion is a bearing retainer 14d. , 14d, and can be driven to rotate to break mud.
[0024]
The extended clay-spinning rotaries 22 and 22 are configured to be detachable by having a plurality of spirally arranged claw holders 14b on the circumference of the extended clay-spinning rotary shafts 22a and 22a and having a clay-crushing claw 14b. Reference numeral 22 denotes an inner end supported by the bearing retainer 14d, and an outer end supported by bearing retainers 22b, 22b provided inside the side plates 21a, 21a constituting the extension cover frames 21, 21 so as to be rotatable. is there. A pair of connecting members 6 and 6 are provided at the outer end of the crushed soil rotary 14 and at the inner end of the extended crushed rotary 22 and extend the rotary force from the crushed rotary 14 and 14. 22, 22 are configured to be able to transmit drive.
[0025]
FIG. 5 shows a drive transmission connecting portion to the extension work bodies 2 and 2, and connection bodies 6 provided at the outer end of the earth breaking rotary 14 and the inner end of the extension earth turning rotary 22, respectively. 6 has the same configuration, and only one will be described.
[0026]
The connecting body 6 includes a central connecting body 6a provided at an outer end of the ground breaking rotary 14 of the central working body 1 and an extension connecting body 6b provided at an inner end of the extending ground rotary 22 of the extension working body 2. Consists of
[0027]
The center connecting body 6a is provided with a clutch rotor shaft 61 at an end of the clutch rotor shaft 61 that is fitted to a spline formed at a shaft end protruding from a bearing retainer 14d of the clay crushing rotary shaft 14a of the clay crushing rotary 14. The clutch 62 includes a clutch 62 attached to the clutch attachment plate 61a, and an elastic body 63 interposed between the clutch 62 and the clutch attachment plate 61a.
[0028]
The extension coupling body 6b includes an extension clutch rotor shaft 64 fitted to a spline formed at a shaft end of the extension rotary shaft 22a of the extension rotary shaft 22a protruding from the bearing retainer 14d, and an end of the extension clutch rotor shaft 64. A clutch 62 having the same shape as the clutch 62 attached to the end of the clutch rotor shaft 61 is attached to the clutch attachment plate 64a provided between the clutch 62 and the clutch attachment plate 64a of the extension clutch rotor shaft 64 in the same manner as described above. It is configured with an elastic body 63 interposed.
[0029]
The clutches 62, 62 of the same shape have a disk-shaped base having an end surface in the horizontal direction, and an engagement piece 62a having a front end having a mountain shape and having a contact surface radiating from the center of the base is protruded. A mounting pin 62b protrudes from the back surface of the base having the above.
[0030]
The mounting portions of the clutches 62, 62 with respect to the clutch rotor shaft 61 and the extension clutch rotor shaft 64 have the same configuration, and mounting pins 62b of the clutches 62, 62 have elastic members 63 interposed in mounting holes opened in the clutch mounting plates 61a, 64a. Then, it is attached with the lock nut 65.
[0031]
Further, on the outer peripheral portions of the clutch rotor shaft 61 and the extension clutch rotor shaft 64, there are detachably provided crushing claws 14b for crushing the remaining tillage of the connecting body 6.
[0032]
The connecting operation of the connecting body 6 and the operation of the elastic body 63 will be described with reference to FIG. With respect to the central working body 1, the extended connecting bodies 6 b provided at the inner ends of the extending working bodies 2 and 2 extending the working width to the left and right enter the central connecting bodies 6 a provided at both ends of the central working body 1. Come. Then, the clutches 62, 62 provided at the opposed shaft ends of the central connector 6a and the extension connector 6b come into contact with each other. At this time, the engagement pieces 62a protruding from the base opposing surfaces of the clutches 62, 62 smoothly mesh with each other due to the mountain shape at the tip end.
[0033]
In addition, since the elastic body 63 is interposed in the attachment portion of the clutch 62, the elastic body 63 is compressed when it comes into contact with the central connecting body 6a at the time of contact, the entering angle is reduced, and the engaging pieces 62a are smoothly meshed.
[0034]
When the extension work body 2 is fixedly held in the expanded state by the extension work lock device 4, the clutch 62 of the center connection body 6a and the clutch 62 of the extension connection body 6b are completely engaged. At this time, the engaging pieces 62a of the clutches 62, 62 have abutting surfaces radially from the center of the base, so that they are coaxially engaged without shifting up, down, left and right, and extend the rotational power from the crushing rotary 14 to extend the crushing rotary. 22.
[0035]
Further, even if the shaft cores of the crushed earth rotary 14 and the extended crushed earth rotary 22 have a slight angle, the elastic body 63 interposed between the mounting portions of the clutches 62, 62 performs a flexible operation and the clutches 62, 62. It is possible to transmit the drive while maintaining the meshing of.
[0036]
【The invention's effect】
With the above-described configuration, the engagement operation of the clutch for transmitting the drive can be smoothly performed by the action of the elastic body, and the shaft of the ground shaking rotary shaft that is the drive shaft and the extended earth shaking rotary shaft that is the driven shaft is slightly moved. The elastic body interposed in the attachment portion of the clutch, which is the coupling body, performs a flexible operation even when the angle is set to the above, and the drive can be transmitted while maintaining the engagement of the clutch.
[0037]
By making the clutch for transmitting the drive the same shape, there is no shock that the engaging piece hits the engaging piece at the time of the drive transmission and the clutch is not damaged, and the parts can be shared and the parts management is facilitated.
[Brief description of the drawings]
FIG. 1 is a plan view of a folding agricultural machine. FIG. 2 is a rear view. FIG. 3 is a side view. FIG. 4 is a drive transmission diagram. FIG. 5 is an enlarged sectional view of a connected body. FIG. Figure [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Central working body 11 Center frame 11a Rotating bracket 12 Transmission case 12a Input shaft 12h Output shaft 13 Tractor mounting mast 14 Crushing rotary 14a Crushing rotary shaft 14b Crushing claw 14d Bearing retainer 15 Center cover 16 First center leveler 17 Second center leveler 18 times Dynamic bracket 2 Extension work body 2a Rotating shaft 21 Extension cover frame 22 Extended soil removal rotary 22a Extended soil removal rotary shaft 22b Bearing retainer 23 First extension leveler 24 Second extension leveler 25 Extension rotation bracket 3 Leveler operating means 31 Operating lever 4 Extension Work lock device 41 Engagement plate 42 Engagement hook 43 Engagement bracket 5 Folding lock device 51 Folding engagement hook 52 Folding engagement pin 6 Connecting body 6a Central connecting body 6b Extension connecting body 61 Clutch rod Motor shaft 61a Clutch mounting plate 62 Clutch 62a Engaging piece 62b Mounting pin 63 Elastic body 64 Extended clutch rotor shaft 64a Clutch mounting plate 7 Leveler coupling device 71 Lock plate 8 Leveler fixing device 81 Link body 82 Engagement hook A Folding agricultural work machine G gas spring

Claims (3)

作業体を2乃至3分割し折り畳み可能に構成し、展開して左右に作業巾を延長する折り畳み農作業機において、前記作業体は作業巾を延長した状態で駆動されるよう駆動軸に連結体を設け、この連結体の取付部に弾性体を介在させたことを特徴とした折り畳み農作業機。In a folding agricultural work machine in which a work body is divided into two or three so as to be foldable and expanded to extend the work width to the left and right, the work body is connected to a drive shaft so as to be driven with the work width extended. A foldable agricultural working machine provided with an elastic body interposed in a mounting portion of the connecting body. トラクタに装着可能とし、回転駆動される砕土ロータリを備えた中央作業体と、この中央作業体に対し折り畳み可能とし、左右に作業巾を延長するため延長砕土ロータリを回転可能に備えた延長作業体とから構成され、前記延長作業体の延長砕土ロータリと前記中央作業体の砕土ロータリとの軸間を連結する連結体を設けた折り畳み農作業機において、前記連結体は一対のクラッチを有し構成され、この一対のクラッチの少なくとも一方はロータリとの取付部に弾性体を介在させたことを特徴とする折り畳み農作業機。A central working body that can be mounted on a tractor and has a rotatably driven soil breaking rotary, and an extended working body that can be folded with respect to the central working body and rotatably provided with an extended ground shading rotary to extend the working width to the left and right. In the folding agricultural working machine provided with a connecting body for connecting the axis of the extended crushing rotary of the extension working body and the crushing rotary of the central working body, the connecting body has a pair of clutches. A folding agricultural working machine wherein at least one of the pair of clutches has an elastic body interposed in a mounting portion with a rotary. 連結体を構成する一対のクラッチは同一形状としたことを特徴とした請求項1及び2記載の折り畳み農作業機。3. The folding agricultural machine according to claim 1, wherein the pair of clutches constituting the coupling body have the same shape.
JP2003127564A 2003-03-29 2003-03-29 Foldable agricultural implement Pending JP2004298165A (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006166765A (en) * 2004-12-15 2006-06-29 Matsuyama Plow Mfg Co Ltd Positioning device and foldable farming implement
JP2006280247A (en) * 2005-03-31 2006-10-19 Kobashi Kogyo Co Ltd Foldable agricultural implement
JP2009225758A (en) * 2008-03-25 2009-10-08 Matsuyama Plow Mfg Co Ltd Farm implement
CN103621202A (en) * 2013-12-24 2014-03-12 湖南农业大学 Inner deflection swinging cutter blade type ditching cutter head and driving device thereof
CN103688611A (en) * 2013-12-24 2014-04-02 湖南农业大学 Externally inclined blade type inverted trapezoidal ditching cutter disc and driving device thereof
JP2020060300A (en) * 2020-01-06 2020-04-16 小橋工業株式会社 Clutch device and farm working machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006166765A (en) * 2004-12-15 2006-06-29 Matsuyama Plow Mfg Co Ltd Positioning device and foldable farming implement
JP2006280247A (en) * 2005-03-31 2006-10-19 Kobashi Kogyo Co Ltd Foldable agricultural implement
JP4532325B2 (en) * 2005-03-31 2010-08-25 小橋工業株式会社 Folding farm work machine
JP2009225758A (en) * 2008-03-25 2009-10-08 Matsuyama Plow Mfg Co Ltd Farm implement
CN103621202A (en) * 2013-12-24 2014-03-12 湖南农业大学 Inner deflection swinging cutter blade type ditching cutter head and driving device thereof
CN103688611A (en) * 2013-12-24 2014-04-02 湖南农业大学 Externally inclined blade type inverted trapezoidal ditching cutter disc and driving device thereof
CN103688611B (en) * 2013-12-24 2014-07-16 湖南农业大学 Externally inclined blade type inverted trapezoidal ditching cutter disc and driving device thereof
CN103621202B (en) * 2013-12-24 2014-08-20 湖南农业大学 Inner deflection swinging cutter blade type ditching cutter head and driving device thereof
JP2020060300A (en) * 2020-01-06 2020-04-16 小橋工業株式会社 Clutch device and farm working machine

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