JP4154547B2

JP4154547B2 - Work machine coupling device

Info

Publication number: JP4154547B2
Application number: JP37227998A
Authority: JP
Inventors: 功皆川; 毅飯岡
Original assignee: 株式会社富士トレーラー製作所
Priority date: 1998-12-28
Filing date: 1998-12-28
Publication date: 2008-09-24
Anticipated expiration: 2018-12-28
Also published as: JP2000188908A

Description

【０００１】
【発明の属する技術分野】
本発明は例えば走行機体に整畦作業機、整地作業機、収穫作業機、育成管理作業機、運搬作業機、高所作業機等の各種の農園芸作業機を連結する際に用いられる作業機連結装置に関するものである。
【０００２】
【従来の技術】
従来この種の作業機連結装置として、走行機体としてのトラクタの後部の左右下部に枢着突設され、走行機体の左右一対の油圧アームにより各吊下アームを介して上下揺動自在に設けられた左右一対の下部リンク及び走行機体の後部の上部に枢着突設された上部リンクからなる、いわゆる三点リンク式連結機構が知られている。
【０００３】
しかして、各種の作業機体を左右一対の下部リンク及び上部リンクの各先端部に三点支持状態に枢着連結し、かつ、走行機体の左右一対の油圧アームの上下揺動により各吊下アームを介して下部リンクを上下揺動させることにより作業機体を上下動自在に連結するように構成している。
【０００４】
【発明が解決しようとする課題】
しかしながら上記従来構造の場合、各種作業機体を上下動作させることにより各種作業機体の作業内容及び作業条件等に対応させることはできるものの、走行機体の進行方向に対して側方方向に移動させ得ない構造であり、このため、例えば、走行機体の車輪や履帯の配設位置上から走行機体の一方側方位置又は他方側方位置に突出配置される構造の作業機においては、運搬時や不使用時等の非作業時等において、側方に突出した作業機の存在により小回り走行を阻害したり、側方に偏位した重量により走行機体の運転走行操作の不安定性を招くおそれがあり、又、作業機体の作業内容によっては、走行機体の一方側方位置又は他方側方位置に突出配置させたいこともあり、作業機体の配置の融通性が低下していることにより、作業能率の低下を生じさせることがあるという不都合を有している。
【０００５】
【課題を解決するための手段】
本発明はこのような不都合を解決することを目的とするもので、本発明のうちで、請求項１記載の発明は、走行機体に連結機構により連結部材を連結し、該連結部材に各種作業機構をもつ作業機体を配設し、該連結部材と作業機体との間に該作業機体を上記走行機体の中程後方位置又は一方側方位置若しくは他方側方位置に位置変更させる位置変更機構を配設してなり、上記位置変更機構として、上記連結部材の一方側方位置に第一旋回軸を縦設すると共に上記連結部材の他方側方位置に第二旋回軸を縦設し、上記作業機体を上記連結部材に対して第一旋回軸により中程後方位置と一方側方位置との間で旋回動作自在に配設すると共に第二旋回軸により中程後方位置と他方側方位置との間で旋回動作自在に配設し、該作業機体を第一旋回軸又は第二旋回軸を中心として旋回動作させる旋回機構と、該第一及び第二旋回軸を挿脱動作させる挿脱機構とを配設して構成したことを特徴とする作業機連結装置にある。
【０００６】
又、請求項２記載の発明は、上記旋回機構に旋回用油圧シリンダを配設してなることを特徴とするものであり、又、請求項３記載の発明は、上記挿脱機構に上記第一及び第二旋回軸を兼ねる挿脱用油圧シリンダを配設してなることを特徴とするものである。
【０００７】
【発明の実施の形態】
図１乃至図９は本発明の実施の形態例を示し、１は走行機体であって、この場合車輪１ａを備えたトラクタが用いられ、走行機体１の後部に三点リンク式の連結機構２により連結部材３を上下動可能に連結している。
【０００８】
この場合、連結機構２は、走行機体１としてのトラクタの後部の左右下部に一対の下部リンク４・４がピン４ａにより枢着突設され、走行機体１に左右一対の油圧アーム５が作動軸５ａを中心として上下揺動操作自在に突設され、かつ、走行機体１の後部の上部に上部リンク６がピン６ａにより枢着突設され、下部リンク４・４と油圧アーム５との間に吊下アーム５ｂを架設し、しかして、左右一対の下部リンク４・４の先端部にピン４ｂ・４ｂにより連結部材３の下部両側部を枢着連結すると共に上部リンク６の先端部にピン６ｂにより連結部材３の上部を連結し、これら三点支持及び油圧アーム５の上下揺動により連結部材３を上下揺動自在に設けて構成している。
【０００９】
７は作業機体であって、各種の作業機構Ｑが配備されている。
【００１０】
又、この場合、連結部材３は箱状に形成され、内部に油圧ポンプＴ₁及び油圧タンク、流路切換弁等からなる油圧ユニットＴが内装され、油圧ポンプＴ₁を走行機体１に既設の動力取出軸８により自在継手９を介して駆動させ、各種の作業機構Ｑの油圧モータ等の油圧源として用いるように構成している。
【００１１】
１０は位置変更機構であって、上記連結部材３と上記作業機体７との間に配設され、この作業機体７を連結部材３に対して走行機体１の中程後方位置Ｆ又は一方側方位置Ｅ若しくは他方側方位置Ｇの三位置に位置変更させるように構成され、この場合、上記連結部材３の一方側方位置に第一旋回軸１１を縦設すると共に上記連結部材３の他方側方位置に第二旋回軸１２を縦設し、上記作業機体７を第一旋回軸１１により中程後方位置Ｆと一方側方位置Ｅとの間で旋回動作自在に配設すると共に第二旋回軸１２により中程後方位置Ｆと他方側方位置Ｇとの間で旋回動作自在に配設し、作業機体７を第一旋回軸１１又は第二旋回軸２を中心として旋回動作させる旋回機構１３と、第一及び第二旋回軸１１・１２を挿脱動作させる挿脱機構１４とを配設して構成している。
【００１２】
この場合、旋回機構１３として、旋回用油圧シリンダ１５が用いられ、連結部材３の底部に旋回用油圧シリンダ１５のシリンダ部１５ａを枢軸１６により枢着連結し、旋回用油圧シリンダ１５のロッド部１５ｂを作業機体７の底部に枢軸１７により枢着連結し、旋回用油圧シリンダ１５のロッド部１５ｂの進退動作により作業機体７を連結部材３に対して第一旋回軸１１中心として中程後方位置Ｆと一方側方位置Ｅとの間又は第二旋回軸１２を中心として中程後方位置Ｆと他方側方位置Ｇとの間で旋回動作自在に構成している。
【００１３】
又、この場合、挿脱機構１４として、上記第一旋回軸１１及び第二旋回軸１２を兼ねる挿脱用油圧シリンダＳ・Ｓが用いられている。
【００１４】
この場合、連結部材３の後面左右両側部に縦桟１８・１８を縦設し、各縦桟１８・１８に中程部及び上下部分に配置した取付ブラケット１９により挿脱用油圧シリンダＳ・Ｓとしての第一旋回軸１１及び第二旋回軸１２を縦設し、挿脱用油圧シリンダＳ・Ｓはシリンダ部Ｓ₂の上下両端部にそれぞれロッド部Ｓ₁・Ｓ₁を突没自在に設けてなり、一方、作業機体７の前面左右両側部に縦枠板２０・２０を縦設し、各縦枠板２０・２０の上下部分にロッド部Ｓ₁・Ｓ₁が挿脱可能な挿脱穴部２１・２１を設けて構成している。
【００１５】
この実施の形態例は上記構成であるから、走行機体１に連結機構２により連結部材３を連結し、連結部材３に各種の作業機構Ｑをもつ作業機体７を取付け、位置変更機構１０により作業機体７を連結部材３に対して走行機体１の一方側方位置Ｅ又は中程後方位置Ｆ若しくは他方側方位置Ｇの三位置に位置変更させる際、位置変更機構１０として、上記連結部材３の一方側方位置に第一旋回軸１１を縦設すると共に上記連結部材３の他方側方位置に第二旋回軸１２を縦設し、上記作業機体７を第一旋回軸１１により一方側方位置Ｅと中程後方位置Ｆとの間で旋回動作自在に配設すると共に第二旋回軸１２により中程後方位置Ｆと他方側方位置Ｇとの間で旋回動作自在に配設し、作業機体７を第一旋回軸１１又は第二旋回軸２を中心として旋回動作させる旋回機構１３と、第一及び第二旋回軸１１・１２を挿脱動作させる挿脱機構１４とを配設しているので、作業機構Ｑを中程後方位置Ｆに配置する場合には、図３の如く、第一旋回軸１１としての挿脱機構１４の挿脱用油圧シリンダＳのロッド部Ｓ₁・Ｓ₁を挿脱穴部２１に挿入すると共に第二旋回軸１２としての挿脱用油圧シリンダＳのロッド部Ｓ₁・Ｓ₁を挿脱穴部２１に挿入することになり、又、作業機構Ｑを一方側方位置Ｅに配置する場合には、図５、図６、図７、図８の如く、第二旋回軸１２としての挿脱機構１４の挿脱用油圧シリンダＳのロッド部Ｓ₁・Ｓ₁を挿脱穴部２１から抜脱したのち旋回機構１３の旋回用油圧シリンダ１５により作業機体７を第一旋回軸１１を中心として中程後方位置Ｆから一方側方位置Ｅへと旋回動作させることになり、又、作業機構Ｑを他方側方位置Ｇに配置する場合には、作業機体７を第一旋回軸１１を中心として図３の中程後方位置Ｆに逆旋回動作させ、第二旋回軸１２としての挿脱機構１４の挿脱用油圧シリンダＳのロッド部Ｓ₁・Ｓ₁を挿脱穴部２１に挿入し、その後、図９の如く、第一旋回軸１１としての挿脱機構１４の挿脱用油圧シリンダＳのロッド部Ｓ₁・Ｓ₁を挿脱穴部２１から抜脱したのち旋回機構１３の旋回用油圧シリンダ１５により作業機体７を第二旋回軸１２を中心として中程後方位置Ｆから他方側方位置Ｇへと旋回動作させることになり、従って、第一旋回軸１１及び第二旋回軸１２を中心として作業機体７を旋回機構１３及び挿脱機構１４の協働により走行機体１の中程後方位置Ｆ若しくは一方側方位置Ｅ又は他方側方位置Ｇの三位置に位置変更させる構造であるから、作業機構Ｑを中程後方位置Ｆに配置した場合の作業機構Ｑの後方への突出量を小さくすることができ、走行機体１の小回り走行性及び走行機体１の安定走行性を高めることができると共に作業機構Ｑの配置の融通性を高めることができ、かつ運搬及び保管の融通性を高めることができ、更に、位置変更機構１０の構造を簡素化することができ、製作コストの低減を図ることができると共に位置変更作業を容易に行うことができる。
【００１６】
又、この場合、上記旋回機構１３に旋回用油圧シリンダ１５・１５を配設してなるから、作業機構の位置変更を容易に行うことができ、又、この場合、上記挿脱機構１４に第一及び第二旋回軸１１・１２を兼ねる挿脱用油圧シリンダＳ・Ｓを配設しているから、第一及び第二旋回軸１１・１２の挿脱を容易に行うことができると共に挿脱構造を簡素化することができる。
【００１７】
尚、本発明は上記実施の形態例に限られるものではなく、例えば、作業機構Ｑとして、整畦作業機、対土作業用、整地用、収穫用、育成管理用、運搬用等の各種の農作業及び土木作業機の連結に適用することができ、又、位置変更機構１０は上記実施例に限られるものではなく、又、作業機体７を上記三位置に位置固定する構造を付加することもあり、又、旋回用油圧シリンダ１５に代えて作業機体７を各種アクチュエータにより自動的に旋回動作させる構造を採用することもできる。
【００１８】
【発明の効果】
本発明は上述の如く、請求項１記載の発明にあっては、位置変更機構として、上記連結部材の一方側方位置に第一旋回軸を縦設すると共に上記連結部材の他方側方位置に第二旋回軸を縦設し、上記作業機体を上記連結部材に対して第一旋回軸により中程後方位置と一方側方位置との間で旋回動作自在に配設すると共に第二旋回軸により中程後方位置と他方側方位置との間で旋回動作自在に配設し、該作業機体を第一旋回軸又は第二旋回軸を中心として旋回動作させる旋回機構と、該第一及び第二旋回軸を挿脱動作させる挿脱機構とを配設して構成したから、第一旋回軸及び第二旋回軸を中心として作業機体を旋回機構及び挿脱機構の協働により走行機体の中程後方位置若しくは一方側方位置又は他方側方位置の三位置に位置変更させることができ、作業機構を中程後方位置に配置した場合の作業機構の後方への突出量を小さくすることができ、走行機体の小回り走行性及び走行機体の安定走行性を高めることができると共に作業機構の配置の融通性を高めることができ、かつ運搬及び保管の融通性を高めることができ、更に、位置変更機構の構造を簡素化することができ、製作コストの低減を図ることができると共に位置変更作業を容易に行うことができる。
【００１９】
又、請求項２記載の発明にあっては、上記旋回機構に旋回用油圧シリンダを配設してなるから、作業機構の位置変更を容易に行うことができ、又、請求項３記載の発明にあっては、上記挿脱機構に第一及び第二旋回軸を兼ねる挿脱用油圧シリンダを配設しているから、第一及び第二旋回軸の挿脱を容易に行うことができると共に挿脱構造を簡素化することができる。
【００２０】
以上の如く、所期の目的を充分達成することができる。
【図面の簡単な説明】
【図１】本発明の実施の形態例の全体側面図である。
【図２】本発明の実施の形態例の拡大側面図である。
【図３】本発明の実施の形態例の平面図である。
【図４】本発明の実施の形態例の後面図である。
【図５】本発明の実施の形態例の部分断面図である。
【図６】本発明の実施の形態例の部分断面図である。
【図７】本発明の実施の形態例の平面図である。
【図８】本発明の実施の形態例の作動状態の平面図である。
【図９】本発明の実施の形態例の作動状態の平面図である。
【符号の説明】
Ｑ作業機構
Ｅ一方側方位置
Ｆ中程後方位置
Ｇ他方側方位置
Ｓ挿脱用油圧シリンダ
１走行機体
２連結機構
３連結部材
７作業機体
１０位置変更機構
１１第一旋回軸
１２第二旋回軸
１３旋回機構
１４挿脱機構
１５旋回用油圧シリンダ[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, a work machine used when various agricultural and horticultural work machines such as a grading work machine, a leveling work machine, a harvesting work machine, a breeding management work machine, a transport work machine, and an aerial work machine are connected to a traveling machine body. The present invention relates to a coupling device.
[0002]
[Prior art]
Conventionally, as this type of work machine coupling device, it is pivotally mounted on the left and right lower parts of the rear part of the tractor as a traveling machine body, and is provided so as to be swingable up and down via each suspension arm by a pair of left and right hydraulic arms of the traveling machine body. A so-called three-point link type coupling mechanism is known, which is composed of a pair of left and right lower links and an upper link pivotally mounted on the rear upper part of the traveling machine body.
[0003]
Thus, various working machines are pivotally connected in a three-point support state to the distal ends of a pair of left and right lower links and upper links, and each suspension arm is moved by vertically swinging a pair of left and right hydraulic arms of the traveling machine. The work machine body is configured so as to be movable up and down by swinging the lower link up and down via.
[0004]
[Problems to be solved by the invention]
However, in the case of the above conventional structure, it is possible to correspond to the work contents and work conditions of various work machines by moving the various work machines up and down, but it cannot be moved in the lateral direction with respect to the traveling direction of the traveling machine. For this reason, for example, in a work machine having a structure that protrudes from one side position or the other side position of the traveling machine body from the position of the wheel or crawler belt of the traveling machine body, it is not transported or used. During non-working time, etc., there is a risk of obstructing the small turn due to the presence of the work machine protruding sideways, or instability of the driving operation of the traveling machine due to the weight displaced to the side. Depending on the work content of the work machine body, it may be desirable to project it to one side position or the other side position of the traveling machine body, and the work efficiency is reduced due to the reduced flexibility of the work machine body arrangement. It has the disadvantage that it may cause.
[0005]
[Means for Solving the Problems]
SUMMARY OF THE INVENTION The present invention aims to solve such inconveniences. Among the present inventions, the invention according to claim 1 connects a connecting member to a traveling machine body by a connecting mechanism, and performs various operations on the connecting member. A position change mechanism that arranges a work machine body having a mechanism and changes the position of the work machine body between the connecting member and the work machine body to a middle rear position or one side position or the other side position of the traveling machine body. As the position changing mechanism, a first swivel shaft is vertically provided at one side position of the connecting member and a second swivel shaft is vertically provided at the other side position of the connecting member. The fuselage is disposed so as to be pivotable between a middle rear position and one lateral position with respect to the connecting member by a first pivot axis, and between the middle rear position and the other lateral position by a second pivot axis. turning operation freely disposed between, and the first pivot axis said working machine body A turning mechanism for turning movement about a second pivot axis, in a working machine coupling apparatus characterized by being configured by arranging the insertion and removal mechanism for inserting and removing operation of the first and second pivot axis.
[0006]
The invention according to claim 2 is characterized in that a turning hydraulic cylinder is disposed in the turning mechanism, and the invention according to claim 3 is characterized in that the insertion / removal mechanism is provided with the first An insertion / removal hydraulic cylinder that also serves as the first and second pivots is provided.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 to 9 show an embodiment of the present invention. Reference numeral 1 denotes a traveling machine body, in which a tractor provided with wheels 1a is used, and a three-point link type connecting mechanism 2 is provided at the rear part of the traveling machine body 1. Thus, the connecting member 3 is connected to be movable up and down.
[0008]
In this case, the connecting mechanism 2 has a pair of lower links 4 and 4 pivoted by pins 4a on the left and right lower portions of the rear portion of the tractor as the traveling machine body 1, and a pair of left and right hydraulic arms 5 are actuated on the traveling machine body 1. The upper link 6 is pivotally mounted by a pin 6 a at the upper part of the rear part of the traveling machine body 1 around the lower link 4, 4 and the hydraulic arm 5. The suspension arm 5b is installed, and the lower side portions of the connecting member 3 are pivotally connected to the distal ends of the pair of left and right lower links 4 and 4 by pins 4b and 4b. Thus, the upper part of the connecting member 3 is connected, and the connecting member 3 is provided so as to be swingable up and down by supporting these three points and swinging the hydraulic arm 5 up and down.
[0009]
Reference numeral 7 denotes a work machine body on which various work mechanisms Q are provided.
[0010]
Further, in this case, the connecting member 3 is formed in a box shape, and a hydraulic unit T including a hydraulic pump T _{1, a} hydraulic tank, a flow path switching valve, and the like is provided therein, and the hydraulic pump T ₁ is installed in the traveling machine body 1. It is configured to be driven by a power take-off shaft 8 through a universal joint 9 and used as a hydraulic source such as a hydraulic motor of various working mechanisms Q.
[0011]
Reference numeral 10 denotes a position changing mechanism, which is disposed between the connecting member 3 and the work machine body 7. The work machine body 7 is located at the middle rear position F of the traveling machine body 1 with respect to the connection member 3 or on one side. In this case, the first turning shaft 11 is provided vertically at one side position of the connecting member 3 and the other side of the connecting member 3 is arranged. A second swivel shaft 12 is provided vertically in the first position, and the work machine body 7 is disposed by the first swivel shaft 11 so as to be swiveled between a middle rear position F and one side position E, and a second swivel. A turning mechanism 13 is arranged so as to be able to turn between the middle rear position F and the other side position G by means of the shaft 12 to turn the work machine body 7 about the first turning shaft 11 or the second turning shaft 2. And an insertion / removal mechanism 14 for inserting / removing the first and second pivot shafts 11 and 12 It is configured to set.
[0012]
In this case, the turning hydraulic cylinder 15 is used as the turning mechanism 13, and the cylinder portion 15 a of the turning hydraulic cylinder 15 is pivotally connected to the bottom of the connecting member 3 by the pivot 16, and the rod portion 15 b of the turning hydraulic cylinder 15 is connected. Is pivotally connected to the bottom of the work machine body 7 by the pivot shaft 17, and the rod body 15 b of the turning hydraulic cylinder 15 moves forward and backward to move the work machine body 7 to the connecting member 3 at the center rear position F. And one side position E or between the rear position F and the other side position G with the second turning shaft 12 as the center.
[0013]
In this case, as the insertion / removal mechanism 14, the insertion / removal hydraulic cylinders S and S that also serve as the first turning shaft 11 and the second turning shaft 12 are used.
[0014]
In this case, the vertical bars 18 and 18 are provided vertically on the left and right sides of the rear surface of the connecting member 3, and the insertion / removal hydraulic cylinders S and S are attached to the vertical bars 18 and 18 by the mounting brackets 19 disposed in the middle and upper and lower portions. The first swivel shaft 11 and the second swivel shaft 12 are vertically provided, and the insertion / removal hydraulic cylinder S / S is provided with rod portions S ₁ and S ₁ that can be protruded and retracted at both upper and lower ends of the cylinder portion S _2. Te becomes, while working vertical frame plates 20, 20 and Tate設the front left and right side portions of the body 7, the rod portion S _1, S ₁ is removably inserted a inserted into and removed from the upper and lower portions of the respective vertical frame plates 20 - 20 The holes 21 and 21 are provided.
[0015]
Since this embodiment is configured as described above, the connecting member 3 is connected to the traveling machine body 1 by the connecting mechanism 2, the working machine body 7 having various working mechanisms Q is attached to the connecting member 3, and the work is performed by the position changing mechanism 10. when to be repositioned on the three position of one lateral position E or middle rear position F or the other lateral position G of the vehicle body 1 a body 7 with respect to the connecting member 3, as the position changing mechanism 10, the connecting member 3 The first turning shaft 11 is vertically provided at one side position, the second turning shaft 12 is vertically provided at the other side position of the connecting member 3, and the work machine body 7 is moved to the one side position by the first turning shaft 11. E and a middle rear position F are disposed so as to be capable of swiveling, and a second swiveling shaft 12 is disposed so as to be capable of swiveling between the middle rear position F and the other side position G. pivots 7 about the first pivot 11 or the second pivot axis 2 Since the turning mechanism 13 to be moved and the insertion / removal mechanism 14 for inserting / removing the first and second turning shafts 11 and 12 are disposed, when the work mechanism Q is disposed at the middle rear position F, As shown in FIG. 3, the rod portions S ₁ and S ₁ of the insertion / removal hydraulic cylinder S of the insertion / removal mechanism 14 as the first turning shaft 11 are inserted into the insertion / removal hole portion 21 and the insertion / removal as the second turning shaft 12 is performed. When the rod portion S ₁ / S ₁ of the hydraulic cylinder S is inserted into the insertion / removal hole portion 21 and the working mechanism Q is disposed at one side position E, FIG. 5, FIG. 7. As shown in FIG. 8, after the rod portions S ₁ and S ₁ of the insertion / removal hydraulic cylinder S of the insertion / removal mechanism 14 as the second rotation shaft 12 are removed from the insertion / removal hole portion 21, The working cylinder 7 is turned from the rear position F to the one side position E about the first turning axis 11 by the hydraulic cylinder 15. In addition, when the work mechanism Q is arranged at the other side position G, the work machine body 7 is reversely swung to the rear position F in the middle of FIG. The rod portions S ₁ and S ₁ of the insertion / removal hydraulic cylinder S of the insertion / removal mechanism 14 as the second turning shaft 12 are inserted into the insertion / removal hole portion 21, and then as the first turning shaft 11 as shown in FIG. After the rod portions S ₁ and S ₁ of the insertion / removal hydraulic cylinder S of the insertion / removal mechanism 14 are removed from the insertion / removal hole portion 21, the work machine body 7 is moved to the second rotation shaft 12 by the rotation hydraulic cylinder 15 of the rotation mechanism 13. Accordingly, the working machine body 7 is turned around the first turning shaft 11 and the second turning shaft 12 around the first turning shaft 11 and the second turning shaft 12. In the middle of the traveling machine 1 in the middle rear position F or one side position E or Since the position is changed to the three positions of the other side position G, the amount of protrusion of the work mechanism Q to the rear when the work mechanism Q is disposed at the middle rear position F can be reduced. Can improve the flexibility of arrangement of the work mechanism Q, the flexibility of transportation and storage, and the position changing mechanism. The structure of 10 can be simplified, the manufacturing cost can be reduced, and the position changing operation can be easily performed.
[0016]
In this case, since the turning hydraulic cylinders 15 and 15 are provided in the turning mechanism 13, the position of the working mechanism can be easily changed. Since the insertion / removal hydraulic cylinders S and S that also serve as the first and second turning shafts 11 and 12 are provided, the first and second turning shafts 11 and 12 can be easily inserted and removed. The structure can be simplified.
[0017]
In addition, this invention is not restricted to the said embodiment, For example, as the working mechanism Q, various kinds, such as a tidy work machine, for anti-soil work, for ground preparation, for harvesting, for growth management, for transportation, etc. The position change mechanism 10 is not limited to the above embodiment, and a structure for fixing the work machine body 7 at the three positions may be added. In addition, a structure in which the work machine body 7 is automatically turned by various actuators instead of the turning hydraulic cylinder 15 may be employed.
[0018]
【The invention's effect】
As described above, according to the present invention, as the position change mechanism, the first turning shaft is vertically provided at one side position of the connecting member and the other side position of the connecting member is provided as the position changing mechanism. A second swivel shaft is provided vertically, and the work machine body is disposed so as to be pivotable between a middle rear position and one side position by the first swivel shaft with respect to the connecting member, and by the second swivel shaft. A swivel mechanism disposed so as to freely swivel between a middle rear position and the other side position, and swiveling the work machine about the first swivel axis or the second swivel axis; and the first and second Since the insertion / removal mechanism for inserting / removing the swivel shaft is disposed, the work machine body is centered on the first swivel axis and the second swivel axis by the cooperation of the swivel mechanism and the insertion / removal mechanism. The position can be changed to the rear position, one side position or the other side position. In addition, when the working mechanism is arranged at the middle rear position, the rearward projecting amount of the working mechanism can be reduced, and it is possible to improve the traveling performance of the traveling machine body and the stable traveling performance of the traveling machine body and the working mechanism. The layout flexibility can be increased, the transportation and storage flexibility can be increased, the structure of the position changing mechanism can be simplified, the production cost can be reduced and the position can be reduced. Change work can be easily performed.
[0019]
In the invention according to claim 2, since the turning hydraulic cylinder is provided in the turning mechanism, the position of the working mechanism can be easily changed, and the invention according to claim 3 is provided. In this case, since the insertion / removal hydraulic cylinder that also serves as the first and second turning shafts is disposed in the insertion / removal mechanism, the first and second turning shafts can be easily inserted and removed. The insertion / removal structure can be simplified.
[0020]
As described above, the intended purpose can be sufficiently achieved.
[Brief description of the drawings]
FIG. 1 is an overall side view of an embodiment of the present invention.
FIG. 2 is an enlarged side view of an embodiment of the present invention.
FIG. 3 is a plan view of an embodiment of the present invention.
FIG. 4 is a rear view of the embodiment of the present invention.
FIG. 5 is a partial cross-sectional view of an embodiment of the present invention.
FIG. 6 is a partial sectional view of an embodiment of the present invention.
FIG. 7 is a plan view of an embodiment of the present invention.
FIG. 8 is a plan view of the operating state of the embodiment of the present invention.
FIG. 9 is a plan view of the operating state of the embodiment of the present invention.
[Explanation of symbols]
Q working mechanism E one side position F middle rear position G other side position S insertion / removal hydraulic cylinder 1 traveling machine body 2 coupling mechanism 3 coupling member 7 working machine body 10 position changing mechanism 11 first turning shaft 12 second turning shaft 13 Turning mechanism 14 Inserting / removing mechanism 15 Turning hydraulic cylinder

Claims

A connecting member is connected to the traveling machine body by a connecting mechanism, a working machine body having various working mechanisms is arranged on the connecting member, and the working machine body is positioned between the connecting member and the working machine body in the middle rear position. Alternatively, a position changing mechanism for changing the position to one side position or the other side position is provided, and as the position changing mechanism, a first turning shaft is provided vertically at one side position of the connecting member and the connection is made. A second swivel shaft is provided vertically at the other side position of the member, and the work machine body is disposed so as to be swiveled between a middle rear position and one side position by the first swivel shaft with respect to the connecting member. And a swivel mechanism that is pivotably arranged between a middle rear position and the other side position by a second swivel shaft, and that swivels the work machine about the first swivel axis or the second swivel axis ; An insertion / removal mechanism for inserting / removing the first and second turning shafts; Working machine coupling apparatus characterized by being configured by arranging.

2. The work machine coupling device according to claim 1, wherein a turning hydraulic cylinder is disposed in the turning mechanism.

3. A work machine coupling device according to claim 1, wherein said insertion / removal mechanism is provided with a hydraulic cylinder for insertion / removal that also serves as a first and a second turning shaft.