JP4303093B2

JP4303093B2 - Agricultural machine

Info

Publication number: JP4303093B2
Application number: JP2003392977A
Authority: JP
Inventors: 厚中沢; 洋一上杉; 一貴小林
Original assignee: 松山株式会社
Priority date: 2003-11-21
Filing date: 2003-11-21
Publication date: 2009-07-29
Anticipated expiration: 2023-11-21
Also published as: JP2005151848A

Description

本発明は、走行車の走行により移動しながら土作業を行う農作業機に関するものである。 The present invention relates to an agricultural machine that performs soil work while moving by traveling of a traveling vehicle.

従来、例えば走行車に連結される固定枠部と、固定枠部に設けられ土作業手段を支持する移動可能な可動枠部と、固定枠部および可動枠部間に直接的に介装され可動枠部の移動を補助するガススプリングとを備え、ガススプリングの一端部（シリンダ部の基端部）が固定枠部に直結されかつガススプリングの他端部（ピストンロッド部の先端部）が可動枠部に直結された畦塗り機等の農作業機が知られている（例えば、特許文献１参照）。
特開２００２−１６５５０２号公報 Conventionally, for example, a fixed frame portion connected to a traveling vehicle, a movable movable frame portion provided on the fixed frame portion and supporting earth working means, and directly interposed between the fixed frame portion and the movable frame portion are movable. A gas spring that assists the movement of the frame, one end of the gas spring (the base end of the cylinder) is directly connected to the fixed frame, and the other end of the gas spring (the tip of the piston rod) is movable Agricultural working machines such as a haze coater directly connected to the frame portion are known (for example, see Patent Document 1).
JP 2002-165502 A

しかしながら、上記従来の農作業機では、ガススプリングを固定枠部および可動枠部間に介装する際に、ガススプリングを自由長より縮めた状態にしなければならないため、ガススプリングの取付けに手間取るおそれがある。 However, in the conventional agricultural machine described above, when the gas spring is interposed between the fixed frame portion and the movable frame portion, the gas spring must be in a state of being contracted from the free length, so there is a risk that it takes time to install the gas spring. is there.

本発明は、このような点に鑑みなされたもので、ガススプリングの取付けが容易にできる農作業機を提供することを目的とする。 This invention is made | formed in view of such a point, and it aims at providing the agricultural machine which can attach a gas spring easily.

請求項１記載の農作業機は、走行車の走行により移動しながら土作業手段で土作業を行う農作業機であって、前記走行車に連結される固定枠部と、この固定枠部に設けられ、第１回動部材および第２回動部材を有し、前記土作業手段が前記走行車の前進走行に基づいて土作業をする前進作業位置、前記土作業手段が前記走行車の後退走行に基づいて土作業をする後退作業位置および前記土作業手段が前記走行車の後方に位置する格納非作業位置に移動し、前記土作業手段を支持する可動枠部と、前記第１回動部材および前記第２回動部材間に回動アームを介して介装され、前記可動枠部の前進作業位置から格納非作業位置への移動および前記可動枠部の後退作業位置から格納非作業位置への移動を補助するガススプリングとを備え、前記第１回動部材の一端部が前記固定枠部に回動可能に連結されかつこの第１回動部材の他端部に前記第２回動部材が回動可能に連結され、前記ガススプリングは、前記第１回動部材に回動可能に連結された前記回動アームに連結され、前記可動枠部が前進作業位置に位置した状態および前記可動枠部が後退作業位置に位置した状態では自由長に比べて縮んだ状態となり、前記可動枠部が格納非作業位置に位置した状態では自由長の状態となり、自由長の状態で前記第１回動部材および前記第２回動部材間に前記回動アームを介して介装可能となっているものである。請 Motomeko 1 agricultural machine according is an agricultural machine for performing soil working with soil working means while moved by the traveling of the vehicle, a fixed frame portion connected to the vehicle, provided on the fixed frame section A forward work position where the earth work means performs earth work based on forward travel of the traveling vehicle, and the earth work means moves backward of the traveling vehicle. A movable frame portion that supports the earth working means, and the first rotating member that moves to a retracted non-working position where the earth working means is located behind the traveling vehicle. And a second arm that is interposed between the second rotating members and moves the movable frame portion from the forward working position to the retracted non-working position and from the retracted working position of the movable frame portion to the retracted non-working position. A gas spring for assisting the movement of the first, One end portion of the moving member is rotatably connected to the fixed frame portion, and the second rotating member is rotatably connected to the other end portion of the first rotating member, and the gas spring is Compared to the free length in the state where the movable frame portion is located at the forward working position and the movable frame portion is located at the backward working position, which is coupled to the pivoting arm that is pivotally coupled to one pivoting member. When the movable frame portion is in the retracted non-working position, the movable arm portion is in a free length state. In the free length state, the rotating arm is interposed between the first rotating member and the second rotating member. It is possible to interpose it through.

請求項１記載の農作業機によれば、ガススプリングを自由長の状態で第１回動部材および第２回動部材間に介装できるため、介装の際にガススプリングを自由長より縮めた状態にする必要がなく、ガススプリングの取付けが容易にでき、しかも、ガススプリングの補助により可動枠部の前進作業位置から格納非作業位置への移動および可動枠部の後退作業位置から格納非作業位置への移動を比較的小さい力で行うことができる。 According to 請 Motomeko 1 agricultural machine according, since it interposed between the first rotating member and second rotating member of the gas spring in a state of free length, shortened than the free length of the gas spring during interposed The gas spring can be easily attached, and with the assistance of the gas spring, the movable frame is moved from the forward working position to the non-storage position and the movable frame is retracted from the backward working position. The movement to the work position can be performed with a relatively small force.

本発明の農作業機の関連技術を図面を参照して説明する。 A related technique of the agricultural machine according to the present invention will be described with reference to the drawings.

図１および図２において、１は農作業機で、この農作業機１は、走行車であるトラクタ（図示せず）に連結して使用する牽引式のものである。 In FIGS. 1 and 2, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is a towing type that is used by being connected to a tractor (not shown) that is a traveling vehicle.

そして、農作業機１は、トラクタの走行により圃場を畦に沿って進行方向に移動しながら、片側の土作業手段２で土作業である畦塗り作業（畦修復作業）を行う畦塗り機である。なお、農作業機１は、土作業手段２を前後反転させた状態でトラクタを後退走行させることにより圃場の端部でも畦塗り作業を行えるリターン作業（後退作業）可能なものである。 The farm work machine 1 is a paddy machine that performs a padding work (soil repairing work), which is a soil work, using the soil work means 2 on one side while moving the farm field in the traveling direction along the paddle by traveling of the tractor. . The farm work machine 1 is capable of a return work (reverse work) in which the tractor can be recharged by moving the tractor backward while the earth work means 2 is reversed forward and backward.

農作業機１は、図示しないトラクタの３点リンク部（作業機昇降支持装置）に連結された固定枠部４と、この固定枠部４に移動可能に設けられ土作業手段２がトラクタの前進走行に基づいて畦塗り作業をする前進作業位置、土作業手段２がトラクタの後退走行に基づいて畦塗り作業をする後退作業位置および土作業手段２がトラクタの後方に位置する格納非作業位置に移動し土作業手段２を支持する可動枠部５と、この可動枠部５をそれら各位置に固定するための固定手段６とを備えている。 The agricultural work machine 1 includes a fixed frame portion 4 connected to a three-point link portion (worker lifting support device) of a tractor (not shown), and a soil working means 2 that is movably provided on the fixed frame portion 4 so that the tractor travels forward. The forward working position for performing the filling operation based on the above, the backward working position for the soil working means 2 based on the backward travel of the tractor, and the retracted non-working position for the soil working means 2 located behind the tractor. A movable frame portion 5 that supports the earth work means 2 and a fixing means 6 for fixing the movable frame portion 5 to each position are provided.

固定枠部４は、トップピンを先端部に有するトップマストとロワピンを先端部に有する左右のロワアームとにて構成された３点連結部（走行車連結部）を有し、この３点連結部にはトラクタの３点リンク部が連結されている。 The fixed frame portion 4 has a three-point connecting portion (traveling vehicle connecting portion) composed of a top mast having a top pin at the tip portion and left and right lower arms having a lower pin at the tip portion. Is connected to the three-point link portion of the tractor.

また、固定枠部４は、ギアボックス等の軸受け部を有し、この軸受け部には前後方向の入力軸が回転可能に設けられている。入力軸には、トラクタのＰＴＯ軸がユニバーサルジョイントおよび伝動シャフト等を介して接続されている。 Moreover, the fixed frame part 4 has bearing parts, such as a gear box, and the input shaft of the front-back direction is rotatably provided in this bearing part. The PTO shaft of the tractor is connected to the input shaft through a universal joint and a transmission shaft.

さらに、固定枠部４は、例えば固着したコ字枠にて構成された被連結部７を有し、この被連結部７の端部には例えば上下方向のピンにて構成されたストッパ部８が設けられている。 Further, the fixed frame portion 4 has a connected portion 7 constituted by, for example, a fixed U-shaped frame, and a stopper portion 8 constituted by, for example, a vertical pin at the end of the connected portion 7. Is provided.

可動枠部５は、互いに長さの異なるそれぞれ長手状の第１回動アーム体11および第２回動アーム体12と、可動フレーム体13とを有している。 The movable frame portion 5 includes a first rotating arm body 11 and a second rotating arm body 12 having different lengths, and a movable frame body 13.

第１回動アーム体11の一端部は固定枠部４に上下方向の軸15を中心として回動可能に連結され、第１回動アーム体11の他端部は可動フレーム体13に上下方向の軸16を中心として回動可能に連結されている。同様に、第２回動アーム体12の一端部は固定枠部４に上下方向の軸17を中心として回動可能に連結され、第２回動アーム体12の他端部は可動フレーム体13に上下方向の軸18を中心として回動可能に連結されている。なお、第２回動アーム体12の長手方向中間部には、被連結部20が一体的に突出形成されている。 One end of the first rotating arm body 11 is connected to the fixed frame portion 4 so as to be rotatable about a vertical axis 15, and the other end of the first rotating arm body 11 is connected to the movable frame body 13 in the vertical direction. The shaft 16 is connected to be rotatable. Similarly, one end portion of the second rotating arm body 12 is connected to the fixed frame portion 4 so as to be rotatable about a vertical axis 17, and the other end portion of the second rotating arm body 12 is connected to the movable frame body 13. Are connected so as to be rotatable about a vertical axis 18. Note that a connected portion 20 is integrally formed to project from the middle portion in the longitudinal direction of the second rotating arm body 12.

そして、可動枠部５の可動フレーム体13には、所定方向に駆動回転しながら土を耕耘して盛り上げる盛土手段であるロータリ21が回転可能に設けられている。ロータリ21は、入力軸からの動力を動力伝達手段を介して受けて所定方向に駆動回転する回転軸と、この回転軸の外周面側から放射状に突出した複数のロータリ爪22とを有している。なお、ロータリ21は、ロータリ爪22の回転時である作業時に土が上方および前方等へ飛散しないように可動フレーム体13のロータリカバー部23にて覆われている。 The movable frame body 13 of the movable frame portion 5 is rotatably provided with a rotary 21 that is a banking means for plowing and raising soil while driving and rotating in a predetermined direction. The rotary 21 has a rotary shaft that receives power from the input shaft via a power transmission means and rotates in a predetermined direction, and a plurality of rotary claws 22 that protrude radially from the outer peripheral surface side of the rotary shaft. Yes. The rotary 21 is covered with a rotary cover portion 23 of the movable frame body 13 so that soil does not scatter upward or forward during work, which is when the rotary claw 22 is rotating.

また、可動枠部５の可動フレーム体13には、所定方向に駆動回転しながら進行方向前方のロータリ21にて盛り上げられた土を締め固めて新たな畦を形成する略筒状の畦形成手段である畦塗り体（ディスク）26が回転可能に設けられている。畦塗り体26は、入力軸からの動力を動力伝達手段を介して受けて所定方向に駆動回転する回転軸と、回転軸に取着され傾斜面状の畦側面を形成する略円錐台状の畦側面形成部材27と、回転軸に取着され水平面状の畦上面を形成する略円筒状の畦上面形成部材28とを有している。 Further, the movable frame body 13 of the movable frame portion 5 has a substantially cylindrical ridge forming means for compacting the soil raised by the rotary 21 ahead in the traveling direction while driving and rotating in a predetermined direction to form a new ridge. A glazed body (disc) 26 is rotatably provided. The glazed body 26 has a substantially frustoconical shape that receives the power from the input shaft through the power transmission means and is driven to rotate in a predetermined direction, and a substantially frustoconical shape that is attached to the rotating shaft and forms an inclined glazed side surface. It has a heel side surface forming member 27 and a substantially cylindrical heel surface forming member 28 that is attached to the rotating shaft and forms a horizontal surface of the heel surface.

さらに、可動枠部５の可動フレーム体13には、ロータリ21より進行方向前方の位置で畦上面を前処理する前処理ロータリ30が回転可能に設けられている。なお、前処理ロータリ30、盛土用のロータリ21および畦塗り体26等にて、土作業である畦塗り作業をする土作業手段２が構成されている。 Further, the movable frame body 13 of the movable frame portion 5 is rotatably provided with a pretreatment rotary 30 that pretreats the upper surface of the saddle surface at a position ahead of the rotary 21 in the traveling direction. The pretreatment rotary 30, the embankment rotary 21, and the hammered body 26 constitute a soil working means 2 for performing a sanding work as a soil work.

また、可動枠部５の可動フレーム体13には、ロータリ21の側方位置、すなわち例えばロータリ21の進行方向右側方の位置で修復前の畦上面に追従しながら進行方向外側方への土の飛散を防止する略板状のサイドカバー31が支持リンク32を介して設けられている。 In addition, the movable frame body 13 of the movable frame portion 5 has a soil on the lateral side of the rotary 21, that is, for example, on the right side of the rotational direction of the rotary 21, while following the upper surface of the heel before repair, A substantially plate-like side cover 31 that prevents scattering is provided via a support link 32.

また一方、農作業機１は、固定枠部４および可動枠部５間にやや長手状の１つの回動体である回動アーム40を介して介装され、トラクタの３点リンク部による持上げ状態時において可動枠部５を比較的小さい力で移動操作できるよう徐々に伸びながら可動枠部５の前進作業位置から格納非作業位置への移動（斜め上方移動）および可動枠部５の後退作業位置から格納非作業位置への移動（斜め上方移動）を補助する伸縮可能な１本のガススプリング41を備えている。 On the other hand, the agricultural machine 1 is interposed between the fixed frame portion 4 and the movable frame portion 5 via a rotating arm 40 that is a slightly long rotating body, and is lifted by the three-point link portion of the tractor. The movable frame portion 5 is moved from the forward working position to the retracted non-working position (moving obliquely upward) and gradually moved from the backward working position of the movable frame portion 5 while being gradually extended so that the movable frame portion 5 can be moved and operated with a relatively small force. A gas spring 41 that can be expanded and contracted to assist the movement to the retracted non-working position (moving obliquely upward) is provided.

そして、このガススプリング41は、自由長（最大長）の状態で固定枠部４および可動枠部５間に回動アーム40を介して介装可能、すなわち例えば自由長のまま着脱可能となっている。 The gas spring 41 can be interposed between the fixed frame portion 4 and the movable frame portion 5 via a rotating arm 40 in a free length (maximum length) state, that is, for example, can be attached / detached with a free length. Yes.

なお、このガススプリング41は、移動補助の機能に加え、トラクタの３点リンク部による持上げ状態時において可動枠部５がこの可動枠部５の自重および土作業手段２の自重等により急激に移動（斜め下方移動）することがないよう徐々に縮みながら可動枠部５の格納非作業位置から前進作業位置への移動速度および可動枠部５の格納非作業位置から後退作業位置への移動速度を減少させる速度減少の機能（ダンパー機能）も発揮する。 In addition to the movement assist function, the gas spring 41 is moved rapidly by the weight of the movable frame 5 and the weight of the soil working means 2 when the movable frame 5 is lifted by the three-point link portion of the tractor. The moving speed of the movable frame portion 5 from the retracted non-working position to the forward working position and the moving speed of the movable frame portion 5 from the retracted non-working position to the backward working position are gradually reduced so as not to move (obliquely downward). The function of reducing speed (damper function) is also demonstrated.

ここで、図３および図４にも示すように、ガススプリング41は、窒素ガス等の高圧ガスが内側に充填された略筒形状をなすシリンダ部42と、このシリンダ部42内にこのシリンダ部42に対して突出長さ変更可能に挿入されこのシリンダ部42の先端部から突出するピストンロッド部43とを有している。 Here, as shown in FIGS. 3 and 4, the gas spring 41 includes a cylinder portion 42 having a substantially cylindrical shape filled with a high-pressure gas such as nitrogen gas, and the cylinder portion 42 in the cylinder portion 42. The piston rod portion 43 is inserted into the cylinder 42 so that the protruding length can be changed and protrudes from the tip portion of the cylinder portion 42.

そして、ガススプリング41のピストンロッド部43の先端部が、固定枠部４の被連結部７に１つの回動アーム40を介して連結されている。 The distal end portion of the piston rod portion 43 of the gas spring 41 is connected to the connected portion 7 of the fixed frame portion 4 through one rotating arm 40.

すなわち、ピストンロッド部43の略コ字枠状の先端部は、一端部が固定枠部４の被連結部７のストッパ部８側とは反対側の端部に上下方向の軸44を中心として回動可能に連結された回動アーム40の他端部に、上下方向の軸45を中心として回動可能に連結されている。 In other words, the substantially U-shaped frame-shaped tip of the piston rod 43 has one end at the end opposite to the stopper 8 side of the connected portion 7 of the fixed frame 4 around the vertical axis 44. The other end of the pivot arm 40 that is pivotably coupled is pivotally connected about a vertical axis 45.

この回動アーム40は、固定枠部４に対して回動可能でかつガススプリング41に対して回動可能なもので、互いに上下に離間対向した対向板47と、両対向板47の前端縁部同士を連結した連結板48とを有し、この連結板48の前面一部が固定枠部４のストッパ部８と当接する当接面49となっている。 The pivot arm 40 is pivotable with respect to the fixed frame portion 4 and is pivotable with respect to the gas spring 41. A connecting plate 48 that connects the parts, and a part of the front surface of the connecting plate 48 is a contact surface 49 that contacts the stopper portion 8 of the fixed frame portion 4.

そして、この回動アーム40の当接面49は、図２から明らかなように、可動枠部５が前進作業位置に位置した状態および可動枠部５が後退作業位置に位置した状態では自由長に比べてやや縮んだ状態のガススプリング41の弾性復元力（付勢力）に基づいてストッパ部８と当接し、可動枠部５が格納非作業位置に位置した状態ではストッパ部８から離れて位置し、この可動枠部５が格納非作業位置に位置した状態ではガススプリング41は自由長の状態となっている。なお、シリンダ部42の略板状の基端部が、可動枠部５の被連結部20に上下方向の軸50を中心として回動可能に連結（直結）されている。 As is apparent from FIG. 2, the contact surface 49 of the rotating arm 40 has a free length when the movable frame portion 5 is located at the forward operation position and when the movable frame portion 5 is located at the backward operation position. Is in contact with the stopper portion 8 based on the elastic restoring force (biasing force) of the gas spring 41 in a slightly contracted state compared to the above, and the movable frame portion 5 is positioned away from the stopper portion 8 in the state where the movable frame portion 5 is positioned at the non-storage position. The gas spring 41 is in a free length state in a state where the movable frame portion 5 is located at the retracted non-working position. The substantially plate-like base end portion of the cylinder portion 42 is connected (directly connected) to the connected portion 20 of the movable frame portion 5 so as to be rotatable about a vertical axis 50.

次に、上記農作業機１の作用等について説明する。 Next, the operation and the like of the farm work machine 1 will be described.

トラクタの前進走行により土作業手段２で畦塗り作業を行う場合、図１に示すように、土作業手段２を支持する可動枠部５を前進作業位置まで動かして固定し、その土作業手段２を構成する前処理ロータリ30、盛土用のロータリ21および畦塗り体26を所望の前進作業状態に設定し、サイドカバー31をその自重により畦上面に接地させる。 When the earth work means 2 performs the wiping work by the forward traveling of the tractor, as shown in FIG. 1, the movable frame portion 5 that supports the earth work means 2 is moved and fixed to the forward work position, and the earth work means 2 The pre-processing rotary 30, the embankment rotary 21 and the padding 26 are set in a desired forward working state, and the side cover 31 is grounded by its own weight on the top surface of the paddle.

そして、トラクタを前進走行させると、農作業機１が進行方向前方に移動し、トラクタ側からの動力が入力軸および動力伝達手段を経て土作業手段２まで伝達される。 Then, when the tractor is moved forward, the farm work machine 1 moves forward in the traveling direction, and the power from the tractor side is transmitted to the soil work means 2 through the input shaft and the power transmission means.

トラクタ側からの動力が土作業手段２に伝わると、前処理ロータリ30、盛土用のロータリ21および畦塗り体26の各々が所定方向に駆動回転する。すると、畦上面が前処理ロータリ30にて前処理され、畦塗り用の土がロータリ21にて耕耘されて畦に盛り上げられ、この畦に盛り上げられた土が畦塗り体26にて締め固められ、強固な新畦が形成される。 When the power from the tractor side is transmitted to the earth working means 2, each of the pretreatment rotary 30, the embankment rotary 21 and the padding body 26 is driven to rotate in a predetermined direction. Then, the upper surface of the paddle is pretreated by the pretreatment rotary 30, the paddy soil is cultivated by the rotary 21 and raised to the paddle, and the soil raised on the paddle is compacted by the padding body 26. A strong Xinjiang is formed.

そして、圃場の端部では、塗り残しがないよう、土作業手段２を支持した可動枠部５を後退作業位置まで動かして固定してリターン作業を行う。 Then, at the end of the field, the movable frame portion 5 that supports the earth working means 2 is moved to the reverse operation position and fixed so as not to leave unpainted, and the return operation is performed.

このリターン作業をするに際し、作業者は、トラクタの３点リンク部にて農作業機１全体を所定高さまで持上げ、その後、手動操作により可動枠部５を土作業手段２とともに後退作業位置まで移動させる。 When performing this return work, the operator lifts the entire farm work machine 1 to a predetermined height at the three-point link part of the tractor, and then moves the movable frame part 5 together with the earth work means 2 to the retreat work position by manual operation. .

このとき、可動枠部５の前進作業位置から格納非作業位置への移動時においては、ガススプリング41がその弾性復元力により可動枠部５の前進作業位置から格納非作業位置への移動を補助するため、作業者は可動枠部５を比較的小さい力で容易に移動操作でき、可動枠部５の格納非作業位置から後退作業位置への移動時においては、ガススプリング41が可動枠部５の格納非作業位置から後退作業位置への移動速度を減少させるため、可動枠部５が自重で急激に下動するようなことがなく、作業者にとって安全である。 At this time, when the movable frame portion 5 moves from the forward working position to the retracted non-working position, the gas spring 41 assists the movement of the movable frame portion 5 from the forward working position to the retracted non-working position by its elastic restoring force. Therefore, the operator can easily move the movable frame portion 5 with a relatively small force. When the movable frame portion 5 is moved from the retracted non-working position to the retracted working position, the gas spring 41 is moved to the movable frame portion 5. Since the moving speed from the storage non-working position to the reverse working position is reduced, the movable frame portion 5 does not suddenly move down due to its own weight, which is safe for the operator.

なお、リターン作業終了後、可動枠部５を前進作業位置に戻す場合においてもガススプリング41は移動補助の機能および速度減少の機能を発揮する。 Note that the gas spring 41 exhibits a function of assisting movement and a function of reducing speed even when the movable frame portion 5 is returned to the forward work position after the return work.

そして、上記農作業機１によれば、ガススプリング41を自由長の状態で固定枠部４および可動枠部５間に回動アーム40を介して介装できるため、従来とは異なりガススプリング41を圧縮治具等を用いて自由長より縮めた状態にする必要がなく、ガススプリング41の取付けが容易かつ適切にでき、またガススプリング41の取り外しも自由長の状態のまま容易にでき、しかも、ガススプリング41の補助により可動枠部５の格納非作業位置への上動操作を比較的小さい力で容易に行うことができる。 According to the agricultural machine 1, the gas spring 41 can be interposed between the fixed frame portion 4 and the movable frame portion 5 via the rotating arm 40 in a free length state. There is no need to use a compression jig or the like to reduce the length of the gas spring 41, the gas spring 41 can be easily and properly attached, and the gas spring 41 can be easily removed in the free length state. With the assistance of the gas spring 41, the upward movement operation of the movable frame portion 5 to the storage non-working position can be easily performed with a relatively small force.

なお、農作業機１は、ピストンロッド部43の先端部を固定枠部４の被連結部７に回動アーム40を介して連結した構成について説明したが、例えば、図示しないが、シリンダ部42の基端部を固定枠部４の被連結部７に回動アーム40を介して連結するようにしてもよい。 The farm work machine 1 has been described with respect to the configuration in which the tip end portion of the piston rod portion 43 is connected to the connected portion 7 of the fixed frame portion 4 via the rotating arm 40. You may make it connect a base end part to the to-be-connected part 7 of the fixed frame part 4 via the rotation arm 40. FIG.

また、農作業機１は、例えば図５ないし図７に示すように、ガススプリング41のピストンロッド部43の先端部を可動枠部５の第２回動アーム体12の被連結部20にやや長手状の回動体である回動アーム40を介して連結した構成でもよい。 Further, as shown in FIGS. 5 to 7, for example, the agricultural working machine 1 is configured so that the distal end portion of the piston rod portion 43 of the gas spring 41 is slightly longer than the connected portion 20 of the second rotating arm body 12 of the movable frame portion 5. It may be configured to be connected via a rotating arm 40 which is a circular rotating body.

この図５ないし図７に示す農作業機１の回動アーム40は、可動枠部５に対して回動可能でかつガススプリング41に対してこのガススプリング41の長手方向に沿ってスライド可能なものである。 The rotating arm 40 of the agricultural machine 1 shown in FIGS. 5 to 7 can rotate with respect to the movable frame portion 5 and can slide with respect to the gas spring 41 along the longitudinal direction of the gas spring 41. It is.

そして、この回動アーム40は、可動枠部５の第２回動アーム体12の被連結部20に上下方向の軸51を中心として回動可能に連結され、この回動アーム40にピストンロッド部43の先端部が回動アーム40の長手方向に沿ってスライド（移動）可能に連結されている。この回動アーム40には、長孔部52およびガイド部53が回動アーム40の長手方向に沿って形成されている。 The rotating arm 40 is connected to the connected portion 20 of the second rotating arm body 12 of the movable frame portion 5 so as to be rotatable about an axis 51 in the vertical direction. The rotating arm 40 is connected to the piston rod. The distal end portion of the portion 43 is connected to be slidable (movable) along the longitudinal direction of the rotating arm 40. A long hole portion 52 and a guide portion 53 are formed in the rotating arm 40 along the longitudinal direction of the rotating arm 40.

また、図５ないし図７に示す農作業機１のピストンロッド部43は、ロッド部材56と、ロッド部材56の先端に取着され回動アーム40に対してガイド部53に沿ってスライドするスペーサ部材（スライド部材）57と、スペーサ部材57およびロッド部材56の両方に貫通固定された第１ピン58と、スペーサ部材57のみに貫通固定された第２ピン59とを有している。第１ピン58および第２ピン59の各先端部にはＥリング等の止め輪60が固着されている。 Further, the piston rod portion 43 of the agricultural machine 1 shown in FIGS. 5 to 7 includes a rod member 56 and a spacer member that is attached to the tip of the rod member 56 and slides along the guide portion 53 with respect to the rotating arm 40. (Sliding member) 57, a first pin 58 that is fixed to pass through both spacer member 57 and rod member 56, and a second pin 59 that is fixed to pass through only spacer member 57. A retaining ring 60 such as an E-ring is fixed to each tip of the first pin 58 and the second pin 59.

そして、第２ピン59は、図５から明らかなように、可動枠部５が前進作業位置に位置した状態時および可動枠部５が後退作業位置に位置した状態時に、自由長に比べてやや縮んだ状態のガススプリング41の弾性復元力（付勢力）に基づいて回動アーム40の長孔部52の一端部と当接する。一方、第１ピン58は、可動枠部５が格納非作業位置に位置した状態時に回動アーム40の長孔部52の他端部近傍に位置し、この可動枠部５が格納非作業位置に位置した状態ではガススプリング41は自由長の状態となっている。 As is apparent from FIG. 5, the second pin 59 is slightly larger than the free length when the movable frame portion 5 is located at the forward working position and when the movable frame portion 5 is located at the backward working position. Based on the elastic restoring force (biasing force) of the gas spring 41 in the contracted state, the gas spring 41 comes into contact with one end portion of the elongated hole portion 52 of the rotating arm 40. On the other hand, the first pin 58 is located in the vicinity of the other end of the long hole portion 52 of the rotating arm 40 when the movable frame portion 5 is located at the retracted non-working position. The gas spring 41 is in a free length state when it is positioned at the position.

また、シリンダ部42の略板状の基端部が、固定枠部４の被連結部７に上下方向の軸61を中心として回動可能に連結（直結）されている。 Further, the substantially plate-like base end portion of the cylinder portion 42 is connected (directly connected) to the connected portion 7 of the fixed frame portion 4 so as to be rotatable about a vertical axis 61.

そして、このような図５ないし図７に示す農作業機１でも、図１等に示す農作業機１と同様、ガススプリング41を自由長の状態で固定枠部４および可動枠部５間に回動アーム40を介して介装できるため、従来とは異なりガススプリング41を圧縮治具等を用いて自由長より縮めた状態にする必要がなく、ガススプリング41の取付けが容易かつ適切にでき、またガススプリング41の取り外しも自由長の状態のまま容易にでき、しかも、ガススプリング41の補助により可動枠部５の格納非作業位置への上動操作を比較的小さい力で容易に行うことができる。 5 to 7 as in the agricultural machine 1 shown in FIG. 1 and the like, the gas spring 41 is rotated between the fixed frame part 4 and the movable frame part 5 in a free length state. Since it can be installed via the arm 40, unlike the conventional case, it is not necessary to make the gas spring 41 smaller than the free length by using a compression jig, etc., and the gas spring 41 can be easily and properly attached. The gas spring 41 can be easily removed in a free length state, and with the assistance of the gas spring 41, the upward movement of the movable frame portion 5 to the retracted non-working position can be easily performed with a relatively small force. .

なお、この農作業機１は、ピストンロッド部43の先端部を可動枠部５の被連結部20に回動アーム40を介して連結した構成について説明したが、例えば、図示しないが、シリンダ部42の基端部を可動枠部５の被連結部20に回動アーム40を介して連結するようにしてもよい。 In addition, although this agricultural working machine 1 demonstrated the structure which connected the front-end | tip part of the piston rod part 43 to the to-be-connected part 20 of the movable frame part 5 via the rotation arm 40, for example, although not shown in figure, the cylinder part 42 These base end portions may be connected to the connected portion 20 of the movable frame portion 5 via the rotating arm 40.

次に、本発明の農作業機の一実施の形態を図８を参照して説明する。Next, an embodiment of the agricultural machine according to the present invention will be described with reference to FIG.

図８に示す農作業機１は、ガススプリング41を固定枠部４および可動枠部５間に回動アーム40を介して介装する構成ではなく、ガススプリング41を可動枠部５が有する第２回動アーム体（第１回動部材）12および可動フレーム体（第２回動部材）13間に回動アーム（回動体）40を介して介装する構成である。 The agricultural machine 1 shown in FIG. 8 does not have a configuration in which the gas spring 41 is interposed between the fixed frame portion 4 and the movable frame portion 5 via the rotating arm 40, but the gas spring 41 is included in the second movable frame portion 5. The rotating arm body (first rotating member) 12 and the movable frame body (second rotating member) 13 are interposed via a rotating arm (rotating body) 40 .

この図８に示す農作業機１では、被連結部７は、固定枠部４ではなく、第２回動アーム体12の長手方向中間部に形成されている。被連結部20は、第２回動アーム体12ではなく、可動フレーム体13の端部に一体に形成されている。 In the agricultural machine 1 shown in FIG. 8, the coupled portion 7 is formed not at the fixed frame portion 4 but at the intermediate portion in the longitudinal direction of the second rotating arm body 12. The coupled portion 20 is formed integrally with the end portion of the movable frame body 13 instead of the second rotating arm body 12.

そして、ガススプリング41のピストンロッド部43の先端部が、第２回動アーム体12の被連結部７に１つの回動アーム40を介して連結されている。すなわち、ピストンロッド部43の略コ字枠状の先端部は、一端部が被連結部７のストッパ部８側とは反対側の端部に上下方向の軸44を中心として回動可能に連結された回動アーム40の他端部に、上下方向の軸45を中心として回動可能に連結されている。この回動アーム40は、第２回動アーム体12に対して回動可能でかつガススプリング41に対して回動可能なもので、互いに上下に離間対向した対向板47と、両対向板47の前端縁部同士を連結した連結板48とを有し、この連結板48の前面一部が第２回動アーム体12のストッパ部８と当接する当接面49となっている。 The distal end portion of the piston rod portion 43 of the gas spring 41 is connected to the connected portion 7 of the second rotating arm body 12 via one rotating arm 40. In other words, the substantially U-shaped frame-shaped tip portion of the piston rod portion 43 is connected to one end portion of the connected portion 7 opposite to the stopper portion 8 side so as to be rotatable about the vertical axis 44. The other end of the rotating arm 40 is connected to be pivotable about a vertical shaft 45. The turning arm 40 is turnable with respect to the second turning arm body 12 and is turnable with respect to the gas spring 41. And a front part of the connecting plate 48 is a contact surface 49 that comes into contact with the stopper 8 of the second rotating arm body 12.

そして、この回動アーム40の当接面49は、図８から明らかなように、可動枠部５が前進作業位置に位置した状態および可動枠部５が後退作業位置に位置した状態では自由長に比べてやや縮んだ状態のガススプリング41の弾性復元力（付勢力）に基づいてストッパ部８と当接し、可動枠部５が格納非作業位置に位置した状態ではストッパ部８から離れて位置し、この可動枠部５が格納非作業位置に位置した状態ではガススプリング41は自由長の状態となっている。なお、シリンダ部42の略板状の基端部が、土作業手段２を支持する可動フレーム体13の被連結部20に上下方向の軸50を中心として回動可能に連結（直結）されている。 As is apparent from FIG. 8, the contact surface 49 of the rotating arm 40 has a free length when the movable frame portion 5 is located at the forward operation position and when the movable frame portion 5 is located at the backward operation position. Is in contact with the stopper portion 8 based on the elastic restoring force (biasing force) of the gas spring 41 in a slightly contracted state compared to the above, and the movable frame portion 5 is positioned away from the stopper portion 8 in the state where the movable frame portion 5 is positioned at the non-storage position. The gas spring 41 is in a free length state in a state where the movable frame portion 5 is located at the retracted non-working position. The substantially plate-like base end portion of the cylinder portion 42 is connected (directly connected) to the connected portion 20 of the movable frame body 13 that supports the earth working means 2 so as to be rotatable about the vertical axis 50. Yes.

そして、このような図８に示す農作業機１でも、図１等に示す農作業機１と同様、ガススプリング41を自由長の状態で第２回動アーム体12および可動フレーム体13間に回動アーム40を介して介装できるため、従来とは異なりガススプリング41を圧縮治具等を用いて自由長より縮めた状態にする必要がなく、ガススプリング41の取付けが容易かつ適切にでき、またガススプリング41の取り外しも自由長の状態のまま容易にでき、しかも、ガススプリング41の補助により可動枠部５の格納非作業位置への上動操作を比較的小さい力で容易に行うことができる。 In the agricultural machine 1 shown in FIG. 8 as well, as in the agricultural machine 1 shown in FIG. 1 and the like, the gas spring 41 is rotated between the second rotating arm body 12 and the movable frame body 13 in a free length state. Since it can be installed via the arm 40, unlike the conventional case, it is not necessary to make the gas spring 41 smaller than the free length by using a compression jig, etc., and the gas spring 41 can be easily and properly attached. The gas spring 41 can be easily removed in a free length state, and with the assistance of the gas spring 41, the upward movement of the movable frame portion 5 to the retracted non-working position can be easily performed with a relatively small force. .

なお、この農作業機１は、ピストンロッド部43の先端部を第２回動アーム体12の被連結部７に回動アーム40を介して連結した構成について説明したが、例えば、図示しないが、シリンダ部42の基端部を第２回動アーム体12の被連結部７に回動アーム40を介して連結するようにしてもよい。 In addition, although this agricultural working machine 1 demonstrated the structure which connected the front-end | tip part of the piston rod part 43 to the to-be-connected part 7 of the 2nd rotation arm body 12 via the rotation arm 40, for example, although not shown in figure, You may make it connect the base end part of the cylinder part 42 to the to-be-connected part 7 of the 2nd rotation arm body 12 via the rotation arm 40. FIG.

また、農作業機１は、１本のガススプリング41のみを備えた構成には限定されず、例えば図９に示すように、自由長の状態で固定枠部４および可動枠部５間（或いは第１回動部材12および第２回動部材13間）に回動アーム40を介して介装可能で互いに平行に位置する複数本、例えば２本のガススプリング41を備えた構成でもよい。 Further, the farm work machine 1 is not limited to a configuration including only one gas spring 41, and for example, as shown in FIG. 9, between the fixed frame portion 4 and the movable frame portion 5 (or the first frame) in a free length state. A configuration may be provided in which a plurality of, for example, two gas springs 41, which can be interposed between the one rotation member 12 and the second rotation member 13) via the rotation arm 40 and are positioned in parallel to each other, may be used.

さらに、農作業機１は、土作業手段２を左右方向にオフセット可能としたもの等でもよい。 Further, the farm work machine 1 may be one in which the soil working means 2 can be offset in the left-right direction.

また、農作業機１は、手動操作で可動枠部５を移動させる手動切換え式の構成には限定されず、例えば駆動力を出力して可動枠部５を移動させる駆動手段を備える自動切換え式の構成としてもよい。 Further, the farm work machine 1 is not limited to the manual switching type configuration in which the movable frame portion 5 is moved by manual operation. For example, the agricultural working machine 1 is an automatic switching type that includes a driving unit that outputs a driving force to move the movable frame portion 5. It is good also as a structure.

本発明の農作業機の関連技術を示す平面図である。It is a top view which shows the related technique of the agricultural machine of this invention. 同上農作業機の部分平面図である。It is a partial top view of an agricultural working machine same as the above. 同上農作業機のガススプリング部分の平面図である。It is a top view of the gas spring part of an agricultural working machine same as the above. 同上農作業機のガススプリング部分の側面図である。It is a side view of the gas spring part of an agricultural working machine same as the above. 本発明の農作業機の他の関連技術を示す部分平面図である。It is a fragmentary top view which shows the other related technique of the agricultural working machine of this invention. 同上農作業機のガススプリングの連結部分の平面図である。It is a top view of the connection part of the gas spring of an agricultural working machine same as the above. 同上農作業機のガススプリングの連結部分の断面図である。It is sectional drawing of the connection part of the gas spring of an agricultural working machine same as the above. 本発明の農作業機の一実施の形態を示す部分平面図である。It is a fragmentary top view which shows one Embodiment of the agricultural machine of this invention. 本発明の農作業機の他の実施の形態を示す部分側面図である。It is a partial side view which shows other embodiment of the agricultural machine of this invention.

Explanation of symbols

１農作業機
２土作業手段
４固定枠部
５可動枠部
12 第１回動部材である第２回動アーム体
13 第２回動部材である可動フレーム体
40 回動アーム
41 ガススプリング DESCRIPTION OF SYMBOLS 1 Farm machine 2 Soil working means 4 Fixed frame part 5 Movable frame part
12 2nd rotation arm body which is the 1st rotation member
13 Movable frame body as second rotating member
40 Rotating arm
41 Gas spring

Claims

A farm machine that performs soil work with soil work means while moving by traveling of a traveling vehicle,
A fixed frame portion connected to the traveling vehicle;
A forward working position provided on the fixed frame portion, having a first rotating member and a second rotating member, wherein the earth working means performs earth work based on forward running of the traveling vehicle, and the earth working means A reversing work position for carrying out earth work based on reverse running of the traveling vehicle and a movable frame portion for supporting the earth working means, wherein the earth working means is moved to a retracted non-working position located behind the traveling vehicle;
A movement arm is interposed between the first rotation member and the second rotation member via a rotation arm, and the movement of the movable frame portion from the advance work position to the retracted non-work position and the reverse work position of the movable frame portion. And a gas spring that assists in the movement from the storage to the non-working position,
One end portion of the first rotating member is rotatably connected to the fixed frame portion, and the second rotating member is rotatably connected to the other end portion of the first rotating member,
The gas spring is connected to the rotating arm that is rotatably connected to the first rotating member, and the movable frame portion is located at the forward working position and the movable frame portion is located at the backward working position. When the movable frame portion is in the retracted non-working position, the movable frame portion is in a free length state, and the first rotating member and the second rotating member are in the free length state. An agricultural machine characterized in that it can be interposed between the members via the rotating arm.