JP6854007B2

JP6854007B2 - Agricultural work machine

Info

Publication number: JP6854007B2
Application number: JP2017104921A
Authority: JP
Inventors: 瑞樹小山; 泰徳倉田; 小出　盛人; 盛人小出; 壮将山宮
Original assignee: 松山株式会社
Priority date: 2017-05-26
Filing date: 2017-05-26
Publication date: 2021-04-07
Anticipated expiration: 2037-05-26
Also published as: JP2018198563A

Description

本発明は、延長整地体のばたつきを適切に防止できる農作業機に関するものである。 The present invention relates to an agricultural work machine capable of appropriately preventing flapping of an extended leveling body.

従来、例えば下記の特許文献１に記載された農作業機が知られている。 Conventionally, for example, the agricultural work machine described in Patent Document 1 below is known.

この従来の農作業機は、トラクタ等の走行車に連結される中央作業部（中央部分）と、この中央作業部に回動可能に設けられ、一方向への回動により展開作業状態となり、他方向への回動により折畳非作業状態となる左右の延長作業部（作業機部分）とを備えている。 This conventional agricultural work machine is rotatably provided in a central work portion (central portion) connected to a traveling vehicle such as a tractor, and the central work portion is rotated in one direction to be in a deployed work state. It is equipped with left and right extension work parts (working machine parts) that are folded and non-working when rotated in the direction.

そして、中央作業部及び左右両方の延長作業部で作業をする形態と、中央作業部及び左右いずれか一方の延長作業部で作業をする形態と、中央作業部のみで作業をする形態とに切換え可能となっている。 Then, it is switched between a form in which work is performed in the central work section and both the left and right extension work sections, a form in which work is performed in the central work section and one of the left and right extension work sections, and a form in which work is performed only in the central work section. It is possible.

特開平１０−２９５１１１号公報Japanese Unexamined Patent Publication No. 10-295111

しかしながら、上記従来の農作業機では、延長作業部の折畳非作業状態時において、その折畳非作業状態の延長作業部の延長整地体がばたつくおそれがある。 However, in the above-mentioned conventional agricultural work machine, when the extension work part is in the non-folding work state, the extension leveling body of the extension work part in the non-folding work state may flutter.

本発明は、このような点に鑑みなされたもので、延長作業部の延長整地体のばたつきを適切に防止できる農作業機を提供することを目的とする。 The present invention has been made in view of such a point, and an object of the present invention is to provide an agricultural work machine capable of appropriately preventing fluttering of an extension leveling body of an extension work part.

本発明に係る農作業機は、中央作業部と、この中央作業部に回動可能に設けられ、展開作業状態及び折畳非作業状態になる延長作業部とを備え、前記中央作業部は、耕耘作業をする中央耕耘体と、この中央耕耘体の後方で整地作業をする中央整地体と、この中央整地体を付勢する付勢手段とを有し、前記延長作業部は、耕耘作業をする延長耕耘体と、この延長耕耘体の後方で整地作業をする延長整地体と、この延長整地体をロックするロック手段とを有し、前記付勢手段は、前記延長作業部の折畳非作業状態時に、前記ロック手段を受け止めて支持する受け部を有するものである。 The agricultural work machine according to the present invention includes a central work unit and an extension work unit that is rotatably provided in the central work unit and is in an unfolded work state and a non-folding work state. The central work unit is cultivated. It has a central cultivated body for work, a central cultivated body for terraining work behind the central cultivated body, and an urging means for urging the central cultivated body, and the extension work unit performs cultivating work. It has an extended tillage body, an extended ground leveling body for performing ground leveling work behind the extended tillage body, and a locking means for locking the extended ground leveling body, and the urging means is a non-folding work of the extension work portion. It has a receiving portion that receives and supports the locking means in the state.

本発明によれば、延長作業部の延長整地体のばたつきを適切に防止できる。 According to the present invention, it is possible to appropriately prevent the extension ground leveling body of the extension work portion from fluttering.

本発明の一実施の形態に係る農作業機の背面図である。It is a rear view of the agricultural work machine which concerns on one Embodiment of this invention. 同上農作業機の側面図である。It is a side view of the same farm work machine. 同上農作業機の側面図である。It is a side view of the same farm work machine. 同上農作業機の平面図である。It is a plan view of the same farm work machine. 同上農作業機の付勢手段を示す背面図である。It is a rear view which shows the urging means of the agricultural work machine as above. 同上農作業機の部分側面図である。It is a partial side view of the same farm work machine. 同上農作業機の部分側面図（付勢手段の付勢状態時）である。Same as above. It is a partial side view of the agricultural work machine (when the urging means is urged). 同上農作業機の部分側面図（付勢手段の付勢解除状態時）である。Same as above. It is a partial side view of the agricultural work machine (when the urging means is released from urging). 同上農作業機のロック手段を示す平面図である。It is a top view which shows the locking means of the agricultural work machine as above. 同上ロック手段を示す側面図（延長作業部の展開作業状態時）である。The same is a side view showing the locking means (when the extension work part is in the unfolded work state). 同上ロック手段を示す側面図（延長作業部の折畳非作業状態時）である。The same is a side view showing the locking means (when the extension work part is not folded and working).

本発明の一実施の形態について図１ないし図１１を参照して説明する。 An embodiment of the present invention will be described with reference to FIGS. 1 to 11.

図中の１は農作業機で、この農作業機１は、例えば走行車であるトラクタ（図示せず）の後部に連結され、そのトラクタの走行により圃場を前方（進行方向）に移動しながら農作業、例えば耕耘整地作業等を行う代掻機である。 1 in the figure is an agricultural work machine, and this agricultural work machine 1 is connected to, for example, the rear part of a tractor (not shown) which is a traveling vehicle, and the traveling of the tractor moves the field forward (in the direction of travel) while performing agricultural work. For example, it is a scraper for cultivating and leveling work.

農作業機１は、例えば折畳み可能な３分割構造のもので、トラクタの後部に連結される中央作業部２と、この中央作業部２の左右方向端部に回動軸（回動支点）５を中心として上下方向に回動可能に設けられた左右の延長作業部３と、この延長作業部３を中央作業部２に対して回動させる回動駆動手段である電動油圧シリンダ４とを具備している。 The agricultural work machine 1 has, for example, a foldable three-divided structure, and has a central work portion 2 connected to the rear portion of the tractor and a rotation shaft (rotation fulcrum) 5 at the left-right end portion of the central work portion 2. It includes left and right extension work portions 3 that are rotatably provided in the vertical direction as a center, and an electro-hydraulic cylinder 4 that is a rotation driving means for rotating the extension work portion 3 with respect to the central work portion 2. ing.

そして、各延長作業部３は、電動油圧シリンダ４の伸縮動作に基づいて、一方向への回動（約１８０度回動）により展開作業状態となり、他方向への回動（約１８０度回動）により折畳非作業状態となる。なお、左右対をなす延長作業部３は、左右対称の点が異なるのみで、基本的構成は同一である。 Then, each extension work unit 3 is brought into the unfolding work state by rotating in one direction (rotating about 180 degrees) based on the expansion / contraction operation of the electrohydraulic cylinder 4, and is rotated in the other direction (about 180 degrees). Due to the movement), it becomes a folding non-working state. It should be noted that the extension work portions 3 forming a left-right pair have the same basic configuration except for the point of left-right symmetry.

中央作業部２は、トラクタの後部の３点リンク部に脱着可能に連結される機体である中央機体11と、この中央機体11に回転可能に設けられ耕耘作業をする耕耘体である中央耕耘体12と、中央機体11の中央耕耘カバー（耕耘カバー）15の後端部に上下方向に回動可能に設けられ中央耕耘体12の後方で整地作業する整地体である中央整地体13とを備えている。 The central work unit 2 is a central airframe 11 that is detachably connected to a three-point link portion at the rear of the tractor, and a central tillage body that is rotatably provided on the central airframe 11 and performs tillage work. 12 and a central land preparation body 13 which is provided at the rear end of the central tillage cover (cultivation cover) 15 of the central machine body 11 so as to be rotatable in the vertical direction and is a ground preparation body for ground preparation work behind the central tillage body 12. ing.

中央機体11は、入力軸16を保持したミッションケース17を有し、その入力軸16にはトラクタのＰＴＯ軸がジョイントを介して接続される。また、中央機体11は、マスト18を有し、このマスト18には制御手段である制御ボックス20が設けられている。 The central body 11 has a mission case 17 holding an input shaft 16, and a PTO shaft of a tractor is connected to the input shaft 16 via a joint. Further, the central body 11 has a mast 18, and the mast 18 is provided with a control box 20 which is a control means.

中央耕耘体12は、左右方向の耕耘軸21を有し、この耕耘軸21には複数の耕耘爪22が取り付けられている。中央耕耘体12の上方は、中央機体11のカバー部である中央耕耘カバー15によって覆われている。 The central tillage body 12 has a tillage shaft 21 in the left-right direction, and a plurality of tillage claws 22 are attached to the tillage shaft 21. The upper part of the central tillage body 12 is covered by the central tillage cover 15 which is a cover portion of the central body 11.

中央整地体13は、中央耕耘カバー15の後端部に左右方向の回動軸28を中心として上下方向に回動可能に取り付けられた第１整地板（均平板）26を有し、この第１整地板26の下端部には第２整地板（レーキ）27が左右方向の回動軸29を中心として上下方向に回動可能に取り付けられている。 The central ground leveling body 13 has a first ground leveling plate (leveling flat plate) 26 rotatably attached in the vertical direction about a rotation shaft 28 in the horizontal direction at the rear end of the central tillage cover 15. A second ground leveling plate (rake) 27 is attached to the lower end of the ground leveling plate 26 so as to be rotatable in the vertical direction around a rotation shaft 29 in the left-right direction.

延長作業部３は、中央機体11の左右方向端部に回動軸５を中心として上下方向に回動可能に設けられた機体である延長機体31と、この延長機体31に回転可能に設けられ耕耘作業をする耕耘体である延長耕耘体32と、延長機体31の延長耕耘カバー（耕耘カバー）35の後端部に上下方向に回動可能に設けられ延長耕耘体32の後方で整地作業する整地体である延長整地体33とを備えている。 The extension work unit 3 is rotatably provided on the extension machine 31 which is a machine rotatably provided in the vertical direction around the rotation shaft 5 at the left-right end of the central body 11 and the extension machine 31. The extended tiller 32, which is a tiller for tilling work, and the extended tiller cover (tiller cover) 35 of the extension machine 31 are rotatably provided at the rear end of the extended tiller 32, and the ground is leveled behind the extended tiller 32. It is equipped with an extension leveling body 33, which is a leveling body.

延長耕耘体32は、中央耕耘体12の耕耘軸21にクラッチ36を介して連結される耕耘軸37を有し、この耕耘軸37には複数の耕耘爪38が取り付けられている。延長耕耘体32の上方は、延長機体31のカバー部である延長耕耘カバー35によって覆われている。 The extension tiller 32 has a tiller shaft 37 connected to the tiller shaft 21 of the central tiller 12 via a clutch 36, and a plurality of tiller claws 38 are attached to the tiller shaft 37. The upper part of the extended tillage body 32 is covered by the extended tillage cover 35, which is the cover portion of the extension machine 31.

延長整地体33は、延長耕耘カバー35の後端部に左右方向の回動軸39を中心として上下方向に回動可能に取り付けられた第１整地板（均平板）41を有し、この第１整地板41の下端部には第２整地板（レーキ）42が左右方向の回動軸40を介して上下方向に回動可能に取り付けられている。 The extended ground leveling body 33 has a first ground leveling plate (flat plate) 41 rotatably attached in the vertical direction around a horizontal rotation shaft 39 at the rear end of the extended tillage cover 35. A second ground leveling plate (rake) 42 is attached to the lower end of the ground leveling plate 41 so as to be rotatable in the vertical direction via a rotating shaft 40 in the horizontal direction.

また、第２整地板42の外端部には、延長整地板（延長レーキ）43が回動可能に取り付けられている。そして、延長整地板43を第２整地板42に対して回動させる延長整地板駆動手段45が延長耕耘カバー35の上面側に設けられており、この延長整地板駆動手段45は、電動モータ（図示せず）を有している。 Further, an extension leveling plate (extension rake) 43 is rotatably attached to the outer end portion of the second ground leveling plate 42. An extension ground plate driving means 45 for rotating the extension ground plate 43 with respect to the second ground plate 42 is provided on the upper surface side of the extension tillage cover 35, and the extension ground plate driving means 45 is an electric motor ( (Not shown).

また一方、中央作業部２は、中央整地体13が所望の接地圧をもって圃場面に接地するように、圃場面側に向けて中央整地体13を付勢する付勢手段51を左右両側に有している。つまり、中央作業部２は、左右方向両端側の位置（回動軸５からやや離れた位置）に付勢手段51を有している。 On the other hand, the central work unit 2 has urging means 51 on both the left and right sides for urging the central leveling body 13 toward the field scene so that the central leveling body 13 touches the field scene with a desired ground pressure. doing. That is, the central working unit 2 has the urging means 51 at positions on both ends in the left-right direction (positions slightly separated from the rotation shaft 5).

そして、付勢手段51は、例えば図５に示すもので、作業者の手作業による付替ピン74の付け替えによって、中央整地体13を付勢する付勢状態（加圧状態）と、中央整地体13を付勢しない付勢解除状態（フリー状態）とに手動で切換え可能となっている（図６ないし図８を参照）。 The urging means 51 is shown in FIG. 5, for example, in an urging state (pressurized state) in which the central leveling body 13 is urged by manually replacing the replacement pin 74 by an operator, and a central leveling state. It is possible to manually switch the body 13 to the de-energized state (free state) in which the body 13 is not urged (see FIGS. 6 to 8).

ここで、図５ないし図８等に示すように、付勢手段51は、中央機体11の中央耕耘カバー15の筒状部15aに取付ボルト52及び溶接ナット53で固着されたコ字状の枠部材である外側コ字枠55を有し、この外側コ字枠55には、第１孔部（第１取付部）56、第２孔部（第２取付部）57、第３孔部58及び第４孔部59が形成されている。そして、外側コ字枠55内には、同じくコ字状をなす内側コ字枠60が配設されており、この内側コ字枠60には、第１長孔部61及びこれよりも長い第２長孔部62が形成されている。なお、第２長孔部62は、内側コ字枠60の上端近傍から下端近傍にわたって形成されている。 Here, as shown in FIGS. 5 to 8 and the like, the urging means 51 is a U-shaped frame fixed to the tubular portion 15a of the central tillage cover 15 of the central machine body 11 with mounting bolts 52 and welding nuts 53. It has an outer U-shaped frame 55 which is a member, and the outer U-shaped frame 55 has a first hole portion (first mounting portion) 56, a second hole portion (second mounting portion) 57, and a third hole portion 58. And the fourth hole 59 is formed. An inner U-shaped frame 60 having a U-shape is also arranged in the outer U-shaped frame 55, and the inner U-shaped frame 60 has a first elongated hole portion 61 and a length longer than the first elongated hole portion 61. Two elongated holes 62 are formed. The second elongated hole portion 62 is formed from the vicinity of the upper end to the vicinity of the lower end of the inner U-shaped frame 60.

また、付勢手段51は、伸縮可能な付勢部材であるガススプリング65を有し、このガススプリング65は、高圧ガスが封入された本体部66と、この本体部66に対して出入りするロッド部67とによって構成されている。本体部66の下端部は、第１整地板26の突出板部68に回動可能に取り付けられている。ロッド部67の上端部は、内側コ字枠60の第１長孔部61に挿通された挿通ピン69に回動可能に取り付けられている。 Further, the urging means 51 has a gas spring 65 which is a stretchable urging member, and the gas spring 65 has a main body 66 filled with high-pressure gas and a rod that goes in and out of the main body 66. It is composed of parts 67. The lower end portion of the main body portion 66 is rotatably attached to the protruding plate portion 68 of the first ground leveling plate 26. The upper end portion of the rod portion 67 is rotatably attached to an insertion pin 69 inserted through the first elongated hole portion 61 of the inner U-shaped frame 60.

また、付勢手段51は、外側コ字枠55の先端部である上端部に取付具（ボルト70a、ナット70b及びワッシャ70c）70によって脱着可能に取り付けられた弾性変形可能な円筒状の受け部材（例えばゴム製の筒状部材）71を有している。つまり、外側コ字枠55の第４孔部59に挿通したボルト70aの外周には受け部材71が嵌着されており、この受け部材71は、外側コ字枠55の先端部間に挟持された状態で位置している。 Further, the urging means 51 is an elastically deformable cylindrical receiving member that is detachably attached to the upper end portion of the outer U-shaped frame 55 by a mounting tool (bolt 70a, nut 70b and washer 70c) 70. It has (for example, a rubber tubular member) 71. That is, a receiving member 71 is fitted on the outer circumference of the bolt 70a inserted into the fourth hole portion 59 of the outer U-shaped frame 55, and the receiving member 71 is sandwiched between the tip portions of the outer U-shaped frame 55. It is located in a state of being.

なお、付勢手段51の受け部材71によって、延長作業部３の折畳非作業状態時にその延長作業部３のロック手段（整地体垂下り防止手段）81の当接部100を受け止めて支持する受け部（支持部）72が構成されている。 The receiving member 71 of the urging means 51 receives and supports the contact portion 100 of the locking means (ground leveling body sagging prevention means) 81 of the extension work portion 3 when the extension work portion 3 is not folded. A receiving portion (support portion) 72 is configured.

さらに、付勢手段51は、外側コ字枠55に対して所定位置に位置決め固定された固定部材である固定ピン73と、外側コ字枠55に対して付替可能に取り付けられた付替部材である付替ピン74とを有している。 Further, the urging means 51 includes a fixing pin 73 which is a fixing member positioned and fixed at a predetermined position with respect to the outer U-shaped frame 55 and a replacement member which is replaceably attached to the outer U-shaped frame 55. It has a replacement pin 74 which is.

固定ピン73は、外側コ字枠55の第３孔部58及び内側コ字枠60の第２長孔部62に挿通されており、この固定ピン73の外周には筒状のスペーサ75が嵌着されている。一方、付替ピン74は、付勢手段51の付勢状態時には第１孔部56及び第２長孔部62に挿通され、かつ、付勢手段51の付勢解除状態時には第２孔部57に挿通される。 The fixing pin 73 is inserted through the third hole 58 of the outer U-shaped frame 55 and the second elongated hole 62 of the inner U-shaped frame 60, and a tubular spacer 75 is fitted on the outer circumference of the fixing pin 73. It is worn. On the other hand, the replacement pin 74 is inserted into the first hole 56 and the second elongated hole 62 when the urging means 51 is urged, and the second hole 57 is inserted into the second long hole 62 when the urging means 51 is released. Is inserted into.

すなわち、図７に示すように、付勢手段51の付勢状態時には、付替ピン74が内側コ字枠60の第２長孔部62の下端位置に挿通された状態で外側コ字枠55の第１孔部56に取り付けられているため、内側コ字枠60は外側コ字枠55に対して固定され、その結果、中央整地体13は、ガススプリング65の付勢力を受けて下方側へ付勢された状態（加圧状態）で整地作業をする。なお、延長作業部３の展開作業状態時には、延長整地体33は中央整地体13に連結されて一体となるため、この延長整地体33も同様に加圧状態で整地作業をする。 That is, as shown in FIG. 7, when the urging means 51 is urged, the outer U-shaped frame 55 is inserted through the replacement pin 74 at the lower end position of the second elongated hole portion 62 of the inner U-shaped frame 60. Since it is attached to the first hole 56 of the above, the inner U-frame 60 is fixed to the outer U-frame 55, and as a result, the central leveling body 13 receives the urging force of the gas spring 65 and is on the lower side. Perform ground leveling work in a state of being urged (pressurized state). When the extension work unit 3 is in the unfolding work state, the extension leveling body 33 is connected to the central leveling body 13 and becomes one, so that the extension leveling body 33 is also subjected to the ground leveling work in the same pressure state.

また、図８に示すように、付勢手段51の付勢解除状態時には、付替ピン74が第２長孔部62に挿通されずに外側コ字枠55の第２孔部57に取り付けられているため、内側コ字枠60は、中央整地体13の中央機体11に対する回動に応じて外側コ字枠55に対して上下動し、その結果、中央整地体13（延長整地体33も同様）は、ガススプリング65の付勢力を受けることなく、フリー状態で整地作業をする。 Further, as shown in FIG. 8, when the urging means 51 is in the urging release state, the replacement pin 74 is attached to the second hole portion 57 of the outer U-shaped frame 55 without being inserted into the second elongated hole portion 62. Therefore, the inner U-shaped frame 60 moves up and down with respect to the outer U-shaped frame 55 in response to the rotation of the central leveling body 13 with respect to the central body 11, and as a result, the central leveling body 13 (the extended ground leveling body 33 also). (Same as above) does the ground leveling work in a free state without receiving the urging force of the gas spring 65.

このように、付勢手段51は、外側コ字枠55に対する付替ピン74の付け替えのみで付勢状態及び付勢解除状態に選択的に切換え可能であり、例えば圃場の土が細かくなりにくい場合等に、作業者は付替ピン74を第１孔部56に取り付けて付勢状態に設定する。 In this way, the urging means 51 can be selectively switched between the urging state and the urging release state only by replacing the replacement pin 74 with respect to the outer U-shaped frame 55. For example, when the soil in the field is difficult to be finely divided. For example, the operator attaches the replacement pin 74 to the first hole 56 and sets it in the urging state.

また一方、延長作業部３は、折畳非作業状態時に延長機体31に対して延長整地体33をロックするロック手段81を有している。つまり、延長作業部３は、展開作業状態時には延長整地体33の延長機体31に対する上下回動を許容するが、折畳非作業状態時には延長整地体33の延長機体31に対する上下回動を規制してその延長整地体33の垂下りを防止する回動規制手段であるロック手段81を中央作業部２側の内端側の位置（回動軸５からやや離れた位置）に有している。 On the other hand, the extension work unit 3 has a locking means 81 that locks the extension leveling body 33 with respect to the extension machine 31 in the non-folding work state. That is, the extension work unit 3 allows the extension leveling body 33 to rotate up and down with respect to the extension machine 31 in the unfolding work state, but regulates the up and down rotation of the extension leveling body 33 with respect to the extension machine 31 in the non-folding work state. The locking means 81, which is a rotation regulating means for preventing the extension ground leveling body 33 from hanging down, is provided at a position on the inner end side of the central working portion 2 side (a position slightly away from the rotating shaft 5).

そして、ロック手段81は、例えば図９に示すもので、回動軸５を中心とする中央作業部２に対する回動による延長作業部３の状態切換えに基づいて、延長整地体33をロックするロック状態（回動規制状態）と、延長整地体33をロックしないロック解除状態（回動許容状態）とに自動的に切り換わる構成となっている。 The locking means 81, for example, is shown in FIG. 9, and is a lock that locks the extension leveling body 33 based on the state switching of the extension work portion 3 by rotation with respect to the central work portion 2 centered on the rotation shaft 5. It is configured to automatically switch between a state (rotation restricted state) and an unlocked state (rotation allowed state) in which the extended ground leveling body 33 is not locked.

ここで、図９ないし図１１等に示すように、ロック手段81は、延長機体31の延長耕耘カバー35の筒状部35aに固着されたコ字状の固定コ字枠85を有し、この固定コ字枠85には、ピン用孔部86、長棒部用孔部87及び短棒部用孔部88が形成されている。 Here, as shown in FIGS. 9 to 11 and the like, the locking means 81 has a U-shaped fixed U-shaped frame 85 fixed to the tubular portion 35a of the extended tillage cover 35 of the extension machine 31. The fixed U-shaped frame 85 is formed with a pin hole 86, a long bar hole 87, and a short bar hole 88.

また、ロック手段81は、連結ピン90を介して互いに回動可能に連結された長手状の２本の連結部材（連結アーム）、すなわち例えばそれぞれ断面コ字状をなす第１コ字枠91及び第２コ字枠92を有している。第１コ字枠91の上端部は、固定コ字枠85のピン用孔部86に挿通された挿通ピン93に回動可能に取り付けられている。第２コ字枠92の下端部は、第２整地板42の突出板部94に回動可能に取り付けられている。 Further, the locking means 81 includes two longitudinal connecting members (connecting arms) rotatably connected to each other via a connecting pin 90, that is, a first U-shaped frame 91 having a U-shaped cross section, for example. It has a second U-shaped frame 92. The upper end portion of the first U-shaped frame 91 is rotatably attached to the insertion pin 93 inserted through the pin hole portion 86 of the fixed U-shaped frame 85. The lower end portion of the second U-shaped frame 92 is rotatably attached to the protruding plate portion 94 of the second ground leveling plate 42.

また、規制コ字枠である第１コ字枠91には、固定コ字枠85の短棒部用孔部88と対向して一致する短棒部用孔部95が形成されている。この枠部材である第１コ字枠91の上面側には、取付具（ボルト96a、ナット96b及びワッシャ96c）96によって当接部材である当て板97が脱着可能に取り付けられている。この当て板97と第１コ字枠91の上板部91aとの間には、板状のスペーサ98が配設されている。 Further, the first U-shaped frame 91, which is a regulated U-shaped frame, is formed with a short bar portion hole portion 95 facing and matching the short bar portion hole portion 88 of the fixed U-shaped frame 85. A backing plate 97, which is a contact member, is detachably attached to the upper surface side of the first U-shaped frame 91, which is a frame member, by a mounting tool (bolt 96a, nut 96b, and washer 96c) 96. A plate-shaped spacer 98 is arranged between the backing plate 97 and the upper plate portion 91a of the first U-shaped frame 91.

そして、当て板97は、延長作業部３の折畳非作業状態時に付勢手段51の受け部72に当接する当接部100を上端側に有している。つまり、当て板97の一部がコ字状の当接部100となっており、このコ字状の当接部100は、左右の側板部分100aと、この側板部分100aの上端部同士を連結する連結板部分100bとにて構成されている。なお、第１コ字枠91、当て板97及びスペーサ98等にて、延長機体31に対して回動する回動部材（回動アーム）99が構成されている。 The backing plate 97 has a contact portion 100 on the upper end side that comes into contact with the receiving portion 72 of the urging means 51 when the extension work portion 3 is not folded. That is, a part of the backing plate 97 is a U-shaped contact portion 100, and this U-shaped contact portion 100 connects the left and right side plate portions 100a and the upper end portions of the side plate portions 100a. It is composed of a connecting plate portion 100b. The first U-shaped frame 91, the backing plate 97, the spacer 98, and the like constitute a rotating member (rotating arm) 99 that rotates with respect to the extension machine 31.

さらに、ロック手段81は、長棒部102及び短棒部103を有する略Ｊ字状のロック部材であるスライドバー（ストッパ）101を有し、このスライドバー101はロック位置及びロック解除位置にスライド移動可能である。つまり、スライドバー101の長棒部102が固定コ字枠85の長棒部用孔部87にスライド可能に挿通され、この長棒部102の外周にはスライドバー101を中央作業部２側（ロック位置）に向けて付勢するコイル状のバネ105が配設されている。他方、スライドバー101の短棒部103は、両短棒部用孔部88，95に対して挿入出可能となっている。 Further, the locking means 81 has a slide bar (stopper) 101 which is a substantially J-shaped locking member having a long bar portion 102 and a short bar portion 103, and the slide bar 101 slides to a lock position and an unlock position. It is movable. That is, the long bar portion 102 of the slide bar 101 is slidably inserted into the long bar portion hole 87 of the fixed U-shaped frame 85, and the slide bar 101 is placed on the outer periphery of the long bar portion 102 on the central working portion 2 side ( A coiled spring 105 that biases toward the lock position) is arranged. On the other hand, the short rod portion 103 of the slide bar 101 can be inserted and removed from the holes 88 and 95 for both short rod portions.

そして、図９及び図１０に示すように、延長作業部３の展開作業状態時には、スライドバー101は、中央機体11の側板部106に当接してロック解除位置に位置し、その短棒部103が両短棒部用孔部88，95から挿出されているため、ロック手段81はロック解除状態であり、その結果、延長整地体33は、延長機体31に対して適宜上下回動しながら整地作業をする。 Then, as shown in FIGS. 9 and 10, when the extension work portion 3 is in the unfolding work state, the slide bar 101 is in contact with the side plate portion 106 of the central body 11 and is located at the unlocked position, and the short bar portion 103 thereof. Is inserted from the holes 88 and 95 for both short rods, so that the locking means 81 is in the unlocked state, and as a result, the extension leveling body 33 rotates up and down as appropriate with respect to the extension machine 31. Perform ground leveling work.

しかし、例えば作業終了後、延長作業部３を折畳非作業状態にするために中央作業部２に対して回動させると、スライドバー101は、側板部106から離れてバネ105の付勢力でロック位置までスライドし、その短棒部103が両短棒部用孔部88，95に挿入され、ロック手段81がロック状態となる。 However, for example, when the extension work portion 3 is rotated with respect to the central work portion 2 in order to put the extension work portion 3 into a non-folding work state after the work is completed, the slide bar 101 is separated from the side plate portion 106 by the urging force of the spring 105. It slides to the lock position, the short rod portion 103 is inserted into the holes for both short rod portions 88 and 95, and the locking means 81 is locked.

その結果、延長整地体33は、延長機体31に対して上下回動できない状態となる。つまり、図１１に示すように、第１整地板41及び第２整地板42は、延長機体31に対してロックされて回動不能な状態となる。また、このとき、中央作業部２の付勢手段51の受け部72が、延長作業部３のロック手段81の当接部100を受け止めて支持して、延長作業部３が所定の折畳非作業状態に維持される。 As a result, the extension leveling body 33 cannot rotate up and down with respect to the extension machine 31. That is, as shown in FIG. 11, the first ground preparation plate 41 and the second ground preparation plate 42 are locked with respect to the extension machine 31 and are in a non-rotatable state. Further, at this time, the receiving portion 72 of the urging means 51 of the central working portion 2 receives and supports the abutting portion 100 of the locking means 81 of the extending working portion 3, and the extending working portion 3 is not folded. Maintained in working condition.

次に、農作業機１の作用等を説明する。 Next, the operation and the like of the agricultural work machine 1 will be described.

トラクタの後部に農作業機１を連結して、電動油圧シリンダ４の動力で延長作業部３を展開作業状態になるまで回動させ、かつ、延長整地板駆動手段45の電動モータの動力で延長整地板43を展開作業状態になるまで回動させた後、トラクタの走行により農作業機１を前方向に移動させる。 The agricultural work machine 1 is connected to the rear part of the tractor, the extension work unit 3 is rotated by the power of the electrohydraulic cylinder 4 until it is in the unfolding work state, and the extension work unit 3 is extended by the power of the electric motor of the extension ground plate drive means 45. After rotating the main plate 43 until it is in the unfolding work state, the agricultural work machine 1 is moved forward by the traveling of the tractor.

すると、中央作業部２の中央耕耘体12が耕耘作業をし、その後方で中央作業部２の中央整地体13が整地作業をし、かつ、延長作業部３の延長耕耘体32が耕耘作業をし、その後方で延長作業部３の延長整地体33が整地作業をする。 Then, the central tiller body 12 of the central work unit 2 performs the tillage work, the central ground leveling body 13 of the central work unit 2 performs the ground leveling work behind it, and the extension tiller body 32 of the extension work unit 3 performs the tillage work. Then, behind that, the extension leveling body 33 of the extension work unit 3 performs the leveling work.

そして、例えば作業終了後、延長作業部３を折畳非作業状態になるまで約１８０度回動させると、ロック手段81がロック状態となって延長整地体33が延長機体31に対してロックされるとともに、そのロック手段81の回動部材99の当て板97の当接部100が付勢手段51の受け部72に当接して支持される。 Then, for example, when the extension work portion 3 is rotated about 180 degrees until it is in the folded non-working state after the work is completed, the locking means 81 is locked and the extension leveling body 33 is locked with respect to the extension machine 31. At the same time, the contact portion 100 of the backing plate 97 of the rotating member 99 of the locking means 81 abuts and is supported by the receiving portion 72 of the urging means 51.

それゆえ、例えば農作業機１の運搬の際等において、延長整地体33の第２整地板（レーキ）42は垂れ下がった状態にはならず、延長整地体33がばたつくようなことはない。 Therefore, for example, when the agricultural work machine 1 is transported, the second leveling plate (rake) 42 of the extended leveling body 33 does not hang down, and the extended leveling body 33 does not flutter.

そして、上記農作業機１によれば、延長作業部３がロック手段81を有し、かつ、延長作業部３の折畳非作業状態時に中央作業部２の付勢手段51がそのロック手段81の当接部100を受け止めて支持する受け部72を有するため、折畳非作業状態となった延長作業部２の延長整地体33のばたつきを適切に防止でき、よって、例えば騒音防止や、部品破損の防止等を図ることができる。 Then, according to the agricultural work machine 1, the extension work unit 3 has the lock means 81, and the urging means 51 of the central work unit 2 is the lock means 81 when the extension work unit 3 is in the non-folding work state. Since it has a receiving portion 72 that receives and supports the abutting portion 100, it is possible to appropriately prevent the extension ground leveling body 33 of the extension work portion 2 that is in the folded non-working state from fluttering. Can be prevented.

また、付勢手段51が受け部72を有しかつロック手段81が当接部100を有するため、専用部品（受け専用の部品や、当接専用の部品）を中央作業部２や延長作業部３に取り付ける必要がなく、機体11，31への取付作業の容易化を図ることができ、しかも意匠性の向上も図れる。 Further, since the urging means 51 has the receiving portion 72 and the locking means 81 has the abutting portion 100, the dedicated parts (parts dedicated to receiving and parts dedicated to abutting) are placed in the central work portion 2 and the extension work portion. It is not necessary to attach it to No. 3, and the attachment work to the aircraft 11 and 31 can be facilitated, and the design can be improved.

なお、上記実施の形態では、ロック手段81の回動部材99の第１コ字枠91に取り付けた当て板97が付勢手段51の受け部72に当接する構成、換言すると、回動部材99の第１コ字枠91が当て板97を介して受け部72に当接する構成について説明したが、例えば当て板97を用いずに、第１コ字枠の上板部における当接部が付勢手段の受け部に直接当接する構成等でもよい。 In the above embodiment, the backing plate 97 attached to the first U-shaped frame 91 of the rotating member 99 of the locking means 81 abuts on the receiving portion 72 of the urging means 51, in other words, the rotating member 99. Although the configuration in which the first U-shaped frame 91 of No. 1 abuts on the receiving portion 72 via the backing plate 97 has been described, for example, the contacting portion on the upper plate portion of the first U-shaped frame is attached without using the backing plate 97. It may be configured to directly contact the receiving portion of the force means.

また、付勢手段51の受け部72は、円筒状の受け部材71からなるものには限定されず、例えば外側コ字枠等の枠部材に設けられた板状の受け部材からなるもの等でもよい。 Further, the receiving portion 72 of the urging means 51 is not limited to the one made of the cylindrical receiving member 71, and may be made of, for example, a plate-shaped receiving member provided on the frame member such as the outer U-shaped frame. Good.

さらに、例えば受け部材が枠部材に位置調整可能に取り付けられた構成や、当て板97等の当接部材が枠部材に位置調整可能に取り付けられた構成等でもよい。 Further, for example, the receiving member may be attached to the frame member so that the position can be adjusted, or the contact member such as the backing plate 97 may be attached to the frame member so that the position can be adjusted.

また、例えばロック手段81が延長作業部３の延長機体31の左右方向中央側の位置に設けられた構成でもよい。 Further, for example, the locking means 81 may be provided at a position on the center side in the left-right direction of the extension machine 31 of the extension work unit 3.

さらに、例えば電動油圧シリンダ４を有さず、作業者が手動で延長作業部３を展開作業状態及び折畳非作業状態に切り換える構成でもよい。 Further, for example, the extension work unit 3 may be manually switched between the unfolded work state and the non-folding work state without having the electro-hydraulic cylinder 4.

１農作業機
２中央作業部
３延長作業部
12 中央耕耘体
13 中央整地体
32 延長耕耘体
33 延長整地体
51 付勢手段
55 枠部材である外側コ字枠
56 第１取付部である第１孔部
57 第２取付部である第２孔部
71 受け部材
72 受け部
74 付替部材である付替ピン
81 ロック手段
99 回動部材
100 当接部
101 ロック部材であるスライドバー 1 Agricultural work machine 2 Central work part 3 Extension work part
12 Central tillage body
13 Central leveling body
32 Extended tillage body
33 Extended ground leveling
51 Encouragement means
55 Outer U-shaped frame that is a frame member
56 First hole, which is the first mounting part
57 Second hole, which is the second mounting part
71 Receiving member
72 receiving part
74 Replacement pin that is a replacement member
81 Locking means
99 Rotating member
100 contact part
101 Slide bar that is a lock member

Claims

中央作業部と、
この中央作業部に回動可能に設けられ、展開作業状態及び折畳非作業状態になる延長作業部とを備え、
前記中央作業部は、
耕耘作業をする中央耕耘体と、
この中央耕耘体の後方で整地作業をする中央整地体と、
この中央整地体を付勢する付勢手段とを有し、
前記延長作業部は、
耕耘作業をする延長耕耘体と、
この延長耕耘体の後方で整地作業をする延長整地体と、
この延長整地体をロックするロック手段とを有し、
前記付勢手段は、前記延長作業部の折畳非作業状態時に、前記ロック手段を受け止めて支持する受け部を有する
ことを特徴とする農作業機。 Central work department and
This central work unit is rotatably provided and is provided with an extension work unit that is in an unfolded work state and a non-folding work state.
The central working part is
Central tillage body for tilling work and
A central leveling body that performs ground leveling work behind this central tillage body,
It has an urging means to urge this central leveling body,
The extension work part
An extended tillage body for tilling work and
An extended ground leveling body that performs ground leveling work behind this extended tillage body,
It has a locking means to lock this extended leveling body,
The urging means is an agricultural work machine having a receiving portion that receives and supports the locking means when the extension working portion is not folded.

前記付勢手段は、前記中央整地体を付勢する付勢状態と、前記中央整地体を付勢しない付勢解除状態とに切換え可能となっている
ことを特徴とする請求項１記載の農作業機。 Said biasing means farming according to claim 1, wherein the energized for biasing the central ground leveling body, that it is possible to switch the said central ground leveling member in a biasing city biased release state Machine.

前記付勢手段は、
第１取付部及び第２取付部を有する枠部材と、
前記付勢手段の付勢状態時には前記第１取付部に取り付けられ、前記付勢手段の付勢解除状態時には前記第２取付部に取り付けられる付替部材とを有し、
前記付勢手段の前記受け部は、前記枠部材に取り付けられた受け部材によって構成されている
ことを特徴とする請求項２記載の農作業機。 The urging means
A frame member having a first mounting portion and a second mounting portion,
It has a replacement member that is attached to the first mounting portion when the urging means is urged and is attached to the second mounting portion when the urging means is released from urging.
The agricultural work machine according to claim 2, wherein the receiving portion of the urging means is composed of a receiving member attached to the frame member.

前記受け部材は、コ字状の前記枠部材の先端側に取り付けられている
ことを特徴とする請求項３記載の農作業機。 The receiving member, agricultural machine according to claim 3, wherein the is attached to the distal end side of the U-shaped the frame member.

前記ロック手段は、
ロック位置及びロック解除位置に移動可能なロック部材と、
このロック部材がロック解除位置に位置した状態では延長機体に対して回動可能であり、前記ロック部材がロック位置に位置した状態では前記延長機体に対して回動不能である回動部材とを有し、
前記回動部材は、前記延長作業部の折畳非作業状態時に、前記付勢手段の前記受け部に当接する当接部を有する
ことを特徴とする請求項１ないし４のいずれか一記載の農作業機。 The locking means
A lock member that can be moved to the lock position and unlock position,
When the lock member is located at the unlocked position, the rotating member can rotate with respect to the extension machine, and when the lock member is located at the lock position, the rotating member cannot rotate with respect to the extension machine. Have and
The rotary member is at folded inoperative state of the extension working portion, of the receiving portion in any one according of claims 1, characterized in that it has a abutment portion abutting 4 of the biasing means Agricultural work machine.