JP6161963B2 - Agricultural machine - Google Patents

Agricultural machine Download PDF

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JP6161963B2
JP6161963B2 JP2013120618A JP2013120618A JP6161963B2 JP 6161963 B2 JP6161963 B2 JP 6161963B2 JP 2013120618 A JP2013120618 A JP 2013120618A JP 2013120618 A JP2013120618 A JP 2013120618A JP 6161963 B2 JP6161963 B2 JP 6161963B2
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claw
nail
bolt
rotating shaft
rotation
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JP2014236692A (en
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貴之 戸谷
貴之 戸谷
星原 宏文
宏文 星原
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松山株式会社
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本発明は、爪体が回転軸体の回転の妨げになることを防ぐことができる農作業機に関するものである。   The present invention relates to an agricultural machine that can prevent a claw body from obstructing rotation of a rotating shaft body.

従来から、例えば機体と、この機体に回転可能に設けられた回転軸体と、この回転軸体に可動可能に取り付けられた爪体とを備えたフレールモア等の農作業機が知られている(例えば特許文献1等)。   2. Description of the Related Art Conventionally, agricultural machines such as flail mowers including an airframe, a rotating shaft body rotatably provided on the airframe, and a claw body movably attached to the rotating shaft body are known (for example, Patent Document 1).

そして、この種の農作業機としては、例えば図12ないし図14に示すものがあり、この従来の農作業機は、互いに離間対向する左右1対の側板部1を有する機体2を備え、この機体2の両側板部1にて左右方向の回転軸体3が回転可能に支持されている。   Examples of this type of farm work machine include those shown in FIGS. 12 to 14, and this conventional farm work machine includes a machine body 2 having a pair of left and right side plates 1 that are spaced apart from each other. The left and right rotating shafts 3 are rotatably supported by both side plate portions 1.

また、回転軸体3は、複数の爪取付部4を外周側に有し、この各爪取付部4には、2枚の板刃部材5からなる爪体6が取付手段7を介して可動可能に取り付けられている。この取付手段7は、ボルト8、ナット9およびU字状部材(シャックル)10からなり、このU字状部材10が爪取付部4に固着されたボルト8のボルト軸部8aの外周側に回動可能に連結され、この連結されたU字状部材10の先端側に爪体6が取り付けられている。   The rotating shaft body 3 has a plurality of claw mounting portions 4 on the outer peripheral side, and a claw body 6 composed of two plate blade members 5 is movable to each claw mounting portion 4 via mounting means 7. It is attached as possible. The attachment means 7 includes a bolt 8, a nut 9, and a U-shaped member (shackle) 10, and the U-shaped member 10 is rotated to the outer peripheral side of the bolt shaft portion 8 a of the bolt 8 fixed to the claw attachment portion 4. The nail | claw body 6 is attached to the front end side of this connected U-shaped member 10 so that it can move.

なお、機体2の各側板部1は、上側板11と、この上側板11の下端部にボルト13およびナット14にて取り付けられた下側板12とを有している。上側板11の外面側には、回転軸体3の軸方向端部を回転可能に支持する軸受部材15がボルト16およびナット17にて取り付けられている。   Each side plate portion 1 of the airframe 2 has an upper plate 11 and a lower plate 12 attached to the lower end portion of the upper plate 11 with bolts 13 and nuts 14. On the outer surface side of the upper plate 11, a bearing member 15 that rotatably supports the axial end portion of the rotating shaft 3 is attached with a bolt 16 and a nut 17.

特開2012−235753号公報JP 2012-235753 A

しかしながら、上記従来の農作業機では、回転軸体3の回転停止時における爪取付部4の停止位置によっては、爪体6が倒れた状態となって機体2の側板部1やボルト16等と当接係合するような場合がある。   However, in the conventional agricultural machine described above, depending on the stop position of the claw mounting portion 4 when the rotation of the rotary shaft body 3 is stopped, the claw body 6 is in a fallen state and contacts the side plate portion 1 and the bolts 16 of the machine body 2. There are cases where they come into close contact.

そして、このような場合に、その状態のまま回転軸体3の回転を開始すると、爪体6が側板部1やボルト16等に噛み込んで回転軸体3の回転の妨げになるおそれがある。   In such a case, if the rotation of the rotary shaft 3 is started in this state, the claw body 6 may be engaged with the side plate portion 1, the bolt 16, etc., and hinder the rotation of the rotary shaft 3. .

本発明は、このような点に鑑みなされたもので、爪体が回転軸体の回転の妨げになることを防ぐことが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 prevent that a nail | claw body obstructs rotation of a rotating shaft body.

請求項1記載の農作業機は、機体と、この機体に回転可能に設けられた回転軸体と、この回転軸体に可動可能に取り付けられた爪体と、この爪体が倒れた状態となって前記機体と係合することを防止する爪倒れ防止体とを備え、前記爪体は、前記回転軸体の爪取付部に取付手段を介して可動可能に取り付けられ、前記爪倒れ防止体は、前記取付手段に回動可能に取り付けられているものである。 The agricultural machine according to claim 1 is in a state in which the machine body, a rotary shaft body rotatably provided on the machine body, a claw body movably attached to the rotary shaft body, and the claw body are tilted. A claw-falling prevention body that prevents the claw-falling body from engaging with the machine body, the claw body is movably attached to a claw-attaching portion of the rotating shaft body via an attachment means, and the claw-falling prevention body is , It is attached to the attachment means so as to be rotatable .

請求項2記載の農作業機は、請求項1記載の農作業機において、爪倒れ防止体は、取付手段のボルト軸部にこのボルト軸部を中心として回動可能に取り付けられているものである。The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein the claw-falling prevention body is rotatably attached to the bolt shaft portion of the attachment means around the bolt shaft portion.

請求項3記載の農作業機は、請求項2記載の農作業機において、爪倒れ防止体のうち回転方向前側に位置する部分には、前記回転軸体の外周面との当接により、前記爪倒れ防止体の前記ボルト軸部を中心とする回動を規制する回動規制凸部が形成されているものである The agricultural machine according to claim 3 is the agricultural machine according to claim 2, wherein the portion of the nail fall prevention body located on the front side in the rotation direction is brought into contact with the outer peripheral surface of the rotary shaft body to fall the nail. A rotation restricting convex portion for restricting rotation about the bolt shaft portion of the prevention body is formed .

本発明によれば、爪体が倒れた状態となって機体と係合することを防止する爪倒れ防止体を備えるため、爪体が回転軸体の回転の妨げになることを防ぐことができる。   According to the present invention, since the claw body is provided with the claw fall prevention body that prevents the claw body from falling into engagement with the airframe, the claw body can be prevented from obstructing the rotation of the rotary shaft body. .

本発明の第1の実施の形態に係る農作業機の正面図である。It is a front view of the agricultural working machine which concerns on the 1st Embodiment of this invention. 同上農作業機の側面図である。It is a side view of an agricultural working machine same as the above. 同上農作業機の部分正面図である。It is a partial front view of a farm work machine same as the above. 同上農作業機の部分側面図(一部分解)である。It is a partial side view (partially disassembled) of the agricultural working machine. 同上農作業機の部分正面図である。It is a partial front view of a farm work machine same as the above. 同上農作業機の部分側面図である。It is a partial side view of an agricultural working machine same as the above. 本発明の第2の実施の形態に係る農作業機の部分正面図である。It is a partial front view of the agricultural working machine which concerns on the 2nd Embodiment of this invention. 同上農作業機の部分側面図である。It is a partial side view of an agricultural working machine same as the above. 本発明の第3の実施の形態に係る農作業機の部分側面図である。It is a partial side view of the agricultural machine based on the 3rd Embodiment of this invention. 本発明の第4の実施の形態に係る農作業機の部分正面図である。It is a partial front view of the agricultural working machine which concerns on the 4th Embodiment of this invention. 同上農作業機の部分側面図である。It is a partial side view of an agricultural working machine same as the above. 従来の農作業機の部分正面図である。It is a partial front view of the conventional agricultural machine. 従来の農作業機の部分正面図である。It is a partial front view of the conventional agricultural machine. 従来の農作業機の部分側面図である。It is a partial side view of the conventional agricultural machine.

本発明の第1の実施の形態について図1ないし図6を参照して説明する。   A first embodiment of the present invention will be described with reference to FIGS.

図中の21は農作業機で、この農作業機21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、圃場上をトラクタの前進走行により前方(進行方向)に移動しながら草刈作業をする草刈作業機(フレールモア)である。   Reference numeral 21 in the figure denotes an agricultural machine. The agricultural machine 21 is connected to the rear part of a tractor (not shown), which is a traveling vehicle, for example, and mowing while moving forward (traveling direction) on the field by forward traveling of the tractor. This is a mowing machine (Flairmore) that works.

農作業機21は、図1および図2等に示されるように、トラクタの後部の3点ヒッチ部(作業機昇降支持部)に解除可能に連結される機体22と、この機体22に所定方向(図2等に示す回転方向)に回転可能に設けられた左右方向の回転軸体23と、この回転軸体23に可動可能に取り付けられた草刈用の複数の爪体24とを備えている。   As shown in FIG. 1 and FIG. 2, the farm work machine 21 includes a machine body 22 that is releasably connected to a three-point hitch part (work machine lifting support part) at the rear of the tractor, and a predetermined direction ( A rotation shaft body 23 in the left-right direction provided rotatably in the rotation direction shown in FIG. 2 and the like, and a plurality of nail bodies 24 for mowing attached movably to the rotation shaft body 23 are provided.

機体22は、図示しないトラクタの後部の3点ヒッチ部に解除可能に連結される3点連結部26を有している。3点連結部26は、トラクタの3点ヒッチ部の上部リンクに連結される1本のトップマスト27と、トラクタの3点ヒッチ部の下部リンクに連結される左右2本のロワアーム28とを有している。   The airframe 22 has a three-point connecting portion 26 that is releasably connected to a three-point hitch portion at the rear of the tractor (not shown). The three-point connecting part 26 has one top mast 27 connected to the upper link of the three-point hitch part of the tractor and two left and right lower arms 28 connected to the lower link of the three-point hitch part of the tractor. doing.

また、機体22は、左右方向中央部に入力軸支持部29を有し、この入力軸支持部29にて前後方向の入力軸30が回転可能に支持されている。入力軸30は、トラクタのPTO軸にジョイントを介して接続され、そのPTO軸から出力される動力が入力軸30に入力される。また、入力軸30には、この入力軸30に入力された動力を回転軸体23へ伝達する動力伝達手段31が接続されている。   The machine body 22 has an input shaft support portion 29 at the center in the left-right direction, and the input shaft 30 in the front-rear direction is rotatably supported by the input shaft support portion 29. The input shaft 30 is connected to the PTO shaft of the tractor via a joint, and power output from the PTO shaft is input to the input shaft 30. The input shaft 30 is connected to power transmission means 31 for transmitting the power input to the input shaft 30 to the rotary shaft body 23.

動力伝達手段31は、伝動シャフト32、上下のプーリ33,34、これら両プーリ33,34に掛け渡された無端状の伝動ベルト35等にて構成されている。そして、両プーリ33,34および伝動ベルト35は、機体22の左右方向一端側である左端側(進行方向左側)に位置する伝動ケース部36内に収納配設されている。伝動シャフト32は、入力軸支持部29から突出したフレームパイプ部37内に配設されている。   The power transmission means 31 is composed of a transmission shaft 32, upper and lower pulleys 33, 34, an endless transmission belt 35 spanned between these pulleys 33, 34, and the like. The pulleys 33 and 34 and the transmission belt 35 are housed and disposed in a transmission case portion 36 located on the left end side (the left side in the traveling direction) which is one end side in the left-right direction of the machine body 22. The transmission shaft 32 is disposed in a frame pipe portion 37 protruding from the input shaft support portion 29.

さらに、機体22は、この機体22の左右方向両端側に鉛直状に位置して互いに離間対向する左右1対の側板部41を有し、これら両側板部41にて水平状の回転軸体23が回転可能に支持されている。この回転軸体23の上方部は、湾曲状のカバー板部42にて覆われている。   Further, the machine body 22 has a pair of left and right side plate portions 41 that are vertically positioned on both ends in the left-right direction of the machine body 22 and are opposed to each other. Is rotatably supported. The upper part of the rotary shaft 23 is covered with a curved cover plate part 42.

左右の各側板部(回転軸体支持部)41は、上側板43と、この上側板43の下端部内面にボルト47およびナット48にて取り付けられた下側板44と、上側板43の下部外面にボルト49およびナット50にて取り付けられ回転軸体23の軸方向端部を回転可能に支持する軸受部材45と、上側板43の下部内面に突設されたボス部材46とを有している(図3参照)。なお、左側の側板部41の外面側に伝動ケース部36が設けられている。   Each of the left and right side plate portions (rotating shaft support portions) 41 includes an upper plate 43, a lower plate 44 attached to the inner surface of the lower end portion of the upper plate 43 with bolts 47 and nuts 48, and a lower outer surface of the upper plate 43. Are provided with a bolt 49 and a nut 50 to rotatably support the axial end of the rotary shaft 23 and a boss member 46 projecting from the lower inner surface of the upper plate 43. (See FIG. 3). A transmission case portion 36 is provided on the outer surface side of the left side plate portion 41.

回転軸体23は、機体22の両側板部41の下部にて回転可能に支持された断面円形状の左右方向の回転軸部51と、この回転軸部51の円筒面状の外周面に突設された複数の爪取付部52とを有している。   The rotating shaft body 23 protrudes from the left and right rotating shaft portions 51 having a circular cross section supported rotatably at the lower portions of both side plate portions 41 of the airframe 22, and the cylindrical outer peripheral surface of the rotating shaft portion 51. And a plurality of claw mounting portions 52 provided.

爪取付部52は、回転軸部51の略全長に分散して位置するように、回転軸部51の外周面における螺旋方向に等間隔をおいた複数位置に突出状に固設されており、側面視では爪取付部52が回転軸部51の周方向に90度間隔で配設されている。また、各爪取付部52は、例えば左右に互いに離間対向する対をなす対向板53にて構成されている。各対向板53には円形状の挿通用孔54が形成されている。   The claw mounting portions 52 are fixed in a projecting manner at a plurality of positions equidistantly spaced in the spiral direction on the outer peripheral surface of the rotating shaft portion 51 so as to be distributed over substantially the entire length of the rotating shaft portion 51. When viewed from the side, the claw mounting portions 52 are arranged at intervals of 90 degrees in the circumferential direction of the rotating shaft portion 51. In addition, each claw mounting portion 52 is configured by, for example, a pair of opposing plates 53 that are spaced apart from each other on the left and right. Each counter plate 53 is formed with a circular insertion hole 54.

そして、図3ないし図6にも示されるように、回転軸体23の各爪取付部52には、板状の刈爪である爪体24が取付手段56を介して可動可能でかつ脱着可能に取り付けられている。   As shown in FIGS. 3 to 6, each claw mounting portion 52 of the rotary shaft body 23 is movable and detachable with a claw body 24, which is a plate-shaped cutting claw, via an attaching means 56. Is attached.

各爪体24は、例えば断面へ字状をなすように中間の1箇所で折り曲げられた板状の2枚の板刃部材(爪構成部材)24aにて構成されている。各板刃部材24aは、側面視で略矩形状をなすもので、この板刃部材24aの基端側には、板刃部材24aの長手方向に沿った長手状の長孔24bが形成されている。   Each claw body 24 is composed of, for example, two plate-like plate blade members (claw constituent members) 24a that are bent at one intermediate position so as to form a letter-shaped cross section. Each plate blade member 24a has a substantially rectangular shape in a side view, and a longitudinal long hole 24b along the longitudinal direction of the plate blade member 24a is formed on the base end side of the plate blade member 24a. Yes.

また、取付手段56は、例えばボルト軸部57aおよびボルト頭部57bからなるボルト57と、このボルト57のボルト軸部57aのねじ溝部分に螺着可能なナット58と、ボルト軸部57aの外周側に2つの基端側が回動可能に連結された連結部材であるU字状部材(シャックル)59とにて構成されている。   The mounting means 56 includes, for example, a bolt 57 including a bolt shaft portion 57a and a bolt head portion 57b, a nut 58 that can be screwed into a thread groove portion of the bolt shaft portion 57a of the bolt 57, and an outer periphery of the bolt shaft portion 57a. A U-shaped member (shackle) 59, which is a connecting member in which two base ends are rotatably connected to the side.

U字状部材59は、基端側の円形環状をなす2つの環状部59aと、これら2つの環状部59aを繋ぐ先端側のU字部59bとからなり、各環状部59aには円形状の挿通用孔59cが形成されている。   The U-shaped member 59 includes two annular portions 59a forming a circular ring shape on the proximal end side, and a U-shaped portion 59b on the distal end side that connects these two annular portions 59a, and each annular portion 59a has a circular shape. An insertion hole 59c is formed.

そして、U字状部材59のU字部59bが爪体24の長孔24bに遊挿されるとともに、ボルト57のボルト軸部57aがそのU字状部材59の環状部59aの挿通用孔59cおよび回転軸体23の爪取付部52の挿通用孔54に挿通され、かつ、その挿通されたボルト57のボルト軸部57aにナット58が螺着されることにより、爪体24がこれらボルト57、ナット58およびU字状部材59を介して回転軸体23の爪取付部52に可動可能でかつ脱着可能に取り付けられている。   The U-shaped portion 59b of the U-shaped member 59 is loosely inserted into the elongated hole 24b of the claw body 24, and the bolt shaft portion 57a of the bolt 57 is inserted into the insertion hole 59c of the annular portion 59a of the U-shaped member 59 and The nut 58 is inserted into the insertion hole 54 of the claw mounting portion 52 of the rotating shaft body 23, and the nut 58 is screwed to the bolt shaft portion 57a of the inserted bolt 57, so that the claw body 24 has these bolts 57, A nut 58 and a U-shaped member 59 are movably and detachably attached to the claw attachment portion 52 of the rotary shaft body 23.

つまり、回転軸体23のすべての各爪取付部52には、取付手段56を介して爪体24が可動可能でかつ脱着可能に取り付けられている。そして、この状態で、U字状部材59は、取付手段56のボルト57のボルト軸部57aに対してこのボルト軸部57aを中心として回動可能となっている。また、U字状部材59のU字部59bが長孔24bに遊挿されているため、爪体24は、そのU字部59bに沿って摺動可能でかつそのU字部59bを中心として回動可能になっている。このため、例えば回転軸体23の回転時には、爪体24は、遠心力に基づき、回転軸体23の径方向に沿った状態となる。   That is, the claw bodies 24 are movably and detachably attached to all the claw attachment portions 52 of the rotary shaft body 23 via the attachment means 56. In this state, the U-shaped member 59 is rotatable about the bolt shaft portion 57a with respect to the bolt shaft portion 57a of the bolt 57 of the attachment means 56. Further, since the U-shaped portion 59b of the U-shaped member 59 is loosely inserted into the long hole 24b, the claw body 24 is slidable along the U-shaped portion 59b and is centered on the U-shaped portion 59b. It can be turned. For this reason, for example, when the rotating shaft body 23 rotates, the claw body 24 is in a state along the radial direction of the rotating shaft body 23 based on the centrifugal force.

また、農作業機21は、図3ないし図6等に示されるように、回転軸体23の回転停止時において、回転軸体23の軸方向両端部付近の爪体24が自重によって外側方側へ倒れた状態(倒れた姿勢)となって機体22の側板部41の内面側と当接係合(接触)することを防止する板状の爪倒れ防止体61を備えている。   Further, as shown in FIG. 3 to FIG. 6 and the like, the agricultural working machine 21 is configured such that when the rotation shaft body 23 stops rotating, the claw bodies 24 near both ends in the axial direction of the rotation shaft body 23 are moved outward by their own weight. There is provided a plate-like nail fall prevention body 61 that prevents the body 22 from coming into contact with (in contact with) the inner surface of the side plate portion 41 in a fallen state (fallen posture).

すなわち例えば、回転軸体23の軸方向一端側で側板部41の近傍に位置する例えば4つの爪取付部52および回転軸体23の軸方向他端側で側板部41の近傍に位置する例えば4つの爪取付部52のそれぞれに対して取付手段56を介して取り付けられた各爪体24は、取付手段56に脱着可能に取り付けた鉛直状で板状の爪倒れ防止体61に当接することによって、側板部41側に向かって倒れないようになっている。   That is, for example, four claw mounting portions 52 positioned in the vicinity of the side plate portion 41 on one end side in the axial direction of the rotating shaft body 23 and, for example, four positions in the vicinity of the side plate portion 41 on the other end side in the axial direction of the rotating shaft body 23. Each claw body 24 attached to each of the two claw attaching portions 52 via attachment means 56 is brought into contact with a vertical and plate-like claw fall prevention body 61 that is detachably attached to attachment means 56. The side plate 41 is prevented from falling toward the side.

各爪倒れ防止体61は、例えば所定形状の1枚の板状部材のみからなるもので、楕円状(略楕円状を含む)の本体板部62と、この本体板部62の基端側における回転軸体23の回転方向の前側部分に一体に突設された3角状(略3角状を含む)の突出板部である回動規制凸部63とにて構成されている。つまり、爪倒れ防止体61の基端側のうち、回転軸体23の回転方向の前側に位置する部分に、回転軸体23の回転軸部51の外周面との当接により、爪倒れ防止体61のボルト軸部57aを中心とする回転方向前側への回動(図4中、時計回りの回動)を規制する回動規制凸部63が突出状に形成されている。   Each nail collapse prevention body 61 is composed of, for example, a single plate-shaped member having a predetermined shape, and has an oval (including substantially oval) main body plate portion 62 and a base end side of the main body plate portion 62. It is comprised by the rotation control convex part 63 which is a triangular (including substantially triangular shape) protrusion board part protrudingly provided integrally by the front side part of the rotation direction of the rotating shaft body 23. As shown in FIG. That is, the portion of the base end side of the claw falling prevention body 61 located on the front side in the rotation direction of the rotating shaft body 23 is in contact with the outer peripheral surface of the rotating shaft portion 51 of the rotating shaft body 23 to prevent claw falling. A rotation restricting convex portion 63 for restricting the forward rotation of the body 61 about the bolt shaft portion 57a (clockwise rotation in FIG. 4) is formed in a protruding shape.

また、本体板部62の基端側の幅方向中央部には、円形状の挿通用孔64が形成されている。本体板部62の先端側には、本体板部62の長手方向に沿った長手状の長孔65が形成されている。   In addition, a circular insertion hole 64 is formed in the central portion in the width direction on the base end side of the main body plate portion 62. On the distal end side of the main body plate portion 62, a long elongated hole 65 is formed along the longitudinal direction of the main body plate portion 62.

そして、本体板部62の挿通用孔64にはボルト57のボルト軸部57aが挿通され、かつ、本体板部62の長孔65にはU字状部材59のU字部59bが遊挿されている。   The bolt shaft portion 57a of the bolt 57 is inserted into the insertion hole 64 of the main body plate portion 62, and the U-shaped portion 59b of the U-shaped member 59 is loosely inserted into the long hole 65 of the main body plate portion 62. ing.

こうして、爪倒れ防止体61は、回転軸体23とともに回転するように、取付手段56のボルト57のボルト軸部57aにこのボルト軸部57aを中心として回動可能に取り付けられている。つまり、爪倒れ防止体61は、U字状部材59と一体となって、ボルト57のボルト軸部57aに対してこのボルト軸部57aを中心として回動可能となっている。そして、この鉛直板状の爪倒れ防止体61は、常にボルト軸部57aに対してその軸方向に直交する立ち状態となっており、倒れた状態にはならない。   Thus, the claw-falling prevention body 61 is rotatably attached to the bolt shaft portion 57a of the bolt 57 of the attachment means 56 so as to rotate together with the rotary shaft body 23 around the bolt shaft portion 57a. In other words, the claw falling prevention body 61 is integrated with the U-shaped member 59 and is rotatable with respect to the bolt shaft portion 57a of the bolt 57 around the bolt shaft portion 57a. The vertical plate-like claw falling prevention body 61 is always in a standing state perpendicular to the axial direction with respect to the bolt shaft portion 57a, and does not fall down.

なお、図2に示されるように、機体22の後部には接地輪67が設けられ、この接地輪67の高さ位置はハンドル68の操作によって調整可能となっている。   As shown in FIG. 2, a grounding wheel 67 is provided at the rear of the machine body 22, and the height position of the grounding wheel 67 can be adjusted by operating the handle 68.

次に、上記農作業機21の作用等を説明する。   Next, the operation and the like of the farm work machine 21 will be described.

農作業機21を用いて草刈作業をする場合、農作業機21をトラクタの後部に連結した状態でトラクタの前進走行により進行方向に移動させつつ、トラクタ側からの動力によって回転軸体23を所定方向に高速回転させる。   When mowing using the agricultural machine 21, the agricultural machine 21 is connected to the rear part of the tractor and moved in the traveling direction by the forward traveling of the tractor, while the rotating shaft body 23 is moved in a predetermined direction by the power from the tractor. Rotate at high speed.

すると、複数の爪体24が、回転軸体23とともに所定の回転方向に高速回転しながら、圃場に植生した雑草等を細断処理する。   Then, the plurality of claws 24 shred the weeds and the like vegetated on the farm field while rotating at a high speed in the predetermined rotation direction together with the rotating shaft 23.

ここで、例えば草刈作業終了等により回転軸体23を停止させると、爪取付部52の停止位置によっては、回転軸体23の軸方向両端部付近の爪体24が、その自重に基づいて、近接状に対向する側板部41側に向かって倒れようとする場合がある。   Here, for example, when the rotary shaft body 23 is stopped due to the end of mowing work, etc., depending on the stop position of the claw mounting portion 52, the claw bodies 24 near both ends in the axial direction of the rotary shaft body 23 are based on their own weights. There is a case where it tends to fall toward the side plate portion 41 side facing in the proximity.

しかし、この場合、図5および図6に示されるように、爪体24は、爪倒れ防止体61に当接することにより、側板部41側への倒れ動作が規制される。つまり、爪倒れ防止体61によって、爪体24が機体22の側板部41と当接係合することが防止される。その結果、爪体24は、上側板43の内面、下側板44の上面、或いはボルト49の頭部等に接触することがなく噛み込むこともない。   However, in this case, as shown in FIG. 5 and FIG. 6, the claw body 24 abuts on the claw fall-preventing body 61, so that the fall operation toward the side plate portion 41 is restricted. In other words, the claw falling prevention body 61 prevents the claw body 24 from abutting and engaging with the side plate portion 41 of the machine body 22. As a result, the claw body 24 does not come into contact with the inner surface of the upper plate 43, the upper surface of the lower plate 44, the head of the bolt 49, or the like, and does not bite.

このように農作業機21によれば、爪体24が倒れた状態となって機体22の側板部41と係合することを防止する爪倒れ防止体61を備えるため、例えば回転軸体23の所定方向への回転を開始した際に爪体24が側板部41やボルト49等に噛み込むことがなく、爪体24が回転軸体23の回転の妨げになることを適切に防ぐことができる。   Thus, according to the agricultural machine 21, since the claw body 24 is provided with the nail fall prevention body 61 that prevents the claw body 24 from falling down and engaging with the side plate portion 41 of the machine body 22, for example, the predetermined rotating shaft body 23 is provided. When the rotation in the direction is started, the claw body 24 does not bite into the side plate portion 41, the bolt 49, etc., and the claw body 24 can be appropriately prevented from obstructing the rotation of the rotary shaft body 23.

また、爪倒れ防止体61は、取付手段56のボルト57に容易に取り付けることができ、またボルト57を外すことで交換も容易であり、しかも、従来品に対して後付けすることもできる。   Further, the claw-falling prevention body 61 can be easily attached to the bolt 57 of the attaching means 56, can be easily replaced by removing the bolt 57, and can be retrofitted to the conventional product.

さらに、爪倒れ防止体61のうち回転方向前側に位置する部分には、回転軸体23の回転軸部51の外周面との当接により爪倒れ防止体61のボルト軸部57aを中心とする一方向(回転方向前側)への回動を規制する回動規制凸部63が突出状に形成されているため、爪体24が回転軸体23の回転の妨げになることを適切かつ効果的に防ぐことができる。   Further, the portion of the nail fall prevention body 61 positioned on the front side in the rotation direction is centered on the bolt shaft portion 57a of the nail fall prevention body 61 by contact with the outer peripheral surface of the rotation shaft portion 51 of the rotation shaft body 23. Since the rotation restricting convex portion 63 that restricts the rotation in one direction (front side in the rotation direction) is formed in a protruding shape, it is appropriate and effective that the claw body 24 prevents the rotation shaft body 23 from rotating. Can be prevented.

すなわち例えば、回転軸体23の回転停止時に、図3および図4に示す状態になった場合でも、回転軸体23を回転方向へ回転させると、爪体24は、ボルト49や下側板44の上面に当たっても回転方向後側へ逃げるため、爪体24が回転軸体23の回転の妨げになることがない。これに対し、従来の構成では、図14の状態で回転軸体3を回転方向へ回転させた場合、爪体6は回転方向後側へ逃げず、例えば爪体6がボルト16に噛み込んで回転軸体3の回転の妨げとなる。   That is, for example, even when the rotation shaft body 23 stops rotating, when the rotation shaft body 23 is rotated in the rotation direction even when the state shown in FIGS. Even if it hits the top surface, it escapes to the rear side in the rotation direction, so that the claw body 24 does not hinder the rotation of the rotary shaft body 23. On the other hand, in the conventional configuration, when the rotary shaft 3 is rotated in the rotation direction in the state of FIG. 14, the claw body 6 does not escape to the rear side in the rotation direction. For example, the claw body 6 is engaged with the bolt 16. This hinders the rotation of the rotating shaft 3.

次に、図7および図8には、本発明の第2の実施の形態が示されている。   Next, FIGS. 7 and 8 show a second embodiment of the present invention.

この第2の実施の形態に係る農作業機21は、爪体24が自重で外側方側(側板部側)へ倒れた状態となって機体22の側板部41の内面側と当接係合することを防止する環状の爪倒れ防止体71を備えている。   The farm work machine 21 according to the second embodiment comes into contact with and engages with the inner surface side of the side plate portion 41 of the machine body 22 in a state in which the claw body 24 falls to the outer side (side plate portion side) by its own weight. An annular nail collapse prevention body 71 is provided to prevent this.

この爪倒れ防止体71は、例えば回転軸体23の回転軸部51よりも径大な円形環状に形成されている。そして、爪倒れ防止体71は、回転軸体23の回転軸部51の軸方向端部の外周面に複数本、例えば放射状の4本の棒状の取付部材(取付パイプ)72を介して固定的に取り付けられている。つまり、各取付部材72の基端部が回転軸体23の回転軸部51の外周面の所定箇所に固着され、かつ、各取付部材72の先端部に環状の爪倒れ防止体71が固着されており、この爪倒れ防止体71は回転軸体23とともに回転する。なお、その他の構成は第1の実施の形態と基本的に同じである。   The claw falling prevention body 71 is formed in, for example, a circular ring having a larger diameter than the rotation shaft portion 51 of the rotation shaft body 23. The claw falling prevention body 71 is fixed to the outer peripheral surface of the axial end portion of the rotary shaft portion 51 of the rotary shaft body 23 via a plurality of, for example, four radial rod-like mounting members (mounting pipes) 72. Is attached. That is, the base end portion of each mounting member 72 is fixed to a predetermined location on the outer peripheral surface of the rotating shaft portion 51 of the rotating shaft body 23, and the annular claw falling prevention body 71 is fixed to the distal end portion of each mounting member 72. The claw falling prevention body 71 rotates together with the rotating shaft body 23. Other configurations are basically the same as those in the first embodiment.

そして、この第2の実施の形態に係る農作業機21でも、爪体24の倒れを防止する爪倒れ防止体71を備えるため、爪体24が回転軸体23の回転の妨げになることを防ぐことができる。   Further, the farm work machine 21 according to the second embodiment also includes the nail collapse prevention body 71 that prevents the nail body 24 from falling, so that the nail body 24 is prevented from obstructing the rotation of the rotary shaft body 23. be able to.

また、爪倒れ防止体71の形状は、円形環状には限定されず、例えば図9に示す第3の実施の形態のように、多角形環状、例えば矩形環状(略矩形環状を含む)であっても同じ作用効果を奏する。この図9に示された矩形環状の爪倒れ防止体71は、取付部材72を介さずに、回転軸体23の回転軸部51の外周面に溶接等により直接固着されている。   Further, the shape of the nail collapse prevention body 71 is not limited to a circular ring shape, and is, for example, a polygonal ring shape, for example, a rectangular ring shape (including a substantially rectangular ring shape) as in the third embodiment shown in FIG. But it has the same effect. The rectangular annular claw-falling prevention body 71 shown in FIG. 9 is directly fixed to the outer peripheral surface of the rotary shaft portion 51 of the rotary shaft body 23 by welding or the like without using the attachment member 72.

なお、例えば図示しないが、爪倒れ防止体71は、正方形環状、6角形環状や8角形環状等でもよく、また、軸方向長さ寸法が比較的短い短筒状等でもよい。   For example, although not shown, the nail collapse prevention body 71 may be a square ring, a hexagonal ring, an octagonal ring, or the like, or a short cylinder having a relatively short axial length.

また、図10および図11には、本発明の第4の実施の形態が示されている。   10 and 11 show a fourth embodiment of the present invention.

この第4の実施の形態に係る農作業機21は、爪体24が自重で外側方側(側板部側)へ倒れた状態となって機体22の側板部41の内面側と当接係合することを防止する短筒状の爪倒れ防止体81を備えている。   The farm working machine 21 according to the fourth embodiment is in contact with and engaged with the inner surface side of the side plate portion 41 of the machine body 22 in a state where the claw body 24 falls to the outer side (side plate portion side) by its own weight. There is provided a short tube-shaped nail fall prevention body 81 that prevents this.

この爪倒れ防止体81は、例えば回転軸体23の回転軸部51よりも径大な円筒状で、かつ軸方向長さ寸法が比較的短い短筒状に形成されている。そして、爪倒れ防止体81は、機体22の側板部41の上側板43の内面に固定的に取り付けられている。つまり、この爪倒れ防止体81は、前記爪倒れ防止体61,71とは異なり、回転軸体23とともに回転するものではない。なお、その他の構成は第1の実施の形態と基本的に同じである。   The claw-falling prevention body 81 is formed in, for example, a cylindrical shape having a diameter larger than that of the rotation shaft portion 51 of the rotation shaft body 23 and a short cylinder shape having a relatively short axial length. The nail collapse prevention body 81 is fixedly attached to the inner surface of the upper plate 43 of the side plate portion 41 of the machine body 22. That is, the nail fall prevention body 81 does not rotate with the rotary shaft body 23, unlike the nail fall prevention bodies 61 and 71. Other configurations are basically the same as those in the first embodiment.

そして、この第4の実施の形態に係る農作業機21でも、爪体24の倒れを防止する爪倒れ防止体81を備えるため、爪体24が回転軸体23の回転の妨げになることを防ぐことができる。   Further, the farm work machine 21 according to the fourth embodiment also includes the nail fall prevention body 81 that prevents the nail body 24 from falling, and thus prevents the nail body 24 from obstructing the rotation of the rotary shaft body 23. be able to.

なお、爪倒れ防止体81の形状は、例えば図示しないが、多角形の短筒状でもよく、また円形や多角形の環状でもよい。   The shape of the nail collapse prevention body 81 is not shown, for example, but may be a polygonal short cylinder, or may be a circle or a polygonal ring.

また、爪倒れ防止体81が機体22の側板部41に直接固着された構成でもよく、爪倒れ防止体81が取付部材を介して機体22の側板部41に固着された構成等でもよい。   Further, the structure in which the nail collapse prevention body 81 is directly fixed to the side plate portion 41 of the machine body 22 may be used, or the nail collapse prevention body 81 may be fixed to the side plate portion 41 of the machine body 22 through an attachment member.

さらに、爪倒れ防止体81が機体22に脱着可能に取り付けられた構成や、爪倒れ防止体81が回転軸体23に脱着可能に取り付けられた構成等でもよい。   Further, a configuration in which the nail fall prevention body 81 is detachably attached to the body 22 or a configuration in which the nail fall prevention body 81 is detachably attached to the rotary shaft body 23 may be used.

なお、農作業機21は、草刈作業をする草刈作業機である場合について説明したが、例えば耕耘整地作業をするロータリやハロー等でもよい。   In addition, although the case where the agricultural working machine 21 is a mowing work machine that performs mowing work has been described, for example, a rotary or halo that performs plowing work may be used.

また、農作業機21は、トラクタの後部に連結する牽引式には限定されず、走行手段を備えた自走式でもよい。   Further, the farm work machine 21 is not limited to a pulling type that is connected to the rear portion of the tractor, and may be a self-propelled type that includes traveling means.

21 農作業機
22 機体
23 回転軸体
24 爪体
52 爪取付部
56 取付手段
57a ボルト軸部
61,71,81 爪倒れ防止体
63 回動規制凸部
21 Farm machines
22 Airframe
23 Rotating shaft
24 nails
52 Claw mounting part
56 Mounting method
57a Bolt shaft
61, 71, 81 Nail fall prevention body
63 Rotation restricting convex

Claims (3)

機体と、
この機体に回転可能に設けられた回転軸体と、
この回転軸体に可動可能に取り付けられた爪体と、
この爪体が倒れた状態となって前記機体と係合することを防止する爪倒れ防止体とを備え
前記爪体は、前記回転軸体の爪取付部に取付手段を介して可動可能に取り付けられ、
前記爪倒れ防止体は、前記取付手段に回動可能に取り付けられている
ことを特徴とする農作業機。
The aircraft,
A rotating shaft body rotatably provided on the airframe;
A claw body movably attached to the rotating shaft body;
A nail fall prevention body that prevents the nail body from falling into engagement with the aircraft ,
The claw body is movably attached to a claw attachment portion of the rotating shaft body via an attachment means,
The agricultural machine according to claim 1, wherein the nail fall prevention body is rotatably attached to the attachment means .
爪倒れ防止体は、取付手段のボルト軸部にこのボルト軸部を中心として回動可能に取り付けられているThe nail fall prevention body is attached to the bolt shaft portion of the attachment means so as to be rotatable about the bolt shaft portion.
ことを特徴とする請求項1記載の農作業機。The agricultural machine according to claim 1.
倒れ防止体のうち回転方向前側に位置する部分には、回転軸体の外周面との当接により、前記爪倒れ防止体の前記ボルト軸部を中心とする回動を規制する回動規制凸部が形成されている
ことを特徴とする請求項2記載の農作業機。
The part located in the rotating direction front side of the pawl falling prevention member, the contact between the outer peripheral surface of the rotary shaft, the rotation restricting for regulating the pivotal movement around the bolt shank of the nail falling prevention member The agricultural machine according to claim 2, wherein a convex portion is formed.
JP2013120618A 2013-06-07 2013-06-07 Agricultural machine Active JP6161963B2 (en)

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JP6593861B2 (en) * 2015-02-05 2019-10-23 株式会社タカキタ Whole crop harvesting machine

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Publication number Priority date Publication date Assignee Title
US4211060A (en) * 1978-08-21 1980-07-08 Hesston Corporation Mowing rotor
JPS6183828U (en) * 1984-11-02 1986-06-03
JPH1056801A (en) * 1996-08-14 1998-03-03 Mitsubishi Agricult Mach Co Ltd Tillage tine having variable turning radius
US6000205A (en) * 1998-01-26 1999-12-14 Textron Inc. Flail-type vegetation cutter
JP2002320872A (en) * 2001-04-27 2002-11-05 Yutaka Kanamaru Forward swing type rotary blade

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