JP2017051109A - Agricultural implement - Google Patents

Agricultural implement Download PDF

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JP2017051109A
JP2017051109A JP2015175858A JP2015175858A JP2017051109A JP 2017051109 A JP2017051109 A JP 2017051109A JP 2015175858 A JP2015175858 A JP 2015175858A JP 2015175858 A JP2015175858 A JP 2015175858A JP 2017051109 A JP2017051109 A JP 2017051109A
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stainless steel
bolt
plate portion
plate
steel plate
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JP6655917B2 (en
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黒田　将仁
Masahito Kuroda
将仁 黒田
池田　俊朗
Toshiaki Ikeda
俊朗 池田
淳司 岩松
Junji Iwamatsu
淳司 岩松
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Matsuyama Plow Manufacturing Co Ltd
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Matsuyama Plow Manufacturing Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an agricultural implement capable of suppressing adhesion of soil.SOLUTION: An agricultural implement 11 includes tillage means 13, covering means 14 for covering the tillage means 13, and stainless steel plates 37, 39 fixed to the covering means 14. Each of the stainless steel plates 37, 39 has a bent plate part, an opposite plate part, and a hole part for bolt insertion. Bolts 41, 46 for fixing the stainless steel plates 37, 39 are not projected from a surface on the tillage means 13 side of the stainless steel plates 37, 39.SELECTED DRAWING: Figure 1

Description

本発明は、土の付着を抑制できる農作業機に関するものである。   The present invention relates to an agricultural machine capable of suppressing soil adhesion.

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。   DESCRIPTION OF RELATED ART Conventionally, the agricultural working machine described in the following patent document 1, for example is known.

この従来の農作業機は、耕耘作業をする耕耘手段と、この耕耘手段を覆う覆い手段と、この覆い手段に解除可能に固定された土付着防止部材（ステンレス鋼板）とを備えている。   This conventional farming machine is provided with a plowing means for performing a plowing work, a covering means for covering the plowing means, and a soil adhesion preventing member (stainless steel plate) fixed to the covering means so as to be releasable.

そして、図１８に示すように、土付着防止部材１は、耕耘手段（図示せず）の後方を覆う整地体２に、ボルト３、ナット４およびワッシャ５によって固定されている。   And as shown in FIG. 18, the soil adhesion prevention member 1 is being fixed to the leveling body 2 which covers the back of a tilling means (not shown) with the volt | bolt 3, the nut 4, and the washer 5. As shown in FIG.

この土付着防止部材１の固定に用いられた固定部材であるボルト３は、六角状の頭部3aを有し、この頭部3aが土付着防止部材１の耕耘手段側の面から突出している。   The bolt 3 which is a fixing member used for fixing the soil adhesion preventing member 1 has a hexagonal head 3a, and the head 3a protrudes from the surface of the soil adhesion preventing member 1 on the side of the tillage means. .

特開２０１４−３９４８８号公報（図３）JP 2014-39488 A (FIG. 3)

しかしながら、上記従来の農作業機では、ボルト３の頭部3aが土付着防止部材１の耕耘手段側の面から突出しているため、土がボルト３の頭部3aに付着して成長しやすく、また、その土を鎌等の道具７を用いて除去する際には、ボルト３の頭部3aが邪魔で土除去作業がやりにくい。   However, in the conventional agricultural machine, the head 3a of the bolt 3 protrudes from the surface of the soil adhesion preventing member 1 on the side of the tillage means, so that the soil adheres to the head 3a of the bolt 3 and grows easily. When removing the soil using a tool 7 such as a sickle, the head 3a of the bolt 3 is in the way, making it difficult to remove the soil.

本発明は、このような点に鑑みなされたもので、土の付着を抑制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 suppress adhesion of soil.

請求項１記載の農作業機は、耕耘作業をする耕耘手段と、この耕耘手段を覆う覆い手段と、この覆い手段に固定された土付着防止部材と、この土付着防止部材の固定に用いられた固定部材とを備え、前記土付着防止部材は、折り曲げにより形成された折曲板部と、この折曲板部と対向して位置する対向板部と、前記折曲板部および前記対向板部に形成された孔部とを有し、前記固定部材は、前記土付着防止部材の前記孔部に挿入され、前記土付着防止部材の前記耕耘手段側の面から突出していないものである。   The agricultural machine according to claim 1 is used for plowing means for plowing work, covering means for covering the tilling means, a soil adhesion preventing member fixed to the covering means, and fixing of the soil adhesion preventing member. The soil adhesion preventing member includes a bent plate portion formed by bending, a counter plate portion positioned to face the bent plate portion, the bent plate portion, and the counter plate portion. The fixing member is inserted into the hole of the soil adhesion preventing member and does not protrude from the surface of the soil adhesion preventing member on the tillage means side.

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、覆い手段と土付着防止部材との間には、前記土付着防止部材の振動を許容する隙間が存在するものである。   The agricultural machine according to claim 2 is the agricultural machine according to claim 1, wherein a gap allowing vibration of the soil adhesion preventing member exists between the covering means and the soil adhesion preventing member.

請求項３記載の農作業機は、請求項１または２記載の農作業機において、固定部材は、頭部を有するボルトであり、前記ボルトの前記頭部の少なくとも一部が、土付着防止部材の孔部に収納されているものである。   The agricultural machine according to claim 3 is the agricultural machine according to claim 1 or 2, wherein the fixing member is a bolt having a head, and at least a part of the head of the bolt is a hole of the soil adhesion preventing member. It is stored in the part.

請求項４記載の農作業機は、請求項３記載の農作業機において、ボルトの頭部の表面が、土付着防止部材の耕耘手段側の面と同一面上に位置するものである。   The farm machine according to claim 4 is the farm machine according to claim 3, wherein the surface of the head of the bolt is located on the same surface as the surface of the soil adhesion preventing member on the side of the tillage means.

本発明によれば、固定部材が土付着防止部材の耕耘手段側の面から突出していないので、土の付着を抑制でき、また、土が土付着防止部材の耕耘手段側の面に付着しても容易に除去できる。   According to the present invention, since the fixing member does not protrude from the surface of the soil adhesion preventing member on the side of the tillage means, the adhesion of soil can be suppressed, and the soil adheres to the surface of the soil adhesion prevention member on the side of the tillage means. Can be easily removed.

本発明の第１の実施の形態に係る農作業機の側面図である。It is a side view of the agricultural working machine which concerns on the 1st Embodiment of this invention. 同上農作業機の覆い手段のカバー体の側面視断面図である。It is side surface sectional drawing of the cover body of the covering means of an agricultural working machine same as the above. 同上農作業機の覆い手段の整地体の側面視断面図である。It is side surface sectional drawing of the leveling body of the covering means of an agricultural working machine same as the above. 同上農作業機の土付着防止部材（ステンレス板）の部分正面図である。It is a partial front view of the soil adhesion preventing member (stainless steel plate) of the agricultural machine. 図４におけるＡ−Ａ断面図である。It is AA sectional drawing in FIG. 図４におけるＡ−Ａ断面斜視図である。It is an AA cross-sectional perspective view in FIG. 同上農作業機の作用説明図である。It is operation | movement explanatory drawing of a farm work 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断面図である。It is a fragmentary sectional view of the agricultural working machine which concerns on the 2nd Embodiment of this invention. 同上部分の断面斜視図である。It is a cross-sectional perspective view of the same part. 本発明の第３の実施の形態に係る農作業機の部分断面図である。It is a fragmentary sectional view of the agricultural working machine which concerns on the 3rd Embodiment of this invention. 同上部分の断面斜視図である。It is a cross-sectional perspective view of the same part. 本発明の第４の実施の形態に係る農作業機の部分断面図である。It is a fragmentary sectional view of the agricultural working machine which concerns on the 4th Embodiment of this invention. 同上部分の断面斜視図である。It is a cross-sectional perspective view of the same part. 本発明の第５の実施の形態に係る農作業機の部分断面図である。It is a fragmentary sectional view of the agricultural working machine which concerns on the 5th Embodiment of this invention. 同上部分の断面斜視図である。It is a cross-sectional perspective view of the same part. 本発明の第６の実施の形態に係る農作業機の部分断面図である。It is a fragmentary sectional view of the agricultural working machine which concerns on the 6th Embodiment of this invention. 同上部分の断面斜視図である。It is a cross-sectional perspective view of the same part. 従来の農作業機の部分断面図である。It is a fragmentary sectional 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７を参照して説明する。   A first embodiment of the present invention will be described with reference to FIGS.

図１において、11は農作業機で、この農作業機11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、そのトラクタの前進走行により圃場を進行方向である前方に移動しながら農作業（耕耘整地作業等）をする牽引式のロータリー作業機である。   In FIG. 1, 11 is an agricultural machine, and this agricultural machine 11 is connected to the rear part of a tractor (not shown), which is a traveling vehicle, for example, and moves forward in the traveling direction by the forward movement of the tractor. This is a tow-type rotary work machine that performs farming work (cultivation leveling work, etc.).

農作業機11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た機体12と、この機体12に回転可能に設けられ所定方向に回転しながら耕耘作業をする耕耘手段13と、この耕耘手段13を覆う覆い手段14とを備えている。   The farm work machine 11 includes a machine body 12 removably connected to a three-point link part at the rear of the tractor, a tilling means 13 that is rotatably provided on the machine body 12 and performs a tilling work while rotating in a predetermined direction. And covering means 14 for covering the means 13.

機体12は、前後方向の入力軸16を回転可能に支持するミッションケース17を左右方向中央部に有している。入力軸16は、トラクタのＰＴＯ軸にジョイントを介して接続され、トラクタ側からの動力を農作業機11側に入力し、この入力された動力に基づいて耕耘手段13が回転する。   The airframe 12 has a mission case 17 that rotatably supports the input shaft 16 in the front-rear direction at the center in the left-right direction. The input shaft 16 is connected to the PTO shaft of the tractor via a joint, and inputs power from the tractor side to the agricultural machine 11 side, and the tillage means 13 rotates based on the input power.

ミッションケース17の左右の側面部には、左右方向長手状のフレームパイプ18の内端部がそれぞれ取り付けられている。左側のフレームパイプ18の外端部である左端部には、伝動ケース部であるチェーンケース19の上部が取り付けられている。一方、右側のフレームパイプ18の外端部である右端部には、板状のブラケット（図示せず）の上部が取り付けられている。   The left and right side portions of the mission case 17 are respectively attached to the inner end portions of the frame pipe 18 that is elongated in the left-right direction. An upper portion of a chain case 19 that is a transmission case portion is attached to a left end portion that is an outer end portion of the left frame pipe 18. On the other hand, an upper portion of a plate-like bracket (not shown) is attached to a right end portion which is an outer end portion of the right frame pipe 18.

そして、チェーンケース19の下部とブラケットの下部との間には、所定の回転方向（例えばダウンカット方向）に回転しながら耕耘作業をする耕耘手段13が架設されている。   Further, between the lower part of the chain case 19 and the lower part of the bracket, a cultivating means 13 for cultivating the cultivating work while rotating in a predetermined rotational direction (for example, a down cut direction) is installed.

耕耘手段13は、入力軸16側からの動力で回転する左右方向長手状の回転軸である耕耘軸21と、この耕耘軸21に取り付けられこの耕耘軸21とともに回転しながら耕耘作業をする複数の耕耘爪22とを有している。   The cultivating means 13 includes a cultivating shaft 21 that is a longitudinally rotating shaft that is rotated by power from the input shaft 16 side, and a plurality of cultivating work that is attached to the cultivating shaft 21 and rotates together with the cultivating shaft 21. It has a tilling claw 22.

覆い手段14は、耕耘手段13の上方を覆う左右方向長手状で板状のカバー体（上方覆い部）23と、耕耘手段13の側方を覆う板状の左右１対の側方カバー体（側方覆い部）24と、耕耘手段13の後方を覆い、耕耘手段13の後方で整地作業をする左右方向長手状で板状の整地体（後方覆い部）25とを有している。   The covering means 14 includes a plate-like cover body (upper cover portion) 23 in the left-right direction that covers the top of the tilling means 13 and a pair of left and right side cover bodies that cover the sides of the tilling means 13 ( A side cover) 24 and a plate-shaped leveling body (rear cover part) 25 that is long in the left-right direction and covers the rear of the tilling means 13 and performs leveling work behind the tilling means 13.

カバー体23は、チェーンケース19およびブラケット間に固設されている。カバー体23は、図２に示されるように、左右方向に細長い板状で耕耘手段13の上方を覆うカバー部であるカバー本体板部27を有している。このカバー本体板部27の前後端部には、左右方向に間隔をおいて並ぶ複数の孔部28がそれぞれ形成されている。   The cover body 23 is fixed between the chain case 19 and the bracket. As shown in FIG. 2, the cover body 23 has a cover main body plate portion 27 that is a cover portion that is elongated in the left-right direction and covers the top of the tillage means 13. A plurality of hole portions 28 are formed in the front and rear end portions of the cover main body plate portion 27 so as to be arranged at intervals in the left-right direction.

左側の側方カバー体24は、機体11のチェーンケース19の後端部に固着されている。右側の側方カバー体24は、機体11のブラケットの後端部に固着されている。   The left side cover body 24 is fixed to the rear end portion of the chain case 19 of the body 11. The right side cover body 24 is fixed to the rear end portion of the bracket of the body 11.

整地体（均平板）25は、カバー体23の後端部に上下方向に回動可能に設けられている。つまり、整地体25の上端部が、カバー体23の後端部に左右方向の軸30を介して回動可能に取り付けられている。整地体25は、図３に示されるように、左右方向に細長い板状で耕耘手段13の後方を覆って整地作業をする整地部である整地本体板部31を有している。   The leveling body (level plate) 25 is provided at the rear end of the cover body 23 so as to be rotatable in the vertical direction. That is, the upper end portion of the leveling body 25 is rotatably attached to the rear end portion of the cover body 23 via the left / right axis 30. As shown in FIG. 3, the leveling body 25 has a leveling main body plate part 31 that is a leveling part that performs a leveling work by covering the back of the tillage means 13 with a plate shape elongated in the left-right direction.

整地本体板部31の上下方向中間部である中央部（略中央部を含む）には、左右方向に間隔をおいて並ぶ複数の孔部32が形成されている。整地本体板部31の下端部には、左右方向に細長い筒状をなす筒状部分33が形成されている。   A plurality of hole portions 32 arranged at intervals in the left-right direction are formed in a central portion (including a substantially central portion) that is an intermediate portion in the vertical direction of the leveling main body plate portion 31. A cylindrical portion 33 having a cylindrical shape elongated in the left-right direction is formed at the lower end portion of the leveling main body plate portion 31.

また、農作業機11は、カバー体23のカバー本体板部27の耕耘手段13側の面である表面27aの少なくとも一部、例えば全部を覆うように、前後の固定手段36によってカバー体23のカバー本体板部27に解除可能（交換可能）に固定された左右方向長手状で板状の土付着防止部材であるステンレス鋼板37と、整地体25の整地本体板部31の耕耘手段13側の面である表面31aの少なくとも一部、例えば下部を覆うように、固定手段38によって整地体25の整地本体板部31に解除可能（交換可能）に固定された左右方向長手状で板状の土付着防止部材であるステンレス鋼板39とを備えている。   Further, the agricultural machine 11 covers the cover body 23 with the front and rear fixing means 36 so as to cover at least a part, for example, the entire surface 27a of the cover body plate portion 27 of the cover body 23 on the side of the tillage means 13 side. A stainless steel plate 37 that is a plate-shaped soil adhesion preventing member fixed in the left-right direction fixed to the main body plate portion 27 so as to be releasable (replaceable), and a surface on the tillage means 13 side of the leveling main body plate portion 31 of the leveling body 25 Left and right longitudinal plate-like soil attached to the leveling body plate 31 of the leveling body 25 by the fixing means 38 so as to be releasable (replaceable) so as to cover at least a part of the surface 31a, for example, the lower part And a stainless steel plate 39 as a prevention member.

つまり、農作業機11は、カバー本体板部27に対応して湾曲板状に形成されカバー体23のカバー本体板部27の表面27aへの土付着を防止するカバー体23側のステンレス鋼板37と、整地本体板部31に対応して湾曲板状に形成され整地体25の整地本体板部31の表面31aへの土付着を防止する整地体25側のステンレス鋼板39とを備えている。   That is, the agricultural machine 11 is formed in a curved plate shape corresponding to the cover body plate portion 27, and the stainless steel plate 37 on the cover body 23 side that prevents soil adhesion to the surface 27a of the cover body plate portion 27 of the cover body 23, And a stainless steel plate 39 on the leveling body 25 side, which is formed in a curved plate shape corresponding to the leveling body plate part 31 and prevents soil adhesion to the surface 31a of the leveling body plate part 31 of the leveling body 25.

この各ステンレス鋼板37，39は、例えば厚さ寸法が１ｍｍ以上で３ｍｍ以下（好ましくは１．５ｍｍ）の薄板からなるものである。   Each of the stainless steel plates 37 and 39 is made of a thin plate having a thickness dimension of 1 mm or more and 3 mm or less (preferably 1.5 mm), for example.

固定手段36は、例えば頭部41aおよびねじ軸部41bを有するボルト（固定部材）41と、ねじ軸部41bに螺合可能なナット42とにて構成されている。また、固定手段38は、例えば頭部46aおよびねじ軸部46bを有するボルト（固定部材）46と、ねじ軸部46bに螺合可能なナット47と、ねじ軸部46bの外周に装着可能なワッシャ（スプリングワッシャ）48とにて構成されている。   The fixing means 36 includes, for example, a bolt (fixing member) 41 having a head portion 41a and a screw shaft portion 41b, and a nut 42 that can be screwed to the screw shaft portion 41b. The fixing means 38 includes, for example, a bolt (fixing member) 46 having a head portion 46a and a screw shaft portion 46b, a nut 47 that can be screwed to the screw shaft portion 46b, and a washer that can be attached to the outer periphery of the screw shaft portion 46b. (Spring washer) 48.

なお、土が付着しにくいステンレス鋼板37，39の覆い手段14への固定に用いられた固定部材であるボルト41，46は、例えば極低頭ボルトで、その頭部41a，46aが薄い円板状に形成されている。この頭部41a，46aの厚さ寸法は、ステンレス鋼板37，39の厚さ寸法と同じ（略同じを含む）である。ボルト41，46の頭部41a，46aの中央部には、六角レンチ用の係合凹部50が形成されている。   The bolts 41 and 46, which are fixing members used for fixing the stainless steel plates 37 and 39 to which the soil is difficult to adhere to the covering means 14, are, for example, extremely low head bolts, and the heads 41a and 46a are thin disks. It is formed in a shape. The thickness dimensions of the head portions 41a and 46a are the same (including substantially the same) as the thickness dimensions of the stainless steel plates 37 and 39. An engaging recess 50 for a hexagon wrench is formed at the center of the heads 41a, 46a of the bolts 41, 46.

ここで、まず、図３ないし図６を参照しつつ、整地体25側のステンレス鋼板39について説明する。   Here, first, the stainless steel plate 39 on the leveling body 25 side will be described with reference to FIGS. 3 to 6.

ステンレス鋼板39は、折り返された上端部が固定手段38によって整地体25の整地本体板部31の上下方向中間部の表面31aに解除可能に固定され、かつ、湾曲状に曲げられた断面Ｃ字状の下端部が筒状部分33との嵌合によって整地体25の整地本体板部31の下端部の表面31aに解除可能に固定されている。   The stainless steel plate 39 has a folded upper end portion fixed to the surface 31a of the intermediate portion in the vertical direction of the leveling main body plate portion 31 of the leveling body 25 by a fixing means 38, and is bent in a curved shape. The bottom end of the shape is releasably fixed to the surface 31a of the bottom end of the leveling main body plate portion 31 of the leveling body 25 by fitting with the cylindrical portion 33.

ステンレス鋼板39は、１回の１８０度の折り曲げにより形成された折曲板部51と、この折曲板部51と対向して重なって位置する対向板部52と、これら折曲板部51および対向板部52に形成されたボルト挿入用の孔部53とを、ステンレス鋼板39の上端部に有している。   The stainless steel plate 39 includes a bent plate portion 51 formed by one-time bending of 180 degrees, an opposing plate portion 52 positioned so as to be opposed to the bent plate portion 51, the bent plate portion 51, and A bolt insertion hole 53 formed in the counter plate 52 is provided at the upper end of the stainless steel plate 39.

つまり、ステンレス鋼板39の上端側の端部分が、折曲基端55を中心として裏側（内側）に１８０度折り曲げられて折曲板部51となって、対向板部52と互いに重なり合っている。なお、これら折曲板部51と対向板部52とにて、２重板部54が構成されている。   That is, the end portion on the upper end side of the stainless steel plate 39 is bent 180 degrees toward the back side (inner side) with the bent base end 55 as the center to form a bent plate portion 51 and overlaps the opposing plate portion 52. The bent plate portion 51 and the counter plate portion 52 constitute a double plate portion 54.

また、折曲板部51の上下方向中間部である中央部（略中央部を含む）には、左右方向に間隔をおいて並ぶ円形状（例えば真円形状）の複数の内孔56が整地体25の整地本体板部31の孔部32に連通するように形成されている。この内孔56の径寸法は、円形状の孔部32の径寸法よりも大きく、円板状の頭部46aの径寸法よりも小さい。   In addition, a plurality of circular holes (for example, a perfect circle shape) arranged in the left-right direction at a central portion (including a substantially central portion) that is an intermediate portion in the vertical direction of the bent plate portion 51 are leveled. It is formed so as to communicate with the hole portion 32 of the leveling main body plate portion 31 of the body 25. The diameter of the inner hole 56 is larger than the diameter of the circular hole 32 and smaller than the diameter of the disk-shaped head 46a.

そして、折曲板部51のうち内孔56の周囲に位置する孔周囲部分57が、ボルト46の頭部46aによって、整地本体板部31の表面31aに押し付けられて固定されている。   A hole peripheral portion 57 located around the inner hole 56 in the bent plate portion 51 is pressed and fixed to the surface 31a of the leveling main body plate portion 31 by the head 46a of the bolt 46.

さらに、対向板部52の上下方向中間部である中央部（略中央部を含む）には、左右方向に間隔をおいて並ぶ円形状（例えば楕円形状）の複数の外孔58が折曲板部51の内孔56に連通するように形成されている。この外孔58の径寸法は、ボルト46の頭部46aの径寸法よりも大きい。   Furthermore, a plurality of circular (for example, elliptical) outer holes 58 arranged at intervals in the left-right direction are bent at the central portion (including the substantially central portion) that is the intermediate portion in the vertical direction of the opposing plate portion 52. It is formed so as to communicate with the inner hole 56 of the portion 51. The diameter of the outer hole 58 is larger than the diameter of the head 46a of the bolt 46.

そして、対向板部52の外孔58にボルト46の頭部46aの少なくとも一部、例えば全部が収納されている。つまり、ボルト46は、耕耘手段13側からステンレス鋼板39の孔部53に挿入され、ステンレス鋼板39の耕耘手段13側の面である表面39aから耕耘手段13側へ突出していない。換言すると、ボルト46は、ステンレス鋼板39の表面39aに対して非突出状態となっており、このボルト46の頭部46aの表面がステンレス鋼板39の表面39aと同一面上に位置している。   Then, at least a part, for example, all of the head portion 46a of the bolt 46 is accommodated in the outer hole 58 of the counter plate portion 52. That is, the bolt 46 is inserted into the hole 53 of the stainless steel plate 39 from the tillage means 13 side and does not protrude from the surface 39a of the stainless steel plate 39 on the tillage means 13 side to the tillage means 13 side. In other words, the bolt 46 is in a non-projecting state with respect to the surface 39a of the stainless steel plate 39, and the surface of the head 46a of the bolt 46 is located on the same plane as the surface 39a of the stainless steel plate 39.

なお、ボルト挿入用の孔部53は、折曲板部51の内孔56と、対向板部52の外孔58とにて構成されている。また、整地体25の整地本体板部31の表面31aとステンレス鋼板39の耕耘手段13側とは反対側の面である裏面39bとの間には、耕耘整地作業時にステンレス鋼板39の振動を許容する隙間60が、ステンレス鋼板39の上下端部以外の部分（上下の固定部を除く部分）にわたって存在している。   The bolt insertion hole 53 is constituted by an inner hole 56 of the bent plate part 51 and an outer hole 58 of the counter plate part 52. Further, the vibration of the stainless steel plate 39 is allowed between the surface 31a of the leveling main body plate portion 31 of the leveling body 25 and the back surface 39b of the stainless steel plate 39 opposite to the tillage means 13 side during the tilling work. The gap 60 is present over portions other than the upper and lower end portions of the stainless steel plate 39 (portions excluding the upper and lower fixing portions).

次いで、図２を参照しつつ、カバー体23側のステンレス鋼板37について説明する。   Next, the stainless steel plate 37 on the cover body 23 side will be described with reference to FIG.

ステンレス鋼板37は、折り返された前端部が固定手段36によってカバー体23のカバー本体板部27の前端部の表面27aに解除可能に固定され、かつ、折り返された後端部が固定手段36によってカバー体23のカバー本体板部27の後端部の表面27aに解除可能に固定されている。   The stainless steel plate 37 is releasably fixed to the surface 27a of the front end portion of the cover body plate portion 27 of the cover body 23 by the fixing means 36, and the folded back rear end portion is fixed by the fixing means 36. The cover body 23 is releasably fixed to the surface 27a of the rear end portion of the cover body plate portion 27.

このステンレス鋼板37は、上述した整地体25側のステンレス鋼板39と同様、１回の１８０度の折り曲げにより形成された折曲板部61と、この折曲板部61と対向して重なって位置する対向板部62と、これら折曲板部61および対向板部62に形成されたボルト挿入用の孔部63とを、ステンレス鋼板37の前後端部に有している。   Like the stainless steel plate 39 on the leveling body 25 side, the stainless steel plate 37 is positioned so as to be opposed to the bent plate portion 61 formed by one-time bending of 180 degrees and the bent plate portion 61. The opposing plate portion 62 and the bent plate portion 61 and the bolt insertion hole 63 formed in the opposing plate portion 62 are provided at the front and rear end portions of the stainless steel plate 37.

つまり、ステンレス鋼板37の前端側および後端側の各端部分が、折曲基端65を中心として裏側に１８０度折り曲げられて折曲板部61となって、対向板部62と互いに重なり合っている。なお、これら折曲板部61と対向板部62とにて、２重板部64が構成されている。   That is, the front end side and the rear end side end portion of the stainless steel plate 37 are bent 180 degrees on the back side with the bent base end 65 as the center to form a bent plate portion 61 and overlap each other with the opposing plate portion 62. Yes. The bent plate portion 61 and the counter plate portion 62 constitute a double plate portion 64.

また、各折曲板部61の前後方向中間部には、左右方向に間隔をおいて並ぶ円形状（例えば真円形状）の複数の内孔66がカバー体23のカバー本体板部27の孔部28に連通するように形成されている。この内孔66の径寸法は、円形状の孔部28の径寸法よりも大きく、円板状の頭部41aの径寸法よりも小さい。   In addition, a plurality of circular holes (for example, perfect circle shapes) arranged in the front-rear direction intermediate portion of each bent plate portion 61 at intervals in the left-right direction are provided in the holes of the cover body plate portion 27 of the cover body 23. It is formed so as to communicate with the portion 28. The diameter of the inner hole 66 is larger than the diameter of the circular hole 28 and smaller than the diameter of the disk-shaped head 41a.

そして、折曲板部61のうち内孔66の周囲に位置する孔周囲部分67が、ボルト41の頭部41aによって、カバー本体板部27の表面27aに押し付けられて固定されている。   A hole peripheral portion 67 located around the inner hole 66 in the bent plate portion 61 is pressed against and fixed to the surface 27a of the cover main body plate portion 27 by the head portion 41a of the bolt 41.

さらに、各対向板部62の前後方向中間部には、左右方向に間隔をおいて並ぶ円形状（例えば楕円形状）の複数の外孔68が折曲板部61の内孔66に連通するように形成されている。この外孔68の径寸法は、ボルト41の頭部41aの径寸法よりも大きい。   Furthermore, a plurality of circular (for example, elliptical) outer holes 68 arranged at intervals in the left-right direction are communicated with the inner holes 66 of the bent plate part 61 at the middle part in the front-rear direction of each counter plate part 62. Is formed. The diameter of the outer hole 68 is larger than the diameter of the head 41a of the bolt 41.

そして、対向板部62の外孔68にボルト41の頭部41aの少なくとも一部、例えば全部が収納されている。つまり、ボルト41は、上述したボルト46と同様、耕耘手段13側からステンレス鋼板37の孔部63に挿入され、ステンレス鋼板37の耕耘手段13側の面である表面37aから耕耘手段13側へ突出していない。換言すると、ボルト41は、ステンレス鋼板37の表面37aに対して非突出状態となっており、このボルト41の頭部41aの表面はステンレス鋼板37の表面37aと同一面上に位置している。なお、ボルト挿入用の孔部63は、折曲板部61の内孔66と、対向板部62の外孔68とにて構成されている。   Then, at least a part, for example, all of the head 41a of the bolt 41 is accommodated in the outer hole 68 of the opposing plate part 62. That is, the bolt 41 is inserted into the hole 63 of the stainless steel plate 37 from the tillage means 13 side, like the bolt 46 described above, and protrudes from the surface 37a which is the surface of the stainless steel plate 37 on the tillage means 13 side to the tillage means 13 side. Not. In other words, the bolt 41 is in a non-projecting state with respect to the surface 37a of the stainless steel plate 37, and the surface of the head 41a of the bolt 41 is located on the same plane as the surface 37a of the stainless steel plate 37. The bolt insertion hole 63 includes an inner hole 66 of the bent plate portion 61 and an outer hole 68 of the counter plate portion 62.

また、図１に示されるように、機体12と整地体25との間には、整地体25の接地圧を調整可能な接地圧調整手段69が架設されている。機体12の前部には、耕耘手段13の耕耘深さを調整可能なゲージ輪手段70が設けられている。   Further, as shown in FIG. 1, a ground pressure adjusting means 69 capable of adjusting the ground pressure of the leveling body 25 is installed between the machine body 12 and the leveling body 25. Gauge wheel means 70 capable of adjusting the tilling depth of the tilling means 13 is provided at the front of the machine body 12.

次に、農作業機11の作用等を説明する。   Next, the operation of the agricultural machine 11 will be described.

トラクタの前進走行によって農作業機11が進行方向（前方）に移動すると、耕耘手段13が所定方向に回転しながら耕耘作業をし、この耕耘手段13の後方では、覆い手段14の整地体25が整地作業をする。   When the agricultural implement 11 is moved in the traveling direction (forward) by the forward traveling of the tractor, the tilling means 13 performs the tilling work while rotating in a predetermined direction, and the ground leveling body 25 of the covering means 14 is grounded behind the tilling means 13. Work.

このとき、カバー体23のカバー本体板部27の表面27aの全体がステンレス鋼板37によって覆われているため、その表面27aには土は付着しない。また、整地体25の整地本体板部31の表面31aの下部がステンレス鋼板39によって覆われているため、その表面31aの下部には土は付着しない。   At this time, since the entire surface 27a of the cover main body plate portion 27 of the cover body 23 is covered with the stainless steel plate 37, soil does not adhere to the surface 27a. Moreover, since the lower part of the surface 31a of the leveling main body plate part 31 of the leveling body 25 is covered with the stainless steel plate 39, no soil adheres to the lower part of the surface 31a.

また、例えば図７に示すように、耕耘手段13によって耕耘された土が、ステンレス鋼板39の上端部と整地体25の整地本体板部31との間に形成された段差部分に付着して成長した場合には、作業者は、ステンレス鋼板39の表面39aおよび整地本体板部31の表面31aにわたって付着した土を、鎌等の道具（土落とし具）７を用いて除去する。   For example, as shown in FIG. 7, the soil cultivated by the cultivating means 13 adheres to a step portion formed between the upper end portion of the stainless steel plate 39 and the leveling main body plate portion 31 of the leveling body 25 and grows. In this case, the operator removes the soil adhering over the surface 39a of the stainless steel plate 39 and the surface 31a of the leveling main plate 31 using a tool (soil dropping tool) 7 such as a sickle.

この際、ボルト46の頭部46aは、ステンレス鋼板39の孔部53に収納された状態で、ステンレス鋼板39の表面39aから突出していないため、道具７の先端がボルト46の頭部46aに当たらず、ボルト46が土除去作業の邪魔になることはない。   At this time, since the head 46a of the bolt 46 is housed in the hole 53 of the stainless steel plate 39 and does not protrude from the surface 39a of the stainless steel plate 39, if the tip of the tool 7 hits the head 46a of the bolt 46, Therefore, the bolt 46 does not interfere with the soil removal work.

なお、例えば土がカバー体23側のステンレス鋼板37に付着した場合であっても同様に、ボルト41の頭部41aは、ステンレス鋼板37の孔部63に収納された状態で、ステンレス鋼板37の表面37aから突出していないため、道具７の先端がボルト41の頭部41aに当たらず、ボルト41が土除去作業の邪魔になることはない。   For example, even when soil adheres to the stainless steel plate 37 on the cover body 23 side, similarly, the head 41a of the bolt 41 is stored in the hole 63 of the stainless steel plate 37, and the stainless steel plate 37 Since it does not protrude from the surface 37a, the tip of the tool 7 does not hit the head 41a of the bolt 41, and the bolt 41 does not interfere with the soil removal operation.

そして、このような農作業機11によれば、ボルト41，46がステンレス鋼板37，39の耕耘手段13側の面から突出していないので、ボルト41，46およびステンレス鋼板37，39等への土の付着を抑制できる。   And according to such a farming machine 11, since the bolts 41 and 46 do not protrude from the surface of the stainless steel plates 37 and 39 on the side of the tillage means 13, the soil to the bolts 41 and 46 and the stainless steel plates 37 and 39, etc. Adhesion can be suppressed.

また、耕耘手段13にて耕耘された土がステンレス鋼板37，39の耕耘手段13側の面に付着しても、ボルト41，46が土除去作業の邪魔にならず、土除去作業を容易に行うことができる。   Moreover, even if the soil cultivated by the cultivating means 13 adheres to the surface of the stainless steel plates 37, 39 on the cultivating means 13 side, the bolts 41, 46 do not interfere with the soil removing work, and the soil removing work is easy. It can be carried out.

さらに、整地体25とステンレス鋼板39との間にはステンレス鋼板39の振動を許容する隙間60が存在するため、耕耘整地作業時に、小石等がステンレス鋼板39が当たるとその衝撃でステンレス鋼板39が振動し、よって土の付着をより一層適切に抑制できる。   Furthermore, since there is a gap 60 that allows the stainless steel plate 39 to vibrate between the leveling body 25 and the stainless steel plate 39, when the pebbles hit the stainless steel plate 39 during the tilling work, the stainless steel plate 39 is affected by the impact. Therefore, the adhesion of soil can be more appropriately suppressed.

次に、本発明の第２の実施の形態について図８および図９を参照して説明する。   Next, a second embodiment of the present invention will be described with reference to FIGS.

この第２の実施の形態では、整地体25側のステンレス鋼板39の折曲板部51は、複数回、例えば２回の１８０度の折り曲げにより形成されている。つまり、この折曲板部51は、互いに重なった２重の第１板71および第２板72にて構成されている。   In the second embodiment, the bent plate portion 51 of the stainless steel plate 39 on the leveling body 25 side is formed by a plurality of, for example, two 180 degree bendings. In other words, the bent plate portion 51 is composed of a double first plate 71 and a second plate 72 that overlap each other.

折曲板部51の第１板71には、左右方向に間隔をおいて並ぶ円形状の複数の第１内孔73が形成されている。この第１内孔73の径寸法は、整地本体板部31の孔部32の径寸法よりも大きく、ボルト46の頭部46aの径寸法よりも小さい。そして、折曲板部51の第１板71のうち第１内孔73の周囲に位置する孔周囲部分74が、ボルト46の頭部46aによって、整地本体板部31の表面31aに押し付けられて固定されている。   The first plate 71 of the bent plate portion 51 is formed with a plurality of circular first inner holes 73 arranged at intervals in the left-right direction. The diameter of the first inner hole 73 is larger than the diameter of the hole 32 of the leveling main plate 31 and smaller than the diameter of the head 46a of the bolt 46. Then, the hole peripheral portion 74 located around the first inner hole 73 in the first plate 71 of the bent plate portion 51 is pressed against the surface 31a of the leveling main body plate portion 31 by the head 46a of the bolt 46. It is fixed.

また、折曲板部51の第２板72には、左右方向に間隔をおいて並ぶ円形状の複数の第２内孔75が形成されている。この第２内孔75の径寸法は、対向板部52の外孔58と同じ径寸法で、ボルト46の頭部46aの径寸法よりも大きい。なお、第１内孔73と第２内孔75とにて、折曲板部51の内孔56が構成されている。   The second plate 72 of the bent plate portion 51 is formed with a plurality of circular second inner holes 75 arranged in the left-right direction at intervals. The diameter of the second inner hole 75 is the same as that of the outer hole 58 of the opposing plate portion 52 and is larger than the diameter of the head 46a of the bolt 46. The first inner hole 73 and the second inner hole 75 constitute an inner hole 56 of the bent plate portion 51.

そして、折曲板部51の第２板72の第２内孔75にボルト46の頭部46aの少なくとも一部、例えば全部が収納されている。つまり、ボルト46は、耕耘手段13側からステンレス鋼板39の孔部53に挿入され、ステンレス鋼板39の耕耘手段13側の面である表面39aから耕耘手段13側へ突出していない。   At least a part, for example, all of the head 46a of the bolt 46 is accommodated in the second inner hole 75 of the second plate 72 of the bent plate part 51. That is, the bolt 46 is inserted into the hole 53 of the stainless steel plate 39 from the tillage means 13 side and does not protrude from the surface 39a of the stainless steel plate 39 on the tillage means 13 side to the tillage means 13 side.

なお、例えば図示しないが、カバー体23側のステンレス鋼板37についても同様に、折曲板部61を複数回（例えば２回）の１８０度の折り曲げにより形成してもよい。また、ステンレス鋼板37，39の折り曲げの回数は、例えば３回以上でもよい。   For example, although not shown, the bent plate portion 61 may be similarly formed on the stainless steel plate 37 on the cover body 23 side by bending 180 degrees a plurality of times (for example, twice). Further, the number of times the stainless steel plates 37 and 39 are bent may be three times or more, for example.

次に、本発明の第３の実施の形態について図１０および図１１を参照して説明する。   Next, a third embodiment of the present invention will be described with reference to FIGS.

この第３の実施の形態では、整地体25側のステンレス鋼板39の対向板部52は、底側が折曲板部51の内孔56に位置するように凹設された円形状の凹状部分81を有し、この凹状部分81に外孔58が形成されている。   In the third embodiment, the counter plate portion 52 of the stainless steel plate 39 on the leveling body 25 side has a circular concave portion 81 that is recessed so that the bottom side is located in the inner hole 56 of the bent plate portion 51. And an outer hole 58 is formed in the concave portion 81.

そして、凹状部分81のうち外孔58の周囲に位置する孔周囲部分82が、ボルト46の頭部46aによって、整地本体板部31の表面31aに押し付けられて固定されている。   A hole peripheral portion 82 positioned around the outer hole 58 in the concave portion 81 is pressed and fixed to the surface 31a of the leveling main body plate portion 31 by the head 46a of the bolt 46.

また、ボルト挿入用の孔部53は、折曲板部51の内孔56と、対向板部52の外孔58と、対向板部52の凹状部分81の内側空間81aとにて構成されている。   The bolt insertion hole 53 includes an inner hole 56 of the bent plate portion 51, an outer hole 58 of the opposing plate portion 52, and an inner space 81a of the concave portion 81 of the opposing plate portion 52. Yes.

そして、対向板部52の凹状部分81の内側空間81aにボルト46の頭部46aの少なくとも一部、例えば全部が収納されている。つまり、ボルト46は、耕耘手段13側からステンレス鋼板39の孔部53に挿入され、ステンレス鋼板39の耕耘手段13側の面である表面39aから耕耘手段13側へ突出していない。   In addition, at least a part, for example, all of the head portion 46a of the bolt 46 is accommodated in the inner space 81a of the concave portion 81 of the opposing plate portion 52. That is, the bolt 46 is inserted into the hole 53 of the stainless steel plate 39 from the tillage means 13 side and does not protrude from the surface 39a of the stainless steel plate 39 on the tillage means 13 side to the tillage means 13 side.

なお、例えば図示しないが、カバー体23側のステンレス鋼板37についても同様に、対向板部62が、外孔68を形成した凹状部分81を有するようにしてもよい。また、ボルト41，46の頭部41a，46aと対向板部52，62の凹状部分81とが互いに嵌合するようにしてもよい。   For example, the stainless steel plate 37 on the cover body 23 side may have a concave portion 81 in which the outer plate 68 is formed in the counter plate portion 62 as well. Further, the head portions 41a, 46a of the bolts 41, 46 and the concave portions 81 of the opposing plate portions 52, 62 may be fitted to each other.

次に、本発明の第４の実施の形態について図１２および図１３を参照して説明する。   Next, a fourth embodiment of the present invention will be described with reference to FIGS.

この第４の実施の形態では、ステンレス鋼板39を整地体25に固定する固定部材として、皿ボルトからなるボルト46が用いられ、このボルト46の頭部46aが截頭円錐形状に形成されている。また、折曲板部51のうち内孔56に臨んだ面である支持面85が、ボルト46の頭部46aに対応して截頭円錐面状に形成されている。   In the fourth embodiment, a bolt 46 made of a countersunk bolt is used as a fixing member for fixing the stainless steel plate 39 to the leveling body 25, and a head 46a of the bolt 46 is formed in a truncated cone shape. . Further, a support surface 85 which is a surface facing the inner hole 56 in the bent plate portion 51 is formed in a truncated conical shape corresponding to the head portion 46a of the bolt 46.

そして、ボルト（皿ボルト）46の頭部46aの一部が、ステンレス鋼板39の孔部53に収納され、折曲板部51のテーパ状の支持面85によって支持されている。つまり、ボルト46は、耕耘手段13側からステンレス鋼板39の孔部53に挿入され、ステンレス鋼板39の耕耘手段13側の面である表面39aから耕耘手段13側へ突出していない。   A part of the head portion 46 a of the bolt (counter bolt) 46 is accommodated in the hole 53 of the stainless steel plate 39 and supported by the tapered support surface 85 of the bent plate portion 51. That is, the bolt 46 is inserted into the hole 53 of the stainless steel plate 39 from the tillage means 13 side and does not protrude from the surface 39a of the stainless steel plate 39 on the tillage means 13 side to the tillage means 13 side.

なお、例えば図示しないが、カバー体23側のステンレス鋼板37についても同様にして、皿ボルトからなるボルト41でステンレス鋼板37をカバー体23に固定してもよい。また、対向板部52のうち外孔58に臨んだ面（支持面）をボルト46の頭部46aに対応して截頭円錐面状に形成してもよい。   For example, although not shown, the stainless steel plate 37 on the cover body 23 side may be similarly fixed to the cover body 23 with a bolt 41 made of a countersunk bolt. Further, the surface (support surface) of the counter plate portion 52 facing the outer hole 58 may be formed in a truncated conical shape corresponding to the head 46a of the bolt 46.

次に、本発明の第５の実施の形態について図１４および図１５を参照して説明する。   Next, a fifth embodiment of the present invention will be described with reference to FIGS.

前記第４の実施の形態では、内側の板である折曲板部51にサグリ加工を施して皿ボルトで固定する構成について説明したが、第５の実施の形態のように、孔部32の大きさを調整して皿ボルトで固定する構成でもよい。なお、例えば図示しないが、カバー体23側のステンレス鋼板37についても同様にしてもよい。   In the fourth embodiment, the configuration is described in which the bent plate portion 51 that is the inner plate is subjected to sagging and is fixed with a countersunk bolt. However, as in the fifth embodiment, the holes 32 The structure which adjusts a magnitude | size and fixes with a flat head bolt may be sufficient. For example, although not shown, the same may be applied to the stainless steel plate 37 on the cover body 23 side.

次に、本発明の第６の実施の形態について図１６および図１７を参照して説明する。   Next, a sixth embodiment of the present invention will be described with reference to FIGS.

この第６の実施の形態では、整地体25側のステンレス鋼板39の上端側の端部分が、折曲基端55を中心として表側（外側）に１８０度折り曲げられて折曲板部51となって、対向板部52と互いに重なり合っている。つまり、前記第１の実施の形態等とは、折曲板部51の折り曲げる側が逆であり、このため、内孔56が対向板部52に形成され、外孔58が折曲板部51に形成されている。   In this sixth embodiment, the end portion on the upper end side of the stainless steel plate 39 on the leveling body 25 side is bent 180 degrees toward the front side (outside) with the bent base end 55 as the center to form the bent plate portion 51. Thus, the counter plate portion 52 and the counter plate portion 52 overlap each other. In other words, the folding side of the bent plate portion 51 is opposite to that of the first embodiment, and therefore, the inner hole 56 is formed in the opposing plate portion 52 and the outer hole 58 is formed in the bent plate portion 51. Is formed.

そして、対向板部52のうち内孔56の周囲に位置する孔周囲部分57が、ボルト46の頭部46aによって、整地本体板部31の表面31aに押し付けられて固定されている。   A hole peripheral portion 57 located around the inner hole 56 in the counter plate portion 52 is pressed against and fixed to the surface 31a of the leveling main body plate portion 31 by the head 46a of the bolt 46.

また、折曲板部51の外孔58にボルト46の頭部46aの少なくとも一部、例えば全部が収納されている。つまりこの第６の実施の形態であっても、ボルト46は、耕耘手段13側からステンレス鋼板39の孔部53に挿入され、ステンレス鋼板39の耕耘手段13側の面である表面39aから耕耘手段13側へ突出していない。   Further, at least a part, for example, all of the head 46a of the bolt 46 is accommodated in the outer hole 58 of the bent plate part 51. That is, even in the sixth embodiment, the bolt 46 is inserted into the hole 53 of the stainless steel plate 39 from the tillage means 13 side, and the tillage means from the surface 39a that is the surface of the stainless steel plate 39 on the tillage means 13 side. It does not protrude to the 13 side.

なお、折曲板部51の下端部は、対向板部52の下端部近傍に溶接部86によって固定されており、この溶接部86は、段差解消のために、その表面が傾斜面状に形成されている。また、この第６の実施の形態では、整地本体板部31の表面31aとステンレス鋼板39の裏面39bとの間に振動許容用の隙間60が存在していない。なお、例えば図示しないが、カバー体23側のステンレス鋼板37についても同様にしてもよい。   The lower end portion of the bent plate portion 51 is fixed in the vicinity of the lower end portion of the opposing plate portion 52 by a welded portion 86, and the surface of the welded portion 86 is formed in an inclined surface to eliminate the step. Has been. Further, in the sixth embodiment, there is no vibration allowing gap 60 between the front surface 31a of the leveling main body plate portion 31 and the back surface 39b of the stainless steel plate 39. For example, although not shown, the same may be applied to the stainless steel plate 37 on the cover body 23 side.

なお、上記いずれの実施の形態においても、土付着防止部材は、ステンレス鋼板に限定されず、例えば合成樹脂板や、弾性変形可能な弾性板等でもよい。   In any of the above embodiments, the soil adhesion preventing member is not limited to a stainless steel plate, and may be, for example, a synthetic resin plate or an elastic plate that can be elastically deformed.

また、土付着防止部材を固定するための固定部材であるボルトは、極低頭ボルトや皿ボルトに限定されず、例えば通常の六角ボルト等でもよく、また同様に、ボルトに螺合するナットも任意で、袋ナット等でもよい。   Further, the bolt that is a fixing member for fixing the soil adhesion preventing member is not limited to an extremely low head bolt or a countersunk bolt, and may be, for example, a normal hexagon bolt or the like, and similarly, a nut that is screwed to the bolt is also used. Optionally, a cap nut or the like may be used.

なお、固定部材（例えばボルト）が土付着防止部材の耕耘手段側の面から「突出していない」とは、厳密な意味で突出していない場合のほか、略突出していない場合を含む意味である。すなわち、土付着防止部材の耕耘手段側の面からのボルト頭部の突出量が例えば１ｍｍ未満であれば、「突出していない」（土付着防止部材の耕耘手段側の面に対する非突出状態）に含まれる。   It should be noted that the phrase “does not protrude” from the surface on the side of the tillage means of the soil adhesion preventing member means that the fixing member (for example, a bolt) includes not only a case where it does not protrude but also a case where it does not substantially protrude. That is, if the protruding amount of the bolt head from the surface of the soil adhesion preventing member on the tillage means side is, for example, less than 1 mm, it is “not projecting” (non-projecting state with respect to the surface of the soil adhesion preventing member on the tillage means side). included.

さらに、例えばカバー体23のカバー本体板部27の表面27aとステンレス鋼板37の耕耘手段13側とは反対側の面である裏面37bとの間に、耕耘整地作業時にステンレス鋼板37の振動を許容する隙間が、ステンレス鋼板37の前後端部以外の部分（前後の固定部を除く部分）にわたって存在する構成等でもよい。   Further, for example, the vibration of the stainless steel plate 37 is allowed between the surface 27a of the cover body plate portion 27 of the cover body 23 and the back surface 37b of the stainless steel plate 37 opposite to the cultivation means 13 side during the tilling work. The structure etc. which exist over the part (part except the front and rear fixed part) other than the front-and-rear end part of the stainless steel plate 37 may be sufficient.

なお、本発明のいくつかの実施の形態およびその変形例について説明したが、本発明の要旨を逸脱しない範囲で、前記各実施の形態および各変形例を適宜組み合わせることも可能である。   Although several embodiments of the present invention and modifications thereof have been described, the above-described embodiments and modifications can be appropriately combined without departing from the gist of the present invention.

11 農作業機
13 耕耘手段
14 覆い手段
37，39 土付着防止部材であるステンレス鋼板
41，46 固定部材であるボルト
41a，46a ボルトの頭部
51，61 折曲板部
52，62 対向板部
53，63 孔部
60 隙間 11 Agricultural machines
13 Tillage means
14 Covering means
37, 39 Stainless steel plate as a soil adhesion prevention member
41, 46 Bolt as a fixing member
41a, 46a Bolt head
51, 61 Bent plate
52, 62 Opposite plate
53, 63 hole
60 Clearance

Claims (4)

耕耘作業をする耕耘手段と、
この耕耘手段を覆う覆い手段と、
この覆い手段に固定された土付着防止部材と、
この土付着防止部材の固定に用いられた固定部材とを備え、
前記土付着防止部材は、
折り曲げにより形成された折曲板部と、
この折曲板部と対向して位置する対向板部と、
前記折曲板部および前記対向板部に形成された孔部とを有し、
前記固定部材は、前記土付着防止部材の前記孔部に挿入され、前記土付着防止部材の前記耕耘手段側の面から突出していない
ことを特徴とする農作業機。 Tillage means for plowing work,
Covering means for covering the tillage means;
A soil adhesion preventing member fixed to the covering means;
A fixing member used for fixing the soil adhesion preventing member,
The soil adhesion preventing member is
A bent plate portion formed by bending;
A counter plate portion positioned opposite to the bent plate portion;
A hole formed in the bent plate portion and the counter plate portion,
The agricultural machine according to claim 1, wherein the fixing member is inserted into the hole of the soil adhesion preventing member and does not protrude from the surface of the soil adhesion preventing member on the side of the tillage means. 覆い手段と土付着防止部材との間には、前記土付着防止部材の振動を許容する隙間が存在する
ことを特徴とする請求項１記載の農作業機。 The agricultural working machine according to claim 1, wherein a gap allowing vibration of the soil adhesion preventing member is present between the covering means and the soil adhesion preventing member. 固定部材は、頭部を有するボルトであり、
前記ボルトの前記頭部の少なくとも一部が、土付着防止部材の孔部に収納されている
ことを特徴とする請求項１または２記載の農作業機。 The fixing member is a bolt having a head,
The agricultural working machine according to claim 1 or 2, wherein at least a part of the head of the bolt is housed in a hole of the soil adhesion preventing member. ボルトの頭部の表面が、土付着防止部材の耕耘手段側の面と同一面上に位置する
ことを特徴とする請求項３記載の農作業機。 The agricultural machine according to claim 3, wherein the surface of the head of the bolt is located on the same plane as the surface of the soil adhesion preventing member on the side of the tillage means.
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