JP6242007B2 - Agricultural machine - Google Patents

Agricultural machine Download PDF

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JP6242007B2
JP6242007B2 JP2014126213A JP2014126213A JP6242007B2 JP 6242007 B2 JP6242007 B2 JP 6242007B2 JP 2014126213 A JP2014126213 A JP 2014126213A JP 2014126213 A JP2014126213 A JP 2014126213A JP 6242007 B2 JP6242007 B2 JP 6242007B2
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tillage
guard
plate portion
plate
work
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JP2016002061A (en
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壮将 山宮
壮将 山宮
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松山株式会社
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Description

本発明は、適切な耕耘整地作業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 perform appropriate tillage work.

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、トラクタ等の走行車の後部に連結される機体と、この機体に回転可能に設けられ耕耘作業をする耕耘体と、この耕耘体の後方で整地作業をする整地体と、耕耘体の上方部を覆う耕耘カバー体と、機体の耕耘体支持部であるチェンケース部を覆って保護するガード体とを備えている。   This conventional agricultural machine includes a machine body connected to the rear part of a traveling vehicle such as a tractor, a tiller body that is rotatably provided on the machine body and performs a tilling work, and a leveling body that performs a ground leveling work behind the farm body. A tiller cover body that covers the upper part of the tillage body, and a guard body that covers and protects the chain case portion that is the tiller body support portion of the machine body.

特開平11−9004号公報Japanese Patent Laid-Open No. 11-9004

しかしながら、上記従来の農作業機では、機体のチェンケース部による残耕が生じるため、適切な耕耘整地作業ができないおそれがある。   However, in the conventional agricultural machine described above, residual tilling by the chain case part of the machine body occurs, so there is a possibility that proper tillage work cannot be performed.

本発明は、このような点に鑑みなされたもので、適切な耕耘整地作業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 perform suitable tillage work.

請求項1記載の農作業機は、耕耘体支持部を有する機体と、前記耕耘体支持部にて支持され、耕耘作業をする耕耘体と、この耕耘体の後方で整地作業をする整地体と、前記耕耘体の上方部を覆う耕耘カバー体と、前記耕耘体支持部を覆って保護するとともに、土を耕耘体側に向けて案内するガード体とを備え、前記ガード体は、前記耕耘体支持部の前面を覆って保護する前下がり傾斜状の傾斜上板部を上面部に有するものである。 The agricultural working machine according to claim 1, a machine body having a tillage body support portion, a tillage body that is supported by the tillage body support portion and performs a tillage work, and a leveling body that performs a leveling work behind the tillage body, The tiller cover body that covers the upper portion of the tillage body, and the guard body that covers and protects the tillage body support portion and guides the soil toward the tillage body side, and the guard body includes the tillage body support portion. The upper surface portion has an inclined upper plate portion that is inclined forwardly and covers and protects the front surface .

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、ガード体の傾斜上板部の幅寸法は、耕耘体支持部の幅寸法と同一寸法であるものである。The farm machine according to claim 2 is the farm machine according to claim 1, wherein the width of the inclined upper plate part of the guard body is the same as the width of the tiller support part.

請求項3記載の農作業機は、耕耘体支持部を有する機体と、前記耕耘体支持部にて支持され、耕耘作業をする耕耘体と、この耕耘体の後方で整地作業をする整地体と、前下がり傾斜状の傾斜板部を有し、前記耕耘体の上方部を覆う耕耘カバー体と、前下がり傾斜状の傾斜上板部を有し、前記耕耘体支持部を覆って保護するとともに、土を耕耘体側に向けて案内するガード体とを備え、前記ガード体の前記傾斜上板部と前記耕耘カバー体の前記傾斜板部とが同一面上に位置し、側面視で、前記ガード体の前記傾斜上板部と前記耕耘カバー体の前記傾斜板部とが重なり合うものである。 The agricultural working machine according to claim 3, a machine body having a tillage body support portion, a tillage body supported by the tillage body support portion and performing a tilling work, a leveling body performing a leveling work behind the tillage body, It has a tilting plate part that is inclined forward and has a tilling cover body that covers the upper part of the tillage body, an inclined upper plate part that is tilted forward and tilted, covers and protects the tilling body support part, and and a guard member for guiding towards the soil tillage side, and the inclined plate portion of the tiller cover body and the inclined upper portion of the guard member is positioned on the same plane, as viewed from the side, the guard member wherein an inclined plate portion and the inclined upper portion of the of the tillage cover in which overlap.

請求項4記載の農作業機は、請求項1ないし3のいずれか一記載の農作業機において、耕耘体支持部は、機体の外端部に位置するチェーンケース部であるものである。   The agricultural machine according to claim 4 is the agricultural machine according to any one of claims 1 to 3, wherein the cultivator support part is a chain case part positioned at an outer end part of the machine body.

本発明によれば、ガード体が機体の耕耘体支持部を覆って保護するとともに土を耕耘体側に向けて案内するため、適切な耕耘作業ができ、しかも、ガード体は前下がり傾斜状の傾斜上板部を有するため、稲わら等の夾雑物や土がガード体上に溜まるのを抑制できる。   According to the present invention, the guard body covers and protects the cultivating body support portion of the airframe and guides the soil toward the cultivating body side, so that an appropriate tillage operation can be performed, and the guard body is inclined forwardly and downwardly. Since it has an upper board part, it can control that impurities and soil, such as rice straw, accumulate on a guard body.

本発明の一実施の形態に係る農作業機の部分斜視図である。It is a fragmentary perspective view of the agricultural working machine which concerns on one 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. 同上農作業機のカバー体の側面視断面図である。It is side view sectional drawing of the cover body of an agricultural working machine same as the above. 同上農作業機の全体背面図である。It is a whole rear view of an agricultural working machine same as the above. 同上農作業機のガード体の正面図である。It is a front view of the guard body of a farm working machine same as the above. 同上農作業機のガード体の底面図である。It is a bottom view of the guard body of a farm working machine same as the above. 同上農作業機のガード体の外側面図である。It is an outer side view of the guard body of a farm working machine same as the above. 同上農作業機のガード体の内側面図である。It is an inner side view of the guard body of a farm working machine same as the above.

本発明の一実施の形態について図1ないし図8を参照して説明する。   An embodiment of the present invention will be described with reference to FIGS.

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上を前方(進行方向)に移動しながら農作業である耕耘整地作業等を行うものである。   In the figure, reference numeral 1 denotes an agricultural machine. The agricultural machine 1 is connected to the rear part of a tractor (not shown), which is a traveling vehicle, for example, and is moved forward (in the direction of travel) on the field by traveling the tractor. The plowing and leveling work is performed.

農作業機1は、図4に示されるように、例えば3分割の折畳式農作業機で、トラクタの後部に脱着可能に連結される中央作業部2と、この中央作業部2の左右方向両端部に回動支点3を中心として上下方向に回動可能に設けられた左右1対の延長作業部4と、この延長作業部4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油圧シリンダ5とを備えている。   As shown in FIG. 4, the farm work machine 1 is, for example, a three-fold foldable farm work machine, and a central work part 2 that is detachably connected to the rear part of the tractor, and both right and left ends of the central work part 2 And a pair of left and right extension working parts 4 provided so as to be pivotable in the vertical direction around the pivot fulcrum 3, and a pivot drive means for pivoting the extension work part 4 relative to the central work part 2. And a hydraulic cylinder 5.

両延長作業部4は、左右対称の構成のもので、油圧シリンダ5の伸縮に応じて中央作業部2に対して回動支点3を中心として回動する。つまり、両延長作業部4は、油圧シリンダ5の伸び動作に基づく展開方向への回動により、中央作業部2の外側方に位置する展開作業状態となる。また、両延長作業部4は、油圧シリンダ5の縮み動作に基づく折畳方向への回動により、中央作業部2の上方に位置する折畳非作業状態となる。   Both extension working parts 4 have a symmetrical configuration, and rotate around the pivot point 3 with respect to the central working part 2 according to the expansion and contraction of the hydraulic cylinder 5. That is, both the extension working parts 4 are in a deployment work state located on the outer side of the central work part 2 by rotation in the deployment direction based on the extension operation of the hydraulic cylinder 5. Further, both the extension working parts 4 are in a folding non-working state located above the central working part 2 by turning in the folding direction based on the contraction operation of the hydraulic cylinder 5.

そして、農作業機1は、中央作業部2および左右1対の両延長作業部4が耕耘整地作業をする状態と、中央作業部2および左右いずれか一方の延長作業部4が耕耘整地作業をする状態と、中央作業部2のみが耕耘整地作業をする状態とに選択的に切り換え可能となっている。   In the agricultural machine 1, the central working unit 2 and the pair of left and right extension working units 4 perform the tilling work, and the central working unit 2 and the left and right extending working parts 4 perform the tilling work. It is possible to selectively switch between the state and the state in which only the central working unit 2 performs the tilling work.

中央作業部2は、トラクタの後部の3点リンク部(農作業機昇降部)に脱着可能に連結されるトラクタ連結機体である中央機体11と、この中央機体11にて回転可能に支持され、所定の回転方向に回転しながら耕耘作業をする中央耕耘体(図示せず)と、この中央耕耘体の後方で整地作業をする中央整地体12とを備えている。   The central working unit 2 is a tractor connecting machine body 11 that is detachably connected to a three-point link part (agricultural machine lifting unit) at the rear of the tractor, and is supported by the central machine body 11 so as to be rotatable. A central tilling body (not shown) that performs the tilling work while rotating in the rotation direction, and a central leveling body 12 that performs the leveling work behind the central tilling body.

また、中央作業部2は、中央機体11に固定的に設けられ中央耕耘体の上方部を覆う中央耕耘カバー体13を備え、この中央耕耘カバー体13の後端部に中央整地体12が上下方向に回動可能に設けられている。   The central working unit 2 includes a central tillage cover body 13 that is fixedly provided on the central body 11 and covers an upper portion of the central tillage body, and the central leveling body 12 is vertically moved at the rear end of the central tillage cover body 13. It is provided so as to be rotatable in the direction.

中央機体11は、左右方向中央部にミッションケース部15を有し、このミッションケース部15にて前後方向の入力軸(図示せず)が回転可能に支持されている。入力軸は、トラクタのPTO軸にジョイント等からなる伝動手段を介して接続される。   The central airframe 11 has a mission case portion 15 at the center in the left-right direction, and an input shaft (not shown) in the front-rear direction is rotatably supported by the mission case portion 15. The input shaft is connected to the PTO shaft of the tractor via transmission means such as a joint.

中央耕耘体(図示せず)は、中央機体11にて回転可能に支持された左右方向長手状の耕耘軸を有し、この耕耘軸の複数の爪ホルダ部33には耕耘爪34が取り付けられている。   The central tillage body (not shown) has a left and right longitudinal tillage shaft that is rotatably supported by the central body 11, and the tilling claws 34 are attached to a plurality of claw holder portions 33 of the tillage shaft. ing.

中央整地体12は、中央耕耘カバー体13の後端部にゴムカバー16を介して取り付けられた第1整地板(均平板)17を有し、この第1整地板17の下端部に第2整地板(レーキ)18が取り付けられている。なお、ゴムカバー16を用いることなく、第1整地板17の上端部を中央耕耘カバー体13の後端部に回動可能に取り付けてもよい。   The center leveling body 12 has a first leveling plate (level plate) 17 attached to the rear end portion of the central tillage cover body 13 via a rubber cover 16, and a second leveling plate 17 is provided at the lower end portion of the first leveling plate 17. A leveling plate (rake) 18 is attached. Note that the upper end portion of the first leveling plate 17 may be rotatably attached to the rear end portion of the central tillage cover body 13 without using the rubber cover 16.

延長作業部4は、図1ないし図3にも示されるように、中央作業部2の中央機体11の外端部(左右方向端部)に回動支点3を中心として上下方向に回動可能に取り付けられた機体(延長機体)21と、この機体21にて回転可能に支持され、所定の回転方向に回転しながら耕耘作業をする耕耘体(延長耕耘体)22と、この耕耘体22の後方で整地作業をする整地体(延長整地体)23とを備えている。   As shown in FIGS. 1 to 3, the extension work part 4 can be turned up and down around the turning fulcrum 3 at the outer end (left and right end part) of the central body 11 of the central work part 2. A machine body (extension machine body) 21 attached to the cultivator body, a cultivating body (extended cultivating body) 22 that is rotatably supported by the machine body 21 and rotates in a predetermined rotation direction, and the cultivating body 22 And a leveling body (extended leveling body) 23 for performing leveling work behind.

また、延長作業部4は、機体21に固定的に設けられ耕耘体22の上方部を覆う耕耘カバー体(延長耕耘カバー体)24を備え、この耕耘カバー体24の後端部に整地体23が上下方向に回動可能に設けられている。   The extension working unit 4 is provided with a tillage cover body (extension tillage cover body) 24 that is fixedly provided on the machine body 21 and covers the upper part of the tillage body 22, and a leveling body 23 at the rear end of the tillage cover body 24. Is provided so as to be rotatable in the vertical direction.

機体21は、左右方向長手状のフレーム部でフレームパイプ部26を有し、このフレームパイプ部26の長手方向一端部である内端部には、板状の耕耘体支持部であるブラケット部27の上部が取り付けられている。フレームパイプ部26の長手方向他端部である外端部には、箱状の耕耘体支持部であるチェーンケース部28の上部が取り付けられている。チェーンケース部28は、機体21の外端部、つまり農作業機1の外端部(外側端部)に位置している。   The machine body 21 has a frame pipe portion 26 which is a frame portion which is longitudinal in the left-right direction, and a bracket portion 27 which is a plate-shaped tillage body support portion is provided at an inner end portion which is one end portion of the frame pipe portion 26 in the longitudinal direction. The top of is attached. The upper part of the chain case part 28 which is a box-shaped tiller support part is attached to the outer end part which is the other longitudinal end part of the frame pipe part 26. The chain case portion 28 is located at the outer end portion of the machine body 21, that is, the outer end portion (outer end portion) of the agricultural machine 1.

チェーンケース部28は、図1から明らかなように、チェーンケース側板29と、このチェーンケース側板29に取り付けられたチェーンケース本体30と、このチェーンケース本体30に取り付けられこのチェーンケース本体30の上下方向中間部を覆って保護するガード板20を有している。チェーンケース側板29には、チェーンケース本体30よりも前方に突出して位置する前方突出板部29aが形成されている。   As apparent from FIG. 1, the chain case portion 28 includes a chain case side plate 29, a chain case main body 30 attached to the chain case side plate 29, and an upper and lower sides of the chain case main body 30 attached to the chain case main body 30. It has a guard plate 20 that covers and protects the middle portion in the direction. The chain case side plate 29 is formed with a front protruding plate portion 29a that protrudes forward from the chain case body 30.

耕耘体22は、互いに離間対向する両耕耘体支持部、つまり内端側のブラケット部27および外端側のチェーンケース部28にて回転可能に支持された左右方向長手状の耕耘軸31を有している。すなわち、耕耘軸31の内端部がブラケット部27の下部にベアリングを介して回転可能に取り付けられ、耕耘軸31の外端部がチェーンケース部28の下部にベアリングを介して回転可能に取り付けられている。また、耕耘軸31は、軸本体部32の外周面から突出する複数の爪ホルダ部33を有し、この各爪ホルダ部33には耕耘爪34が取り付けられている。   The cultivating body 22 has a cultivating shaft 31 having a left and right longitudinally cultivated shaft 31 rotatably supported by both cultivating body support portions that are spaced apart from each other, that is, an inner end bracket portion 27 and an outer end chain case portion 28. doing. That is, the inner end portion of the tillage shaft 31 is rotatably attached to the lower portion of the bracket portion 27 via a bearing, and the outer end portion of the tillage shaft 31 is rotatably attached to the lower portion of the chain case portion 28 via a bearing. ing. Further, the tilling shaft 31 has a plurality of claw holder portions 33 protruding from the outer peripheral surface of the shaft main body portion 32, and a tilling claw 34 is attached to each claw holder portion 33.

なお、耕耘体22は、機体21のチェーンケース部28内に収納配設されたチェーン等からなる動力伝達手段(図示せず)から動力を受けて所定の回転方向に回転する。   The cultivator 22 receives power from a power transmission means (not shown) including a chain or the like housed in the chain case portion 28 of the machine body 21 and rotates in a predetermined rotation direction.

整地体23は、耕耘カバー体24の後端部にゴムカバー36を介して取り付けられた第1整地板(均平板)37を有し、この第1整地板37の下端部に第2整地板(レーキ)38が取り付けられている。第2整地板38の外端部には、延長整地板(延長レーキ)39が折畳・展開可能に設けられている。なお、ゴムカバー36を用いることなく、第1整地板37の上端部を耕耘カバー体24の後端部に回動可能に取り付けてもよい。   The leveling body 23 has a first leveling plate (leveled plate) 37 attached to the rear end portion of the tillage cover body 24 via a rubber cover 36, and a second leveling plate at the lower end of the first leveling plate 37. (Rake) 38 is attached. An extended leveling plate (extended rake) 39 is provided at the outer end of the second leveling plate 38 so as to be foldable and unfoldable. Note that the upper end portion of the first leveling plate 37 may be rotatably attached to the rear end portion of the tilling cover body 24 without using the rubber cover 36.

耕耘カバー体24は、耕耘体22の上方に位置してこの耕耘体22の上方部を覆う左右方向長手状で板状のカバー本体41を有している。カバー本体41の長手方向一端部である内端部(内側端部)にはカバー内側板42が固着され、このカバー内側板42が機体21のブラケット部27に取り付けられている。カバー本体41の長手方向他端部である外端部(外側端部)にはカバー外側板43が固着され、このカバー外側板43が機体21のチェーンケース部28のチェーンケース側板29に取り付けられている。   The tillage cover body 24 includes a plate-like cover body 41 that is located above the tillage body 22 and covers the upper portion of the tillage body 22 in the left-right direction. A cover inner plate 42 is fixed to an inner end portion (inner end portion) which is one end portion of the cover body 41 in the longitudinal direction, and the cover inner plate 42 is attached to the bracket portion 27 of the body 21. A cover outer plate 43 is fixed to the outer end portion (outer end portion) which is the other longitudinal end portion of the cover body 41, and this cover outer plate 43 is attached to the chain case side plate 29 of the chain case portion 28 of the machine body 21. ing.

また、カバー本体41の後端部には後補強板44が固着され、カバー本体41の前端部には前補強板45が固着され、この前補強板45にはゴム板46が取付具47にて取り付けられている。   A rear reinforcing plate 44 is fixed to the rear end portion of the cover main body 41, and a front reinforcing plate 45 is fixed to the front end portion of the cover main body 41. A rubber plate 46 is attached to the fixture 47 on the front reinforcing plate 45. Attached.

さらに、カバー本体41は、図3から明らかなように、例えば耕耘体22の耕耘軸31の真上に位置する上方に向かって凸の湾曲状の湾曲板部51と、この湾曲板部51の前端部に一体に連設された前低後高の前下がり傾斜状の傾斜板部である前側傾斜板部52と、この前側傾斜板部52の前端部から下方に向かって一体に突出する鉛直状の下方突出板部53と、この下方突出板部53の下端部から前方に向かって一体に突出する水平状の前方突出板部54と、湾曲板部51の後端部に一体に連設された前高後低の後下がり傾斜状の傾斜板部である後側傾斜板部55とにて構成されている。   Further, as is clear from FIG. 3, the cover main body 41 includes, for example, an upwardly curved curved plate portion 51 positioned directly above the tilling shaft 31 of the tillage body 22, and the curved plate portion 51. A front inclined plate portion 52 that is an inclined plate portion having a front lower slope, a front lower slope, and a front inclined portion that is integrally connected to the front end portion, and a vertical that projects downward integrally from the front end portion of the front inclined plate portion 52. -Like downward projecting plate portion 53, a horizontal front projecting plate portion 54 that projects integrally forward from the lower end portion of this downward projecting plate portion 53, and a rear end portion of the curved plate portion 51 are integrally connected to one another The rear inclined plate portion 55, which is an inclined plate portion having a rearwardly inclined shape, is formed by the front high, low and low.

前補強板45は、下方突出板部53の前面および前方突出板部54の上面に固着されている。後補強板44は、後側傾斜板部55の上面に固着されている。   The front reinforcing plate 45 is fixed to the front surface of the downward projecting plate portion 53 and the upper surface of the front projecting plate portion 54. The rear reinforcing plate 44 is fixed to the upper surface of the rear inclined plate portion 55.

なお、前下がり傾斜状の前側傾斜板部52の水平方向に対する傾斜角度αは、例えば10〜50度、好ましくは33度である。図1では、斜線を施した部分が前側傾斜板部52である。   In addition, the inclination angle α with respect to the horizontal direction of the front inclined plate portion 52 that is inclined forwardly is, for example, 10 to 50 degrees, preferably 33 degrees. In FIG. 1, the hatched portion is the front inclined plate portion 52.

また、左右の各延長作業部4の機体21の外端側のチェーンケース部28には、このチェーンケース部28の下部を覆って保護するとともに、圃場の土(泥土)を耕耘体22側に向けて内側方へ案内するガード体(チェーンケースガード)61が取付具(例えばボルトおよびナット等)60にて脱着可能に取り付けられている。   In addition, the chain case part 28 on the outer end side of the machine body 21 of each of the left and right extension work parts 4 covers and protects the lower part of the chain case part 28, and soil (mud) in the field is placed on the side of the tillage body 22 side. A guard body (chain case guard) 61 that guides inwardly toward the inside is detachably attached by a fixture (for example, a bolt and a nut) 60.

つまり、農作業機1の左右の両外端部(左右の外側端部)に位置する各チェーンケース部28の下部には、チェーンケース部28の下部における前面および外側面を覆って保護するとともに、チェーンケース部28による残耕発生を防止するガード体61が設けられている。   That is, while protecting the lower part of each chain case part 28 located in the both right and left outer ends (left and right outer end parts) of the agricultural machine 1 by covering the front and outer surfaces of the lower part of the chain case part 28, A guard body 61 for preventing the occurrence of residual tilling by the chain case portion 28 is provided.

ガード体61は、図5ないし図8にも示されるように、互いに離間対向する内側板部63および外側板部64を有している。内側板部63は、外側板部64よりも小さく、外側板部64の前側上部のみと離間対向している。そして、この内側板部63は、チェーンケース側板29の前方突出板部29aの外面にこの外面と重なるように取り付けられる(図1参照)。また、外側板部64には、ガード板20が当接する切欠部65が形成されている。   As shown in FIGS. 5 to 8, the guard body 61 includes an inner plate portion 63 and an outer plate portion 64 that are spaced apart from each other. The inner side plate part 63 is smaller than the outer side plate part 64, and is separated and opposed only to the front upper part of the outer side plate part 64. The inner plate 63 is attached to the outer surface of the front protruding plate 29a of the chain case side plate 29 so as to overlap the outer surface (see FIG. 1). Further, the outer plate portion 64 is formed with a notch portion 65 with which the guard plate 20 abuts.

そして、内側板部63の上端部と外側板部64の上端部とが、後端から前端に向かって徐々に下方に位置するように水平方向に対して傾斜した前低後高の前下がり傾斜状の傾斜上板部66にて連結されている。つまり、この傾斜上板部66は、耕耘整地作業時に進行方向前側が下がりかつ進行方向後側が上がった前低後高の前下がり傾斜状となってチェーンケース部28の前方に位置する。   Then, the front lower slope of the front low rear height that is inclined with respect to the horizontal direction so that the upper end portion of the inner plate portion 63 and the upper end portion of the outer plate portion 64 are gradually located downward from the rear end toward the front end. Are connected by a slanted upper plate portion 66 having a shape. In other words, the inclined upper plate portion 66 is positioned in front of the chain case portion 28 in a front-down, rear-and-high height downwardly inclined shape in which the front side in the traveling direction is lowered and the rear side in the traveling direction is raised during the tilling work.

傾斜上板部66は、平面視で、前後方向に長手方向有する略矩形状をなす形状に形成されており、その幅方向一端部である内端部が内側板部63の上端部、すなわち例えば上端よりも若干低い上端近傍部分に固着され、その幅方向他端部である外端部が外側板部64の上端部、上端よりも若干低い上端近傍部分に固着されている。傾斜上板部66の後端部は、自由端部67となっており、この自由端部67はチェーンケース部28の前面28aに近接(当接を含む)して位置している(図1参照)。   The inclined upper plate portion 66 is formed in a substantially rectangular shape having a longitudinal direction in the front-rear direction in plan view, and an inner end portion which is one end portion in the width direction is an upper end portion of the inner plate portion 63, for example, The outer end portion, which is the other end in the width direction, is fixed to the upper end portion of the outer plate 64 and the upper end vicinity portion slightly lower than the upper end. The rear end portion of the inclined upper plate portion 66 is a free end portion 67, and the free end portion 67 is located close to (including abutting) the front surface 28a of the chain case portion 28 (FIG. 1). reference).

また、ガード体61は、傾斜上板部66の前端部から下方に向かって一体に突出する鉛直状の鉛直前板部68と、この鉛直前板部68の下端部から斜め下後方に向かって一体に突出する前高後低の急な後下がり傾斜状の傾斜前板部69と、この傾斜前板部69の下端部から後方に向かって一体に突出する水平状の後方突出板部70とを有している。   The guard body 61 has a vertical vertical front plate portion 68 that integrally projects downward from the front end portion of the inclined upper plate portion 66, and obliquely downward and rearward from the lower end portion of the vertical front plate portion 68. An inclined front plate portion 69 having a sharp rear-falling slope with a front height, a rear height, and a low height projecting integrally, and a horizontal rear projecting plate portion 70 integrally projecting rearward from the lower end portion of the inclined front plate portion 69, have.

さらに、ガード体61は、前方に位置する圃場の土を耕耘体22側に向けて内側方へ案内する案内前板部(切り込み板)71を有している。案内前板部71は、前端(外端)から後端(内端)に向かって徐々に内側方に位置するように前後方向に対して傾斜状に位置している。つまり、案内前板部71は、外側板部64の前端部の近傍位置から斜め内側後方に向かって突出した状態で位置している。この案内前板部71は、正面視で傾斜前板部69の下方に位置し、この案内前板部71の後端部である内端部が内側板部63よりも内側方に突出して位置している。   Furthermore, the guard body 61 has a front guide plate portion (cut plate) 71 that guides the soil of the farm field located in the front toward the tillage body 22 side inward. The guide front plate portion 71 is inclined with respect to the front-rear direction so as to be gradually inward from the front end (outer end) toward the rear end (inner end). That is, the front guide plate portion 71 is positioned in a state of projecting obliquely inward and rearward from a position near the front end portion of the outer plate portion 64. The front guide plate portion 71 is located below the inclined front plate portion 69 in a front view, and the inner end portion, which is the rear end portion of the front guide plate portion 71, protrudes inward from the inner plate portion 63. doing.

また、案内前板部71の下端部には水平状の下板部72が一体に設けられ、この下板部72の外端部が外側板部64の下端部に固着されている。外側板部64の前端側は、案内前板部71側に向かって折り曲げられて逃げ面73が形成されている。下板部72には、切欠状のドレンボルト用孔74が形成されている。   Further, a horizontal lower plate portion 72 is integrally provided at the lower end portion of the front guide plate portion 71, and the outer end portion of the lower plate portion 72 is fixed to the lower end portion of the outer plate portion 64. A front end side of the outer side plate portion 64 is bent toward the front guide plate portion 71 side to form a flank 73. The lower plate portion 72 is formed with a notch-shaped drain bolt hole 74.

ここで、図1および図2から明らかなように、ガード体61の平板状の傾斜上板部66と耕耘カバー体24の平板状の前側傾斜板部52とが同一面(略同一面を含む)上に位置しており、側面視でそれら傾斜上板部66と前側傾斜板部52とが同一高さ(略同一高さを含む)で互いに重なり合っている。   Here, as is clear from FIGS. 1 and 2, the flat inclined upper plate portion 66 of the guard body 61 and the flat front inclined plate portion 52 of the tillage cover body 24 are on the same plane (including substantially the same plane). The inclined upper plate portion 66 and the front inclined plate portion 52 overlap each other at the same height (including substantially the same height) in a side view.

なおこの例では、ガード体61の傾斜上板部66が、耕耘カバー体24の前側傾斜板部52よりも若干上方に位置するが、例えば傾斜上板部66と前側傾斜板部52とが側面視で完全に一致してもよく、また、傾斜上板部66が前側傾斜板部52よりも若干下方に位置するようにしてもよい。   In this example, the inclined upper plate portion 66 of the guard body 61 is positioned slightly above the front inclined plate portion 52 of the tillage cover body 24. For example, the inclined upper plate portion 66 and the front inclined plate portion 52 are side surfaces. The inclined upper plate portion 66 may be positioned slightly lower than the front inclined plate portion 52.

ガード体61の傾斜上板部66の水平方向に対する傾斜角度βは、例えば10〜50度、好ましくは33度であり、耕耘カバー体24の前側傾斜板部52の傾斜角度αと同じ角度(略同じ角度を含む)に設定されている。   An inclination angle β with respect to the horizontal direction of the inclined upper plate portion 66 of the guard body 61 is, for example, 10 to 50 degrees, preferably 33 degrees, and is the same angle (substantially as the inclination angle α of the front inclined plate portion 52 of the tillage cover body 24). Including the same angle).

また、ガード体61の傾斜上板部66の前後方向長さ寸法は、耕耘カバー体24の前側傾斜板部52の前後方向長さ寸法よりもく、傾斜上板部66の前端側は、前側傾斜板部52の前端部よりも前方に突出して位置している。ガード体61の傾斜上板部66の左右方向長さ寸法である幅寸法は、チェーンケース部28の幅寸法と同一寸法(略同一寸法を含む)である。なお、傾斜上板部66の上面および前側傾斜板部52の上面は、いずれも平面状に形成されている。 Further, the front-rear direction length of the inclined upper portion 66 of the guard member 61, rather long than the front-back direction length of the front inclined plate portion 52 of the tiller cover 24, the front end side of the inclined plate portion 66, The front inclined plate portion 52 is positioned so as to protrude forward from the front end portion. The width dimension which is the length dimension in the left-right direction of the inclined upper plate part 66 of the guard body 61 is the same dimension (including substantially the same dimension) as the width dimension of the chain case part 28. The upper surface of the inclined upper plate portion 66 and the upper surface of the front inclined plate portion 52 are both formed in a planar shape.

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

農作業機1をトラクタの後部に連結して、そのトラクタの走行により農作業機1を圃場上で前方に移動させつつ耕耘整地作業を行う。   The farm work machine 1 is connected to the rear part of the tractor, and the farm work machine 1 is moved forward on the field by the traveling of the tractor, and the tilling work is performed.

この作業時において、農作業機1の左右の両外端部の位置では、圃場の土(泥土)が延長作業部4のガード体61の案内前板部71に当たって耕耘体22側へ誘導案内される。   At the time of this work, at the positions of the left and right outer ends of the agricultural work machine 1, the soil (mud) in the field hits the guidance front plate 71 of the guard body 61 of the extension work part 4 and is guided to the tillage body 22 side. .

そして、その案内された土は、耕耘体22の耕耘爪34にて耕耘されるため、チェーンケース部28による残耕が生じない。その結果、適切な耕耘整地作業ができ、畦際まできれいに仕上げることが可能である。   Since the guided soil is cultivated by the cultivating claws 34 of the cultivating body 22, no residual tilling by the chain case portion 28 occurs. As a result, it is possible to perform appropriate tillage work, and it is possible to finish it finely to the edge.

また、ガード体61の上面部は、前下がり傾斜状の傾斜上板部66にて構成されているため、例えば水平状の水平上板部にて構成した場合に比べて、稲わら等の夾雑物や圃場の土がガード体61上に溜まりにくい。すなわち例えば、作業時に夾雑物や土が傾斜上板部66上に乗っても自重で流れ落ちるため、傾斜上板部66上に夾雑物や土が固まりとなって溜まるようなことがない。   Further, since the upper surface portion of the guard body 61 is configured by the inclined upper plate portion 66 that is inclined forward and downward, for example, compared to a case where it is configured by a horizontal upper plate portion that is horizontal, it is more contaminated such as rice straw. Objects and soil in the field are unlikely to accumulate on the guard body 61. That is to say, for example, even if foreign matters and soil are put on the inclined upper plate portion 66 during work, they flow down by their own weight, so that the foreign matters and soil do not collect and collect on the inclined upper plate portion 66.

その結果、例えば圃場間の移動時に、夾雑物や土を道路の上に落とすことが少なくなり、道路掃除等の余計な作業が不要で、作業効率の向上を図ることが可能である。   As a result, for example, when moving between farm fields, it is less likely to drop impurities and soil on the road, and unnecessary work such as road cleaning is unnecessary, and work efficiency can be improved.

そして、農作業機1によれば、ガード体61が各延長作業部4の機体21のチェーンケース部28を覆って保護するとともに土を耕耘体22側に向けて案内するため、チェーンケース部28を保護できるばかりでなく、適切な耕耘作業ができ、しかも、ガード体61は前下がり傾斜状の傾斜上板部66を有するため、稲わら等の夾雑物や土がガード体61上に溜まるのを抑制できる。   And according to the agricultural machine 1, the guard body 61 covers and protects the chain case part 28 of the machine body 21 of each extension work part 4 and guides the soil toward the tillage body 22 side. Not only can it be protected, it can be properly cultivated, and the guard body 61 has a slanted upper plate 66 that is inclined forwardly, so that impurities such as rice straw and soil accumulate on the guard body 61. Can be suppressed.

また、耕耘カバー体24は前下がり傾斜状の前側傾斜板部52を有し、ガード体61の傾斜上板部66と耕耘カバー体24の前側傾斜板部52とが同一面上に位置し、かつ、側面視でガード体61の傾斜上板部66と耕耘カバー体24の前側傾斜板部52とが重なり合うため、稲わら等の夾雑物や土がガード体61上に溜まるのを効果的に抑制できる。   Further, the tillage cover body 24 has a front inclined plate portion 52 that is inclined forwardly, and the inclined upper plate portion 66 of the guard body 61 and the front inclined plate portion 52 of the tillage cover body 24 are located on the same plane, In addition, since the inclined upper plate portion 66 of the guard body 61 and the front inclined plate portion 52 of the tillage cover body 24 overlap with each other in a side view, it is effective to collect impurities such as rice straw and soil on the guard body 61. Can be suppressed.

なお、農作業機1は、3分割の折畳式のものには限定されず、例えば中央作業部2のみからなる1本ものでもよく、この場合、例えば機体の左端部に位置する耕耘体支持部(チェーンケース部)にガード体61を設ける。   The farm work machine 1 is not limited to a three-fold foldable type, and may be, for example, a single work piece made up of only the central work part 2. In this case, for example, a tiller support part located at the left end of the machine body A guard body 61 is provided on the (chain case).

また、ガード体61にて保護される耕耘体支持部は、チェーンケース部以外でもよく、例えばブラケット部でもよい。   Further, the tilling body support portion protected by the guard body 61 may be other than the chain case portion, for example, a bracket portion.

さらに、例えばガード板20を有しない構成でもよく、また、例えばガード板20をガード体61に一体的に設けた構成等でもよい。   Further, for example, a configuration without the guard plate 20 may be used, or a configuration in which the guard plate 20 is provided integrally with the guard body 61 may be used.

また、ガード体61の傾斜上板部66や耕耘カバー体24の前側傾斜板部52は、例えば上方に向かって凸状または凹状に湾曲した前下がり傾斜状のものや、複数個所で屈曲した前下がり傾斜状のもの等でもよい。   Further, the inclined upper plate portion 66 of the guard body 61 and the front inclined plate portion 52 of the tillage cover body 24 are, for example, those having a downwardly inclined shape that curves upward or downward, or before being bent at a plurality of locations. It may be a downward slope.

1 農作業機
21 機体
22 耕耘体
23 整地体
24 耕耘カバー体
28 耕耘体支持部であるチェーンケース部
52 傾斜板部である前側傾斜板部
61 ガード体
66 傾斜上板部
1 Agricultural machine
21 Aircraft
22 Tillage
23 Leveling body
24 Tillage cover body
28 Chain case part which is the support body
52 Front inclined plate part which is an inclined plate part
61 Guard body
66 Inclined upper plate

Claims (4)

耕耘体支持部を有する機体と、
前記耕耘体支持部にて支持され、耕耘作業をする耕耘体と、
この耕耘体の後方で整地作業をする整地体と、
前記耕耘体の上方部を覆う耕耘カバー体と、
前記耕耘体支持部を覆って保護するとともに、土を耕耘体側に向けて案内するガード体とを備え、
前記ガード体は、前記耕耘体支持部の前面を覆って保護する前下がり傾斜状の傾斜上板部を上面部に有する
ことを特徴とする農作業機。
An airframe having a tillage body support,
A cultivated body that is supported by the cultivated body support portion and performs a cultivating work,
A leveling body that performs leveling work behind this tilled body,
A cultivation cover body covering an upper portion of the cultivation body;
The cover includes a guard body that covers and protects the tillage body support and guides the soil toward the tillage body side,
The guard body, agricultural machine, characterized in that it comprises an upper surface portion of the inclined slope upper plate downward before covering and protecting the front of the tiller body supporting portion.
ガード体の傾斜上板部の幅寸法は、耕耘体支持部の幅寸法と同一寸法であるThe width of the sloping upper plate of the guard body is the same as the width of the tillage support.
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.
耕耘体支持部を有する機体と、
前記耕耘体支持部にて支持され、耕耘作業をする耕耘体と、
この耕耘体の後方で整地作業をする整地体と、
前下がり傾斜状の傾斜板部を有し、前記耕耘体の上方部を覆う耕耘カバー体と、
前下がり傾斜状の傾斜上板部を有し、前記耕耘体支持部を覆って保護するとともに、土を耕耘体側に向けて案内するガード体とを備え、
前記ガード体の前記傾斜上板部と前記耕耘カバー体の前記傾斜板部とが同一面上に位置し、
側面視で、前記ガード体の前記傾斜上板部と前記耕耘カバー体の前記傾斜板部とが重なり合う
ことを特徴とする農作業機。
An airframe having a tillage body support,
A cultivated body that is supported by the cultivated body support portion and performs a cultivating work,
A leveling body that performs leveling work behind this tilled body,
A tillage cover body that has an inclined plate portion that is inclined forward and covers the upper portion of the tillage body;
It has an inclined upper plate part that is inclined forwardly and has a guard body that covers and protects the tillage body support section and guides the soil toward the tillage body side,
The inclined upper plate portion of the guard body and the inclined plate portion of the tillage cover body are located on the same plane,
In side view, agricultural working machine characterized in that said inclined upper portion of the guard member and the inclined plate portion of the tillage cover body overlap.
耕耘体支持部は、機体の外端部に位置するチェーンケース部である
ことを特徴とする請求項1ないし3のいずれか一記載の農作業機。
The farm work machine according to any one of claims 1 to 3, wherein the tillage body support part is a chain case part located at an outer end part of the machine body.
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