JP2007116992A - Weeding apparatus for paddy field - Google Patents

Weeding apparatus for paddy field Download PDF

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JP2007116992A
JP2007116992A JP2005313911A JP2005313911A JP2007116992A JP 2007116992 A JP2007116992 A JP 2007116992A JP 2005313911 A JP2005313911 A JP 2005313911A JP 2005313911 A JP2005313911 A JP 2005313911A JP 2007116992 A JP2007116992 A JP 2007116992A
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weeding
paddy field
paddy
grooving
shoots
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JP4754938B2 (en
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Mitsuru Mishiro
満 三代
Yoshihisa Yurino
善久 百合野
Masanori Ishikawa
昌範 石川
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Mitsubishi Agricultural Machinery Co Ltd
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Mitsubishi Agricultural Machinery Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To improve operation efficiency by constituting a weeding apparatus for a paddy field to be attached to a working vehicle so as to carry out both of the removing operation of weeds growing in the paddy field and grooving operation of the paddy field by the one working vehicle. <P>SOLUTION: The weeding apparatus for the paddy field has a traveling machine body 14 supported by front wheels 12 and rear wheels 13, and a weeding device 10 for the paddy field comprising rotary weeding means 31, 32, 33 comprising weeding wheels 30 rotating by centering horizontal shafts, and rake-shaped weeding means 35, 36 having elasticity, and attached to the rear part of the riding type working vehicle 11 capable of moving by spanning a transplanted seedling ridge, and is constituted so that grooving machines 52, 52 the heights of which can be regulated may be attached to the rear positions of the rear wheels 13 by removing land-leveling floats 27, 27 supported by the weeding device 10 for the paddy field. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、田植え後の水田に生える雑草を湛水状態で除去する水田用除草装置の改良に関する。   The present invention relates to an improvement in a weeding apparatus for paddy fields that removes weeds that grow on paddy fields after planting in a flooded state.

従来、原動機、フレーム、及びハンドル等を兼用しながら、アタッチメントを交換することによって、水田に生える雑草の除去と水田の溝切作業とを1台の歩行式水田作業機で行なうことができるようにしたものが知られている(例えば、特許文献1参照。)。   Conventionally, it is possible to perform removal of weeds growing in paddy fields and grooving work of paddy fields with a single walking paddy field work machine by exchanging attachments while also using a prime mover, a frame, a handle and the like. Is known (for example, see Patent Document 1).

また、水田に植付けられた苗条を跨いで移動可能な一般的な乗用型田植機の本機部を利用した作業車両の後部に、横軸中心に回転する除草車からなる回転式の除草手段と、弾性を有するレーキ式の除草手段とからなる水田用除草装置を昇降自在に装着した乗用水田作業機を本出願人自ら出願している(特許文献1参照。)。
実開昭61−120307号公報(第4−9頁、第1図、第2図) 特願2004−243820号公報(図1、図2)
In addition, at the rear of the work vehicle using the main part of a general riding type rice transplanter that can move across the shoots planted in the paddy field, there is a rotary weeding means consisting of a weed truck that rotates about the horizontal axis The present applicant has applied for a riding paddy field work machine equipped with a paddy weeding device comprising an elastic rake-type weeding means so as to be movable up and down (see Patent Document 1).
Japanese Utility Model Publication No. 61-120307 (page 4-9, FIGS. 1 and 2) Japanese Patent Application No. 2004-243820 (FIGS. 1 and 2)

しかし、上述した特許文献2の作業車両は、特許文献1の歩行式水田作業機の如くアタッチメントを交換することにより、1台の作業機で水田に生える雑草の除去と水田の溝切作業とを行なえるようにしたものではなく、当該作業車両においても1台の作業車両で水田に生える雑草の除去と水田の溝切作業とを行なえるように構成すると共に、特に水田における除草作業の終盤期において、水田に生える雑草の除去と水田の溝切作業とを同時に行えるように構成することが期待されていた。   However, the work vehicle described in Patent Document 2 described above can remove the weeds that grow on the paddy field and the grooving work of the paddy field by exchanging attachments like the walking paddy field work machine of Patent Document 1. This work vehicle is configured to be able to remove weeds growing in paddy fields and grooving paddy fields with a single work vehicle, and particularly in the final stage of weeding work in paddy fields. Therefore, it was expected to be configured to be able to simultaneously remove weeds growing in paddy fields and grooving the paddy fields.

本発明は、上記課題を解決することを目的としたものであって、前輪と後輪に支持される走行機体を有し、且つ植付けられた苗条を跨いで移動可能な作業車両に装着する水田用除草装置であって、該水田用除草装置に溝切機を装着したことを第1の特徴としている。   The present invention aims to solve the above-mentioned problems, and has a traveling machine body supported by front wheels and rear wheels, and is attached to a work vehicle that can move across planted shoots. The first feature is that a grooving machine is attached to the paddy weeding apparatus.

そして、走行機体の後部に装着した水田用除草装置であって、後輪の後方位置に溝切機を装着したことを第2の特徴としている。   And it is the paddy field weeding apparatus with which the rear part of the traveling machine body was mounted | worn, Comprising: It has the 2nd characteristic that the groove cutting machine was mounted | worn in the back position of the rear wheel.

そして、水田用除草装置に支持した整地フロートを取り外して、高さ調節可能に溝切機を装着したことを第3の特徴としている。   The third feature is that the leveling float supported by the paddy weeding device is removed, and the grooving machine is mounted so that the height can be adjusted.

請求項1の発明によれば、前輪と後輪に支持される走行機体を有し、且つ植付けられた苗条を跨いで移動可能な作業車両に装着する水田用除草装置であって、該水田用除草装置に溝切機を装着したことによって、1台の作業車両で水田に生える雑草の除去と水田の溝切作業とを行なえるようになり、特に水田における除草作業の終盤期においては、水田に生える雑草の除去と水田の溝切作業とを同時に行うことができるので作業効率が大幅に向上する。   According to the first aspect of the present invention, there is provided a paddy weeding device that is mounted on a work vehicle that has a traveling machine body supported by the front wheels and the rear wheels and is movable across the planted shoots. By attaching a grooving machine to the weeding device, it becomes possible to remove weeds growing on the paddy field and grooving the paddy field with a single work vehicle, especially in the final stage of weeding work in the paddy field. The removal of weeds that grow on the paddy field and the grooving work of the paddy field can be performed at the same time, so the work efficiency is greatly improved.

そして、請求項2の発明によれば、走行機体の後部に装着した水田用除草装置であって、後輪の後方位置に溝切機を装着したことによって、前記溝切機を後輪の走行溝に沿わせながら安定した状態で水田の溝切作業が行なえるようになる。   According to a second aspect of the present invention, there is provided a paddy field weeding device mounted on the rear portion of the traveling machine body, wherein the grooving machine is mounted on the rear wheel by mounting the grooving machine at a rear position of the rear wheel. The paddy field can be grooved in a stable state along the groove.

また、請求項3の発明によれば、水田用除草装置に支持した整地フロートを取り外して、高さ調節可能に溝切機を装着したことによって、水田に生える雑草の除去と水田の溝切作業とを同時に行うことができると共に、溝切機の高さ調節により当該溝切機による単独での水田の溝切作業も行なえるようになる。   Further, according to the invention of claim 3, by removing the leveling float supported by the paddy field weeding device and mounting the grooving machine so that the height can be adjusted, weed removal in the paddy field and the grooving operation of the paddy field Can be performed simultaneously, and by adjusting the height of the grooving machine, the grooving work of the paddy field alone by the grooving machine can be performed.

次に、本発明の実施の形態を図面に基づいて説明する。図1及び図2は、水田用除草装置10を乗用式作業車両11の後方に取り付けた状態を示す側面図と平面図である。   Next, embodiments of the present invention will be described with reference to the drawings. FIGS. 1 and 2 are a side view and a plan view showing a state in which the paddy weeding device 10 is attached to the rear of the riding work vehicle 11.

前記乗用式作業車両11は、一般的な乗用型田植機の本機部を利用したものであって、この乗用式作業車両11は、左右の前輪12及び後輪13に支持される走行機体14を有し、この走行機体14の前部にはボンネット15で覆われたエンジン16が搭載されると共に、ボンネット15の後方にはステアリングハンドル17や主変速レバー18等を備えた操縦部19、及び運転席21等が配設されており、水田に植付けられた苗条を跨いで移動することができる。   The riding-type work vehicle 11 uses a main part of a general riding-type rice transplanter, and the riding-type work vehicle 11 is supported by a traveling machine body 14 supported by left and right front wheels 12 and a rear wheel 13. An engine 16 covered with a bonnet 15 is mounted on the front part of the traveling body 14, and a steering part 19 having a steering handle 17, a main transmission lever 18, etc. is provided behind the bonnet 15, and A driver's seat 21 and the like are provided, and the driver's seat 21 can be moved across the shoots planted in the paddy field.

そして、走行機体14の後部には昇降リンク機構22が設けられており、この昇降リンク機構22の終端部に装着したヒッチホルダ23を介して、水田用除草装置10を着脱可能に取り付けている。尚、昇降リンク機構22は油圧シリンダ24の伸縮動作により上下に昇降連動するが、これらの基本的な構成は何れも従来通りであり詳細な説明を省略する。   And the raising / lowering link mechanism 22 is provided in the rear part of the traveling body 14, and the paddy field weeding apparatus 10 is detachably attached through the hitch holder 23 attached to the terminal part of this raising / lowering link mechanism 22. The elevating link mechanism 22 is moved up and down in conjunction with the expansion and contraction operation of the hydraulic cylinder 24. However, these basic configurations are all the same as in the prior art and will not be described in detail.

次に水田用除草装置10の構成について説明する。水田用除草装置10は、ヒッチホルダ23にローリング可能に支承すると共に、作業車両11の幅方向(左右方向)に横設した角パイプ製のローリングフレーム25をベースとして支持した整地フロートとしてのセンタフロート26、左右のサイドフロート27、走行機体14の進行方向に対する横軸中心に自由回転可能な前後一対の除草車30,30からなる回転式の除草手段31,32,33、及びレーキ式の除草手段であるレーキ35,36等から構成している。尚、前記除草車30は田面との接地抵抗によって走行機体14の進行方向に転動する。   Next, the configuration of the paddy weeding apparatus 10 will be described. The paddy field weeding device 10 is supported on the hitch holder 23 so as to be capable of rolling, and a center float 26 as a leveling float supported on the basis of a rolling frame 25 made of a square pipe horizontally provided in the width direction (left-right direction) of the work vehicle 11. Rotating weeding means 31, 32, 33 including a pair of front and rear weeding vehicles 30, 30 that can freely rotate around the horizontal axis with respect to the traveling direction of the traveling vehicle body 14, and a rake-type weeding means It consists of some rakes 35, 36, etc. The weed truck 30 rolls in the traveling direction of the traveling machine body 14 due to the grounding resistance with the paddy surface.

更に詳しくは、ローリングフレーム25の左右両側には、支持フレーム41,41が後方に向けて延設してあり、この支持フレーム41,41に所定の前後間隔を存して横設したレーキ取り付けバー42,42に、前記レーキ35,36を所定の間隔を存して幅方向に取り付けることができるようになっている。また、支持フレーム41,41の終端部には、水田用除草装置10を接地姿勢で支持する左右一対のスタンド43,43を収納状態に退避可能に設けている。   More specifically, support frames 41, 41 are extended rearward on the left and right sides of the rolling frame 25, and the rake mounting bar is provided horizontally on the support frames 41, 41 with a predetermined longitudinal interval. The rakes 35, 36 can be attached to the widths 42, 42 at a predetermined interval. In addition, a pair of left and right stands 43 and 43 that support the paddy weeding device 10 in a grounding posture are provided at the end portions of the support frames 41 and 41 so as to be retracted to a stored state.

そして、センタフロート26は、ヒッチホルダ23の下部に延設した支持部材23aに上下揺動可能に支承すると共に、乗用式作業車両11である乗用型田植機の本機部に備える従来の油圧感知機構45を利用して、田面の湛水状態や土質に応じた水田用除草装置10の高さ調節が自動的に行えるようになっている。   The center float 26 is supported by a support member 23a extending below the hitch holder 23 so as to be swingable up and down, and is provided with a conventional hydraulic sensing mechanism provided in the main part of the riding type rice transplanter, which is the riding work vehicle 11. 45, the height adjustment of the paddy weeding device 10 can be automatically performed according to the flooding condition and soil quality of the paddy surface.

一方、左右のサイドフロート27は、支持フレーム41,41の基端部近傍において、ローリングフレーム25に螺設した取り付けブラケット51,51(図3参照)に垂下状態で取着してなる支持部材46,46の下端部に上下揺動可能に支承されると共に、左右の前輪12及び後輪13と走行機体14の幅方向でラップする位置に配設してあって、当該前輪12及び後輪13の車輪後消し作用も兼ねている。   On the other hand, the left and right side floats 27 are attached to mounting brackets 51, 51 (see FIG. 3) that are screwed to the rolling frame 25 in the vicinity of the base ends of the support frames 41, 41. , 46 is supported at the lower end of the vehicle 46 so as to be able to swing up and down, and is disposed at a position where it wraps in the width direction of the left and right front wheels 12 and rear wheels 13 and the traveling machine body 14. It also serves as a wheel eraser.

また、上述した回転式の除草手段31は、センタフロート26の後方に配置すべく、ローリングフレーム25の幅方向中間位置から垂下する支持部材47に取り付けてある。つまり、回転式の除草手段31は、図2において、植え付けられた苗条に便宜上付与した記号N1〜N8のうち、中央の苗条N4とN5の条間で除草手段として作用する。   The rotary weeding means 31 described above is attached to a support member 47 that hangs down from an intermediate position in the width direction of the rolling frame 25 so as to be arranged behind the center float 26. In other words, the rotary weeding means 31 acts as a weeding means between the middle shoots N4 and N5 among the symbols N1 to N8 given for convenience to the planted shoots in FIG.

同様に、回転式の除草手段32は、センタフロート26の左側に隣接する苗条N4とN3との条間、及びセンタフロート26の右側に隣接する苗条N5とN6との条間に配置すべく、ローリングフレーム25から垂下する支持部材47に取り付けてある。つまり、回転式の除草手段32は、苗条N4とN3との条間、及び苗条N5とN6との条間で除草手段として作用する。   Similarly, the rotary weeding means 32 is disposed between the shoots N4 and N3 adjacent to the left side of the center float 26 and between the shoots N5 and N6 adjacent to the right side of the center float 26. It is attached to a support member 47 that hangs down from the rolling frame 25. That is, the rotary weeding means 32 acts as a weeding means between the shoots N4 and N3 and between the shoots N5 and N6.

更に、回転式の除草手段33は、左側のサイドフロート27の外側に隣接する苗条N2とN1との条間、及び右側のサイドフロート27の外側に隣接する苗条N7とN8との条間に配置すべく、ローリングフレーム25から垂下する支持部材47に取り付けてある。つまり、回転式の除草手段33は、苗条N2とN1との条間、及び苗条N7とN8との条間で除草手段として作用する。   Further, the rotary weeding means 33 is arranged between the shoots N2 and N1 adjacent to the outside of the left side float 27 and between the shoots N7 and N8 adjacent to the outside of the right side float 27. For this purpose, it is attached to a support member 47 depending from the rolling frame 25. That is, the rotary weeding means 33 acts as a weeding means between the shoots N2 and N1 and between the shoots N7 and N8.

また、前側のレーキ取り付けバー42には、苗条N2、N3、N4,N5,N6,N7,N8に対応して、これらの苗条の株を挟み込むような先端形状を備えて弾性を有するレーキ35を螺着してあり、このレーキ35が苗条の株間で除草手段として作用する。   In addition, the front rake mounting bar 42 is provided with a rake 35 having elasticity and having a tip shape that sandwiches the shoots of the shoots corresponding to the shoots N2, N3, N4, N5, N6, N7, and N8. It is screwed and this rake 35 acts as a weeding means between the shoots.

そして、後側のレーキ取り付けバー42には、回転式の除草手段31の後方で中央の苗条N4とN5との条間、左側回転式の除草手段32の後方で苗条N3とN4との条間、右側回転式の除草手段32の後方で苗条N5とN6との条間、最左側回転式の除草手段33の後方で苗条N1とN2との条間、及び最右側回転式の除草手段の33後方で苗条N7とN8との条間に対応し、これら条間の除草手段として作用する末広がりの先端形状を備えて弾性を有するレーキ36を螺着してある。   The rear rake mounting bar 42 has a gap between the center shoots N4 and N5 behind the rotary weeding means 31, and a gap between the shoots N3 and N4 behind the left-side rotary weeding means 32. The ridges N5 and N6 at the rear of the right-side rotary weeding means 32, the ridges of the shoots N1 and N2 at the rear of the leftmost rotary weeding means 33, and the right-side rotary weeding means 33 A rake 36 having elasticity and having an end-shaped shape corresponding to the shoots N7 and N8 at the rear and acting as a weeding means between the shoots is screwed.

尚、上述したローリングフレーム25から垂下する支持部材47に取り付けられている回転式の除草手段31,32,33は、何れもローリングフレーム25と支持部材47
との間で高さ調節できる構成になっており、またレーキ式の除草手段35,36も前後のレーキ取り付けバー42,42に対して高さ調節可能な取り付け構成になっている。
The rotary weeding means 31, 32, and 33 attached to the support member 47 that hangs down from the rolling frame 25 are all the rolling frame 25 and the support member 47.
The rake-type weeding means 35, 36 are also configured to be height-adjustable with respect to the front and rear rake mounting bars 42, 42.

また、左右の後輪13の後方、即ち苗条N2とN3との条間及び苗条N6とN7との条間には、当該後輪13のラグによる田面の泥土の巻き込み作用によって得られる除草効果と、その後方に配設したサイドフロート27による車輪後消し作用による整地効果が期待できることから特別な除草手段を設けていない。   In addition, the weeding effect obtained by the action of the mud on the paddy surface by the lag of the rear wheel 13 is behind the left and right rear wheels 13, that is, between the ridges N2 and N3 and between the shoots N6 and N7. No special weeding means is provided since the leveling effect by the wheel-erasing action by the side float 27 disposed behind the side float 27 can be expected.

以上説明したように構成した水田用除草装置10は、横軸中心に回転する前後一対の除草車30,30からなる回転式の除草手段31,32,33と、弾性を有するレーキ式の除草手段であるレーキ35,36とで構成すると共に、前記回転式の除草手段31,32,33がレーキ式の除草手段35,36より作業車両11に近接する状態で、両除草手段31,32,33,35,36を前後に並べて配置したことによって、植付けられた苗条に沿って移動する作業車両11が水田の耕盤の変化等により左右に蛇行したとしても、前後一対の除草車30,30からなる回転式の除草手段31,32,33は、作業車両11に近接する状態で配置されているので左右に大きく振れることがなく、この回転式の除草手段31,32,33によって苗が押し倒されて損傷が発生するといった不具合が起こり難い。   The paddy weeding apparatus 10 configured as described above includes a rotary weeding means 31, 32, 33 including a pair of front and rear weeding wheels 30, 30 that rotate about a horizontal axis, and an elastic rake-type weeding means. And both the weeding means 31, 32, 33 in a state where the rotary weeding means 31, 32, 33 are closer to the work vehicle 11 than the rake type weeding means 35, 36. , 35 and 36 are arranged side by side, even if the work vehicle 11 moving along the planted shoots meanders left and right due to changes in the paddy field, etc. The rotary weeding means 31, 32, 33 are arranged close to the work vehicle 11, so that they do not shake greatly to the left and right, and the rotary weeding means 31, 32, 33 are used. Is unlikely to occur problems such as is pushed down is damage occurs.

また、回転式の除草手段31,32,33よりも作業車両11から離れた位置に配置されているレーキ式の除草手段35,36は弾性を有しており、作業車両11が左右に蛇行することによりレーキ式の除草手段35,36の先端が苗に接触しても、当該除草手段35,36の弾性によって苗の折れや引き抜きが発生することを回避できる。   Further, the rake-type weeding means 35, 36 disposed at a position farther from the work vehicle 11 than the rotary-type weeding means 31, 32, 33 have elasticity, and the work vehicle 11 meanders from side to side. As a result, even if the tips of the rake-type weeding means 35, 36 come into contact with the seedling, it is possible to prevent the seedling from being bent or pulled out due to the elasticity of the weeding means 35, 36.

更に、前記水田用除草装置10を、苗条の条間で作用する回転式の除草手段31,32,33と、苗条の株間で作用するレーキ式の除草手段35と、苗条の条間で作用するレーキ式の除草手段36とで構成し、且つその順に作業車両11の後部に配置して構成したことによって、苗条の条間に生える雑草を二種類の除草手段、即ち回転式の除草手段31,32,33とレーキ式の除草手段35でもって確実に除去することができると共に、苗条の株間に生える雑草を効率的にレーキ式の除草手段36で除去することができる。   Further, the paddy field weeding device 10 operates between the rotary weeding means 31, 32, 33 that operate between the shoots, the rake-type weeding means 35 that operates between the shoots, and the shoots. The rake-type weeding means 36 is arranged in the rear part of the work vehicle 11 in that order, so that weeds that grow between the shoots are two types of weeding means, that is, the rotary-type weeding means 31, 32 and 33 and the rake-type weeding means 35 can be surely removed, and weeds growing between the shoots can be efficiently removed by the rake-type weeding means 36.

そして、苗条の株間で作用するレーキ式の除草手段35は、苗条の条間で作用するレーキ式の除草手段36よりも作業車両11に近接するように配置してあるので、作業車両11が左右に蛇行した場合でも苗条の株間で作用するレーキ式の除草手段35の先端と苗の根部との不要な接触が起こり難くなり、両者の接触によって苗の根部の損傷が発生することを軽減できるようになっている。   The rake-type weeding means 35 acting between the shoots is arranged closer to the work vehicle 11 than the rake-type weeding means 36 acting between the shoots, so that the work vehicle 11 Even when meandering, unnecessary contact between the tip of the rake-type weeding means 35 acting between the shoots and the root of the seedling is less likely to occur, and the occurrence of damage to the root of the seedling due to the contact between both can be reduced. It has become.

また、前記水田用除草装置10は、水田に植付けられた苗条を跨いで移動可能な乗用式作業車両11の後部に備える昇降リンク機構22を介して取り付けた牽引方式の除草装置であって、当該水田用除草装置10を構成する回転式の除草手段31,32,33、及びレーキ式の除草手段35,36を、強制的に回転または揺動させる駆動機構を特別に設けなくて済むので製作コストの低減が図れる。   The paddy weeding apparatus 10 is a traction-type weeding apparatus attached via a lifting link mechanism 22 provided at the rear of a riding work vehicle 11 that can move across shoots planted in the paddy field. Manufacturing cost is eliminated because it is not necessary to provide a special drive mechanism for forcibly rotating or swinging the rotary weeding means 31, 32, 33 and the rake-type weeding means 35, 36 constituting the paddy field weeding device 10. Can be reduced.

そして、前記水田用除草装置10による除草は、植付けられた苗が活着した状態の水田の湛水深さを除草後の雑草が浮き上がる程度の深さとし、且つ苗条の条間及び株間に植生している雑草の根部の土壌を、水田用除草装置10を構成する回転式の除草手段31,32,33の除草車30,30と、レーキ式の除草手段であるレーキ35,36で撹拌しながら、当該雑草を引き抜くことができるように水田用除草装置10の高さを適宜調節することによって、湛水面に浮き上げられた雑草を枯死させて精度の高い除草作業が能率的に行えるようになる。   And the weeding by the paddy weeding device 10 is such that the submergence depth of the paddy field in which the planted seedlings are settled is deep enough to lift up the weeds after weeding, and vegetation grows between the shoots and between the shoots While stirring the soil of the roots of the weeds with the weeding vehicles 30 and 30 of the rotary weeding means 31, 32 and 33 constituting the weeding device 10 for paddy fields and the lakes 35 and 36 which are the rake-type weeding means, By appropriately adjusting the height of the paddy field weeding device 10 so that weeds can be pulled out, weeds floating on the flooded surface can be killed and highly accurate weeding work can be performed efficiently.

即ち、図1に示すように、回転式の除草手段31,32,33を構成する除草車30,30の掻き込み爪30a(図4参照)の先端と、その後方で苗条の株間で作用するレーキ式の除草手段を構成するレーキ35の先端を略同高さに調節して、当該レーキ35の先端と苗の根部との不要な接触を回避すると共に、更にその後方において苗条の条間で作用するレーキ式の除草手段を構成するレーキ36の先端を、前記レーキ35の先端よりも深く調節することによって当該レーキ36による能率的な除草作業が行えるようになっている。   That is, as shown in FIG. 1, it acts between the tips of the scraping claws 30a (see FIG. 4) of the weeding carts 30 and 30 constituting the rotary weeding means 31, 32, and 33 and behind the shoots. The tip of the rake 35 constituting the rake-type weeding means is adjusted to substantially the same height so as to avoid unnecessary contact between the tip of the rake 35 and the root of the seedling, and further behind it between the shoots. An efficient weeding operation by the rake 36 can be performed by adjusting the tip of the rake 36 constituting the acting rake-type weeding means deeper than the tip of the rake 35.

ところで、図3は、左右のサイドフロート27を一体的に支承する支持部材46,46を、その取り付けブラケット51,51から取り外した後に、水田の溝切作業を行うことができる溝切機52,52を、支持部材53,53を介して当該取り付けブラケット51,51に装着した状態を示したものである。   By the way, FIG. 3 shows a grooving machine 52 that can perform grooving work for paddy fields after the support members 46, 46 that integrally support the left and right side floats 27 are removed from the mounting brackets 51, 51. The state where 52 is attached to the mounting brackets 51 and 51 via the support members 53 and 53 is shown.

更に詳しくは、取り付けブラケット51,51は、ローリングフレーム25を側面視で前後に挟み込んだ状態でボルト54,54を介して螺設すべく、コの字状断面を有する前後の挟持部材51a,51b備えると共に、後側の挟持部材51bには、支持部材53を挿通可能な支持枠51cを一体的に固設している。そして、支持枠51cに支持部材53を挿通した状態で、位置決めピン55と固定ボルト56によって溝切機52を所望の高さ位置で固定することができるようになっている。   More specifically, the mounting brackets 51 and 51 have front and rear holding members 51a and 51b having a U-shaped cross section so as to be screwed through the bolts 54 and 54 in a state where the rolling frame 25 is sandwiched front and rear in a side view. In addition, a support frame 51c through which the support member 53 can be inserted is integrally fixed to the rear holding member 51b. The grooving machine 52 can be fixed at a desired height position by the positioning pins 55 and the fixing bolts 56 with the support member 53 inserted through the support frame 51c.

また、溝切機52,52は、上方及び後方へ拡開する左右の側板52a,52bの下端部を連結する共に、その先端には、支持部材53,53の取り付け座52cを立設している。この取り付け座52cの下部と支持部材53の下端とをボルト57を介して連結すると共に、該ボルト57を中心(回動支点)とする取り付け座52cの上部に設けた円弧状の長孔Hが許容する溝切機52,52の回動調整が可能であり、所望の位置に溝切機52,52を回動させた後、ボルト58を介して当該溝切機52,52を位置決め固定することができるようになっている。尚、図4は、溝切機52,52を水田用除草装置10に装着した状態を示す平面図である。   Further, the grooving machines 52 and 52 connect the lower end portions of the left and right side plates 52a and 52b that expand upward and rearward, and the mounting seats 52c of the support members 53 and 53 are erected at the tips. Yes. A lower portion of the mounting seat 52c and the lower end of the support member 53 are connected via a bolt 57, and an arc-shaped long hole H provided at the upper portion of the mounting seat 52c with the bolt 57 as a center (rotation fulcrum). It is possible to adjust the allowable turning of the grooving machines 52, 52, and after rotating the grooving machines 52, 52 to a desired position, the grooving machines 52, 52 are positioned and fixed via bolts 58. Be able to. 4 is a plan view showing a state in which the grooving machines 52, 52 are mounted on the paddy field weeding device 10. FIG.

以上説明したように、乗用式作業車両11の後部に装着する水田用除草装置10を、横軸中心に回転する前後一対の除草車30,30からなる回転式の除草手段31,32,33と、弾性を有するレーキ式の除草手段35,36とで構成すると共に、当該水田用除草装置10に溝切機52,52を装着可能に構成したことによって、1台の乗用式作業車両11で水田に生える雑草の除去と水田の溝切作業とを行なえるようになり、特に水田における除草作業の終盤期においては、水田に生える雑草の除去と水田の溝切作業とを同時に行うこともできるので作業効率が大幅に向上する。   As described above, the paddy field weeding device 10 mounted on the rear portion of the riding work vehicle 11 is composed of rotary weeding means 31, 32, 33 including a pair of front and rear weeding vehicles 30, 30 that rotate about the horizontal axis. The rake-type weeding means 35 and 36 having elasticity and the grooving machines 52 and 52 can be mounted on the paddy weeding device 10 so that one paddy-type work vehicle 11 can be used as a paddy field. It is possible to remove weeds growing on the paddy field and grooving the paddy field, especially in the final stage of weeding work on the paddy field, so that weed removal on the paddy field and grooving work on the paddy field can be performed simultaneously. Work efficiency is greatly improved.

即ち、水田用除草装置10に支持し、且つ左右の後輪13の後方位置に配されている左右のサイドフロート(整地フロート)27を取り外して、高さ調節可能な溝切機52を装着することによって、この溝切機52を左右の後輪13の走行溝に沿わせながら安定した状態で水田の溝切作業が行なえるようになり、更に水田に生える雑草の除去と水田の溝切作業とを同時に行うことができると共に、溝切機52の高さ調節により当該溝切機52による単独での水田の溝切作業も行なえることから作業効率を大幅に向上させることができる。   That is, the left and right side floats (leveling floats) 27 supported by the paddy weeding device 10 and disposed at the rear positions of the left and right rear wheels 13 are removed, and the height-adjustable grooving machine 52 is mounted. Thus, the grooving machine 52 can be grooved in the paddy field in a stable state while keeping the grooving machine 52 along the running grooves of the left and right rear wheels 13, and the weeds growing in the paddy field and the grooving work of the paddy field can be performed. Since the grooving operation of the paddy field by the grooving machine 52 can be performed by adjusting the height of the grooving machine 52, the working efficiency can be greatly improved.

また、回転式の除草手段31,32,33を構成する前後一対(二連式)の除草車30,30は、複数の掻き込み爪30a(図5参照)と田面との接地抵抗によって走行機体14の進行方向に転動するが、両除草車30,30が単独で転動することにより、その掻き込み爪30aが同期して転動する場合があり、その場合は、両除草車30,30による
十分な除草効果が得られなくなるので、図5に示すように、両除草車30,30を歯数の異なるスプロケットS1,S2によりチェン伝動させて、両除草車30,30に周速差が生じるように構成してもよい。
Further, a pair of front and rear (double-running) weeding vehicles 30 and 30 constituting the rotary weeding means 31, 32 and 33 is a traveling machine body due to a grounding resistance between a plurality of scraping claws 30 a (see FIG. 5) and the rice field. 14, but the two weeders 30, 30 may roll independently, and the scraping claws 30 a may roll synchronously. Since the sufficient weeding effect by 30 cannot be obtained, as shown in FIG. 5, both the weeding wheels 30, 30 are chain-transmitted by sprockets S 1, S 2 having different number of teeth, and the circumferential speed difference between both weeding vehicles 30, 30 is increased. You may comprise so that may arise.

即ち、前側除草車30のスプロケットS1と後側除草車30のスプロケットS2の歯数を、S1<S2とすると共に両スプロケットS1,S2にチェン61を巻回することにより、前側の除草車30に対する後側の除草車30の周速が遅くなるように構成して、この後側の除草車30のブレーキ作用により田面の撹拌効果を向上させてもよい。尚、上述したチェン伝動による前側除草車30と後側除草車30の掻き込み爪30aのセット位置に位相差を設けて、両者30,30の掻き込み爪30aが同期して転動しないように構成することも可能である。   That is, the number of teeth of the sprocket S1 of the front weed truck 30 and the sprocket S2 of the rear weed truck 30 is set to S1 <S2, and the chain 61 is wound around both the sprockets S1 and S2, thereby It may be configured such that the peripheral speed of the rear weed truck 30 is reduced, and the stirring effect of the paddy surface may be improved by the braking action of the rear weed truck 30. It should be noted that a phase difference is provided at the set position of the scraping claw 30a of the front weed truck 30 and the rear weed truck 30 by the chain transmission described above so that the scraping claws 30a of both 30 and 30 do not roll synchronously. It is also possible to configure.

また、図6及び図7に示すように、昇降リンク機構22の終端部に装着したヒッチホルダ23の下部中央には、ローリング軸23aが後方に向けて突設してあり、このローリング軸23aにツールホルダ62をローリング可能に支承すると共に、当該ツールホルダ62の上部アーム63に固設した上方に凹の断面形状を有する支持部材63aと、該支持部材63aに支持した角パイプ製のローリングフレーム25を上方から挟持して螺着すべく、下方に凹の断面形状を有する固定部材64を備えている。   Further, as shown in FIGS. 6 and 7, a rolling shaft 23a protrudes rearward from the center of the lower portion of the hitch holder 23 attached to the end portion of the lifting link mechanism 22, and a tool is provided on the rolling shaft 23a. A holder 62 is supported so as to be able to roll, and a support member 63a having a concave cross-sectional shape is fixed to the upper arm 63 of the tool holder 62, and a rolling frame 25 made of a square pipe supported by the support member 63a is provided. A fixing member 64 having a concave cross-sectional shape is provided below in order to be clamped and screwed from above.

そして、上述した上部アーム63は、平面視でコの字状の曲げ形状を有し、その両側前端部をツールホルダ62の前フレーム62aの略中間部から突設させた支軸62bに支承すると共に、当該上部アーム63の終端部には、除草手段31の支持部材47を挿通可能な支持枠63bを一体的に固設してあって、この支持枠63bに支持部材47を挿通した状態で、位置決めピン65と固定ボルト66によって回転式の除草手段31を所望の高さ位置で固定することができるようになっている。   The above-described upper arm 63 has a U-shaped bent shape in plan view, and is supported by a support shaft 62 b that protrudes from a substantially middle portion of the front frame 62 a of the tool holder 62 at both side front ends. At the end of the upper arm 63, a support frame 63b through which the support member 47 of the weeding means 31 can be inserted is fixed integrally, and the support member 47 is inserted into the support frame 63b. The rotary weeding means 31 can be fixed at a desired height position by the positioning pin 65 and the fixing bolt 66.

更に、ツールホルダ62の前フレーム62a下部の左右両側には、支持アーム62c,62cが後方に向けて延設してあり、この支持アーム62c,62cの後端に横設した支軸67と、該支軸67の中間部に連結すると共に、上部アーム63の前後方向略中間部に横設した支軸68の中間部に螺合するネジ式調節機構を備えるハンドル69によって、支軸62bを支点とする当該上部アーム63の上下揺動手段71を構成している。即ち、この上下揺動手段71によって支軸62bを支点とする除草手段31の高さ調節が可能になる。   Further, support arms 62c and 62c extend rearward on both the left and right sides of the lower portion of the front frame 62a of the tool holder 62, and a support shaft 67 horizontally provided at the rear ends of the support arms 62c and 62c, The support shaft 62b is supported by a handle 69 having a screw-type adjusting mechanism that is coupled to the intermediate portion of the support shaft 67 and is screwed into the intermediate portion of the support shaft 68 that is provided in a substantially intermediate portion in the front-rear direction of the upper arm 63. The upper and lower rocking means 71 of the upper arm 63 is configured. That is, the vertical swinging means 71 can adjust the height of the weeding means 31 with the support shaft 62b as a fulcrum.

尚、上述したツールホルダ62の上部アーム63には、図8に示すような断面形状を有するバランスウェイト72,72を、左右対称に上方から容易に嵌着できるようになっており、またバランスウェイト72,72の嵌着位置が水田用除草装置10の略重心位置に相当するので安定性が良好である。   It should be noted that balance weights 72, 72 having a cross-sectional shape as shown in FIG. 8 can be easily fitted from left to right on the upper arm 63 of the tool holder 62 described above. Since the fitting positions 72 and 72 correspond to the approximate center of gravity of the paddy field weeding device 10, the stability is good.

また、図9に示すように、支持フレーム41,41の終端部に取り付けたブラケット73のガイド孔73aに挿通してなる左右一対のスタンド43,43は、実線で示す上方に退避した除草作業姿勢と二点鎖線で示す水田用除草装置10の支持姿勢(スタンド姿勢)とに変更することができる。更に両スタンド43,43の前方で機体幅方向の略同一位置に設けられている左右のサイドフロート27,27も、実線で示す除草作業姿勢と二点鎖線で示す水田用除草装置10の支持姿勢とに変更できるので、両スタンド43,43と左右のサイドフロート27,27による4本足の安定した状態での水田用除草装置10の支持が可能になり、それによって当該水田用除草装置10を昇降リンク機構22を介して下降させる際やヒッチホルダ23から取り外したりする際に、誤って回転式の除草手段31,32,33の除草車30、即ち掻き込み爪30aが破損するといった不具合が起こり難くなる。   Further, as shown in FIG. 9, the pair of left and right stands 43, 43 inserted through the guide holes 73a of the brackets 73 attached to the end portions of the support frames 41, 41 are in a weeding work posture retracted upward as indicated by a solid line. And a supporting posture (stand posture) of the paddy weeding device 10 indicated by a two-dot chain line. Further, the left and right side floats 27 and 27 provided at substantially the same position in the body width direction in front of both the stands 43 and 43 also support the weeding posture 10 shown in the solid line and the paddy field weeding device 10 shown in the two-dot chain line. Therefore, it is possible to support the paddy weeding apparatus 10 in a stable state of four legs by both the stands 43, 43 and the left and right side floats 27, 27, and thereby the paddy weeding apparatus 10 can be When descending via the elevating link mechanism 22 or when removing from the hitch holder 23, it is unlikely that the weeding car 30, that is, the claw claw 30a of the rotary weeding means 31, 32, 33 is accidentally damaged. Become.

尚、左右一対のスタンド43,43には、その上下方向に三箇所のピン孔43a,43b,43cが設けてあって、除草作業時には、ブラケット73のガイド孔73aにスタンド43を挿通した状態で、ブラケット73の上方において下段の穴43cにピン74を嵌挿し、次いでスタンド43を自由降下させながらピン74をブラケット73に当接させることによってスタンド43の下げストッパーとして作用させ、この状態(上方に退避した除草作業姿勢)で固定ボルト75を介してスタンド43を位置固定することができるようにしている。   The pair of left and right stands 43, 43 are provided with three pin holes 43a, 43b, 43c in the vertical direction, and the stand 43 is inserted into the guide hole 73a of the bracket 73 during the weeding operation. Then, the pin 74 is inserted into the lower hole 43c above the bracket 73, and then the stand 74 is lowered freely so that the pin 74 comes into contact with the bracket 73 to act as a lowering stopper for the stand 43. The position of the stand 43 can be fixed through the fixing bolt 75 in the retracted weeding posture.

一方、両スタンド43,43を支持姿勢(スタンド姿勢)に位置決めする際は、ブラケット73のガイド孔73aにスタンド43を挿通した状態で、ブラケット73の下方において中段の穴43bにピン74を嵌挿し、次いでスタンド43をブラケット73のガイド孔73aに案内しながら上昇させてピン74がブラケット73に当接した時、固定ボルト75を介してスタンド43を位置固定すればよい。   On the other hand, when positioning both the stands 43 and 43 in the support posture (stand posture), the pin 74 is inserted into the middle hole 43 b below the bracket 73 with the stand 43 inserted into the guide hole 73 a of the bracket 73. Then, when the stand 43 is raised while being guided to the guide hole 73 a of the bracket 73 and the pin 74 comes into contact with the bracket 73, the position of the stand 43 may be fixed via the fixing bolt 75.

また、ブラケット73のガイド孔73aにスタンド43を挿通した状態で、当該スタンド43に設けた上段の孔43aにピンまたはボルトを常時嵌挿しておけば、当該スタンド43を除草作業姿勢と支持姿勢(スタンド姿勢)に調節固定する際の脱落防止手段として作用する。尚、同様の脱落防止手段を左右のサイドフロート27,27を支持する支持部材46の上部に構成してもよい。   Further, when the stand 43 is inserted into the guide hole 73a of the bracket 73 and a pin or a bolt is always fitted and inserted into the upper hole 43a provided in the stand 43, the stand 43 is placed in a weeding work posture and a support posture ( Acts as a drop-off prevention means when adjusting and fixing to the stand posture. Similar drop-off prevention means may be provided on the upper portion of the support member 46 that supports the left and right side floats 27 and 27.

水田用除草装置を作業車両の後方に取り付けた状態を示す側面図。The side view which shows the state which attached the weeding apparatus for paddy fields behind the work vehicle. 同上平面図。FIG. 溝切機の装着状態を示す側面図。The side view which shows the mounting state of a grooving machine. 水田用除草装置に溝切機を装着した状態を示す平面図。The top view which shows the state which mounted | wore the groove cutting machine with the weeding apparatus for paddy fields. 除草手段の構成を示す側面図。The side view which shows the structure of a weeding means. ツールホルダへの除草手段の取り付け構成を示す側面図Side view showing the configuration for attaching the weeding means to the tool holder 図5におけるA矢視図。A arrow view in FIG. 図5におけるB−B断面図。BB sectional drawing in FIG. スタンドとサイドフロートの高さ位置調整方法を示す側面図。The side view which shows the height position adjustment method of a stand and a side float.

符号の説明Explanation of symbols

10 水田用除草装置
11 作業車両
12 前輪
13 後輪
14 走行機体
27 整地フロート(サイドフロート)
52 溝切機
DESCRIPTION OF SYMBOLS 10 Weeding device for paddy field 11 Work vehicle 12 Front wheel 13 Rear wheel 14 Traveling machine body 27 Leveling float (side float)
52 Grooving machine

Claims (3)

前輪(12)と後輪(13)に支持される走行機体(14)を有し、且つ植付けられた苗条を跨いで移動可能な作業車両(11)に装着する水田用除草装置(10)であって、該水田用除草装置(10)に溝切機(52,52)を装着したことを特徴とする水田用除草装機。   A paddy weeding device (10) mounted on a work vehicle (11) having a traveling machine body (14) supported by front wheels (12) and rear wheels (13) and movable across planted shoots. A paddy weeding machine comprising a paddle weeding device (10) and a grooving machine (52, 52). 走行機体(14)の後部に装着した水田用除草装置(10)であって、後輪(13)の後方位置に溝切機(52)を装着した請求項1に記載の水田用除草装置。   The paddy field weeding device (10) mounted on the rear part of the traveling machine body (14), wherein the groove cutting machine (52) is mounted at a rear position of the rear wheel (13). 水田用除草装置(10)に支持した整地フロート(27)を取り外して、高さ調節可能に溝切機(52)を装着した請求項1または請求項2に記載の水田用除草装置。   The weeding device for paddy fields according to claim 1 or 2, wherein the leveling float (27) supported by the weeding device for paddy fields (10) is removed, and a grooving machine (52) is mounted so that the height can be adjusted.
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016144414A (en) * 2015-02-06 2016-08-12 株式会社丸山製作所 Paddy field ditcher
JP2016167983A (en) * 2015-03-11 2016-09-23 ヤンマー株式会社 Farm implement and farm working machine
CN113039880A (en) * 2019-12-27 2021-06-29 浙江星莱和农业装备有限公司 Weeding mechanism of weeder
CN114747561A (en) * 2022-04-27 2022-07-15 中垦种业股份有限公司 Efficient weeding method for wheat field

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103314663B (en) * 2013-05-28 2015-06-24 河南理工大学 Intelligentized intra-row and intra-plant weeding device for crops in seedling stage

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JPH069403U (en) * 1992-07-16 1994-02-08 三菱農機株式会社 Grooved body of paddy gutter
JP2000060202A (en) * 1998-08-19 2000-02-29 Iseki & Co Ltd Coupling device for ditch-digging tool
JP2005287366A (en) * 2004-03-31 2005-10-20 Kyuuhoo:Kk Rice paddy weeder

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JPH0392901U (en) * 1990-01-08 1991-09-20
JPH069403U (en) * 1992-07-16 1994-02-08 三菱農機株式会社 Grooved body of paddy gutter
JP2000060202A (en) * 1998-08-19 2000-02-29 Iseki & Co Ltd Coupling device for ditch-digging tool
JP2005287366A (en) * 2004-03-31 2005-10-20 Kyuuhoo:Kk Rice paddy weeder

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016144414A (en) * 2015-02-06 2016-08-12 株式会社丸山製作所 Paddy field ditcher
JP2016167983A (en) * 2015-03-11 2016-09-23 ヤンマー株式会社 Farm implement and farm working machine
CN113039880A (en) * 2019-12-27 2021-06-29 浙江星莱和农业装备有限公司 Weeding mechanism of weeder
CN114747561A (en) * 2022-04-27 2022-07-15 中垦种业股份有限公司 Efficient weeding method for wheat field

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