JP2010004749A - Land-leveling rotor and land-leveling apparatus equipped with land-leveling rotor - Google Patents

Land-leveling rotor and land-leveling apparatus equipped with land-leveling rotor Download PDF

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JP2010004749A
JP2010004749A JP2008164524A JP2008164524A JP2010004749A JP 2010004749 A JP2010004749 A JP 2010004749A JP 2008164524 A JP2008164524 A JP 2008164524A JP 2008164524 A JP2008164524 A JP 2008164524A JP 2010004749 A JP2010004749 A JP 2010004749A
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leveling
land
unit rotating
rotating body
unit
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Takuya Okamoto
拓也 岡本
Yoshihide Miyanishi
吉秀 宮西
Kazuyoshi Yamauchi
一喜 山内
Yoshikiyo Nakagawa
善清 中川
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Kubota Corp
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Kubota Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a land-leveling rotor hardly allowing foreign substance from being nipped between land-leveling action parts of neighboring unit rotating bodies by simple assembly of only inserting a plurality of the unit rotating bodies into a rotary spindle without inserting a collar therebetween, and to provide a land-leveling apparatus. <P>SOLUTION: The land-leveling rotor is equipped with the unit rotating bodies having boss parts fitting on the rotary spindle, and the land-leveling action parts connected to the boss parts in rows and positioned at the outside in the diameter direction, wherein the length of the boss part in the rotary shaft direction of the unit rotating body may be longer than the length of the land-leveling part in the rotary shaft direction. The land-leveling apparatus has a space not allowing the foreign substance to be nipped between the neighboring land-leveling action parts by inserting a plurality of the land-leveling rollers onto the rotary spindle. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、回転支軸に複数の単位回転体を装着して整地用回転体を構成するための整地用ロータ、並びに回転支軸に複数の単位回転体(整地用ロータ)を装着してなる整地用回転体を配備した整地装置に関する。   The present invention comprises a leveling rotor for constituting a leveling rotator by mounting a plurality of unit rotating bodies on a rotating spindle, and a plurality of unit rotating bodies (leveling rotor) mounted on a rotating spindle. The present invention relates to a leveling device provided with a leveling rotator.

回転支軸に複数の単位回転体(整地用ロータ)を装着してなる整地用回転体を配備した整地装置は、走行機体の後部に連結された苗植付け装置や直播機などの水田作業装置とともに装備して、車輪跡や足跡などを整地用回転体の作用で無くすことで良好な植付けや播種を行うことができるように利用されている(例えば、特許文献1参照)。
特開2006−304647号公報
A leveling device equipped with a rotary body for leveling, which is composed of a plurality of unit rotary bodies (leveling rotors) mounted on a rotating spindle, along with paddy field work devices such as seedling planting devices and direct seeding machines connected to the rear part of the traveling machine body It is used so that good planting and sowing can be performed by equipping and eliminating wheel marks and footprints by the action of the leveling rotator (see, for example, Patent Document 1).
JP 2006-304647 A

特許文献1に記載のものは、機体の左右方向に配置された回転支軸46に、その左右中央部に左右2個の単位回転体55をカラー58を介して挿通するとともに、その左右に複数の単位回転体55どうしを接当させた状態で回転支軸46に挿通した代掻き用回転体40群を配備した整地装置が示されている。特許文献1に示された整地装置は、回転支軸46に、カラー58を介して、又は、直接単位回転体55のボス部55bの端面どうしを接当させた状態で挿通しているので、組付けに際しては回転支軸46にカラー58及び複数の単位回転体55を順次詰めて挿通するだけでよく、組付け作業が簡単に行える利点があった。しかし、特許文献1に示された単位回転体55は、回転支軸46に嵌合するボス部55bの長さと整地作用部55aの長さとが同じ長さに造られていたため、機体左右中央部に配置された単位回転体55のように、単位回転体55と単位回転体55との間にカラー58を介在させて隣接する単位回転体間に環状凹部60の隙間を形成した場合は、当該隙間を通って前方の泥水が草やワラ屑などの浮遊物や解された切り株などとともに後方に通り抜けるが、隣接する単位回転体55どうしを接当配置した回転体群では、単位回転体55どうしが隣接する整地作用部55aの間には殆ど隙間はなく、泥水がその間を通って後方に移動させることができないのみならず、隣接する整地作用部55a間に夾雑物が挟まりやすく、又、挟まった夾雑物の除去に手間取るという不都合があった。   In the one disclosed in Patent Document 1, two left and right unit rotating bodies 55 are inserted through a collar 58 in a central portion of the left and right of the rotating support shaft 46 arranged in the left and right direction of the machine body, and a plurality of left and right unit rotating bodies 55 are provided on the left and right sides. A ground leveling device is shown in which a group of rotary scraping bodies 40 that are inserted through a rotary spindle 46 in a state where the unit rotary bodies 55 are in contact with each other. Since the leveling device shown in Patent Document 1 is inserted into the rotation support shaft 46 through the collar 58 or directly in a state where the end faces of the boss portions 55b of the unit rotating body 55 are in contact with each other, At the time of assembling, the collar 58 and the plurality of unit rotating bodies 55 need only be sequentially packed and inserted into the rotating support shaft 46, and there is an advantage that the assembling work can be easily performed. However, since the unit rotator 55 shown in Patent Document 1 is constructed so that the length of the boss portion 55b fitted to the rotation support shaft 46 and the length of the leveling action portion 55a are the same length, When the gap of the annular recess 60 is formed between the adjacent unit rotating bodies by interposing the collar 58 between the unit rotating bodies 55 and the unit rotating bodies 55 like the unit rotating bodies 55 arranged in the The muddy water in the front passes through the gaps with the floating matter such as grass and straw scraps and the stubs that have been broken, but in the rotating body group in which the adjacent unit rotating bodies 55 are in contact with each other, the unit rotating bodies 55 are connected to each other. There is almost no gap between the adjacent leveling action portions 55a, and not only can muddy water be moved backward through the gap, but also impurities are easily caught between the adjacent leveling action portions 55a. Trash There is a disadvantage that the time-consuming to removed by.

本発明は、従来構造と同様に隣接する単位回転体のボス部どうしを接当するように、回転支軸に単位回転体を詰めて挿通させて回転体群を構成するようにして隣接する単位回転体間にカラーを介在させることなく簡単に組み付けられるようにしながら、隣接する単位回転体の整地作用部間に夾雑物が挟まらない、又は挟まり難い回転体群とすること、及びこのような回転体群とすることのできる整地用ローラを得ることを目的とする。   The present invention is similar to the conventional structure in that the adjacent unit rotating bodies are arranged so that the bosses of the adjacent unit rotating bodies are in contact with each other so as to form a rotating body group by inserting the unit rotating bodies into the rotation support shafts and inserting them. It is possible to easily assemble without interposing a collar between the rotating bodies, and to make a rotating body group in which impurities are not pinched between the leveling action portions of the adjacent unit rotating bodies or are difficult to pinch, and such An object of the present invention is to obtain a leveling roller that can be a rotating body group.

第1の発明である整地用ロータの発明は、回転支軸に複数の単位回転体を装着して整地用回転体を構成するための整地用ロータであって、単位回転体には回転支軸に嵌合するボス部とこのボス部に連設して径方向外方に位置する整地作用部とを備え、単位回転体の回転軸芯方向におけるボス部の長さを回転軸芯方向における整地作用部の長さよりも長くしたものである。   A ground leveling rotor according to a first aspect of the present invention is a leveling rotor for constituting a leveling rotary body by mounting a plurality of unit rotary bodies on a rotary spindle, and the unit rotary body includes a rotary spindle. A boss portion that is fitted to the boss portion, and a leveling action portion that is continuous with the boss portion and is positioned radially outward, and the length of the boss portion in the rotation axis direction of the unit rotating body is set to the leveling in the rotation axis direction. It is longer than the length of the action part.

第1の発明によれば、単位回転体(整地用ロータ)の回転軸芯方向における整地作用部の長さよりもボス部の長さの方を長くしてあるので、ロータとロータの間にわざわざカラーを介在させなくても、回転支軸に複数の整地用ロータのボス部どうしが接当するように詰めて挿通するだけで、隣接するロータの整地作用部どうしの間に隙間が形成される。このような隙間が形成された整地用回転体を備えた整地装置を機体に装備して整地作業を行うと、前記隙間を通って泥水が後方に移動することができるとともに、従来の整地装置のように、隣接する整地作用部間に夾雑物が詰まるという不都合が軽減ないし解消される。   According to the first aspect of the present invention, the length of the boss portion is longer than the length of the leveling action portion in the direction of the rotation axis of the unit rotating body (leveling rotor), so bother between the rotor and the rotor. Even if no collar is interposed, a gap is formed between the leveling action portions of adjacent rotors by simply inserting and inserting the boss portions of the plurality of leveling rotors into contact with the rotating support shaft. . When leveling equipment equipped with a leveling rotator with such a gap formed in the airframe and performing leveling work, muddy water can move rearward through the gap, and the conventional leveling device As described above, the inconvenience that impurities are clogged between adjacent leveling action portions is reduced or eliminated.

従って、第1の発明によると、整地装置による泥水の後方への流れが改善されるとともに、隣接する整地作用部間に夾雑物が詰まるという不都合も軽減ないし解消され、作業後の手入れも楽に行えるに至った。   Therefore, according to the first invention, the backward flow of the muddy water by the leveling device is improved, and the inconvenience that impurities are clogged between adjacent leveling action parts is reduced or eliminated, and the maintenance after the work can be performed easily. It came to.

第2の発明である整地装置の発明は、回転支軸に複数の単位回転体を装着してなる整地用回転体を装備した整地装置において、
単位回転体には回転支軸に嵌合したボス部とこのボス部に連設して径方向外方に位置する整地作用部とを備え、回転支軸に隣接する単位回転体をこれのボス部どうしを接当させた状態で装着するとともに、ボス部どうしを接当させた装着状態で隣接する整地作用部間に隙間を形成してあることを特徴とする。
The invention of the leveling device according to the second aspect of the present invention is a leveling device equipped with a leveling rotator comprising a plurality of unit rotators mounted on a rotating spindle.
The unit rotating body includes a boss portion fitted to the rotating support shaft and a leveling action portion that is connected to the boss portion and is positioned radially outward. The unit rotating body adjacent to the rotating support shaft is connected to the boss. It mounts in the state which contacted the parts, and the clearance gap was formed between the adjacent leveling action parts in the mounting state which contacted the boss | hub parts.

第2の発明によれば、回転支軸に対して、隣接する単位回転体のボス部どうしを接当させた装着状態で隣接する整地作用部間に隙間を形成するようにしてあるので、単位回転体間にカラーを介在させなくても前記隙間を通って泥水が後方に移動することができるとともに、従来の整地装置のように、隣接する整地作用部間に夾雑物が詰まるという不都合が軽減ないし解消される。   According to the second invention, since the gap is formed between the adjacent leveling action portions in the mounted state in which the boss portions of the adjacent unit rotating bodies are in contact with the rotation support shaft, The muddy water can move backward through the gap without interposing a collar between rotating bodies, and the inconvenience that impurities are clogged between adjacent leveling action parts as in the conventional leveling device is reduced. Or it is solved.

従って、第2の発明によると、簡単な構造の改良で、整地装置における隣接する単位回転体の整地作用部間に形成した隙間によって後方に流れる泥水の流れが改善されるとともに、隣接する整地作用部間に夾雑物が詰まるという不都合も軽減ないしは解消できた。そして、作業後の手入れも楽に行えるに至った。   Therefore, according to the second invention, the flow of muddy water flowing backward is improved by the clearance formed between the leveling action portions of the adjacent unit rotating bodies in the leveling device, and the adjacent leveling action is improved by a simple structure improvement. The inconvenience that impurities were clogged between the parts could be reduced or eliminated. And it came to be able to do care after work easily.

第3の整地装置の発明は、上記第2の整地装置の発明において、単位回転体として請求項1記載の整地用ロータを適用したものである。   The invention of the third leveling device is the invention of the second leveling device, wherein the leveling rotor according to claim 1 is applied as a unit rotating body.

第3の発明によれば、単位回転体として回転支軸方向におけるボス部の長さを整地作用部の長さよりも長くした整地用ロータを用いて、整地用ロータのボス部どうしを接当させた装着状態で隣接する整地作用部間に隙間を形成するようにしたので、整地用ロータ間にカラーを介在させなくても前記隙間を通って泥水が後方に移動することができるとともに、従来の整地装置のように、隣接する整地作用部間に夾雑物が詰まるという不都合が軽減ないし解消される。   According to the third aspect of the present invention, the leveling rotor in which the length of the boss portion in the direction of the rotation spindle is longer than the length of the leveling action portion is used as the unit rotating body, and the boss portions of the leveling rotor are brought into contact with each other. Since the gap is formed between the adjacent leveling operation parts in the mounted state, the muddy water can move backward through the gap without interposing the collar between the leveling rotors, Like the leveling device, the inconvenience that impurities are clogged between adjacent leveling action portions is reduced or eliminated.

従って、第3の発明によると、整地装置における隣接するロータの整地作用部間に形成した隙間によって後方に流れる泥水の流れが改善されるとともに、隣接する整地作用部間に夾雑物が詰まるという不都合も軽減ないしは解消され、作業後の手入れも楽に行えるに至った。   Therefore, according to the third aspect of the present invention, the flow of muddy water flowing backward is improved by the gap formed between the leveling action portions of adjacent rotors in the leveling device, and impurities are clogged between the adjacent leveling action portions. Has been reduced or eliminated, making it easier to clean after work.

第4の発明は、上記第2または3の発明において、整地用回転体の回転方向下手側ほど単位回転体どうしの隣接する整地作用部間の隙間の幅が広くなるように構成してある。   According to a fourth aspect of the present invention, in the second or third aspect of the invention, the width of the gap between adjacent leveling action portions of the unit rotary bodies is increased toward the lower side in the rotational direction of the leveling rotary body.

整地用回転体の隣接する整地作用部間の隙間が平行で狭い場合や、回転方向下手側の隙間が狭くなっていると、夾雑物が更なる夾雑物で押し込まれた場合、夾雑物が隙間の間に強く咬み込んでより一層除去し難くなるが、第4の発明によれば、前記隙間の幅が、整地用回転体の回転方向下手側ほど広くなるようにしてあるので、隙間に入った夾雑物が抵抗なく通り抜けることができ、詰まりを生じさせることを極力回避できる利点がある。   If the gap between adjacent leveling action parts of the rotary body for leveling is parallel and narrow, or if the gap on the lower side in the rotational direction is narrow, the foreign object will be a gap if the foreign object is pushed in with further foreign objects. However, according to the fourth invention, the width of the gap is made wider toward the lower side in the rotational direction of the leveling rotator. Further, there is an advantage that it is possible to avoid the occurrence of clogging as much as possible because foreign impurities can pass through without resistance.

第5の発明は、上記第2〜4のいずれかの発明において、整地用回転体の横外側に近接して整地用回転体の前方横外方への泥流れを抑制する泥流れ抑制部材を配設してある。   In a fifth aspect of the present invention, in any one of the second to fourth aspects of the present invention, there is provided a mud flow suppressing member that suppresses a mud flow toward the front side and the outer side of the leveling rotator near the lateral outer side of the leveling rotator. It is arranged.

機体を前進させながら整地作用をしていると、整地用回転体の前方の泥水が横外側に押し流される。整地作用と同時に苗植付け作業や播種作業をする場合、整地用回転体による泥水の横外側への押出す作用が、先に作業をした植付けた苗や播種に対して、苗倒しや種子を浮遊させるといった悪影響を及ぼす欠点があるが、第5の発明によれば、整地用回転体の横外側に近接して整地用回転体の前方の横外方への泥流れを抑制する泥流れ抑制部材を配設してあるので、泥流れ抑制部材によって整地用回転体前方の泥水を横外側に押し流すことを抑制することができ、隣接苗等への悪影響を抑えることができる。又、畦際などで横外方の異物(予備苗箱)等が整地用回転体に巻き込まれて整地用回転体や異物の双方に損傷を与えるという不都合が回避できるカバーにも、泥流れ抑制部材がなりうる利点がある。   If the leveling action is performed while the aircraft is moving forward, the muddy water in front of the leveling rotator is washed away laterally outward. When seedling planting work or sowing work is performed simultaneously with the leveling action, the action of pushing the muddy water to the lateral outside by the rotating body for leveling floats the seedlings and seeds against the seedlings and seeding that were planted earlier. However, according to the fifth aspect of the present invention, the mud flow suppressing member that suppresses the mud flow to the lateral outer side in front of the leveling rotator close to the lateral outer side of the leveling rotator. Therefore, it is possible to suppress the muddy water in front of the leveling rotator from being pushed to the lateral outer side by the mud flow suppressing member, and it is possible to suppress adverse effects on adjacent seedlings and the like. In addition, mud flow control is also applied to a cover that can avoid the inconvenience that foreign matter (preliminary seedling box) or the like outside is caught in the leveling rotator and damages both the leveling rotator and the foreign matter due to dredging. There is an advantage that the member can be.

図1に施肥装置付き田植機の全体側面が示されている。この田植機は、操向可能な前輪1および操向不能な後輪2を備えて4輪駆動で走行する走行機体3の後部に油圧シリンダ5によって駆動される平行四連リンク構造の昇降リンク機構6が装備され、この昇降リンク機構6の後端下部に6条植え仕様の苗植付け装置4がローリング可能に連結された基本構造を備えている。また、走行機体3の後部に施肥装置7が備えられるとともに、走行機体3の前部左右には予備苗を3枚ずつ収容する予備苗のせ台13が立設配備されている。   The whole side surface of the rice transplanter with a fertilizer application is shown by FIG. This rice transplanter includes a front and rear steering wheel 1 and a rear wheel 2 that cannot be steered, and a lifting / lowering link mechanism of a parallel quadruple link structure driven by a hydraulic cylinder 5 at the rear of a traveling machine body 3 that travels by four-wheel drive. 6 and equipped with a basic structure in which a seedling planting device 4 of a six-row planting specification is connected to the lower end of the lifting link mechanism 6 so as to be able to roll. Further, a fertilizer device 7 is provided at the rear part of the traveling machine body 3, and on the left and right of the front part of the traveling machine body 3, preliminary seedling raising bases 13 for storing three spare seedlings are installed upright.

前記走行機体3の前部にはエンジン8が搭載され、その出力が前後進の切り換えが可能な静油圧式無段変速装置(HST)からなる主変速装置9に伝達され、その変速出力がミッションケース10に入力されて走行系と作業系に分岐される。走行系の動力は図示されない副変速装置でギヤ変速された後、ミッションケース10に装備された前輪1に伝達されるとともに、後部伝動ケース11に装備された後輪2に伝達されるようになっている。また、分岐された作業系の動力はミッションケース10に内装された図示されない株間変速装置で複数段にギヤ変速された後、機体後方に向けて取り出され、伸縮伝動軸12を介して苗植付け装置4に伝達されるようになっている。   An engine 8 is mounted on the front portion of the traveling machine body 3, and its output is transmitted to a main transmission 9 comprising a hydrostatic continuously variable transmission (HST) capable of switching between forward and backward travel, and the shift output is transmitted to the mission. It is input to the case 10 and is branched into a traveling system and a working system. The power of the traveling system is gear-shifted by a sub-transmission device (not shown) and then transmitted to the front wheels 1 equipped on the transmission case 10 and also to the rear wheels 2 equipped on the rear transmission case 11. ing. Further, the power of the branched work system is gear-shifted in a plurality of stages by an unillustrated inter-transmission device incorporated in the transmission case 10 and then taken out toward the rear of the machine body, and the seedling planting device via the telescopic transmission shaft 12 4 is transmitted.

図2、図3に示すように、前記苗植付け装置4は、6条分の苗を載置して左右方向に設定ストロークで往復移動される苗のせ台15、苗のせ台15の下端から1株分ずつ苗を切り出して圃場に植付けてゆく6組の回転式の植付け機構16、植付け箇所を整地する3個の整地フロート17、ミッションケース10から取り出された作業用動力が入力されるフィードケース18、横長角筒状の植付けフレーム19等を備えて構成されており、この植付けフレーム19の左右中間部位に前記フィードケース18が連結されるとともに、植付けフレーム19の中央および左右箇所に後向き片持ち状に連結した3つの植付けケース20の後部に前記植付け機構16が左右2組ずつ装備されている。   As shown in FIGS. 2 and 3, the seedling planting device 4 has six seedlings placed on it and is moved back and forth in the left and right directions by a set stroke, and the seedling planting device 4 is 1 from the lower end of the seedling platform 15. Six sets of rotary planting mechanisms 16 that cut out seedlings for planting and planting them in the field, three leveling floats 17 that level the planting location, and a feed case that receives work power taken from the mission case 10 18, a horizontally long rectangular tube-shaped planting frame 19 and the like. The feed case 18 is connected to the left and right intermediate portion of the planting frame 19, and the cantilever is rearward cantilevered at the center and the left and right of the planting frame 19. The two planting mechanisms 16 are provided at the rear of the three planting cases 20 connected in a shape.

図4に示すように、前記フィードケース18の左右からは、苗のせ台15を往復横送りするネジ軸21と、苗のせ台15に装備した苗送りベルト22を横送りストロークエンド到達ごとに送り作動させる苗送り軸23が突設されるとともに、植付け機構駆動用の出力軸24が装備され、この出力軸24と各植付けケース20の基部に備えられた入力軸25とが伝動軸26を介して同芯に連動連結され、さらに、各植付けケース20において、前記入力軸25とケース後部に貫通支承した植付け駆動軸27とがチェーン連動されている。また、入力軸25にはトルクリミッタ28が介在されて過大な負荷トルクの伝達が回避されるとともに、植付け駆動軸27には任意に入り切り操作可能な畦際クラッチ29が装備されて、6条の植付け機構16うちの一部を2条単位で休止して4条植えあるいは2条植えなどの少数条植えが行えるようになっている。   As shown in FIG. 4, from the left and right sides of the feed case 18, a screw shaft 21 that reciprocally feeds the seedling table 15 and a seedling feeding belt 22 provided on the seedling table 15 are fed every time the lateral feed stroke end is reached. A seedling feed shaft 23 to be operated is projected, and an output shaft 24 for driving a planting mechanism is provided. The output shaft 24 and an input shaft 25 provided at the base of each planting case 20 are connected via a transmission shaft 26. Further, in each planting case 20, the input shaft 25 and the planting drive shaft 27 penetrating and supporting the rear portion of the case are chain-linked. The input shaft 25 is provided with a torque limiter 28 to prevent transmission of an excessive load torque, and the planting drive shaft 27 is equipped with a saddle clutch 29 that can be operated arbitrarily. A part of the planting mechanism 16 is paused in increments of two, so that a small number of plants such as four plants or two plants can be planted.

前記施肥装置7は、運転座席14と苗植付け装置4との間において走行機体3に搭載されており、粉粒状の肥料を貯留する肥料ホッパー31、この肥料ホッパー31内の肥料を所定量ずつ繰り出す繰出し機構32、繰り出された肥料を供給ホース33を介して苗植付装置4の各整地フロート17に左右一対ずつ備えた作溝器34に風力搬送する電動ブロワ35、などを備えており、植付け苗の横側近傍において作溝器34で田面に形成した施肥溝に肥料を送込んで埋設してゆくよう構成されている。   The fertilizer application device 7 is mounted on the traveling machine 3 between the driver seat 14 and the seedling planting device 4, and a fertilizer hopper 31 for storing powdered fertilizer and a fertilizer in the fertilizer hopper 31 are fed out by a predetermined amount. A feeding mechanism 32, an electric blower 35 that wind-feeds the fed fertilizer through a supply hose 33 to a grooving device 34 provided in a pair of left and right on each leveling float 17 of the seedling planting device 4, etc. In the vicinity of the lateral side of the seedling, the fertilizer is sent and buried in a fertilizer groove formed on the surface of the rice field by the groover 34.

このように構成された苗植付け装置4には、前記整地フロート17の前方において植付け直前の田面を砕土および均平化する整地用回転体40が駆動回転可能に横架配備した整地装置を備えており、以下、この整地装置の構造について詳細に説明する。   The seedling planting device 4 configured in this manner includes a leveling device in which a leveling rotator 40 for crushing and leveling the field just before planting is disposed in front of the leveling float 17 so as to be driven and rotated. The structure of the leveling device will be described in detail below.

図4、図5に示すように、前記植付けフレーム19の一端には軸受けブラケット41が連結され、この軸受けブラケット41に貫通支架された整地用駆動軸42と外側の植付けケース20における入力軸25とが同芯に突き合せ連結されるとともに、整地用駆動軸42の外方突出部には伝動ケース43が駆動軸軸芯pを中心にして上下揺動可能に装着されている。また、植付けフレーム19の他端にもブラケット44が連結され、このブラケット44に前記駆動軸軸芯pを中心にして上下揺動可能な支持アーム45が装着されている。そして、これら伝動ケース43と支持アーム45との遊端部間に亘って支架した回転支軸46を介して前記整地用回転体40が装着されている。   As shown in FIGS. 4 and 5, a bearing bracket 41 is connected to one end of the planting frame 19, a leveling drive shaft 42 penetrating and supported by the bearing bracket 41, and an input shaft 25 in the outer planting case 20. And a transmission case 43 is mounted on the outward projecting portion of the leveling drive shaft 42 so as to swing up and down about the drive shaft axis p. A bracket 44 is also connected to the other end of the planting frame 19, and a support arm 45 that can swing up and down around the drive shaft axis p is attached to the bracket 44. The leveling rotator 40 is mounted via a rotation support shaft 46 supported between the free end portions of the transmission case 43 and the support arm 45.

前記回転支軸46は、伝動ケース43および支持アーム45の先端部に貫通支承された短い端部回転支軸46a,46bと、左右の端部回転支軸46a,46bの間に同芯に嵌合連結される長い角筒からなる中央回転支軸46cとで構成されている。   The rotation support shaft 46 is concentrically fitted between the short end rotation support shafts 46a and 46b that are penetrated and supported at the distal ends of the transmission case 43 and the support arm 45, and the left and right end rotation support shafts 46a and 46b. It is comprised with the center rotation spindle 46c which consists of a long square tube connected together.

そして、整地用駆動軸42に備えられた駆動スプロケット48と回転支軸46aに備えられた従動スプロケット49とに亘ってチェーン50が巻回張設されて、植付け機構駆動動力の一部で回転支軸46が所定方向(ダウンカット方向)に回転駆動されるように構成されている。また、整地用駆動軸42と駆動スプロケット48との間にはトルクリミッタ51が、また、回転支軸46と従動スプロケット49との間には回転支軸46の先行回転を許容する一方向クラッチ52が介在されており、整地用回転体40の駆動系に過大な負荷が作用するのをトルクリミッタ51によって防止するとともに、苗植付け装置4の駆動が停止されている状態で整地用回転体40が接地駆動されて遊転回動することが一方向クラッチ52によって許容されるようになっている。   A chain 50 is wound and stretched between a drive sprocket 48 provided on the leveling drive shaft 42 and a driven sprocket 49 provided on the rotation support shaft 46a. The shaft 46 is configured to be rotationally driven in a predetermined direction (down cut direction). A torque limiter 51 is provided between the leveling drive shaft 42 and the drive sprocket 48, and a one-way clutch 52 that allows the rotation support shaft 46 to advance between the rotation support shaft 46 and the driven sprocket 49. And the torque limiter 51 prevents an excessive load from acting on the drive system of the leveling rotator 40, and the leveling rotator 40 can be operated while the drive of the seedling planting device 4 is stopped. The one-way clutch 52 is allowed to rotate freely while being grounded.

整地用回転体40は、軸芯方向小幅に形成した複数の単位回転体55を回転軸芯方向に並列して所定の整地幅に構成されている。図6に示すように、単位回転体55は、樹脂成形によって外周複数箇所の整地作用部55aと回転支軸46に外嵌する四角形の中心孔56を有するボス部55bとをホイール部55cで一体化して形成されたものであり、一種類の樹脂成形素材を利用しボス部55bの長さの異なる二種類の単位回転体55(L),55(S)が構成されている。すなわち、樹脂成形素材は、図5に示すように、中間部に配置されるボス部55bの長い仕様の単位回転体55(L)と、ボス部55bの一端部を欠除することでボス部55bの短い仕様の単位回転体55(S)とで構成されている。   The leveling rotary body 40 is configured to have a predetermined leveling width by arranging a plurality of unit rotary bodies 55 formed in a small width in the axial direction in parallel in the rotational axis direction. As shown in FIG. 6, the unit rotating body 55 has a wheel portion 55 c integrally formed with a plurality of leveling action portions 55 a on the outer periphery and a boss portion 55 b having a square center hole 56 that fits around the rotation support shaft 46 by resin molding. Two types of unit rotating bodies 55 (L) and 55 (S) having different lengths of the boss portions 55b are formed using one type of resin molding material. That is, as shown in FIG. 5, the resin molding material is formed by removing the unit rotating body 55 (L) having a long specification of the boss portion 55 b arranged at the intermediate portion and one end portion of the boss portion 55 b. The unit rotating body 55 (S) having a short specification 55b is used.

各単位回転体55は、回転支軸46に複数装着して整地用回転体を構成する整地用ロータであって、単位回転体55の回転軸芯方向におけるボス部55bの長さを回転軸芯方向における整地作用部55aの長さよりも長くしてある。これにより、単位回転体55を、ボス部55bどうしが接当させて回転支軸46に装着すると、隣接する整地作用部55a,55a間に隙間sが形成される。整地作用部55aの左右幅は回転方向上手側から下手側に亘って同幅で、隙間sは平行である。この隙間sを形成したことにより、泥水の後方への流れが改善されるとともに、隣接する整地作用部間に夾雑物が詰まるという不都合も軽減ないし解消され、作業後の手入れも楽に行えるようになった。   Each unit rotating body 55 is a leveling rotor that is mounted on the rotation support shaft 46 to constitute a leveling rotating body, and the length of the boss portion 55b in the rotation axis direction of the unit rotating body 55 is set to the rotation axis. It is longer than the length of the leveling action part 55a in the direction. Accordingly, when the unit rotating body 55 is attached to the rotation support shaft 46 with the boss portions 55b coming into contact with each other, a gap s is formed between the adjacent leveling action portions 55a and 55a. The horizontal width of the leveling action portion 55a is the same from the upper side to the lower side in the rotational direction, and the gap s is parallel. By forming this gap s, the rearward flow of muddy water is improved, and the inconvenience of clogging with foreign substances between adjacent leveling sections is reduced or eliminated, and maintenance after work can be performed easily. It was.

伝動ケース43に貫通支持された端部回転支軸46aの左右には短ボス仕様の単位回転体55(S)が外嵌装着されて頭付きピン57で連結固定され、伝動ケース43における軸受けボス部の左右両端が左右の単位回転体55(S)のボス部55bで挟まれることで、回転支軸46全体の軸芯方向での位置決めがなされている。   Unit rotating bodies 55 (S) with short boss specifications are fitted on the left and right sides of the end rotation support shaft 46 a that is penetrated and supported by the transmission case 43, and are connected and fixed by a headed pin 57. By positioning the left and right ends of the portion between the boss portions 55b of the left and right unit rotating bodies 55 (S), the entire rotation support shaft 46 is positioned in the axial direction.

このように位置決めされた回転支軸46に長ボス仕様の単位回転体55(L)とカラー58を順次外嵌装着するとともに、支持アーム45の外側に突出した端部回転支軸46bに短ボス仕様の単位回転体55(S)を外嵌装着し、所定の単位回転体55を頭付きピン59で回転支軸46に連結することで所定の作用幅を有する整地用回転体40が構成されている。   A unit rotating body 55 (L) and a collar 58 having a long boss specification are sequentially fitted on the rotating support shaft 46 positioned in this manner, and a short boss is mounted on the end rotating support shaft 46 b protruding outside the support arm 45. The specified unit rotating body 55 (S) is externally fitted and connected, and the predetermined unit rotating body 55 is connected to the rotation support shaft 46 by a headed pin 59, whereby the leveling rotating body 40 having a predetermined working width is configured. ing.

ここで、図3に示すように、整地用回転体40の左右中央付近においては、中央の長いカラー58とその左右の短いカラー58が介在されることで、後輪2の後方に対応して広目の隙間を設けて泥流れ通路を形成してある。   Here, as shown in FIG. 3, in the vicinity of the left and right center of the leveling rotator 40, the center long collar 58 and the left and right short collars 58 are interposed so as to correspond to the rear of the rear wheel 2. A wide gap is provided to form a mud flow passage.

図3,7に示すように、前記伝動ケース43および支持アーム45から上方に突設されたブラケット61,61aに亘って左右に長いステー62が架設されるとともに、植付けフレーム19から立設した左右の苗のせ台支持フレーム63に、ベルクランク64が前後向き支点a周りに揺動可能にブラケット65を介して枢着され、各ベルクランク64と前記ステー62の左右箇所とが吊り下げロッド66で連結されている。また、左右のベルクランク64が連係ロッドで67連動連結されるとともに、一方のベルクランク64から上方に向けて操作レバー68が延出されており、この操作レバー68を左右に操作することで左右のベルクランク64を同方向に揺動し、伝動ケース43および支持アーム45を軸芯p周りに上下に揺動移動させて、整地用回転体40の高さを調節することができるようになっている。また、前記操作レバー68は、ブラケット65に連設したレバーガイド69に複数操作位置で係止固定することで整地用回転体40を所望の作用高さ位置に調節して固定することができるとともに、不要時には田面から浮上する非作業高さに退避させておくことができるようになっている。なお、前記ステー62の左右箇所と左右のブラケット65に亘って左右一対の引上げバネ71が張設されて、操作レバー68による持上げ操作荷重が軽減されるようになっている。   As shown in FIGS. 3 and 7, long stays 62 are erected on the left and right over brackets 61, 61 a projecting upward from the transmission case 43 and the support arm 45, and left and right erected from the planting frame 19. A bell crank 64 is pivotally attached to the seedling support base frame 63 via a bracket 65 so as to be swingable around a fulcrum a in the front-rear direction, and a hanging rod 66 connects each bell crank 64 and the left and right portions of the stay 62. It is connected. In addition, the left and right bell cranks 64 are linked to each other by 67 linkage rods, and an operating lever 68 extends upward from one bell crank 64. By operating the operating lever 68 left and right, the left and right The height of the leveling rotator 40 can be adjusted by swinging the bell crank 64 in the same direction and swinging the transmission case 43 and the support arm 45 up and down around the axis p. ing. Further, the operating lever 68 can be fixed by adjusting the rotary body for leveling 40 to a desired working height position by being locked and fixed to a lever guide 69 provided continuously to the bracket 65 at a plurality of operating positions. When not needed, it can be evacuated to a non-working height that rises from the surface. A pair of left and right pulling springs 71 are stretched across the left and right portions of the stay 62 and the left and right brackets 65 so that the lifting operation load by the operation lever 68 is reduced.

また、図7に示すように、前記ステー62には伝動ケース43と支持アーム45の間の整地作用部に左右に長い泥跳ね防止カバー72が当て板73を介して取り付けられて、整地用回転体40の後方に垂れ下がり配置されている。この泥跳ね防止カバー72は弾性変形可能な樹脂製のシート材で構成されており、その基部付近が伝動ケース43と支持アーム45の側面に突設したピン状のガイド部材74に係止されて、泥跳ね防止カバー72が整地用回転体40に接触して巻き込まれることが防止されるようになっている。   Further, as shown in FIG. 7, a long mud splash prevention cover 72 is attached to the stay 62 between the transmission case 43 and the support arm 45 via a contact plate 73 on the leveling action portion between the transmission case 43 and the support arm 45, and the leveling rotation is performed. It hangs behind the body 40 and is arranged. The mud splash prevention cover 72 is made of an elastically deformable resin sheet material, and the vicinity of the base is locked by a pin-shaped guide member 74 protruding from the side surface of the transmission case 43 and the support arm 45. The mud splash prevention cover 72 is prevented from coming into contact with the leveling rotator 40 and being caught.

前記泥跳ね防止カバー72は、自由状態において整地用回転体40の下端付近まで垂れ下がる長さに設定されている。実際の植付け作業状態では、整地用回転体40を田面に適当量沈み込ませるので、泥跳ね防止カバー72は少しめくれ上げられて田面に追従接触し、整地用回転体40による砕土跡を適度の押圧力で押え込んでその表面を均平化することになる。   The mud splash prevention cover 72 is set to a length that hangs down to the vicinity of the lower end of the leveling rotator 40 in a free state. In an actual planting operation state, an appropriate amount of the leveling rotator 40 is submerged in the paddy field, so that the mud splash prevention cover 72 is turned up a little to follow the paddy field, and the crushed soil by the leveling rotator 40 is moderate. The surface is leveled by pressing with the pressing force.

伝動ケース43と支持アーム45の外側には、図1〜3及び図8に示すように、最外側の整地用単位回転体(整地用ロータ)55の横外側に近接して整地用回転体55の前方横外方への泥流れを抑制する泥流れ抑制部材75を配設してある。この泥流れ抑制部材75は、伝動ケース43および支持アーム45から上方に突設させてステー62の端部に取付けたブラケット61,61aに取り付けてある。泥流れ抑制部材75の本体75aに対して前側の付設する金具75bと後側に付設する泥押さえ金具75cとをボルトナット75dで着脱自在に取り付けられるように構成してある。これらの金具75b,75cは泥土水の多いときに有効であり、後方の泥押さえ金具75cを外したときは、横外方への泥押しをし難くするとともに後方へ泥を良好に逃がすことができる。又、本体75aに泥押さえ金具75cをボルトナット75dで固定すると後方への泥の逃がしに抵抗を与えるので整地性がよくなる。符号76は、ボルトを挿通するための孔である。このボルト孔76を前後に増設すれば、延長金具75bや泥押さえ金具75cの長さ調節をすることができる。   As shown in FIGS. 1 to 3 and 8, on the outer side of the transmission case 43 and the support arm 45, the leveling rotator 55 is adjacent to the lateral outer side of the outermost leveling unit rotator 55 (leveling rotor). A mud flow restraining member 75 that restrains the mud flow toward the front side and the outside is disposed. The mud flow restraining member 75 is attached to brackets 61 and 61 a that project upward from the transmission case 43 and the support arm 45 and are attached to the end of the stay 62. A metal fitting 75b attached on the front side and a mud pressure fitting 75c attached on the rear side with respect to the main body 75a of the mud flow suppressing member 75 are configured to be detachably attached by bolts and nuts 75d. These metal fittings 75b and 75c are effective when there is a lot of mud water, and when the rear mud retainer metal fitting 75c is removed, it is difficult to push mud laterally outward, and mud can escape well to the rear. it can. Further, when the mud retainer 75c is fixed to the main body 75a with a bolt nut 75d, resistance to mud escape to the rear is given, so that the leveling is improved. Reference numeral 76 denotes a hole for inserting a bolt. If this bolt hole 76 is added back and forth, the lengths of the extension fitting 75b and the mud holding fitting 75c can be adjusted.

〔別実施の態様〕
上記実施の態様では、整地作用部55aの左右端面を平行に形成したが、図9に示すように、一つの整地用ロータ(単位回転体)55の整地作用部55aの左右端面間の幅を整地用回転体40の回転方向下手側ほど狭くして、単位回転体55どうしの隣接する整地作用部55a,55a間の隙間sの幅が回転方向下手側ほど広くなるように構成しもよい。
このようにすると、隙間sに入った夾雑物が抵抗なく通り抜けることができ、詰まりを生じさせることを極力回避できる。
[Another embodiment]
In the above embodiment, the left and right end faces of the leveling action portion 55a are formed in parallel, but as shown in FIG. 9, the width between the left and right end faces of the leveling action portion 55a of one leveling rotor (unit rotating body) 55 is set. The width of the gap s between the leveling action portions 55a, 55a adjacent to each other of the unit rotary bodies 55 may be narrower toward the lower side in the rotational direction.
If it does in this way, the foreign substance which entered the clearance gap s can pass through without resistance, and it can avoid creating a clogging as much as possible.

又、上記隙間sを形成するに当たって、一つの整地用ロータ(単位回転体)55の整地作用部55aの左右端面間の幅を整地用回転体40の回転方向下手側ほど、且つ整地用回転体40の半径方向外方側ほど狭くなるように形成して、単位回転体55どうしの隣接する整地作用部55a,55a間の隙間sの幅が回転方向下手側ほど、且つ整地用回転体40の半径方向外方側ほど広くなるように構成しもよい。   Further, in forming the gap s, the width between the left and right end surfaces of the leveling action portion 55a of one leveling rotor (unit rotating body) 55 is set closer to the lower side in the rotational direction of the leveling rotating body 40, and the leveling rotating body. 40, the width of the gap s between adjacent leveling action portions 55a, 55a between the unit rotating bodies 55 is closer to the lower side in the rotation direction, and the leveling rotating body 40 You may comprise so that it may become wide toward the radial direction outer side.

上記実施の態様では、整地用回転体40による後方への泥跳ねを泥跳ね防止カバー72で防止するようにしたものであるが、泥跳ね防止カバー72を省略して、整地フロート17を、図10、図11に示すように、整地用回転体40の上方に覆い被さるような構造にしてもよい。このように構成すれば、整地フロート77の前部が泥跳ね防止カバーを兼ね、フロートの本体部77aとカバー部77bとが同一の動きをするので、フロート上面への泥の乗り上げが少なくなる。   In the above embodiment, the mud splash preventing cover 72 prevents the mud splashing backward by the leveling rotary body 40, but the mud splash preventing cover 72 is omitted, and the leveling float 17 is shown in FIG. As shown in FIG. 10 and FIG. 11, the structure may be configured so as to cover the rotary body for leveling 40. If comprised in this way, since the front part of the leveling float 77 will also serve as a mud splash prevention cover and the float main body part 77a and the cover part 77b will move the same, the riding of mud on the float upper surface will decrease.

田植機の全体側面図Whole side view of rice transplanter 苗植付け装置の側面図Side view of seedling planting device 苗植付け装置の背面図Rear view of seedling planting device 苗植付け装置の伝動構造を示す平面図Plan view showing the transmission structure of the seedling planting device 整地用回転体の詳細を示す横断平面図Cross-sectional plan view showing details of rotating body for leveling 整地用回転体の外観斜視図Appearance perspective view of rotating body for leveling 整地用回転体の縦断側面図Vertical side view of rotating body for leveling 泥流れ抑制部材の分解斜視図Exploded perspective view of mud flow control member 整地用回転体の隣接関係を示す斜視図The perspective view which shows the adjacent relationship of the rotary body for leveling 整地フロートの別実施の態様を示す側面図Side view showing another embodiment of leveling float 整地フロートの別実施の態様を示す平面図Plan view showing another embodiment of leveling float

符号の説明Explanation of symbols

40 整地用回転体
46 回転支軸
55 単位回転体
55a 整地作用部
55b ボス部
s 隙間
40 Rotating body for leveling 46 Rotating spindle 55 Unit rotating body 55a Leveling action part 55b Boss part s Gap

Claims (5)

回転支軸に複数の単位回転体を装着して整地用回転体を構成するための整地用ロータであって、前記単位回転体には前記回転支軸に嵌合するボス部とこのボス部に連設して径方向外方に位置する整地作用部とを備え、前記単位回転体の回転軸芯方向における前記ボス部の長さを回転軸芯方向における前記整地作用部の長さよりも長くしてある整地用ロータ。   A leveling rotor for mounting a plurality of unit rotating bodies on a rotating support shaft to form a leveling rotating body, wherein the unit rotating body includes a boss portion fitted to the rotating support shaft and a boss portion A leveling action portion that is continuously provided and located radially outward, and the length of the boss portion in the rotation axis direction of the unit rotating body is longer than the length of the leveling action portion in the rotation axis direction. A leveling rotor. 回転支軸に複数の単位回転体を装着してなる整地用回転体を装備した整地装置において、
前記単位回転体には前記回転支軸に嵌合したボス部とこのボス部に連設して径方向外方に位置する整地作用部とを備え、前記回転支軸に隣接する単位回転体をこれのボス部どうしを接当させた状態で装着するとともに、前記ボス部どうしを接当させた装着状態で隣接する整地作用部間に隙間を形成してあることを特徴とする整地装置。
In a leveling device equipped with a leveling rotator comprising a plurality of unit rotators mounted on a rotating spindle,
The unit rotating body includes a boss portion fitted to the rotating support shaft and a leveling action portion that is connected to the boss portion and is positioned radially outward. The unit rotating body is adjacent to the rotating support shaft. The leveling device is mounted in a state where the boss portions are in contact with each other, and a gap is formed between adjacent leveling action portions in the mounted state in which the boss portions are in contact with each other.
前記単位回転体が請求項1記載の整地用ロータからなる請求項2記載の整地装置。   The leveling device according to claim 2, wherein the unit rotating body includes the leveling rotor according to claim 1. 前記整地用回転体の回転方向下手側ほど前記単位回転体どうしの隣接する前記整地作用部間の隙間の幅が広くなるように構成してある請求項2または3記載の整地装置。   4. The leveling device according to claim 2, wherein a width of a gap between the leveling action portions adjacent to each other of the unit rotating bodies is increased toward a lower side in a rotation direction of the leveling rotating body. 前記整地用回転体の横外側に近接して前記整地用回転体の前方横外方への泥流れを抑制する泥流れ抑制部材を配設してある請求項2〜4のいずれか一項に記載の整地装置。   The mud flow suppression member which suppresses the mud flow to the front side outward of the said leveling rotary body in the vicinity of the lateral outer side of the said leveling rotary body is arrange | positioned. The leveling device described.
JP2008164524A 2008-06-24 2008-06-24 Land-leveling rotor and land-leveling apparatus equipped with land-leveling rotor Pending JP2010004749A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018191616A (en) * 2017-05-20 2018-12-06 みのる産業株式会社 Sludge guide plate in work machine for paddy field

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018191616A (en) * 2017-05-20 2018-12-06 みのる産業株式会社 Sludge guide plate in work machine for paddy field

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