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JP2009118830A - Ambulatory seedling transplanter - Google Patents

Ambulatory seedling transplanter Download PDF

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Publication number
JP2009118830A
JP2009118830A JP2007299495A JP2007299495A JP2009118830A JP 2009118830 A JP2009118830 A JP 2009118830A JP 2007299495 A JP2007299495 A JP 2007299495A JP 2007299495 A JP2007299495 A JP 2007299495A JP 2009118830 A JP2009118830 A JP 2009118830A
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Japan
Prior art keywords
planting
seedling
transmission case
shaft
case
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JP2007299495A
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Japanese (ja)
Inventor
Isao Ishida
石田  伊佐男
Masakatsu Araki
正勝 荒木
Toshio Tamai
玉井  利男
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Iseki and Co Ltd
Iseki Agricultural Machinery Mfg Co Ltd
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Application filed by Iseki and Co Ltd, Iseki Agricultural Machinery Mfg Co Ltd filed Critical Iseki and Co Ltd
Priority to JP2007299495A priority Critical patent/JP2009118830A/en
Priority to CN2008101777534A priority patent/CN101438649B/en
Priority to KR1020080115074A priority patent/KR101028518B1/en
Publication of JP2009118830A publication Critical patent/JP2009118830A/en
Pending legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C11/00Transplanting machines
    • A01C11/02Transplanting machines for seedlings
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01CPLANTING; SOWING; FERTILISING
    • A01C11/00Transplanting machines
    • A01C11/006Other parts or details or planting machines
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries

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  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Environmental Sciences (AREA)
  • Transplanting Machines (AREA)

Abstract

【課題】ギヤ変速装置の変速クラッチを使わずにコストアップにならない簡単な構成で苗植付間隔を変更出来るようにすることが本発明の課題である。
【解決手段】機体の前部に配置した主伝動ケース3から前後方向の縦植付伝動軸15を介して動力が伝達される植付伝動ケース内で一対のベベルギヤを介して左右方向の横植付伝動軸に伝動され、該横植付伝動軸からの動力で駆動し苗取口上の苗を取って圃場に植え付ける苗植付装置と、前記苗取口に一株分ずつ苗を供給する苗載台とを設け、前記主伝動ケース3内の植付駆動軸98端部に延長植付駆動軸99を着脱可能に取り付け、この延長植付駆動軸99から前記縦植付伝動軸15へ伝動する一対のベベルギヤ100,101を設け、延長植付駆動軸99とベベルギヤ100,101を取出し可能な開口部102を主伝動ケース3に形成した歩行型の苗移植機とした。
【選択図】図12
It is an object of the present invention to make it possible to change a seedling planting interval with a simple configuration that does not increase the cost without using a transmission clutch of a gear transmission.
Horizontal planting in the left-right direction via a pair of bevel gears in a planting transmission case in which power is transmitted from a main transmission case 3 arranged at the front of the machine body through a longitudinal planting transmission shaft 15 in the front-rear direction. A seedling planting device that is driven by a power transmission shaft and is driven by power from the horizontal planting transmission shaft to take seedlings on a seedling inlet and plant them in a field, and a seedling that supplies seedlings to the seedling outlet one by one A stand is provided, and an extended planting drive shaft 99 is detachably attached to an end of the planting drive shaft 98 in the main transmission case 3, and is transmitted from the extended planting drive shaft 99 to the vertical planting transmission shaft 15. A walking type seedling transplanting machine in which a pair of bevel gears 100 and 101 are provided and an opening 102 through which the extended planting drive shaft 99 and the bevel gears 100 and 101 can be taken out is formed in the main transmission case 3 is used.
[Selection] Figure 12

Description

本発明は、歩行型の苗移植機でエンジンの動力を苗植付装置に伝動する植付伝動ケースの動力伝動構成に関する。   The present invention relates to a power transmission configuration of a planting transmission case that transmits engine power to a seedling planting device using a walking seedling transplanter.

歩行型の苗移植機は、例えば、特開2001−258311号公報に記載されている。この歩行型苗移植機では、機体の前部に配置するエンジンの動力がミッションケースと前後方向に設ける伝動軸で機体後部のギヤボックスに伝動されて、機体の後部に設ける苗載台上の苗を一株分づつ取出して圃場へ植え付ける苗植付装置の駆動が行われている。   An ambulatory seedling transplanter is described in, for example, Japanese Patent Application Laid-Open No. 2001-258311. In this walking-type seedling transplanter, the power of the engine placed at the front of the aircraft is transmitted to the gear box at the rear of the aircraft by the transmission case and the transmission shaft provided in the front-rear direction, so that the seedlings on the seedling stand provided at the rear of the aircraft The seedling planting device for taking out the plants one by one and planting them on the field is being driven.

また、機体上にオペレ−タが搭乗する座席を設けた乗用型苗移植機は、例えば、特開2003−320954号公報に記載されているように、苗植付装置の動力伝動部に変速クラッチを内蔵する植付クラッチケースを設けて、苗植付装置の駆動速度を変えることで植付株の間隔を変更出来るようにしている。
特開2001−258311号公報 特開2003−320954号公報
A riding seedling transplanter provided with a seat on which an operator can ride is mounted on a power transmission part of a seedling planting device, for example, as described in Japanese Patent Application Laid-Open No. 2003-320954. A planting clutch case containing a plant is provided, and the interval between planted stocks can be changed by changing the driving speed of the seedling planting device.
JP 2001-258311 A JP 2003-320954 A

従来の歩行型苗移植機では苗植付間隔の変更を苗植付装置への伝動部に設けるギヤ変速装置の変速クラッチを使って行うようにしていたが、これをギヤ変速装置の変速クラッチを使わずにコストアップにならない簡単な構成で苗植付間隔を変更出来るようにすることが本発明の課題である。   In the conventional walking type seedling transplanter, the seedling planting interval is changed by using the gear shifting clutch of the gear transmission provided in the transmission part to the seedling planting device. It is an object of the present invention to make it possible to change the seedling planting interval with a simple configuration that does not increase costs without being used.

この発明は、上記課題を解決するべく次のような技術的手段を講じた。
すなわち、請求項1に係る発明は、機体の前部に配置した主伝動ケース3と、該主伝動ケース3の左右に配置した走行伝動ケース4と、該走行伝動ケース4からの動力で駆動する左右各々の車輪5と、主伝動ケース3から前後方向の縦植付伝動軸15を介して動力が伝達される植付伝動ケース7内で一対のベベルギヤ95,96を介して左右方向の横植付伝動軸97に伝動され、該横植付伝動軸97からの動力で駆動し苗取口28上の苗を取って圃場に植え付ける苗植付装置10と、前記苗取口28に一株分ずつ苗を供給する苗載台11とを設け、前記主伝動ケース3内の植付駆動軸98端部に延長植付駆動軸99を着脱可能に取り付け、この延長植付駆動軸99から前記縦植付伝動軸15へ伝動する一対のベベルギヤ100,101を設け、延長植付駆動軸99とベベルギヤ100,101を取出し可能な開口部102を主伝動ケース3に形成した歩行型の苗移植機とした。
In order to solve the above problems, the present invention has taken the following technical means.
That is, the invention according to claim 1 is driven by the main transmission case 3 disposed at the front of the airframe, the traveling transmission case 4 disposed on the left and right of the main transmission case 3, and the power from the traveling transmission case 4. Horizontal planting in the left-right direction via a pair of bevel gears 95 and 96 in each of the left and right wheels 5 and a planting transmission case 7 in which power is transmitted from the main transmission case 3 through the longitudinal planting transmission shaft 15 in the front-rear direction. A seedling planting device 10 that is driven by the power transmission shaft 97 and is driven by the power from the horizontal planting transmission shaft 97 to take seedlings on the seedling inlet 28 and plant them in the field. A seedling mount 11 for supplying seedlings is provided, and an extended planting drive shaft 99 is detachably attached to an end of the planting drive shaft 98 in the main transmission case 3. A pair of bevel gears 100 and 101 that transmit to the planting transmission shaft 15 are provided. It was extended planting drive shaft 99 and the bevel gear 100, 101 a removable opening 102 of the main transmission case 3 to form gait type seedlings transplanter.

この構成で、エンジンの動力が主伝動ケース3の植付駆動軸98から延長植付駆動軸99とベベルギヤ100,101で縦植付伝動軸15に伝動され、さらに縦植付伝動軸15の回転が植付伝動ケース7内でベベルギヤ95,96から横植付伝動軸97に伝動され、横植付伝動軸97で苗植付装置10が駆動される。   With this configuration, the engine power is transmitted from the planting drive shaft 98 of the main transmission case 3 to the vertical planting transmission shaft 15 by the extended planting drive shaft 99 and the bevel gears 100 and 101, and further the rotation of the vertical planting transmission shaft 15. Is transmitted from the bevel gears 95 and 96 to the horizontal planting transmission shaft 97 in the planting transmission case 7, and the seedling planting device 10 is driven by the horizontal planting transmission shaft 97.

また、請求項2に係る発明は、請求項1の構成で、延長植付駆動軸99から前記縦植付伝動軸15へ伝動する一対のベベルギヤ100,101の歯数を異ならせると共に該ベベルギヤ100,101を交互に交換して取り付け可能にした。   According to a second aspect of the present invention, in the configuration of the first aspect, the number of teeth of the pair of bevel gears 100 and 101 that are transmitted from the extended planting drive shaft 99 to the vertical planting transmission shaft 15 is made different. , 101 are alternately replaced to enable attachment.

この構成で、一対のベベルギヤ100,101を交互に入れ換えれば、植付駆動軸98の回転変速比を変更して縦植付伝動軸15に伝動して植付株間を変更出来る。   With this configuration, if the pair of bevel gears 100 and 101 are alternately replaced, the rotational speed ratio of the planting drive shaft 98 can be changed and transmitted to the vertical planting transmission shaft 15 to change the planting stock.

請求項1に記載の発明によると、株の植付間隔を変更するには、苗載台11から苗を掻き取る苗植付装置10を駆動する横植付伝動軸97の回転速度を変更するのであるが、植付駆動軸98から縦植付伝動軸15へ伝動する延長植付駆動軸99とベベルギヤ100,101を主伝動ケース3から取出してギヤ比の異なるベベルギアと交換すれば良く、主伝動ケース3内でギヤを組み合わせた変速装置を構成するよりもコストダウンで製造できる。   According to invention of Claim 1, in order to change the planting space | interval of a strain | stump | stock, the rotational speed of the horizontal planting transmission shaft 97 which drives the seedling planting apparatus 10 which scrapes off a seedling from the seedling mounting stand 11 is changed. However, the extension planting drive shaft 99 and the bevel gears 100 and 101 that are transmitted from the planting drive shaft 98 to the vertical planting transmission shaft 15 may be removed from the main transmission case 3 and replaced with bevel gears having different gear ratios. The transmission case 3 can be manufactured at a lower cost than the configuration of a transmission that combines gears.

また、請求項2に記載の発明によると、変速比変更用の別のベベルギヤを用意しなくても、一対のベベルギヤ100,101を交互に入れ換えて組み付ければ横植付伝動軸97の回転速度を変更出来て株の植付間隔を変更できる。   According to the second aspect of the present invention, the rotational speed of the horizontal planting transmission shaft 97 can be obtained by alternately exchanging the pair of bevel gears 100 and 101 without preparing another bevel gear for changing the gear ratio. The planting interval of the stock can be changed.

この発明の実施の一形態を、以下に説明する。
図1及び図2は、歩行型田植機1の全体側面図及び平面図である。この歩行型田植機1は、機体の前端部に設けたエンジン2と、該エンジン2の後側に設けた主伝動ケース3と、該主伝動ケース3の左右に各々設けた走行支持部材となる走行伝動ケース4と、該走行伝動ケース4からの動力で駆動する左右の車輪5と、主伝動ケース3の後側面から後方に延びる前部フレ−ム6と、前部フレ−ム6の後端に固着され湾曲して斜め後上方に延びる後部フレ−ム8と、後部フレ−ム8の前端部の上面に載置される植付伝動ケース7と、前記後部フレ−ム8の後端に取り付けた操縦ハンドル9とを備えている。前記植付伝動ケース7の下部には4個の苗植付装置10を取り付け、後部フレ−ム8の前側には該フレ−ム8に左右移動可能に支持される苗載台11を設けている。
One embodiment of the present invention will be described below.
FIG.1 and FIG.2 is the whole side view and top view of walking type rice transplanter 1. FIG. This walking type rice transplanter 1 becomes an engine 2 provided at the front end of the machine body, a main transmission case 3 provided on the rear side of the engine 2, and traveling support members provided on the left and right sides of the main transmission case 3. A traveling transmission case 4, left and right wheels 5 driven by power from the traveling transmission case 4, a front frame 6 extending rearward from the rear side surface of the main transmission case 3, and a rear frame 6 A rear frame 8 which is fixed to the end and is curved and extends obliquely rearward and upward; a planting transmission case 7 placed on the upper surface of the front end of the rear frame 8; and a rear end of the rear frame 8 And a steering handle 9 attached thereto. Four seedling planting devices 10 are attached to the lower part of the planting transmission case 7, and a seedling mounting table 11 is provided on the front side of the rear frame 8 and supported by the frame 8 so as to be movable left and right. Yes.

従って、前記エンジン2、主伝動ケース3、前部フレ−ム6と後部フレーム8、走行伝動ケース4及び車輪5等により走行車体部が構成され、植付伝動ケース7、苗植付装置10及び苗載台11等により植付部が構成されている。   Accordingly, a traveling vehicle body is constituted by the engine 2, the main transmission case 3, the front frame 6 and the rear frame 8, the traveling transmission case 4, the wheels 5, etc., and the planting transmission case 7, the seedling planting device 10 and The planting part is comprised by the seedling stand 11 grade | etc.,.

前記4個の苗植付装置10が苗載台11から苗取口28へ供給される苗をそれぞれ一株分づつ掻き取って、走行しながら圃場に同時に4条分の苗を植え付ける4条植えの構成となっている。   The four seedling planting devices 10 scrape seeds supplied from the seedling platform 11 to the seedling outlet 28 one by one and plant four seedlings simultaneously on the field while running. It becomes the composition of.

図3は、前部フレ−ム6と後部フレ−ム8の連結部を示す拡大側面図で、前部フレ−ム6の後端に設けた前部フレ−ム側フランジ60と後部フレ−ム8の前端に設けた後部フレ−ム側フランジ61とが接触し、両フランジ60,61が固定用のボルト62及びナット63で互いに固着されて前部フレ−ム6と後部フレ−ム8とが結合して固定された構成となっている。   FIG. 3 is an enlarged side view showing a connecting portion between the front frame 6 and the rear frame 8, and the front frame side flange 60 and the rear frame provided at the rear end of the front frame 6. The rear frame side flange 61 provided at the front end of the frame 8 comes into contact, and both the flanges 60 and 61 are fixed to each other by a fixing bolt 62 and a nut 63 so that the front frame 6 and the rear frame 8 are fixed. Are combined and fixed.

前部フレ−ム側フランジ60と前部フレ−ム6の基部との間には左右2箇所に前部フレ−ム側リブ64が固着されており、前部フレ−ム側フランジ60の強度向上を図っている。また、後部フレ−ム側フランジ61と後部フレ−ム8の基部の上面との間には左右2箇所に後部フレ−ム側の第一のリブ65が固着されており、後部フレ−ム側フランジ61の強度向上を図っている。また、後部フレ−ム8上には、前記第一のリブ65より後側に位置する第二のリブ66を左右2箇所に設けている。   Between the front frame side flange 60 and the base portion of the front frame 6, front frame side ribs 64 are fixed in two places on the left and right sides, and the strength of the front frame side flange 60 is determined. We are trying to improve. In addition, first ribs 65 on the rear frame side are fixed to the left and right two locations between the rear frame side flange 61 and the upper surface of the base of the rear frame 8, and the rear frame side The strength of the flange 61 is improved. On the rear frame 8, second ribs 66 located on the rear side of the first ribs 65 are provided at two positions on the left and right.

尚、前部フレ−ム側フランジ60の上端より後部フレ−ム側フランジ61の上端が上側に突出しており、この突出した部分と植付伝動ケース7の後述する中央ケース部7aの前面との間に固定ボルト67を左右に2本設け、植付伝動ケース7が移動しないように固定された構成となっている。   Note that the upper end of the rear frame side flange 61 protrudes upward from the upper end of the front frame side flange 60, and this protruding portion and the front surface of the center case portion 7a of the planting transmission case 7 to be described later. Two fixing bolts 67 are provided on the left and right sides, and the planting transmission case 7 is fixed so as not to move.

前記植付伝動ケース7は、左右中央に位置する中央ケース部7aと、左右両側に位置する外側ケース部7bとを備えている。中央ケース部7aには後述する左右移動軸29や中央2条の苗植付装置10へ伝動する伝動機構を備え、外側ケース部7bには左右各々の外側1条の苗植付装置10へ伝動する伝動機構を備えており、植付伝動軸15からの動力は中央ケース部7aでベベルギヤ95,96で横植付伝動軸97に入力され、該横植付伝動軸97が中央ケース部7aから筒ケース178を通って外側ケース部7b内に伝動する構成となっている。   The planting transmission case 7 includes a central case portion 7a located at the center of the left and right and outer case portions 7b located at the left and right sides. The central case portion 7a is provided with a transmission mechanism that transmits to the left and right moving shafts 29 and the central two seedling planting devices 10 described later, and the outer case portion 7b is transmitted to the left and right outer single seedling planting devices 10. The power from the planting transmission shaft 15 is input to the horizontal planting transmission shaft 97 by the bevel gears 95 and 96 in the central case portion 7a, and the horizontal planting transmission shaft 97 is fed from the central case portion 7a. It is configured to transmit through the tube case 178 into the outer case portion 7b.

中央ケース部7aの底面には後部フレ−ム8の上面に戴置する凹部68を備え、該凹部68を後部フレ−ム8上に載せて植付伝動ケース7を載置する構成となっている。そして、後部フレ−ム8の前記第一のリブ65の後面が中央ケース部7aの底部の前面に接触し、前記第二のリブ66の前面が中央ケース部7aの底部の後面に接触し、植付伝動ケース7をしっかりと保持している。   The bottom surface of the central case portion 7a is provided with a recess 68 placed on the upper surface of the rear frame 8, and the planting transmission case 7 is placed with the recess 68 placed on the rear frame 8. Yes. The rear surface of the first rib 65 of the rear frame 8 contacts the front surface of the bottom portion of the central case portion 7a, and the front surface of the second rib 66 contacts the rear surface of the bottom portion of the central case portion 7a. The planting transmission case 7 is firmly held.

また、機体の下部には圃場面に接触する複数3個の接地体となるフロート12を設けており、機体の走行により該フロート12が圃場面を滑走して整地する。フロート12のうち、機体の左右中央のセンターフロート12aは左右内側の2条の苗植付装置10の植付位置を整地し、機体の左右両外側のサイドフロート12bは左右外側の各々1条の苗植付装置10の植付位置を整地する。センターフロート12aは、前端がサイドフロート12bの前端より前側に位置し、サイドフロート12bより前後長が長く、サイドフロート12bより左右幅が広く、サイドフロート12bより接地面積が広い。尚、センターフロート12a及びサイドフロート12bは、側面視で後部フレ−ム8の同じ位置に配置された各々の左右方向の回動支点軸13回りに上下に回動自在に支持され、前部が圃場面の凹凸に追従して上下動する構成となっている。   In addition, a plurality of three floats 12 that are in contact with the farm scene are provided at the lower part of the machine body, and the float 12 slides on the farm scene to level the ground as the machine runs. Among the floats 12, the center float 12a at the center of the left and right sides of the airframe adjusts the planting position of the two seedling planting devices 10 on the left and right inner sides, and the side floats 12b on both the left and right outer sides of the airframe have one each on the left and right outer sides. The planting position of the seedling planting apparatus 10 is leveled. The center float 12a has a front end positioned in front of the front end of the side float 12b, is longer in the front-rear length than the side float 12b, is wider in the left-right width than the side float 12b, and has a larger ground contact area than the side float 12b. The center float 12a and the side float 12b are supported so as to be pivotable up and down around the respective pivotal pivot shafts 13 in the left-right direction arranged at the same position of the rear frame 8 in side view. It is configured to move up and down following the unevenness of the field scene.

エンジン2の出力軸は主伝動ケース3内に突入しており、エンジン2からの動力が主伝動ケース3内に伝達される。主伝動ケース3内には、車輪5、苗植付装置10及び苗載台11への全ての伝動を断つことが出来る主クラッチと、該主クラッチからの動力を車輪5への伝動経路と苗植付装置10及び苗載台11への伝動経路とに分岐する動力分岐部と、前記苗植付装置10及び苗載台11への伝動経路上において該苗植付装置10及び苗載台、11への伝動を断つことができる植付クラッチと、前記車輪5への伝動経路上において噛み合うギヤの切替により路上走行用の前進高速状態、植付作業用の前進低速状態、ギヤが噛み合わずに非伝動となる中立状態及び後進状態の4状態に切り替えて変速できる変速部と、該変速部の伝動下手側で左右の車輪5への伝動を非伝動状態に切り替えできる左右各々のサイドクラッチとを設けている。従って、前記変速部及びサイドクラッチを介して主伝動ケース3から左右に突出する左右各々の走行用伝動軸に伝動される。   The output shaft of the engine 2 enters the main transmission case 3, and the power from the engine 2 is transmitted into the main transmission case 3. In the main transmission case 3, a main clutch that can cut off all transmissions to the wheels 5, the seedling planting device 10 and the seedling mounting table 11, and the power transmission from the main clutch to the wheels 5 and the seedlings. A power branching portion that branches into a planting device 10 and a transmission path to the seedling stage 11, and the seedling planting device 10 and the seedling stage on the transmission path to the seedling planting device 10 and the seedling stage 11; 11 is switched between the planting clutch capable of cutting off the transmission to the wheel 11 and the gear meshing on the transmission path to the wheel 5, the forward high speed state for traveling on the road, the forward low speed state for planting work, and the gears are not meshed. A transmission unit that can change gears by switching to a non-transmission neutral state and a reverse state, and left and right side clutches that can switch the transmission to the left and right wheels 5 to the non-transmission state on the lower transmission side of the transmission unit. Provided. Therefore, it is transmitted to the left and right traveling transmission shafts protruding from the main transmission case 3 to the left and right via the transmission and the side clutch.

該走行用伝動軸が走行伝動ケース4内に突入しており、走行伝動ケース4内でスプロケット及びチェ−ンにより該走行伝動ケース4から左右外側に突出する車軸14に伝動し、車輪5が駆動回転する。走行伝動ケース4は、前端部に位置する前記走行用伝動軸周りに上下に回動可能に設けられ、後端部に位置する車軸14を上下に移動させて車輪5を上下動させる。また、植付クラッチの伝動により、主伝動ケース3から後側に延びる植付伝動軸15を介して植付伝動ケース7内へ伝動される。   The traveling transmission shaft enters the traveling transmission case 4 and is transmitted to the axle 14 projecting outward from the traveling transmission case 4 by the sprocket and chain in the traveling transmission case 4 to drive the wheels 5. Rotate. The traveling transmission case 4 is provided so as to be rotatable up and down around the traveling transmission shaft located at the front end, and moves the wheel 5 up and down by moving the axle 14 located at the rear end up and down. Further, the planting clutch is transmitted into the planting transmission case 7 through the planting transmission shaft 15 extending rearward from the main transmission case 3 by the transmission of the planting clutch.

図12は、主伝動ケース3内の植付駆動軸98から植付伝動軸15への伝動部の断面図で、主伝動ケース3内で軸受103,104で軸支された植付駆動軸98は株間変更クラッチ105で三段階に変速されて回転し、ケース内の軸受104の部分で延長植付駆動軸99をスプライン嵌合106で連結し、この延長植付駆動軸99に小径ベベルギヤ101をスプライン嵌合107している。延長植付駆動軸99のケース壁側はケースに設ける開口部102に取付けた盲蓋108に取付けた軸受109で支持している。   FIG. 12 is a cross-sectional view of a transmission portion from the planting drive shaft 98 in the main transmission case 3 to the planting transmission shaft 15, and the planting drive shaft 98 supported by bearings 103 and 104 in the main transmission case 3. Is rotated in three stages by the stock change clutch 105, and the extended planting drive shaft 99 is connected by the spline fitting 106 at the bearing 104 portion in the case, and the small-diameter bevel gear 101 is connected to the extended planting drive shaft 99. Spline fitting 107 is provided. The case wall side of the extension planting drive shaft 99 is supported by a bearing 109 attached to a blind lid 108 attached to an opening 102 provided in the case.

さらに、延長植付駆動軸99に直交して後方へ向けて植付伝動軸15を軸受110とオイルシ−ル111でケースに支持し、その軸端に前記小径ベベルギヤ101と噛み合わせて大径ベベルギヤ100をスプライン嵌合112している。   Further, the planting transmission shaft 15 is supported on the case by a bearing 110 and an oil seal 111 in a direction orthogonal to the extended planting drive shaft 99 and is engaged with the small-diameter bevel gear 101 at the shaft end. 100 is spline-fitted 112.

前記のケースに設ける開口部102は大径ベベルギヤ100の外径よりも大きく、盲蓋108を外すと、延長植付駆動軸99と小径ベベルギヤ101を一緒に抜き出し、大径ベベルギヤ100も植付伝動軸15の軸端から抜き出せるようになる。   The opening 102 provided in the case is larger than the outer diameter of the large-diameter bevel gear 100. When the blind cover 108 is removed, the extended planting drive shaft 99 and the small-diameter bevel gear 101 are extracted together, and the large-diameter bevel gear 100 is also planted. It can be extracted from the shaft end of the shaft 15.

ベベルギヤ100,101の組み合わせは別の減速比のベベルギヤに変更可能で、この部分で二段階に変速すると、前記株間変更クラッチ105での三段階変速と合わせて六段階に植付株間を変更出来るようになる。なお、小径ベベルギヤ101のスプライン嵌合107部と大径ベベルギヤ100のスプライン嵌合112部を同一にすることで、小径ベベルギヤ101と大径ベベルギヤ100を振り替えて取り付けることで変速比を変えることも出来る。この場合は、変速用ベベルギアを別に用意する必要がない。   The combination of the bevel gears 100 and 101 can be changed to a bevel gear having a different reduction ratio. If the gear is shifted in two steps in this portion, the planting stock can be changed in six steps together with the three-step shift in the stock change clutch 105. become. Note that the spline fitting 107 portion of the small-diameter bevel gear 101 and the spline fitting 112 portion of the large-diameter bevel gear 100 are made the same so that the gear ratio can be changed by changing the small-diameter bevel gear 101 and the large-diameter bevel gear 100. . In this case, it is not necessary to prepare a separate gear bevel gear.

苗植付装置10及び苗載台11は、植付伝動ケース7からの動力で作動する。苗載台11は、植付伝動ケース7の左右に突出して左右移動する左右移動軸29の左右両端から左右各々の連結部材30を介して支持され、苗受板27に沿って左右往復移動し、苗受板27に設けた各条の苗取口28に一株分ずつ苗を供給する。尚、苗載台11の上部には左右移動用レ−ル34を固着して設けており、該左右移動用レ−ル34が後部フレ−ム8の上部から支持される支持ロ−ラ33に案内されて左右移動可能に支持されている。   The seedling planting device 10 and the seedling mount 11 are operated by the power from the planting transmission case 7. The seedling stand 11 is supported from both left and right ends of a left and right moving shaft 29 that protrudes to the left and right of the planting transmission case 7 via left and right connecting members 30, and reciprocates left and right along the seedling receiving plate 27. Then, seedlings are supplied one by one to the seedling inlet 28 of each strip provided on the seedling receiving plate 27. A left / right movement rail 34 is fixedly provided on the upper part of the seedling table 11, and the left / right movement rail 34 is supported from the upper part of the rear frame 8. And is supported so as to be movable left and right.

従って、苗載台11は、下部で苗受板27に左右移動可能に支持され、上部で支持ロ−ラ33に左右移動可能に支持され、植付伝動ケース7からの動力で左右移動軸29を介して左右に往復移動する構成となっている。また、苗載台11には、左右移動端で苗取口28側下側に苗を移送する各条の苗送りベルト35を備えている。この苗送りベルト35は、植付伝動ケース7からの動力で作動し、苗載台11の左右移動端でマット苗を一株分移送して苗を苗取口28へ供給する。   Therefore, the seedling stage 11 is supported by the seedling receiving plate 27 at the lower part so as to be movable left and right, and supported by the support roller 33 at the upper part so as to be movable left and right. It is the structure which reciprocates right and left via. In addition, the seedling mount 11 is provided with a seedling feeding belt 35 for each strip for transferring seedlings to the lower side of the seedling inlet 28 at the left and right moving ends. The seedling feeding belt 35 is operated by the power from the planting transmission case 7, transfers one mat seedling at the left and right moving ends of the seedling mount 11, and supplies the seedling to the seedling inlet 28.

苗植付装置10の駆動構成を図10から図16で詳しく説明する。
植付伝動ケース7の中央ケース部7aは、前記の如く、凹部68を後部フレーム8に乗せて固定しているが、中央ケース部7aに枢支した中央植付駆動軸117に固着するスプロケット123を凹部68から外した位置に配置して、中央植付駆動軸117を後部フレーム8に接近できるようにしている。前記植付伝動軸15の中央ケース部7a側はカップリング131と安全クラッチ132を介してベベルギヤ95に動力を伝動し、このベベルギヤ95を中央ケース部7aの左右中央にクラッチ113を介して取り付けたベベルギヤ96と噛み合わせて回転を横植付伝動軸97に伝動している。
The drive configuration of the seedling planting device 10 will be described in detail with reference to FIGS.
As described above, the central case portion 7a of the planting transmission case 7 has the recess 68 mounted on the rear frame 8 and is fixed thereto. However, the sprocket 123 fixed to the central planting drive shaft 117 pivotally supported by the central case portion 7a. Is disposed at a position removed from the recess 68 so that the central planting drive shaft 117 can be approached to the rear frame 8. The center case portion 7a side of the planting transmission shaft 15 transmits power to the bevel gear 95 via the coupling 131 and the safety clutch 132, and the bevel gear 95 is attached to the left and right center of the center case portion 7a via the clutch 113. The rotation is transmitted to the horizontal planting transmission shaft 97 by meshing with the bevel gear 96.

横植付伝動軸97には左右中央の一対の苗植付装置10,10に伝動するスプロケット114と左右端部でそれぞれ外側の苗植付装置10に伝動するスプロケット115,116を固着している。中央のスプロケット114は中央ケース部7aに枢支した中央植付駆動軸117に固着のスプロケット123にチェン122で伝動し、左右端部に固着したスプロケット115,116は、外側ケース部7b,7bに枢支した外植付駆動軸118,119に固着したスプロケット121,125にチェン120,124で伝動している。   A sprocket 114 that is transmitted to a pair of right and left seedling planting devices 10 and 10 and sprockets 115 and 116 that are respectively transmitted to the outer seedling planting device 10 at the left and right ends are fixed to the horizontal planting transmission shaft 97. . The central sprocket 114 is transmitted to the sprocket 123 fixed to the central planting drive shaft 117 pivotally supported by the central case portion 7a by the chain 122, and the sprockets 115 and 116 fixed to the left and right end portions are connected to the outer case portions 7b and 7b. The chains 120 and 124 are transmitted to sprockets 121 and 125 fixed to the pivoted externally attached drive shafts 118 and 119.

尚、外側ケース部7b内のチェン120,124は、図17に示す如く、チェンガイド172でテンションを付与しているが、このチェンガイド172は下側をケースに固定することで、外側ケース部7bの上部と苗載台11の間隔を広げている。また、外側ケース部7bを前後対称形として同一形状のケースを左右両側で使えるようにしている。外側ケース部7bの下側前後に設ける取付部の後側を後部フレーム8に設ける支持部材に取り付け、前側の取付部を前部フレ−ム6と連結しサイドフロート12bと連結している。   Note that the chains 120 and 124 in the outer case portion 7b are tensioned by a chain guide 172 as shown in FIG. 17, but the chain guide 172 is fixed to the case on the lower side so that the outer case portion is fixed. The space | interval of the upper part of 7b and the seedling mounting stand 11 is expanded. In addition, the outer case portion 7b is symmetrical in the longitudinal direction so that the same shape case can be used on both the left and right sides. The rear side of the mounting portion provided on the lower and front sides of the outer case portion 7b is attached to a support member provided on the rear frame 8, and the front mounting portion is connected to the front frame 6 and connected to the side float 12b.

図18は、植付アーム126,127,128,129に取り付ける揺動クランク173で、軸174,175を軸受176,177で回転可能に支持し、軸174,175の突出角軸部を植付アーム126,127,128,129等に取り付けている。   FIG. 18 shows a swing crank 173 attached to the planting arms 126, 127, 128, and 129. The shafts 174 and 175 are rotatably supported by bearings 176 and 177, and the projecting angular shaft portions of the shafts 174 and 175 are planted. It is attached to the arms 126, 127, 128, 129, etc.

中央植付駆動軸117と外植付駆動軸118,119が回転することによって、それぞれ植付アーム126,127,128,129がクランク状に動いて、苗植付爪31が苗取口28上の苗を掻き取り、掻き取った苗を押出具32が圃場面に向かって押し出して圃場に苗を植え付ける。   By rotating the central planting drive shaft 117 and the external planting drive shafts 118 and 119, the planting arms 126, 127, 128, and 129 move in a crank shape, respectively, and the seedling planting claws 31 are placed on the seedling inlet 28. The seedling is scraped off, and the scraped seedling is pushed out by the pusher 32 toward the field scene to plant the seedling in the field.

図13と図14は、植付伝動軸15の中央ケース部7aへの取付部を示し、中央ケース部7aの底部にベベルギヤ95を半割メタル130で固定した軸受133で回転可能に支持し、このベベルギヤ95に安全クラッチ132の軸138を嵌合して固定している。安全クラッチ132は、カップリング131で植付伝動軸15に連結し、中央ケース部7aをオイルシール134で気密に保持している。また、安全クラッチ132と平行して、ベベルギヤ96の回転を横植付伝動軸97に伝動する植付クラッチ139を作動させる植付クラッチピン135を前記半割メタル130で中央ケース部7aに取付けている。植付クラッチピン135を作動するワイヤ136をワイヤ受137と押え板140で中央ケース部7aに取付けている。   FIGS. 13 and 14 show an attachment portion of the planting transmission shaft 15 to the central case portion 7a. The bevel gear 95 is rotatably supported by a bearing 133 fixed to the bottom portion of the central case portion 7a with a half metal 130, A shaft 138 of the safety clutch 132 is fitted and fixed to the bevel gear 95. The safety clutch 132 is coupled to the planting transmission shaft 15 by a coupling 131, and the central case portion 7a is airtightly held by an oil seal 134. In parallel with the safety clutch 132, a planting clutch pin 135 for operating the planting clutch 139 that transmits the rotation of the bevel gear 96 to the lateral planting transmission shaft 97 is attached to the central case portion 7a by the half metal 130. Yes. A wire 136 for operating the planting clutch pin 135 is attached to the central case portion 7 a by a wire receiver 137 and a presser plate 140.

図11は、中央ケース部7aの上蓋147を開いた状態を示し、前側から苗送り軸141、リ−ドカム軸142、左右移動軸29を横架している。リ−ドカム軸142に固着のギヤ145に前記横植付伝動軸97のギヤ146が噛み合って動力を伝動し、リ−ドカム軸142のカムに係合するリードカム143を左右移動軸29に固着して左右移動軸29を左右往復移動し、左右移動軸29に固着するアーム144が右端に移動したタイミングで苗送り軸141が回転する。リ−ドカム軸142は、左右両端を中央ケース部7aに設ける軸受162,163で支持しているが、一方の軸受162を加工したU溝に嵌合し、他方の軸受163を鋳ばなしのU溝に勘合している。   FIG. 11 shows a state in which the upper cover 147 of the central case portion 7a is opened, and the seedling feed shaft 141, the lead cam shaft 142, and the left / right moving shaft 29 are horizontally mounted from the front side. The gear 145 fixed to the lead cam shaft 142 is meshed with the gear 146 of the horizontal planting transmission shaft 97 to transmit power, and the lead cam 143 engaged with the cam of the lead cam shaft 142 is fixed to the left and right moving shaft 29. Thus, the seedling feed shaft 141 rotates at the timing when the arm 144 fixed to the left and right moving shaft 29 moves to the right end. The left and right ends of the lead cam shaft 142 are supported by bearings 162 and 163 provided in the central case portion 7a, but one of the bearings 162 is fitted into a processed U groove, and the other bearing 163 is made of a cast U It fits into the groove.

図15は、苗送り軸141の中央ケース部7aへの取付け状態を示している。苗送り軸141に鍔付きブッシュ148,149を外嵌し、この鍔付きブッシュ148,149を中央ケース部7aと上蓋147で挟み込んでいるが、一方の鍔付きブッシュ148は鍔部153を中央ケース部7aと上蓋147に形成した溝部154,155で挟み込んで横移動しないようにし、他方の鍔付きブッシュ149は鍔部156に苗送り従動カム151との間に設けるばね152を当接している。150はオイルシ−ルである。   FIG. 15 shows a state in which the seedling feed shaft 141 is attached to the central case portion 7a. Bushed bushes 148 and 149 are externally fitted to the seedling feed shaft 141, and the bushed bushes 148 and 149 are sandwiched between the central case portion 7a and the upper lid 147. One of the bushed bushes 148 has the flanged portion 153 in the central case. The other flanged bushing 149 abuts a spring 152 provided between the collar portion 156 and the seedling feed driven cam 151 so as not to move laterally by being sandwiched between the groove portions 154 and 155 formed in the portion 7a and the upper lid 147. 150 is an oil seal.

図16は、左右移動軸29の中央ケース部7aへの取付け状態を示している。左右移動軸29に鍔付きブッシュ157を外嵌し、この鍔付きブッシュ157を中央ケース部7aと上蓋147で挟み込んで、鍔付きブッシュ157の鍔部158を中央ケース部7aと上蓋147に形成した溝部159,160で挟み込んで横移動しないようにしている。161はオイルシ−ルである。   FIG. 16 shows a state in which the left and right moving shaft 29 is attached to the central case portion 7a. A flanged bush 157 is externally fitted to the left and right moving shaft 29, and the flanged bush 157 is sandwiched between the central case portion 7a and the upper lid 147, and a flange portion 158 of the flanged bush 157 is formed in the central case portion 7a and the upper lid 147. The grooves 159 and 160 are sandwiched so as not to move laterally. 161 is an oil seal.

なお、まず左右移動軸29とリードカム軸142を中央ケース部7aの加工したU溝に嵌合しその後苗送り軸141を鋳ばなしのU溝に嵌合して組み立てている。
図4において、主伝動ケース3の左側の側部には油圧ポンプを固着し、主伝動ケース3の後部には油圧バルブユニット69を固着し、該油圧バルブユニット69の後側に単動式の油圧昇降シリンダ16を固着している。この油圧昇降シリンダ16は、前後方向に移動する移動部材となるシリンダロッド17を後部に備え、前部フレ−ム6の上方に配置される。油圧バルブユニット69の切替操作により油圧ポンプからの油圧を油圧昇降シリンダ16へ供給すると、シリンダロッド17が後方へ移動する。また、油圧昇降シリンダ16内の油圧を油圧タンクとなる主伝動ケース3内へ戻す状態に切り替えると、機体の自重によりシリンダロッド17が前方へ移動する。
First, the left / right moving shaft 29 and the lead cam shaft 142 are fitted into the processed U groove of the central case portion 7a, and then the seedling feed shaft 141 is fitted into the uncast U groove.
In FIG. 4, a hydraulic pump is fixed to the left side of the main transmission case 3, a hydraulic valve unit 69 is fixed to the rear of the main transmission case 3, and a single-acting type is provided to the rear of the hydraulic valve unit 69. The hydraulic lifting cylinder 16 is fixed. The hydraulic elevating cylinder 16 includes a cylinder rod 17 serving as a moving member that moves in the front-rear direction, and is disposed above the front frame 6. When the hydraulic pressure from the hydraulic pump is supplied to the hydraulic lift cylinder 16 by the switching operation of the hydraulic valve unit 69, the cylinder rod 17 moves backward. Further, when switching to a state in which the hydraulic pressure in the hydraulic lifting cylinder 16 is returned to the main transmission case 3 serving as a hydraulic tank, the cylinder rod 17 moves forward due to the weight of the machine body.

図5,6において、シリンダロッド17の後端部には後側から切り欠いた左右方向に連通する切り欠き溝17aを備え、該切り欠き溝17aに左右に延びる中継部材となる中継リンク部材18の左右中央部が嵌まるように挿入されている。中継リンク部材18は、プレート状の基部18aと左右両端で前記基部18aから上方に立ち上がる連結部18bとを備え、左右対称な形状となっている。   5 and 6, the rear end portion of the cylinder rod 17 is provided with a notch groove 17a that is notched from the rear side and communicates in the left-right direction, and the relay link member 18 that serves as a relay member that extends to the left and right in the notch groove 17a. It is inserted so that the right and left center part of the can fit. The relay link member 18 includes a plate-like base portion 18a and connecting portions 18b that rise upward from the base portion 18a at both left and right ends, and has a symmetrical shape.

シリンダロッド17の後側の端部には切り欠き溝17aを上下に貫通する連結軸19を設け、該連結軸19が中継リンク部材18の左右中央部に設けた第一の孔18cを貫通してシリンダロッド17と中継リンク部材18とが連結されている。尚、中継リンク部材18の左右中央部の前面18dと切り欠き溝17aの底面17bとは、互いに接触する平面となっている。また、第一の孔18cは、連結軸19の軸径よりも大きい孔径に設定され、前後に長い長孔状に形成されている。   A connecting shaft 19 that vertically passes through the notch groove 17 a is provided at the rear end of the cylinder rod 17, and the connecting shaft 19 passes through a first hole 18 c provided in the left and right center portion of the relay link member 18. The cylinder rod 17 and the relay link member 18 are connected. Note that the front surface 18d at the center of the left and right of the relay link member 18 and the bottom surface 17b of the cutout groove 17a are flat surfaces that are in contact with each other. The first hole 18c is set to have a larger hole diameter than the shaft diameter of the connecting shaft 19, and is formed in a long hole shape that is long in the front and rear direction.

中継リンク部材18の連結部18bは、前側部分18b−1と後側部分18b−2とを備え、更に前側部分18b−1と後側部分18b−2とを機体の左右方向外側の端部で繋ぐ接続部分18b−3を備える。前側部分18b−1及び後側部分18b−2は前後に貫通する第二の孔18b−4を備え、該孔18b−4に連結ロッド20の後部が貫通している。従って、中継リンク部材18の左右の連結部18bに左右各々の連結ロッド20が貫通している。   The connecting portion 18b of the relay link member 18 includes a front side portion 18b-1 and a rear side portion 18b-2, and further connects the front side portion 18b-1 and the rear side portion 18b-2 at an end portion on the outer side in the left-right direction of the airframe. A connecting portion 18b-3 to be connected is provided. The front part 18b-1 and the rear part 18b-2 are provided with a second hole 18b-4 penetrating in the front-rear direction, and the rear part of the connecting rod 20 passes through the hole 18b-4. Therefore, the left and right connecting rods 20 penetrate the left and right connecting portions 18b of the relay link member 18.

連結ロッド20の前端は走行伝動ケース4の上側に固着された左右各々のアーム21に連結されている。連結ロッド20の後端の外周には圧縮ばね22を設け、該圧縮ばね22の前側に設けた前側ばね受け板23が連結部18bの後側部分18b−2の後面に接触し、圧縮ばね22の後側に設けた後側ばね受け板24が連結ロッド20に移動しないように締め付けられた固定具となるよう二重にナットを締付けたダブルナット25の前面に接触している。   The front end of the connecting rod 20 is connected to the left and right arms 21 fixed to the upper side of the traveling transmission case 4. A compression spring 22 is provided on the outer periphery of the rear end of the connecting rod 20, and a front spring receiving plate 23 provided on the front side of the compression spring 22 contacts the rear surface of the rear portion 18b-2 of the connecting portion 18b. A rear spring receiving plate 24 provided on the rear side is in contact with the front surface of a double nut 25 that is double-tightened with a nut so as to be a fixture fastened so as not to move to the connecting rod 20.

従って、車輪5の接地荷重を、走行伝動ケース4、アーム21、連結ロッド20及び圧縮ばね22等を介して中継リンク部材18が受けている。連結ロッド20の中途部には板状の規制具26を固着しており、該規制具26が連結部18bの前側部分18b−1の前側に位置している。従って、車輪5の接地荷重が極めて小さいとき、圧縮ばね22のばね力により規制具26が連結部18bの前側部分18b−1の前面に接触し、車輪5が所定以下に降下しないように規制している。尚、前側ばね受け板23と連結部18bの後側部分18b−2との互いの接触面及び規制具26と連結部18bの前側部分18b−1との互いの接触面は、平面になっている。また、第二の孔18b−4は、連結ロッド20の軸径よりも大きい孔径に設定されている。   Therefore, the relay link member 18 receives the ground load of the wheel 5 through the traveling transmission case 4, the arm 21, the connecting rod 20, the compression spring 22, and the like. A plate-like restricting tool 26 is fixed to the middle part of the connecting rod 20, and the restricting tool 26 is located on the front side of the front portion 18b-1 of the connecting part 18b. Therefore, when the ground contact load of the wheel 5 is extremely small, the restricting tool 26 is brought into contact with the front surface of the front portion 18b-1 of the connecting portion 18b by the spring force of the compression spring 22, and the wheel 5 is restricted so as not to fall below a predetermined value. ing. The contact surfaces of the front spring receiving plate 23 and the rear portion 18b-2 of the connecting portion 18b and the contact surfaces of the restrictor 26 and the front portion 18b-1 of the connecting portion 18b are flat. Yes. The second hole 18b-4 is set to have a larger hole diameter than the shaft diameter of the connecting rod 20.

従って、油圧ポンプからの油圧を油圧昇降シリンダ16内へ供給するべく油圧バルブユニット69を切り替えると、シリンダロッド17が後方へ移動し、切り欠き溝17aの底面17bで中継リンク部材18の左右中央部の前面18dが後側に押されて中継リンク部材18が後側へ移動し、該中継リンク部材18の左右の連結部18bの後側部分18b−2が圧縮ばね22を介して左右の連結ロッド20を後側に引き、左右のアーム21を後側に回動させることにより左右の走行伝動ケース4が下側に回動し、左右の車輪5が下動して圃場に対して機体が上昇する。   Accordingly, when the hydraulic valve unit 69 is switched so as to supply the hydraulic pressure from the hydraulic pump into the hydraulic lift cylinder 16, the cylinder rod 17 moves rearward and the left and right central portions of the relay link member 18 at the bottom surface 17b of the notch groove 17a. The front link 18d is pushed rearward, the relay link member 18 moves rearward, and the left and right connecting portions 18b-2 of the relay link member 18 are connected to the left and right connecting rods via the compression springs 22. By pulling 20 to the rear side and rotating the left and right arms 21 to the rear side, the left and right traveling transmission cases 4 rotate downward, and the left and right wheels 5 move downward to raise the aircraft relative to the field. To do.

逆に、油圧昇降シリンダ16内の油圧を主伝動ケース3内へ戻すべく油圧バルブユニット69を切り替えると、左右の車輪5の接地荷重により左右のアーム21、左右の連結ロッド20及び中継リンク部材18等を介してシリンダロッド17が前方へ戻され、左右の車輪5が上動して圃場に対して機体が下降する。   On the contrary, when the hydraulic valve unit 69 is switched to return the hydraulic pressure in the hydraulic lifting cylinder 16 to the main transmission case 3, the left and right arms 21, the left and right connecting rods 20, and the relay link member 18 are caused by the ground load of the left and right wheels 5. Etc., the cylinder rod 17 is returned to the front, the left and right wheels 5 are moved up, and the aircraft is lowered with respect to the field.

また、機体の左右傾斜により接地荷重が左右の車輪5で所定以上相違すると、切り欠き溝17aの底面17bの左右一方の端を支点に中継リンク部材18が前後に回動して左右の連結部18bが互いに前後反対側に移動し、接地荷重が大きい側の車輪5が下動し反対側の車輪5が上動し、左右水平姿勢となるよう機体の左右傾斜姿勢が修正される。このとき、連結軸19により、中継リンク部材18がシリンダロッド17の切り欠き溝17aから脱落するようなことを防止している。   Further, if the grounding load is different from the left and right wheels 5 by a predetermined inclination due to the left and right inclination of the fuselage, the relay link member 18 rotates back and forth with the left and right ends of the bottom surface 17b of the notch groove 17a as a fulcrum. The left and right inclined postures of the airframe are corrected so that the wheels 18 on the side where the ground contact load is large are moved downward and the wheels 5 on the opposite side are moved upward so that the left and right horizontal postures are obtained. At this time, the connecting shaft 19 prevents the relay link member 18 from dropping from the notch groove 17a of the cylinder rod 17.

左右の連結ロッド20ひいては左右の連結部18bの間の左右中央位置に対して切り欠き溝17aの底面17bの左右端は左右に偏位しているので、左右の車輪5の接地荷重の相違が小さいときには、中継リンク部材18が前後に回動せずに中継リンク部材18の接触面となる前面18dと切り欠き溝17aの底面17bとが接触した状態が維持され、左右の車輪5が相対的に上下動せず、左右の車輪5が個別に無闇に上下動することによりかえって機体の左右傾斜姿勢が不安定になるようなことを防止している。   Since the left and right ends of the bottom surface 17b of the notch groove 17a are displaced to the left and right with respect to the left and right connecting rods 20 and thus the left and right central positions between the left and right connecting portions 18b, there is a difference in grounding load between the left and right wheels 5. When it is small, the state where the relay link member 18 does not rotate back and forth and the front surface 18d as the contact surface of the relay link member 18 and the bottom surface 17b of the notch groove 17a are in contact with each other is maintained. Therefore, the left and right wheels 5 individually move up and down in darkness to prevent the left and right tilt posture of the aircraft from becoming unstable.

また、切り欠き溝17aの底面17bの左右端が左右に偏位しているので、中継リンク部材18が前後に回動しても、圧縮ばね22や車輪5からの荷重により中継リンク部材18が中継リンク部材18の前面18dと切り欠き溝17aの底面17bとが接触する基準の回動位置に戻りやすく、機体の姿勢を安定させることができる。   Further, since the left and right ends of the bottom surface 17b of the notch groove 17a are deviated left and right, even if the relay link member 18 rotates back and forth, the relay link member 18 is caused by the load from the compression spring 22 and the wheels 5. It is easy to return to the reference rotation position where the front surface 18d of the relay link member 18 and the bottom surface 17b of the cutout groove 17a are in contact with each other, and the attitude of the airframe can be stabilized.

更に、接触面となる切り欠き溝17aの底面17b、中継リンク部材18の左右中央部の前面18d、前側ばね受け板23の前面、連結部18bの後側部分18b−2の後面、規制具26の後面及び連結部18bの前側部分18b−1の前面は平面となっているので、中継リンク部材18が回動して中継リンク部材18の左右中央部の前面18d、連結部18bの後側部分18b−2の後面及び連結部18bの前側部分18b−1の前面の角度が変化しようとするのを圧縮ばね22の付勢力により抑えることができ、機体の左右傾斜が圃場の左右傾斜に近づくように促し、機体の左右傾斜姿勢が不安定になるようなことを防止している。   Further, the bottom surface 17b of the notch groove 17a serving as the contact surface, the front surface 18d at the center of the left and right of the relay link member 18, the front surface of the front spring receiving plate 23, the rear surface of the rear portion 18b-2 of the connecting portion 18b, the restrictor 26 Since the rear surface and the front surface of the front portion 18b-1 of the connecting portion 18b are flat, the relay link member 18 rotates and the front surface 18d at the center of the left and right of the relay link member 18 and the rear portion of the connecting portion 18b. The angle of the rear surface of 18b-2 and the front surface of the front portion 18b-1 of the connecting portion 18b can be prevented from being changed by the biasing force of the compression spring 22, so that the horizontal inclination of the machine body approaches the horizontal inclination of the field. This prevents the aircraft from becoming unstable when it is tilted.

また、連結ロッド20の規制具26により、前進側に回転する車輪5の駆動反力で該車輪5が下動して機体の対地高さや左右傾斜姿勢が不適正になるのを防止している。
尚、二重ナット25を弛めて連結ロッド20における二重ナット25の位置を調節することにより、機体の左右傾斜姿勢を調節することができる。この調節は、左右一方の二重ナット25の位置を調節しても、左右両方の二重ナット25の位置を調節しても良い。この二重ナット25からなる調節部分は機体平面視でボンネットカバ−43の外側に位置しているので、作業者はボンネットカバ−43が邪魔にならずに上側から二重ナット25の位置調節を容易に行える。
Further, the restricting tool 26 of the connecting rod 20 prevents the wheel 5 from moving downward due to the driving reaction force of the wheel 5 rotating forward, so that the height of the fuselage to the ground and the right-and-left tilt posture are improper. .
It should be noted that by adjusting the position of the double nut 25 in the connecting rod 20 by loosening the double nut 25, it is possible to adjust the left-right inclined posture of the aircraft. This adjustment may be performed by adjusting the positions of the left and right double nuts 25 or by adjusting the positions of both the left and right double nuts 25. Since the adjustment portion composed of the double nut 25 is located outside the bonnet cover 43 in plan view, the operator can adjust the position of the double nut 25 from above without the bonnet cover 43 getting in the way. Easy to do.

図7は、走行伝動ケース4の回動基部を示し、主伝動ケース3から伸ばした取付杆168に横架した棒状の規制具165を左右のアーム21,21にわたってその回動範囲に設けて、左右のアーム21に当接して車輪5が下がり過ぎるのを規制している。   FIG. 7 shows a rotation base of the traveling transmission case 4, and a rod-shaped restricting tool 165 laid horizontally on a mounting rod 168 extending from the main transmission case 3 is provided in the rotation range over the left and right arms 21, 21. It abuts against the left and right arms 21 to restrict the wheels 5 from being lowered too much.

なお、車輪5が下がり過ぎるのを規制する構成としては、図8,9に示す如く、連結ロッド20,20の下側に当接部材166を突設し、この当接部材166に当たってアーム21,21の後方へ回動するのを阻止する棒状の規制具167を主伝動ケース3から伸ばした取付杆169に設ける構成でも良い。   As a configuration for restricting the wheel 5 from being lowered too much, as shown in FIGS. 8 and 9, a contact member 166 is provided below the connecting rods 20 and 20, and the arm 21, Alternatively, a rod-shaped restricting tool 167 that prevents the 21 from rotating backward may be provided on the mounting rod 169 extended from the main transmission case 3.

規制具165や規制具167は、片側の車輪5が下がりすぎて機体が左右へ極端に傾くのを防ぎ、旋回の際に左右の車輪5を均等に押し下げてフロート12を地面から浮かせた状態にする。   The restricting tool 165 and the restricting tool 167 prevent the vehicle body from excessively tilting to the left and right because the wheel 5 on one side is lowered too much, and the left and right wheels 5 are evenly pushed down when turning to make the float 12 float from the ground. To do.

操縦ハンドル9の前側で且つ苗載台11の後側には、車輪5、苗植付装置10及び苗載台11への伝動を断つことができる主クラッチレバー36と、苗植付装置10及び苗載台11への伝動を断ったり油圧昇降シリンダ16を作動させるべく油圧バルブユニットの油路を切り替えたりする植付昇降レバー37とを設けている。前記主クラッチレバー36は、入位置と切位置との2つの操作位置に操作できる構成となっており、主伝動ケース3内の主クラッチを操作して伝動状態と非伝動状態とに切り替える。   On the front side of the steering handle 9 and on the rear side of the seedling stage 11, the wheel 5, the seedling planting device 10, a main clutch lever 36 that can cut off transmission to the seedling stage 11, the seedling planting device 10, A planting elevating lever 37 for switching the oil passage of the hydraulic valve unit to cut off the transmission to the seedling table 11 or to operate the hydraulic elevating cylinder 16 is provided. The main clutch lever 36 is configured to be operated in two operation positions, an on position and a disengagement position, and the main clutch in the main transmission case 3 is operated to switch between a transmission state and a non-transmission state.

前記植付昇降レバー37は、植付位置、下降位置、中立位置及び上昇位置の4つの操作位置に操作できる構成となっており、主伝動ケース3内の植付クラッチを操作して植付伝動軸15を駆動状態と非駆動状態とに切り替えると共に、油圧昇降シリンダ16を作動させて左右の車輪5を上下動させる。   The planting lifting / lowering lever 37 is configured to be operated in four operation positions including a planting position, a descending position, a neutral position, and an ascending position, and operates a planting clutch in the main transmission case 3 to plant planting. The shaft 15 is switched between a driving state and a non-driving state, and the hydraulic elevating cylinder 16 is operated to move the left and right wheels 5 up and down.

すなわち、植付昇降レバー37を植付位置に操作すると、植付クラッチを伝動状態にして苗植付装置10及び苗載台11を作動させると共に、機体の自重で左右の車輪5が接地荷重を受けることにより油圧昇降シリンダ16内の油圧を主伝動ケース3内に戻して左右の車輪5を上動させ、機体を下降させてフロート12が接地状態となる。前記下降位置に操作すると、上述のように機体を下降させた状態で、植付クラッチを非伝動状態にして苗植付装置10及び苗載台11の作動を停止させる。前記中立位置に操作すると、上述のように苗植付装置10及び苗載台11の作動を停止させた状態で、油圧昇降シリンダ16への油路を遮断して油圧昇降シリンダ16の作動を固定し、左右の車輪5を任意の上下位置で固定して機体の昇降を停止させる。前記上昇位置に操作すると、上述のように苗植付装置10及び苗載台11の作動を停止させた状態で、油圧昇降シリンダ16内へ油圧を供給して左右の車輪5を下動させ、機体を上昇させてフロート12が非接地状態となる。   That is, when the planting elevating lever 37 is operated to the planting position, the planting clutch is set in the transmission state to operate the seedling planting device 10 and the seedling mounting table 11, and the left and right wheels 5 are subjected to ground load by the weight of the machine body. As a result, the hydraulic pressure in the hydraulic lift cylinder 16 is returned to the main transmission case 3 to move the left and right wheels 5 upward, and the fuselage is lowered to bring the float 12 into a grounded state. When operated to the lowered position, the planting clutch is brought into a non-transmission state in a state where the machine body is lowered as described above, and the operations of the seedling planting device 10 and the seedling mounting table 11 are stopped. When operated to the neutral position, the operation of the hydraulic lifting cylinder 16 is fixed by blocking the oil passage to the hydraulic lifting cylinder 16 in a state where the operations of the seedling planting device 10 and the seedling mount 11 are stopped as described above. Then, the right and left wheels 5 are fixed at arbitrary vertical positions, and the elevation of the aircraft is stopped. When operating to the raised position, with the operation of the seedling planting device 10 and the seedling mounting table 11 stopped as described above, hydraulic pressure is supplied into the hydraulic lifting cylinder 16 to move the left and right wheels 5 downward, The airframe is raised and the float 12 is not grounded.

また、センターフロート12aの上下動で該センターフロート12aの前部に連結されるロッドを介して油圧バルブユニットの油路を切り替える構成となっており、センターフロート12aの前部が上動すると油圧昇降シリンダ16内へ油圧を供給して左右の車輪5を下動させる構成となっている。   Further, when the center float 12a moves up and down, the oil passage of the hydraulic valve unit is switched via a rod connected to the front portion of the center float 12a. The hydraulic pressure is supplied into the cylinder 16 to move the left and right wheels 5 downward.

従って、植付昇降レバー37が前記植付位置及び下降位置のとき、センターフロート12aが圃場面に接地して上下動することにより該センターフロート12aが所望の前後姿勢になるよう左右の車輪5が上下動し、機体が所定の対地高さとなるよう昇降制御される構成となっている。   Therefore, when the planting elevating lever 37 is in the planting position and the lowered position, the left and right wheels 5 are moved so that the center float 12a moves up and down while touching the field scene so that the center float 12a assumes a desired front and back posture. It is configured to move up and down and to move up and down so that the airframe has a predetermined ground height.

図4で具体構成について説明すると、油圧バルブユニット69内の油圧バルブは、ロータリー式のバルブであり、左右方向のスプール軸72を回動させることにより、油路を切り替える構成となっている。前記スプール軸72と一体で回動する油圧操作アーム73を油圧バルブユニット69の右側に設けており、該油圧操作アーム69を右回りに回動させるにつれて上昇状態、中立状態及び下降状態に油路が切り替わる。この油圧操作アーム73に植付昇降レバー37からの昇降操作ワイヤ74を連結しており、植付昇降レバー37を操作すると昇降操作ワイヤ74を介して油圧操作アーム73が回動操作される構成となっている。   The specific configuration will be described with reference to FIG. 4. The hydraulic valve in the hydraulic valve unit 69 is a rotary valve, and is configured to switch the oil path by rotating the spool shaft 72 in the left-right direction. A hydraulic operating arm 73 that rotates integrally with the spool shaft 72 is provided on the right side of the hydraulic valve unit 69, and the oil path is moved upward, neutral, and lowered as the hydraulic operating arm 69 is rotated clockwise. Switches. A lifting operation wire 74 from the planting lifting lever 37 is connected to the hydraulic operation arm 73, and when the planting lifting lever 37 is operated, the hydraulic operation arm 73 is rotated via the lifting operation wire 74. It has become.

油圧操作アーム73の右側にはスプール軸回りに回動自在なフロート上下アーム75を設けており、該フロート上下動アーム75の後端部とセンターフロート12aの前部とをフロート上下動ロッド76で連結している。一方、油圧操作アーム73の前端部は、右側に屈曲してフロート上下動アーム75の前端部の下方に位置している。   On the right side of the hydraulic operation arm 73, there is provided a float vertical arm 75 that is rotatable around the spool axis. A float vertical movement rod 76 connects the rear end of the float vertical movement arm 75 and the front of the center float 12a. It is connected. On the other hand, the front end portion of the hydraulic operation arm 73 is bent to the right and is positioned below the front end portion of the float vertical movement arm 75.

従って、油圧操作アーム73の回動位置に拘らず、センターフロート12aの前部が上動すると、フロート上下動ロッド76を介してフロート上下動アーム75が左回りに回動し、該フロート上下動アーム75の前端部が油圧操作アーム73の前端部を押し下げ、該油圧操作アーム73を左回りに回動させて上昇状態に切り替える構成となっている。   Therefore, regardless of the rotation position of the hydraulic operation arm 73, when the front part of the center float 12a moves upward, the float vertical movement arm 75 rotates counterclockwise via the float vertical movement rod 76, and the float vertical movement moves. The front end portion of the arm 75 pushes down the front end portion of the hydraulic operation arm 73, and the hydraulic operation arm 73 is rotated counterclockwise to switch to the raised state.

また、植付昇降レバー37が植付位置又は下降位置のとき、センターフロート12aの前部が下動すると、フロート上下動ロッド76を介してフロート上下動アーム75が右回りに回動して該フロート上下動アーム75の前端部が上動するので、該フロート上下動アーム75の前端部に接触して押し下げられていた油圧操作アーム73の前端部も上動し、該油圧操作アーム73を右回りに回動させて下降状態に切り替える構成となっている。   Further, when the planting lift lever 37 is in the planting position or the lowered position, when the front part of the center float 12a moves downward, the float vertical movement arm 75 rotates clockwise via the float vertical movement rod 76, Since the front end portion of the float vertical movement arm 75 moves upward, the front end portion of the hydraulic operation arm 73 that has been pushed down in contact with the front end portion of the float vertical movement arm 75 also moves upward, causing the hydraulic operation arm 73 to move to the right. It is configured to rotate around and switch to a lowered state.

尚、油圧操作アーム73は、スプリング77により、右回り下降状態側に回動する方向に引っ張られている。また、油圧操作アーム73は、植付昇降レバー37を上昇位置に操作しているとき、昇降操作ワイヤ74に規制されているので、中立状態及び下降状態に回動できないようになっている。同様に、油圧操作アーム73は、植付昇降レバー37を中立位置に操作しているとき、昇降操作ワイヤ74に規制されているので、下降状態に回動できないようになっている。   The hydraulic operation arm 73 is pulled by the spring 77 in the direction of turning clockwise. Further, since the hydraulic operation arm 73 is restricted by the lifting operation wire 74 when the planting lifting lever 37 is operated to the raised position, the hydraulic operation arm 73 cannot be rotated to the neutral state or the lowered state. Similarly, since the hydraulic operation arm 73 is restricted by the lifting operation wire 74 when the planting lifting lever 37 is operated to the neutral position, the hydraulic operation arm 73 cannot rotate in the lowered state.

油圧操作アーム73の上端部には、自動復帰用ロッド78を連結している。尚、前記スプリング77の端部は、前記自動復帰用ロッド78に引っ掛けられている。自動復帰用ロッド78の他端は、シリンダロッド17と共に前後に移動するカラ一79に固着した移動体80を貫通して後方にまで延び、二重のナット81による引っ掛け部分を形成している。   An automatic return rod 78 is connected to the upper end of the hydraulic operation arm 73. The end of the spring 77 is hooked on the automatic return rod 78. The other end of the automatic return rod 78 passes through a moving body 80 fixed to a collar 79 that moves back and forth together with the cylinder rod 17 and extends rearward to form a hook portion by a double nut 81.

従って、油圧操作アーム73が上昇状態に回動してシリンダロッド17が後側に移動し、移動体80に前記二重のナット81が引っ掛かって自動復帰用ロッド78が後方に引かれると、油圧操作アーム73が強制的に中立状態に回動させられ、シリンダロッド17の移動が停止して機体の上昇作動が停止する構成となっている。つまり、シリンダロッド17が移動ストロ−クにおける後側の移動端まで移動すると、自動的に油路を中立状態に切り替え、油圧ポンプの駆動負荷が増大するのを防止している。   Accordingly, when the hydraulic operation arm 73 is rotated upward to move the cylinder rod 17 to the rear side, the double nut 81 is hooked on the moving body 80 and the automatic return rod 78 is pulled rearward. The operation arm 73 is forcibly turned to the neutral state, the movement of the cylinder rod 17 is stopped, and the ascending operation of the airframe is stopped. That is, when the cylinder rod 17 moves to the rear moving end of the moving stroke, the oil passage is automatically switched to the neutral state to prevent an increase in the driving load of the hydraulic pump.

尚、自動復帰用ロッド78は、通常の状態では中継リンク部材18の上方に位置している。よって、自動復帰用ロッド78により、シリンダロッド17の位置に対する油圧操作アーム73の作動タイミングが安定し、油圧操作アーム73の中立状態への自動復帰タイミングの作動精度が向上する。   The automatic return rod 78 is positioned above the relay link member 18 in a normal state. Therefore, the automatic return rod 78 stabilizes the operation timing of the hydraulic operation arm 73 with respect to the position of the cylinder rod 17, and the operation accuracy of the automatic return timing to the neutral state of the hydraulic operation arm 73 is improved.

操縦ハンドル9及び苗載台11の前側には、主伝動ケース3内の変速部を操作するための変速レバー38と、エンジン2を始動するためのリコイルノブ39とを設けている。尚、機体の前端部にあるエンジン2とリコイルノブ39とは、リコイルロ−プ40により連結されている。また、変速レバー38は、中央ケース部7aの上蓋147に形成した突起部90の遊嵌孔を貫通して主伝動ケース3の変速アームにピンで連結している。   On the front side of the steering handle 9 and the seedling mount 11, a speed change lever 38 for operating a speed change portion in the main transmission case 3 and a recoil knob 39 for starting the engine 2 are provided. The engine 2 and the recoil knob 39 at the front end of the airframe are connected by a recoil rope 40. The transmission lever 38 is connected to the transmission arm of the main transmission case 3 with a pin through a loose fitting hole of the projection 90 formed in the upper lid 147 of the central case portion 7a.

操縦ハンドル9の左右のハンドルグリップ9aの下方には左右各々のサイドクラッチレバー41を設けており、該サイドクラッチレバー41により主伝動ケース3内の左右各々のサイドクラッチを操作する構成となっている。操縦ハンドル9の斜め前下側で後部フレ−ム8の左側には植付深さ調節レバー42を設けており、該植付深さ調節レバー42の操作により該レバー42と一体回動する左右方向の植付深さ調節軸53を回動し、植付深さ調節軸53と一体回動する各々の植付深さ調節アーム54を介して各フロート12の回動支点軸13の機体に対する上下位置を変更して、苗植付装置10による苗の植付深さを変更して調節できる構成となっている。   Left and right side clutch levers 41 are provided below the left and right handle grips 9 a of the steering handle 9, and the left and right side clutches in the main transmission case 3 are operated by the side clutch levers 41. . A planting depth adjustment lever 42 is provided on the left side of the rear frame 8 on the diagonally lower front side of the steering handle 9, and the left and right that rotate integrally with the lever 42 by operating the planting depth adjustment lever 42. The rotating fulcrum shaft 13 of each float 12 with respect to the airframe is rotated via each planting depth adjusting arm 54 that rotates the planting depth adjusting shaft 53 in the direction and rotates together with the planting depth adjusting shaft 53. By changing the vertical position, the planting depth of the seedlings by the seedling planting device 10 can be changed and adjusted.

操縦ハンドル9の斜め前下側で後部フレ−ム8の右側には苗取量調節レバー65を設けており、該苗取量調節レバー65の操作により苗受板27の苗植付装置10に対する上下位置を変更して、苗植付装置10による一株当たりの苗取り量を変更して調節できる構成となっている。   A seedling amount adjustment lever 65 is provided obliquely in front lower side of the steering handle 9 and on the right side of the rear frame 8. By operating the seedling amount adjustment lever 65, the seedling receiving plate 27 is attached to the seedling planting device 10. By changing the vertical position, the amount of seedlings per strain by the seedling planting device 10 can be changed and adjusted.

エンジン2及び主伝動ケース3の上方には、ボンネットカバ−43を設けている。また、エンジン2の上方には、燃料タンク44を設けている。この燃料タンク44の給油栓171と排油栓(図示省略)は、前後中間位置に設けて、機体運搬時に倒立させても燃料が零れないようにしている。尚、図示を省略するが、主伝動ケース3の給油口と排油口も使用時と倒立時にオイルが漏れない位置に設けている。   A bonnet cover 43 is provided above the engine 2 and the main transmission case 3. A fuel tank 44 is provided above the engine 2. An oil filler plug 171 and an oil drain plug (not shown) of the fuel tank 44 are provided at the front and rear intermediate positions so that the fuel does not spill even when the fuel tank 44 is inverted when transported. In addition, although illustration is abbreviate | omitted, the oil supply opening and oil discharge opening of the main transmission case 3 are also provided in the position where oil does not leak at the time of use and inversion.

ボンネットカバ−43の後部の上方から植付伝動ケース7の前部の上方にわたる位置には、予備の苗を載せる予備苗載台45を設けている。この予備苗載台45は、棒材を組み合わせた枠体で構成され、前部フレ−ム6から上方に延びる予備苗載台支持フレ−ム46に支持されている。予備苗載台45の前後左右の四方には立ち上がり部47、48を設けており、該立ち上がり部47、48により搭載した苗が脱落しないようにしている。予備苗載台45は、長手方向約60cm、短手方向約30cmのマット苗を4枚載置できるように、前後幅が約60cmで左右幅が約120crnの広さになっている。   At a position extending from above the rear part of the bonnet cover 43 to above the front part of the planting transmission case 7, a preliminary seedling stage 45 on which spare seedlings are placed is provided. The preliminary seedling stage 45 is composed of a frame that combines rods, and is supported by a preliminary seedling stage support frame 46 that extends upward from the front frame 6. Rising parts 47 and 48 are provided on the front, rear, left and right sides of the preliminary seedling mount 45 so that the seedlings mounted by the rising parts 47 and 48 do not fall off. The preliminary seedling stage 45 has a width of about 60 cm in front and rear and a width of about 120 crn so that four mat seedlings with a length of about 60 cm and a width of about 30 cm can be placed.

従って、予備苗載台45は、長手方向を前後方向に向けたマット苗を左右に4枚配列して載置できる。また、苗運搬を容易にするためにマット苗を巻いた巻苗の状態で苗を取り扱うことがあるが、この巻苗を予備苗載台45に載置することもできる。このとき、前方の立ち上がり部47が他の三方右方、左方、後方の立ち上がり部48より高く設定されており、予備苗載台45に載置した巻苗が転びながら前方に飛び出して脱落しにくいようにしている。   Therefore, the preliminary seedling mounting table 45 can be mounted by arranging four mat seedlings with the longitudinal direction oriented in the front-rear direction. Further, in order to facilitate the seedling transportation, the seedling may be handled in the form of a rolled seedling wound with a mat seedling. However, this rolled seedling can be placed on the preliminary seedling mount 45. At this time, the front rising portion 47 is set higher than the other three right, left, and rear rising portions 48, and the rolled seedlings placed on the preliminary seedling mounting platform 45 fall forward and fall off. It is difficult.

前記予備苗載台支持フレ−ム46は、ボンネットカバ−43と植付伝動ケース7植付部との間に配置されている。前部フレ−ム6で予備苗載台支持フレ−ム46を固定する固定部材49には、ボンネットカバ−43の後部を支持するべく斜め前上方に延びるボンネットカバ−支持部材50を固着している。   The preliminary seedling stage support frame 46 is disposed between the bonnet cover 43 and the planting transmission case 7 planting part. A bonnet cover support member 50 that extends obliquely forward and upward to support the rear part of the bonnet cover 43 is fixed to the fixing member 49 that fixes the preliminary seedling support frame 46 with the front frame 6. Yes.

機体の前部には、機体の前方の障害物からエンジン2、主伝動ケース3及びボンネットカバ−43等を防護する防護フレ−ム51を設けている。この防護フレ−ム51は、主伝動ケース3の左右側面から左右外側に延びる左右各々の取付部51aと、この左右の取付部51aを連結する機体外縁となる防護部51bとを備えている。該防護部51bは、左右中央部分が左右に真直に延びる水平状で最も前側に位置し、左右外側部分が左右外側へいくにつれて後側に位置する構成となっている。   A protective frame 51 that protects the engine 2, the main transmission case 3, the hood cover 43, and the like from obstacles in front of the aircraft is provided at the front of the aircraft. The protective frame 51 includes left and right attachment portions 51a extending from the left and right side surfaces of the main transmission case 3 to the left and right outer sides, and a protection portion 51b serving as an outer edge of the machine body connecting the left and right attachment portions 51a. The protection part 51b has a configuration in which the left and right central part extends in the horizontal direction and is positioned at the most front side, and the left and right outer parts are positioned at the rear side as going to the left and right sides.

また、防護部51bは、左右中央部分が最も上側に位置し、左右外側部分が左右外側へいくにつれて下側に偏位する構成となっている。防護部51bの左右端部には長孔を介してサイドフロート12bの前端を連結し、サイドフロート12bの上下回動範囲を規制している。これにより、サイドフロート12bの支持部材を防護フレ−ム51で兼用することができ、機体の軽量化及びコストダウンが図れる。同様に、センターフロート12aは、その前端が長孔を介して主伝動ケース3に連結され、上下回動範囲が規制されている。   Further, the protection part 51b is configured such that the left and right central part is located on the uppermost side and the left and right outer parts are shifted downward as the left and right outer parts go to the left and right. The front end of the side float 12b is connected to the left and right end portions of the protection portion 51b through a long hole to regulate the vertical rotation range of the side float 12b. As a result, the support member of the side float 12b can be shared by the protective frame 51, and the weight and cost of the aircraft can be reduced. Similarly, the center float 12a has a front end connected to the main transmission case 3 through a long hole, and a vertical rotation range is restricted.

機体をトラックの荷台に積み込んで固定するときには、前記防護部51bの左右中央部分の左右両端に各々ロ−プを掛けると共に、後部フレ−ム8の上部に固着したフック52にロ−プを掛け、機体の3箇所を固定して荷台にしっかりと固定するようになっている。   When loading and fixing the airframe on the truck bed, the rope is hung on both the left and right ends of the left and right center portion of the protective portion 51b, and the rope 52 is hung on the hook 52 fixed to the upper portion of the rear frame 8. The three parts of the fuselage are fixed and firmly fixed to the loading platform.

以上により、この歩行型田植機1において、作業者が操縦ハンドル9の左右のハンドルグリップ9aを把持し、植付昇降レバー37を植付位置に操作して機体を下降させると共に植付部を作動可能な状態にし、主クラッチレバー36を入位置に操作して機体を走行させながら植付部を作動させることにより、圃場に同時に4条分の苗を植え付けていく。圃場の畦際に到達すると、植付昇降レバー37を上昇位置に操作して植付部の作動を停止させると共に機体を上昇させ、走行伝動ケース4を下方へ回動してフロート12を圃場から浮かせた状態にして旋回内側のサイドクラッチレバー41を操作して旋回内側の車輪5のサイドクラッチを断ち、機体を旋回させる。   As described above, in this walking type rice transplanter 1, the operator holds the left and right handle grips 9a of the steering handle 9, operates the planting lift lever 37 to the planting position, lowers the machine body, and operates the planting unit. By putting the main clutch lever 36 into the on position and operating the planting part while operating the machine body, the seedlings for four lines are planted simultaneously in the field. When reaching the edge of the field, the planting lift lever 37 is operated to the raised position to stop the operation of the planting part and the machine body is raised, and the traveling transmission case 4 is rotated downward to remove the float 12 from the field. In a floating state, the side clutch lever 41 on the inner side of the turn is operated to disconnect the side clutch of the wheel 5 on the inner side of the turn, and the body is turned.

この機体旋回時、植付昇降レバー37の上昇位置への操作で機体が上昇作動するが、所望の高さに機体が上昇したときに植付昇降レバー37を中立位置へ操作すれば、その高さで機体を固定することができ、作業者が機体の旋回操作を容易に行える。以下、同様に植付昇降レバー37を植付位置に操作して次行程の植付作業を行い、圃場に苗の植付を行っていく。尚、路上走行時等は、機体を上昇させ、変速レバー38を適宜操作して走行させる。   When the aircraft is turning, the aircraft is lifted by operating the planting lift lever 37 to the raised position. If the planting lift lever 37 is operated to the neutral position when the aircraft is raised to a desired height, the height is increased. Now, the aircraft can be fixed, and the operator can easily turn the aircraft. Hereinafter, similarly, the planting lift lever 37 is operated to the planting position to perform the planting operation in the next step, and planting seedlings in the field. When traveling on the road or the like, the machine body is raised and the shift lever 38 is operated as appropriate.

また、この歩行型田植機1は、機体の前部に配置した主伝動ケース3と、該主伝動ケース3の左右に配置した走行伝動ケース4と、該走行伝動ケース4からの動力で駆動する左右各々の車輪5と、主伝動ケース3からの動力が伝達される植付伝動ケース7と、該植付伝動ケース7からの動力で駆動し苗取口28上の苗を取つて圃場に植え付ける苗植付装置10と、前記苗取口28に一株分ずつ苗を供給する苗載台11とを設けている。   The walking-type rice transplanter 1 is driven by the main transmission case 3 disposed at the front of the machine body, the traveling transmission case 4 disposed on the left and right of the main transmission case 3, and the power from the traveling transmission case 4. Each of the left and right wheels 5, a planting transmission case 7 to which power from the main transmission case 3 is transmitted, and driven by the power from the planting transmission case 7, the seedling on the seedling outlet 28 is taken and planted in the field. A seedling planting apparatus 10 and a seedling mount 11 for supplying seedlings to the seedling inlet 28 one by one are provided.

従って、この歩行型の苗移植機は、主伝動ケース3からの動力が走行伝動ケース4を介して左右の車輪5へ伝達され、該左右の車輪5で走行する。また、主伝動ケース3からの動力が植付伝動ケース7を介して苗植付装置10へ伝達され、該苗植付装置10で圃場に苗を植え付けていく。   Therefore, in this walking type seedling transplanter, the power from the main transmission case 3 is transmitted to the left and right wheels 5 via the traveling transmission case 4 and travels on the left and right wheels 5. Further, the power from the main transmission case 3 is transmitted to the seedling planting device 10 through the planting transmission case 7, and seedlings are planted in the field by the seedling planting device 10.

本発明実施例の歩行型田植機を示す側面図。The side view which shows the walk type rice transplanter of this invention Example. 本発明実施例の歩行型田植機を示す平面図。The top view which shows the walk type rice transplanter of this invention Example. 植付伝動ケースの取付部を示す拡大側面図。The enlarged side view which shows the attaching part of a planting transmission case. 油圧昇降シリンダの取付部を示す拡大側面図。The enlarged side view which shows the attaching part of a hydraulic raising / lowering cylinder. 一部を断面にした中継リンク部材の拡大平面図。The enlarged plan view of the relay link member which made a part the cross section. 中継リンク部材の一部拡大側断面図。The partially expanded side sectional view of a relay link member. 走行伝動ケースの回動基部を示す拡大側面図。The enlarged side view which shows the rotation base part of a driving | running | working transmission case. 別実施例による走行伝動ケースの回動基部を示す拡大側面図。The enlarged side view which shows the rotation base part of the driving | running | working transmission case by another Example. 別実施例による走行伝動ケースの回動基部を示す拡大平面図。The enlarged plan view which shows the rotation base part of the driving | running | working transmission case by another Example. 植付伝動ケースの平断面図。The cross-sectional view of the planting transmission case. 植付伝動ケースの中央ケース部の上蓋を除いた平面図。The top view which removed the upper cover of the center case part of the planting transmission case. 主伝動ケースの一部拡大平断面図。The partially expanded plan sectional view of the main transmission case. 中央ケース部の一部拡大側面図。The partial enlarged side view of a center case part. 中央ケース部の一部拡大側面図。The partial enlarged side view of a center case part. 中央ケース部の一部拡大正断面図。The partial expansion front sectional view of a center case part. 中央ケース部の一部拡大正断面図。The partial expansion front sectional view of a center case part. 植付伝動ケースの拡大側面図。The enlarged side view of a planting transmission case. 揺動クランクの側断面図Side cross-sectional view of swing crank

符号の説明Explanation of symbols

3 主伝動ケース
4 走行伝動ケース
5 車輪
7 植付伝動ケース
10 苗植付装置
11 苗載台
15 縦植付伝動軸
28 苗取口
95,96 ベベルギヤ
97 横植付伝動軸
98 植付駆動軸
99 延長植付駆動軸
100,101 ベベルギヤ
102 開口部
DESCRIPTION OF SYMBOLS 3 Main transmission case 4 Traveling transmission case 5 Wheel 7 Planting transmission case 10 Seedling planting device 11 Seedling stand 15 Vertical planting transmission shaft 28 Seedling port 95, 96 Bevel gear 97 Horizontal planting transmission shaft 98 Planting drive shaft 99 Extension planting drive shaft 100, 101 Bevel gear 102 Opening

Claims (2)

機体の前部に配置した主伝動ケース3と、該主伝動ケース3の左右に配置した走行伝動ケース4と、該走行伝動ケース4からの動力で駆動する左右各々の車輪5と、主伝動ケース3から前後方向の縦植付伝動軸15を介して動力が伝達される植付伝動ケース7内で一対のベベルギヤ95,96を介して左右方向の横植付伝動軸97に伝動され、該横植付伝動軸97からの動力で駆動し苗取口28上の苗を取って圃場に植え付ける苗植付装置10と、前記苗取口28に一株分ずつ苗を供給する苗載台11とを設け、前記主伝動ケース3内の植付駆動軸98端部に延長植付駆動軸99を着脱可能に取り付け、この延長植付駆動軸99から前記縦植付伝動軸15へ伝動する一対のベベルギヤ100,101を設け、延長植付駆動軸99とベベルギヤ100,101を取出し可能な開口部102を主伝動ケース3に形成した歩行型の苗移植機。 A main transmission case 3 disposed at the front of the machine body, a traveling transmission case 4 disposed on the left and right of the main transmission case 3, left and right wheels 5 driven by power from the traveling transmission case 4, and a main transmission case 3 is transmitted to the horizontal planting transmission shaft 97 in the left-right direction through a pair of bevel gears 95 and 96 in the planting transmission case 7 to which power is transmitted through the vertical planting transmission shaft 15 in the front-rear direction. A seedling planting apparatus 10 that is driven by the power from the planting transmission shaft 97 to take seedlings on the seedling inlet 28 and plant the seedlings on the field, and a seedling platform 11 that supplies seedlings to the seedling inlet 28 one by one. And an extended planting drive shaft 99 is detachably attached to the end of the planting drive shaft 98 in the main transmission case 3, and a pair of gears are transmitted from the extended planting drive shaft 99 to the vertical planting transmission shaft 15. Provided with bevel gears 100, 101, extended planting drive shaft 99 and bevel gear Walk-seedling transplanter of the opening 102 formed in the main transmission case 3 which can take out the 00,101. 延長植付駆動軸99から前記縦植付伝動軸15へ伝動する一対のベベルギヤ100,101の歯数を異ならせると共に交換して取り付け可能にした構成したことを特徴とする請求項1に記載の歩行型の苗移植機。 2. The structure according to claim 1, wherein the number of teeth of the pair of bevel gears 100 and 101 transmitted from the extended planting drive shaft 99 to the vertical planting transmission shaft 15 is made different and exchangeable. A walking seedling transplanter.
JP2007299495A 2007-11-19 2007-11-19 Ambulatory seedling transplanter Pending JP2009118830A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007299495A JP2009118830A (en) 2007-11-19 2007-11-19 Ambulatory seedling transplanter
CN2008101777534A CN101438649B (en) 2007-11-19 2008-11-18 Walking Seedling Transplanter
KR1020080115074A KR101028518B1 (en) 2007-11-19 2008-11-19 Walk-in Parent Transplanter

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Application Number Priority Date Filing Date Title
JP2007299495A JP2009118830A (en) 2007-11-19 2007-11-19 Ambulatory seedling transplanter

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KR (1) KR101028518B1 (en)
CN (1) CN101438649B (en)

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CN102884930B (en) * 2012-10-08 2017-08-15 刘绍春 Corn seedling raising and transplanting method and its supporting machinery transplanter
CN103089954B (en) * 2013-02-20 2015-07-08 浙江大学 High speed transplanting transplanter for vegetable pot seedlings
JP6395454B2 (en) * 2014-06-09 2018-09-26 株式会社クボタ Seedling planting equipment

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KR830000938B1 (en) * 1977-09-24 1983-05-11 히고 이찌로오 Lighting system of discharge lamp
KR800001471B1 (en) * 1979-03-24 1980-12-17 함종춘 Rice transplanter
JPS60163330A (en) * 1984-02-01 1985-08-26 Hitachi Ltd Electron tube cathode structure

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KR101028518B1 (en) 2011-04-11
CN101438649B (en) 2011-06-01
CN101438649A (en) 2009-05-27

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