JP2009118786A - Seedling planting device - Google Patents

Seedling planting device Download PDF

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Publication number
JP2009118786A
JP2009118786A JP2007296795A JP2007296795A JP2009118786A JP 2009118786 A JP2009118786 A JP 2009118786A JP 2007296795 A JP2007296795 A JP 2007296795A JP 2007296795 A JP2007296795 A JP 2007296795A JP 2009118786 A JP2009118786 A JP 2009118786A
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seedling
seedling planting
planting
lubricating oil
planting device
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JP4946817B2 (en
JP2009118786A5 (en
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Susumu Fukui
享 福井
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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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Priority to JP2007296795A priority Critical patent/JP4946817B2/en
Priority to KR1020080108047A priority patent/KR101056170B1/en
Priority to CN2008101763103A priority patent/CN101433141B/en
Publication of JP2009118786A publication Critical patent/JP2009118786A/en
Publication of JP2009118786A5 publication Critical patent/JP2009118786A5/ja
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/02—Transplanting machines for seedlings
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B63/00—Lifting or adjusting devices or arrangements for agricultural machines or implements
    • A01B63/02—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors
    • A01B63/10—Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01C—PLANTING; SOWING; FERTILISING
    • A01C11/00—Transplanting machines
    • A01C11/006—Other parts or details or planting machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2200/00—Type of vehicle
    • B60Y2200/20—Off-Road Vehicles
    • B60Y2200/22—Agricultural vehicles
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies 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

<P>PROBLEM TO BE SOLVED: To solve the problem that in conventional seedling planting devices that include a seedling planting device case, having a lubricating oil in an inside the main space part, a shaft part in which a seedling pushing device is slid relative to a bearing member in the seedling planting device case by a pushing operation and a seedling pushing part fixed on the end of the shaft part on the outside of the seedling planting device case and equipped with an oil seal brought into contact with the outer peripheral surface of the shaft part on the lower side of the bearing member; lubricating oil is successively transmitted to a gap between the shaft part and the bearing member by the slide of the shaft part, the lubricating oil received by the oil seal has no place to go, there is a risk that the lubricating oil passes between the oil seal and the shaft part and leaks out to the outside of the seedling planting device case; the leakage of the lubricating oil to the outside contaminates the field to be planted with seedlings; and deficiency of the lubricating oil in the seedling planting device case reduces the durability of the seedling planting device. <P>SOLUTION: The seedling planting device includes a hollow part (54) between the oil seal (52) and the bearing member (51), and a communication groove (55) from the hollow part (54) to a main space part (A). <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、苗移植機等の苗植付装置に使用する苗植付具の技術分野に属する。   The present invention belongs to the technical field of a seedling planting tool used in a seedling planting apparatus such as a seedling transplanter.

苗載台上のマット状の苗から一株分の苗を掻き取る植付爪と、該植付爪が掻き取った苗を押し出す苗押出具と、内部の主空間部に潤滑油を有する苗植付具ケ−スを備えた苗植付具において、苗押出具は、押出作動により苗植付具ケ−ス内の軸受部材に対して摺動する軸部と、苗植付具ケ−スの外部で該軸部の先端に固着された苗押出部を備え、軸受部材の下側には軸部の外周面に接触するオイルシールを設けたものがある（特許文献１及び２参照。）。
特開平６−２０９６２３号公報 特開平８−２３７３６号公報 A planting claw for scraping one seedling from a mat-like seedling on a seedling table, a seedling pusher for pushing out the seedling scraped off by the planting claw, and a seedling having lubricating oil in an internal main space portion In the seedling planting tool provided with the planting tool case, the seedling pushing tool includes a shaft portion that slides against a bearing member in the seedling planting tool case by an extrusion operation, and a seedling planting tool case. A seedling extruding portion fixed to the tip of the shaft portion outside the shaft is provided, and an oil seal that contacts the outer peripheral surface of the shaft portion is provided below the bearing member (see Patent Documents 1 and 2). ).
JP-A-6-209623 JP-A-8-23736

上記背景技術の構成は、苗押出具の軸部が軸受部材に対して摺動すると、苗植付具ケ−スの主空間部内の潤滑油が軸部と軸受部材の間の隙間をつたってくるが、オイルシールによりこの潤滑油が苗植付具ケ−スの外部に洩れ出ないようにしている。   When the shaft portion of the seedling pusher slides relative to the bearing member, the lubricating oil in the main space of the seedling planting case bridges the gap between the shaft portion and the bearing member. However, the oil seal prevents the lubricating oil from leaking out of the seedling planting case.

しかしながら、潤滑油が軸部の摺動で前記隙間を逐次つたってくるため、オイルシールで受け止められている潤滑油の行き場がなくなって、この潤滑油がオイルシールと軸部の間を通って苗植付具ケースの外部に洩れ出るおそれがあり、潤滑油が外部に洩れ出ることにより、苗を植え付ける圃場を汚染したり、苗植付具ケース内の潤滑油が不足して苗植付具の耐久性が低下するおそれがある。   However, since the lubricating oil successively passes through the gap due to the sliding of the shaft portion, there is no place for the lubricating oil received by the oil seal, and this lubricating oil passes through between the oil seal and the shaft portion. There is a risk of leakage to the outside of the planting tool case, and if the lubricating oil leaks to the outside, the field where the seedlings are planted will be contaminated, or there will be insufficient lubricating oil in the seedling planting case and Durability may be reduced.

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、苗載置台（２０）上のマット状の苗から一株分の苗を掻き取る植付爪（４０）と、該植付爪（４０）が掻き取った苗を押し出す苗押出具（４１）と、内部の主空間部（Ａ）に潤滑油を有する苗植付具ケ−ス（３２ａ）を備えた苗植付具において、苗押出具（４１）は、押出作動により苗植付具ケ−ス（３２ａ）内の軸受部材（５１）に対して摺動する軸部（４１ａ）と、苗植付具ケ−ス（３２ａ）の外部で該軸部（４１ａ）の先端に固着された苗押出部（４１ｂ）を備え、軸受部材（５１）の下側には軸部（４１ａ）の外周面に接触するオイルシール（５２）を設け、該オイルシール（５２）から前記主空間部（Ａ）にわたる連通溝（５５）を設けた苗植付具とした。 In order to solve the above problems, the present invention has taken the following technical means.
That is, in the invention according to claim 1, the planting claw (40) for scraping off one stock of seedlings from the mat-like seedling on the seedling mounting table (20), and the planting claw (40) scraped off. A seedling extruding tool (41) for extruding a seedling and a seedling transplanting tool provided with a seedling transplanting tool case (32a) having lubricating oil in the internal main space (A), the seedling extruding tool (41) is The shaft portion (41a) sliding with respect to the bearing member (51) in the seedling planting tool case (32a) by the pushing operation, and the shaft portion outside the seedling planting tool case (32a). An oil seal (52) that is in contact with the outer peripheral surface of the shaft portion (41a) is provided on the lower side of the bearing member (51). A seedling planting tool provided with a communication groove (55) extending from (52) to the main space (A) was obtained.

従って、この苗植付具は、植付爪（４０）が苗載置台（２０）上のマット状の苗から一株分の苗を掻き取り、その苗を苗押出具（４１）の苗押出部（４１ｂ）で圃場へ向けて押し出すことにより、圃場に苗を植え付ける。苗押出具（４１）の押出作動で軸部（４１ａ）が軸受部材（５１）に対して摺動することにより、苗植付具ケ−ス（３２ａ）の主空間部（Ａ）内の潤滑油が軸部（４１ａ）と軸受部材（５１）の間の隙間をつたってくるが、オイルシール（５２）によりこの潤滑油を受け止める。潤滑油が軸部（４１ａ）の摺動で前記隙間を逐次つたってオイルシール（５２）に供給されても、連通溝（５５）によりオイルシール（５２）で受け止めた潤滑油を前記主空間部（Ａ）に戻してオイルシール（５２）付近の圧力の上昇を防止し、オイルシール（５２）を介して潤滑油が外部に洩れ出るのを防止する。   Therefore, in this seedling planting tool, the planting claw (40) scrapes one seedling from the mat-like seedling on the seedling mounting table (20), and the seedling is extruded from the seedling pushing tool (41). A seedling is planted in the field by pushing out toward the field with the part (41b). Lubrication in the main space (A) of the seedling planting case (32a) by sliding the shaft (41a) with respect to the bearing member (51) by the pushing operation of the seedling pushing tool (41). Oil fills the gap between the shaft portion (41a) and the bearing member (51), and this oil is received by the oil seal (52). Even if the lubricating oil is supplied to the oil seal (52) by sequentially sliding the gap by sliding of the shaft portion (41a), the lubricating oil received by the oil seal (52) by the communication groove (55) is supplied to the main space portion. Returning to (A), the pressure in the vicinity of the oil seal (52) is prevented from increasing, and the lubricating oil is prevented from leaking outside through the oil seal (52).

よって、潤滑油が苗植付具ケ−ス（３２ａ）の外部に洩れ出るのを防止し、潤滑油で苗を植え付ける圃場を汚染したり、苗植付具ケース（３２ａ）内の潤滑油が不足して苗植付具（３２）の耐久性が低下したりするようなことを防止できる。   Therefore, the lubricating oil is prevented from leaking to the outside of the seedling planting case (32a), the field where the seedling is planted with the lubricating oil, or the lubricating oil in the seedling planting case (32a) It can be prevented that the durability of the seedling planting tool (32) is lowered due to shortage.

この発明の実施の一形態を、以下に説明する。
図１は、乗用型の田植機１を示すものであり、この乗用型の田植機１は、走行車体２と６条植えの苗植付部３とから構成される。 One embodiment of the present invention will be described below.
FIG. 1 shows a riding type rice transplanter 1, which is composed of a traveling vehicle body 2 and a 6-row seedling planting part 3.

走行車体２の略中央に駆動源であるエンジン４が備えられ、該エンジン４の駆動により走行ミッションケ−ス５等を介して前輪６，６及び後輪７，７が駆動され、これらの前後輪６，６，７，７が駆動されて走行車体２が走行する。前記エンジン４の上方に操縦席８が備えられ、該操縦席８の前側にステアリングハンドル９が設けられている。この走行車体２の後部に昇降リンク機構１０が設けられ、該昇降リンク機構１０を介して前記苗植付部３が装着され、油圧昇降シリンダ１１の伸縮により上下に昇降するように設けられている。尚、走行車体側からの動力が植付クラッチケ−ス１２を介して前記苗植付部３に伝動されるようになっている。   An engine 4 as a drive source is provided at the approximate center of the traveling vehicle body 2, and the front wheels 6, 6 and the rear wheels 7, 7 are driven by the driving of the engine 4 through the traveling mission case 5. The traveling vehicle body 2 travels by driving the wheels 6, 6, 7, 7. A cockpit 8 is provided above the engine 4, and a steering handle 9 is provided on the front side of the cockpit 8. An elevating link mechanism 10 is provided at the rear part of the traveling vehicle body 2, and the seedling planting part 3 is mounted via the elevating link mechanism 10, and is provided so as to be moved up and down by expansion and contraction of the hydraulic elevating cylinder 11. . The power from the traveling vehicle body side is transmitted to the seedling planting portion 3 through the planting clutch case 12.

また、操縦席前側のステップ部には有段操作される株間変速レバ−１３が設けられており、走行車体２の走行速度に対する苗植付部３の作動速度を変速できるようになっている。この株間変速レバ−１３により、植付作業者が圃場に移植する苗の植付株間を設定できるようになっている。従って、前記株間変速レバ−１３を操作しない限り、走行速度に比例した速度で前記苗植付部３が作動されるようになっている。   Further, an inter-stock shift lever 13 that is operated stepwise is provided at the step portion in front of the cockpit, so that the operating speed of the seedling planting section 3 with respect to the traveling speed of the traveling vehicle body 2 can be changed. With this inter-strain shift lever 13, the planting operator can set the planting strains of seedlings to be transplanted in the field. Therefore, unless the inter-strain shift lever 13 is operated, the seedling planting unit 3 is operated at a speed proportional to the traveling speed.

苗植付部３は、苗載置台２０と植付伝動部２１及び各条の苗植付装置２２，…とを備えて構成される。苗植付部３の下部には、センタ−フロ−ト２３及び両側部にサイドフロ−ト２４，２４が設けられており、該フロ−ト２３，２４，２４が圃場面を滑走する構成である。   The seedling planting unit 3 includes a seedling mounting table 20, a planting transmission unit 21, and seedling planting devices 22 for each strip. At the lower part of the seedling planting part 3, a center float 23 and side floats 24, 24 are provided on both sides, and the floats 23, 24, 24 are configured to slide in a field scene. .

また、苗植付部３は、植付伝動部２１からの動力により前記苗植付装置２２を作動する。前記苗載置台２０は、上部を苗載置台支持ロ−ラ２５，２５、下部を左右移動ガイド板２６により左右移動可能に支持されている。従って、苗植付部３は、苗載置台２０が固着された苗載置台左右移動棒２７を左右移動させて苗載置台２０を左右移動させ、マット状の苗を苗植付装置２２により一株づつ掻き取る構成となっている。尚、前記左右移動ガイド板２６には、苗植付装置２２，…の苗掻き取り口２６ａ，…が設けられている。また、前記苗載置台２０は、左右移動終端においてマット状の苗を各条の苗送りベルト２８，…により苗載置台２０に沿って苗植付装置側に順次移送する公知の構成である。   In addition, the seedling planting unit 3 operates the seedling planting device 22 by the power from the planting transmission unit 21. The seedling mounting table 20 is supported by a seedling mounting table support rollers 25 and 25 at the upper part and a left and right movement guide plate 26 at the lower part so as to be movable left and right. Accordingly, the seedling planting unit 3 moves the seedling placement table left / right moving rod 27 to which the seedling placement table 20 is fixed to the left and right to move the seedling placement table 20 left and right. It is configured to scrape stocks one by one. The left and right moving guide plate 26 is provided with seedling scraping openings 26a of the seedling planting devices 22,. The seedling mounting table 20 has a known configuration in which mat-shaped seedlings are sequentially transferred to the seedling planting device side along the seedling mounting table 20 by the seedling feeding belts 28,.

図１、図２に示すように、苗植付装置２２は、植付伝動部２１の植付伝動フレ−ム２９の端部から出力され機体の走行速度に比例した速度で回動する苗植付装置駆動軸３０の駆動により回転駆動する回転ケ−ス３１と該回転ケ−ス３１の両端部にそれぞれ装着された苗植付具３２，３２とを備えて構成され、該苗植付具３２，３２が前記苗掻き取り口２６ａ上の苗を掻き取り、掻き取った苗を圃場に植え付けていくようになっている。すなわち、前記回転ケ−ス３１が該苗植付装置駆動軸３０と一体回転するように取り付けられると共に、回転ケ−ス３１内の太陽ギヤ３３が前記植付伝動フレ−ム２９に対して回転しないように設けられ、回転ケ−ス３１の回動により該太陽ギヤ３３と噛み合う中間ギヤ３４，３４を前記太陽ギヤ３３回りに回動させ、前記中間ギヤ３４，３４の駆動により該中間ギヤ３４，３４と噛み合う最終ギヤ３５，３５を回動させ、該最終ギヤ３５，３５と一体回転する最終ギヤ回動軸３６，３６により前記苗植付具３２，３２を一体回転させ、前記回転ケ−ス３１の回動位置に対して前記苗植付具３２，３２の前後傾斜姿勢が決定される。尚、前記苗植付具３２が最終ギヤ３５と一体回転するようになっている。また、前記中間ギヤ３４，３４及び前記最終ギヤ３５，３５は、前記太陽ギヤ３３に対して対称位置に設けられてそれぞれの苗植付具３２，３２の前後傾斜姿勢を決定するようになっている。   As shown in FIGS. 1 and 2, the seedling planting device 22 is a seedling planting plant that is output from an end of a planting transmission frame 29 of the planting transmission unit 21 and rotates at a speed proportional to the traveling speed of the machine body. A rotating case 31 that is rotated by driving of the attaching device drive shaft 30; and seedling planting tools 32 and 32 that are respectively attached to both ends of the rotating case 31. 32 and 32 scrape off the seedlings on the seedling scraping opening 26a, and plant the scraped seedlings in the field. That is, the rotary case 31 is attached so as to rotate integrally with the seedling planting device drive shaft 30 and the sun gear 33 in the rotary case 31 rotates with respect to the planting transmission frame 29. The intermediate gears 34 and 34 that are provided so as not to be engaged and mesh with the sun gear 33 by the rotation of the rotary case 31 are rotated about the sun gear 33, and the intermediate gear 34 is driven by the driving of the intermediate gears 34 and 34. , 34 is rotated, and the seedling planting tools 32, 32 are integrally rotated by the final gear rotating shafts 36, 36 that rotate integrally with the final gears 35, 35, thereby rotating the rotation cage. The forward and backward inclined postures of the seedling planting tools 32, 32 are determined with respect to the rotational position of the support 31. Note that the seedling planting tool 32 rotates integrally with the final gear 35. In addition, the intermediate gears 34 and 34 and the final gears 35 and 35 are provided at symmetrical positions with respect to the sun gear 33 so as to determine the front and rear inclined postures of the respective seedling planting tools 32 and 32. Yes.

また、前記太陽ギヤ３３と前記中間ギヤ３４，３４と前記最終ギヤ３５，３５とは非円形の偏心ギヤであると共にそれぞれ同歯数であり、回転ケ−ス３１の一回転につき前記中間ギヤ３４，３４及び前記最終ギヤ３５，３５が回動角速度を変えながらそれぞれ一回転する。従って、回転ケ−ス３１が一回転する間に、苗植付具３２，３２が回転ケ−ス３１の回動とは逆方向に該回転ケ−ス３１に対して一回転するようになっている。   The sun gear 33, the intermediate gears 34 and 34, and the final gears 35 and 35 are non-circular eccentric gears and have the same number of teeth, respectively, and the intermediate gear 34 per rotation of the rotary case 31. , 34 and the final gears 35, 35 rotate one time while changing the rotational angular velocity. Therefore, while the rotary case 31 makes one rotation, the seedling planting tools 32 and 32 rotate once with respect to the rotary case 31 in the direction opposite to the rotation of the rotary case 31. ing.

前記苗植付具３２は、マット状の苗を一株分掻き取って保持する植付爪４０と該植付爪４０で分離して保持した苗を圃場面へ向けて押し出す苗押出具の一例である苗押出フォ−ク４１とを備えて構成される。前記回転ケ−ス３１の回動により苗植付具３２がル−プ軌跡を描いて前記苗掻き取り口２６ａを通過することにより、前記植付爪４０が苗掻き取り口２６ａにある苗を掻き取り保持し、保持した苗を苗押出フォーク４１が圃場面に向かって押し出して圃場に苗を植え付けるようになっている。苗押出フォ−ク４１は、基部が苗植付具３２の苗植付具ケース３２ａ内に挿入され、苗植付具ケース３２ａの主空間部Ａ内で苗の押出作用側に苗押出スプリング４２により付勢されると共に、苗植付具３２に対して回動する苗押出カム４３の回動により揺動軸４４ａ回りに揺動する苗押出ア−ム４４を揺動させ該ア−ム４４先端に連繋して、苗植付具ケ−ス３２ａに対して摺動して押出作動するようになっている。尚、苗押出フォ−ク４１と苗押出ア−ム４４との連繋部となる苗押出フォ−ク４１の上端部５０は、苗押出アーム４４に連繋させるために、後述する丸軸部４１ａより外径が大きくなっている。また、前記苗押出スプリング４２は、苗押出フォ−ク４１の上端部５０に接触して作用する。尚、前記苗押出カム４３は回転ケ−ス３１に対して回動しないように設けられ、回転ケ−ス３１の一回転につき苗押出カム４４が苗植付具３２に対して一回転する構成となっている。   The seedling planting tool 32 is an example of a planting claw 40 that scrapes and holds a mat-like seedling for one stock, and a seedling pushing tool that extrudes the seedling separated and held by the planting claw 40 toward a field scene. And a seedling extrusion fork 41. By the rotation of the rotary case 31, the seedling planting tool 32 draws a loop trajectory and passes through the seedling scraping opening 26a, so that the planting claw 40 scrapes off the seedling in the seedling scraping opening 26a. The seedling extruding fork 41 pushes the held seedling toward the field scene to plant the seedling in the field. The seedling pushing fork 41 has a base inserted into a seedling planting tool case 32a of the seedling planting tool 32, and a seedling pushing spring 42 on the seedling pushing side in the main space A of the seedling planting tool case 32a. The seedling push-out arm 44 swinging about the swinging shaft 44 a is swung by the turning of the seedling push-out cam 43 that is turned with respect to the seedling planting tool 32, and the arm 44 is swung. Linked to the tip, the seedling planting tool case 32a is slid and pushed out. The upper end portion 50 of the seedling extrusion fork 41, which is a connecting portion between the seedling extrusion fork 41 and the seedling extrusion arm 44, is connected to a seedling extrusion arm 44 from a round shaft portion 41a described later. The outer diameter is large. The seedling pushing spring 42 acts by contacting the upper end portion 50 of the seedling pushing fork 41. The seedling pushing cam 43 is provided so as not to rotate with respect to the rotating case 31, and the seedling pushing cam 44 rotates once with respect to the seedling planting tool 32 for each rotation of the rotating case 31. It has become.

前記植付爪４０は、前壁部４０ａを備えて構成される。また、前記植付爪４０の前壁部４０ａには基部側にボルト孔４０ｂが設けられ、前記植付爪４０は前記ボルト孔４０ｂを通す締着ボルト４５により前記苗植付具ケ−ス３２ａに取り付けられるようになっている。前記植付爪４０の先端部には、前記前壁部４０ａの左右両端部から後方へ突出して設けられた左右の側壁部４０ｃ，４０ｃが設けられている。また、前記前壁部４０ａの左右中央には、植付爪４０の先端部から基部側に向かって切欠き部４０ｄが設けられている。尚、前記切欠き部４０ｄは、前記左右の側壁部４０ｃ，４０ｃより植付爪４０の基部側にまで延設されると共に、植付爪４０の先端において前記前壁部４０ａの左右幅と略同一に構成され、植付爪４０の先端から基部側に向かうに従って左右幅が縮小され、所定の位置から基部側は一定の左右幅となっている。また、植付爪４０の前記先端部における前記前壁部４０ａの後側は、平面に構成されている。従って、植付爪４０の前記先端部において、横断面が左右一対のＬ字型で構成される苗保持部となっている。尚、前記切欠き部４０ｄの側面４０ｅは、曲面形状となっている。また、前記前壁部４０ａの後面において、前記左右の側壁部４０ｃ，４０ｃの植付爪４０の基部側の端部４０ｆ，４０ｆの位置から植付爪４０の基部側にかけて左右にそれぞれ後側に突出した曲面形状部分４０ｇ，４０ｇが設けられている。   The planting claw 40 includes a front wall portion 40a. The front wall 40a of the planting claw 40 is provided with a bolt hole 40b on the base side, and the planting claw 40 is connected to the seedling planting case 32a by a fastening bolt 45 passing through the bolt hole 40b. Can be attached to. Left and right side wall portions 40c, 40c are provided at the front end portion of the planting claw 40 so as to protrude rearward from the left and right end portions of the front wall portion 40a. Further, a notch 40d is provided from the front end of the planting claw 40 toward the base at the center of the front wall 40a. The notch portion 40d extends from the left and right side wall portions 40c, 40c to the base side of the planting claw 40, and is substantially the same as the lateral width of the front wall portion 40a at the tip of the planting claw 40. The left and right widths are configured to be the same, and the left and right widths are reduced from the tip of the planting claw 40 toward the base side, and the base side has a constant left and right width from a predetermined position. Moreover, the rear side of the front wall portion 40a at the tip end portion of the planting claw 40 is configured as a flat surface. Therefore, in the said front-end | tip part of the planting nail | claw 40, the cross section becomes the seedling holding part comprised by a left-right paired L shape. The side surface 40e of the notch 40d has a curved surface shape. Further, on the rear surface of the front wall portion 40a, the left and right side wall portions 40c, 40c are respectively rearward left and right from the position of the end portions 40f, 40f of the planting claw 40 to the base side of the planting claw 40. Projected curved surface portions 40g, 40g are provided.

前記苗押出フォ−ク４１は、押出作動により前記苗植付具ケ−ス３２ａに対して摺動する軸部となる丸軸部４１ａと該丸軸部４１ａの先端に固着された苗押出部４１ｂとを備えて構成される。尚、苗植付具ケ−ス３２ａ内において、前記丸軸部４１ａが苗植付具ケ−ス３２ａに内装される筒状の軸受部材となるブッシュ５１に摺動可能に支持され、丸軸部４１ａの外周面がブッシュ５１の内周面に接触している。前記苗押出部４１ｂには苗押出基部４１ｃと左右の苗押出プレ−ト４１ｄ，４１ｄとが設けられ、該苗押出プレ−ト４１ｄ，４１ｄの前端部が植付爪４０が保持した苗の苗床に当接して植付爪４０が保持した苗を押し出すようになっている。左右の前記苗押出プレ−ト４１ｄ，４１ｄは、植付爪４０の側壁部４０ｃ，４０ｃより左右内側の該側壁部４０ｃ，４０ｃの近傍に設けられ、該プレ−ト４１ｄ，４１ｄの前部が側面視で植付爪４０の前記側壁部４０ｃ，４０ｃと重複するように設けられている。また、図４に示すように、前記苗押出フォ−ク４１の押出作動における戻り作動端に位置する状態で、前記苗押出プレ−ト４１ｄ，４１ｄが、植付爪４０の側壁部４０ｃ，４０ｃの植付爪４０の基部側の端部４０ｆ，４０ｆから該苗押出プレ−ト４１ｄ，４１ｄの植付爪４０における基部側の端部である一部のみが突出するようになっている。尚、前記苗押出プレ−ト４１ｄ，４１ｄは、該プレ−ト４１ｄ，４１ｄの前部が前記苗押出フォ−ク４１が押出作動における押出作動端に位置する状態で植付爪４０の側壁部４０ｃ，４０ｃと側面視で重複するように設けられている。また、苗押出部４１ｂの前記苗押出基部４１ｃの前面４１ｅは、前記苗押出プレ−ト４１ｄ，４１ｄの端部から植付爪４０の基部側にかけて前方に突出した曲面形状となっている。   The seedling extruding fork 41 includes a round shaft portion 41a serving as a shaft portion that slides with respect to the seedling planting tool case 32a by an extrusion operation, and a seedling extruding portion fixed to the tip of the round shaft portion 41a. 41b. In the seedling planting case 32a, the round shaft portion 41a is slidably supported by a bush 51 serving as a cylindrical bearing member provided in the seedling planting case 32a. The outer peripheral surface of the portion 41 a is in contact with the inner peripheral surface of the bush 51. The seedling pushing part 41b is provided with a seedling pushing base part 41c and left and right seedling pushing plates 41d, 41d. The seedlings held by the planting claws 40 are pushed out in contact with each other. The left and right seedling extrusion plates 41d and 41d are provided in the vicinity of the side wall portions 40c and 40c on the left and right inner sides of the side wall portions 40c and 40c of the planting claw 40, and the front portions of the plates 41d and 41d are provided. It is provided so as to overlap with the side wall portions 40c, 40c of the planting claw 40 in a side view. As shown in FIG. 4, the seedling extrusion plates 41 d and 41 d are positioned at the return operation end in the extrusion operation of the seedling extrusion fork 41 so that the side wall portions 40 c and 40 c of the planting claws 40 are located. Only a part of the base side end of the seedling extruding plate 41d, 41d is projected from the base side end 40f, 40f of the planting claw 40. The seedling extruding plates 41d and 41d are side walls of the planting claws 40 with the front portions of the plates 41d and 41d positioned at the extruding operation end of the seedling extruding fork 41. 40c and 40c are provided so as to overlap in side view. Further, the front surface 41e of the seedling extrusion base portion 41c of the seedling extrusion portion 41b has a curved shape protruding forward from the end portions of the seedling extrusion plates 41d and 41d to the base side of the planting claws 40.

ブッシュ５１の下側には丸軸部４１ａの外周面に接触するオイルシール５２を設け、該オイルシール５２により苗押出フォ−ク４１の作動で苗植付具ケ−ス３２ａ内の主空間部Ａ内に収容した潤滑油（液状のオイル又はグリス）が外部に洩れないようにしている。ブッシュ５１の上側には、丸軸部４１ａの外周面で摺動自在なクッションゴム５３を設けている。オイルシール５２とブッシュ５１の間には空洞部５４を設け、丸軸部４１ａの摺動並びに苗押出フォ−ク４１の上端部５０の往復移動で該丸軸部４１ａとブッシュ５１との間の隙間をつたってくる潤滑油が空洞部５４に供給されるようになっている。該空洞部５４の外径は、ブッシュ５１の外径より大きくなっている。ブッシュ５１の前側１箇所には、ブッシュ５１の下端部から上側の苗植付具ケ−ス３２ａ内の主空間部Ａにわたる連通溝５５を、ブッシュ５１の外面に沿って苗植付具ケ−ス３２ａに形成している。この連通溝５５により、丸軸部４１ａの摺動で空洞部５４に潤滑油が供給されても、空洞部５４内の圧力が上昇せずに空洞部５４内の潤滑油を苗植付具ケ−ス３２ａ内の空間に戻す作用が生じ、空洞部５４内からオイルシール５２を介して潤滑油が外部に洩れ出るのを防止している。   An oil seal 52 that contacts the outer peripheral surface of the round shaft portion 41a is provided below the bush 51, and the main space portion in the seedling planting case 32a is operated by the operation of the seedling pushing fork 41 by the oil seal 52. The lubricating oil (liquid oil or grease) contained in A is prevented from leaking outside. On the upper side of the bush 51, a cushion rubber 53 that is slidable on the outer peripheral surface of the round shaft portion 41a is provided. A cavity portion 54 is provided between the oil seal 52 and the bush 51, and the sliding between the round shaft portion 41 a and the reciprocating movement of the upper end portion 50 of the seedling extrusion fork 41 allow the space between the round shaft portion 41 a and the bush 51. Lubricating oil passing through the gap is supplied to the cavity 54. The outer diameter of the hollow portion 54 is larger than the outer diameter of the bush 51. A communication groove 55 extending from the lower end of the bush 51 to the main space A in the upper seedling planting case 32 a is provided at one front side of the bush 51 along the outer surface of the bush 51. 32a. Even if lubricating oil is supplied to the cavity portion 54 by sliding of the round shaft portion 41a, the communication groove 55 allows the lubricant oil in the cavity portion 54 to be transferred to the seedling planting tool without increasing the pressure in the cavity portion 54. -An action of returning to the space in the sleeve 32a occurs, and the lubricating oil is prevented from leaking from the inside of the cavity 54 via the oil seal 52.

以上により、この苗植付装置２２は、回転ケ−ス３１の回転により、上下方向のル−プ軌跡で旋回し植付爪４０により苗載置台２０の下部の苗掻き取り口２６ａから一株分の苗を掻き取ってその掻き取った苗を圃場面に移送し、苗押出フォ−ク４１が押出作動により圃場に苗を植え付ける。一株分の苗を掻き取るとき、苗床から上方に延びる苗の葉が植付爪４０の切欠き部４０ｄに入ると共に植付爪４０の先端部の前壁部４０ａと左右の側壁部４０ｃ，４０ｃとにより苗植付装置２２の苗植付具３２に一株分の苗床が保持され、圃場面に移送する苗の苗床が分離しないように確実に苗床を保持する。また、苗植付具３２に保持された苗は、前記左右の側壁部４０ｃ，４０ｃの左右内側近傍にある苗押出フォ−ク４１の苗押出プレ−ト４１ｄ，４１ｄの押出作動により確実に圃場に植え付けられる。   As described above, the seedling planting apparatus 22 is rotated by the rotation of the rotary case 31 and swung along the loop trajectory in the vertical direction, and the planting claw 40 is used for one stock from the seedling scraping opening 26a below the seedling mounting table 20. The seedlings are scraped off and transferred to the field scene, and the seedling extrusion fork 41 plants the seedlings in the field by the extrusion operation. When scraping off a single seedling, the leaves of the seedling extending upward from the seedbed enter the notch 40d of the planting claw 40 and the front wall 40a at the tip of the planting claw 40 and the left and right side walls 40c, The seedbed for one strain is held by the seedling planting tool 32 of the seedling planting device 22 by 40c, and the seedbed is securely held so that the seedbeds of the seedlings transferred to the farm scene are not separated. In addition, the seedlings held by the seedling planting tool 32 are reliably brought into the field by the pushing operation of the seedling pushing plates 41d and 41d of the seedling pushing fork 41 near the left and right inner sides of the left and right side wall portions 40c and 40c. To be planted.

そして、苗押出フォ−ク４１の押出作動で軸部がブッシュ５１に対して摺動することにより、苗植付具ケ−ス３２ａの主空間部Ａ内の潤滑油が丸軸部４１ａとブッシュ５１の間の隙間をつたってくるが、オイルシール５２によりこの潤滑油を受け止めて空洞部５４内に収容する。潤滑油が丸軸部４１ａの摺動で前記隙間を逐次つたって空洞部５４に供給されても、連通溝５５により空洞部５４内の潤滑油を前記主空間部Ａに戻して空洞部５４内の圧力の上昇を防止し、空洞部５４内からオイルシール５２を介して潤滑油が外部に洩れ出るのを防止し、潤滑油で苗を植え付ける圃場を汚染したり、苗植付具ケース３２ａ内の潤滑油が不足して苗植付具３２の耐久性が低下したりするようなことを防止できる。   Then, the shaft portion slides with respect to the bush 51 by the pushing operation of the seedling pushing fork 41, so that the lubricating oil in the main space portion A of the seedling planting case 32a becomes the round shaft portion 41a and the bush. A gap is formed between the gaps 51, and the lubricating oil is received by the oil seal 52 and accommodated in the cavity 54. Even when the lubricating oil is supplied to the cavity 54 by sequentially sliding the gap by the sliding of the round shaft portion 41 a, the lubricating oil in the cavity 54 is returned to the main space A by the communication groove 55 and the inside of the cavity 54. The oil is prevented from leaking from the cavity 54 through the oil seal 52, and the field where seedlings are planted is contaminated with the lubricating oil, or the seedling planting case 32a It is possible to prevent the durability of the seedling planting tool 32 from being lowered due to the lack of the lubricating oil.

上述の苗植付具３２はブッシュ５１の前側の苗植付具ケ−ス３２ａ部分に連通溝５５を設けた構成としたが、ブッシュ５１の外周面となるブッシュ５１部分に連通溝５５を設けてもよい。   The seedling planting tool 32 described above has a configuration in which the communication groove 55 is provided in the portion of the seedling planting tool case 32a on the front side of the bush 51. However, the communication groove 55 is provided in the bush 51 portion serving as the outer peripheral surface of the bush 51. May be.

尚、以上の実施例は乗用型の田植機の苗植付具について記述したが、本発明は乗用型の田植機に限定されるものではない。
同様に、以上の実施例は回転ケ−スを備える苗植付装置について記述したが、本発明はこれに限定されるものではない。 In addition, although the above Example described the seedling transplanter of the riding type rice transplanter, this invention is not limited to a riding type rice transplanter.
Similarly, although the above example was described about the seedling planting apparatus provided with a rotation case, this invention is not limited to this.

乗用型の田植機の側面図Side view of riding rice transplanter 乗用型の田植機の平面図Top view of riding rice transplanter 回転ケ−スの側面断面図Side cross-sectional view of rotating case 苗植付具の側面断面図Side sectional view of seedling planting tool 植付爪の正面図Front view of planting nails

符号の説明Explanation of symbols

２０：苗載置台、４０：植付爪、４１：苗押出具、３２：苗植付具、３２ａ：苗植付具ケ−ス、４１ａ：丸軸部、４１ｂ：苗押出部、５１：ブッシュ、５２：オイルシール、５５：連通溝、Ａ：主空間部 20: Seedling mounting table, 40: Planting claw, 41: Seedling pushing tool, 32: Seedling planting tool, 32a: Seedling planting case, 41a: Round shaft part, 41b: Seedling pushing part, 51: Bush , 52: oil seal, 55: communication groove, A: main space

Claims (1)

苗載置台（２０）上のマット状の苗から一株分の苗を掻き取る植付爪（４０）と、該植付爪（４０）が掻き取った苗を押し出す苗押出具（４１）と、内部の主空間部（Ａ）に潤滑油を有する苗植付具ケ−ス（３２ａ）を備えた苗植付具において、苗押出具（４１）は、押出作動により苗植付具ケ−ス（３２ａ）内の軸受部材（５１）に対して摺動する軸部（４１ａ）と、苗植付具ケ−ス（３２ａ）の外部で該軸部（４１ａ）の先端に固着された苗押出部（４１ｂ）を備え、軸受部材（５１）の下側には軸部（４１ａ）の外周面に接触するオイルシール（５２）を設け、該オイルシール（５２）から前記主空間部（Ａ）にわたる連通溝（５５）を設けた苗植付具。 A planting claw (40) for scraping one seedling from a mat-like seedling on the seedling mounting table (20), and a seedling pushing tool (41) for pushing out the seedling scraped off by the planting claw (40) In the seedling planting tool provided with the seedling planting tool case (32a) having lubricating oil in the internal main space (A), the seedling pushing tool (41) is a seedling planting tool case by an extrusion operation. A shaft portion (41a) sliding with respect to the bearing member (51) in the sleeve (32a), and a seedling fixed to the tip of the shaft portion (41a) outside the seedling planting case (32a) An oil seal (52) is provided on the lower side of the bearing member (51). The oil seal (52) is in contact with the outer peripheral surface of the shaft portion (41a), and the main space portion (A) is provided from the oil seal (52). ) A seedling planting tool provided with a communication groove (55).
JP2007296795A 2007-11-15 2007-11-15 Seedling transplanter for seedling transplanter Expired - Fee Related JP4946817B2 (en)

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KR1020080108047A KR101056170B1 (en) 2007-11-15 2008-10-31 Hair transplantation tool for hair transplanter
CN2008101763103A CN101433141B (en) 2007-11-15 2008-11-14 Seedling-planting tool for seedling transplanter

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CN102792810A (en) * 2012-08-21 2012-11-28 东北农业大学 Ordered pot seedling-taking device used for pot seedling disc
WO2020217945A1 (en) * 2019-04-25 2020-10-29 株式会社クボタ Field work machine

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JP2008525720A (en) 2004-12-29 2008-07-17 アスペン コンプレッサー、エルエルシー． Small rotary compressor and method related to the compressor
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JPS58187214A (en) * 1982-04-26 1983-11-01 Hitachi Ltd Formation of dipole coil
JPS6019863A (en) * 1983-07-13 1985-02-01 ト−ヨ−サッシビル建材株式会社 Simple scaffold

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102792810A (en) * 2012-08-21 2012-11-28 东北农业大学 Ordered pot seedling-taking device used for pot seedling disc
WO2020217945A1 (en) * 2019-04-25 2020-10-29 株式会社クボタ Field work machine
JP2020178629A (en) * 2019-04-25 2020-11-05 株式会社クボタ Field work machine
JP7195213B2 (en) 2019-04-25 2022-12-23 株式会社クボタ field work machine

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CN101433141A (en) 2009-05-20
CN101433141B (en) 2012-09-19
KR101056170B1 (en) 2011-08-11
JP4946817B2 (en) 2012-06-06

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