JP7392783B2 - work vehicle - Google Patents

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JP7392783B2
JP7392783B2 JP2022140174A JP2022140174A JP7392783B2 JP 7392783 B2 JP7392783 B2 JP 7392783B2 JP 2022140174 A JP2022140174 A JP 2022140174A JP 2022140174 A JP2022140174 A JP 2022140174A JP 7392783 B2 JP7392783 B2 JP 7392783B2
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seedling
seedling box
box mounting
preliminary
mounting member
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JP2022168018A (en
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直岐 堀田
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Iseki and Co Ltd
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Iseki and Co Ltd
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Description

本発明は、圃場に苗を植え付ける植付装置を車体の後部に連結した苗移植機などの作業車両に関するものであり、農業機械の技術分野に属する。 The present invention relates to a work vehicle such as a seedling transplanter that has a planting device connected to the rear of the vehicle body for planting seedlings in a field, and belongs to the technical field of agricultural machinery.

苗植付装置を機体後部に備えた苗移植機において、機体の側部に、複数の予備の苗載せ台からなる予備苗載部を備えた苗移植機が知られている。 Among the seedling transplanting machines equipped with a seedling planting device at the rear of the machine body, there is known a seedling transplanting machine that is equipped with a spare seedling mounting part consisting of a plurality of spare seedling mounting stands on the side of the machine body.

下記特許文献1には、複数の予備苗載せ台が上下多段となって平面視で重複した積層状態と、前記複数の予備苗載せ台が前後向きに略一直線状になって展開した展開状態とに、前記複数の予備苗載せ台を切り替え可能に構成した苗移植機が開示されている。この切り替え機構は、1本の長い移動リンク部材と2本の短い移動リンク部材からなる平行リンク機構に複数の予備苗載台を取り付け、平行リンク機構の回動によって上下方向に重なり合う状態(平面視で重なる積層状態)と前後方向に略一直線上に並ぶ状態(水平方向に並ぶ展開状態)とに予備苗載せ台の状態を切り替え可能な構成である。 Patent Document 1 below discloses a stacked state in which a plurality of preliminary seedling mounting stands are stacked vertically and overlapped in plan view, and a deployed state in which the plurality of preliminary seedling mounting stands are expanded in a substantially straight line in the front and back direction. discloses a seedling transplanter in which the plurality of preliminary seedling mounting stands are configured to be switchable. This switching mechanism attaches a plurality of spare seedling stands to a parallel link mechanism consisting of one long movable link member and two short movable link members. The configuration is such that the state of the preliminary seedling stand can be switched between a stacked state in which the seedlings are stacked on top of each other and a state in which they are lined up substantially in a straight line in the front-back direction (a deployed state in which they are lined up in the horizontal direction).

そして、積層状態から複数の予備苗載せ台のうちのいずれか一つの可動予備苗載せ台を、固定予備苗載せ台に対して展開状態の姿勢に変更すると、複数の予備苗載せ台が展開状態に切り替えられ、逆に、展開状態から複数の予備苗載せ台のうちのいずれか一つの可動予備苗載せ台を、固定予備苗載せ台に対して積層状態の姿勢に変更すると、複数の予備苗載せ台が重複状態に切り替えられる構成である。 Then, when any one of the movable spare seedling stands is changed from the stacked state to the unfolded position with respect to the fixed spare seedling stand, the plurality of spare seedling stands are in the unfolded state. Conversely, if any one of the movable spare seedling stands is changed from the expanded state to the stacked position relative to the fixed spare seedling stand, the multiple spare seedlings are The configuration is such that the platforms can be switched to an overlapping state.

したがって、特許文献1記載の構成は複数の予備苗載せ台の状態の切り替えを簡易迅速に行うことができ、複数の予備苗載せ台の状態の切り替え作業性を従来技術より向上させることができる。 Therefore, the configuration described in Patent Document 1 can easily and quickly switch the states of the plurality of spare seedling stands, and can improve the workability of switching the states of the plurality of spare seedling stands compared to the prior art.

また、特許文献2記載に記載の苗箱を一時的に載置できるケースが設けられている。 Further, a case is provided in which the seedling box described in Patent Document 2 can be temporarily placed.

特開2012-205504号公報Japanese Patent Application Publication No. 2012-205504 特開2014-87276号公報Japanese Patent Application Publication No. 2014-87276

苗箱を載置できるようにケースを設け、振動や風で機体から落下しないように構成されている。 A case is provided to hold seedling boxes, and the structure is designed to prevent them from falling from the aircraft due to vibrations or wind.

しかしながら、ケースに苗箱を頻繁に出し入れすることを考慮されていない。 However, no consideration is given to frequently taking seedling boxes in and out of the case.

また、補助作業者が畦際から補充作業等を行うが、ケースに載置された苗箱は畦際から回収しにくい問題がある。 In addition, an auxiliary worker performs replenishment work from the ridge, but there is a problem in that it is difficult to collect the seedling boxes placed in the case from the ridge.

本発明は、上記従来の作業車両のこの様な課題に鑑み、出し入れしやすいケースを設けると共に、畦際からでもケースに載置された苗箱を回収できる苗移植機を目的とする。 In view of the above-mentioned problems of the conventional work vehicle, the present invention aims to provide a seedling transplanter that is provided with a case that is easy to take in and take out, and that can retrieve seedling boxes placed in the case even from the edge of a ridge.

上記課題を解決するために、請求項1の発明は、走行車体(2)に設けた支持機枠(49)に苗箱(68)又は苗を載置する複数の予備苗枠(38)を備える苗移植機において、前記複数の予備苗枠(38)に苗箱(68)を載置する苗箱載せ部材(101)を設け、前記苗箱載せ部材(101)は、前記予備苗枠(38)の機体外側または機体内側に設け、前記苗箱載せ部材(101)に載置される苗箱(68)は、機体外側に向かって斜め姿勢で支持され、苗箱載せ部材(101)の構成部材のうち、苗箱(68)を支持する底部の機体前側と後側を上方に屈曲させ、前記苗箱載せ部材(101)を複数の予備苗枠(38)にそれぞれ備え、前記複数の苗箱載せ部材(101)が機体の前後方向に並ぶ取り出し状態(101b)または前記複数の苗箱載せ部材(101)が機体の上下方向に並ぶ全体移動状態(101a)であることを特徴とする苗移植機とした。 In order to solve the above problem, the invention of claim 1 includes a seedling box (68) or a plurality of spare seedling frames (38) for placing seedlings on a support frame (49) provided on the traveling vehicle body (2). The seedling transplanter is provided with a seedling box mounting member (101) for placing the seedling boxes (68) on the plurality of spare seedling frames (38), and the seedling box mounting member (101) is mounted on the plurality of spare seedling frames (38). The seedling box (68) provided on the outside or inside of the body of 38) and placed on the seedling box mounting member (101) is supported in an oblique attitude toward the outside of the machine, and the seedling box (68) is mounted on the seedling box mounting member (101). Among the structural members, the front and rear sides of the bottom part supporting the seedling box (68) are bent upward, and the seedling box mounting member (101) is provided in each of the plurality of spare seedling frames (38). The seedling box mounting members (101) are arranged in a take-out state (101b) in the longitudinal direction of the machine body, or the plurality of seedling box mounting members (101) are arranged in the vertical direction of the machine body in an overall moving state (101a). It was used as a seedling transplanter.

請求項2の発明は、前記複数の苗箱載せ部材(101)が全体移動状態(101a)であるときの機体上方に位置する苗箱載せ部材(101)が下方の苗箱載せ部材(101)に載置されている苗箱(68)に対して落下防止の役割を果たすことを特徴とする請求項1に記載の苗移植機とした。 The invention of claim 2 provides a seedling box mounting member (101) located above the machine body when the plurality of seedling box mounting members (101) are in the overall moving state (101a) is a lower seedling box mounting member (101). The seedling transplanter according to claim 1, wherein the seedling transplanter plays a role of preventing the seedling box (68) placed on the seedling box from falling.

請求項3の発明は、前記複数の苗箱載せ部材(101)が取り出し状態(101b)であるときの機体後方に位置する苗箱載せ部材(101)は、機体前方に位置する苗箱載せ部材(101)より上方にあることを特徴とする請求項1または2に記載の苗移植機とした。 In the invention according to claim 3, when the plurality of seedling box mounting members (101) are in the unloading state (101b), the seedling box mounting member (101) located at the rear of the machine body is a seedling box mounting member located at the front of the machine body. The seedling transplanter according to claim 1 or 2, wherein the seedling transplanter is located above (101).

請求項1記載の発明によれば、苗箱(68)載置する苗箱載せ部材(101)を予備苗枠(38)の側方に設けることで、機体外側から苗箱(68)を出し入れしやすいため、畦際で作業する圃場作業者が苗箱を回収することができる。 According to the invention described in claim 1, by providing the seedling box mounting member (101) on which the seedling box (68) is placed on the side of the preliminary seedling frame (38), the seedling box (68) can be taken in and out from the outside of the machine. Because it is easy to remove, field workers working near the ridge can collect the seedling boxes.

また、苗箱(68)は、機体外側に向かって斜め姿勢で支持されることで苗箱載せ部材(101)に接触することを防止できるため、苗箱(68)の破損を防止することができる。 In addition, since the seedling box (68) is supported in an oblique position toward the outside of the aircraft, it can be prevented from coming into contact with the seedling box mounting member (101), so damage to the seedling box (68) can be prevented. can.

また、苗箱(68)を支持する底部の機体前側と後側を上方に屈曲させたことにより、機体の振動や傾斜地を走行中に苗箱(68)が苗箱載せ部材(101)から落下することを防止できる。 In addition, by bending the front and rear sides of the bottom of the machine that supports the seedling box (68) upward, the seedling box (68) can fall from the seedling box mounting member (101) due to vibrations of the machine or while driving on a slope. can be prevented from happening.

また、複数の苗箱載せ部材(101)が機体の前後方向に並ぶ取り出し状態(101b)を構成することで、苗箱(68)を機体前後方向にスライド移動が可能であるため、畦際からでも苗箱(68)を回収しやすい。 In addition, by configuring the take-out state (101b) in which a plurality of seedling box mounting members (101) are lined up in the longitudinal direction of the machine, the seedling box (68) can be slid in the longitudinal direction of the machine. But the seedling box (68) is easy to collect.

また、請求項2に記載の本発明によれば、請求項1に発明の効果に加えて、機体の振動や傾斜地を走行中に苗箱(68)が苗箱載せ部材(101)から落下することを防止できる。 According to the present invention as set forth in claim 2, in addition to the effects of the invention as set forth in claim 1, the seedling box (68) may fall from the seedling box mounting member (101) due to vibration of the aircraft body or while traveling on a slope. This can be prevented.

また、請求項3に記載の本発明によれば、請求項1または2の発明の効果に加えて、苗箱(68)が複数の苗箱載せ部材(101)の位置関係によって機体前側へ案内されやすいため、畦際からでも苗箱(68)を回収しやすい。 According to the present invention as set forth in claim 3, in addition to the effects of the invention as set forth in claim 1 or 2, the seedling box (68) is guided toward the front side of the machine by the positional relationship of the plurality of seedling box mounting members (101). Since the seedling box (68) is easily collected from the ridge, it is easy to collect the seedling box (68).

本発明の一実施形態の乗用型田植機の側面図である。1 is a side view of a riding-type rice transplanter according to an embodiment of the present invention. 図1の乗用型田植機の平面図である。FIG. 2 is a plan view of the riding rice transplanter shown in FIG. 1. FIG. 図1の乗用型田植機の予備苗載せ台を上下三段に配置した場合(積層状態)の側面図である。FIG. 2 is a side view of the riding-type rice transplanter shown in FIG. 1 in which the spare seedling mounting stands are arranged in three tiers (in a stacked state); 図1の乗用型田植機の予備苗載せ台を上下三段に配置した場合(積層状態)の側面簡略図である。FIG. 2 is a simplified side view of the riding-type rice transplanter shown in FIG. 1 in which the preliminary seedling mounting stands are arranged in three tiers (in a stacked state); 図1の乗用型田植機の予備苗載せ台を同一平面に配置した場合(展開状態)の側面図である。FIG. 2 is a side view of the riding-type rice transplanter shown in FIG. 1 when the spare seedling mounting bases are arranged on the same plane (in an unfolded state). 図1の乗用型田植機の予備苗載せ台を同一平面に配置した場合(展開状態)の側面簡略図である。FIG. 2 is a simplified side view of the riding-type rice transplanter shown in FIG. 1 when the spare seedling mounting bases are arranged on the same plane (in an unfolded state). 図1の乗用型田植機の予備苗載せ台を同一平面に配置した場合(展開状態)の平面図である。FIG. 2 is a plan view of the riding-type rice transplanter shown in FIG. 1 when the spare seedling mounting bases are arranged on the same plane (in an unfolded state). 図1の乗用型田植機の予備苗載せ台の作動制御ブロック図である。FIG. 2 is an operation control block diagram of a spare seedling platform of the riding rice transplanter of FIG. 1. FIG. 図1の乗用型田植機の予備苗載せ台の積層状態(図9(a))と展開状態(図9(b))を示す側面簡略図である。FIG. 9 is a simplified side view showing a stacked state (FIG. 9(a)) and an expanded state (FIG. 9(b)) of a spare seedling mounting stand of the riding-type rice transplanter of FIG. 1. FIG. 図1の乗用型田植機の予備苗載せ台の切替駆動装置の平面図(図10(a))と切替駆動装置の内部構造図(図10(b))である。They are a plan view (FIG. 10(a)) of a switching drive device of a spare seedling mounting stand of the riding-type rice transplanter of FIG. 1 and an internal structure diagram (FIG. 10(b)) of the switching drive device. 図1の乗用型田植機の予備苗載せ台の切替駆動装置の平面図である。FIG. 2 is a plan view of a switching drive device for a spare seedling platform of the riding-type rice transplanter shown in FIG. 1; 図1の乗用型田植機の予備苗載せ台の側面図(図12(a),図12(b))と平面図(図12(c))及び予備苗載せ台の前側突出部の拡大図(図12(d))である。A side view (FIG. 12(a), FIG. 12(b)) and a plan view (FIG. 12(c)) of the spare seedling platform of the riding-type rice transplanter shown in FIG. 1, and an enlarged view of the front protrusion of the preliminary seedling platform. (FIG. 12(d)). 苗箱載せ部材の全体移動状態を示す側面図(図13(a))と苗箱載せ部材の個別移動状態を示す側面図(図13(b))A side view (FIG. 13(a)) showing the state of overall movement of the seedling box mounting member and a side view (FIG. 13(b)) showing the state of individual movement of the seedling box mounting member. 苗箱載せ部材の個別移動状態を示す正面図Front view showing the state of individual movement of seedling box mounting members

以下、図面に基づき、本発明の好ましい実施の形態について説明する。 Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

図1及び図2は本発明の苗移植機の典型例である粉粒体繰出し装置として施肥装置を装着した乗用型田植機の側面図と平面図である。この施肥装置付き乗用型田植機1は、走行車体2の後側に昇降リンク装置3を介して苗植付部4が昇降可能に装着され、走行車体2の後部上側に施肥装置5の本体部分が設けられている。搭乗オペレータが乗用型田植機の前進方向に向かって左右方向をそれぞれ左、右といい、前進方向と後進方向をそれぞれ前、後という。 FIGS. 1 and 2 are a side view and a plan view of a riding-type rice transplanter equipped with a fertilization device as a granular material delivery device, which is a typical example of the seedling transplanter of the present invention. This riding-type rice transplanter 1 with a fertilization device has a seedling planting section 4 mounted on the rear side of a traveling vehicle body 2 via an elevating link device 3 so as to be able to be raised and lowered, and a main body portion of a fertilization device 5 on the rear upper side of the traveling vehicle body 2. is provided. When the onboard operator faces the forward direction of the riding rice transplanter, the left and right directions are called left and right, respectively, and the forward and backward directions are called forward and rear, respectively.

走行車体2は、駆動輪である左右一対の前輪10,10及び左右一対の後輪11,11(走行装置)を備えた四輪駆動車両であって、機体の前部にミッションケース12が配置され、そのミッションケース12の左右側方に前輪ファイナルケース13,13が設けられ、該左右前輪ファイナルケース13,13の操向方向を変更可能な各々の前輪支持部から外向きに突出する左右前輪車軸に左右前輪10,10が各々取り付けられている。また、ミッションケース12の背面部にメインフレーム15の前端部が固着されており、そのメインフレーム15の後端左右中央部に前後水平に設けた後輪ローリング軸を支点にして後輪ギヤケース18,18がローリング自在に支持され、その後輪ギヤケース18,18から外向きに突出する後輪車軸に後輪11,11が取り付けられている。 The traveling vehicle body 2 is a four-wheel drive vehicle equipped with a pair of left and right front wheels 10, 10 as drive wheels and a pair of left and right rear wheels 11, 11 (traveling device), and a transmission case 12 is disposed at the front of the vehicle body. front wheel final cases 13, 13 are provided on the left and right sides of the transmission case 12, and left and right front wheels protrude outward from respective front wheel support parts that can change the steering direction of the left and right front wheel final cases 13, 13. Left and right front wheels 10, 10 are respectively attached to the axle. The front end of the main frame 15 is fixed to the back of the transmission case 12, and the rear gear case 18, 18 is supported so as to be freely rolling, and rear wheels 11, 11 are attached to rear wheel axles that protrude outward from rear wheel gear cases 18, 18.

エンジン20はメインフレーム15の上に搭載されており、該エンジン20の回転動力が、ベルト伝動装置21及び油圧無段変速装置(HST)23を介してミッションケース12に伝達される。ミッションケース12に伝達された回転動力は、該ケース12内のトランスミッションにより変速された後、走行動力と外部取出動力に分離して取り出される。そして、走行動力は、一部が前輪ファイナルケース13,13に伝達されて前輪10,10を駆動すると共に、残りが後輪ギヤケース18,18に伝達されて後輪11,11を駆動する。また、外部取出動力は、走行車体2の後部に設けた植付クラッチケース25に伝達され、それから植付伝動軸26によって苗植付部4へ伝動されるとともに、施肥伝動機構28によって施肥装置5へ伝動される。 The engine 20 is mounted on the main frame 15, and the rotational power of the engine 20 is transmitted to the mission case 12 via a belt transmission 21 and a hydraulic continuously variable transmission (HST) 23. The rotational power transmitted to the transmission case 12 is shifted by a transmission within the case 12, and then separated into traveling power and externally extracted power. A portion of the running power is transmitted to the front wheel final cases 13, 13 to drive the front wheels 10, 10, and the rest is transmitted to the rear wheel gear cases 18, 18 to drive the rear wheels 11, 11. In addition, the external power is transmitted to a planting clutch case 25 provided at the rear of the traveling vehicle body 2, and then transmitted to the seedling planting section 4 by a planting transmission shaft 26, and is also transmitted to the fertilization device 5 by a fertilization transmission mechanism 28. transmitted to.

エンジン20の上部はエンジンカバー30で覆われており、その上に座席31が設置されている。座席31の前方には各種操作機構を内蔵するフロントカバー32があり、その上方に前輪10,10を操向操作するハンドル34が設けられており、この領域を操縦部33とする。エンジンカバー30及びフロントカバー32の下端左右両側は水平状のフロアステップ35になっている。フロアステップ35は一部格子状になっており(図2参照)、該ステップ35を歩く作業者の靴についた泥が圃場に落下するようになっている。フロアステップ35上の後部は、後輪フェンダを兼ねるリヤステップ36となっている。 The upper part of the engine 20 is covered with an engine cover 30, and a seat 31 is installed on top of the engine cover 30. In front of the seat 31 is a front cover 32 that houses various operating mechanisms, and above it is provided a handle 34 for steering the front wheels 10, 10, and this area is referred to as a steering section 33. Horizontal floor steps 35 are formed on both left and right sides of the lower ends of the engine cover 30 and the front cover 32. Part of the floor step 35 is shaped like a grid (see FIG. 2), so that mud stuck to the shoes of workers walking on the step 35 falls onto the field. The rear part above the floor step 35 is a rear step 36 that also serves as a rear wheel fender.

昇降リンク装置3は平行リンク機構であって、1本の上リンク40と左右一対の下リンク41,41を備えている。これらリンク40,41,41は、その基部側がメインフレーム15の後端部に立設した背面視門形のリンクベースフレーム42に回動自在に取り付けられ、その先端側に縦リンク43が連結されている。そして、縦リンク43の下端部に苗植付部4に回転自在に支承された連結軸44が挿入連結され、連結軸44を中心として苗植付部4がローリング自在に連結されている。 The elevating link device 3 is a parallel link mechanism, and includes one upper link 40 and a pair of left and right lower links 41, 41. The base sides of these links 40, 41, 41 are rotatably attached to a link base frame 42 in the form of a portal from the back, which stands upright at the rear end of the main frame 15, and a vertical link 43 is connected to the tip side thereof. ing. A connecting shaft 44 rotatably supported by the seedling planting section 4 is inserted and connected to the lower end of the vertical link 43, and the seedling planting section 4 is connected to the connecting shaft 44 so as to be able to roll freely.

メインフレーム15に固着した支持部材(図示せず)と上リンク40に一体形成したスイングアーム(図示せず)の先端部との間に昇降油圧式シリンダ46が設けられており、該シリンダ46を油圧で伸縮させることにより、上リンク40が上下に回動し、苗植付部4がほぼ一定姿勢のまま昇降する。 An elevating hydraulic cylinder 46 is provided between a support member (not shown) fixed to the main frame 15 and the tip of a swing arm (not shown) integrally formed with the upper link 40. By expanding and contracting with hydraulic pressure, the upper link 40 rotates up and down, and the seedling planting section 4 moves up and down while maintaining a substantially constant posture.

苗植付部4は6条植の構成で、フレームを兼ねる伝動ケース50、マット苗を載せて左右往復動し苗を一株分ずつ各条の苗取出口51a,…に供給するとともに横一列分の苗を全て苗取出口51a,…に供給すると苗送りベルト51b,…により苗を下方に移送する苗載せ台51、苗取出口51a,…に供給された苗を圃場に植付ける苗植付装置52,…、次行程における機体進路を表土面に線引きする左右一対の線引きマーカ75(図1)等を備えている。 The seedling planting section 4 has a six-row planting configuration, with a transmission case 50 that also serves as a frame, a mat on which the seedlings are placed and reciprocated from side to side to supply the seedlings one by one to the seedling outlet 51a of each row and in a row horizontally. When all of the seedlings are supplied to the seedling outlet 51a,..., the seedling table 51 transports the seedlings downward by the seedling conveying belt 51b,..., and the seedlings are planted in the field with the seedlings supplied to the seedling outlet 51a,... The attachment device 52, . . . is equipped with a pair of left and right line drawing markers 75 (FIG. 1) for drawing a line on the topsoil surface to indicate the aircraft course for the next stroke.

苗植付部4の下部には中央にセンターフロート55、その左右両側にサイドフロート56,56がそれぞれ設けられている。これらフロート55,56,56を圃場の泥面に接地させた状態で機体を進行させると、フロート55,56,56が泥面を整地しつつ滑走し、その整地跡に苗植付装置52,…により苗が植え付けられる。各フロート55,56,56は圃場表土面の凹凸に応じて前端側が上下動するように回動自在に取り付けられており、植付作業時にはセンターフロート55の前部の上下動が迎角制御センサ(図示せず)により検出され、その検出結果に応じ前記昇降油圧式シリンダ46を制御する油圧バルブ(図示せず)を切り替えて苗植付部4を昇降させることにより、苗の植付深さを常に一定に維持する。 At the lower part of the seedling planting section 4, a center float 55 is provided at the center, and side floats 56, 56 are provided on both sides of the center float 55, respectively. When the aircraft moves forward with these floats 55, 56, 56 in contact with the muddy surface of the field, the floats 55, 56, 56 slide while leveling the muddy surface, and the seedling planting device 52, Seedlings are planted by... Each of the floats 55, 56, and 56 is rotatably attached so that the front end side moves up and down according to the unevenness of the topsoil surface of the field, and during planting work, the up and down movement of the front part of the center float 55 is detected by the angle of attack control sensor. (not shown), and depending on the detection result, a hydraulic valve (not shown) that controls the lifting hydraulic cylinder 46 is switched to raise and lower the seedling planting section 4, thereby increasing the planting depth of the seedlings. is always kept constant.

施肥装置5は、肥料ホッパ60に貯留されている粒状の肥料を繰出部61,…によって一定量ずつ繰り出し、その肥料を施肥ホース62,…でフロート55,56,56の左右両側に取り付けた施肥ガイド(図示せず),…まで導き、施肥ガイド,…の前側に設けた作溝体76(図1),…によって苗植付条の側部近傍に形成される施肥構内に落とし込むようになっている。ブロア用電動モータ53で駆動するブロア58で発生させたエアが、左右方向に長いエアチャンバ59を経由して施肥ホース62,…に吹き込まれ、施肥ホース62,…内の肥料を風圧で強制的に搬送するようになっている。 The fertilization device 5 dispenses a fixed amount of granular fertilizer stored in a fertilizer hopper 60 by a dispensing unit 61,..., and transfers the fertilizer to a fertilizer attached to both left and right sides of floats 55, 56, 56 with fertilization hoses 62,... The fertilizer is guided to a guide (not shown), and is dropped into a fertilization area formed near the side of the seedling planting row by a groove forming member 76 (Fig. 1), provided in front of the fertilizer guide,... ing. Air generated by a blower 58 driven by a blower electric motor 53 is blown into the fertilizing hoses 62,... through a horizontally long air chamber 59, and the fertilizer in the fertilizing hoses 62,... is forced by wind pressure. It is designed to be transported to

苗植付部4には整地装置の一例であるロータ27(第1ロータ27aと第2ロータ27bの組み合わせを単にロータ27ということがある)が取り付けられている。また、苗載せ台51は苗植付部4の全体を支持する左右方向と上下方向に幅一杯の矩形の支持枠体65の支持ローラ65aをレールとして左右方向にスライドする構成である。 A rotor 27 (the combination of the first rotor 27a and the second rotor 27b is sometimes simply referred to as the rotor 27), which is an example of a soil leveling device, is attached to the seedling planting section 4. Further, the seedling platform 51 is configured to slide in the left-right direction using support rollers 65a of a rectangular support frame 65 that supports the entire seedling planting section 4 and has a full width in the left-right and up-down directions as rails.

また、走行車体2の前部左右両側には、補給用の苗を載せておく一対の予備苗載せ台38,38が機体の前後に張り出す位置と上下に並んだ位置とに回動可能に設けられている。 In addition, on both left and right sides of the front part of the traveling vehicle body 2, a pair of spare seedling platforms 38, 38 on which seedlings for supply are placed can be rotated between a position protruding from the front and rear of the vehicle body and a position in which they are lined up vertically. It is provided.

一方の機体側面にある第1予備苗載せ台38a,第2予備苗載せ台38b,第3予備苗載せ台38cを上下三段に配置した場合の側面図を図3に示し、側面簡略図を図4に示す。また、第1予備苗載せ台38a,第2予備苗載せ台38b,第3予備苗載せ台38cを同一平面に配置した場合の側面図を図5に示し、側面簡略図を図6に示す。 FIG. 3 shows a side view when the first preliminary seedling mounting table 38a, the second preliminary seedling loading table 38b, and the third preliminary seedling loading table 38c on one side of the machine are arranged in three upper and lower stages, and a simplified side view is shown in FIG. Shown in Figure 4. Further, FIG. 5 shows a side view when the first preliminary seedling table 38a, second preliminary seedling table 38b, and third preliminary seedling table 38c are arranged on the same plane, and FIG. 6 shows a simplified side view.

予備苗載せ台38は走行車体2のフロアステップ35の下部に基部側を配置した支持機枠49に支持され、移動リンク部材39a,39b,39cを介してそれぞれ上下三段に構成され、第1予備苗載せ台38a、第2予備苗載せ台38b及び第3予備苗載せ台38cからなっている。 The spare seedling platform 38 is supported by a support frame 49 whose base side is disposed below the floor step 35 of the traveling vehicle body 2, and is configured into three upper and lower stages via movable link members 39a, 39b, and 39c. It consists of a preliminary seedling mounting table 38a, a second preliminary seedling mounting table 38b, and a third preliminary seedling mounting table 38c.

これら第1予備苗載せ台38a、第2予備苗載せ台38b及び第3予備苗載せ台38cの底面にはそれぞれ一体的に第1支持枠体37a、第2支持枠体37b及び第3支持枠体37cが取り付けられており、第1支持枠体37aの中央部と第2支持枠体37bの前端部には第1移動リンク部材39aの両端の回動軸39a1,39a2がそれぞれ回動自在に連結し、第1支持枠体37aの後端部と第3支持枠体37cの前端部には第2移動リンク部材39bの両端の回動軸39b1,39b2がそれぞれ回動自在に連結し、さらに第2支持枠体37bの後端部と第3支持枠体37cの中央部には第3移動リンク部材39cの両端の回動軸39c1,39c2とが回動自在に連結している。 A first support frame 37a, a second support frame 37b, and a third support frame are integrally formed on the bottom surfaces of the first preliminary seedling platform 38a, the second preliminary seedling platform 38b, and the third preliminary seedling platform 38c, respectively. A body 37c is attached, and rotating shafts 39a1 and 39a2 at both ends of the first moving link member 39a are rotatably attached to the center part of the first support frame 37a and the front end of the second support frame 37b, respectively. Rotating shafts 39b1 and 39b2 at both ends of the second moving link member 39b are rotatably connected to the rear end of the first support frame 37a and the front end of the third support frame 37c, respectively. Rotation shafts 39c1 and 39c2 at both ends of the third movable link member 39c are rotatably connected to the rear end of the second support frame 37b and the center of the third support frame 37c.

回動軸39a2,39b1,39b2,39c1の外周部は、支持枠体37a,37b,37cに溶接して取り付けてられている。そして、支持枠体37a,37b,37cに溶着された回動軸39a2,39b1,39b2,39c1の挿入部(図示せず)に、移動リンク部材39a,39b,39cの支持片(図示せず)を挿し込んで装着する。 The outer peripheral portions of the rotation shafts 39a2, 39b1, 39b2, and 39c1 are attached to the support frames 37a, 37b, and 37c by welding. Support pieces (not shown) of the movable link members 39a, 39b, 39c are attached to insertion portions (not shown) of the rotation shafts 39a2, 39b1, 39b2, 39c1 welded to the support frames 37a, 37b, 37c. Insert and attach.

また、第2移動リンク部材39bのほぼ中央部と第2支持枠体37bのほぼ中央部には回動支点37b1が設けられ、互いに回動自在となっている。 Moreover, a rotation fulcrum 37b1 is provided at approximately the center of the second movable link member 39b and approximately at the center of the second support frame 37b, so that they are rotatable relative to each other.

また支持機枠49には前後2つの分岐支柱49a,49bが設けられ、分岐支柱49a,49bの頂部は第2支持枠体37bの下面近くまで達している。そして前側分岐支柱49aの頂部付近には第2移動リンク部材39bの中央部付近に設けられた回動軸39b3が設けられ、該回動軸39b3を中心として第2移動リンク部材39bが前側分岐支柱49aの周りを回動自在となっている。前記回動軸39b3は回動支点37b1より下側の第2移動リンク部材39bに設けられている。また後側分岐支柱49bの頂部付近には第3移動リンク部材39cの後端部付近に設けられた回動軸39c3が設けられ、該回動軸39c3を中心として第3移動リンク部材39bが後側分岐支柱49bの周りを回動自在となっている。前記回動軸39c3は回動軸39c1より下側の第3移動リンク部材39cに設けられている。 Further, the support frame 49 is provided with two front and rear branch struts 49a, 49b, and the tops of the branch struts 49a, 49b reach close to the bottom surface of the second support frame 37b. A rotation shaft 39b3 provided near the center of the second movable link member 39b is provided near the top of the front branch column 49a, and the second movable link member 39b rotates around the rotation shaft 39b3. It is rotatable around 49a. The rotation shaft 39b3 is provided on the second movable link member 39b below the rotation fulcrum 37b1. Further, a rotation shaft 39c3 provided near the rear end of the third movable link member 39c is provided near the top of the rear branch column 49b, and the third movable link member 39b is rotated rearward about the rotation shaft 39c3. It is rotatable around the side branch column 49b. The rotation shaft 39c3 is provided on the third moving link member 39c below the rotation shaft 39c1.

第2予備苗載せ台38bは機体部材である前側分岐支持機枠49aと後側支持機枠49bに固定されておらず、第2移動リンク部材39bが図3に示す状態から回動支点39b3を中心に回動して図5に示す状態になる場合には回動支点39b3が第2予備苗載せ台38bの中央部側面の回動軸37b1より下方にあるため、図3に示す位置より前寄りに第2予備苗載せ台38bが配置される。このとき、第3移動リンク部材39cも図3に示す状態から回動支点39c3を中心に回動して図5に示す状態になる場合には同様に第2予備苗載せ台38cも図3に示す位置より前寄りに配置される。 The second preliminary seedling platform 38b is not fixed to the front branch support frame 49a and the rear support frame 49b, which are body members, and the second movable link member 39b moves the rotation fulcrum 39b3 from the state shown in FIG. When it rotates around the center and reaches the state shown in FIG. 5, the rotation fulcrum 39b3 is located below the rotation axis 37b1 on the side surface of the central part of the second preliminary seedling mounting stand 38b, so it is placed before the position shown in FIG. A second preliminary seedling mounting table 38b is arranged nearby. At this time, when the third movable link member 39c also rotates from the state shown in FIG. 3 to the state shown in FIG. It is placed closer to the front than the position shown.

したがって、図7の平面図に示すように第1予備苗載せ台38a、第2予備苗載せ台38b及び第3予備苗載せ台38cをほぼ同一平面上に展開形態とすると、広い苗箱68などの載置平面を得ようとする場合にはこれら3つの予備苗載せ台38a,38b,38cが従来より前寄りに移動して、機体前側端部を圃場の外に突出させることができるので、例えば、畦際でトラックなどから苗を予備苗載せ台38a,38b,38c上に積載する作業が容易となる。 Therefore, as shown in the plan view of FIG. 7, if the first preliminary seedling platform 38a, the second preliminary seedling platform 38b, and the third preliminary seedling platform 38c are expanded on almost the same plane, a wide seedling box 68, etc. When trying to obtain a mounting plane of 1, these three preliminary seedling mounting stands 38a, 38b, and 38c can be moved closer to the front than before, and the front end of the machine body can be made to protrude outside the field. For example, it becomes easier to load seedlings from a truck or the like onto the preliminary seedling platforms 38a, 38b, and 38c at the edge of a ridge.

また図7の平面図に示すように、第1,第2,第3予備苗載せ台38a,38b,38cの前側両端部に前方に向かって突出する一対の前側突出部38a1,38b1,38c1をそれぞれ形成し、後側端部中央に後方に向かって突出する後側突出部38a2,38b2,38c2をそれぞれ形成している。したがって第1,第2,第3予備苗載せ台38a,38b,38cを展開形態にした場合に、機体前側に位置する予備苗載せ台38a,38bの後部突出部38a2,38b2が機体後側に位置する予備苗載せ台38b,38cの前側突出部38b1,38c1と側面視で重複する位置に配置されることになる。このため第1,第2,第3予備苗載せ台38a,38b,38cが前後方向に並ぶ展開形態にあるときには、第1,第2,第3予備苗載せ台38a,38b,38cを前後方向に部分的に嵌め込み状態で並べることができるので、予備苗載せ台38a,38b,38cに積み込む苗箱68を円滑に後側に移動させることができ、作業能率が従来より向上する。 In addition, as shown in the plan view of FIG. 7, a pair of front protrusions 38a1, 38b1, 38c1 protrude forward at both front ends of the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c. Rear protrusions 38a2, 38b2, and 38c2 are respectively formed at the center of the rear end and protrude rearward. Therefore, when the first, second, and third spare seedling stands 38a, 38b, and 38c are in the unfolded configuration, the rear protrusions 38a2, 38b2 of the spare seedling stands 38a, 38b located on the front side of the machine are located on the rear side of the machine. It will be arranged at a position that overlaps the front side protrusions 38b1, 38c1 of the preliminary seedling mounting tables 38b, 38c located therein in a side view. Therefore, when the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are in the deployed configuration in which they are lined up in the front-back direction, the first, second, and third preliminary seedling loading tables 38a, 38b, and 38c are Since the seedling boxes 68 can be arranged in a partially fitted state, the seedling boxes 68 to be loaded on the preliminary seedling mounting tables 38a, 38b, and 38c can be smoothly moved to the rear side, and work efficiency is improved compared to the conventional method.

また図3、図5の側面図に示すように、第1,第2,第3予備苗載せ台38a,38b,38cの前側突出部38a1,38b1,38c1を後上り傾斜形状(後上り傾斜部)にし、該傾斜形状の上面を各予備苗載せ台38a,38b,38cの苗載せ面よりも高くしている。また第1,第2,第3予備苗載せ台38a,38b,38cの後側突出部38a2,38b2,38c2を各予備苗載せ台38a,38b,38cの苗載せ面よりも高くし、且つ前側突出部38a1,38b1,38c1の上面と同じか又は前記上面より低くしている。 In addition, as shown in the side views of FIGS. 3 and 5, the front protrusions 38a1, 38b1, 38c1 of the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are shaped like rear upward slopes (rear upward slopes). ), and the upper surface of the sloping shape is made higher than the seedling mounting surfaces of each of the preliminary seedling mounting tables 38a, 38b, and 38c. In addition, the rear protrusions 38a2, 38b2, 38c2 of the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are made higher than the seedling mounting surface of each of the preliminary seedling loading tables 38a, 38b, and 38c, and the front side It is set to be the same as or lower than the upper surface of the protrusions 38a1, 38b1, and 38c1.

このように前側突出部38a1,38b1,38c1を後上り傾斜部としたので、第1,第2,第3予備苗載せ台38a,38b,38cを展開状態にしたとき、前側の予備苗載せ台38a,38bから後側の予備苗載せ台38b,38cに苗箱68(図12参照)などを移動させるときに、後上り傾斜部に載り上げて後方に移動することができるので、苗箱68などの移動が容易となり、作業能率が従来より向上する。また、前側突出部38a1,38b1,38c1と後側突出部38a2,38b2,38c2の上面を各予備苗載せ台38a,38b,38cの苗載せ面よりも高くしたことにより、第1~第3予備苗載せ台38a,38b,38cを収納形態にしたときに、前側突出部38a1,38b1,38c1と後側突出部38a2,38b2,38c2で各予備苗載せ台38a,38b,38cに載置した苗箱68などの前後移動を防止することができるので、各予備苗載せ台38a,38b,38cから苗箱68等が下方に落下することが防止され、落下した苗箱68等を拾う必要が無くなり、作業能率が従来より向上する。 Since the front protrusions 38a1, 38b1, and 38c1 are formed as rear upward slope parts, when the first, second, and third preliminary seedling stands 38a, 38b, and 38c are in the unfolded state, the front side preliminary seedling stands When moving the seedling box 68 (see FIG. 12) from the back side spare seedling mounting stands 38b, 38c, etc., the seedling box 68 can be moved backward by being placed on the rear upward slope. etc., and work efficiency is improved compared to before. In addition, by making the upper surfaces of the front protrusions 38a1, 38b1, 38c1 and the rear protrusions 38a2, 38b2, 38c2 higher than the seedling mounting surfaces of each of the preliminary seedling mounting stands 38a, 38b, 38c, the first to third preliminary When the seedling stands 38a, 38b, 38c are in the storage mode, the seedlings placed on the respective preliminary seedling stands 38a, 38b, 38c using the front protrusions 38a1, 38b1, 38c1 and the rear protrusions 38a2, 38b2, 38c2. Since it is possible to prevent the boxes 68 and the like from moving back and forth, it is possible to prevent the seedling boxes 68 and the like from falling downward from each of the preliminary seedling platforms 38a, 38b, and 38c, and there is no need to pick up the fallen seedling boxes 68 and the like. , work efficiency is improved compared to before.

各予備苗載せ台38a,38b,38cの一対の前側突出部38a1,38b1,38c1の左右間で、且つ当該予備苗載せ台38a,38b,38cの底部に前側の予備苗載せ台38a,38bの後側突出部38a2,38b2などを受けるための受け部材38a3,38b3,38c3をそれぞれ設け、該受け部材38a3,38b3,38c3は一対の前側突出部38a1,38b1,38c1同士の間の空間部に突出して形成している。 Between the right and left of the pair of front side protrusions 38a1, 38b1, 38c1 of each preliminary seedling table 38a, 38b, 38c, and at the bottom of the preliminary seedling table 38a, 38b, 38c, the front side of the preliminary seedling table 38a, 38b. Receiving members 38a3, 38b3, 38c3 for receiving the rear protrusions 38a2, 38b2, etc. are provided, respectively, and the receiving members 38a3, 38b3, 38c3 protrude into the space between the pair of front protrusions 38a1, 38b1, 38c1. It is formed by

こうして、各予備苗載せ台38b,38cの前側突出部38b1,38c1の左右間に受け部材38b3,38c3で、それぞれの前側の予備苗載せ台38a,38bの後側突出部38a2,38b2を受け止めることができるので、各予備苗載せ台38a,38b,38cが下がり過ぎることがなく、展開状態の各予備苗載せ台38a,38b,38cが確実にほぼ同一平面上に並ぶ姿勢となるため、苗箱68などの積み込み作業が容易となり、作業能率が従来より向上する。 In this way, the rear protrusions 38a2, 38b2 of the front preliminary seedling platforms 38a, 38b are received by the receiving members 38b3, 38c3 between the left and right front protrusions 38b1, 38c1 of the respective preliminary seedling platforms 38b, 38c. This prevents each of the preliminary seedling platforms 38a, 38b, and 38c from lowering too much, and ensures that the expanded preliminary seedling platforms 38a, 38b, and 38c are lined up almost on the same plane. Loading work such as 68 becomes easier, and work efficiency is improved compared to before.

また、予備苗載せ台38a,38b,38cの底部に受け部材38a3,38b3,38c3を設けたことにより、後側突出部38a2,38b2,38c2の上端部は前側突出部38a1,38b1,38c1の上端部と略同じ高さ、または下側に位置するので、後上り傾斜部を有する前側突出部38a1,38b1,38c1に載り上げる苗箱68などの移動が円滑に行われるため、作業能率が従来より向上する。 Furthermore, by providing the receiving members 38a3, 38b3, 38c3 at the bottoms of the preliminary seedling stands 38a, 38b, 38c, the upper ends of the rear protrusions 38a2, 38b2, 38c2 are the upper ends of the front protrusions 38a1, 38b1, 38c1. Since the seedling boxes 68 and the like are placed on the front protrusions 38a1, 38b1, and 38c1 having rear upward slopes, the movement of the seedling boxes 68 and the like can be carried out smoothly, making work efficiency higher than before. improves.

また、第1,第2,第3予備苗載せ台38a,38b,38cの左右側面の前後の合計4箇所に苗箱68などの落下を防ぐ第1,第2,第3仕切壁38a4,38b4,38c4をそれぞれ配置している。 In addition, first, second, and third partition walls 38a4, 38b4 are provided at four locations in total on the front and back of the left and right sides of the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c to prevent the seedling box 68 from falling. , 38c4 are arranged respectively.

また、第2移動リンク部材39bの回動支点39b3を第2予備苗載せ台38bの回動軸37b1と同軸上に設けても良い。この場合は、中央の第2予備苗載せ台38bが前後に移動しない。 Further, the rotation fulcrum 39b3 of the second movable link member 39b may be provided coaxially with the rotation axis 37b1 of the second preliminary seedling mounting stand 38b. In this case, the second preliminary seedling mounting stand 38b at the center does not move back and forth.

上述のように、第1,第2,第3移動リンク部材39a,39b,39cの作動(回動)により、第1,第2,第3予備苗載せ台38a,38b,38cが前後方向に並ぶ展開状態と各予備苗載せ台38a,38b,38cが上下方向に並ぶ積層状態とに切り替えられるが、この切り替えは、電動モータ71で駆動する切替駆動装置70とによって行うことができる。切替駆動装置70には、電動モータ71の図示しない回転軸に取り付けられた駆動ギヤ71aと該駆動ギヤ71aに噛合する移動リンク部材39bの回動軸39b3と一体回転する円盤状、半円状または半月状の切替ギヤ70aが設けられている。 As described above, the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are moved in the front-back direction by the operation (rotation) of the first, second, and third movable link members 39a, 39b, and 39c. The state can be switched between the unfolded state and the stacked state in which the preliminary seedling platforms 38a, 38b, and 38c are arranged vertically, and this switching can be performed by a switching drive device 70 driven by an electric motor 71. The switching drive device 70 includes a drive gear 71a attached to a rotating shaft (not shown) of the electric motor 71, and a disc-shaped, semi-circular, or A half-moon-shaped switching gear 70a is provided.

該切替ギヤ70aは前側分岐支柱49aに設けられた移動リンク部材39bの回動軸39b3と同心円状に設けられ、該回動軸39b3と一体回転するので、電動モータ71の駆動で回動軸39b3が回動し、同時に該回動軸39b3と一体の第2移動リンク部材39bが回動することで、第1,第2,第3移動リンク部材39a,39b,39cが積層状態と展開状態に切り替えられる。 The switching gear 70a is provided concentrically with the rotation shaft 39b3 of the movable link member 39b provided on the front branch column 49a, and rotates integrally with the rotation shaft 39b3, so that the rotation shaft 39b3 is driven by the electric motor 71. rotates, and at the same time, the second movable link member 39b, which is integral with the rotation shaft 39b3, rotates, so that the first, second, and third movable link members 39a, 39b, and 39c are placed in a stacked state and an expanded state. Can be switched.

図8に予備苗載せ台38a,38b,38cの作動制御ブロック図を示す。 FIG. 8 shows an operation control block diagram of the preliminary seedling mounting tables 38a, 38b, and 38c.

切替駆動装置70により予備苗載せ台38a,38b,38cを展開状態と積層状態とに切り替え操作する切替操作手段として切替スイッチ73(ボタン、レバーでもよい)(図1,図2)を座席31近傍に設け、さらに、図4と図6の簡略図に示すように、この切替スイッチ73の操作により展開状態または積層状態に予備苗載せ台38a,38b,38cで回動するときに、これら予備苗載せ台38a,38b,38cを停止させる停止プレート73a1,73a2を第3予備苗載せ台38bと第2予備苗載せ台38cの側面にそれぞれ設けた。停止プレート73a1は予備苗載せ台38a,38b,38cが積層状態になると、停止プレート73a1に第2移動リンク部材39bが当たり、電動モータ71に過負荷をかけて過度の電圧を生じさせる、または過熱させて作動を停止させる部材であり、停止プレート73a2は予備苗載せ台38a,38b,38cが展開状態になると第2移動リンク部材39bに当たり、電動モータ71に過負荷をかけて過度の電圧を生じさせる、または過熱させて作動を停止させる部材である。 A changeover switch 73 (a button or a lever may be used) (FIGS. 1 and 2) is operated near the seat 31 as a changeover operation means for switching the preliminary seedling mounting tables 38a, 38b, and 38c between the unfolded state and the stacked state using the changeover drive device 70. Further, as shown in the simplified diagrams of FIGS. 4 and 6, when the preliminary seedling mounting tables 38a, 38b, and 38c are rotated to the expanded state or stacked state by operating the changeover switch 73, these preliminary seedlings are Stop plates 73a1, 73a2 for stopping the platforms 38a, 38b, 38c were provided on the sides of the third preliminary seedling platform 38b and the second preliminary seedling platform 38c, respectively. When the preliminary seedling platforms 38a, 38b, and 38c are stacked, the second moving link member 39b hits the stop plate 73a1, overloading the electric motor 71 and causing excessive voltage or overheating. When the preliminary seedling platforms 38a, 38b, and 38c are in the unfolded state, the stop plate 73a2 hits the second moving link member 39b, overloading the electric motor 71 and generating an excessive voltage. This is a component that causes the device to overheat or stop operating due to overheating.

また、第2移動リンク部材39bに停止プレート73a1,73a2が接触し続けると負荷(第2移動リンク部材39bが停止プレート73a1又は73a2に接触し、それ以上回動できなくなったにもかかわらず駆動し続ける電動モータ71の負荷のことであり、電動モータ71の内部には、バイメタル85を用いた通電経路が配置されており、負荷により加熱する、または過度の電圧がかかるとバイメタル85が曲がり(退避し)、通電が停止して電動モータ71の回転が止まる構成である。電圧式の場合は、停止後すぐに再操作できる。また、加熱式の場合はバイメタル85の熱が低下して元に戻るまでは作動しない。)で電動モータ71が停止する構成であり、作業者は電動モータ71の停止操作を行わなくてもよいので、他の操作に集中することができ、作業能率が従来以上に向上する。 Furthermore, if the stop plates 73a1 and 73a2 continue to contact the second movable link member 39b, the load (the second movable link member 39b contacts the stop plate 73a1 or 73a2 and drives the stop plate 73a1 or 73a2 even though it cannot rotate any more). This refers to the load on the electric motor 71 that continues. Inside the electric motor 71, a current-carrying path using a bimetal 85 is arranged. When the load heats up the bimetal 85 or excessive voltage is applied, the bimetal 85 bends (retracts). ), the electricity is turned off and the electric motor 71 stops rotating.In the case of a voltage type, it can be operated again immediately after stopping.In addition, in the case of a heating type, the heat of the bimetal 85 decreases and the rotation of the electric motor 71 is stopped. The electric motor 71 is configured to stop at the point where the electric motor 71 does not operate until the operator returns to the original position.The operator does not have to perform an operation to stop the electric motor 71, so the operator can concentrate on other operations, and the work efficiency is higher than before. improve.

また、予備苗載せ台38a,38b,38cが展開状態または積載状態になると、第2移動リンク部材39bが停止プレート73a1又は73a2に接触する構成となるので、機体の振動で第2移動リンク部材39bが動いて第1,第2,第3予備苗載せ台38a,38b,38cが前後に揺れることが防止され、苗の落下が防止されると共に、揺れによる第1,第2,第3予備苗載せ台38a,38b,38c及びその他の予備苗載せ用の構成部材の摩耗が軽減される。 Furthermore, when the preliminary seedling mounting tables 38a, 38b, and 38c are in the unfolded or loaded state, the second movable link member 39b comes into contact with the stop plate 73a1 or 73a2, so the vibration of the machine body causes the second movable link member 39b to This prevents the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c from shaking back and forth due to the movement of the seedlings, thereby preventing the seedlings from falling, and preventing the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c from shaking. Wear of the mounting tables 38a, 38b, 38c and other components for placing preliminary seedlings is reduced.

さらに、第1,第2,第3予備苗載せ台38a,38b,38cを展開状態または積載状態になると電動モータ71を停止させるためのスイッチ等の構成部材及び回路を省略することができるので、部品点数が大幅に削減されると共に、構成が簡潔になる。 Furthermore, since it is possible to omit components and circuits such as a switch for stopping the electric motor 71 when the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are in the unfolded or loaded state, The number of parts is significantly reduced and the configuration is simplified.

従来のようなリミットスイッチを用いると、スイッチに移動リンク部材39b,39cが接触と同時に停止信号を送るケーブルや回路が必要なため、部品点数が多く、構造が複雑になっていた。しかも、展開状態で止めるリミットスイッチと積載状態で止めるリミットスイッチが必要であるため、さらに部品数が増え、構造が複雑になっていた。 When a conventional limit switch is used, a cable and a circuit are required to send a stop signal at the same time as the movable link members 39b and 39c come into contact with the switch, resulting in a large number of parts and a complicated structure. In addition, a limit switch that stops the device in the expanded state and a limit switch that stops the device in the loaded state are required, which further increases the number of parts and complicates the structure.

これに比べ、本願発明では、電動モータ71内のバイメタル85が過電圧または過熱によって退避する(曲がる)と電動モータ71は自動停止するので、停止信号を伝動する経路が不要となるので、電動モータ71を展開状態及び積載状態に操作するスイッチを設け、スイッチと電動モータをケーブルで繋ぐだけでよいため、部品点数の減少、構造の簡略化が図られる。 In contrast, in the present invention, the electric motor 71 automatically stops when the bimetal 85 inside the electric motor 71 retreats (bends) due to overvoltage or overheating, so a path for transmitting a stop signal is not required. It is sufficient to provide a switch for operating the electric motor to the unfolded state and the loaded state, and simply connect the switch and the electric motor with a cable, thereby reducing the number of parts and simplifying the structure.

また、図5に示すように、第1,第2,第3予備苗載せ台38a,38b,38cが展開状態にあるときに、第1,第2,第3移動リンク部材39a,39b,39cの動きを停止させる停止プレート73a1を中央段の第2予備苗載せ台38bに配置すると共に、図3に示すように、第1,第2,第3予備苗載せ台38a,38b,38cの積載状態で第1,第2,第3移動リンク部材39a,39b,39cを停止させる停止プレート73a2を下段の第3予備苗載せ台38cに配置したことにより、前記展開状態または積載状態になる位置で第1,第2,第3移動リンク部材39a,39b,39cが接触する構成となるので、簡潔な構成とすることができる。 Further, as shown in FIG. 5, when the first, second, and third preliminary seedling mounting stands 38a, 38b, and 38c are in the unfolded state, the first, second, and third movable link members 39a, 39b, and 39c A stop plate 73a1 for stopping the movement of the seedlings is disposed on the second preliminary seedling mounting table 38b in the center stage, and as shown in FIG. By arranging the stop plate 73a2 that stops the first, second, and third movable link members 39a, 39b, and 39c in the lower third preliminary seedling mounting stand 38c in the expanded state or loaded state, Since the first, second, and third movable link members 39a, 39b, and 39c are in contact with each other, a simple configuration can be achieved.

そして、第1,第2,第3移動リンク部材39a,39b,39cが停止プレート73a1,73a2に接触して止まる構成となるので、機体の振動で第1,第2,第3移動リンク部材39a,39b,39cが動いて第1,第2,第3予備苗載せ台38a,38b,38cが前後に揺れることが防止され、苗の落下が防止されると共に、揺れによる第1,第2,第3予備苗載せ台38a,38b,38cとその周りの部材の摩耗が軽減される。 Since the first, second, and third movable link members 39a, 39b, and 39c are configured to come into contact with the stop plates 73a1 and 73a2 and stop, vibrations of the aircraft body cause the first, second, and third movable link members 39a to stop. , 39b, 39c are moved and the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are prevented from swinging back and forth, and the falling of the seedlings is prevented, and the first, second, and third seedling stands are prevented from falling due to shaking. Wear of the third preliminary seedling mounting tables 38a, 38b, 38c and the surrounding members is reduced.

さらに、第1,第2,第3移動リンク部材39a,39b,39cと停止プレート73a1,73a2の接触により電動モータ71に負荷がかかりやすくなるので、電動モータ71の停止が速くなり、電力の消費量が軽減される。 Furthermore, the contact between the first, second, and third movable link members 39a, 39b, and 39c and the stop plates 73a1 and 73a2 makes it easier to apply a load to the electric motor 71, so that the electric motor 71 stops faster and consumes less power. quantity is reduced.

また本発明の他の実施例である第1,第2,第3予備苗載せ台38a,38b,38cの積載状態と展開状態の簡略図を図9(a)と図9(b)にそれぞれ示す。この場合の停止プレート73a1,73a2は第2予備苗載せ台38bの前後側面にそれぞれ設けている。 Further, FIGS. 9(a) and 9(b) show simplified diagrams of the loading and unfolded states of the first, second, and third preliminary seedling loading tables 38a, 38b, and 38c, which are other embodiments of the present invention. show. In this case, the stop plates 73a1 and 73a2 are provided on the front and rear sides of the second preliminary seedling mounting stand 38b, respectively.

この場合には、第1,第2,第3予備苗載せ台38a,38b,38cを積載状態にすると、第2移動リンク部材39bの上下端部がそれぞれ停止プレート73a1,73a2に当接して、第1,第2,第3移動リンク部材39a,39b,39cが停止した状態となるので、機体の振動で第1,第2,第3移動リンク部材39a,39b,39cが動いて第1,第2,第3予備苗載せ台38a,38b,38cが前後に揺れることが防止され、苗の落下が防止されると共に、揺れによる第1,第2,第3予備苗載せ台38a,38b,38cを始めとする構成部材の摩耗が軽減される。 In this case, when the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are placed in a loaded state, the upper and lower ends of the second movable link member 39b abut against the stop plates 73a1 and 73a2, respectively. Since the first, second, and third movable link members 39a, 39b, and 39c are in a stopped state, the first, second, and third movable link members 39a, 39b, and 39c move due to the vibration of the aircraft, and the first, second, and third movable link members 39a, 39b, and 39c move. The second and third preliminary seedling platforms 38a, 38b, and 38c are prevented from swinging back and forth, and the seedlings are prevented from falling, and the first, second, and third preliminary seedling platforms 38a, 38b, and Wear of components including 38c is reduced.

また、第1,第2,第3予備苗載せ台38a,38b,38cが積載状態から展開状態に切り替わると、図9(b)の丸枠A,Bに一部拡大図を示すように第2移動リンク部材39bと第1,第3移動リンク部材39a,39cがそれぞれ停止プレート73a1,73a2を挟む構成となるので、第1,第2,第3移動リンク部材39a,39b,39cがロックされた状態となり、機体の振動で第1,第2,第3移動リンク部材39a,39b,39cが動いて前後に揺れることが防止され、苗の落下が防止されると共に、揺れによる予備苗載せ台の構成部材の摩耗が軽減される。 Further, when the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c switch from the loaded state to the unfolded state, the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are placed in the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c, as shown in partially enlarged views in the round frames A and B of FIG. 9(b). Since the second moving link member 39b and the first and third moving link members 39a and 39c sandwich the stop plates 73a1 and 73a2, respectively, the first, second and third moving link members 39a, 39b and 39c are locked. This prevents the first, second, and third movable link members 39a, 39b, and 39c from moving and shaking back and forth due to the vibration of the machine, preventing the seedlings from falling, and preventing the seedlings from falling, as well as preventing the seedlings from falling. Wear of the components is reduced.

図10(a)の切替駆動装置70の平面図と図10(b)の切替駆動装置70の内部構造図に示すように、本実施例では切替駆動装置70を構成するカバープレート78に第1,第2,第3移動リンク部材39a,39b,39cを動かす切替ギヤ70aの回動軸81とは位相をずらして電動モータ71の駆動ギヤ71aの回動軸71a1を設けた補助プレート79を装着する。そして、カバープレート78と補助プレート79に亘ってモータ取付プレート(保持プレート)80を装着し、さらに保持プレート80に前記回動ギヤ70aを回動させる電動モータ71を装着する構成を採用している。 As shown in the plan view of the switching drive device 70 in FIG. 10(a) and the internal structural diagram of the switching drive device 70 in FIG. , an auxiliary plate 79 is provided with a rotation shaft 71a1 of the drive gear 71a of the electric motor 71 out of phase with the rotation shaft 81 of the switching gear 70a that moves the second and third moving link members 39a, 39b, and 39c. do. A motor mounting plate (holding plate) 80 is mounted across the cover plate 78 and the auxiliary plate 79, and an electric motor 71 for rotating the rotating gear 70a is mounted on the holding plate 80. .

上記構成からなる切替駆動装置70では、カバープレート78と補助プレート79に亘って保持プレート80を設け、この保持プレート80に電動モータ71を装着しているので、第1,第2,第3移動リンク部材39a,39b,39cが停止プレート73a1,73a2に接触して負荷がかかる際、電動モータ71が逃げる力が保持プレート80に加えられ、その力をカバープレート78が受けるので、保持プレート80が曲がりにくくなる。 In the switching drive device 70 having the above configuration, a holding plate 80 is provided across the cover plate 78 and the auxiliary plate 79, and the electric motor 71 is mounted on the holding plate 80, so that the first, second, and third movements When the link members 39a, 39b, 39c contact the stop plates 73a1, 73a2 and a load is applied, the force that the electric motor 71 escapes is applied to the holding plate 80, and the cover plate 78 receives this force, so that the holding plate 80 It becomes difficult to bend.

また、前記負荷により電動モータ71には力が掛からないので、電動モータ71の逃げを防止し、電動モータ71と切替ギヤ70aの距離が離れることが防止されるので、切替駆動装置70の調整作業が省略され、作業者の労力が軽減される。 Further, since no force is applied to the electric motor 71 due to the load, the electric motor 71 is prevented from escaping, and the distance between the electric motor 71 and the switching gear 70a is prevented from increasing, so that the adjustment of the switching drive device 70 is performed. is omitted, reducing the labor of the operator.

図11に第1,第2,第3予備苗載せ台38a,38b,38cの切替駆動装置の平面図を示すように、第2予備苗載せ台38bの側面部を中心に切替駆動装置70を覆うガイドカバー88を設け、該ガイドカバー88を電動モータ71の駆動ギヤ71aを覆うメインカバー83と電動モータ71を覆う補助カバー82に分割し、メインカバー83をカバープレート78と連結し、補助カバー82をメインカバー83及びカバープレート78と連結する構成とした。 As shown in FIG. 11, which is a plan view of the switching drive device for the first, second, and third auxiliary seedling platforms 38a, 38b, and 38c, the switching drive device 70 is operated around the side surface of the second auxiliary seedling platform 38b. A guide cover 88 is provided to cover the drive gear 71a of the electric motor 71, and the guide cover 88 is divided into a main cover 83 that covers the drive gear 71a of the electric motor 71 and an auxiliary cover 82 that covers the electric motor 71.The main cover 83 is connected to the cover plate 78, and the auxiliary cover 82 is connected to the main cover 83 and the cover plate 78.

図11に示す構成により、補助カバー82を外すと電動モータ71及び保持プレート80が露出するので、ガイドカバー88全体をメンテナンスのたびに外すことなく調整や掃除ができ、メンテナンス性が今まで以上に向上する。 With the configuration shown in FIG. 11, when the auxiliary cover 82 is removed, the electric motor 71 and the holding plate 80 are exposed, so the guide cover 88 can be adjusted and cleaned without having to remove the entire guide cover 88 every time maintenance is performed, making maintenance easier than ever. improves.

前記電動モータ71には、負荷がかかり所定温度以上の熱が発生すると変形して通電状態を停止するバイメタル85(図8にのみ図示)を内装してもよい。こうして、もし電動モータ71に過負荷が掛かり、過電圧が発生する、または過熱が発生して所定温度以上になるとバイメタル85が変形して通電を停止させるので、第1,第2,第3予備苗載せ台38a,38b,38cが展開状態または積載状態になった際に、電動モータ71に過電圧がかかる、過熱されると停止するので、電動モータ71の停止操作を行う必要がなくなる。 The electric motor 71 may include a bimetal 85 (shown only in FIG. 8) that deforms and stops energizing when a load is applied and heat above a predetermined temperature is generated. In this way, if the electric motor 71 is overloaded and an overvoltage is generated, or if the temperature exceeds a predetermined temperature due to overheating, the bimetal 85 is deformed and the electricity supply is stopped. When the platforms 38a, 38b, and 38c are in the unfolded or loaded state, the electric motor 71 will stop if an overvoltage is applied to it or if it becomes overheated, so there is no need to perform an operation to stop the electric motor 71.

また、図12(a),図12(b)の予備苗載せ台の側面図と図12(c)の平面図及び図12(d)の予備苗載せ台の前側突出部の拡大図に示すように第1,第2,第3予備苗載せ台38a,38b,38cの前側端部には、それぞれ前方に向かって突出する前側突出部38b1,38c1が形成されているが、これら前側突出部38b1,38c1には後上り傾斜面を形成し、各前側突出部38b1,38c1に遊転して苗の搬送を補助する搬送補助ローラ47b,47cをそれぞれ配置する。また搬送補助ローラ47b,47cの上面が前記前側突出部38b1,38c1の後上り傾斜面の上部よりも上方に突出する構成としている。 In addition, the side views of the preliminary seedling platform shown in FIGS. 12(a) and 12(b), the plan view of FIG. 12(c), and the enlarged view of the front protrusion of the preliminary seedling platform shown in FIG. 12(d) Front protrusions 38b1 and 38c1, which protrude forward, are formed at the front ends of the first, second, and third preliminary seedling stands 38a, 38b, and 38c, respectively. 38b1, 38c1 are formed with rear upward slopes, and conveyance assisting rollers 47b, 47c are disposed, respectively, on the front protrusions 38b1, 38c1 to freely rotate and assist in conveying the seedlings. Further, the upper surfaces of the conveyance auxiliary rollers 47b, 47c are configured to protrude higher than the upper portions of the rear upward slopes of the front protrusions 38b1, 38c1.

また、図13と図14に示す苗箱載せ部材101について説明する。 Further, the seedling box mounting member 101 shown in FIGS. 13 and 14 will be explained.

第1,第2,第3予備苗載せ台38a,38b,38cの機体外側に苗箱68を載置する苗箱載せ部材101が各々設けられている。この苗箱載せ部材101は予備苗載せ台に固定されているため、予備苗載せ台と一緒に移動する構成としている。 A seedling box mounting member 101 on which a seedling box 68 is placed is provided on the outside of each of the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c. Since this seedling box mounting member 101 is fixed to the spare seedling mounting table, it is configured to move together with the preliminary seedling mounting table.

また、線材で構成し機体前後方向と上方は開放しており、苗箱載せ部材101の前後端部に傾斜を設けている。このため、機体の前後方向及び上方から苗箱68を出し入れでき、傾斜により苗箱68を苗箱載せ部材101に載置したときに機体の振動で落下しないようになっている。 Further, it is made of a wire rod and is open in the front and rear directions and the upper part of the body, and the front and rear ends of the seedling box mounting member 101 are sloped. Therefore, the seedling box 68 can be taken in and out from the front and rear directions and from above the machine body, and the slope prevents the seedling box 68 from falling due to the vibration of the machine body when placed on the seedling box mounting member 101.

また、第1,第2,第3予備苗載せ台38a,38b,38cが積載状態から展開状態に切り替わると苗場箱載せ部材101も同じように苗箱載せ部材101が機体の上下方向に並ぶ全体移動状態101aから機体前後方向に並ぶ取り出し状態101bに切り替わる。 Furthermore, when the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c are switched from the loading state to the unfolded state, the seedling box mounting members 101 are similarly arranged in the vertical direction of the machine body. The moving state 101a is switched to the take-out state 101b where the objects are lined up in the longitudinal direction of the machine.

取出し状態101bは、苗箱載せ部材101が機体の前後方向に並ぶことで、苗箱載せ部材101同士が隣接するレール状になり、機体から圃場へ苗箱68を積み下ろししやすい。 In the unloading state 101b, the seedling box mounting members 101 are lined up in the longitudinal direction of the machine body, so that the seedling box mounting members 101 form adjacent rails, making it easy to load and unload the seedling boxes 68 from the machine body to the field.

また、圃場側からも苗箱載せ部材101に載置された苗箱68を取出しやすいため、作業性が向上する。 Further, since the seedling box 68 placed on the seedling box mounting member 101 can be easily taken out from the field side, work efficiency is improved.

また、取出し状態101bの際に、機体の後方に位置する苗箱載せ部材101の方が機体前方に位置する苗箱載せ部材101より上方に位置することで、苗箱68をスムーズに機体前方へ送ることができる。 In addition, in the take-out state 101b, the seedling box mounting member 101 located at the rear of the machine is located higher than the seedling box mounting member 101 located at the front of the machine, so that the seedling box 68 can be moved smoothly to the front of the machine. Can be sent.

また、苗箱載せ部材101は苗箱68を機体外側に向けて斜め姿勢に載置するよう構成されている。そうすることで、第1,第2,第3予備苗載せ台38a,38b,38cが積載状態(全体移動状態101a)であるとき、苗箱68が機体内側へ傾き予備苗載せ台と接触することが防止できる。 Further, the seedling box mounting member 101 is configured to place the seedling box 68 in an oblique position facing the outside of the body. By doing so, when the first, second, and third preliminary seedling platforms 38a, 38b, and 38c are in the loaded state (whole movement state 101a), the seedling box 68 tilts toward the inside of the machine body and comes into contact with the preliminary seedling platforms. This can be prevented.

また、苗箱68を苗箱載せ部材101に載置した状態で全体移動状態101aと取出し状態101bに切り替え可能である。全体移動状態101aでは、苗箱載せ部材101同士が離間し、機体の上下方向に並ぶことで、上方に位置する苗箱載せ部材101が下方に位置する苗箱68を固定する役割を果たしている。尚、最上部に載置する苗箱68は別固定部材(図示省略)により機体からの落下を防止することができる。 Further, with the seedling box 68 placed on the seedling box mounting member 101, it is possible to switch between the entire moving state 101a and the taking out state 101b. In the overall movement state 101a, the seedling box mounting members 101 are spaced apart from each other and lined up in the vertical direction of the machine body, so that the seedling box mounting members 101 positioned above play the role of fixing the seedling box 68 located below. Note that the seedling box 68 placed on the top can be prevented from falling from the body by a separate fixing member (not shown).

また、苗箱載せ部材101の前端部と後端部が機体上方に向かって曲げ形状が設けられている。これにより、苗箱68が機体の振動や傾斜地を走行中に滑り落ちないようになる。 Further, the front end and the rear end of the seedling box mounting member 101 are bent toward the upper side of the body. This prevents the seedling box 68 from sliding due to vibrations of the aircraft body or while traveling on a slope.

本発明にかかる苗移植機は、田植機に限らず、野菜苗などのその他の苗を植え付ける苗移植機として利用可能性がある。 The seedling transplanter according to the present invention can be used not only as a rice transplanter but also as a seedling transplanter for planting other seedlings such as vegetable seedlings.

2 走行車体
49 支持機枠
68 苗箱
101 苗箱載せ部材
101a 全体移動状態
101b 個別移動状態
2 Traveling vehicle body 49 Support machine frame 68 Seedling box 101 Seedling box mounting member 101a Overall movement state 101b Individual movement state

Claims (3)

走行車体(2)に設けた支持機枠(49)に苗箱(68)又は苗を載置する複数の予備苗枠(38)を備える苗移植機において、
前記複数の予備苗枠(38)に苗箱(68)を載置する苗箱載せ部材(101)を設け、前記苗箱載せ部材(101)は、前記予備苗枠(38)の機体外側または機体内側に設け、前記苗箱載せ部材(101)に載置される苗箱(68)は、機体外側に向かって斜め姿勢で支持され、苗箱載せ部材(101)の構成部材のうち、苗箱(68)を支持する底部の機体前側と後側を上方に屈曲させ、
前記苗箱載せ部材(101)を複数の予備苗枠(38)にそれぞれ備え、
前記複数の苗箱載せ部材(101)が機体の前後方向に並ぶ取り出し状態(101b)または前記複数の苗箱載せ部材(101)が機体の上下方向に並ぶ全体移動状態(101a)であることを特徴とする苗移植機。
In a seedling transplanter equipped with a seedling box (68) or a plurality of spare seedling frames (38) for placing seedlings on a support frame (49) provided on a traveling vehicle body (2),
A seedling box mounting member (101) for placing seedling boxes (68) on the plurality of spare seedling frames (38) is provided, and the seedling box mounting member (101) is mounted on the outside of the machine body of the preliminary seedling frame (38) or The seedling box (68) provided inside the machine body and placed on the seedling box mounting member (101) is supported in an oblique attitude toward the outside of the machine body, and among the constituent members of the seedling box mounting member (101), the seedling box (68) is The front and rear sides of the bottom of the machine that support the box (68) are bent upward,
The seedling box mounting member (101) is provided in each of a plurality of preliminary seedling frames (38),
The plurality of seedling box mounting members (101) are in a take-out state (101b) arranged in the longitudinal direction of the machine body, or the plurality of seedling box mounting members (101) are in a whole movement state (101a) arranged in the vertical direction of the machine body. Characteristic seedling transplanter.
前記複数の苗箱載せ部材(101)が全体移動状態(101a)であるときの機体上方に位置する苗箱載せ部材(101)が下方の苗箱載せ部材(101)に載置されている苗箱(68)に対して落下防止の役割を果たすことを特徴とする請求項1に記載の苗移植機。 When the plurality of seedling box mounting members (101) are in the entire movement state (101a), the seedling box mounting member (101) located above the machine body is placed on the lower seedling box mounting member (101). The seedling transplanter according to claim 1, characterized in that it plays a role of preventing the box (68) from falling. 前記複数の苗箱載せ部材(101)が取り出し状態(101b)であるときの機体後方に位置する苗箱載せ部材(101)は、機体前方に位置する苗箱載せ部材(101)より上方にあることを特徴とする請求項1または2に記載の苗移植機。 When the plurality of seedling box mounting members (101) are in the unloading state (101b), the seedling box mounting member (101) located at the rear of the machine is located above the seedling box mounting member (101) located at the front of the machine. The seedling transplanter according to claim 1 or 2, characterized in that:
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