JP6816631B2

JP6816631B2 - Work vehicle

Info

Publication number: JP6816631B2
Application number: JP2017090191A
Authority: JP
Inventors: 神谷　寿; 神谷　　寿; 直岐堀田
Original assignee: Iseki and Co Ltd
Current assignee: Iseki and Co Ltd
Priority date: 2017-04-28
Filing date: 2017-04-28
Publication date: 2021-01-20
Anticipated expiration: 2037-04-28
Also published as: CN108781663B; CN108781663A; JP2018186727A

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 in which a planting device for planting seedlings in a field is connected to the rear part of a vehicle body, 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 transplanters equipped with a seedling planting device at the rear part of the machine body, a seedling transplanter having a spare seedling mounting portion including a plurality of spare seedling mounting stands on the side of the machine body is known.

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。 In Patent Document 1 below, a plurality of spare seedling stands are stacked vertically and overlapped in a plan view, and a deployed state in which the plurality of spare seedling stands are developed in a substantially straight line in the front-rear direction. Discloses a seedling transplanter in which the plurality of spare seedling stands can be switched. This switching mechanism is a state in which a plurality of spare seedling stands are attached to a parallel link mechanism consisting of one long moving link member and two short moving link members, and the parallel link mechanism is rotated to overlap in the vertical direction (plan view). The state of the spare seedling stand can be switched between a state in which the seedlings are stacked in a stacking state) and a state in which they are lined up in a substantially straight line in the front-rear direction (a 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 one of the plurality of spare seedling stands is changed from the laminated state to the unfolded posture with respect to the fixed spare seedling stand, the plurality of spare seedling stands are in the unfolded state. On the contrary, when the movable spare seedling stand of any one of the plurality of spare seedling stands is changed to the posture of being stacked with respect to the fixed spare seedling stand, the plurality of spare seedlings can be switched to. The configuration is such that the mounts can be switched to the 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 state of the plurality of spare seedling stands, and can improve the workability of switching the state of the plurality of spare seedling stands as compared with 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。 In addition, there is provided a case in which the seedling box described in Patent Document 2 can be temporarily placed.

特開２０１１−７１３６１号公報Japanese Unexamined Patent Publication No. 2011-71361 特開２０１４−８７２７６号公報Japanese Unexamined Patent 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 so that the seedling box can be placed, and it is configured so that it will not fall from the aircraft due to vibration 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, frequent loading and unloading of seedling boxes in the case is not considered.

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, although the auxiliary worker performs replenishment work from the ridge, there is a problem that it is difficult to collect the seedling box placed on 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 problems of the conventional work vehicle, an object of the present invention is a seedling transplanter capable of providing a case that can be easily taken in and out and collecting a seedling box placed on the case even from 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載せ部材（３８ａ，３８ｂ，３８ｃ）と前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）をそれぞれ支持する支持枠体と前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）をそれぞれ回動自在に連結する複数の移動リンク部材（３９ａ，３９ｂ，３９ｃ）を取り付け、該複数の移動リンク部材（３９ａ，３９ｂ，３９ｃ）の回動により複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）が前後方向に並ぶ展開状態と複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）が上下方向に並ぶ積層状態に切り替え自在に構成した苗移植機において、
前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）に対して、苗箱（６８）を載置する一つの苗箱載せ部材（１０１）を機体外側に設け、該苗箱載せ部材（１０１）に係止部（１０４）を構成し、前記係止部（１０４）により、前記苗箱載せ部材（１０１）を固定することができる受け部材（１０３）を予備苗載せ部材（３８ａ）の支持枠体に設け、前記係止部（１０４）と受け部材（１０３）を連結することにより、前記苗箱載せ部材（１０１）を固定する収納状態（１０１ｂ）と、前記受け部材（１０３）と前記係止部（１０４）の連結が解除されることにより、前記苗箱載せ部材（１０１）を固定しない取出し状態（１０１ａ）に切り替え自在に構成し、前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）が展開状態へ切り替わることにより前記受け部材（１０３）から前記係止部（１０４）が外れることを特徴とする苗移植機とした。 In order to solve the above problems, the invention of claim 1 is a plurality of spare seedling mounting members (38a,) for mounting a seedling box (68) or seedlings on a support machine frame (49) provided on a traveling vehicle body (2). 38b, 38c), a support frame for supporting the plurality of spare seedling mounting members (38a, 38b, 38c), and a plurality of rotatably connecting the plurality of spare seedling mounting members (38a, 38b, 38c), respectively. The moving link members (39a, 39b, 39c) of the above are attached, and a plurality of spare seedling mounting members (38a, 38b, 38c) are arranged in the front-rear direction by rotating the plurality of moving link members (39a, 39b, 39c). In a seedling transplanting machine in which a state and a plurality of spare seedling mounting members (38a, 38b, 38c) are freely switched to a laminated state in which they are arranged in the vertical direction
One seedling box mounting member (101) on which the seedling box (68) is placed is provided on the outside of the machine body with respect to the plurality of spare seedling loading members (38a, 38b, 38c), and the seedling box mounting member (101) is provided. A receiving member (103) capable of fixing the seedling box mounting member (101) by the locking portion (104) is provided as a support frame for the spare seedling mounting member (38a). A stored state (101b) in which the seedling box mounting member (101) is fixed by being provided on the body and connecting the locking portion (104) and the receiving member (103), and the receiving member (103) and the engagement member. By disconnecting the stop portion (104), the seedling box mounting member (101) can be freely switched to the unfixed take-out state (101a), and the plurality of spare seedling mounting members (38a, 38b, 38c) can be switched. ) Is switched to the expanded state, so that the locking portion (104) is disengaged from the receiving member (103).

（削除） (Delete)

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）を予備苗載せ部材（３９ａ，３９ｂ，３９ｃ）の機体外側に設けることで、機体外側から苗箱（６８）を取り出しやすいため、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 according to claim 1, by providing the seedling box mounting member (101) on which the seedling box (68) is placed on the outside of the body of the spare seedling mounting member (39a, 39b, 39c), the seedling box is placed from the outside of the machine body. Since (68) can be easily taken out, the field worker working at the ridge can collect the seedling box.

また、苗箱載せ部材（１０１）から苗箱（６８）を取り出せる取出し状態（１０１ａ）と、苗箱載せ部材（１０１）に苗箱（６８）を収納できる収納状態（１０１ｂ）に切り替え自在に構成し、取出し状態（１０１ａ）に切り替えることで、苗箱（６８）がより取り出しやすくなる。 Further, the seedling box (68) can be taken out from the seedling box mounting member (101) and can be taken out (101a), and the seedling box mounting member (101) can be stored in the seedling box (68). Then, by switching to the take-out state (101a), the seedling box (68) can be taken out more easily.

また、収納状態（１０１ｂ）に切り替えることで、風や機体の振動で、圃場に落下しないため、作業性の低下を防止する。また、受け部材（１０３）に係止する係止部（１０４）を設けることで、作業中の機体の振動や、苗補充及び取出し作業中の振動による切り替わりを防止することができる。 Further, by switching to the stored state (101b), the workability is prevented from being lowered because the machine does not fall into the field due to wind or vibration of the machine body. Further, by providing the locking portion (104) for locking to the receiving member (103), it is possible to prevent the switching due to the vibration of the machine body during the work and the vibration during the seedling replenishment and removal work.

（削除） (Delete)

また、受け部材（１０３）に係止する係止部（１０４）を苗箱載せ部材（１０１）に設け、受け部材（１０３）が複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）が展開状態へ切り替わると受け部材（１０３）から前記係止部（１０４）が外れることで、苗載せ部材（１０１）が取り出し状態（１０１ａ）に回動できるため、操作性が向上する。 Further, a locking portion (104) for locking to the receiving member (103) is provided on the seedling box mounting member (101), and the spare seedling mounting members (38a, 38b, 38c) having a plurality of receiving members (103) are deployed. When the switch is made to, the locking portion (104) is disengaged from the receiving member (103), so that the seedling loading member (101) can rotate to the taken-out state (101a), so that the operability is improved.

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本発明の一実施形態の乗用型田植機の側面図である。It is a side view of the passenger type rice transplanter of one Embodiment of this invention. 図１の乗用型田植機の平面図である。It is a top view of the passenger type rice transplanter of 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。It is a side view of the case where the spare seedling stand of the passenger type rice transplanter of FIG. 1 is arranged in three upper and lower stages (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。It is a side view of the case where the spare seedling stand of the passenger type rice transplanter of FIG. 1 is arranged in three upper and lower stages (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。It is a side view of the case where the spare seedling stand of the passenger type rice transplanter of FIG. 1 is arranged on the same plane (deployed 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。It is a side view of the case where the spare seedling stand of the passenger type rice transplanter of FIG. 1 is arranged on the same plane (deployed 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。It is a top view of the case where the spare seedling stand of the passenger type rice transplanter of FIG. 1 is arranged on the same plane (expanded 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。It is operation control block diagram of the spare seedling stand of the passenger type rice transplanter of 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。It is a side view which shows the laminated state (FIG. 9 (a)) and the deployed state (FIG. 9 (b)) of the spare seedling stand of the passenger type rice transplanter of 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。It is a plan view (FIG. 10 (a)) of the switching drive device of the spare seedling stand of the passenger type rice transplanter of FIG. 1 and the internal structure view (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。It is a top view of the switching drive device of the spare seedling loading stand of the passenger type rice transplanter of FIG. 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。Side view (FIGS. 12 (a) and 12 (b)) and plan view (FIG. 12 (c)) of the spare seedling stand of the passenger-type rice transplanter of FIG. 1, and an enlarged view of the front protruding portion of the spare seedling stand. (Fig. 12 (d)). アンテナフレーム搭載した場合の正面図である。It is a front view when the antenna frame is mounted. アンテナフレーム搭載した場合の側面図である。It is a side view when the antenna frame is mounted. 苗箱載せ台を示す正面図である。It is a front view which shows the seedling box mounting stand. 苗箱載せ台を示す側面図である。It is a side view which shows the seedling box mounting stand. 受け部材と係止部の詳細図面である。It is a detailed drawing of a receiving member and a locking part. サイドフレームの平面図である。It is a top view of a side frame.

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 with reference to 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。 1 and 2 are a side view and a plan view of a riding-type rice transplanter equipped with a fertilizer application device as a powder or granular material feeding device, which is a typical example of the seedling transplanter of the present invention. In this passenger-type rice transplanter 1 with a fertilizer application device, a seedling planting portion 4 is mounted on the rear side of the traveling vehicle body 2 so as to be able to move up and down via an elevating link device 3, and the main body portion of the fertilizer application device 5 is mounted on the rear upper side of the traveling vehicle body 2. Is provided. The left and right directions of the boarding operator toward the forward direction of the passenger-type rice transplanter are called left and right, respectively, and the forward and reverse directions are called forward and backward, 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 provided with a pair of left and right front wheels 10 and 10 and a pair of left and right rear wheels 11 and 11 (traveling devices), which are driving wheels, and a mission case 12 is arranged at the front of the body. The front wheel final cases 13 and 13 are provided on the left and right sides of the mission case 12, and the left and right front wheels project outward from the front wheel support portions whose steering directions of the left and right front wheel final cases 13 and 13 can be changed. Left and right front wheels 10 and 10 are attached to the axles, respectively. Further, the front end portion of the main frame 15 is fixed to the back surface portion of the mission case 12, and the rear wheel gear case 18 and the rear wheel gear case 18 have a rear wheel rolling shaft provided horizontally at the center of the rear end of the main frame 15 as a fulcrum. The rear wheels 11 and 11 are attached to the rear wheel axles in which 18 is supported in a rolling manner and protrudes outward from the rear wheel gear cases 18 and 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 transmission case 12 via the belt transmission device 21 and the hydraulic continuously variable transmission (HST) 23. The rotational power transmitted to the transmission case 12 is shifted by the transmission in the case 12, and then separated into traveling power and external extraction power and taken out. Then, a part of the traveling power is transmitted to the front wheel final cases 13 and 13 to drive the front wheels 10 and 10, and the rest is transmitted to the rear wheel gear cases 18 and 18 to drive the rear wheels 11 and 11. Further, the external extraction power is transmitted to the planting clutch case 25 provided at the rear portion of the traveling vehicle body 2, and then is transmitted to the seedling planting portion 4 by the planting transmission shaft 26, and the fertilizer application device 5 is transmitted by the fertilizer application transmission mechanism 28. Is 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 the engine cover 30, and the seat 31 is installed on the engine cover 30. A front cover 32 incorporating various operation mechanisms is provided in front of the seat 31, and a steering wheel 34 for steering the front wheels 10 and 10 is provided above the front cover 32, and this area is designated as a control unit 33. The lower left and right sides of the engine cover 30 and the front cover 32 are horizontal floor steps 35. The floor steps 35 are partially in a grid pattern (see FIG. 2), and mud on the shoes of workers walking on the floor steps 35 falls into the field. The rear part on 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 and 41. These links 40, 41, 41 are rotatably attached to a rear view gate-shaped link base frame 42 whose base side is erected 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 portion 4 is inserted and connected to the lower end of the vertical link 43, and the seedling planting portion 4 is rotatably connected around the connecting shaft 44.

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, and the cylinder 46 is provided. By expanding and contracting hydraulically, the upper link 40 rotates up and down, and the seedling planting portion 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 is composed of 6 rows of plants, and a transmission case 50 that also serves as a frame and mat seedlings are placed and reciprocated left and right to supply seedlings one by one to the seedling outlet 51a of each row and in a horizontal row. When all the seedlings are supplied to the seedling outlet 51a, ..., The seedlings are transferred downward by the seedling feeding belt 51b, .... The seedlings supplied to the seedling loading platform 51, the seedling outlet 51a, ... Are planted in the field. The attachment device 52, ..., A pair of left and right drawing markers 75 (FIG. 1) that draw a line on the surface of the aircraft in the next stroke are provided.

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。 A center float 55 is provided in the center of the seedling planting portion 4, and side floats 56 and 56 are provided on both left and right sides of the center float 55, respectively. When the aircraft was advanced with these floats 55, 56, 56 grounded on the mud surface of the field, the floats 55, 56, 56 slid while leveling the mud surface, and the seedling planting device 52, Seedlings are planted by ... The floats 55, 56, and 56 are rotatably attached so that the front end side moves up and down according to the unevenness of the topsoil surface of the field, and the vertical movement of the front part of the center float 55 is an angle-of-attack control sensor during planting work. The seedling planting depth is detected by (not shown), and the seedling planting portion 4 is moved up and down by switching the hydraulic valve (not shown) that controls the elevating hydraulic cylinder 46 according to the detection result. Always keep 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 fertilizer application device 5 dispenses the granular fertilizer stored in the fertilizer hopper 60 in a fixed amount by the feeding unit 61, ..., And the fertilizer is attached to the left and right sides of the floats 55, 56, 56 by the fertilizer hose 62, ... Guided to the guide (not shown), ..., and dropped into the fertilizer premises formed near the side of the seedling planting line by the groove-growing body 76 (Fig. 1) provided on the front side of the fertilizer guide, ... ing. The air generated by the blower 58 driven by the electric motor 53 for the blower is blown into the fertilizer hose 62, ... Through the air chamber 59 that is long in the left-right direction, and the fertilizer in the fertilizer hose 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 (a combination of the first rotor 27a and the second rotor 27b may be simply referred to as a rotor 27), which is an example of a ground leveling device, is attached to the seedling planting portion 4. Further, the seedling mounting table 51 is configured to slide in the left-right direction using the support roller 65a of the rectangular support frame 65 having the full width in the left-right direction and the up-down direction to support the entire seedling planting portion 4.

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。 Further, on the left and right sides of the front part of the traveling vehicle body 2, a pair of spare seedling mounting stands 38, 38 for placing seedlings for replenishment can be rotated to a position where they project forward and backward and a position where they are lined up and down. 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 of the case where the first spare seedling stand 38a, the second spare seedling stand 38b, and the third spare seedling stand 38c on the side surface of one of the aircraft are arranged in three upper and lower stages, and a simplified side view is shown. It is shown in FIG. Further, FIG. 5 shows a side view when the first spare seedling stand 38a, the second spare seedling stand 38b, and the third spare seedling stand 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 loading platform 38 is supported by a support machine frame 49 whose base side is arranged below the floor step 35 of the traveling vehicle body 2, and is configured in three upper and lower stages via moving link members 39a, 39b, and 39c. It is composed of a spare seedling stand 38a, a second spare seedling stand 38b, and a third spare seedling stand 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。 The first support frame body 37a, the second support frame body 37b, and the third support frame are integrally formed on the bottom surfaces of the first spare seedling stand 38a, the second spare seedling stand 38b, and the third spare seedling stand 38c, respectively. A body 37c is attached, and rotation shafts 39a1 and 39a2 at both ends of the first moving link member 39a are rotatable at the central portion of the first support frame body 37a and the front end portion of the second support frame body 37b, respectively. The 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, and further. Rotating shafts 39c1 and 39c2 at both ends of the third moving link member 39c are rotatably connected to the rear end portion of the second support frame body 37b and the central portion of the third support frame body 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 rotating shafts 39a2, 39b1, 39b2, 39c1 are welded and attached to the support frame bodies 37a, 37b, 37c. Then, the support pieces (not shown) of the moving link members 39a, 39b, 39c are inserted into the insertion portions (not shown) of the rotating shafts 39a2, 39b1, 39b2, 39c1 welded to the support frame bodies 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。 Further, a rotation fulcrum 37b1 is provided at a substantially central portion of the second moving link member 39b and a substantially central portion of the second support frame body 37b so as to be rotatable with 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 machine frame 49 is provided with two front and rear branch columns 49a and 49b, and the tops of the branch columns 49a and 49b reach near the lower surface of the second support frame body 37b. A rotating shaft 39b3 provided near the center of the second moving link member 39b is provided near the top of the front branching column 49a, and the second moving link member 39b is centered on the rotating shaft 39b3. It is rotatable around 49a. The rotation shaft 39b3 is provided on the second moving link member 39b below the rotation fulcrum 37b1. Further, a rotating shaft 39c3 provided near the rear end of the third moving link member 39c is provided near the top of the rear branch support column 49b, and the third moving link member 39b is rearward around the rotating 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 spare seedling loading platform 38b is not fixed to the front branch support machine frame 49a and the rear support machine frame 49b, which are the body members, and the rotation fulcrum 39b3 is provided from the state in which the second moving link member 39b is shown in FIG. When the rotation fulcrum 39b3 is rotated to the center and the state shown in FIG. 5 is obtained, the rotation fulcrum 39b3 is below the rotation shaft 37b1 on the side surface of the central portion of the second spare seedling mounting table 38b, and therefore is in front of the position shown in FIG. The second spare seedling stand 38b is arranged closer to it. At this time, when the third moving link member 39c also rotates around the rotation fulcrum 39c3 from the state shown in FIG. 3 to the state shown in FIG. 5, the second spare seedling loading table 38c is also shown in FIG. It is placed closer to the front than the indicated position.

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 spare seedling stand 38a, the second spare seedling stand 38b, and the third spare seedling stand 38c are deployed on substantially the same plane, a wide seedling box 68 or the like can be used. When trying to obtain the mounting plane of the above, these three spare seedling mounting stands 38a, 38b, 38c can move forward more than before, and the front end of the machine body can be projected out of the field. For example, it becomes easy to load seedlings from a truck or the like on the spare seedling mounting tables 38a, 38b, 38c at the 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。 Further, as shown in the plan view of FIG. 7, a pair of front projecting portions 38a1, 38b1, 38c1 projecting forward are provided on both front end portions of the first, second and third preliminary seedling mounting tables 38a, 38b, 38c. The rear projecting portions 38a2, 38b2, and 38c2, which project rearwardly, are formed at the center of the rear end portions, respectively. Therefore, when the first, second, and third spare seedling stands 38a, 38b, and 38c are deployed, the rear protrusions 38a, 2, 38b2 of the spare seedling stands 38a, 38b located on the front side of the machine body are on the rear side of the machine body. It will be arranged at a position overlapping with the front protruding portions 38b1, 38c1 of the spare seedling mounting tables 38b, 38c to be located in a side view. Therefore, when the first, second, and third spare seedling stands 38a, 38b, and 38c are arranged in the front-rear direction, the first, second, and third spare seedling stands 38a, 38b, 38c are placed in the front-back direction. Since the seedling boxes 68 can be arranged in a partially fitted state, the seedling boxes 68 to be loaded on the spare seedling mounting stands 38a, 38b, 38c can be smoothly moved to the rear side, and the work efficiency is improved as compared with the conventional case.

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。 Further, as shown in the side views of FIGS. 3 and 5, the front projecting portions 38a1, 38b1, 38c1 of the first, second and third preliminary seedling mounting tables 38a, 38b, 38c have a rear-upward inclined shape (rear-upward inclined portion). ), And the upper surface of the inclined shape is made higher than the seedling loading surface of each spare seedling loading table 38a, 38b, 38c. Further, the rear protruding portions 38a2, 38b2, 38c2 of the first, second and third spare seedling stands 38a, 38b, 38c are made higher than the seedling loading surfaces of the respective spare seedling stands 38a, 38b, 38c, and the front side. It is the same as or lower than the upper surface of the protruding portions 38a1, 38b1, 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 protruding portions 38a1, 38b1, 38c1 are used as the rear ascending inclined portions in this way, when the first, second, and third spare seedling loading stands 38a, 38b, 38c are in the deployed state, the front side spare seedling loading stands When moving the seedling box 68 (see FIG. 12) or the like from the 38a, 38b to the spare seedling loading table 38b, 38c on the rear side, the seedling box 68 can be placed on the rear ascending slope and moved backward. It becomes easier to move such as, and work efficiency is improved compared to the past. Further, since the upper surfaces of the front protruding portions 38a1, 38b1, 38c1 and the rear protruding portions 38a2, 38b2, 38c2 are made higher than the seedling loading surfaces of the spare seedling mounting tables 38a, 38b, 38c, the first to third reserves are prepared. When the seedling stands 38a, 38b, 38c are stored, the seedlings placed on the spare seedling stands 38a, 38b, 38c by the front protruding portions 38a1, 38b1, 38c1 and the rear protruding portions 38a2, 38b2, 38c2. Since it is possible to prevent the box 68 and the like from moving back and forth, it is possible to prevent the seedling box 68 and the like from falling downward from the spare seedling mounting stands 38a, 38b and 38c, and it is not necessary to pick up the dropped seedling box 68 and the like. , Work efficiency is improved compared to the past.

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。 On the left and right sides of the pair of front protrusions 38a1, 38b1, 38c1 of the spare seedling stands 38a, 38b, 38c, and on the bottom of the spare seedling stands 38a, 38b, 38c, the front spare seedling stands 38a, 38b Receiving members 38a3, 38b3, 38c3 for receiving the rear side protrusions 38a2, 38b2 and the like are provided, respectively, and the receiving members 38a3, 38b3, 38c3 project into the space between the pair of front side protrusions 38a1, 38b1, 38c1. Is formed.

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 receiving members 38b3 and 38c3 between the left and right of the front protruding portions 38b1 and 38c1 of the spare seedling mounting stands 38b and 38c receive the rear protruding portions 38a2 and 38b2 of the spare seedling loading stands 38a and 38b on the front side, respectively. Therefore, the spare seedling stands 38a, 38b, 38c are not lowered too much, and the spare seedling stands 38a, 38b, 38c in the deployed state are surely arranged on almost the same plane. The loading work of 68 and the like becomes easy, and the work efficiency is improved as compared with the conventional case.

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。 Further, by providing the receiving members 38a3, 38b3, 38c3 at the bottom of the spare seedling mounting tables 38a, 38b, 38c, the upper end of the rear protruding portion 38a2, 38b2, 38c2 is the upper end of the front protruding portion 38a1, 38b1, 38c1. Since it is located at substantially the same height as or below the portion, the seedling box 68 and the like to be placed on the front protruding portions 38a1, 38b1, 38c1 having the rear ascending inclined portion can be smoothly moved, so that the work efficiency is 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, the first, second, and third partition walls 38a, 38b4 that prevent the seedling boxes 68 and the like from falling at a total of four locations in front of and behind the left and right side surfaces of the first, second, and third spare seedling mounting tables 38a, 38b, and 38c. , 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 moving link member 39b may be provided coaxially with the rotation shaft 37b1 of the second spare seedling mounting table 38b. In this case, the central second reserve seedling loading table 38b 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 operation (rotation) of the first, second, and third moving link members 39a, 39b, 39c causes the first, second, and third spare seedling stands 38a, 38b, 38c to move in the front-rear direction. It can be switched between a side-by-side unfolded state and a stacked state in which the spare seedling stands 38a, 38b, 38c are lined up in the vertical direction, and this switching can be performed by the switching drive device 70 driven by the electric motor 71. The switching drive device 70 has a disk-shaped, semi-circular or semi-circular shape that rotates integrally with a drive gear 71a attached to a rotation shaft (not shown) of the electric motor 71 and a rotation shaft 39b3 of a moving link member 39b that meshes with the drive gear 71a. A semicircular 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 moving link member 39b provided on the front branch support 49a and rotates integrally with the rotation shaft 39b3. Therefore, the rotation shaft 39b3 is driven by the electric motor 71. , And at the same time, the second moving link member 39b integrated with the rotating shaft 39b3 rotates, so that the first, second, and third moving link members 39a, 39b, 39c are in the laminated state and the deployed 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 spare 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 (buttons or levers may be used) (FIGS. 1 and 2) is placed near the seat 31 as a changeover operation means for switching the spare seedling mounting stands 38a, 38b, 38c between the deployed state and the stacked state by the changeover drive device 70. As shown in the simplified views of FIGS. 4 and 6, these spare seedlings are rotated by the spare seedling mounting stands 38a, 38b, 38c in the expanded state or the laminated state by the operation of the changeover switch 73. Stop plates 73a1, 73a2 for stopping the loading platforms 38a, 38b, 38c were provided on the side surfaces of the third preliminary seedling loading platform 38b and the second preliminary seedling loading platform 38c, respectively. When the spare seedling rests 38a, 38b, 38c of the stop plate 73a1 are stacked, the second moving link member 39b hits the stop plate 73a1 and overloads the electric motor 71 to generate an excessive voltage or overheat. The stop plate 73a2 hits the second moving link member 39b when the spare seedling stands 38a, 38b, 38c are in the deployed state, and overloads the electric motor 71 to generate an excessive voltage. It is a member that causes or overheats to stop the operation.

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。 Further, if the stop plates 73a1 and 73a2 continue to come into contact with the second moving link member 39b, the load (the second moving link member 39b comes into contact with the stop plates 73a1 or 73a2 and is driven even though it cannot rotate any more. It is the load of the electric motor 71 that continues, and the energization path using the bimetal 85 is arranged inside the electric motor 71, and the bimetal 85 bends (evacuates) when heated by the load or when an excessive voltage is applied. However, in the case of the voltage type, the operation can be restarted immediately after the stop. In the case of the heating type, the heat of the bimetal 85 is reduced and the rotation of the electric motor 71 is stopped. The electric motor 71 is stopped by (it does not operate until it returns), and the operator does not have to stop the electric motor 71, so that he / she can concentrate on other operations and the work efficiency is higher than before. Improve to.

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。 Further, when the spare seedling rests 38a, 38b, 38c are in the deployed state or the loaded state, the second moving link member 39b is configured to come into contact with the stop plates 73a1 or 73a2, so that the second moving link member 39b is caused by the vibration of the machine body. Moves to prevent the first, second, and third reserve seedling stands 38a, 38b, and 38c from shaking back and forth, preventing the seedlings from falling and the first, second, and third spare seedlings due to shaking. Wear of the mounts 38a, 38b, 38c and other components for loading spare 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。 Further, since the components and circuits such as the switch for stopping the electric motor 71 can be omitted when the first, second, and third spare seedling mounting stands 38a, 38b, and 38c are in the deployed state or the loaded state. The number of parts is greatly 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 or a circuit for sending a stop signal at the same time as the moving link members 39b and 39c come into contact with the switch is required, so that the number of parts is large and the structure is complicated. Moreover, since a limit switch that stops in the deployed state and a limit switch that stops in the loaded state are required, the number of parts is further increased and the structure is complicated.

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。 On the other hand, in the present invention, when the bimetal 85 in the electric motor 71 retracts (bends) due to overvoltage or overheating, the electric motor 71 automatically stops, so that a path for transmitting a stop signal becomes unnecessary. Since it is only necessary to provide a switch for operating the switch in the deployed state and the loaded state and to connect the switch and the electric motor with a cable, the number of parts can be reduced and the structure can be simplified.

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 spare seedling mounting stands 38a, 38b and 38c are in the deployed state, the first, second and third moving link members 39a, 39b and 39c The stop plate 73a1 for stopping the movement of the seedlings is arranged on the second preliminary seedling loading platform 38b in the center stage, and as shown in FIG. 3, the first, second, and third preliminary seedling loading platforms 38a, 38b, and 38c are loaded. By arranging the stop plate 73a2 for stopping the first, second, and third moving link members 39a, 39b, and 39c on the lower third preliminary seedling loading table 38c in the state, the position where the first, second, and third moving link members 39a, 39b, and 39c are in the deployed state or the loaded state Since the first, second, and third moving link members 39a, 39b, and 39c are in contact with each other, the structure can be simplified.

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。 Then, since the first, second, and third moving link members 39a, 39b, and 39c are configured to come into contact with the stop plates 73a1, 73a2 and stop, the first, second, and third moving link members 39a are caused by the vibration of the machine body. , 39b, 39c move to prevent the first, second, and third reserve seedling stands 38a, 38b, 38c from swinging back and forth, preventing the seedlings from falling and the first, second, and second due to shaking. The wear of the third spare seedling mounting table 38a, 38b, 38c and the members around it 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。 Further, the contact between the first, second, and third moving link members 39a, 39b, 39c and the stop plates 73a1, 73a2 makes it easier for the electric motor 71 to be loaded, so that the electric motor 71 stops faster and consumes electric power. The amount 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, FIG. 9 (a) and FIG. 9 (b) show simplified views of the loaded state and the deployed state of the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c, which are other embodiments of the present invention. Shown. In this case, the stop plates 73a1 and 73a2 are provided on the front and rear side surfaces of the second preliminary seedling loading table 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 spare seedling mounting tables 38a, 38b, and 38c are loaded, the upper and lower ends of the second moving link member 39b come into contact with the stop plates 73a1, 73a2, respectively. Since the first, second, and third moving link members 39a, 39b, 39c are in a stopped state, the first, second, and third moving link members 39a, 39b, 39c move due to the vibration of the machine body, and the first, first. The second and third spare seedling stands 38a, 38b, 38c are prevented from swinging back and forth, the seedlings are prevented from falling, and the first, second and third spare seedling stands 38a, 38b, Wear of constituent members such as 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 spare seedling mounting tables 38a, 38b, and 38c are switched from the loaded state to the expanded state, the round frames A and B in FIG. 9B show a partially enlarged view. Since the second moving link member 39b and the first and third moving link members 39a and 39c sandwich the stop plates 73a and 73a2, respectively, the first, second and third moving link members 39a, 39b and 39c are locked. The first, second, and third moving link members 39a, 39b, and 39c are prevented from moving back and forth due to the vibration of the machine body, preventing the seedlings from falling and the spare seedling stand due to the shaking. The 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 of FIG. 10A and the internal structure diagram of the switching drive device 70 of FIG. 10B, in this embodiment, the first cover plate 78 constituting the switching drive device 70 is first. , An auxiliary plate 79 provided with a rotation shaft 71a1 of the drive gear 71a of the electric motor 71 is mounted so as to be out of phase with the rotation shaft 81 of the switching gear 70a that moves the second and third movement link members 39a, 39b, 39c. To do. Then, a motor mounting plate (holding plate) 80 is mounted over 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, the holding plate 80 is provided over 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 are performed. When the link members 39a, 39b, 39c come into contact with the stop plates 73a1, 73a2 and a load is applied, a force for the electric motor 71 to escape is applied to the holding plate 80, and the cover plate 78 receives the force, so that the holding plate 80 receives the force. 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 switching gear 70a is prevented from being separated from the electric motor 71. Therefore, the adjustment work of the switching drive device 70 is performed. Is omitted, and the labor of the worker is reduced.

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 as a plan view of the switching drive device of the first, second and third spare seedling mounting stands 38a, 38b, 38c, the switching drive device 70 is centered on the side surface portion of the second spare seedling loading stand 38b. A guide cover 88 is provided to cover the guide cover 88, 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, and the main cover 83 is connected to the cover plate 78 to form an auxiliary cover. The 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 that the entire guide cover 88 can be adjusted and cleaned without being removed at each maintenance, and maintainability is more 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 be equipped with a bimetal 85 (shown only in FIG. 8) that deforms and stops the energized state when a load is applied and heat of a predetermined temperature or higher is generated. In this way, if the electric motor 71 is overloaded and an overvoltage is generated, or if an overheat is generated and exceeds a predetermined temperature, the bimetal 85 is deformed and the energization is stopped. Therefore, the first, second, and third preliminary seedlings When the mounts 38a, 38b, 38c are in the deployed state or the loaded state, an overvoltage is applied to the electric motor 71, and the electric motor 71 is stopped when it is overheated. Therefore, it is not necessary 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。 Further, it is shown in the side view of the spare seedling stand of FIGS. 12 (a) and 12 (b), the plan view of FIG. 12 (c), and the enlarged view of the front protruding portion of the spare seedling stand of FIG. 12 (d). As described above, front projecting portions 38b1, 38c1 projecting forward are formed at the front end portions of the first, second, and third reserve seedling mounting tables 38a, 38b, and 38c, respectively. A rear ascending inclined surface is formed on 38b1, 38c1, and transport assist rollers 47b, 47c that idle on the front projecting portions 38b1, 38c1 to assist the transport of seedlings are arranged, respectively. Further, the upper surfaces of the transport auxiliary rollers 47b and 47c are configured to project upward from the upper part of the rear ascending inclined surface of the front side projecting portions 38b1 and 38c1.

図１３，１４に示す構成により、第１，第２，第３予備苗載せ台３８ａ，３８ｂ，３８ｃの機体左右方向の外側に苗箱６８を一時的に載置する苗箱載せ部材１０１を配置しているので、機体外側で補助作業している補助作業者が苗箱６８を出し入れしやすく作業性が今まで以上に向上する。 According to the configuration shown in FIGS. 13 and 14, the seedling box mounting member 101 for temporarily mounting the seedling box 68 is arranged on the outside of the first, second and third spare seedling mounting tables 38a, 38b, 38c in the left-right direction of the machine body. Therefore, it is easy for the auxiliary worker who is performing the auxiliary work on the outside of the machine to put in and take out the seedling box 68, and the workability is improved more than ever.

また、苗載せ部材１０１を回動支持する回動支点１０２を第２予備苗載せ台３８ｂを支持する第２支持枠体３７ｂの機体外側に備えることで、苗載せ部材１０１から苗箱６８を取り出せる取り出し状態１０１ａと苗箱６８を収納できる収納状態１０１ｂに切り替え可能な構成を採用している。 Further, the seedling box 68 can be taken out from the seedling loading member 101 by providing a rotating fulcrum 102 for rotating and supporting the seedling loading member 101 on the outside of the body of the second support frame 37b that supports the second spare seedling loading platform 38b. A configuration that can be switched between the take-out state 101a and the storage state 101b that can store the seedling box 68 is adopted.

さらに、苗載せ部材１０１を収納状態１０１ｂで固定することができる受け部材１０３を第１予備苗載せ台３８ａを支持する第１支持枠体３７ａの機体外側に備え、苗載せ部材１０１に受け部材１０３に係止する係止部１０４を設けることで、作業中の機体の振動や、第１，第２，第３予備苗載せ台３８ａ，３８ｂ，３８への苗補充及び取出し作業中の振動による切り替わりを防止することができる。 Further, a receiving member 103 capable of fixing the seedling loading member 101 in the stored state 101b is provided on the outside of the machine body of the first support frame 37a that supports the first spare seedling mounting table 38a, and the seedling loading member 101 is provided with the receiving member 103. By providing the locking portion 104 that locks to the above, switching due to vibration of the machine body during work and vibration during replenishment and removal of seedlings to the first, second, and third spare seedling mounting tables 38a, 38b, and 38. Can be prevented.

また、収納状態１０１ｂで固定することで、苗箱６８本体を固定する構成となるため、機体の振動や風等で圃場内に落下し圃場作業の妨げを防止することができる。 Further, since the seedling box 68 main body is fixed by fixing in the stored state 101b, it is possible to prevent the seedling box 68 from falling into the field due to vibration or wind of the machine body and hindering the field work.

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切り替えると、受け部材１０３から係止部１０４が外れ、苗載せ部材１０１が収納状態１０１ｂから取出し状態１０１ａに切り替わる構成を採用している。この取出し状態１０１ａへは、苗載せ部材１０１本体の自重で回動する構成となっている。 When the first, second, and third spare seedling loading stands 38a, 38b, and 38c are switched to the deployed form in which they are arranged in the front-rear direction, the locking portion 104 is disengaged from the receiving member 103, and the seedling loading member 101 is taken out from the stored state 101b. A configuration that switches to 101a is adopted. The structure is such that the seedling mounting member 101 rotates under its own weight in the ejected state 101a.

また、回動支点１０２にモータ，ソレノイド，トルク・スプリング等を採用することで回動性能を向上させるまたは、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切り替えると、苗載せ部材１０１を取出し状態１０１ａから収納状態１０１ｂに切り替わることとしても良い。（図示省略）
また、苗箱６８の個数が多い場合は、取出し状態１０１ａで載置することで、より多くの苗箱６８を積み込むことも可能である。 Further, the rotation performance is improved by adopting a motor, a solenoid, a torque spring, etc. for the rotation fulcrum 102, or the first, second, and third spare seedling mounting stands 38a, 38b, and 38c are arranged in the front-rear direction. When switching to the expanded form, the seedling loading member 101 may be switched from the taken-out state 101a to the stored state 101b. (Not shown)
Further, when the number of seedling boxes 68 is large, it is possible to load more seedling boxes 68 by placing them in the taken-out state 101a.

また、図１３，図１４のＧＰＳ（ＧｌｏｂａｌＰｏｓｉｔｉｏｎｉｎｇＳｙｓｔｅｍ）によって機体の位置情報を取得するＧＰＳ制御装置（図示省略）を備えており、走行車体２には、ＧＰＳ制御装置を構成する受信アンテナ１２１が配設されている。この受信アンテナ１２１は、所定の時間的な間隔でＧＰＳ座標を取得することにより、地球上での位置情報を所定間隔で取得する位置情報取得装置として設けられている。この受信アンテナ１２１は、アンテナフレーム１２２の上部に取り付けられている。 Further, a GPS control device (not shown) for acquiring the position information of the aircraft by the GPS (Global Positioning System) of FIGS. 13 and 14 is provided, and the traveling vehicle body 2 has a receiving antenna 121 constituting the GPS control device. It is arranged. The receiving antenna 121 is provided as a position information acquisition device that acquires position information on the earth at predetermined intervals by acquiring GPS coordinates at predetermined time intervals. The receiving antenna 121 is attached to the upper part of the antenna frame 122.

上記のアンテナフレーム１２２を搭載した機体の場合、苗箱載せ部材１０１を第１，第２，第３予備苗載せ台３８ａ，３８ｂ，３８ｃの機体左右方向の外側に設けたことで、機体前後方向の作業経路及びスペースを確保することができ、作業性の低下を防止することができる。 In the case of the machine body equipped with the above antenna frame 122, the seedling box mounting member 101 is provided on the outside of the first, second, and third spare seedling mounting stands 38a, 38b, 38c in the left-right direction of the machine body, so that the front-back direction of the machine body The work path and space can be secured, and the deterioration of workability can be prevented.

なお、走行車体上からも苗箱６８を苗箱載せ部材１０１へ出し入れ可能である。 The seedling box 68 can be taken in and out of the seedling box mounting member 101 from the traveling vehicle body.

また、苗載せ部材１０１は細目のフレームで構成されており、手動で受け部材１０３から係止部１０４を外すことができる。 Further, the seedling mounting member 101 is composed of a fine frame, and the locking portion 104 can be manually removed from the receiving member 103.

また、図１７に示す受け部材１０３は、係止部１０４の掛かり代を大きくした形状が採用されているため、第１，第２，第３予備苗載せ台３８ａ，３８ｂ，３８ｃの振動により外れることを防止できる。 Further, since the receiving member 103 shown in FIG. 17 has a shape in which the hooking allowance of the locking portion 104 is increased, the receiving member 103 comes off due to the vibration of the first, second, and third preliminary seedling mounting tables 38a, 38b, and 38c. Can be prevented.

また、図１６に示すリヤステップ３６の機体左右端に転落防止及び機体乗車時の補助グリップの役割を果たすサイドフレーム１２４が設けられている。 Further, side frames 124 are provided at the left and right ends of the rear step 36 shown in FIG. 16 to prevent the aircraft from falling and to serve as an auxiliary grip when the aircraft is on board.

上記のサイドフレーム１２４は、リヤステップ３６の下方のフレームに固定されており、機体側面視で施肥ホッパ６０の高さと同一な位置である。また、図１８に示す機体平面視で、フロントマーカ１２３を機体内側に折り畳んだ収納状態より、機体内側に配置されているため、機体左右方向に突出しておらず外部との接触を防ぐ構成である。 The side frame 124 is fixed to the lower frame of the rear step 36, and is at the same position as the height of the fertilizer hopper 60 when viewed from the side of the machine body. Further, in the plan view of the airframe shown in FIG. 18, since the front marker 123 is arranged inside the airframe from the stored state in which the front marker 123 is folded inside the airframe, it does not protrude in the left-right direction of the airframe and prevents contact with the outside. ..

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 is not limited to a rice transplanter, and may be used as a seedling transplanter for planting other seedlings such as vegetable seedlings.

２走行車体
３８ａ，３８ｂ，３８ｃ複数の予備苗載せ部材
３９ａ，３９ｂ，３９ｃ複数の移動リンク部材
４９支持機枠
６８苗箱
１０１苗箱載せ部材
１０１ａ取出し状態
１０１ｂ収納状態
１０２回動支点
１０３受け部材
１０４係止部 2 Traveling vehicle body 38a, 38b, 38c Multiple spare seedling mounting members 39a, 39b, 39c Multiple moving link members 49 Support machine frame 68 Seedling box 101 Seedling box mounting member 101a Extraction state 101b Storage state 102 Rotation fulcrum 103 Receiving member 104 Locking part

Claims

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載せ部材（３８ａ，３８ｂ，３８ｃ）と前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）をそれぞれ支持する支持枠体と前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）をそれぞれ回動自在に連結する複数の移動リンク部材（３９ａ，３９ｂ，３９ｃ）を取り付け、該複数の移動リンク部材（３９ａ，３９ｂ，３９ｃ）の回動により複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）が前後方向に並ぶ展開状態と複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）が上下方向に並ぶ積層状態に切り替え自在に構成した苗移植機において、
前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）に対して、苗箱（６８）を載置する一つの苗箱載せ部材（１０１）を機体外側に設け、該苗箱載せ部材（１０１）に係止部（１０４）を構成し、前記係止部（１０４）により、前記苗箱載せ部材（１０１）を固定することができる受け部材（１０３）を予備苗載せ部材（３８ａ）の支持枠体に設け、前記係止部（１０４）と受け部材（１０３）を連結することにより、前記苗箱載せ部材（１０１）を固定する収納状態（１０１ｂ）と、前記受け部材（１０３）と前記係止部（１０４）の連結が解除されることにより、前記苗箱載せ部材（１０１）を固定しない取出し状態（１０１ａ）に切り替え自在に構成し、前記複数の予備苗載せ部材（３８ａ，３８ｂ，３８ｃ）が展開状態へ切り替わることにより前記受け部材（１０３）から前記係止部（１０４）が外れることを特徴とする苗移植機。 A plurality of spare seedling mounting members (38a, 38b, 38c) for mounting a seedling box (68) or seedlings on a support machine frame (49) provided on the traveling vehicle body (2) and the plurality of spare seedling mounting members (38a, A support frame body that supports 38b, 38c) and a plurality of moving link members (39a, 39b, 39c) that rotatably connect the plurality of spare seedling mounting members (38a, 38b, 38c) are attached. A plurality of spare seedling mounting members (38a, 38b, 38c) are arranged in the front-rear direction by rotation of the plurality of moving link members (39a, 39b, 39c) and a plurality of spare seedling mounting members (38a, 38b, 38c). In a seedling transplanter that can be freely switched to a laminated state in which
One seedling box mounting member (101) on which the seedling box (68) is placed is provided on the outside of the machine body with respect to the plurality of spare seedling loading members (38a, 38b, 38c), and the seedling box mounting member (101) is provided. A receiving member (103) capable of fixing the seedling box mounting member (101) by the locking portion (104) is used as a support frame for the spare seedling mounting member (38a). A stored state (101b) in which the seedling box mounting member (101) is fixed by being provided on the body and connecting the locking portion (104) and the receiving member (103), and the receiving member (103) and the engagement member. By disconnecting the stop portion (104), the seedling box mounting member (101) can be freely switched to the unfixed take-out state (101a), and the plurality of spare seedling mounting members (38a, 38b, 38c) can be switched. ) Is switched to the expanded state, so that the locking portion (104) is disengaged from the receiving member (103).