JP2024002499A - Riding type seeding transplanter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a riding type seeding transplanter equipped with a preliminary seeding loading part which is efficient in seeding supply operation since, in two loading bases of the preliminary seeding loading part installed in the riding type seeding transplanter, there is a type that switches between a state continuous in a same planar state in a body front/rear direction and a folded state, however, in doing seeding supply operation by making the two loading bases continuous in the same planar state in the body front/rear direction, a short projection length from a body front part sometimes causes inefficiency for the seeding supply operation because a tip of the preliminary seeding loading part fails to reach a ridge, in the case where a water channel or the like exists in the ridges and between a road and a field.

SOLUTION: For a first loading base 51a in which a preliminary seeding loading part 50 is fixed to a body, there is provided a second loading base 51b that can change a posture between a laminated state and a developed state linearly developed situated on a front side of the first loading base 51a, by means of a link mechanism 52. Then, in the second loading base 51b, there is installed a rotary loading base 51c which can change a posture from a laminated state to a linearly developed state by rotating to the body front side around a pivot 53.

SELECTED DRAWING: Figure 2

COPYRIGHT: (C)2024,JPO&INPIT

Description

本発明は、予備苗載部を装備した乗用型苗植機に関する。 The present invention relates to a riding-type seedling transplanter equipped with a preliminary seedling mount.

従来、圃場を走行しながら苗を植え付ける乗用型苗植機において、走行車体に２つの積載台を設けた予備苗載部を装備し、該２つの積載台が機体前後方向に同一平面状に連なる状態と折り畳んだ状態に切り換えるものがある（例えば、特許文献１参照） Conventionally, in a riding-type seedling transplanter that plants seedlings while traveling in a field, the traveling vehicle body is equipped with a spare seedling loading section with two loading platforms, and the two loading platforms are connected in the same plane in the front and back direction of the machine. There are devices that can switch between the folded and folded states (for example, see Patent Document 1)

特開２０１４－０５７５５６号公報JP2014-057556A

２つの積載台を設けた予備苗載部を装備した小型の乗用型苗植機であり、安価で小さな圃場での機体の取り回しも良い。 It is a small, riding-type seedling transplanter equipped with a spare seedling loading section with two loading tables, and is inexpensive and easy to maneuver in small fields.

然しながら、２つの積載台を機体前後方向に同一平面状に連なる状態にして苗供給作業を行うが、機体前部からの突出長さが短くて、畦や道路と圃場の間に水路等がある場合に、予備苗載部の先端が畦に届かず苗供給作業の効率が悪い場合がある。 However, although seedling feeding work is carried out with two loading platforms connected in the same plane in the front and back direction of the machine, the protrusion length from the front of the machine is short, and there are waterways, etc. between the ridges, roads, and fields. In some cases, the tip of the preliminary seedling loading section may not reach the ridge, resulting in poor seedling supply efficiency.

本発明は、上記に鑑みてなされたものであって、苗供給作業の効率が良い予備苗載部を装備した乗用型苗植機を提供することを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to provide a riding-type seedling planting machine equipped with a spare seedling mounting section that allows for efficient seedling supply work.

請求項１記載の発明は、走行車体２に苗植付部３０と予備苗載部５０を設けた乗用型苗植機において、該予備苗載部５０が機体に固定した第１積載台５１ａに対して、リンク機構５２にて積層状態と第１積載台５１ａの前側に位置する直線状に展開した展開状態に姿勢変更できる第２積載台５１ｂを装備し、該第２積載台５１ｂに、積層状態と機体前方に枢軸５３にて回動して直線状に展開した展開状態に姿勢変更できる回動積載台５１ｃを設けた乗用型苗植機である。 The invention according to claim 1 is a riding-type seedling planting machine in which a seedling planting section 30 and a preliminary seedling loading section 50 are provided on a traveling vehicle body 2, in which the preliminary seedling loading section 50 is mounted on a first loading platform 51a fixed to the body. On the other hand, a second loading platform 51b is equipped with which the posture can be changed between a stacked state and a linearly deployed state located in front of the first loading platform 51a using a link mechanism 52. This is a riding-type seedling transplanter equipped with a rotary loading platform 51c that can rotate on a pivot 53 at the front of the machine to change its posture to a linearly deployed deployed state.

請求項１記載の発明によれば、予備苗載部５０が機体に固定した第１積載台５１ａに対して、リンク機構５２にて積層状態と第１積載台５１ａの前側に位置する直線状に展開した展開状態に姿勢変更できる第２積載台５１ｂを装備し、該第２積載台５１ｂに、積層状態と機体前方に枢軸５３にて回動して直線状に展開した展開状態に姿勢変更できる回動積載台５１ｃを設けたので、前後方向に連なり同一平面状になる３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃを装備した予備苗載部５０であってもリンク機構５２を短く小型の構成とすることができ、機体の小型軽量化が図れる。 According to the invention as set forth in claim 1, the preliminary seedling loading section 50 is connected to the first loading platform 51a fixed to the machine body by the link mechanism 52 in a stacked state and in a straight line located on the front side of the first loading platform 51a. The second loading platform 51b is equipped with a second loading platform 51b that can change its attitude to a deployed state, and the second loading platform 51b can change its attitude from a stacked state to a deployed state where it is rotated forward on a pivot shaft 53 and deployed linearly. Since the rotary loading table 51c is provided, even if the preliminary seedling loading section 50 is equipped with three first loading tables 51a, a second loading table 51b, and a rotating loading table 51c that are connected in the front and back direction and have the same plane. The link mechanism 52 can be made short and compact, and the aircraft body can be made smaller and lighter.

また、予備苗載部５０は、小型軽量化が図れた前後方向に連なり同一平面状になる３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃを装備しているので、畦や道路と圃場の間に水路等があって離れていても展開状態の予備苗載部５０先端部は畦上に位置させることができて苗供給作業が効率良く容易に行える。 In addition, the preliminary seedling loading section 50 is equipped with three first loading tables 51a, second loading tables 51b, and rotating loading tables 51c that are connected in the front and back direction and have the same plane, which are small and lightweight. Even if there is a waterway or the like between the ridge or the road and the field and the field is separated, the tip of the preliminary seedling loading part 50 in the unfolded state can be positioned on the ridge, and the seedling supply work can be carried out efficiently and easily.

請求項２記載の発明は、回動積載台５１ｃの上面側及び下面側に各々左右側壁５４ａを設けた請求項１に記載の乗用型苗植機である。 The invention according to claim 2 is the riding type seedling planting machine according to claim 1, wherein left and right side walls 54a are provided on the upper surface side and the lower surface side of the rotary loading platform 51c, respectively.

請求項２記載の発明によれば、請求項１記載の発明の作用効果に加えて、回動積載台５１ｃの上面側及び下面側に各々左右側壁５４ａを設けたので、回動積載台５１ｃが展開状態または積層状態の何れの状態であっても、苗箱を脱落するような事態を回避して適切に載置できる。 According to the invention set forth in claim 2, in addition to the effects of the invention set forth in claim 1, the left and right side walls 54a are provided on the upper surface side and the lower surface side of the rotating loading platform 51c, respectively, so that the rotating loading platform 51c Regardless of whether the seedling box is in an expanded state or a stacked state, the seedling box can be appropriately placed without falling off.

請求項３記載の発明は、回動積載台５１ｃが展開状態で上面側に左右側壁５４ａを設け、下面側に空箱収納部５５を設けた請求項１に記載の乗用型苗植機である。 The invention according to claim 3 is the riding-type seedling planting machine according to claim 1, wherein left and right side walls 54a are provided on the upper surface side and an empty box storage section 55 is provided on the lower surface side when the rotating loading platform 51c is in the unfolded state. .

請求項４記載の発明は、回動積載台５１ｃの載置面５４ｂ先端部に開口状の把持部５４ｅを設けた請求項１～請求項３の何れか1項に記載の乗用型苗植機である。 The invention according to claim 4 is the riding-type seedling transplanter according to any one of claims 1 to 3, wherein an opening-shaped grip portion 54e is provided at the tip of the mounting surface 54b of the rotary loading platform 51c. It is.

請求項５記載の発明は、回動積載台５１ｃが展開状態で上面側に左右側壁５４ａを設け、下面側に突出した把持部５４ｅを設けた請求項１～請求項３の何れか1項に記載の乗用型苗植機である。 The invention set forth in claim 5 is based on any one of claims 1 to 3, wherein the rotating loading platform 51c is provided with left and right side walls 54a on the upper surface side and a grip portion 54e protruding on the lower surface side when the rotating loading platform 51c is in the unfolded state. This is the riding-type seedling planting machine described above.

本発明の実施形態にかかる乗用型田植機の側面図である。FIG. 1 is a side view of a riding rice transplanter according to an embodiment of the present invention. 同乗用型田植機の予備苗載部の作用説明用の側面図である。It is a side view for explaining the operation of the preliminary seedling loading section of the riding type rice transplanter. 同乗用型田植機の予備苗載部の平面図である。FIG. 2 is a plan view of a preliminary seedling loading section of the riding rice transplanter. 本発明の第２実施形態を示す予備苗載部の作用説明用の側面図である。FIG. 7 is a side view for explaining the operation of the preliminary seedling resting section according to the second embodiment of the present invention. 本発明の第３実施形態を示す予備苗載部の作用説明用の側面図である。FIG. 7 is a side view for explaining the operation of a preliminary seedling mounting part showing a third embodiment of the present invention. 本発明の実施形態におけるフロントグリップ部の正面図である。It is a front view of the front grip part in embodiment of this invention.

以下、添付図面を参照して本願の開示する乗用型苗植機の実施形態を詳細に説明する。なお、以下に示す実施形態によりこの発明が限定されるものではない。 DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a riding-type seedling transplanter disclosed in the present application will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments described below.

図１を参照して実施形態に係る乗用型苗植機としての乗用型田植機１の全体構成について説明する。 The overall configuration of a riding-type rice transplanter 1 as a riding-type seedling transplanter according to an embodiment will be described with reference to FIG. 1.

乗用型田植機１は、圃場を走行可能な走行車体２を備える。走行車体２は、左右一対の前輪３と、左右一対の後輪４とを備える。なお、走行車体２は、たとえば、前輪３および後輪４が駆動する四輪駆動となる。走行車体２の後部には、昇降装置２０によって昇降駆動される苗植付部３０が設けられる。 The riding rice transplanter 1 includes a traveling vehicle body 2 that can travel in a field. The traveling vehicle body 2 includes a pair of left and right front wheels 3 and a pair of left and right rear wheels 4. Note that the traveling vehicle body 2 is, for example, a four-wheel drive vehicle in which front wheels 3 and rear wheels 4 are driven. A seedling planting section 30 that is driven up and down by a lifting device 20 is provided at the rear of the traveling vehicle body 2 .

走行車体２は、機体フレーム５と、機体フレーム５上に設けられたエンジンＥと、エンジンＥで発生した動力を駆動輪および苗植付部３０に伝達する動力伝達装置６とを備える。すなわち、動力源であるエンジンＥで発生した動力は、走行車体２を前進または後進させるために使用されるだけでなく、苗植付部３０を駆動するためにも使用される。 The traveling vehicle body 2 includes a body frame 5, an engine E provided on the body frame 5, and a power transmission device 6 that transmits power generated by the engine E to drive wheels and a seedling planting section 30. That is, the power generated by the engine E, which is the power source, is used not only to move the traveling vehicle body 2 forward or backward, but also to drive the seedling planting section 30.

エンジンＥは、左右方向における走行車体２の中央部で、走行車体２に搭乗した作業者が足を載せるフロアステップ７よりも上方に突出した位置に配置される。なお、エンジンＥとしては、ディーゼル機関やガソリン機関などの熱機関が用いられる。フロアステップ７は、前後方向において、走行車体２の前部に設けられる。フロアステップ７は、走行車体２の前部からエンジンＥの後部にかけて設けられる。 The engine E is disposed at a central portion of the traveling vehicle body 2 in the left-right direction, at a position that projects above a floor step 7 on which a worker riding on the traveling vehicle body 2 rests his or her feet. Note that as the engine E, a heat engine such as a diesel engine or a gasoline engine is used. The floor step 7 is provided at the front of the traveling vehicle body 2 in the front-rear direction. The floor step 7 is provided from the front of the vehicle body 2 to the rear of the engine E.

フロアステップ７は、機体フレーム５上に取り付けられる。フロアステップ７のうち、たとえば、後述する操縦席９付近の一部などは作業者の靴などに付着した泥などを圃場に落とせるように、平面視において格子状に形成される。 The floor step 7 is mounted on the fuselage frame 5. For example, a part of the floor step 7 near the cockpit 9, which will be described later, is formed in a grid shape in plan view so that mud and the like adhering to the shoes of workers can be dropped onto the field.

また、フロアステップ７の前部には、フロントステップ７Ｆが設けられ、フロアステップ７の左右外側には左右拡張サイドステップ７Ｓが設けられている。なお、フロアステップ７の後部には、後輪４のフェンダを兼ねるリヤステップ７Ｒが設けられ、左右拡張サイドステップ７Ｓの外側部には、作業者が車体に乗降する乗降ステップ７Ｊが設けられている。 Further, a front step 7F is provided at the front of the floor step 7, and left and right extended side steps 7S are provided on the left and right outer sides of the floor step 7. A rear step 7R that also serves as a fender for the rear wheels 4 is provided at the rear of the floor step 7, and a boarding step 7J for a worker to get on and off the vehicle is provided on the outer side of the left and right extended side steps 7S. .

エンジンＥは、エンジンカバー８に覆われている。エンジンカバー８の上方には操縦席９が設けられる。動力伝達装置６は、エンジンＥから動力が伝達されるベルト式動力伝達部６ａと、エンジンＥからベルト式動力伝達部を介して伝達される動力を変速する変速装置である油圧式無段変速機と、ミッションケース６ｂとを備える。 The engine E is covered by an engine cover 8. A cockpit 9 is provided above the engine cover 8. The power transmission device 6 includes a belt-type power transmission section 6a to which power is transmitted from the engine E, and a hydraulic continuously variable transmission that is a transmission that changes the speed of the power transmitted from the engine E via the belt-type power transmission section. and a mission case 6b.

油圧式無段変速機は、たとえば、ＨＳＴといわれる静油圧式無段変速機である。油圧式無段変速機は、主変速レバーが操作されることで、出力（回転速度）と出力方向（回転方向）とを変更可能である。すなわち、油圧式無段変速機は、回転速度や回転方向を変更することで、走行車体２の前後進や走行速度を変更可能である。 The hydraulic continuously variable transmission is, for example, a hydrostatic continuously variable transmission called HST. A hydraulic continuously variable transmission can change the output (rotational speed) and the output direction (rotational direction) by operating a main shift lever. In other words, the hydraulic continuously variable transmission can change the forward and backward movement and running speed of the traveling vehicle body 2 by changing the rotational speed and rotational direction.

ミッションケース６ｂには、油圧式無段変速機によって変速されたエンジンＥからの動力を各部に伝達する伝動装置が設けられる。ミッションケース６ｂは、走行時や作業時における走行速度を切り替える副変速機構を備える。ミッションケース６ｂは、副変速レバーが操作されると、走行車体２の走行速度を、たとえば、植付作業時の走行速度よりも高速な走行速度、植付作業時における苗植付速度などに切り替え可能である。 The transmission case 6b is provided with a transmission device that transmits power from the engine E whose speed is changed by a hydraulic continuously variable transmission to each part. The transmission case 6b includes an auxiliary transmission mechanism that changes the traveling speed during traveling or work. When the sub-shift lever is operated, the transmission case 6b switches the traveling speed of the traveling vehicle body 2 to, for example, a traveling speed higher than the traveling speed during planting work, a seedling planting speed during planting work, etc. It is possible.

走行車体２は、フロアステップ７上に操縦席９を備える。操縦席９は、作業者が操縦時に着席する座席である。 The traveling vehicle body 2 includes a driver's seat 9 on a floor step 7. The pilot's seat 9 is a seat where an operator sits when operating the vehicle.

走行車体２は、操縦席９の前方に、ステアリングハンドル１０や植付レバーなどを備える。ステアリングハンドル１０は、走行車体２のボンネット１１に設けられ、作業者に操作されることで、走行車体２を操舵するものである。なお、植付レバーは、クラッチレバーであり、ボンネット１１に設けられ、苗植付部３０を昇降させたり、苗植付部３０による苗の植え付けを開始および停止させるために操作するレバーである。 The traveling vehicle body 2 includes a steering handle 10, a planting lever, etc. in front of a driver's seat 9. The steering handle 10 is provided on the bonnet 11 of the vehicle body 2, and is operated by an operator to steer the vehicle body 2. The planting lever is a clutch lever, which is provided on the bonnet 11 and is operated to raise and lower the seedling planting section 30 and to start and stop planting of seedlings by the seedling planting section 30.

また、走行車体２は、主変速レバーと、副変速レバーとを備える。主変速レバー（ＨＳＴレバーともいう）は、走行車体２の前後進および走行速度を変更する場合に操作されるレバーである。副変速レバーは、走行車体２の走行速度を、走行する場所（圃場や路上）に応じた速度に切り替える場合に操作されるレバーである。 The traveling vehicle body 2 also includes a main shift lever and a sub shift lever. The main shift lever (also referred to as the HST lever) is a lever that is operated to change the forward and backward movement of the vehicle body 2 and the traveling speed. The sub-shift lever is a lever that is operated when changing the traveling speed of the traveling vehicle body 2 to a speed corresponding to the place where the vehicle is traveling (field or road).

また、ボンネット１１は、フロアステップ７から上方に突出して設けられ、フロントカバー１１ａに覆われている。ボンネット１１には、たとえば、表示部（メータパネル）が設けられる。表示部は、操縦席９に着席して前方を向いた作業者と対面するように、後下がりに傾斜した表示面を有する。 Further, the bonnet 11 is provided to protrude upward from the floor step 7, and is covered by a front cover 11a. The bonnet 11 is provided with, for example, a display section (meter panel). The display section has a display surface that is tilted backward so as to face the operator who is seated in the pilot's seat 9 and facing forward.

表示部は、たとえば、圃場面に直進の目安となる進行基準線を形成する後述する線引きマーカが走行車体の左右側部に出ていることを検知するマーカセンサ、植付レバーの操作位置を検知する植付レバーポジションセンサ、施肥装置４０の貯留ホッパ４１に貯留された肥料が所定量を下回ったことを検知する肥料切れセンサ、貯留ホッパ４１から送られた肥料が供給経路に詰まったことを検知する肥料詰まりセンサなどの各種センサ類からの情報を表示する。 The display unit includes, for example, a marker sensor that detects the presence of delineation markers (described later) on the left and right sides of the vehicle that form a traveling reference line that serves as a guide for straight forward movement in the field, and a marker sensor that detects the operating position of the planting lever. A planting lever position sensor detects when the fertilizer stored in the storage hopper 41 of the fertilization device 40 falls below a predetermined amount, and a fertilizer out sensor detects when the fertilizer sent from the storage hopper 41 is clogged in the supply path. Displays information from various sensors such as the fertilizer clogging sensor.

乗用型田植機１は、昇降装置２０と、苗植付部３０とを備える。昇降装置２０は、昇降リンク２１を備える。昇降リンク２１は、走行車体２の後部と苗植付部３０とを連結する平行リンクであり、走行車体２の後部のリンクフレームと苗植付部３０とのそれぞれに対して上下方向に回動自在に連結されることで、走行車体２に対して苗植付部３０を昇降可能に連結する。 The riding rice transplanter 1 includes a lifting device 20 and a seedling planting section 30. The lifting device 20 includes a lifting link 21. The elevating link 21 is a parallel link that connects the rear part of the traveling vehicle body 2 and the seedling planting section 30, and rotates in the vertical direction with respect to the link frame at the rear of the traveling vehicle body 2 and the seedling planting section 30, respectively. By being freely connected, the seedling planting section 30 is connected to the traveling vehicle body 2 so as to be movable up and down.

また、昇降装置２０は、油圧式の昇降シリンダ２２を備える。昇降シリンダ２２は、植付レバーが操作されて油圧バルブが切り替えられることで、伸縮動作する。昇降シリンダ２２は、伸縮動作することで昇降リンク２１を駆動して、苗植付部３０を昇降させる。すなわち、昇降シリンダ２２は、植付レバーが操作されることで、苗植付部３０を上昇させた非作業位置、苗植付部３０を下降させた対地作業位置（植付位置）に切り替える。 Further, the elevating device 20 includes a hydraulic elevating cylinder 22. The elevating cylinder 22 expands and contracts when the planting lever is operated and the hydraulic valve is switched. The elevating cylinder 22 moves the elevating link 21 by expanding and contracting, thereby elevating the seedling planting section 30. That is, when the planting lever is operated, the lifting cylinder 22 is switched to a non-working position where the seedling planting section 30 is raised, and a ground working position (planting position) where the seedling planting section 30 is lowered.

苗植付部３０は、上記したように、昇降リンク２１を介して走行車体２の後部に取り付けられる。苗植付部３０は、たとえば、複数の列（条）で苗を植え付けることが可能である。苗植付部３０は、苗載置台３１と、フロート３２と、植付装置３３とを備える。 As described above, the seedling planting section 30 is attached to the rear part of the traveling vehicle body 2 via the elevating link 21. The seedling planting section 30 can, for example, plant seedlings in a plurality of rows (rows). The seedling planting section 30 includes a seedling mounting table 31, a float 32, and a planting device 33.

苗載置台３１は、機体の左右方向において、植付条数分の苗載せ面を有する。各苗載せ面は、上下方向に複数枚のマット苗（土付きマット苗）を載置可能な後下がりの傾斜面である。 The seedling mounting table 31 has a seedling mounting surface equal to the number of planting rows in the left-right direction of the machine body. Each seedling mounting surface is a rear-sloping inclined surface on which a plurality of mat seedlings (mat seedlings with soil) can be placed vertically.

フロート３２は、走行車体２の移動に伴い圃場（水田）の圃場面上を滑走しながら整地する。フロート３２は、機体の左右方向において、機体中央部に配置されるセンターフロートと、センターフロートを挟んで左右方向の外側に配置されるサイドフロートとを備える。なお、図示の例では、乗用型田植機１は、整地装置である整地ロータ１３をさらに備える。 The float 32 levels the ground while sliding over the field (paddy field) as the traveling vehicle body 2 moves. The float 32 includes a center float arranged at the center of the fuselage in the left-right direction of the fuselage, and side floats arranged outside in the left-right direction across the center float. In the illustrated example, the riding rice transplanter 1 further includes a soil leveling rotor 13 that is a soil leveling device.

フロート３２の各フロート（センターフロートおよびサイドフロート）は、圃場面の凹凸に応じて前部が上下動するように、走行車体２に回動自在に取り付けられる。 Each float (center float and side float) of the float 32 is rotatably attached to the traveling vehicle body 2 so that the front part thereof can move up and down according to the unevenness of the field.

植付作業時には、センターフロートの前部の上下動が回動センサによって検知され、回動センサの検知結果に応じて制御部によって昇降シリンダ２２の伸縮動作を制御する油圧バルブを切り替えて苗植付部３０を昇降させ、苗の植え付け深さを調節することができる。 During planting work, a rotation sensor detects the vertical movement of the front part of the center float, and depending on the detection result of the rotation sensor, the control unit switches the hydraulic valve that controls the expansion and contraction of the lifting cylinder 22 to plant seedlings. The planting depth of seedlings can be adjusted by raising and lowering the part 30.

植付装置３３は、苗載置台３１の植付支持フレームによって支持されることで、苗載置台３１の下方に配置される。植付装置３３は、苗載置台３１に載置された苗を圃場に植え付ける。植付装置３３は、植込杆３３１と、ロータリーケース３３２と、植付ケース３３３とを備える。植込杆３３１は、苗載置台３１に載置されたマット苗から苗をとって圃場面に植え付ける。 The planting device 33 is supported by the planting support frame of the seedling table 31 and is disposed below the seedling table 31 . The planting device 33 plants the seedlings placed on the seedling table 31 in the field. The planting device 33 includes a planting rod 331, a rotary case 332, and a planting case 333. The planting rod 331 takes seedlings from the mat seedlings placed on the seedling table 31 and plants them in the field.

ロータリーケース３３２は、植付ケース３３３を回転可能に支持する。ロータリーケース３３２には、植込杆３３１の回転速度を変化させながら植込杆３３１を回転させることが可能な不等速伝動機構が設けられる。植込杆３３１は、ロータリーケース３３２に対する回転角度によって回転速度を変えながら回転する。 The rotary case 332 rotatably supports the planting case 333. The rotary case 332 is provided with an inconstant speed transmission mechanism that can rotate the implantable rod 331 while changing the rotational speed of the implantable rod 331. The implanted rod 331 rotates while changing its rotational speed depending on the rotation angle with respect to the rotary case 332.

乗用型田植機１は、施肥装置４０を備える。施肥装置４０は、圃場に肥料を散布する装置である。乗用型田植機１においては、苗植付部３０によって圃場に苗を植え付けながら、施肥装置４０によって圃場に肥料を散布する。施肥装置４０は、たとえば、走行車体２の後部上方であり操縦席９の後方に設けられる。施肥装置４０は、肥料を貯留する貯留ホッパ４１を備える。 The riding rice transplanter 1 includes a fertilization device 40. The fertilization device 40 is a device that spreads fertilizer on a field. In the riding rice transplanter 1, the seedling planting section 30 plants seedlings in the field, and the fertilization device 40 spreads fertilizer onto the field. The fertilizer application device 40 is provided, for example, above the rear portion of the traveling vehicle body 2 and behind the driver's seat 9. The fertilizer application device 40 includes a storage hopper 41 that stores fertilizer.

乗用型田植機１は、走行車体２の前側における左右側部に各々予備苗載部５０を備える。 The riding rice transplanter 1 is provided with preliminary seedling mounting sections 50 on the left and right sides of the front side of the traveling vehicle body 2, respectively.

ここで、図２及び図３に基づいて、予備苗載部５０の詳細構成を説明する。 Here, the detailed configuration of the preliminary seedling mounting section 50 will be explained based on FIGS. 2 and 3.

予備苗載部５０は、下段の第１積載台５１ａが機体に固定され、上段の第２積載台５１ｂがリンク機構５２にて回動自在に設けられている。 In the preliminary seedling loading section 50, a first loading table 51a at the lower stage is fixed to the body, and a second loading table 51b at the upper stage is rotatably provided by a link mechanism 52.

下段の第１積載台５１ａの上に上段の第２積載台５１ｂが位置する積層状態と下段の第１積載台５１ａの前方に上段の第２積載台５１ｂが位置し直線状に展開した展開状態にリンク機構５２にて姿勢変更できる。 A stacked state in which the second loading platform 51b in the upper tier is located on the first loading platform 51a in the lower tier, and a deployed state in which the second loading platform 51b in the upper tier is located in front of the first loading platform 51a in the lower tier and is unfolded in a straight line. The posture can be changed using the link mechanism 52.

そして、上段の第２積載台５１ｂには、前端側に枢軸５３にて回動自在に支持された回動積載台５１ｃが設けられている。 The upper second loading platform 51b is provided with a rotating loading platform 51c rotatably supported by a pivot 53 on the front end side.

上段の第２積載台５１ｂの上に回動積載台５１ｃが位置する積層状態と上段の第２積載台５１ｂの前方に回動積載台５１ｃが位置し直線状に展開した展開状態に枢軸５３回りに回動積載台５１ｃを回動させて姿勢変更できる。 The stacked state in which the rotating loading platform 51c is located on the second loading platform 51b in the upper tier, and the deployed state in which the rotating loading platform 51c is located in front of the second loading platform 51b in the upper tier and unfolded in a straight line around the pivot 53. The posture can be changed by rotating the rotating loading platform 51c.

即ち、３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃが上下３段となって平面視で重複した積層状態と、リンク機構５２にて上段の第２積載台５１ｂが前方向に回動して下降し直線状に展開し、枢軸５３回りに回動積載台５１ｃを前方に回動させた展開状態（３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃが前後方向に連なり同一平面状になっている状態）に切り替え自在である。 That is, the three first loading tables 51a, the second loading tables 51b, and the rotary loading tables 51c are stacked in three stages, overlapping each other in a plan view, and the second loading tables 51b in the upper stages are stacked by the link mechanism 52. The unfolded state in which the rotating loading platform 51c rotates forward, descends, and unfolds in a straight line, and the rotating loading platform 51c rotates forward around the pivot 53 (three first loading platforms 51a, second loading platform 51b, rotating The loading platform 51c can be freely switched to a state in which the loading tables 51c are arranged in a row in the front-rear direction and are in the same plane.

下段の第１積載台５１ａ及び上段の第２積載台５１ｂは、パレット状であり、上面側に一対の左右側壁５４ａと載置面５４ｂと後部壁５４ｃを備える。なお、前部壁を設けても良い。 The first loading platform 51a on the lower stage and the second loading platform 51b on the upper stage are pallet-shaped and include a pair of left and right side walls 54a, a mounting surface 54b, and a rear wall 54c on the upper surface side. Note that a front wall may be provided.

回動積載台５１ｃは、パレット状であり、上面側及び下面側に各々一対の左右側壁５４ａと載置面５４ｂと後部壁５４ｃを備える。なお、前部壁を設けても良い。 The rotating loading platform 51c is pallet-shaped and includes a pair of left and right side walls 54a, a mounting surface 54b, and a rear wall 54c on the upper and lower surfaces, respectively. Note that a front wall may be provided.

また、上段の第２積載台５１ｂの前部及び後部の内側方には、各々把持部５４ｄが設けられており、作業者は、何れか把持しやすい側の把持部５４ｄを把持して、上段の第２積載台５１ｂを前方下方に移動させて展開状態に切り替えたり、後方上方に移動させて積層状態に切り替えたりする。 In addition, gripping parts 54d are provided on the inner side of the front and rear parts of the second loading platform 51b on the upper stage, and the operator can grip the gripping part 54d on the side that is easier to grip and The second loading platform 51b is moved forward and downward to switch to the unfolded state, or moved backward and upward to switch to the stacked state.

そして、回動積載台５１ｃの載置面５４ｂ先端部には、開口状の把持部５４ｅが設けられており、作業者は、該把持部５４ｅを把持して、回動積載台５１ｃを枢軸５３回りに前方に回動させて展開状態に切り替える。 An open gripping portion 54e is provided at the tip of the mounting surface 54b of the rotary loading table 51c, and the operator grips the gripping portion 54e to move the rotary loading table 51c to the pivot 53. Rotate it forward to switch to the deployed state.

次に、予備苗載部５０を用いた田植作業について説明する。 Next, a rice planting operation using the preliminary seedling mounting section 50 will be explained.

路上での移動や圃場間移動やトラック積載時には、予備苗載部５０を３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃが上下３段となって平面視で重複した積層状態にする。 When moving on the road, moving between fields, or loading onto a truck, the preliminary seedling loading section 50 is made up of three first loading tables 51a, second loading tables 51b, and rotating loading tables 51c, which overlap in plan view. Make it into a layered state.

従って、機体がコンパクトな状態となり、安全に操縦性良く移動でき、また、トラックにコンパクトに積載できる。 Therefore, the aircraft body is compact, and can be moved safely and with good maneuverability, and can be compactly loaded onto a truck.

圃場内で田植作業を行う時には、予備苗載部５０を作業者が把持部５４ｄを把持してリンク機構５２にて上段の第２積載台５１ｂが前方向に回動して下降し直線状に展開し、また、把持部５４ｅを把持して枢軸５３回りに回動積載台５１ｃを前方に回動させた展開状態（３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃが前後方向に連なり同一平面状になっている状態）にする。 When carrying out rice transplanting work in the field, the worker holds the preliminary seedling loading section 50 by the gripping section 54d, and the upper second loading platform 51b rotates forward and lowers in a straight line using the link mechanism 52. In the unfolded state, the rotating loading platform 51c is rotated forward around the pivot shaft 53 by grasping the gripping portion 54e (three first loading platforms 51a, second loading platform 51b, and rotating loading platform 51c). are connected in the front-back direction and form the same plane).

すると、展開状態の予備苗載部５０先端部は、走行車体２前端から前方に大きく突出した状態となる。 Then, the tip of the preliminary seedling mounting section 50 in the unfolded state is in a state where it largely protrudes forward from the front end of the traveling vehicle body 2.

そこで、畦や道路に置いているマット状土付き苗が入った苗箱を乗用型田植機１に搭載する作業は、次のように行なう。 Therefore, the work of loading a seedling box containing matted soil-covered seedlings placed on a ridge or road into the riding rice transplanter 1 is performed as follows.

乗用型田植機１前端部を畦や道路に着けると、展開状態の予備苗載部５０先端部が走行車体２前端から前方に大きく突出した状態であるから、畦や道路と圃場の間に水路等があっても展開状態の予備苗載部５０先端部は畦上に位置する。 When the front end of the riding rice transplanter 1 is attached to a ridge or road, the tip of the preliminary seedling loading section 50 in the unfolded state is in a state that protrudes greatly forward from the front end of the traveling vehicle body 2, so there is no waterway between the ridge or road and the field. Even if there is such a situation, the tip of the preliminary seedling mounting part 50 in the expanded state is located on the ridge.

そこで、畦に居る作業者は、畦に置いている苗箱を展開状態の予備苗載部５０先端部（回動積載台５１ｃ）に載せて３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃが前後方向に連なり同一平面状になっている３つの載置面５４ｂ上を機体側に押して、３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃに順次３つの苗箱を載せる。 Therefore, the worker who is on the ridge places the seedling box placed on the ridge on the tip of the preliminary seedling loading section 50 (rotating loading platform 51c) in the unfolded state, and places the seedling box on the three first loading platforms 51a and second loading platform 51b.・Push the tops of the three loading surfaces 54b, which are connected in the front-rear direction and are in the same plane, toward the aircraft body to load the three rotating loading platforms 51a, 2nd loading platform 51b, and rotating loading platform 51c. Place three seedling boxes in sequence.

機体に搭乗している作業者は、予備苗載部５０後端部（第１積載台５１ａ）に載っている苗箱から苗掬い板でマット状土付き苗を掬い出して苗植付部３０の苗載置台３１に供給し、予備苗載部５０後端部（第１積載台５１ａ）の空の苗箱を取り除く。 An operator on board the aircraft uses a seedling scooping board to scoop out seedlings with mat-like soil from the seedling box placed on the rear end of the preliminary seedling loading section 50 (first loading platform 51a), and transfers them to the seedling planting section 30. The empty seedling box is removed from the rear end of the preliminary seedling mounting section 50 (first loading stage 51a).

畦に居る作業者は、機体に搭乗している作業者が予備苗載部５０後端部（第１積載台５１ａ）の空の苗箱を取り除くたびに、畦に置いている苗箱を展開状態の予備苗載部５０先端部（回動積載台５１ｃ）に載せて３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃが前後方向に連なり同一平面状になっている３つの載置面５４ｂ上を機体側に押す。 The worker on the ridge unfolds the seedling box placed on the ridge every time the worker on board the aircraft removes an empty seedling box from the rear end of the spare seedling loading section 50 (first loading platform 51a). The three first loading tables 51a, second loading tables 51b, and rotating loading tables 51c are arranged in a row in the front and back direction and are on the same plane. Push the tops of the three mounting surfaces 54b toward the aircraft body.

以上の作業を繰り返して、苗植付部３０の苗載置台３１にマット状土付き苗を満載する。 By repeating the above operations, the seedling mounting table 31 of the seedling planting section 30 is loaded with matted seedlings with soil.

そして、機体に搭乗している作業者は、空の苗箱を機体から畦に降ろし、畦に居る作業者は、３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃに３つの苗箱を載せる。 Then, the worker on board the machine lowers the empty seedling box from the machine to the ridge, and the worker in the ridge loads it on the three first loading platform 51a, second loading platform 51b, and rotating loading platform 51c. Place three seedling boxes.

機体に搭乗している作業者は、操縦席９に着座して機体を操縦して畦から離れて圃場の所定の経路を走行して田植作業を行う。 A worker on board the aircraft sits in the cockpit 9 and operates the aircraft to move away from the ridge and travel along a predetermined route in the field to perform rice planting work.

田植作業中に苗載置台３１の苗が残り少なくなれば、機体を停止して、予備苗載部５０の第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃに載せている苗箱から苗掬い板でマット状土付き苗を掬い出して苗植付部３０の苗載置台３１に供給して、田植作業を続行する。 If there are few seedlings left on the seedling platform 31 during rice transplanting, the machine is stopped and the seedling boxes placed on the first loading platform 51a, second loading platform 51b, and rotating loading platform 51c of the preliminary seedling loading section 50 are removed. The seedlings covered with matted soil are scooped out using a seedling scooping board and supplied to the seedling mounting table 31 of the seedling planting section 30 to continue the rice planting work.

以上要するに、予備苗載部５０を機体に固定した第１積載台５１ａに対してリンク機構５２にて積層状態と機体に固定した第１積載台５１ａの前側に位置する直線状に展開した展開状態に姿勢変更できる第２積載台５１ｂを設け、該姿勢変更できる第２積載台５１ｂに積層状態と機体前方に枢軸５３にて回動して直線状に展開した展開状態に姿勢変更できる回動積載台５１ｃを設けたので、前後方向に連なり同一平面状になる３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃを装備した予備苗載部５０であるがリンク機構５２を短く小型の構成とすることができ、機体の小型軽量化が図れる。 In summary, the preliminary seedling loading section 50 is stacked with the link mechanism 52 on the first loading platform 51a fixed to the aircraft body, and the unfolded state in a straight line located on the front side of the first loading platform 51a fixed to the aircraft body. A second loading platform 51b whose attitude can be changed is provided, and the second loading platform 51b whose attitude can be changed is provided with a rotary loading platform whose attitude can be changed between a stacked state and a deployed state in which it is rotated forward on a pivot 53 and deployed in a straight line. Since the table 51c is provided, the preliminary seedling loading section 50 is equipped with three of the first loading table 51a, the second loading table 51b, and the rotating loading table 51c that are connected in the front and back direction and have the same plane. The structure can be short and compact, and the aircraft can be made smaller and lighter.

そして、予備苗載部５０は、小型軽量化が図れた前後方向に連なり同一平面状になる３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃを装備しているので、畦や道路と圃場の間に水路等があって離れていても展開状態の予備苗載部５０先端部は畦上に位置させることができて苗供給作業が効率良く容易に行える。 The preliminary seedling loading section 50 is equipped with three first loading tables 51a, second loading tables 51b, and rotating loading tables 51c that are connected in the front and back direction and have the same plane, which are small and lightweight. Even if there is a waterway or the like between the ridge or the road and the field and the field is separated, the tip of the preliminary seedling loading part 50 in the unfolded state can be positioned on the ridge, and the seedling supply work can be carried out efficiently and easily.

一方、田植作業時に予備苗載部５０の３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃを積層状態で使用する際には、枢軸５３にて回動して姿勢変更する回動積載台５１ｃの上面側及び下面側に各々一対の左右側壁５４ａと載置面５４ｂと後部壁５４ｃを設けたので、回動積載台５１ｃが積層状態にして上下反転していても左右側壁５４ａと載置面５４ｂと後部壁５４ｃがあり苗箱を脱落するような事態を回避して適切に載置できる。 On the other hand, when using the three first loading tables 51a, second loading tables 51b, and rotating loading tables 51c of the preliminary seedling loading section 50 in a stacked state during rice transplanting work, the postures can be changed by rotating on the pivot 53. Since a pair of left and right side walls 54a, a mounting surface 54b, and a rear wall 54c are provided on the top and bottom sides of the rotating loading platform 51c, even if the rotating loading platform 51c is stacked and upside down, the right and left There are a side wall 54a, a mounting surface 54b, and a rear wall 54c, so that the seedling box can be properly placed without falling off.

図４は予備苗載部５０の第２実施形態を示す。 FIG. 4 shows a second embodiment of the preliminary seedling mounting section 50.

即ち、回動積載台５１ｃは、展開状態にした時の上面側に一対の左右側壁５４ａと載置面５４ｂと後部壁５４ｃを設け、下面側にレバー状の把持部５４ｅを設けている。 That is, the rotating loading platform 51c is provided with a pair of left and right side walls 54a, a mounting surface 54b, and a rear wall 54c on the upper surface side when it is in the unfolded state, and a lever-shaped grip portion 54e is provided on the lower surface side.

図５は予備苗載部５０の第３実施形態を示す。 FIG. 5 shows a third embodiment of the preliminary seedling mounting section 50.

即ち、回動積載台５１ｃは、展開状態にした時の上面側に一対の左右側壁５４ａと載置面５４ｂと後部壁５４ｃを設け（なお、前部壁を設けても良い）、下面側に杆体にて構成した空の苗箱を収納する空箱収納枠５５を設けている。 That is, the rotary loading platform 51c is provided with a pair of left and right side walls 54a, a mounting surface 54b, and a rear wall 54c on the upper surface side when it is in the unfolded state (note that a front wall may be provided), and on the lower surface side. An empty box storage frame 55 for storing empty seedling boxes made of rods is provided.

予備苗載部５０の３つの第１積載台５１ａ・第２積載台５１ｂ・回動積載台５１ｃを積層状態にした時に、該回動積載台５１ｃの空箱収納枠５５は、空になった苗箱を挿入する挿入口５５ａが機体後方を向いて開口した状態となり、作業者が苗箱から苗救い板にてマット状土付き苗を掬い出した後の空の苗箱を該挿入口５５ａから挿し込んで空箱収納枠５５に載置収納する。 When the three first loading tables 51a, second loading tables 51b, and rotating loading tables 51c of the preliminary seedling loading section 50 are stacked, the empty box storage frame 55 of the rotating loading tables 51c becomes empty. The insertion port 55a into which the seedling box is inserted is open facing the rear of the machine, and the operator inserts the empty seedling box into the insertion port 55a after scooping out the seedlings with mat-like soil from the seedling box using the seedling relief plate. It is inserted into the box and placed and stored in the empty box storage frame 55.

図１及び図６に示すように、乗用型田植機１は、機体前端部にセンタマスコット６０とフロントグリップ７０を装備する。 As shown in FIGS. 1 and 6, the riding rice transplanter 1 is equipped with a center mascot 60 and a front grip 70 at the front end of the machine body.

センタマスコット６０は、機体から前方に向けて延出した支持フレーム６１の先端部に前後回動自在に枢支軸６２にて基部が枢支されており、機体前方に突出した使用状態と機体後方に傾斜させた収納状態に姿勢変更できる。 The center mascot 60 has a base that is pivoted to the tip of a support frame 61 that extends forward from the fuselage by a pivot shaft 62 so as to be rotatable back and forth, and can be used when protruding toward the front of the fuselage or when used at the rear of the fuselage. The posture can be changed to the stored state where it is tilted.

センタマスコット６０は、機体前方に突出した使用状態にして、操縦席９に着座した作業者が前工程で左右線引きマーカ８０にて圃場に引いた次工程の機体中心線に合わせて機体を操向操作して機体を直進させるための指標である。 The center mascot 60 is in use, protruding toward the front of the machine, and a worker seated in the cockpit 9 steers the machine in line with the center line of the machine for the next process, which was drawn in the field using the left and right line markers 80 in the previous process. This is an indicator for operating the aircraft to make it go straight.

フロントグリップ７０は、支持フレーム６１の先端部に基部を固定したＵ字状パイプ材７０ａの左右上端部に各々左右グリップ７０ｂの基部を挿し込んで上下位置調節自在に固定できる構成である。 The front grip 70 is configured such that the base portions of the left and right grips 70b are inserted into the left and right upper ends of a U-shaped pipe member 70a whose base portion is fixed to the distal end portion of the support frame 61, respectively, and can be fixed in a vertically adjustable manner.

左右グリップ７０ｂには、各々スロットルレバー８０ａと植付部上昇レバー８０ｂが設けられている。 The left and right grips 70b are each provided with a throttle lever 80a and a planting portion lifting lever 80b.

スロットルレバー８０ａ及び植付部上昇レバー８０ｂは、作業者が左右グリップ７０ｂを握ってフロントグリップ７０にて機体前部に体重をかけて機体の転倒を防止した状態で操作できる。 The throttle lever 80a and the planting section raising lever 80b can be operated by the operator while holding the left and right grips 70b and applying his weight to the front of the machine with the front grip 70 to prevent the machine from falling.

スロットルレバー８０ａは、握り操作することによりエンジンＥの回転数を上げることができる。 The rotation speed of the engine E can be increased by gripping and operating the throttle lever 80a.

植付部上昇レバー８０ｂは、握り操作することにより油圧バルブを切り替えて昇降シリンダ２２を伸長させて苗植付部３０を上昇させることができる。 The planting section raising lever 80b can be gripped and operated to switch the hydraulic valve, extend the elevating cylinder 22, and raise the seedling planting section 30.

畦を越えて圃場に出入りする際に、作業者は機体から降りて機体の前側に立ち、センタマスコット６０を機体後方側に傾斜させて邪魔にならないようにし、左右グリップ７０ｂの上下位置調節をして作業者が握って操作し易い高さにする。 When entering or exiting the field by crossing the ridge, the operator gets off the machine, stands at the front of the machine, tilts the center mascot 60 toward the rear of the machine so that it does not get in the way, and adjusts the vertical position of the left and right grips 70b. The height should be set so that it is easy for the operator to grasp and operate it.

この時、フロントグリップ７０は、Ｕ字状で中央に空間があるので、センタマスコット６０を容易に傾斜調節することができる。 At this time, since the front grip 70 is U-shaped and has a space in the center, the center mascot 60 can be easily adjusted in inclination.

そして、機体を微速前進させ、操縦者は左右グリップ７０ｂを握ってフロントグリップ７０に体重をかけて機体が転倒しないようにして、機体の畦越えを行う。 Then, the aircraft is moved forward at a slow speed, and the operator grips the left and right grips 70b and puts his weight on the front grip 70 to prevent the aircraft from falling over, thereby allowing the aircraft to cross over the ridge.

この時、フロントグリップ７０は、Ｔ字状で左右グリップ７０ｂが左右に離間した位置にあり、作業者は容易に該左右グリップ７０ｂを握って機体操作が行える。 At this time, the front grip 70 is T-shaped and the left and right grips 70b are spaced apart from each other to the left and right, and the operator can easily grip the left and right grips 70b to operate the machine.

また、機体の推進力が不足する場合にはスロットルレバー８０ａを握り操作して容易にエンジンＥの回転数を上げることができる。 Further, when the propulsion force of the aircraft is insufficient, the rotation speed of the engine E can be easily increased by gripping and operating the throttle lever 80a.

また、畦を登るときに機体後部の苗植付部３０が接地しそうな時には植付部上昇レバー８０ｂを握り操作して容易に苗植付部３０を任意量上昇させることができる。 Further, when the seedling planting section 30 at the rear of the machine body is about to touch the ground when climbing a ridge, the seedling planting section 30 can be easily raised by an arbitrary amount by grasping and operating the planting section raising lever 80b.

他の実施形態として、植付部上昇レバー８０ｂに換えてデフロックレバーを設けて、必要時にデフロックレバーを握り操作してデフロックできるようにしても良い。 As another embodiment, a differential lock lever may be provided in place of the planting portion raising lever 80b, so that the differential lock can be performed by grasping and operating the differential lock lever when necessary.

他の実施形態として、スロットルレバー８０ａに換えて微速レバーを設けて、必要時に微速レバーの握り操作によりＨＳＴを操作して車速を更に遅い超低速にできるようにしても良い。 As another embodiment, a slow speed lever may be provided in place of the throttle lever 80a, and the HST can be operated by gripping the slow speed lever when necessary to further reduce the vehicle speed to a very low speed.

なお、上記のスロットルレバー８０ａや植付部上昇レバー８０ｂ等の各種レバーは、左右グリップ７０ｂの下方位置に設けても良いし、左右グリップ７０ｂの後方位置に設けても良い。 In addition, various levers, such as the said throttle lever 80a and the planting part raising lever 80b, may be provided in the position below the left and right grips 70b, and may be provided in the rear position of the left and right grips 70b.

また、フロントグリップ７０の前側に折り畳み自在の補助苗載台を設けても良い。 Further, a foldable auxiliary seedling stand may be provided on the front side of the front grip 70.

即ち、支持フレーム６の先端部の前側に機体左右方向の枢支軸で基部が枢支され、前方に向けて水平に延びる苗載せ作用状態と下方に垂れ下がった収納状態に切り替え自在に補助苗載台を設ける。 That is, the base is pivoted on the front side of the tip of the support frame 6 by a pivot shaft in the left-right direction of the machine, and the auxiliary seedling can be freely switched between a seedling loading state that extends horizontally toward the front and a storage state that hangs downward. Set up a stand.

補助苗載台を前方に向けて水平に延びる苗載せ作用状態にすると、畦に置いている苗箱を予備苗載部５０に積み込む際に、機体前部左右中央位置にある補助苗載台に一時的に苗箱を置くことができて、作業性が良い。 When the auxiliary seedling platform is turned forward and placed in the seedling loading state that extends horizontally, when loading seedling boxes placed on the ridge into the preliminary seedling loading section 50, the auxiliary seedling loading platform located at the left and right center of the front of the machine is loaded. You can temporarily place a seedling box and it is easy to work with.

２ 走行車体
３０ 苗植付部
５０ 予備苗載部
５１ａ 第１積載台
５１ｂ 第２積載台
５１ｃ 回動積載台
５２ リンク機構
５３ 枢軸
５４ａ 左右側壁
５４ｂ 載置面
５４ｅ 把持部
５５ 空箱収納部 2 Traveling vehicle body 30 Seedling planting section 50 Spare seedling loading section 51a First loading platform 51b Second loading platform 51c Rotating loading platform 52 Link mechanism 53 Pivot 54a Left and right side walls 54b Placement surface 54e Gripping section 55 Empty box storage section

Claims (5)

走行車体（２）に苗植付部（３０）と予備苗載部（５０）を設けた乗用型苗植機において、該予備苗載部（５０）が機体に固定した第１積載台（５１ａ）に対して、リンク機構（５２）にて積層状態と第１積載台（５１ａ）の前側に位置する直線状に展開した展開状態に姿勢変更できる第２積載台（５１ｂ）を装備し、該第２積載台（５１ｂ）に、積層状態と機体前方に枢軸（５３）にて回動して直線状に展開した展開状態に姿勢変更できる回動積載台（５１ｃ）を設けたことを特徴とする乗用型苗植機。 In a riding-type seedling planting machine in which a seedling planting part (30) and a preliminary seedling loading part (50) are provided on a traveling vehicle body (2), the preliminary seedling loading part (50) is attached to a first loading table (51a) fixed to the machine body. ) is equipped with a second loading platform (51b) that can change its posture between a stacked state and a linearly deployed state located in front of the first loading platform (51a) using a link mechanism (52). The second loading platform (51b) is characterized by being provided with a rotating loading platform (51c) that can change its attitude between a stacked state and a deployed state in which it is rotated on a pivot (53) in front of the fuselage and deployed in a straight line. A riding-type seedling planting machine. 回動積載台（５１ｃ）の上面側及び下面側に各々左右側壁（５４ａ）を設けたことを特徴とする請求項１に記載の乗用型苗植機。 The riding-type seedling transplanter according to claim 1, characterized in that left and right side walls (54a) are provided on the upper surface side and the lower surface side of the rotary loading platform (51c), respectively. 回動積載台（５１ｃ）が展開状態で上面側に左右側壁（５４ａ）を設け、下面側に空箱収納部（５５）を設けたことを特徴とする請求項１に記載の乗用型苗植機。 The riding-type seedling planter according to claim 1, characterized in that when the rotary loading platform (51c) is in an expanded state, left and right side walls (54a) are provided on the upper surface side, and an empty box storage section (55) is provided on the lower surface side. Machine. 回動積載台（５１ｃ）の載置面（５４ｂ）先端部に開口状の把持部（５４ｅ）を設けたことを特徴とする請求項１～請求項３の何れか1項に記載の乗用型苗植機。 The riding type according to any one of claims 1 to 3, characterized in that an opening-shaped gripping part (54e) is provided at the tip of the mounting surface (54b) of the rotating loading platform (51c). Seedling planting machine. 回動積載台（５１ｃ）が展開状態で上面側に左右側壁（５４ａ）を設け、下面側に突出した把持部（５４ｅ）を設けたことを特徴とする請求項１～請求項３の何れか1項に記載の乗用型苗植機。 Any one of claims 1 to 3, characterized in that the rotating loading platform (51c) is provided with left and right side walls (54a) on the upper surface side and a protruding grip part (54e) on the lower surface side in the unfolded state. The riding-type seedling transplanter described in item 1.