JP6766790B2 - Seedling transplanter - Google Patents

Seedling transplanter Download PDF

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JP6766790B2
JP6766790B2 JP2017186413A JP2017186413A JP6766790B2 JP 6766790 B2 JP6766790 B2 JP 6766790B2 JP 2017186413 A JP2017186413 A JP 2017186413A JP 2017186413 A JP2017186413 A JP 2017186413A JP 6766790 B2 JP6766790 B2 JP 6766790B2
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seedling
seedlings
seedling supply
cup
planting
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JP2019058131A (en
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村並 昌実
村並  昌実
大久保 嘉彦
大久保  嘉彦
暢宏 山根
暢宏 山根
幸太 東
幸太 東
昭雄 田▲崎▼
昭雄 田▲崎▼
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Iseki and Co Ltd
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Description

本発明は、野菜苗を畝に移植する苗移植機に関する。 The present invention relates to a seedling transplanter for transplanting vegetable seedlings into ridges.

苗移植機は、作業者が苗を供給する苗供給装置と昇降して畝面に植付穴を形成しながら苗供給装置から供給された苗を植え付ける苗植付具を有し、苗植付具が作成した植付穴に苗を挿入した後に苗の周囲に盛り上げた土を鎮圧する鼓形状の鎮圧輪を備え、鎮圧輪は外周が畝面と平行な状態で盛り土に接触して平らに鎮圧する(たとえば、特許文献1参照)。移植された苗は移植穴の周囲が鎮圧されるので、倒れず安定した姿勢で植生する。 The seedling transplanting machine has a seedling supply device for supplying seedlings by an operator and a seedling planting tool for planting seedlings supplied from the seedling supply device while forming a planting hole on the ridge surface. It is equipped with a drum-shaped compression ring that suppresses the soil raised around the seedling after inserting the seedling into the planting hole created by the tool, and the suppression ring is flattened in contact with the fill with the outer circumference parallel to the ridge surface. Suppress (see, for example, Patent Document 1). Since the area around the transplant hole is suppressed, the transplanted seedlings are vegetated in a stable posture without collapsing.

特開2005−124580号公報Japanese Unexamined Patent Publication No. 2005-124580

苗は畝の法面近くに植え付けられる場合が有るが、その際は左右一対の鎮圧輪の片側が法面上の盛り土を鎮圧することになって、鎮圧輪の外周が法面と平行にならないために盛り土の鎮圧が充分でなく、移植苗が不安定になって法面側に倒れたり苗の根部が地面上に浮き上がって苗の成長が悪くなる。 Seedlings may be planted near the slope of the ridge, but in that case, one side of the pair of left and right compression wheels will suppress the embankment on the slope, and the outer circumference of the suppression ring will not be parallel to the slope. As a result, the embankment is not sufficiently suppressed, and the transplanted seedlings become unstable and fall to the slope side, or the roots of the seedlings rise above the ground and the seedlings grow poorly.

本発明では、畝面に形成する植付穴に苗を投入して植付穴周囲の盛り土を鎮圧輪で鎮圧して苗の植え付けを安定する苗移植機で、苗を畝の法面近くに移植する場合でも法面上の盛り土を効果的に鎮圧して移植苗を安定出来るようにすることが課題である。 In the present invention, a seedling transplanter is used to put seedlings into a planting hole formed on the ridge surface and suppress the embankment around the planting hole with a pressure ring to stabilize the planting of the seedling. Even when transplanting, the challenge is to effectively suppress the embankment on the slope so that the transplanted seedlings can be stabilized.

上記本発明の課題は、次の技術手段により解決される。 The above-mentioned problem of the present invention is solved by the following technical means.

請求項1の発明は、苗供給部(7)に供給された苗を苗植付装置(6)の植付カップ(26)が穿設する植付穴に投入し下方付勢する左右一対の覆土鎮圧輪(8,8)で苗を挟んで周囲の盛り土を鎮圧して苗を畝に植え付ける苗移植機において、
機体外側のブラケット(39)側を円筒状の水平接地面(8a)とすると共に、該水平接地面(8a)よりも機体内側に円錐形状の傾斜面(8b)を形成し、
前記苗供給部(7)を前記苗植付装置(6)の前記植付カップ(26)に苗を供給する複数の苗供給カップ(32)が周回する苗供給回転台(28)とし、前記苗供給回転台(28)の上部に前記苗供給カップ(32)に差し込む苗ガイド(60a)を有する苗ガイド盤(60)を設け、
該苗ガイド(60a)は、前記苗ガイド(60a)の中心点に向かって下方傾斜する円弧状の傾斜案内部(60g)を有しており、該傾斜案内部(60g)は前記苗供給カップ(32)の上側の外周縁部上を覆うと共に、前記傾斜案内部(60g)の下端部が形成する内周縁部は、前記苗供給カップ(32)の内部に入り込む構成とし、前記傾斜案内部(60g)の円弧は、機体上側に向かって凸状になるように形成することを特徴とする苗移植機とする。
請求項2の発明は、前記傾斜案内部(60g)の前記下端部が形成する前記内周縁部は、前記苗ガイド盤(60)を前記苗供給部(7)に装着した状態では、前記苗供給カップ(32)の前記内部に入り込む構成とすることを特徴とする請求項1に記載の苗移植機とする。
請求項3の発明は、前記苗ガイド盤(60)の中央に移植苗載置用の凹み部(60b)を形成し、
該凹み部(60b)の機体下部側である、底面のうち中心部(60j)付近には、凸部(60i)を形成し、
前記凸部(60i)を機体下方に向けて最も突出させたことを特徴とする請求項1に記載の苗移植機とする。
請求項4の発明は、前記覆土鎮圧輪(8,8)を昇降可能に支持する鎮圧輪支持フレーム(38,38)と後輪(5,5)を昇降する左右走行エクステンションケース(10,10)を連係部材(43,43)で連結し、前記左右走行エクステンションケース(10,10)を下方回動して前記後輪(5,5)を降下して主フレーム(15)の後部を上昇させると前記鎮圧輪支持フレーム(38,38)が前記連係部材(43,43)に引かれて前記覆土鎮圧輪(8,8)を上昇させることを特徴とする請求項1から請求項3のいずれか1項に記載の苗移植機とする。
本発明に関連する第1の発明は、苗供給部(7)に供給された苗を苗植付装置(6)の植付カップ(2)(6)が穿設する植付穴に投入し下方付勢する左右一対の覆土鎮圧輪(8,8)で苗を挟んで周囲の盛り土を鎮圧して苗を畝に植え付ける苗移植機において、覆土鎮圧輪(8,8)の外周面を側部の水平接地面(8a)から対向側に向かって小径に変化する傾斜面(8b)に形成した畝鎮圧面(8c)としたことを特徴とする苗移植機とする。
According to the first aspect of the present invention, a pair of left and right seedlings supplied to the seedling supply unit (7) are thrown into a planting hole formed by a planting cup (26) of the seedling planting apparatus (6) and urged downward. In a seedling transplanter in which seedlings are sandwiched between soil-covered pressure rings (8, 8) to suppress the surrounding embankment and plant seedlings in ridges.
The bracket (39) side on the outside of the machine body is a cylindrical horizontal ground contact surface (8a), and a conical inclined surface (8b) is formed inside the machine body from the horizontal ground contact surface (8a).
The seedling supply unit (7) is used as a seedling supply turntable (28) around which a plurality of seedling supply cups (32) for supplying seedlings to the planting cup (26) of the seedling planting device (6) circulate. A seedling guide board (60) having a seedling guide (60a) to be inserted into the seedling supply cup (32) is provided above the seedling supply turntable (28).
The seedling guide (60a) has an arcuate inclined guide portion (60 g) that inclines downward toward the center point of the seedling guide (60a), and the inclined guide portion (60 g) is the seedling supply cup. The inner peripheral edge formed by the lower end of the inclined guide portion (60 g) is configured to enter the inside of the seedling supply cup (32) while covering the upper outer peripheral edge portion of (32). arc (60 g) is a seedling transplantation machine, characterized in that formed to be convex I suited on the machine body.
According to the second aspect of the present invention, the inner peripheral edge portion formed by the lower end portion of the inclined guide portion (60 g) is the seedling in a state where the seedling guide board (60) is attached to the seedling supply portion (7). The seedling transplanter according to claim 1, wherein the rice transplanter is configured to enter the inside of the supply cup (32).
In the invention of claim 3, a recess (60b) for placing a transplanted seedling is formed in the center of the seedling guide board (60).
A convex portion (60i) is formed in the vicinity of the central portion (60j) of the bottom surface, which is the lower portion side of the recessed portion (60b).
The seedling transplanter according to claim 1, wherein the convex portion (60i) is projected most toward the lower side of the machine body.
The invention of claim 4 is a left-right traveling extension case (10, 10) that raises and lowers a pressure wheel support frame (38, 38) that supports the soil covering pressure wheel (8, 8) so as to be able to move up and down and a rear wheel (5, 5). ) Is connected by the linking member (43, 43), the left and right traveling extension cases (10, 10) are rotated downward, the rear wheels (5, 5) are lowered, and the rear portion of the main frame (15) is raised. The first to third aspects of the present invention are characterized in that the compression ring support frame (38, 38) is pulled by the linking member (43, 43) to raise the soil covering compression ring (8, 8). The seedling transplanter according to any one of the items.
In the first invention related to the present invention, the seedlings supplied to the seedling supply unit (7) are put into the planting holes formed by the planting cups (2) and (6) of the seedling planting apparatus (6). In a seedling transplanter in which seedlings are sandwiched between a pair of left and right soil-covering pressure rings (8,8) that are urged downward to suppress the surrounding embankment and the seedlings are planted in ridges, the outer peripheral surface of the soil-covering pressure ring (8,8) is sided. The seedling transplanter is characterized in that it has a ridge suppression surface (8c) formed on an inclined surface (8b) whose diameter changes from the horizontal ground plane (8a) of the portion toward the opposite side.

本発明に関連する第2の発明は、畝鎮圧面(8c)を半球状面としたことを特徴とする本発明に関連する第の発明の苗移植機とする。 The second invention related to the present invention is a rice transplanter of the first invention related to the present invention, characterized in that the ridge suppression surface (8c) is a hemispherical surface.

本発明に関連する第3の発明は、畝鎮圧面(8c)を円筒状の水平接地面(8a)と円錐筒状の傾斜面(8b)とし、傾斜面(8b)の先端を丸めたことを特徴とする本発明に関連する第の発明の苗移植機とする。 In the third invention related to the present invention , the ridge suppression surface (8c) is a cylindrical horizontal ground contact surface (8a) and a conical cylindrical inclined surface (8b), and the tip of the inclined surface (8b) is rounded. The seedling transplanting machine of the first invention related to the present invention, characterized by the above.

本発明に関連する第4の発明は、覆土鎮圧輪(8,8)を昇降可能に支持する鎮圧輪支持フレーム(38,38)と後輪(5,5)を昇降する走行エクステンションケース(10,(10)を連係部材(43,43)で連結し、左右走行エクステンションケース(10,10)を下方回動して後輪(5,5)を降下して主フレーム(15)の後部を上昇させると鎮圧輪支持フレーム(38,38)が連係部材(43,43)に引かれて覆土鎮圧輪(8,8)を上昇させることを特徴とする本発明に関連する第の発明の苗移植機とする。 A fourth invention related to the present invention is a traveling extension case (10) that raises and lowers a pressure wheel support frame (38, 38) that supports the soil covering pressure wheel (8, 8) so as to be able to move up and down and a rear wheel (5, 5). , (10) are connected by the linking member (43, 43), the left and right traveling extension cases (10, 10) are rotated downward, the rear wheels (5, 5) are lowered, and the rear portion of the main frame (15) is moved. The first invention related to the present invention, characterized in that when it is raised, the compression wheel support frame (38, 38) is pulled by the linking member (43, 43) to raise the soil covering compression ring (8, 8). Use as a seedling transplanter.

本発明に関連する第5の発明は、苗供給部(7)を苗植付装置(6)の植付カップ(26)に苗を供給する複数の苗供給カップ(32)が周回する苗供給回転台(28)とし、苗供給回転台(28)の上部に苗供給カップ(32)に差し込む苗ガイド(60a)を有する苗ガイド盤(60)を設けた本発明に関連する第1から4のいずれかの発明の苗移植機とする。 A fifth invention related to the present invention is a seedling supply in which a plurality of seedling supply cups (32) for supplying seedlings to a planting cup (26) of a seedling planting device (6) orbit the seedling supply unit (7). The first to first seedling guide boards (60) related to the present invention are provided as a turntable (28) and a seedling guide board (60) having a seedling guide (60a) to be inserted into a seedling supply cup (32) above the seedling supply turntable (28) . The seedling transplanter according to any one of the inventions of 4.

本発明に関連する第6の発明は、苗ガイド盤(6)の中央に移植苗載置用の凹み部(60b)を形成したことを特徴とする本発明に関連する第の発明の苗移植機とする。 Sixth invention related to the present invention, the seedling guide plate (6 0) central transplant seedling mounting recess of置用(60b) of the fifth invention related to the present invention characterized by forming a Use as a seedling transplanter.

本発明で、畝面上の盛り土は覆土鎮圧輪(8,8)の水平接地面(8a)で鎮圧されるが、左右の覆土鎮圧輪(8,8)の一方が畝の法面に位置する場合は、覆土鎮圧輪(8)の畝鎮圧面(8c)の傾斜面(8b)が法面上の盛り土を効果的に鎮圧して、苗が畝の法面近くに植え付けられても移植苗を安定出来る。
本発明に関連する第1の発明で、畝面上の盛り土は覆土鎮圧輪(8,8)の水平接地面(8a)で鎮圧されるが、左右の覆土鎮圧輪(8,8)の一方が畝の法面に位置する場合は、覆土鎮圧輪(8)の畝鎮圧面(8c)の傾斜面(8b)が法面上の盛り土を効果的に鎮圧して、苗が畝の法面近くに植え付けられても移植苗を安定出来る。
In the present invention, the embankment on the ridge surface is suppressed by the horizontal ground contact surface (8a) of the soil covering suppression ring (8, 8), but one of the left and right soil covering suppression rings (8, 8) is located on the slope of the ridge. If this is the case, the ridge suppression surface (8c) of the soil covering suppression ring (8) effectively suppresses the embankment on the slope, and the seedlings are transplanted even if they are planted near the slope of the ridge. The seedlings can be stabilized.
In the first invention related to the present invention, the embankment on the ridge surface is suppressed by the horizontal ground contact surface (8a) of the soil covering suppression ring (8, 8), but one of the left and right soil covering suppression rings (8, 8). When is located on the slope of the ridge, the inclined surface (8b) of the ridge suppression surface (8c) of the soil covering suppression ring (8) effectively suppresses the embankment on the slope, and the seedlings are on the slope of the ridge. The transplanted seedlings can be stabilized even if they are planted nearby.

本発明に関連する第2の発明で、本発明に関連する第の発明の効果に加えて、半球状面の畝鎮圧面(8c)は、畝の上面や法面上の盛り土を効果的に鎮圧する。 In the second invention relating to the present invention, in addition to the effect of the first invention relating to the present invention, ridges crush face of the hemispherical surface (8c) is effectively fill on top and cuttings ridges Suppress.

本発明に関連する第3の発明で、本発明に関連する第の発明の効果に加えて、畝鎮圧面(8c)の円筒状の水平接地面(8a)は、畝上面の盛り土を、円錐筒状の傾斜面(8b)は、法面上の盛り土を効果的に鎮圧する。また、苗に接触する可能性のある傾斜面(8b)の先端が丸まっていることで、苗を傷付けることが無い。 In the third invention relating to the present invention, in addition to the effect of the first invention relating to the present invention, a cylindrical horizontal ground plane ridge suppression surface (8c) (8a) is a fill of ridges top, The conical sloping surface (8b) effectively suppresses the embankment on the slope. Further, since the tip of the inclined surface (8b) that may come into contact with the seedling is rounded, the seedling is not damaged.

本発明に関連する第4の発明で、本発明に関連する第の発明の効果に加えて、走行エクステンションケース(10,10)を下方へ回動して主フレーム(15)の後部を浮かせる移動走行や旋回時には、鎮圧輪支持フレーム(38,38)が連係部材(43,43)に引かれて左右覆土鎮圧輪(8,8)を地面から浮き上がらせるので、主フレーム(15)の移動が容易になり、覆土鎮圧輪(8,8)を損傷することが無い。 In a fourth invention relating to the present invention, in addition to the effect of the first invention relating to the present invention, floating the rear portion of the main frame (15) running extension case (10, 10) to pivot downward During moving or turning, the compression wheel support frame (38, 38) is pulled by the linking member (43, 43) to lift the left and right soil covering compression wheels (8, 8) from the ground, so that the main frame (15) moves. Is easy, and the soil covering pressure ring (8, 8) is not damaged.

本発明に関連する第5の発明で、本発明に関連する第1から4のいずれかの発明の効果に加えて、苗供給カップ(32)に供給される苗が苗ガイド盤(60)の苗ガイド(60a)でスムースに誘導されて苗供給が安定する。 In a fifth invention relating to the present invention, the first relating to the present invention, in addition to the effects of the fourth any one of the seedlings to be supplied to the seedling supply cup (32) seedlings guide plate (60) The seedling supply is stabilized by being smoothly guided by the seedling guide (60a).

本発明に関連する第6の発明で、本発明に関連する第の発明の効果に加えて、作業者は予備苗を苗ガイド盤(60)の凹み部(60b)に置いておくことで、余裕を持って苗を苗供給カップ(32)に供給する作業を行える。 In the sixth aspect of relating to the present invention, in addition to the effects of the fifth invention relating to the present invention, the operator that keep spare seedlings recess seedlings guide plate (60) (60b) The work of supplying the seedlings to the seedling supply cup (32) can be performed with a margin.

苗移植機の右側面図である。It is a right side view of a rice transplanter. 苗移植機の平面図である。It is a top view of the seedling transplanter. 覆土鎮圧輪を示す一部の背面図である。It is a partial rear view which shows the soil cover suppression ring. 別実施例の覆土鎮圧輪の側面図である。It is a side view of the soil covering pressure ring of another embodiment. (a)苗ガイド板の平面図 (b)苗ガイド板の側面図(A) Plan view of seedling guide plate (b) Side view of seedling guide plate (a)苗ガイド板を装着する前の苗供給装置の要部側面図 (b)苗ガイド板を装着した苗供給装置の側面図(A) Side view of the main part of the seedling supply device before mounting the seedling guide plate (b) Side view of the seedling supply device equipped with the seedling guide plate

以下、本発明の実施形態を図面に示す実施例を参照しながら説明する。なお、実施例の説明においては、機体の前進方向に向かって左右方向をそれぞれ左、右といい、前進方向を前、後進方向を後というが、本発明の構成を限定するものでは無い。 Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings. In the description of the embodiment, the left and right directions are referred to as left and right, respectively, the forward direction is referred to as forward, and the reverse direction is referred to as backward toward the forward direction of the aircraft, but the configuration of the present invention is not limited.

図1は、苗移植機の一例として歩行型のたばこ苗移植機を示すものであり、この歩行型苗移植機は、主として前部にエンジン2及び主伝動ケース3を搭載した左右フレーム14と走行車輪としての左右一対の前輪4,4及び後輪5,5と後部に苗植付装置6、苗供給部7、覆土鎮圧輪8及び操縦ハンドル9とを備えて構成される。この苗移植機は、機体が圃場内の畝をまたぐように前記前輪4,4及び後輪5,5が畝間を走行し、畝の上面の左右中央に前記苗植付装置6によりたばこ苗を植付けていくようになっている。 FIG. 1 shows a walking type tobacco seedling transplanting machine as an example of a seedling transplanting machine, and this walking type seedling transplanting machine mainly runs with a left and right frame 14 equipped with an engine 2 and a main transmission case 3 in the front part. It is composed of a pair of left and right front wheels 4, 4 and rear wheels 5, 5 as wheels, and a seedling planting device 6, a seedling supply unit 7, a soil covering suppression wheel 8, and a steering handle 9 at the rear. In this seedling transplanter, the front wheels 4, 4 and the rear wheels 5, 5 run between the ridges so that the machine body straddles the ridges in the field, and the tobacco seedlings are placed in the center of the left and right of the upper surface of the ridges by the seedling planting device 6. It is supposed to be planted.

主伝動ケース3の左右端には該主伝動ケース3に対して回動可能な走行エクステンションケース10,10を左右それぞれ設け、前記左右の走行エクステンションケース10,10内に走行チェーン伝動機構を設けている。従って、前記エンジン2から入力される主伝動ケース3内の動力を走行チェーン伝動機構で伝動する構成となっている。走行エクステンションケース10,10の回動先端部の左右内側には走行車輪である左右一対の後輪5,5をそれぞれ取り付け、この左右一対の後輪5,5の駆動により機体が走行するようになっている。従って、主伝動ケース3は、走行車輪としての後輪5,5に伝動する伝動装置となっている。一方、エンジン載置台の下部には左右方向に延びる前輪支持フレーム12を前後方向のローリング軸13回りに回動可能に設け、この前輪支持フレーム12の左右両端部に前輪4,4を取り付けた構成としている。 Traveling extension cases 10 and 10 that can rotate with respect to the main transmission case 3 are provided on the left and right ends of the main transmission case 3, respectively, and traveling chain transmission mechanisms are provided in the left and right traveling extension cases 10 and 10. There is. Therefore, the power in the main transmission case 3 input from the engine 2 is transmitted by the traveling chain transmission mechanism. A pair of left and right rear wheels 5 and 5, which are traveling wheels, are attached to the left and right inside of the rotating tip portions of the traveling extension cases 10 and 10, respectively, so that the aircraft travels by driving the pair of left and right rear wheels 5 and 5. It has become. Therefore, the main transmission case 3 is a transmission device that transmits to the rear wheels 5 and 5 as traveling wheels. On the other hand, a front wheel support frame 12 extending in the left-right direction is rotatably provided around a rolling shaft 13 in the front-rear direction at the lower part of the engine mount, and front wheels 4 and 4 are attached to both left and right ends of the front wheel support frame 12. It is said.

前記左右の走行エクステンションケース10,10は、主伝動ケース3の駆動軸で左右横方向に移動調整(後輪5,5も同時に移動)する構成であり、この左右方向の移動により後輪5,5のトレッド調節を行う構成となっている。また、前輪支持フレーム12は左右伸縮可能に設けられており、左右の前輪4,4のトレッド調節も行えるようになっている。 The left and right traveling extension cases 10 and 10 have a configuration in which the drive shaft of the main transmission case 3 adjusts the movement in the left-right lateral direction (the rear wheels 5 and 5 also move at the same time), and the rear wheels 5 and 5 are moved by the left-right movement. It is configured to adjust the tread of 5. Further, the front wheel support frame 12 is provided so as to be expandable and contractible to the left and right, so that the treads of the left and right front wheels 4 and 4 can be adjusted.

前記左右フレーム14の後部には、右寄りの位置に延びる主フレーム15を設けている。該主フレーム15の後端部には操縦ハンドル9を設け、この操縦ハンドル9が主フレーム15を介して前記左右フレーム14に支持された構成となっている。また、主伝動ケース3の後部で左右方向の中央には、油圧昇降シリンダ16を設けている。この油圧昇降シリンダ16は、主伝動ケース3に固着された油圧切替バルブ部17に固着して設けられ、主伝動ケース3に固着された油圧ポンプからの油圧を切り替える前記油圧切替バルブ部17に備えられた昇降操作バルブを操作することにより作動するようになっている。前記油圧昇降シリンダ16のシリンダロッド端には左右に延びる横杆19を設け、この横杆19の左右端部にそれぞれ後輪昇降ロッド20,21を枢着し該ロッド20,21の他端をそれぞれの走行エクステンションケース10,10に固着された上側アーム10a,10aに枢着して、前記横杆19と走行エクステンションケース10,10とが連結された構成となっている。従って、前記油圧昇降シリンダ16の伸縮により前記横杆19、前記後輪昇降ロッド20,21を介して主伝動ケース3の左右の出力軸回りに走行エクステンションケース10,10が回動され、該走行エクステンションケース10,10の回動により後輪5,5が上下して機体が昇降する構成となっている。 A main frame 15 extending to a right position is provided at the rear portion of the left and right frames 14. A steering handle 9 is provided at the rear end of the main frame 15, and the steering handle 9 is supported by the left and right frames 14 via the main frame 15. Further, a hydraulic elevating cylinder 16 is provided at the center in the left-right direction at the rear of the main transmission case 3. The hydraulic pressure elevating cylinder 16 is provided on the hydraulic pressure switching valve portion 17 fixed to the main transmission case 3, and is provided in the hydraulic pressure switching valve portion 17 for switching the hydraulic pressure from the hydraulic pump fixed to the main transmission case 3. It is operated by operating the lift operation valve. Horizontal rods 19 extending to the left and right are provided at the cylinder rod ends of the hydraulic elevating cylinder 16, and rear wheel elevating rods 20 and 21 are pivotally attached to the left and right ends of the horizontal rods 19, respectively, and the other ends of the rods 20 and 21 are attached. The horizontal rod 19 and the traveling extension cases 10 and 10 are connected to each other by pivotally attaching to the upper arms 10a and 10a fixed to the traveling extension cases 10 and 10, respectively. Therefore, due to the expansion and contraction of the hydraulic elevating cylinder 16, the traveling extension cases 10 and 10 are rotated around the left and right output shafts of the main transmission case 3 via the horizontal rod 19 and the rear wheel elevating rods 20 and 21, and the traveling. The rear wheels 5 and 5 move up and down due to the rotation of the extension cases 10 and 10, and the machine body moves up and down.

また、左側の前記後輪昇降ロッド20が伸縮するように該ロッド20の中途部に油圧ポンプからの油圧により作動する水平用油圧シリンダ22を設けており、該水平用油圧シリンダ22の伸縮により右側の後輪5の上下位置に対して左側の後輪5を上下させて、畝の谷部の凹凸に関係なく機体を左右水平に維持できるようになっている。尚、主伝動ケース3の右側には振り子式の左右傾斜センサが設けられて、この左右傾斜センサの検出により油圧切替バルブ部17に備えられた水平操作バルブを介して前記水平用油圧シリンダ22を作動させ機体を左右水平に維持する構成となっている。 Further, a horizontal hydraulic cylinder 22 that operates by hydraulic pressure from a hydraulic pump is provided in the middle of the rod 20 so that the rear wheel elevating rod 20 on the left side expands and contracts, and the right side is provided by the expansion and contraction of the horizontal hydraulic cylinder 22. By moving the left rear wheel 5 up and down with respect to the vertical position of the rear wheel 5, the aircraft can be maintained horizontally regardless of the unevenness of the valley of the ridge. A pendulum type left / right tilt sensor is provided on the right side of the main transmission case 3, and the horizontal hydraulic cylinder 22 is moved via a horizontal operation valve provided in the hydraulic switching valve portion 17 by detecting the left / right tilt sensor. It is configured to operate and maintain the aircraft horizontally on the left and right.

前記苗植付装置6は、一株の苗を圃場に植付けるべく主伝動ケース3内からの動力が前記主伝動ケース3の後側に設けた植付伝動ケース24及び該植付伝動ケース24に固着した苗植付装置駆動ケース25を介して伝達され作動するようになっている。前記苗植付装置6は、植付カップ26と該植付カップ26を昇降させるべく作動する苗植付具作動機構27とで構成される。 The seedling planting device 6 is a planting transmission case 24 and a planting transmission case 24 in which power from the main transmission case 3 is provided behind the main transmission case 3 in order to plant a single seedling in the field. It is transmitted through the seedling planting device drive case 25 fixed to the plant and operates. The seedling planting device 6 includes a planting cup 26 and a seedling planting tool operating mechanism 27 that operates to raise and lower the planting cup 26.

また、前記苗供給部7は、前記苗植付装置6の上側に設けられ、一株の苗を前記苗植付装置6に順次供給する苗供給回転台28を備えて構成されている。前記苗供給回転台28は、前記植付伝動ケース24からの伝動により前後に往復作動するクランクロッド29、一方向クラッチ機構30を介して上下方向の回転軸31回りに回転駆動するようになっている。また、苗供給回転台28は、前記回転軸31を中心とする円周に沿って所定間隔毎に複数の苗供給カップ32…が設けられた構成となっている。該苗供給カップ32…は該カップ32…の底面32a…が開閉可能に設けられると共に、苗供給カップ32…の下方には苗供給回転台28の回転により苗供給カップ32…が所定の位置に来たときのみ該カップ32…の底面が開くように設けられた苗供給カップ開閉ガイド33が機体側に固着して設けられている。従って、苗供給回転台28の回転により苗供給カップ32…が所定の位置に来ると、苗供給カップ32…の底面32a…が開いて苗供給カップ32…内のポット苗を下方の植付カップ26に落下供給し、更に苗供給回転台28が回転し苗供給カップ32…が前記所定の位置から外れると苗供給カップ32…の底面32a…が閉じるようになっている。 Further, the seedling supply unit 7 is provided on the upper side of the seedling planting device 6, and includes a seedling supply turntable 28 that sequentially supplies a single seedling to the seedling planting device 6. The seedling supply turntable 28 is rotationally driven around a vertical rotation shaft 31 via a crank rod 29 that reciprocates back and forth by transmission from the planting transmission case 24 and a one-way clutch mechanism 30. There is. Further, the seedling supply turntable 28 has a configuration in which a plurality of seedling supply cups 32 ... Are provided at predetermined intervals along the circumference centered on the rotation shaft 31. The seedling supply cup 32 ... Is provided so that the bottom surface 32a ... of the cup 32 ... Can be opened and closed, and the seedling supply cup 32 ... Is placed at a predetermined position below the seedling supply cup 32 ... by rotation of the seedling supply turntable 28. A seedling supply cup opening / closing guide 33 provided so that the bottom surface of the cup 32 ... opens only when it comes is fixed to the machine body side. Therefore, when the seedling supply cup 32 ... comes to a predetermined position due to the rotation of the seedling supply turntable 28, the bottom surface 32a ... of the seedling supply cup 32 ... is opened and the pot seedling in the seedling supply cup 32 ... is placed in the lower planting cup. When the seedling supply turntable 28 is rotated and the seedling supply cup 32 ... is removed from the predetermined position, the bottom surface 32a ... of the seedling supply cup 32 ... is closed.

各苗供給カップ32の上側には、苗ガイド60aを苗供給カップ32の供給口に差し込んだ苗ガイド盤60を置き、苗供給カップ32と共に周回するようにしている。この苗ガイド盤60を設けることで、苗の根部が苗供給カップ32に滑り込み易くなる。なお、図5の如く、苗ガイド盤60の中央に凹み部60bを設けて予備苗を置けるようにすると苗供給作業が楽になる。凹み部60bにはドリンクカップを置いておくことも出来る。 On the upper side of each seedling supply cup 32, a seedling guide board 60 in which the seedling guide 60a is inserted into the supply port of the seedling supply cup 32 is placed so as to circulate together with the seedling supply cup 32. By providing the seedling guide board 60, the root of the seedling can easily slip into the seedling supply cup 32. As shown in FIG. 5, if a recess 60b is provided in the center of the seedling guide board 60 so that spare seedlings can be placed, the seedling supply work becomes easier. A drink cup can be placed in the recess 60b.

上記苗ガイド盤60を装着した苗供給部7について、詳細に説明する。 The seedling supply unit 7 to which the seedling guide board 60 is attached will be described in detail.

前記苗供給部7を構成する前記苗供給カップ32は、苗を投入及び落下させるべく、上方及び下方に円形の空間部が形成されており、上方が下方よりも大径であり、且つ下方の空間部は上方の空間部の径の内部に位置する構成である。 The seedling supply cup 32 constituting the seedling supply unit 7 has circular space portions formed above and below in order to put in and drop seedlings, and the upper part has a larger diameter than the lower part and the lower part has a lower diameter. The space portion is configured to be located inside the diameter of the space portion above.

前記複数の苗供給カップ32は、苗供給回転台28の外周寄りに環状に立接されるものであるので、苗供給回転台28の中心部付近、即ち複数の苗供給カップ32が形成する円の内周部分には、円形の空間部が生じることになる。 Since the plurality of seedling supply cups 32 are annularly contacted near the outer periphery of the seedling supply turntable 28, the vicinity of the center of the seedling supply turntable 28, that is, a circle formed by the plurality of seedling supply cups 32. A circular space will be created in the inner peripheral portion of the.

この円形空間部があることにより、作業者が苗供給カップ32に苗を投入する際、投入位置がずれて苗供給カップ32内でなく円形空間部の内部に苗が入り込み、苗が苗植付装置6に投入されず、苗が植え付けられない状態、所謂欠株が生じる問題がある。 Due to the presence of this circular space, when a worker puts seedlings into the seedling supply cup 32, the throwing position shifts and the seedlings enter the inside of the circular space instead of inside the seedling supply cup 32, and the seedlings are planted. There is a problem that a state in which seedlings are not planted because they are not put into the device 6, so-called stock shortage occurs.

また、苗の下部側、即ち根部側は苗供給カップ32内に入り込んでいても、苗の上部側、即ち葉部側が苗供給カップ32の外周縁部に引っ掛かり、落下すべき位置で苗が落下せず、苗が植え付けられない状態、所謂欠株が生じる問題がある。 Further, even if the lower side of the seedling, that is, the root side is inside the seedling supply cup 32, the upper side of the seedling, that is, the leaf side is caught by the outer peripheral edge of the seedling supply cup 32, and the seedling falls at the position where it should fall. There is a problem that seedlings cannot be planted, so-called stock shortages occur.

上記の問題の発生を防止すべく、図5(a)(b)及び図6(a)(b)に示すとおり、苗供給部7の上部に、円盤形状、断面視では皿形状の苗ガイド盤60を載置する。該苗ガイド盤60は、機体下端側の径が機体上端側の径よりも大径であり、断面視における外周縁部は、上端側から下端側に向かう円弧状となっている。機体下端側の径は、少なくとも前記複数の苗供給カップ32が形成する円の径よりも大径とし、各苗供給カップ32の外周縁部は前記苗ガイド盤60に覆われる構成とする。 In order to prevent the above problems from occurring, as shown in FIGS. 5 (a) and 5 (b) and 6 (a) and 6 (b), a disk-shaped seedling guide and a dish-shaped seedling guide in cross-sectional view are placed on the upper part of the seedling supply unit 7. Place the board 60. The seedling guide board 60 has a diameter on the lower end side of the machine body larger than the diameter on the upper end side of the machine body, and the outer peripheral edge portion in the cross-sectional view has an arc shape from the upper end side to the lower end side. The diameter of the lower end side of the machine body shall be at least larger than the diameter of the circle formed by the plurality of seedling supply cups 32, and the outer peripheral edge of each seedling supply cup 32 shall be covered with the seedling guide board 60.

前記苗ガイド盤60には、円周方向における前記複数の苗供給カップ32の配置間隔と略同じ間隔で、投入される苗が入り込むための円形の苗ガイド60aが、前記複数の苗供給カップ32と同数形成される。該苗ガイド60aは、苗ガイド60a自体の中心点で且つ下方に向かう円弧状の傾斜案内部60gを有しており、該傾斜案内部60gは苗供給カップ32の上側の外周縁部上を覆うと共に、傾斜案内部60gの下端部が形成する内周縁部は、前記苗供給カップ32の内部に入り込む構成とする。なお、傾斜案内部60gの円弧は、機体上側に向かうように形成する。 The seedling guide board 60 is provided with circular seedling guides 60a for entering seedlings to be introduced at substantially the same intervals as the arrangement intervals of the plurality of seedling supply cups 32 in the circumferential direction. Is formed in the same number as. The seedling guide 60a has an arc-shaped inclined guide portion 60g that is the center point of the seedling guide 60a itself and is directed downward, and the inclined guide portion 60g covers the upper outer peripheral edge portion of the seedling supply cup 32. At the same time, the inner peripheral edge portion formed by the lower end portion of the inclined guide portion 60 g is configured to enter the inside of the seedling supply cup 32. The arc of the tilt guide portion 60 g is formed so as to face the upper side of the machine body.

上述の構成を断面視で説明すると、苗ガイド60aの一側端部(外周縁部寄りの端部)と他側端部(中心点寄りの端部)は苗供給カップ32の両側端部上に各々位置し、苗ガイド60aの一側端部と他側端部には、苗供給カップ32の内部に入り込む円弧状の傾斜案内部60gを各々形成し、該傾斜案内部60gの下端部は、苗供給カップ32の内周部に位置する構成となる。なお、苗ガイド盤60の上端面は、略平坦な形状である。 Explaining the above configuration in cross section, one side end portion (end portion near the outer peripheral edge portion) and the other side end portion (end portion near the center point) of the seedling guide 60a are on both side ends of the seedling supply cup 32. An arcuate inclined guide portion 60g that enters the inside of the seedling supply cup 32 is formed at one side end portion and the other side end portion of the seedling guide 60a, respectively, and the lower end portion of the inclined guide portion 60g is formed. , The structure is located on the inner peripheral portion of the seedling supply cup 32. The upper end surface of the seedling guide board 60 has a substantially flat shape.

これにより、苗供給カップ32の外周縁部の上部が傾斜案内部60gに覆われるので、苗の葉部が苗供給カップ32の外周縁部や苗ガイド60aに引っ掛かることを防止でき、苗を確実に苗供給カップ32に投入し、所定の位置で苗植付装置6に落下させることができる。 As a result, the upper portion of the outer peripheral edge of the seedling supply cup 32 is covered with the inclined guide portion 60 g, so that the leaf portion of the seedling can be prevented from being caught by the outer peripheral edge of the seedling supply cup 32 or the seedling guide 60a, and the seedling can be reliably secured. Can be thrown into the seedling supply cup 32 and dropped into the seedling planting device 6 at a predetermined position.

また、傾斜案内部60gの円弧面が機体上側を向くことにより、苗が傾斜案内部60g上を滑って苗供給カップ32に入り込みやすくなるので、確実に苗供給カップ32に苗が投入され、苗植付装置6に所定のタイミングで苗が入り込まず、苗が植え付けられない箇所が発生することが防止される。これにより、手作業で苗を植え付ける作業が不要となり、作業者の労力が軽減される。 Further, since the arc surface of the inclined guide portion 60 g faces the upper side of the machine body, the seedlings can easily slip on the inclined guide portion 60 g and enter the seedling supply cup 32, so that the seedlings are surely put into the seedling supply cup 32 and the seedlings are seeded. It is possible to prevent the seedlings from entering the planting device 6 at a predetermined timing and preventing the seedlings from being planted in some places. This eliminates the need for manual planting of seedlings and reduces the labor of workers.

また、苗の根部に付着した土は、苗供給カップ32内に苗と共に入り込むか、あるいは苗ガイド盤60上に溜まるので、駆動系を有する苗供給回転台28に土が付着しにくくなり、土の除去作業が容易になる。 Further, the soil adhering to the roots of the seedlings enters the seedling supply cup 32 together with the seedlings or accumulates on the seedling guide board 60, so that the soil does not easily adhere to the seedling supply turntable 28 having a drive system, and the soil Easy to remove.

さらに、前記苗ガイド盤60のうち、中心部60jから複数の苗ガイド60aが形成する円の内周までの範囲には空間部を形成しないが、中心部60jから複数の苗ガイド60aが形成する円の内周よりも内側までの範囲で、機体下側に向かう凹み部60bを形成する。該凹み部60bの機体下部側、即ち底面のうち中心部60j付近には、凸部60iを形成する。 Further, in the seedling guide board 60, a space portion is not formed in the range from the central portion 60j to the inner circumference of the circle formed by the plurality of seedling guides 60a, but the plurality of seedling guides 60a are formed from the central portion 60j. A recess 60b facing the lower side of the machine body is formed in the range from the inner circumference of the circle to the inside. A convex portion 60i is formed on the lower side of the machine body of the recessed portion 60b, that is, in the vicinity of the central portion 60j of the bottom surface.

なお、前記中心部60jには上下方向で且つ凸部60iを貫通する螺子穴を形成し、苗ガイド盤60を苗供給回転台28の回転に共回りするように装着する構成とする。このとき、凸部60iから苗供給回転台28の中心部の上面までは長い上下間隔が空いているので、取付ボルトは相応の長さのものを用いる。 A screw hole is formed in the central portion 60j in the vertical direction and penetrates the convex portion 60i, and the seedling guide board 60 is mounted so as to rotate together with the rotation of the seedling supply turntable 28. At this time, since there is a long vertical gap from the convex portion 60i to the upper surface of the central portion of the seedling supply turntable 28, a mounting bolt having an appropriate length is used.

上記のとおり、複数の苗ガイド60aが形成する円の内周には空間部を形成しないことにより、作業者が苗供給カップ32に苗を投入し損なっても、苗供給カップ32よりも上方で、且つ苗ガイド60aに簡単に移動させられる位置に苗が留まるので、苗の投入ミスにより苗が植え付けられない箇所が発生することが防止される。 As described above, by not forming a space on the inner circumference of the circle formed by the plurality of seedling guides 60a, even if the worker fails to put the seedlings into the seedling supply cup 32, the space is above the seedling supply cup 32. Moreover, since the seedlings stay at a position where they can be easily moved to the seedling guide 60a, it is possible to prevent some places where the seedlings cannot be planted due to a mistake in inserting the seedlings.

また、機体上部側には凹み部60bを形成することにより、苗の根鉢の徒長部分を切断する鋏や、飲料のボトル等の作業道具を安定的に置くことができる。 Further, by forming the recessed portion 60b on the upper side of the machine body, it is possible to stably place work tools such as scissors for cutting the legginess portion of the root pot of seedlings and a bottle of beverage.

あるいは、苗箱Bから取り出した複数の苗を凹み部60bに載置し、凹み部60bから苗を苗供給カップ32に一つずつ投入してもよい。これにより、苗箱Bから苗を一つずつ取り出して苗供給カップ32に投入するよりも、作業者の腕の移動範囲を小さく抑えることができるので、作業者が疲れにくくなる。 Alternatively, a plurality of seedlings taken out from the seedling box B may be placed in the recessed portion 60b, and the seedlings may be put into the seedling supply cup 32 one by one from the recessed portion 60b. As a result, the movement range of the worker's arm can be suppressed to a smaller size than when the seedlings are taken out one by one from the seedling box B and put into the seedling supply cup 32, so that the worker is less likely to get tired.

また、凸部60iを機体下方に向けて最も突出させることにより、苗ガイド盤60を装着する長い取付ボルトを苗ガイド盤60で支持する上下長さが長くなるので、取付ボルトが取り付けやすくなる。 Further, by projecting the convex portion 60i most toward the lower side of the machine body, the vertical length of supporting the long mounting bolt for mounting the seedling guide board 60 by the seedling guide board 60 becomes long, so that the mounting bolt can be easily mounted.

なお、苗ガイド盤60aは、重量物を積載するものではなく、また強い荷重を受け続けるものではなく、さらに重いと苗供給回転台28の回転に不要な負荷を生じさせる原因となるので、軽量な樹脂で構成することが望ましい。その際、表面に凹凸が生じず滑らかになりやすい素材を用いると、苗が苗ガイド60aから苗供給カップ32に入り込みやすくなる。 The seedling guide board 60a is lightweight because it does not load heavy objects and does not continue to receive a strong load, and if it is heavier, it causes an unnecessary load for the rotation of the seedling supply turntable 28. It is desirable to use a resin. At that time, if a material that does not have irregularities on the surface and tends to be smooth is used, the seedlings can easily enter the seedling supply cup 32 from the seedling guide 60a.

苗供給回転台28の前側には、セルトレイに育苗された苗をセルトレイごと載置する苗載置枠34を設けている。この苗載置枠34は、植付伝動ケース24から上方に延びる左右の苗載置枠支持フレーム35に取り付けられている。 On the front side of the seedling supply turntable 28, a seedling placing frame 34 for placing the seedlings raised in the cell tray together with the cell tray is provided. The seedling placement frame 34 is attached to the left and right seedling placement frame support frames 35 extending upward from the planting transmission case 24.

前記植付カップ26は、前後方向に2分割して下部を開閉する構成となっており、苗供給回転台28の苗供給カップ32…から受け継いだ一株のポット苗を収容した状態で下降し、苗植付位置Cで下部を前後に開いて圃場に植付穴を形成すると共に該植付穴に苗を供給して植え付けるようになっている。また、前記植付カップ26の前方には圃場面感知プレート36を設けている。該圃場面感知プレート36は左右方向の回動支点軸36a回りに回動可能に設けられ、接地することによる該プレート36の回動に伴って苗植付装置6により所定の植付深さとなるように後輪5,5を昇降するようになっている。 The planting cup 26 is divided into two in the front-rear direction to open and close the lower part, and descends in a state of accommodating one pot seedling inherited from the seedling supply cup 32 ... of the seedling supply turntable 28. At the seedling planting position C, the lower part is opened back and forth to form a planting hole in the field, and seedlings are supplied to the planting hole for planting. In addition, a field scene sensing plate 36 is provided in front of the planting cup 26. The field scene sensing plate 36 is rotatably provided around a rotation fulcrum shaft 36a in the left-right direction, and the seedling planting device 6 achieves a predetermined planting depth as the plate 36 rotates due to grounding. The rear wheels 5 and 5 are moved up and down as described above.

なお、圃場面感知プレート36の先端に接地ローラを設けて、畝面上を転がるようにしても良い。この接地ローラの表面に帳面テープでシリコンゴムを張り付けたり、接地ローラにシリコンゴムチューブを外嵌したりして、泥の付着を少なくすると良い。 A grounding roller may be provided at the tip of the field scene sensing plate 36 so as to roll on the ridge surface. It is advisable to attach silicon rubber to the surface of the grounding roller with a notebook tape, or to fit a silicon rubber tube on the grounding roller to reduce the adhesion of mud.

また、圃場面感知プレート36の回動支点軸36a前側にカウンターウエイトを取り付けて、接地ローラの接地圧を調整出来るようにすると良い。 Further, it is preferable to attach a counterweight to the front side of the rotation fulcrum shaft 36a of the field scene detection plate 36 so that the ground pressure of the ground roller can be adjusted.

覆土鎮圧輪8は、苗植付位置の後方位置において左右一対設けられ、横軸37回りに上下揺動自在な左右の鎮圧輪支持フレーム38にそれぞれ軸受支持されている。この左右一対の覆土鎮圧輪8,8は、畝鎮圧面8cを水平接地面8aと傾斜面8bを球状に形成した半球状で、鎮圧輪支持フレーム38に取り付けたブラケット39の支軸40に軸受保持され、図示省略のスプリングによって鎮圧輪支持フレーム38が下向きに付勢されており、機体の進行に伴って畝面を転動し、苗が植え付けられた後の苗移植穴の周囲の土を崩落させて穴を埋め戻すと共にその跡を軽く鎮圧をするようになっている。覆土鎮圧輪8,8は、水平接地面8aと傾斜面8bが球状になっているために、片側の覆土鎮圧輪8が畝の法面を転がるようになっても、畝鎮圧面8cが法面に沿って接地してその法面を崩さず鎮圧するようになる。 A pair of left and right compression ring 8s are provided at a position rear of the seedling planting position, and bearings are supported by left and right compression ring support frames 38 that can swing up and down around the horizontal axis 37, respectively. The pair of left and right soil-covering compression wheels 8 and 8 are hemispherical in which the ridge suppression surface 8c is formed into a spherical shape of the horizontal ground contact surface 8a and the inclined surface 8b, and are bearing on the support shaft 40 of the bracket 39 attached to the suppression ring support frame 38. The compression wheel support frame 38 is held and urged downward by a spring (not shown), and rolls on the ridges as the aircraft progresses, removing the soil around the seedling transplant hole after the seedlings have been planted. It collapses to fill the hole and lightly suppresses the trace. Since the horizontal ground contact surface 8a and the inclined surface 8b of the soil covering pressure rings 8 and 8 are spherical, even if the soil covering pressure ring 8 on one side rolls on the slope of the ridge, the ridge suppression surface 8c is used. It will be grounded along the surface and will be suppressed without breaking the slope.

図4は、覆土鎮圧輪8の別実施例で、水平接地面8aが円柱状で傾斜面8bを円錐状にして、傾斜面8bの先端に丸みを持たせて苗を傷つけないようにしている。 FIG. 4 shows another embodiment of the soil covering pressure ring 8, in which the horizontal ground contact surface 8a is columnar and the inclined surface 8b is conical, and the tip of the inclined surface 8b is rounded so as not to damage the seedlings. ..

鎮圧輪支持フレーム38の横軸37枢支部突起41が走行エクステンションケース10の前下部の突起部42にワイヤ43で連結され、走行エクステンションケース10が下方へ回動するとワイヤ43に引かれて鎮圧輪支持フレーム38の後部が浮き上がり、覆土鎮圧輪8が地面から離れる。従って、左右の後輪5,5の下げて主フレーム15の後部を浮かせる移動走行時や旋回時には、覆土鎮圧輪8,8が地面から浮き上がるようになる。 The horizontal axis 37 pivotal protrusion 41 of the compression wheel support frame 38 is connected to the protrusion 42 at the lower front part of the traveling extension case 10 by a wire 43, and when the traveling extension case 10 rotates downward, it is pulled by the wire 43 and the compression wheel The rear part of the support frame 38 is lifted, and the soil covering pressure ring 8 is separated from the ground. Therefore, the soil covering suppression wheels 8 and 8 are lifted from the ground during moving traveling or turning when the left and right rear wheels 5 and 5 are lowered to float the rear portion of the main frame 15.

機体旋回時には後輪5を下降させて機体を上昇させるが、この動作は、油圧昇降シリンダ16の伸長操作により横杆19、後輪昇降ロッド20,21、上側アーム10aを介して主伝動ケース3の左右の出力軸回りに走行エクステンションケース10,10が回動され、後輪5,5が下降して機体が上昇する。この時、鎮圧輪支持フレーム38を主フレーム15に適宜の方法で固定して覆土鎮圧輪8も上昇する。 When the machine body turns, the rear wheels 5 are lowered to raise the body, and this operation is performed by extending the hydraulic lifting cylinder 16 via the horizontal rod 19, the rear wheel lifting rods 20, 21 and the upper arm 10a. The traveling extension cases 10 and 10 are rotated around the left and right output shafts of the above, and the rear wheels 5 and 5 are lowered to raise the aircraft. At this time, the suppression ring support frame 38 is fixed to the main frame 15 by an appropriate method, and the soil covering suppression ring 8 also rises.

前記操縦ハンドル9の前側で苗供給部7の後側には、操作パネル52を設けている。この操作パネル52には、後輪5,5及び苗植付装置6並びに苗供給部7の駆動を共に入切可能な主クラッチレバー53と、油圧昇降シリンダ16による機体の昇降操作及び苗植付装置6並びに苗供給部7の駆動の入切のみが行える植付・昇降レバー54とを設けている。 An operation panel 52 is provided on the front side of the steering wheel 9 and on the rear side of the seedling supply unit 7. The operation panel 52 has a main clutch lever 53 capable of turning on and off the drive of the rear wheels 5 and 5, the seedling planting device 6, and the seedling supply unit 7, and the hydraulic elevating cylinder 16 for raising and lowering the machine body and planting seedlings. A planting / elevating lever 54 that can only turn on / off the drive of the device 6 and the seedling supply unit 7 is provided.

また、操縦ハンドル9の左右それぞれの把持部9a,9aの下方にはサイドクラッチレバー55,55を設け、このサイドクラッチレバー55,55の操作により左右一対の後輪5,5の左右一方の駆動を断つようになっている。そして、オペレータが操縦ハンドル9を押し下げ前輪4,4を宙に浮かせた状態で左右一方のサイドクラッチレバー55を操作して左右一方の後輪5の駆動を断ち、該後輪5を中心に機体を旋回させるようになっている。 In addition, side clutch levers 55 and 55 are provided below the left and right grip portions 9a and 9a of the steering handle 9, and the left and right pair of left and right rear wheels 5 and 5 are driven by operating the side clutch levers 55 and 55. Is to be cut off. Then, the operator operates the left and right side clutch levers 55 with the steering handle 9 pushed down and the front wheels 4 and 4 floated in the air to cut off the drive of the left and right rear wheels 5, and the aircraft is centered on the rear wheels 5. Is designed to turn.

5 後輪
6 苗植付装置
7 苗供給部
8 覆土鎮圧輪
8a 水平接地面
8b 傾斜面
8c 畝鎮圧面
10 走行エクステンションケース
26 植付カップ
28 苗供給回転台
32 苗供給カップ
38 鎮圧輪支持フレーム
43 連係部材(ワイヤ)
60 苗ガイド盤
60a 苗ガイド
60b 凹み部
5 Rear wheel 6 Seedling planting device 7 Seedling supply part 8 Soil cover suppression wheel 8a Horizontal ground contact surface 8b Inclined surface 8c Ridge suppression surface 10 Running extension case 26 Planting cup 28 Seedling supply turntable 32 Seedling supply cup 38 Suppression wheel support frame 43 Linking member (wire)
60 Seedling guide board 60a Seedling guide 60b Recessed part

Claims (4)

苗供給部(7)に供給された苗を苗植付装置(6)の植付カップ(26)が穿設する植付穴に投入し下方付勢する左右一対の覆土鎮圧輪(8,8)で苗を挟んで周囲の盛り土を鎮圧して苗を畝に植え付ける苗移植機において、
機体外側のブラケット(39)側を円筒状の水平接地面(8a)とすると共に、該水平接地面(8a)よりも機体内側に円錐形状の傾斜面(8b)を形成し、
前記苗供給部(7)を前記苗植付装置(6)の前記植付カップ(26)に苗を供給する複数の苗供給カップ(32)が周回する苗供給回転台(28)とし、前記苗供給回転台(28)の上部に前記苗供給カップ(32)に差し込む苗ガイド(60a)を有する苗ガイド盤(60)を設け、
該苗ガイド(60a)は、前記苗ガイド(60a)の中心点に向かって下方傾斜する円弧状の傾斜案内部(60g)を有しており、該傾斜案内部(60g)は前記苗供給カップ(32)の上側の外周縁部上を覆うと共に、前記傾斜案内部(60g)の下端部が形成する内周縁部は、前記苗供給カップ(32)の内部に入り込む構成とし、前記傾斜案内部(60g)の円弧は、機体上側に向かって凸状になるように形成することを特徴とする苗移植機。
A pair of left and right soil-covering pressure wheels (8, 8) that put the seedlings supplied to the seedling supply unit (7) into the planting hole drilled by the planting cup (26) of the seedling planting device (6) and urge them downward. ) To sandwich the seedlings and suppress the surrounding embankment to plant the seedlings in the ridges.
The bracket (39) side on the outside of the machine body is a cylindrical horizontal ground contact surface (8a), and a conical inclined surface (8b) is formed inside the machine body from the horizontal ground contact surface (8a).
The seedling supply unit (7) is used as a seedling supply turntable (28) around which a plurality of seedling supply cups (32) for supplying seedlings to the planting cup (26) of the seedling planting device (6) circulate. A seedling guide board (60) having a seedling guide (60a) to be inserted into the seedling supply cup (32) is provided above the seedling supply turntable (28).
The seedling guide (60a) has an arcuate inclined guide portion (60 g) that inclines downward toward the center point of the seedling guide (60a), and the inclined guide portion (60 g) is the seedling supply cup. The inner peripheral edge formed by the lower end of the inclined guide portion (60 g) is configured to enter the inside of the seedling supply cup (32) while covering the upper outer peripheral edge portion of (32). arc (60 g) is seedling transplantation machine, characterized in that formed to be convex I suited on the machine body.
前記傾斜案内部(60g)の前記下端部が形成する前記内周縁部は、前記苗ガイド盤(60)を前記苗供給部(7)に装着した状態では、前記苗供給カップ(32)の前記内部に入り込む構成とすることを特徴とする請求項1に記載の苗移植機。 The inner peripheral edge formed by the lower end of the inclined guide portion (60 g) is the seedling supply cup (32) in a state where the seedling guide plate (60) is attached to the seedling supply portion (7). The seedling transplanter according to claim 1, wherein the seedling transplanter is configured to penetrate inside. 前記苗ガイド盤(60)の中央に移植苗載置用の凹み部(60b)を形成し、
該凹み部(60b)の機体下部側である、底面のうち中心部(60j)付近には、凸部(60i)を形成し、
前記凸部(60i)を機体下方に向けて最も突出させたことを特徴とする請求項1に記載の苗移植機。
A recess (60b) for placing transplanted seedlings is formed in the center of the seedling guide board (60).
A convex portion (60i) is formed in the vicinity of the central portion (60j) of the bottom surface, which is the lower portion side of the recessed portion (60b).
The seedling transplanter according to claim 1, wherein the convex portion (60i) is most projected downward toward the machine body.
前記覆土鎮圧輪(8,8)を昇降可能に支持する鎮圧輪支持フレーム(38,38)と後輪(5,5)を昇降する左右走行エクステンションケース(10,10)を連係部材(43,43)で連結し、前記左右走行エクステンションケース(10,10)を下方回動して前記後輪(5,5)を降下して主フレーム(15)の後部を上昇させると前記鎮圧輪支持フレーム(38,38)が前記連係部材(43,43)に引かれて前記覆土鎮圧輪(8,8)を上昇させることを特徴とする請求項1から請求項3のいずれか1項に記載の苗移植機。 A member (43, 43,) links a pressure wheel support frame (38, 38) that supports the soil-covered pressure wheel (8, 8) so as to be able to move up and down, and a left and right traveling extension case (10, 10) that moves the rear wheel (5, 5) up and down. When the left and right traveling extension cases (10, 10) are rotated downward to lower the rear wheels (5, 5) and raise the rear portion of the main frame (15), the compression wheel support frame is connected by 43). The invention according to any one of claims 1 to 3, wherein (38, 38) is pulled by the linking member (43, 43) to raise the soil covering pressure ring (8, 8). Seedling transplanter.
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JP4853778B2 (en) * 2006-06-27 2012-01-11 日本甜菜製糖株式会社 Transplanter
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