JP2005095047A - Preliminary seedling stand structure for riding type rice transplanter - Google Patents

Preliminary seedling stand structure for riding type rice transplanter Download PDF

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JP2005095047A
JP2005095047A JP2003332127A JP2003332127A JP2005095047A JP 2005095047 A JP2005095047 A JP 2005095047A JP 2003332127 A JP2003332127 A JP 2003332127A JP 2003332127 A JP2003332127 A JP 2003332127A JP 2005095047 A JP2005095047 A JP 2005095047A
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support frame
preliminary seedling
support
seedling placement
rice transplanter
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JP4763963B2 (en
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Hideshi Tsuchioka
秀史 土岡
Yasuhiro Nagata
永田　　康弘
Matsuo Mitsumoto
松夫 三本
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Kubota Corp
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Kubota Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To freely move a supporting frame (preliminary seedling placing part) to an operation position and a supply position and to make an urging mechanism effectively function when a preliminary seedling stand structure for a riding type rice transplanter is equipped with a locking mechanism for retaining the supporting frame (preliminary seedling placing part) and releasing the retention. <P>SOLUTION: The preliminary seedling stand structure for the riding type rice transplanter is equipped with the supporting frame 33 freely moved from the operation position A1 at which the supporting frame is positioned on a side part of the front of a machine body and stands to the supply position A2 at which the supporting frame is positioned front and turns slantingly forward, and the locking mechanism for retaining the supporting frame 33 and releasing the retention and an urging mechanism 44 for urging the supporting frame 33 to the operation position A1. When the supporting frame 33 is moved to the supply position A1 in a state that a fixed number or more of seedlings are placed on a plurality of the preliminary seedling placing parts 39, urging force of the urging mechanism 44 is set so as to position the supporting frame 33 at the supply position A2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

本発明は、乗用型田植機における予備苗のせ台の構造に関する。   The present invention relates to a structure of a reserve seedling platform in a riding type rice transplanter.

乗用型田植機では例えば特許文献１に開示されているように、機体左右方向の横軸芯周りに前後に揺動自在な支持フレーム（特許文献１の図１，３，５中の３１，３２）を、運転部（特許文献１の図１及び図４中の１０）の前側の横側部に備え、予備苗載置部（特許文献１の図１，３，５中の２１）を支持フレームに備えて、予備苗のせ台を構成したものがある。これにより、特許文献１の構造によると、支持フレーム（予備苗載置部）を、機体の前部の横側部に位置して起立した作業位置（特許文献１の図１及び図５参照）、作業位置よりも前方に位置して斜め前方に向く補給位置（特許文献１の図４及び図６参照）に亘って移動させることができるのであり、ロック機構により支持フレームを作業位置及び補給位置に保持することができる。   In a riding type rice transplanter, for example, as disclosed in Patent Document 1, a support frame that can swing back and forth around a horizontal axis in the lateral direction of the machine body (31, 32 in FIGS. 1, 3, and 5 of Patent Document 1). ) Is provided on the front side portion of the operation unit (10 in FIG. 1 and FIG. 4 of Patent Document 1), and the preliminary seedling placement unit (21 in FIGS. 1, 3, and 5 of Patent Document 1) is supported. In preparation for the frame, there is one that constitutes a reserve seedling base. Thereby, according to the structure of patent document 1, the working position (refer FIG.1 and FIG.5 of patent document 1) which stood the support frame (preliminary seedling mounting part) was located in the side part of the front part of a body. In addition, the support frame can be moved over a supply position (see FIGS. 4 and 6 of Patent Document 1) which is located forward of the work position and obliquely forward, and the support frame is moved by the lock mechanism to the work position and the supply position. Can be held in.

従って、通常の植付作業の場合には、支持フレーム（予備苗載置部）を作業位置に位置させておくのであり、運転部の操縦者が予備苗載置部から苗を取り出して苗植付装置に補給する。畦から苗を補給する場合には、機体の前部が畦に接するような状態で機体を停止させ、支持フレーム（予備苗載置部）を補給位置に移動させることにより、畦の作業者が予備苗載置部に苗を補給する。   Therefore, in the case of normal planting work, the support frame (preliminary seedling placement part) is positioned at the work position, and the operator of the driving part takes out the seedling from the spare seedling placement part and transplants the seedling. Replenish the attached device. When replenishing seedlings from the cocoon, the aircraft is stopped with the front of the aircraft in contact with the cocoon, and the support frame (preliminary seedling placement unit) is moved to the replenishment position so that the Replenish seedlings to the spare seedling placement part.

特開２００３−１８９７１４号公報（図１，３，４，５，６）JP 2003-189714 A (FIGS. 1, 3, 4, 5, 6)

特許文献１の構造によると、支持フレーム（予備苗載置部）を作業位置に付勢する付勢機構（特許文献１の図１，３，４，５，６中の４０）が備えられており、支持フレーム（予備苗載置部）を補給位置から作業位置に楽に移動させることができる。
本発明は乗用型田植機の予備苗のせ台構造において、支持フレーム（予備苗載置部）を作業位置及び補給位置に移動自在に構成し、支持フレームを作業位置及び補給位置で保持及び保持解除自在なロック機構を備えた場合、付勢機構が有効に機能するように構成することを目的としている。 According to the structure of Patent Document 1, an urging mechanism (40 in FIGS. 1, 3, 4, 5, and 6 of Patent Document 1) that urges the support frame (preliminary seedling placement portion) to the working position is provided. Thus, the support frame (preliminary seedling placement portion) can be easily moved from the replenishment position to the work position.
The present invention relates to a stand seedling structure for a riding type rice transplanter, wherein a support frame (spare seedling placement portion) is configured to be movable to a work position and a replenishment position, and the support frame is held and released at the work position and the replenishment position. In the case where a flexible locking mechanism is provided, the urging mechanism is configured to function effectively.

［Ｉ］
（構成）
本発明の第１特徴は、乗用型田植機の予備苗のせ台構造において次のように構成することにある。
機体左右方向の横軸芯周りに前後に揺動自在な支持フレームを、運転部の前側の横側部に備え、苗を載置する複数の予備苗載置部を支持フレームに備える。支持フレームを、機体の前部の横側部に位置して起立した作業位置、作業位置よりも前方に位置して斜め前方に向く補給位置に亘って移動自在に構成し、支持フレームを作業位置及び補給位置で保持及び保持解除自在なロック機構を備える。支持フレームを作業位置に付勢する付勢機構を備える。複数の予備苗載置部に所定数以上の苗が載置された状態で、支持フレームが補給位置に移動させられると、支持フレームが補給位置に位置するように、付勢機構の付勢力を設定する。 [I]
(Constitution)
The first feature of the present invention resides in the following structure in the reserve seedling stage structure of a riding type rice transplanter.
A support frame that can swing back and forth around the horizontal axis in the left-right direction of the machine body is provided on the lateral side portion on the front side of the operating portion, and a plurality of preliminary seedling placement portions for placing seedlings are provided on the support frame. The support frame is configured to be movable over a standing work position located on the lateral side of the front part of the machine body, and a replenishment position located forward of the work position and facing diagonally forward. And a lock mechanism that can be held and released at the replenishment position. An urging mechanism for urging the support frame to the working position is provided. When the support frame is moved to the replenishment position with a predetermined number or more of seedlings placed on the plurality of preliminary seedling placement units, the urging force of the urging mechanism is applied so that the support frame is located at the replenishment position. Set.

（作用）
本発明の第１特徴によると、支持フレーム（予備苗載置部）を機体の前部の横側部に位置して起立した作業位置、作業位置よりも前方に位置して斜め前方に向く補給位置に亘って移動自在に構成しており、支持フレーム（予備苗載置部）が自重により補給位置に移動しようとしている。この場合に、本発明の第１特徴によると、支持フレーム（予備苗載置部）を作業位置に付勢する付勢機構を備えており、複数の予備苗載置部に所定数以上の苗が載置された状態で支持フレーム（予備苗載置部）が補給位置に移動させられると、支持フレーム（予備苗載置部）が補給位置に位置するように、付勢機構の付勢力を設定している。 (Function)
According to the first feature of the present invention, the support frame (preliminary seedling placement part) is located on the lateral side of the front part of the machine body and stands up. Replenishment is located forward of the work position and obliquely forward. The support frame (preliminary seedling placement portion) is about to move to the replenishment position by its own weight. In this case, according to the first feature of the present invention, a biasing mechanism for biasing the support frame (preliminary seedling placement portion) to the working position is provided, and a predetermined number or more seedlings are provided in the plurality of preliminary seedling placement portions. When the support frame (preliminary seedling placement portion) is moved to the replenishment position while the is placed, the biasing force of the biasing mechanism is applied so that the support frame (preliminary seedling placement portion) is located at the replenishment position. It is set.

これにより、本発明の第１特徴によると、複数の予備苗載置部に所定数以上の苗が載置された状態で、支持フレーム（予備苗載置部）を補給位置に移動させた場合、ロック機構を保持状態に操作しなくても、支持フレーム（予備苗載置部）は補給位置に残される（補給位置に安定して位置する）。   Thereby, according to the first feature of the present invention, when the support frame (preliminary seedling placement unit) is moved to the replenishment position in a state where a predetermined number of seedlings are placed on the plurality of preliminary seedling placement units. Even if the lock mechanism is not operated in the holding state, the support frame (preliminary seedling placement portion) remains at the replenishment position (is stably located at the replenishment position).

（発明の効果）
本発明の第１特徴によると、乗用型田植機の予備苗のせ台構造において、支持フレーム（予備苗載置部）を作業位置及び補給位置に移動自在に構成し、支持フレーム（予備苗載置部）を作業位置及び補給位置で保持及び保持解除自在なロック機構を備えた場合、複数の予備苗載置部に所定数以上の苗が載置された状態では、ロック機構を保持状態に操作しなくても、支持フレーム（予備苗載置部）が補給位置に安定して位置するようになって、予備苗のせ台の安定性を良いものにすることができた。 (The invention's effect)
According to the first feature of the present invention, in the preliminary seedling platform structure of the riding type rice transplanter, the support frame (preliminary seedling placement unit) is configured to be movable to the working position and the replenishment position, and the support frame (preliminary seedling placement) Part) is operated at the working position and the replenishment position, and the lock mechanism is operated in the holding state when a predetermined number of seedlings are placed on the plurality of spare seedling placement parts. Even without this, the support frame (preliminary seedling placement portion) can be stably positioned at the replenishment position, and the stability of the preliminary seedling setting table can be improved.

この場合、本発明の第１特徴によると、複数の予備苗載置部に苗が載置された状態で、支持フレーム（予備苗載置部）を補給位置に位置させていると、予備苗載置部に載置された苗が機体の前方に位置する状態となるので、予備苗載置部に載置された苗を機体のバランスウェイトとして機能させることができる。   In this case, according to the first feature of the present invention, when the support frame (preliminary seedling placement unit) is positioned at the replenishment position in a state where the seedlings are placed on the plurality of preliminary seedling placement units, Since the seedling placed on the placement unit is positioned in front of the machine body, the seedling placed on the preliminary seedling placement part can function as a balance weight of the machine body.

［ＩＩ］
（構成）
本発明の第２特徴は、本発明の第１特徴の乗用型田植機の予備苗のせ台構造において次のように構成することにある。
支持フレームが補給位置を越えて前方に揺動することを止めるストッパー部を備える。複数の予備苗載置部に所定数以上の苗が載置された状態で、支持フレームが補給位置に移動させられると、支持フレームがストッパー部に接当することによって、支持フレームが補給位置に位置するように構成する。 [II]
(Constitution)
The second feature of the present invention lies in the following configuration in the reserve seedling stage structure of the riding type rice transplanter of the first feature of the present invention.
A stopper portion is provided that stops the support frame from swinging forward beyond the replenishment position. When the support frame is moved to the replenishment position in a state where a predetermined number of seedlings are placed on the plurality of spare seedling placement parts, the support frame comes into contact with the stopper part, so that the support frame is brought to the replenishment position. Configure to be located.

（作用）
本発明の第２特徴によると、本発明の第１特徴と同様に前項［Ｉ］に記載の「作用」を備えており、これに加えて以下のような「作用」を備えている。
前項［Ｉ］に記載のように複数の予備苗載置部に所定数以上の苗が載置された状態で、支持フレーム（予備苗載置部）を補給位置に位置させていると、支持フレーム（予備苗載置部）が自重により補給位置を越えて前方に移動しようとする。このような状態においてロック機構を保持状態に操作するとことにより、支持フレーム（予備苗載置部）が自重により補給位置を越えて前方に移動しようとする状態を止めることができるのであるが、支持フレーム（予備苗載置部）の重量がロック機構に掛かるので、このような状態が何度も繰り返されると、ロック機構の耐久性の低下に発展することが考えられる。 (Function)
According to the second feature of the present invention, the “action” described in the preceding item [I] is provided in the same manner as the first feature of the present invention, and in addition to this, the following “action” is provided.
When the support frame (preliminary seedling placement unit) is positioned at the replenishment position in a state where a predetermined number or more of seedlings are placed on the plurality of preliminary seedling placement units as described in [I] above, The frame (preliminary seedling placement part) tries to move forward beyond the replenishment position by its own weight. By operating the lock mechanism in the holding state in such a state, it is possible to stop the state in which the support frame (preliminary seedling placement portion) tries to move forward beyond the replenishment position due to its own weight. Since the weight of the frame (preliminary seedling placement portion) is applied to the lock mechanism, it is conceivable that if such a state is repeated many times, the durability of the lock mechanism is lowered.

本発明の第２特徴によると、ロック機構とは別にストッパー部を備え、支持フレームがストッパー部に接当することによって、支持フレーム（予備苗載置部）が補給位置に位置するように構成している。これにより、本発明の第２特徴によると、複数の予備苗載置部に所定数以上の苗が載置された状態で、支持フレーム（予備苗載置部）を補給位置に位置させている場合、支持フレーム（予備苗載置部）の重量がストッパー部に掛かりロック機構に掛かることはない。   According to the second feature of the present invention, a stopper portion is provided separately from the lock mechanism, and the support frame (preliminary seedling placement portion) is positioned at the replenishment position when the support frame contacts the stopper portion. ing. Thereby, according to the 2nd characteristic of this invention, the support frame (preliminary seedling mounting part) is located in the replenishment position in the state by which the predetermined number or more seedlings were mounted in the several preliminary seedling mounting part. In this case, the weight of the support frame (preliminary seedling placement portion) is applied to the stopper portion and is not applied to the lock mechanism.

（発明の効果）
本発明の第２特徴によると、本発明の第１特徴と同様に前項［Ｉ］に記載の「発明の効果」を備えており、これに加えて以下のような「発明の効果」を備えている。
本発明の第２特徴によると、複数の予備苗載置部に所定数以上の苗が載置された状態で支持フレーム（予備苗載置部）を補給位置に位置させている場合、支持フレーム（予備苗載置部）の重量がストッパー部に掛かりロック機構に掛かることはないので、ロック機構の耐久性の低下を抑えることができた。 (The invention's effect)
According to the second feature of the present invention, the “effect of the invention” described in the preceding item [I] is provided in the same manner as the first feature of the present invention. In addition, the following “effect of the invention” is provided. ing.
According to the second feature of the present invention, when the support frame (preliminary seedling placement unit) is positioned at the replenishment position in a state where a predetermined number of seedlings are placed on the plurality of preliminary seedling placement units, Since the weight of the (preliminary seedling placement portion) is hung on the stopper portion and not on the lock mechanism, a decrease in durability of the lock mechanism could be suppressed.

［ＩＩＩ］
（構成）
本発明の第３特徴は、本発明の第１又は第２特徴の乗用型田植機の予備苗のせ台構造において次のように構成することにある。
複数の予備苗載置部に所定数の苗が載置されていない状態で、付勢機構により支持フレームが作業位置を越えて後方に移動させられるように、付勢機構の付勢力を設定する。 [III]
(Constitution)
The third feature of the present invention resides in the following structure in the preliminary seedling stage structure of the riding type rice transplanter of the first or second feature of the present invention.
The urging force of the urging mechanism is set so that the urging mechanism can move the support frame beyond the work position backward when a predetermined number of seedlings are not placed on the plurality of preliminary seedling placement parts. .

（作用）
本発明の第３特徴によると、本発明の第１又は第２特徴と同様に前項［Ｉ］［ＩＩ］に記載の「作用」を備えており、これに加えて以下のような「作用」を備えている。
例えば路上での移動走行の際、複数の予備苗載置部に所定数の苗が載置されていない状態で、支持フレーム（予備苗載置部）を作業位置に位置させ、ロック機構を保持状態に操作して、路上での移動走行を行うことが多い。
この場合、本発明の第３特徴によると、付勢機構により支持フレーム（予備苗載置部）が作業位置を越えて後方に移動させられようとして、ロック機構の内部の部材が片側に寄せられた状態（例えば凹部に凸部が入り込んで保持状態となっている場合に、凹部の片側の壁部に凸部が押し付けられたような状態）となって、ロック機構のガタ付きが抑えられる。 (Function)
According to the third feature of the present invention, the “action” described in the preceding item [I] [II] is provided in the same manner as the first or second feature of the present invention. In addition, the following “action” is provided. It has.
For example, when traveling on the road, the support frame (preliminary seedling placement unit) is positioned at the working position and the lock mechanism is held in a state where a predetermined number of seedlings are not placed on the plurality of preliminary seedling placement units. In many cases, the vehicle travels on the road by manipulating the state.
In this case, according to the third feature of the present invention, the support frame (preliminary seedling placement portion) is moved backward beyond the working position by the biasing mechanism, and the member inside the lock mechanism is moved to one side. (For example, when the convex portion enters the concave portion and is in the holding state, the convex portion is pressed against the wall portion on one side of the concave portion), and the backlash of the lock mechanism is suppressed.

（発明の効果）
本発明の第３特徴によると、本発明の第１又は第２特徴と同様に前項［Ｉ］［ＩＩ］に記載の「発明の効果」を備えており、これに加えて以下のような「発明の効果」を備えている。
本発明の第３特徴によると、例えば路上での移動走行の際、ロック機構のガタ付きを抑えることができるようになって、ガタ付きが繰り返して発生することによるロック機構の耐久性の低下を抑えることができた。 (The invention's effect)
According to the third feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] and [II] is provided in the same manner as the first or second feature of the present invention. The effect of the invention is provided.
According to the third feature of the present invention, for example, when traveling on the road, it is possible to suppress the backlash of the lock mechanism, and the durability of the lock mechanism is reduced due to repeated backlash. I was able to suppress it.

［ＩＶ］
（構成）
本発明の第４特徴は、本発明の第１〜第３特徴の乗用型田植機の予備苗のせ台構造のうちのいずれか一つにおいて次のように構成することにある。
支持フレームを機体左右方向に押し操作する補助付勢機構を備える。 [IV]
(Constitution)
The fourth feature of the present invention resides in the following configuration in any one of the preliminary seedling structure of the riding type rice transplanter according to the first to third features of the present invention.
An auxiliary biasing mechanism is provided that pushes the support frame in the left-right direction of the machine body.

（作用）
本発明の第４特徴によると、本発明の第１〜第３特徴のうちのいずれか一つと同様に前項［Ｉ］〜［ＩＩＩ］に記載の「作用」を備えており、これに加えて以下のような「作用」を備えている。
本発明の第４特徴によると、支持フレームが機体左右方向の横軸芯周りに前後に揺動自在に備えられている状態において、支持フレームが機体左右方向（例えば機体の横外方又は機体の内方）に押し操作されるので、前述の横軸芯の機体左右方向での支持フレームのガタ付きが抑えられる。 (Function)
According to the 4th characteristic of this invention, it is equipped with "action" of previous clause [I]-[III] similarly to any one of the 1st-3rd characteristics of this invention, In addition to this, It has the following “actions”.
According to the fourth aspect of the present invention, in the state in which the support frame is provided so as to be swingable back and forth around the horizontal axis in the left-right direction of the aircraft, the support frame is mounted in the left-right direction of the aircraft (for example, laterally outward of the aircraft or Since the push operation is performed inwardly, the backlash of the support frame in the left-right direction of the body of the horizontal axis can be suppressed.

（発明の効果）
本発明の第４特徴によると、本発明の第１〜第３特徴のうちのいずれか一つと同様に前項［Ｉ］〜［ＩＩＩ］に記載の「発明の効果」を備えており、これに加えて以下のような「発明の効果」を備えている。
本発明の第４特徴によると、支持フレームが機体左右方向の横軸芯周りに前後に揺動自在に備えられている状態において、前述の横軸芯の機体左右方向での支持フレームのガタ付きが抑えられるようになって、ガタ付きが繰り返して発生することによる前述の横軸芯の付近の部材の耐久性の低下を抑えることができた。 (The invention's effect)
According to the fourth feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [III] is provided similarly to any one of the first to third features of the present invention. In addition, the following “effects of the invention” are provided.
According to the fourth aspect of the present invention, in the state in which the support frame is provided so as to be swingable back and forth around the horizontal axis in the left-right direction of the body, the backlash of the support frame in the left-right direction of the body of the horizontal axis is described. As a result, it was possible to suppress a decrease in the durability of the member in the vicinity of the above-described horizontal axis due to repeated occurrence of backlash.

［Ｖ］
（構成）
本発明の第５特徴は、本発明の第１〜第４特徴の乗用型田植機の予備苗のせ台構造のうちのいずれか一つにおいて次のように構成することにある。
機体の下部から機体の横外方に延出されたトーションバーを支持フレームに取り付けることによって、トーションバーにより付勢機構及び補助付勢機構を構成する。 [V]
(Constitution)
The fifth feature of the present invention resides in the following configuration in any one of the reserve seedling structure of the riding type rice transplanter according to the first to fourth features of the present invention.
An urging mechanism and an auxiliary urging mechanism are configured by the torsion bar by attaching to the support frame a torsion bar extending from the lower part of the body to the laterally outer side of the body.

（作用）
本発明の第５特徴によると、本発明の第１〜第４特徴のうちのいずれか一つと同様に前項［Ｉ］〜［ＩＶ］に記載の「作用」を備えており、これに加えて以下のような「作用」を備えている。
トーションバーは一般に、弾性を備えた棒状の部材をクランク状に折り曲げて構成されることが多い。これにより、トーションバーの捩じり方向を支持フレームの作業位置及び補給位置への移動方向に設定すれば、支持フレームを作業位置に付勢する付勢機構としてトーションバーを機能させることができる。次に、トーションバーのクランクアーム部分を曲げる方向（トーションバーの捩じり方向と直交する方向）を機体左右方向に設定すれば、支持フレームを機体左右方向に押し操作する補助付勢機構としてトーションバーを機能させることができる。 (Function)
According to the fifth aspect of the present invention, the “action” described in the preceding paragraphs [I] to [IV] is provided similarly to any one of the first to fourth characteristics of the present invention. It has the following “actions”.
In general, a torsion bar is often configured by bending a rod-like member having elasticity into a crank shape. Thereby, if the torsion direction of the torsion bar is set to the working position of the support frame and the moving direction to the replenishment position, the torsion bar can function as an urging mechanism that urges the support frame to the working position. Next, if the direction in which the crank arm portion of the torsion bar is bent (the direction perpendicular to the torsion direction of the torsion bar) is set to the left and right direction of the machine, the torsion is used as an auxiliary biasing mechanism that pushes the support frame in the left and right direction of the machine. The bar can function.

（発明の効果）
本発明の第５特徴によると、本発明の第１〜第４特徴のうちのいずれか一つと同様に前項［Ｉ］〜［ＩＶ］に記載の「発明の効果」を備えており、これに加えて以下のような「発明の効果」を備えている。
本発明の第５特徴によると、トーションバーを付勢機構及び補助付勢機構として機能させることができるようになり、付勢機構及び補助付勢機構を別々に備える必要が無くなって、構造の簡素化の面で有利なものとなった。 (The invention's effect)
According to the fifth feature of the present invention, the “effect of the invention” described in the preceding paragraphs [I] to [IV] is provided as in any one of the first to fourth features of the present invention. In addition, the following “effects of the invention” are provided.
According to the fifth aspect of the present invention, the torsion bar can function as an urging mechanism and an auxiliary urging mechanism, and it is not necessary to separately provide the urging mechanism and the auxiliary urging mechanism, thereby simplifying the structure. It became advantageous in terms of conversion.

［１］
図１に示すように、前輪１及び後輪２で支持された機体に運転部３が備えられており、機体の後部にリンク機構４及び油圧シリンダ５を介して苗植付装置６が昇降駆動自在に支持されて、乗用型田植機が構成されている。 [1]
As shown in FIG. 1, a driving unit 3 is provided on a machine body supported by a front wheel 1 and a rear wheel 2, and a seedling planting device 6 is driven up and down via a link mechanism 4 and a hydraulic cylinder 5 at the rear part of the machine body. A riding type rice transplanter is supported freely.

図１及び図２に示すように、苗植付装置６は４条植型式に構成されており、２個の伝動ケース２１、伝動ケース２１の後部の右及び左の横側部に回転駆動自在に支持された植付ケース２２、植付ケース２２の両端に備えられた一対の植付アーム２３、接地フロート２４、及び苗が載置される苗のせ台２５等を備えて構成されている。これにより、苗のせ台２５が左右に往復横送り駆動されるのに伴って、植付ケース２２が回転駆動され、苗のせ台２５の下部から植付アーム２３が交互に苗を取り出して田面に植え付ける。   As shown in FIGS. 1 and 2, the seedling planting device 6 is configured in a four-row planting type, and can be driven to rotate to two transmission cases 21, right and left lateral sides of the rear portion of the transmission case 21. And a pair of planting arms 23 provided at both ends of the planting case 22, a grounding float 24, a seedling platform 25 on which seedlings are placed, and the like. As a result, the planting case 22 is rotationally driven as the seedling platform 25 is driven back and forth to the left and right, and the planting arm 23 alternately takes out the seedlings from the lower part of the seedling platform 25 and puts them on the rice field. Plant.

図１及び図２に示すように、運転部３においてフロア７の後方の上方に運転座席８が備えられており、運転座席８の後側に肥料を貯留するホッパー２６、繰り出し部２７及びブロア２８が備えられている。接地フロート２４に作溝器２９が備えられて、繰り出し部２７と作溝器２９とに亘ってホース３０が接続されている。これにより、前述のような苗の植え付けに伴って、ホッパー２６から肥料が所定量ずつ繰り出し部２７によって繰り出されて、ブロア２８の送風により肥料がホース３０を通って作溝器２９に供給されるのであり、作溝器２９を介して肥料が田面に供給される。   As shown in FIG. 1 and FIG. 2, a driving seat 8 is provided above the rear of the floor 7 in the driving unit 3, and a hopper 26 that stores fertilizer, a feeding unit 27, and a blower 28 on the rear side of the driving seat 8. Is provided. A groover 29 is provided in the ground float 24, and a hose 30 is connected across the feeding portion 27 and the groover 29. Thereby, along with the seedling planting as described above, the fertilizer is fed from the hopper 26 by a predetermined amount by the feeding unit 27, and the fertilizer is supplied to the grooving device 29 through the hose 30 by the blower 28. Therefore, fertilizer is supplied to the rice field through the grooving device 29.

［２］
次に、運転部３の付近の構造について説明する。
図１，２，３に示すように、フロア７の後方の上方に運転座席８が備えられ、エンジン（図示せず）を覆うボンネット９がフロア７の前方に備えられており、ボンネット９の右及び左の横側部に、フロア７につながる右及び左のステップ１０が備えられている。前輪１を操向操作する操縦ハンドル１１がボンネット９の上部に備えられており、ボンネット９の上部において操縦ハンドル１１の右の横側部に、エンジンのアクセル部を操作するアクセルレバー１５及び昇降レバー１２が備えられ、操縦ハンドル１１の左の横側部に、主変速レバー１３が備えられられている。ボンネット９の後面における左の横側部に副変速レバー１６が備えられている。 [2]
Next, the structure near the driving unit 3 will be described.
As shown in FIGS. 1, 2, and 3, a driver's seat 8 is provided above and behind the floor 7, and a bonnet 9 that covers an engine (not shown) is provided in front of the floor 7. The right and left steps 10 connected to the floor 7 are provided on the left lateral side. A steering handle 11 for steering the front wheel 1 is provided at the upper part of the bonnet 9. An accelerator lever 15 and a lift lever for operating the accelerator part of the engine are provided on the right side of the steering handle 11 at the upper part of the bonnet 9. 12 and a main speed change lever 13 is provided on the left side of the steering handle 11. A subtransmission lever 16 is provided on the left lateral side of the rear surface of the bonnet 9.

図１，２，３に示すように、昇降レバー１２は上昇位置、中立位置、下降位置及び植付位置に操作自在であり、後側から前側に向けて上昇位置、中立位置、下降位置及び植付位置が、この順序で配置されている（図２に示す状態は昇降レバー１２を中立位置に操作している状態）。昇降レバー１２を上昇位置に操作すると、苗植付装置６に動力を伝達する植付クラッチ（図示せず）が遮断状態に操作されて、油圧シリンダ５により苗植付装置６が上昇駆動される。昇降レバー１２を中立位置に操作すると、植付クラッチが遮断状態に操作されて油圧シリンダ５が停止する。昇降レバー１２を下降位置に操作すると、植付クラッチが遮断状態に操作されて、油圧シリンダ５により苗植付装置６が下降駆動される。昇降レバー１２を植付位置に操作すると、植付クラッチが伝動状態に操作されて、苗植付装置６が田面から設定高さに維持されるように油圧シリンダ５により自動的に昇降駆動される。   As shown in FIGS. 1, 2 and 3, the elevating lever 12 can be operated to the raised position, the neutral position, the lowered position and the planting position, and the raised position, the neutral position, the lowered position and the planting position from the rear side to the front side. The attached positions are arranged in this order (the state shown in FIG. 2 is a state in which the elevating lever 12 is operated to the neutral position). When the elevating lever 12 is operated to the raised position, a planting clutch (not shown) that transmits power to the seedling planting device 6 is operated in a disconnected state, and the seedling planting device 6 is driven up by the hydraulic cylinder 5. . When the elevating lever 12 is operated to the neutral position, the planting clutch is operated in the disengaged state and the hydraulic cylinder 5 is stopped. When the elevating lever 12 is operated to the lowered position, the planting clutch is operated in a disengaged state, and the seedling planting device 6 is driven downward by the hydraulic cylinder 5. When the elevating lever 12 is operated to the planting position, the planting clutch is operated in the transmission state, and the seedling planting device 6 is automatically driven up and down by the hydraulic cylinder 5 so as to be maintained at the set height from the rice field. .

静油圧式無段変速装置（図示せず）及びギヤ変速式の副変速装置（図示せず）が備えられており、エンジンの動力がベルト型式のテンションクラッチ（図示せず）を介して静油圧式無段変速装置に伝達され、静油圧式無段変速装置から副変速装置を介して、前輪１及び後輪２に伝達される。静油圧式無段変速装置は中立位置、前進の高速側及び後進の高速側に無段階に変速自在に構成されており、副変速装置は低速の植付走行位置及び高速の路上走行位置の２位置切換式に構成されている。   A hydrostatic continuously variable transmission (not shown) and a gear transmission auxiliary transmission (not shown) are provided, and the power of the engine is hydrostatic via a belt type tension clutch (not shown). Is transmitted to the front wheel 1 and the rear wheel 2 from the hydrostatic continuously variable transmission through the auxiliary transmission. The hydrostatic continuously variable transmission is configured to be steplessly variable between a neutral position, a forward high speed side, and a reverse high speed side, and the sub-transmission is provided with a low-speed planting travel position and a high-speed road travel position. It is configured as a position switching type.

図１及び図２に示す状態は主変速レバー１３を中立位置に操作している状態であり、静油圧式無段変速装置が中立位置に操作されて機体は停止している。主変速レバー１３を中立位置から前方の前進変速域に操作すると、静油圧式無段変速装置が前進の高速側に操作されるのであり、主変速レバー１３を中立位置から後方の後進変速域に操作すると、静油圧式無段変速装置が後進の高速側に操作される。図１に示すように、副変速レバー１６を上方及び下方に操作することによって、副変速装置が低速の植付走行位置及び高速の路上走行位置に操作される。   The state shown in FIGS. 1 and 2 is a state in which the main transmission lever 13 is operated to the neutral position, and the airframe is stopped by operating the hydrostatic continuously variable transmission device to the neutral position. When the main shift lever 13 is operated from the neutral position to the forward forward shift range, the hydrostatic continuously variable transmission is operated to the forward high speed side, and the main shift lever 13 is moved from the neutral position to the rear reverse shift range. When operated, the hydrostatic continuously variable transmission is operated to the high speed side of the reverse drive. As shown in FIG. 1, by operating the auxiliary transmission lever 16 upward and downward, the auxiliary transmission is operated to a low speed planting traveling position and a high speed road traveling position.

図２及び図３に示すように、右のステップ１０におけるフロア７に近い部分に操作ペダル１４が備えられており、操作ペダル１４を下方の踏み位置に操作すると、静油圧式無段変速装置が中立位置よりも少し高速側の低速位置に操作され、前輪１及び後輪２を制動可能なブレーキ（図示せず）が制動側に操作される。操作ペダル１４を上方の戻し位置に操作すると、静油圧式無段変速装置が前述の低速位置に残された状態で、ブレーキが制動解除側に操作されるのであり、バネ（図示せず）により操作ペダル１４が上方の戻し位置に付勢されている。   As shown in FIGS. 2 and 3, an operation pedal 14 is provided in a portion near the floor 7 in the right step 10, and when the operation pedal 14 is operated to a lower step position, the hydrostatic continuously variable transmission is A brake (not shown) capable of braking the front wheel 1 and the rear wheel 2 is operated to the braking side by operating to a low speed position slightly higher than the neutral position. When the operation pedal 14 is operated to the upper return position, the brake is operated to the braking release side in a state where the hydrostatic continuously variable transmission is left at the low speed position described above, and a spring (not shown) is used. The operation pedal 14 is biased to the upper return position.

図２及び図３に示すように、操作ペダル１４に操作レバー１７が固定されており、操作レバー１７によって操作ペダル１４を前述の下方の踏み位置及び上方の戻し位置に操作することができる。右のステップ１０において、操作ペダル１４及び操作レバー１７の前側の部分にロックレバー１８が備えられており、ロックレバー１８により操作ペダル１４及び操作レバー１７を下方の踏み位置で保持することができる。   As shown in FIGS. 2 and 3, an operation lever 17 is fixed to the operation pedal 14, and the operation pedal 14 can be operated to the above-described lower stepping position and upper return position by the operation lever 17. In the right step 10, a lock lever 18 is provided in front of the operation pedal 14 and the operation lever 17, and the operation pedal 14 and the operation lever 17 can be held at the lower step position by the lock lever 18.

図１，２，３に示すように、エンジンを支持する前フレーム１９が機体の前部の下部に備えられており、前フレーム１９の機体左右方向の横軸芯Ｐ１周りに、操作アーム２０が揺動自在に支持されている。操作アーム２０は正面視で逆Ｕ字状に構成されて、上方に起立した格納位置、及び機体の前部から前方に出た作業位置に亘り揺動自在に構成されている。操作アーム２０を作業位置に操作すると、前輪１及び操縦ハンドル１１が直進位置で保持され、操作アーム２０を格納位置に操作すると、前輪１及び操縦ハンドル１１の保持が解除されるように構成されている。   As shown in FIGS. 1, 2, and 3, a front frame 19 that supports the engine is provided at a lower portion of the front portion of the airframe, and an operation arm 20 is disposed around a horizontal axis P <b> 1 of the front frame 19 in the left-right direction of the airframe. It is swingably supported. The operation arm 20 is configured in an inverted U shape when viewed from the front, and is configured to be swingable over a retracted position standing upward and a working position protruding forward from the front of the machine body. When the operation arm 20 is operated to the working position, the front wheel 1 and the steering handle 11 are held in the straight movement position, and when the operation arm 20 is operated to the retracted position, the holding of the front wheel 1 and the steering handle 11 is released. Yes.

［３］
次に、機体の前部の右及び左の横側部に備えられる予備苗のせ台について説明する。
図１，２，３に示すように、前フレーム１９に固定された支持フレーム３１が右及び左の横外側に延出されており、板材をＵ字状に折り曲げて構成された支持部材３２が支持フレーム３１の端部に固定されて、支持部材３２が右及び左のステップ１０の右及び左の横外側に位置している。 [3]
Next, a description will be given of spare seedling platforms provided on the right and left lateral sides of the front part of the aircraft.
As shown in FIGS. 1, 2, and 3, a support frame 31 fixed to the front frame 19 extends to the right and left lateral outer sides, and a support member 32 configured by bending a plate material into a U shape. Fixed to the end of the support frame 31, the support members 32 are positioned on the right and left lateral outer sides of the right and left steps 10.

図１，３，５に示すように、支持部材３２の機体左右方向の横軸芯Ｐ２周りに支持フレーム３３が前後に揺動自在に支持されて上方に延出されて、支持部材３２の機体左右方向の横軸芯Ｐ３周りに、支持リンク３４が前後に揺動自在に支持されて上方に延出されている。図６，９，１０に示すように、板材を正面視Ｌ字状に折り曲げて構成された支持板４０が支持フレーム３３の上端に固定され、支持フレーム３３の上部に支持ピン３３ａが固定されている。   As shown in FIGS. 1, 3, and 5, a support frame 33 is swingably supported back and forth around the horizontal axis P <b> 2 in the left-right direction of the body of the support member 32, and is extended upward. Around the horizontal axis P3 in the left-right direction, a support link 34 is supported swingably back and forth and extends upward. As shown in FIGS. 6, 9, and 10, a support plate 40 configured by bending a plate material into an L shape when viewed from the front is fixed to the upper end of the support frame 33, and a support pin 33 a is fixed to the upper portion of the support frame 33. Yes.

図１，３，５，６に示すように、パイプ状の支持フレーム３６が備えられ、平面視コ字状の３個のブラケット３７が支持フレーム３６に固定されて、３個の予備苗載置部３９が右（左）の横外方に向く作業位置及び上方に向く格納位置に揺動自在にブラケット３７に支持されている。図６，９，１０に示すように、板材を平面視コ字に折り曲げて構成された支持板３５が支持フレーム３６の上下の中間部分に固定され、支持フレーム３６における支持板３５の少し下側の部分に、支持パイプ３６ａが貫通して固定されている。   As shown in FIGS. 1, 3, 5, and 6, a pipe-like support frame 36 is provided, and three brackets 37 having a U-shape in plan view are fixed to the support frame 36, and three preliminary seedlings are placed thereon. The portion 39 is supported by the bracket 37 so as to be swingable at a working position facing right (left) laterally outward and a retracted position facing upward. As shown in FIGS. 6, 9, and 10, a support plate 35 formed by bending a plate material in a U shape in plan view is fixed to the upper and lower intermediate portions of the support frame 36, and slightly below the support plate 35 in the support frame 36. The support pipe 36a is penetrated and fixed to this part.

図６，９，１０に示すように、支持フレーム３３の支持ピン３３ａが支持フレーム３６の支持パイプ３６ａに挿入され、支持板３５に固定されたブラケット３８に支持リンク３４の上端が挿入されている。これにより、支持フレーム３３，３６が機体左右方向の横軸芯Ｐ４（支持フレーム３３の支持ピン３３ａ及び支持フレーム３６の支持パイプ３６ａ）周りに前後に揺動自在に接続され、支持リンク３４の上端がブラケット３８の機体左右方向の横軸芯Ｐ５周りに前後に揺動自在に接続されている。   As shown in FIGS. 6, 9, and 10, the support pin 33 a of the support frame 33 is inserted into the support pipe 36 a of the support frame 36, and the upper end of the support link 34 is inserted into the bracket 38 fixed to the support plate 35. . As a result, the support frames 33 and 36 are swingably connected back and forth around the horizontal axis P4 (the support pin 33a of the support frame 33 and the support pipe 36a of the support frame 36) in the horizontal direction of the machine body. Is connected to the bracket 38 so as to be swingable back and forth around the horizontal axis P5 in the horizontal direction of the machine body.

以上の構造により図４（イ）（ロ）及び図５に示すように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が、機体の前部の横側部に位置して予備苗載置部３９及び支持フレーム３３が略上方に向く作業位置Ａ１、作業位置Ａ１よりも前方の下方に位置して予備苗載置部３９が略上方に向き、支持フレーム３３が斜め前方に向く補給位置Ａ２、及び作業位置Ａ１よりも後方の下方に位置して予備苗載置部３９が略上方に向き、支持フレーム３３が斜め後方に向く退避位置Ａ３に亘り、移動自在となっている。   With the above structure, as shown in FIGS. 4 (A), 4 (B) and 5, the preliminary seedling placement portion 39, the support frames 33 and 36, and the support link 34 are located on the lateral side of the front portion of the aircraft. The work position A1 where the preliminary seedling placement part 39 and the support frame 33 are directed substantially upward, the preliminary seedling placement part 39 is directed substantially upward with the forward seedling placement part 39 facing upward and the support frame 33 obliquely forward. The replenishment position A2 facing and the rear position lower than the work position A1, the preliminary seedling placement portion 39 is directed substantially upward, and the support frame 33 is moved to a retreat position A3 facing obliquely rearward. .

図３及び図７に示すように、トーションバー４４が支持フレーム３１と平行に備えられており、トーションバー４４の外側のクランクアーム部分４４ａが機体左右方向（トーションバー４４の捩じり方向と直交する方向）の上向きに曲げられて、トーションバー４４の外側のクランクアーム部分４４ａが支持フレーム３３に取り付けられている。図７及び図８に示すように、前フレーム１９に底板４２が固定され、側面視コ字状の板部材４３が底板４２に固定されている。トーションバー４４の内側の端部４４ｂが、底板４２と板部材４３との間に挿入されて突き合わされており、トーションバー４４の位置決め及び回り止めが行われている。   As shown in FIGS. 3 and 7, the torsion bar 44 is provided in parallel with the support frame 31, and the crank arm portion 44 a outside the torsion bar 44 is in the left-right direction of the machine body (perpendicular to the torsion direction of the torsion bar 44. The crank arm portion 44 a outside the torsion bar 44 is attached to the support frame 33 by being bent upward. As shown in FIGS. 7 and 8, a bottom plate 42 is fixed to the front frame 19, and a U-shaped plate member 43 is fixed to the bottom plate 42. An end 44b on the inner side of the torsion bar 44 is inserted and abutted between the bottom plate 42 and the plate member 43 so that the torsion bar 44 is positioned and prevented from rotating.

図７に示すように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の作業位置Ａ１から少し退避位置Ａ３側の位置において、トーションバー４４が自由状態となっており、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１から補給位置Ａ２側及び退避位置Ａ３側に移動すると、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４を作業位置Ａ１に付勢しようとする付勢力が、トーションバー４４に発生する。図５及び図７に示すように、支持部材３２に板状のストッパー部３２ａ，３２ｂが備えられている。トーションバー４４の外側のクランクアーム部分４４ａは、図３に示す位置よりも少し右（左）の横外方の位置において自由状態となっており、支持フレーム３３が図３に示す状態から右（左）の横外方に付勢されている。   As shown in FIG. 7, the torsion bar 44 is in a free state at a position slightly away from the work position A1 of the spare seedling placement portion 39, the support frames 33 and 36, and the support link 34, and the spare seedling is placed. When the placement portion 39, the support frames 33, 36, and the support link 34 move from the work position A1 to the replenishment position A2 side and the retreat position A3 side, the preliminary seedling placement portion 39, the support frames 33, 36, and the support link 34 work. An urging force for urging the position A1 is generated in the torsion bar 44. As shown in FIGS. 5 and 7, the support member 32 is provided with plate-like stopper portions 32 a and 32 b. The crank arm portion 44a outside the torsion bar 44 is in a free state at a laterally outward position slightly to the right (left) of the position shown in FIG. 3, and the support frame 33 is moved from the state shown in FIG. (Left) is biased laterally outward.

図６，９，１０に示すように、板材を側面視コ字状に折り曲げて構成された支持板４１が備えられて、右（左）の横外方に向く四角形状の開口部４１ａが、支持板４１に形成されている。上方に向く四角形状の開口部３５ａが、支持板３５に形成されている。円弧状の長孔４０ａが支持板４０に形成されており、長孔４０ａの下縁の中央部及び両端部に凹部４０ｂ，４０ｃ，４０ｄが形成され、長孔４０ａの上縁の中央部に凸部４０ｅが形成されている。丸パイプで形成された操作具４６が備えられており、操作具４６の両端部に握り部４６ａ，４６ｂが備えられ、操作具４６の中央部にリング部材４６ｃ及びロック部材４６ｄ、バネ受け部材４６ｅが固定されている。   As shown in FIGS. 6, 9, and 10, a support plate 41 configured by bending a plate material into a U-shape when viewed from the side is provided, and a rectangular opening 41 a facing right (left) laterally outward is provided. It is formed on the support plate 41. A rectangular opening 35 a facing upward is formed in the support plate 35. An arc-shaped long hole 40a is formed in the support plate 40. Recesses 40b, 40c, and 40d are formed at the center and both ends of the lower edge of the long hole 40a, and protruded at the center of the upper edge of the long hole 40a. A portion 40e is formed. An operation tool 46 formed of a round pipe is provided, grips 46a and 46b are provided at both ends of the operation tool 46, and a ring member 46c, a lock member 46d, and a spring receiving member 46e are provided at the center of the operation tool 46. Is fixed.

図６，９，１０に示すように、操作具４６が支持板３５の開口３５ａに入れられ、操作具４６のロック部材４６ｄが支持板４０の長孔４０ａに入れられて、支持板４１の開口部４１ａに操作具４６が入るように、支持板４１が支持板４０にボルト４５によって連結されており、操作具４６が支持板３５，４１に機体前後方向の軸芯Ｐ６周りに回転自在に支持されている。操作具４６のバネ受け部材４６ｅと支持板３５との間にバネ４７が備えられて、操作具４６がバネ４７により軸芯Ｐ６周りに図９の紙面反時計方向に付勢されている。   As shown in FIGS. 6, 9, and 10, the operation tool 46 is inserted into the opening 35 a of the support plate 35, and the lock member 46 d of the operation tool 46 is inserted into the long hole 40 a of the support plate 40. The support plate 41 is connected to the support plate 40 by bolts 45 so that the operation tool 46 enters the portion 41a, and the operation tool 46 is supported by the support plates 35 and 41 so as to be rotatable around the axis P6 in the longitudinal direction of the machine body. Has been. A spring 47 is provided between the spring receiving member 46e of the operation tool 46 and the support plate 35, and the operation tool 46 is urged around the axis P6 by the spring 47 in the counterclockwise direction in FIG.

図１，２，３，５に示すように、操作具４６が上下中央の予備苗載置部３９と略同じ高さに位置して、操作具４６が前方及び後方に延出され、操作具４６の前側の端部が上下中央の予備苗載置部３９の前部から前方に出ており、操作具４６の後側の端部が上下中央の予備苗載置部３９の後部から後方に出ている。操作具４６の前側の端部及び後側の端部が折り曲げられて握り部４６ａ，４６ｂが構成されており、操作具４６の前側及び後側の握り部４６ａ，４６ｂが機体左右方向で上下中央の予備苗載置部３９側に延出されている。これにより、図２及び図３に示すように、操作具４６の前側及び後側の握り部４６ａ，４６ｂが右及び左のステップ１０とは反対の右及び左の横外方に向く状態となっており、操作具４６の前側及び後側の握り部４６ａ，４６ｂが上下中央の予備苗載置部３９から右及び左の横外方に出ない状態となっている。   As shown in FIGS. 1, 2, 3, and 5, the operation tool 46 is positioned at substantially the same height as the preliminary seedling placement portion 39 in the upper and lower centers, and the operation tool 46 extends forward and rearward. The front end of 46 protrudes forward from the front of the preliminary seedling placement unit 39 in the upper and lower center, and the rear end of the operation tool 46 extends rearward from the rear of the preliminary seedling placement unit 39 in the upper and lower center. Out. The front end portion and the rear end portion of the operation tool 46 are bent to form grip portions 46a and 46b. The front and rear grip portions 46a and 46b of the operation tool 46 are vertically centered in the left-right direction of the body. It is extended to the preliminary seedling placement part 39 side. As a result, as shown in FIGS. 2 and 3, the front and rear grip portions 46 a and 46 b of the operation tool 46 are directed to the right and left lateral outwards opposite to the right and left steps 10. Thus, the grip portions 46a and 46b on the front side and the rear side of the operation tool 46 are in a state in which they do not protrude right and left laterally outward from the vertical seedling placement portion 39 at the center.

［４］
次に、予備苗のせ台の作業位置Ａ１、補給位置Ａ２及び退避位置Ａ３への移動、保持及び保持解除の操作について説明する。
図１及び図２、図５の実線に示す状態は、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に位置している状態であり、操作具４６及び上下中央の予備苗載置部３９が側面視で操縦ハンドル１１と略同じ高さに位置して少し下側に位置している。操作具４６の前側及び後側の握り部４６ａ，４６ｂが略水平な状態となり、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂに入り込んでおり、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に保持されている。 [4]
Next, operations for moving, holding, and releasing the holding of the reserve seedling platform to the work position A1, the replenishment position A2, and the retreat position A3 will be described.
The state shown by the solid lines in FIGS. 1, 2, and 5 is a state in which the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 are located at the work position A <b> 1. The preliminary seedling placement portion 39 is located at substantially the same height as the steering handle 11 in a side view and slightly below. The grip portions 46a and 46b on the front side and the rear side of the operation tool 46 are in a substantially horizontal state, the lock member 46d of the operation tool 46 enters the recess 40b of the support plate 40, and the preliminary seedling placement portion 39 and the support frame 33 , 36 and the support link 34 are held at the work position A1.

図５に示すように、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂに入り込んでいる状態において、操作具４６のロック部材４６ｄの上方に支持板４０の凸部４０ｅが位置する状態となっている。これにより操作具４６が単に図９の紙面時計方向に回転するだけでは、操作具４６のロック部材４６ｄが支持板４０の凸部４０ｅに接当するので、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂから出るようなことはない。   As shown in FIG. 5, in a state where the lock member 46 d of the operation tool 46 enters the recess 40 b of the support plate 40, a state where the convex portion 40 e of the support plate 40 is located above the lock member 46 d of the operation tool 46. It has become. As a result, simply rotating the operation tool 46 clockwise in FIG. 9 causes the lock member 46d of the operation tool 46 to come into contact with the convex portion 40e of the support plate 40, so that the lock member 46d of the operation tool 46 is supported by the support plate. It does not come out of the 40 recesses 40b.

前項［３］に記載のように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の作業位置Ａ１から少し退避位置Ａ３側の位置において、トーションバー４４が自由状態となっている。これにより、図５及び図７に示すように、予備苗載置部３９に所定数の苗が載置されていない状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１を越えて退避位置Ａ３に移動しようとしており、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂの前壁部に押し付けられた状態となって、操作具４６のロック部材４６ｄにおける支持板４０の凹部４０ｂでのガタ付きが抑えられている。   As described in [3] above, the torsion bar 44 is in a free state at a position slightly retracted from the work position A1 of the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34. . As a result, as shown in FIGS. 5 and 7, the spare seedling placement unit 39, the support frames 33 and 36, and the support link 34 can be used in a state where a predetermined number of seedlings are not placed on the preliminary seedling placement unit 39. In the state where it is located at the work position A1, the preliminary seedling placement portion 39, the support frames 33, 36, and the support link 34 are about to move to the retreat position A3 beyond the work position A1, and the lock member 46d of the operation tool 46 is used. Is pressed against the front wall of the recess 40b of the support plate 40, and the backlash of the lock member 46d of the operation tool 46 at the recess 40b of the support plate 40 is suppressed.

図１及び図２、図５の実線に示すように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に位置している状態において、操作具４６の前側又は後側の握り部４６ａ，４６ｂを持って操作具４６を図９の紙面時計方向に回転操作しながら、操作具４６を前方に操作すると（又は後方に操作すると）、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂから抜ける。これにより、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４をトーションバー４４に抗して斜め前方下方に移動させることにより、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４を図４（イ）及び図５の二点鎖線に示すように、作業位置Ａ１から補給位置Ａ２に移動させることができる。逆に予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４をトーションバー４４に抗して斜め後方下方に移動させることにより、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４を図４（ロ）及び図５の二点鎖線に示すように、作業位置Ａ１から退避位置Ａ３に移動させることができる。   As shown by the solid lines in FIGS. 1, 2, and 5, the front or rear of the operation tool 46 in the state where the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 are located at the work position A <b> 1. When the operating tool 46 is operated forward (or operated backward) while the operating tool 46 is rotated clockwise in FIG. 9 while holding the grip portions 46a and 46b on the side, the lock member 46d of the operating tool 46 is moved. The support plate 40 comes out of the recess 40b. Accordingly, the preliminary seedling placement unit 39 and the support frames 33 and 36 are supported by moving the preliminary seedling placement unit 39 and the support frames 33 and 36 and the support link 34 diagonally forward and downward against the torsion bar 44. The link 34 can be moved from the work position A1 to the replenishment position A2 as shown by the two-dot chain line in FIGS. Conversely, the preliminary seedling placement part 39, the support frames 33, 36, and the support link 34 are moved diagonally backward and downward against the torsion bar 44 by moving the preliminary seedling placement part 39, the support frames 33, 36, and the support link 34. 34 can be moved from the working position A1 to the retracted position A3, as indicated by a two-dot chain line in FIGS.

図４（イ）及び図５の二点鎖線に示すように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４を補給位置Ａ２に移動させた後、操作具４６の前側又は後側の握り部４６ａ，４６ｂを持って操作具４６を図９の紙面反時計方向に回転操作すると、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｃに入り込んで、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が補給位置Ａ２に保持される。図４（ロ）及び図５の二点鎖線に示すように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４を退避位置Ａ３に移動させた後、操作具４６の前側又は後側の握り部４６ａ，４６ｂを持って操作具４６を図９の紙面反時計方向に回転操作すると、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｄに入り込んで、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が退避位置Ａ３に保持される。   As shown by the two-dot chain line in FIGS. 4A and 5, after the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 are moved to the supply position A <b> 2, the front side or the rear side of the operation tool 46. When the operation tool 46 is rotated counterclockwise in FIG. 9 while holding the side grips 46 a and 46 b, the lock member 46 d of the operation tool 46 enters the recess 40 c of the support plate 40, and the preliminary seedling placement part 39. The support frames 33 and 36 and the support link 34 are held at the supply position A2. As shown by the two-dot chain line in FIGS. 4B and 5, after the preliminary seedling placement portion 39, the support frames 33 and 36, and the support link 34 are moved to the retracted position A <b> 3, the front side or the rear side of the operation tool 46. When the operation tool 46 is rotated counterclockwise in FIG. 9 while holding the grip portions 46a and 46b on the side, the lock member 46d of the operation tool 46 enters the recess 40d of the support plate 40, and the preliminary seedling placement part 39 The support frames 33 and 36 and the support link 34 are held at the retracted position A3.

前項［３］に記載のように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の作業位置Ａ１から少し退避位置Ａ３側の位置において、トーションバー４４が自由状態となっている。これにより、図４（イ）及び図５の二点鎖線に示すように、予備苗載置部３９に所定数の苗が載置されていない状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が補給位置Ａ２に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に移動しようとしており、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｃの前壁部に押し付けられた状態となって、操作具４６のロック部材４６ｄにおける支持板４０の凹部４０ｃでのガタ付きが抑えられている。   As described in [3] above, the torsion bar 44 is in a free state at a position slightly retracted from the work position A1 of the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34. . As a result, as shown by the two-dot chain line in FIGS. 4 (a) and 5, the preliminary seedling placement unit 39 and the support frame 33 in a state where a predetermined number of seedlings are not placed on the preliminary seedling placement unit 39. 36, the support link 34 is located at the replenishment position A2, the preliminary seedling placement portion 39, the support frames 33, 36, and the support link 34 are about to move to the work position A1, and the lock member of the operation tool 46 46d is pressed against the front wall portion of the recess 40c of the support plate 40, and the backlash of the lock member 46d of the operation tool 46 at the recess 40c of the support plate 40 is suppressed.

これにより、図４（ロ）及び図５の二点鎖線に示すように、予備苗載置部３９に所定数の苗が載置されていない状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が退避位置Ａ３に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に移動しようとしており、前述と同様に操作具４６のロック部材４６ｄが支持板４０の凹部４０ｄの後壁部に押し付けられた状態となって、操作具４６のロック部材４６ｄにおける支持板４０の凹部４０ｄでのガタ付きが抑えられている。   As a result, as shown by the two-dot chain lines in FIGS. 4 (b) and 5, the preliminary seedling placement unit 39 and the support frame 33 in a state where a predetermined number of seedlings are not placed on the preliminary seedling placement unit 39. , 36, and the support link 34 are in the retracted position A3, the preliminary seedling placement portion 39, the support frames 33, 36, and the support link 34 are about to move to the work position A1, and the operation tool is the same as described above. The lock member 46d of 46 is pressed against the rear wall portion of the recess 40d of the support plate 40, and the backlash at the recess 40d of the support plate 40 of the lock member 46d of the operation tool 46 is suppressed.

図４（イ）及び図５の二点鎖線に示すように、予備苗載置部３９の所定数以上の苗が載置された状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が補給位置Ａ２に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の重量並びに苗の重量にトーションバー４４が負けて、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が斜め前方下方に移動しようとし、支持フレーム３３が支持部材３２のストッパー部３２ａに接当して、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が補給位置Ａ２に位置する。
この場合、支持フレーム３３が支持部材３２のストッパー部３２ａに接当している状態において、操作具４６のロック部材４６ｄは支持板４０の凹部４０ｃの中央に位置しており、支持板４０の凹部４０ｃの前及び後壁部に押し付けられた状態にはならない。 As shown by the two-dot chain line in FIG. 4 (a) and FIG. 5, in a state where a predetermined number of seedlings or more of the preliminary seedling placement section 39 are placed, the preliminary seedling placement section 39 and the support frames 33, 36, In a state where the support link 34 is located at the replenishment position A2, the torsion bar 44 loses the weight of the preliminary seedling placement unit 39, the support frames 33 and 36, the support link 34, and the weight of the seedling, and the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 try to move obliquely forward and downward, the support frame 33 comes into contact with the stopper portion 32a of the support member 32, and the preliminary seedling placement portion 39 and the support frames 33 and 36, The support link 34 is located at the supply position A2.
In this case, when the support frame 33 is in contact with the stopper portion 32 a of the support member 32, the lock member 46 d of the operation tool 46 is located at the center of the recess 40 c of the support plate 40, and the recess of the support plate 40 is It is not pressed against the front and rear walls of 40c.

図４（ロ）及び図５の二点鎖線に示すように、予備苗載置部３９に所定数以上の苗が載置された状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が退避位置Ａ３に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の重量並びに苗の重量にトーションバー４４が負けて、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が斜め後方下方に移動しようとし、支持フレーム３３が支持部材３２のストッパー部３２ｂに接当して、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が退避位置Ａ３に位置する。
この場合、支持フレーム３３が支持部材３２のストッパー部３２ｂに接当している状態において、操作具４６のロック部材４６ｄは支持板４０の凹部４０ｄの中央に位置しており、支持板４０の凹部４０ｄの前及び後壁部に押し付けられた状態にはならない。 As shown by the two-dot chain line in FIG. 4 (b) and FIG. 5, in a state where a predetermined number or more of seedlings are placed on the spare seedling placement portion 39, the preliminary seedling placement portion 39 and the support frames 33, 36, In a state where the support link 34 is located at the retreat position A3, the torsion bar 44 loses the weight of the preliminary seedling placement unit 39, the support frames 33 and 36, the support link 34, and the weight of the seedling, and the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 try to move obliquely backward and downward, the support frame 33 comes into contact with the stopper portion 32b of the support member 32, and the preliminary seedling placement portion 39 and the support frames 33 and 36, The support link 34 is located at the retracted position A3.
In this case, when the support frame 33 is in contact with the stopper portion 32 b of the support member 32, the lock member 46 d of the operation tool 46 is located at the center of the recess 40 d of the support plate 40, and the recess of the support plate 40 is It is not pressed against the front and rear walls of 40d.

図３に示すように、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４に対して、支持板４０が内方側に位置しており、支持板４０の長孔４０ａから操作具４６のロック部材４６ｄが内方側に突出している。これにより、運転座席８から斜め前方に支持板４０及び操作具４６のロック部材４６ｄが位置しており、運転座席８から支持板４０及び操作具４６のロック部材４６ｄを目視することが容易に行える。操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂ，４０ｃ，４０ｄに入り込んでいることを目視することにより、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の保持状態を認識することができ、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂ，４０ｃ，４０ｄから出ていることを目視することにより、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の保持解除状態を認識することができる。   As shown in FIG. 3, the support plate 40 is located on the inner side with respect to the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34, and the operation tool is inserted from the long hole 40 a of the support plate 40. A lock member 46d of 46 projects inward. Accordingly, the support plate 40 and the lock member 46d of the operation tool 46 are positioned obliquely forward from the driver seat 8, and the support plate 40 and the lock member 46d of the operation tool 46 can be easily visually observed from the driver seat 8. . By visually observing that the lock member 46d of the operation tool 46 has entered the recesses 40b, 40c, and 40d of the support plate 40, the holding state of the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 is recognized. By visually observing that the lock member 46d of the operation tool 46 protrudes from the recesses 40b, 40c, 40d of the support plate 40, the preliminary seedling placement portion 39, the support frames 33, 36, and the support link 34 are displayed. Can be recognized.

［発明の実施の別形態］
前述の［発明を実施するための最良の形態］において、図１及び図３に示す支持フレーム３６を、上下中央の予備苗載置部３９から下方のみの短いもの（上下中央の予備苗載置部３９から上方の部分を削除したもの）に構成してもよい。このように構成すると、支持フレーム３６に２個の予備苗載置部３９を備えることになる。操作具４６のロック部材４６ｄとは別に、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の保持状態及び保持解除状態を表示する表示部（図示せず）を、図３，６，９に示す支持板４１の上面に備えるように構成してもよい。 [Another Embodiment of the Invention]
In the above-mentioned [Best Mode for Carrying Out the Invention], the support frame 36 shown in FIGS. 1 and 3 is short only from the upper / lower central preliminary seedling mounting portion 39 (upper / lower central preliminary seedling mounting). The upper part may be deleted from the part 39). If comprised in this way, the support frame 36 will be provided with the two preliminary seedling mounting parts 39. FIG. In addition to the lock member 46d of the operation tool 46, a display unit (not shown) for displaying the reserve seedling placement unit 39, the support frames 33 and 36, and the holding state and the holding release state of the support link 34 is shown in FIGS. , 9 may be provided on the upper surface of the support plate 41.

前述の［発明を実施するための最良の形態］において、図６，９，１０に示す支持フレーム３３を作業位置Ａ１及び補給位置Ａ２、退避位置Ａ３に保持及び保持解除する構造（支持板４０、支持板４０の長孔４０ａ、凹部４０ｂ，４０ｃ，４０ｄ、凸部４０ｅ、操作具４６のロック部材４６ｄ等）を、支持フレーム３３の基部や支持部材３２に備えるように構成してもよい。操作具４６を支持フレーム３３ではなく、支持フレーム３６に備えるように構成してもよい。   In the above-mentioned [Best Mode for Carrying Out the Invention], a structure (support plate 40, 10) that holds and releases the support frame 33 shown in FIGS. 6, 9, and 10 at the work position A1, the supply position A2, and the retracted position A3. A long hole 40a, concave portions 40b, 40c and 40d, a convex portion 40e, a lock member 46d of the operation tool 46, and the like of the support plate 40 may be provided in the base portion of the support frame 33 and the support member 32. The operation tool 46 may be provided in the support frame 36 instead of the support frame 33.

前述の［発明を実施するための最良の形態］の前項［４］において、図５及び図７に示すように予備苗載置部３９の全てに苗が載置されていない状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１を越えて退避位置Ａ３に移動し、操作具４６のロック部材４６ｄが支持板４０の凹部４０ｂの前壁部に押し付けられた状態となるように構成してもよい。同様に予備苗載置部３９の全てに苗が載置されていない状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が補給位置Ａ２（退避位置Ａ３）に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が作業位置Ａ１に移動しようとするように構成してもよい。   In the preceding item [4] of [Best Mode for Carrying Out the Invention], as shown in FIG. 5 and FIG. In a state where the placement portion 39, the support frames 33, 36, and the support link 34 are located at the work position A1, the preliminary seedling placement portion 39, the support frames 33, 36, and the support link 34 are retracted beyond the work position A1. You may comprise so that it may move to position A3 and the lock member 46d of the operation tool 46 may be in the state pressed against the front wall part of the recessed part 40b of the support plate 40. FIG. Similarly, in a state where no seedlings are placed on all of the spare seedling placement units 39, the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 are positioned at the replenishment position A2 (retreat position A3). In this state, the preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 may be configured to move to the work position A1.

前述の［発明を実施するための最良の形態］の前項［４］において、図４（イ）及び図５の二点鎖線に示すように、予備苗載置部３９の全てに苗が載置された状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が補給位置Ａ２に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の重量並びに苗の重量にトーションバー４４が負けて、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が斜め前方下方に移動しようとし、支持フレーム３３が支持部材３２のストッパー部３２ａに接当して、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が補給位置Ａ２に位置するように構成してもよい。
図４（ロ）及び図５の二点鎖線に示すように、予備苗載置部３９の全てに苗が載置された状態で、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が退避位置Ａ３に位置している状態において、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４の重量並びに苗の重量にトーションバー４４が負けて、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が斜め後方下方に移動しようとし、支持フレーム３３が支持部材３２のストッパー部３２ｂに接当して、予備苗載置部３９及び支持フレーム３３，３６、支持リンク３４が退避位置Ａ３に位置するように構成してもよい。 In the preceding item [4] of the above-mentioned [Best Mode for Carrying Out the Invention], as shown by the two-dot chain line in FIG. 4 (A) and FIG. In the state where the preliminary seedling placement unit 39, the support frames 33, 36, and the support link 34 are located at the replenishment position A2, the preliminary seedling placement unit 39, the support frames 33, 36, and the support link 34 are The torsion bar 44 loses the weight and the weight of the seedling, and the preliminary seedling placement portion 39, the support frames 33 and 36, and the support link 34 try to move diagonally forward and downward, and the support frame 33 moves to the stopper portion 32a of the support member 32. The preliminary seedling placement unit 39, the support frames 33 and 36, and the support link 34 may be configured so as to be positioned at the replenishment position A2.
As shown by the two-dot chain line in FIGS. 4B and 5, the seedling placement unit 39, the support frames 33 and 36, and the support link in a state where seedlings are placed on all of the spare seedling placement unit 39. In the state where 34 is located at the retreat position A3, the torsion bar 44 loses the weight of the preliminary seedling placement unit 39, the support frames 33 and 36, the support link 34, and the weight of the seedling, and the preliminary seedling placement unit 39 and The support frames 33 and 36 and the support link 34 try to move obliquely backward and downward, the support frame 33 comes into contact with the stopper portion 32b of the support member 32, and the preliminary seedling placement portion 39, the support frames 33 and 36, and the support link 34 may be configured to be located at the retracted position A3.

乗用型田植機の全体側面図Overall side view of riding rice transplanter 乗用型田植機の全体平面図Overall plan view of riding rice transplanter 乗用型田植機の全体正面図Overall front view of riding rice transplanter 予備苗載置部及び支持フレーム、支持リンクを補給位置及び退避位置に移動させた状態を示す側面図The side view which shows the state which moved the preliminary seedling mounting part, the support frame, and the support link to the supply position and the retracted position 予備苗載置部及び支持フレーム、支持リンクの付近の側面図Side view of the spare seedling placement part, support frame and support link 支持フレームの上部及び操作具の付近の分解斜視図An exploded perspective view of the upper part of the support frame and the vicinity of the operation tool 支持フレームの下部及び支持部材の付近の横断平面図Transverse plan view of the lower part of the support frame and the vicinity of the support member 図７をＸ−Ｘ方向から見た縦断側面図Longitudinal side view of FIG. 7 viewed from the XX direction 支持フレームの上部及び操作具の付近の縦断背面図Longitudinal rear view of the upper part of the support frame and the vicinity of the operation tool 支持フレームの上部及び操作具の付近の横断平面図Transverse plan view of the upper part of the support frame and the vicinity of the operation tool

符号の説明Explanation of symbols

３２ａ ストッパー部
３３ 支持フレーム
３９ 予備苗載置部
４４ 付勢機構、補助付勢機構、トーションバー
４６ｄ ロック機構
Ａ１ 作業位置
Ａ２ 補給位置
Ｐ２ 機体左右方向の横軸芯 32a Stopper part 33 Support frame 39 Preliminary seedling placement part 44 Energizing mechanism, auxiliary energizing mechanism, torsion bar 46d Locking mechanism A1 Work position A2 Replenishment position P2 Horizontal axis in the horizontal direction of the machine

Claims (5)

機体左右方向の横軸芯周りに前後に揺動自在な支持フレームを、運転部の前側の横側部に備え、苗を載置する複数の予備苗載置部を前記支持フレームに備えて、
前記支持フレームを、機体の前部の横側部に位置して起立した作業位置、作業位置よりも前方に位置して斜め前方に向く補給位置に亘って移動自在に構成し、前記支持フレームを作業位置及び補給位置で保持及び保持解除自在なロック機構を備えると共に、
前記支持フレームを作業位置に付勢する付勢機構を備えて、
前記複数の予備苗載置部に所定数以上の苗が載置された状態で、前記支持フレームが補給位置に移動させられると、前記支持フレームが補給位置に位置するように、前記付勢機構の付勢力を設定してある乗用型田植機の予備苗のせ台構造。 A support frame that can swing back and forth around the horizontal axis in the horizontal direction of the machine body is provided on the lateral side portion on the front side of the operation unit, and a plurality of preliminary seedling placement parts for placing seedlings are provided on the support frame,
The support frame is configured to be movable over a standing work position located on the lateral side of the front part of the machine body, and a replenishment position located forward of the work position and facing diagonally forward. With a lock mechanism that can be held and released at the work position and the replenishment position,
A biasing mechanism for biasing the support frame to a working position;
When the support frame is moved to the replenishment position in a state where a predetermined number of seedlings are placed on the plurality of preliminary seedling placement units, the urging mechanism is arranged so that the support frame is located at the replenishment position. A stand seedling structure for a riding type rice transplanter that has been set to have a biasing force. 前記支持フレームが補給位置を越えて前方に揺動することを止めるストッパー部を備えて、
前記複数の予備苗載置部に所定数以上の苗が載置された状態で、前記支持フレームが補給位置に移動させられると、前記支持フレームがストッパー部に接当することによって、前記支持フレームが補給位置に位置するように構成してある請求項１に記載の乗用型田植機の予備苗のせ台構造。 A stopper portion for stopping the support frame from swinging forward beyond the replenishment position;
When the support frame is moved to the replenishment position in a state where a predetermined number of seedlings are placed on the plurality of preliminary seedling placement parts, the support frame comes into contact with the stopper part, whereby the support frame The stand structure of the preliminary seedling of the riding type rice transplanter according to claim 1, which is configured to be positioned at a replenishment position. 前記複数の予備苗載置部に所定数の苗が載置されていない状態で、前記付勢機構により支持フレームが作業位置を越えて後方に移動させられるように、前記付勢機構の付勢力を設定してある請求項１又は２に記載の乗用型田植機の予備苗のせ台構造。   The urging force of the urging mechanism so that the urging mechanism can move the support frame backward beyond the working position in a state where a predetermined number of seedlings are not placed on the plurality of preliminary seedling placement parts. The setting structure of the reserve seedling of the riding type rice transplanter according to claim 1 or 2. 前記支持フレームを機体左右方向に押し操作する補助付勢機構を備えてある請求項１〜３のうちのいずれか一つに記載の乗用型田植機の予備苗のせ台構造。   The preliminary seedling setting structure of the riding type rice transplanter according to any one of claims 1 to 3, further comprising an auxiliary biasing mechanism that pushes and operates the support frame in a horizontal direction of the machine body. 機体の下部から機体の横外方に延出されたトーションバーを前記支持フレームに取り付けることによって、前記トーションバーにより前記付勢機構及び補助付勢機構を構成してある請求項１〜４のうちのいずれか一つに記載の乗用型田植機の予備苗のせ台構造。   The urging mechanism and the auxiliary urging mechanism are constituted by the torsion bar by attaching a torsion bar extending from the lower part of the body to the laterally outer side of the body to the support frame. The stand seedling structure of the riding type rice transplanter according to any one of the above.
JP2003332127A 2003-09-24 2003-09-24 Spare seedling stand structure for riding type rice transplanter Expired - Fee Related JP4763963B2 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009112248A (en) * 2007-11-06 2009-05-28 Kubota Corp Reserve seedling-loading platform structure of riding type rice transplanter
JP2009268437A (en) * 2008-05-09 2009-11-19 Kubota Corp Riding-type working vehicle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003102221A (en) * 2001-09-27 2003-04-08 Kubota Corp Spare seedling container for riding type rice transplanter
JP2003189714A (en) * 2001-12-25 2003-07-08 Kubota Corp Reserve seedling receiving unit of sulky-type rice transplanting machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003102221A (en) * 2001-09-27 2003-04-08 Kubota Corp Spare seedling container for riding type rice transplanter
JP2003189714A (en) * 2001-12-25 2003-07-08 Kubota Corp Reserve seedling receiving unit of sulky-type rice transplanting machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009112248A (en) * 2007-11-06 2009-05-28 Kubota Corp Reserve seedling-loading platform structure of riding type rice transplanter
JP2009268437A (en) * 2008-05-09 2009-11-19 Kubota Corp Riding-type working vehicle

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