JP4200493B2 - Rice transplanter - Google Patents

Rice transplanter Download PDF

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JP4200493B2
JP4200493B2 JP2004081777A JP2004081777A JP4200493B2 JP 4200493 B2 JP4200493 B2 JP 4200493B2 JP 2004081777 A JP2004081777 A JP 2004081777A JP 2004081777 A JP2004081777 A JP 2004081777A JP 4200493 B2 JP4200493 B2 JP 4200493B2
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rear wheel
wheels
turning
pedal
wheel
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JP2005263131A (en
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善嗣 岡本
智 岸本
宏政 幡上
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Minoru Industrial Co Ltd
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Description

本発明は、前輪と後輪で往復走行して所要の作業を行う乗用田植機に関するものである。 The present invention relates to a riding planting machine back and forth traveling in front wheels and the rear wheels perform the required work.

現在、水田に苗の植付作業を行う乗用田植機は、走行する土壌が軟弱であることから走行安定性を考慮して後輪を２輪から４輪に増やしたものが提供されている。図６は一般的な乗用田植機１を示し、機体２の前方に設けた２つの前輪３と、機体２の後方に設けた４つの後輪４と、機体２の中央に配置された３つの植付部５とを備えており、最外の後輪４ａは最外の植付部５よりも外側に配置されている。   Currently, a rice paddy planter that performs seedling planting work on paddy fields is provided in which the rear wheels are increased from two to four in consideration of running stability because the running soil is soft. FIG. 6 shows a general passenger rice transplanter 1, two front wheels 3 provided in front of the body 2, four rear wheels 4 provided in the rear of the body 2, and three arranged in the center of the body 2. The outermost rear wheel 4 a is arranged outside the outermost planting part 5.

この乗用田植機１で苗の植付作業を行い水田を往復走行する際には、植付領域と畔との間の枕地で機体２の旋回を行う必要があるが、旋回のために機体２を前後に切り返して次列の植付位置の調節をしたりせずに、ワンアクションでＵターンをしようとすれば、図７に示すように、内輪側の後輪４Ａが支点となって旋回する必要がある。
そうすると、支点となる後輪４Ａの位置する土壌には過度の負荷や捻れが加わるので、すり鉢状の穴が開いたり土盛り等ができてしまうと共に、近傍に植え付けられていた苗を倒してしまう問題が発生する。よって、正常に植付作業を行おうとすれば、結局、枕地での旋回時にオーバランして機体２を切り返して位置調節をしなければならず、旋回作業が１工程で行えず作業性を低下させてしまう。 When planting seedlings with this riding rice transplanter 1 and traveling back and forth in a paddy field, it is necessary to turn the body 2 at the headland between the planting area and the shore. If one tries to make a U-turn without turning back and forth 2 and adjusting the planting position in the next row, as shown in FIG. 7, the rear wheel 4A on the inner ring side serves as a fulcrum. Need to turn.
Then, since excessive load and twist are added to the soil where the rear wheel 4A serving as a fulcrum is located, a mortar-shaped hole is formed or a heap is formed, and the seedling planted in the vicinity is overthrown. Will occur. Therefore, if the planting work is to be carried out normally, it will eventually be overrun when turning on the headland and the body 2 must be turned back to adjust the position, making the turning work impossible in one step and reducing workability. I will let you.

なお、特開平５−３０４８１０号公報に開示された苗植機は、４つの後輪の間の後方に２条分の苗植付位置を設定して、既に植え付けた苗を後輪で踏み付けないようにしているが、内輪側の後輪を支点として旋回しようとすれば、該後輪から土壌へ過度の負荷が掛かり、土壌に穴を開けたり土盛り等して土壌を荒らしてしまうことには変わりがない。
特開平５−３０４８１０号公報 In addition, the seedling planting machine disclosed in Japanese Patent Laid-Open No. 5-304810 sets a seedling planting position for two strips behind the four rear wheels, and does not step on the already planted seedlings with the rear wheels. However, if an attempt is made to turn with the rear wheel on the inner ring side as a fulcrum, excessive load will be applied to the soil from the rear wheel, and the soil will be roughened by making holes in the soil or filling in the soil. There is no change.
JP-A-5-304810

本発明は、上記問題に鑑みてなされたもので、機体旋回時において、作業性を低下させず土壌を荒らすことなく旋回できるようにすることを課題としている。   This invention is made | formed in view of the said problem, and makes it a subject to be able to turn without deteriorating workability | operativity at the time of a body turning, and without ruining soil.

上記課題を解決するため、本発明は、前輪および並列配置する４輪の後輪に支持された機体と、前記並列配置される各後輪に挟まれる位置の前方で且つ前記機体の前後方向の中央部に支持される植付部を備え、圃場に往復走行させる乗用田植機であって、
前記４輪の後輪は駆動源で回転駆動される駆動輪であり、
前記４輪の後輪のうち、左右最外後輪をそれぞれ昇降させるシリンダあるいはモータで駆動される昇降手段を備え、
右旋回時と左旋回時に夫々最内輪となる前記左右最外後輪のいずれか一方を上昇させる構成としていることを特徴とする田植機を提供している。 To solve the above problems, the present invention includes a front wheel and a body supported on the rear wheels of the four wheels to be arranged in parallel, longitudinal direction of and the machine body in front of the position sandwiched to each rear wheel is the parallel arrangement A riding rice transplanter comprising a planting part supported in the center part and reciprocating to a farm field,
The four rear wheels are drive wheels that are rotationally driven by a drive source;
Elevating means driven by a cylinder or motor for raising and lowering the left and right outermost rear wheels among the four rear wheels ,
There is provided a rice transplanter characterized in that either one of the left and right outermost rear wheels, which is the innermost wheel when turning right and turning left, is raised .

前記構成とすると、田植機が水田等の圃場を走行して枕地で旋回する際に、最内輪の後輪を支点として旋回しても、昇降手段により当該後輪を持ち上げて土壌から浮かすことで、当該後輪による土壌へ過剰の負荷が無くなり（あるいは低減され）、土壌の穴あきや土盛りにより苗が倒れるのを防止することができる。したがって、枕地での旋回時にオーバランして機体を切り返す等しなくてもワンアクションでＵターンでき作業性も向上する。
さらには、旋回支点となる内輪の後輪が接地しないことにより、主に外輪側の車輪の駆動力を使って旋回することとなるので、機体の回転半径が小さくなり小回りすることができる利点もある。 When the configuration, when the planting machine is pivoted in the field of traveling headland such paddy, be pivoted as a fulcrum rear wheels innermost annulus, floats the rear wheel from the soil by lifting by the lifting means This eliminates (or reduces) an excessive load on the soil caused by the rear wheel, and prevents the seedling from falling due to the perforation or soil filling of the soil. Therefore, it is possible to make a U-turn with one action without overrunning when turning at the headland and turning the machine back, and the workability is improved.
Advantages Further, by not grounding the rear wheels of the inner wheel as a fulcrum, mainly because the to pivot with a driving force of the wheels of the outer ring side, which can be rotated radius of the aircraft is adaptable reduced There is also.

前記昇降手段は前記機体に設けられた運転席側の操作手段と連繋されて自動的に駆動されるシリンダあるいはモータを備え、該昇降手段により前記後輪の少なくとも左右最外後輪を夫々昇降させ、右旋回時と左旋回時に夫々対応する後輪の内輪側を上昇させる構成としている。   The elevating means includes a cylinder or a motor that is automatically driven in conjunction with an operation means on the driver's seat provided in the airframe, and raises and lowers at least the left and right outermost rear wheels of the rear wheels by the elevating means. The inner wheel side of the rear wheel corresponding to turning right and turning left is raised.

具体的には、前記昇降手段は電動シリンダとすると共に、前記運転席側の前記操作手段はペダルとし、電動シリンダは運転席に設けられた前記ペダルに連動され、
機体旋回時に前記ペダルを踏むことで前記電動シリンダが動作して前記内輪側の最外後輪を上昇させる一方、前記ペダルの踏み込みを解除することで前記電動シリンダは前記内輪側の最外後輪を降下させる構成としていると好ましい。 Specifically, the elevating means is an electric cylinder, the operating means on the driver's seat side is a pedal, and the electric cylinder is interlocked with the pedal provided in the driver's seat,
When the pedal is stepped on, the electric cylinder is operated to raise the outermost rear wheel on the inner ring side, and by releasing the pedal, the electric cylinder is moved to the outermost rear wheel on the inner ring side. It is preferable to adopt a configuration for lowering.

前記構成とすると、圃場の枕地において機体を旋回させる際に前記ペダルを踏むことに連動して旋回支点となる内輪側の最外後輪がシリンダ等により土壌から浮かされるので、当該後輪により土壌が乱されるのが防止される。また、旋回終了時にペダルの踏み込みをやめることで当該後輪が降下して接地され、安定的走行を確保することができる。しかも、昇降手段となるシリンダ等への指令は足でペダルを踏むことで行っているので、旋回時にハンドル操作を行うことで塞がった両手を使用せずにすむので、操作性が良好となる。
なお、前記ペダルは、旋回時に内輪側の後輪の駆動力をオフするクラッチペダルと兼用する構成とすれば、運転者の操作量が増えるのを防止することができ好適である。
また、前記昇降手段は、ペダルと電気的に連動される電動シリンダとする構成の他にも、ペダルと機械的に連動されて最外後輪を昇降させる構造としてもよいことは言うまでもない。 With the above configuration, the outermost rear wheel on the inner ring side, which becomes a turning fulcrum in conjunction with stepping on the pedal when turning the aircraft on the headland in the field, is floated from the soil by a cylinder or the like. The soil is prevented from being disturbed. Further, by stopping the pedal depression at the end of turning, the rear wheel is lowered and grounded, and stable running can be ensured. In addition, since the command to the cylinder or the like as the lifting / lowering means is performed by stepping on the pedal with a foot, it is not necessary to use both hands closed by operating the steering wheel during turning, so that the operability is improved.
Note that it is preferable that the pedal be used also as a clutch pedal that turns off the driving force of the rear wheel on the inner wheel side when turning, because it is possible to prevent the amount of operation of the driver from increasing.
Further, it goes without saying that the elevating means may have a structure that elevates and lowers the outermost rear wheel mechanically interlocked with the pedal, in addition to the configuration of the electric cylinder electrically interlocked with the pedal.

以上の説明より明らかなように、本発明によれば、作業機が枕地で旋回する際に、昇降手段により最内輪の後輪を持ち上げて土壌から浮かすことができるので、当該後輪を支点として旋回しても土壌への過負荷が無くなり、土壌の穴あきや土盛りにより苗が倒れるのを防止できる。さらに、内輪側の後輪が接地しないことにより、主に外輪側の車輪の駆動力を使って旋回することとなるので、機体の回転半径が小さくなり小回りできる利点もある。 As apparent from the above description, according to the present invention, when the working machine to pivot headland, the lifting means it is possible to float from the soil to lift the rear wheel of the innermost wheel, the rear wheel Even if it turns as a fulcrum, there is no overload on the soil, and it is possible to prevent the seedling from falling down due to the perforation or filling of the soil. Further, since the rear wheel on the inner ring side does not come into contact with the ground, the vehicle mainly turns using the driving force of the wheel on the outer ring side, so there is an advantage that the turning radius of the fuselage can be reduced and the vehicle can make a small turn.

本発明の実施形態を図面を参照して説明する。
図１は作業機である田植機１０を示している。田植機１０は、機体１１と、機体１１の前方を支持する２つの前輪１２と、機体１１の後方を支持する４つの後輪１３（１３Ａ〜１３Ｄ）と、機体１１中央に配置された植付部１４と、植付部１４の上方に搭載された苗箱供給装置１７と、機体１１の所定位置に設置された予備苗台１８と、機体１１前方の駆動源１６と、機体１１後方の運転席１５と、最外に位置する外後輪１３Ａ、１３Ｄを昇降させる昇降手段２６とを備えている。なお、外後輪１３Ａ、１３Ｄは植付部１４よりも外側に位置している。 Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a rice transplanter 10 which is a working machine. The rice transplanter 10 includes a body 11, two front wheels 12 that support the front of the body 11, four rear wheels 13 (13 </ b> A to 13 </ b> D) that support the rear of the body 11, and planting disposed in the center of the body 11. Part 14, seedling box supply device 17 mounted above planting part 14, spare seedling stand 18 installed at a predetermined position of body 11, drive source 16 in front of body 11, and operation behind body 11 A seat 15 and an elevating means 26 for elevating and lowering the outer rear wheels 13A and 13D located on the outermost side are provided. The outer rear wheels 13A and 13D are located outside the planting portion 14.

後輪１３への動力伝達機構は、図２に示すように左右対称であるので代表して機体左側（図２では右側）の外後輪１３Ａおよび内後輪１３Ｂについて説明する。
まず、駆動源１６から動力を後輪ミッション２０まで伝達する。この後輪ミッション２０から内後輪伝動ケース２１内の伝動チェーンを介して内後輪１３Ｂを回転駆動させる。また、外後輪１３Ａへの動力伝達は、後輪ミッション２０から外後輪ミッション２２、ケース支点部２３、外後輪伝動ケース２４を介して外後輪１３Ａの回転軸３０を回転駆動させている。なお、外後輪伝動ケース２４は、ケース支点部２３を支点として外後輪１３Ａとの接続側を揺動可能としている。 Since the power transmission mechanism to the rear wheel 13 is symmetrical as shown in FIG. 2, the outer rear wheel 13A and the inner rear wheel 13B on the left side (right side in FIG. 2) will be described as a representative.
First, power is transmitted from the drive source 16 to the rear wheel mission 20. The inner rear wheel 13B is rotationally driven from the rear wheel transmission 20 through the transmission chain in the inner rear wheel transmission case 21. Further, the power transmission to the outer rear wheel 13A is performed by rotating the rotary shaft 30 of the outer rear wheel 13A from the rear wheel mission 20 via the outer rear wheel mission 22, the case fulcrum 23, and the outer rear wheel transmission case 24. Yes. The outer rear wheel transmission case 24 can swing on the connection side with the outer rear wheel 13A with the case fulcrum 23 as a fulcrum.

昇降手段２６は、図２および図４に示すように、モータ２８によりロッド２７ａが往復される電動シリンダ２７をフレーム２５に固定して設けており、外後輪伝動ケース２４の後端に固定された上下作動アーム２９の先端２９ａに電動シリンダ２７のロッド２７ａの先端を回転自在に固定している。
上下作動アーム２９は、図５に示すように、側方に突出する突出棒３３が設けられており、機体壁３４の円弧状のスリット３４ａに貫通している。スリット３４ａの上端側には上限リミットスイッチ３５が設置されている一方、スリット３４ａの下端側には下限リミットスイッチ３６が設置されている。 As shown in FIGS. 2 and 4, the elevating means 26 is provided with an electric cylinder 27 in which a rod 27 a is reciprocated by a motor 28 fixed to the frame 25, and is fixed to the rear end of the outer rear wheel transmission case 24. The tip of the rod 27a of the electric cylinder 27 is rotatably fixed to the tip 29a of the vertical operating arm 29.
As shown in FIG. 5, the vertical operation arm 29 is provided with a projecting bar 33 projecting sideways, and penetrates the arc-shaped slit 34 a of the body wall 34. An upper limit switch 35 is installed on the upper end side of the slit 34a, while a lower limit switch 36 is installed on the lower end side of the slit 34a.

運転席１５には、図２および図３に示すように、左サイドクラッチペダル３１および右サイドクラッチペダル４０を設けている。左サイドクラッチペダル３１を踏むと、左側の外後輪１３Ａが昇降手段２６により持ち上げられると共に、外後輪ミッション２２の動力伝達が遮断される構成としている。右サイドクラッチペダル４０を踏むと、右側の外後輪１３Ｄが昇降手段２６により持ち上げられると共に、外後輪１３Ｄへの動力伝達が遮断される構成としている。
なお、運転席１５にはメインスイッチが設けられ、このメインスイッチがオンの状態で上記のように右・左サイドクラッチペダル３１、４０に連動して昇降手段２６が動作する一方、メインスイッチをオフとすると、右・左サイドクラッチペダル３１、４０を踏んでも昇降手段２６が動作しないようになっている。 As shown in FIGS. 2 and 3, the driver's seat 15 is provided with a left side clutch pedal 31 and a right side clutch pedal 40. When the left side clutch pedal 31 is stepped on, the left outer rear wheel 13A is lifted by the elevating means 26 and the power transmission of the outer rear wheel transmission 22 is cut off. When the right side clutch pedal 40 is depressed, the right outer rear wheel 13D is lifted by the lifting means 26 and the power transmission to the outer rear wheel 13D is cut off.
The driver's seat 15 is provided with a main switch. When the main switch is on, the elevating means 26 operates in conjunction with the right / left side clutch pedals 31 and 40 as described above, while the main switch is turned off. Then, even if the right and left side clutch pedals 31 and 40 are stepped on, the elevating means 26 does not operate.

このように、左サイドクラッチペダル３１および右サイドクラッチペダル４０の作用は左右対称であるので、以下は左サイドクラッチペダル３１について代表して説明する。
左サイドクラッチペダル３１は、図３に示すように、ロッド部３１ａの先端３１ｂを機体壁３９に軸支していると共に、ロッド部３１ａの後端にペダル部３１ｃを設けている。ロッド部３１ａには外後輪ミッション２２の接続／遮断を切り替えるためのワイヤ３８が連結されている。
また、運転席１５の床には、左後輪１３Ａを昇降させる昇降手段２６のモータ２８を駆動させる昇降用スイッチ３２を設置しており、本体部３２ｂから突出した揺動レバー３２ａをロッド部３１ａの下方に配置している。 Thus, since the actions of the left side clutch pedal 31 and the right side clutch pedal 40 are bilaterally symmetric, the left side clutch pedal 31 will be described below as a representative.
As shown in FIG. 3, the left side clutch pedal 31 pivotally supports the tip 31b of the rod portion 31a on the body wall 39, and is provided with a pedal portion 31c at the rear end of the rod portion 31a. A wire 38 for switching connection / disconnection of the outer rear wheel transmission 22 is connected to the rod portion 31a.
Further, on the floor of the driver's seat 15, a lifting switch 32 for driving the motor 28 of the lifting / lowering means 26 that lifts and lowers the left rear wheel 13A is installed, and the swing lever 32a protruding from the main body 32b is connected to the rod 31a. It is arranged below.

次に、田植機１０の作用について説明する。
田植機１０が水田を走行して枕地で左旋回する際に、運転席１５のオペレータが左サイドクラッチペダル３１を踏むことで、図３に示すように、下降するロッド部３１ａが昇降用スイッチ３２の揺動レバー３２ａを押し下げ、揺動レバー３２ａの下降をトリガーとして本体部３２ｂからモータ２８に駆動指令が出される。モータ２８は、電動シリンダ２７を駆動させてロッド部２７ａを下方に延出させることにより、上下作動アーム２９の先端２９ａが下降させられ、ケース支点部２３を支点として外後輪伝動ケース２４が揺動し、外後輪１３Ａが持ち上げられる。そして、図５に示すように、上下作動アーム２９の突出棒３３がスリット３４ａの下端まで移動すると、突出棒３３が下限リミットスイッチ３６に接触してモータ２８が停止させられる。 Next, the operation of the rice transplanter 10 will be described.
When the rice transplanter 10 runs on the paddy field and turns left on the headland, the operator of the driver's seat 15 depresses the left side clutch pedal 31, and as shown in FIG. A drive command is issued from the main body 32b to the motor 28 with the lowering of the swing lever 32a of 32 and the lowering of the swing lever 32a as a trigger. The motor 28 drives the electric cylinder 27 to extend the rod portion 27a downward, whereby the tip 29a of the vertical operation arm 29 is lowered, and the outer rear wheel transmission case 24 swings with the case fulcrum portion 23 as a fulcrum. The outer rear wheel 13A is lifted. Then, as shown in FIG. 5, when the protruding bar 33 of the vertical operation arm 29 moves to the lower end of the slit 34a, the protruding bar 33 contacts the lower limit switch 36 and the motor 28 is stopped.

なお、この際、ペダル部３１ｃの踏み込みによるロッド部３１ａと下降と同時に、ワイヤ３８が下降され、外後輪ミッション２２の駆動伝達が遮断されて、外後輪１３Ａの回転が停止されるようになっている。   At this time, the wire 38 is lowered simultaneously with the lowering of the rod portion 31a due to the depression of the pedal portion 31c, the drive transmission of the outer rear wheel transmission 22 is interrupted, and the rotation of the outer rear wheel 13A is stopped. It has become.

一方、田植機１０の旋回が終了してオペレータが左サイドクラッチペダル３１のペダル部３１ｃの踏み込みをやめると、ロッド部３１ａが上昇することにより昇降用スイッチ３２の揺動レバー３２ａが上昇し、この揺動レバー３２ａの上昇をトリガーとして本体部３２ｂからモータ２８に駆動指令が出され、電動シリンダ２７のロッド部２７ａを上方に縮ませる。これにより、上下作動アーム２９の先端２９ａが上昇させられ、ケース支点部２３を支点として外後輪伝動ケース２４が揺動し、外後輪１３Ａが下降して接地される。そして、上下作動アーム２９の突出棒３３がスリット３４ａの上端まで移動すると、突出棒３３が上限リミットスイッチ３５に接触してモータ２８が停止させられる。   On the other hand, when the turning of the rice transplanter 10 is finished and the operator stops the depression of the pedal portion 31c of the left side clutch pedal 31, the rod portion 31a rises, and the swing lever 32a of the lifting switch 32 rises. A drive command is issued from the main body 32b to the motor 28 using the rising of the swing lever 32a as a trigger, and the rod 27a of the electric cylinder 27 is contracted upward. As a result, the tip 29a of the vertical operation arm 29 is raised, the outer rear wheel transmission case 24 is swung with the case fulcrum 23 as a fulcrum, and the outer rear wheel 13A is lowered and grounded. When the protruding bar 33 of the vertical operation arm 29 moves to the upper end of the slit 34a, the protruding bar 33 comes into contact with the upper limit switch 35 and the motor 28 is stopped.

以上より、田植機１０が水田を走行して枕地付近で旋回する際に、内輪側の外後輪１３Ａを支点として旋回しても、サイドクラッチペダル３１の踏み込みに連動して旋回支点となる外後輪１３Ａを持ち上げて土壌から浮かすことにより、外後輪１３Ａによる土壌への過剰な負荷が無くなり、土壌の穴あきや土盛りにより苗が倒れるのを防止することができる。よって、枕地での旋回時に機体１１の切り返し動作等をしなくても、土壌荒れを気にすることなくワンアクションでＵターンでき作業性も向上する。   As described above, when the rice transplanter 10 travels on the paddy field and turns around the headland, even if turning with the outer rear wheel 13A on the inner ring side as a fulcrum, it becomes a turning fulcrum in conjunction with the depression of the side clutch pedal 31. By lifting the outer rear wheel 13A and floating it from the soil, there is no excessive load on the soil by the outer rear wheel 13A, and it is possible to prevent the seedling from falling due to the perforation or buildup of the soil. Therefore, even if the airframe 11 is not turned over when turning at the headland, a U-turn can be performed with one action without worrying about soil roughness, and workability is improved.

また、昇降手段２６への指令は足でペダル部３１ｃを踏むことで行っているので、オペレータは旋回時にハンドル１９操作により塞がった両手を使用せずに済み、操作性も良好となる。さらには、内輪側の外後輪１３Ａが接地しないことにより、主に外輪側の後輪１３Ｂ〜１３Ｄの駆動力を使って旋回されて小回りも利く。また、サイドクラッチペダル３１は、旋回時に内輪側の後輪１３Ａの駆動力をオフする機能と兼用させているので、オペレータの操作量が増えるのを防止できる。
また、後輪１３Ａを昇降させる駆動源は電動シリンダ２７に限定されず、ラックとピニオンによりモータの回転運動を往復運動に変換して後輪１３Ａを昇降させる構成とするなどしてもよい。 Further, since the command to the elevating means 26 is made by stepping on the pedal portion 31c with a foot, the operator does not have to use both hands closed by the operation of the handle 19 during turning, and the operability is also improved. Further, since the outer rear wheel 13A on the inner ring side does not come into contact with the ground, the vehicle is turned mainly by using the driving force of the rear wheels 13B to 13D on the outer ring side, and the small turning is also effective. Further, since the side clutch pedal 31 is also used as a function of turning off the driving force of the rear wheel 13A on the inner wheel side when turning, it is possible to prevent the operator's operation amount from increasing.
Also, the drive source for elevating the rear wheel 13A is not limited to the electric cylinder 27, rack and the rotary motion of the motor may be such a structure for elevating the rear wheel 13A is converted into a reciprocating motion by a pinion.

本発明の実施形態の田植機の側面図である。It is a side view of the rice transplanter of the embodiment of the present invention. 田植機の要部上面図である。It is a principal part top view of a rice transplanter. クラッチペダルを示す要部斜視図である。It is a principal part perspective view which shows a clutch pedal. 後輪の昇降を説明する図面である。It is drawing explaining raising / lowering of a rear wheel. 昇降手段の要部拡大図である。It is a principal part enlarged view of the raising / lowering means. 従来例の田植機を示す図面である。It is drawing which shows the rice transplanter of a prior art example. 問題点を示す図面である。It is drawing which shows a problem.

符号の説明Explanation of symbols

１０ 田植機
１１ 機体
１２ 前輪
１３ 後輪
１３Ａ 外後輪
１４ 植付部
１５ 運転席
１６ 駆動源
１７ 自動供給装置
１８ 予備苗台
２０ 後輪ミッション
２１ 内後輪伝動ケース
２２ 外後輪ミッション
２３ ケース支点部
２４ 外後輪伝動ケース
２６ 昇降手段
２７ 電動シリンダ
２７ａ ロッド
２８ モータ
２９ 上下作動アーム
３１ 左サイドクラッチペダル
３２ 昇降用スイッチ
３３ 突出棒
３４ａ スリット
３５ 上限リミットスイッチ
３６ 下限リミットスイッチ 10 rice transplanter
11 Airframe 12 Front wheel 13 Rear wheel 13A Outer rear wheel 14 Planting part 15 Driver's seat 16 Drive source 17 Automatic supply device 18 Spare seedling stand 20 Rear wheel transmission 21 Inner rear wheel transmission case 22 Outer rear wheel mission 23 Case fulcrum part 24 Outside Rear wheel transmission case 26 Elevating means 27 Electric cylinder 27a Rod 28 Motor 29 Vertical operation arm 31 Left side clutch pedal 32 Elevating switch 33 Protruding bar 34a Slit 35 Upper limit switch 36 Lower limit switch

Claims (2)

前輪および並列配置する４輪の後輪に支持された機体と、前記並列配置される各後輪に挟まれる位置の前方で且つ前記機体の前後方向の中央部に支持される植付部を備え、圃場に往復走行させる乗用田植機であって、
前記４輪の後輪は駆動源で回転駆動される駆動輪であり、
前記４輪の後輪のうち、左右最外後輪をそれぞれ昇降させるシリンダあるいはモータで駆動される昇降手段を備え、
右旋回時と左旋回時に夫々最内輪となる前記左右最外後輪のいずれか一方を上昇させる構成としていることを特徴とする田植機。 Comprising a body supported on the rear wheels of the four wheels to the front wheels and parallel arrangement, the planting platform supported by the central portion in the front-rear direction of the forward and the aircraft position sandwiched to each rear wheel is the parallel arrangement A riding rice transplanter that travels back and forth in the field,
The four rear wheels are drive wheels that are rotationally driven by a drive source;
Elevating means driven by a cylinder or motor for raising and lowering the left and right outermost rear wheels among the four rear wheels ,
A rice transplanter characterized in that either one of the left and right outermost rear wheels, which is the innermost wheel when turning right and turning left, is raised . 該昇降手段として電動シリンダを備え、該電動シリンダは運転席に設けられたペダルからなる操作手段に連動され、機体旋回時に前記ペダルを踏むことで前記電動シリンダが動作して前記内輪側の最外後輪を上昇させる一方、前記ペダルの踏み込みを解除することで前記電動シリンダは前記内輪側の最外後輪を降下させる構成としている請求項１に記載の田植機。 An electric cylinder is provided as the elevating means, and the electric cylinder is interlocked with an operating means including a pedal provided at the driver's seat, and the electric cylinder is operated by stepping on the pedal when the vehicle is turning so that the outermost wheel on the inner ring side is operated. 2. The rice transplanter according to claim 1 , wherein the electric cylinder lowers the outermost rear wheel on the inner ring side by raising the rear wheel while releasing the pedal .
JP2004081777A 2004-03-22 2004-03-22 Rice transplanter Expired - Fee Related JP4200493B2 (en)

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JP2004081777A JP4200493B2 (en) 2004-03-22 2004-03-22 Rice transplanter

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JP2005263131A JP2005263131A (en) 2005-09-29
JP4200493B2 true JP4200493B2 (en) 2008-12-24

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