JP2008289416A

JP2008289416A - Vegetable harvester

Info

Publication number: JP2008289416A
Application number: JP2007138024A
Authority: JP
Inventors: Isao Ishida; 石田　　伊佐男; Hajime Odagiri; 小田切　　元; Shingo Takagi; 高木　　真吾; Takaaki Iwabe; 岩部　　孝章; Masao Inada; 誠生稲田
Original assignee: Iseki and Co Ltd; Iseki Agricultural Machinery Mfg Co Ltd
Current assignee: Iseki and Co Ltd; Iseki Agricultural Machinery Mfg Co Ltd
Priority date: 2007-05-24
Filing date: 2007-05-24
Publication date: 2008-12-04
Anticipated expiration: 2027-05-24
Also published as: JP5012212B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a root vegetable harvester capable of carrying out stable harvesting and traveling, while suppressing tilting to the right or the left of a machine body caused by ridge grooves, without causing side drop of an orbiting crawler, when harvesting root vegetables grown by high-ridge cultivation. <P>SOLUTION: The root vegetable harvester is equipped with a traveling device 1 in an endless track type constituted, by winding on the supporting rotating wheels 3 to 6 the orbiting crawler 9, having a width size W reaching from the side edges of supporting rotating wheels 3 to 6 installed in a row to the outside of the machine body; and an uprooting and conveying device P for uprooting the root vegetables vegetating in a field, and installed in right or left one side of the machine body traveling in the field by the traveling device 1. A front outside assistant wheel 11 is installed in the traveling device 1, on the outside of the machine body from the side edges of the supporting rotating wheels 3 to 6. The front outside assistant wheel 11 is arranged at a position regulated so that the distance L1 between the front outside assistant wheel 11 and the supporting rotating wheel 3 for grounding the orbiting crawler 9 to the field at the front side of the traveling device 1 becomes smaller than the distance L2 between the front outside assistant wheel 11 and the supporting rotating wheel 4 which adjoins the rear part of the supporting rotating wheel 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、周回履帯による無限軌道式の左右の走行装置と圃場から作物を収穫する引抜搬送装置とを備える根菜類収穫機に関するものである。 The present invention relates to a root crop harvesting machine including an endless track type left and right traveling device using a crawler crawler belt and a pulling and conveying device for harvesting a crop from a field.

無限軌道式の左右の走行装置と引抜搬送装置とを備える根菜類収穫機が知られている。この根菜類収穫機の左右の走行装置は、例えば、特許文献１に示すように、機体の前後方向に並ぶ複数の支持転輪によりその側端外方に及ぶ幅寸法を有する周回履帯を介して機体を支持する。 2. Description of the Related Art A root crop harvesting machine including an endless track type left and right traveling device and a pulling and conveying device is known. As shown in Patent Document 1, for example, as shown in Patent Document 1, the left and right traveling devices of the root vegetable harvesting machine are connected via a circumferential crawler belt having a width dimension extending outward from the side end thereof by a plurality of support rollers arranged in the front-rear direction of the machine body. Support the aircraft.

上記根菜類収穫機は、引抜搬送装置側の走行装置が、引抜搬送装置が作物を引き抜いた後方でその支持転輪により周回履帯を介して機体を走行支持し.他側の走行装置が、前回の走行で収穫済みの畝上に機体を走行支持し、これら左右の走行装置の前進動作と協調して引抜搬送装置が圃場から根菜類を引き抜きつつ機体後部に送ることにより収穫走行をすることができる。 In the above root vegetable harvesting machine, the traveling device on the pulling and conveying device side supports the machine through the crawler crawler by the supporting rolling wheel behind the crop that the pulling and conveying device pulled out the crop. It is possible to run and harvest by supporting the aircraft on the harvested baskets in the running of the vehicle, and in cooperation with the forward movement of these left and right traveling devices, the pulling and conveying device pulls root vegetables from the field and sends them to the rear of the aircraft. it can.

また、走行装置の支持転輪は、その幅方向長さを畝溝の幅より狭い所定の長さ範囲に規制することにより、畝条と畝溝の起伏を有する圃場において、周回履帯の中心から離れた位置で走行支持した場合の周回履帯の横ずれによる側方脱落を防止することができる。
特開２００５−１９２４２６号公報 Further, the supporting wheels of the traveling device are controlled from the center of the crawler crawler belt in a field having ridges and undulations of the ridges by restricting the length in the width direction to a predetermined length range narrower than the width of the ridges. It is possible to prevent the side drop-out due to the lateral displacement of the crawler crawler belt when traveling and supported at a distant position.
JP 2005-192426 A

しかしながら、ニンジン等の高畝圃場における根菜類の収穫に際しては、走行装置の支持転輪が畝条から外れて畝溝に落ち込み、機体が車幅方向に大きく傾斜することから、収穫走行が不安定となるという問題があった。 However, when root vegetables such as carrots are harvested in the high vineyard field, the support wheel of the traveling device is detached from the ridge and falls into the ridge, and the aircraft is greatly inclined in the vehicle width direction, which makes the harvesting and traveling unstable. There was a problem of becoming.

本発明は、ニンジン等の高畝栽培による根菜類の収穫に際して、周回履帯の側方脱落を招くことなく、畝溝による機体の左右傾斜を抑えて安定した収穫作業走行を可能とする根集類収穫機を提供することにある。 The present invention, when harvesting root vegetables such as carrots and the like by high-altitude cultivation, without causing a side drop of the crawler crawler belt, the roots that enable a stable harvesting operation by suppressing the horizontal inclination of the aircraft due to the gutter groove To provide a harvesting machine.

請求項１の発明は、機体の前後方向に並ぶ複数の支持転輪（３〜６）に、該支持転輪（３〜６）の側端よりも機体外側に及ぶ幅寸法（Ｗ）を有する周回履帯（９）を巻回して構成する無限軌道式の走行装置（１）と、該走行装置（１）により圃場を走行する機体の左右一側に圃場に植生する根菜類を引き抜き機体後部へ搬送する引抜搬送装置（Ｐ）とを備える根菜類収穫機において、前記走行装置（１）に支持転輪（３〜６）の側端よりも機体外側に前外側補助輪（１１）を設け、該前外側補助輪（１１）は前外側補助輪（１１）と走行装置（１）の前側で周回履帯（９）を圃場に接地させる支持転輪（３）との距離（Ｌ１）が前外側補助輪（１１）と支持転輪（３）の後方に隣接する支持転輪（４）との距離（Ｌ２）よりも短くなる位置に配置したことを特徴とする根菜類収穫機とした。 In the first aspect of the present invention, the plurality of supporting rollers (3 to 6) arranged in the front-rear direction of the airframe have a width dimension (W) extending from the side end of the supporting wheels (3 to 6) to the outside of the airframe. An endless track type traveling device (1) formed by winding a crawler crawler belt (9), and root vegetables planted on the field are pulled out to the left and right sides of the body traveling on the field by the traveling device (1) to the rear of the body. In a root crop harvesting machine provided with a pulling and conveying device (P) for conveying, the traveling device (1) is provided with a front outer auxiliary wheel (11) on the outer side of the machine body from the side ends of the supporting rollers (3 to 6), The front outer auxiliary wheel (11) has a distance (L1) between the front outer auxiliary wheel (11) and the supporting wheel (3) for grounding the crawler crawler belt (9) to the field on the front side of the traveling device (1). At a position shorter than the distance (L2) between the auxiliary wheel (11) and the supporting wheel (4) adjacent to the rear of the supporting wheel (3). Was Root crop harvester, characterized in that the location.

前記根菜類収穫機は、支持転輪（３〜６）の回転により地面に接地する幅広の周回履帯（９）が移動する走行装置（１）により走行するものであり、この支持転輪（３〜６）の側端よりも機体外側方に配置した前外側補助輪（１１）が作業中の畝条の端部に接触する場合あるいは隣接の畝条の端部に接触する場合、前外側補助輪（１１）が周回履帯（９）に接触して押圧するので、周回履帯（９）の端部が作業中の畝条の端部あるいは隣接の畝条の端部に接触して機体を支持することができる。
また、圃場の起伏や石等により周回履帯（９）が撓んでも、走行装置（１）の前側で周回履帯（９）を圃場に接地させる支持転輪（３）が周回履帯（９）を後方に送ると共に、周回履帯（９）が横ずれし始める前に前外側補助輪（１１）が周回履帯（９）を後方に送るため、周回履帯（９）の脱落を防止することができる。 The root vegetable harvesting machine is driven by a traveling device (1) in which a wide crawler crawler belt (9) that comes in contact with the ground moves by rotation of the supporting rollers (3 to 6). -6) When the front outer auxiliary wheel (11) arranged on the outer side of the machine body is in contact with the end of the working rib or the end of the adjacent rib, the front outer auxiliary Since the ring (11) contacts and presses the crawler crawler belt (9), the end of the crawler crawler belt (9) comes into contact with the end of the working rib or the end of the adjacent rib to support the aircraft. can do.
Further, even if the orbital crawler belt (9) is bent due to undulations or stones in the field, the supporting wheel (3) for grounding the orbital crawler belt (9) to the field on the front side of the traveling device (1) causes the orbital crawler belt (9) to move. Since the front outer auxiliary wheel (11) sends the circumferential crawler belt (9) to the rear before the circumferential crawler belt (9) starts to slip laterally, the circumferential crawler belt (9) can be prevented from falling off.

請求項２の発明は、前記走行装置（１）は、支持転輪（３〜６）の側端よりも機体外側に後外側補助輪（１２）を設け、該後外側補助輪（１２）は後外側補助輪（１２）と走行装置（１）の後側で周回履帯（９）を圃場に接地させる支持転輪（６）との距離（Ｌ３）が後外側補助輪（１２）と支持転輪（６）の前方に隣接する支持転輪（５）との距離（Ｌ４）よりも短くなる位置に配置したことを特徴とする請求項１記載の根菜類収穫機とした。
前記根菜類収穫機は、支持転輪（３〜６）の側端よりも機体外側方に配置した後外側補助輪（１２）が作業中の畝条の端部に接触する場合あるいは隣接の畝条の端部に接触する場合、後外側補助輪（１２）が周回履帯（９）に接触して押圧するので、周回履帯（９）の端部が作業中の畝条の端部あるいは隣接の畝条の端部に接触して機体を支持することができる。
また、圃場の起伏や石等により周回履帯（９）が撓んでも、後外側補助輪（１２）が周回履帯（９）を後方に送ると共に、周回履帯（９）が横ずれし始める前に走行装置（１）の後側で周回履帯（９）を圃場に接地させる支持転輪（６）が周回履帯（９）を後方に送るため、周回履帯（９）の脱落を防止することができる。 According to a second aspect of the present invention, the traveling device (1) is provided with a rear outer auxiliary wheel (12) on the outer side of the machine body from the side ends of the supporting wheels (3-6), and the rear outer auxiliary wheel (12) The distance (L3) between the rear outer auxiliary wheel (12) and the supporting wheel (6) that grounds the crawler crawler belt (9) on the rear side of the traveling device (1) is equal to the rear outer auxiliary wheel (12). The root crop harvesting machine according to claim 1, wherein the root vegetable harvesting machine is arranged at a position shorter than a distance (L4) from a support roller (5) adjacent to the front of the ring (6).
The root vegetable harvesting machine is arranged when the rear auxiliary wheel (12) arranged on the outer side of the machine body from the side edge of the supporting rollers (3 to 6) comes into contact with the end of the working ridge or adjacent ridges. When contacting the end of the strip, the rear outer auxiliary wheel (12) contacts and presses the circular crawler belt (9), so the end of the circular crawler belt (9) The aircraft can be supported by contacting the end of the ridge.
Further, even if the orbital crawler belt (9) is bent due to undulations or stones in the field, the rear outer auxiliary wheel (12) sends the orbital crawler belt (9) to the rear and travels before the orbital crawler belt (9) starts to slip laterally. Since the supporting roller (6) for grounding the crawler crawler belt (9) to the field on the rear side of the device (1) sends the crawler crawler belt (9) backward, it is possible to prevent the crawler crawler belt (9) from falling off.

請求項１の発明は、前外側補助輪（１１）が支持転輪（３〜６）の側端よりも機体外側に配置されていることにより、走行装置（１）の支持転輪（３〜６）が畝溝上を通過する場合でも、前外側補助輪（１１）が周回履帯（９）の端部を作業中の畝条の端部あるいは隣接の畝条の端部に接触させて機体を支持することができるので、機体が畝溝方向に傾くことが無く、機体の走行や根菜類の引抜作業が安定する。
また、圃場の起伏や石等により周回履帯（９）が撓んでも、周回履帯（９）が横ずれし始める前に走行装置（１）の前側で周回履帯（９）を圃場に接地させる支持転輪（３）と前外側補助輪（１１）とが周回履帯（９）を後方に移送するため、周回履帯（９）の脱落を防止することができるので、作業が中断されることが防止されると共に、周回履帯（９）の脱落による機体の横転等の事故を防止でき、安全性が向上する。 According to the first aspect of the present invention, the front and outer auxiliary wheels (11) are arranged on the outer side of the body with respect to the side ends of the supporting rollers (3 to 6). 6) Even if it passes over the gutter groove, the outer front auxiliary wheel (11) brings the end of the crawler crawler belt (9) into contact with the end of the working ridge or the end of the adjacent ridge. Since it can be supported, the aircraft does not tilt in the grooving direction, and the running of the aircraft and the extraction of root vegetables are stabilized.
Further, even if the orbital crawler belt (9) is bent due to undulations or stones in the field, the supporting crawler belt (9) is grounded to the field on the front side of the traveling device (1) before the orbital crawler belt (9) starts to laterally shift. Since the wheel (3) and the front outer auxiliary wheel (11) transfer the orbital crawler belt (9) to the rear, it is possible to prevent the orbital crawler belt (9) from falling off, thereby preventing the work from being interrupted. In addition, it is possible to prevent accidents such as rollover of the aircraft due to falling off of the crawler crawler belt (9), and safety is improved.

請求項２の発明は、請求項１の発明に加え、後外側補助輪（１２）が支持転輪（３〜６）の側端よりも機体外側に配置されていることにより、走行装置（１）の支持転輪（３〜６）が畝溝上を通過する場合でも、後外側補助輪（１２）が周回履帯（９）の端部を作業中の畝条の端部あるいは隣接の畝条の端部に接触させて機体を支持することができるので、機体が畝溝方向に傾くことが無く、機体の走行や根菜類の引抜作業が安定する。
また、圃場の起伏や石等により周回履帯（９）が撓んでも、周回履帯（９）が横ずれし始める前に後外側補助輪（１２）と走行装置（１）の後側で周回履帯（９）を圃場に接地させる支持転輪（６）とが周回履帯（９）を後方に移送するため、周回履帯（９）の脱落を防止することができるので、作業が中断されることが防止されると共に、周回履帯（９）の脱落による機体の横転等の事故を防止でき、安全性が向上する。 According to the invention of claim 2, in addition to the invention of claim 1, the rear outer auxiliary wheel (12) is arranged on the outer side of the body with respect to the side end of the supporting wheel (3-6). ) Even if the supporting wheels (3-6) pass over the ridge groove, the rear outer auxiliary wheel (12) moves the end of the crawler crawler belt (9) to the end of the ridge or the adjacent ridge. Since the airframe can be supported by contacting the end, the airframe does not tilt in the grooving direction, and the traveling of the airframe and the extraction of root vegetables are stabilized.
Further, even if the orbital crawler belt (9) bends due to undulations, stones, etc. in the field, the orbital crawler belt (12) and the traveling device (1) on the rear side of the crawler crawler belt (9) before the circumferential crawler belt (9) starts to slip laterally ( 9) Since the supporting roller (6) that contacts the field is transported to the crawler crawler belt (9) rearward, it is possible to prevent the crawler crawler belt (9) from falling off, thereby preventing the work from being interrupted. In addition, it is possible to prevent accidents such as the rollover of the aircraft due to the fall of the crawler crawler belt (9), and the safety is improved.

本発明の実施の形態について、以下に図面に基づいて詳細に説明する。
本発明の構成例に係る野菜収穫機は、機体を走行させる無限軌道式の左右の走行装置１と、機体の左右一側に搭載した引抜搬送装置Ｐとを備えて構成され、該引抜搬送装置Ｐが圃場に植生する根菜類を引き抜き、機体後部へ搬送するものである、 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
The vegetable harvesting machine according to the configuration example of the present invention is configured to include an endless track type left and right traveling device 1 for traveling the airframe, and a pulling and conveying device P mounted on the left and right sides of the airframe. P pulls out the root vegetables planted in the field and transports them to the rear of the machine.

（走行装置）
上記走行装置1は、詳細には、その左側面図および要部平面図を図１、図２に夫々示すように、機体フレーム２の前後方向に並ぶ複数軸（図例は４軸）の支持転輪３〜６とミッション軸から動力を受ける駆動ホイール７をクローラフレーム８に軸支し、これら支持転輪３〜６および駆動ホイール７を周回履帯９によって巻回する。
この周回履帯９は肉厚のゴム材に芯金を埋め込んで駆動ホイール７と咬み合うように駆動構成され、支持転輪３〜６の側端の外側方に及ぶ所定の幅寸法Ｗに形成する。 (Running device)
Specifically, the traveling device 1 supports a plurality of axes (four axes in the illustrated example) arranged in the front-rear direction of the body frame 2 as shown in FIGS. A driving wheel 7 that receives power from the wheels 3 to 6 and the transmission shaft is pivotally supported on the crawler frame 8, and the supporting wheels 3 to 6 and the driving wheel 7 are wound around the circumferential crawler belt 9.
The circumferential crawler belt 9 is configured so as to be engaged with the drive wheel 7 by embedding a core metal in a thick rubber material, and is formed to have a predetermined width dimension W extending outward from the side ends of the support rollers 3 to 6. .

上記支持転輪３〜６の外側位置には、前端の第１支持転輪３から後端の第４支持転輪６までの間の範囲で周回履帯９の幅Ｗ内に前後外側補助輪１１，１２を設け、これら前後外側補助輪１１,１２を支持する補助フレーム１３を同様に周回履帯９の幅内に構成する。前側の外側補助輪１１は、前端位置の第１支持転輪３の近傍、すなわち、支持接地位置について第１支持転輪３の接地位置までの距離Ｌ１がその隣接支持転輪４の崖地位置までの距離Ｌ２以下の範囲に、また、後側の外側補助輪１２は、後端位置の第４支持転輪６の近傍、すなわち第４支持転輪６の接地位置までの距離Ｌ３がその隣接支持転輪５の設置位置までの距離Ｌ４以下の範囲に配置する。 The front and rear outer auxiliary wheels 11 are located within the width W of the crawler crawler belt 9 in the range from the first support roller 3 at the front end to the fourth support roller 6 at the rear end. , 12 and an auxiliary frame 13 that supports these front and rear outer auxiliary wheels 11, 12 is similarly configured within the width of the crawler crawler belt 9. The front outer auxiliary wheel 11 is located near the first support roller 3 at the front end position, that is, the distance L1 from the support grounding position to the ground contact position of the first support wheel 3 is the cliff position of the adjacent support wheel 4. And the rear outer auxiliary wheel 12 is adjacent to the rear end position of the fourth support wheel 6, that is, the distance L3 to the ground contact position of the fourth support wheel 6. It arrange | positions in the range below the distance L4 to the installation position of the support roller 5.

上記前後外側補助輪１１，１２は、平坦面で周回履帯９の接地面内側に接触しないように、支持転輪３〜６よりも僅かに高い位置に配置する。また、周回履帯９が撓んだ際の損傷を防止するべく、前後外側補助輪１１，１２の踏面外側端はテーパ形状に形成してもよい。また、補助フレーム１３を周回履帯９が撓んで接触しないように前後外側補助輪１１，１２の軸位置より高く配置する。 The front and rear outer auxiliary wheels 11 and 12 are arranged at a slightly higher position than the support rollers 3 to 6 so as not to come into contact with the ground contact surface inside of the crawler crawler belt 9 on a flat surface. Further, in order to prevent damage when the crawler crawler belt 9 is bent, the outer ends of the treads of the front and rear outer auxiliary wheels 11 and 12 may be tapered. Further, the auxiliary frame 13 is disposed higher than the axial position of the front and rear outer auxiliary wheels 11 and 12 so that the crawler crawler belt 9 does not bend and contact.

上記構成の走行装置１は、支持転輪３〜６より外側位置に前後外側補助輪１１，１２が周回履帯９の接地面内側に接触することなく配置されていることにより、支持転輪３〜６が畝溝上を走行する際、前後外側補助輪１１，１２が作業中の畝条の端部、あるいは隣接の畝条の端部に周回履帯９を押圧して接地させるので、機体が畝溝方向に傾くことが防止され、機体の走行姿勢や根菜類の引抜作業姿勢が安定し、作業能率や安全性が向上する。 In the traveling device 1 having the above-described configuration, the front and rear outer auxiliary wheels 11 and 12 are arranged at positions outside the support rollers 3 to 6 without contacting the inside of the ground contact surface of the crawler crawler belt 9. When the vehicle 6 runs on the ridge groove, the front and rear outer auxiliary wheels 11 and 12 press the crawler crawler belt 9 against the end of the ridge or the adjacent ridge of the work, so that the machine body is in the ridge groove. Inclination in the direction is prevented, the running posture of the aircraft and the pulling out posture of root vegetables are stabilized, and work efficiency and safety are improved.

また、周回履帯９が撓んでも、後述のように周回履帯９が横ずれし始める前に第１支持転輪３と前外側補助輪１１及び第４支持転輪６と後外側補助輪１２とが周回履帯９を後方に移動させるため、そのまま走行を続けても周回履帯９の側方脱落が防止され、且つ補助フレーム１３を高位置に構成していることにより、周回履帯９が補助フレーム１３に接触することによる損傷や後触制動に伴う根菜類の引き抜きタイミングのずれを防止することができるので、機体の走行姿勢や引抜作業姿勢が安定する。そして、周回履帯９の幅内に前後外側補助輪１１，１２および補助フレーム１３を構成することにより、未堀り側の作物との接触による根菜類の損傷を防止することができ、作物の商品価値が向上する。 Further, even if the crawler crawler belt 9 is bent, the first support wheel 3, the front outer auxiliary wheel 11, the fourth support wheel 6, and the rear outer auxiliary wheel 12 are not connected before the crawler crawler belt 9 starts to be laterally displaced as will be described later. Since the crawler crawler belt 9 is moved backward, the crawler crawler belt 9 is prevented from falling off from the side even if the vehicle continues to travel, and the auxiliary frame 13 is configured at a high position. Since it is possible to prevent damage due to contact and deviation of the extraction timing of root vegetables due to post-tact braking, the traveling posture and the pulling work posture of the machine body are stabilized. And, by configuring the front and rear outer auxiliary wheels 11 and 12 and the auxiliary frame 13 within the width of the crawler crawler belt 9, it is possible to prevent root vegetables from being damaged due to contact with uncultivated crops. Value is improved.

前記前外側補助輪１１と第１支持転輪３とを所定距離Ｌ１に配置することにより、周回履帯９が横ずれして外れることを防止することができる。すなわち、第1支持転輪３は周回履帯９を下に向かって引っ張られていることから、その張力の分力により周回履帯９が横ずれして外れることが防止される。また、前外側補助輪１１は通常走行時には必要ないため、周回履帯９の接地面内側より僅かに上方に取付けることにより、前外側補助輪１１と補助フレーム１３にかかる負担を減らすことができるとともに、通常走行時は周回履帯９と非接触であるため、周回履帯９の摩耗を軽減することができ、機体の耐久性が向上する。
また、前外側補助輪１１が周回履帯９と接触していないことにより、前外側補助輪１１の取付け及び取外しが容易となり、機体のメンテナンス性が向上する。 By arranging the front outer auxiliary wheel 11 and the first support roller 3 at a predetermined distance L1, it is possible to prevent the circumferential crawler belt 9 from slipping off and coming off. That is, since the first support roller 3 is pulled downward around the crawler crawler belt 9, it is possible to prevent the crawler crawler belt 9 from being laterally displaced due to the component force of the tension. In addition, since the front outer auxiliary wheel 11 is not necessary during normal travel, it can be attached slightly above the inner surface of the crawler crawler belt 9 to reduce the burden on the front outer auxiliary wheel 11 and the auxiliary frame 13. Since it is not in contact with the orbital crawler belt 9 during normal traveling, the wear of the orbital crawler belt 9 can be reduced, and the durability of the aircraft is improved.
Further, since the front outer auxiliary wheel 11 is not in contact with the crawler crawler belt 9, the front outer auxiliary wheel 11 can be easily attached and detached, and the maintenance performance of the machine body is improved.

また、前記後外側補助輪１２と第４支持転輪６とを所定距離Ｌ３に配置することにより、周回履帯９が横ずれして外れることを防止することができる。すなわち、第４支持転輪６は、テンションスプロケットとして他の支持転輪より周回履帯９の巻き付け角度が１８０°程度あることから、周回履帯９が横ずれする前に周回履帯９を上方に移送するため、周回履帯９が外れることが防止される。この後外側補助輪１２は通常走行には必要ないため、周回履帯９の接地面内側より僅かに上方に取付けることにより、後外側補助輪１２と補助フレーム１３に対する負担を減らすことができるとともに、通常走行時は周回履帯９と非接触であるため、周回履帯９の摩耗を軽減することができ、機体の耐久性が向上する。
また、後外側補助輪１２が周回履帯９と接触していないことにより、前外側補助輪１１の取付け及び取外しが容易となり、機体のメンテナンス性が向上する。 Further, by arranging the rear outer auxiliary wheel 12 and the fourth support roller 6 at a predetermined distance L3, it is possible to prevent the circumferential crawler belt 9 from being laterally displaced and removed. That is, the fourth support roller 6 has a winding angle of about 180 ° as the tension sprocket from the other support rollers, so that the track 9 is moved upward before the track 9 is laterally displaced. , The crawler crawler belt 9 is prevented from coming off. Since the rear outer auxiliary wheel 12 is not necessary for normal traveling, it can be mounted on the inner side of the contact surface of the crawler crawler belt 9 slightly to reduce the burden on the rear outer auxiliary wheel 12 and the auxiliary frame 13. Since it is not in contact with the crawler crawler belt 9 during traveling, the wear of the crawler crawler belt 9 can be reduced, and the durability of the airframe is improved.
Further, since the rear outer auxiliary wheel 12 is not in contact with the crawler crawler belt 9, the front outer auxiliary wheel 11 can be easily attached and detached, and the maintenance of the machine body is improved.

Another configuration example

上記の別構成例としての走行装置は、図３ａ、３ｂに示すように、前記外側補助輪１１に代えて、第１支持転輪３と第２支持転輪４との外側方に延長転輪３ａ，４ａを夫々装着する。これら延長転輪３ａ,４ａを設けたことによって、第１支持転輪３及び第２支持転輪４と転輪周回履帯９の中心との間の空間部が埋められるので、走行装置１が土塊や石等に乗り上げるなどして周回履帯９が撓んでも、延長転輪３ａ，４ａが周回履帯９を押圧するので、周回履帯９が外れることが防止できる。また、走行装置１が周回履帯９が圃場の起伏等を乗り越えるために若干撓むことのできる構成としているため、第３支持転輪５よりも機体前側にガイドを設けられないので、第３支持転輪５に延長転輪を設けることは困難である。そのため、後外側補助輪１２を第４支持転輪６との距離がＬ３となる位置に設けることによって、周回履帯９が土塊や石等によって撓んで横ずれする前に、後外側補助輪１２と第４支持転輪とが周回履帯９を後方に移送するので周回履帯９が脱落することを防止でき、機体の走行姿勢や作業姿勢が安定するので、作業能率や安全性が向上する。 As shown in FIGS. 3 a and 3 b, the traveling device as another configuration example described above is an extended rolling wheel in the outer side of the first supporting wheel 3 and the second supporting wheel 4 instead of the outer auxiliary wheel 11. 3a and 4a are mounted respectively. By providing these extension wheels 3a and 4a, the space between the first support wheel 3 and the second support wheel 4 and the center of the wheel crawler crawler belt 9 is filled. Even if the crawler crawler belt 9 is bent due to climbing on a stone or the like, the extension rollers 3a and 4a press the crawler crawler belt 9, so that the crawler crawler belt 9 can be prevented from coming off. Further, since the traveling device 1 is configured to be able to bend slightly in order for the crawler crawler belt 9 to get over the ups and downs of the field, a guide can not be provided on the front side of the machine body from the third support roller 5, so that the third support It is difficult to provide an extended roller on the roller 5. Therefore, by providing the rear outer auxiliary wheel 12 at a position where the distance from the fourth support roller 6 is L3, the rear outer auxiliary wheel 12 and the rear outer auxiliary wheel 12 can Since the four support rollers transfer the orbital crawler belt 9 to the rear, it is possible to prevent the orbital crawler belt 9 from falling off, and the running posture and working posture of the airframe are stabilized, so that work efficiency and safety are improved.

（フレーム）
次に、走行装置の補助フレーム１３は、その要部平面図（ａ）、側面図（ｂ）を図４に、図４（ｂ）のＣ矢視図を図５に夫々示すように、荷重による圧縮は前後連結アーム２１，２２により受け、荷重による曲げは前後のステー２３、２４によって受けるように構成する。上記のように補助フレーム１３を構成することにより、機体荷重に耐えることができる。
また、前連結アーム２１は機体フレーム２の角パイプ２５に差込式とすること1:よって取付け及び取外しが容易となり、メンテナンス性が向上する。また、前後連結アーム２１，２２は、隣接条の根菜類の茎等に接触しないように下部を機体内側方向に傾斜させて構成し、さらに、全体を左右にスライド可能に構成することで、幅の異なる周回履帯９にも対応することができる。 (flame)
Next, the auxiliary frame 13 of the traveling device has a load as shown in FIG. 4 in plan view (a), side view (b) of the main part, and in FIG. The compression by the front and rear connecting arms 21 and 22 is received, and the bending due to the load is received by the front and rear stays 23 and 24. By configuring the auxiliary frame 13 as described above, it is possible to withstand the load on the aircraft.
Further, the front connecting arm 21 is plugged into the square pipe 25 of the machine body frame 1. Therefore, it is easy to attach and detach, and the maintainability is improved. In addition, the front and rear connecting arms 21 and 22 are configured by inclining the lower part inward of the fuselage so as not to come into contact with the roots of adjacent strips and the like, and further configured to be slidable left and right. It is possible to cope with the different crawler belts 9 of different types.

（転輪延長構成）
次に、走行装置１の別の構成例として、図６ａ、６ｂに示すように、機体の
未掘り側、通常は機体の進行方向左側に配置の引抜搬送装置Ｐの側について、第１〜第３の支持転輪３，４，５の外側方に外側延長部３ａ,４ａ,５ａを延長形成し、これら第１〜第３の支持転輪３，４，５は、受ける荷重を低減するために、キャリアと反対側に取付ける。
また、外側延長部３ａ、４ａ,５ａは、通常の走行時は周回履帯９と接触せず、曲げモーメントの増加に伴うシャフトヘの負担を低減するために、その径が支持転輪３〜５の径より小さく形成する。 (Rolling wheel extension configuration)
Next, as another configuration example of the traveling device 1, as shown in FIGS. 6 a and 6 b, the first to the first ones on the unexcavated side of the airframe, usually on the side of the drawing and conveying device P arranged on the left side in the traveling direction of the airframe. Outer extensions 3a, 4a, 5a are formed on the outer sides of the three supporting rollers 3, 4, 5 so that these first to third supporting rollers 3, 4, 5 reduce the load received. Install on the opposite side of the carrier.
Further, the outer extension portions 3a, 4a, 5a are not in contact with the crawler crawler belt 9 during normal traveling, and the diameter of the outer extension portions 3a, 4a, 5a is less than those of the supporting rollers 3-5 in order to reduce the burden on the shaft accompanying an increase in bending moment. Form smaller than the diameter.

（別構成例）
次に、走行装置の別の構成例の側面図および平面図を図７、図８にそれぞれ示す。走行装置１と隣接条のニンジンとの接触を防止するために、前後外側補助輪１１，１２を支持する補助フレーム１３を周回履帯９の幅内に設ける。また、周回履帯９の撓みによっても接触しないように、前後外側補助輪１１,１２の中間部１３ｂを上に逃がして高く配置する。 (Another configuration example)
Next, a side view and a plan view of another configuration example of the traveling device are shown in FIGS. 7 and 8, respectively. In order to prevent contact between the traveling device 1 and the adjacent carrot, an auxiliary frame 13 that supports the front and rear outer auxiliary wheels 11, 12 is provided within the width of the crawler crawler belt 9. Further, the intermediate portion 13b of the front and rear outer auxiliary wheels 11 and 12 is allowed to escape upward so as not to be contacted by the bending of the circumferential crawler belt 9.

（補助輪支持例）
次に、前後外側補助輪１１,１２は、別例の平面図を図９に示すように、その補助フレーム１３の前後位置に左右の支持プレート１３ｃ,１３ｃによって両持ち支持に構成する。前後支持転輪１１，１２を上記構造とすることにより、片持ち支持による捻り剛性を要しないので、補助フレーム１３の厚さ寸法を小さくすることができ、前後外側補助輪１１,１２の幅を大きくすることができる。
また、前部の前外側補助輪１１の前方に支持プレート１３ｃの延長部１３ｄを設けてシャフトに茎等が巻き付くのを防止し、後外側補助輪１２は、茎等が絡みつこうとした場合の抜けをよくするために、支持プレート１３ｃの長さはシャフト端までとする。 (Auxiliary wheel support example)
Next, the front and rear outer auxiliary wheels 11 and 12 are both supported by left and right support plates 13c and 13c at the front and rear positions of the auxiliary frame 13, as shown in FIG. Since the front and rear support rollers 11 and 12 have the above-described structure, the torsional rigidity by cantilever support is not required, so that the thickness dimension of the auxiliary frame 13 can be reduced and the width of the front and rear outer auxiliary wheels 11 and 12 can be reduced. Can be bigger.
In addition, an extension 13d of the support plate 13c is provided in front of the front outer auxiliary wheel 11 to prevent the stem from wrapping around the shaft, and the rear outer auxiliary wheel 12 tries to entangle the stem. In order to improve the removal of the case, the length of the support plate 13c is set to the end of the shaft.

（延長部構成例）
次に、第４支持転輪６については、図１０ａ、１０ｂに示すように、第１支持転輪３の外側延長部３ａと共に、外側延長部６ａを形成する。
第４支持転輪６はテンションローラとして他の支持転輪より周回履帯９の巻き付け角度が１８０°近くあることから、周回履帯９が外れることが防止される。また、第1支持転輪３はその前方で周回履帯９が上方に向かって引っ張られていることから、その張力の分力により周回履帯９が外れることが防止される。 (Extended part configuration example)
Next, with respect to the fourth support wheel 6, as shown in FIGS. 10a and 10b, the outer extension portion 6a is formed together with the outer extension portion 3a of the first support wheel 3.
Since the winding angle of the crawler crawler belt 9 is 180 degrees closer than that of the other support rollers as the fourth support roller 6 as a tension roller, the crawler crawler belt 9 is prevented from coming off. Further, since the circumferential crawler belt 9 is pulled upward in front of the first support roller 3, the circumferential crawler belt 9 is prevented from coming off due to the component force of the tension.

したがって、前後の外側延長部３ａ,６ａの存在によっても周回履帯９が外れることを防止できるのみならず、圃場状態などによる機体の前後傾斜を抑えることができる。また、外側延長部６ａの基部位置には周回履帯９の芯金９ａを案内するように溝部６ｂを形成することにより、さらに周回履帯９が外れることを防止することができる。 Therefore, the presence of the front and rear outer extensions 3a and 6a can not only prevent the crawler crawler belt 9 from coming off, but also suppress the front and rear inclination of the aircraft due to the state of the field and the like. Further, by forming the groove portion 6b at the base position of the outer extension portion 6a so as to guide the cored bar 9a of the circumferential crawler belt 9, it is possible to further prevent the circumferential crawler belt 9 from coming off.

（排土板）
既刈り側の機体前方には、図１１の機体要部の平面図（ａ）および側面図（ｂ）に示すように、ゲージ輪３１で支持されて圃場の土を内側に向けて寄せる排土板３２を配置する。ゲージ輪３１の支持アーム３１ａと排土板３２の支持アーム３２ａはスライド構造によって長さ調節可能に構成し、その取付部３３ａを機体から延びる支持フレーム３３に対して回動可能に支持することにより、ゲージ輪３１によって畝に追従可能に構成する。 (Scrap plate)
As shown in the plan view (a) and side view (b) of the main part of the machine body in FIG. A plate 32 is arranged. The support arm 31a of the gauge wheel 31 and the support arm 32a of the earth discharging plate 32 are configured to be adjustable in length by a slide structure, and the mounting portion 33a is rotatably supported with respect to the support frame 33 extending from the body. The gage wheel 31 is configured to be able to follow the heel.

上記排土板３２により、その正面視の作用説明図を図１２に示す。畝土Ａ１を内側に向けて寄せ、中割り走行の際にまだ植えてある側に土が寄るのを防ぐとともに、２条目の作業を行う際にも排土板３２を使用することで、畝土Ａ１,Ａ２を内側に向けて寄せて畝の間の溝Ｂを埋め、３条目以降で周回履帯９Ｒが畝間Ｂに入った際に、機体が右傾するのを抑えることができる。 FIG. 12 is a diagram for explaining the operation of the front view of the earth removing plate 32. By bringing the dredged soil A1 toward the inside and preventing the soil from approaching the side where it is still planted during the mid-running run, and using the drainage plate 32 also when performing the second work, It is possible to prevent the aircraft from inclining to the right when the crawler crawler 9R enters the intercostal space B after filling the groove B between the corals by filling the soils A1 and A2 inward.

また、一方の周回履帯９Ｌが軌条Ｕ1の端Ｄに位置する時に、上記排土板３２により隣接畝Ｕ２の上に位置する周回履帯９Ｒの前方を排土板３２によって掘り下げ溝Ｅを作り、その周回履帯９Ｒを溝Ｅに落とすことで機体が畝Ｕ１側に傾くのを防止できる。掘り下げ溝Ｅの幅は、周回履帯９Ｒの接地幅Ｃが反対側の周回履帯９Ｌが接地している畝端幅Ｄと同程度とすることによって、機体の左右方向の水平を保つことができる。 When one of the crawler crawler belts 9L is located at the end D of the rail U1, the excavation plate 32 digs the front of the crawler crawler belt 9R located on the adjacent fence U2 with the excavation plate 32 to form the groove E, By dropping the orbital crawler belt 9R into the groove E, it is possible to prevent the aircraft from tilting toward the heel U1. The width of the dug groove E can be kept horizontal in the left-right direction of the airframe by setting the ground contact width C of the crawler crawler belt 9R to be approximately the same as the heel end width D of the crawler crawler belt 9L on the opposite side.

（伝動系）
次に、伝動系について、図１３〜図１６において説明する。
油圧変速機構（ＨＳＴ）４５のベベルギア４６に駆動軸４７を軸着し、該駆動軸４７の他端を引抜搬送装置Ｐの搬送ベルト４４やカッタ４３に駆動力を伝達するベベルギア４８に軸着する。また、前記駆動軸４７に第１スプロケット４９を装着し、クリーンコンベア４１ａにクリーンコンベア駆動スプロケット５０を装着すると共に、第１スプロケット４９とクリーンコンベア駆動スプロケット５０との間に第１チェーン５１を無端状に巻き掛ける。そして、クリーンコンベア駆動スプロケット５０に軸５２を装着し、該軸５２に第２スプロケット５３を装着し、くみ上げコンベア４１ｂに連結軸５６を介してくみ上げコンベア駆動スプロケット５４を装着すると共に、第２スプロケット５３とくみ上げコンベア駆動スプロケット５４との間に第２チェーン５５を無端状に巻き掛けて、クリーンコンベア４１ａとくみ上げコンベア４１ｂとを引抜搬送フレーム４２に連結させる連結ユニット５７を構成する。 (Transmission system)
Next, the transmission system will be described with reference to FIGS.
A drive shaft 47 is pivotally attached to a bevel gear 46 of a hydraulic transmission mechanism (HST) 45, and the other end of the drive shaft 47 is pivotally attached to a bevel gear 48 that transmits a driving force to the conveying belt 44 and the cutter 43 of the pulling and conveying apparatus P. . The first sprocket 49 is mounted on the drive shaft 47, the clean conveyor drive sprocket 50 is mounted on the clean conveyor 41a, and the first chain 51 is endlessly formed between the first sprocket 49 and the clean conveyor drive sprocket 50. Wrap around. Then, the shaft 52 is mounted on the clean conveyor drive sprocket 50, the second sprocket 53 is mounted on the shaft 52, the lift conveyor drive sprocket 54 is mounted on the lift conveyor 41b via the connecting shaft 56, and the second sprocket 53 is mounted. A second chain 55 is wound endlessly between the lifting conveyor drive sprocket 54 and a connecting unit 57 is configured to connect the clean conveyor 41a and the lifting conveyor 41b to the pulling and conveying frame 42.

上記構成により、クリーンコンベア４１ａとくみ上げコンベア４１ｂとの伝動を油圧変速機構４５の伝動軸４７と兼用することができ、図１６に示す従来の伝動系統よりも簡易に伝動系統を構成することができる。また、油圧変速機構４５の駆動軸４７から連結ユニット５７が駆動力を受けることによって、引抜搬送装置Ｐのベルト４４とクリーンコンベア４１ａとの作業速度を連動させることが出来るので、クリーンコンベア４１ａに根菜類が停滞し、落下してくる根菜類とぶつかって傷付くことを防止できる。 With the above configuration, the transmission between the clean conveyor 41a and the lifting conveyor 41b can be used also as the transmission shaft 47 of the hydraulic transmission mechanism 45, and a transmission system can be configured more easily than the conventional transmission system shown in FIG. . Further, when the connecting unit 57 receives the driving force from the drive shaft 47 of the hydraulic transmission mechanism 45, the working speed of the belt 44 of the drawing and conveying apparatus P and the clean conveyor 41a can be interlocked. It is possible to prevent stagnation and damage from falling root vegetables.

さらに、連結ユニット５７が引抜搬送フレーム４２と連結されていることによって、引抜搬送装置Ｐの作業高さを変更すると、クリーンコンベア４１ａも連動して傾斜するため、カッタ４３とクリーンコンベア４１ａとの距離が変わらず、落下の衝撃で根菜類が傷付くことを防止することができる。 Further, since the connecting unit 57 is connected to the drawing / conveying frame 42 and the working height of the drawing / conveying device P is changed, the clean conveyor 41a is also tilted in conjunction with it, so the distance between the cutter 43 and the clean conveyor 41a. The root vegetables are prevented from being damaged by the impact of falling.

図面に示した根菜類収穫機は、機体を自走させる走行装置１と、搭乗した操縦者によって操作される操作具を配置した操縦部と、圃場に植生する根菜類の茎葉部を挟持して後側斜め上方に搬送して引抜き収穫する収穫部Ｐと、収穫物を収容する容器を設置可能とする収容部と、前記収穫部Ｐから収穫物を受け取って前記収容部に搬送する搬送部と、収穫物を収容した容器を複数体載置可能とする収穫物載置部とを設けた構成としている。また、前記走行装置１は駆動回転する左右一対のクローラ９Ｌ，９Ｒを備え、前記収穫部Ｐは機体の左右一方側に配置し、前記収穫物載置部は機体の左右他方側に配置し且つ該収穫物載置部を配置した側のクローラ９Ｒの左右外端部より収穫物載置部の左右外端部が左右方向外側に位置する状態に配置している。そして、前記収穫物載置部を配置した側のクローラ９Ｒの接地部を左右反対側のクローラ９Ｌの接地部より下方に位置する状態に下動可能に設けている。 The root vegetable harvesting machine shown in the drawing sandwiches a traveling device 1 for self-propelling the aircraft, a control unit in which an operation tool operated by a boarded operator is disposed, and a stem and leaf part of a root vegetable planted in a field. A harvesting section P that is transported obliquely upward on the rear side and pulled out and harvested, a storage section that enables installation of a container that stores the harvested product, and a transport section that receives the harvested product from the harvesting section P and transports it to the storing section In addition, a configuration is provided in which a harvested product placement section is provided that allows a plurality of containers containing harvested products to be placed. The traveling device 1 includes a pair of left and right crawlers 9L and 9R that are driven to rotate, the harvesting portion P is disposed on one of the left and right sides of the machine body, the harvested product placing section is disposed on the other left and right side of the machine body, and The crawler 9R on the side where the crop placement unit is arranged is arranged such that the left and right outer ends of the crop placement unit are positioned on the outer side in the left-right direction from the left and right outer ends of the crawler 9R. Then, the grounding portion of the crawler 9R on the side where the harvested product placement portion is arranged is provided so as to be able to move down to a state positioned below the grounding portion of the crawler 9L on the opposite side.

根菜類収穫機を作業走行させて畝の上面に成育している根菜類を収穫するとき、収穫部Ｐを配置した側のクローラ９Ｌは畝の上面を走行し、収穫物載置部を配置した側のクローラ９Ｒは畝間の溝を走行して、収穫物載置部を配置した側が低くなるように機体が左右に傾斜する状態となる場合がある。このとき、収穫物載置部を配置した側のクローラ９Ｒが走行する溝が深いと、そのクローラ９Ｒの左右外端部より左右方向外側に位置する収穫物載置部の左右外端部が隣接する畝上面に接地してしまうことがある。しかしながら、この根菜類収穫機は、収穫物載置部を配置した側のクローラ９Ｒの接地部を左右反対側のクローラ９Ｌの接地部より下方に位置する状態に下動させることで、収穫物載置部の左右外端部を上昇させて隣接する畝上面への接地を回避することが可能となる。従って、収穫物載置部の左右外端部が地面に接地することによって機体の進行方向が左右にずれて収穫部Ｐが根菜類の茎葉部を確実に挟持し難くなるのを回避できて、適確な収穫作業が行なえるようになる。また、収穫作業開始時において収穫作業する畝に隣接する畝の根菜類が未だ収穫されていない状態で収穫作業を行なう場合があるが、このような場合、上記のように機体が左右に傾いて収穫物載置部の左右外端部が隣接する畝の根菜類の茎葉部を引っかけたり押し倒したりして、その畝の根菜類の収穫作業を適確に行い難くすることがある。しかし、この根菜類収穫機は、収穫物載置部を配置した側のクローラ９Ｒの接地部を左右反対側のクローラ９Ｌの接地部より下方に位置する状態に下動させることで、収穫物載置部の左右外端部を上昇させて隣接する畝の根菜類の茎葉部を引っかけたり押し倒したりしないようにできる。 When root vegetables harvested on the upper surface of the grapes are harvested by operating the root vegetable harvesting machine, the crawler 9L on the side where the harvesting part P is arranged runs on the upper surface of the grapes and arranges the harvested product placement part. The crawler 9 </ b> R on the side may travel in the groove between the furrows, and the machine body may be tilted to the left and right so that the side on which the crop placement unit is disposed is lowered. At this time, if the groove on which the crawler 9R on the side on which the crop placement unit is arranged travels is deep, the left and right outer ends of the crop placement unit located on the outer side in the left-right direction are adjacent to the left and right outer ends of the crawler 9R. Doing so may make contact with the top surface. However, the root vegetable harvesting machine moves the grounding part of the crawler 9R on the side where the crop placement unit is arranged to a position located below the grounding part of the crawler 9L on the left and right opposite side, thereby placing the crop on it. It is possible to avoid the grounding to the upper surface of the adjacent saddle by raising the left and right outer ends of the mounting portion. Therefore, it can be avoided that the left and right outer ends of the crop placement unit are in contact with the ground, so that the traveling direction of the machine body is shifted to the left and right and the harvesting part P is difficult to reliably hold the roots and leaves of the root vegetables. Accurate harvesting work can be done. In addition, when the harvesting work is started, the harvesting work may be performed in a state where the root vegetables adjacent to the harvesting work are not yet harvested. In such a case, the aircraft tilts to the left and right as described above. Sometimes the left and right outer ends of the crop placement part hook or push down the stems and leaves of the adjacent root vegetables, making it difficult to harvest the root vegetables properly. However, the root vegetable harvesting machine moves the grounding part of the crawler 9R on the side where the crop placement unit is arranged to a position below the grounding part of the crawler 9L on the left and right side, thereby placing the crop on it. The left and right outer end portions of the mounting portion can be raised so that the stems and leaves of the adjacent root vegetables are not caught or pushed down.

走行装置１は、駆動回転する左右一対のクローラ９Ｌ，９Ｒにより構成している。このクローラ９Ｌ，９Ｒの駆動機構は、まず、操縦部の操縦座席の下側に配置したエンジンの動力が、機体前部の低位置に設けたミッションに伝動し、該ミッションから左右両側に延出させた走行駆動軸が駆動回転し、この走行駆動軸の左右両外端部に取り付けた駆動スプロケット７，７が駆動回転して左右のクローラ９Ｌ，９Ｒが駆動される構成となっている。クローラ９Ｌ，９Ｒは、駆動スプロケット７，７と機体後部側の転動輪６，６、そして、その転動輪６，６と駆動スプロケット７，７との間に取り付けた転輪４，５；４，５の周りに巻き掛けて取り付けている。 The traveling device 1 includes a pair of left and right crawlers 9L and 9R that are driven to rotate. In this crawler 9L, 9R drive mechanism, first, the power of the engine arranged under the control seat of the control unit is transmitted to a mission provided at a low position in the front part of the fuselage, and extends from the mission to the left and right sides. The travel drive shaft thus driven is driven and rotated, and the drive sprockets 7 and 7 attached to the left and right outer ends of the travel drive shaft are driven and rotated to drive the left and right crawlers 9L and 9R. The crawlers 9L and 9R include the driving sprockets 7 and 7 and the rolling wheels 6 and 6 on the rear side of the machine body, and the rolling wheels 4 and 5 attached between the rolling wheels 6 and 6 and the driving sprockets 7 and 7; It is wrapped around 5 and attached.

収穫部Ｐを配置している側（左側）のクローラ９Ｌについては、その転動輪６と転輪４，５を、機体（機体フレーム２）に設けた前側支持フレームと後側支持フレームとに固着された左側転輪支持フレームに回転自在に取付けている。従って、収穫部Ｐを配置している側（左側）のクローラ９Ｌの下面である接地部は機体に対して上下動操作不能となっている。 For the crawler 9L on the side (left side) where the harvesting part P is arranged, the rolling wheels 6 and the rollers 4 and 5 are fixed to the front support frame and the rear support frame provided on the machine body (machine frame 2). The left side wheel support frame is rotatably mounted. Accordingly, the grounding portion, which is the lower surface of the crawler 9L on the side (left side) where the harvesting portion P is disposed, cannot be moved up and down with respect to the machine body.

収穫物載置部を配置した側（右側）のクローラ９Ｒについては以下のように構成している。まず、機体（機体フレーム２）に設けた前側支持フレームと後側支持フレームとにそれぞれ軸心が横方向のスイング軸を設け、該前後のスイング軸に上方と後方にアーム部がのびるスイングアームを回動自在に取付け、該スイングアームの上方にのびるアーム部の先端部を連結ロッドの前後端部に横軸回り回転自在に連結し、スイングアームの後方にのびるアーム部の先端部を右側転輪支持フレームに横軸回り回転自在に取付けている。そして、右側転輪支持フレームに転動輪６と転輪４，５を回転自在に取付けている。また、後側のスイングアームの上方にのびるアーム部の先端部には、更に、シリンダ基部を機体（機体フレーム２）の後部側に横軸回り回動自在に取付けた油圧シリンダのピストンロッド先端部を連結している。従って、油圧シリンダが作動してそのピストンロッドが機体前後方向に移動すると、前後のスイングアームがスイング軸回りに回動して右側転輪支持フレームが上下動するとともに転動輪６と転輪４，５が上下動して、収穫物載置部を配置した側（右側）のクローラ９Ｒの下面である接地部は機体に対して上下動操作可能となっている。なお、後側支持フレームのスイング軸には、クローラ９Ｒの上側の内側面に転動可能に接する転輪を回転自在に設けている。 The crawler 9R on the side (right side) on which the crop placement unit is arranged is configured as follows. First, each of the front support frame and the rear support frame provided on the airframe (airframe frame 2) is provided with a swing axis having a lateral axis, and a swing arm having arm portions extending upward and backward on the front and rear swing shafts. The tip of the arm that extends pivotally above the swing arm is connected to the front and rear ends of the connecting rod so as to be rotatable about the horizontal axis, and the tip of the arm that extends rearward of the swing arm is connected to the right wheel. It is attached to the support frame so that it can rotate about the horizontal axis. And the rolling wheel 6 and the rolling wheels 4 and 5 are rotatably attached to the right side wheel support frame. In addition, at the tip of the arm that extends above the swing arm on the rear side, a piston rod tip of a hydraulic cylinder in which a cylinder base is mounted on the rear side of the machine body (machine frame 2) so as to be rotatable about the horizontal axis. Are connected. Accordingly, when the hydraulic cylinder is operated and its piston rod moves in the longitudinal direction of the machine body, the front and rear swing arms rotate around the swing axis, and the right-side wheel support frame moves up and down and the rolling wheels 6 and 4 and 4 are rotated. 5 is moved up and down, and the grounding portion, which is the lower surface of the crawler 9R on the side (right side) on which the crop placement unit is arranged, can be moved up and down with respect to the machine body. In addition, on the swing shaft of the rear support frame, a rolling wheel is rotatably provided in contact with the inner surface on the upper side of the crawler 9R.

クローラ９Ｌ，９Ｒの内側面の左右中央側に転動輪６の外周部が左右にずれないよう転動輪６の外周部の左右両側部を挟むように突出する左右の突起が形成されている。また、この左右の突起の間に入り込んでクローラを案内する棒状のガイド部材がクローラ下側の内面側に接するように転輪支持フレームに取付けている。このガイド部材の転動輪６，６に近接する後端部の上側は、後下がり傾斜面を形成して転動輪６，６とクローラの間にできるだけ入り込むように設けていて、ガイド部材の下面側ガイド作用部ができるだけ長く形成されるようにし、クローラの外れ防止効果を向上させている。なお、クローラの外周面には、横方向にのびるラグをクローラ回転方向一定間隔ごとに形成している。 Left and right protrusions are formed on the inner left and right sides of the inner surfaces of the crawlers 9L and 9R so as to protrude between the left and right sides of the outer peripheral portion of the rolling wheel 6 so that the outer peripheral portion of the rolling wheel 6 does not shift to the left and right. Further, the rod-shaped guide member that enters between the left and right protrusions and guides the crawler is attached to the wheel support frame so as to be in contact with the inner surface of the lower side of the crawler. The upper side of the rear end portion adjacent to the rolling wheels 6 and 6 of the guide member is provided so as to enter as much as possible between the rolling wheels 6 and 6 and the crawler by forming a rearwardly inclined surface. The guide action portion is formed as long as possible to improve the effect of preventing the crawler from coming off. Note that laterally extending lugs are formed at regular intervals in the crawler rotation direction on the outer peripheral surface of the crawler.

走行装置の左側面図である。It is a left view of a traveling apparatus. 図１の走行装置の平面断面図である。It is a plane sectional view of the traveling device of FIG. 別構成例の走行装置の正面図（ａ）を伴う平面図（ｂ）である、It is a top view (b) with a front view (a) of a traveling device of another configuration example, 走行装置の要部平面図（ａ）および側面図（ｂ）である。It is the principal part top view (a) and side view (b) of a traveling apparatus. 図４（ｂ）におけるＣ矢視図である。It is C arrow line view in FIG.4 (b). 走行装置の別の構成例の正面図（ａ）を伴う平面図（ｂ）である。It is a top view (b) with the front view (a) of another structural example of a traveling apparatus. 走行装置の別の構成例の側面図である。It is a side view of another structural example of a traveling apparatus. 図７の走行装置の平面図である。It is a top view of the traveling apparatus of FIG. 外側補助輪の別構成例の平面図である。It is a top view of another example of composition of an outside auxiliary wheel. 別例についての正面図（ａ）を伴う平面図（ｂ）である。It is a top view (b) with the front view (a) about another example. 機体要部の平面図（ａ）および側面図（ｂ）である。It is the top view (a) and side view (b) of an airframe principal part. 正面視の作用説明図である。It is operation | movement explanatory drawing of a front view. 野菜収穫機の側面図である。It is a side view of a vegetable harvesting machine. 野菜収穫機の背面図である。It is a rear view of a vegetable harvesting machine. 本件の伝動系統図である。It is a transmission system diagram of this case. 従来の伝動系統図である。It is a conventional transmission system diagram.

Explanation of symbols

１走行装置
３第１支持転輪
３ａ外側延長部
４，５中間支持転輪
６第４支持転輪
６ａ外側延長部
７駆動ホイール
８クローラフレーム
９周回履帯
１１前外側補助輪
１２後外側補助輪
１３補助フレーム
１３ｂ中間部
Ｂ畝問
Ｌ１〜Ｌ４距離
Ｐ引抜搬送装置
Ｗ幅寸法 DESCRIPTION OF SYMBOLS 1 Traveling apparatus 3 1st support roller 3a Outer extension part 4,5 Intermediate support wheel 6 Fourth support wheel 6a Outer extension part 7 Drive wheel 8 Crawler frame 9 Circumferential track 11 Front outer side auxiliary wheel 12 Rear outer side auxiliary wheel 13 Auxiliary frame 13b Intermediate part B Interrogation L1-L4 Distance P Pull-out conveying device W Width

Claims

A circumferential crawler belt (9) having a width dimension (W) extending from the side edge of the support rollers (3 to 6) to the outside of the aircraft is wound around the plurality of support rollers (3 to 6) arranged in the longitudinal direction of the aircraft. An endless track type traveling device (1) configured to rotate, and a pulling and conveying device (P) for pulling root vegetables planted on the field to the left and right sides of the machine traveling on the field by the traveling device (1) to the rear of the machine. )
The traveling device (1) is provided with a front outer auxiliary wheel (11) on the outer side of the machine body from the side ends of the supporting wheels (3-6), and the front outer auxiliary wheel (11) is connected to the front outer auxiliary wheel (11). The distance (L1) between the front side of the traveling device (1) and the supporting wheel (3) that grounds the orbital crawler belt (9) to the field is adjacent to the rear side of the front outer auxiliary wheel (11) and the supporting wheel (3). A root crop harvesting machine, which is disposed at a position that is shorter than the distance (L2) from the supporting roller (4).

The traveling device (1) is provided with a rear outer auxiliary wheel (12) on the outer side of the body with respect to the side ends of the supporting wheels (3-6), and the rear outer auxiliary wheel (12) is a rear outer auxiliary wheel (12). And a distance (L3) between the support crawler wheel (6) that grounds the crawler crawler belt (9) to the field on the rear side of the traveling device (1) is in front of the rear outer auxiliary wheel (12) and the support wheel (6). The root crop harvesting machine according to claim 1, wherein the root vegetable harvesting machine is arranged at a position shorter than a distance (L4) between the adjacent support rollers (5).