JP2008212073A - Walking-type working machine - Google Patents

Walking-type working machine Download PDF

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JP2008212073A
JP2008212073A JP2007055054A JP2007055054A JP2008212073A JP 2008212073 A JP2008212073 A JP 2008212073A JP 2007055054 A JP2007055054 A JP 2007055054A JP 2007055054 A JP2007055054 A JP 2007055054A JP 2008212073 A JP2008212073 A JP 2008212073A
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wheel body
tail wheel
posture
tail
rotation
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Katsuyuki Yada
克之 矢田
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Mitsubishi Agricultural Machinery Co Ltd
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Mitsubishi Agricultural Machinery Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that an attachment and a tail wheel body for movement interfere with each other in work performed by mounting the attachment in the rear of a tilling section. <P>SOLUTION: In the walking-type working machine 1, the tilling section 6 for tilling soil along with the traveling of a machine body is equipped with a ground contact member such as a tail sleigh 16 for regulating the plowing depth of the tilling section 6 by contact with the ground. The tail sleigh 16 is fitted with the tail wheel body 17 for movement, which lifts the tilling section 6 from a soil surface or a road surface during non-operations. When the tail wheel 17 can switch between such an action attitude as to protrude downward with respect to the lower end of the tail sleigh 16, and such a nonaction attitude as to recede upward with respect to the lower end thereof, it switches between the action attitude and the nonaction one by being rotated on the longitudinally-directed rotational axis (rotating shaft 18). <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、歩行型管理機などの歩行型作業機に関し、特に、非作業移動時に耕耘部を土壌面又は路面から浮かせる移動用の尾輪体が備えられた歩行型作業機に関する。   The present invention relates to a walk-type work machine such as a walk-type management machine, and more particularly, to a walk-type work machine provided with a moving tail wheel that floats a tillage unit from a soil surface or a road surface during non-working movement.

非作業移動時に耕耘部を土壌面又は路面から浮かせる移動用の尾輪体を備えた歩行型作業機が知られている(例えば、特許文献1、2参照)。この種の尾輪体は、通常、耕耘部の後方近傍に設けられる接地部材(接地により耕耘部の耕深を調節する耕深調節部材、又は、接地により走行抵抗を付与するダッシング防止用の抵抗部材)に取り付けられると共に、接地部材の下端よりも下方に突出する作用姿勢と、接地部材の下端よりも上方に退避する非作用姿勢とに変姿可能となっている。例えば、特許文献1の歩行型作業機では、尾輪体を着脱自在とし、不要なときは耕耘部の上方に装着できるようにしてある。また、特許文献2の歩行型作業機では、尾輪体を上下回動自在に支持すると共に、ロックピンによる選択的な回動ロックにより、尾輪体を作用姿勢と非作用姿勢に保持できるようにしてある。
特開2004−313006号公報 特開2006−246775号公報
2. Description of the Related Art A walking work machine is known that includes a moving tail wheel that floats a tillage unit from a soil surface or a road surface during non-working movement (see, for example, Patent Documents 1 and 2). This type of tail wheel is usually a grounding member provided near the rear of the tillage part (plowing depth adjusting member that adjusts the tilling depth of the tilling part by grounding, or resistance for preventing dashing that provides running resistance by grounding). And can be transformed into a working posture projecting downward from the lower end of the grounding member and a non-working posture retracting upward from the lower end of the grounding member. For example, in the walking type working machine of Patent Document 1, the tail wheel body is made detachable, and can be mounted above the tillage portion when unnecessary. Further, in the walking type working machine of Patent Document 2, the tail wheel body is supported so as to be rotatable up and down, and the tail wheel body can be held in the working posture and the non-working posture by selective rotation locking by a lock pin. It is.
Japanese Patent Laid-Open No. 2004-313006 JP 2006-246775 A

特許文献2に示されるような回動式の尾輪体は、特許文献1に示されるような着脱式の尾輪体に比べ、姿勢の切換えが容易である点や、尾輪体を紛失する心配がない点で優れているが、特許文献2の尾輪体は、非作用姿勢とする場合に、地面に対して垂直な姿勢を維持したまま上方に大きく退避するため、耕耘部の後方にアタッチメントを装着して行う作業においては、尾輪体とアタッチメントが干渉してしまうという問題があった。   Compared with the detachable tail wheel body shown in Patent Document 1, the rotating tail wheel body shown in Patent Document 2 is easier to switch the posture and loses the tail wheel body. Although it is excellent in that there is no worry, the tail wheel body of Patent Document 2 is largely retracted upward while maintaining a posture perpendicular to the ground when in a non-acting posture. In the work performed by attaching the attachment, there was a problem that the tail wheel body and the attachment interfered with each other.

本発明は、上記の如き実情に鑑みこれらの課題を解決することを目的として創作されたものであって、機体走行に伴って土壌を耕耘する耕耘部に、接地により耕耘部の耕深を調節する耕深調節部材、又は、接地により走行抵抗を付与するダッシング防止用の抵抗部材として機能する接地部材を備える歩行型作業機において、前記接地部材に、非作業移動時に耕耘部を土壌面又は路面から浮かせる移動用の尾輪体を取り付けると共に、該尾輪体の姿勢を、接地部材の下端よりも下方に突出する作用姿勢と、接地部材の下端よりも上方に退避する非作用姿勢とに切換可能にするにあたり、尾輪体を、前後を向く回動軸心を中心とする回動によって、作用姿勢と非作用姿勢とに切換えることを特徴とする。このようにすると、尾輪体を非作用姿勢とする場合に、尾輪体を垂直な姿勢を維持したまま上方に退避させるのではなく、尾輪体を水平姿勢に近づけながら上方に退避させることができるので、非作用姿勢における尾輪体の上端高さを低く抑えることができる。これにより、耕耘部の後方にアタッチメントを装着して行う作業において、尾輪体とアタッチメントが干渉してしまうという問題を解消できる。
また、前記尾輪体の回動をロックする回動ロック手段を設けるにあたり、該回動ロック手段は、非作用姿勢における尾輪体の回動を、尾輪体が地面と略平行になる位置でロックすることを特徴とする。このようにすると、非作用姿勢における尾輪体の上端高さを、尾輪体の回動軸心と略同じ高さに抑えることができるので、尾輪体とアタッチメントの干渉をより確実に回避することができる。
The present invention was created to solve these problems in view of the above circumstances, and adjusts the tilling depth of the tilling portion by grounding to the tilling portion that tills the soil as the aircraft runs. In the walking type working machine including a grounding member that functions as a plowing depth adjusting member or a dashing-preventing resistance member that imparts running resistance by grounding, the plowing portion is placed on the soil surface or road surface when the non-working movement is performed on the grounding member Attach a moving tail wheel body that floats from the top and switch the posture of the tail wheel body between a working posture that projects below the lower end of the grounding member and a non-working posture that retreats above the lower end of the grounding member In making it possible, the tail wheel body is switched between an action posture and a non-action posture by turning around a turning axis that faces forward and backward. In this way, when the tail wheel is in a non-acting posture, the tail wheel is not retracted upward while maintaining a vertical posture, but the tail wheel is retracted upward while approaching a horizontal posture. Therefore, the height of the upper end of the tail wheel body in the non-acting posture can be kept low. Thereby, the problem that a tail wheel body and an attachment interfere in the operation | work which attaches an attachment to the back of a tilling part and can be solved can be eliminated.
In addition, when providing the rotation lock means for locking the rotation of the tail wheel body, the rotation lock means is configured to rotate the tail wheel body in a non-acting posture at a position where the tail wheel body is substantially parallel to the ground. It is characterized by locking with. In this way, the upper end height of the tail wheel body in the non-acting posture can be suppressed to substantially the same height as the rotational axis of the tail wheel body, so interference between the tail wheel body and the attachment can be avoided more reliably. can do.

次に、本発明の実施形態について、図面に基づいて説明する。図1において、1は歩行型作業機であって、該歩行型作業機1は、機体フレームに兼用される側面視略への字状のミッションケース2を備えている。ミッションケース2の前端部左右両側には、車軸3を介して車輪4が軸支され、また、ミッションケース2の後端部には、左右外側方に延出するロータリ耕耘軸5を備えたロータリ式の耕耘部6が構成されている。尚、本実施形態の歩行型作業機1は、車輪4の駆動により走行する車輪タイプであるが、クローラの駆動により走行するクローラタイプの歩行型作業機においても、本発明が実施できることは言うまでもない。   Next, embodiments of the present invention will be described with reference to the drawings. In FIG. 1, reference numeral 1 denotes a walking type working machine, and the walking type working machine 1 includes a mission case 2 having a letter shape substantially in side view, which is also used as a body frame. A wheel 4 is pivotally supported on both the left and right sides of the front end portion of the mission case 2 via an axle 3, and a rotary plow shaft 5 is provided at the rear end portion of the mission case 2 and extends to the left and right outer sides. A formula tiller 6 is constructed. The walking type working machine 1 of this embodiment is a wheel type that travels by driving the wheels 4, but it goes without saying that the present invention can also be implemented in a crawler type walking type working machine that travels by driving the crawler. .

ミッションケース2の上部には、エンジン7が搭載されており、該エンジン7の発生動力は、テンションクラッチからなるメインクラッチ(図示せず)を介して、ミッションケース2に入力される。ミッションケース2には、走行動力を変速する走行変速機構(図示せず)と、作業動力を変速する作業変速機構(図示せず)とを含むトランスミッションが内装されている。これにより、本実施形態のミッションケース2は、エンジン7から車輪4に駆動力を伝動する走行伝動ケースと、エンジン7から耕耘部6に駆動力を伝動する作業伝動ケースとに兼用される。   An engine 7 is mounted on the upper part of the mission case 2, and the power generated by the engine 7 is input to the mission case 2 via a main clutch (not shown) formed of a tension clutch. The transmission case 2 includes a transmission including a travel speed change mechanism (not shown) for shifting the travel power and a work speed change mechanism (not shown) for shifting the work power. Thereby, the mission case 2 of the present embodiment is used both as a traveling transmission case that transmits driving force from the engine 7 to the wheels 4 and a work transmission case that transmits driving force from the engine 7 to the tilling unit 6.

ミッションケース2の後部には、ハンドルブラケット8を介してハンドル9が取り付けられている。ハンドル9は、走行機体から後上方に延出しており、その後端部分が作業者によって把持される。また、ハンドル9の後端部には、メインクラッチの入り切りを操作するクラッチレバー10が設けられており、このクラッチレバー10の操作によって、車輪4及び耕耘部6の駆動を入り/切りすることが可能になる。   A handle 9 is attached to the rear part of the mission case 2 via a handle bracket 8. The handle 9 extends rearward and upward from the traveling machine body, and the rear end portion thereof is gripped by the operator. In addition, a clutch lever 10 is provided at the rear end portion of the handle 9 for operating on / off of the main clutch. By operating the clutch lever 10, the driving of the wheel 4 and the tillage unit 6 can be turned on / off. It becomes possible.

また、ミッションケース2の上部には、前後方向及び左右方向の操作が許容される変速レバー11の基端部が連結支持されており、その先端側は、後上方(作業者側)に向けて延出されている。変速レバー11の基端部は、図示しない連結機構を介して、ミッションケース2内の走行変速機構及び作業変速機構に連結されており、変速レバー11の操作に応じて、走行変速機構及び作業変速機構が変速作動される。   In addition, a base end portion of the transmission lever 11 that is allowed to operate in the front-rear direction and the left-right direction is connected and supported at the upper portion of the transmission case 2, and the distal end side thereof is directed rearward and upward (operator side). It has been extended. The base end portion of the speed change lever 11 is connected to a travel speed change mechanism and a work speed change mechanism in the mission case 2 via a connection mechanism (not shown). The mechanism is shifted.

耕耘部6には、前述したロータリ耕耘軸5の他に、ロータリ耕耘軸5に設けられる耕耘爪13、耕耘爪13の上方を覆うロータリカバー14、ロータリカバー14の後端部に上下揺動自在に設けられるリヤカバー(ゴム板)15、ロータリカバー14に上下位置変更自在に設けられる尾ソリ(接地部材、耕深調節部材)16などが設けられている。尾ソリ16は、圃場面を滑走することにより耕耘部6の耕耘深さを規制しており、その上下位置変更により耕耘深さの調節が可能になる。また、耕耘部6の後方には、行う作業の種類に応じて、任意のアタッチメント(図示せず)を装着することができるようになっている。   In addition to the rotary tilling shaft 5 described above, the tilling portion 6 includes a tilling claw 13 provided on the rotary tilling shaft 5, a rotary cover 14 that covers the top of the tilling claw 13, and a rear end portion of the rotary cover 14 that can swing up and down. Are provided with a rear cover (rubber plate) 15 and a tail sled (grounding member, tillage adjusting member) 16 provided on the rotary cover 14 so that the vertical position can be changed. The tail sled 16 regulates the tilling depth of the tilling unit 6 by sliding in the farm scene, and the tilling depth can be adjusted by changing the vertical position thereof. In addition, an arbitrary attachment (not shown) can be attached to the rear of the tilling unit 6 according to the type of work to be performed.

尾ソリ16には、非作業移動時に耕耘部6を土壌面又は路面から浮かせる移動用の尾輪体17が取り付けられている。尾輪体17は、尾ソリ16の下端よりも下方に突出する作用姿勢と、尾ソリ16の下端よりも上方に退避する非作用姿勢とに変姿可能となっており、状況に応じて上記の2姿勢に切換操作される。   The tail sled 16 is attached with a tail ring body 17 for moving the tiller 6 from the soil surface or road surface during non-working movement. The tail wheel body 17 can be transformed into an action posture that projects downward from the lower end of the tail sled 16 and a non-action posture that retreats above the lower end of the tail sled 16. The two positions are switched.

図2及び図3に示すように、本発明に係る歩行型作業機1の尾輪体17は、前後を向く回動軸心(回動軸18)を中心とする回動によって、作用姿勢と非作用姿勢とに切換えられるようになっている。このようにすると、尾輪体17を非作用姿勢とする場合に、尾輪体17を垂直な姿勢を維持したまま上方に退避させるのではなく、尾輪体17を水平姿勢に近づけながら上方に退避させることができるので、非作用姿勢における尾輪体17の上端高さを低く抑えることができる。これにより、耕耘部6の後方にアタッチメントを装着して行う作業において、尾輪体17とアタッチメントが干渉してしまうという問題を解消できる。   As shown in FIGS. 2 and 3, the tail wheel body 17 of the walking work machine 1 according to the present invention has an action posture by turning around a turning axis (turning shaft 18) facing forward and backward. It can be switched to a non-acting posture. In this way, when the tail wheel body 17 is in a non-acting posture, the tail wheel body 17 is not retracted upward while maintaining a vertical posture, but the tail wheel body 17 is moved upward while approaching a horizontal posture. Since it can be made to retract, the upper end height of the tail wheel body 17 in the non-acting posture can be kept low. Thereby, the problem that the tail wheel body 17 and the attachment interfere with each other in the work performed by attaching the attachment to the rear of the tillage unit 6 can be solved.

また、尾輪体17の上下回動をロックする回動ロック手段を設けるにあたり、該回動ロック手段は、非作用姿勢における尾輪体17の回動を、尾輪体17が地面と略平行になる位置でロックすることが好ましい。このようにすると、非作用姿勢における尾輪体17の上端高さを、尾輪体17の回動軸心と略同じ高さに抑えることができるので、尾輪体17とアタッチメントの干渉をより確実に回避することができる。   Further, when providing the rotation lock means for locking the vertical rotation of the tail wheel body 17, the rotation lock means allows the tail wheel body 17 to rotate in the non-acting posture, and the tail wheel body 17 is substantially parallel to the ground. It is preferable to lock at the position. In this way, the height of the upper end of the tail wheel body 17 in the non-acting posture can be suppressed to substantially the same height as the rotational axis of the tail wheel body 17, so that interference between the tail wheel body 17 and the attachment can be further reduced. It can be avoided reliably.

次に、尾輪体17及び回動ロック手段の具体的な構成について、図2〜図5を参照して説明する。これらの図に示すように、尾輪体17は、前後を向く回動軸18の後端部に設けられている。回動軸18は、尾ソリ16に設けられるボス19によって、回動及び前後スライド自在に支持されており、前後を向く回動軸心を中心とする回動により、尾輪体17の姿勢を作用姿勢と非作用姿勢とに切換える。   Next, specific configurations of the tail wheel body 17 and the rotation lock means will be described with reference to FIGS. As shown in these drawings, the tail wheel body 17 is provided at the rear end portion of the rotating shaft 18 facing front and rear. The rotation shaft 18 is supported by a boss 19 provided on the tail sled 16 so as to be rotatable and slidable back and forth. The rotation of the tail wheel body 17 is achieved by rotation about a rotation axis that faces front and rear. Switch between working posture and non-working posture.

回動軸18の前端部には、非円形断面を有する回動ロック部18aが一体的に設けられる。回動ロック部18aは、非円形断面を有していれば、図5の(A)に示すような角柱形状でもよいし、図5の(B)に示すような歯車形状でもよい。一方、ボス19の前部には、回動軸18の回動ロック部18aが前方から嵌合可能で、かつ、嵌合した回動ロック部18aの回動を規制する回動ロック穴19aが形成されている。つまり、回動軸18の回動ロック部18aは、通常、ボス19の回動ロック穴19aに嵌合しており、該回動ロック穴19aによる回動規制によって、尾輪体17が作用姿勢又は非作用姿勢に保持される。また、尾輪体17の姿勢を切換える場合は、回動軸18を前方にスライドさせて、回動ロック部18aを回動ロック穴19aから抜く。これにより、回動軸18の回動が許容され、尾輪体17の姿勢切換が可能になる。そして、尾輪体17の姿勢切換を切換えた後は、回動軸18を後方にスライドさせ、回動ロック部18aを再び回動ロック穴19aに嵌合させる。尚、本実施形態の尾輪体17は、作用姿勢に対して90°回動させた非作用姿勢だけでなく、180°回動させた非作用姿勢にも保持可能であるが、さらに多くの非作用姿勢(例えば、45°、90°、135°、180°)を設定し、任意の非作用姿勢を選択できるようにしてもよい。   A rotation lock portion 18 a having a non-circular cross section is integrally provided at the front end portion of the rotation shaft 18. As long as the rotation lock part 18a has a non-circular cross section, it may have a prismatic shape as shown in FIG. 5A or a gear shape as shown in FIG. On the other hand, the front portion of the boss 19 has a rotation lock hole 19a in which the rotation lock portion 18a of the rotation shaft 18 can be fitted from the front and restricts the rotation of the fitted rotation lock portion 18a. Is formed. In other words, the rotation lock portion 18a of the rotation shaft 18 is normally fitted in the rotation lock hole 19a of the boss 19, and the tail wheel body 17 is in the working posture by the rotation restriction by the rotation lock hole 19a. Alternatively, it is held in a non-acting posture. Further, when the posture of the tail wheel body 17 is switched, the rotation shaft 18 is slid forward, and the rotation lock portion 18a is removed from the rotation lock hole 19a. Thereby, the rotation of the rotation shaft 18 is allowed, and the posture of the tail wheel body 17 can be switched. Then, after switching the posture switching of the tail wheel body 17, the rotation shaft 18 is slid rearward, and the rotation lock portion 18a is again fitted into the rotation lock hole 19a. Note that the tail wheel body 17 of the present embodiment can be held not only in a non-action posture rotated by 90 ° with respect to the action posture, but also in a non-action posture rotated by 180 °. A non-operation posture (for example, 45 °, 90 °, 135 °, 180 °) may be set so that an arbitrary non-operation posture can be selected.

尾輪体17の回動ロック手段を上記のように構成する場合は、バネ20などを用いて、回動軸18を後方に付勢することが好ましい。例えば、回動軸18に中間部に装着したワッシャ21とボス19の後端面との間に、圧縮コイルスプリングからなるバネ20を介設する。このようにすると、意に反して回動ロック部18aが回動ロック穴19aから抜け、尾輪体17が回動してしまうという不都合が解消される。尚、バネ20の付勢力は、尾輪体17の姿勢を切換える際、作業者による回動軸18のスライド操作を許容する範囲で設定される。   When the rotation lock means of the tail wheel body 17 is configured as described above, it is preferable to bias the rotation shaft 18 backward using a spring 20 or the like. For example, a spring 20 formed of a compression coil spring is interposed between a washer 21 attached to the rotation shaft 18 at an intermediate portion and a rear end surface of the boss 19. In this case, the inconvenience that the rotation lock portion 18a unintentionally comes out of the rotation lock hole 19a and the tail wheel body 17 rotates is solved. The urging force of the spring 20 is set in a range that allows the operator to slide the rotating shaft 18 when the posture of the tail wheel body 17 is switched.

また、回動軸18の前端側、すなわち回動ロック部18a、回動ロック穴19a、バネ20、ワッシャ21などで構成される回動ロック手段は、全体をカバー体22で覆うことが好ましい。例えば、ボス19の前後に蛇腹状のゴムブーツを設けて、回動軸18の前端側を覆う。このようにすると、回動軸18の前端側に構成される回動ロック手段に泥などが付着することを防止し、泥などの付着に起因するトラブルを回避できる。   Further, it is preferable that the rotation lock means constituted by the front end side of the rotation shaft 18, that is, the rotation lock portion 18 a, the rotation lock hole 19 a, the spring 20, the washer 21, etc. is entirely covered with the cover body 22. For example, bellows-like rubber boots are provided before and after the boss 19 to cover the front end side of the rotating shaft 18. If it does in this way, it will prevent that mud etc. adhere to the rotation lock means comprised in the front end side of rotation axis 18, and the trouble resulting from adhesion of mud etc. can be avoided.

本実施形態では、尾ソリ16の高さ変更に基づく耕耘部6の耕深調節を、ハンドル9に設けられる操作レバー23の操作で容易に行うことができるようになっている。つまり、尾ソリ16のスライド支持部24に、操作レバー23の操作に応じて出没するストッパピン25を設けると共に、該ストッパピン25を尾ソリ16に向けてバネ26で付勢し、尾ソリ16に複数形成される係合孔16aにストッパピン25を選択的に係合させることにより、尾ソリ16を任意の高さでスライドロックする。このようにすると、操作レバー23を握りながら(ストッパピン25を係合孔16aから抜いた状態)、尾ソリ16を任意の高さまでスライドさせた後、操作レバー23を放せば、ストッパピン25が近くの係合孔16aに係合するので、尾ソリ16の高さ調節を容易に完了させることができる。尚、図中、27はストッパピン25と操作レバー23を連繋するワイヤーケーブルでる。   In the present embodiment, the plowing depth adjustment of the tilling unit 6 based on the height change of the tail sled 16 can be easily performed by operating the operation lever 23 provided on the handle 9. That is, the slide support portion 24 of the tail sled 16 is provided with a stopper pin 25 that appears and disappears in response to the operation of the operation lever 23, and the stopper pin 25 is urged by the spring 26 toward the tail sled 16 so that the tail sled 16 By selectively engaging the stopper pin 25 with the plurality of engaging holes 16a formed in the rear, the tail sled 16 is slide-locked at an arbitrary height. In this way, while holding the operation lever 23 (with the stopper pin 25 pulled out from the engagement hole 16a), the tail pin 16 is slid to an arbitrary height, and then the operation lever 23 is released, the stopper pin 25 is released. Since it engages with the nearby engagement hole 16a, the height adjustment of the tail sled 16 can be easily completed. In the figure, reference numeral 27 denotes a wire cable for connecting the stopper pin 25 and the operation lever 23 together.

叙述の如く構成された本実施形態によれば、機体走行に伴って土壌を耕耘する耕耘部6に、接地により耕耘部6の耕深を調節する尾ソリ16などの接地部材を備える歩行型作業機1において、尾ソリ16に、非作業移動時に耕耘部6を土壌面又は路面から浮かせる移動用の尾輪体17を取り付けると共に、該尾輪体17の姿勢を、尾ソリ16の下端よりも下方に突出する作用姿勢と、尾ソリ16の下端よりも上方に退避する非作用姿勢とに切換可能にするにあたり、尾輪体17を、前後を向く回動軸心(回動軸18)を中心とする回動によって、作用姿勢と非作用姿勢とに切換えるようにしたので、尾輪体17を非作用姿勢とする場合に、尾輪体17を垂直な姿勢を維持したまま上方に退避させるのではなく、尾輪体17を水平姿勢に近づけながら上方に退避させることができる。これにより、非作用姿勢における尾輪体17の上端高さを低く抑え、耕耘部6の後方にアタッチメントを装着して行う作業において、尾輪体17とアタッチメントが干渉してしまうという問題を解消できる。   According to the present embodiment configured as described, the walking type work is provided with the grounding member such as the tail sled 16 that adjusts the plowing depth of the tilling unit 6 by the grounding to the tilling unit 6 that tills the soil as the aircraft runs. In the machine 1, a tail wheel body 17 is attached to the tail sled 16 for moving the tiller 6 from the soil surface or the road surface during non-working movement, and the tail wheel body 17 is positioned more than the lower end of the tail sled 16. In order to switch between a working posture projecting downward and a non-working posture retracting upward from the lower end of the tail sled 16, the tail wheel body 17 has a pivot axis (rotating shaft 18) facing front and rear. Since it is switched between the action posture and the non-action posture by turning around the center, when the tail wheel body 17 is set to the non-action posture, the tail wheel body 17 is retracted upward while maintaining the vertical posture. Rather than close the tail wheel body 17 to a horizontal posture It can be retracted to want upward. Thereby, the upper end height of the tail wheel body 17 in the non-acting posture is kept low, and the problem that the tail wheel body 17 and the attachment interfere with each other in the work performed by attaching the attachment to the rear of the tillage unit 6 can be solved. .

また、尾輪体17の回動をロックする回動ロック手段を設けるにあたり、該回動ロック手段は、非作用姿勢における尾輪体17の回動を、尾輪体17が地面と略平行になる位置でロックするので、非作用姿勢における尾輪体17の上端高さを、尾輪体17の回動軸心と略同じ高さに抑えることができ、その結果、尾輪体17とアタッチメントの干渉をより確実に回避することができる。   Further, when providing the rotation lock means for locking the rotation of the tail wheel body 17, the rotation lock means allows the tail wheel body 17 to rotate in the non-acting posture so that the tail wheel body 17 is substantially parallel to the ground. Therefore, the upper end height of the tail wheel body 17 in the non-acting posture can be suppressed to substantially the same height as the rotational axis of the tail wheel body 17, and as a result, the tail wheel body 17 and the attachment Interference can be avoided more reliably.

尚、本発明は、前記実施形態に限定されないことは勿論であって、例えば、尾輪体は、接地により走行抵抗を付与するダッシング防止用の抵抗部材(抵抗棒)などの接地部材に設けてもよい。   Of course, the present invention is not limited to the above-described embodiment. For example, the tail wheel body is provided on a grounding member such as a resistance member (resistance rod) for preventing dashing that imparts running resistance by grounding. Also good.

[参考例]
次に、参考例に係る歩行型作業機について、図7を参照して説明する。この図に示すように、この図に示すように、参考例に係る歩行型作業機では、尾ソリ101に尾輪体102を設けるにあたり、尾輪体102を、左右を向く回動軸心を中心とする回動によって、作用姿勢と非作用姿勢とに切換えるようにしている。また、尾輪体102は、スプリング103により常時上方に向けて付勢されると共に、ワイヤーケーブル104を介してハンドル105の操作レバー106に連繋されている。つまり、参考例の尾輪体102は、スプリング103の付勢力で非作用姿勢に保持されており、作用姿勢に切換える場合は、操作レバー106を握って尾輪体102を下方へ回動させると共に、操作レバー106の位置をロックプレート107によりロックする。このような尾輪体102によれば、作用姿勢と非作用姿勢の切換えを、ハンドル105に設けられる操作レバー106の操作で容易に行うことが可能であるが、尾輪体102を、左右を向く回動軸心を中心とする回動によって、作用姿勢と非作用姿勢とに切換えるため、耕耘部の後方にアタッチメントを装着して行う作業においては、尾輪体102とアタッチメントが干渉してしまうという問題がある。
[Reference example]
Next, a walking work machine according to a reference example will be described with reference to FIG. As shown in this figure, as shown in this figure, in the walking type work machine according to the reference example, when the tail wheel body 102 is provided on the tail sled 101, the tail wheel body 102 is provided with a rotation axis that faces left and right. Switching between a working posture and a non-working posture is performed by turning around the center. The tail wheel body 102 is always urged upward by a spring 103 and is connected to an operation lever 106 of a handle 105 via a wire cable 104. That is, the tail wheel body 102 of the reference example is held in the non-acting posture by the biasing force of the spring 103, and when switching to the acting posture, the tail wheel body 102 is rotated downward by grasping the operation lever 106. The position of the operation lever 106 is locked by the lock plate 107. According to such a tail wheel body 102, it is possible to easily switch between the action posture and the non-action posture by operating the operation lever 106 provided on the handle 105. Since the rotation is centered on the rotation axis that faces, the working posture and the non-working posture are switched, so that the tail wheel body 102 and the attachment interfere with each other when the attachment is attached to the rear of the tillage unit. There is a problem.

歩行型作業機の側面図である。It is a side view of a walk type work machine. 尾輪体及び回動ロック手段を示す要部側面図である。It is a principal part side view which shows a tail wheel body and a rotation lock means. 尾輪体及び回動ロック手段を示す要部背面図である。It is a principal part rear view which shows a tail wheel body and a rotation lock means. 尾輪体及び回動ロック手段を示す要部断面図である。It is principal part sectional drawing which shows a tail wheel body and a rotation lock means. (A)は回動軸及び尾輪体の斜視図、(B)は他例を示す斜視図である。(A) is a perspective view of a rotating shaft and a tail wheel body, (B) is a perspective view showing another example. 尾ソリ高さ調節部の断面図である。It is sectional drawing of a tail warp height adjustment part. 参考例に係る歩行型作業機の要部側面図である。It is a principal part side view of the walk type work machine concerning a reference example.

符号の説明Explanation of symbols

1 歩行型作業機
4 車輪
6 耕耘部
16 尾ソリ
17 尾輪体
18 回動軸
19 ボス
20 バネ
22 カバー体
DESCRIPTION OF SYMBOLS 1 Walking type work machine 4 Wheel 6 Tilling part 16 Tail warp 17 Tail wheel body 18 Rotating shaft 19 Boss 20 Spring 22 Cover body

Claims (2)

機体走行に伴って土壌を耕耘する耕耘部に、接地により耕耘部の耕深を調節する耕深調節部材、又は、接地により走行抵抗を付与するダッシング防止用の抵抗部材として機能する接地部材を備える歩行型作業機において、
前記接地部材に、非作業移動時に耕耘部を土壌面又は路面から浮かせる移動用の尾輪体を取り付けると共に、該尾輪体の姿勢を、接地部材の下端よりも下方に突出する作用姿勢と、接地部材の下端よりも上方に退避する非作用姿勢とに切換可能にするにあたり、尾輪体を、前後を向く回動軸心を中心とする回動によって、作用姿勢と非作用姿勢とに切換えることを特徴とする歩行型作業機。
A plowing section that plows soil as the machine travels is provided with a plowing depth adjusting member that adjusts the plowing depth of the plowing part by grounding or a grounding member that functions as a resistance member for preventing dashing that provides running resistance by grounding. In walking type work machines,
The grounding member is attached with a moving tail wheel body that floats the tillage part from the soil surface or road surface during non-working movement, and the posture of the tail wheel body is an action posture that projects downward from the lower end of the grounding member; In order to be able to switch to a non-acting posture that retreats above the lower end of the grounding member, the tail wheel body is switched between an acting posture and a non-acting posture by pivoting about a pivot axis that faces forward and backward. This is a walking work machine.
前記尾輪体の回動をロックする回動ロック手段を設けるにあたり、該回動ロック手段は、非作用姿勢における尾輪体の回動を、尾輪体が地面と略平行になる位置でロックすることを特徴とする請求項1記載の歩行型作業機。   In providing rotation lock means for locking the rotation of the tail wheel body, the rotation lock means locks the rotation of the tail wheel body in a non-acting posture at a position where the tail wheel body is substantially parallel to the ground. The walking type work machine according to claim 1, wherein:
JP2007055054A 2007-03-06 2007-03-06 Walking-type working machine Pending JP2008212073A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010106956A1 (en) * 2009-03-18 2010-09-23 ヤンマー株式会社 Walking type management machine
JP2011062180A (en) * 2009-09-18 2011-03-31 Yanmar Co Ltd Walking type tending machine
JP2011115171A (en) * 2011-02-02 2011-06-16 Yanmar Co Ltd Walking type husbandry machine
JP2012065571A (en) * 2010-09-22 2012-04-05 Mitsubishi Agricultural Machinery Co Ltd Walking type plant husbandry machine
JP2012105622A (en) * 2010-11-19 2012-06-07 Mitsubishi Agricultural Machinery Co Ltd Walking type tending machine
EP2532219A1 (en) * 2011-06-07 2012-12-12 Amazonen-Werke H. Dreyer GmbH & Co. KG Placement device for a three-point attachable machine
ITRE20110069A1 (en) * 2011-09-16 2013-03-17 Eurosystems S P A IMPROVED AGRICULTURAL TOOL
JP2017192305A (en) * 2016-04-18 2017-10-26 有限会社鷹岡工業所 Management machine

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010106956A1 (en) * 2009-03-18 2010-09-23 ヤンマー株式会社 Walking type management machine
JP2010213662A (en) * 2009-03-18 2010-09-30 Yanmar Co Ltd Walking type tending machine
JP2011062180A (en) * 2009-09-18 2011-03-31 Yanmar Co Ltd Walking type tending machine
JP2012065571A (en) * 2010-09-22 2012-04-05 Mitsubishi Agricultural Machinery Co Ltd Walking type plant husbandry machine
JP2012105622A (en) * 2010-11-19 2012-06-07 Mitsubishi Agricultural Machinery Co Ltd Walking type tending machine
JP2011115171A (en) * 2011-02-02 2011-06-16 Yanmar Co Ltd Walking type husbandry machine
EP2532219A1 (en) * 2011-06-07 2012-12-12 Amazonen-Werke H. Dreyer GmbH & Co. KG Placement device for a three-point attachable machine
ITRE20110069A1 (en) * 2011-09-16 2013-03-17 Eurosystems S P A IMPROVED AGRICULTURAL TOOL
EP2570014A1 (en) * 2011-09-16 2013-03-20 Eurosystems S.P.A. An improved agricultural apparatus
JP2017192305A (en) * 2016-04-18 2017-10-26 有限会社鷹岡工業所 Management machine

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