JP6035118B2 - Tillage work machine - Google Patents

Tillage work machine Download PDF

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JP6035118B2
JP6035118B2 JP2012248024A JP2012248024A JP6035118B2 JP 6035118 B2 JP6035118 B2 JP 6035118B2 JP 2012248024 A JP2012248024 A JP 2012248024A JP 2012248024 A JP2012248024 A JP 2012248024A JP 6035118 B2 JP6035118 B2 JP 6035118B2
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rolling wheel
rolling
shaft portion
end side
soil
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JP2014093984A (en
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創一 和栗
創一 和栗
拓也 河本
拓也 河本
準 遠藤
準 遠藤
直土 末平
直土 末平
宏行 草野
宏行 草野
浩志 平本
浩志 平本
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KOBASHI INDUSTRIES CO., LTD.
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KOBASHI INDUSTRIES CO., LTD.
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Description

本発明は、耕土表面を転圧する転圧輪内に設けられ転圧輪の回転時に転圧輪内に侵入した土を破砕する砕土用部材が設けられた耕耘作業機に関するものである。   The present invention relates to a tilling work machine provided with a crushing member provided in a rolling wheel for rolling the surface of the cultivated soil and crushing soil that has entered the rolling wheel during rotation of the rolling wheel.

耕耘作業機によって耕耘された耕土は、一般的に、隙間の多い状態にあり、耕耘作業機の整地板によって耕土表面を整地しても、隙間を小さくして締め固めることは困難である。このため、耕耘後の耕土は播種には適さず、また風が吹くと土が舞う等の不都合が生じる。そこで、耕耘作業機によって耕耘された耕土の表面を転圧可能な転圧輪が一般的に使用されている。   The cultivated soil cultivated by the cultivator is generally in a state where there are many gaps, and even if the surface of the cultivated soil is leveled by the leveling plate of the cultivator, it is difficult to make the gap small and compact. For this reason, the cultivated soil after tillage is not suitable for sowing, and when the wind blows, the soil flies. Therefore, a rolling wheel capable of rolling the surface of the cultivated soil cultivated by the tilling machine is generally used.

この転圧輪には、特許文献１に記載されているように、耕耘作業機の後方に配置されて、両側に設けられた一対の側盤間に棒鋼が周方向に適宜間隔を有して配置されるとともに軸方向に傾斜させたかご型転圧輪（文献ではかご型整地ローラー）が知られている。このかご型転圧輪の内部には砕土部材が設けられている。   In this rolling wheel, as described in Patent Document 1, a steel bar is disposed at the rear of the tilling work machine, and a pair of side panels provided on both sides are appropriately spaced in the circumferential direction. 2. Description of the Related Art A cage-type rolling wheel (a cage-type leveling roller in the literature) that is arranged and inclined in the axial direction is known. A crushed member is provided inside the cage rolling wheel.

この砕土部材は、かご型転圧輪の両側盤に回転自在に支持されてかご型整地ロータの内側へ延びる一対の掛止具間に架け渡されたチェーンを有してなる。チェーンは、その長手方向中央部が弛んだ状態で一対の掛止具間に架け渡されている。このチェーンは、耕耘作業機を牽引する走行機体が走行してかご型転圧輪が回転すると、進行方向に対して前後方向に振られて、かご型転圧輪内に侵入した土塊を細かく砕く。   The crushed member has a chain that is rotatably supported on both side panels of a squirrel-type rolling wheel and is extended between a pair of hooks extending inward of the squirrel-carrying rotor. The chain is stretched between a pair of hooks in a state where the longitudinal center portion thereof is slack. This chain is shaken in the front-rear direction with respect to the traveling direction when the traveling body that pulls the tillage working machine travels and rotates, and finely breaks up the lump that has entered the cage-type compaction wheel. .

また、転圧輪には、特許文献２に記載されているように、軸芯方向に所定間隔を有して配置された複数の円盤状のプレートの外周にバーが螺旋状に巻き付けられたもの（文献ではローラ）が開示されている。この転圧輪の両端に配置された一対のプレートには、転圧輪の軸心方向に延びるシャフトが固着されている。   In addition, as described in Patent Document 2, the rolling wheel has a bar spirally wound around the outer periphery of a plurality of disk-shaped plates arranged at predetermined intervals in the axial direction. (Laura in the literature) is disclosed. A shaft extending in the axial direction of the rolling wheel is fixed to a pair of plates disposed at both ends of the rolling wheel.

シャフトはプレートの両側方に延び、プレートから外側へ延びるシャフトはベアリングユニットを介して転圧輪を支持するローラフレームに回転自在に支持され、プレートから内側へ延びるシャフトには、ベアリングユニットを介してブラケットが回転可能に取り付けられている。このブラケットには直線状に延びる砕土用部材（文献ではバー）の一端部が取り付けられ、砕土部材の他端側は転圧輪の軸芯方向に沿って延びてローラの他端部に設けられたブラケットに取り付けられている。   The shaft extends on both sides of the plate, the shaft extending outward from the plate is rotatably supported by a roller frame that supports the rolling wheel via the bearing unit, and the shaft extending inward from the plate is supported via the bearing unit. The bracket is mounted for rotation. One end of a straight-crushing member (bar in the literature) is attached to the bracket, and the other end of the crushing member extends along the axial direction of the rolling wheel and is provided at the other end of the roller. Attached to the bracket.

この転圧輪の回転時には、ブラケット及び砕土用部材は回転しないので、転圧輪内に侵入した土塊は、転圧輪の回転とともに回転させながら砕土用部材に衝突して小さく砕かれる。   Since the bracket and the crushing member do not rotate during the rotation of the rolling wheel, the lump that has entered the rolling wheel collides with the crushing member while being rotated with the rotation of the rolling wheel and is crushed into small pieces.

実開昭６１−２０１０５号公報Japanese Utility Model Publication No. 61-20105 特開２０１０−９４０３６号公報JP 2010-94036 A

特許文献１に記載の砕土用部材は、チェーンであるので変形が自在である。このため、かご型転圧輪の回転時には、砕土用部材は、転圧輪内部で振り子のごとく前後方向に揺動したり、遊びを持って不規則に動いたりするので、砕土用部材による土塊を砕く力は比較的に弱い。従って、粘土質の強い土塊や雪だるま式に膨らんだ大きな土塊に対する砕土用部材の破砕能力は低い。   Since the member for ground breaking of patent document 1 is a chain, it can change freely. For this reason, when the squirrel-type rolling wheel rotates, the crushing member swings back and forth like a pendulum inside the rolling wheel or moves irregularly with play. The power to crush is relatively weak. Therefore, the crushing capacity of the crushing member for a clayey strong clot or a large clot swollen like a snowman is low.

また、特許文献２に記載の転圧輪内に設けられた砕土用部材は、その両端部が転圧輪の両側に配設されたブラケットに支持され、砕土用部材の支点間距離は比較的に大きい。このため、砕土用部材に負荷が作用すると、砕土用部材の変形が大きくなり易く、砕土用部材が破損したり砕土用部材がブラケットから脱落したりする虞がある。   Further, the ground breaking member provided in the rolling wheel described in Patent Document 2 is supported at both ends by brackets disposed on both sides of the rolling wheel, and the distance between the fulcrum of the ground breaking member is relatively long. Big. For this reason, when a load acts on the member for crushed soil, deformation of the member for crushed soil tends to be large, and the member for crushed soil may be damaged or the member for crushed soil may fall off from the bracket.

本発明は、このような問題に鑑みてなされたものであり、土塊に対する破砕能力が高く、また破損し脱落する虞が少ない砕土用部材を備えた耕耘作業機を提供することを目的とする。   This invention is made | formed in view of such a problem, and it aims at providing the tilling work machine provided with the member for crushed soil with the high crushing capability with respect to a clot, and there is little possibility that it breaks and falls.

上記目的を達成するために本発明の耕耘作業機は、耕耘作業を行う作業機本体の後方に設けられ、作業機本体の幅方向に延びて支持される軸部を中心として回転自在に支持されて圃場の土を転圧する転圧輪を備える耕耘作業機であって、軸部は、転圧輪の幅方向一端側から他端側に亘って貫通して延び、転圧輪は、軸部に回転自在に支持されていることを特徴とする（請求項１）。   In order to achieve the above object, the tillage working machine of the present invention is provided behind the working machine main body for performing the tilling work, and is supported rotatably around a shaft portion that extends and is supported in the width direction of the working machine main body. The tiller is provided with a rolling wheel that rolls the soil in the field, and the shaft portion extends through from one end side to the other end side in the width direction of the rolling wheel, and the rolling wheel includes the shaft portion. It is supported so that it can rotate freely (Claim 1).

また、本発明の転圧輪内を延びる軸部には、転圧輪の回転時に該転圧輪内に侵入した土を破砕する砕土用部材が設けられていることを特徴とする（請求項２）。   Further, the shaft portion extending in the rolling wheel of the present invention is provided with a member for crushing soil that crushes the soil that has entered the rolling wheel during rotation of the rolling wheel. 2).

また、本発明の砕土用部材は、軸部に一端側が固定されて他端側が転圧輪の径方向へ延びて転圧輪の周方向に弾性変形可能であることを特徴とする（請求項３）。   The ground breaking member of the present invention is characterized in that one end side is fixed to the shaft portion and the other end side extends in the radial direction of the rolling wheel and is elastically deformable in the circumferential direction of the rolling wheel. 3).

また、本発明の転圧輪は、その外周に周方向に所定間隔を有して配設されるとともに転圧輪の幅方向一端側から他端側に延びる複数の転圧バーを有し、砕土用部材の他端部は、複数の各転圧バーに接触可能に延びていることを特徴とする（請求項４）。   The rolling wheel of the present invention has a plurality of rolling bars that are arranged on the outer periphery with a predetermined interval in the circumferential direction and extend from one end side to the other end side in the width direction of the rolling wheel, The other end of the crushed soil member extends so as to be in contact with each of the plurality of rolling bars (claim 4).

また、本発明の砕土用部材は、一端側が軸部に回動自在に接続され他端側が転圧輪の径方向へ延び、他端部に錘部材が設けられて他端側が揺動自在であることを特徴とする（請求項５）。   Further, the ground breaking member of the present invention has one end side rotatably connected to the shaft portion, the other end side extends in the radial direction of the rolling wheel, and a weight member is provided on the other end portion so that the other end side is swingable. (Claim 5).

また、本発明の砕土用部材は、軸部の回転軸方向に所定間隔を有して取り付けられて転圧輪の径方向外側へ延びる一対の支持部材（実施の形態における支持板８１）間に回動自在に支持された回転体（実施の形態における砕土ローラ８３）を備えることを特徴とする（請求項６）。   Further, the ground breaking member of the present invention is attached between a pair of support members (support plates 81 in the embodiment) that are attached with a predetermined interval in the rotation axis direction of the shaft portion and extend radially outward of the rolling wheel. The rotating body (crushing roller 83 in the embodiment) is rotatably supported (claim 6).

本発明に係わる農業用整地ロータによれば、上記特徴を有することにより、砕土部材の土塊に対する破砕能力が高く、また砕土部材が破損し脱落する虞が少ない転圧輪が設けられた耕耘作業機を提供することができる。   According to the agricultural leveling rotor according to the present invention, a tilling work machine provided with a compaction wheel having the above-described characteristics and having a high crushing capacity for the clump of the crushing member and less risk of the crushing member being damaged and falling off. Can be provided.

本発明の一実施の形態に係わる転圧輪が設けられた耕耘作業機の側面図を示す。The side view of the tillage working machine provided with the compaction wheel concerning one embodiment of the present invention is shown. 転圧輪が設けられた耕耘作業機の平面図を示す。The top view of the tillage working machine provided with the rolling wheel is shown. 転圧輪が設けられた耕耘作業機の背面図を示す。The rear view of the tillage working machine provided with the rolling wheel is shown. 転圧輪を示し、同図（ａ）は正面視における転圧輪の部分断面内部構造図であり、同図（ｂ）は、同図（ａ）のIV−IV矢視に相当する転圧輪の断面図である。FIG. 2A shows a rolling wheel, and FIG. 1A is a partial cross-sectional internal structure diagram of the rolling wheel in a front view, and FIG. 2B shows a rolling pressure corresponding to the IV-IV arrow in FIG. 1A. It is sectional drawing of a ring | wheel. 他の転圧輪を示し、同図（ａ）は正面視における他の転圧輪の部分断面内部構造図であり、同図（ｂ）は、同図（ａ）のV−V矢視に相当する転圧輪の断面図である。The other rolling-wheel is shown, The figure (a) is a partial cross-section internal structure figure of the other rolling-wheel in a front view, The figure (b) is a VV arrow view of the figure (a). It is sectional drawing of a corresponding rolling wheel. 他の転圧輪を示し、同図（ａ）は正面視における他の転圧輪の部分断面内部構造図であり、同図（ｂ）は、同図（ａ）のVI−VI矢視に相当する転圧輪の断面図である。The other rolling-wheel is shown, The figure (a) is a partial cross-section internal structure figure of the other rolling-wheel in the front view, The figure (b) is a VI-VI arrow view of the figure (a). It is sectional drawing of a corresponding rolling wheel. 他の転圧輪を示し、同図（ａ）は正面視における他の転圧輪の部分断面内部構造図であり、同図（ｂ）は、同図（ａ）のVII−VII矢視に相当する転圧輪の断面図である。The other rolling-wheel is shown, The figure (a) is a partial cross-section internal structure figure of the other rolling-wheel in a front view, The figure (b) is the VII-VII arrow view of the figure (a). It is sectional drawing of a corresponding rolling wheel.

以下、本発明の好ましい実施の形態を図１〜図７に基づいて説明する。先ず、耕耘作業機に装着される転圧輪を説明する前に、耕耘作業機の全体構成について、図１（側面図）及び図２（平面図）を参照しながら説明する。なお、図２に示す矢印の方向を前後方向及び左右方向として以下説明する。   Hereinafter, preferred embodiments of the present invention will be described with reference to FIGS. First, before explaining the rolling wheel mounted on the tilling work machine, the entire structure of the tilling work machine will be described with reference to FIG. 1 (side view) and FIG. 2 (plan view). In addition, the direction of the arrow shown in FIG.

耕耘作業機１は、図１及び図２に示すように、幅方向（左右方向）に延びる主フレーム３を有した作業機本体５の前部に、走行機体９０の後部に設けられた図示しない３点リンク連結機構に連結されるトップマスト６とロアーリンク連結部７を設けて、走行機体９０の後部に対して昇降可能に装着される。主フレーム３の左右方向の中央部には前方へ突出する入力軸８ａ（図１参照）を備えたギアボックス８が設けられ、走行機体９０のＰＴＯ軸からユニバーサルジョイント等の動力伝達手段を介して動力が入力軸８ａに伝達されるようになっている。   As shown in FIGS. 1 and 2, the tillage work machine 1 is not shown provided at the rear part of the traveling machine body 90 at the front part of the work machine body 5 having the main frame 3 extending in the width direction (left-right direction). A top mast 6 and a lower link connecting portion 7 connected to the three-point link connecting mechanism are provided, and are attached to the rear portion of the traveling machine body 90 so as to be movable up and down. A gear box 8 having an input shaft 8a (see FIG. 1) that protrudes forward is provided at the center in the left-right direction of the main frame 3, and the PTO shaft of the traveling machine body 90 is connected to a power transmission means such as a universal joint. Power is transmitted to the input shaft 8a.

主フレーム３の一方側（左側）の端部には、チェーン伝動ケース９が垂設され、主フレーム３の他方側（右側）の端部には側部フレーム１０（図２参照）がチェーン伝動ケース９と対向して垂設されている。チェーン伝動ケース９に接続された主フレーム３の左側の部分及びチェーン伝動ケース９内には伝動機構が設けられ、チェーン伝動ケース９と側部フレーム１０の下端部間に多数の耕耘爪１２（図１参照）を取り付けたロータリ作業体１１（図１参照）が回転自在に設けられている。そして、入力軸８ａに伝達された動力は、ギアボックス８を介して主フレーム３及びチェーン伝動ケース９内の伝動機構に伝達されて、ロータリ作業体１１を所定方向に回転させる。   A chain transmission case 9 is suspended from one end (left side) of the main frame 3, and a side frame 10 (see FIG. 2) is connected to the other end (right side) of the main frame 3. Opposite to the case 9, it is suspended. A transmission mechanism is provided in the left side portion of the main frame 3 connected to the chain transmission case 9 and in the chain transmission case 9, and a plurality of tilling claws 12 (see FIG. 5) are provided between the chain transmission case 9 and the lower ends of the side frames 10. 1 (see FIG. 1) is rotatably provided. Then, the power transmitted to the input shaft 8a is transmitted to the transmission mechanism in the main frame 3 and the chain transmission case 9 via the gear box 8 to rotate the rotary working body 11 in a predetermined direction.

ロータリ作業体１１の上側は、上部カバー１５（図２参照）によって覆われ、この上部カバー１５の左右方向両端部には側部カバー１７が設けられている。上部カバー１５は、ロータリ作業体１１の前側から後方側に延び、上部カバー１５の後端部には、整地板２０が上下方向に回動自在に取り付けられている。   The upper side of the rotary working body 11 is covered with an upper cover 15 (see FIG. 2), and side covers 17 are provided at both ends of the upper cover 15 in the left-right direction. The upper cover 15 extends from the front side to the rear side of the rotary working body 11, and a leveling plate 20 is attached to the rear end portion of the upper cover 15 so as to be rotatable in the vertical direction.

整地板２０は上部カバー１５の後端から斜め下方へ延び、整地板２０の後端部によって耕土表面を平らに整地する。整地板２０の背面と主フレーム３との間には、整地板２０の傾き角度を調節する角度調節装置２２が設けられている。整地板２０の幅方向両端部には整地板２０による整地作業を延長可能な延長整地板２４が展開且つ折り畳み可能に設けられている。なお、図１には延長整地板２４の記載が省略されている。作業機本体５の前部の両側には、ロータリ作業体１１の耕深の調整を行う接地輪２６が一対設けられている。   The leveling plate 20 extends obliquely downward from the rear end of the upper cover 15, and the ground surface is leveled flat by the rear end of the leveling plate 20. Between the back surface of the leveling plate 20 and the main frame 3, an angle adjusting device 22 that adjusts the inclination angle of the leveling plate 20 is provided. At both ends in the width direction of the leveling plate 20, an extended leveling plate 24 that can extend the leveling work by the leveling plate 20 is provided so as to be able to be unfolded and folded. In FIG. 1, the extended leveling plate 24 is not shown. A pair of grounding wheels 26 for adjusting the working depth of the rotary work body 11 are provided on both sides of the front portion of the work machine body 5.

このように構成された耕耘作業機１は、走行機体９０の前進走行に伴って進行しながら、ロータリ作業体１１によって耕土を耕耘し、整地板２０によって耕耘された耕土表面を整地する。この耕耘された耕土を転圧するのが転圧輪５０である。   The tilling work machine 1 configured as described above cultivates the cultivated soil by the rotary working body 11 while the traveling machine body 90 moves forward, and leveles the cultivated soil surface cultivated by the leveling plate 20. A rolling wheel 50 is used to roll the cultivated soil.

次に、転圧輪５０及びこれを支持する支持機構３０を図１、図２、図３（背面図）、図４（ａ）（正面視の部分断面内部構造図）、図４（ｂ）（断面図）を参照しながら説明する。転圧輪５０は、図１及び図２に示すように、耕耘作業機１の作業機本体５の後方に配置され、主フレーム３に設けられた支持機構３０を介して上下且つ前後方向に位置調整可能に設けられている。   Next, FIG. 1, FIG. 2, FIG. 3 (rear view), FIG. 4 (a) (partial cross-sectional internal structure diagram in front view), FIG. This will be described with reference to (sectional view). As shown in FIGS. 1 and 2, the rolling wheel 50 is disposed behind the working machine main body 5 of the tilling work machine 1, and is positioned up and down and in the front-rear direction via a support mechanism 30 provided on the main frame 3. Adjustable.

支持機構３０は、主フレーム３の長手方向中間部に所定距離を有して並設されて前端部が主フレーム３に回動自在に接続されて後側が後方側へ延びる一対の支持アーム部材３１と、一対の支持アーム部材３１の前後方向中間部間を連結する前側連結部材３２（図２参照）に後端部が接続されトップマスト６に前端部が接続された伸縮ロッド３４とを有してなる。   The support mechanism 30 is a pair of support arm members 31 that are arranged side by side with a predetermined distance in the longitudinal direction intermediate portion of the main frame 3, the front end portion is rotatably connected to the main frame 3, and the rear side extends rearward. And a telescopic rod 34 having a rear end connected to the front side connecting member 32 (see FIG. 2) for connecting the middle portions in the front-rear direction of the pair of support arm members 31 and a front end connected to the top mast 6. It becomes.

伸縮ロッド３４は、雄ねじが形成されたロッド部３４ａと、雌ねじが形成されたボトム部３４ｂとを有してなり、ロッド部３４ａをボトム部３４ｂに対して回動させることでボトム部３４ｂに対してロッド部３４ａが突出入して伸縮ロッド３４の伸長量を調整することができる。ロッド部３４ａの前端部には操作ハンドル３４ｃが設けられ、操作ハンドル３４ｃの操作によってロッド部３４ａを回動させることができる。ロッド部３４ａの軸方向中間部は、トップマスト６に設けられた支持板３３に前後方向に移動自在で且つ回動自在に取り付けられている。   The telescopic rod 34 has a rod portion 34a on which a male screw is formed and a bottom portion 34b on which a female screw is formed. By rotating the rod portion 34a with respect to the bottom portion 34b, the rod portion 34a is rotated with respect to the bottom portion 34b. As a result, the rod portion 34a protrudes and the extension amount of the telescopic rod 34 can be adjusted. An operation handle 34c is provided at the front end of the rod portion 34a, and the rod portion 34a can be rotated by operating the operation handle 34c. An intermediate portion in the axial direction of the rod portion 34 a is attached to a support plate 33 provided on the top mast 6 so as to be movable in the front-rear direction and to be rotatable.

また、ロッド部３４ａには圧縮ばね３５が装着されている。この圧縮ばね３５は、通常の作業時には転圧輪５０を圃場に附勢し、転圧輪５０に石等の障害物が衝突した時には縮小して転圧輪５０に作用する衝撃を吸収する。   A compression spring 35 is attached to the rod portion 34a. The compression spring 35 urges the rolling wheel 50 to a farm field during normal work, and when the obstacle such as a stone collides with the rolling wheel 50, the compression spring 35 is contracted to absorb the impact acting on the rolling wheel 50.

一対の支持アーム部材３１の後側には、図２及び図３に示すように、これら支持アーム部材３１間を連結する後側連結部材３６が取り付けられている。後側連結部材３６の幅方向両端部には下方が開口した逆Ｕ字状の取付部材３７が設けられている。取付部材３７は支持アーム部材３１の上方から装着されて支持アーム部材３１に沿って移動可能である。取付部材３７はボルト３７ａ（図２参照）を介して支持アーム部材３１に締結される。支持アーム部材３１には、前後方向に所定間隔を有して複数のねじ孔３１ａ（図１参照）が設けられ、このいずれかのねじ孔３１ａにボルト３７ａを螺合させることで、支持アーム部材３１に対する取付部材３７の前後位置を調整して固定することができる。   As shown in FIGS. 2 and 3, a rear connection member 36 that connects the support arm members 31 is attached to the rear side of the pair of support arm members 31. At both ends in the width direction of the rear side connecting member 36, inverted U-shaped attachment members 37 that are open downward are provided. The attachment member 37 is mounted from above the support arm member 31 and is movable along the support arm member 31. The attachment member 37 is fastened to the support arm member 31 via a bolt 37a (see FIG. 2). The support arm member 31 is provided with a plurality of screw holes 31a (see FIG. 1) with a predetermined interval in the front-rear direction, and the support arm member 31 is screwed into one of the screw holes 31a. The front and rear positions of the mounting member 37 relative to 31 can be adjusted and fixed.

後側連結部材３６の中央下部には前後方向に延びる連結軸３８が設けられ、この連結軸３８に転圧輪５０を支持するフレーム４０が回動自在に支持されている。このため、転圧輪５０は連結軸３８を回動中心として転圧輪５０の両側が上下方向に回動自在である。   A connecting shaft 38 extending in the front-rear direction is provided at the center lower portion of the rear connecting member 36, and a frame 40 that supports the rolling wheel 50 is rotatably supported by the connecting shaft 38. For this reason, the roller wheel 50 is rotatable in the vertical direction on both sides of the roller wheel 50 with the connecting shaft 38 as the rotation center.

フレーム４０は、転圧輪５０の幅方向に沿って延びるフレーム上部４０ａと、フレーム上部４０ａの両端部に接続された下方へ延びるフレーム側部４０ｂとを有してなる。フレーム上部４０ａは内部が中空で断面矩形状に形成されている。フレーム側部４０ｂは側面視において長方形状に形成された板状の部材である。   The frame 40 includes a frame upper portion 40a extending along the width direction of the rolling wheel 50, and a frame side portion 40b extending downward connected to both ends of the frame upper portion 40a. The frame upper part 40a is hollow and formed in a rectangular cross section. The frame side part 40b is a plate-like member formed in a rectangular shape in a side view.

フレーム上部４０ａの長手方向中央部には、連結軸３８を通すための連結板４１が上方へ突出して設けられている。フレーム側部４０ｂは、板状であって側面視において長方形状に形成されている。このフレーム側部４０ｂに転圧輪５０の一部である軸部５１が固定されている。なお、図２及び図３は、軸部５１を見易くするために軸部５１に斜線が付加されている。   A connecting plate 41 for allowing the connecting shaft 38 to pass therethrough is provided at the center in the longitudinal direction of the frame upper portion 40a. The frame side portion 40b has a plate shape and is formed in a rectangular shape in a side view. A shaft portion 51 that is a part of the rolling wheel 50 is fixed to the frame side portion 40b. 2 and 3, hatching is added to the shaft portion 51 in order to make the shaft portion 51 easier to see.

転圧輪５０は、図３（背面図）及び図４（ａ）に示すように、耕耘作業機１の幅方向に延びる軸部５１を有し、この軸部５１に回転自在に支持されている。   As shown in FIG. 3 (rear view) and FIG. 4A, the rolling wheel 50 has a shaft portion 51 extending in the width direction of the tilling work machine 1, and is rotatably supported by the shaft portion 51. Yes.

転圧輪５０は、軸部５１の軸方向に所定間隔を有し配置された棒状の複数のプレート５３と、複数のプレート５３のうちの両端部に配設された一対のプレート５３の周縁部間に接続されて周方向に所定間隔を有して配設された複数の転圧バー５５とを有してなる。転圧バー５５は一方側（背面視左側）のプレート５３から他方（背面視右側）のプレート５３側に接近するに従って下方へ傾くように延びている。   The rolling wheel 50 includes a plurality of rod-shaped plates 53 arranged at a predetermined interval in the axial direction of the shaft portion 51, and peripheral portions of a pair of plates 53 disposed at both ends of the plurality of plates 53. And a plurality of rolling bars 55 that are connected to each other and arranged at predetermined intervals in the circumferential direction. The rolling bar 55 extends so as to incline downward from the plate 53 on one side (left side in the rear view) as it approaches the other plate 53 side (right side in the rear view).

軸部５１は、図４（ａ）に示すように、転圧輪５０の両端部に配設された一対のプレート５３の中心間に亘って延びるとともにこれらのプレート５３を貫通して外側へ延び、プレート５３から外側へ延びる軸部５１の両端部が対応するフレーム側部４０ｂに固着されている。軸部５１は両端部のプレート５３間に延びる大径軸部５１ａと、プレート５３から外側へ延びて大径軸部５１ａよりも小径な小径軸部５１ｂを有してなる。   As shown in FIG. 4A, the shaft portion 51 extends between the centers of a pair of plates 53 disposed at both ends of the rolling wheel 50 and extends outward through the plates 53. Both end portions of the shaft portion 51 extending outward from the plate 53 are fixed to the corresponding frame side portions 40b. The shaft portion 51 includes a large-diameter shaft portion 51a extending between the plates 53 at both ends, and a small-diameter shaft portion 51b extending outward from the plate 53 and having a smaller diameter than the large-diameter shaft portion 51a.

大径軸部５１ａは、転圧輪５０の回転時に転圧輪５０内に侵入した土塊を破砕する砕土用部材６０を取り付けることができるとともに、土から受ける負荷に抗して砕土用部材６０を支持可能な強度を有している。大径軸部５１ａは、必要な強度が得られれば、円柱状、円筒状、断面が矩形状の棒状部材や角筒状のいずれの形状でもよい。砕土用部材６０については後述する。   The large-diameter shaft portion 51a can be attached with a crushing member 60 for crushing a lump that has entered the rolling wheel 50 when the rolling wheel 50 is rotated, and the crushing member 60 is resisted against a load received from the soil. Has a supportable strength. The large-diameter shaft portion 51a may have any shape of a columnar member, a cylindrical member, a rod-like member having a rectangular cross section, or a rectangular tube shape as long as the required strength is obtained. The ground breaking member 60 will be described later.

小径軸部５１ｂは円柱状であり、大径軸部５１ａと略同軸上に設けられている。この小径軸部５１ｂには、小径軸部５１ｂに対して転圧輪５０を回転自在に支持するローラベアリング５６が装着されている。ローラベアリング５６は、その内輪５６ａが小径軸部５１ｂに一体的に嵌合し、外輪５６ｂのプレート側端部がプレート５３に固定されている。このため、ローラベアリング５６は内輪５６ａに対して外輪５６ｂが回転自在であるので、転圧輪５０は小径軸部５１ｂに対して回転自在である。   The small-diameter shaft portion 51b has a cylindrical shape and is provided substantially coaxially with the large-diameter shaft portion 51a. The small-diameter shaft portion 51b is provided with a roller bearing 56 that rotatably supports the rolling wheel 50 with respect to the small-diameter shaft portion 51b. The roller bearing 56 has an inner ring 56 a that is integrally fitted with the small-diameter shaft portion 51 b, and a plate-side end portion of the outer ring 56 b that is fixed to the plate 53. For this reason, since the roller bearing 56 can rotate the outer ring 56b with respect to the inner ring 56a, the roller wheel 50 can rotate with respect to the small diameter shaft portion 51b.

次に、砕土用部材６０について、図４（ａ）及び図４（ｂ）を参照しながら説明する。砕土用部材６０は、図４（ａ）及び図４（ｂ）に示すように、大径軸部５１ａの周面に装着された固定部材６１に取り付けられて下方へ延びて転圧輪５０内に侵入した土塊を破砕する複数の棒状歯部６３を有してなる。   Next, the ground breaking member 60 will be described with reference to FIGS. 4 (a) and 4 (b). As shown in FIGS. 4A and 4B, the crushed soil member 60 is attached to a fixing member 61 mounted on the peripheral surface of the large-diameter shaft portion 51a, and extends downward to enter the rolling wheel 50. It has a plurality of rod-like tooth portions 63 for crushing the earth lump that has entered.

固定部材６１は、一方側の側面が開口したみぞ型の部材である。固定部材６１は大径軸部５１ａの周面に沿って延びるように配置されて、固定部材６１に接続された装着リング６４（図４（ｂ）参照）を介して大径軸部５１ａに固定されている。装着リング６４は２分割可能な２つのリング本体６４ａを有して、大径軸部５１ａの外周に沿って装着される。これらのリング本体６４ａはボルト６５及びナット６６によって締結されて連結される。   The fixing member 61 is a groove-shaped member having an open side surface on one side. The fixing member 61 is disposed so as to extend along the peripheral surface of the large-diameter shaft portion 51a, and is fixed to the large-diameter shaft portion 51a via a mounting ring 64 (see FIG. 4B) connected to the fixing member 61. Has been. The mounting ring 64 has two ring bodies 64a that can be divided into two, and is mounted along the outer periphery of the large-diameter shaft portion 51a. These ring main bodies 64a are fastened and connected by bolts 65 and nuts 66.

棒状歯部６３は、ばね用部材で形成された棒状部材であり、その一端部が固定部材６１の側面に固定され、他端側が環状に形成されて変形の支点となる環状部６３ａと、環状部６３ａから下方へ延出して直線状に延びる直線部６３ｂとを有してなる。直線部６３ｂは転圧輪５０の転圧バー５５の内側に延びる。このため、転圧輪５０の回転時には、棒状歯部６３の直線部６３ｂが転圧バー５５に接触する虞はない。   The rod-like tooth portion 63 is a rod-like member formed of a spring member, one end portion of which is fixed to the side surface of the fixing member 61 and the other end side is formed in an annular shape, and an annular portion 63a serving as a fulcrum for deformation, It has a straight part 63b extending downward from the part 63a and extending linearly. The straight portion 63 b extends inside the rolling bar 55 of the rolling wheel 50. For this reason, when the rolling wheel 50 rotates, there is no possibility that the straight portion 63 b of the rod-like tooth portion 63 contacts the rolling bar 55.

棒状歯部６３は、直線部６３ｂが左右方向に所定間隔を有して固定部材６１の周面に左右方向に等間隔を有して複数取り付けられてレーキユニット６８を構成している。   A plurality of linear teeth 63b are attached to the peripheral surface of the fixing member 61 at equal intervals in the left-right direction with a predetermined interval in the left-right direction to constitute a rake unit 68.

棒状歯部６３が取り付けられた固定部材６１は、大径軸部５１ａの軸芯方向に所定間隔を有して複数取り付けられている。図面では３つの固定部材６１が大径軸部５１ａに取り付けられた場合を示している。なお、固定部材６１は、大径軸部５１ａへの取り付けに際し、隣接する棒状歯部６３間の距離が一定になるように大径軸部５１ａに取り付けられてもよい。   A plurality of the fixing members 61 to which the rod-like tooth portions 63 are attached are attached at predetermined intervals in the axial direction of the large-diameter shaft portion 51a. The drawing shows a case where three fixing members 61 are attached to the large-diameter shaft portion 51a. Note that the fixing member 61 may be attached to the large-diameter shaft portion 51a so that the distance between the adjacent rod-like tooth portions 63 is constant when the fixing member 61 is attached to the large-diameter shaft portion 51a.

次に、転圧輪５０の作動について、図１、図４（ａ）、図４（ｂ）を参照しながら説明する。先ず、図１に示すように、転圧輪５０の上下位置及び前後位置を調整し、転圧輪５０を圃場の表面に載置した状態にする。走行機体９０の前進走行に伴って耕耘作業機１のロータリ作業体１１が圃場の土を耕耘し、整地板２０が圃場表面を整地し、転圧輪５０が耕耘作業機１の前進に伴って回転する。   Next, the operation of the rolling wheel 50 will be described with reference to FIG. 1, FIG. 4 (a), and FIG. 4 (b). First, as shown in FIG. 1, the vertical position and the front-rear position of the rolling wheel 50 are adjusted so that the rolling wheel 50 is placed on the surface of the field. As the traveling machine body 90 moves forward, the rotary work body 11 of the tilling work machine 1 plows the soil in the field, the leveling plate 20 leveles the field surface, and the rolling wheel 50 moves forward. Rotate.

転圧輪５０が回転すると、転圧輪５０の転圧バー５５によって、整地板２０で整地された土を押圧する。従って、耕耘された土の隙間は小さくなり、播種に適した耕土にすることができるとともに、風が吹いても土が多量に舞う事態を防止することができる。   When the rolling wheel 50 rotates, the soil leveled by the leveling plate 20 is pressed by the rolling bar 55 of the rolling wheel 50. Therefore, the gap between the cultivated soils can be reduced, and the cultivated soil can be made suitable for sowing, and a situation in which the soil can dance in large quantities even when wind blows can be prevented.

また、転圧輪５０の回転時に転圧輪５０内に土塊が侵入した場合、この土塊Ｓは、図４（ｂ）に示すように、砕土用部材６０の棒状歯部６３に接触して小さく砕かれる。ここで、砕土用部材６０は回転しない軸部５１に固定されているので、砕土用部材６０の棒状歯部６３は、転圧輪５０の回転時に常に下方へ延びた姿勢に維持されている。このため、転圧輪５０内に侵入した土塊Ｓを棒状歯部６３に確実に接触させて小さく砕くことができる。また、棒状歯部６３は、転圧輪５０の軸芯方向に所定間隔を有して複数配設されているので、粘土質の強い土塊や雪だるま式に膨らんだ大きな土塊に対しても接触して破砕することができる。   Further, when a clot enters the rolling wheel 50 during the rotation of the rolling wheel 50, the clot S comes into contact with the rod-like tooth portion 63 of the crushing member 60 and becomes small as shown in FIG. It is crushed. Here, since the crushed member 60 is fixed to the shaft portion 51 that does not rotate, the rod-like tooth portion 63 of the crushed member 60 is always maintained in a posture that extends downward when the rolling wheel 50 rotates. For this reason, the lump S that has entered the rolling wheel 50 can be reliably brought into contact with the rod-shaped tooth portion 63 and crushed into small pieces. In addition, since a plurality of rod-like teeth 63 are arranged at a predetermined interval in the axial center direction of the rolling wheel 50, they also come into contact with a strong clay-like soil block or a large soil block swollen in a snowball style. And can be crushed.

また、棒状歯部６３は環状部６３ａを有して直線部６３ｂの回動支点となっているので、転圧輪５０内に石等の障害物が侵入した場合、石等が棒状歯部６３に接触しても棒状歯部６３は環状部６３ａを回動支点として変形して、石等を後方側に移動させて転圧輪５０内から排出することができる。このため、転圧輪５０や砕土用部材６０の損傷を未然に防止することができる。また、砕土用部材６０は固定状態の軸部５１に固定されているので、砕土用部材６０が軸部５１から脱落する虞もない。   Further, since the rod-like tooth portion 63 has an annular portion 63a and serves as a pivotal support point for the straight portion 63b, when an obstacle such as a stone enters the rolling wheel 50, the stone or the like becomes the rod-like tooth portion 63. The rod-like tooth portion 63 can be deformed with the annular portion 63a as a pivotal fulcrum even if it comes into contact, and the stone or the like can be moved rearward to be discharged from the rolling wheel 50. For this reason, it is possible to prevent damage to the rolling wheel 50 and the crushed soil member 60 in advance. Further, since the crushed member 60 is fixed to the fixed shaft portion 51, there is no possibility that the crushed member 60 falls off the shaft portion 51.

なお、砕土用部材は前述した図４（ａ）に示すものに限るものではなく、図５〜図７に示すものでもよい。図５（ａ）及び図５（ｂ）に示す砕土用部材７０は、固定部材６１の長手方向に沿って延びるとともに固定部材６１から下方へ延びた弾性を有する板状部材である。この砕土用部材７０の上部は固定部材６１にボルト６５等によって固定され、砕土用部材７０の下側は周方向に隣接する転圧バー５５の間に位置するように延びている。   In addition, the member for ground breaking is not restricted to what is shown to Fig.4 (a) mentioned above, The thing shown in FIGS. 5-7 may be used. 5A and 5B is a plate-like member having elasticity that extends along the longitudinal direction of the fixing member 61 and extends downward from the fixing member 61. The upper part of the ground breaking member 70 is fixed to the fixing member 61 with bolts 65 or the like, and the lower side of the ground breaking member 70 extends so as to be positioned between the rolling pressure bars 55 adjacent in the circumferential direction.

このため、転圧輪５０が回動すると、砕土用部材７０の下端部が転圧バー５５の回転移動に伴って転圧バー５５によって押圧されながら転圧バー５５の回転方向に弾性変形し、転圧バー５５の回転角度がさらに大きくなると砕土用部材７０の下端部が転圧バー５５から外れて元の形状に戻る。このとき転圧輪５０内に侵入した土塊Ｓが元の形状に戻ろうとする砕土用部材７０によって叩かれて砕かれる。   For this reason, when the rolling wheel 50 rotates, the lower end portion of the crushing member 70 is elastically deformed in the rotational direction of the rolling bar 55 while being pressed by the rolling bar 55 as the rolling bar 55 rotates. When the rotation angle of the rolling bar 55 is further increased, the lower end portion of the crushing member 70 is detached from the rolling bar 55 and returns to its original shape. At this time, the soil mass S that has entered the rolling wheel 50 is struck and crushed by the member 70 for crushing the soil to return to its original shape.

また、転圧バー５５は転圧輪５０の周方向に等間隔を有して複数配設されているので、砕土用部材７０は転圧輪５０の回転時に変形して元の形状に戻る動作を周期的に繰り返す。このため、転圧輪５０内に侵入した土塊Ｓは、砕土用部材７０によって繰り返し叩かれるので、粘土質の強い土塊や雪だるま式に膨らんだ大きな土塊に対しても小さく砕くことができる。また、砕土用部材７０は弾性変形可能であるので、転圧輪５０内に石等の障害物が侵入した場合、石等が砕土用部材７０に接触しても砕土用部材７０は弾性変形して、石等を後方側に移動させて転圧輪５０内から排出することができる。このため、転圧輪５０や砕土用部材７０の損傷を未然に防止することができる。また、砕土用部材７０は固定状態の軸部５１に固定されているので、砕土用部材７０が軸部５１から脱落する虞もない。   In addition, since a plurality of rolling bars 55 are arranged at equal intervals in the circumferential direction of the rolling wheel 50, the crushing member 70 is deformed when the rolling wheel 50 rotates and returns to its original shape. Is repeated periodically. For this reason, since the soil block S that has entered the rolling wheel 50 is repeatedly hit by the crushing member 70, it can be crushed into small clay soils and large soil blocks swollen in a snowball manner. Further, since the crushing member 70 can be elastically deformed, when an obstacle such as a stone enters the rolling wheel 50, the crushing member 70 is elastically deformed even if the stone or the like contacts the crushing member 70. Thus, the stone or the like can be moved rearward and discharged from the rolling wheel 50. For this reason, damage to the rolling wheel 50 and the member 70 for crushed soil can be prevented in advance. In addition, since the crushed member 70 is fixed to the fixed shaft portion 51, there is no possibility that the crushed member 70 falls off the shaft portion 51.

図６（ａ）及び図６（ｂ）に示す砕土用部材７５は、大径軸部５１ａに大径軸部軸芯方向に所定間隔を有して装着された一対の装着リング６４に前後方向に回動自在に取り付けられている。この砕土用部材７５は、一対の装着リング６４に回動自在に支持されて大径軸部５１ａの軸芯方向に沿って延びる基端軸部７５ａと、基端軸部７５ａの両側から下方へ延びる一対の腕部７５ｂと、一対の腕部７５ｂの先端部間に亘って延びる錘部７５ｃとを有してなる。錘部７５ｃは転圧輪５０の転圧バー５５の内側の近傍位置に配置されている。このため、砕土用部材７５は、基端軸部７５ａを回動中心として錘部７５ｃが前後方向に振り子のように揺動可能である。   The ground breaking member 75 shown in FIGS. 6A and 6B is arranged in a front-rear direction on a pair of mounting rings 64 mounted on the large diameter shaft portion 51a with a predetermined interval in the axial direction of the large diameter shaft portion. Is pivotally attached to the. The ground breaking member 75 is rotatably supported by a pair of mounting rings 64 and extends along the axial direction of the large-diameter shaft portion 51a, and downward from both sides of the proximal shaft portion 75a. A pair of arm portions 75b extending and a weight portion 75c extending between the tip ends of the pair of arm portions 75b are provided. The weight portion 75 c is disposed in the vicinity of the inside of the rolling bar 55 of the rolling wheel 50. For this reason, the crushing member 75 can swing like a pendulum in the front-rear direction with the weight portion 75c around the base end shaft portion 75a.

このため、砕土用部材７５が転圧輪５０の回転時に振り子のように揺動すると、この揺動を止めるのに必要な力は比較的に大きい。従って、砕土用部材７５の揺動時に転圧輪５０内に土塊Ｓが侵入すると、前後方向に回動する砕土用部材７５の錘部７５ｃが土塊Ｓに衝突して土塊Ｓを小さく打ち砕くことができ、また粘土質の強い土塊や雪だるま式に膨らんだ大きな土塊に対しても小さく破砕することができる。さらに、転圧輪５０内に石等の障害物が侵入した場合、石等が砕土用部材７５に接触しても、砕土用部材７５は後方側に回動して、石等を後方側に移動させて転圧輪５０内から排出することができる。このため、転圧輪５０や砕土用部材７５の損傷を未然に防止することができる。また、砕土用部材７５は固定状態の軸部５１に設けられているので、砕土用部材７５が軸部５１から脱落する虞もない。   For this reason, if the crushing member 75 swings like a pendulum when the rolling wheel 50 rotates, the force required to stop the swing is relatively large. Therefore, if the earth lump S enters the rolling wheel 50 when the crushing member 75 swings, the weight portion 75c of the earth crushing member 75 that rotates in the front-rear direction collides with the earth lump S and crushes the earth lump S small. It can also be crushed into small clayey clumps and large clots swelled like a snowman. Further, when an obstacle such as a stone enters the rolling wheel 50, even if the stone or the like comes into contact with the crushing member 75, the crushing member 75 rotates to the rear side, and the stone or the like is moved to the rear side. It can be moved and discharged from the rolling wheel 50. For this reason, it is possible to prevent the rolling wheel 50 and the crushed soil member 75 from being damaged. In addition, since the ground breaking member 75 is provided on the fixed shaft portion 51, there is no possibility that the ground breaking member 75 falls off the shaft portion 51.

図７（ａ）及び図７（ｂ）に示す砕土用部材８０は、大径軸部５１ａに装着された一対の装着リング６４間に回動自在に支持されている。この砕土用部材８０は、一対の装着リング６４に取り付けられて下方へ延びる支持板８１間に回動自在に支持された円筒状の砕土ローラ８３を有している。砕土ローラ８３は、大径軸部５１ａの略真下に配置されるとともに大径軸部５１ａの軸芯方向に沿って延び、砕土ローラ８３の軸方向両側に配置されたベアリングを介して支持板８１に回動自在に支持されている。   7A and 7B is rotatably supported between a pair of mounting rings 64 mounted on the large-diameter shaft portion 51a. The soil crushing member 80 includes a cylindrical soil crushing roller 83 attached to a pair of mounting rings 64 and rotatably supported between support plates 81 extending downward. The crushing roller 83 is disposed substantially directly below the large-diameter shaft portion 51a, extends along the axial direction of the large-diameter shaft portion 51a, and supports the support plate 81 via bearings disposed on both axial sides of the crushing roller 83. It is rotatably supported by.

砕土ローラ８３の下端部と転圧輪５０の転圧バー５５の回転軌跡の内面との間、及び砕土ローラ８３の上端部と大径軸部５１ａとの間には、下側隙間８４及び上側隙間８５が形成されている。これら下側隙間８４及び上側隙間８５に転圧輪５０内に侵入した土塊Ｓが通過する。下側隙間８４は上側隙間８５よりも狭い。上側隙間８５は周方向に隣接する転圧バー５５間の距離と略同じ大きさを有する。このため、転圧輪５５内に侵入した土塊Ｓは、下側隙間８４を通過することができない場合でも、少なくとも上側隙間８５を通過する。そして、上側隙間８５を通過する土塊Ｓは砕土ローラ８３と大径軸部５１ａに接触して小さくなる。また下側隙間８４を通過する土塊Ｓは回転する転圧輪５０の転圧バー５５に衝突して小さく砕かれる。従って、転圧輪５０内で土塊Ｓが滞留する虞はなく、転圧輪５０内に侵入した土塊Ｓを小さく砕くことができ、また粘土質の強い土塊や雪だるま式に膨らんだ大きな土塊に対しても破砕することができる。   Between the lower end portion of the crushed roller 83 and the inner surface of the rotation locus of the rolling bar 55 of the rolling wheel 50, and between the upper end portion of the crushed roller 83 and the large-diameter shaft portion 51a, the lower gap 84 and the upper side are provided. A gap 85 is formed. The soil mass S that has entered the rolling wheel 50 passes through the lower gap 84 and the upper gap 85. The lower gap 84 is narrower than the upper gap 85. The upper gap 85 has substantially the same size as the distance between the rolling pressure bars 55 adjacent in the circumferential direction. For this reason, the clod S that has entered the rolling wheel 55 passes through at least the upper gap 85 even when it cannot pass through the lower gap 84. Then, the clod S passing through the upper gap 85 comes into contact with the crushing roller 83 and the large-diameter shaft portion 51a and becomes small. Further, the clod S passing through the lower gap 84 collides with the rolling bar 55 of the rotating rolling wheel 50 and is crushed into small pieces. Therefore, there is no possibility that the clod S will stay in the rolling wheel 50, and the clod S that has entered the compacting wheel 50 can be crushed into small pieces, and it can be used for strong clayy clumps and large clumps swelled like a snowball. Even it can be crushed.

さらに、転圧輪５０内に石等の障害物が侵入した場合、侵入した石等は隣接する転圧バー５５間を通過したものなので、上側隙間８５も通過可能である。このため、石等を後方側に移動させて転圧輪５０内から排出することができる。このため、転圧輪５０や砕土用部材８０の損傷を未然に防止することができる。また、砕土用部材８０は固定状態の軸部５１に固定されているので、砕土用部材８０が軸部５１から脱落する虞もない。   Further, when an obstacle such as a stone intrudes into the rolling wheel 50, the invading stone or the like has passed between the adjacent rolling pressure bars 55, so the upper gap 85 can also pass. For this reason, a stone etc. can be moved to the back side and it can discharge | emit from the inside of the compaction wheel 50. FIG. For this reason, it is possible to prevent damage to the rolling wheel 50 and the crushing member 80. In addition, since the crushed member 80 is fixed to the fixed shaft portion 51, there is no possibility that the crushed member 80 falls off the shaft portion 51.

なお、図４〜図７までの各実施例では、いずれも砕土用部材を軸部５１の軸芯方向に所定間隔をおいて配置したが、無論、所定間隔をおかず、軸部５１の軸芯方向全幅に亘って砕土用部材を配置してもよい。   4 to 7, in each of the embodiments, the members for crushing are arranged at a predetermined interval in the axial direction of the shaft portion 51. Of course, the predetermined interval is not provided and the shaft core of the shaft portion 51 is disposed. You may arrange | position the member for ground breaking over the full width of a direction.

１ 耕耘作業機
５ 作業機本体
５０ 転圧輪
５１ 軸部
５５ 転圧バー
６０、７０、７５、８０ 砕土用部材
８１ 支持板（支持部材）
８３ 砕土ローラ（回転体） DESCRIPTION OF SYMBOLS 1 Tillage working machine 5 Working machine main body 50 Rolling wheel 51 Shaft part 55 Rolling pressure bar 60, 70, 75, 80 Crushing member 81 Support plate (support member)
83 Crushing roller (rotating body)

Claims (5)

耕耘作業を行う作業機本体の後方に設けられ、前記作業機本体の幅方向に延びて支持される軸部を中心として回転自在に支持されて圃場の土を転圧する転圧輪を備える耕耘作業機であって、
前記軸部は、前記転圧輪の幅方向一端側から他端側に亘って貫通して延び、
前記転圧輪は、前記軸部に回転自在に支持されており、
前記転圧輪内を延びる軸部には、前記転圧輪の回転時に該転圧輪内に侵入した土を破砕する砕土用部材が設けられている
ことを特徴とする耕耘作業機。 Plowing work provided with a rolling wheel provided behind the working machine main body for performing the plowing work and rotatably supported around a shaft portion extending and supported in the width direction of the working machine main body to roll the soil in the field. Machine,
The shaft portion extends through from one end side in the width direction of the rolling wheel to the other end side,
The rolling wheel is rotatably supported by the shaft portion ,
A tilling work machine characterized in that a shaft portion extending in the rolling wheel is provided with a member for crushing soil that crushes soil that has entered the rolling wheel during rotation of the rolling wheel . 前記砕土用部材は、前記軸部に一端側が固定されて他端側が前記転圧輪の径方向へ延びて前記転圧輪の周方向に弾性変形可能である
ことを特徴とする請求項１に記載の耕耘作業機。 The Harrow member is in claim 1, wherein the one end side is fixed to the shaft and another end side is elastically deformed in the circumferential direction of the rolling圧輪extending in the radial direction of the rolling圧輪The described tillage machine. 前記転圧輪は、その外周に周方向に所定間隔を有して配設されるとともに前記転圧輪の幅方向一端側から他端側に延びる複数の転圧バーを有し、
前記砕土用部材の他端部は、前記複数の各転圧バーに接触可能に延びている
ことを特徴とする請求項２に記載の耕耘作業機。 The rolling wheel has a plurality of rolling bars that are arranged on the outer periphery thereof with a predetermined interval in the circumferential direction and extend from one end side to the other end side in the width direction of the rolling wheel,
The tilling work machine according to claim 2 , wherein the other end portion of the crushed soil member extends so as to be able to contact each of the plurality of rolling bars. 前記砕土用部材は、一端側が前記軸部に回動自在に接続され他端側が前記転圧輪の径方向へ延び、前記他端部に錘部材が設けられて他端側が揺動自在である
ことを特徴とする請求項１に記載の耕耘作業機。 One end side of the crushing member is pivotally connected to the shaft portion, the other end side extends in the radial direction of the rolling wheel, a weight member is provided at the other end portion, and the other end side is swingable. tilling machine according to claim 1, characterized in that. 前記砕土用部材は、前記軸部の軸芯方向に所定間隔を有して取り付けられて前記転圧輪の径方向外側へ延びる一対の支持部材間に回動自在に支持された回転体を備える
ことを特徴とする請求項１に記載の耕耘作業機。

The crushed soil member includes a rotating body that is attached to a shaft center of the shaft portion at a predetermined interval and is rotatably supported between a pair of support members that extend outward in the radial direction of the rolling wheel. tilling machine according to claim 1, characterized in that.

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