JP2009268444A - Cutting blade of flail mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that a cutting blade of a conventional flail mower has a heavy weight and tends to knock off stones or the like by strong force or be easily broken when it hits a solid material in a field, since it has a strong rotational force. <P>SOLUTION: The cutting blade 1 of the flail mower which is attached to a cutting blade holder 2 of a rotor shaft 4 as freely rotatable by a mounting member 3, consists of two divided half parts 10 making contact with each other at their contacting surfaces 110, and also each consists of one plate-like body having a left and right symmetric shape with the contacting surfaces 110 as an symmetry axis surface. Each of the plate-like bodies has a shape in which the lower part 12 of a contacting surface part 11 is twisted from the contacting surfaces 110 to an opposite lateral direction and forward direction sequentially by approximately 90 degrees, respectively, and each of the end sides of the plate-like bodies facing in rotating direction is formed as a flat front edge 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、トラクタの後部に装着して圃場等の草を刈取りながら粉砕するフレールモアの刈刃に関する。   The present invention relates to a flare mower blade that is attached to the rear part of a tractor and pulverizes while cutting grass in a field or the like.

フレールモアは、トラクタの後部に装着されて牽引されつつ圃場の草を刈り、刈った草を同時に粉砕する作用を有している。その主な構造は、トラクタの動力によって回転するロータ軸と、そのロータ軸に多数設けられた刈刃ホルダーと、その刈刃ホルダーに回動自在に取付けボルト等の取付部材によって取付けられる刈刃とから構成されている。   The flare mower has a function of cutting the grass in the field while being pulled and attached to the rear portion of the tractor, and simultaneously crushing the cut grass. The main structure includes a rotor shaft that is rotated by the power of the tractor, a plurality of cutting blade holders provided on the rotor shaft, and a cutting blade that is rotatably attached to the cutting blade holder by a mounting member such as a mounting bolt. It is composed of

従来のフレールモアの刈刃に関しては、特公昭４３−１０２９０号公報（従来技術１）に「収穫物刈取ナイフ」に関し、「縦の中間平面の両側において対称的な形状をなすプレート状の要素から成り、かつ後方の直立した、比較的横に狭い柄と、柄と一体を成す下方のシャベル状の部分とから成り、その柄はそのシャベル状の部分に前方および下方にかつ横に外方へおよび下方へ合併し、該柄は直立した前方および後方縁部と、上方の末端部と、対向して直立した縦の側部とを有し、前記下方のシャベル状部分は柄の前方縁部の前方から派生した横に比較的広い、前方の切断刃と、柄の後方縁部の下方部分の両側へ切断刃の両端部から後方および上方へ収斂する両側縁部とを有し、前記下方のシャベル状部分は上方および前方に面しかつ切断刃と柄の下方部分との間に延びる上部前表面を有し、かつ該表面は前記柄の下方部分へ後方および下方に収斂し、前記柄の前方縁部はその下方部分から上へ狭ばまり、かつ前記の中間平面において一般に垂直軸のまわりに比較的滑らかに丸くなっており、また柄の対向した縦の両側部の下方部分はおのおの前記シャベル状の下方部分の対向した両側縁部へ横へ外方および下方へ延びており、柄は前記プレート状要素の２重厚さの部分であり、また下方のシャベル状部分は前記プレート状要素の１重厚さの部分であり、前記２重厚さの部分の成分は概ね互いに接触しており、かつプレート状要素を柄の先導縁部に沿って折畳むことによって設けられるようにした収穫物刈取ナイフ」の記載、およびＦＩＧ．３乃至ＦＩＧ．６に図面の開示がある。   Regarding a conventional flare mower blade, Japanese Patent Publication No. 43-10290 (prior art 1) relates to a “harvest crop cutting knife” and “consists of plate-like elements having symmetrical shapes on both sides of a vertical intermediate plane. And a rear upright, relatively laterally narrow handle and a lower shovel-like part integral with the handle, the handle extending forward and downward and laterally outwardly to the shovel-like part Merging downwards, the handle has upstanding front and rear edges, an upper end, and opposing upstanding vertical sides, the lower shovel-like portion of the front edge of the handle A front-side cutting blade that is relatively wide, derived from the front, and both side edges converging backward and upward from both ends of the cutting blade to both sides of the lower part of the rear edge of the handle, Shovel-like part faces upward and forward and cut And an upper front surface extending between the lower portion of the handle and the surface converges rearward and downward to the lower portion of the handle, and the front edge of the handle narrows upward from the lower portion. And, in the intermediate plane, are generally rounded relatively smoothly around the vertical axis, and the lower parts of the opposite vertical sides of the handle are transverse to the opposite opposite edges of the shovel-like lower part, respectively. Extending outward and downward, the handle is a double-thickness portion of the plate-like element, and the lower shovel-like portion is a single-thickness portion of the plate-like element. The description of the “Crop Harvesting Knife”, wherein the components of the parts are generally in contact with each other and are provided by folding the plate-like elements along the leading edge of the handle, and FIG. 3 to FIG. 6 discloses the drawings.

また、実開昭５８−７３４２６号公報（従来技術２）には「取付板状部に続いて所定の長さの爪先部を折曲形成し、この爪先部を巾方向中間部から外側に向けて彎曲形成するとともにその巾方向の両側縁に刈取刃を形成したことを特徴とするフレールモア用の爪」の開示がある。従来技術２の刈取刃は、第１図に示されるように回転軸１の固定された２つの爪４が回転軸１の回転に従って回転し爪４の両側端に形成されている刈取刃１２によって草を刈り取る構造である。   Further, Japanese Utility Model Publication No. 58-73426 (Prior Art 2) states that “a toe portion having a predetermined length is bent after the mounting plate-like portion, and this toe portion is directed outward from the intermediate portion in the width direction. In addition, there is a disclosure of a "Flaremore claw" characterized in that a curl is formed and a cutting blade is formed on both side edges in the width direction. As shown in FIG. 1, the cutting blade of the prior art 2 is formed by cutting blades 12 formed on both ends of the claw 4 by rotating two claws 4 fixed to the rotating shaft 1 according to the rotation of the rotating shaft 1. It is a structure that cuts grass.

更に、実開平４−３５７１５号公報（従来技術３）は、「ハンマーナイフ」に関するもので「取付け部より先端に向かって 刃部を形成してなるハンマーナイフにおいて、刃部に沿った溝を形成し、前記溝断面は刃部方向へ徐々に深くなる部分を備えてなることを特徴とするハンマーナイフ」の記載がある。従来技術３の刈刃（ハンマーナイフ１）も第６図に図示されるように従来技術２と同じように回転軸１０６に取付ホルダ１０１を介して固定して回転軸１０６の回転に伴って回転し両端の刃で草を刈るものである。
特公昭４３−１０２９０号公報（従来技術１） 実開昭５８−７３４２６号公報（従来技術２） 実開平４−３５７１５号公報（従来技術３） Further, Japanese Utility Model Publication No. 4-35715 (Prior Art 3) relates to “hammer knives”, “in a hammer knife in which a blade portion is formed from the mounting portion toward the tip, a groove along the blade portion is formed. In addition, there is a description of a “hammer knife” in which the groove cross section includes a portion that gradually becomes deeper in the direction of the blade. As shown in FIG. 6, the cutting blade (hammer knife 1) of the prior art 3 is also fixed to the rotating shaft 106 via the mounting holder 101 in the same manner as the prior art 2 and rotates as the rotating shaft 106 rotates. The grass is cut with blades at both ends.
Japanese Patent Publication No. 43-10290 (prior art 1) Japanese Utility Model Publication No. 58-73426 (prior art 2) Japanese Utility Model Publication No. 4-35715 (Prior Art 3)

フレールモアの刈刃は、刈刃ホルダーに保持され回転軸の軸長手方向に複数、かつ円周方向に角度をずらせて複数設けられている。そして重量が比較的重い刈刃の場合、回転のバランスが取りにくく故障しやすい課題があった。また、それぞれの刈刃には、作業中常に回転軸の高速回転による遠心力が掛かっており、取付部材が壊れた場合、刈刃が遠心力によって飛散する場合があり被覆カバーがあっても危険性があった。   A plurality of flail mower cutting blades are provided in the axial direction of the rotating shaft and held in the cutting blade holder, and a plurality of the cutting blades are shifted in the circumferential direction. In the case of a cutting blade having a relatively heavy weight, there is a problem in that it is difficult to balance rotation and easily breaks down. Also, each cutting blade is always subjected to centrifugal force due to high-speed rotation of the rotating shaft during work, and if the mounting member is broken, the cutting blade may be scattered by centrifugal force, even if there is a cover cover. There was sex.

また、従来技術１乃至３のように回転軸に固定され回転に伴って回転する場合、圃場にある石などの強度のある固形物に当たった場合、回転力が強いため石等を強い力で跳ね飛ばしたり、逆に大きな障害物であると刈刃が破損しやすい課題があった。   Moreover, when it is fixed to the rotating shaft and rotates with rotation as in the prior arts 1 to 3, when it hits a solid object such as a stone in the field, the rotating force is strong, so the stone etc. is strong. There was a problem that the cutting blade was likely to be damaged if it jumped off or was a large obstacle.

更に、従来技術２や従来技術３のような左右に開いた「くの字状」の刈刃体を２つ背合わせにした刈刃であると刈り跡が平面的にならずにギザギザになりやすい課題があった。   Furthermore, if the cutting blades are made of two “bow-shaped” cutting blades that are open to the left and right as in the prior art 2 and the prior art 3, the cutting traces are not flat but jagged. There was an easy task.

上記課題を解決するため、ロータ軸に固定されてロータ軸の回転に伴い回転する刈刃ホルダーに回動自在に取付部材によって取り付けられているフレールモアの刈刃であって、
刈刃は、互いの接触面で接する２つの分割半部からなり、
２つの分割半部が、それぞれ接触面を対称軸面として左右対称な形状である一枚の板状体からなり、それぞれの板状体は、接触面部の下方部を接触面から反対側横方向および前方向へ順次それぞれ略９０度ずつ捻られてなる形状を有し、回転方向に向いた板状体先端辺を平面的な前刃として形成するとともに、
２つの分割半部のそれぞれは、取付部材によって刈刃ホルダーに自由回動可能に設けられることを特徴としたフレールモアの刈刃を提案する。 In order to solve the above-mentioned problem, a flare mower blade fixed by a mounting member to a cutting blade holder that is fixed to the rotor shaft and rotates with the rotation of the rotor shaft,
The cutting blade consists of two split halves that touch each other's contact surface,
The two divided halves are each composed of a single plate-like body having a symmetrical shape with the contact surface as the axis of symmetry, and each plate has a lower portion of the contact surface portion in the lateral direction opposite to the contact surface. And having a shape that is twisted approximately 90 degrees sequentially in the forward direction, and forming the plate-like body tip side facing the rotation direction as a flat front blade,
Each of the two divided halves proposes a flare mower blade characterized in that it can be freely pivoted on the blade holder by an attachment member.

更に、２つの分割半部が、互いの自重により接触面同士が常に接する方向に付勢されるように、それぞれの重心の位置が設けられた形状である０００９欄に記載のフレールモアの刈刃を提案する。   In addition, the flare mower blades described in the 0009 column are provided with positions of their respective centers of gravity so that the two split halves are urged in the direction in which the contact surfaces always contact each other due to their own weights. suggest.

更に又、２つの分割半部が、互いの接触面同士が接した状態であるとき、それぞれの前刃が連続する直線状刃を形成するとともに、前刃が位置する側の２つの接触面部の前側端辺が、下方に位置する前刃まで凸状の稜線部として連設された分割半部である０００９欄又は００１０欄に記載のフレールモアの刈刃を提案する。   Furthermore, when the two divided halves are in contact with each other, the front blades form a continuous straight blade and the two contact surface portions on the side where the front blade is located. The flare mower cutting blade described in the 0009 column or the 0010 column, which is a divided half portion in which the front side edge is continuously provided as a convex ridge line portion to the front blade positioned below, is proposed.

この発明によれば、１つの刈刃が、２つの分割半部からなりそれぞれ刈刃ホルダーに独立して自由回動可能に設けられているため、１つの分割半部の慣性力は小さく作業中に圃場等にある石や切り株などの障害物に当たった場合でも、従来の半分の衝撃ですみ故障が起こりにくく、石等の障害物の跳ね飛ばしや、破損した刈刃の飛散が減少する効果がある。特に請求項２のようにそれぞれの分割半部が板状体で形成されていると、分割半部の重量は比較的小さいため回転慣性力は小さくなる。   According to the present invention, since one cutting blade is composed of two divided halves and each is provided so as to be freely rotatable independently from the cutting blade holder, the inertia force of one divided half is small and the work is in progress. Even if it hits an obstacle such as a stone or stump in the field, the impact is less likely to occur due to the impact of half of the conventional, and the effect of reducing the jumping of the obstacle such as stone and the scattering of the broken cutting blade is reduced. There is. In particular, when each of the divided halves is formed of a plate-like body as in claim 2, the weight of the divided halves is relatively small so that the rotational inertia force is reduced.

また、従来技術２や従来技術３のような左右に開いた「くの字」状の刈刃体を２つ背合わせにした刈刃と異なり、回転方向に向いた板状体端部を平面的な前刃を有しているために刈り跡が平面状になりきれいになるとともに、刈り取られた草などの持ち回りが行われ、細かく破砕されやすい効果がある。更に、回転方向に向いた板状体端部を平面的な前刃形状としたため、刃先端部が摩耗しても丸くならず鋭角状態を保って摩耗する。そのため切断性能が低下することが無く切断性能が長期間維持される。   Also, unlike the cutting blades that have two “bow” -shaped cutting blades opened to the left and right as in the prior art 2 and the prior art 3, the plate-like body end facing the rotation direction is flat. Since it has a typical front blade, the cut trace becomes flat and clean, and the grass that has been cut is carried around, and it has the effect of being easily crushed finely. Furthermore, since the end of the plate-like body facing the rotation direction has a planar front blade shape, even if the blade tip is worn, it does not become round but wears while maintaining an acute angle state. Therefore, the cutting performance is maintained for a long time without lowering the cutting performance.

更に、請求項３に係る発明であると、それぞれの前刃が連続する直線状刃を形成するとともに前刃が位置する側の２つの接触面の前側端部が、下方に位置する前刃まで稜線部として連設されているため、従来技術１のように左右一体となった構造のものと比較すると稜線部が補強部材の役割となり耐久性や耐摩耗性が向上する。   Furthermore, in the invention according to claim 3, each front blade forms a continuous linear blade, and the front end portions of the two contact surfaces on the side where the front blade is located are located until the front blade located below. Since it is continuously provided as the ridge line portion, the ridge line portion serves as a reinforcing member, and durability and wear resistance are improved as compared with the structure of the left and right integrated structure as in the prior art 1.

この発明のフレールモアの刈刃の実施形態について図１乃至図１１に基づいて説明する。図１はこの発明の１つのフレールモアの刈刃の斜視図、図２は同じく正面図、図３は同じく左側面図、図４はこの発明の１つのフレールモアの刈刃を刈刃ホルダーに取付部材で取り付けた状態で分割半部が左右別々の作動を示す説明図、図５は、同じくこの発明の１つのフレールモアの刈刃を刈刃ホルダーに取付部材で取り付けた状態の断面背面図、図６は同じく下方から見た斜視図、図７は、この発明の１つのフレールモアの刈刃の作動状態を説明する説明図、図８はフレールモアの刈刃を設けたフレールモアをトラクタ側から見た斜視図、図９は同じく側面断面図、図１０は同じくフレールモアの一部切欠斜視図、図１１はフレールモアの動力伝達説明図である。   An embodiment of a flare mower blade according to the present invention will be described with reference to FIGS. 1 is a perspective view of one flare mower of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a left side view of the same, and FIG. FIG. 5 is a cross-sectional rear view of a state in which the cutting blade of one flail mower of the present invention is attached to the cutting blade holder with an attachment member, FIG. 7 is a perspective view seen from below, FIG. 7 is an explanatory view for explaining the operating state of one flare mower blade of the present invention, and FIG. 8 is a perspective view of the flare mower provided with the flare mower blade as seen from the tractor side. 9 is a side sectional view, FIG. 10 is a partially cutaway perspective view of the flare mower, and FIG. 11 is a power transmission explanatory diagram of the flare mower.

この発明の実施形態であるフレールモアの刈刃を取り付けるフレールモアについて図８乃至図１１を基にして説明する。フレールモアは、トラクタの後部に牽引され、トラクタの駆動力を入力軸５０、ギア５７、出力軸５１、駆動プーリ５２、Ｖベルト５３、従動プーリ５４を介してロータ軸４に回転力を伝動している。５５は、Ｖベルト５３へテンションを付与するテンションローラーであり、５６は、テンションローラ５５を支持するテンションアームである。   A flare mower to which a flare mower blade according to an embodiment of the present invention is attached will be described with reference to FIGS. The flare mower is pulled by the rear part of the tractor, and the driving force of the tractor is transmitted to the rotor shaft 4 via the input shaft 50, the gear 57, the output shaft 51, the driving pulley 52, the V belt 53, and the driven pulley 54. Yes. A tension roller 55 applies tension to the V-belt 53, and a tension arm 56 supports the tension roller 55.

フレールモアは、ロータ軸４の前後の上部を被覆するようにフロントガード６０、リアガード６１を設けており、左右のサイドカバー６２にスタンド６３を設けている。６４はハンドル、６５はゲージ輪でありそれぞれ機枠６６に連結していて、ハンドル６４を回転させてゲージ輪６５を上下させて刈り高さを調節する。   The flare mower is provided with a front guard 60 and a rear guard 61 so as to cover the front and rear upper portions of the rotor shaft 4, and a stand 63 is provided on the left and right side covers 62. Reference numeral 64 denotes a handle, and 65 denotes a gauge wheel, which are respectively connected to the machine frame 66. The handle 64 is rotated to move the gauge wheel 65 up and down to adjust the cutting height.

ロータ軸４には、刈刃ホルダー２が軸長手方向に複数、かつ円周方向に角度をずらせて固定して設けられている。刈刃ホルダー２は、この実施例では円周方向では９０度角ずつずらせて軸長手方向に４列設けられている。   The rotor shaft 4 is provided with a plurality of cutting blade holders 2 fixed in the longitudinal direction of the shaft and offset in the circumferential direction. In this embodiment, the cutting blade holders 2 are provided in four rows in the longitudinal direction of the shaft by shifting by 90 degrees in the circumferential direction.

それぞれの刈刃ホルダー２は、ロータ軸４の回転方向とは逆の方向と外方向を開口部２１として開いた溝形状であり、互いに対向する対向部を有している。対向部には、取付部材である取付ボルト３が貫通可能なホルダー部取付部材貫通孔を有し、取付ボルト３によりそれぞれ刈刃１が取り付けられている。   Each cutting blade holder 2 has a groove shape having openings 21 in the direction opposite to the rotation direction of the rotor shaft 4 and the outer direction, and has opposed portions facing each other. The opposing part has a holder part attachment member through-hole through which an attachment bolt 3 as an attachment member can be passed, and the cutting blade 1 is attached to each by the attachment bolt 3.

次に図１乃至図７に基づいてこの発明の実施形態であるフレールモアの刈刃１について説明する。刈刃１は、正面図である図２に示すように接触面１１を中心に左右に分割された２つの分割半部１０、１０からなる。２つの分割半部１０、１０は、それぞれ取付部材である取付ボルト３によって刈刃ホルダー２に自由回動可能に設けられるとともに、接触面部１１、１１の接触面１１０、１１０によって互いに接触している。   Next, a flare mower blade 1 according to an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 2 which is a front view, the cutting blade 1 includes two divided halves 10 and 10 which are divided into left and right with a contact surface 11 as a center. The two divided halves 10 and 10 are provided on the cutting blade holder 2 so as to be freely rotatable by attachment bolts 3 which are attachment members, respectively, and are in contact with each other by the contact surfaces 110 and 110 of the contact surface portions 11 and 11. .

２つの分割半部１０、１０は、それぞれ接触面部１１の接触面１１０を対称軸面として左右対称な形状である一枚の板状体からなる。それぞれの板状体は、接触面部１１の下方部１２を接触面１１０の反対側横方向および前方向へ順次それぞれ略９０度ずつ捻られてなる形状を有し、回転方向に向いた板状体先端辺を平面的な前刃１４として形成する。２つの分割半部１０、１０は、それぞれ接触面部１１の上端近傍に取付部材貫通孔１３を設けており、それぞれの取付部材貫通孔１３を貫通する取付ボルト３によって刈刃ホルダー２に取り付けられている。   The two divided halves 10 and 10 are each composed of a single plate-like body having a symmetrical shape with the contact surface 110 of the contact surface portion 11 as the axis of symmetry. Each plate-like body has a shape in which the lower portion 12 of the contact surface portion 11 is twisted by about 90 degrees in the lateral direction and the front direction opposite to the contact surface 110, respectively, and is directed to the rotation direction. The tip side is formed as a planar front blade 14. The two divided halves 10 and 10 are each provided with a mounting member through hole 13 in the vicinity of the upper end of the contact surface portion 11, and are attached to the cutting blade holder 2 by mounting bolts 3 passing through the respective mounting member through holes 13. Yes.

２つの分割半部１０、１０は、それぞれの重心の位置を互いの接触面１１０同士が接するように付勢される位置に設けられている。   The two divided halves 10 and 10 are provided at positions where the respective gravity centers are urged so that the contact surfaces 110 are in contact with each other.

２つの分割半部１０、１０は、互いの接触面１１０、１１０同士が接した状態であるとき、それぞれの前刃１４が連続する直線状刃を形成するとともに、前刃１４が位置する側の２つの接触面部１１、１１の前側端辺が、下方に位置する前刃まで凸状の稜線部１５として連設されている。   When the two split halves 10 and 10 are in a state in which the contact surfaces 110 and 110 are in contact with each other, each of the front blades 14 forms a continuous straight blade, and the side on which the front blade 14 is located. The front side edges of the two contact surface portions 11, 11 are continuously provided as convex ridge line portions 15 up to the front edge located below.

刈刃１は上述した構成を有し、ロータ軸４の回転による刈刃ホルダー２の回転に従って図７に示すように前刃１４方向へ回転するが、取付ボルト３を中心に回動可能である。したがって刈刃１のどちらかの分割半部１０に圃場に落ちている石等の障害物が衝突した場合は、図４に示すように一方の分割半部１０のみが後方に弾かれる作動を行う。また刈刃１が摩耗しても図７の２点鎖線で示されるように摩耗していくため前刃１４先端部の鋭角が保たれ切断性能が低下しない。   The cutting blade 1 has the above-described configuration, and rotates in the direction of the front blade 14 as shown in FIG. 7 according to the rotation of the cutting blade holder 2 by the rotation of the rotor shaft 4, but can rotate around the mounting bolt 3. . Therefore, when an obstacle such as a stone falling on the field collides with one of the divided halves 10 of the cutting blade 1, only one of the divided halves 10 is flipped backward as shown in FIG. . Further, even if the cutting blade 1 is worn, it is worn as shown by a two-dot chain line in FIG. 7, so that the acute angle of the front end portion of the front blade 14 is maintained and the cutting performance is not deteriorated.

この発明は、フレールモアの刈刃として利用する。   The present invention is used as a flare mower cutting blade.

この発明の１つ実施形態を示すフレールモアの刈刃の斜視図A perspective view of a flare mower blade showing one embodiment of the present invention 同じくフレールモアの刈刃の正面図Front view of the flare mower blade 同じくフレールモアの刈刃の左側面図Similarly left side view of flare mower blade この発明の１つのフレールモアの刈刃を刈刃ホルダーに取付部材で取り付けた状態で分割半部が左右別々の作動を示す説明図Explanatory drawing which shows the operation | movement by which a division | segmentation half part separates right and left in the state which attached the cutting blade of one flail mower of this invention to the cutting blade holder with the attachment member 同じくこの発明の１つのフレールモアの刈刃を刈刃ホルダーに取付部材で取り付けた状態の断面背面図Similarly, a cross-sectional rear view of a state in which a flare mower blade of the present invention is attached to a blade holder with an attachment member 同じく下方から見た斜視図Similarly perspective view from below この発明の１つのフレールモアの刈刃の作動状態を説明する説明図Explanatory drawing explaining the operating state of the cutting blade of one flail mower of this invention この発明のフレールモアの刈刃を設けたフレールモアをトラクタ側から見た斜視図The perspective view which looked at the flare mower provided with the flare mower of this invention from the tractor side 同じく側面断面図Same side sectional view 同じくフレールモアの一部切欠斜視図Similarly, partially cutaway perspective view of Flairmore 同じくフレールモアの動力伝達説明図Similarly, power transmission explanatory diagram of Flairmore

符号の説明Explanation of symbols

１ 刈刃
１０ 分割半部
１１ 接触面部
１１０ 接触面
１２ 接触面裏側下方部
１３ 取付部材貫通孔
１４ 前刃
１５ 稜線部
２ 刈刃ホルダー
３ 取付ボルト（取付部材）
４ ロータ軸
５０ 入力軸
５１ 出力軸
５２ 駆動プーリ
５３ Ｖベルト
５４ 従動プーリ
５５ テンションローラー
５６ テンションアーム
５７ ギア
６０ フロントガード
６１ リアガード
６２ サイドカバー
６３ スタンド
６４ ハンドル
６５ ゲージ輪
６６ 機枠 1 Cutting blade 10 Divided half part 11 Contact surface part
DESCRIPTION OF SYMBOLS 110 Contact surface 12 Contact surface back side lower part 13 Attachment member through-hole 14 Front blade 15 Ridge line part 2 Cutting blade holder 3 Attachment bolt (attachment member)
4 Rotor shaft 50 Input shaft 51 Output shaft 52 Drive pulley 53 V belt 54 Driven pulley 55 Tension roller 56 Tension arm 57 Gear 60 Front guard 61 Rear guard 62 Side cover 63 Stand 64 Handle 65 Gauge wheel 66 Machine frame

Claims (3)

ロータ軸に固定されてロータ軸の回転に伴い回転する刈刃ホルダーに回動自在に取付部材によって取り付けられているフレールモアの刈刃であって、
刈刃は、互いの接触面で接する２つの分割半部からなり、
２つの分割半部が、それぞれ接触面を対称軸面として左右対称な形状である一枚の板状体からなり、それぞれの板状体は、接触面部の下方部を接触面から反対側横方向および前方向へ順次それぞれ略９０度ずつ捻られてなる形状を有し、回転方向に向いた板状体先端辺を平面的な前刃として形成するとともに、
２つの分割半部のそれぞれは、取付部材によって刈刃ホルダーに自由回動可能に設けられることを特徴としたフレールモアの刈刃。 A flare mower blade fixed by a mounting member to a cutting blade holder that is fixed to the rotor shaft and rotates with rotation of the rotor shaft,
The cutting blade consists of two split halves that touch each other's contact surface,
The two divided halves are each composed of a single plate-like body having a symmetrical shape with the contact surface as the axis of symmetry, and each plate has a lower portion of the contact surface portion in the lateral direction opposite to the contact surface. And having a shape that is twisted approximately 90 degrees sequentially in the forward direction, and forming the plate-like body tip side facing the rotation direction as a flat front blade,
Each of the two divided halves is provided with a cutting blade holder by a mounting member so as to be freely rotatable. ２つの分割半部が、互いの自重により接触面同士が常に接する方向に付勢されるように、それぞれの重心の位置が設けられた形状である請求項１に記載のフレールモアの刈刃。   The flare mower blade according to claim 1, wherein the two split halves have a shape in which the positions of their respective centers of gravity are provided so that the contact surfaces are always urged by their own weights. ２つの分割半部が、互いの接触面同士が接した状態であるとき、それぞれの前刃が連続する直線状刃を形成するとともに、前刃が位置する側の２つの接触面部の前側端辺が、下方に位置する前刃まで凸状の稜線部として連設された分割半部である請求項１又は請求項２に記載のフレールモアの刈刃。   When the two divided halves are in contact with each other, the front edges of the two contact surface portions on the side where the front blades are located, while the front blades form a continuous straight blade The flare mower cutting blade according to claim 1 or 2, which is a divided half portion continuously provided as a convex ridge line portion to a front blade positioned below.

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