JP2001095342A - Weed and tree trimmer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trimmer capable of traveling in a traverse direction to grip and trim weeds and trees, and inhibiting the scattering of dangerous objects with its rotary blade. SOLUTION: This weed and tree trimmer is equipped with a power-driven rotary blade unit and an outer cylindrical cover for covering an outer periphery of the blade rotation orbit of the blade unit, wherein the skirt of the cylindrical cover is partially or totally fabricated with a comb-like member having notches for receiving and gripping the weeds and trees. The comb-like member preferably comprises a comb-shaped guard which has comb teeth extending from an upper part of the rotary blade to the periphery in the radial direction of the rotary blade and bending downward at their top ends, and which is formed to have notches extending from the periphery to the center in the radial direction between the comb teeth. The comb-like member further preferably comprises another type of the comb-shaped guard which has notches vertically extending upward from bottom of the cylinder cover between the vertically arranged comb teeth. The comb-like member is furthermore preferably so formed as to protrude to the outside of the cylindrical cover.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の利用分野】本発明は、動力回転刃を使用する草
木伐採装置に関し、特に、回転刃の回転軌道周囲に危険
物の飛散を防止するための保護カバーを設けた草木伐採
装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tree cutting device using a power rotary blade, and more particularly, to a tree cutting device provided with a protective cover around a rotary orbit of the rotary blade to prevent scattering of dangerous substances.

【０００２】[0002]

【発明が解決しようとする課題】山野の下草刈りなどに
使用される動力草刈り装置は、一般に、油圧ショベルな
どの土工機械のアームに連結されるフレームに、油圧モ
ータなどの動力で回転する回転軸を取付け、この回転軸
に草刈刃を固定してある。A power mowing device used for mowing undergrowth in a mountain field or the like generally has a rotary shaft which is rotated by power of a hydraulic motor or the like on a frame connected to an arm of an earth moving machine such as a hydraulic shovel. And the mowing blade is fixed to this rotating shaft.

【０００３】この種の伐採装置は、刈り取り刃が高速回
転するため、刈取った木片をはじめ、岩石、土砂あるい
は地面に捨ててある瓶や缶などを周囲に飛散させ非常に
危険である。これを防止するために回転刃の軌道外側を
円筒状のガードで覆い、草木の上方からかぶせるように
して草木を先端から徐々に刈取ってゆく装置が開発さて
いる。[0003] In this type of cutting device, the cutting blade rotates at a high speed, and therefore, it is extremely dangerous that scattered wood chips, rocks, earth and sand, bottles and cans discarded on the ground, and the like are scattered around. To prevent this, a device has been developed that covers the outside of the orbit of the rotary blade with a cylindrical guard and covers the plant from above so that the plant can be gradually cut from the tip.

【０００４】このように、伐採機の回転刃の軌道外側を
外筒カバーで覆い、草木の上方からかぶせるようにして
上から順に刈取ってゆく形式の草刈機は異物の飛散によ
る事故を防止でき、草木を細かに粉砕できるという利点
があるが、地面に沿って移動させながら刈取ることがで
きない。草木の背丈が低いところでは伐採機を地面に沿
って横方向へ移動しながら刈取ることが効率的である場
合があるので、この改善が求められていた。[0004] As described above, the mowing machine of the type in which the outer surface of the orbit of the rotary blade of the logging machine is covered with the outer cylinder cover, and the grass is cut from the top so as to cover it from above can prevent an accident due to scattering of foreign matter. There is an advantage that the vegetation can be finely crushed, but it cannot be cut while moving along the ground. This improvement has been sought because it may be more efficient to move the logging machine laterally along the ground in places where the height of the vegetation is short.

【０００５】他方、側面にカバーを設けていない伐採機
は横方向へ水平移動させながら刈取ることができるけれ
ども、草木を支えるものがないので刃の回転で草を倒し
てしまい根元できれいに刈取ることができないという不
都合があった。[0005] On the other hand, a logging machine without a cover on the side can cut while moving horizontally in the horizontal direction. There was an inconvenience that I could not do it.

【０００６】従って、本発明の目的は、地面に沿って移
動させながら草木を刈取ることができるとともに、横移
動の際に草木の根元を把持して刈取り、さらに、回転刃
による危険物の飛散を防止することができる草木伐採装
置を提供することにある。Accordingly, it is an object of the present invention to cut grass while moving along the ground, grasp the root of the grass during lateral movement, and furthermore, scattering of dangerous substances by the rotary blade. It is an object of the present invention to provide a plant cutting device that can prevent the occurrence of vegetation.

【０００７】[0007]

【課題を解決するための手段】上記第１の目的を達成す
るために、本発明は、動力で駆動する回転刃ユニットを
具備し、回転刃ユニットの刃の軌道外周に、危険物の飛
散を防止するための外筒カバーを設けた草木伐採装置に
おいて、前記外筒カバーの下部周囲の一部又は全部を、
草木を受け入れて支持する多数の切り込みを備えた櫛歯
部材に形成したことを特徴とする。In order to achieve the first object, the present invention comprises a rotary blade unit driven by power, and scatters dangerous substances on the outer circumference of the orbit of the blade of the rotary blade unit. In a plant felling device provided with an outer cylinder cover for preventing, a part or all around the lower part of the outer cylinder cover,
It is characterized in that it is formed in a comb-shaped member provided with a number of cuts for receiving and supporting plants.

【０００８】好ましくは、櫛歯部材は、回転刃ユニット
の刃の上方から半径方向外側へ延び先端側を下方に向け
て屈曲又は彎曲させた櫛歯を有し、櫛歯間に半径内側方
向に延びる切り込みを形成した櫛歯ガードで構成する。Preferably, the comb tooth member has comb teeth extending radially outward from above the blade of the rotary blade unit and bent or curved with the tip side downward, and radially inward between the comb teeth. It is composed of a comb guard with an extended cut.

【０００９】また、櫛歯部材は、上下方向の櫛歯間に外
筒カバー下縁から上方に向けて延びる切り込みを備えた
櫛歯ガードで構成してもよい。Further, the comb-tooth member may be constituted by a comb-tooth guard provided with a notch extending upward from the lower edge of the outer cylinder cover between the comb teeth in the vertical direction.

【００１０】さらに、櫛歯部材は外筒カバーの外側に張
り出させてもよい。[0010] Further, the comb teeth member may be protruded outside the outer cylinder cover.

【００１１】[0011]

【発明の実施の形態】以下、本発明の実施形態を添付の
図面に基づいて説明する。図の実施例の草木伐採装置１
は、パワーショベルなどの土工機械本体のアタッチメン
トとして使用するもので、土工機械本体のアームや作動
リンクを連結するためのステイ２を固設したフレーム３
に、油圧モータ４などの駆動装置の回転軸５と回転伝達
手段６によって回転する回転刃ユニット７が設けられて
いる。Embodiments of the present invention will be described below with reference to the accompanying drawings. Vegetation felling device 1 of the embodiment shown in FIG.
Is used as an attachment for an earthmoving machine body such as a power shovel, and a frame 3 on which a stay 2 for connecting an arm or an operation link of the earthmoving machine body is fixed.
In addition, a rotary blade unit 7 that is rotated by a rotary shaft 5 of a driving device such as a hydraulic motor 4 and a rotation transmitting unit 6 is provided.

【００１２】また、図の実施例の伐採装置１は、図１に
示すように、油圧モータ４によって回転する回転軸５に
支持ケース８を制動機構９を介して回転可能に係合する
とともに、複数の刃１０を固定した２個の回転刃ユニッ
ト７の軸１１を従動回転軸として前記支持ケース８の左
右に回転自在に軸着し、前記回転軸５と回転刃ユニット
７の軸１１をベルト、ギヤなどの回転伝達手段６で連繋
させ、これにより、回転軸５の回転により回転刃ユニッ
ト７の軸１１を回転させて草木を刈取るとともに、回転
刃ユニット７の回転抵抗により、支持ケース８が制動機
構９の摩擦に抗して回転し、回転刃ユニット７が回転軸
５の囲りを回動するようになっている。すなわち、図の
実施例の回転刃ユニット７は、共通の油圧モータ４で、
高速で自転しながら回転軸５に対して公転するようにな
っている。Further, as shown in FIG. 1, the logging device 1 of the embodiment shown in FIG. 1 rotatably engages a support case 8 with a rotating shaft 5 rotated by a hydraulic motor 4 via a braking mechanism 9. The shafts 11 of the two rotary blade units 7 to which the plurality of blades 10 are fixed are rotatably mounted on the left and right sides of the support case 8 as driven rotation axes, and the rotary shaft 5 and the shaft 11 of the rotary blade unit 7 are belted. The rotation of the rotary shaft 5 rotates the shaft 11 of the rotary blade unit 7 to cut the vegetation, and the rotation resistance of the rotary blade unit 7 causes the support case 8 to rotate. Rotates against the friction of the braking mechanism 9, and the rotary blade unit 7 rotates around the rotary shaft 5. That is, the rotary blade unit 7 in the illustrated embodiment is a common hydraulic motor 4,
It revolves around the rotating shaft 5 while rotating at high speed.

【００１３】これらの伐採装置は回転刃ユニット７が高
速で回転するため、側面周囲が開放していると、岩石な
どが周囲に飛び散り危険である。このため、伐採装置１
の側面周囲、すなわち、回転刃ユニット７の刃１０の回
動軌道外側（図の実施例では回転刃ユニット７の公転軌
道外側）に側面周囲を覆う外筒カバー１２を設け、飛散
物がこの外筒カバー１２に当って伐採装置１の外部に飛
び出さないようにしてある。In these cutting devices, since the rotary blade unit 7 rotates at a high speed, if the periphery of the side surface is open, rocks and the like are liable to scatter around. For this reason, logging equipment 1
Is provided around the side surface of the rotary blade unit 7, that is, outside the revolving orbit of the blade 10 of the rotary blade unit 7 (in the illustrated embodiment, outside the revolving orbit of the rotary blade unit 7). It does not hit the cylinder cover 12 and jump out of the logging device 1.

【００１４】ところが、外筒カバー１２の全周が板状の
部材で構成されている場合は、伐採装置１を地面に沿っ
て移動しながら刈取ろうとすると外筒カバー１２が邪魔
になり、あるいは外筒カバー１２で草を倒してしまい刈
取りができなくなる。そこで、本発明の伐採装置１は、
側面外周を囲む外筒カバー１２の下縁周りの一部又は全
部を、草木を受け入れる多数の切込み１３を形成した櫛
歯部材１４で構成し、図１のように、伐採装置１を横移
動したときに、草木２０がこの切込み１３を介して櫛歯
部材１４の内側に取り込み、これにより、伐採装置１を
地面に沿って横移動しながら、両側の櫛歯間で草木２０
を掴むようにして刈取ることができるようにしたもので
ある。However, when the entire circumference of the outer cylinder cover 12 is formed of a plate-like member, the outer cylinder cover 12 becomes obstructive if the cutting device 1 is moved along the ground and cuts. The grass is knocked down by the tube cover 12 so that cutting cannot be performed. Therefore, the logging device 1 of the present invention
A part or the whole of the lower edge of the outer cylinder cover 12 surrounding the outer periphery of the side surface is constituted by a comb-shaped member 14 formed with a number of cuts 13 for receiving plants, and the logging device 1 is laterally moved as shown in FIG. Occasionally, the vegetation 20 is taken inside the comb member 14 through the cut 13, whereby the vegetation 20 is moved between the comb teeth on both sides while the cutting device 1 is moved laterally along the ground.
It is a thing which can be reaped by grasping.

【００１５】図１、図２の実施例の櫛歯部材１４は、外
筒カバー１２の内側の枠体１５に結合する取付縁１６か
ら半径外側方向へ傾斜して延び、先端側を下向に向けて
湾曲させた多数の櫛歯１７を有し、櫛歯１７、１７間
に、下縁から取付縁１６まで延びる切込み１３が形成さ
れ、櫛歯１７が危険物の飛散を防止する保護ガードを構
成している。The comb member 14 of the embodiment shown in FIGS. 1 and 2 extends inclining radially outward from a mounting edge 16 connected to the frame 15 inside the outer cylinder cover 12, with the tip side facing downward. It has a plurality of comb teeth 17 curved toward each other, and a cut 13 extending from the lower edge to the mounting edge 16 is formed between the comb teeth 17, 17, and the comb teeth 17 form a protective guard for preventing scattering of dangerous materials. Make up.

【００１６】従って、この実施例の櫛歯部材１４の切込
み１３は櫛歯部材１４の側面の内側へ入り込んでいる。
このため、伐採装置１を地面に沿って横移動すると草木
はこの切込み１３によって立ったまま櫛歯部材１４の内
側、すなわち、伐採装置１の内部に入り込み、両側の櫛
歯１７の前記下向傾斜部に把持された状態で回転刃ユニ
ット７によって刈取られる。Accordingly, the cut 13 of the comb tooth member 14 of this embodiment enters inside the side surface of the comb tooth member 14.
For this reason, when the logging device 1 is moved laterally along the ground, the vegetation enters the inside of the comb-tooth member 14, that is, the interior of the logging device 1, while standing by the cut 13, and the downward inclination of the comb teeth 17 on both sides. The blade is cut by the rotary blade unit 7 in a state of being gripped by the part.

【００１７】図３実施例の櫛歯部材１４は、取付片を有
する板面にこの板面の下端から上方に延びる多数の切込
み１３を板面の長手方向に沿って間欠的に形成し、切込
み１３、１３間に櫛歯１７を形成した構成になってい
る。この構成により伐採装置１を地面に沿って横移動す
ると草木の根元部分が切込み１３を通して櫛歯部材１４
の内側に入り込む。この切込み１３は上方へ垂直に延び
ているため草木は切込み１３の最深端で倒されるが、こ
の切込み１３は適宜の長さを保持しているので草木の根
元部は櫛歯部材１４の内側に入っており、切込み１３の
両側の櫛歯１７に支えられた状態で回転刃ユニット７に
よって伐採される。The comb tooth member 14 of the embodiment shown in FIG. 3 has a plurality of cuts 13 extending upward from the lower end of the plate surface intermittently along the longitudinal direction of the plate surface. The configuration is such that comb teeth 17 are formed between 13 and 13. With this configuration, when the logging device 1 is moved laterally along the ground, the root portion of the vegetation is cut through the cut 13 to form a comb-shaped member 14.
Get inside. Since the cut 13 extends vertically upward, the plants are fallen at the deepest end of the cut 13. However, since the cut 13 has an appropriate length, the root of the plant is placed inside the comb tooth member 14. It is cut by the rotary blade unit 7 while being supported by the comb teeth 17 on both sides of the cut 13.

【００１８】図４実施例の櫛歯部材１４は、前記図３の
前記櫛歯部材１４の周方向に横補強プレート１８を一体
に設けるとともに、各櫛歯１７の外側長手方向に固定し
た補強リブ１９を前記横補強リブ１８に結合して強度を
高めている。The comb tooth member 14 of the embodiment shown in FIG. 4 has a transverse reinforcing plate 18 integrally provided in the circumferential direction of the comb tooth member 14 of FIG. 19 is connected to the lateral reinforcing ribs 18 to increase the strength.

【００１９】図５の実施例は、櫛歯部材１４を外筒カバ
ー１２の外側横方向へ向けて張り出させたものであり、
前記実施例と同様に、伐採装置１の横移動の際に草木が
横方向に張り出した櫛歯１７間に把持された状態で伐採
される。この実施例では櫛歯部材１４の下方に開口部が
形成されるが、櫛歯１７間の切込み１３によって草木が
把持されるので開口部を遮蔽する壁となり、回転刃によ
る危険物の飛散が防止される。In the embodiment shown in FIG. 5, the comb teeth member 14 is extended laterally outside the outer cylinder cover 12.
As in the case of the above-described embodiment, the vegetation is cut in a state where the vegetation is held between the comb teeth 17 projecting in the horizontal direction when the cutting device 1 is moved laterally. In this embodiment, an opening is formed below the comb teeth member 14, but the cut 13 between the comb teeth 17 grips the vegetation, so that it serves as a wall that shields the opening and prevents the rotating blade from scattering dangerous substances. Is done.

【００２０】図３、図４及び図５の実施例の櫛歯１７
は、伐採装置１の外筒カバー１２の下部縁辺から切込み
１３を形成して製作してもよいが、図のように取付縁を
設けて外筒カバー１２に形成した切欠き部に脱着する構
造にしてもよい。The comb teeth 17 of the embodiment of FIGS.
May be manufactured by forming a cut 13 from the lower edge of the outer cylinder cover 12 of the logging device 1, but a structure in which a mounting edge is provided as shown in the figure to be attached to and detached from a notch formed in the outer cylinder cover 12. It may be.

【００２１】いずれの実施例も、櫛歯部材１４は伐採装
置１の側面全周にわたって設けてもよいが、伐採装置１
の横移動は左右への移動が多いので、例えば、角度１２
０°の範囲で左右の一方又は双方に櫛歯部材１４を設け
てもよい。また、左右の一方のみに設ける場合はパワー
ショベルのオペレータ室から見易い側に設ける。In any of the embodiments, the comb teeth member 14 may be provided over the entire side surface of the logging device 1.
Since the lateral movement of often moves left and right, for example,
The comb teeth member 14 may be provided on one or both of the right and left sides within a range of 0 °. When the power shovel is provided on only one of the left and right sides, the power shovel is provided on the side that is easy to see from the operator room.

【００２２】櫛歯部材１４の櫛歯１７は、いずれも、丸
棒、角棒、テーパ棒、平鋼、切り出し板等の鋼材を成形
溶接して製作することができる。製作の容易性からは平
板切り出しが有利である。また、櫛歯１７間の切り込み
１３は、伐採装置の旋回方向に対して草木が入り易い角
度に傾けて設けるようにしてもよい。Each of the comb teeth 17 of the comb tooth member 14 can be manufactured by forming and welding a steel material such as a round bar, a square bar, a tapered bar, a flat steel plate, a cutout plate, or the like. From the ease of manufacture, flat plate cutting is advantageous. In addition, the cut 13 between the comb teeth 17 may be provided to be inclined at an angle at which plants can easily enter with respect to the turning direction of the logging device.

【００２３】図の実施例は、いずれも回転駆動軸に対し
て公転する一対の回転刃ユニットで草木を刈取る伐採装
置を例示して説明したが、本発明はこれに限定されるも
のではなく、回転駆動軸に円形の鋸刃カッタを取り付け
た草刈り機藤にも広く応用されるものである。In the embodiment shown in the drawings, a logging device for cutting a plant with a pair of rotary blade units revolving around a rotary drive shaft has been described as an example, but the present invention is not limited to this. It is also widely applied to a mower wister having a circular saw blade cutter attached to a rotary drive shaft.

【００２４】[0024]

【効果】本発明の伐採装置は、外筒カバーの一部又は全
部が切り込み間欠部を有する櫛歯部材で構成されている
ので、伐採装置を地面に沿って横移動しながら刈取るこ
とができるとともに、この切り込み間欠部で草木を掴む
ようにして刈取るので根元からきれいに伐採することが
できる。According to the logging device of the present invention, the outer cylinder cover is partially or entirely formed of a comb-shaped member having an intermittent cut, so that the cutting device can be cut while moving laterally along the ground. At the same time, the vegetation is harvested at the intermittent cut so that the vegetation is grasped, so that the root can be neatly cut.

【００２５】櫛歯部材の切込み間欠部に把持された草木
が縦方向の壁になるので回転刃による危険物の飛散が防
止される。Since the vegetation gripped by the intermittent cuts of the comb-tooth member forms a vertical wall, scattering of dangerous substances by the rotary blade is prevented.

【００２６】櫛刃部材の櫛刃を下方に向けることによ
り、危険物の飛散防止は一層確実になる。By turning the comb blade of the comb blade member downward, scattering of dangerous substances can be more reliably prevented.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の実施例による草木伐採装置の内部を示
す縦断面図FIG. 1 is a longitudinal sectional view showing the inside of a tree cutting device according to an embodiment of the present invention.

【図２】本発明の第１実施例を示す草木伐採装置の斜視
図FIG. 2 is a perspective view of a tree cutting device showing a first embodiment of the present invention.

【図３】本発明の第２実施例による草木伐採装置の斜視
図FIG. 3 is a perspective view of a tree cutting device according to a second embodiment of the present invention;

【図４】本発明の第３実施例による草木伐採装置の斜視
図FIG. 4 is a perspective view of a tree cutting device according to a third embodiment of the present invention;

【図５】本発明の第４実施例による草木伐採装置の斜視
図FIG. 5 is a perspective view of a tree cutting device according to a fourth embodiment of the present invention;

【符号の説明】[Explanation of symbols]

１…草木伐採装置 ２…ステイ ３…フレーム ４…油圧モータ ５…回転軸 ６…回転伝達手段 ７…回転刃ユニット ８…支持ケース ９…制動機構 １０…刃 １１…軸 １２…外筒カバー １３…切込み １４…櫛歯部材 １５…枠体 １６…取付縁 １７…櫛歯 １８…補強プレート １９…補強リブ DESCRIPTION OF SYMBOLS 1 ... Tree cutting device 2 ... Stay 3 ... Frame 4 ... Hydraulic motor 5 ... Rotary shaft 6 ... Rotation transmission means 7 ... Rotary blade unit 8 ... Support case 9 ... Braking mechanism 10 ... Blade 11 ... Shaft 12 ... Outer cylinder cover 13 ... Notch 14 ... Comb tooth member 15 ... Frame 16 ... Mounting edge 17 ... Comb tooth 18 ... Reinforcement plate 19 ... Reinforcement rib

【整理番号】ＰＡＳ９９０１９[Reference number] PAS99019

Claims (4)

【特許請求の範囲】[Claims] 【請求項１】動力で駆動する回転刃ユニットを具備し、
回転刃ユニットの刃の軌道外周に、危険物の飛散を防止
するための外筒カバーを設けた草木伐採装置において、
前記外筒カバーの下部周囲の一部又は全部を、草木を受
け入れて支持する多数の切り込みを備えた櫛歯部材に形
成したことを特徴とする草木伐採装置A rotary blade unit driven by power;
In a tree cutting device provided with an outer cylinder cover on the outer periphery of the orbit of the blade of the rotary blade unit to prevent scattering of dangerous substances,
A plant felling device characterized in that a part or all of a periphery of a lower portion of the outer cylinder cover is formed as a comb-shaped member having a plurality of cuts for receiving and supporting plants. 【請求項２】櫛歯部材が、回転刃ユニットの刃の上方か
ら半径方向外側へ延び先端側を下方に向けて屈曲させた
櫛歯を有し、櫛歯間に半径内側方向に延びる切り込みを
形成した櫛歯ガードであることを特徴とする請求項１記
載の草木伐採装置2. A comb tooth member having a comb tooth extending radially outward from above the blade of the rotary blade unit and having a tip side bent downward, and a cut extending radially inward between the comb teeth. The plant felling device according to claim 1, wherein the comb guard is formed. 【請求項３】櫛歯部材が、上下方向の櫛歯間に外筒カバ
ー下縁から上方に向けて延びる切り込みを備えた櫛歯ガ
ードであることを特徴とする請求項１記載の草木伐採装
置3. The plant felling device according to claim 1, wherein the comb-tooth member is a comb guard provided with a notch extending upward from a lower edge of the outer cylinder cover between the vertical comb teeth. 【請求項４】櫛歯部材を外筒カバーの外側に張り出させ
たことを特徴とする請求項１記載の草木伐採装置4. The plant felling device according to claim 1, wherein the comb teeth member is extended outside the outer cylinder cover.