JP2009171947A - Tree felling machine - Google Patents

Tree felling machine Download PDF

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JP2009171947A
JP2009171947A JP2008076154A JP2008076154A JP2009171947A JP 2009171947 A JP2009171947 A JP 2009171947A JP 2008076154 A JP2008076154 A JP 2008076154A JP 2008076154 A JP2008076154 A JP 2008076154A JP 2009171947 A JP2009171947 A JP 2009171947A
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saw blade
reciprocating
rotary
slide member
blade
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Yoshiyuki Fujii
芳行 藤井
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tree felling machine enabling a worker to easily and safely perform tree felling work in a stable posture. <P>SOLUTION: In this tree felling machine, a reduction reciprocating motion device 3 which has a reducing gear mechanism and a rotary reciprocating motion-changing mechanism is arranged below a rotary blade 1 which is attached to a rotating shaft (A) of the lower end of a grass cutter body K, and a one-edged or two-edged band plate-like saw blade 2 is forward horizontally projected from the reduction reciprocating motion device 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、伐採機に関する。   The present invention relates to a felling machine.

従来、竹や木を伐採するには、特許文献１記載のようなチェーンソーや電動鋸等を用いていた。また、草や細い木等は、特許文献２記載のような刈払機で切断していた。また、作業者が、鋸等を持って手動で伐採することもあった。
特開２００７−１８５８９４号公報 特開２００６−１０９７７６号公報 Conventionally, in order to cut bamboo and trees, a chain saw or an electric saw as described in Patent Document 1 has been used. Also, grass, thin trees, and the like were cut with a brush cutter as described in Patent Document 2. In addition, an operator sometimes felled manually with a saw or the like.
JP 2007-185894 A JP 2006-109776 A

しかし、手動による伐採は、効率が悪く、多大な時間と労力を費やすという問題があった。また、チェーンソーや電動鋸等は、伐採作業の際に、刃部が作業者の手元に近いため危険であり、怪我や事故が発生するという問題があった。また、飛散する削りカス等が顔や身体に当り易く安全性に問題があった。
また、竹等を地面に近い根元側で切断するには、作業者が腰をかがめる姿勢となるため、長時間の作業は、作業者に多大な負担が係るという問題があった。
また、刈払機の回転刃で切断できる木や竹の太さは極めて小さかった。 However, manual logging has a problem that it is inefficient and consumes a lot of time and labor. In addition, chainsaws and electric saws are dangerous because the blade portion is close to the operator's hand during the felling operation, and there is a problem that injuries and accidents occur. In addition, the shavings and the like that are scattered are likely to hit the face and body, causing a problem in safety.
Further, in order to cut bamboo or the like on the base side close to the ground, the worker has to bend down, so that a long work has a problem that a great burden is imposed on the worker.
In addition, the thickness of wood and bamboo that can be cut with the rotary blade of the brush cutter was extremely small.

そこで、本発明は、作業者が安定した姿勢で、容易かつ安全に伐採作業ができる伐採機の提供を目的とする。   Therefore, an object of the present invention is to provide a felling machine that allows a worker to perform a felling operation easily and safely with a stable posture.

そこで、本発明に係る伐採機は、減速ギヤ機構及び回転往復運動変換機構を備えた減速往復動装置を、刈払機本体の下端の回転軸に取着された回転刃の下方に、配設し、さらに、帯板状鋸刃を、上記減速往復動装置から前方水平状に突設したものである。   Therefore, the felling machine according to the present invention is provided with a reduction reciprocating device including a reduction gear mechanism and a rotary reciprocating motion conversion mechanism, below the rotary blade attached to the rotary shaft at the lower end of the brush cutter body. Furthermore, a band plate-like saw blade is provided so as to project horizontally from the above-described reduction reciprocating device.

また、回転軸を下端に有する刈払機本体の該回転軸に連動連結される減速ギヤ機構及び回転往復運動変換機構を備えた減速往復動装置を、上記刈払機本体の下部に配設し、さらに、帯板状の鋸刃を、上記減速往復動装置から前方水平状に突設したものである。   A reduction gear reciprocation device having a reduction gear mechanism and a rotary reciprocating motion conversion mechanism linked to the rotation shaft of a brush cutter body having a rotation shaft at a lower end, disposed at a lower portion of the brush cutter body; A band-plate-like saw blade is provided so as to project horizontally from the above-described reduction-reciprocation device.

また、上記減速ギヤ機構は、上記回転軸の回転軸心と同軸心状に回転可能に設けられる小径の駆動歯車と、該駆動歯車に噛合する大径の従動歯車と、を有し、上記回転往復運動変換機構は、上記従動歯車に固設されたカム部材と、該カム部材が摺接する内周面を有するカム受け部を形成した往復スライド部材と、を有し、該往復スライド部材に上記鋸刃が取着されるものである。   The reduction gear mechanism includes a small-diameter drive gear that is rotatably provided coaxially with the rotation axis of the rotary shaft, and a large-diameter driven gear that meshes with the drive gear. The reciprocating motion conversion mechanism includes a cam member fixed to the driven gear, and a reciprocating slide member having a cam receiving portion having an inner peripheral surface with which the cam member is slidably contacted. A saw blade is attached.

また、上記往復スライド部材は、一枚板状に形成されると共に前後方向に長いガイド孔を複数有し、かつ、上記カム受け部を間としてその前後位置に上記ガイド孔を配設し、さらに、板状の押え部材と板状の底部材とに、上下に挟まれて配設され、上記ガイド孔に、上記押え部材と底部材とを連結するボルト部材が挿通されているものである。   The reciprocating slide member is formed in a single plate shape and has a plurality of guide holes that are long in the front-rear direction, and the guide holes are disposed at the front-rear position with the cam receiving portion interposed therebetween. The plate-like pressing member and the plate-like bottom member are disposed between the upper and lower sides, and a bolt member for connecting the pressing member and the bottom member is inserted through the guide hole.

また、上記帯板状鋸刃は両刃型であって、かつ、該鋸刃の先端に抜け防止用段付部を介して幅広部を形成したものである。
また、上記帯板状鋸刃は、両刃型であって、かつ、その先端に、鋸刃を省略した直線状遊び部を、被切断用竹の外径以上の長さにわたって形成したものである。
また、上記帯板状鋸刃が、上記幅広部又は遊び部以外の部位において、その基端から漸次幅が増加する先端拡幅テーパ状である。 Further, the band plate saw blade is a double-edged blade, and a wide portion is formed at the tip of the saw blade via a stepped portion for preventing slipping.
Further, the band plate-like saw blade is a double-edged blade and is formed with a linear play portion having a saw blade omitted at the tip thereof over a length equal to or greater than the outer diameter of the bamboo to be cut. .
Further, the band plate-like saw blade has a tip widening taper shape in which the width gradually increases from the base end in a portion other than the wide portion or the play portion.

本発明の伐採機によれば、刈払機本体に帯板状鋸刃を設けるので竹や木を容易かつ安全に切断できる。また、長時間作業が容易な（立ったままの）起立姿勢で伐採作業できる。さらに、（竹を切断する場合、）鋸刃や駆動部分の損傷を防止することができる。   According to the felling machine of the present invention, the band cutter saw blade is provided in the brush cutter body, so that bamboo and trees can be cut easily and safely. In addition, logging work can be done in an upright position that makes it easy to work for a long time (while standing). Furthermore, damage to the saw blade and the drive part can be prevented (when cutting bamboo).

以下、実施の形態を示す図面に基づき本発明を詳説する。
図１は本発明の伐採機の第１の実施の形態を示す全体図である。
第１の実施の形態は、モータやエンジン等に原動機Ｋａによって回転駆動される回転軸Ａを有する刈払機本体Ｋを備え、刈払機本体Ｋの回転軸Ａに取着された回転刃１の下方に、回転軸Ａの回転を減速し、かつ、回転運動を直進運動に変換する減速往復動装置３を設け、さらに、減速往復動装置３から帯板状の鋸刃２を前方水平状に突設したものである。 Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
FIG. 1 is an overall view showing a first embodiment of a logging machine according to the present invention.
The first embodiment includes a brush cutter body K having a rotary shaft A that is driven to rotate by a motor Ka on a motor, an engine, and the like, below the rotary blade 1 attached to the rotary shaft A of the brush cutter main body K. In addition, a reduction reciprocating device 3 for reducing the rotation of the rotary shaft A and converting the rotational motion into a linear motion is provided, and a strip-like saw blade 2 is projected from the reduction reciprocating device 3 to the front horizontally. It is set.

刈払機本体Ｋは、下端に回転軸Ａを有しているものである。また、原動機Ｋａの動力を回転軸Ａに伝達する伝達軸を内部に有し、作業者が操作可能な前方下傾状の操作杆Ｋｂを備えたものである。つまり、楽な起立姿勢の作業者の前方の低位置で、回転軸Ａが回転可能なものである。また、作業者から適度に離れた安全位置で回転軸Ａが回転するものである。また、回転軸Ａに、草を刈り払い可能なチップソー等の回転刃１を取着可能なものである。
ここで、本発明に於て、下とは、作業者が低位置で竹Ｅ（図１・図２・図14・図16参照）等の根元を水平方向に伐採する際の地面Ｇ側とする。また、後とは、作業者が低位置で竹Ｅ等の根元を水平方向に伐採する際の作業者側方向とする。 The brush cutter main body K has a rotation axis A at the lower end. In addition, a transmission shaft for transmitting the power of the prime mover Ka to the rotary shaft A is provided inside, and an operation rod Kb that is inclined forward and downward that can be operated by an operator is provided. That is, the rotary shaft A can rotate at a low position in front of an operator in an easy standing posture. Further, the rotary shaft A rotates at a safe position that is moderately separated from the operator. Further, the rotary blade 1 such as a tip saw capable of cutting grass can be attached to the rotary shaft A.
Here, in the present invention, “below” means the ground G side when the operator cuts the roots of bamboo E (see FIGS. 1, 2, 14, and 16) horizontally at a low position. To do. Further, “behind” refers to the worker side direction when the operator cuts the root of bamboo E or the like horizontally at a low position.

図３に、第１の実施の形態の要部の分解斜視図を示す。
図３に於て、減速往復動装置３は、刈払機本体Ｋの下端の回転軸Ａに取着された回転刃１の下方に配設されるものである。また、操作杆Ｋｂ下方側に連結されるものである。つまり、減速往復動装置３は、刈払機本体Ｋの前方の下部に配設されるものである。また、回転軸Ａの回転を減速する減速ギヤ機構10を備えている。また、減速された回転運動を直進運動に変換する回転往復運動変換機構20を備えている。また、減速ギヤ機構10を内装すると共に、操作杆Ｋｂに連結されるケーシング４を有している。また、ケーシング４に挿通され、刈払機本体Ｋの回転軸Ａとケーシング４内部の減速ギヤ機構10の小径の駆動歯車11とを、回転軸Ａの回転軸心Ｌ1 と同心状に連結する連結軸５を有している。 FIG. 3 shows an exploded perspective view of the main part of the first embodiment.
In FIG. 3, the deceleration reciprocating device 3 is disposed below the rotary blade 1 attached to the rotary shaft A at the lower end of the bush cutter body K. Further, it is connected to the lower side of the operating rod Kb. That is, the deceleration reciprocating device 3 is disposed in the lower part in front of the brush cutter body K. In addition, a reduction gear mechanism 10 that reduces the rotation of the rotary shaft A is provided. Further, a rotary reciprocating motion conversion mechanism 20 that converts the reduced rotational motion into linear motion is provided. In addition, the reduction gear mechanism 10 is housed, and the casing 4 is connected to the operating rod Kb. Further, a connection inserted through the casing 4 and concentrically connects the rotary shaft A of the brush cutter main body K and the small-diameter drive gear 11 of the reduction gear mechanism 10 inside the casing 4 to the rotational axis L 1 of the rotary shaft A. It has a shaft 5.

減速ギヤ機構10は、連結軸５を介して回転軸Ａに連結され回転軸心Ｌ1 廻りに回転可能な駆動歯車11と、駆動歯車11に噛合する大径の従動歯車12、とを有している。
駆動歯車11は、回転軸Ａに取着される連結軸５の外周に形成した逆ネジの雄ネジ部５ａに螺合する逆ネジのネジ孔11ａを中心に貫設している。ここで、逆ネジとは、伐採作業の際に回転軸Ａが回転すると、締め込むように作用するネジを言う。
従動歯車12は、段付の従動用軸17の小径部17ｂが挿入され、従動用軸17の従動軸心Ｌ2 周りに回転するものである。また、駆動歯車11の回転を３分の１に減速するものである。 The reduction gear mechanism 10 includes a drive gear 11 that is connected to the rotary shaft A via the connecting shaft 5 and is rotatable around the rotary axis L 1 , and a large-diameter driven gear 12 that meshes with the drive gear 11. ing.
The drive gear 11 penetrates through a screw hole 11a of a reverse screw that engages with a male screw portion 5a of a reverse screw formed on the outer periphery of the connecting shaft 5 attached to the rotary shaft A. Here, the reverse screw refers to a screw that acts to be tightened when the rotation shaft A rotates during the logging operation.
Driven gear 12, the small diameter portion 17b of the driven shaft 17 of the stepped are inserted, and rotates the driven axis L 2 about the follower shaft 17. Further, the rotation of the drive gear 11 is reduced to one third.

ケーシング４は、後方側を、操作杆Ｋｂの下方位置に取着したジョイントクランプ部材６に、円弧状の連結部材７を介して取着している。即ち、減速往復動装置３が、回転軸Ａの回転軸心Ｌ1 廻りに回転するのを防止するように、刈払機本体Ｋの下部に取着されている（配設されている）。また、回転軸Ａに減速往復動装置３の荷重が集中しないように、吊り持ち状に取着されている。 The casing 4 is attached to the joint clamp member 6 attached to the lower side of the operating rod Kb via the arc-shaped connecting member 7 on the rear side. In other words, the decelerating reciprocating device 3 is attached (disposed) to the lower portion of the brush cutter main body K so as to prevent it from rotating about the rotation axis L 1 of the rotation axis A. Further, it is attached in a suspended manner so that the load of the deceleration reciprocating device 3 is not concentrated on the rotation axis A.

また、ケーシング４の内部には、刈払機本体Ｋの回転軸Ａを回転自在に支持する回転軸用ベアリングＢよりも、大きなトルクを受けることが可能な駆動用ベアリング13が内装されている。また、駆動用ベアリング13は、ケーシング４に嵌合され、連結軸５を回転自在に支持するものである。
また、ケーシング４に嵌合され、従動用軸17の大径部17ａを回転自在に支持する従動用ベアリング14を有している。
また、駆動用ベアリング13と駆動歯車11の間に、連結軸５が挿通される駆動用スペーサ15を配設している。駆動用スペーサ15は、駆動用ベアリング13と駆動歯車11との干渉を防止する適切な間隔を形成するものである。
また、従動用ベアリング14と従動歯車12の間に、従動用軸17の小径部17ｂが挿通される従動用スペーサ16を配設している。従動用スペーサ16は、従動用ベアリング14と従動歯車12との干渉を防止する適切な間隔を形成するものである。 The casing 4 includes a drive bearing 13 that can receive a larger torque than the rotary shaft bearing B that rotatably supports the rotary shaft A of the brush cutter body K. The drive bearing 13 is fitted into the casing 4 and rotatably supports the connecting shaft 5.
Further, it has a driven bearing 14 that is fitted to the casing 4 and rotatably supports the large diameter portion 17a of the driven shaft 17.
A drive spacer 15 through which the connecting shaft 5 is inserted is disposed between the drive bearing 13 and the drive gear 11. The drive spacer 15 forms an appropriate interval that prevents interference between the drive bearing 13 and the drive gear 11.
A driven spacer 16 through which the small diameter portion 17 b of the driven shaft 17 is inserted is disposed between the driven bearing 14 and the driven gear 12. The driven spacer 16 forms an appropriate interval for preventing interference between the driven bearing 14 and the driven gear 12.

回転往復運動変換機構20は、従動歯車12の下面に固設された円形状のカム部材21と、カム部材21の外周面が摺接する内周面24ａを有する楕円状のカム受け部24を貫設した一枚薄板状の往復スライド部材22と、ケーシング４と往復スライド部材22の間に配設される板状の押え部材25と、往復スライド部材22の下方に配設される板状の底部材26と、を有し、さらに、往復スライド部材22の厚さ寸法ｔよりも厚い、厚み寸法Ｔで形成された複数のガイドスペーサ部材27と、往復スライド部材22と共に鋸刃２をサンドイッチ状に挟む薄板状の取付部材28と、を有している。   The rotary reciprocating motion conversion mechanism 20 passes through an elliptical cam receiving portion 24 having a circular cam member 21 fixed on the lower surface of the driven gear 12 and an inner peripheral surface 24a with which the outer peripheral surface of the cam member 21 is in sliding contact. A single thin plate-like reciprocating slide member 22 provided, a plate-like pressing member 25 disposed between the casing 4 and the reciprocating slide member 22, and a plate-like bottom portion disposed below the reciprocating slide member 22. And a plurality of guide spacer members 27 formed with a thickness dimension T that is thicker than the thickness dimension t of the reciprocating slide member 22, and the saw blade 2 together with the reciprocating slide member 22 in a sandwich shape. And a thin plate-like attachment member 28.

円形状のカム部材21は、従動用軸17の小径部17ｂが挿入される貫孔21ａを中心から偏心した位置に形成しているものである。また、従動歯車12に設けた２つの位置決め及び廻り止め用の小孔12ｂ，12ｂに挿入される小円柱部21ｂ，21ｂを有している。つまり、カム部材21は、従動歯車12の回転に連動して従動軸心Ｌ2 を中心として回転運動するものである。また、外周面21ｃの一部が、往復スライド部材22のカム受け部24の内周面24ａに摺接されるものである。カム部材21は、従動軸心Ｌ2 廻りの回転によって、内周面24ａに摺接し、往復スライド部材22を前後方向に往復移動させるものである。 The circular cam member 21 has a through hole 21a into which the small diameter portion 17b of the driven shaft 17 is inserted at a position eccentric from the center. Moreover, it has the small cylindrical part 21b, 21b inserted in the small holes 12b, 12b for two positioning and rotation prevention provided in the driven gear 12. That is, the cam member 21 rotates around the driven axis L 2 in conjunction with the rotation of the driven gear 12. A part of the outer peripheral surface 21 c is slidably contacted with the inner peripheral surface 24 a of the cam receiving portion 24 of the reciprocating slide member 22. Cam member 21, the rotation of the driven axis L 2 around, sliding contact with the inner peripheral surface 24a, in which reciprocates the reciprocating slide member 22 in the longitudinal direction.

往復スライド部材22は、カム部材21が挿入されるカム受け部24と、カム受け部24の前方に楕円形状の逃がし孔23と、逃がし孔23の前方に鋸刃２を取り付けるための取付孔22ａと、カム受け部24を間としてその前後位置に長孔状のガイド孔22ｂと、を貫設している。また、薄い水平な一枚板状に形成されている。また、押え部材25及び取付部材28に対してスムーズに摺動するように、焼き付き等が発生する虞れの少ない鉄鋼等の硬度の高い金属で成形するのが望ましい。   The reciprocating slide member 22 includes a cam receiving portion 24 into which the cam member 21 is inserted, an elliptical escape hole 23 in front of the cam receiving portion 24, and an attachment hole 22a for attaching the saw blade 2 in front of the escape hole 23. A long hole-shaped guide hole 22b is provided through the cam receiving portion 24 at the front and rear positions thereof. Moreover, it is formed in a thin horizontal single plate shape. In addition, it is desirable to form with a metal having high hardness such as steel, which is less likely to cause seizure or the like so as to slide smoothly with respect to the holding member 25 and the mounting member 28.

往復スライド部材22の取付孔22ａは、前方側に、鋸刃２の取着孔２ａと取付部材28の孔28ａとに同心状に配設されている。つまり、往復スライド部材22は、取付部材28と共働きして、鋸刃２を、挟んで、前方水平突出状に取り付けるものである。言い換えると、鋸刃２は、減速往復動装置３から前方水平状に突設している。また、鋸刃２は、取付部材28を着脱することで、減速往復動装置３に、着脱自在に設けられている。   The mounting hole 22a of the reciprocating slide member 22 is concentrically disposed on the front side with the mounting hole 2a of the saw blade 2 and the hole 28a of the mounting member 28. That is, the reciprocating slide member 22 cooperates with the attachment member 28 and attaches the saw blade 2 in a front horizontal protruding shape with the saw blade 2 interposed therebetween. In other words, the saw blade 2 protrudes from the decelerating reciprocating device 3 in a horizontal front direction. Further, the saw blade 2 is detachably provided on the speed reduction reciprocating device 3 by attaching and detaching the attachment member 28.

往復スライド部材22のガイド孔22ｂは、４か所形成されている。カム受け部24を間としてその前後位置に２か所ずつ配設している。カム受け部24の前方の２つガイド孔22ｂは、左右に並列状に形成されている。また、後方の２つガイド孔22ｂは前後方向に直列状に形成されている。ガイド孔22ｂは、内側面にガイドスペーサ部材27を摺接可能な大きさに形成されている。言い換えると、ガイドスペーサ部材27は、ガイド孔22ｂの内側面に摺接可能な外形状を有し、ガイド孔22ｂの内側に配設されるものである。   Four guide holes 22b of the reciprocating slide member 22 are formed. Two cam receiving portions 24 are arranged at the front and rear positions thereof. Two guide holes 22b in front of the cam receiving portion 24 are formed side by side in parallel. The two rear guide holes 22b are formed in series in the front-rear direction. The guide hole 22b is formed in a size that allows the guide spacer member 27 to be in sliding contact with the inner surface. In other words, the guide spacer member 27 has an outer shape that can slide on the inner surface of the guide hole 22b, and is disposed inside the guide hole 22b.

往復スライド部材22は、押え部材25と底部材26とに、上下に挟まれて配設されている。押え部材25と底部材26とを連結するボルト部材30がガイド孔22ｂに挿通されている。また、ボルト部材30は、ガイド孔22ｂの内側にあるガイドスペーサ部材27に挿通している。つまり、往復スライド部材22は、押え部材25と底部材26とに、ガイドスペーサ部材27の厚み寸法Ｔからなる所定の間隔をもって、上下に挟まれて配設されている。言い換えると、押え部材25と往復スライド部材22と底部材26との間には、ガイドスペーサ部材27の厚み寸法Ｔと往復スライド部材22の厚さ寸法ｔとの差（Ｔ−ｔ）からなる所定の隙間を有している。   The reciprocating slide member 22 is disposed between the presser member 25 and the bottom member 26 so as to be sandwiched vertically. A bolt member 30 that connects the presser member 25 and the bottom member 26 is inserted through the guide hole 22b. The bolt member 30 is inserted through a guide spacer member 27 inside the guide hole 22b. That is, the reciprocating slide member 22 is disposed between the presser member 25 and the bottom member 26 so as to be sandwiched between the upper and lower portions at a predetermined interval of the thickness dimension T of the guide spacer member 27. In other words, between the presser member 25, the reciprocating slide member 22, and the bottom member 26, there is a predetermined difference that is formed by a difference (T−t) between the thickness dimension T of the guide spacer member 27 and the thickness dimension t of the reciprocating slide member 22. It has a gap of.

往復スライド部材22の逃がし孔23は、後述する連結ボルト部材32及びナット部材34との干渉防止及び、着脱を容易にするように、前後方向に長く楕円形状に形成されている。   The escape hole 23 of the reciprocating slide member 22 is formed in an elliptical shape that is long in the front-rear direction so as to prevent interference with a connecting bolt member 32 and a nut member 34, which will be described later, and facilitate attachment and detachment.

往復スライド部材22のカム受け部24は、左右方向に長い楕円形状に形成されるものである。また、カム部材21の外周面21ｃの一部が、内周面24ａに摺接するように形成されている。そして、カム部材21が１回転すると、往復スライド部材22が１往復するように内周面24ａが形成されている。言い換えると、従動歯車12が１回転した際に、往復スライド部材22及び鋸刃２が１往復するように形成されている。また、往復移動する距離（ストローク）は、15mm〜30mmに設定するのが望ましい。   The cam receiving portion 24 of the reciprocating slide member 22 is formed in an elliptical shape that is long in the left-right direction. A part of the outer peripheral surface 21c of the cam member 21 is formed so as to be in sliding contact with the inner peripheral surface 24a. The inner peripheral surface 24a is formed so that the reciprocating slide member 22 reciprocates once when the cam member 21 rotates once. In other words, the reciprocating slide member 22 and the saw blade 2 are formed to reciprocate once when the driven gear 12 rotates once. The distance (stroke) for reciprocal movement is preferably set to 15 mm to 30 mm.

押え部材25は、ケーシング４と往復スライド部材22の間に配設され、ケーシング４を下方か施蓋すると共に、往復スライド部材22の上方への歪みや曲がりを規制するものである。また、カム部材21との干渉を防止する第１逃げ孔25ａを貫設したものである。また、後述する連結ボルト32及びナット部材34との干渉を防止、かつ、組立・保守用の第２逃げ孔25ｃを貫設したものである。また、底部材26と連結するためのボルト部材30が挿通する連結孔25ｂを貫設したものである。また、往復スライド部材22がスムーズに摺動するように、焼き付き等が発生する虞れの少ない鉄鋼等の硬度の高い金属で成形するのが望ましい。   The presser member 25 is disposed between the casing 4 and the reciprocating slide member 22, and covers the casing 4 from below or covers it, and regulates upward distortion and bending of the reciprocating slide member 22. Further, a first escape hole 25a for preventing interference with the cam member 21 is provided. Further, interference with a connecting bolt 32 and a nut member 34, which will be described later, is prevented, and a second escape hole 25c for assembly / maintenance is provided. Further, a connecting hole 25b through which a bolt member 30 for connecting to the bottom member 26 is inserted is provided. Further, it is desirable that the reciprocating slide member 22 is formed of a metal having high hardness such as steel, which is less likely to cause seizure or the like, so that the reciprocating slide member 22 slides smoothly.

底部材26は、往復スライド部材22の下方に配設され、往復スライド部材22の下方への歪みや曲がりを規制するものである。また、従動用軸17の小径部17ｂとの干渉防止孔の第１貫通孔26ａを貫設したものである。後述する連結ボルト32及びナット部材34との干渉防止、かつ、保守・組立用の第２貫通孔26ｃを貫設している。また、押え部材25と連結するためのボルト部材30が挿通する挿通孔26ｂを貫設したものである。また、往復スライド部材22がスムーズに摺動するように、焼き付き等が発生する虞れの少ない鉄鋼等の硬度の高い金属で成形するのが望ましい。   The bottom member 26 is disposed below the reciprocating slide member 22, and regulates downward distortion and bending of the reciprocating slide member 22. Further, a first through hole 26a that is an interference preventing hole with the small diameter portion 17b of the driven shaft 17 is provided. A second through hole 26c for preventing interference with a connecting bolt 32 and a nut member 34, which will be described later, and for maintenance and assembly is provided. Further, an insertion hole 26b through which a bolt member 30 for connecting to the pressing member 25 is inserted is provided. Further, it is desirable that the reciprocating slide member 22 is formed of a metal having high hardness such as steel, which is less likely to cause seizure or the like, so that the reciprocating slide member 22 slides smoothly.

次に、連結軸５は、２種類の回転軸Ａに取着可能なものである。つまり、従来の刈払機本体Ｋを流用する際に、図４に示す外周にスプラインが形成され逆ネジの取着雌ネジ部ａ1 を有する従来の雌型回転軸Ａ1 と、図５に示す外周にスプラインが形成され逆ネジの取着雄ネジ部ａ2 を有する従来の雄型回転軸Ａ2 と、に対応可能なものである。また、雌型回転軸Ａ1 の取着雌ネジ部ａ1 と、雄型回転軸Ａ2 の取着雄ネジ部ａ2 とは、螺合可能なものである。 Next, the connecting shaft 5 can be attached to two types of rotating shafts A. That is, when diverting conventional brush cutter body K, a conventional female rotary shaft A 1 having Chakumesu threaded portion a 1 preparative reverse screw is spline formed on the outer periphery shown in FIG. 4, shown in FIG. 5 This is compatible with a conventional male rotary shaft A 2 having a spline formed on the outer periphery and having a male screw portion a 2 having a reverse thread. Further, a Chakumesu threaded portion a 1 preparative female rotary shaft A 1, and Chakuyu threaded portion a 2 preparative male rotary shaft A 2 are those that can be screwed.

図４に、雌型回転軸Ａ1 に従来の回転刃１’を取着した状態の要部断面図を示す。
図５に、雄型回転軸Ａ2 に従来の回転刃１’を取着した状態の要部断面図を示す。
雌型回転軸Ａ1 及び雄型回転軸Ａ2 は、外周のスプラインに嵌合する従来の上フランジＦ1 と、下方から従来の下フランジＦ2 で従来の回転刃１’を挟んで、回転を伝達するものである。また、上フランジＦ1 は、従来の回転刃１’の中心孔１’ａに嵌合する位置決め用の円形の小突部Ｆａを有している。また、上フランジＦ1 は、図示省略の抜け止めによって、軸心方向への脱落が防止されるものである。 Figure 4 shows a cross sectional view of a state in which attachment of a conventional rotary blade 1 'in the female rotary axis A 1.
5 shows a cross sectional view of a state in which attachment of a conventional rotary blade 1 'in the male rotary shaft A 2.
The female rotary shaft A 1 and the male rotary shaft A 2 are rotated by sandwiching the conventional rotary blade 1 ′ between the conventional upper flange F 1 fitted to the outer peripheral spline and the conventional lower flange F 2 from below. Is to communicate. Further, the upper flange F 1 has a small circular protrusion Fa for positioning that fits into the center hole 1′a of the conventional rotary blade 1 ′. Further, the upper flange F 1 is prevented from falling off in the axial direction by a retaining stopper (not shown).

図６に、雌型回転軸Ａ1 に連結軸５を取着した状態の要部断面図を示す。
図７に、雄型回転軸Ａ2 に連結軸５を取着した状態の要部断面図を示す。
図６及び図７に於て、本発明の伐採機の連結軸５は、駆動歯車11のネジ孔11ａに螺合する雄ネジ部５ａと、駆動用ベアリング13に嵌合する軸部５ｂと、上フランジＦ1 の小突部Ｆａが内嵌され回転軸心Ｌ1 と同心状の円形の小凹部５ｃと、回転刃１の中心貫孔１ａが嵌合し回転軸心Ｌ1 と同心状の円環壁部５ｄと、を有している。さらに、雌型回転軸Ａ1 の取着雌ネジ部ａ1 と同径・同ピッチ、かつ、雄型回転軸Ａ2 の取着雄ネジ部ａ2 と螺合可能な雌ネジ孔部５ｅを有している。 FIG. 6 shows a cross-sectional view of the main part in a state in which the connecting shaft 5 is attached to the female rotary shaft A 1 .
Figure 7 shows a cross sectional view of a state in which attaching the connecting shaft 5 to the male rotary shaft A 2.
6 and 7, the connecting shaft 5 of the felling machine of the present invention includes a male screw portion 5a that is screwed into the screw hole 11a of the drive gear 11, a shaft portion 5b that is fitted to the drive bearing 13, and small protuberances Fa of the upper flange F 1 is fitted into the rotational axis L 1 and the concentric circular dimples 5c, the center through-hole 1a of the rotary blade 1 is fitted rotation axis L 1 and the concentric And an annular wall portion 5d. Furthermore, the female rotary axis A 1 of preparative Chakumesu threaded portion a 1 the same diameter and the same pitch, and the Chakuyu threaded portion a 2 and can be screwed the female screw hole 5e preparative male rotary shaft A 2 Have.

図６に於て、連結軸５は、下方から雌ネジ孔部５ｅに螺合可能な連結ボルト32が螺着されると共に、連結ボルト32が雌型回転軸Ａ1 の取着雌ネジ部ａ1 に螺着することで、回転軸Ａに取着されるものである。また、駆動歯車11が螺着されるものである。また、駆動歯車11を雌型回転軸Ａ1 に、同軸心状に連結するものである。また、雄ネジ部５ａに駆動歯車11の下方から逆ネジのナット部材34が螺着されるものである。また、回転刃１を回転軸心Ｌ1 と同軸心状に配設可能なものである。 At a 6, the connecting shaft 5, together with the threadable connection bolts 32 from below the female screw hole 5e is screwed, preparative connecting bolt 32 of the female rotary axis A 1 Chakumesu threaded portion a It is attached to the rotary shaft A by being screwed to 1 . The drive gear 11 is screwed. Further, the driving gear 11 to the female rotary shaft A 1, is intended for connecting the same axis shape. Further, a reverse screw nut member 34 is screwed onto the male screw portion 5a from below the drive gear 11. Further, the rotary blade 1 can be arranged coaxially with the rotation axis L 1 .

図７に於て、連結軸５は、上方から雌ネジ孔部５ｅに、雄型回転軸Ａ2 の取着雄ネジ部ａ2 が螺着することで、雄型回転軸Ａ2 に取着されるものである。また、駆動歯車11が螺着されるものである。また、駆動歯車11を雄型回転軸Ａ2 に、同軸心状に連結するものである。また、雄ネジ部５ａに駆動歯車11の下方から逆ネジのナット部材34が螺着されるものである。また、回転刃１を回転軸心Ｌ1 と同軸心状に配設可能なものである。 At a 7, the connecting shaft 5, the female screw hole 5e from above, by Chakuyu threaded portion a 2 preparative male rotary shaft A 2 is screwed, attached to a male rotary shaft A 2 It is what is done. The drive gear 11 is screwed. Further, the driving gear 11 to the male rotary shaft A 2, is intended for connecting the same axis shape. Further, a reverse screw nut member 34 is screwed onto the male screw portion 5a from below the drive gear 11. Further, the rotary blade 1 can be arranged coaxially with the rotation axis L 1 .

つまり、連結軸５を回転軸Ａから取り外し、連結部材７からケーシング４を取り外すと、減速往復動装置３及び鋸刃２は刈払機本体Ｋから取り外される。言い換えると、減速往復動装置３は刈払機本体Ｋに着脱自在に設けられている。   That is, when the connecting shaft 5 is removed from the rotating shaft A and the casing 4 is removed from the connecting member 7, the reduction reciprocating device 3 and the saw blade 2 are removed from the brush cutter body K. In other words, the deceleration reciprocating device 3 is detachably provided on the brush cutter body K.

また、連結軸５の別の実施の一例として、図８及び図９に示す別の連結軸５は、駆動歯車11の逆ネジのネジ孔11ａに螺合する雄ネジ部５ａと、駆動用ベアリング13が嵌合する軸部５ｂと、上フランジＦ1 の小突部Ｆａが内嵌され回転軸心Ｌ1 と同心状の円形の小凹部５ｃと、回転刃１の中心貫孔１ａが嵌合され回転軸心Ｌ1 と同心状の円環壁部５ｄと、を有している。さらに、図８に示すように連結ボルト32を挿入及び係止可能かつ、図９に示すように雄型回転軸Ａ2 の取着雄ネジ部ａ2 に螺着可能な段付長ナット部材33を挿入及び係止可能な、段付孔部５ｆを形成したものである。 As another example of the connection shaft 5, another connection shaft 5 shown in FIGS. 8 and 9 includes a male screw portion 5 a that is screwed into a screw hole 11 a of a reverse screw of the drive gear 11, and a drive bearing. 13 and the shaft portion 5b for fitting, is fitted in the small protuberance Fa of the upper flange F 1 and the rotation axis L 1 and the concentric circular dimples 5c, the center through-hole 1a of the rotary blade 1 is fitted is has a rotation axis L 1 and the concentric annular walls 5d, the. Further, a stepped long nut member 33 capable of inserting and locking the connecting bolt 32 as shown in FIG. 8 and screwable to the attaching male screw portion a 2 of the male rotary shaft A 2 as shown in FIG. Is formed with a stepped hole portion 5f that can be inserted and locked.

図８に於て、別の連結軸５は、下方から連結ボルト32が、別の連結軸５に挿入され、雌型回転軸Ａ1 の取着雌ネジ部ａ1 に螺着することで、雌型回転軸Ａ1 に取着されるものである。また、駆動歯車11が螺着されるものである。また、駆動歯車11を雌型回転軸Ａ1 に、同軸心状に連結するものである。また、雄ネジ部５ａに駆動歯車11の下方から逆ネジのナット部材34が螺着されるものである。また、回転刃１を回転軸心Ｌ1 と同軸心状に配設可能なものである。 In FIG. 8, another connecting shaft 5 has a connecting bolt 32 inserted into the other connecting shaft 5 from below and is screwed to the mounting female screw portion a 1 of the female rotary shaft A 1 . it is intended to be attached to the female rotary axis a 1. The drive gear 11 is screwed. Further, the driving gear 11 to the female rotary shaft A 1, is intended for connecting the same axis shape. Further, a reverse screw nut member 34 is screwed onto the male screw portion 5a from below the drive gear 11. Further, the rotary blade 1 can be arranged coaxially with the rotation axis L 1 .

図９に於て、別の連結軸５は、下方から段付長ナット部材33が、別の連結軸５に挿入され、雄型回転軸Ａ2 の取着雄ネジ部ａ2 に螺着することで、雄型回転軸Ａ2 に取着されるものである。また、駆動歯車11が螺着されるものである。また、駆動歯車11を雄型回転軸Ａ2 に、同軸心状に連結するものである。また、雄ネジ部５ａに駆動歯車11の下方から逆ネジのナット部材34が螺着されるものである。また、回転刃１を回転軸心Ｌ1 と同軸心状に配設可能なものである。 In FIG. 9, another connecting shaft 5 has a stepped long nut member 33 inserted into the other connecting shaft 5 from below and is screwed to the mounting male screw portion a 2 of the male rotary shaft A 2. it is, is intended to be attached to the male rotary shaft a 2. The drive gear 11 is screwed. Further, the driving gear 11 to the male rotary shaft A 2, is intended for connecting the same axis shape. Further, a reverse screw nut member 34 is screwed onto the male screw portion 5a from below the drive gear 11. Further, the rotary blade 1 can be arranged coaxially with the rotation axis L 1 .

図12に示すように、帯板状鋸刃２は両刃型であって、かつ、鋸刃２の先端に抜け防止用段付部38，38を介して幅広部39が形成されている。幅広部39の先端辺部に円弧状切欠部40が形成されている。帯板状鋸刃２が、上記幅広部39以外の部位は、その基端から漸次幅Ｗが増加する先端拡幅テーパ状である。   As shown in FIG. 12, the belt-like saw blade 2 is a double-edged blade, and a wide portion 39 is formed at the tip of the saw blade 2 via stepped portions 38, 38 for preventing slipping. An arcuate notch 40 is formed at the tip side of the wide portion 39. The band plate-like saw blade 2 has a tip widening taper shape in which the width W gradually increases from the base end of the portion other than the wide portion 39.

図13（ａ）に示すように、幅広部39を矩形状に形成するも良い。また、図13（ｂ）に示すように、幅広部39を、アール部41を有する矩形状とするも良い。また、図13（ｃ）に示すように、幅広部39を半円状とするも良い。   As shown in FIG. 13A, the wide portion 39 may be formed in a rectangular shape. Further, as shown in FIG. 13B, the wide portion 39 may be a rectangular shape having a rounded portion 41. Further, as shown in FIG. 13C, the wide portion 39 may be semicircular.

次に、本発明の伐採機の第２の実施の形態について説明する。
図２は、本発明の伐採機の第２の実施の形態を示す全体図である。
第２の実施の形態は、第１の実施の形態と同様の鋸刃２が水平状に突設された減速往復動装置３を、刈払機本体Ｋの下部に連結し配設したものであって、図10に示すように、連結軸５と上フランジＦ1 との間に第１の実施の形態の回転刃１と同等の厚さを有するワッシャー部材９を挟んで取着したものである。
つまり、第２の実施の形態は、刈払機本体Ｋの回転軸Ａの回転運動を第１の実施の形態と同様の減速往復動装置３を介して鋸刃２に往復移動させるものである。 Next, a second embodiment of the felling machine of the present invention will be described.
FIG. 2 is an overall view showing a second embodiment of the felling machine of the present invention.
In the second embodiment, a speed reduction reciprocating device 3 in which a saw blade 2 similar to that in the first embodiment is horizontally provided is connected to the lower portion of the brush cutter body K and disposed. As shown in FIG. 10, a washer member 9 having a thickness equivalent to that of the rotary blade 1 of the first embodiment is sandwiched between the connecting shaft 5 and the upper flange F 1. .
That is, in the second embodiment, the rotary motion of the rotary shaft A of the brush cutter main body K is reciprocally moved to the saw blade 2 via the reduction reciprocation device 3 similar to that of the first embodiment.

ここで、図17・図18に示す比較例について説明すると、鋸刃ｂの先端まで刃部ｈがあるような鋸刃ｂで竹を切断する場合、切断作業中に、図17（ａ）に示すように、鋸刃ｂの先端が竹ｅの切り口ｃから図17（ａ）の矢印Ｒ方向に外れやすく、その後、図17（ｂ）や図18に示すように、鋸刃ｂが切り口（スリット）ｃ以外の部分に図17（ｂ）や図18の矢印Ｓ方向に衝突して弯曲する（ねじれたり、歪んだりする）というバックリングを起こしやすいという欠点がある。本実施の形態では、このようなことが起こらない。   Here, the comparative example shown in FIG. 17 and FIG. 18 will be described. When cutting bamboo with the saw blade b having the blade portion h up to the tip of the saw blade b, during the cutting operation, FIG. As shown in FIG. 17A, the tip of the saw blade b is easily detached from the cut c of the bamboo e in the direction of the arrow R in FIG. 17A, and then the saw blade b is cut (see FIG. 17B and FIG. 18). There is a drawback that buckling is likely to occur at portions other than the slit (c) in the direction of the arrow S in FIG. 17B or FIG. 18 and bend (twist or distort). In the present embodiment, this does not happen.

図15・図16は、本発明の第３の実施の形態の鋸刃２を示す。帯板状鋸刃２は、両刃型であって、かつ、その先端に、鋸刃を省略した直線状遊び部42が、被切断用竹Ｅの外径Ｄ以上の長さＬにわたって形成されている。好ましくは、直線状遊び部42が、被切断用竹Ｅの外径Ｄ以上であってかつ被切断用竹Ｅの外径Ｄの２倍以下の長さＬにわたって形成されている。長さＬがこの範囲にある場合、鋸刃２が竹Ｅの一部から鋸刃２が外れそうになると、手にかかる力又は振動が弱くなり、鋸刃２の最先端が抜け出そうとなっていることが判る。そして、バックリングを防止し、また、減速往復動機構の損傷を防止することができる。長さＬが外径Ｄよりも短い場合、適切にバックリングや減速往復動機構の損傷を防止することができない。長さＬが外径Ｄよりも長い場合、全体長さが不必要に長くなり、無駄である。その他の構成は、第１の実施の形態と同様である。   15 and 16 show a saw blade 2 according to a third embodiment of the present invention. The band plate-like saw blade 2 is of a double-edged shape, and a linear play portion 42 with no saw blade is formed at the tip thereof over a length L that is greater than or equal to the outer diameter D of the bamboo E to be cut. Yes. Preferably, the linear play part 42 is formed over a length L that is not less than the outer diameter D of the bamboo E to be cut and not more than twice the outer diameter D of the bamboo E to be cut. When the length L is within this range, when the saw blade 2 is about to be detached from a part of the bamboo E, the force or vibration applied to the hand is weakened, and the leading edge of the saw blade 2 is about to come out. You can see that And buckling can be prevented and damage to the reciprocating mechanism can be prevented. When the length L is shorter than the outer diameter D, damage to the buckling and the deceleration reciprocating mechanism cannot be prevented appropriately. When the length L is longer than the outer diameter D, the entire length becomes unnecessarily long, which is useless. Other configurations are the same as those of the first embodiment.

なお、本発明は、設計変更可能であって、例えば、鋸刃２は片刃でも良い。また、竹Ｅ以外のものを切断する場合は、抜け防止用段付部38や直線状遊び部42を省略可能である。また、第２の実施の形態の鋸刃２を第３の実施の形態の鋸刃３と置き換えたものとするも良い。また、上述した刈払機本体Ｋは、従来の刈払機の本体（原動機や操作杆等）を流用したものでも、本発明に対応した専用のものでも良い。また、刈払機本体Ｋは、原動機Ｋａを肩に掛けるものや、操作杆Ｋｂに車輪やコロ等を付設した、手押し型のものでも良い。
また、従動歯車12に従動用軸17を一体状に設けても良い。また、従動歯車12にカム部材21を一体状に設けても良い。また、ケーシング４と押え部材25とを一体状に設けても良い。
また、カム部材21の外輪郭形状は、楕円や略三角形状や卵型等、設計変更自由である。また、カム受け部24は、カム部材21が摺接し、往復スライド部材22を往復移動させることが可能な形状であれば、上述した楕円形状に限らず設計変更自由である。
また、従来の上フランジＦ1 の円形の小突部Ｆａを従来の回転刃１’の中心孔１’ａよりも小径に設け、小径となった小突部Ｆａと嵌合可能（同軸心状）に連結軸５の小凹部５ｃを形成し、さらに、従来の回転刃１’を取着可能に連結軸５の円環壁部５ｄを形成しても良い。つまり、回転軸Ａに同心状に取着されると共に従来の回転刃１’を同心状に取着可能な連結軸５としても良い。
また、往復スライド部材22が往復移動する際に、ケーシング４からガイド孔22ｂが露出しないように、ケーシング４又はガイド孔22ｂを設けるのが望ましい。
また、第２の実施の形態で、ワッシャー部材９を省略しても良い。また、上フランジＦ1 と連結軸５を一体状に設けても良い。また、減速往復動装置３を刈払機本体Ｋに固設しても良い。 The present invention can be modified in design. For example, the saw blade 2 may be a single blade. Further, when cutting a thing other than the bamboo E, the stepping preventing portion 38 and the straight play portion 42 can be omitted. Further, the saw blade 2 of the second embodiment may be replaced with the saw blade 3 of the third embodiment. Further, the above-described brush cutter body K may be a diversion body of a conventional brush cutter (such as a prime mover or an operating rod) or a dedicated one corresponding to the present invention. Further, the brush cutter body K may be one that has a prime mover Ka on its shoulder or a hand-push type that has wheels or rollers attached to the operating rod Kb.
Further, the driven shaft 17 may be provided integrally with the driven gear 12. Further, the cam member 21 may be provided integrally with the driven gear 12. Further, the casing 4 and the pressing member 25 may be provided integrally.
The outer contour shape of the cam member 21 can be freely changed in design such as an ellipse, a substantially triangular shape, or an egg shape. Further, the cam receiving portion 24 is not limited to the above-described elliptical shape, and can be freely changed in design as long as the cam member 21 is in sliding contact and can reciprocate the reciprocating slide member 22.
Further, the circular small protrusion Fa of the conventional upper flange F 1 is provided with a smaller diameter than the center hole 1 ′ a of the conventional rotary blade 1 ′, and can be fitted to the small protrusion Fa having a small diameter (coaxially centered) ), And the annular wall 5d of the connecting shaft 5 may be formed so that the conventional rotary blade 1 ′ can be attached. That is, it is good also as the connection axis | shaft 5 which can be attached to the rotating shaft A concentrically, and can attach the conventional rotary blade 1 'concentrically.
Further, it is desirable to provide the casing 4 or the guide hole 22b so that the guide hole 22b is not exposed from the casing 4 when the reciprocating slide member 22 reciprocates.
Further, the washer member 9 may be omitted in the second embodiment. Further, the upper flange F 1 and the connecting shaft 5 may be provided integrally. Further, the reduction reciprocating device 3 may be fixed to the brush cutter body K.

上述した本発明の伐採機の第１の実施の形態の使用方法（作用）について説明する。
第１の実施の形態は、刈払機本体Ｋの原動機Ｋａによって、回転軸Ａが回転した際に、連結軸５によって回転が駆動歯車11に伝達され駆動歯車11が回転軸Ａと同じ回転数で回転する。 The usage method (action) of the first embodiment of the above-described logging machine of the present invention will be described.
In the first embodiment, when the rotary shaft A is rotated by the prime mover Ka of the brush cutter body K, the rotation is transmitted to the drive gear 11 by the connecting shaft 5 and the drive gear 11 has the same rotational speed as the rotary shaft A. Rotate.

駆動歯車11が回転することで、小径の駆動歯車11と噛合する大径の従動歯車12が回転する。この際、従動歯車12は、駆動歯車11よりも少なく回転する。回転軸Ａの回転速度は、減速ギヤ機構10によって（３分の１に）減速される。例えば、回転軸Ａが６０００ｒｐｍで駆動する際、従動歯車12は、２０００ｒｐｍで回転する。   As the drive gear 11 rotates, the large-diameter driven gear 12 that meshes with the small-diameter drive gear 11 rotates. At this time, the driven gear 12 rotates less than the drive gear 11. The rotational speed of the rotary shaft A is reduced (by one third) by the reduction gear mechanism 10. For example, when the rotary shaft A is driven at 6000 rpm, the driven gear 12 rotates at 2000 rpm.

従動歯車12が回転することで、従動歯車12に固設されたカム部材21は回転する。カム部材21の外周面21ｃの一部が、カム受け部24の内周面24ａに摺接する。カム部材21が１回転することで、往復スライド部材22が１往復移動する。例えば、回転軸Ａが６０００ｒｐｍで駆動する際、従動歯車12は、２０００ｒｐｍで回転し、往復スライド部材22は、１分間で２０００往復する。つまり、回転軸Ａの回転は、回転往復運動変換機構20によって、鋸刃２で竹Ｅ等を切断するのに適した直線往復運動に変換される。   As the driven gear 12 rotates, the cam member 21 fixed to the driven gear 12 rotates. A part of the outer peripheral surface 21 c of the cam member 21 is in sliding contact with the inner peripheral surface 24 a of the cam receiving portion 24. As the cam member 21 rotates once, the reciprocating slide member 22 reciprocates once. For example, when the rotary shaft A is driven at 6000 rpm, the driven gear 12 rotates at 2000 rpm, and the reciprocating slide member 22 reciprocates 2000 times in one minute. That is, the rotation of the rotary shaft A is converted into a linear reciprocating motion suitable for cutting the bamboo E and the like with the saw blade 2 by the rotary reciprocating motion converting mechanism 20.

ここで、図11に、カム部材21と往復スライド部材22の要部断面作用説明図を示す。図11の（ａ）は、往復スライド部材22が最も後方（作業者側）にある際を示し、図11（ｂ）は、往復スライド部材22が往復移動の中間位置にある際を示し、図11（ｃ）は、往復スライド部材22が最も前方にある際を示したものである。
図11の（ａ）に於て、カム部材21が従動軸心Ｌ2 廻りに回転する際に、従動軸心Ｌ2 から最も後方側の内周面24ａにカム部材21の外周面21ｃの一部が接触した接触点Ｐが、回転軸心Ｌ1 から平面視で最も後方側に離れている際に、往復スライド部材22は、最も後方側となる。
図11の（ｂ）に於て、カム部材21の外周面21ｃの一部が、左右方向位置側の内周面24ａに接触した接触点Ｐが、回転軸心Ｌ1 から平面視で最も左右方向側に離れている際に、往復スライド部材22は、前後往復するストロークの中間位置となる。
図11の（ｃ）に於て、従動軸心Ｌ2 から最も前方側の内周面24ａにカム部材21の外周面21ｃの一部が接触した接触点Ｐが、回転軸心Ｌ1 から平面視で最も前方側に離れている際に、往復スライド部材22は、最も前方側となる。 Here, FIG. 11 shows a cross-sectional action explanatory view of main parts of the cam member 21 and the reciprocating slide member 22. FIG. 11A shows the case where the reciprocating slide member 22 is at the rearmost (operator side), and FIG. 11B shows the case where the reciprocating slide member 22 is at an intermediate position of the reciprocating movement. 11 (c) shows the case where the reciprocating slide member 22 is in the foremost position.
At a (a) in FIG. 11, when the cam member 21 rotates the driven axis L 2 around the inner peripheral surface 24a of the rearmost from the driven axis L 2 of the outer peripheral surface 21c of the cam member 21 one contact point P which part is in contact, when you are away rearmost side in a plan view from the rotation axis L 1, the reciprocating slide member 22, the rearmost side.
At a (b) of FIG. 11, a portion of the outer peripheral surface 21c of the cam member 21, the contact point P in contact with the inner peripheral surface 24a of the position in the lateral direction side, most right in a plan view from the rotation axis L 1 When moving away from the direction side, the reciprocating slide member 22 is at an intermediate position of the reciprocating stroke.
At a (c) of FIG. 11, the contact point P partially contacted the outer peripheral surface 21c of the cam member 21 to the inner peripheral surface 24a of the foremost side from the driven axis L 2 is a plan from the rotational axis L 1 When viewed farthest forward, the reciprocating slide member 22 is on the most front side.

また、往復スライド部材22が、往復運動する際に、ガイド孔22ｂの内面が、押え部材25と底部材26とを連結しケーシング４に固定されているボルト部材30が挿通したガイドスペーサ部材27に、摺接することで、左右方向の振れが規制される。即ち、往復スライド部材22はこじれることなくスムーズに、水平状に往復移動する。また、往復スライド部材22を往復運動させる力点（カム部材21とカム受け部24との接触点Ｐ）を前後で挟むようにガイド孔22ｂを設けているので、より安定してスムーズに往復移動する。   Further, when the reciprocating slide member 22 reciprocates, the inner surface of the guide hole 22b connects the press member 25 and the bottom member 26 to the guide spacer member 27 through which the bolt member 30 fixed to the casing 4 is inserted. The sliding in the left-right direction is restricted by the sliding contact. That is, the reciprocating slide member 22 smoothly reciprocates horizontally without being twisted. Further, since the guide hole 22b is provided so as to sandwich the force point (contact point P between the cam member 21 and the cam receiving portion 24) for reciprocating the reciprocating slide member 22, the reciprocating movement is performed more stably and smoothly. .

また、往復スライド部材22は、押え部材25と底部材26とに、所定の間隔で上下にはさまれて、ガイドスペーサ部材27の厚み寸法Ｔと往復スライド部材22の厚さ寸法ｔとの差（Ｔ−ｔ）からなる所定の隙間によって、竹Ｅ等の切断の際に、往復スライド部材22が撓むような負荷を受けてもこじれることなくスムーズに水平状に往復移動する。鋸刃２が前後方向にスムーズに往復運動する。   Further, the reciprocating slide member 22 is vertically sandwiched between the presser member 25 and the bottom member 26 at a predetermined interval, and the difference between the thickness dimension T of the guide spacer member 27 and the thickness dimension t of the reciprocating slide member 22 is determined. Due to the predetermined gap of (T−t), when the bamboo E or the like is cut, the reciprocating slide member 22 smoothly reciprocates horizontally without being distorted even when subjected to a load that causes bending. The saw blade 2 reciprocates smoothly in the front-rear direction.

つまり、回転軸Ａが回転すると、回転刃１は、回転する。鋸刃２は、前後方向に往復移動する。減速往復動装置３は、回転軸Ａの回転を、回転刃１が切断に適した回転数に保持しつつ、鋸刃２で竹Ｅ等を切断するのに適した往復速度の直線往復運動に変換する。
また、ケーシング４は、後方側で、操作杆Ｋｂに連結され、前後左右上下及び回転方向に、減速往復動装置３及び鋸刃２が振れるのを防止する。 That is, when the rotation axis A rotates, the rotary blade 1 rotates. The saw blade 2 reciprocates in the front-rear direction. The decelerating reciprocating device 3 converts the rotation of the rotary shaft A into a linear reciprocating motion at a reciprocating speed suitable for cutting the bamboo E or the like with the saw blade 2 while holding the rotating blade 1 at a rotation speed suitable for cutting. Convert.
Moreover, the casing 4 is connected to the operating rod Kb on the rear side, and prevents the deceleration reciprocating device 3 and the saw blade 2 from swinging in the front-rear, left-right, up-down, and rotational directions.

また、連結軸５は、回転軸Ａが、雌型回転軸Ａ1 又は雄型回転軸Ａ2 のどちらであっても、回転を確実に駆動歯車11に伝達する。
また、上フランジＦ1 の小突部Ｆａに小凹部５ｃが嵌合し、回転刃１の中心貫孔１ａに円環壁部５ｄが嵌合して、回転刃１を回転軸心Ｌ1 に同心状に配設させる。つまり、回転刃１は振れることなく安定して回転する。 Further, the connecting shaft 5 reliably transmits the rotation to the drive gear 11 regardless of whether the rotating shaft A is the female rotating shaft A 1 or the male rotating shaft A 2 .
The small recess 5c is fitted to the small protuberances Fa of the upper flange F 1, and annular wall portion 5d is fitted into the center through-hole 1a of the rotary blade 1, the rotary blade 1 to the rotary axis L 1 They are arranged concentrically. That is, the rotary blade 1 rotates stably without shaking.

伐採作業の際に、作業者が起立姿勢の状態で、作業者から離れた位置で回転する回転刃１は、木や竹Ｅ等に、鋸刃２が食い付き易い案内用の切れ込みを入れる。適切な速度で往復移動する鋸刃２は、容易に竹Ｅや木を根元から（低位置で）伐採する。また、原動機Ｋａ等を操作杆Ｋｂの先端に設けていないので操作杆Ｋｂは容易に持ち上がる。つまり、鋸刃２は、高い木の枝等を容易に伐採する。   During the felling operation, the rotary blade 1 that rotates at a position away from the worker while the worker is standing upright makes a notch for guidance that the saw blade 2 can easily bite into wood, bamboo E, or the like. The saw blade 2 reciprocating at an appropriate speed easily cuts bamboo E and trees from the root (at a low position). Further, since the prime mover Ka or the like is not provided at the tip of the operation rod Kb, the operation rod Kb is easily lifted. That is, the saw blade 2 easily cuts a high tree branch or the like.

保守・修理の際に、刈払機本体Ｋが雌型回転軸Ａ1 を有する際は、押え部材25の第２逃げ孔25ｃと、往復スライド部材22の第２逃がし孔23と、底部材26の第２貫通孔26ｃとを挿通して、連結ボルト32は容易に着脱される。つまり、ケーシング４から連結部材７を着脱すると共に、連結ボルト32を着脱することで、減速往復動装置３は、刈払機本体Ｋに対して容易に着脱される。また、回転刃１も容易に着脱される。
また、刈払機本体Ｋが雄型回転軸Ａ2 を有する際は、ケーシング４から連結部材７を着脱すると共に、雄型回転軸Ａ2 の取着雄ネジ部ａ2 に連結軸５の雌ネジ孔部５ｅを（螺）着脱させることで、減速往復動装置３は、刈払機本体Ｋに対して容易に着脱される。
また、取付部材28を着脱することで、大掛かりな分解・組立をせず、容易に鋸刃２が着脱される。
また、刈払機本体Ｋが故障した際に、鋸刃２が取着した減速往復動装置３を、他の刈払機本体Ｋに連結することで、作業の中断が防止される。 During maintenance and repair, when the brush cutter body K has the female rotary shaft A 1 , the second escape hole 25 c of the presser member 25, the second escape hole 23 of the reciprocating slide member 22, and the bottom member 26 The connecting bolt 32 is easily attached and detached through the second through hole 26c. In other words, the speed reduction reciprocating device 3 is easily attached to and detached from the brush cutter main body K by attaching and detaching the connecting member 7 from the casing 4 and attaching and detaching the connecting bolt 32. Moreover, the rotary blade 1 is also easily attached or detached.
Further, when the bush cutter main body K has a male rotary shaft A 2 serves to attach and detach the connecting member 7 from the casing 4, the female screw of the connecting shaft 5 to Chakuyu threaded portion a 2 preparative male rotary shaft A 2 The decelerating reciprocating device 3 can be easily attached to and detached from the brush cutter main body K by attaching (detaching) the hole 5e (screw).
Further, by attaching and detaching the attachment member 28, the saw blade 2 can be easily attached and detached without large-scale disassembly and assembly.
Further, when the brush cutter main body K breaks down, the decelerating reciprocating device 3 to which the saw blade 2 is attached is connected to the other brush cutter main body K, thereby preventing work interruption.

さらに、図14に示すように、（鋸刃２に図14の矢印Ｆ方向の力がはたらいて）鋸刃２が竹Ｅの一部から外れそうになると、段付部38が竹Ｅの一部に引掛かり、それ以上の矢印Ｆ方向への動きが阻止される。   Furthermore, as shown in FIG. 14, when the saw blade 2 is likely to be detached from a part of the bamboo E (when the force in the direction of arrow F in FIG. Being caught by the part, further movement in the arrow F direction is prevented.

ここで、図17と図18に示す比較例について説明する。つまり、鋸刃ｂの先端まで刃部ｈがあるような鋸刃ｂで竹を切断する場合、切断作業中に、図17（ａ）に示すように、鋸刃ｂの先端が竹ｅの切り口ｃから図17（ａ）の矢印Ｒ方向に外れやすく、その後、図17（ｂ）や図18に示すように、鋸刃ｂが切り口（スリット）ｃ以外の部分に図17（ｂ）や図18の矢印Ｓ方向に衝突して弯曲する（ねじれたり、歪んだりする）というバックリングを起こしやすいという欠点がある。本実施の形態では、このようなことが起こらない。   Here, the comparative example shown in FIGS. 17 and 18 will be described. That is, when cutting bamboo with the saw blade b having the blade portion h up to the tip of the saw blade b, the tip of the saw blade b is cut into the cut end of the bamboo e as shown in FIG. 17b easily moves in the direction of the arrow R in FIG. 17A, and then, as shown in FIG. 17B and FIG. There is a drawback that buckling is likely to occur by bending in the direction of 18 arrows S and bending (twisting or distorting). In the present embodiment, this does not happen.

次に、本発明の伐採機の第２の実施の形態の使用方法（作用）について説明する。
回転軸Ａが回転すると、第１の実施の形態と同様に、鋸刃２は、前後方向に往復移動する。減速往復動装置３は、回転軸Ａの回転を、鋸刃２で竹Ｅ等を切断するのに適した往復速度に減速された直線往復運動に変換する。
刈払機本体Ｋの下部に配設され、ケーシング４が、後方側で、操作杆Ｋｂに連結されているので、前後左右上下及び回転方向に、減速往復動装置３及び鋸刃２が振れるのを防止する。また、連結軸５は、回転軸Ａが、従来の雌型回転軸Ａ1 又は雄型回転軸Ａ2 のどちらであっても、回転を確実に駆動歯車11に伝達する。また、上フランジＦ1 の小突部Ｆａに小凹部５ｃが嵌合し、駆動歯車11を回転軸心Ｌ1 に同心状に配設させる。
また、伐採作業の際に、第１の実施の形態と同様に、作業者が起立姿勢の状態で、作業者から離れた位置で適切な速度で往復移動する鋸刃２は、容易に竹Ｅや木等を根元から伐採する。また、高い位置の枝等を容易に伐採する。
また、保守・修理の際に、第１の実施の形態と同様に、刈払機本体Ｋに対して減速往復動装置３は容易に着脱される。
また、第１の実施の形態と同様に、バックリングを防止することができる。 Next, the usage method (action) of the second embodiment of the felling machine of the present invention will be described.
When the rotation axis A rotates, the saw blade 2 reciprocates in the front-rear direction as in the first embodiment. The decelerating reciprocating device 3 converts the rotation of the rotary shaft A into a linear reciprocating motion reduced to a reciprocating speed suitable for cutting the bamboo E or the like with the saw blade 2.
Since the casing 4 is arranged at the lower part of the brush cutter main body K and is connected to the operation rod Kb on the rear side, the reduction reciprocating device 3 and the saw blade 2 can swing in the front, rear, left, right, up and down and the rotation direction. To prevent. Further, the connecting shaft 5 reliably transmits the rotation to the drive gear 11 regardless of whether the rotating shaft A is the conventional female rotating shaft A 1 or the male rotating shaft A 2 . Moreover, a small recess 5c is fitted to the small protuberances Fa of the upper flange F 1, it is arranged coaxially to the rotation axis L 1 of the drive gear 11.
In addition, during the felling operation, as in the first embodiment, the saw blade 2 that reciprocates at an appropriate speed at a position away from the worker while the worker is in a standing posture can easily Cut trees and trees from the roots. In addition, the branches at higher positions are cut easily.
In addition, during the maintenance / repair, the speed reduction reciprocating device 3 is easily attached to and detached from the brush cutter main body K as in the first embodiment.
Further, buckling can be prevented as in the first embodiment.

第３の実施の形態の使用方法（作用）は、第１の実施の形態と同様なので、説明を省略する。（バックリング及び減速往復動装置３の損傷を防止する点については、上述のとおりである。）   Since the usage method (action) of the third embodiment is the same as that of the first embodiment, description thereof is omitted. (The point of preventing damage to the buckling and deceleration reciprocating device 3 is as described above.)

以上のように、本発明は、減速ギヤ機構10及び回転往復運動変換機構20を備えた減速往復動装置３を、刈払機本体Ｋの下端の回転軸Ａに取着された回転刃１の下方に、配設し、さらに、帯板状鋸刃２を、減速往復動装置３から前方水平状に突設したので、竹Ｅや木を根元側（低位置で）で伐採できる。また、回転刃１を高回転で回転させると共に、鋸刃２を往復運動させることができる。また、作業者が起立姿勢の状態で作業できる。楽な姿勢で長時間の作業ができる。作業者から適度に離れた安全な位置で竹Ｅや木等を伐採できる。また、草等の刈払機として使用できる。また、回転刃１で、木や竹Ｅ等に、鋸刃２が食い付き易い案内用の切れ込みを入れることができる。つまり、鋸刃２での伐採作業を迅速かつ容易にできる。また、高所の枝等も伐採できる。   As described above, in the present invention, the reduction reciprocating device 3 including the reduction gear mechanism 10 and the rotary reciprocating motion conversion mechanism 20 is disposed below the rotary blade 1 attached to the rotary shaft A at the lower end of the brush cutter body K. Further, since the band-like saw blade 2 is projected in a horizontal front direction from the speed reduction reciprocating device 3, the bamboo E and the tree can be cut at the root side (at a low position). Further, the rotary blade 1 can be rotated at a high rotation and the saw blade 2 can be reciprocated. In addition, the worker can work in a standing posture. You can work for a long time with an easy posture. Bamboo E, trees, etc. can be cut off at a safe position reasonably away from the worker. Moreover, it can be used as a brush cutter for grass or the like. Further, with the rotary blade 1, it is possible to make a notch for guidance that the saw blade 2 easily bites into wood, bamboo E or the like. That is, the felling operation with the saw blade 2 can be performed quickly and easily. You can also cut branches at high places.

また、回転軸Ａを下端に有する刈払機本体Ｋの回転軸Ａに連動連結される減速ギヤ機構10及び回転往復運動変換機構20を備えた減速往復動装置３を、刈払機本体Ｋの下部に配設し、さらに、帯板状の鋸刃２を、減速往復動装置３から前方水平状に突設したので、竹Ｅや木を根元側（刈払機本体Ｋの下部で）で伐採できる。刈払機２の回転軸Ａの回転を利用して鋸刃２を往復移動させることができる。また、作業者が起立姿勢の状態で作業できる。楽な姿勢で長時間の作業ができる。作業者から適度に離れた安全な位置で竹Ｅや木等を伐採できる。回転体ではない往復移動体である鋸刃２で安全に伐採作業できる。また、高所の枝等も伐採できる。   Further, a reduction reciprocating device 3 having a reduction gear mechanism 10 and a rotary reciprocating motion conversion mechanism 20 that are linked to the rotation axis A of the brush cutter body K having the rotation axis A at the lower end is provided at the lower portion of the brush cutter body K. Furthermore, since the band-plate-like saw blade 2 protrudes from the speed reduction reciprocating device 3 in a horizontal front direction, the bamboo E and the tree can be cut down on the root side (at the lower portion of the brush cutter body K). The saw blade 2 can be reciprocated using the rotation of the rotary shaft A of the brush cutter 2. In addition, the worker can work in a standing posture. You can work for a long time with an easy posture. Bamboo E, trees, etc. can be cut off at a safe position reasonably away from the worker. The saw blade 2 which is a reciprocating body which is not a rotating body can be safely cut down. You can also cut branches at high places.

また、減速ギヤ機構10は、回転軸Ａの回転軸心Ｌ1 と同軸心状に回転可能に設けられる小径の駆動歯車11と、駆動歯車11に噛合する大径の従動歯車12と、を有し、回転往復運動変換機構20は、従動歯車12に固設されたカム部材21と、カム部材21が摺接する内周面24ａを有するカム受け部24を形成した往復スライド部材22と、を有し、往復スライド部材22に鋸刃２が取着されるので、回転軸Ａの回転を減速させて、直線往復運動に変換できる。
鋸刃２を伐採に適した速度で往復運動させることができる。回転軸Ａの回転より減速して回転する従動歯車12の回転を利用して往復スライド部材22を往復移動させることができる。往復移動用のモータやエンジンを新たに設けず、刈払機本体Ｋの回転軸Ａの回転を利用して鋸刃２を往復運動させることができる。 The reduction gear mechanism 10 includes a small-diameter drive gear 11 that is provided coaxially with the rotation axis L 1 of the rotation shaft A and a large-diameter driven gear 12 that meshes with the drive gear 11. The rotary reciprocating motion conversion mechanism 20 includes a cam member 21 fixed to the driven gear 12, and a reciprocating slide member 22 having a cam receiving portion 24 having an inner peripheral surface 24a with which the cam member 21 is slidably contacted. Since the saw blade 2 is attached to the reciprocating slide member 22, the rotation of the rotary shaft A can be decelerated and converted into a linear reciprocating motion.
The saw blade 2 can be reciprocated at a speed suitable for felling. The reciprocating slide member 22 can be reciprocated by utilizing the rotation of the driven gear 12 that is decelerated from the rotation of the rotating shaft A. The saw blade 2 can be reciprocated using the rotation of the rotary shaft A of the brush cutter body K without newly providing a reciprocating motor or engine.

また、往復スライド部材22は、一枚板状に形成されると共に前後方向に長いガイド孔22ｂを複数有し、かつ、カム受け部24を間としてその前後位置にガイド孔22ｂを配設し、さらに、板状の押え部材25と板状の底部材26とに、上下に挟まれて配設され、ガイド孔22ｂに、押え部材25と底部材26とを連結するボルト部材30が挿通されているので、往復スライド部材22を左右方向にこじれることなくスムーズに往復運動させることができる。往復スライド部材22を上下方向にこじれることなくスムーズに往復運動させることができる。往復スライド部材22及び鋸刃２を確実に水平状に往復移動させることができる。伐採作業の際に、鋸刃２が振動する（ビビる）のを軽減する。   The reciprocating slide member 22 is formed in a single plate shape and has a plurality of long guide holes 22b in the front-rear direction, and the guide hole 22b is disposed at the front-rear position with the cam receiving portion 24 therebetween, Further, the plate-like pressing member 25 and the plate-like bottom member 26 are disposed so as to be sandwiched vertically, and a bolt member 30 that connects the pressing member 25 and the bottom member 26 is inserted into the guide hole 22b. Therefore, the reciprocating slide member 22 can be smoothly reciprocated without being distorted in the left-right direction. The reciprocating slide member 22 can be smoothly reciprocated without being bent in the vertical direction. The reciprocating slide member 22 and the saw blade 2 can be reliably reciprocated horizontally. During the cutting operation, the vibration of the saw blade 2 is reduced.

また、帯板状鋸刃２は両刃型であって、かつ、鋸刃２の先端に抜け防止用段付部38，38を介して幅広部39を形成したので、鋸刃２が竹Ｅの一部からが外れそうになると、段付部38が竹Ｅの一部に引掛かり、バックリングを防止することができ、さらに、減速往復動装置が破損する事故も防止できる。
また、帯板状鋸刃２は、両刃型であって、かつ、その先端に、鋸刃を省略した直線状遊び部42を、被切断用竹Ｅの外径Ｄ以上の長さＬにわたって形成したので、鋸刃２が竹Ｅの一部から外れそうになると、手にかかる力が弱くなり、バックリングしそうになっていることが判る。そして、バックリングを防止することができ、さらに、減速往復動装置が破損する事故も防止できる。
また、帯板状鋸刃２が、幅広部39又は遊び部42以外の部位において、その基端から漸次幅Ｗが増加する先端拡幅テーパ状なので、鋸刃２が竹Ｅを切り進む方向の分力が発生して効率良く切断が可能である。 Further, the band-shaped saw blade 2 is of a double-edged type, and the wide portion 39 is formed at the tip of the saw blade 2 via the stepped portions 38, 38 for preventing slipping. When it is likely to come off from a part, the stepped portion 38 is caught on a part of the bamboo E, and buckling can be prevented, and further, an accident in which the deceleration reciprocating device is damaged can be prevented.
The band-like saw blade 2 is of a double-edged shape, and a linear play portion 42 with no saw blade is formed at the tip thereof over a length L greater than the outer diameter D of the bamboo E to be cut. Therefore, when the saw blade 2 is about to come off from a part of the bamboo E, it is understood that the force applied to the hand is weakened and buckling is about to occur. Further, buckling can be prevented, and further, an accident in which the deceleration reciprocating device is damaged can be prevented.
Further, since the band-like saw blade 2 has a tip widening taper shape in which the width W gradually increases from the base end at a portion other than the wide portion 39 or the play portion 42, the amount of the saw blade 2 in the direction in which it cuts through the bamboo E. Force is generated and cutting is possible efficiently.

本発明の伐採機の第１の実施の形態の全体図である。1 is an overall view of a first embodiment of a felling machine of the present invention. 本発明の伐採機の第２の実施の形態の全体図である。It is a whole figure of 2nd Embodiment of the felling machine of this invention. 第１の実施の形態の要部分解斜視図である。It is a principal part disassembled perspective view of 1st Embodiment. 従来の回転軸の近傍の要部断面図である。It is principal part sectional drawing of the vicinity of the conventional rotating shaft. 従来の回転軸の近傍の要部断面図である。It is principal part sectional drawing of the vicinity of the conventional rotating shaft. 連結軸の近傍の要部断面図である。It is principal part sectional drawing of the vicinity of a connecting shaft. 連結軸の近傍の要部断面図である。It is principal part sectional drawing of the vicinity of a connecting shaft. 別の実施の一例の連結軸の取着状態を説明する要部断面図である。It is principal part sectional drawing explaining the attachment state of the connecting shaft of another example of implementation. 別の実施の一例の連結軸の取着状態を説明する要部断面図である。It is principal part sectional drawing explaining the attachment state of the connecting shaft of another example of implementation. 第２の実施の形態の要部断面図である。It is principal part sectional drawing of 2nd Embodiment. 作用説明図である。It is an operation explanatory view. 第１の実施の形態の鋸刃を示す平面図である。It is a top view which shows the saw blade of 1st Embodiment. 変形例を示す要部拡大平面図である。It is a principal part enlarged plan view which shows a modification. 段付部の作用を説明する要部断面図である。It is principal part sectional drawing explaining the effect | action of a step part. 第３の実施の形態の鋸刃を示す平面図である。It is a top view which shows the saw blade of 3rd Embodiment. 説明図である。It is explanatory drawing. 比較例を示す説明図である。It is explanatory drawing which shows a comparative example. 比較例を示す説明図である。It is explanatory drawing which shows a comparative example.

符号の説明Explanation of symbols

１ 回転刃
２ 鋸刃
３ 減速往復動装置
10 減速ギヤ機構
11 駆動歯車
12 従動歯車
20 回転往復運動変換機構
21 カム部材
22 往復スライド部材
22ｂ ガイド孔
24 カム受け部
24ａ 内周面
25 押え部材
26 底部材
30 ボルト部材
38 抜け防止用段付部
39 幅広部
42 直線状遊び部
Ａ 回転軸
Ｄ 外径
Ｅ 竹
Ｋ 刈払機本体
Ｌ 長さ
Ｌ1 回転軸心
Ｗ 幅 1 Rotating blade 2 Saw blade 3 Deceleration reciprocating device
10 Reduction gear mechanism
11 Drive gear
12 Driven gear
20 rotation reciprocating motion conversion mechanism
21 Cam member
22 Reciprocating slide member
22b Guide hole
24 Cam receiver
24a Inner peripheral surface
25 Presser member
26 Bottom member
30 bolt members
38 Stepping prevention step
39 Wide part
42 Linear play part A Rotating shaft D Outer diameter E Bamboo K Brush cutter body L Length L 1 Rotating shaft center W Width

Claims (7)

減速ギヤ機構（10）及び回転往復運動変換機構（20）を備えた減速往復動装置（３）を、刈払機本体（Ｋ）の下端の回転軸（Ａ）に取着された回転刃（１）の下方に、配設し、さらに、帯板状鋸刃（２）を、上記減速往復動装置（３）から前方水平状に突設したことを特徴とする伐採機。   A rotary blade (1) having a reduction reciprocating device (3) having a reduction gear mechanism (10) and a rotary reciprocating motion conversion mechanism (20) attached to a rotary shaft (A) at the lower end of a brush cutter body (K). ), And further, a strip-like saw blade (2) is projected in a horizontal direction from the speed-reciprocating device (3). 回転軸（Ａ）を下端に有する刈払機本体（Ｋ）の該回転軸（Ａ）に連動連結される減速ギヤ機構（10）及び回転往復運動変換機構（20）を備えた減速往復動装置（３）を、上記刈払機本体（Ｋ）の下部に配設し、さらに、帯板状の鋸刃（２）を、上記減速往復動装置（３）から前方水平状に突設したことを特徴とする伐採機。   Deceleration reciprocating device (10) having a reduction gear mechanism (10) and a rotary reciprocating motion conversion mechanism (20) coupled to the rotation shaft (A) of the brush cutter body (K) having the rotation shaft (A) at the lower end ( 3) is disposed in the lower part of the brush cutter main body (K), and further, a band plate-like saw blade (2) protrudes from the decelerating reciprocating device (3) in a horizontal front direction. Logging machine. 上記減速ギヤ機構（10）は、上記回転軸（Ａ）の回転軸心（Ｌ1 ）と同軸心状に回転可能に設けられる小径の駆動歯車（11）と、該駆動歯車（11）に噛合する大径の従動歯車（12）と、を有し、
上記回転往復運動変換機構（20）は、上記従動歯車（12）に固設されたカム部材（21）と、該カム部材（21）が摺接する内周面（24ａ）を有するカム受け部（24）を形成した往復スライド部材（22）と、を有し、該往復スライド部材（22）に上記鋸刃（２）が取着される請求項１又は２記載の伐採機。 The reduction gear mechanism (10) meshes with the drive gear (11) and a small-diameter drive gear (11) that is provided coaxially with the rotation axis (L 1 ) of the rotation shaft (A). A large-diameter driven gear (12)
The rotary reciprocating motion conversion mechanism (20) includes a cam member (21) fixed to the driven gear (12), and a cam receiving portion (24a) having an inner peripheral surface (24a) with which the cam member (21) is in sliding contact. The felling machine according to claim 1 or 2, further comprising a reciprocating slide member (22) formed with 24), wherein the saw blade (2) is attached to the reciprocating slide member (22). 上記往復スライド部材（22）は、一枚板状に形成されると共に前後方向に長いガイド孔（22ｂ）を複数有し、かつ、上記カム受け部（24）を間としてその前後位置に上記ガイド孔（22ｂ）を配設し、さらに、板状の押え部材（25）と板状の底部材（26）とに、上下に挟まれて配設され、上記ガイド孔（22ｂ）に、上記押え部材（25）と底部材（26）とを連結するボルト部材（30）が挿通されている請求項３記載の伐採機。   The reciprocating slide member (22) is formed in a single plate shape and has a plurality of guide holes (22b) which are long in the front-rear direction, and the guide is located at the front-rear position with the cam receiving portion (24) in between. A hole (22b) is disposed between the plate-like presser member (25) and the plate-like bottom member (26), and the presser foot is inserted into the guide hole (22b). The felling machine according to claim 3, wherein a bolt member (30) for connecting the member (25) and the bottom member (26) is inserted. 上記帯板状鋸刃（２）は両刃型であって、かつ、該鋸刃（２）の先端に抜け防止用段付部（38）（38）を介して幅広部（39）を形成した請求項１，２，３又は４記載の伐採機。   The band plate-like saw blade (2) is a double-edged type, and a wide portion (39) is formed at the tip of the saw blade (2) via a stepped-out preventing portion (38) (38). The felling machine according to claim 1, 2, 3, or 4. 上記帯板状鋸刃（２）は、両刃型であって、かつ、その先端に、鋸刃を省略した直線状遊び部（42）を、被切断用竹（Ｅ）の外径（Ｄ）以上の長さ（Ｌ）にわたって形成した請求項１，２，３又は４記載の伐採機。   The band plate-like saw blade (2) is of a double-edged shape, and has a straight play portion (42) in which the saw blade is omitted at the tip thereof, and the outer diameter (D) of the bamboo (E) to be cut. The felling machine according to claim 1, 2, 3, or 4 formed over the length (L). 上記帯板状鋸刃（２）が、上記幅広部（39）又は遊び部（42）以外の部位において、その基端から漸次幅（Ｗ）が増加する先端拡幅テーパ状である請求項５又は６記載の伐採機。   The band-plate saw blade (2) has a tip widening taper shape in which the width (W) gradually increases from the base end at a portion other than the wide portion (39) or the play portion (42). The logging machine according to 6.
JP2008076154A 2007-12-25 2008-03-24 Tree felling machine Pending JP2009171947A (en)

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Publication number Priority date Publication date Assignee Title
EP2278407A1 (en) 2009-07-23 2011-01-26 Ricoh Company, Ltd. Image forming apparatus
CN102499019A (en) * 2011-11-15 2012-06-20 南京林业大学 Special bamboo feller
CN104920166A (en) * 2015-06-21 2015-09-23 金湖金龙祥渔业设备有限公司 Bamboo felling machine
CN104920166B (en) * 2015-06-21 2017-07-11 金湖金龙祥渔业设备有限公司 Bamboo cuts down machine
CN106941943A (en) * 2017-03-21 2017-07-14 安徽农业大学 A kind of Novel pole pruning saw
JP2019089140A (en) * 2017-11-10 2019-06-13 東芝プラントシステム株式会社 Cutting device and exchange device
CN107853123A (en) * 2017-11-18 2018-03-30 刘铁英 A kind of bamboo harvester
CN107853123B (en) * 2017-11-18 2020-11-27 徐州新南湖科技有限公司 Bamboo harvester
CN108496603A (en) * 2018-03-28 2018-09-07 李清花 A kind of double saw blade electric circular saws
CN108811858A (en) * 2018-05-30 2018-11-16 广东知识城运营服务有限公司 A kind of more kinetic energy tree trimming devices
CN108811858B (en) * 2018-05-30 2020-12-08 泉州市欣百亚智能科技有限公司 Multi-kinetic energy tree trimming device
CN111742792A (en) * 2020-06-08 2020-10-09 台山市长荣竹艺有限公司 Modeling, cultivating and planting method for transfer bamboos
JP7154673B1 (en) * 2022-03-29 2022-10-18 有限会社とまと不動産 Cord cutter attachable to brush cutter and brush cutter provided with the same
WO2023187948A1 (en) * 2022-03-29 2023-10-05 有限会社とまと不動産 Cord cutter attachable to brush cutter, and brush cutter provided with same

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