JP2006042659A

JP2006042659A - Tree cutter

Info

Publication number: JP2006042659A
Application number: JP2004226712A
Authority: JP
Inventors: Toshiharu Ueda; 敏治植田
Original assignee: UEDA IND; Ueda Industrial Co Ltd
Current assignee: UEDA IND; Ueda Industrial Co Ltd
Priority date: 2004-08-03
Filing date: 2004-08-03
Publication date: 2006-02-16
Anticipated expiration: 2024-08-03
Also published as: JP4537146B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tree cutter so designed as to sequentially give strong cutting power to a tree to be cut, and automatically eliminate attached materials or cut parts adhering to a cutting blade without using human power. <P>SOLUTION: This tree cutter comprises the following: a cutter body 10 provided with an inwardly curved jaw part 11 at its lower part; a fan-shaped cutting blade 20 vertically moving from the upper end 101 to the lower end 102 of the jaw part 11; an idling axis 23 making one end of the back part 22 of the cutting blade provided at the upper part of the jaw part 11 idle; a drive axis 24 provided at another end of the back part 22 of the cutting blade 20; and crescent-shaped stopper 30 projected out of the cutter body 10 so as to be fixed closely to the idling axis 23. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、樹木等の切断に使用される切断装置に関する。 The present invention relates to a cutting device used for cutting trees or the like.

従来、この種の切断装置には、特開２００２−１９９８２０号公報の第２図に示すように、切断刃をハサミ状に使用して全刃に瞬間的な圧力を加えて切断していたので、切断力不足や刃こぼれが生じやすい欠点があった。また、切断の際、樹木等が切断刃に附着することが多く、その除去は人力によらざるを得ない欠点があった。
そこで本発明者は、切断刃を円弧状に形成した鋸刃により刃先を順次切り込めるように形成して、切断刃部に強力な切断力を順次的に与えることにより上記問題点を解決すると共に、切断刃の側面に本体から突出させて固着したストッパを設け、切断刃の上昇時に切断した樹木等や附着物を自動的に除去できるようにし、本発明を完成した。
特開２００２−１９９８２０号公報 Conventionally, in this type of cutting apparatus, as shown in FIG. 2 of Japanese Patent Laid-Open No. 2002-199820, a cutting blade is used in a scissors shape, and cutting is performed by applying instantaneous pressure to all the blades. There were drawbacks that cutting force was insufficient and blade spillage was likely to occur. In addition, when cutting, trees and the like are often attached to the cutting blade, and the removal has a drawback that it must be done by human power.
Therefore, the present inventor solves the above-mentioned problems by forming the cutting blade so that the cutting edge can be sequentially cut by a circular cutting blade and sequentially applying a strong cutting force to the cutting blade portion. A stopper that protrudes from the main body and is fixed to the side surface of the cutting blade is provided so that trees and attachments cut off when the cutting blade is raised can be automatically removed, thereby completing the present invention.
JP 2002-199820 A

本発明は、被切断物の樹木等に強力な切断力を順次的に与えて切断できるようにした樹木等の切断装置を提供するものである。
また、本発明は、切断刃に附着する附着物や切断部分を、人力を使わず自動的に除去できるようにした樹木等の切断装置を提供するものである。 The present invention provides a cutting device for a tree or the like that can be cut by sequentially applying a strong cutting force to the tree or the like of an object to be cut.
The present invention also provides a cutting apparatus for trees and the like that can automatically remove attachments and cutting parts attached to a cutting blade without using human power.

本発明の切断装置は、上記課題を達成するため、図示するように、下部に内側湾曲のあご部１１を設けた本体１０と、前記あご部１１の上端１０１から下端１０２まで上下動する扇形の切断鋸刃２０と、前記あご部１１上方に設けた前記切断鋸刃２０背部２２の一端を遊転する遊転軸２３と、前記切断鋸刃２０の背部２２の他端に設けた駆動軸２４と、前記遊転軸２３に近隣して本体１０から突出させて固着した三日月状のストッパ３０とを備えたものである。
また、本発明の切断装置は、上記課題を達成するため、図示するように、油圧ショベル１のアーム２の先端に上端を固着できるようにした本体１０と、前記本体１０の下部に被切断物４０に向かって、すくいあげができるようにした凹状曲面に形成されたあご部１１と、前記あご部１１の上方に刃背部２２の一端を遊転軸２３に軸着して遊転し、他端に駆動軸２４を設けて回動できるようにした扇形の切断鋸刃２０と、前記あご部１１の上方の本体１０に固着し、切断鋸刃２０で切断した被切断物４０及び附着物の除去ができるようにした三日月状のストッパ３０とを備えたものである。
また、本発明の切断装置は、上記課題を達成するため、図６に示すように、切断鋸刃２０の切っ先２６の配置が、鋸刃２０の切っ先２６と次の切っ先２６までの回転角度ａ°に対し、前記次の切っ先２６と鋸刃回転中心２３からの長さの増加分をｂとして、鋸刃２０の全回転角度ｃ°を進んだ時の切っ先２６と鋸刃回転中心２３からの長さの増加分をｄとした場合、次の関係式
ｂ／ａ＝ｄ／ｃ
が成り立つように鋸刃２０の切っ先２６を形成すると共に、各刃先２７に逃げ角βを設けたものである。
本発明において、切断鋸刃２０は、扇形の円弧部に鋸刃状の刃先２７を設け、一端に遊転軸２３、他端に駆動軸２４を設けた刃背部２２は、遊転軸２３を支点として、てこ作用ができるように配慮されている。
あご部１１の凹状曲面は樹木等の平均的な外径により定められる。
また、本発明において、切断力を鋭くするため、各切っ先２６と鋸刃２０の遊転軸２３中心をむすぶ線に対し各刃先２７が逃げ角βに傾けられていることが好ましい。刃先２７の逃げ角βは、３°〜２０°にすることが好ましい。
さらに、本発明において、切断力を鋭くすると共に、荷重が順次かかって切断力を大きくするために、切っ先２６を上記関係式が成り立つ円弧状に配置することが好ましい。 To achieve the above object, the cutting device of the present invention has a main body 10 provided with an inwardly curved jaw portion 11 at the lower portion and a fan-shaped moving vertically from the upper end 101 to the lower end 102 of the jaw portion 11 as shown in the figure. The cutting saw blade 20, a rotating shaft 23 that idles one end of the cutting saw blade 20 back portion 22 provided above the jaw portion 11, and a drive shaft 24 provided at the other end of the back portion 22 of the cutting saw blade 20. And a crescent-shaped stopper 30 that protrudes from the main body 10 and is fixed in the vicinity of the idle shaft 23.
In order to achieve the above object, the cutting device of the present invention has a main body 10 which can be fixed at the top end of the arm 2 of the excavator 1 and a workpiece to be cut at the lower part of the main body 10 as shown in the figure. 40, the jaw 11 formed in a concave curved surface that can be scooped up, and one end of the blade back portion 22 is pivotally mounted on the idler shaft 23 above the jaw 11, and the other end The fan-shaped cutting saw blade 20 provided with a drive shaft 24 on the top and the fan-shaped cutting saw blade 20 is fixed to the main body 10 above the jaw portion 11 and the workpiece 40 and attachments cut by the cutting saw blade 20 are removed. And a crescent-shaped stopper 30 that can be used.
Further, in order to achieve the above object, the cutting device of the present invention is arranged such that the cutting edge 26 of the cutting saw blade 20 has a rotation angle a between the cutting edge 26 of the saw blade 20 and the next cutting edge 26 as shown in FIG. With respect to °, the increment of the length from the next cutting edge 26 and the saw blade rotation center 23 is b, and the distance from the cutting edge 26 and the saw blade rotation center 23 when the entire rotation angle c ° of the saw blade 20 is advanced is b. When the increase in length is d, the following relational expression
b / a = d / c
The cutting edges 26 of the saw blade 20 are formed so that the following holds, and the clearance angles β are provided at the respective blade edges 27.
In the present invention, the cutting saw blade 20 is provided with a saw blade-shaped cutting edge 27 in a fan-shaped circular arc portion, and a blade back portion 22 provided with a rotating shaft 23 at one end and a drive shaft 24 at the other end is provided with a rotating shaft 23. As a fulcrum, consideration is given to allow leverage.
The concave curved surface of the jaw portion 11 is determined by an average outer diameter of a tree or the like.
Further, in the present invention, in order to sharpen the cutting force, it is preferable that each blade edge 27 is inclined at a clearance angle β with respect to a line extending between each cutting edge 26 and the center of the rotating shaft 23 of the saw blade 20. The clearance angle β of the cutting edge 27 is preferably 3 ° to 20 °.
Furthermore, in the present invention, it is preferable that the cutting edge 26 is arranged in an arc shape that satisfies the above-described relational expression in order to sharpen the cutting force and increase the cutting force by sequentially applying a load.

本発明の切断装置は、被切断物に対し、切断刃の切り込みをてこ作用と切っ先の円弧状配置により、順次行えるようにし、切断力不足を防止できる。また、切断刃に附着する附着物や樹木等の切断部分を自動的に除去できる。 The cutting device of the present invention can sequentially cut the cutting blade into the object to be cut by the lever action and the arcuate arrangement of the cutting edges, and can prevent the cutting force from being insufficient. Further, it is possible to automatically remove cut parts such as attachments and trees attached to the cutting blade.

本発明切断装置は、扇形の切断刃とストッパとあご部を設けた本体とからなることを特徴とする。 The cutting device of the present invention comprises a fan-shaped cutting blade, a stopper, and a main body provided with a jaw portion.

本発明の実施例が図１乃至図６に示されている。
本発明実施例の切断装置は、本体１０と、切断鋸刃２０と、ストッパ３０とを備えている。
本体１０は、下部であご部１１が形成され、中間に切断鋸刃２０背部２２の遊転軸２３及びストッパ３０を設けたものである。
あご部１１は、被切断物４０に向かってすくいあげができるような、凹状の曲面に形成されている。
切断鋸刃２０は、扇形状に形成されると共に、各刃先２７の切っ先２６と鋸刃２０の遊転軸２３の中心を結ぶ線に対し各刃先２７が逃げ角βに傾けられた円弧状鋸刃２１と、一端に遊転軸２３、他端に駆動軸２４が設けられた刃背部２２と、刃背部２２の反対側に湾曲した刃補強部２５を設けている。切断鋸刃２０の遊転軸２３はあご部１１の上端近傍に軸着される。
ストッパ３０は、三日月状に形成され、あご部１１の上端１０１近傍の両側面に、切断鋸刃２０をはさむように固着されている。
従って、切断装置を使用する時は、油圧ショベル１のアーム２を駆動し、切断装置のあご部１１を被切断物４０に近づけてすくいあげたのち、図１に示すように、上げた切断鋸刃２０を、バケットシリンダ３によりロッド４、ロッドリンク６を介して駆動軸２４を駆動して、図３に示すように、切断鋸刃２０の最初の刃先２７から順次被切断物４０に噛み込ませて切断する。
切断鋸刃２０の各刃先２７は、逃げ角βに傾けて設けられており、また、切っ先２６をｂ／ａ＝ｄ／ｃの関係に配置することにより、被切断物４０に順次噛み込みを行い、切断中大きな切断力を発揮することができる。
切断が途中で中断したときや、切断後被切断物４０が切断鋸刃２０に附着したときは、図４に示すように、切断鋸刃２０を上方に上げ、被切断物４０を前記ストッパ３０に当接させれば自動的に附着物や樹木等の被切断物４０を除去できる。 An embodiment of the present invention is shown in FIGS.
The cutting device according to the embodiment of the present invention includes a main body 10, a cutting saw blade 20, and a stopper 30.
The main body 10 is formed with a jaw portion 11 at the lower portion, and provided with a rotating shaft 23 and a stopper 30 of the back portion 22 of the cutting saw blade 20 in the middle.
The jaw portion 11 is formed in a concave curved surface that can be scooped up toward the workpiece 40.
The cutting saw blade 20 is formed in a fan shape, and an arcuate saw in which each cutting edge 27 is inclined at a clearance angle β with respect to a line connecting the cutting edge 26 of each cutting edge 27 and the center of the rotating shaft 23 of the saw blade 20. A blade 21, a blade back portion 22 provided with an idle shaft 23 at one end and a drive shaft 24 at the other end, and a blade reinforcing portion 25 curved on the opposite side of the blade back portion 22 are provided. A free rotating shaft 23 of the cutting saw blade 20 is attached to the vicinity of the upper end of the jaw portion 11.
The stopper 30 is formed in a crescent shape, and is fixed to both side surfaces near the upper end 101 of the jaw portion 11 so as to sandwich the cutting saw blade 20.
Therefore, when using the cutting device, the arm 2 of the excavator 1 is driven, and the jaw 11 of the cutting device is scooped up close to the workpiece 40, and then the raised saw blade as shown in FIG. 20 is driven by the bucket cylinder 3 through the rod 4 and the rod link 6 to sequentially bite the workpiece 20 into the workpiece 40 from the first cutting edge 27 of the cutting saw blade 20 as shown in FIG. And cut.
Each cutting edge 27 of the cutting saw blade 20 is provided so as to be inclined to the clearance angle β, and by placing the cutting edge 26 in a relationship of b / a = d / c, the workpiece 40 is sequentially bitten. And can exert a great cutting force during cutting.
When the cutting is interrupted in the middle or when the workpiece 40 is attached to the cutting saw blade 20 after cutting, the cutting saw blade 20 is raised upward as shown in FIG. It is possible to automatically remove the object to be cut 40 such as attachments and trees.

本発明の切断装置は、構造簡単、操作容易で量産でき、また、油圧ショベルに取付簡単である。 The cutting device of the present invention is simple in structure, easy to operate, mass-produced, and easy to attach to a hydraulic excavator.

本発明実施例の側面図である。It is a side view of this invention Example. 図１の斜視図である。FIG. 2 is a perspective view of FIG. 1. 図１の使用状態説明図である。FIG. 2 is an explanatory diagram of a use state of FIG. 図１の別の使用状態説明図である。It is another use condition explanatory drawing of FIG. 図１の切断機を油圧ショベルに取り付けた場合の説明図である。It is explanatory drawing at the time of attaching the cutting machine of FIG. 1 to a hydraulic excavator. 図１の鋸刃の詳細を示す説明図である。It is explanatory drawing which shows the detail of the saw blade of FIG.

Explanation of symbols

１０本体
１１あご部
１０１あご部の上端
１０２あご部の下端
２０切断鋸刃
２１円弧状鋸刃
２２刃背部
２３遊転軸
２４駆動軸
２５刃補強部
２６切っ先
２７刃先
３０ストッパ
４０被切断物

DESCRIPTION OF SYMBOLS 10 Main body 11 Jaw part 101 Upper end of jaw part 102 Lower end of jaw part 20 Cutting saw blade 21 Arc-shaped saw blade 22 Blade back part 23 Sliding shaft 24 Drive shaft 25 Blade reinforcement part 26 Cutting edge 27 Cutting edge 30 Stopper 40 Cut object

Claims

A main body 10 provided with an inwardly bent jaw portion 11 at a lower portion, a fan-shaped cutting saw blade 20 that moves up and down from an upper end 101 to a lower end 102 of the jaw portion 11, and the cutting saw blade 20 provided above the jaw portion 11. An idle shaft 23 that rotates one end of the back portion 22, a drive shaft 24 provided at the other end of the back portion 22 of the cutting saw blade 20, and a protrusion that sticks out from the main body 10 in the vicinity of the idle shaft 23. A cutting device for trees or the like, comprising a crescent-shaped stopper 30.

A main body 10 capable of adhering an upper end to the tip of the arm 2 of the excavator 1, and a jaw portion 11 formed in a concave curved surface so that scooping can be performed toward the workpiece 40 at a lower portion of the main body 10; A fan-shaped cutting saw blade 20 which has one end of the blade back portion 22 mounted on the idler shaft 23 above the jaw portion 11 and freely rotated, and a drive shaft 24 provided on the other end so as to be rotatable. A hydraulic excavator comprising a crescent-shaped stopper 30 fixed to the main body 10 above the jaw portion 11 and capable of removing an object 40 to be cut and an attachment cut by the cutting saw blade 20. Cutting equipment for trees.

The arrangement of the cutting edge 26 of the cutting saw blade 20 is an increase in the length from the next cutting edge 26 and the saw blade rotation center 23 with respect to the rotation angle a ° between the cutting edge 26 of the saw blade 20 and the next cutting edge 26. Assuming that b is an increase in length from the cutting edge 26 and the saw blade rotation center 23 when the entire rotation angle c ° of the saw blade 20 is advanced, the following relational expression:
b / a = d / c
The cutting device for a tree or the like according to claim 1 or 2, wherein a cutting edge 26 of the saw blade 20 is formed so as to hold and a clearance angle β is provided for each cutting edge 27.