JP2006042659A5

JP2006042659A5 -

Info

Publication number: JP2006042659A5
Application number: JP2004226712A
Authority: JP
Filing date: 2004-08-03
Publication date: 2007-05-24
Anticipated expiration: 2024-08-03

Description

Cutting equipment for trees, etc.

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、樹木等が切断刃にかみ込むことが多く、再切断のため、その除去は人力によらざるを得ない欠点があった。
また、切断装置に油圧シリンダを内蔵して、切断刃を駆動する方式を採用しているので、油圧ショベルから油圧を、電磁弁、フレキシブルチューブ、ロータリージョイト、多岐な配管等を介して供給を受けるため、コスト高になる、取扱いが不便、故障が起こりやすい、保守管理が面倒であるなどの欠点があった。
そこで本発明者は、切断刃の回動を、油圧ショベルのバケットシリンダの四節リンク機構と、刃背部のてこ作用により駆動して強力な切断力を得ると共に、切断刃の側面に本体から突出させて固着した剛性の大きいストッパを設け、切断刃の上昇時に切断した樹木等を強力に除去して再切断を容易にできるようにして上記問題点を解決した。
さらに、切断刃を円弧状に形成した鋸刃の刃先を鋭く形成すると共に、刃丈を順次大きくして切り込めるように形成して、強力な切断力と切断時の強度を切断刃部に与えることに成功した。
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. Further, during cutting, often trees etc. bite the cutting blade, for re-cutting, its removal had drawbacks inevitably rely on human power.
In addition, since the cutting device incorporates a hydraulic cylinder and drives the cutting blade, hydraulic pressure is supplied from the excavator via a solenoid valve, flexible tube, rotary joint, various piping, etc. Therefore, there are disadvantages such as high cost, inconvenience in handling, easy failure, and troublesome maintenance management.
Therefore, the inventor drives the cutting blade by the four-bar linkage mechanism of the bucket cylinder of the hydraulic excavator and the lever action of the blade back to obtain a strong cutting force, and projects from the main body to the side surface of the cutting blade. The above-mentioned problems were solved by providing a stopper with high rigidity that was fixed in order to remove the trees and the like that were cut when the cutting blade was raised so that recutting was easy.
In addition, the cutting edge of the saw blade having a circular arc shape is sharply formed, and the blade length is formed so that the blade height can be sequentially increased to give the cutting blade a strong cutting force and strength at the time of cutting. Succeeded.
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、切断刃にかみ込んだ樹木等の切断部分を、人力を使わず自動的に除去して再切断を容易に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。
さらに、本発明は、油圧ショベルの油圧装置をそのまま使用して、コスト安、操作取扱容易、保守管理簡単を達成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 is capable of cutting by sequentially applying a strong cutting force to the tree or the like of an object to be cut.
In addition, the present invention provides a cutting device for trees and the like that can automatically remove a cutting portion of a tree or the like bitten by a cutting blade without using human power so as to facilitate recutting.
Furthermore, the present invention provides a cutting device for trees and the like that achieves low cost, easy operation handling, and simple maintenance management by using the hydraulic device of a hydraulic excavator as it is.

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、前記本体１０に軸着した遊転軸２３を一端に設けた刃背部２２により前記あご部１１に向かっ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の上端１０１に本体１０から突出させて固着したストッパ３０であって、切断鋸刃２０にかみ込んだ被切断物４０の除去ができるようにしたものと、前記本体１０の遊転軸２３に一端を軸着した刃背部２２と、一端を遊転軸２４を介して軸着し他端を油圧ショベル１のバケットシリンダ３のロッド４の後端に遊転軸４０１を介して軸着したＨ形リンク６と、一端を遊転軸４０１に軸着し他端を本体１０に設けた遊転軸２０１に軸着したロッドリンク５とで構成される四節リンク機構Ｌとを備え、切断鋸刃２０を回動できるようにしたものである。
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、切断鋸刃２０の切っ先２６と隣り合う切っ先２６の回動中心２３まわりの中心角度をａ°とし、回動中心２３から切っ先２６までの半径と隣り合う切っ先２６までの半径の増加分をｂとし、最初の切っ先２６から最後の切っ先２６までの中心角度をｃ°とし、最初の切っ先２６までの半径と最後の切っ先２６までの半径の増加分をｄとし、刃丈２１をｅ、刃丈数をｎとした場合、次の関係式
ｂ／ｄ＝ａ／ｃｅ１＜ｅ２＜ｅ３＜ｅ４……＜ｅｎ
が成り立つように切断鋸刃２０の切っ先２６を配置し、次第に刃丈ｅが増大する刃先２７を形成すると共に、各刃先２７が逃げ角βの逃げを設けてなり、切断鋸刃２０の刃丈２１に加重が順次かかって切断力を大きく、切っ先を鋭くして切断しやすくしたものである。
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、他端に遊転軸２４を設けた刃背部２２は、遊転軸２３を支点として、てこ作用で切断力を発揮できると共に、四節リンク機構Ｌを介してバケットシリンダ２のロッド３の力で直接駆動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と切断鋸刃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の逃げを設けられ、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、切り込みを鋭くすると共に、加重が順次かかって切断力を大きくするために、各切っ先２６を請求項２記載の関係式が成り立つような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 having an upper end fixed to the tip of an arm 2 of a hydraulic excavator 1, and a lower portion of the main body 10 toward a workpiece 40, as shown in the drawing. The jaw portion 11 formed in a concave curved surface so that scooping can be performed, and the idler shaft 23 pivotally attached to the main body 10 can be rotated toward the jaw portion 11 by a blade back portion 22 provided at one end. A fan-shaped cutting saw blade 20 and a stopper 30 that is fixed to the upper end 101 of the jaw portion 11 so as to protrude from the main body 10 and can remove the workpiece 40 that has been caught in the cutting saw blade 20. And a blade back portion 22 having one end pivotally attached to the idle shaft 23 of the main body 10, one end being pivotally attached via the idle shaft 24, and the other end to the rear end of the rod 4 of the bucket cylinder 3 of the excavator 1. Attached via idle shaft 401 A four-link mechanism L composed of an H-shaped link 6 and a rod link 5 having one end pivotally attached to the idler shaft 401 and the other end pivotally attached to the idler shaft 201 provided in the main body 10; The cutting saw blade 20 can be rotated.
Further, in order to achieve the above object, the cutting device of the present invention sets the center angle around the rotation center 23 of the cutting edge 26 adjacent to the cutting edge 26 of the cutting saw blade 20 to a ° , as shown in the figure. 23, the radius increment from 23 to the adjacent cutting edge 26 is b, the central angle from the first cutting edge 26 to the last cutting edge 26 is c °, the radius to the first cutting edge 26 and the last When the increment of the radius to the cutting edge 26 is d, the blade length 21 is e, and the number of blade lengths is n, the following relational expression
b / d = a / c e1 <e2 <e3 <e4 ... <en
The cutting edges 26 of the cutting saw blade 20 are arranged so as to hold, and the cutting edges 27 are formed so that the blade height e gradually increases. The load is applied sequentially to 21 to increase the cutting force, and the cutting edge is sharpened to facilitate cutting.
In the present invention, the cutting saw blade 20 is provided with a saw blade-like cutting edge 27 in a fan-shaped arc portion, a blade back portion 22 provided with a free rotating shaft 23 at one end and a free rotating shaft 24 at the other end. As a fulcrum , a cutting force can be exerted by lever action , and it is considered that it can be directly driven by the force of the rod 3 of the bucket cylinder 2 via the four-bar linkage mechanism L.
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, each blade edge 27 is provided with a relief angle β with respect to the line that forms the center of each cutting edge 26 and the idle shaft 23 of the cutting saw blade 20. β is preferably 3 ° to 20 °.
Further, in the present invention, as well as sharply cut, in order to increase the cutting force at stake weights sequentially, it is preferable to place each cutting edge 26 to claim 2, wherein the relational expression is established such arcuate.

本発明の切断装置は、被切断物に対し、切断鋸刃を油圧ショベルのバケットシリンダで駆動することにより、切断装置に油圧シリンダを内蔵した場合に比べ、構造簡単、取扱及び保守管理容易などの利点が生じ、また、剛性の強いストッパを本体に固着することにより、切断刃にかみ込んだ樹木等の切断部分を強力に除去して再切断を容易にできるようにした。
さらに、切断刃の切り込みを四節リンク機構とてこ作用と、刃丈を順次大きくし、かつ切っ先を鋭くした切断刃を形成することにより、大きな切断力を発揮できるようにした。 The cutting device of the present invention has a simpler structure, easier handling and maintenance management than the case where a hydraulic cylinder is built into the cutting device by driving a cutting saw blade with a bucket cylinder of a hydraulic excavator on the workpiece . Advantages arise, and a rigid stopper is fixed to the main body, so that a cutting portion such as a tree biting into the cutting blade can be strongly removed to facilitate recutting.
In addition, the cutting blade can be cut with a four-bar linkage mechanism, a lever action, and a cutting blade with a sequentially increased blade length and a sharp cutting edge so that a large cutting force can be exerted.

本発明樹木等の切断装置は、以下の実施例を最良の形態としている。The cutting apparatus for a tree of the present invention has the following embodiment as the best mode.

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刃背部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と切断鋸刃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の逃げを設けられた円弧状刃丈２１と、一端に遊転軸２３、他端に遊転軸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の上端に軸着される。
切断鋸刃２０の各刃先２７は、逃げ角βの逃げを設けられており、また、各刃先２７の切っ先２６をｂ／ｄ＝ａ／ｃの関係が成り立つように配置することにより、扇形の先端に向かうに従い刃丈ｅが大きくなる円弧状刃丈２１を形成されている。
四節リンク機構Ｌは、油圧ショベル１のアーム２に固着した本体１０を固定リンクとし、本体１０に遊転軸２３で軸着した切断鋸刃２０を揺動リンクとし、本体１０に遊転軸２０１で軸着したロッドリンク５を揺動リンクとし、切断鋸刃２０に遊転軸２４で軸着すると共に、遊転軸４０１でロッドリンク５に軸着したＨ形リンク６を連接リンクとして形成されている。
ストッパ３０は、三日月状に形成され、あご部１１の上端１０１の本体１０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を作動し、四節リンク機構Ｌを介して遊転軸２３を中心に回動させて、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し、刃背部２２のてこ作用により、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にかみ込んだときは、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、自動的に樹木等の被切断物４０を除去して再切断が容易になる。 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 an idle shaft 23 and a stopper 30 of a cutting saw blade 20 blade back portion 22 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 each cutting edge 27 is provided with a clearance of 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 cutting saw blade 20. An arcuate blade length 21, a blade back portion 22 provided with an idle shaft 23 at one end and an idle shaft 24 at the other end, and a curved blade reinforcing portion 25 on the opposite side of the blade back portion 22 are provided. The rotating shaft 23 of the cutting saw blade 20 is pivotally attached to the upper end of the jaw portion 11.
Each cutting edge 27 of the cutting saw blade 20 is provided with a clearance of a clearance angle β, and the cutting edge 26 of each cutting edge 27 is arranged so as to satisfy the relationship of b / d = a / c. An arcuate blade length 21 is formed in which the blade length e increases toward the tip.
The four-bar linkage mechanism L uses the main body 10 fixed to the arm 2 of the excavator 1 as a fixed link, and the cutting saw blade 20 attached to the main body 10 with a free rotating shaft 23 as a swinging link. The rod link 5 pivotally attached at 201 is used as a rocking link, and the idler shaft 24 is attached to the cutting saw blade 20 and the H-shaped link 6 attached to the rod link 5 by the idler shaft 401 is formed as a connecting link. Has been.
The stopper 30 is formed in a crescent shape, and is fixed to both side surfaces of the main body 10 at 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, the rod 4 is actuated by the bucket cylinder 3 and rotated about the idler shaft 23 via the four-bar linkage mechanism L, and as shown in FIG. A large cutting force can be exerted by the lever action of the blade back portion 22 by sequentially biting into the workpiece 40 and cutting.
When the cutting is interrupted in the middle or when the workpiece 40 is cut into the cutting saw blade 20 after cutting, as shown in FIG. 4, the cutting saw blade 20 is raised upward, and the workpiece 40 is moved to the stopper. if brought into contact with 30, automatically removing the object to be cut 40, such as trees recut is facilitated.

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の切断装置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 device of FIG. 1 to a hydraulic shovel. 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刃丈
２２刃背部
２３、２４、２０１、４０１遊転軸
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 Blade length 22 Blade back part 23 24, 201, 401
25 Blade reinforcement 26 Cutting edge 27 Cutting edge 30 Stopper 40 Object to be cut

Claims

A main body 10 having an upper end fixed to a tip of an arm 2 of the excavator 1; a jaw portion 11 formed in a concave curved surface so as to be scooped toward a workpiece 40 at a lower portion of the main body 10; 10 is a fan-shaped cutting saw blade 20 that can be rotated toward the jaw portion 11 by means of a blade back portion 22 provided at one end thereof. A stopper 30 that protrudes and is fixed so that the workpiece 40 can be removed from the cutting saw blade 20, and a blade back portion 22 that has one end pivotally attached to the rotating shaft 23 of the main body 10. And an H-shaped link 6 having one end pivotally attached to the rear end of the rod 4 of the bucket cylinder 3 of the excavator 1 via the idler shaft 24, and one end idled. Attached to the rotating shaft 401 and the other end of the main body 10 Cutting a tree or the like of a hydraulic excavator characterized in that it comprises a four-bar linkage mechanism L composed of a rod link 5 pivotally attached to a free rotation shaft 201 provided, and the cutting saw blade 20 can be rotated. apparatus.

The central angle around the rotation center 23 of the cutting edge 26 adjacent to the cutting edge 26 of the cutting saw blade 20 is a °, and the radius from the rotation center 23 to the cutting edge 26 and the increment of the radius to the adjacent cutting edge 26 are b. , The central angle from the first cutting edge 26 to the last cutting edge 26 is c °, the radius to the first cutting edge 26 and the radius increment to the last cutting edge 26 are d, the blade length 21 is e, the number of blade heights Where n is the following relational expression
b / d = a / c e1 <e2 <e3 <e4 …… <en
The cutting edges 26 of the cutting saw blade 20 are arranged so as to hold, and the cutting edges 27 are formed so that the blade height e gradually increases. The cutting device for trees and the like according to claim 1, wherein a weight is sequentially applied to 21 to increase a cutting force, and a cutting point is sharpened to facilitate cutting.