JP2011167158A - Tool for assisting felling - Google Patents

Tool for assisting felling Download PDF

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JP2011167158A
JP2011167158A JP2010036132A JP2010036132A JP2011167158A JP 2011167158 A JP2011167158 A JP 2011167158A JP 2010036132 A JP2010036132 A JP 2010036132A JP 2010036132 A JP2010036132 A JP 2010036132A JP 2011167158 A JP2011167158 A JP 2011167158A
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holding body
standing tree
holding
link member
logging
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JP5143160B2 (en
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Akemi Okamoto
明己 岡本
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Chugoku Electric Power Co Inc
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Chugoku Electric Power Co Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a tool for assisting felling, cutting a standing tree from the side, preventing movement for more than a prescribed distance after the upper section of a standing tree falls, and simplifying felling work. <P>SOLUTION: The tool 1 for assisting felling is used when felling by cutting a standing tree 100 from the side, and letting the upper section 103 of the standing tree 100 fall. The tool includes a first holding body 2 holding the upper section 103 of the standing tree 100, a second holding body 3 holding the lower section 104 of the standing tree 100, and connection bodies 4 and 4 preventing the first holding body 2 and the second holding body 3 from separating for more than a prescribed distance, and connecting the first holding body 2 and the second holding body 3 so as to rotate centering the lower end part of the upper section 103 when the upper section 103 of the standing tree 100 falls. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、立木を側方から切断し、立木の上方側の部位を転倒させて伐採する際に用いられる伐採補助具に関する。   The present invention relates to a cutting aid used when cutting a tree from the side and felling a portion above the tree to fall.

従来、立木を伐採する方法として、立木を側方から切断し、立木の上方側の部位を転倒させる方法が知られている。斯かる方法においては、立木の上方側の部位が転倒した後に例えば山の斜面を滑ったりして所定距離以上移動すると、災害を発生させることがある。したがって、当該災害を防止するために、立木の上方側の部位が転倒した後に所定距離以上移動するのを防止する伐採補助具が使用されている。   Conventionally, as a method for cutting a standing tree, a method is known in which the standing tree is cut from the side and the upper part of the standing tree is turned over. In such a method, a disaster may occur if the upper part of the standing tree falls and then moves over a predetermined distance, for example, by sliding on the slope of a mountain. Therefore, in order to prevent the disaster, a logging aid that prevents the upper part of the standing tree from moving over a predetermined distance after falling is used.

そして、斯かる伐採補助具として、立木の上方側の部位を保持する第１保持体と、立木の下方側の部位を保持する第２保持体と、各保持体同士が連結軸により回転可能に連結される伐採補助具が知られている（例えば、特許文献１〜３）。斯かる伐採補助具によれば、立木を側方から切断し、立木の上方側の部位を連結軸を中心に回動させることで、当該部位を転倒させ、当該部位が所定距離以上移動するのを防止できる。   And as such a logging assistance tool, the 1st holding body holding the site | part of the upper side of a standing tree, the 2nd holding body holding the site | part of the lower side of a standing tree, and each holding body can rotate with a connection shaft. The logging assistance tool connected is known (for example, patent documents 1-3). According to such a logging assist tool, by cutting the standing tree from the side and turning the upper part of the standing tree around the connecting shaft, the part is overturned, and the part moves over a predetermined distance. Can be prevented.

実用新案登録第３１２７７４０号公報Utility Model Registration No. 3127740 特開２００６−６３７３０号公報JP 2006-63730 A 特開平１０−１２１４７５号公報Japanese Patent Laid-Open No. 10-121475

ところで、特許文献１〜３に係る伐採補助具においては、連結軸は、立木の外方の位置、即ち、軸心方向で立木と重ならない位置に配置されている。これにより、立木の上方側の部位を転倒させる際には、当該部位が自身の重力で自然と回動できるまで、当該部位をその位置まで持ち上げることが必要である。   By the way, in the logging assistance tool which concerns on patent documents 1-3, the connection axis | shaft is arrange | positioned in the position of the outer side of a standing tree, ie, the position which does not overlap with a standing tree in the axial direction. Thus, when the part above the standing tree is toppled, it is necessary to lift the part to that position until the part can be rotated naturally by its own gravity.

したがって、当該部位を持ち上げるための装置を必要とする場合がある。しかも、当該部位を持ち上げるには、立木を横方向で完全に切断させておく必要もあるため、伐採作業が非常に大掛りのものになっているという問題を生じさせていた。   Therefore, a device for lifting the part may be required. Moreover, in order to lift the part, it is necessary to cut the standing tree completely in the lateral direction, which causes a problem that the logging work is very large.

よって、本発明は、斯かる事情に鑑み、立木を側方から切断し、立木の上方側の部位が転倒した後に所定距離以上移動するのを防止できると共に、伐採作業を簡素化することができる伐採補助具を提供することを課題とする。   Therefore, in view of such circumstances, the present invention can cut the standing tree from the side and prevent the upper part of the standing tree from moving over a predetermined distance after falling down, and can simplify the logging operation. The objective is to provide logging aids.

本発明に係る伐採補助具は、立木を側方から切断し、立木の上方側の部位を転倒させて伐採する際に用いられる伐採補助具において、立木の上方側の部位を保持する第１保持体と、立木の下方側の部位を保持する第２保持体と、第１保持体と第２保持体とが所定距離以上離反するのを防止すると共に、立木の上方側の部位が転倒する際に上方側の部位の下端部を中心に回動すべく、第１保持体と第２保持体とを接続する接続体とを備えることを特徴とする。   The logging support tool according to the present invention is a first support for holding the upper part of the standing tree in the logging support tool used when cutting the standing tree from the side and felling the upper part of the standing tree to fall. When the body, the second holding body that holds the lower part of the standing tree, and the first holding body and the second holding body are separated from each other by a predetermined distance or more, and the upper part of the standing tree falls And a connecting body for connecting the first holding body and the second holding body so as to rotate around the lower end portion of the upper portion.

本発明に係る伐採補助具によれば、第１保持体が立木の上方側の部位を保持すると共に、第２保持体が立木の下方側の部位を保持する。そして、接続体が第１保持体と第２保持体とを接続するため、第１保持体と第２保持体とが所定距離以上離反するのを防止でき、その結果、切断される部位の上方側の部位と下方側の部位とを所定距離以上離反するのを防止できる。   According to the felling aid according to the present invention, the first holding body holds the upper part of the standing tree, and the second holding body holds the lower part of the standing tree. And since a connection body connects a 1st holding body and a 2nd holding body, it can prevent that a 1st holding body and a 2nd holding body leave | separate more than predetermined distance, As a result, above the site | part to be cut | disconnected It is possible to prevent the side portion and the lower portion from separating from each other by a predetermined distance or more.

さらに、立木の上方側の部位が転倒する際に上方側の部位の下端部を中心に回動するように、接続体が第１保持体と第２保持体とを接続している。したがって、立木の上方側の部位を転倒させるのに、立木の上方側の部位を持ち上げることが必須の要件ではなくなり、しかもこれにより、立木を横方向で完全に切断させておくことも必須の要件ではなくなる。   Further, the connecting body connects the first holding body and the second holding body so that the upper part of the standing tree turns around the lower end of the upper part when the upper part falls. Therefore, in order to overturn the upper part of the standing tree, it is no longer necessary to lift the upper part of the standing tree, and it is also necessary to completely cut the standing tree in the lateral direction. Is not.

また、本発明に係る伐採補助具においては、接続体は、剛性を有するリンク部材を複数備え、第１保持体及びリンク部材、リンク部材同士、並びにリンク部材及び第２保持体は、それぞれ同一方向を中心に回転可能に連結されてもよい。   Moreover, in the logging aid according to the present invention, the connection body includes a plurality of rigid link members, and the first holding body and the link member, the link members, and the link member and the second holding body are in the same direction. May be connected so as to be rotatable around the center.

斯かる構成の伐採補助具によれば、接続体には、剛性を有するリンク部材が複数設けられている。そして、第１保持体及びリンク部材、リンク部材同士、並びにリンク部材及び第２保持体がそれぞれ同一方向を中心に回転可能に連結されているため、立木を切断するのに伴って、第１保持体と第２保持体とが相対的に変位しても、各リンク部材がそれに追従して変位できる。   According to the logging assist tool having such a configuration, the connection body is provided with a plurality of rigid link members. Since the first holding body and the link member, the link members, and the link member and the second holding body are connected to each other so as to be rotatable about the same direction, the first holding is performed as the standing tree is cut. Even if the body and the second holding body are relatively displaced, each link member can be displaced following the displacement.

さらに、各リンク部材が回転中心の方向と直交する面に沿って回転することになるため、立木の上方側の部位を当該回転中心と同一方向を中心に回動することができる。したがって、立木を側方から切断し、立木の上方側の部位を所望の方向に転倒させることができる。   Furthermore, since each link member rotates along a plane orthogonal to the direction of the rotation center, the upper part of the tree can be rotated around the same direction as the rotation center. Therefore, the standing tree can be cut from the side, and the upper part of the standing tree can be turned over in a desired direction.

また、本発明に係る伐採補助具においては、接続体は、剛性を有するリンク部材を一つ備え、リンク部材は、一方の保持体に、連結軸を中心に回転可能に連結され、他方の保持体は、連結軸と直交する面に沿ってリンク部材を案内する案内部と、第１保持体と第２保持体とが所定距離以上離反するのを防止すべく、リンク部材を係止可能な係止部とを備えてもよい。   Moreover, in the logging assisting tool according to the present invention, the connection body includes one link member having rigidity, and the link member is connected to one holding body so as to be rotatable around the connecting shaft, and the other holding body. The body can lock the link member in order to prevent the guide portion that guides the link member along a plane orthogonal to the connecting shaft, and the first holding body and the second holding body from separating apart by a predetermined distance or more. You may provide a latching | locking part.

斯かる構成の伐採補助具によれば、接続体には、剛性を有するリンク部材が一つ設けられている。そして、立木を切断するのに伴って、第１保持体と第２保持体とが相対的に変位しても、リンク部材が、一方の保持体と連結される連結軸を中心として回転すると共に、連結軸と直交する面に沿って他方の保持体の案内部に案内されることで、追従して変位できる。   According to the logging assist tool having such a configuration, the connection body is provided with one rigid link member. And even if a 1st holding body and a 2nd holding body displace relatively with cutting | disconnecting a standing tree, while a link member rotates centering on the connection axis | shaft connected with one holding body, By being guided by the guide portion of the other holding body along a plane orthogonal to the connecting shaft, it can be displaced following.

また、リンク部材が連結軸の軸心方向と直交する面に沿って変位することになるため、立木の上方側の部位を連結軸の軸心方向と直交する面に沿って回動させることができ、その結果、立木を側方から切断し、立木の上方側の部位を所望の方向に転倒させることができる。さらに、第１保持体と第２保持体とが所定距離以上離反しようとすると、係止部がリンク部材を係止するため、第１保持体と第２保持体とが所定距離以上離反するのを防止できる。   Further, since the link member is displaced along a plane orthogonal to the axial direction of the connecting shaft, the upper portion of the standing tree can be rotated along a plane orthogonal to the axial direction of the connecting shaft. As a result, the standing tree can be cut from the side, and the upper part of the standing tree can be turned over in a desired direction. Further, when the first holding body and the second holding body are separated from each other by a predetermined distance or more, the locking portion locks the link member, so that the first holding body and the second holding body are separated from each other by a predetermined distance or more. Can be prevented.

また、本発明に係る伐採補助具においては、接続体は、立木を介在して配置されるべく、離間して一対設けられてもよい。   Moreover, in the felling assistance tool which concerns on this invention, a connection body may be spaced apart and provided so that a standing tree may be interposed.

斯かる構成の伐採補助具によれば、離間して設けられる一対の接続体が立木を介在して配置される。これにより、両側に配置された接続体により、立木が転倒する方向を制御することになるため、立木を側方から切断し、立木の上方側の部位を所望の方向に転倒させるのを確実に制御することができる。   According to the logging assist tool having such a configuration, the pair of connection bodies provided apart from each other are arranged with the standing trees interposed therebetween. As a result, the connecting body arranged on both sides controls the direction in which the standing tree falls, so that it is ensured that the standing tree is cut from the side and the upper part of the standing tree is toppled in the desired direction. Can be controlled.

以上の如く、本発明に係る伐採補助具によれば、立木を側方から切断し、立木の上方側の部位が転倒した後に所定距離以上移動するのを防止できると共に、伐採作業を簡素化することができるという優れた効果を奏する。   As described above, according to the logging assisting tool according to the present invention, it is possible to cut the standing tree from the side and prevent the upper part of the standing tree from moving over a predetermined distance after falling down, and simplify the logging operation. There is an excellent effect of being able to.

本発明の一実施形態に係る伐採補助具の全体図であって、立木に装着された正面図を示す。BRIEF DESCRIPTION OF THE DRAWINGS It is a whole view of the logging assistance tool which concerns on one Embodiment of this invention, Comprising: The front view with which the standing tree was mounted | worn is shown. 同実施形態に係る伐採補助具の全体図であって、（ａ）は正面図、（ｂ）は上面図（平面図）を示す。It is a general view of the logging assistance tool which concerns on the embodiment, Comprising: (a) is a front view, (b) shows a top view (plan view). 同実施形態に係る伐採補助具の全体図であって、（ａ）は左側面図、（ｂ）は右側面図を示す。It is a general view of the felling assistance tool which concerns on the embodiment, (a) is a left view, (b) shows a right view. 同実施形態に係る伐採補助具の立木への装着方法を説明する図であって、（ａ）は全体上面図（全体平面図）、（ｂ）は要部拡大上面図（要部拡大平面図）を示す。It is a figure explaining the mounting method to the standing tree of the felling auxiliary tool which concerns on the same embodiment, Comprising: (a) is a whole top view (whole plan view), (b) is a principal part enlarged top view (principal part enlarged plan view) ). 同実施形態に係る伐採補助具を装着した立木の伐採方法を説明する図であって、（ａ）及び（ｂ）はそれぞれ全体正面図を示す。It is a figure explaining the felling method of the standing tree equipped with the felling auxiliary tool which concerns on the embodiment, Comprising: (a) And (b) shows the whole front view, respectively. 本発明の他の実施形態に係る伐採補助具の全体図であって、（ａ）は正面図、（ｂ）は下面図（底面図）を示す。It is a general view of the logging assistance tool which concerns on other embodiment of this invention, Comprising: (a) is a front view, (b) shows a bottom view (bottom view). 本発明のさらに他の実施形態に係る伐採補助具の全体図であって、（ａ）及び（ｂ）はそれぞれ正面図を示す。It is a general view of the logging assistance tool which concerns on other embodiment of this invention, Comprising: (a) And (b) shows a front view, respectively.

以下、本発明に係る伐採補助具における一実施形態について、図１〜図５を参酌して説明する。   Hereinafter, an embodiment of a logging assisting tool according to the present invention will be described with reference to FIGS.

本実施形態に係る伐採補助具の各構成を説明するのに先立って、図１を参酌して、立木１００を伐採する方法について説明する。まず、立木１００の一方の側方側（伐倒側）に三角形状の第１の切欠（受け口）１０１を形成するようにして、切断工具（チェーンソー等）で立木１００を切断する。   Prior to describing each configuration of the logging assisting tool according to the present embodiment, a method for cutting the standing tree 100 will be described with reference to FIG. First, the first notch (receiving port) 101 having a triangular shape is formed on one side (falling side) of the standing tree 100, and the standing tree 100 is cut with a cutting tool (such as a chain saw).

そして、他方の側方側（伐採側）から横方向（水平方向）に第２の切欠（追い口）１０２を形成するようにして、立木１００を切断する。これにより、立木１００の上方側の部位（以下「上方部位」という）１０３を転倒させて、立木１００の下方側の部位（以下「下方部位」という）１０４から切り離している。   Then, the standing tree 100 is cut so as to form the second notch (tracing port) 102 in the lateral direction (horizontal direction) from the other side side (the cutting side). As a result, the upper part (hereinafter referred to as “upper part”) 103 of the standing tree 100 is turned over and separated from the lower part (hereinafter referred to as “lower part”) 104 of the standing tree 100.

図１〜図５に示すように、本実施形態に係る伐採補助具１は、上記のように、立木１００を側方から切断し、立木１００の上方部位１０３を転倒させて伐採する際に用いられる。そして、伐採補助具１は、立木１００の上方部位１０３を保持する第１保持体２と、立木１００の下方部位１０４を保持する第２保持体３とを備える。   As shown in FIGS. 1 to 5, the logging assisting tool 1 according to the present embodiment is used when cutting the standing tree 100 from the side and felling the upper part 103 of the standing tree 100 to fall down as described above. It is done. The logging assisting tool 1 includes a first holding body 2 that holds the upper part 103 of the standing tree 100 and a second holding body 3 that holds the lower part 104 of the standing tree 100.

また、伐採補助具１は、立木１００を介在して配置されるべく離間して配置され、第１保持体２と第２保持体３とを接続する一対の接続体４，４を備える。さらに、伐採補助具１は、切断工具（チェーンソー等）で立木１００を切断する際に、各接続体４を位置決めさせるための位置決め手段５，５を備える。   In addition, the logging assisting tool 1 includes a pair of connecting bodies 4 and 4 that are arranged so as to be arranged with the standing tree 100 interposed therebetween and connect the first holding body 2 and the second holding body 3. Further, the logging assist tool 1 includes positioning means 5 and 5 for positioning each connection body 4 when cutting the standing tree 100 with a cutting tool (such as a chain saw).

第１保持体２は、立木１００（上方部位１０３）を挟持する第１挟持部２１及び第２挟持部２２と、各挟持部２１，２２の一端部同士を枢着させる枢着部２３と、各挟持部２１，２２の他端部同士を取り付ける取付部２４とを備える。そして、第１保持体２は、各挟持部２１，２２を立木１００（上方部位１０３）に強固に固定するための第１及び第２固定手段２５，２６と、各接続体４に連結される連結部２７，２７とを備える。また、第１保持体２は、位置決め手段５を掛止するための掛止部２８，…を備える。   The first holding body 2 includes a first holding part 21 and a second holding part 22 that hold the standing tree 100 (upper part 103), and a pivoting part 23 that pivotally attaches one end parts of the holding parts 21 and 22; And an attachment portion 24 for attaching the other end portions of the holding portions 21 and 22 to each other. And the 1st holding body 2 is connected with each connection body 4 with the 1st and 2nd fixing means 25 and 26 for fixing each clamping part 21 and 22 to the standing tree 100 (upper part 103) firmly. And connecting portions 27, 27. Moreover, the 1st holding body 2 is provided with the latching | locking part 28 for ... which latches the positioning means 5. FIG.

第１挟持部２１は、円弧状に形成され、一端部が枢着部２３を介して第２挟持部２２の一端部に枢着される第１基体部２１１を備える。また、第１挟持部２１は、円弧状に形成され、一端部が第１ヒンジ部材２１２を介して第１基体部２１１の他端部に枢着され、且つ他端部が第２挟持部２２の他端部と係合する第１係合部２１３を備える。   The first clamping part 21 includes a first base part 211 that is formed in an arc shape and whose one end is pivotally attached to one end of the second clamping part 22 via the pivoting part 23. The first clamping part 21 is formed in an arc shape, one end is pivotally attached to the other end of the first base part 211 via the first hinge member 212, and the other end is the second clamping part 22. The 1st engaging part 213 engaged with the other end part of this is provided.

第２挟持部２２は、円弧状に形成され、一端部が枢着部２３を介して第１挟持部２１（第１基体部２１１）の一端部に枢着される第２基体部２２１を備える。また、第２挟持部２２は、円弧状に形成され、一端部が第２ヒンジ部材２２２を介して第２基体部２２１の他端部に枢着され、且つ他端部が第１挟持部２１（第１係合部２１３）の他端部と係合する第２係合部２２３を備える。   The 2nd clamping part 22 is formed in circular arc shape, and is provided with the 2nd base | substrate part 221 by which one end part is pivotally attached to the one end part of the 1st clamping part 21 (1st base | substrate part 211) via the pivoting part 23. . The second clamping part 22 is formed in an arc shape, one end is pivotally attached to the other end of the second base part 221 via the second hinge member 222, and the other end is the first clamping part 21. A second engagement portion 223 that engages with the other end portion of the (first engagement portion 213) is provided.

第１係合部２１３及び第２係合部２２３は、互いに重なり合う他端部に、嵌合する凹凸状の嵌合部２１３ａ，２２３ａをそれぞれ備える。具体的には、第２係合部２２３が外側から第１係合部２１３に重なるように構成され、第１係合部２１３の外周面と第２係合部２２３の内周面とに、それぞれ嵌合部２１３ａ，２２３ａが設けられている。また、第２係合部２２３は、周方向に沿って配置され且つ径方向で貫通する貫通孔２２３ｂを備える。   The first engaging portion 213 and the second engaging portion 223 include concave and convex fitting portions 213a and 223a that are fitted to the other end portions that overlap each other. Specifically, the second engagement portion 223 is configured to overlap the first engagement portion 213 from the outside, and the outer peripheral surface of the first engagement portion 213 and the inner peripheral surface of the second engagement portion 223 are Fitting portions 213a and 223a are provided, respectively. The second engaging portion 223 includes a through hole 223b that is disposed along the circumferential direction and penetrates in the radial direction.

取付部２４は、第１係合部２１３から径方向外方に突出され、先端部が回転されることで、第２係合部２２３の貫通孔２２３ｂに挿通可能な状態と、第２係合部２２３を係止して抜け止め可能な状態（もしくは、貫通孔２２３ｂに挿入不能な状態）とに切り替え可能な留め部材２４１を備える。また、取付部２４は、各係合部２１３を係合する状態で維持させるべく、締結手段２４２，２４２を一対備える。   The attachment portion 24 protrudes radially outward from the first engagement portion 213, and the tip portion is rotated so that the attachment portion 24 can be inserted into the through hole 223b of the second engagement portion 223. A retaining member 241 that can be switched to a state in which the portion 223 is locked and can be prevented from being pulled out (or in a state in which it cannot be inserted into the through-hole 223b) is provided. Moreover, the attachment part 24 is provided with a pair of fastening means 242 and 242 in order to maintain each engagement part 213 in the engaged state.

各締結手段２４２は、第１係合部２１３から径方向外方に突出し且つ第２係合部２２３の貫通孔２２３ｂよりも小さく形成されて貫通孔２２３ｂに挿入される第１螺子部材２４２ａと、貫通孔２２３ｂよりも大きく形成され、貫通孔２２３ｂに挿通された第１螺子部材２４２ａの先端部から螺合されることにより、第１螺子部材２４２ａを貫通孔２２３ｂから抜け止めさせる第２螺子部材２４２ｂとを備える。   Each fastening means 242 protrudes radially outward from the first engagement portion 213 and is formed smaller than the through hole 223b of the second engagement portion 223, and is inserted into the through hole 223b, and a first screw member 242a. A second screw member 242b that is formed larger than the through hole 223b and is screwed from the tip of the first screw member 242a inserted into the through hole 223b, thereby preventing the first screw member 242a from coming off from the through hole 223b. With.

第１固定手段２５は、径方向から立木１００を押圧することで、立木１００に第１保持体２を強固に固定させる。具体的には、第１固定手段２５は、各挟持部２１，２２の内側に配置され、立木１００に当接する複数（本実施形態においては三つ）の当接部２５１，…と、各当接部２５１で立木１００を押圧すべく、各当接部２５１を径方向に移動させる移動手段２５２とを備える。   The first fixing means 25 firmly fixes the first holding body 2 to the standing tree 100 by pressing the standing tree 100 from the radial direction. Specifically, the first fixing means 25 is disposed inside each of the sandwiching portions 21 and 22 and has a plurality of (three in this embodiment) contact portions 251,. In order to press the standing tree 100 with the contact portion 251, a moving means 252 that moves each contact portion 251 in the radial direction is provided.

各当接部２５１は、各挟持部２１，２２（具体的には、第１基体部２１１、第１係合部２１３及び第２基体部２２１）に収容され、内周面が各挟持部２１，２２の内周面と面一の状態から、移動手段２５２により径方向の内方に移動される。また、各移動手段２５２は、先端部が当接部２５１に対して回転可能に連結され、各挟持部２１，２２に設けられる螺子孔と螺合することで、径方向に移動する螺子部材としている。   Each abutting portion 251 is accommodated in each clamping portion 21, 22 (specifically, the first base portion 211, the first engaging portion 213, and the second base portion 221), and the inner peripheral surface thereof is each clamping portion 21. , 22 are moved inward in the radial direction by the moving means 252 from the state of being flush with the inner peripheral surfaces of the inner peripheral surfaces. In addition, each moving means 252 is a screw member that moves in the radial direction by being rotatably connected to the abutting portion 251 at the distal end portion and screwed with a screw hole provided in each holding portion 21, 22. Yes.

第２固定手段２６は、径方向から立木１００に突き刺されることで、立木１００に第１保持体２を強固に固定させる。具体的には、第２固定手段２６は、先端部が尖って形成され、各挟持部２１，２２（詳しくは、第１基体部２１１、第２基体部２２１及び第２係合部２２３）に設けられる螺子孔と螺合することで、径方向に移動する複数の先鋭部材２６１，…を備える。   The 2nd fixing means 26 makes the standing tree 100 firmly fix the 1st holding body 2 by being stabbed by the standing tree 100 from radial direction. Specifically, the second fixing means 26 is formed with a pointed tip, and is attached to each of the holding portions 21 and 22 (specifically, the first base portion 211, the second base portion 221 and the second engaging portion 223). A plurality of sharpened members 261,... That move in the radial direction by being screwed into the provided screw holes are provided.

各連結部２７は、各挟持部２１，２２の一端側、具体的には、各基体部２１１，２２１の一端側であって、且つ各挟持部２１，２２の外方側に配置される。そして、各連結部２７は、挟持部２１（２２）側（内方側）が挟持部２１（２２）の形状に対応して湾曲した凹状に形成される一方、接続体４側（外方側）が平面状に形成されている。   Each connecting portion 27 is disposed on one end side of each sandwiching portion 21, 22, specifically, on one end side of each base portion 211, 221, and on the outer side of each sandwiching portion 21, 22. Each connecting portion 27 is formed in a concave shape in which the holding portion 21 (22) side (inward side) is curved corresponding to the shape of the holding portion 21 (22), while the connecting body 4 side (outside side) ) Is formed in a planar shape.

各掛止部２８は、各挟持部２１，２２から下方側に突出して設けられると共に、先端部がフック状に形成されている。そして、掛止部２８，…は、第１ヒンジ部材２１２、第２ヒンジ部材２２２及び枢着部２３の下方側にそれぞれ連結されている。   Each latching portion 28 is provided so as to protrude downward from each clamping portion 21, 22, and the tip portion is formed in a hook shape. .. Are connected to the first hinge member 212, the second hinge member 222, and the lower side of the pivot portion 23, respectively.

第２保持体３は、第１保持体２に対して、掛止部２８，…を備えていない点を除いては、略同一の構成であり、第１基体部３１１、第１ヒンジ部材３１２及び第１係合部３１３を有する第１挟持部３１と、第２基体部３２１、第２ヒンジ部材３２２及び第２係合部３２３を有する第２挟持部３２と、枢着部３３と、留め部材３４１及び締結手段３４２，３４２を有する取付部３４と、当接部３５１，…及び移動手段３５２，…を有する第１固定手段３５と、先鋭部材３６１，…を有する第２固定手段３６と、連結部３７，３７とを備える。   The second holding body 3 has substantially the same configuration as the first holding body 2 except that the second holding body 3 is not provided with the latching portions 28,..., And the first base portion 311 and the first hinge member 312. And the first clamping part 31 having the first engaging part 313, the second base part 321, the second clamping part 32 having the second hinge member 322 and the second engaging part 323, the pivoting part 33, and the fastening A mounting portion 34 having a member 341 and fastening means 342, 342, a first fixing means 35 having a contact portion 351, ... and a moving means 352, ..., a second fixing means 36 having sharp members 361, ... Connecting portions 37 and 37 are provided.

各接続体４は、第１保持体２と第２保持体３とを接続することで、第１保持体２と第２保持体３とが所定距離以上離反するのを防止するように構成されている。さらに、各接続体４は、剛性を有するリンク部材４１〜４４を複数（本実施形態において四つ）備え、立木１００の上方部位１０３が転倒する際に上方部位１０３の下端部を中心に回動するように構成されている。   Each connection body 4 is configured to prevent the first holding body 2 and the second holding body 3 from separating from each other by a predetermined distance or more by connecting the first holding body 2 and the second holding body 3. ing. Furthermore, each connection body 4 includes a plurality of rigid link members 41 to 44 (four in this embodiment), and rotates around the lower end portion of the upper portion 103 when the upper portion 103 of the standing tree 100 falls. Is configured to do.

各リンク部材４１〜４４は、長尺で且つ平板状に形成される。また、各リンク部材４１〜４４は、平面状の表面が互いに平行となるように配置されると共に、表面と直交する方向を中心に回転可能に互いに連結されている。具体的には、第１保持体２及びリンク部材４１、リンク部材４１〜４４同士、並びにリンク部材４４及び第２保持体３は、軸心方向が同一方向となるように配置される各軸体４５〜４９を介して、それぞれ同一方向を中心に回転可能に連結されている。   Each link member 41-44 is long and is formed in a flat plate shape. Further, the link members 41 to 44 are arranged so that the planar surfaces are parallel to each other, and are connected to each other so as to be rotatable around a direction orthogonal to the surface. Specifically, the first holding body 2 and the link member 41, the link members 41 to 44, and the link member 44 and the second holding body 3 are arranged so that the axial directions are the same direction. Via 45-49, it connects so that it can rotate centering on the same direction, respectively.

より具体的には、第１リンク部材４１は、一端部が第１保持体２の連結部２７に第１軸体４５を介して枢着されると共に、他端部が第２リンク部材４２の一端部に第２軸体４６を介して枢着され、第２リンク部材４２は、他端部が第３リンク部材４３の一端部に第３軸体４７を介して枢着され、第３リンク部材４３は、他端部が第４リンク部材４８の一端部に第４軸体４８を介して枢着され、第４リンク部材４４は、他端部が第２保持体３の連結部３７に第５軸体４９を介して枢着されている。   More specifically, one end of the first link member 41 is pivotally attached to the connecting portion 27 of the first holding body 2 via the first shaft body 45, and the other end of the first link member 41 is the second link member 42. The other end of the second link member 42 is pivotally attached to one end of the third link member 43 via the third shaft 47 and is pivotally attached to one end via the second shaft 46. The other end of the member 43 is pivotally attached to one end of the fourth link member 48 via the fourth shaft body 48, and the other end of the fourth link member 44 is connected to the connecting portion 37 of the second holding body 3. The fifth shaft body 49 is pivotally attached.

各位置決め手段５は、第１保持体２の掛止部２８と何れかの軸体（本実施形態においては第３軸体）４７とに跨って掛止される。また、各位置決め手段５は、長さを調整可能に構成され、各接続体４を所望の状態で位置決めさせる。そして、各位置決め手段５は、立木１００の上方部位１０３が転倒する際に、転倒に伴って受ける外力により、伸長したり、又は、破断したり、或いは、軸体４７から外れることで、上方部位１０３が転倒する障害とはならないように構成されている。   Each positioning means 5 is hooked across the hooking portion 28 of the first holding body 2 and any shaft body (third shaft body in the present embodiment) 47. Moreover, each positioning means 5 is comprised so that adjustment of length is possible, and positions each connection body 4 in a desired state. Then, each positioning means 5 is extended or broken by the external force received in association with the fall when the upper portion 103 of the standing tree 100 falls, or is separated from the shaft body 47, so that the upper portion 103 is configured not to be an obstacle to fall.

本実施形態に係る伐採補助具１の構成については以上の通りであり、次に、本実施形態に係る伐採補助具１の立木１００への装着方法及び伐採補助具１を用いた伐採方法について説明する。   The configuration of the logging assisting tool 1 according to the present embodiment is as described above. Next, a method for attaching the logging assisting tool 1 according to the present embodiment to the standing tree 100 and a logging method using the logging assisting tool 1 will be described. To do.

まず、図４に示すように、立木１００の外周に亘ってパッキン６を配置した上で、第１保持体２を立木１００の外方に配置させる。そして、枢着部２３により、各基体部２１１，２２１を内方（図４（ａ）のＣ矢印方向）に向けて回転させて、パッキン６を介して立木１００に押し当てる。   First, as shown in FIG. 4, after the packing 6 is disposed over the outer periphery of the standing tree 100, the first holding body 2 is disposed outside the standing tree 100. Then, the base portions 211 and 221 are rotated inwardly (in the direction of arrow C in FIG. 4A) by the pivot attachment portion 23, and pressed against the standing tree 100 via the packing 6.

次に、第１ヒンジ部材２１２を介して、第１係合部２１３を内方（図４（ａ）のＤ矢印方向）に向けて回転させて、その後に、第２ヒンジ部材２２２を介して、第２係合部２２３を内方（図４（ａ）のＥ矢印方向）に向けて回転させる。このとき、留め部材２４１が第２係合部２２３の貫通孔２２３ｂに挿通可能な状態（図４（ａ）の状態）であるため、留め部材２４１及び各第１螺子部材２４２ａが第２係合部２２３の貫通孔２２３ｂに挿通される。   Next, the first engagement portion 213 is rotated inwardly (in the direction of arrow D in FIG. 4A) via the first hinge member 212, and thereafter, via the second hinge member 222. The second engagement portion 223 is rotated inward (in the direction of arrow E in FIG. 4A). At this time, since the fastening member 241 is in a state where it can be inserted into the through hole 223b of the second engaging portion 223 (the state shown in FIG. 4A), the fastening member 241 and each first screw member 242a are in the second engagement. The portion 223 is inserted through the through hole 223b.

そして、留め部材２４１の先端部を略９０°（図４（ｂ）のＦ矢印方向に）回転させると、留め部材２４１が第２係合部２２３を係止して抜け止め可能な状態（図４（ｂ）の状態）となり、各係合部２１３，２２３同士を仮留めできる。そして、各第２螺子部材２４２ｂを各第１螺子部材２４２ａの先端部から内方（図４（ｂ）のＧ矢印方向）に向けて螺合させることで、貫通孔２２３ｂよりも大きい第２螺子部材２４２ｂが第２係合部２２３を係止するため、各係合部２１３，２２３同士を締結して係合する状態で維持させる。   Then, when the front end portion of the fastening member 241 is rotated by approximately 90 ° (in the direction of arrow F in FIG. 4B), the fastening member 241 can lock the second engagement portion 223 and prevent it from coming off (see FIG. 4 (b)), and the engaging portions 213 and 223 can be temporarily fastened. Then, each second screw member 242b is screwed inwardly (in the direction of arrow G in FIG. 4B) from the tip of each first screw member 242a, so that the second screw larger than the through hole 223b. Since the member 242b locks the second engagement portion 223, the engagement portions 213 and 223 are fastened and maintained in an engaged state.

また、各移動手段２５２を各挟持部２１，２２と螺合させることで、当接部２５１の内周面が各挟持部２１，２２の内周面と面一の状態から、当接部２５１を内方（図４（ｂ）のＨ方向）に向けて移動させる。これにより、各当接部２５１が立木１００を径方向で押圧するため、第１固定手段２５が第１保持体２を立木１００に強固に固定させる。   Further, by screwing each moving means 252 with each holding part 21, 22, the inner peripheral surface of the contact part 251 is flush with the inner peripheral surface of each holding part 21, 22. Is moved inward (H direction in FIG. 4B). Thereby, since each contact part 251 presses the standing tree 100 in radial direction, the 1st fixing means 25 fixes the 1st holding body 2 to the standing tree 100 firmly.

さらに、各先鋭部材２６１を各挟持部２１，２２と螺合させることで、各先鋭部材２６１を内方（図４（ｂ）のＩ方向）に向けて移動させる。これにより、各先鋭部材２６１の先端部が径方向から立木１００に突き刺さるため、第２固定手段２６が第１保持体２を立木１００に強固に固定させる。なお、続いて、第２保持体３も、第１保持体２と同様に、立木１００を保持するようにして立木１００に固定させる。   Furthermore, each sharp member 261 is screwed into each clamping part 21 and 22 to move each sharp member 261 inward (I direction in FIG. 4B). Thereby, since the front-end | tip part of each sharp member 261 pierces the standing tree 100 from radial direction, the 2nd fixing means 26 fixes the 1st holding body 2 to the standing tree 100 firmly. Subsequently, similarly to the first holding body 2, the second holding body 3 is also fixed to the standing tree 100 so as to hold the standing tree 100.

そして、図５（ａ）に示すように、立木１００の一方の側方側に受け口１０１を形成するために、各位置決め手段５を、各ヒンジ部材２１２，２２２側の掛止部２８と第３軸体４７とに跨って掛止させる。このとき、各位置決め手段５が四つのリンク部材４１〜４４の中間部である第３軸体４７を支持することになるため、各リンク部材４１〜４４の位置が一定に維持される。したがって、各接続体４が受け口１０１を形成するのに障害とならない。   Then, as shown in FIG. 5 (a), in order to form the receiving port 101 on one side of the standing tree 100, each positioning means 5 is connected to the latching portion 28 on each hinge member 212, 222 side and the third. It is straddled across the shaft body 47. At this time, since each positioning means 5 supports the third shaft body 47 that is an intermediate part of the four link members 41 to 44, the positions of the link members 41 to 44 are maintained constant. Therefore, it does not become an obstacle for each connecting body 4 to form the receiving port 101.

次に、図５（ｂ）に示すように、立木１００の他方の側方側に追い口１０２を形成するために、各位置決め手段５を、枢着部２３側の掛止部２８と第３軸体４７とに跨って掛止させる。このときも、各位置決め手段５が四つのリンク部材４１〜４４の中間部である第３軸体４７を支持することになるため、各リンク部材４１〜４４の位置が一定に維持される。したがって、各接続体４が追い口１０２を形成するのに障害とならない。   Next, as shown in FIG. 5B, in order to form the additional opening 102 on the other side of the stand 100, each positioning means 5 is connected to the latching portion 28 on the pivot attachment portion 23 side and the third portion. It is straddled across the shaft body 47. Also at this time, since each positioning means 5 supports the third shaft body 47 that is an intermediate part of the four link members 41 to 44, the positions of the link members 41 to 44 are maintained constant. Therefore, it does not become an obstacle for each connecting body 4 to form the follower 102.

そして、立木１００に追い口１０２を形成していくと、図１に示すように、立木１００を横方向で完全に切断させる前に、立木１００の上方部位１０３が自身の重力により下端部（受け口１０１と追い口１０２との間）を中心に（図１のＡ矢印方向で）回動しながら転倒する。このとき、第１保持体２及びリンク部材４１、リンク部材４１〜４４同士、並びにリンク部材４４及び第２保持体３を連結する各軸体４５〜４９が同一方向で配置されているため、立木１００の上方部位１０３を所望の方向に転倒させることができる。   Then, when the follower 102 is formed in the standing tree 100, as shown in FIG. 1, before the standing tree 100 is completely cut in the lateral direction, the upper portion 103 of the standing tree 100 has its lower end (receiving port) due to its own gravity. 101 and the follower 102) (turning in the direction of arrow A in FIG. 1) and turning over. At this time, the first holding body 2 and the link member 41, the link members 41 to 44, and the shaft bodies 45 to 49 connecting the link member 44 and the second holding body 3 are arranged in the same direction. The upper part 103 of 100 can be tumbled in a desired direction.

さらに、立木１００の上方部位１０３が転倒した勢いで立木１００の下方部位１０４から離反するように（図１のＢ矢印方向）に移動しようとする。このとき、接続体４が第１保持体２と第２保持体３とを接続しているため、第１保持体２と第２保持体３とが所定距離以上離反するのを防止でき、その結果、立木１００の上方部位１０３が下方部位１０４から所定距離以上離反するのを防止できる。   Furthermore, the upper part 103 of the standing tree 100 tries to move away from the lower part 104 of the standing tree 100 (in the direction of arrow B in FIG. 1) with the momentum of falling. At this time, since the connection body 4 connects the first holding body 2 and the second holding body 3, it is possible to prevent the first holding body 2 and the second holding body 3 from separating apart by a predetermined distance or more. As a result, it is possible to prevent the upper portion 103 of the standing tree 100 from separating from the lower portion 104 by a predetermined distance or more.

以上より、本実施形態に係る伐採補助具１によれば、第１保持体２が立木１００の上方部位１０３を保持すると共に、第２保持体３が立木１００の下方部位１０４を保持する。そして、各接続体４が第１保持体２と第２保持体３とを接続するため、第１保持体２と第２保持体３とが所定距離以上離反するのを防止でき、その結果、立木１００を側方から切断し、立木１００の上方部位１０３が転倒した後に所定距離以上移動するのを防止できる。   As described above, according to the logging assist tool 1 according to the present embodiment, the first holding body 2 holds the upper part 103 of the standing tree 100 and the second holding body 3 holds the lower part 104 of the standing tree 100. And since each connection body 4 connects the 1st holding body 2 and the 2nd holding body 3, it can prevent that the 1st holding body 2 and the 2nd holding body 3 leave | separate more than predetermined distance, As a result, It is possible to prevent the standing tree 100 from being cut from the side, and the upper portion 103 of the standing tree 100 from moving over a predetermined distance after falling down.

さらに、立木１００の上方部位１０３が転倒する際に上方部位１０３の下端部を中心に回動するように、各接続体４が第１保持体２と第２保持体３とを接続している。したがって、立木１００の上方部位１０３を転倒させるのに、立木１００の上方部位１０３を持ち上げることが必須の要件ではなくなり、しかもこれにより、立木１００を横方向で完全に切断させておくことが必須の要件ではなくなるため、伐採作業を簡素化することができる。   Furthermore, each connection body 4 connects the first holding body 2 and the second holding body 3 so that the upper portion 103 of the standing tree 100 turns around the lower end portion of the upper portion 103 when the upper portion 103 falls. . Therefore, in order to overturn the upper part 103 of the standing tree 100, it is not an essential requirement to lift the upper part 103 of the standing tree 100. In addition, it is essential that the standing tree 100 is completely cut in the lateral direction. Since it is no longer a requirement, logging operations can be simplified.

また、本実施形態に係る伐採補助具１によれば、接続体４には、剛性を有するリンク部材４１〜４４が複数設けられている。そして、第１保持体２及びリンク部材４１、リンク部材４１〜４４同士、並びにリンク部材４４及び第２保持体３が各軸体４５〜４９を介してそれぞれ同一方向を中心に回転可能に連結されているため、立木１００を切断するのに伴って、受け口１０１側が徐々に縮むことで、第１保持体２と第２保持体３とが相対的に徐々に変位しても、各リンク部材４１〜４４がそれに追従して変位できる。   Moreover, according to the felling assistance tool 1 which concerns on this embodiment, the connection body 4 is provided with multiple link members 41 to 44 having rigidity. The first holding body 2 and the link member 41, the link members 41 to 44, and the link member 44 and the second holding body 3 are connected to each other so as to be rotatable about the same direction via the shaft bodies 45 to 49, respectively. Therefore, even if the first holding body 2 and the second holding body 3 are relatively gradually displaced by gradually shrinking the receiving port 101 side as the standing tree 100 is cut, each link member 41 ˜44 can be displaced accordingly.

さらに、各リンク部材４１〜４４が回転中心の方向（各軸体４５〜４９の軸心方向）と直交する面に沿って回転することになるため、立木１００の上方部位１０３を当該回転中心と同一方向を中心に回動することができる。したがって、立木１００を側方から切断し、立木１００の上方部位１０３を所望の方向に転倒させることができる。   Furthermore, since each link member 41-44 rotates along a plane orthogonal to the direction of the rotation center (the axial center direction of each shaft body 45-49), the upper part 103 of the tree 100 is defined as the rotation center. It can be rotated around the same direction. Therefore, the standing tree 100 can be cut from the side, and the upper portion 103 of the standing tree 100 can be turned over in a desired direction.

また、本実施形態に係る伐採補助具１によれば、離間して設けられる一対の接続体４，４が立木１００を介在して配置される。これにより、両側に配置された接続体４，４により、立木１００が転倒する方向を制御することになるため、立木１００を側方から切断し、立木１００の上方部位１０３を所望の方向に転倒させるのを確実に制御することができる。   Moreover, according to the felling assistance tool 1 which concerns on this embodiment, a pair of connection bodies 4 and 4 provided spaced apart are arrange | positioned through the standing tree 100. FIG. As a result, the direction in which the standing tree 100 falls is controlled by the connectors 4 and 4 arranged on both sides. Therefore, the standing tree 100 is cut from the side and the upper portion 103 of the standing tree 100 falls in a desired direction. Can be reliably controlled.

なお、本発明に係る伐採補助具は、上記した実施の形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。また、下記する各種の変更例に係る構成や方法等を任意に選択して、上記した実施形態に係る構成や方法等に採用してもよいことは勿論である。   In addition, the felling assistance tool which concerns on this invention is not limited to above-described embodiment, Of course, in the range which does not deviate from the summary of this invention, a various change can be added. Moreover, it is needless to say that configurations, methods, and the like according to various modifications described below may be arbitrarily selected and employed in the configurations, methods, and the like according to the above-described embodiments.

例えば、上記実施形態に係る伐採補助具１においては、接続体４が四つのリンク部材４１〜４４を備える場合を説明したが、斯かる場合に限られず、接続体は、一つ〜三つのリンク部材を備える場合でもよく、また、四つ以上のリンク部材を備える場合でもよい。さらには、接続体は、リンク部材を備えていない場合でもよい。ここで、接続体がリンク部材を一つ備える場合の例を図６に示し、接続体がリンク部材を備えていない場合の例を図７に示す。   For example, in the logging assist tool 1 according to the above-described embodiment, the case where the connection body 4 includes the four link members 41 to 44 has been described. However, the connection body is not limited to this, and the connection body includes one to three links. It may be provided with a member, and may be provided with four or more link members. Furthermore, the connection body may not include a link member. Here, an example in which the connection body includes one link member is illustrated in FIG. 6, and an example in which the connection body does not include the link member is illustrated in FIG. 7.

図６に示す伐採補助具１０は、立木１００の上方部位１０３を保持する第１保持体２０と、立木１００の下方部位１０４を保持する第２保持体３０と、第１接続体２０と第２接続体３０とを接続する一対の接続体４０，４０とを備える。そして、各接続体４０は、剛性を有するリンク部材４１０を一つ備える。また、リンク部材４１０は、第１保持体２０に、連結軸４２０を中心に回転可能に連結される。   The logging assisting tool 10 shown in FIG. 6 includes a first holding body 20 that holds the upper part 103 of the tree 100, a second holding body 30 that holds the lower part 104 of the tree 100, the first connecting body 20, and the second A pair of connection bodies 40, 40 that connect the connection body 30 is provided. Each connection body 40 includes one link member 410 having rigidity. The link member 410 is coupled to the first holding body 20 so as to be rotatable about the coupling shaft 420.

第２保持体３０は、各接続体４０と連結される連結部３７０，３７０を備える。そして、各連結部３７０は、リンク部材４１０を収容する連結部本体３７０ａと、連結軸４２０と直交する面に沿ってリンク部材４１０を案内する案内部３７０ｂ，３７０ｂと、第１保持体２０と第２保持体３０とが所定距離以上離反するのを防止すべく、リンク部材４１０の被係止部４３０を係止可能な係止部３７０ｃとを備える。   The second holding body 30 includes connecting portions 370 and 370 that are connected to the connection bodies 40. Each connecting portion 370 includes a connecting portion main body 370 a that houses the link member 410, guide portions 370 b and 370 b that guide the link member 410 along a plane orthogonal to the connecting shaft 420, the first holding body 20, and the first holding body 20. 2 In order to prevent the holding body 30 from separating a predetermined distance or more, a locking portion 370c capable of locking the locked portion 430 of the link member 410 is provided.

なお、連結部本体３７０ａは、立木１００が転倒する側（受け口１０１側）の側方と、上方と、下方とが開放されて形成されている。また、図６に係る構成に限られず、第１保持体に、リンク部材を案内する案内部と、リンク部材を係止する係止部が設けられ、第２保持体に、リンク部材を回転可能に連結するための連結軸が設けられる場合でもよい。   In addition, the connection part main body 370a is formed in such a manner that the side, the upper side, and the lower side of the side on which the standing tree 100 falls (the receiving port 101 side) are opened. Moreover, the structure which concerns on FIG. 6 is not restricted, The guide part which guides a link member and the latching | locking part which latches a link member are provided in the 1st holding body, A link member can be rotated in a 2nd holding body There may be a case where a connecting shaft for connecting to is provided.

斯かる構成の伐採補助具１０によれば、各接続体４０には、剛性を有するリンク部材４１０が一つ設けられている。そして、立木１００を切断するのに伴って、受け口１０１側が徐々に縮むことで、第１保持体２０と第２保持体３０とが相対的に変位しても、リンク部材４１０が、第１保持体２０と連結される連結軸４２０を中心として回転すると共に、連結軸４２０と直交する面に沿って第３保持体３０の案内部３７０ｂに案内されることで、追従して変位できる。   According to the logging assisting tool 10 having such a configuration, each connection body 40 is provided with one rigid link member 410. Then, as the standing tree 100 is cut, the receiving port 101 side gradually contracts, so that the link member 410 is kept in the first holding position even if the first holding body 20 and the second holding body 30 are relatively displaced. While rotating about the connecting shaft 420 connected to the body 20 and being guided by the guide portion 370b of the third holding body 30 along a plane orthogonal to the connecting shaft 420, it is possible to follow and displace.

また、リンク部材４１０が連結軸４２０の軸心方向と直交する面に沿って変位することになるため、立木１００の上方部位１０３を連結軸４２０の軸心方向と直交する面に沿って回動させることができ、その結果、立木１００を側方から切断し、上方部位１０３を所望の方向に転倒させることができる。さらに、第１保持体２０と第２保持体３０とが所定距離以上離反しようとすると、係止部３７０ｃがリンク部材４１０の被係止部４３０を係止するため、第１保持体２０と第２保持体３０とが所定距離以上離反するのを防止できる。   Further, since the link member 410 is displaced along a plane orthogonal to the axial direction of the connecting shaft 420, the upper portion 103 of the standing tree 100 is rotated along a plane orthogonal to the axial direction of the connecting shaft 420. As a result, the standing tree 100 can be cut from the side, and the upper portion 103 can be turned over in a desired direction. Further, when the first holding body 20 and the second holding body 30 are separated from each other by a predetermined distance or more, the locking portion 370c locks the locked portion 430 of the link member 410. 2 It is possible to prevent the holding body 30 from separating more than a predetermined distance.

なお、図６に示す伐採補助具１０においては、立木１００に受け口１０３を形成した後に、立木１００に装着される必要がある。また、第１保持体２０には、上記実施形態に係る第１保持体２と異なり、位置決め手段５を掛止するための掛止部２８が存在していない。   In addition, in the logging assisting tool 10 shown in FIG. 6, it is necessary to attach the standing tree 100 after forming the receiving port 103 in the standing tree 100. Further, unlike the first holding body 2 according to the above-described embodiment, the first holding body 20 does not have a hooking portion 28 for hooking the positioning means 5.

図７に示す伐採補助具１１，１２は、第１接続体２００と第２接続体３００とを接続すべく、可撓性を有する接続体４０１（４０２）を備える。具体的には、図７（ａ）に示す伐採補助具１１は、環状の金属が連なって形成される長尺体（チェーン）を有する接続体４０１を備え、図７（ｂ）に示す伐採補助具１２は、紐状体からなる長尺体（ワイヤ、ロープ）を有する接続体４０２を備える。   The logging aids 11 and 12 shown in FIG. 7 include a flexible connection body 401 (402) to connect the first connection body 200 and the second connection body 300. Specifically, the logging assisting tool 11 shown in FIG. 7A includes a connecting body 401 having a long body (chain) formed by continuous annular metals, and the logging assisting tool shown in FIG. 7B. The tool 12 includes a connection body 402 having a long body (wire, rope) made of a string-like body.

また、上記実施形態に係る伐採補助具１においては、接続体４，４を一対備える場合を説明したが、斯かる場合に限られず、例えば、接続体４は、一つ備える場合でもよい。   Moreover, in the logging assistance tool 1 which concerns on the said embodiment, although the case where a pair of connection bodies 4 and 4 was provided was demonstrated, it is not restricted to such a case, For example, the case where one connection body 4 is provided may be sufficient.

また、上記実施形態に係る伐採補助具１を用いて伐採方法においては、立木１００の各側方に二つの切欠（受け口１０１及び追い口１０２）を形成する場合を説明したが、斯かる場合に限られず、例えば、立木１００の側方に一つの切欠を形成して、立木１００の上方部位１０３を転倒させて伐採する場合でもよい。   Moreover, in the logging method using the logging assisting tool 1 according to the above embodiment, the case where two notches (the receiving port 101 and the additional port 102) are formed on each side of the standing tree 100 has been described. For example, one cutout may be formed on the side of the standing tree 100, and the upper portion 103 of the standing tree 100 may be fallen and fell.

１，１０，１１，１２…伐採補助具、２，２０，２００…第１保持体、３，３０，３００…第２保持体、４，４０，４０１，４０２…接続体、４１，４２，４３，４４，４１０…リンク部材、１００…立木、１０３…立木の上方側の部位（上方部位）、１０４…立木の下方側の部位（下方部位）、３７０ｂ…案内部、３７０ｃ…係止部   DESCRIPTION OF SYMBOLS 1,10,11,12 ... Logging aid, 2, 20, 200 ... 1st holding body, 3, 30, 300 ... 2nd holding body, 4, 40, 401, 402 ... Connection body, 41, 42, 43 , 44, 410 ... Link member, 100 ... Standing tree, 103 ... Upper part of the standing tree (upper part), 104 ... Lower part of the standing tree (lower part), 370b ... Guide part, 370c ... Locking part

Claims (4)

立木を側方から切断し、立木の上方側の部位を転倒させて伐採する際に用いられる伐採補助具において、
立木の上方側の部位を保持する第１保持体と、
立木の下方側の部位を保持する第２保持体と、
第１保持体と第２保持体とが所定距離以上離反するのを防止すると共に、立木の上方側の部位が転倒する際に上方側の部位の下端部を中心に回動すべく、第１保持体と第２保持体とを接続する接続体とを備えることを特徴とする伐採補助具。 In the cutting aid used when cutting the tree from the side and felling the upper part of the tree to fell,
A first holding body for holding the upper part of the standing tree;
A second holding body for holding a lower part of the standing tree;
The first holding body and the second holding body are prevented from separating by a predetermined distance or more, and when the upper part of the standing tree falls, the first holding part is rotated around the lower end of the upper part. A logging aid, comprising: a connecting body that connects the holding body and the second holding body. 接続体は、剛性を有するリンク部材を複数備え、
第１保持体及びリンク部材、リンク部材同士、並びにリンク部材及び第２保持体は、それぞれ同一方向を中心に回転可能に連結される請求項１に記載の伐採補助具。 The connection body includes a plurality of rigid link members,
The felling assistance tool according to claim 1, wherein the first holding body and the link member, the link members, and the link member and the second holding body are coupled so as to be rotatable about the same direction. 接続体は、剛性を有するリンク部材を一つ備え、
リンク部材は、一方の保持体に、連結軸を中心に回転可能に連結され、
他方の保持体は、連結軸と直交する面に沿ってリンク部材を案内する案内部と、第１保持体と第２保持体とが所定距離以上離反するのを防止すべく、リンク部材を係止可能な係止部とを備える請求項１に記載の伐採補助具。 The connection body includes one link member having rigidity,
The link member is connected to one of the holding bodies so as to be rotatable about the connecting shaft,
The other holding body engages the link member so as to prevent the guide portion that guides the link member along a plane orthogonal to the connecting shaft, and the first holding body and the second holding body from separating apart by a predetermined distance or more. The logging assisting tool according to claim 1, further comprising a stop portion that can be stopped. 接続体は、立木を介在して配置されるべく、離間して一対設けられる請求項２又は３に記載の伐採補助具。   The felling assisting tool according to claim 2 or 3, wherein the connection body is provided as a pair so as to be disposed with a standing tree interposed therebetween.
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10121475A (en) * 1996-10-18 1998-05-12 Tohoku Tsushin Kensetsu Kk Method and device for extracting wooden pole
JP2006063730A (en) * 2004-08-30 2006-03-09 West Japan Railway Co Columnar object dismantling method and device
JP3127740U (en) * 2006-09-01 2006-12-14 音二 城内 Standing cutting aid

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10121475A (en) * 1996-10-18 1998-05-12 Tohoku Tsushin Kensetsu Kk Method and device for extracting wooden pole
JP2006063730A (en) * 2004-08-30 2006-03-09 West Japan Railway Co Columnar object dismantling method and device
JP3127740U (en) * 2006-09-01 2006-12-14 音二 城内 Standing cutting aid

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