JP2018038310A

JP2018038310A - Tree-climbing scaffold

Info

Publication number: JP2018038310A
Application number: JP2016174024A
Authority: JP
Inventors: 小川　哲史; Tetsushi Ogawa; 哲史小川; 寿牧; Hisashi Maki; 晃義小田; Akiyoshi Oda; 順次河原; Junji Kawahara; 聡明日高; Toshiaki Hidaka; 秀則小清水; Hidenori Koshimizu; 雅規武用; Masaki Buyo; 浩史國塩; Hiroshi Kunishio
Original assignee: Chugoku Electric Power Co Inc
Current assignee: Chugoku Electric Power Co Inc
Priority date: 2016-09-06
Filing date: 2016-09-06
Publication date: 2018-03-15
Anticipated expiration: 2036-09-06
Also published as: JP6866592B2

Abstract

PROBLEM TO BE SOLVED: To provide tree-climbing scaffolds capable of installing readily even to a natural forest tree which is not pruned, the tree-climbing scaffolds also being excellent in safety at the time of use.SOLUTION: A tree-climbing scaffold 1 of the present invention has a holding member 2 which is installed so as to be substantially parallel to the height direction of a tree J and provided with a step-connecting portion 6 in the vicinity of its upper end, a step 3 whose one end is held by the holding member 2 so as to lock a hooked portion 15 on a connecting tool 9, and a logging pulling rope 4 whose both ends are annularly formed and a connecting rope 5.SELECTED DRAWING: Figure 1

Description

本発明は、線下樹木の先端伐採時に用いられる木登り足場に係り、特に、造林だけでなく自然林にも適用することが可能な木登り足場に関する。 The present invention relates to a tree climbing scaffold used at the time of cutting off the tip of a line tree, and more particularly to a tree climbing scaffold that can be applied not only to afforestation but also to a natural forest.

電線に樹木の枝が接触しないように、その先端を伐採したり、植林された樹木の枝打ちを行ったりする作業では、作業者が木に登る必要がある。しかし、自然林は造林と異なり、歪な形状をしている場合が多いため、梯子等を立て掛けて使用することは難しい。 In order to prevent the branches of the tree from coming into contact with the electric wire, the operator needs to climb the tree when cutting the tip of the tree or pruning the planted tree. However, unlike afforestation, natural forests often have a distorted shape, so it is difficult to use a ladder or the like while standing.

そのため、従来、梯子よりも安全に木登りを行うことができる器具が求められており、これまでにいろいろな構造の器具が提案されている。例えば、特許文献１には、「２点係止型の墜落防止ロープとチョーク台付ベルトを備えた樹木昇降補助具とそれを用いた樹木昇降方法」という名称で、樹木の昇降方法とそれに用いる補助具に関する発明が開示されている。
この発明に係る樹木昇降補助具は、先端にフックが取り付けられた墜落防止ロープと、一端にアイ部が設けられ他端に環部が設けられたチョーク台付ベルトと、樹木に固定するためのロープ又はベルトを有するステップを備えた構造となっている。
このような構造であれば、安全帯のフックを掛け替える際に無胴状態となることを防止できる。また、軽量で嵩張らないため、持ち運びが容易である。 For this reason, there has been a demand for an apparatus that can climb trees more safely than a ladder, and various structures have been proposed so far. For example, Patent Document 1 has a name of “a tree lifting support tool including a two-point locking type fall prevention rope and a belt with a choke stand and a tree lifting method using the same”, and a tree lifting method and the same. An invention relating to an auxiliary tool is disclosed.
A tree raising / lowering assisting tool according to the present invention includes a fall-preventing rope having a hook attached to the tip, a belt with a choke base provided with an eye part at one end and a ring part at the other end, and for fixing to a tree. The structure includes a step having a rope or belt.
With such a structure, it is possible to prevent the body from becoming involuntary when changing the hook of the safety belt. Moreover, since it is lightweight and not bulky, it is easy to carry.

一方、特許文献２には、「柱状体昇降具」という名称で、安全帯と連携させることで墜落防止機能が発揮される昇降具に関する発明が開示されている。
この発明では、昇降具本体が長尺の主ベルトと、これに結合された複数の締め付けベルトと、複数の足場部材によって構成されるとともに、作業者の安全帯に結合され未装着の昇降具本体を保持するホルダを備えたことを特徴としている。
このような構造によれば、作業者は、ホルダから連結部材を外すごとに繰り出される１スパンの主ベルトを足場部材とともに柱状体の上部に締め付けベルトを用いて固定するようにして、昇降具を柱状体に取り付けることができる。このとき、作業者は、柱状体に固定されている主ベルトに対して、ホルダに係止されている連結部材を介して結合された状態になる。このように、本発明では、昇降具が安全具としても機能するため、作業者が足場部材を踏み外したとしても墜落する心配がないという効果を有している。 On the other hand, Patent Document 2 discloses an invention related to an elevating tool having a name “columnar body elevating tool” and capable of exhibiting a fall prevention function in cooperation with a safety belt.
In this invention, the lifting / lowering tool main body is constituted by a long main belt, a plurality of fastening belts coupled thereto, and a plurality of scaffold members, and the lifting / lowering tool main body which is coupled to the worker's safety belt and is not mounted It is characterized by having a holder for holding the.
According to such a structure, the operator fixes the lifting / lowering tool by fixing the main belt of one span that is drawn out each time the connecting member is removed from the holder to the upper portion of the columnar body together with the scaffold member using the fastening belt. Can be attached to a columnar body. At this time, the operator is in a state of being coupled to the main belt fixed to the columnar body via a connecting member locked to the holder. Thus, in this invention, since the lifting / lowering tool functions also as a safety tool, even if an operator steps off the scaffold member, there is an effect that there is no fear of falling.

また、特許文献３には、「枝打ち用木登り器具」という名称で、ロープと金属製の丸棒からなる木登り具に関する発明が開示されている。
この発明は、締め付けロープと、その下端に連結された足載部からなる簡単な構造であるため、運搬や取り扱いが容易であることに加え、製造コストが安いという効果を有している。 Patent Document 3 discloses an invention relating to a tree climbing tool comprising a rope and a metal round bar under the name of “branching tree climbing device”.
Since this invention is a simple structure consisting of a tightening rope and a footrest connected to the lower end thereof, it has the effect that it is easy to transport and handle, and has a low manufacturing cost.

特開２０１２−２００３７５号公報JP 2012-200375 A 特開２００６−２３９１８３号公報JP 2006-239183 A 特開２００２−２３３２５４号公報JP 2002-233254 A

特許文献１に記載された発明では、上方へ移動しながら、その都度、ロープやベルトを樹木に固定する必要があるため、設置作業が煩雑であって時間がかかるという課題があった。また、作業者が乗るステップが樹木に巻き付けられたベルトのみで固定される構造であるため、樹木に対してステップを確実に固定することが難しいという課題もあった。 In the invention described in Patent Document 1, since it is necessary to fix a rope and a belt to a tree each time while moving upward, there is a problem that installation work is complicated and takes time. In addition, since the step on which the operator rides is a structure that is fixed only by a belt wound around the tree, there is also a problem that it is difficult to reliably fix the step to the tree.

特許文献２に記載された発明では、特許文献１に記載された発明と同様に、作業者が上方へ移動しながら、樹木に対して昇降具を順次設置していく構造であるため、昇降具の設置に時間を要するという課題があった。また、締め付けベルトのみの固定では主ベルトが足場部材とともにずり落ちてしまうおそれもある。 In the invention described in Patent Document 2, as in the invention described in Patent Document 1, the structure is such that the operator sequentially installs the lifting tools on the tree while moving upward. There was a problem that it took time to set up. In addition, when the fastening belt alone is used, the main belt may slip off together with the scaffold member.

特許文献３に記載された発明は、締め付けロープを立ち木の周面に巻き付けて、交互移動しながら昇降する構造であるため、予め枝打ちされている植林でないと、交互移動に時間がかかるという課題があった。また、立ち木に対して確実に固定できないおそれがあった。 Since the invention described in Patent Document 3 is a structure in which a tightening rope is wound around the circumference of a standing tree and is moved up and down while alternately moving, there is a problem that it takes time to move alternately unless the tree is planted in advance. there were. Moreover, there was a possibility that it could not be securely fixed to the standing tree.

本発明はかかる従来の事情に対処してなされたものであって、枝打ちされていない自然林に対しても容易に設置することが可能であり、しかも使用時の安全性に優れる木登り足場を提供することを目的とする。 The present invention has been made in response to such a conventional situation, and can be easily installed even in a non-branched natural forest, and has a tree climbing scaffold that is excellent in safety during use. The purpose is to provide.

上記目的を達成するため、第１の発明は、樹木の高所に一部が巻回されるようにして使用されるロープと、このロープの一端が上端に連結される保持部材と、この保持部材に基端が保持された状態で水平に設置される踏み板と、を備え、ロープは、他端が踏み板の下方に配置されるように垂設されることを特徴とするものである。 In order to achieve the above object, the first invention provides a rope that is used in such a manner that a part of the rope is wound around the height of a tree, a holding member having one end of the rope connected to the upper end, and the holding And a tread plate installed horizontally with the base end held by the member, and the rope is suspended so that the other end is disposed below the tread plate.

このような構造の木登り足場においては、ロープを操作することにより、保持部材の高さが変化するという作用を有する。また、ロープを介して樹木に吊り下げられた状態で使用される構造であるため、ロープの一部を固定しておくことで、樹木に対して特に固定していなくとも保持部材や踏み板の下方への移動が防止されるという作用を有する。 The tree climbing scaffold having such a structure has an effect that the height of the holding member is changed by operating the rope. In addition, because it is a structure that is used in a state that it is suspended from a tree via a rope, by fixing a part of the rope, even if it is not particularly fixed to the tree, it is below the holding member and footboard It has the effect that movement to is prevented.

また、第２の発明は、第１の発明において、ロープは、踏み板の基端と保持部材の間に挿設され、踏み板は、保持部材と直交するまで回動し、その状態で基端が保持部材と協働してロープを挟持するように、基端が保持部材に対して回動可能に連結されたことを特徴とするものである。
このような構造の木登り足場においては、第１の発明の作用に加えて、踏み板が保持部材と直交するまで回動すると、ロープが踏み板の基端と保持部材によって挟持されることにより、ロープに対して移動不能に固定されるという作用を有する。 In a second aspect based on the first aspect, the rope is inserted between the base end of the tread plate and the holding member, and the tread plate rotates until it is orthogonal to the holding member. The base end is rotatably connected to the holding member so as to clamp the rope in cooperation with the holding member.
In the tree climbing scaffold with such a structure, in addition to the action of the first invention, when the tread plate is rotated until it is orthogonal to the holding member, the rope is clamped by the base end of the tread plate and the holding member. It has the effect of being fixed so that it cannot move.

第３の発明は、第１の発明又は第２の発明において、踏み板の基端に設けられた鉤状部と、この鉤状部が係止する係止手段と、を備え、鉤状部は、踏み板が基端を中心として回動可能に係止手段を介して保持部材に対して着脱可能に連結されることを特徴とするものである。
このような構造の木登り足場においては、第１の発明又は第２の発明の作用に加えて、踏み板を保持部材から取り外すことにより、嵩張らない状態になるという作用を有する。 3rd invention is provided with the hook-shaped part provided in the base end of the footboard in 1st invention or 2nd invention, and the latching means which this hook-shaped part latches, and the hook-shaped part is The tread plate is detachably connected to the holding member via the locking means so as to be rotatable about the base end.
In addition to the effects of the first invention or the second invention, the tree-climbing scaffold having such a structure has an action of becoming unbulky by removing the footboard from the holding member.

第４の発明は、第３の発明において、平面視半円状をなし、係止手段の下方において、側方へ突出するように保持部材の側面に設けられた板バネと、踏み板と保持部材が直交した状態において、先端が連結具と板バネの間に配置された棒状の位置決め具と、を備え、この位置決め具は、踏み板の回動に伴って板バネを弾性変形させながら移動するように踏み板の基端に設置されたことを特徴とするものである。
このような構造を備えた木登り足場では、踏み板と保持部材が直交した状態において、位置決め具の先端の移動が板バネによって阻止され、踏み板の回動が規制される。ただし、この場合でも踏み板に対して逆の方向へ回動させるように力を加えれば、位置決め具の先端は板バネの弾性力に抗して移動する。しかし、そのような力を加えない限り、踏み板が回動することはない。すなわち、第４の発明においては、第３の発明の作用を有することに加え、踏み板が保持部材に対して直交した状態から勝手に回動してしまうおそれがないという作用を有する。 According to a fourth invention, in the third invention, a leaf spring provided on a side surface of the holding member so as to project in a lateral direction below the locking means, and a stepping plate and the holding member. And a rod-shaped positioning tool whose tip is disposed between the coupling tool and the leaf spring, and the positioning tool moves while elastically deforming the leaf spring as the tread plate rotates. It is installed at the base end of the tread board.
In the tree climbing scaffold having such a structure, the movement of the tip of the positioning tool is blocked by the leaf spring in a state where the footboard and the holding member are orthogonal to each other, and the rotation of the footboard is restricted. However, even in this case, if a force is applied to rotate the tread plate in the opposite direction, the tip of the positioning tool moves against the elastic force of the leaf spring. However, unless such a force is applied, the footboard does not rotate. That is, in the fourth invention, in addition to having the action of the third invention, it has an action that there is no possibility that the tread board is arbitrarily rotated from a state orthogonal to the holding member.

第５の発明は、第１の発明乃至第４の発明のいずれかにおいて、ロープは、両端の少なくともいずれか一方が環状に形成され、保持部材は、上端と下端のうちの少なくとも一方がロープを係止可能に鉤状に形成されたことを特徴とするものである。
このような構造の木登り足場においては、第１の発明乃至第４の発明のいずれかの作用に加え、保持部材に対するロープの連結が容易であるという作用を有する。 According to a fifth invention, in any one of the first to fourth inventions, at least one of both ends of the rope is formed in an annular shape, and the holding member has at least one of the upper end and the lower end of the rope. It is formed in a hook shape so that it can be locked.
The tree climbing scaffold having such a structure has an effect that the rope can be easily connected to the holding member in addition to the operation of any one of the first to fourth inventions.

第６の発明は、第１の発明乃至第４の発明のいずれかにおいて、ロープは、両端の少なくともいずれか一方が環状に形成され、保持部材は、ピンによってフックの開口部が開閉される連結金具が上端と下端のうちの少なくとも一方に設けられたことを特徴とするものである。
このような構造の木登り足場においては、第１の発明乃至第４の発明のいずれかの作用に加え、保持部材に対するロープの連結が容易であるという第５の発明と同様の作用を有する。 According to a sixth invention, in any one of the first to fourth inventions, at least one of both ends of the rope is formed in an annular shape, and the holding member is connected so that the opening of the hook is opened and closed by a pin The metal fittings are provided on at least one of the upper end and the lower end.
The tree climbing scaffold having such a structure has the same operation as that of the fifth invention in which the rope can be easily connected to the holding member in addition to the operation of any one of the first to fourth inventions.

第７の発明は、第１の発明乃至第６の発明のいずれかにおいて、樹木の胴部に対して巻回可能な長さを有し、両端が踏み板に連結されたチェーンを備え、このチェーンは少なくともいずれか一方の端部が踏み板に対して着脱可能に連結されたことを特徴とするものである。
このような構造の木登り足場においては、第１の発明乃至第６の発明のいずれかの作用に加え、踏み板が保持部材に取り付けられた状態で樹木の胴部にチェーンを巻回すると、踏み板と保持部材が一体として樹木に対して固定されるという作用を有する。 A seventh invention comprises a chain according to any one of the first to sixth inventions, comprising a chain having a length that can be wound around a trunk of a tree and having both ends connected to a footboard. Is characterized in that at least one end thereof is detachably connected to the tread plate.
In the tree climbing scaffold having such a structure, in addition to the action of any one of the first to sixth inventions, when the chain is wound around the trunk of the tree with the footboard attached to the holding member, And the holding member are integrally fixed to the tree.

第８の発明は、第１の発明乃至第７の発明のいずれかにおいて、踏み板の先端に両端が接続される丸棒からなり、安全帯のフックを掛止可能に形成される把持部を備えたことを特徴とするものである。
このような構造の木登り足場においては、第１の発明乃至第７の発明のいずれかの作用に加え、踏み板に上る際に把持部を手で掴むとバランスをとる動作が容易になるという作用を有する。 According to an eighth invention, in any one of the first invention to the seventh invention, a grip portion is formed of a round bar connected at both ends to the tip of the tread plate, and is formed so as to be capable of hooking a hook of a safety belt. It is characterized by that.
In the tree climbing scaffold having such a structure, in addition to the action of any of the first to seventh inventions, the action of balancing is facilitated by grasping the grasping part by hand when climbing the tread. Have

第１の発明によれば、数珠つなぎのようにして複数個を１本のロープによって吊り下げた場合、樹木に対して個別に固定せずとも、そのロープの一部を固定するだけですべての木登り足場に対して下方への移動を防ぐことができるため、設置作業が容易であり、また、安全性に優れている。さらに、ロープを操作することで、保持部材と踏み板を所望の高さに配置できるため、それらの設置作業を効率よく行うことが可能である。 According to the first invention, when a plurality of pieces are suspended by a single rope like a rosary chain, all of them can be fixed by fixing a part of the rope without fixing them individually to a tree. Since the downward movement with respect to the tree climbing scaffold can be prevented, the installation work is easy and the safety is excellent. Furthermore, since the holding member and the footboard can be arranged at a desired height by operating the rope, it is possible to perform the installation work efficiently.

第２の発明によれば、第１の発明の効果に加え、使用時の安全性に優れるという効果を奏する。 According to the 2nd invention, in addition to the effect of the 1st invention, there exists an effect that it is excellent in safety at the time of use.

第３の発明によれば、第１の発明又は第２の発明の効果に加えて、持ち運びや保管の際の作業性が向上するという効果を奏する。 According to the third invention, in addition to the effects of the first invention or the second invention, there is an effect that workability in carrying and storage is improved.

第４の発明によれば、第３の発明の効果を奏することに加え、設置作業中に踏み板が保持部材に対して直交した状態から勝手に回動してしまうことがないため、当該作業を効率よく行うことができるという効果を奏する。 According to the fourth invention, in addition to producing the effect of the third invention, the tread plate does not rotate freely from the state orthogonal to the holding member during the installation work. There is an effect that it can be performed efficiently.

第５の発明によれば、第１の発明乃至第４の発明のいずれかの効果を奏することに加え、設置する際の作業性が良いという効果がより一層発揮される。 According to the fifth invention, in addition to the effects of any one of the first to fourth inventions, the effect of good workability during installation is further exhibited.

第６の発明によれば、第１の発明乃至第４の発明のいずれかの効果を奏することに加え、設置作業を効率よく行うことができるという第５の発明と同様の効果を奏する。 According to the sixth aspect, in addition to the effects of any one of the first to fourth aspects, the same effect as the fifth aspect that the installation work can be performed efficiently is achieved.

第７の発明によれば、第１の発明乃至第６の発明のいずれかの効果に加え、使用時の安全性に優れるという効果がより一層発揮される。 According to the seventh aspect, in addition to the effect of any one of the first to sixth aspects, the effect of excellent safety during use is further exhibited.

第８の発明によれば、第１の発明乃至第７の発明のいずれかの効果に加え、把持部を手で掴むようにしてバランスをとるとともに、把持部に安全帯のフックを掛けることにより、作業者が踏み板に上る際の安全性がさらに高まるという効果を奏する。 According to the eighth aspect of the invention, in addition to the effects of any one of the first to seventh aspects of the invention, the gripping part is balanced by grasping by hand, and the safety part is hooked to the gripping part to perform the work. There is an effect that the safety when the person climbs the tread board further increases.

本発明の実施の形態に係る木登り足場の実施例を示した側面図である。It is the side view which showed the Example of the tree climbing scaffold based on embodiment of this invention. （ａ）及び（ｂ）はそれぞれ図１に示した木登り足場を構成する保持部材の正面図及び左側面図である。(A) And (b) is the front view and left view of a holding member which respectively comprise the tree climbing scaffold shown in FIG. （ａ）及び（ｂ）はそれぞれ図１に示した木登り足場を構成する踏み板の正面図及び左側面図である。(A) And (b) is the front view and left view of a footboard which comprise the tree climbing scaffold shown in FIG. 1, respectively. （ａ）は図１におけるＡ方向矢視図であり、（ｂ）は図２（ａ）におけるＢ−Ｂ線矢視断面図であり、（ｃ）は同図（ｂ）におけるＣ方向矢視図である。(A) is an A direction arrow view in FIG. 1, (b) is a BB line arrow sectional view in FIG. 2 (a), (c) is a C direction arrow view in FIG. FIG. （ａ）は保持部材に踏み板が取り付けられる様子を示した図であり、（ｂ）及び（ｃ）は位置決め具と板バネの位置関係を示した図である。(A) is a figure which showed a mode that a tread was attached to a holding member, (b) and (c) are the figures which showed the positional relationship of a positioning tool and a leaf | plate spring. 本発明の木登り足場の使用状態の一例を示した図である。It is the figure which showed an example of the use condition of the tree climbing scaffold of this invention.

本発明の木登り足場について図１乃至図６を用いて説明する。なお、以下の説明では、図１に示したように樹木へ実際に取り付けられた状態を想定して、「上端」や「下端」あるいは「上方」や「下方」などの語句を用いている。 The tree climbing scaffold according to the present invention will be described with reference to FIGS. In the following description, terms such as “upper end”, “lower end”, “upper”, and “lower” are used assuming a state where they are actually attached to a tree as shown in FIG.

図１は本発明の木登り足場が樹木に取り付けられた状態の一例を模式的に表した図である。また、図２（ａ）及び図２（ｂ）は図１に示した木登り足場１を構成する保持部材２の正面図及び左側面図であり、それぞれ下端に連結ロープ５が取り付けられた状態を示している。一方、図３（ａ）及び図３（ｂ）は木登り足場１を構成する踏み板３の正面図及び側面図である。なお、図３（ａ）では樹木の輪郭の一部を破線で示している。 FIG. 1 is a diagram schematically showing an example of a state in which the tree climbing scaffold of the present invention is attached to a tree. 2 (a) and 2 (b) are a front view and a left side view of the holding member 2 constituting the tree climbing scaffold 1 shown in FIG. 1, and a state in which a connecting rope 5 is attached to the lower end. Is shown. On the other hand, FIG. 3A and FIG. 3B are a front view and a side view of the footboard 3 constituting the tree climbing scaffold 1. In FIG. 3A, a part of the outline of the tree is indicated by a broken line.

図４（ａ）は図１におけるＡ方向矢視図であり、図４（ｂ）は図２（ａ）におけるＢ−Ｂ線矢視断面図であり、図４（ｃ）は図４（ｂ）におけるＣ方向矢視図である。なお、図４（ａ）では保持部材２と伐採用引きロープ４の位置関係について説明するために保持部材２の上端２ａ付近のみを拡大して示すとともに、踏み板３の図示を省略している。
また、図５（ａ）は保持部材２に踏み板３が取り付けられる様子を模式的に示した図であり、図５（ｂ）及び図５（ｃ）は位置決め具１６と板バネ１０ｂの位置関係を示した図である。なお、図５（ａ）ではチェーン１４の図示を省略している。また、図５（ｂ）及び図５（ｃ）では踏み板３の全体図を省略し、位置決め具１６のみを示している。 4 (a) is a view taken in the direction of arrow A in FIG. 1, FIG. 4 (b) is a cross-sectional view taken along line BB in FIG. 2 (a), and FIG. FIG. In FIG. 4A, only the vicinity of the upper end 2a of the holding member 2 is shown enlarged and the tread plate 3 is not shown in order to explain the positional relationship between the holding member 2 and the felling pulling rope 4.
FIG. 5 (a) is a diagram schematically showing how the tread plate 3 is attached to the holding member 2. FIGS. 5 (b) and 5 (c) show the positional relationship between the positioning tool 16 and the leaf spring 10b. FIG. In addition, illustration of the chain 14 is abbreviate | omitted in Fig.5 (a). 5B and 5C, the overall view of the foot board 3 is omitted, and only the positioning tool 16 is shown.

図１乃至図３に示すように、本発明の木登り足場１は、樹木Ｊに対して、その高さ方向と略平行をなすように設置される保持部材２と、この保持部材２に一端が保持される踏み板３と、両端が環状に形成された伐採用引きロープ４及び連結用ロープ５を備えている。
保持部材２は、合成樹脂又は金属によって帯状に形成された平板材からなり、上端２ａの近傍には踏み板連結部６が設けられており、下端２ｂの近傍には幅広部７，７が両側へ突出するようにそれぞれ設けられている。なお、幅広部７，７は、後述する伐採用引きロープ４を操作して木登り足場１の高さを調節する作業において、保持部材２が長手方向に平行な軸を中心として回転してしまわないように、樹木Ｊに当接して保持部材２の回動を防ぐという機能を有している。 As shown in FIGS. 1 to 3, the tree climbing scaffold 1 of the present invention has a holding member 2 installed so as to be substantially parallel to the height direction of the tree J, and one end of the holding member 2. Is provided, and a felling pulling rope 4 and a connecting rope 5 having both ends formed in an annular shape are provided.
The holding member 2 is made of a flat plate formed in a strip shape with synthetic resin or metal, and is provided with a tread plate connecting portion 6 in the vicinity of the upper end 2a, and wide portions 7 and 7 on both sides in the vicinity of the lower end 2b. Each is provided so as to protrude. In addition, in the operation | work which adjusts the height of the climbing scaffold 1 by operating the logging adoption pulling rope 4 mentioned later and the wide parts 7 and 7, the holding member 2 will rotate centering on the axis | shaft parallel to a longitudinal direction. The holding member 2 has a function of preventing the holding member 2 from rotating by contacting the tree J.

保持部材２の上端２ａには、フック８ａと、フック８ａの基端を軸として回動することでフック８ａの開口部を開閉するピン８ｂと、フック８ａの開口部を閉じる方向へピン８ｂを付勢するバネ８ｄと、上端２ａに設けられた一対の保持具２ｃによって揺動自在に保持されるフック連結具８ｃによって構成された連結金具８が取り付けられている。
一方、保持部材２の下端２ｂの一部は、伐採用引きロープ４や連結ロープ５をそれぞれ係止可能に鉤状に形成されている。
すなわち、保持部材２は上端２ａと下端２ｂに対して伐採用引きロープ４や連結ロープ５が着脱可能に連結される構造となっている。 The upper end 2a of the holding member 2 is provided with a hook 8a, a pin 8b that opens and closes the opening of the hook 8a by rotating around the base end of the hook 8a, and a pin 8b that closes the opening of the hook 8a. A connecting fitting 8 constituted by a spring 8d to be urged and a hook connector 8c that is swingably held by a pair of holders 2c provided at the upper end 2a is attached.
On the other hand, a part of the lower end 2b of the holding member 2 is formed in a bowl shape so that the felling pulling rope 4 and the connecting rope 5 can be locked.
That is, the holding member 2 has a structure in which the felling pulling rope 4 and the connecting rope 5 are detachably connected to the upper end 2a and the lower end 2b.

本発明の木登り足場は、このような構造に限定されるものではない。例えば、保持部材２の下端２ｂは上端２ａのように連結金具８が取り付けられた構造であっても良いし、保持部材２の上端２ａは、連結金具８が取り付けられる代わりに、下端２ｂと同様な構造であっても良い。ただし、どちらの場合であっても、保持部材２の上端２ａや下端２ｂに対して伐採用引きロープ４や連結ロープ５を連結する作業が容易になるため、設置作業の効率が向上するという効果が同様に発揮される。
なお、保持部材２の上端２ａと下端２ｂに連結金具８を用いる場合には、連結した伐採用引きロープ４や連結ロープ５が外れ難いというメリットがある。一方、連結金具８を用いずに、保持部材２の上端２ａを下端２ｂと同じ構造にする場合には、製造コストを安くできるというメリットがある。 The tree climbing scaffold of the present invention is not limited to such a structure. For example, the lower end 2b of the holding member 2 may have a structure in which the connection fitting 8 is attached like the upper end 2a. The upper end 2a of the holding member 2 is the same as the lower end 2b instead of the attachment fitting 8. It may be a simple structure. However, in any case, the work of connecting the felling pulling rope 4 and the connecting rope 5 to the upper end 2a and the lower end 2b of the holding member 2 is facilitated, so that the efficiency of the installation work is improved. Is demonstrated as well.
In addition, when the connection metal fitting 8 is used for the upper end 2a and the lower end 2b of the holding member 2, there is an advantage that the connected felling pulling rope 4 and the connecting rope 5 are not easily detached. On the other hand, when the upper end 2a of the holding member 2 is made the same structure as the lower end 2b without using the connection fitting 8, there is an advantage that the manufacturing cost can be reduced.

踏み板連結部６は、保持部材２の長手方向と平行な貫通孔９ａを有し、保持部材２の両側にそれぞれ設置された一対のブロック状の連結具９，９と、連結具９，９の下方において保持部材２の両側面に設けられた固定具１０ａ，１０ａと、平面視半円状をなし、保持部材２の両側へ突出するように固定具１０ａ，１０ａにそれぞれ取り付けられた一対の板バネ１０ｂ，１０ｂによって構成されている。 The tread board connecting portion 6 has a through hole 9 a parallel to the longitudinal direction of the holding member 2, and a pair of block-like connecting tools 9, 9 respectively installed on both sides of the holding member 2, A pair of plates 10a and 10a provided on both side surfaces of the holding member 2 below and a pair of plates that are semicircular in plan view and are respectively attached to the fixing devices 10a and 10a so as to protrude to both sides of the holding member 2 It is constituted by springs 10b and 10b.

踏み板３は、滑り止めのための微小な凹凸が表面に形成された平板材からなり、先端３ｂには安全帯のフックを掛止可能に両端が上記平板材に接続された丸棒からなる把持部１１が取り付けられている。また、基端３ａには、ブロック状のロープ固定具１２が踏み板３の裏面（水平に設置された場合における下面）に設置されており、ロープ固定具１２の両側面には、弾性材によって形成され平面視略円弧状をなす一対のアーム１３，１３がそれぞれ基端３ａから斜めに突出するように設けられている。そして、アーム１３，１３は、一方の先端１３ａに樹木Jの胴部に対して巻回可能な長さを有するチェーン１４の一端が連結されており、他方の先端１３ｂがチェーン１４の他端やその途中部分を係止可能に鉤状に形成されている。 The tread board 3 is made of a flat plate with minute irregularities for preventing slippage formed on the surface, and the tip 3b is made of a round bar having both ends connected to the flat plate so that a hook of a safety belt can be hooked. Part 11 is attached. In addition, a block-shaped rope fixture 12 is installed on the rear surface (the lower surface when horizontally installed) of the tread board 3 at the base end 3a, and is formed on both side surfaces of the rope fixture 12 by an elastic material. A pair of arms 13 and 13 having a substantially arc shape in plan view are provided so as to protrude obliquely from the base end 3a. The arms 13, 13 are connected to one end 13a of one end of a chain 14 having a length that can be wound around the trunk of the tree J, and the other end 13b is connected to the other end of the chain 14, The intermediate part is formed in a hook shape so that it can be locked.

すなわち、木登り足場１では、踏み板３が保持部材２に取り付けられた状態で樹木Jの胴部に巻回したチェーン１４の両端をアーム１３，１３の先端１３ａ，１３ｂに連結させることで、踏み板３と保持部材２が一体として樹木Ｊに対して固定される構造となっている（図１参照）。したがって、木登り足場１は使用時の安全性に優れている。
また、一方のアーム１３の先端１３ａに一端が連結されたチェーン１４は、他端や途中部分のうち、適切な箇所を選んで他方のアーム１３の先端１３ｂに係止することで樹木Ｊの胴部に巻回させる長さを調節できる構造となっている。さらに、チェーン１４を樹木Ｊの胴部に巻回する際に、アーム１３，１３はその外面の形に応じて弾性変形可能な構造となっている。したがって、木登り足場１においては、チェーン１４によって保持部材２と踏み板３をしっかりと樹木Ｊに固定して、使用時の安全性をさらに向上させることが可能である。 That is, in the tree climbing scaffold 1, the both ends of the chain 14 wound around the trunk of the tree J with the tread 3 attached to the holding member 2 are connected to the ends 13 a and 13 b of the arms 13 and 13, thereby 3 and the holding member 2 are integrally fixed to the tree J (see FIG. 1). Therefore, the tree climbing scaffold 1 is excellent in safety during use.
Further, the chain 14 having one end connected to the tip 13a of one arm 13 selects an appropriate position from the other end or midway, and is locked to the tip 13b of the other arm 13, whereby the trunk of the tree J is obtained. It has a structure that can adjust the length wound around the part. Furthermore, when the chain 14 is wound around the trunk of the tree J, the arms 13 and 13 have a structure that can be elastically deformed according to the shape of the outer surface thereof. Therefore, in the tree climbing scaffold 1, the holding member 2 and the footboard 3 can be firmly fixed to the tree J by the chain 14, and the safety during use can be further improved.

踏み板３の基端３ａには、一対の鉤状部１５，１５が連結具９，９の貫通孔９ａ，９ａに対してそれぞれ挿通可能に、かつ、ロープ固定具１２の反対側（水平に設置された場合における上面側）へ突出するように設けられている。また、ロープ固定具１２の両側には、踏み板３を保持部材２に対して直交するように取り付けた際に、先端が連結具９，９と板バネ１０ｂ，１０ｂの間にそれぞれ配置されるように一対の棒状の位置決め具１６，１６が設置されている。 At the base end 3 a of the footboard 3, a pair of hook-shaped portions 15, 15 can be inserted into the through holes 9 a, 9 a of the couplers 9, 9, respectively, and on the opposite side of the rope fixture 12 (installed horizontally) In this case, it is provided so as to protrude to the upper surface side). Further, when the tread plate 3 is attached to both sides of the rope fixture 12 so as to be orthogonal to the holding member 2, the tips are arranged between the coupling tools 9, 9 and the leaf springs 10b, 10b, respectively. A pair of rod-shaped positioning tools 16 and 16 are installed in the main body.

伐採用引きロープ４は、樹木Ｊの高所に一部が巻回された状態で使用されるものであり、一端が連結金具８に連結されるとともに、他端が踏み板３の下方に配置され、その途中部分が踏み板３の基端３ａと保持部材２の間に挿設されている（図１及び図４（ａ）参照）。
また、前述のとおり、連結具９，９には保持部材２の長手方向と平行をなすように貫通孔９ａ，９ａがそれぞれ設けられているが（図４（ｂ）参照）、貫通孔９ａ，９ａは、鉤状部１５が挿通された状態で踏み板３の鉤状部１５の中心を通る軸Ｌ（図３（ａ）参照）を中心とする回動を阻害しないような形状となっている（図４（ｃ）参照）。すなわち、連結具９は鉤状部１５の係止手段として機能し、鉤状部１５，１５は、その中心を通る軸Ｌのまわりに踏み板３が回動可能となるように連結具９，９を介して保持部材２に着脱可能に連結されている。
このような構造により、木登り足場１では、図４（ａ）に示した状態において、連結具９，９の貫通孔９ａ，９ａに鉤状部１５，１５の先端をそれぞれ挿通させると、図５（ａ）に示すように、鉤状部１５の中心を通る軸Ｌ（図３を参照）を中心として踏み板３を矢印Ｄで示す方向へ回動させることができる。 The felling pulling rope 4 is used in a state where a part thereof is wound around the height of the tree J, and one end is connected to the connecting bracket 8 and the other end is arranged below the tread board 3. The intermediate portion is inserted between the base end 3a of the tread plate 3 and the holding member 2 (see FIGS. 1 and 4A).
Moreover, as mentioned above, although the through-holes 9a and 9a are each provided in the coupling tools 9 and 9 so that it may become parallel to the longitudinal direction of the holding member 2 (refer FIG.4 (b)), through-holes 9a and 9a, 9a has a shape that does not hinder the rotation around the axis L (see FIG. 3 (a)) passing through the center of the hook-shaped portion 15 of the footboard 3 in a state where the hook-shaped portion 15 is inserted. (See FIG. 4 (c)). That is, the connecting tool 9 functions as a locking means for the hook-shaped portion 15, and the hook-shaped portions 15, 15 are connected to the connecting tools 9, 9 so that the footboard 3 can be rotated around the axis L passing through the center. Is detachably connected to the holding member 2.
With such a structure, in the tree climbing scaffold 1, when the tips of the hook-shaped portions 15, 15 are inserted into the through holes 9 a, 9 a of the couplers 9, 9 in the state shown in FIG. As shown in FIG. 5A, the tread plate 3 can be rotated in the direction indicated by the arrow D around the axis L (see FIG. 3) passing through the center of the bowl-shaped portion 15.

上記構造の木登り足場１においては、保持部材２の上端２ａや下端２ｂに連結した連結ロープ５を介して複数個を数珠つなぎのようにして１本の伐採用引きロープ４に連結させることができる。したがって、本発明の木登り足場１を用いることによれば、樹木Ｊの高さに応じて、設置する数を容易に調整することが可能である。また、木登り足場１は、伐採用引きロープ４や連結ロープ５から取り外したり、踏み板３を保持部材２から取り外したりすることにより、嵩張らない状態にすることができる。したがって、持ち運びや保管が容易である。 In the tree climbing scaffold 1 having the above-described structure, a plurality of ropes can be connected to one felling pulling rope 4 through a connecting rope 5 connected to the upper end 2 a and the lower end 2 b of the holding member 2. it can. Therefore, according to the tree climbing scaffold 1 of the present invention, the number to be installed can be easily adjusted according to the height of the tree J. Moreover, the tree climbing scaffold 1 can be made into a non-bulk state by removing it from the felling pulling rope 4 and the connecting rope 5 or removing the footboard 3 from the holding member 2. Therefore, it is easy to carry and store.

踏み板３の回動に伴って、位置決め具１６，１６の先端は、図５（ｂ）に示すように、板バネ１０ｂ，１０ｂをそれぞれ弾性変形させながら上方へ移動する。その後、踏み板３をさらに回動させて、保持部材２に対して直交した状態にすると、図５（ｃ）に示すように、位置決め具１６，１６の先端は連結具９，９と板バネ１０ｂ，１０ｂの間にそれぞれ配置され、板バネ１０ｂ，１０ｂは元の形に戻る。その結果、位置決め具１６，１６の先端は板バネ１０ｂ，１０ｂによって下方への移動が阻止され、踏み板３の回動が規制される。
なお、踏み板３を手で掴むなどして図５（ａ）に示した矢印Ｄと逆の方向へ回動させるように踏み板３に対して力を加えれば、位置決め具１６，１６の先端は板バネ１０ｂ，１０ｂの弾性力に抗して下方へと移動する。しかし、そのような力を加えない限り、踏み板３が回動することはない。
すなわち、本発明の木登り足場１によれば、保持部材２に対して直交した状態から踏み板３が勝手に回動してしまうおそれがないため、その設置作業を効率よく行うことができる。 As the tread plate 3 rotates, the distal ends of the positioning tools 16 and 16 move upward while elastically deforming the leaf springs 10b and 10b, respectively, as shown in FIG. 5B. Thereafter, when the tread plate 3 is further rotated so as to be orthogonal to the holding member 2, as shown in FIG. 5 (c), the distal ends of the positioning tools 16, 16 are connected to the connecting tools 9, 9 and the leaf spring 10b. , 10b, and the leaf springs 10b, 10b return to their original shapes. As a result, the tips of the positioning tools 16 and 16 are prevented from moving downward by the leaf springs 10b and 10b, and the rotation of the footboard 3 is restricted.
If a force is applied to the tread plate 3 so as to rotate it in the direction opposite to the arrow D shown in FIG. It moves downward against the elastic force of the springs 10b, 10b. However, unless such a force is applied, the footboard 3 does not rotate.
That is, according to the tree-climbing scaffold 1 of the present invention, there is no possibility that the footboard 3 will rotate freely from a state orthogonal to the holding member 2, so that the installation work can be performed efficiently.

また、木登り足場１は、伐採用引きロープ４を介して樹木Ｊに吊り下げられた状態で使用されるものであるため、伐採用引きロープ４が移動しないようにその一部を固定しておけば、チェーン１４を用いなくとも勝手に下方へ移動するおそれがなく、安全である。特に、数珠つなぎのようにして複数個を１本の伐採用引きロープ４に吊り下げた場合、樹木Ｊに対して個別に固定せずとも、伐採用引きロープ４の一部を固定するだけですべてについて下方への移動を防ぐことができるため、安全性に優れるとともに作業性も良い。
なお、後述するように、使用時には、踏み板３に体重を掛けることで、木登り足場１が伐採用引きロープ４に対して移動不能に固定されるため、伐採用引きロープ４の一部を固定する必要はない。 Moreover, since the tree climbing scaffold 1 is used in a state suspended from the tree J through the felling adoption pulling rope 4, a part thereof is fixed so that the felling pulling rope 4 does not move. If this is the case, there is no risk of moving downward without using the chain 14 and it is safe. In particular, when a plurality of hanging ropes 4 are hung on a single felling pull rope 4 like a rosary chain, it is only necessary to fix a part of the felling pull rope 4 without fixing them individually to the tree J. Since it is possible to prevent the downward movement of everything, it is excellent in safety and workability.
In addition, as will be described later, in use, the tree climbing scaffold 1 is fixed so as to be immovable with respect to the felling adoption pulling rope 4 by hanging the weight on the tread 3, so that a part of the felling adoption pulling rope 4 is fixed. do not have to.

木登り足場１の使用方法について図６を用いて具体的に説明する。図６は木登り足場１が樹木Ｊに取り付けられた状態を側面から見た図である。なお、図６では２つの木登り足場のみが示されているが、木登り足場の数は、これに限定されるものではなく、樹木の高さに応じて適宜変更可能である。また、図１乃至図５に示した構成要素については、同一の符号を付してその説明を省略する。
図６に示すように、伐採用引きロープ４は樹木Ｊの高所に一部が巻回されるとともに一端が連結金具８を介して第１の木登り足場１ａが連結されている。そして、この木登り足場１ａには連結ロープ５を介して第２の木登り足場１ｂが連結され、第２の木登り足場１ｂには保持部材２の下端２ｂに伐採用引きロープ４の他端が連結されている。 The usage method of the tree climbing scaffold 1 is demonstrated concretely using FIG. FIG. 6 is a side view of the state in which the tree climbing scaffold 1 is attached to the tree J. In FIG. 6, only two tree climbing scaffolds are shown, but the number of tree climbing scaffolds is not limited to this, and can be changed as appropriate according to the height of the trees. The components shown in FIGS. 1 to 5 are denoted by the same reference numerals, and the description thereof is omitted.
As shown in FIG. 6, a part of the felling pulling rope 4 is wound around the height of the tree J, and one end of the felling pulling rope 4 is connected to the first tree climbing scaffold 1 a via the connecting metal fitting 8. A second tree climbing scaffold 1b is connected to the tree climbing scaffold 1a via a connecting rope 5. The second tree climbing scaffold 1b is connected to the lower end 2b of the holding member 2 at the other end of the felling adopted pulling rope 4. Are connected.

このとき、伐採用引きロープ４の途中部分は木登り足場１ａ，１ｂに対し、踏み板３の基端３ａと保持部材２の間にそれぞれ挿設されているが、踏み板３の基端３ａと保持部材２によって挟持されてはいない。したがって、伐採用引きロープ４の木登り足場１ａ，１ｂの前面に垂れ下がっている部分を手で持つなどして引き下げると、木登り足場１ａ，１ｂが吊り上げられて上方へ移動する。逆に、当該部分を上方へ移動させたり、木登り足場１ａ，１ｂに連結されている側を引き下げたりすると、木登り足場１ａ，１ｂは下方へ移動する。
このように、木登り足場１ａ，１ｂは、伐採用引きロープ４を操作することによって上下方向へ容易に移動するため、設置する際の作業性が良い。 At this time, the midway part of the felling pulling rope 4 is inserted between the base end 3a of the footboard 3 and the holding member 2 with respect to the tree climbing scaffolds 1a and 1b, respectively. It is not clamped by the member 2. Accordingly, when the part of the tree-climbing scaffolding 1a, 1b that is felling on the front side of the tree-climbing pulling rope 4 is pulled down by holding it by hand, the tree-climbing scaffolds 1a, 1b are lifted and moved upward. On the contrary, when the part is moved upward or when the side connected to the tree climbing scaffolds 1a and 1b is lowered, the tree climbing scaffolds 1a and 1b are moved downward.
As described above, the tree climbing scaffolds 1a and 1b easily move in the vertical direction by operating the felling adoption pulling rope 4, so that the workability at the time of installation is good.

木登り足場１ａ，１ｂが所望の高さに配置された後、作業者は踏み板３に足をかけて木登り足場１ｂに上ることになるが、このとき、木登り足場１ａを利用すれば、その動作を安全に行うことができる。すなわち、木登り足場１ａの踏み板３に設けられている把持部１１を手で掴むようにしてバランスをとるとともに、把持部１１に安全帯のフックを掛けることにより、作業者は上述の動作を安全に行うことが可能である。
なお、作業者が木登り足場１ｂの踏み板３に体重をかけると、ロープ固定具１２によって伐採用引きロープ４は保持部材２に対して押し付けられ、伐採用引きロープ４は保持部材２と踏み板３によって挟持された状態になる。そして、踏み板３に体重をかける度合いが増すにつれて、保持部材２と踏み板３が伐採用引きロープ４を挟持する力は強くなり、最終的に木登り足場１ｂは伐採用引きロープ４に対して移動不能に固定される。これにより、木登り足場１ｂは樹木Ｊに対する固定が確実なものとなり、安全性が格段に向上する。 After the tree climbing scaffolds 1a and 1b are arranged at a desired height, the operator puts his / her feet on the footboard 3 and goes up to the tree climbing scaffold 1b. At this time, if the tree climbing scaffold 1a is used, The operation can be performed safely. That is, the gripper 11 provided on the footboard 3 of the tree climbing scaffold 1a is balanced by hand, and the operator can safely perform the above-described operation by hooking the gripper 11 with a safety hook. It is possible.
When the operator puts weight on the step board 3 of the tree climbing scaffold 1b, the felling adopted pulling rope 4 is pressed against the holding member 2 by the rope fixing device 12, and the felling adopted pulling rope 4 is held by the holding member 2 and the step board 3. It becomes the state clamped by. Then, as the degree of weight applied to the tread board 3 increases, the force that the holding member 2 and the tread board 3 pinch the felling adoption pulling rope 4 becomes stronger, and the tree climbing scaffold 1b finally moves relative to the felling adoption pulling rope 4 Fixed to impossible. As a result, the tree climbing scaffold 1b is securely fixed to the tree J, and the safety is remarkably improved.

なお、本発明の木登り足場は、本実施例に示した構造に限定されるものではない。例えば、アーム１３の先端１３ａを先端１３ｂのようにチェーン１４の端部を係止可能な構造として、チェーン１４の両端がいずれもアーム１３，１３を介して踏み板３に対して着脱可能に連結された構造としても良い。
また、伐採用引きロープ４は一方の端部のみが環状に形成された構造であっても良い。 In addition, the tree climbing scaffold of this invention is not limited to the structure shown in the present Example. For example, the tip 13a of the arm 13 is structured so that the end of the chain 14 can be locked like the tip 13b, and both ends of the chain 14 are detachably connected to the tread plate 3 via the arms 13 and 13. It is good also as a structure.
Further, the felling pulling rope 4 may have a structure in which only one end is formed in an annular shape.

本発明は、線下樹木の先端伐採や植林された樹木の枝打ち等の作業において利用可能である。 INDUSTRIAL APPLICABILITY The present invention can be used in operations such as cutting down the ends of underline trees and pruning planted trees.

１，１ａ，１ｂ…木登り足場２…保持部材２ａ…上端２ｂ…下端２ｃ…保持具３…踏み板３ａ…基端３ｂ…先端４…伐採用引きロープ５…連結用ロープ６…踏み板連結部７…幅広部８…連結金具８ａ…フック８ｂ…ピン８ｃ…フック連結具８ｄ…バネ９…連結具９ａ…貫通孔１０ａ…固定具１０ｂ…板バネ１１…把持部１２…ロープ固定具１３…アーム１３ａ，１３ｂ…先端１４…チェーン１５…鉤状部１６…位置決め具Ｊ…樹木Ｌ…軸 DESCRIPTION OF SYMBOLS 1,1a, 1b ... Tree climbing scaffold 2 ... Holding member 2a ... Upper end 2b ... Lower end 2c ... Holding tool 3 ... Tread board 3a ... Base end 3b ... Tip 4 ... Logging pulling rope 5 ... Connecting rope 6 ... Tread board connecting part 7 ... Wide part 8 ... Connecting bracket 8a ... Hook 8b ... Pin 8c ... Hook connecting tool 8d ... Spring 9 ... Connecting tool 9a ... Through hole 10a ... Fixing tool 10b ... Plate spring 11 ... Holding part 12 ... Rope fixing tool 13 ... Arm 13a , 13b ... tip 14 ... chain 15 ... bowl-shaped part 16 ... positioning tool J ... tree L ... axis

Claims

A rope that is used in such a way that part of it is wound around the height of a tree;
A holding member in which one end of the rope is connected to the upper end;
A tread board installed horizontally with the base end held by the holding member,
The rope climbing scaffold, wherein the rope is suspended so that the other end is disposed below the footboard.

The rope is inserted between the base end of the footboard and the holding member,
The tread plate is rotated until it is orthogonal to the holding member, and the base end rotates with respect to the holding member so that the base end cooperates with the holding member and clamps the rope in that state. The tree-climbing scaffold according to claim 1, wherein the tree-climbing scaffold is connected.

A hook-shaped portion provided at the base end of the tread plate;
A locking means for locking the hook-shaped portion,
3. The hook-like portion is detachably connected to the holding member via the locking means so that the tread plate is rotatable about the base end. Tree climbing scaffold as described in.

A leaf spring provided in a side surface of the holding member so as to project in a lateral direction in a semicircular shape in plan view and below the locking means;
In a state where the tread plate and the holding member are orthogonal to each other, a rod-shaped positioning tool having a tip disposed between the coupling tool and the leaf spring,
4. The tree climbing scaffold according to claim 3, wherein the positioning tool is installed at the base end of the tread plate so as to move while elastically deforming the leaf spring as the tread plate rotates.

The rope is formed in an annular shape at least one of both ends,
5. The tree climbing according to claim 1, wherein at least one of the upper end and the lower end of the holding member is formed in a hook shape so that the rope can be locked. scaffold.

The rope is formed in an annular shape at least one of both ends,
The connecting member according to any one of claims 1 to 4, wherein the holding member is provided with a connecting metal member whose opening portion of the hook is opened and closed by a pin at at least one of the upper end and the lower end. Tree climbing scaffold.

A chain having a length that can be wound around the trunk of the tree and having both ends connected to the tread board, and at least one end of the chain is detachably connected to the tread board The tree climbing scaffold according to any one of claims 1 to 6, wherein the tree climbing scaffold is provided.

8. The gripping part according to claim 1, further comprising a gripping portion formed of a round bar connected at both ends to the tip of the tread plate and formed to be capable of hooking a hook of a safety belt. Tree climbing scaffold described.