JPS5940031B2 - Main net device for fall prevention - Google Patents

Main net device for fall prevention

Info

Publication number
JPS5940031B2
JPS5940031B2 JP11088579A JP11088579A JPS5940031B2 JP S5940031 B2 JPS5940031 B2 JP S5940031B2 JP 11088579 A JP11088579 A JP 11088579A JP 11088579 A JP11088579 A JP 11088579A JP S5940031 B2 JPS5940031 B2 JP S5940031B2
Authority
JP
Japan
Prior art keywords
rope
shaped body
rod
parent
fall prevention
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
JP11088579A
Other languages
Japanese (ja)
Other versions
JPS5634358A (en
Inventor
昭彦 繁田
憲昭 田尻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujii Denko Co Ltd
Tokyo Electric Power Co Holdings Inc
Original Assignee
Tokyo Electric Power Co Inc
Fujii Denko Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokyo Electric Power Co Inc, Fujii Denko Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP11088579A priority Critical patent/JPS5940031B2/en
Publication of JPS5634358A publication Critical patent/JPS5634358A/en
Publication of JPS5940031B2 publication Critical patent/JPS5940031B2/en
Expired legal-status Critical Current

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Description

【発明の詳細な説明】 本発明は電柱・鉄塔・マスト・その他高層の構造物を昇
降する作業者の墜落を防止し安全を守る為の親綱装置と
それの懸架方法に関する発明である。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety rope device and a method for suspending the same to prevent falls and protect the safety of workers who ascend and descend utility poles, steel towers, masts, and other high-rise structures.

従来、送電線の鉄塔等においてはレールとかワイヤーロ
ープを鉄塔ポストに沿って常設しておいて、それに安全
器を嵌合して作業者は昇降し墜落を防止していたが、配
電線・通信線等の電柱とかマストその他の高層物におい
ては無防備の状態で作業者は昇降していたので、その途
中において手足を踏み外して墜落する災害が多く発生し
ていた。
Traditionally, on power transmission line towers, etc., rails or wire ropes were permanently installed along the tower posts, and safety devices were fitted to these to prevent workers from falling when ascending and descending. Because workers were climbing up and down utility poles, masts, and other high-rise structures without protection, there were many accidents in which workers lost their limbs and fell while climbing.

本発明は斯様な現状に鑑み、電柱等を昇降する作業者が
携帯して必要な時に容易に掛は外しできる安全な墜落防
止用親綱装置及びそれの懸架方法を提供することをその
目的とするものである。
In view of the current situation, it is an object of the present invention to provide a safe safety rope device for fall prevention that can be carried by workers who go up and down utility poles, etc. and easily unlatched when necessary, and a method for suspending the same. That is.

本発明の態様を添付図面に示す一実施例について詳記す
る。
Aspects of the invention will now be described in detail with reference to an embodiment illustrated in the accompanying drawings.

本実症例は図示する如く、テーパーがついていて連続的
に太さが異なる複数の強化プラスチック製のパイプ1を
継なぎ合せることにより伸縮自在の棒状体2を形成し、
先端部を折り返してそこに結合手段3として環部31を
設けた親ロープ4を上記棒状体2の内部に挿通したもの
である。
As shown in the figure, in this actual case, a telescopic rod-shaped body 2 is formed by joining together a plurality of tapered reinforced plastic pipes 1 of different thicknesses,
A main rope 4 whose tip end is folded back and a ring part 31 is provided thereon as a coupling means 3 is inserted into the inside of the rod-shaped body 2.

棒状体2は、ガラス繊維強化プラスチックによりパイプ
1を形成し、該パイプ1はテーパーがついていて順次連
続的に太さが異なる複数のものを用い、細いパイプ1を
順次太いパイプ1の内側へ各々基端側から嵌合収納する
The rod-shaped body 2 has a pipe 1 made of glass fiber reinforced plastic, and the pipes 1 are tapered and have successively different thicknesses, and each thin pipe 1 is successively inserted inside the thick pipe 1. Fit and store from the proximal side.

一番細いパイプ1から順次上部へ引き出すと細い方のパ
イプの基端部とそれに続く太いパイプの先端部とが重合
密着して順次継なぎ合せて伸長することができる。
When the thinnest pipe 1 is pulled upward in sequence, the base end of the thinner pipe and the distal end of the thicker pipe following it overlap closely and can be successively joined and extended.

一番太いパイプ1の基端部には内部へ嵌合した細いパイ
プが抜けないように蓋体21を着脱自在に取付けてあり
、そこから親ロープ4の下端部が外部へ繰り出している
A lid 21 is detachably attached to the base end of the thickest pipe 1 to prevent the thin pipe fitted inside from slipping out, and the lower end of the parent rope 4 is fed out from there.

親ロープ4は、アラミド繊維を撚り合せたロープにポリ
ウレタン樹脂を被覆したものを使用し、先端部を折り返
してさつま編み込み又は圧着スリーブ等で結合すること
によってそこに環部31を設けて結合手段3を形成した
ものである。
The parent rope 4 is made of a rope made of twisted aramid fibers coated with polyurethane resin, and the tip is folded back and joined with a satsuma weave or a crimp sleeve, and a ring part 31 is provided there. was formed.

結合物体7は親ロープ4を電柱等構造物6の上部に着脱
自在に結合するもので、電柱に既設されている足場釘と
かアーム体等を利用しても良いのであるが、本実姉例で
は別の取付金具71を電柱等構造物6の上部に取付けた
場合を説明する。
The connecting object 7 is to removably connect the main rope 4 to the top of a structure 6 such as a telephone pole, and it is possible to use scaffolding nails, arm bodies, etc. already installed on the telephone pole, but in this example, A case will be described in which another mounting bracket 71 is attached to the top of a structure 6 such as a utility pole.

この取付金具71は電柱等の構造物6に取付けるための
バンド72、該バンドを締着するボルト・ナツト73及
び該バンド72から突出するアーム74からなり、該ア
ーム74には親ロープ4の掛合部75を設けている。
This mounting bracket 71 consists of a band 72 for attaching to a structure 6 such as a telephone pole, a bolt/nut 73 for fastening the band, and an arm 74 protruding from the band 72. A portion 75 is provided.

緊張装置5は、第7図に示すように構造物6の下部にお
いて親ロープ4の下端部を緊張するもので、親ロープ4
の下端部を何んらかの方法で仮固定すれば必ずしも必要
としないが、後に説明する安全器を円滑に操作する為に
は設ける方が望ましく、該緊張装置5は第11図に示す
ように構造物6の下部に取付けるためのバンド55、該
バンド55を締着固定するためのボルト・ナツト56及
び該バンド55から突出したアーム57からなり、該ア
ーム57には親ロープ4を着脱自在に保持する為の挾持
部58を設けたものである。
The tensioning device 5 tensions the lower end of the parent rope 4 at the lower part of the structure 6, as shown in FIG.
Although it is not necessarily necessary if the lower end is temporarily fixed in some way, it is preferable to provide it in order to smoothly operate the safety device, which will be explained later, and the tension device 5 is as shown in FIG. 11. It consists of a band 55 for attaching to the lower part of the structure 6, a bolt/nut 56 for tightening and fixing the band 55, and an arm 57 protruding from the band 55, and the parent rope 4 can be attached to and detached from the arm 57. A clamping portion 58 is provided for holding it in place.

本発明の親綱装置を懸架する方法としては、電柱等構造
物6の上部に取付けられている結合物体7をどれにする
か選定しておくか、あるいは予め結合用の取付金具71
を常設しておくものとする。
As a method for suspending the main rope device of the present invention, it is necessary to select in advance which connecting object 7 to be attached to the top of the structure 6 such as a utility pole, or to use the connecting fitting 71 in advance.
shall be permanently installed.

高所作業者は本発明の親綱装置を工事現場、すなわち昇
降しようとする電柱等の構造物6の所まで携帯して行き
、地上において棒状体2の一番細い1段目のパイプ1を
引き出すと順次2段目・3段目と引き出されて棒状(*
2は伸びて行く、この場合それに挿通した親ロープ4は
先端部に設けた結合手段3が1段目のパイプ1の先端部
で支えられて棒状体2が伸びるに従って親ロープ4も引
き上げられて伸長する。
The worker working at high places carries the main rope device of the present invention to the construction site, that is, to the structure 6 such as a utility pole that is to be lifted or lowered, and pulls out the thinnest first stage pipe 1 of the rod-shaped body 2 on the ground. It is successively pulled out to the second and third stages to form a rod shape (*
In this case, the connecting means 3 provided at the tip of the main rope 4 inserted into it is supported by the tip of the first stage pipe 1, and as the rod-shaped body 2 extends, the main rope 4 is also pulled up. Stretch.

棒状体2を所定の長さ、すなわち結合物体7の位置まで
伸長させる。
The rod-shaped body 2 is extended to a predetermined length, that is, to the position of the joining object 7.

その状態で親ロープ4の先端部に設けた環部31を電柱
等構造物6の上部に取付けている取付金具71の掛合部
75に引掛ける(第5図)。
In this state, the ring portion 31 provided at the tip of the parent rope 4 is hooked onto the hook portion 75 of the mounting bracket 71 attached to the top of the structure 6 such as a utility pole (FIG. 5).

しかる後第6図のように前記とは逆に棒状体2のパイプ
1を下部から順次縮めると親ロープ4は上部の取付金具
71に懸架された状態に保持され、棒状1′2t2のみ
が縮むからその状態で棒状体2を地上に置くか、あるい
は棒状f*2を親ロープ4から抜き取る。
Thereafter, as shown in FIG. 6, when the pipes 1 of the rod-shaped body 2 are sequentially contracted from the bottom, contrary to the above, the parent rope 4 is held suspended from the upper mounting bracket 71, and only the rod-shaped body 1'2t2 is contracted. In this state, the rod-shaped body 2 is placed on the ground, or the rod-shaped body f*2 is pulled out from the parent rope 4.

そして親ロープ4の下端部を緊張装置5すなわち下部の
取付金具51によって親ロープ4の下端部を緊張保持す
る。
Then, the lower end of the parent rope 4 is held under tension by a tensioning device 5, that is, a lower fitting 51.

この場合、取付金具51は電柱等構造物6の下部におい
て、バンド55及びボルト・ナツト56によって締着固
定し、アーム57に設けている挟持部58で親ロープ4
の下端部を挾持する。
In this case, the mounting bracket 51 is tightened and fixed at the lower part of the structure 6 such as a telephone pole with a band 55 and bolts/nuts 56, and the main rope 4 is held by a clamping part 58 provided on the arm 57.
Grasp the lower end of the

このようにして親ロープ4を電柱等の構造物6に懸架す
る。
In this way, the main rope 4 is suspended from a structure 6 such as a utility pole.

高所作業を行なう作業者8は安全器9を親ロープ4に嵌
合しそれに耐着しているロープ91を作業者が着用して
いる安全ベルト10に結合する。
A worker 8 who performs high-place work fits the safety device 9 into the main rope 4 and connects the rope 91 attached thereto to the safety belt 10 worn by the worker.

この状態で作業者8は電柱等構造物6を昇降するのであ
るが、作業者の昇降移動に従って安全器9は親ロープ4
を伝って昇降移動し、その昇降途中において作業者が手
足を踏み外して墜落した場合は直に安全器9が親ロープ
4を掴んで停止し、墜落を防止する。
In this state, the worker 8 moves up and down the structure 6 such as a telephone pole, and the safety device 9 moves the main rope 4 as the worker moves up and down.
If the worker loses his or her limbs and falls while ascending or descending, the safety device 9 immediately grabs the main rope 4 and stops, preventing the worker from falling.

安全器9を上昇させる場合、親ロープの下端部を固定し
ておくと円滑に移動することができる。
When raising the safety device 9, it can be moved smoothly by fixing the lower end of the parent rope.

高所作業が終了すると前記とは逆に親ロープ4の下端部
を取付金具51から外し、棒状体2を親ロープ4の下端
部から通して最初と同じように1段目のパイプ1から順
次引き伸はして行くと棒状体2は親ロープ4にガイドさ
れて伸長し、先端部が親ロープ4の環部31に到達する
と棒状体2を持ち上げて親ロープ4の環部31を取付金
具71の掛合部75から外す。
When the work at high places is completed, remove the lower end of the main rope 4 from the mounting bracket 51 in the opposite manner as described above, pass the rod-shaped body 2 through the lower end of the main rope 4, and sequentially start from the first stage pipe 1 in the same way as before. As it is stretched, the rod-shaped body 2 is guided by the parent rope 4 and extends, and when the tip reaches the ring portion 31 of the parent rope 4, the rod-shaped body 2 is lifted and the ring portion 31 of the parent rope 4 is attached to the mounting bracket. 71 from the engaging part 75.

しかる後棒状体2の下方パイプわら順次縮めて行くと親
ロープ4は回収することができる。
Thereafter, the lower pipe straw of the rod-shaped body 2 is gradually contracted, and the parent rope 4 can be recovered.

第4図は本発明の棒状体2を構成するパイプ1の他の実
施例を示す断面図で、ガラス繊維強化プラスチツク層1
1を形成し、内周部の炭素繊維強化プラスチツク層12
を形成して両者を加熱溶着硬化してパイプ1を構成した
もので、炭素繊維の低伸度特性を生かして棒状体2のた
わみを一層少なくすることができる。
FIG. 4 is a sectional view showing another embodiment of the pipe 1 constituting the rod-shaped body 2 of the present invention, in which the glass fiber reinforced plastic layer 1
1 and an inner carbon fiber reinforced plastic layer 12
The pipe 1 is constructed by forming and heat welding and hardening both of them, making it possible to further reduce the deflection of the rod-shaped body 2 by taking advantage of the low elongation characteristics of carbon fiber.

特に棒状体2の中央部から上部を占める細いパイプに採
用すると効果的である。
It is particularly effective when applied to a thin pipe that occupies the upper part from the center of the rod-shaped body 2.

尚、炭素繊維は導体であるが、外周部を絶縁性のガラス
繊維層11で被っているので安全である。
Although carbon fiber is a conductor, it is safe because its outer periphery is covered with an insulating glass fiber layer 11.

また外周部のガラス繊維層11と内周部の炭素繊維層1
2との間に他の色彩を附したガラス繊維層を介在させる
と、外周の絶縁層が何んらかの要因によって損傷して中
間色層が露出した場合に危険を予知することができるか
らそれを取り替えれば良く安全である。
In addition, a glass fiber layer 11 on the outer periphery and a carbon fiber layer 1 on the inner periphery.
If a glass fiber layer with another color is interposed between the outer layer and the outer layer, it is possible to predict the danger if the outer insulating layer is damaged for some reason and the intermediate color layer is exposed. It is safe to replace it.

第8〜9図は親ロープ4の先端部に設けた結合手段3の
他の実姉例を示すもので、第8図は親ロープ4の先端部
にリング32を取付けたもので、第9図は親ロープ4の
先端部にフック33を取付けたものであるが、作用効果
は上記第1実癩例と同じである。
8 and 9 show other actual examples of the coupling means 3 provided at the tip of the main rope 4. FIG. 8 shows a ring 32 attached to the tip of the main rope 4, and FIG. Although a hook 33 is attached to the tip of the parent rope 4, the operation and effect are the same as in the first example.

第12〜13図は緊張装置5の他の実施例を示すもので
、第12図は親ロープ4を挿通し止爪等で係1トするこ
とができる緊張具52及びそれに子ロープ53を結合し
て電柱等構造物6の下部に取付けるようにしたものであ
り、また第13図のものは、第12図と同じく緊張具5
2と子ロープ53とを有し、その子ロープ53に重錘5
4を結合したものであり、各々親ロープ4の下端部を緊
張保持する点では前記第1実施例と均等である。
12 and 13 show other embodiments of the tensioning device 5, and FIG. 12 shows a tensioning device 52 into which the parent rope 4 can be inserted and locked with a stopper, etc., and a child rope 53 is connected thereto. The one in Fig. 13 is a tensioning device 5 that is attached to the lower part of a structure 6 such as a utility pole.
2 and a child rope 53, and a weight 5 is attached to the child rope 53.
4, and is equivalent to the first embodiment in that each rope holds the lower end of the parent rope 4 under tension.

その外に親ロープ4としてナイロン等の合成繊維ロープ
及びそれにポリウレタン樹脂又は他の樹脂を被覆したも
のを使用することもできる。
In addition, a synthetic fiber rope such as nylon and a rope coated with polyurethane resin or other resin may also be used as the parent rope 4.

また親ロープ4は棒状体2に挿通した状態で携帯しても
、あるいは別々に携帯しても、また親ロープ4を別の巻
取器に巻いて併用しても良い。
Further, the main rope 4 may be carried while being inserted into the rod-shaped body 2, or may be carried separately, or the main rope 4 may be wound on another winder and used together.

本発明は上記の通りであって、棒状体2は強化プラスチ
ックのパイプ1を使用しているので、軽量であると共に
絶縁性に富んでおり感電の恐れはない。
The present invention is as described above, and since the rod-shaped body 2 uses the pipe 1 made of reinforced plastic, it is lightweight and has high insulation properties, so there is no risk of electric shock.

また各パイプ1はテーパー状に形成しているので、たイ
つみが少なく伸長した時はテーパーによりその継なぎ部
は密着固定できるのでガタッキがなく操作性が良い。
In addition, since each pipe 1 is formed in a tapered shape, there is little tension and when the pipe is expanded, the joint portion can be tightly fixed due to the taper, so there is no wobbling and the operability is good.

また棒状体を短縮した場合は各パイプ1内へ収納するこ
とができるので嵩が低く携帯に便利である。
Further, when the rod-shaped body is shortened, it can be stored inside each pipe 1, so it is low in bulk and convenient to carry.

また本発明では、親ロープ4は棒状体2の内部へ挿通し
て棒状体2の伸縮操作と共に伸縮できるようになってお
り、且つ親ロープ4を伸長した場合、重心が棒状体2内
にあるために親ロープの重みによるたわみが少なく、ま
た風圧の影響を受けにくい為に親ロープの結合手段3を
構造物の結合物体7へ掛は外しする操作が容易にできる
Further, in the present invention, the parent rope 4 is inserted into the inside of the rod-shaped body 2 and can be expanded and contracted with the expansion and contraction operation of the rod-shaped body 2, and when the parent rope 4 is expanded, the center of gravity is within the rod-shaped body 2. Therefore, the main rope has little deflection due to the weight of the main rope, and is not easily affected by wind pressure, so that the connecting means 3 of the main rope can be easily connected to and removed from the connecting object 7 of the structure.

また親ロープ4は棒状体2の内部に挿通する方式である
為に、作業終了後親ロープ4を回収する場合に棒状体2
を伸長させる時は棒状体2は親ロープ4にガイドされて
伸長する為に棒状体2が揺れ動くことなく容易に結合手
段3の位置まで到達させることができる。
In addition, since the main rope 4 is inserted into the inside of the rod-shaped body 2, when the main rope 4 is recovered after the work is completed, the rod-shaped body 2
When extending the rod-shaped body 2, the rod-shaped body 2 is guided by the parent rope 4 and stretched, so that the rod-shaped body 2 can easily reach the position of the coupling means 3 without swinging.

また親ロープ4は棒状体内に挿通しているから、それの
伸縮時及び掛は外し時においては棒状体2によって保護
されていて電線とか他の物体によって損傷を受けること
はない。
Further, since the parent rope 4 is inserted into the rod-shaped body, it is protected by the rod-shaped body 2 when it is expanded, contracted, and unlatched, and is not damaged by electric wires or other objects.

また本発明の棒状体2は太さが異なるテーパー状の短尺
パイプ1を継なぎ合せる構成であるので、棒状体2が損
傷した場合でも、損傷した部分のパイプのみを取り替え
る丈けで修復することができるので簡単且つ経済的であ
る。
Furthermore, since the rod-shaped body 2 of the present invention has a structure in which tapered short pipes 1 of different thicknesses are joined together, even if the rod-shaped body 2 is damaged, it can be repaired by replacing only the damaged part of the pipe. It is simple and economical.

従って本発明は軽量で携帯性・操作性・絶縁性・耐久性
・安全性に優れている為に、保守点検作業等においても
作業者1人によって親ロープ4を電柱等構造物6に容易
に掛は外しできるから、それら構造物6を昇降する作業
者の墜落災害を完全に防止することができる等々の顕著
な効果がある。
Therefore, since the present invention is lightweight and has excellent portability, operability, insulation, durability, and safety, one worker can easily attach the parent rope 4 to a structure 6 such as a utility pole during maintenance and inspection work. Since the hooks are removable, there are significant effects such as completely preventing accidents involving workers who go up and down the structure 6 from falling.

【図面の簡単な説明】[Brief explanation of drawings]

添付図面は本発明の実姉例を示すもので、第1図は本装
置を伸ばしたところの正面図、第2図は縮めたところの
正面図、第3図はl−111断面拡大図、第4図はパイ
プの他の実施例を示す断面図、第5図、第6図、第7図
は使用状態図、第8図、第9図は結合手段の他の実姉例
を示す正面図、第10図、第11図は取付金具の実姉例
を示す平面図、第12図、第13図は懸架方法の実施例
を示す図である。 図中の付量1はパイプ、2は棒状体、3は結合手段、4
は親ロープ、5は緊張装置、6は構造物、7は結合物本
、8は作業者、9は安全器、10は安全ベルト、11は
ガラス繊維層、12は炭素繊離層、21は蓋体、31は
環部、32はリング、33はフック、51.71は取付
金具、52は緊張具、53は子ロープ、54は重錘、5
5.γ2はバンド、56,73はボルト・ナツト、57
゜74はアーム、58は挾持部、75は掛合部、91は
ロープである。
The attached drawings show an actual sister example of the present invention, and FIG. 1 is a front view of the device when it is extended, FIG. 2 is a front view of the device when it is contracted, and FIG. 4 is a sectional view showing another embodiment of the pipe, FIGS. 5, 6 and 7 are usage state diagrams, and FIGS. 8 and 9 are front views showing other examples of the coupling means. FIGS. 10 and 11 are plan views showing actual examples of the mounting fittings, and FIGS. 12 and 13 are views showing examples of the suspension method. In the figure, attachment 1 is a pipe, 2 is a rod-shaped body, 3 is a coupling means, 4
is the parent rope, 5 is the tension device, 6 is the structure, 7 is the binding book, 8 is the worker, 9 is the safety device, 10 is the safety belt, 11 is the glass fiber layer, 12 is the carbon fiber layer, 21 is the Lid body, 31 is a ring, 32 is a ring, 33 is a hook, 51.71 is a mounting bracket, 52 is a tensioning device, 53 is a child rope, 54 is a weight, 5
5. γ2 is a band, 56, 73 is a bolt/nut, 57
74 is an arm, 58 is a clamping portion, 75 is a hooking portion, and 91 is a rope.

Claims (1)

【特許請求の範囲】 1 テーパーがついて連続的に太さが異る複数の強化プ
ラスチック製パイプ1を継なぎ合せることにより伸縮自
在の棒状体2を形成し、先端部に結合手段3を設けた親
ロープ4を上記棒状体2内に挿通したことを特徴とする
墜落防止用親綱装置。 2 パイプ1はガラス繊維又は炭素繊維又はその両方の
強化プラスチックを用いることを特徴とする特許請求の
範囲第1項に記載の墜落防止用親綱装置。 3 パイプ1は外周部にガラス繊維強化プラスチツク層
11を形成し、内周部に炭素繊維強化プラスチツク層1
2を形成して両者を加熱硬化したことを特徴とする特許
請求の範囲第1項又は第2項に記載の墜落防止用親綱装
置。 4 親ロープ4は合成繊維製ロープ又はそのロープにプ
ラスチックを被覆したロープを用いることを特徴とする
特許請求の範囲第1項、第2項又は第3項に記載の墜落
防止用親綱装置。 5 親ロープ4はアラミド繊維製ロープ又はそのロープ
にプラスチックを被覆したロープを用いることを特徴と
する特許請求の第1項、第2項又は第3項に記載の墜落
防止用親綱装置。 6 結合手段3は親ロープ4の先端部を折り返し結合し
て環部31を設けるか又は別のリング32とかフック3
3を取付けたことを特徴とする特許請求の範囲第1項、
第2項、第3項、第4項又は第5項に記載の墜落防止用
親綱装置。
[Claims] 1. A telescopic rod-shaped body 2 is formed by connecting a plurality of tapered reinforced plastic pipes 1 of continuously different thicknesses, and a connecting means 3 is provided at the tip. A parent rope device for fall prevention, characterized in that a parent rope 4 is inserted into the rod-shaped body 2. 2. The main line device for fall prevention according to claim 1, wherein the pipe 1 is made of reinforced plastic made of glass fiber, carbon fiber, or both. 3 The pipe 1 has a glass fiber reinforced plastic layer 11 formed on the outer periphery and a carbon fiber reinforced plastic layer 1 formed on the inner periphery.
2. The main rope device for fall prevention according to claim 1 or 2, characterized in that the main rope device is formed with two parts and is heated and hardened. 4. The parent rope device for fall prevention according to claim 1, 2, or 3, wherein the parent rope 4 is a synthetic fiber rope or a rope coated with plastic. 5. The parent rope device for fall prevention according to claim 1, 2, or 3, wherein the parent rope 4 is an aramid fiber rope or a rope coated with plastic. 6 The coupling means 3 can be formed by folding and coupling the tip of the parent rope 4 to form a ring 31, or by using another ring 32 or hook 3.
Claim 1, characterized in that 3 is attached.
The main rope device for fall prevention according to paragraph 2, paragraph 3, paragraph 4, or paragraph 5.
JP11088579A 1979-08-29 1979-08-29 Main net device for fall prevention Expired JPS5940031B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11088579A JPS5940031B2 (en) 1979-08-29 1979-08-29 Main net device for fall prevention

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11088579A JPS5940031B2 (en) 1979-08-29 1979-08-29 Main net device for fall prevention

Publications (2)

Publication Number Publication Date
JPS5634358A JPS5634358A (en) 1981-04-06
JPS5940031B2 true JPS5940031B2 (en) 1984-09-27

Family

ID=14547154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11088579A Expired JPS5940031B2 (en) 1979-08-29 1979-08-29 Main net device for fall prevention

Country Status (1)

Country Link
JP (1) JPS5940031B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3533696B1 (en) 2016-12-01 2023-01-11 Yamaha Hatsudoki Kabushiki Kaisha Leaning vehicle

Also Published As

Publication number Publication date
JPS5634358A (en) 1981-04-06

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