JP7833356B2 - Kamares construction method connecting fittings and Kamares construction method using the same - Google Patents
Kamares construction method connecting fittings and Kamares construction method using the sameInfo
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Description
本発明は、カマレス工法用連結金具及びこれを用いたカマレス工法に関する。
より具体的には、がいし装置に緊線（弛度調整）作業及び二重防護の機能を持ち合わせた改良型の連結金具（リンク）を用いることにより、作業員の大幅な労力低減による施工性向上、及び工具類の落下リスクの大幅な低減による安全性向上に貢献することができるカマレス工法用連結金具及びこれを用いたカマレス工法に関する。
This invention relates to a connecting fitting for the Kamares construction method and the Kamares construction method using the same.
More specifically, this invention relates to a connecting fitting for the Kamares construction method and the Kamares construction method using the same, which contribute to improved workability by significantly reducing the labor required by workers and improving safety by significantly reducing the risk of tools falling, by using an improved connecting fitting (link) that incorporates the functions of tensioning (sag adjustment) work and double protection in the insulator device.
本明細書中の「延線」とは、送電線鉄塔（以下、鉄塔という）間の数ｋｍの区間を１延線区間とし、電線を鉄塔に取り付けた金車を経由させてウインチで引き延ばして架線をおこなう作業であり、「緊線」とは、延線した電線をあらかじめ設計で決められた電線の弛み（弛度）に調整するための作業である。
本明細書中の「カムアロング」とは、延線及び緊線時に張力のかかった電線を把持して一時的に引き留める工具である。
In this specification, "extension" refers to the process of stretching power lines by using a winch to pull the power lines through pulleys attached to the towers, with each extension section being several kilometers in length. "Tensioning" refers to the process of adjusting the extended power lines to a predetermined sag (degree of sag) as specified in the design.
In this specification, "cam-along" refers to a tool used to grasp and temporarily hold in tension on an electric wire during wire laying and tensioning.
従来の緊線（弛度調整）作業を、図５及び図６に示す。
図５は、緊線（弛度調整）作業時に、がいし装置に緊線用工具（２）を連結して電線を取り込む従来の工法を示している。
従来の緊線（弛度調整）作業では、緊線作業の際にがいし装置に連結した緊線用工具（２）が外れたり、電線把持部（クランプ）からの電線抜け等により、電線が落下する事故を防止するため、作業員が径間電線に身を乗り出してカムアロングを取付け、二重防護をおこなっている。
図６は、緊線（弛度調整）作業時に、がいし装置に緊線用金具（３）に付随する緊線リンク（４）（クレビス）を連結して電線を取り込む従来の工法を示している。図６の工法は、図５の工法と比較して緊線用工具（２）を別途必要としないため、緊線用工具（２）の取付け及び取外し作業が不要ではあるものの、二重防護をおこなう際には、図５の工法と同じように、作業員が径間電線に身を乗り出してカムアロングの取付け及び取外し作業をおこなう必要があった。
The conventional tensioning (sag adjustment) process is shown in Figures 5 and 6.
Figure 5 shows a conventional method of securing electric wires by connecting a tensioning tool (2) to the insulator device during tensioning (sag adjustment) work.
In conventional wire tensioning (sag adjustment) work, to prevent accidents such as wires falling due to the wire tensioning tool (2) connected to the insulator device coming loose or the wire slipping out of the wire gripping part (clamp), workers lean over the wires between spans to attach the cam-along, providing double protection.
Figure 6 shows a conventional method of securing electric wires during tensioning (sag adjustment) work by connecting a tensioning link (4) (clevis) attached to a tensioning fitting (3) to the insulator device. Compared to the method in Figure 5, the method in Figure 6 does not require a separate tensioning tool (2), and therefore the installation and removal of the tensioning tool (2) is unnecessary. However, when performing double protection, workers had to lean over the span electric wires to install and remove the cam-along, just as in the method in Figure 5.
特許文献１には、延線された電線の緊線作業時において、耐張クランプに取り付けられたカマレス金具と、バーニヤ金具に取り付けられた平行クレビスとの連結作業をおこないやすい緊線方法及びそれに用いるカマレス金具が開示されている。
しかしながら、特許文献１に開示された緊線工法では、従来と同様に緊線用金具に緊線用工具を連結させて作業をおこなう工法であることから、緊線時に工具の取付けや取外し作業に多くの時間を要していた。
Patent Document 1 discloses a method for facilitating the connection of a camless fitting attached to a tension clamp and a parallel clevis attached to a vernier fitting during the tensioning work of extended electric wires, as well as a camless fitting used therein.
However, the wire tensioning method disclosed in Patent Document 1 is a method in which a wire tensioning tool is connected to a wire tensioning fitting, as in the conventional method, and therefore a lot of time is required for attaching and detaching the tool during wire tensioning.
また、電線の架線工事は、地上から１００ｍ超の高所での作業が主であるため、作業員の安全を確保することが重要である。しかし、重量物を扱う作業を鉄塔上等の足場の悪い高所や鉄塔間の電線に身を乗り出した不安定な姿勢でおこなうため、作業員や工具等の落下事故が発生する可能性が高いという問題があった。 Furthermore, since overhead power line installation work primarily involves working at heights exceeding 100 meters above the ground, ensuring worker safety is crucial. However, because the work involves handling heavy objects at high altitudes with unstable footing, such as on top of transmission towers, or in precarious positions leaning over power lines between towers, there is a high risk of accidents involving falling workers or tools.
本発明は、叙上の従来技術の問題点を解決すべく、がいし装置に緊線（弛度調整）作業及び二重防護の機能を持ち合わせた改良型の連結金具（リンク）を用いることで、従来の緊線作業時に必要とされていた緊線用工具やその取付け作業、及び径間電線へのカムアロング取付け作業が省略できることから、作業員の大幅な労力低減による施工性向上、及び工具類の落下リスクの大幅な低減による安全性向上に貢献することができるカマレス工法用連結金具及びこれを用いたカマレス工法を提供することを目的とする。 This invention aims to solve the problems of the conventional technology described above by using an improved connecting fitting (link) for the insulator device that incorporates the functions of tensioning (sag adjustment) and double protection. This eliminates the need for tensioning tools, their installation, and the installation of cam-alongs on the inter-span wires, which were previously required during conventional tensioning work. Therefore, it contributes to improved work efficiency through a significant reduction in the labor required of workers, and improved safety through a significant reduction in the risk of tools falling. The invention also aims to provide a connecting fitting for the cam-along method and a cam-along method using this fitting.
請求項１に係る発明は、鉄塔間に架設される電線の緊線作業、及び該緊線時の二重防護作業に使用するカマレス工法用連結金具であって、
前記連結金具は、前記電線側にあるクレビス又はクランプと鉄塔側にあるバーニヤ金具又はクレビスの間に連結され、かつこの連結金具は、連結される緊線用孔以外の少なくとも１か所以上に二重防護作業のための防護用孔が設けられたことを特徴とする、カマレス工法用連結金具に関する。
The invention according to claim 1 is a connecting fitting for the Kamares method used for tensioning electric wires installed between transmission towers and for double protection work during said tensioning,
The present invention relates to a connecting fitting for the Kamares construction method, characterized in that the connecting fitting is connected between a clevis or clamp on the electric wire side and a vernier fitting or clevis on the tower side, and that the connecting fitting is provided with protective holes for double protection work in at least one location other than the tensioning hole to which it is connected.
請求項２に係る発明は、前記カマレス工法用連結金具は、平面視四角形状、三角形状、又は扇形状である、請求項１に記載のカマレス工法用連結金具に関する。 The invention according to claim 2 relates to the Kamares construction method connecting fitting described in claim 1, wherein the Kamares construction method connecting fitting has a rectangular, triangular, or fan-shaped form in plan view.
請求項３に係る発明は、前記カマレス工法用連結金具の材質は圧延鋼である、請求項１に記載のカマレス工法用連結金具に関する。 The invention according to claim 3 relates to the Kamares construction method connecting fitting described in claim 1, wherein the material of the Kamares construction method connecting fitting is rolled steel.
請求項４に係る発明は、前記カマレス工法用連結金具の材質は圧延鋼である、請求項２に記載のカマレス工法用連結金具に関する。 The invention according to claim 4 relates to the Kamares construction method connecting fitting described in claim 2, wherein the material of the Kamares construction method connecting fitting is rolled steel.
請求項５に係る発明は、請求項１乃至４のいずれかに記載のカマレス工法用連結金具を用いて、鉄塔間に延線された電線を緊線する工法であって、前記連結金具を用いて緊線作業及び緊線作業中の二重防護を同時におこなう、カマレス工法に関する。 The invention according to claim 5 relates to a method for tightening electric wires extended between transmission towers using a connecting fitting for the Kamares method described in any one of claims 1 to 4, wherein the Kamares method simultaneously performs the tightening work and double protection during the tightening work using the connecting fitting.
請求項１に係る発明によれば、本発明に係るカマレス工法用連結金具は、電線側にあるクレビス又はクランプと鉄塔側にあるバーニヤ金具又はクレビスの間に連結され、かつこの連結金具は、連結される緊線用孔以外の少なくとも１か所以上に二重防護作業のための防護用孔が設けられたことを特徴としているため、緊線（弛度調整）及び二重防護の２種類の作業をひとつの金具で同時におこなうことができることから、二重防護のためのカムアロングの取付け及び取外し作業をおこなう必要がなく、作業員の労力を大幅に低減でき、施工性及び安全性を向上させることができる。 According to the invention of claim 1, the connecting fitting for the Kamares construction method according to the present invention is connected between a clevis or clamp on the power line side and a vernier fitting or clevis on the transmission tower side, and this connecting fitting is characterized by having at least one protective hole for double protection work in addition to the tensioning hole to which it is connected. Therefore, since two types of work, tensioning (sag adjustment) and double protection, can be performed simultaneously with a single fitting, there is no need to perform the installation and removal work of the cam-along for double protection, the labor of workers can be greatly reduced, and workability and safety can be improved.
請求項２に係る発明によれば、カマレス工法用連結金具は、平面視四角形状、三角形状、又は扇形状であるため、緊線作業実施時の現場環境等の条件に合わせ、金具の向きを変更したり、連結させる金具に合わせた形状を選択できたりと、あらゆる条件下の緊線作業に柔軟に対応することができる。 According to the invention of claim 2, the connecting fitting for the Kamares construction method has a rectangular, triangular, or fan-shaped form in plan view. Therefore, it can flexibly adapt to tensioning work under various conditions, such as changing the orientation of the fitting or selecting a shape that matches the fitting being connected, depending on the site environment and other conditions during tensioning work.
請求項３及び４に係る発明によれば、カマレス工法用連結金具の材質は圧延鋼であり鋼板品のため、従来用いられている鍛造品及び鋳造品の連結金具と比較し製造性が良く、緊線作業実施時の条件に合わせて使用する工具に合うように連結金具の形状を変更するなど、用途に応じた仕様変更を容易におこなうことができる。 According to the inventions of claims 3 and 4, the material of the connecting fitting for the Kamares construction method is rolled steel and is a steel plate product. Therefore, it offers better manufacturability compared to conventionally used forged and cast connecting fittings, and specifications can be easily modified according to the application, such as changing the shape of the connecting fitting to match the tools used in accordance with the conditions during tensioning work.
請求項５に係る発明によれば、緊線（弛度調整）作業において、緊線（弛度調整）及び二重防護の２種類の作業をひとつの金具で同時におこなうことができることから、作業員の大幅な労力低減により施工性を向上させることができる。また、二重防護のためのカムアロングの取付け及び取外し作業をおこなう必要がなく、作業員が電線に身を乗り出して作業する必要もないことから、作業員及び工具類の落下リスクの大幅な低減により、緊線作業時の安全性を向上させることができる。 According to the invention of claim 5, in wire tensioning (sag adjustment) work, two types of work—wire tensioning (sag adjustment) and double protection—can be performed simultaneously with a single fitting, thereby significantly reducing the labor required by workers and improving work efficiency. Furthermore, since there is no need to attach and detach the cam-along for double protection, and workers do not need to lean over the wires to work, the risk of workers and tools falling is significantly reduced, thereby improving safety during wire tensioning work.
以下、本発明に係るカマレス工法用連結金具およびこれを用いた緊線工法の一実施形態について、図面を参照しながら説明する。 The following describes an embodiment of the connecting fitting for the Kamares construction method and a tensioning method using the same according to the present invention, with reference to the drawings.
本発明に係るカマレス工法用連結金具の一例について説明する。尚、以下に詳述する工法は一例であって、これに限定されない。
以下の例では、本発明に係る平面視四角形状のカマレス工法用連結金具（１）を用いて緊線作業を実施しているが、これに限定されず、下記工程を実施できるカマレス工法用連結金具（１）であり、当業者に自明のものであれば、いかなるものを用いても良い。
An example of a connecting fitting for the Kamares construction method according to the present invention will be described below. Note that the construction method described in detail below is just one example and is not limited thereto.
In the following example, the Kamares construction method connecting fitting (1), which has a rectangular shape in plan view according to the present invention, is used to perform the tensioning work. However, the invention is not limited to this, and any Kamares construction method connecting fitting (1) that can perform the following steps and is obvious to those skilled in the art may be used.
図１は、本発明に係るカマレス工法用連結金具（１）を使用した際のがいし装置全体の側面図である。
図１に示したがいし装置のように、緊線（弛度調整）作業の際は、カマレス工法用連結金具（１）の緊線用孔（９）と、電線側にあるクレビス（６）又はクランプ（図示せず）、及び鉄塔側にあるバーニヤ金具（７）又はクレビスの連結部とをそれぞれ連結させる。
また、緊線（弛度調整）作業時に、防護用孔（１０）と鉄塔の二重防護引留箇所を繋ぐことで二重防護を同時におこなうことが可能である。
緊線（弛度調整）作業及び二重防護等の機能を持ち合わせた本発明に係るカマレス工法用連結金具（１）を用いることで、従来の図５及び図６で示した工法で用いられる緊線用工具（２）の取付けや取り外し作業が不要となり、且つ二重防護のために径間電線へカムアロング（５）を取り付ける必要が無くなることから、作業員の労力を大幅に低減でき、施工性及び安全性を向上させることが可能となる。
Figure 1 is a side view of the entire insulator device when using the connecting fitting (1) for the Kamares construction method according to the present invention.
As shown in the insulator device in Figure 1, during tensioning (sag adjustment) work, the tensioning hole (9) of the connecting fitting (1) for the Kamares method is connected to the clevis (6) or clamp (not shown) on the power line side, and to the vernier fitting (7) or clevis connecting part on the tower side, respectively.
Furthermore, during tensioning (sag adjustment) work, it is possible to perform double protection simultaneously by connecting the protective hole (10) with the double protection anchoring point of the transmission tower.
By using the Kamares construction method connecting fitting (1) according to the present invention, which has functions such as tensioning (sag adjustment) work and double protection, the installation and removal work of the tensioning tool (2) used in the conventional construction method shown in Figures 5 and 6 becomes unnecessary, and the need to attach a cam-along (5) to the spandex wire for double protection is eliminated, thereby significantly reducing the labor of workers and improving workability and safety.
本発明に係るカマレス工法用連結金具（１）を使用したがいし装置では、２連耐張固定ヨーク（１２）の取込用孔（１３）を、従来の７０ｍｍ間隔に加え、導体間隔と同じ間隔（４００ｍｍ等）にも設けた。
これにより、２連耐張固定ヨーク（１２）の取込用孔（１３）の間隔が導体間隔と同じ間隔であるため、多導体２条同時取込時における金車等の接近を回避でき、各電線を軸線上で取り込むことが可能となった。
In an insulator device using the connecting fitting (1) for the Kamares construction method according to the present invention, the intake holes (13) for the double tension fixing yoke (12) are provided not only at the conventional 70 mm intervals, but also at the same interval as the conductor spacing (400 mm, etc.).
As a result, the spacing of the intake holes (13) of the double tension fixing yoke (12) is the same as the spacing between conductors, which makes it possible to avoid the proximity of pulleys, etc., when two multi-conductor wires are taken in simultaneously, and to take in each wire on the axis.
図２は、本発明の一実施形態である平面視四角形状のカマレス工法用連結金具（１）を示している。本願発明に係るカマレス工法用連結金具（１）を用いたカマレス工法は、図６で示した従来の工法と同様に、緊線用孔（９）を用いて電線を取り込む工法であるが、従来の工法で用いられる鍛造品及び鋳造品と比較し、本発明に係るカマレス工法用連結金具（１）は鋼板品であるため、製造性が良く、工事用孔（１１）の追加等の改良の余地がある。 Figure 2 shows a rectangular-shaped connecting fitting (1) for the Kamares construction method, which is one embodiment of the present invention. The Kamares construction method using the Kamares construction method connecting fitting (1) according to the present invention is a method of incorporating electric wires using tensioning holes (9), similar to the conventional method shown in Figure 6. However, compared to the forged and cast products used in the conventional method, the Kamares construction method connecting fitting (1) according to the present invention is made of steel plate, resulting in better manufacturability and room for improvement, such as the addition of construction holes (11).
本発明に係るカマレス工法用連結金具（１）には、圧延鋼などの鋼板品を用いることが好ましいが、電線の緊線作業等で用いられ、製造性が良く、当業者に自明のものであれば、いかなるものでも用いることができる。 While it is preferable to use steel plates such as rolled steel for the connecting fitting (1) for the Kamares construction method according to the present invention, any material can be used as long as it is used in wire tensioning work, has good manufacturability, and is obvious to those skilled in the art.
図３は、本発明に係るカマレス工法用連結金具（１）を使用した際のがいし装置の一部を示しており、一実施形態として、（ａ）は平面視四角形状、（ｂ）は三角形状、（ｃ）は扇形状のカマレス工法用連結金具（１）を示している。
図３の（ａ）のように、カマレス工法用連結金具（１）を図１から反転させて使用しても良い。
Figure 3 shows a part of an insulator device when using the connecting fitting (1) for the Kamares construction method according to the present invention. As one embodiment, (a) shows a rectangular shape in plan view, (b) shows a triangular shape, and (c) shows a fan shape for the connecting fitting (1) for the Kamares construction method.
As shown in Figure 3(a), the connecting fitting (1) for the Kamares construction method may be used in reverse from Figure 1.
図４は、図３のカマレス工法用連結金具（１）に工事用孔（１１）を追加したものを示しており、一実施形態として、図３同様に（ａ）は平面視四角形状、（ｂ）は三角形状、（ｃ）は扇形状のカマレス工法用連結金具（１）を示している。 Figure 4 shows the Kamares construction method connecting fitting (1) from Figure 3 with the addition of a construction hole (11). As one embodiment, similar to Figure 3, (a) shows a rectangular shape in plan view, (b) shows a triangular shape, and (c) shows a fan shape for the Kamares construction method connecting fitting (1).
本発明に係るカマレス工法用連結金具（１）は、製造性が良い鋼板品であるため、緊線（弛度調整）作業をおこなう現地の条件にあわせて、連結させる方向を変更したり、使用する緊線用工具（２）の孔径に合わせた形状にしたりする等、用途に応じた仕様変更が可能であるため、あらゆる条件下の緊線作業に柔軟に対応することが可能である。 The connecting fitting (1) for the Kamares construction method according to the present invention is made of a steel plate product with good manufacturability. Therefore, it is possible to modify its specifications according to the application, such as changing the direction of connection or adjusting the shape to match the hole diameter of the tensioning tool (2) used, in accordance with the site conditions where tensioning (sag adjustment) work is performed. This allows for flexible adaptation to tensioning work under a wide range of conditions.
図５及び図６は、従来から用いられる緊線用金具（３）に緊線用工具（２）を連結させて緊線（弛度調整）作業をおこなう際のがいし装置全体の側面図である。
従来の緊線（弛度調整）作業では、緊線用金具（３）や緊線用工具（２）を用いて電線を取り込み、径間電線に身を乗り出してカムアロング（５）を取り付け、事故防止のための二重防護（８）をおこなっていた。
図５は、緊線（弛度調整）作業時に、がいし装置に緊線用工具（２）を連結して電線を取り込む従来の工法を示している。
Figures 5 and 6 are side views of the entire insulator device when a tensioning tool (2) is connected to a conventional tensioning fitting (3) to perform tensioning (sag adjustment) work.
In conventional wire tensioning (sag adjustment) work, wire tensioning fittings (3) and wire tensioning tools (2) were used to pull in the wires, and the cam-along (5) was attached to the wires between the spans, providing double protection (8) to prevent accidents.
Figure 5 shows a conventional method of securing electric wires by connecting a tensioning tool (2) to the insulator device during tensioning (sag adjustment) work.
従来の緊線（弛度調整）作業は、緊線用工具（２）及びカムアロング（５）の取付けや取外し作業をおこなう必要から、効率が悪く時間を要していた。
本発明に係るカマレス工法用連結金具（１）を用いた緊線（弛度調整）作業では、例えば、４導体の耐張装置を両回線工事する場合、４導体の耐張装置が鉄塔１基に１２連設置されているため、４８個のカムアロング（５）の取付けや取外し作業を省略することが出来る。これにより作業員の労力が大幅に低減され施工性及び安全性を向上させることが可能となった。
Conventional wire tensioning (sag adjustment) work was inefficient and time-consuming because it required the installation and removal of wire tensioning tools (2) and cam-alongs (5).
In the tensioning (sag adjustment) work using the connecting fitting (1) for the Kamares construction method according to the present invention, for example, when installing tension devices for four conductors on both circuits, since 12 tension devices for four conductors are installed on one tower, the installation and removal work of 48 cam-alongs (5) can be omitted. This significantly reduces the labor required by workers and improves workability and safety.
図６は、緊線（弛度調整）作業時に、がいし装置に緊線用金具（３）に付随するＹ型金具（緊線リンク）（４）を連結して電線を取り込む従来の工法を示している。Ｙ型金具（緊線リンク）（４）に電線を連結させることができるため、図５の工法と比較して、使用する緊線用工具（２）を省略することができるものの、二重防護（８）をおこなう際には、いずれの工法でも作業員が径間電線に身を乗り出してカムアロング（５）の取付けや取外し作業をおこなう必要がある。 Figure 6 shows a conventional method of securing electric wires during tensioning (sag adjustment) work by connecting a Y-shaped fitting (tensioning link) (4) attached to the tensioning fitting (3) to the insulator device. Because the electric wire can be connected to the Y-shaped fitting (tensioning link) (4), the tensioning tool (2) used can be omitted compared to the method in Figure 5. However, when performing double protection (8), in either method, workers need to lean over the spand electric wires to install and remove the cam-along (5).
事故防止の二重防護（８）においては、カムアロング（５）の取付けや取外し作業を完全に無くすことができるため、完全カマレス化が可能となる。
完全カマレス化により、作業員の大幅な労力低減による施工性の向上及び作業員並びに工具類の落下リスクの大幅な低減による安全性向上を実現することができる。
In the double protection for accident prevention (8), the installation and removal of the cam-along (5) can be completely eliminated, making complete cam-less operation possible.
By completely eliminating the need for a cam, it is possible to improve work efficiency by significantly reducing the labor required by workers, and to improve safety by significantly reducing the risk of workers and tools falling.
［従来工法と本発明に係るカマレス工法用連結金具を用いた緊線工法の作業時間の比較］
本発明に係るカマレス工法用連結金具を用いた緊線工法における工程毎の平均作業時間（分）と従来の緊線工法に要する作業時間を比較した。
[Comparison of working time between conventional methods and the tensioning method using the connecting fittings for the Kamares method according to the present invention]
The average working time (minutes) for each step in the tensioning method using the connecting fittings for the Kamares method according to the present invention was compared with the working time required for the conventional tensioning method.
従来の緊線工法では、本発明に係る緊線工法の工程に加えて、緊線用工具等を連結させる工程、カムアロングの取付け及び取外しを含む二重防護作業に必要な工程が加わる。 Conventional wire tensioning methods, in addition to the steps of the wire tensioning method according to the present invention, include additional steps necessary for double protection work, such as connecting wire tensioning tools and installing and removing cam-alongs.
表１は本発明に係る緊線工法に必要な平均時間と、従来の緊線工法に必要な時間を比較したものである。 Table 1 compares the average time required for the tensioning method according to the present invention with the time required for the conventional tensioning method.
表１に記載の通り、本発明に係る緊線工法に必要な作業時間（分）は従来工法と比較し、合計で約１００分短縮されたことがわかった。
この結果より、本発明に係る緊線工法における施工性は、従来の工法よりも顕著に向上していることが明らかとなった。
As shown in Table 1, the total working time (in minutes) required for the tensioning method according to the present invention was reduced by approximately 100 minutes compared to the conventional method.
These results clearly demonstrate that the constructability of the tensioning method according to the present invention is significantly improved compared to conventional methods.
本発明に係るカマレス工法用連結金具及びこれを用いたカマレス工法は、がいし装置に緊線（弛度調整）作業及び二重防護の機能を持ち合わせた改良型の連結金具（リンク）を用いることにより、作業員の大幅な労力低減による施工性向上、及び工具類の落下リスクの大幅な低減による安全性向上に貢献することができる。
それゆえに、本発明に係るカマレス工法用連結金具及びこれを用いたカマレス工法は、鉄塔間における緊線作業に好適に利用できる。
The Kamares construction method and the Kamares construction method using the present invention contribute to improved workability by significantly reducing the labor required by workers and improved safety by significantly reducing the risk of tools falling, by using an improved connecting fitting (link) that has the functions of tensioning (sag adjustment) work and double protection in the insulator device.
Therefore, the connecting fitting for the Kamares construction method according to the present invention and the Kamares construction method using the same can be suitably used for tensioning work between transmission towers.
１ カマレス工法用連結金具
２ 緊線用工具
３ 緊線用金具
４ Ｙ型金具（緊線リンク）
５ カムアロング
６ クレビス
７ バーニヤ金具
８ 二重防護
９ 緊線用孔
１０ 防護用孔
１１ 工事用孔
１２ ２連耐張固定ヨーク
１３ 取込用孔
1. Connecting fittings for the Kamares construction method 2. Tensioning tools 3. Tensioning fittings 4. Y-shaped fittings (tensioning links)
5 Cam-along 6 Clevis 7 Vernier fitting 8 Double protection 9 Tensioning hole 10 Protection hole 11 Construction hole 12 Double tension fixing yoke 13 Intake hole
Claims (5)
前記連結金具は、前記電線側にあるクレビス又はクランプと鉄塔側にあるバーニヤ金具又はクレビスの間に連結され、かつこの連結金具は、連結される緊線用孔以外の少なくとも１か所以上に二重防護作業のための防護用孔が設けられたことを特徴とする、カマレス工法用連結金具。 A connecting fitting for the Kamares method used for tensioning electric wires installed between transmission towers, and for double protection work during said tensioning,
The connecting fitting is connected between a clevis or clamp on the electric wire side and a vernier fitting or clevis on the tower side, and the connecting fitting is characterized in that it is provided with protective holes for double protection work in at least one location other than the tensioning hole to which it is connected.
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