JP4121081B2 - Cam Along for securing overhead wires - Google Patents

Cam Along for securing overhead wires Download PDF

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JP4121081B2
JP4121081B2 JP2003288597A JP2003288597A JP4121081B2 JP 4121081 B2 JP4121081 B2 JP 4121081B2 JP 2003288597 A JP2003288597 A JP 2003288597A JP 2003288597 A JP2003288597 A JP 2003288597A JP 4121081 B2 JP4121081 B2 JP 4121081B2
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clamp
link
pivot
arm
cam along
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JP2005057948A (en
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浩 田島
光司 岩田
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Sanwa Tekki Corp
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Description

本発明は、既設の架空地線を光ファイバ複合架空地線に張り替える作業において、架空地線又は光ファイバ複合架空地線を鉄塔の碍子連から取り外し又は碍子連に接続する作業の間、鉄塔に架空地線等を仮留めしておくための架線引き留め用カムアロングに関するものである。   The present invention relates to an operation of replacing an existing overhead ground wire with an optical fiber composite overhead ground wire during an operation of removing or connecting the overhead ground wire or the optical fiber composite overhead ground wire from the steel tower of the steel tower. The present invention relates to an overhead wire retaining cam along for temporarily attaching an overhead wire or the like.

既設の架空地線を撤去したり新設の光ファイバ複合架空地線を引き留めるためには、鉄塔に結合したカムアロングに仮留めし一旦張力を預けてから取り外し又は引き留め作業をを行う。従来のカムアロングは、電線を把持する二つ割りのクサビ部材と、このクサビ部材が挿入される二つ割りのカムアロング本体と、カムアロング本体に一体に結合するアームとを備えている。クサビ部材の外周面はテーパー状に形成され、カムアロング本体の内周面もクサビ部材の外周面に対応するテーパー状に形成されている。電線を挿入したクサビ部材をカムアロング本体に装着して、鉄塔にワイヤ等を介して結合されたアームを引き寄せると、クサビ部材がテーパー面に沿ってカムアロング本体に引き込まれ、電線を強く締め付けて把持する。二つ割りのカムアロング本体は一方の側部で蝶着され、他方の側部が開閉可能に構成され、両者間をボルトなどで締め付けて留めるようになっている。
特開平07−177626号公報
In order to remove an existing overhead ground wire or to keep a new optical fiber composite overhead ground wire, temporarily hold it on a cam-along coupled to a steel tower, temporarily remove the tension, and then perform removal or retention work. The conventional cam along includes a split wedge member that grips the electric wire, a split cam along main body into which the wedge member is inserted, and an arm that is integrally coupled to the cam along main body. The outer peripheral surface of the wedge member is formed in a tapered shape, and the inner peripheral surface of the cam along body is also formed in a tapered shape corresponding to the outer peripheral surface of the wedge member. When the wedge member into which the electric wire is inserted is attached to the cam along body and the arm connected to the steel tower via the wire is pulled, the wedge member is drawn into the cam along body along the taper surface, and the electric wire is strongly tightened and gripped. . The split cam along body is hinged on one side, and the other side is configured to be openable and closable.
Japanese Patent Application Laid-Open No. 07-177626

上記従来のカムアロングにおいては、カムアロング本体とクサビ部材とが別体を成し、クサビ部材に電線をセットしてからカムアロング本体にクサビ部材をセットしてカムアロング本体相互間を留めるので、各部材が分離する構造のために塔上作業時に離脱して落下するおそれがあり、下方に位置する送電線を引き留める碍子連に当たって破損させたり、作業員等に当たる危険性がある。   In the conventional cam along, the cam along main body and the wedge member are separated, and after setting the electric wire on the wedge member, the wedge member is set on the cam along main body and the cam along the main body is held between them. Because of this structure, there is a risk of detaching and falling when working on the tower, and there is a risk of hitting the insulators that hold the transmission line located below and causing damage to workers.

上記課題を解決するため、本発明においては、送電鉄塔Tに結合されたワイヤWを連結するアーム2と、架空線Gを内側に受け入れて把持する対向一対の挟持片3a,3bを備えたクランプ3とを第1及び第2のリンク4,5で連結する。アーム2とクランプ3との延線方向の相対移動により、クランプ3の挟持片3a,3b相互間を開閉可能とする。第1のリンクの一端は、アーム側に位置する一方の挟持片3aに枢着され、第2のリンクの一端は、他方の挟持片3bに枢着されると共に、中間部が、一方の挟持片3aに枢着される。第2のリンクを一方の挟持片3aに枢支する枢軸8、他方の挟持片3bに枢支する枢軸8又はアーム2に枢支する枢軸9のうちの少なくとも一つの枢軸、例えば枢軸9は、第2のリンク5から所定長さ延出する長軸とされ、当該第2のリンク5を当該長軸9上でクランプ3に接近した閉鎖位置とクランプ3から離れた開放位置との間で移動可能に保持し、他の2つの枢軸8,8の端部は、第2のリンク5に対して抜き差し自在とされ、第2のリンク5が閉鎖位置にあるとき当該2つの枢軸8,8に係合し、第2のリンク5が開放位置にあるとき当該2つの枢軸8,8から抜け出てクランプ3との間に隙間を形成するよう構成される。第2のリンク5が開放位置にあるとき、当該第2のリンク5とクランプ3との間の隙間を通して挟持片3a,3b間に架空線Gを挿入できるようにした。 In order to solve the above problems, in the present invention, a clamp having an arm 2 for connecting a wire W coupled to a power transmission tower T and a pair of opposing clamping pieces 3a and 3b for receiving and holding an overhead wire G inside. 3 is connected to the first and second links 4 and 5. By the relative movement in the extending direction between the arm 2 and the clamp 3, the clamping pieces 3a and 3b of the clamp 3 can be opened and closed. One end of the first link is pivotally attached to one clamping piece 3a located on the arm side, one end of the second link is pivotally attached to the other clamping piece 3b, and an intermediate portion is clamped to one It is pivotally attached to the piece 3a. The pivot 8 that pivotally supports the second link on one clamping piece 3a , the pivot 8 that pivots on the other clamping piece 3b, or the pivot 9 that pivots on the arm 2, for example, the pivot 9 is A long axis extending a predetermined length from the second link 5, the second link 5 is moved on the long axis 9 between a closed position approaching the clamp 3 and an open position away from the clamp 3. The ends of the other two pivots 8, 8 are detachable with respect to the second link 5, and when the second link 5 is in the closed position, the two pivots 8, 8 When engaged, the second link 5 is configured to come out of the two pivot shafts 8 and 8 to form a gap between the clamp 3 when the second link 5 is in the open position. When the second link 5 is in the open position, the overhead wire G can be inserted between the sandwiching pieces 3 a and 3 b through the gap between the second link 5 and the clamp 3 .

本発明においては、工具全体が常時一体を成し、構成部品が分離することがないので、架線をセットする塔上作業時に部品の落下を防止でき、碍子連の破損等を防止することができるし、作業者等の安全性を向上させることができる。   In the present invention, since the entire tool is always integrated and the components are not separated, it is possible to prevent the parts from falling during the tower operation for setting the overhead wire, and to prevent the breakage of the insulator series, etc. In addition, the safety of workers and the like can be improved.

図面を参照して本発明の実施の一形態を説明する。
図1において、送電鉄塔Tに張られた既設の架空地線Gを光ファイバ複合架空地線に張り替える工事において、架空地線Gを碍子連から取り外す作業の間、架空地線Gを鉄塔Tにカムアロング1で別途仮止めして一旦張力を預ける。カムアロング1は、鉄塔Tに結合したワイヤWに連結されるアーム2と、架空地線Gを把持するクランプ3と、アーム2にクランプ3を結合する前後のリンク4,5とを備えている。
An embodiment of the present invention will be described with reference to the drawings.
In FIG. 1, in the work of replacing the existing overhead ground wire G stretched on the transmission tower T with the optical fiber composite overhead ground wire, the overhead ground wire G is removed from the steel tower T during the work of removing the overhead ground wire G from the insulator series. Temporarily secure it separately with Cam Along 1 and leave the tension once. The cam along 1 includes an arm 2 coupled to a wire W coupled to the steel tower T, a clamp 3 that holds the overhead ground wire G, and front and rear links 4 and 5 that couple the clamp 3 to the arm 2.

図2乃至図5に示すように、アーム2は延線方向にほぼ沿うように伸び、その一端に鉄塔Tに連結されたワイヤWを接続するための引き手2aを有する。   As shown in FIGS. 2 to 5, the arm 2 extends substantially along the extending direction, and has a handle 2 a for connecting a wire W connected to the steel tower T at one end thereof.

クランプ3は、内側に架空地線Gを受け入れるための長手方向の円弧状溝3cを夫々有する対向一対の挟持片3a,3bを備えている。   The clamp 3 includes a pair of opposing sandwiching pieces 3a and 3b each having an arcuate groove 3c in the longitudinal direction for receiving the overhead ground wire G inside.

リンク4はアーム2及びクランプ3を両側から挟むように左右一対を成し、一端がアーム2に他端がクランプ3の一方の挟持片3aにボルト6及びナット7で回転自在に夫々連結されている。   The link 4 has a pair of left and right so as to sandwich the arm 2 and the clamp 3 from both sides, and one end is connected to the arm 2 and the other end is rotatably connected to one holding piece 3a of the clamp 3 by a bolt 6 and a nut 7, respectively. Yes.

リンク5はリンク4と前後に間隔を置いてアーム2に枢着される。リンク5は中間部が屈曲して略くの字状を成し、アーム2及びクランプ3を両側から挟む左右一対のリンク片5a,5bを備えている。リンク片5a,5bの一端はアーム2に枢軸8で回転自在に軸支され、中間部は長枢軸9で回転自在に軸支され、他端は挟持片3bに枢軸8で回転自在に軸支される。長枢軸9は側方に延出しており、アーム2の反対側のリンク片5bは長枢軸9上を移動でき、クランプ3の挟持片3a,3b間に架空地線等Gを挿入できるようにクランプ3から離して配置できる。リンク片5bは長枢軸9に螺合する蝶ナット10により位置決めできる。リンク片5bの両端部は、枢軸8に抜き差し自在に挿通される。   The link 5 is pivotally attached to the arm 2 at a distance from the link 4 in the front-rear direction. The link 5 has a substantially U-shape with an intermediate portion bent, and includes a pair of left and right link pieces 5a and 5b sandwiching the arm 2 and the clamp 3 from both sides. One end of each of the link pieces 5a and 5b is pivotally supported on the arm 2 by a pivot 8, the middle part is pivotally supported by a long pivot 9, and the other end is pivotally supported by a pinch 8b by a pivot 8. Is done. The long pivot 9 extends laterally, and the link piece 5b on the opposite side of the arm 2 can move on the long pivot 9 so that an aerial ground wire G can be inserted between the clamping pieces 3a, 3b of the clamp 3. It can be arranged away from the clamp 3. The link piece 5b can be positioned by a wing nut 10 screwed onto the long shaft 9. Both end portions of the link piece 5b are removably inserted into the pivot shaft 8.

このカムアロング1においては、鉄塔Tに連結したワイヤWを引き手2aに結合しておき、鉄塔Tに張られている架空地線Gをクランプ3に把持させて仮留めする。クランプ3は、蝶ナット10を緩めて長枢軸9上でリンク5bを側方へ移動させて、枢軸8から抜けば、図6及び図7に示すように、クランプ3との間隔をあけることができるので、挟持片3a,3a間に架空地線Gを挿入できる。このとき、蝶ナット10、長枢軸9及びリンク5bは他の部材から分離することなく、カムアロング1が一体に維持されて離脱する部品がない。架空地線Gをクランプ3内に配置して、リンク5bに枢軸8を挿通させつつクランプ3にあてがい、蝶ボルト10を締め込めば架空地線Gがクランプ3から離脱することなく保持される。この状態で鉄塔T上からワイヤWを引けば、延線方向にずれて互い違いの状態になっているクランプ3の挟持片3a,3aがアーム2のワイヤWの移動と共にリンク4,5によって、挟持片3a,3aが互いに軸方向及び間隔方向に接近し、両者間の架空地線Gを強く挟み込んで把持する。従って、架空地線Gの張力が強いほどクランプ3は架空地線Gを強く把持する。鉄塔Tに張られた架空地線Gはカムアロング1側に張力が預けられるので、碍子連から取り外すことができる。
なお、長枢軸9はリンク5bをクランプ3の挟持片3aに枢着させるものとしたが、これに代えて他の枢軸8を長尺に構成してリンク5bを他の挟持片3bやアーム2に保持するように構成してもよい。
In this cam along 1, the wire W connected to the steel tower T is coupled to the puller 2a, and the overhead ground wire G stretched on the steel tower T is gripped by the clamp 3 and temporarily fixed. If the clamp 3 loosens the wing nut 10 and moves the link 5b to the side on the long pivot 9 and then comes out of the pivot 8, the clamp 3 can be spaced from the clamp 3, as shown in FIGS. Since it can do, the overhead ground wire G can be inserted between the clamping pieces 3a and 3a. At this time, the wing nut 10, the long pivot 9 and the link 5b are not separated from the other members, and the cam along 1 is maintained integrally and there is no part to be detached. When the overhead ground wire G is disposed in the clamp 3, the pivot 8 is inserted into the link 5 b and the clamp 3 is applied, and the butterfly bolt 10 is tightened, the overhead ground wire G is held without being detached from the clamp 3. If the wire W is pulled from above the steel tower T in this state, the clamping pieces 3a and 3a of the clamp 3 which are shifted in the extending direction and are alternately arranged are clamped by the links 4 and 5 along with the movement of the wire W of the arm 2. The pieces 3a, 3a approach each other in the axial direction and the interval direction, and hold and hold the aerial ground wire G between them strongly. Therefore, as the tension of the overhead ground wire G increases, the clamp 3 grips the overhead ground wire G more strongly. Since the overhead ground wire G stretched on the steel tower T is entrusted with tension on the cam along 1 side, it can be removed from the insulator series.
The long pivot 9 pivotally attaches the link 5b to the clamping piece 3a of the clamp 3. However, instead of this, the other pivot 8 is configured to be long and the link 5b is connected to the other clamping piece 3b or the arm 2. You may comprise so that it may hold | maintain.

本発明のカムアロングにおいては、既設架空地線を光ファイバ複合架空架空地線に張り替える作業のみならず、鉄塔に結合したワイヤに延線対象の電線等の架空線を接続して鉄塔に仮留めするときに広く適用することができる。   In the cam along according to the present invention, not only the work of replacing the existing overhead ground wire with the optical fiber composite overhead ground wire, but also the overhead wire such as the wire to be extended is connected to the wire connected to the steel tower and temporarily fixed to the steel tower. Can be widely applied when

本発明に係るカムアロングの使用状態の正面図である。It is a front view of the use condition of the cam along which concerns on this invention. カムアロングの斜視図である。It is a perspective view of a cam along. カムアロングの正面図である。It is a front view of a cam along. カムアロングの平面図である。It is a top view of a cam along. カムアロングの側面図である。It is a side view of a cam along. クランプを開放した状態のカムアロングの正面図である。It is a front view of the cam along with the clamp opened. クランプを開放した状態のカムアロングの側面図である。It is a side view of the cam along with the clamp opened.

符号の説明Explanation of symbols

1 カムアロング
2 アーム
3 クランプ
3a 挟持片
3b 挟持片
4 リンク
5 リンク
5a リンク片
5b リンク片
9 長枢軸
10 蝶ナット
T 送電鉄塔
G 架空地線
W ワイヤ
DESCRIPTION OF SYMBOLS 1 Cam along 2 Arm 3 Clamp 3a Clamping piece 3b Clamping piece 4 Link 5 Link 5a Link piece 5b Link piece 9 Long pivot 10 Wing nut T Power transmission tower G Overhead ground wire W Wire

Claims (2)

送電鉄塔に結合されたワイヤを連結するアームと、
架空線を内側に受け入れて把持する対向一対の挟持片を備えたクランプと、
前記アームとクランプとを連結して、アームとクランプとの延線方向の相対移動によりクランプの挟持片相互間を開閉するように延線方向に離れて配置され、一端が前記クランプに、他端が前記アームにそれぞれ枢着された第1及び第2のリンクとを具備する架線引き留め用カムアロングにおいて、
前記第1のリンクの一端は、前記クランプの前記アーム側に位置する一方の前記挟持片に枢着され、
前記第2のリンクの一端は、前記クランプの他方の前記挟持片に枢着されると共に、中間部が、一方の前記挟持片に枢着され、
前記第2のリンクを一方の前記挟持片に枢支する枢軸、他方の前記挟持片に枢支する枢軸又は前記アームに枢支する枢軸のうちの少なくとも一つの枢軸は、第2のリンクから所定長さ延出する長軸とされ、当該第2のリンクを当該長軸上で前記クランプに接近した閉鎖位置と前記クランプから離れた開放位置との間で移動可能に保持し、他の2つの枢軸の端部は、第2のリンクに対して抜き差し自在とされ、第2のリンクが閉鎖位置にあるとき当該2つの枢軸に係合し、第2のリンクが開放位置にあるとき当該2つの枢軸から抜け出て前記クランプとの間に隙間を形成するよう構成され、
前記第2のリンクが開放位置にあるとき、当該第2のリンクと前記クランプとの隙間を通して挟持片間に架空線を挿入できるようにしたことを特徴とする架線引き留め用カムアロング。
An arm for connecting wires coupled to the transmission tower;
A clamp with a pair of opposing clamping pieces that receive and hold an overhead wire inside;
The arm and the clamp are connected, and the arm and the clamp are arranged apart from each other in the extending direction so as to open and close the clamp clamping pieces by relative movement in the extending direction, and one end is connected to the clamp and the other end An overhanging cam-along comprising first and second links pivotally attached to the arms, respectively .
One end of the first link is pivotally attached to one of the clamping pieces located on the arm side of the clamp,
One end of the second link is pivotally attached to the other clamping piece of the clamp, and an intermediate portion is pivotally attached to the one clamping piece,
At least one of the pivot that pivotally supports the second link to one of the sandwiching pieces, the pivot that pivotally supports the other sandwiching piece, or the pivot that pivots to the arm is predetermined from the second link. A long axis extending in length, and holding the second link movably between a closed position close to the clamp and an open position away from the clamp on the long axis; The end of the pivot is detachable with respect to the second link and engages the two pivots when the second link is in the closed position and the two links when the second link is in the open position. Configured to exit from the pivot and form a gap with the clamp;
An overhead wire retaining cam along characterized in that an overhead wire can be inserted between the holding pieces through the gap between the second link and the clamp when the second link is in the open position .
前記長軸には蝶ナットが螺合され、当該蝶ナットの螺合位置を変更することにより、前記第2のリンクを閉鎖位置と開放位置とに位置決め可能としたことを特徴とする請求項1に記載の架線引き留め用カムアロング。 The wing nut is screwed onto the long shaft, and the second link can be positioned in a closed position and an open position by changing a screwing position of the wing nut. Cam Along for securing overhead wires as described in 1.
JP2003288597A 2003-08-07 2003-08-07 Cam Along for securing overhead wires Expired - Fee Related JP4121081B2 (en)

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