JP2001069651A - Reverse compression anchor clamp - Google Patents
Reverse compression anchor clampInfo
- Publication number
- JP2001069651A JP2001069651A JP23666199A JP23666199A JP2001069651A JP 2001069651 A JP2001069651 A JP 2001069651A JP 23666199 A JP23666199 A JP 23666199A JP 23666199 A JP23666199 A JP 23666199A JP 2001069651 A JP2001069651 A JP 2001069651A
- Authority
- JP
- Japan
- Prior art keywords
- clevis
- clamp
- base
- hole
- clamp body
- 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.)
- Granted
Links
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は電線等として用いる
鋼芯アルミ撚線を鉄塔等に引留る引留クランプに関し、
圧縮による塑性変形で鋼芯アルミ撚線を固定する圧縮形
引留クランプの中でも、特に逆圧縮と称し、電線の笑い
を防ぐために、電線側より引留側に向かって順次圧縮し
てゆく逆圧縮型(笑い防止型)電線引留クランプに関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an end clamp for holding a steel core aluminum stranded wire used as an electric wire or the like to a steel tower or the like.
Among the compression type retention clamps that fix steel core aluminum stranded wires by plastic deformation due to compression, the reverse compression type, which is called reverse compression, in which the wire is compressed sequentially from the wire side to the retention side to prevent laughter of the wire ( The present invention relates to an electric wire anchoring clamp.
【0002】[0002]
【背景技術】電線の引留めに用いる通常の笑い防止形圧
縮形引留クランプは、図4に示すように、貫通した中心
孔1A中に先端から鋼芯アルミ撚線2Aを導入できるア
ルミニウム製のクランプ本体3Aを備え、このクランプ
本体3Aの基端部3aには鋼芯アルミ撚線2Aの芯部鋼
線2aの先端部に固定されるクレビス4Aが挿入され、
クランプ本体3Aの筒状部3b及びクレビス4Aの接手
筒4aが例えば6角断面に外部から圧縮加工される。つ
まり、クレビス4Aの接手筒4a中には引き止められる
鋼芯アルミ撚線2Aのアルミ撚線2bから露呈された芯
部鋼線2aが挿入圧縮され、外周面を凹凸面とされた前
記接手筒4a及びクランプ本体3Aの筒状部3bの圧縮
変形により、鋼芯アルミ撚線2Aの先端部がクランプ本
体3A及びクレビス4Aに一体化される。2. Description of the Related Art As shown in FIG. 4, an ordinary laughable anti-compression type clamping clamp used for retaining an electric wire is an aluminum clamp capable of introducing a steel core aluminum stranded wire 2A from the tip into a penetrated center hole 1A. A clevis 4A fixed to the distal end of the core steel wire 2a of the steel core aluminum stranded wire 2A is inserted into the base end 3a of the clamp body 3A,
The cylindrical portion 3b of the clamp body 3A and the joint tube 4a of the clevis 4A are externally compressed into a hexagonal section, for example. That is, the core steel wire 2a exposed from the aluminum stranded wire 2b of the steel core aluminum stranded wire 2A to be retained is inserted and compressed into the joint tube 4a of the clevis 4A, and the joint tube 4a having an uneven outer peripheral surface. In addition, due to the compression deformation of the cylindrical portion 3b of the clamp body 3A, the distal end of the steel core aluminum stranded wire 2A is integrated with the clamp body 3A and the clevis 4A.
【0003】そして、前記クランプ本体3Aの外部に位
置されたクレビス4Aの引留ヘッド4bには鉄塔等から
誘導する引留ワイヤ(図示せず)が掛けられ、クランプ
本体3Aの前記基端部3aに接手ボルト5Aで固定され
るジャンパソケット6Aに対しては、鉄塔等を迂回する
ジャンパ撚線7Aが固定されることになる。[0003] An anchoring wire (not shown) guided from a steel tower or the like is hung on the anchoring head 4b of the clevis 4A located outside the clamp body 3A, and a joint is provided with the base end 3a of the clamp body 3A. A jumper stranded wire 7A that bypasses a steel tower or the like is fixed to the jumper socket 6A fixed with the bolt 5A.
【0004】ところで、前述したような笑い防止形圧縮
形引留クランプにおける圧縮作業は、アルミクランプ
(クランプ本体3)の圧縮は圧縮部分がある長さを有し
ているので、一度で圧縮できず引留側から電線側に向か
って順次圧縮して行く。しかし、このように圧縮すると
電線にいわゆる”笑い”の生じる恐れがあるので、逆圧
縮と称し、電線側より引留側に向かって圧縮する方法が
ある。逆圧縮工法の場合、アルミクランプに鋼クランプ
(クレビス4A)を突き当てるとき、予め、アルミクラ
ンプの圧縮による伸長を考慮して、アルミクランプ端と
鋼クランプ端すなわちコッタ部との間に間隔(L)を設
けて、鋼クランプをセットする。そうして圧縮を始める
が、圧縮するに従って、電線のよりが戻り、鋼クランプ
も鋼心線のよりと反対方向にねじられる現象を生じるの
で、一般には、このねじれが起こらないようにしてい
る。In the compression operation of the above-mentioned laughing prevention type compression clamp, the compression of the aluminum clamp (clamp main body 3) cannot be performed at once because the compression portion has a certain length. From the side to the wire side. However, since such compression may cause so-called "laughing" to the electric wire, there is a method called "reverse compression", in which the electric wire is compressed from the electric wire side toward the retaining side. In the case of the reverse compression method, when the steel clamp (clevis 4A) is abutted against the aluminum clamp, the distance (L) between the aluminum clamp end and the steel clamp end, that is, the cotter portion, is considered in advance in consideration of the expansion due to the compression of the aluminum clamp. ) And set the steel clamp. Compression then begins, but as the compression twists, the wire twists back and the steel clamp also twists in the opposite direction to the steel core wire, so this twisting is generally avoided.
【0005】[0005]
【発明が解決しようとする課題】このような”ねじれ現
象”を阻止するため、クランプ本体3Aに対するクレビ
ス4Aのねじれ回転運動を防止する固定具が、実公昭5
8−47796号公報により提案されている。即ち、図
5は同公報で提案された固定具8Aであり、この固定具
8Aはクランプ本体3Aの基端部3aに袴座できる一対
の袴座脚8aを有し、これらの袴座脚8aの上部には略
水平方向に張り出す延長片8bが一体に形成され、この
延長片8bにクレビス4Aの引留ヘッド4bを挟持でき
る挟持片8cが支持される。In order to prevent such a "twisting phenomenon", a fixture for preventing the torsional rotational movement of the clevis 4A with respect to the clamp body 3A is disclosed in Japanese Utility Model Publication No. Sho.
No. 8-47796. That is, FIG. 5 shows a fixing tool 8A proposed in the publication, and this fixing tool 8A has a pair of hakama seats 8a that can be seated at the base end 3a of the clamp body 3A. An extension piece 8b projecting in a substantially horizontal direction is integrally formed on the upper part of the clevis, and a holding piece 8c capable of holding the retention head 4b of the clevis 4A is supported by the extension piece 8b.
【0006】したがって、このような固定具8Aを用い
る場合、クレビス4Aの引留ヘッド4bを挟持片8cに
挟持させれば、クランプ本体3Aの筒状部3bの圧縮工
程で生じるおそれのあるクレビス4Aのねじれ回転を阻
止して、”ねじれ状態”を阻止できるが、固定具8Aが
圧縮作業中に外れることがあり、ことに宙乗り状態での
固定具8Aの着脱操作時に取り落とし等の危険を伴う。Therefore, when such a fixing tool 8A is used, if the retaining head 4b of the clevis 4A is held between the holding pieces 8c, the clevis 4A which may be generated in the compression step of the cylindrical portion 3b of the clamp body 3A is formed. Although the "twisted state" can be prevented by preventing the torsional rotation, the fixing tool 8A may come off during the compression work, and there is a danger that the fixing tool 8A may be dropped when the fixing tool 8A is attached or detached in a suspended state.
【0007】本発明の目的は、以上に述べたような従来
の笑い防止形圧縮形引留クランプの問題に鑑み、クラン
プ本体の圧縮工程でのクレビスのねじれ回転を完全に阻
止でき、しかも作業中に取り落とし等の危険のない笑い
防止形圧縮形引留クランプを得るにある。SUMMARY OF THE INVENTION An object of the present invention is to solve the problem of the conventional laughing prevention type compression clamp described above, and to completely prevent the clevis from twisting and rotating during the compression process of the clamp body. It is an object of the present invention to obtain a laughable anti-compression type compression clamp without danger of dropping.
【0008】[0008]
【課題を解決するための手段】この目的を達成するた
め、本発明は、鋼芯アルミ撚線の芯部鋼線の端部に固定
するクレビス及び前記鋼芯アルミ撚線のアルミ撚線の端
部を筒状のクランプ本体中に導入し、同クランプ本体を
逆圧縮加工する笑い防止形圧縮形引留クランプにおい
て、前記クレビスの基部を非円形断面とし、同基部の断
面形状に対応した非円形断面孔を形成した廻止めキャッ
プを前記クランプ本体の中心孔入口に固定した笑い防止
形圧縮形引留クランプを提案するものである。In order to achieve this object, the present invention provides a clevis fixed to an end of a core steel wire of a steel core aluminum stranded wire and an end of the aluminum stranded wire of the steel core aluminum stranded wire. The clevis has a non-circular cross-section and a non-circular cross-section corresponding to the cross-sectional shape of the clevis in a laugh-prevention-type compression-type retaining clamp that introduces a portion into a cylindrical clamp body and reverse-compresses the clamp body. It is an object of the present invention to provide a laughing prevention type compression clamp in which a detent cap having a hole is fixed to a center hole entrance of the clamp body.
【0009】後述する本発明の好ましい実施例の説明に
おいては、1)前記クランプ本体のクレビス側端面には前
記中心孔と同心的な環状溝が形成され、”L”字状断面
に形成される前記廻止めキャップの周面フランジが同環
状溝に差し込まれる構造、2)前記クレビス側側端面には
リベットを挿入できる複数の廻止めキャップ固定用固定
孔が形成され、前記中心孔入口内面には前記リベットの
先端を受け入れるえぐり部が形成される構造が説明され
る。In the following description of a preferred embodiment of the present invention, 1) an annular groove concentric with the center hole is formed in the clevis side end surface of the clamp body, and is formed in an "L" -shaped cross section. A structure in which a peripheral flange of the detent cap is inserted into the annular groove; 2) a plurality of detent cap fixing holes into which rivets can be inserted are formed in the clevis side end surface; A structure in which a recess for receiving the tip of the rivet is formed will be described.
【0010】[0010]
【発明の実施の形態】以下、図1から図3について本発
明の実施例の詳細を説明する。図1は本発明による笑い
防止形圧縮形引留クランプの要部の拡大断面図であり、
純アルミ等の軟質金属で作られるクランプ本体3の筒状
部3b中には鋼芯アルミ撚線が導入されるのは、従来と
同様である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is an enlarged sectional view of a main part of a laugh prevention type compression type retaining clamp according to the present invention,
As in the related art, a steel core aluminum stranded wire is introduced into the cylindrical portion 3b of the clamp body 3 made of a soft metal such as pure aluminum.
【0011】そして、前記クランプ本体3の筒状部3b
中には鋼芯アルミ撚線の芯部鋼線2aの先端部に固定さ
れるクレビス4が基端部3a側から挿入され、クランプ
本体3の筒状部3b及びクレビス4の接手筒4aが例え
ば6角断面に外部から電線側より順次圧縮加工される。
つまり、クレビス4の接手筒4a中には引き止められる
鋼芯アルミ撚線の芯部鋼線2aが予め挿入圧縮されてお
り、外周面を凹凸面とされた前記接手筒4a及びクラン
プ本体3の筒状部3bの逆圧縮変形により、鋼芯アルミ
撚線の先端部がクランプ本体3及びクレビス4に一体化
されることになる。The cylindrical portion 3b of the clamp body 3
A clevis 4 fixed to the distal end of the core steel wire 2a of a steel core aluminum stranded wire is inserted from the base end 3a side, and a cylindrical portion 3b of the clamp body 3 and a joint tube 4a of the clevis 4 are provided, for example. A hexagonal section is sequentially compressed from the outside from the electric wire side.
That is, the core steel wire 2a of a steel core aluminum stranded wire to be stopped is inserted and compressed in advance into the joint tube 4a of the clevis 4, and the tube of the joint tube 4a and the clamp body 3 whose outer peripheral surface is made uneven. The distal end of the steel core aluminum stranded wire is integrated with the clamp body 3 and the clevis 4 by the reverse compression deformation of the shape portion 3b.
【0012】また、円形断面の中心孔1中に内挿される
クレビス4の基部4cは直径方向に対向した平坦な削成
面4dを外周面にもつ非円形断面とされ、同中心孔1の
入口には前記基部4cの断面形状に一致した非円形断面
孔11を中心部に形成された廻止めキャップ12が固定
され、この非円形断面孔11と基部4cの係合によりク
ランプ本体3の筒状部3bの逆圧縮変形時のクレビス4
の回転が防止される。The base 4c of the clevis 4 inserted into the center hole 1 having a circular cross section has a non-circular cross section having a flat cut surface 4d diametrically opposed on the outer peripheral surface. A non-circular cross-section hole 11 conforming to the cross-sectional shape of the base 4c is fixed to a detent cap 12 formed at the center thereof. The engagement of the non-circular cross-section hole 11 and the base 4c causes the cylindrical shape of the clamp body 3 to be fixed. Clevis 4 during reverse compression deformation of part 3b
Is prevented from rotating.
【0013】具体的に説明すると、金属板から曲げ加工
される前記廻止めキャップ12は軸方向に伸びた周面フ
ランジ12aを外周面に有し、前記クランプ本体3の基
端部3aの端面には同周面フランジ12aを受け入れる
環状溝13が前記中心孔1と同心的に形成してある。そ
して、前記非円形断面孔11の周囲には小さなリベット
14を挿入できる複数の取付孔15が形成され、前記基
端部3aの端面にはこれらの取付孔15に対応した固定
孔16が穿たれる。More specifically, the detent cap 12 formed by bending a metal plate has a peripheral flange 12a extending in the axial direction on the outer peripheral surface, and is provided on the end surface of the base end 3a of the clamp body 3. The annular groove 13 for receiving the flange 12a is formed concentrically with the center hole 1. A plurality of mounting holes 15 into which small rivets 14 can be inserted are formed around the non-circular cross-sectional hole 11, and fixing holes 16 corresponding to these mounting holes 15 are formed in the end face of the base end 3a. It is.
【0014】また、前記中心孔1の入口には前記各固定
孔16に一部が連絡した環状のえぐり部17が形成され
るから、リベット14を前記取付孔15及び固定孔16
に打ち込む場合、各リベット14の先端がえぐり部17
で変形して抜けなくなり、これらのリベット14で廻止
めキャップ12がクランプ本体3に完全に固定状態にお
かれる。At the entrance of the center hole 1, there is formed an annular hole 17 partially connected to each of the fixing holes 16, so that the rivets 14 are connected to the mounting holes 15 and the fixing holes 16 respectively.
Rivet 14, the tip of each rivet 14
As a result, the cap 12 is completely fixed to the clamp body 3 by these rivets 14.
【0015】以上の説明から明らかなように、本発明に
よれば、クレビス4の接手筒4a中に芯部鋼線2aを挿
入圧縮した状態でクランプ本体3の筒状部3b中に鋼芯
アルミ撚線を導入しておき、クランプ本体3の筒状部3
bを外部から逆圧縮加工することにより、鋼芯アルミ撚
線がクランプ本体3及びクレビス4に完全に一体化され
る。この圧縮加工の場合、基端部3aの端面に固定され
た廻止めキャップ12の非円形断面孔11にクレビスの
基部4cが係合されているので、クランプ本体3に対し
てクレビス4は回転することができない状態にあるか
ら、クレビス4の回転方向の位置が安定し、クレビス4
の引留ヘッド4bに掛けられる引留ワイヤの撚りが戻る
所謂”ねじれ現象”が生じるのを防止できる。As is apparent from the above description, according to the present invention, when the core steel wire 2a is inserted into the joint tube 4a of the clevis 4 and compressed, the steel core aluminum is inserted into the cylindrical portion 3b of the clamp body 3. The stranded wire is introduced, and the cylindrical portion 3 of the clamp body 3 is
By reversely compressing b from the outside, the steel core aluminum stranded wire is completely integrated with the clamp body 3 and the clevis 4. In the case of this compression processing, the clevis 4 rotates with respect to the clamp body 3 because the clevis base 4c is engaged with the non-circular cross-sectional hole 11 of the detent cap 12 fixed to the end face of the base end 3a. Cannot rotate, the position of the clevis 4 in the rotational direction is stabilized, and the clevis 4
The so-called "twisting phenomenon" in which the twist of the anchor wire wound around the anchor head 4b returns can be prevented.
【0016】また、図示実施例の場合、廻止めキャップ
12はリベット14を用いて工場でクランプ本体3に固
定されるので、圧縮作業中に廻止めキャップ12が取り
落とされる危険がなく、廻止めキャップ12は比較的安
価に製作できると共に、廻止めキャップ12に周面フラ
ンジ12aを形成しておけば、クランプ本体の中心孔1
中に後から雨水等が侵入するのを防止できる。In the case of the illustrated embodiment, the detent cap 12 is fixed to the clamp body 3 at the factory using the rivets 14, so that there is no danger that the detent cap 12 will be dropped off during the compression work. The cap 12 can be manufactured relatively inexpensively, and if the circumferential flange 12a is formed on the rotation stopper cap 12, the center hole 1 of the clamp body can be formed.
It is possible to prevent rainwater or the like from invading later.
【0017】[0017]
【発明の効果】以上の説明から明らかなように、本発明
によれば、クランプ本体の逆圧縮工程において鋼芯アル
ミ撚線の撚りによりクレビスが回転するのを完全に防止
でき、安価に製作できる廻止めキャップをクランプ本体
にリベット等で固定するので、作業中に廻止めキャップ
が誤って取り落とされる危険のない笑い防止形圧縮形引
留クランプを達成できる。As is apparent from the above description, according to the present invention, the rotation of the clevis due to the twisting of the steel core aluminum stranded wire in the reverse compression step of the clamp body can be completely prevented, and the manufacturing can be performed at low cost. Since the detent cap is fixed to the clamp body with rivets or the like, it is possible to achieve a laugh prevention type compression type retaining clamp without danger of the detent cap being accidentally removed during the operation.
【図1】本発明による笑い防止形圧縮形引留クランプ要
部の拡大断面図である。FIG. 1 is an enlarged sectional view of a main part of a laugh prevention type compression type clamping clamp according to the present invention.
【図2】図1の要部拡大断面図である。FIG. 2 is an enlarged sectional view of a main part of FIG.
【図3】同笑い防止形圧縮形引留クランプ要部の分解斜
視図である。FIG. 3 is an exploded perspective view of an essential part of the laugh prevention type compression type retaining clamp.
【図4】従来の笑い防止形圧縮形引留クランプの一部切
欠き正面図である。FIG. 4 is a partially cutaway front view of a conventional laugh prevention type compression type retaining clamp.
【図5】他の従来の笑い防止形圧縮形引留クランプ要部
の分解斜視図である。FIG. 5 is an exploded perspective view of a main part of another conventional anti-smile type compression type retaining clamp.
1 中心孔 2a 芯部鋼線 3 クランプ本体 3a 基端部 3b 筒状部 4 クレビス 4a 接手筒 4b 引留ヘッド 4c 基部 11 非円形断面孔 12 廻止めキャップ 12a 周面フランジ 13 環状溝 15 取付孔 16 固定孔 DESCRIPTION OF SYMBOLS 1 Center hole 2a Core steel wire 3 Clamp main body 3a Base end 3b Cylindrical part 4 Clevis 4a Handle cylinder 4b Retention head 4c Base 11 Non-circular cross section hole 12 Detent cap 12a Peripheral flange 13 Annular groove 15 Mounting hole 16 Fixed Hole
Claims (3)
するクレビス及び前記鋼芯アルミ撚線のアルミ撚線の端
部を筒状のクランプ本体中に導入し、同クランプ本体を
逆圧縮加工する笑い防止形圧縮形引留クランプにおい
て、前記クレビスの基部を非円形断面とし、同基部の断
面形状に対応した非円形断面孔を形成した廻止めキャッ
プを前記クランプ本体の中心孔に固定したことを特徴と
する笑い防止形圧縮形引留クランプ。1. A clevis fixed to an end of a core steel wire of a steel core aluminum stranded wire and an end of the aluminum stranded wire of the steel core aluminum stranded wire are introduced into a cylindrical clamp body. In the laugh prevention type compression type retaining clamp for reverse compression processing, the base of the clevis has a non-circular cross-section, and a detent cap having a non-circular cross-sectional hole corresponding to the cross-sectional shape of the base is provided in the center hole of the clamp body. A laugh prevention type compression type clamping clamp characterized by being fixed.
前記中心孔と同心的な環状溝が形成され、”L”字状断
面に形成される前記廻止めキャップの周面フランジが同
環状溝に差し込まれることを特徴とする請求項1記載の
笑い防止形圧縮形引留クランプ。2. An annular groove concentric with the center hole is formed in a clevis-side end surface of the clamp body, and a peripheral flange of the detent cap formed in an “L” -shaped cross section is formed in the annular groove. The laugh prevention type compression type retention clamp according to claim 1, which is inserted.
入できる複数の廻止めキャップ固定用固定孔が形成さ
れ、前記中心孔入口内面には前記リベットの先端を受け
入れるえぐり部が形成されることを特徴とする請求項1
または請求項2記載の笑い防止形圧縮形引留クランプ。3. The clevis-side end face is formed with a plurality of fixing holes for fixing a detent cap into which a rivet can be inserted, and the center hole entrance inner face is formed with a gouge for receiving the tip of the rivet. Claim 1.
A laugh prevention type compression type retaining clamp according to claim 2 or 3.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23666199A JP4301649B2 (en) | 1999-08-24 | 1999-08-24 | Laughing prevention type compression retention clamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23666199A JP4301649B2 (en) | 1999-08-24 | 1999-08-24 | Laughing prevention type compression retention clamp |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001069651A true JP2001069651A (en) | 2001-03-16 |
JP4301649B2 JP4301649B2 (en) | 2009-07-22 |
Family
ID=17003925
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP23666199A Expired - Fee Related JP4301649B2 (en) | 1999-08-24 | 1999-08-24 | Laughing prevention type compression retention clamp |
Country Status (1)
Country | Link |
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JP (1) | JP4301649B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102623938A (en) * | 2012-04-20 | 2012-08-01 | 仝伟 | Strain clamp for gap-type ultra-heat-resistant capacity-increased aluminum-alloy conductor |
-
1999
- 1999-08-24 JP JP23666199A patent/JP4301649B2/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102623938A (en) * | 2012-04-20 | 2012-08-01 | 仝伟 | Strain clamp for gap-type ultra-heat-resistant capacity-increased aluminum-alloy conductor |
Also Published As
Publication number | Publication date |
---|---|
JP4301649B2 (en) | 2009-07-22 |
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