JP2009254007A - Synthetic resin material for ground wire pull-in port in concrete utility pole - Google Patents

Synthetic resin material for ground wire pull-in port in concrete utility pole Download PDF

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JP2009254007A
JP2009254007A JP2008094857A JP2008094857A JP2009254007A JP 2009254007 A JP2009254007 A JP 2009254007A JP 2008094857 A JP2008094857 A JP 2008094857A JP 2008094857 A JP2008094857 A JP 2008094857A JP 2009254007 A JP2009254007 A JP 2009254007A
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Japan
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concrete
utility pole
ground wire
port
pole
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JP2008094857A
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JP5238328B2 (en
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Takahiro Oikawa
貴宏 及川
Shinobu Sasaki
忍 佐々木
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Iwabuchi Corp
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Iwabuchi Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a material of a ground wire pull-in port in a concrete utility pole that makes it possible to reliably prevent the ingress of concrete (cement mortar) into its body when the concrete utility pole is manufactured and it possible to easily obtain a ground wire pull-in port after formwork removal. <P>SOLUTION: The pull-in port material includes a cylindrical body 1 buried in the peripheral wall of a concrete utility pole when the pole is formed. The body 1 is provided at the back end of its hollow portion 2 with a lid material 3 that is connected to the inner wall of the cylindrical body 1 at its peripheral-end thin portion 3a and is thereby supported. The lid material is provided with a screw hole 5 for screwing the tip of a support bolt 10 for supporting its base portion on a formwork for forming the utility pole. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、コンクリート電柱製造時に成形されるアース線引入れ口を構成する合成樹脂材に関するものである。   The present invention relates to a synthetic resin material that constitutes a ground wire inlet formed during the production of a concrete utility pole.

コンクリート電柱の製造に際して電柱成形用型枠の所定位置にアース線引入れ口用合成樹脂材を位置させて固定してコンクリート電柱周壁（コンクリート）中に埋込み引入れ口を形成しているが、当該合成樹脂材をコンクリート電柱の内外を連通する筒状体のみで構成すると、コンクリート打設時に該筒状体内にコンクリートが入り込むため、引入れ口を構成する筒体と別体の蓋材を用意し、該蓋材を前記筒体に接着テープで止め、脱型後、テープを剥して蓋材を取り外すようにしている。   In the production of a concrete power pole, a synthetic resin material for the ground wire inlet is positioned and fixed at a predetermined position of the power pole forming formwork to form an embedded inlet in the peripheral wall (concrete) of the concrete electric pole. If the synthetic resin material is composed only of a cylindrical body that communicates with the inside and outside of the concrete utility pole, the concrete will enter the tubular body when placing the concrete. The lid member is fixed to the cylindrical body with an adhesive tape, and after removing the mold, the tape is peeled off to remove the lid member.

従って、従来の、アース線引入れ口用合成樹脂材は、電柱製造に際し、別体の蓋材を用意して、これを該樹脂材に止める必要があるので煩雑であり、また、在庫管理上も満足のいくものではない。   Therefore, the conventional synthetic resin material for the ground wire inlet is complicated because it is necessary to prepare a separate lid material and to fix it to the resin material when manufacturing the utility pole. Is not satisfactory.

電柱成形時にコンクリート電柱周壁内に埋設される筒状主体を備え、該筒状主体の中空部内の奥端側に周端の薄肉部に於いて前記筒状主体の内壁に接続して支持させた蓋材を設け、該蓋材に、基部を電柱成形用型枠に支持させる支持ボルトの先端を螺合するねじ孔を設けた、構成とするのである。   A cylindrical main body embedded in the peripheral wall of a concrete electric pole at the time of forming an electric pole, and connected to and supported by the inner wall of the cylindrical main body at the thin end of the peripheral end on the inner side of the hollow portion of the cylindrical main body A lid member is provided, and the lid member is provided with a screw hole for screwing a tip of a support bolt for supporting the base portion on the power pole forming mold.

本発明によれば、型枠に組合わせた状態で主体内へのコンクリートの侵入を確実に防ぎ、従って、脱型後は、支持ボルトを簡単に外せ、かつ、コンクリート電柱外部から蓋材を押圧（叩打）することにより筒状主体から離脱させ、アース線引入れ口を容易に得ることができる。   According to the present invention, it is possible to reliably prevent the intrusion of concrete into the main body in a state where it is combined with the formwork. Therefore, after removing the mold, the support bolt can be easily removed and the cover material is pressed from the outside of the concrete power pole. By (striking), it can be detached from the cylindrical main body, and the ground wire inlet can be easily obtained.

図面は、本発明に係る、コンクリート電柱のアース線引入れ口用合成樹脂材の一実施例を示し、図１は平面図、図２は図１の断面図、図３は図２の側面図、図４はコンクリート電柱内に埋込んだ状態の断面図、図５は使用状態の断面図である。   The drawings show an embodiment of a synthetic resin material for a ground wire inlet of a concrete utility pole according to the present invention, FIG. 1 is a plan view, FIG. 2 is a sectional view of FIG. 1, and FIG. 3 is a side view of FIG. 4 is a cross-sectional view in a state of being embedded in a concrete power pole, and FIG. 5 is a cross-sectional view in a state of use.

本発明に係る、コンクリート電柱のアース線引入れ口用合成樹脂材Ａは、筒状主体１と該筒状主体１の中空部２内に収設した蓋材３とで構成し、コンクリート電柱Ｂの周壁部Ｂａに筒状主体１を埋設後、該筒状主体１から蓋材３を離脱させてアース線ａの電柱Ｂ内に対する引入れ口４として適用するものである。   The synthetic resin material A for a ground wire inlet of a concrete utility pole according to the present invention is composed of a cylindrical main body 1 and a lid member 3 housed in a hollow portion 2 of the cylindrical main body 1, and a concrete power pole B After the cylindrical main body 1 is embedded in the peripheral wall portion Ba, the lid member 3 is detached from the cylindrical main body 1 and applied as the inlet 4 for the electric wire B of the ground wire a.

筒状主体１は、周壁部Ｂａに埋設したときの電柱径方向の抜け止め用として前後両端部の外径を中間部より大径にした、両端開口の中空体で成り、中空部２の後端側の中間部には後端側の径幅を大きくする段部２ａを設け、該段部２ａに前記蓋材３の周端の断面三角状にした薄肉部３ａの先端を接続して前記蓋材３を筒状主体１に一体に設けてある。   The cylindrical main body 1 is composed of a hollow body having both ends opened at the front and rear ends, which are larger in diameter than those in the middle portion, for preventing the electric pole from detaching in the radial direction when embedded in the peripheral wall portion Ba. A step portion 2a that increases the diameter width on the rear end side is provided in the intermediate portion on the end side, and the tip of a thin portion 3a that is triangular in cross section at the peripheral end of the lid member 3 is connected to the step portion 2a. A lid 3 is integrally provided on the cylindrical main body 1.

蓋材３は、前記中空部２の奥壁を構成し、中央部にはねじ孔５を設け、該ねじ孔５に螺合した支持ボルト１０の先端部１０ａとで、筒状主体１の後端面側は閉塞され、該後端面側からのセメントモルタルの中空部２内への侵入は防止される。   The lid member 3 constitutes the back wall of the hollow portion 2, a screw hole 5 is provided in the center portion, and the rear end portion 10 a of the support bolt 10 screwed into the screw hole 5 is connected to the rear side of the cylindrical main body 1. The end face side is closed, and the cement mortar from entering the hollow portion 2 from the rear end face side is prevented.

そして、電柱（コンクリート電柱）成形用型枠（図示省略）に支持させた前記支持ボルト１０の先端部１０ａの雄ねじに、主体１に一体にした蓋材３に設けたねじ孔５を螺合して、アース線引入れ口用合成樹脂材Ａを所定位置に支持させた前記成形用型枠と組合わせ、型枠Ｍ内にセメントモルタル（未硬化状態のコンクリート）を打設硬化させて脱型して、支持ボルト１０を離脱させると周壁部Ｂａに前記合成樹脂材Ａが埋設されたコンクリート電柱Ｂを得ることができる。   Then, the screw hole 5 provided in the lid member 3 integrated with the main body 1 is screwed into the male screw of the tip end portion 10a of the support bolt 10 supported by a power pole (concrete power pole) molding form (not shown). Then, in combination with the molding mold supporting the synthetic resin material A for the ground wire inlet at a predetermined position, cement mortar (uncured concrete) is cast and cured in the mold M to remove the mold. Then, when the support bolt 10 is detached, the concrete utility pole B in which the synthetic resin material A is embedded in the peripheral wall portion Ba can be obtained.

そして、適宜に、外部から中空部２内に棒体ｃを挿入して蓋材３を押圧（叩打その他）すると、蓋材３は断面三角形状の薄肉部３ａで主体１に接続されているだけであるので、前記外力の負荷により、引きち切られ、ち切り片（蓋材３）は電柱Ｂ内に落下し、引入れ口４が形成され、該引入れ口４を利用してアーム線ａを電柱Ｂ内に引入れることができる。   When the rod body c is inserted into the hollow portion 2 from the outside and the lid member 3 is pressed (struck or otherwise) as appropriate, the lid member 3 is only connected to the main body 1 by a thin-walled portion 3a having a triangular cross section. Therefore, it is torn off by the load of the external force, and the piece to be cut (the cover material 3) falls into the electric pole B to form the inlet 4, and the arm wire is formed using the inlet 4 a can be drawn into the pole B.

なお、蓋材３は押圧され、そのため、断面三角形状の薄肉部３ａは蓋材３の移動に伴って引っ張られ、引きち切られ、該引きち切られることによって生じる薄肉部３ａ部分は主体１内にバリとなって残存する（図５で符号ｂとして示す）が、該バリはアース線ａの排出方向電柱内方向に向いているので、アース線ａはバリによって損傷を受けることはない。   The lid member 3 is pressed, so that the thin-walled portion 3a having a triangular cross-section is pulled and torn along with the movement of the lid member 3, and the thin-walled portion 3a produced by the tearing is mainly 1 The burrs remain inside (indicated as b in FIG. 5). However, since the burrs are directed toward the inside of the power pole in the discharge direction of the ground wire a, the ground wire a is not damaged by the burr.

平面図。Plan view. 図１の断面図。Sectional drawing of FIG. 図２の側面図。The side view of FIG. コンクリート電柱内に埋込んだ状態の断面図。Sectional drawing of the state embedded in the concrete electric pole. 使用状態の断面図。Sectional drawing of use condition.

符号の説明Explanation of symbols

１ 筒状主体
２ 中空部
３ 蓋材
３ａ 薄肉部
５ ねじ孔
１０ 支持ボルト DESCRIPTION OF SYMBOLS 1 Cylindrical main body 2 Hollow part 3 Lid 3a Thin part 5 Screw hole 10 Support bolt

Claims (1)

電柱成形時にコンクリート電柱周壁内に埋設される筒状主体を備え、該筒状主体の中空部内の奥端側に周端の薄肉部に於いて前記筒状主体の内壁に接続して支持させた蓋材を設け、該蓋材に、基部を電柱成形用型枠に支持させる支持ボルトの先端を螺合するねじ孔を設けた、コンクリート電柱のアース線引入れ口用合成樹脂材。   A cylindrical main body embedded in the peripheral wall of a concrete electric pole at the time of forming an electric pole, and connected to and supported by the inner wall of the cylindrical main body at the thin end of the peripheral end on the inner side of the hollow portion of the cylindrical main body A synthetic resin material for an earth wire inlet of a concrete electric pole, provided with a lid material, and provided with a screw hole for screwing a tip of a support bolt for supporting the base portion on a power pole molding mold.
JP2008094857A 2008-04-01 2008-04-01 Synthetic resin material for earth wire inlet of concrete utility pole Expired - Fee Related JP5238328B2 (en)

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JP5238328B2 JP5238328B2 (en) 2013-07-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103032631A (en) * 2012-12-20 2013-04-10 中国电力科学研究院 Iced conductor supporting device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330196U (en) * 1976-08-23 1978-03-15
JP2001158012A (en) * 1999-12-01 2001-06-12 Toda Constr Co Ltd Mounting structure of connecting implement to form

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5330196U (en) * 1976-08-23 1978-03-15
JP2001158012A (en) * 1999-12-01 2001-06-12 Toda Constr Co Ltd Mounting structure of connecting implement to form

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103032631A (en) * 2012-12-20 2013-04-10 中国电力科学研究院 Iced conductor supporting device

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