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JP4469259B2 - Mounting method of antenna - Google Patents
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JP4469259B2 - Mounting method of antenna - Google Patents

Mounting method of antenna Download PDF

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JP4469259B2
JP4469259B2 JP2004330878A JP2004330878A JP4469259B2 JP 4469259 B2 JP4469259 B2 JP 4469259B2 JP 2004330878 A JP2004330878 A JP 2004330878A JP 2004330878 A JP2004330878 A JP 2004330878A JP 4469259 B2 JP4469259 B2 JP 4469259B2
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Prior art keywords
antenna
mounting column
antenna mounting
existing
new
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JP2006140939A (en
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由明 小林
昇 久松
英昭 井齋
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Kokusai Denki Electric Inc
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Yagi Antenna Co Ltd
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Description

本発明は、送信アンテナが設置されている既存の鉄塔上に新しい送信アンテナを追加して設置するアンテナの取付方法に関する。   The present invention relates to an antenna mounting method in which a new transmission antenna is added and installed on an existing steel tower on which a transmission antenna is installed.

通信やテレビ放送等で用いられる送信アンテナは、通常、鉄塔上に取付けて使用されるが、鉄塔を有効活用するために、1つの鉄塔にFM放送やテレビ放送用の送信アンテナ等、多数のアンテナを取付けている。   Transmitting antennas used in communications, television broadcasting, and the like are usually mounted on a steel tower, but in order to make effective use of the steel tower, a large number of antennas such as a transmission antenna for FM broadcasting and television broadcasting are provided on one steel tower. Is installed.

上記テレビ放送では、従来から行なわれているアナログテレビ放送の他にデジタルテレビ放送(ISDB−T:Terrestrial Integrated Services Digital Broadcasting)が2003年から関東、近畿及び中京広域圏で開始され、また、2006年までにその他の地域で放送開始が予定されている。このためデジタルテレビ放送用の送信アンテナを既存の鉄塔に追加して設置することになるが、鉄塔には上記したように既に多数の送信アンテナが取付けられており、デジタルテレビ放送用の送信アンテナを設置する余裕がない状態となっている。   In the above-mentioned television broadcasting, digital television broadcasting (ISDB-T: Terrestrial Integrated Services Digital Broadcasting) was started in 2003 in Kanto, Kinki, and Chukyo wide areas in addition to the analog television broadcasting that has been performed in the past. By the time it is scheduled to start broadcasting in other areas. For this reason, a transmission antenna for digital TV broadcasting will be added to the existing steel tower. However, as described above, many transmission antennas are already attached to the steel tower. There is no room to install.

上記のように既存の鉄塔に新しい送信アンテナを追加して設置する余裕がない場合、既存の送信アンテナを現在位置より所定の長さ嵩上げしてアンテナ設置スペースを設け、このスペース部分に新規の送信アンテナを取付けることが考えられる。   If there is not enough room to install a new transmission antenna on the existing tower as described above, the existing transmission antenna is raised by a predetermined length from the current position to provide an antenna installation space. It is conceivable to install an antenna.

従来、鉄塔に取付けられている既存の送信アンテナを新しいアンテナに取替える方法としては、鉄塔の頂部と地上との間に索道を設置し、既設のアンテナを取り外して上記索道により地上に降ろし、その後、新しいアンテナを上記索道により鉄塔頂部に引上げて設置する方法、あるいは鉄塔よりも高く延びる伸縮アームを備えたクレーン車を使用して既設のアンテナを新しいアンテナに取替える方法がある(例えば、特許文献1参照。)。
特開平8−222923号公報
Conventionally, as a method of replacing the existing transmitting antenna attached to the steel tower with a new antenna, a cableway is installed between the top of the steel tower and the ground, the existing antenna is removed, and the ground is lowered by the cableway, There is a method of installing a new antenna by pulling it up to the top of the tower through the cableway, or a method of replacing an existing antenna with a new antenna using a crane vehicle having an extendable arm extending higher than the tower (for example, see Patent Document 1). .)
JP-A-8-222923

上記のように既存の鉄塔に新しい送信アンテナを追加して設置する場合、従来の索道によるアンテナ取替え方法では、既存のアンテナの嵩上げを行なうことができない。また、クレーン車を使用したアンテナ取替え方法では、伸縮アームよりも高い鉄塔の場合は実施することができない。更に、山間地などクレーン車が進入できないような場所においては、クレーン車を使用することができないという問題がある。   As described above, when a new transmitting antenna is added to an existing tower and installed, the conventional antenna replacement method using a cableway cannot raise the existing antenna. Moreover, the antenna replacement method using a crane vehicle cannot be carried out in the case of a steel tower higher than the telescopic arm. Furthermore, there is a problem that the crane vehicle cannot be used in a place such as a mountainous area where the crane vehicle cannot enter.

本発明は上記の課題を解決するためになされたもので、山間地などクレーン車が進入できないような場所においても、鉄塔に新しいアンテナを追加して設置することができるアンテナの取付方法を提供することを目的とする。   The present invention has been made to solve the above problems, and provides an antenna mounting method that can be installed by adding a new antenna to a steel tower even in a place where a crane vehicle cannot enter such as a mountainous area. For the purpose.

本発明は、鉄塔の上部に設置された既設アンテナ取付柱にアンテナが取付けられている状態で、前記鉄塔の上部に新規のアンテナを追加して取付けるアンテナの取付方法において、前記既設アンテナ取付柱より径が大きく且つ該既設アンテナ取付柱を支持するためのフランジを備えた新設アンテナ取付柱を鉄塔の下方より引上げ、該新設アンテナ取付柱の上部内側に前記既設アンテナ取付柱の下部を挿入し、該既設アンテナ取付柱の下端部を前記フランジに当接させ、前記新設アンテナ取付柱を前記既設アンテナ取付柱と共に引上げて既設アンテナを所定高さ嵩上げし、該嵩上げしたスペースに新規のアンテナを追加して取付けることを特徴とする。   The present invention relates to an antenna mounting method in which a new antenna is added to the upper part of the tower while the antenna is attached to the existing antenna mounting pillar installed on the upper part of the steel tower. A new antenna mounting column having a large diameter and having a flange for supporting the existing antenna mounting column is pulled up from below the steel tower, and the lower portion of the existing antenna mounting column is inserted inside the upper portion of the new antenna mounting column, The lower end of the existing antenna mounting column is brought into contact with the flange, the new antenna mounting column is lifted together with the existing antenna mounting column to raise the existing antenna by a predetermined height, and a new antenna is added to the raised space. It is characterized by being installed.

本発明によれば、既存の鉄塔が高くてクレーン車を使用できない場合、あるいは山間地などクレーン車が進入できないような場所においても、既存の鉄塔に仮設架台を設置して既設アンテナ取付柱と共に既設アンテナを所望の長さ分嵩上げし、その嵩上げにより生じたスペースに新しいアンテナを追加して設置することができる。   According to the present invention, even when the existing steel tower is high and the crane vehicle cannot be used, or in a place such as a mountainous area where the crane vehicle cannot enter, a temporary mount is installed on the existing steel tower together with the existing antenna mounting pillar. The antenna is raised by a desired length, and a new antenna can be added and installed in the space generated by the raising.

以下、図面を参照して本発明の一実施形態を説明する。
図1ないし図3は、鉄塔の上部に設置されている既存のアンテナを現在位置より所定の高さまで嵩上げしてアンテナ設置スペースを設け、このスペース部分に新規のアンテナを取付ける場合の作業工程を示したもので、図1(a)はアンテナの取付工事を開始する前の状態、図1(b)ないし図2(b)は、途中の作業工程、図3はアンテナの取付けを完了した状態を示している。なお、上記図1ないし図3は、鉄塔の頂部における状態を示したものである。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 to FIG. 3 show an operation process in a case where an antenna installation space is provided by raising the existing antenna installed at the upper part of the steel tower to a predetermined height from the current position, and a new antenna is installed in this space portion. FIG. 1 (a) shows the state before starting the antenna installation work, FIGS. 1 (b) to 2 (b) show the intermediate work process, and FIG. 3 shows the state where the antenna installation is completed. Show. In addition, the said FIG. 1 thru | or 3 shows the state in the top part of a steel tower.

図1(a)において、11は既存の鉄塔で、その上端部分に直径が例えば16.5cm、長さが5.3m程度の既設アンテナ取付柱12が支点支持金物(図示せず)により固定されている。すなわち、既設アンテナ取付柱12は、鉄塔11の最上端部のA部において上側の支点支持金物(図示せず)により支持されていると共に、鉄塔11の最上端部から所定距離例えば1.5m程度下がった所に設けられている支持構体13に下側の支点支持金物(図示せず)により下端部が支持されている。   In FIG. 1A, 11 is an existing steel tower, and an existing antenna mounting column 12 having a diameter of, for example, 16.5 cm and a length of about 5.3 m is fixed to a top end portion thereof by a fulcrum support metal (not shown). ing. That is, the existing antenna mounting column 12 is supported by an upper fulcrum support hardware (not shown) at the uppermost end portion A of the tower 11 and a predetermined distance, for example, about 1.5 m from the uppermost end of the tower 11. A lower end portion is supported on a support structure 13 provided at a lowered position by a lower fulcrum support hardware (not shown).

そして、上記既設アンテナ取付柱12の上端部には、例えばアナログTV放送用の送信アンテナ等の既設送信アンテナ14が取付けられている。この既設送信アンテナ14は、例えばダイポールアンテナや双ループアンテナ等のパネル型のアンテナで、既設アンテナ取付柱12の外周に沿って多面に配置されている。   An existing transmission antenna 14 such as an analog TV broadcast transmission antenna is attached to the upper end portion of the existing antenna mounting column 12. The existing transmission antenna 14 is a panel-type antenna such as a dipole antenna or a double loop antenna, and is disposed on multiple sides along the outer periphery of the existing antenna mounting column 12.

また、上記鉄塔11には、主給電線15が取付けられている。この主給電線15は、電力分配器16を介して既設送信アンテナ14の給電端子に接続される。上記電力分配器16は、既設送信アンテナ14の下側近傍に設けられる。   A main feeder 15 is attached to the steel tower 11. The main feed line 15 is connected to the feed terminal of the existing transmission antenna 14 via the power distributor 16. The power distributor 16 is provided near the lower side of the existing transmission antenna 14.

上記鉄塔11に対して新しいアンテナを取付ける場合、例えば予め昼間時にアンテナ取付けの準備工事を行ない、放送終了後の夜間にアンテナ取付け工事を行なう。   When a new antenna is attached to the steel tower 11, for example, preparation work for antenna attachment is performed in advance during the daytime, and antenna installation work is performed at night after the end of broadcasting.

まず、昼間時における準備工事について説明する。
(1)鉄塔11の頂部と地上との間に索道(図示せず)を設け、この索道及びウインチを使用して図1(b)に示す仮設架台21等の資材を鉄塔11の頂部まで引上げる。
(2)上記資材を使用して図1(b)に示すように鉄塔11の頂部に仮設架台21を取付ける。この仮設架台21の頂部は、鉄塔11の頂部より所定長さ例えば1.4m程度高い位置に設定する。
(3)仮設架台21の頂部に重量受け金物22を取付け、既設アンテナ取付柱12及び既設送信アンテナ14を固定する。
(4)鉄塔11の頂部において既設アンテナ取付柱12を支持している上側の支点支持金物(図1のA部)を外す。
First, preparation work at daytime will be described.
(1) A cableway (not shown) is provided between the top of the steel tower 11 and the ground, and materials such as the temporary mount 21 shown in FIG. 1B are pulled to the top of the steel tower 11 using this cableway and winch. increase.
(2) The temporary base 21 is attached to the top of the steel tower 11 as shown in FIG. The top of the temporary mount 21 is set at a position higher than the top of the steel tower 11 by a predetermined length, for example, about 1.4 m.
(3) The weight receiver 22 is attached to the top of the temporary mount 21, and the existing antenna mounting column 12 and the existing transmission antenna 14 are fixed.
(4) Remove the upper fulcrum support hardware (A portion in FIG. 1) supporting the existing antenna mounting column 12 at the top of the steel tower 11.

(5)鉄塔11の上部に既設送信アンテナ14に対する新しい分岐ケーブル(図示せず)を取付ける。
(6)上記既設アンテナ取付柱12の下部を角材23により鉄塔11に固定し、既設アンテナ取付柱12の振れ止め処理を行なう。
(7)既設アンテナ取付柱12の下部を鉄塔11の支持構体13に固定している下側の支点支持金物(図1のB部)を外す。
(8)鉄塔11の頂部より例えば2.5m下に支持構体24を設け、この支持構体24に新設アンテナ取付柱26をガイドする円筒状のガイド金物25を取付ける。このガイド金物25は、1対の半円筒状のバンドにより構成したもので、ボルト・ナットにより支持構体24に取付けて新設アンテナ取付柱26の移動をガイドする。上記支持構体24の取付け位置は、新設アンテナ取付柱26の最終的な下端部位置となる。
(5) A new branch cable (not shown) for the existing transmission antenna 14 is attached to the upper part of the tower 11.
(6) The lower part of the existing antenna mounting column 12 is fixed to the steel tower 11 by the square member 23, and the existing antenna mounting column 12 is subjected to a steadying process.
(7) Remove the lower fulcrum support metal fitting (B portion in FIG. 1) that fixes the lower part of the existing antenna mounting column 12 to the support structure 13 of the tower 11.
(8) A support structure 24 is provided, for example, 2.5 m below the top of the steel tower 11, and a cylindrical guide hardware 25 that guides the new antenna mounting column 26 is attached to the support structure 24. The guide hardware 25 is composed of a pair of semi-cylindrical bands, and is attached to the support structure 24 by bolts and nuts to guide the movement of the new antenna mounting column 26. The mounting position of the support structure 24 is the final lower end position of the new antenna mounting column 26.

(9)仮設架台21の上部、すなわち、鉄塔11の頂部より上の位置において、2つのレバーブロック27a、27bを対角に取付けると共に、新設アンテナ取付柱26のほぼ中央部に鋼索28を取付け、レバーブロック27a、27bにより上記鋼索28と共に新設アンテナ取付柱26を引上げる。この場合、新設アンテナ取付柱26は、上記ガイド金物25によりガイドされて上方に引上げられる。   (9) At the top of the temporary mount 21, that is, above the top of the tower 11, the two lever blocks 27a and 27b are mounted diagonally, and the steel cable 28 is mounted at the substantially central portion of the new antenna mounting column 26. The new antenna mounting column 26 is pulled up together with the steel cord 28 by the lever blocks 27a and 27b. In this case, the new antenna mounting column 26 is guided upward by the guide hardware 25 and pulled upward.

上記レバーブロック27a、27bにより新設アンテナ取付柱26を引上げる際、既設アンテナ取付柱12の下部が新設アンテナ取付柱26の上端部から内側に挿入できるようにする。上記新設アンテナ取付柱26は、詳細を後述するように管状に形成され、且つ、その直径が既設アンテナ取付柱12の直径より十分に大きく例えば26.7cm程度に設定される。すなわち、新設アンテナ取付柱26は、上部内側に既設アンテナ取付柱12を挿入でき、且つ十分な強度を持つように設定している。また、新設アンテナ取付柱26には、上端から内部に挿入された既設アンテナ取付柱12の下端部に当接して支持するフランジが設けられる。   When the new antenna mounting column 26 is pulled up by the lever blocks 27a and 27b, the lower portion of the existing antenna mounting column 12 can be inserted inward from the upper end of the new antenna mounting column 26. The new antenna mounting column 26 is formed in a tubular shape as will be described in detail later, and the diameter thereof is set to be sufficiently larger than the diameter of the existing antenna mounting column 12, for example, about 26.7 cm. That is, the new antenna mounting column 26 is set so that the existing antenna mounting column 12 can be inserted inside the upper portion and has sufficient strength. In addition, the new antenna mounting column 26 is provided with a flange that abuts and supports the lower end portion of the existing antenna mounting column 12 inserted from the upper end into the inside.

(10)更に、図2(a)に示すよう新設アンテナ取付柱26の上部内側に既設アンテナ取付柱12の下端部を挿入した状態で、レバーブロック27a、27bにより新設アンテナ取付柱26を引上げる。この場合、上記新設アンテナ取付柱26は、その最上端が仮設架台21の頂部に達するまで引上げる。また、このとき詳細を後述するように、新設アンテナ取付柱26に設けたフランジが既設アンテナ取付柱12の下端部に当接するように新設アンテナ取付柱26の長さ、フランジの位置等が設定される。上記の状態で、鉄塔11の頂部に支持金物29を取付け、ボルト・ナットを締め付けて新設アンテナ取付柱26を鉄塔11に固定する。すなわち、夜間の工事を行なうまで、新設アンテナ取付柱26を鉄塔11に一時的に固定する。   (10) Further, as shown in FIG. 2A, the new antenna mounting column 26 is pulled up by the lever blocks 27a and 27b in a state where the lower end portion of the existing antenna mounting column 12 is inserted inside the upper portion of the new antenna mounting column 26. . In this case, the new antenna mounting column 26 is pulled up until its uppermost end reaches the top of the temporary mount 21. At this time, as will be described in detail later, the length of the new antenna mounting column 26, the position of the flange, etc. are set so that the flange provided on the new antenna mounting column 26 contacts the lower end of the existing antenna mounting column 12. The In the above state, the support metal 29 is attached to the top of the steel tower 11, and the bolts and nuts are tightened to fix the new antenna mounting pillar 26 to the steel tower 11. That is, the new antenna mounting column 26 is temporarily fixed to the steel tower 11 until construction at night.

(11)仮設架台21の頂部で既設アンテナ取付柱12及び既設送信アンテナ14を支持していた重量受け金物22(図1(b)参照)を取り外す。
図4は、上記新設アンテナ取付柱26の詳細、及び該新設アンテナ取付柱26と既設アンテナ取付柱12との関係を示したものである。新設アンテナ取付柱26は、上側鋼管31aと下側鋼管31bからなり、上側鋼管31aの下端部にフランジ32a、下側鋼管31bの上端部にフランジ32bがそれぞれ溶接により取付けられる。上記上側鋼管31aと下側鋼管31bは、フランジ32a、32b部分がボルト・ナットにより接合される。
(11) The weight receiver 22 (see FIG. 1B) supporting the existing antenna mounting column 12 and the existing transmitting antenna 14 at the top of the temporary mount 21 is removed.
FIG. 4 shows the details of the new antenna mounting column 26 and the relationship between the new antenna mounting column 26 and the existing antenna mounting column 12. The new antenna mounting column 26 includes an upper steel pipe 31a and a lower steel pipe 31b. A flange 32a is attached to the lower end of the upper steel pipe 31a, and a flange 32b is attached to the upper end of the lower steel pipe 31b by welding. The upper steel pipe 31a and the lower steel pipe 31b are joined at their flanges 32a and 32b by bolts and nuts.

上記上側鋼管31aに設けられるフランジ32aは、上側鋼管31aの下部周囲だけでなく、上側鋼管31aの底部を閉塞するように設けられる。すなわち、上側鋼管31aの上部内側に挿入された既設アンテナ取付柱12の下端部をフランジ32aで保持するようにしている。この場合、図2(a)に示すように新設アンテナ取付柱26の上端を仮設架台21の頂部まで引上げたときに、フランジ32aが既設アンテナ取付柱12の下端部に当接するように上側鋼管31aの長さを設定する。   The flange 32a provided on the upper steel pipe 31a is provided not only to surround the lower part of the upper steel pipe 31a but also to close the bottom of the upper steel pipe 31a. That is, the lower end portion of the existing antenna mounting column 12 inserted into the upper inner side of the upper steel pipe 31a is held by the flange 32a. In this case, as shown in FIG. 2A, when the upper end of the new antenna mounting column 26 is pulled up to the top of the temporary mount 21, the upper steel pipe 31 a so that the flange 32 a contacts the lower end of the existing antenna mounting column 12. Set the length of.

上記上側鋼管31aの上端部には、最上端から所定距離下がった位置の周囲に4本のボルト・ナット33が等間隔で螺着されると共に、更に所定距離下がった位置の周囲に4本のボルト・ナット34が等間隔で螺着される。また、上側鋼管31aの下端部には、最下端すなわちフランジ32aから所定距離上がった位置の周囲に4本のボルト・ナット35が等間隔で螺着されると共に、更に所定距離上がった位置の周囲に4本のボルト・ナット36が等間隔で螺着される。上側鋼管31a内に挿入された既設アンテナ取付柱12は、上側鋼管31aの上端部に螺着されたボルト・ナット33、34、及び上側鋼管31aの下端部に螺着されたボルト・ナット35、36を締め付けて固定する。   At the upper end of the upper steel pipe 31a, four bolts and nuts 33 are screwed at equal intervals around a position lowered by a predetermined distance from the uppermost end, and further, four bolts and nuts are arranged around a position lowered by a predetermined distance. Bolts and nuts 34 are screwed at equal intervals. Further, at the lower end of the upper steel pipe 31a, four bolts and nuts 35 are screwed at equal intervals around the lowermost end, that is, a position raised by a predetermined distance from the flange 32a. Four bolts and nuts 36 are screwed at equal intervals. The existing antenna mounting column 12 inserted into the upper steel pipe 31a includes bolts and nuts 33 and 34 screwed to the upper end of the upper steel pipe 31a, and bolts and nuts 35 screwed to the lower end of the upper steel pipe 31a, Tighten and fix 36.

また、上側鋼管31aの外周には、作業用の足場金物37が複数段例えば6段設けられる。
下側鋼管31bの下端部には、新設アンテナ取付柱26の引上げ工程では上記したようにガイド金物25が装着されるが、引上げ完了後は詳細を図5に示すように重量受け金物40が装着される。
Further, a plurality of, for example, six stages of scaffolding hardware 37 for work are provided on the outer periphery of the upper steel pipe 31a.
At the lower end of the lower steel pipe 31b, the guide bracket 25 is mounted as described above in the pulling process of the new antenna mounting column 26. After the pulling is completed, the weight receiving bracket 40 is mounted as shown in detail in FIG. Is done.

図5(a)は鉄塔11の支持構体24に重量受け金物40を取付けた状態を示す平面図、図5(b)は同側面図、図5(c)は重量受け金物40のみの側面図である。
重量受け金物40は、半円筒状の1対の取付バンド41、42からなり、底部外側に床板43を備えると共に外周部に補強部材44を設けている。更に、取付バンド41、42は、半円状筒部の両側に取付部45を備えている。上記重量受け金物40は、底板46と共に支持構体24にボルト・ナット47により固定される。そして、重量受け金物40は、取付部45の部分において、ボルト・ナット48により新設アンテナ取付柱26を保持する。
5A is a plan view showing a state in which the weight receiver 40 is attached to the support structure 24 of the tower 11, FIG. 5B is a side view thereof, and FIG. 5C is a side view of the weight receiver 40 only. It is.
The weight receiver 40 is composed of a pair of semi-cylindrical mounting bands 41, 42, and includes a floor plate 43 on the outer side of the bottom and a reinforcing member 44 on the outer periphery. Furthermore, the attachment bands 41 and 42 are provided with attachment portions 45 on both sides of the semicircular cylindrical portion. The weight receiver 40 is fixed to the support structure 24 together with the bottom plate 46 by bolts and nuts 47. The weight receiver 40 holds the new antenna mounting column 26 with bolts and nuts 48 at the mounting portion 45.

次に、放送終了後の夜間におけるアンテナ取付け工事について説明する。
(1)既設の給電用分岐ケーブルを新しい分岐ケーブル(図示せず)に交換する。
Next, antenna installation work at night after the broadcast ends will be described.
(1) Replace the existing power supply branch cable with a new branch cable (not shown).

(2)電力分配器16を既設の分岐ケーブル及び主給電線15から取り外す。   (2) The power distributor 16 is removed from the existing branch cable and the main feeder 15.

(3)電力分配器16を索道(図示せず)により吊り上げて図2(a)に示すように鉄塔11の頂部側面に移設する。   (3) The power distributor 16 is lifted by a cableway (not shown) and transferred to the top side surface of the tower 11 as shown in FIG.

(4)次に、図2(a)において、新設アンテナ取付柱26を仮設架台21に固定している支持金物29のボルト・ナットを緩め、新設アンテナ取付柱26を移動できる状態とする。この状態で、レバーブロック27a、27bにより新設アンテナ取付柱26を引上げ、新設アンテナ取付柱26の下端部を支持構体24の位置まで移動する。このとき新設アンテナ取付柱26の上端は、図2(b)に示すように仮設架台21の頂部より所定長さL、例えば70cm突出し状態となる。   (4) Next, in FIG. 2A, the bolts and nuts of the support hardware 29 that fixes the new antenna mounting column 26 to the temporary mount 21 are loosened so that the new antenna mounting column 26 can be moved. In this state, the new antenna mounting column 26 is pulled up by the lever blocks 27a and 27b, and the lower end portion of the new antenna mounting column 26 is moved to the position of the support structure 24. At this time, the upper end of the new antenna mounting column 26 protrudes from the top of the temporary mount 21 by a predetermined length L, for example, 70 cm, as shown in FIG.

また、新設アンテナ取付柱26内に挿入されている既設アンテナ取付柱12は、新設アンテナ取付柱26の上側鋼管31aに設けられているフランジ32aに当接しているので、新設アンテナ取付柱26を引上げた際に同時に引上げられ、既設送信アンテナ14が所定長さL、この例では70cm嵩上げされる。この既設送信アンテナ14を嵩上げすることにより、この既設送信アンテナ14と鉄塔11の頂部との間に新しいアンテナを設置する余裕ができる。   Further, since the existing antenna mounting column 12 inserted into the new antenna mounting column 26 is in contact with the flange 32a provided on the upper steel pipe 31a of the new antenna mounting column 26, the new antenna mounting column 26 is pulled up. The existing transmitting antenna 14 is raised by a predetermined length L, in this example, 70 cm. By raising the existing transmission antenna 14, it is possible to afford to install a new antenna between the existing transmission antenna 14 and the top of the steel tower 11.

(5)上記のように新設アンテナ取付柱26を既設アンテナ取付柱12及び既設送信アンテナ14と共に上方に引上げた状態で、上記支持構体24に取付けられているガイド金物25を図5に詳細を示した重量受け金物40に交換し、新設アンテナ取付柱26の下端部を支持構体24に固定する。また、鉄塔11の頂部においても、支持金物29のボルト・ナットを締め付けて新設アンテナ取付柱26を鉄塔11に固定する。   (5) FIG. 5 shows the details of the guide hardware 25 attached to the support structure 24 in a state where the new antenna mounting column 26 is pulled upward together with the existing antenna mounting column 12 and the existing transmitting antenna 14 as described above. Then, the weight receiving metal 40 is replaced, and the lower end portion of the new antenna mounting column 26 is fixed to the support structure 24. Further, also at the top of the steel tower 11, the bolts and nuts of the support hardware 29 are tightened to fix the new antenna mounting column 26 to the steel tower 11.

(6)上記鉄塔11の頂部側面に移設した電力分配器16に上記新設の分岐ケーブル及び主給電線15を接続する。   (6) The new branch cable and the main feeder 15 are connected to the power distributor 16 moved to the top side surface of the tower 11.

(7)新設アンテナ取付柱26から鋼索28及び足場金物37を取り外すと共に仮設架台21からレバーブロック27a、27bを取り外した後、仮設架台21を撤去する。この仮設架台21は、索道及びウインチを使用して地上に降ろす。   (7) After removing the steel cable 28 and the scaffolding hardware 37 from the new antenna mounting column 26 and removing the lever blocks 27a and 27b from the temporary mount 21, the temporary mount 21 is removed. The temporary mount 21 is lowered to the ground using a cableway and a winch.

(8)索道及びウインチを使用し、図3に示すように例えば双ループアンテナ等のデジタル放送用のTV送信アンテナ、すなわち、新設送信アンテナ50を1面ずつ地上から鉄塔11の頂部に引上げて新設アンテナ取付柱26の上部に取付ける。   (8) Using a cableway and a winch, as shown in FIG. 3, for example, a TV transmission antenna for digital broadcasting such as a double loop antenna, that is, a new transmission antenna 50 is pulled up from the ground to the top of the steel tower 11 one by one. It is mounted on the upper part of the antenna mounting column 26.

(9)上記新設アンテナ取付柱26の上部周囲に所定面数の新設送信アンテナ50を取付けた後、図示しないが新設送信アンテナ50に対する分岐給電線及び電力分配器を鉄塔11の頂部側面に取付ける。そして、上記分岐給電線を新設送信アンテナ50及び電力分配器に接続すると共に、この電力分配器を主給電線15に接続する。この場合、既存の主給電線15に余裕があれば、この主給電線15を利用して新設送信アンテナ50への給電を行なうが、主給電線15に余裕がなければ新たに主給電線を増設する。   (9) After attaching the predetermined number of new transmitting antennas 50 around the upper part of the new antenna mounting column 26, a branch feeder and a power distributor for the new transmitting antenna 50 are attached to the top side of the tower 11 (not shown). The branch feeder is connected to the newly installed transmission antenna 50 and the power distributor, and the power distributor is connected to the main feeder 15. In this case, if the existing main feed line 15 has a margin, the main feed line 15 is used to feed the new transmission antenna 50. If the main feed line 15 does not have a margin, a new main feed line is newly added. Add more.

(10)新設アンテナ取付柱26に取付けてある足場金物37の取り外し、更には鉄塔11に取付けた索道やウインチ等の取り外しを行なう。   (10) The scaffolding hardware 37 attached to the newly installed antenna mounting column 26 is removed, and further the cableway and winch attached to the steel tower 11 are removed.

上記実施形態で示したように既設の鉄塔11に仮設架台21を設置した後、この仮設架台21に既設アンテナ取付柱12より径の大きい新設アンテナ取付柱26を取付け、この新設アンテナ取付柱26の先端部内側に既設アンテナ取付柱12を挿入し、レバーブロック27a、27bにより上記新設アンテナ取付柱26を既設アンテナ取付柱12と共に上方に引上げることで、既設送信アンテナ14を任意の長さ嵩上げすることができる。そして、上記既設送信アンテナ14の嵩上げにより、鉄塔11の頂部と既設送信アンテナ14との間にアンテナ設置スペースを設けることができ、そのスペースに新設送信アンテナ50を設置することができる。この場合、新設アンテナ取付柱26を鉄塔11の頂部から上方に所定長さ突出させて新設送信アンテナ50を取付けているので、既設アンテナ取付柱12に余分な負担を掛けることなく新設送信アンテナ50を設置することができる。   As shown in the above embodiment, after the temporary mount 21 is installed on the existing steel tower 11, a new antenna mounting column 26 having a diameter larger than that of the existing antenna mounting column 12 is mounted on the temporary mount 21. The existing antenna mounting column 12 is inserted inside the tip, and the new antenna mounting column 26 is pulled upward together with the existing antenna mounting column 12 by lever blocks 27a and 27b, so that the existing transmitting antenna 14 is raised to an arbitrary length. be able to. And by raising the said existing transmission antenna 14, an antenna installation space can be provided between the top part of the steel tower 11 and the existing transmission antenna 14, and the new transmission antenna 50 can be installed in that space. In this case, since the new transmission antenna 50 is mounted with the new antenna mounting column 26 protruding upward from the top of the tower 11 by a predetermined length, the new transmission antenna 50 is mounted without placing an extra burden on the existing antenna mounting column 12. Can be installed.

また、上記実施形態で示したアンテナの取付方法を使用することで、鉄塔11が高くてクレーン車を使用できない場合、あるいは山間地などクレーン車が進入できないような場所においても、既存の鉄塔11に新設送信アンテナ50を追加して設置することができる。   In addition, by using the antenna mounting method shown in the above embodiment, when the steel tower 11 is too high to use a crane vehicle, or in a place where a crane vehicle cannot enter such as a mountainous area, the existing steel tower 11 can be used. A new transmission antenna 50 can be added and installed.

また、昼間時に仮設架台21の取付けなど送信に影響を与えない準備工事を行なっているので、送信を停止した夜間における工事を短時間で行なうことが可能である。
なお、昼間時に既設送信アンテナ14の送信を停止できる状況であれば、上記夜間における工事を昼間時に行なっても良いことは勿論である。
In addition, since preparatory work that does not affect transmission such as attachment of the temporary mount 21 is performed during the daytime, it is possible to perform the work at night when transmission is stopped in a short time.
Needless to say, the construction at night may be performed at daytime as long as the transmission of the existing transmission antenna 14 can be stopped at daytime.

本発明の一実施形態に係るアンテナの取付方法を示すもので、(a)はアンテナ取付工事を開始する前の状態を示す図、(b)はアンテナ取付工事の途中の作業工程を示す図である。The antenna attachment method which concerns on one Embodiment of this invention is shown, (a) is a figure which shows the state before starting antenna attachment construction, (b) is a figure which shows the work process in the middle of antenna attachment construction. is there. 同実施形態におけるアンテナ取付工事の途中の作業工程を示す図である。It is a figure which shows the work process in the middle of the antenna attachment construction in the same embodiment. 同実施形態におけるアンテナ取付工事の作業完了後の状態を示す図である。It is a figure which shows the state after completion of the work of the antenna attachment construction in the same embodiment. 同実施形態における新設アンテナ取付柱部分の詳細を示す側面図である。It is a side view which shows the detail of the newly installed antenna attachment pillar part in the embodiment. (a)は同実施形態における鉄塔の支持構体に重量受け金物を取付けた状態を示す平面図、(b)は同側面図、(c)は重量受け金物のみの側面図である。(A) is a top view which shows the state which attached the weight receiving metal object to the support structure of the steel tower in the embodiment, (b) is the same side view, (c) is a side view of only a weight receiving metal object.

符号の説明Explanation of symbols

11…鉄塔、12…既設アンテナ取付柱、13…鉄塔の支持構体、14…既設送信アンテナ、15…主給電線、16…電力分配器、21…仮設架台、22…重量受け金物、23…角材、24…支持構体、25…ガイド金物、26…新設アンテナ取付柱、27a、27b…レバーブロック、28…鋼索、29…支持金物、31a…上側鋼管、31b…下側鋼管、32a、32b…フランジ、33〜36…ボルト・ナット、37…足場金物、40…重量受け金物、41、42…取付バンド、43…床板、44…補強部材、45…取付部、46…底板、47、48…ボルト・ナット、50…新設送信アンテナ。   DESCRIPTION OF SYMBOLS 11 ... Steel tower, 12 ... Existing antenna mounting column, 13 ... Steel tower support structure, 14 ... Existing transmission antenna, 15 ... Main feed line, 16 ... Power distributor, 21 ... Temporary mount, 22 ... Heavy metal receiver, 23 ... Square material 24 ... support structure 25 ... guide hardware 26 ... new antenna mounting column 27a, 27b ... lever block 28 ... steel cable 29 ... support hardware 31a ... upper steel pipe 31b ... lower steel pipe 32a, 32b ... flange 33-36 ... bolts and nuts, 37 ... scaffolding hardware, 40 ... weight receiving hardware, 41, 42 ... mounting band, 43 ... floor plate, 44 ... reinforcing member, 45 ... mounting portion, 46 ... bottom plate, 47, 48 ... bolt・ Nut, 50 ... New transmission antenna.

Claims (1)

鉄塔の上部に設置された既設アンテナ取付柱にアンテナが取付けられている状態で、前記鉄塔の上部に新規のアンテナを追加して取付けるアンテナの取付方法において、
前記既設アンテナ取付柱より径が大きく且つ該既設アンテナ取付柱を支持するためのフランジを備えた新設アンテナ取付柱を鉄塔の下方より引上げ、該新設アンテナ取付柱の上部内側に前記既設アンテナ取付柱の下部を挿入し、該既設アンテナ取付柱の下端部を前記フランジに当接させ、前記新設アンテナ取付柱を前記既設アンテナ取付柱と共に引上げて既設アンテナを所定高さ嵩上げし、該嵩上げしたスペースに新規のアンテナを追加して取付けることを特徴とするアンテナの取付方法。
In the antenna mounting method in which a new antenna is added to the top of the steel tower while the antenna is attached to an existing antenna mounting pillar installed at the top of the steel tower,
A new antenna mounting column having a diameter larger than that of the existing antenna mounting column and having a flange for supporting the existing antenna mounting column is pulled up from below the steel tower, and the existing antenna mounting column is placed inside the upper portion of the new antenna mounting column. Insert the lower part, bring the lower end of the existing antenna mounting column into contact with the flange, pull up the new antenna mounting column together with the existing antenna mounting column to raise the existing antenna to a predetermined height, and add a new space to the raised space. An antenna mounting method, wherein an additional antenna is additionally mounted.
JP2004330878A 2004-11-15 2004-11-15 Mounting method of antenna Expired - Fee Related JP4469259B2 (en)

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JP4968348B2 (en) * 2010-02-04 2012-07-04 住友電気工業株式会社 Super turn style antenna and its construction method
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