JP3836011B2 - Cable injection type vibration isolator - Google Patents

Cable injection type vibration isolator Download PDF

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Publication number
JP3836011B2
JP3836011B2 JP2001327722A JP2001327722A JP3836011B2 JP 3836011 B2 JP3836011 B2 JP 3836011B2 JP 2001327722 A JP2001327722 A JP 2001327722A JP 2001327722 A JP2001327722 A JP 2001327722A JP 3836011 B2 JP3836011 B2 JP 3836011B2
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Japan
Prior art keywords
cable
fixing
vibration isolator
gap
pipe
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JP2001327722A
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JP2003129416A (en
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渡 大橋
紘一郎 薗田
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SE Corp
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SE Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、例えば、斜張橋における斜材ケーブル、若しくは、吊り橋におけるケーブルに垂下されるハンガーケーブル等のケーブルを、橋桁側又は主塔側の定着部において定着させる際に使用される防振装置に関する。
【0002】
【従来の技術】
従来、例えば、斜張橋における斜材ケーブルの定着部における防振装置としては、図16に示すように、主桁14における定着管15の自由端部側に、ケーブル16の外周面と定着管内周面との隙間18に弾性材,環状のクッション若しくは袋部材17等を嵌着させて、主桁・主塔の交通荷重による振動や風による振動の影響がケーブル定着部に伝達しないように、防振装置を設けたものが知られている(特開平8−218319号、特開平9−165718号)。
【0003】
前記防振装置は、例えば、固形ゴム材等の弾性部材を使用して、前記定着管15の自由端部側における前記隙間18に嵌装している。
【0004】
【発明が解決しようとする課題】
しかしながら、前記固形ゴム材等を前記隙間18に嵌装させる際に、定着管15に対するケーブル16の偏心量が大きいと、そのままでは挿入できないことになり、固形ゴム材を削ったり追加したりする等の加工調整が必要となる。ケーブル16の緊張・定着後に当該ケーブルの偏心量によって、ゴム材の寸法を決定して上記防振装置の装着工事を行うのでは、工期の遅れとなる。
【0005】
また、前記ゴム材を圧縮して前記隙間18に挿入・嵌装させるものなので、当該ゴム材の受け枠・押さえプレートや該押さえプレートでゴム材を圧縮方向に押していくための締め込みボルト等、多数の部材が必要であり、部材コストが嵩むという課題がある。本発明に係るケーブルの注入型防振装置は、このような課題を解消するために提案されたものである。
【0006】
【課題を解決するための手段】
本発明に係るケーブルの注入型防振装置の上記課題を解決するための要旨は、ケーブルを定着させる定着部における定着管の自由端部で、当該定着管とケーブルとの隙間に嵌装される防振装置であって、前記防振装置は、前記隙間の周方向に遊嵌状態で配設される弧状枠体と、前記隙間のケーブル軸心方向に沿った方向において前記両弧状枠体の端部間に架設される側方枠体と、前記弧状枠体に貼着される弾性袋部材と、該弾性袋部材で密封された空間内に前記隙間の程度に応じて充填される充填材とで形成されることである。
【0007】
前記充填材は空間内に所要の圧力にして充填され、隙間に遊嵌状態で無挿入力で配設される弾性袋部材を膨張させることで、定着管とケーブルとの隙間に防振装置が密着して嵌装されること、;前記側方枠体にはその軸心方向に沿って両端へ貫通した固定部材用通し孔が形成され、定着管の自由端部の開口部には固定用支持部材が設けられ、前記固定部材用通し孔に固定部材を挿通して前記固定用支持部材に該固定部材の一端部を定着させて、防振装置の位置決めがされていること、;前記固定用支持部材と該固定用支持部材側に配置される弧状枠体とには、充填材を充填するための注入パイプと排出パイプを装着する為の貫通孔が連通させて設けられていることを含むものである。
【0008】
本発明に係るケーブルの注入型防振装置によれば、例えば、橋桁若しくは主塔における定着部において、定着管の自由端部側の該定着管とケーブルとの隙間に、防振装置が遊嵌状態で、即ち、無挿入力で装着される。このことは、円筒状の定着管に挿通される断面円形状のケーブルが、必ずしも設計通りに均等な隙間で張設されることが困難であっても、偏って狭くなった隙間に抵抗無く前記防振装置を装着させることができる。そして、充填材を弾性袋部材に注入して更に所要の圧力を加えることで、この弾性袋部材が膨張し、定着管の内壁とケーブルの外壁とに密着するものである。このように、ケーブルが偏心して張設されても、防振装置の装着工事が極めて容易になる。
【0009】
また、防振装置における側方枠体の固定部材用通し孔があり、定着管の自由端部の開口部には固定用支持部材が設けられ、固定部材によってしっかりと固定され位置決めされるので、ケーブルの振動により、次第に防振装置が下方向にずれ落ちるというようなことがない。
【0010】
【発明の実施の形態】
次に、本発明に係るケーブルの注入型防振装置について図面を参照して説明する。なお、発明の理解を容易にするため、従来例に対応する部分には従来例と同一の符号を付けて説明する。当該ケーブルの注入型防振装置1は、例えば、斜張橋の斜材ケーブル、吊り橋のハンガーケーブル、その他、緊張されて2点間に架設・定着されるケーブルの防振が目的であって、自動車等の人工的な振動若しくは雨・風等の自然的な振動の影響を受けるケーブルの定着部を保護するために使用されるものである。
【0011】
前記防振装置1の第1実施例に係る構造は、図1に示すように、定着管15とケーブル16との隙間において、その周方向に遊嵌状態で配設される弧状枠体2がある。該弧状枠体2は、金属製,プラスチック製(硬質ゴム製等)であって、図4に示すように、その内側円弧の半径はケーブル16の半径よりも大きく、その外側半径は、定着管15の内側半径よりも小さく、隙間18の半径方向の幅よりも狭く、該隙間18に遊嵌される大きさの形状である。また、周方向の長さは、一例として3分割となるような長さである。
【0012】
前記隙間18のケーブル軸心方向に沿った方向aにおいて、前記両弧状枠体2の端部間に架設される側方枠体3がある。該側方枠体3は、金属製,プラスチック製(硬質ゴム製)であって、一例として円形棒状体でその長さは任意である。前記弧状枠体2と側方枠体3との組立においては、これらがゴム製であれば、ゴム用接着剤で連結・固着され、一体的に合体されるものである。
【0013】
前記弧状枠体2と側方枠体3とには、組立後には互いに連通することになる固定部材用通し孔である貫通孔2a,3aが各々に設けられている。更に、図1(A),(B)に示すように、充填材の注入用として、両弧状枠体2,2のうちの一方に、注入用貫通孔2bと、排気用貫通孔2cとが設けられている。
【0014】
前記注入用貫通孔2bには、例えば、金属製の注入パイプ4が挿着され、排気用貫通孔2cには排出パイプ5が装着される。図3に示すように、充填材が鉛直方向において、下から上へと順に充填されて、空間内の空気が内部に溜まることなく排気されるように、前記注入パイプ4と排出パイプ5との長さが調節されるものである。
【0015】
図1(B)に示すように、弧状枠体2と側方枠体3とが接着剤等で固着された後に、図2に示すように、ゴム板等で形成される可撓性の薄い板材を、ゴム用接着剤を使用して前記円弧状枠材2,2の周方向に沿って上側及び下側に一連に巻き付けて貼着する。この巻装された板材が弾性袋部材6となり、該弾性袋部材6と弧状枠体2,2とによって、充填材を充填する空間が形成される。
【0016】
このようにして形成される防振装置1を、例えば、橋桁におけるケーブルの定着部において説明する。定着管15の自由端部において、該定着管15とケーブル16との隙間に嵌装するには、まず、図5乃至図6に示すように、予め二つ割り若しくは三つ割の平板な固定用支持部材である金属製又はプラスチック製の固定プレート7に、固定部材である全ネジ棒8とナット9,9とでもって、ケーブル16の周りで、全ネジ棒8を弧状枠体2の貫通孔2a,側方枠体3の貫通孔3a,及び固定プレート7の固定部材用通し孔として設けられている貫通孔に各々貫通させて挿通し、両端部においてナット9,9で固定する。
【0017】
前記防振装置1の貫通孔2b,2cが設けられている弧状枠体2が、固定プレート7に当接することになる。充填材の充填のためである。防振装置1の注入パイプ4と排出パイプ5は、これに対応して設けられている固定プレート7の貫通孔から外部に突出させておく。
【0018】
前記一体的に固定された固定プレート7及び防振装置1を、定着管15の自由端部の開口へと移動させる。防振装置1は、定着管15とケーブル16との隙間18に、弧状枠体2の形状及び幅寸法から、無挿入力で遊嵌される。また、固定プレート7が、定着管15の開口端面に当接される。
【0019】
定着管15の開口端面に設けられたネジ孔と、固定プレート7のボルト用貫通孔とを位置合わせして、固定ボルト10を締結させて固定プレート7を前記開口端面に固定する。この固定プレート7により、前記隙間18内における防振装置1の位置決めがなされる。
【0020】
次に、図7に示すように、固定プレート7の表面から外部に突出させておいた防振装置1の注入パイプ4と排出パイプ5とに、ビニルホース11,13を連結する。前記充填材の注入用のビニルホース11は、一端が前記注入パイプ4に、他端が注入装置(例えばダイヤフラムポンプ)12の吐出口に各々接続されている。排出パイプ5に一端が接続された排出側のビニルホース13は、その他端を防振装置1の高さよりも上位置に配設する。
【0021】
前記注入装置12に樹脂容器12aと、エアーコンプレッサー12bとを接続する。こうして、充填作業の準備が整い次第、エアーコンプレッサー12bを駆動させ、ビニルホース11から注入パイプ4を介して、防振装置1の空間に、充填材(二液混合硬化性樹脂等、特に限定せず)を注入する。
【0022】
前記充填材が防振装置1の内部空間に次第に充填され、空気がビニルホース13から抜けて、その後、ビニルホース13に充填材がオーバーフローしたことを確認すると、該ビニルホース13の先端を閉口する。そして、充填材の注入圧力を適宜に増加させて、防振装置1の空間内に所要の圧力にして充填材を充填する。これにより、図8乃至図9に示すように、前記隙間18に遊嵌状態で無挿入力で配設された弾性袋部材6を充填材19で膨張させる。図示するように、定着管15とケーブル16との隙間18に、防振装置1が密着した状態となる。
【0023】
前記防振装置1が、周方向に3分割で配設されている場合、順次、各防振装置1に充填材19を充填することで、ケーブル16が、定着管15に対して偏心して張架設されて隙間18の幅が全周に亘って均一でなくても、何等の支障無く防振装置1をセットすることができるものである。
【0024】
そして、前記充填材19が硬化した後は、弾性袋部材6と充填材19とが全体として弾性体を形成し、ケーブル16が自動車若しくは雨・風等によって振動しても、その半径方向の振動を抑制して、定着管15の固定側の定着装置に前記ケーブル16の振動が伝達されず、該定着装置が保護されるものである。
【0025】
本発明に係る注入型防振装置1の第2実施例は、防振装置における弧状枠体2dの分割による一態様を示すものであり、図10に示すように、一つ割の例を示している。弧状枠体2dは、ゴム体等のプラスチックで形成される弾性部材であり、ケーブル16に取り付ける際には、1箇所のスリット部分を該ケーブル16の直径より大きく開いて装着される。
【0026】
図11(A)に示すように、二つ割りの固定プレート7,7によって、定着管15の自由端部の開口に位置決めして防振装置を固定した後、充填材19を注入パイプ4から注入し、図11(B)に示すように、弾性袋部材6を膨張させて定着管15とケーブル16とに密着させる。充填材19の充填方法等は、前記第1実施例と同様である。これにより、防振効果において第1実施例と同様の作用・効果が得られるものである。
【0027】
本発明に係る注入型防振装置1の第3実施例は、防振装置における弧状枠体2eの分割による一態様を示すものであり、図12に示すように、二つ割の例を示している。前記第1実施例又は第2実施例と、弧状枠体2e及び弾性袋部材6の形状等が異なるのみで、図13に示すように、定着管15の隙間18への防振装置の嵌着や充填材の充填等、そして、当該防振装置の作用・効果は前記第1実施例,第2実施例の場合と同様である。
【0028】
本発明に係る注入型防振装置1の第4実施例は、ケーブル16が、円形ではなく、一例として六角形状に束ねられている場合であって、それ用に形成した防振装置における枠体2fの分割による一態様を示すものであり、図14に示すように、二つ割の例を示している。
【0029】
この第4実施例の枠体2fは、金属製若しくはプラスチック製であって、その内側部分が六角形状のケーブル外形を半分にした形に沿った形に形成されている。よって、六角形状のケーブル16に装着された状態では、図14に示すように、ケーブル16に当初から密着された状態となる。この枠体2を二つに分割したが、一つ割若しくは三つ割等にすることを妨げるものではなく、六角形状のケーブル16に対して最も都合の良いものとして、二つに分割した例を示したものである。
【0030】
この第4実施例において、図15に示すように、二つ割りの固定プレート7,7に全ネジ棒8で防振装置を固定して、その後、定着管15の隙間18への当該防振装置の嵌着や充填材の充填等、そして、当該防振装置の作用・効果は前記第1実施例,第2実施例,第3実施例の場合と同様である。この実施例では、弾性袋部材6は、その内側がすでにケーブル16に密着しているので、半径方向の外側に向かって膨張し、定着管15の内周面に密着する。
【0031】
前記ケーブル16の偏心によって隙間18の間隔が不均一でも、その状態に応じ所要圧力にて、弾性袋部材6が外側に膨張するものである。このようにして、ケーブル16の外形状が六角形若しくはその他の多角形状であっても、防振装置として前記第1実施例等と同様の作用・効果が得られるものである。
【0032】
【発明の効果】
以上説明したように、本発明に係るケーブルの注入型防振装置は、ケーブルを定着させる定着部における定着管の自由端部で、当該定着管とケーブルとの隙間に嵌装される防振装置であって、防振装置は、前記隙間の周方向に遊嵌状態で配設される弧状枠体と、前記隙間のケーブル軸心方向に沿った方向において前記両弧状枠体の端部間に架設される側方枠体と、前記弧状枠体に貼着される弾性袋部材と、該弾性袋部材で密封された空間内に前記隙間の程度に応じて充填される充填材とで形成されるので、ケーブルの振動を定着部に伝達しないようにすると共に、定着管とケーブルとの隙間へ容易に遊嵌状態に装着でき、ケーブルの偏心があっても、作業性が劣化せず作業効率の向上により工期短縮となると言う優れた効果を奏するものである。
【0033】
前記充填材は空間内に所要の圧力にして充填され、隙間に遊嵌状態で無挿入力で配設される弾性袋部材を膨張させることで、定着管とケーブルとの隙間に防振装置が密着して嵌装されるので、ケーブルの偏芯に柔軟に対応させることが可能となる。
【0034】
前記側方枠体にはその軸心方向に沿って両端へ貫通した固定部材用通し孔が形成され、定着管の自由端部の開口部には固定用支持部材が設けられ、前記固定部材用通し孔に固定部材を挿通して前記固定用支持部材に該固定部材の一端部を定着させて、防振装置の位置決めがされているので、ケーブルの振動により防振装置が位置ズレする様なことがない。
【0035】
固定用支持部材と該固定用支持部材側に配置される弧状枠体とには、充填材を充填するための注入パイプと排出パイプを装着する為の貫通孔が連通させて設けられているので、充填作業の準備も容易となる。
【図面の簡単な説明】
【図1】本発明に係るケーブルの注入型防振装置の第1実施例に係る、分解斜視図(A),(B)である。
【図2】同本発明に係るケーブルの注入型防振装置の第1実施例に係る斜視図である。
【図3】同本発明に係るケーブルの注入型防振装置の第1実施例に係る平面図である。
【図4】同本発明に係るケーブルの注入型防振装置の第1実施例に係り、定着管とケーブルと隙間に嵌着させた状態の断面図である。
【図5】同本発明に係るケーブルの注入型防振装置の第1実施例に係り、定着管とケーブルと隙間に遊嵌状態に嵌着させた状態の一部横断面図である。
【図6】図5におけるA−A線に沿った視図である。
【図7】同本発明に係るケーブルの注入型防振装置に充填材を充填する様子を示す説明図である。
【図8】同本発明に係るケーブルの注入型防振装置の第1実施例に係り、充填材を充填した後の一部横断面図である。
【図9】図8におけるB−B線に沿った断面図である。
【図10】同本発明に係るケーブルの注入型防振装置の第2実施例に係り、定着管とケーブルと隙間に遊嵌状態に嵌着させた状態の断面図である。
【図11】同本発明に係るケーブルの注入型防振装置の第2実施例に係り、定着管とケーブルと隙間に嵌着させた状態で、定着管の外側から見た断面図(A)と、充填材を充填した後の一部横断面図(B)である。
【図12】同本発明に係るケーブルの注入型防振装置の第3実施例に係り、定着管とケーブルと隙間に遊嵌状態に嵌着させた状態の断面図である。
【図13】同本発明に係るケーブルの注入型防振装置の第3実施例に係り、定着管とケーブルと隙間に嵌着させた状態で、定着管の外側から見た断面図(A)と、充填材を充填した後の一部横断面図(B)である。
【図14】同本発明に係るケーブルの注入型防振装置の第4実施例に係り、定着管とケーブルと隙間に遊嵌状態に嵌着させた状態の断面図である。
【図15】同本発明に係るケーブルの注入型防振装置の第4実施例に係り、定着管とケーブルと隙間に嵌着させた状態で、定着管の外側から見た断面図(A)と、充填材を充填した後の一部横断面図(B)である。
【図16】従来例に係る防振装置の使用状態説明図である。
【符号の説明】
1 ケーブルの注入型防振装置、 2 弧状枠体、
2a 貫通孔、 2b 注入用貫通孔、
2c 排気用貫通孔、 2d,2e,2f 弧状枠体、
3 側方枠体、 4 注入パイプ、
5 排出パイプ、 6 弾性袋部材、
7 固定プレート、 8 全ネジ棒、
9 ナット、 10 固定ボルト、
11 ビニルホース、 12 注入装置、
12a 樹脂容器、 12b エアーコンプレッサー、
13 ビニルホース、 14 主桁、
15 定着管、 16 ケーブル、
17 袋部材、 18 隙間、
19 充填材。
[0001]
BACKGROUND OF THE INVENTION
The present invention is, for example, an anti-vibration device used when fixing a cable such as a diagonal cable in a cable-stayed bridge or a hanger cable suspended from a cable in a suspension bridge at a fixing portion on a bridge girder side or a main tower side. About.
[0002]
[Prior art]
Conventionally, for example, as an anti-vibration device in a fixing portion of an oblique cable in a cable-stayed bridge, as shown in FIG. An elastic material, an annular cushion, or a bag member 17 or the like is fitted into the gap 18 with the peripheral surface so that the influence of vibration due to traffic load of the main girder / main tower and vibration due to wind is not transmitted to the cable fixing portion. A device provided with an anti-vibration device is known (Japanese Patent Laid-Open Nos. 8-218319 and 9-165718).
[0003]
The vibration isolator is fitted in the gap 18 on the free end side of the fixing pipe 15 using, for example, an elastic member such as a solid rubber material.
[0004]
[Problems to be solved by the invention]
However, when the solid rubber material or the like is fitted into the gap 18, if the eccentric amount of the cable 16 with respect to the fixing tube 15 is large, the cable cannot be inserted as it is, and the solid rubber material is scraped or added. It is necessary to adjust the processing. If the installation of the vibration isolator is performed by determining the size of the rubber material based on the eccentric amount of the cable 16 after the cable 16 is tensioned and fixed, the construction period is delayed.
[0005]
In addition, since the rubber material is compressed and inserted into the gap 18, it is inserted into the gap 18, a clamping frame for pushing the rubber material in the compression direction with the receiving frame / pressing plate of the rubber material, etc. Many members are required, and there is a problem that the member cost increases. The cable injection type vibration isolator according to the present invention has been proposed in order to solve such a problem.
[0006]
[Means for Solving the Problems]
The gist of the cable injection type vibration isolator according to the present invention is to solve the above-mentioned problem by fitting the fixing pipe for fixing the cable at the free end of the fixing pipe in the gap between the fixing pipe and the cable. An anti-vibration device, wherein the anti-vibration device includes: an arcuate frame body that is loosely fitted in a circumferential direction of the gap; and an arcuate frame body in a direction along the cable axial direction of the gap. A side frame constructed between end portions, an elastic bag member attached to the arcuate frame, and a filler filled in a space sealed by the elastic bag member according to the degree of the gap It is formed with.
[0007]
The filler is filled in the space at a required pressure, and an elastic bag member that is loosely fitted in the gap and is disposed with no insertion force is inflated, so that a vibration isolator is provided in the gap between the fixing pipe and the cable. The side frame is formed with fixing member through-holes penetrating to both ends along the axial direction of the side frame body, and is fixed to the opening at the free end of the fixing pipe. A support member is provided, and the vibration isolator is positioned by inserting a fixing member through the fixing member through hole and fixing one end of the fixing member to the fixing support member; The support member for use and the arcuate frame disposed on the side of the support member for fixing are provided with through holes for mounting the injection pipe and the discharge pipe for filling the filler. Is included.
[0008]
According to the cable injection type vibration isolator according to the present invention, for example, in the fixing portion of the bridge girder or the main tower, the vibration isolator is loosely fitted in the gap between the fixing tube and the cable on the free end side of the fixing tube. It is mounted in a state, that is, with no insertion force. This means that the cable having a circular cross-section inserted through the cylindrical fixing tube is not necessarily stretched with a uniform gap as designed, and the gap is narrowly biased without resistance. A vibration isolator can be attached. Then, when the filler is injected into the elastic bag member and further required pressure is applied, the elastic bag member expands and comes into close contact with the inner wall of the fixing tube and the outer wall of the cable. In this way, even if the cable is eccentrically stretched, the installation work of the vibration isolator becomes extremely easy.
[0009]
In addition, there is a through hole for the fixing member of the side frame body in the vibration isolator, and a fixing support member is provided at the opening of the free end of the fixing tube, so that the fixing member is firmly fixed and positioned. The vibration isolator does not gradually shift downward due to the vibration of the cable.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Next, a cable injection type vibration isolator according to the present invention will be described with reference to the drawings. In order to facilitate understanding of the invention, portions corresponding to the conventional example are denoted by the same reference numerals as those of the conventional example. The cable injection type vibration isolator 1 is for the purpose of, for example, a cable for a cable stayed on a cable-stayed bridge, a hanger cable for a suspension bridge, and other cables that are tensioned and installed between two points. It is used to protect cable fixing parts that are affected by artificial vibrations such as automobiles or natural vibrations such as rain and wind.
[0011]
As shown in FIG. 1, the structure according to the first embodiment of the vibration isolator 1 has an arcuate frame 2 that is disposed loosely in the circumferential direction in the gap between the fixing tube 15 and the cable 16. is there. The arc-shaped frame 2 is made of metal or plastic (made of hard rubber or the like). As shown in FIG. 4, the radius of the inner arc is larger than the radius of the cable 16, and the outer radius is fixed to the fixing tube. 15 is smaller than the inner radius of 15, narrower than the radial width of the gap 18, and is sized to be loosely fitted in the gap 18. Moreover, the length of the circumferential direction is a length which becomes 3 division as an example.
[0012]
In the direction a along the cable axis direction of the gap 18, there is a side frame 3 constructed between the ends of the arcuate frames 2. The side frame 3 is made of metal or plastic (made of hard rubber). As an example, the side frame 3 is a circular rod-like body, and its length is arbitrary. In the assembly of the arc-shaped frame body 2 and the side frame body 3, if they are made of rubber, they are connected and fixed with an adhesive for rubber and united together.
[0013]
The arc-shaped frame body 2 and the side frame body 3 are provided with through holes 2a and 3a, which are through holes for a fixing member, which communicate with each other after assembly. Further, as shown in FIGS. 1A and 1B, an injection through hole 2b and an exhaust through hole 2c are provided in one of the arcuate frames 2 and 2 for injection of the filler. Is provided.
[0014]
For example, a metal injection pipe 4 is inserted into the injection through hole 2b, and a discharge pipe 5 is attached to the exhaust through hole 2c. As shown in FIG. 3, the filling pipe 4 and the discharge pipe 5 are filled so that the filling material is filled in order from the bottom to the top in the vertical direction, and the air in the space is exhausted without accumulating inside. The length is adjusted.
[0015]
As shown in FIG. 1B, after the arc-shaped frame 2 and the side frame 3 are fixed with an adhesive or the like, the flexible thin film formed with a rubber plate or the like as shown in FIG. A board | plate material is wound in series on the upper side and the lower side along the circumferential direction of the said arc-shaped frame materials 2 and 2 using the adhesive agent for rubber | gum, and is stuck. The wound plate material becomes the elastic bag member 6, and the space for filling the filler is formed by the elastic bag member 6 and the arcuate frames 2 and 2.
[0016]
The anti-vibration device 1 formed in this way will be described in a cable fixing portion in a bridge girder, for example. In order to fit in the gap between the fixing tube 15 and the cable 16 at the free end portion of the fixing tube 15, first, as shown in FIGS. A metal or plastic fixing plate 7 which is a member is provided with all screw rods 8 and nuts 9 and 9 which are fixing members, and all the screw rods 8 are passed through holes 2 a of the arcuate frame 2 around the cable 16. The through holes 3a of the side frame 3 and the through holes provided as through holes for the fixing member of the fixing plate 7 are respectively inserted through the through holes 3 and fixed with nuts 9 at both ends.
[0017]
The arcuate frame 2 provided with the through holes 2 b and 2 c of the vibration isolator 1 comes into contact with the fixed plate 7. This is for filling the filler. The injection pipe 4 and the discharge pipe 5 of the vibration isolator 1 are protruded to the outside from the through holes of the fixed plate 7 provided corresponding thereto.
[0018]
The integrally fixed fixing plate 7 and the vibration isolator 1 are moved to the opening at the free end of the fixing tube 15. The vibration isolator 1 is loosely fitted in the gap 18 between the fixing tube 15 and the cable 16 with no insertion force due to the shape and width of the arcuate frame 2. Further, the fixed plate 7 is brought into contact with the opening end surface of the fixing tube 15.
[0019]
The screw hole provided in the opening end face of the fixing tube 15 and the bolt through hole of the fixing plate 7 are aligned, and the fixing bolt 10 is fastened to fix the fixing plate 7 to the opening end face. The vibration isolator 1 is positioned in the gap 18 by the fixing plate 7.
[0020]
Next, as shown in FIG. 7, vinyl hoses 11 and 13 are connected to the injection pipe 4 and the discharge pipe 5 of the vibration isolator 1 that protrudes outward from the surface of the fixed plate 7. One end of the vinyl hose 11 for injecting the filler is connected to the injection pipe 4 and the other end is connected to a discharge port of an injection device (for example, a diaphragm pump) 12. The vinyl hose 13 on the discharge side, one end of which is connected to the discharge pipe 5, is disposed at a position above the height of the vibration isolator 1 at the other end.
[0021]
A resin container 12a and an air compressor 12b are connected to the injection device 12. In this way, as soon as the filling operation is ready, the air compressor 12b is driven, and the filler (two-component mixed curable resin, etc.) is particularly limited to the space of the vibration isolator 1 from the vinyl hose 11 through the injection pipe 4. )).
[0022]
When the filler is gradually filled into the internal space of the vibration isolator 1, air is released from the vinyl hose 13, and then it is confirmed that the filler has overflowed into the vinyl hose 13, the tip of the vinyl hose 13 is closed. . Then, the filler injection pressure is increased as appropriate to fill the space of the vibration isolator 1 with the required pressure. As a result, as shown in FIGS. 8 to 9, the elastic bag member 6, which is loosely fitted in the gap 18 and is disposed with no insertion force, is expanded with the filler 19. As shown in the figure, the vibration isolator 1 is in close contact with the gap 18 between the fixing tube 15 and the cable 16.
[0023]
When the vibration isolator 1 is arranged in three parts in the circumferential direction, the cables 16 are eccentrically stretched with respect to the fixing pipe 15 by sequentially filling the vibration isolator 1 with the filler 19. Even if it is constructed and the width of the gap 18 is not uniform over the entire circumference, the vibration isolator 1 can be set without any trouble.
[0024]
After the filler 19 is cured, the elastic bag member 6 and the filler 19 form an elastic body as a whole, and even if the cable 16 vibrates due to automobiles, rain, wind, etc., the radial vibration thereof Thus, the vibration of the cable 16 is not transmitted to the fixing device on the fixed side of the fixing tube 15, and the fixing device is protected.
[0025]
The second embodiment of the injection type vibration isolator 1 according to the present invention shows one mode by dividing the arc-shaped frame 2d in the vibration isolator, and shows an example of 10% as shown in FIG. ing. The arc-shaped frame 2d is an elastic member formed of a plastic such as a rubber body, and is attached with a slit portion opened at a position larger than the diameter of the cable 16 when attached to the cable 16.
[0026]
As shown in FIG. 11A, the vibration isolator is fixed by being positioned at the opening at the free end of the fixing pipe 15 by the split fixing plates 7 and 7, and then the filler 19 is injected from the injection pipe 4. As shown in FIG. 11B, the elastic bag member 6 is inflated so as to be in close contact with the fixing tube 15 and the cable 16. The filling method of the filler 19 is the same as that in the first embodiment. As a result, the same effects and advantages as in the first embodiment can be obtained in terms of the anti-vibration effect.
[0027]
The third embodiment of the injection type vibration isolator 1 according to the present invention shows one aspect by dividing the arc-shaped frame 2e in the vibration isolator, and shows an example of 20% as shown in FIG. ing. As shown in FIG. 13, as shown in FIG. 13, the vibration isolator is fitted into the gap 18 of the fixing pipe 15, except that the arc-shaped frame 2 e and the elastic bag member 6 are different from the first or second embodiment. In addition, the filling and the like of the filler, and the action and effect of the vibration isolator are the same as those in the first and second embodiments.
[0028]
The fourth embodiment of the injection type vibration isolator 1 according to the present invention is a case where the cable 16 is not circular but is bundled in a hexagonal shape as an example, and the frame body in the vibration isolator formed therefor FIG. 14 shows an aspect of 2f division, and an example of two divisions is shown as shown in FIG.
[0029]
The frame body 2f of the fourth embodiment is made of metal or plastic, and the inner part thereof is formed in a shape along the shape of halving the hexagonal cable outer shape. Therefore, in the state of being attached to the hexagonal cable 16, the cable 16 is in close contact with the cable 16 from the beginning as shown in FIG. 14. Although this frame 2 is divided into two, it does not prevent it from being divided into one or three, etc., and it is divided into two as the most convenient for the hexagonal cable 16 Is shown.
[0030]
In the fourth embodiment, as shown in FIG. 15, the vibration isolator is fixed to the split fixing plates 7 and 7 with all the screw rods 8, and then the vibration isolator is fixed to the gap 18 of the fixing pipe 15. The fitting, filling of the filling material, and the like, and the function and effect of the vibration isolator are the same as those in the first embodiment, the second embodiment, and the third embodiment. In this embodiment, since the inner side of the elastic bag member 6 is already in close contact with the cable 16, the elastic bag member 6 is expanded toward the outer side in the radial direction and is in close contact with the inner peripheral surface of the fixing tube 15.
[0031]
Even if the gap 18 is not uniform due to the eccentricity of the cable 16, the elastic bag member 6 expands to the outside at a required pressure according to the state. Thus, even if the outer shape of the cable 16 is a hexagonal shape or other polygonal shapes, the same functions and effects as those of the first embodiment can be obtained as a vibration isolator.
[0032]
【The invention's effect】
As described above, the cable injection type vibration isolator according to the present invention is a vibration isolator that is fitted in the gap between the fixing pipe and the cable at the free end of the fixing pipe in the fixing section for fixing the cable. The anti-vibration device includes an arcuate frame that is loosely fitted in a circumferential direction of the gap, and an end portion of the arcuate frames in a direction along the cable axial direction of the gap. It is formed by a lateral frame body to be constructed, an elastic bag member adhered to the arc-shaped frame body, and a filler that is filled in a space sealed by the elastic bag member according to the degree of the gap. Therefore, the vibration of the cable is not transmitted to the fixing unit, and it can be easily fitted in the gap between the fixing pipe and the cable, and even if the cable is eccentric, the workability is not deteriorated and the work efficiency is reduced. It has an excellent effect of shortening the work period by improving .
[0033]
The filler is filled in the space at a required pressure, and an elastic bag member that is loosely fitted in the gap and is disposed with no insertion force is inflated, so that a vibration isolator is provided in the gap between the fixing pipe and the cable. Since it is closely fitted, it is possible to flexibly cope with the eccentricity of the cable.
[0034]
A fixing member through-hole penetrating to both ends along the axial direction is formed in the side frame, and a fixing support member is provided at an opening of a free end of the fixing pipe. Since the fixing member is inserted into the through hole and one end portion of the fixing member is fixed to the fixing support member, and the vibration isolator is positioned, the vibration isolator is displaced due to the vibration of the cable. There is nothing.
[0035]
Since the fixing support member and the arcuate frame disposed on the fixing support member side are provided with a through hole for mounting an injection pipe and a discharge pipe for filling the filler, in communication with each other. Also, preparation for filling work is facilitated.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view (A), (B) according to a first embodiment of a cable injection type vibration isolator according to the present invention.
FIG. 2 is a perspective view according to the first embodiment of a cable injection type vibration isolator according to the present invention.
FIG. 3 is a plan view according to the first embodiment of the cable injection-type vibration isolator according to the present invention.
FIG. 4 is a cross-sectional view of the cable injection type vibration isolator according to the first embodiment of the present invention in a state where the fixing pipe and the cable are fitted into a gap.
FIG. 5 is a partial cross-sectional view of the cable injection type vibration isolator according to the first embodiment of the present invention in a state in which the fixing pipe and the cable are fitted in a gap in a loosely fitted state.
6 is a view taken along line AA in FIG.
FIG. 7 is an explanatory view showing a state where a filler is filled in the cable injection type vibration isolator according to the present invention.
FIG. 8 is a partial cross-sectional view of the cable injection type vibration isolator according to the first embodiment of the present invention after being filled with a filler.
FIG. 9 is a cross-sectional view taken along line BB in FIG.
FIG. 10 is a cross-sectional view of the cable injection type vibration isolator according to the second embodiment of the present invention in a state in which the fixing pipe and the cable are fitted in a gap in a loosely fitted state.
FIG. 11 is a cross-sectional view of the cable injection type vibration isolator according to the second embodiment of the present invention as viewed from the outside of the fixing pipe in a state where the fixing pipe and the cable are fitted in a gap (A). FIG. 4B is a partial cross-sectional view (B) after filling with the filler.
FIG. 12 is a cross-sectional view of the cable injection type vibration isolator according to the third embodiment of the present invention in a state in which the fixing pipe and the cable are fitted into the gap in a loosely fitted state.
FIG. 13 is a cross-sectional view of the third embodiment of the cable injection type vibration isolator according to the present invention, as viewed from the outside of the fixing pipe in a state where the fixing pipe and the cable are fitted in a gap; FIG. 4B is a partial cross-sectional view (B) after filling with the filler.
FIG. 14 is a cross-sectional view of the cable injection type vibration isolator according to the fourth embodiment of the present invention in a state in which the fixing pipe and the cable are loosely fitted into the gap.
FIG. 15 is a cross-sectional view of the fourth embodiment of the cable injection-type vibration isolator according to the present invention as seen from the outside of the fixing pipe in a state where the fixing pipe and the cable are fitted in a gap; FIG. 4B is a partial cross-sectional view (B) after filling with the filler.
FIG. 16 is an explanatory diagram of a use state of a vibration isolator according to a conventional example.
[Explanation of symbols]
1 cable type vibration isolator, 2 arc frame,
2a through-hole, 2b through-hole for injection,
2c through-hole for exhaust, 2d, 2e, 2f arcuate frame,
3 side frame, 4 injection pipe,
5 discharge pipe, 6 elastic bag member,
7 Fixing plate, 8 All screw rods,
9 nuts, 10 fixing bolts,
11 vinyl hose, 12 injection device,
12a resin container, 12b air compressor,
13 vinyl hose, 14 main girder,
15 fixing pipe, 16 cable,
17 bag member, 18 gap,
19 Filler.

Claims (4)

ケーブルを定着させる定着部における定着管の自由端部で、当該定着管とケーブルとの隙間に嵌装される防振装置であって、
前記防振装置は、前記隙間の周方向に遊嵌状態で配設される弧状枠体と、前記隙間のケーブル軸心方向に沿った方向において前記両弧状枠体の端部間に架設される側方枠体と、前記弧状枠体に貼着される弾性袋部材と、該弾性袋部材で密封された空間内に前記隙間の程度に応じて充填される充填材とで形成されること、
を特徴とするケーブルの注入型防振装置。
A vibration isolator that is fitted in a gap between the fixing pipe and the cable at a free end of the fixing pipe in a fixing unit that fixes the cable,
The vibration isolator is installed between an arcuate frame that is loosely fitted in the circumferential direction of the gap and an end of the arcuate frame in a direction along the cable axial direction of the gap. A side frame, an elastic bag member attached to the arcuate frame, and a filler filled in a space sealed by the elastic bag member according to the degree of the gap;
An injection-type vibration isolator for cables.
充填材は空間内に所要の圧力にして充填され、隙間に遊嵌状態で無挿入力で配設される弾性袋部材を膨張させることで、定着管とケーブルとの隙間に防振装置が密着して嵌装されること、
を特徴とする請求項1に記載のケーブルの注入型防振装置。
The filler is filled with the required pressure in the space, and the vibration isolator is in close contact with the gap between the fixing tube and the cable by inflating the elastic bag member that is loosely fitted in the gap and disposed with no insertion force. To be fitted,
The cable-injection type vibration isolator according to claim 1.
側方枠体にはその軸心方向に沿って両端へ貫通した固定部材用通し孔が形成され、定着管の自由端部の開口部には固定用支持部材が設けられ、前記固定部材用通し孔に固定部材を挿通して前記固定用支持部材に該固定部材の一端部を定着させて、防振装置の位置決めがされていること、
を特徴とする請求項1または2に記載のケーブルの注入型防振装置。
The side frame is formed with fixing member through-holes penetrating to both ends along the axial direction, and a fixing support member is provided at the opening of the free end of the fixing pipe. The vibration isolator is positioned by inserting a fixing member into the hole and fixing one end of the fixing member to the fixing support member.
The injection type vibration isolator for a cable according to claim 1 or 2.
固定用支持部材と該固定用支持部材側に配置される弧状枠体とには、充填材を充填するための注入パイプと排出パイプを装着する為の貫通孔が連通させて設けられていること、
を特徴とする請求項3に記載のケーブルの注入型防振装置。
The fixing support member and the arcuate frame disposed on the fixing support member side are provided with through holes for mounting the injection pipe and the discharge pipe for filling the filler. ,
The cable-injection type vibration isolator according to claim 3.
JP2001327722A 2001-10-25 2001-10-25 Cable injection type vibration isolator Expired - Fee Related JP3836011B2 (en)

Priority Applications (1)

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JP3836011B2 true JP3836011B2 (en) 2006-10-18

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Publication number Priority date Publication date Assignee Title
DE202004008620U1 (en) * 2004-06-01 2005-10-13 Dywidag-Systems International Gmbh Formation of a corrosion-protected tension member in the region of a deflection point arranged on a support, in particular of an inclined cable on the pylon of a cable-stayed bridge
CN102409611A (en) * 2011-08-22 2012-04-11 四川省交通运输厅公路规划勘察设计研究院 Cable clamp for suspending oblique sling of suspension bridge with middle cable plane
CN108374323B (en) * 2018-04-04 2023-09-12 中铁第四勘察设计院集团有限公司 Cable tower bundling anchoring structure for arch-supporting cable-stayed bridge
CN112030745B (en) * 2020-09-11 2022-05-24 武汉市市政路桥有限公司 A bridge sleeve pipe for cable for municipal bridge engineering

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