JP4051640B2 - Orbital girder coupling cushioning mechanism - Google Patents

Orbital girder coupling cushioning mechanism Download PDF

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Publication number
JP4051640B2
JP4051640B2 JP36385397A JP36385397A JP4051640B2 JP 4051640 B2 JP4051640 B2 JP 4051640B2 JP 36385397 A JP36385397 A JP 36385397A JP 36385397 A JP36385397 A JP 36385397A JP 4051640 B2 JP4051640 B2 JP 4051640B2
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Japan
Prior art keywords
plate
track girder
shock
support
steel plate
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JP36385397A
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Japanese (ja)
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JPH11182629A (en
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慎一郎 松崎
道夫 北脇
清 福田
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Hitachi Ltd
Mutsubushi Rubber Co Ltd
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Hitachi Ltd
Mutsubushi Rubber Co Ltd
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Description

【0001】
【発明の属する技術分野】
本発明は衝撃緩衝体および軌道桁連結部緩衝機構に係り、1000 kgf/cm2 を超えるような高い荷重条件において適切な緩衝作用をなし、構造物の損傷を防止することのできる衝撃緩衝体を提供し、またモノレールその他における軌道桁連結部緩衝機構を得しめて強大な地震発生時の如きにおいても被害損傷を受けることの少い交通機関その他の設備を提供しようとするものである。
【0002】
【従来の技術】
固定部と可動部の間において形成された間隙部の如きにおいて、衝撃を緩和するために前記間隙部に緩衝体を介装ないし充填することが行われており、このような緩衝体としてはゴム質その他の弾性材を用いることが一般的であるが、場合によってはこれに剛性部体を併用したものが採用されている。
【0003】
また建設用地などの関係からして今日において市街地でも重要な交通機関となりつつあるモノレールその他の交通機関においては図11に示す如く支柱20を配設すると共に軌道桁21を設けて適宜に底面を凹入部9とした車輌10を走行させることが行われている。即ちモノレールの場合においては上記のような軌道桁21に対し、跨座式などのような車輌10を走行せしめ、即ち車体台車29は軌道桁21の上面に走行輪26で接合すると共に軌道桁21の側面に対し案内輪27、28で挟みつけた状態を形成して軌道桁21上を走行することが行われている。
【0004】
然して、上記したような車輌走行のための軌道桁とその支柱との連結取付けについては車輌および軌道桁による水平および鉛直荷重を確実に支柱へ伝達する機能と軌道施工ないし補修時の精度保証および保守機能を必要とし、即ち上沓上のアンカー鉄筋により軌道桁と剛体状に結合し、ピンやローラによって下沓と連結する。また支柱梁天端および梁内部にベースプレートとアンカーケースを設けて支柱と一体化し、更に下沓とアンカーケース内のアンカーボルトによって上下側および横方向の荷重伝達を確実化すると共に桁材などの製造時や施工時における誤差を吸収し、更には軌道の通りなどを修正してから下沓切欠部とダボ本体との隙間にくさびなどの傾斜接合面を利用した部材を打込んで溶接固定することが行われている。
【0005】
【発明が解決しようとする課題】
前記したような固定部と可動部との間に形成された間隙部などに対する衝撃緩和のための緩衝材は一般的な作用力による衝撃時においては略満足し得る緩衝作用が得られるとしても500 kgf/cm2 を超え、あるいは1000 kgf/cm2 を超えるような強大な衝撃力が作用するような条件下においては前記緩衝材の変形や破損ないし分断などが発生し、所期するような緩衝目的を達し得ない。
【0006】
従ってゴム質などの緩衝材に対し鋼板その他の金属板を積層併用して前記緩衝材の強度を高めるようなことも行われているが、上記したように500 kgf/cm2 を超え、特に800〜1000 kgf/cm2 を超えるような大きな衝撃力が作用した場合においては積層された中間の金属板またはゴム質緩衝板が側方に弾き出され、所期する緩衝目的を達し得ないことが確認される。
【0007】
このことは上記したようなモノレールなどの支柱上における軌道桁連結部の緩衝材においてはより明確に顕われ、例えば兵庫県南部地震において上記したような下沓切欠部に嵌合したダボ18が図10に示すようにダボ本体19側に欠け込んで大きく欠損しダボ本体19より脱離し、それによって前記した軌道桁21も支柱20上における支持状態から脱落する事故が各所において発生している。
【0008】
即ちこのような破損原因について検討すると、前記ダボ本体19およびダボ18は鋳鋼品としてSCW480によって成形されたもので、このものの規格値を満足するものであって、地震当時の気温条件0℃における静的破壊強度は120tfであり、塑性変形後脆性破壊が生じたもので、せん断応力に換算すると1330 kgf/cm2 となり、せん断破壊応力3140 kgf/cm2 と比較して小さい。然して気温0℃における動的破壊靱性値は常温23℃における静的破壊靱性値と比較すると略3分の1に低下することが知られ、図10のようにダボ18とダボ本体19の境界部分に集中的な応力が作用し、またその繰返しによって亀裂が発生してせん断破壊したものと考えられ、このようなことから駅舎などの固有振動数の異る構造体と隣接した部分の軌道桁支承部分に被害が集中発生しているが、何れにしてもこのような破壊を阻止することが軌道桁を安定化し、交通機関安全上強く望まれる。
【0009】
【課題を解決するための手段】
本発明は上記したような従来技術における課題を解消することについて検討を重ね、ゴム質板状体と鋼などの強靱性金属質板状体とを用い特定の構成関係を採用することによって有効に解決することに成功したものであって、以下の如くである。
【0010】
(1) ゴム質板状体を鋼製板状体に接着した単位体を重合すると共にベース部体に係止して組付けたことを特徴とする衝撃緩衝体。
【0011】
(2) 両側に支持部を対設したベース部材に対し両側に前記支持部と係合する係止部を設けた複数個の鋼製板状体を有し、該鋼製板状体の中間部にゴム質板状体を取付け、前記鋼製板状体とゴム質板状体とが交互に位置するように積層せしめたことを特徴とする衝撃緩衝体。
【0012】
(3) 下沓の中央部に形成された開口部に支持部体上のベースプレート中央部における係止突部を受入れ、該係止突部と下沓開口部との間に前記(1)項または(2)項の何れか1つに記載した衝撃緩衝体を対向設定したことを特徴とする軌道桁連結部衝撃機構。
【0013】
(4) 支持部体が軌道桁を支持する支柱であり、係止突部と下沓開口部との間に請求項1または2の何れか1つに記載の衝撃緩衝体と楔型緩衝材とをそれぞれ対向設定し、しかも前記係止突部との間に断面的に凹凸構造を形成した緩衝材を有する間隙調整材を介装して組付けたことを特徴とする前記(3)項に記載の軌道桁連結部緩衝機構。
【0014】
【発明の実施の形態】
上記したような本発明によるものの具体的な実施態様を添附図面に示すものについて説明すると、本発明においては図1と図2に示すような緩衝単位体を提案するものであって、ゴム質板状体1を鋼製板状体2の中央部に接着6した単位体を用い、該単位体における鋼製板状体2の両側には係合部3、3を対設したものである。
【0015】
上記した図1、図2に示すような単位体は本発明において図3に示すようなベース部材4と結合して緩衝セットとされる。即ちベース部材4の両側には上記したような係合部3、3に係脱される支持部5、5が対設され、該支持部5、5に前記単位体の鋼製板状体2における係合部3、3を嵌合し、鋼製板状体2とゴム質板状体1とが交互に積層されるようにしたものである。
【0016】
前記したゴム質板状体1と鋼製板状体2の厚さについてはゴム質板状体1が鋼製板状体2より大であるが、図3のように多層を重合して形成された緩衝機構としては適宜にそれぞれの板状1、2の厚さの異ったものを採用することが好ましく、例えばベース部材4に近いものはゴム質板状体1および鋼製板状体2の何れもが厚目のものとし、図3における上部側のものは比較的薄いものとする。即ち衝撃を直接に受ける部分が薄層の緩衝作用に優れたものとなることは明かである。
【0017】
上記したような本発明による緩衝体が具体的にモノレールなどの軌道桁連結部に採用される好ましい態様の1つについては図4以下に示す如くである。即ち軌道桁として代表的なモノレール走行用の軌道桁の場合は図11に示す如くであって、走行軌道桁21に対して跨座式車輌10が走行するようにされ、軌道桁21上を走行車輪26で走行し、また軌道桁21の側面に対しては接合輪27、28が接合して回転駆動されることにより走行が図られるが、このような軌道桁21は支柱20上に支持され、また連結される。
【0018】
即ち支柱20上においては軌道桁21、21の各端部が衝き合わされた状態で設定され、このように衝き合わせ状態に対設された軌道桁21、21の一方は固定支承によってセットされ、また他方は可動支承によって支承されることは公知の如くであって、つまり外部温度条件による軌道桁21の伸縮は支柱20上において対向設定された一方の可動支承によって許容されるもので、具体的な構成関係の1例は可動支承については図8に示す如くである。即ちアンカーボルト15が内部に設けられた複数個のアンカーケース14の配設されたベースプレート16が前記したような支柱20に設けられ、該ベースプレート16上に下沓23が取付けられ、しかも該下沓23に対しては上沓22が連結されている。
【0019】
上記したような図8の支承構造は前記したような車輌10および軌道桁21による水平および鉛直方向荷重を支柱20に伝達し、軌道施工時および補修時の精度および保守機能を果すもので、上沓22上のアンカー鉄筋26で前記軌道桁21と強固に連結し、また下沓23とはローラ17によって連結しているが、前述した支柱20に対してはベースプレート16およびアンカーケース14によって連結一体化されており、アンカーボルト15によって上下方向および左右方向の荷重伝達を確実としている。然してこのような条件下で上述した軌道桁21製作時および支柱20施工時の誤差を吸収し、また軌道としてのならしやなじみを図った後において軌道の通りを再度修正して安定した取付関係を完成しているのがベースプレート16の中央部に突設されたダボと称される突設部18を下沓23の開口部13に嵌装し、該突出部18と下沓開口部13との隙間に対し、本発明においては図4に示すように前記した図3のような本発明による衝撃緩衝体11と傾斜を対向して接合させた複合楔形緩衝体12とをそれぞれ対向させ介装設定するようにした。
【0020】
なお上記したような緩衝体11の前記開口部13中設定に当っては支持部5として図5に示したような部体を採用し、また別に図6に示すような断面鋸歯状をなした填隙部材7の如きを用いてそのセット状態を安定化することが好ましい。図7に示したような填隙部材7はその断面鋸歯状部分8が弾力復元性部材によって形成され、これを上記した下沓23の開口部13との間に残る間隙に対し平易に挿入設定され、衝撃時において適切に変形して安定な取付状態を形成し得る。
【0021】
前述したような本発明によるものについて、図4に示したような衝撃緩衝体として3mm厚のSUS304鋼板を長さ150mmで高さ95mmとして切取り、該鋼板2の両側に高さが41mmで深さが20mmの係合部3を対設し、該鋼板2の中央部に幅90mmで高さが95mmであり、厚さが3.5mmの弾性ゴム板1を接着したものを4層としてベース部材4に組付け、前記係合部3、3で係止させたものを準備し、該緩衝体を加圧した場合の荷重変位関係を測定した結果は図7に示す如くであった。
【0022】
即ち、この図7による荷重変位関係は100tの荷重で6.5mmの変位を生じ、従ってこの場合のゴム板1におけるエネルギー吸収は1/3×100×6.5=216.7tf・mm程度と求められ、従来において採用されている図9に示したような複合楔形緩衝体12のみを係合突部24の前後左右に対設した場合のエネルギー吸収は100×0.7=70tf・mm程度に比較すると3倍以上のエネルギー吸収性を有することが確認され、その吸収特性が大幅に改善向上し得ることが確認された。
【0023】
上記したような本発明によるときは、複数のゴム質板状体と鋼製板状体とを交互に重合すると共にベース部体に係止して組付けたことによりゴム質板状体の好ましいエネルギー吸収作用を強大な衝撃作用条件下においても有効に確保し、即ち強大な衝撃力作用時においても的確に所定の組付け状態を維持して衝撃吸収特性を大幅に向上せしめる。
【0024】
また本発明によるものは、両側に支持部を対設したベース部材に対し両側に前記支持部と係合する係止部を設けた複数個の鋼製板状体を有し、該鋼製板状体の中間部にゴム質板状体を取付け、前記鋼製板状体とゴム質板状体とが交互に位置するように積層せしめたことにより製作および取扱いの容易な機構構成により前記したような衝撃吸収特性の大幅向上を有効に達成する。
【0025】
更に本発明では、下沓の中央部に形成された開口部に支持部体上のベースプレート中央部における係止突部を受入れ、該係止突部と下沓開口部との間に前記したような何れか1つに記載した衝撃緩衝体を対向設定したことによりモノレールその他の軌道桁連結部における衝撃吸収を有効に図り、従って強度な地震発生時などにおいても軌道桁連結部における損壊を的確に防止せしめて安定な交通手段を維持せしめ得る。
【0026】
また本発明では、支持部体が軌道桁を支持する支柱であり、係止突部と下口開口部との間に前記したような何れか1つに記載の衝撃緩衝体と楔型衝撃材とをそれぞれ対向設定し、しかも前記係止突部との間に断面的に凹凸構造を形成した緩衝材を有する間隙調整材を介装して組付けたことにより前記したようなモノレールなどの軌道桁に関して組付け操作が容易で、安定且つ的確な接続部を形成せしめる。
【0027】
【発明の効果】
以上説明したような本発明によるときは強力な衝撃力条件下においてもゴム質弾性材による好ましい緩衝作用を有効且つ的確に維持せしめることができ、またそれによって鉄道やモノレールの如き設備における軌道桁の損壊を強大な地震などの発生時などにおいても適宜に防止して耐用性に優れた交通設備を確保せしめるなどの効果を有しており、工業的にその効果の大きい発明である。
【図面の簡単な説明】
【図1】本発明による衝撃緩衝単位体の1例に示した平面図である。
【図2】前記した図1のものの断面図である。
【図3】図1、図2に示した単位体の複数個で合成された本発明の合成緩衝体の1例を示した側面図である。
【図4】軌道桁連結部に対する緩衝装置の平面図である。
【図5】図4に示したものにおけるベース部材についての平面図である。
【図6】填隙部材についての正面図と断面図を併せて示した説明図である。
【図7】本発明による衝撃緩衝体の1例における荷重、変位関係についての測定結果を示した図表である。
【図8】軌道桁の支柱に対する連結取付部分の1例についての構成関係を示した斜面図である。
【図9】従来の支柱と軌道桁の連結要部として下沓開口部に対するベースプレートダボとの間の緩衝構造を示した部分的斜面図である。
【図10】強大地震によるダボ本体の破損状態を示した説明図である。
【図11】跨座式モノレールについての部分的な送行構成を示した斜面図である。
【図12】その固定支承部分についての全般的な斜面図である。
【図13】そのタボ本体に対する設定関係を示した部分的な斜面図である。
【符号の説明】
1 ゴム質板状体
2 鋼製板状体
3 係合部
4 ベース部材
5 支持部
6 接着部
7 填隙部材
8 断面鋸歯状部分
9 凹入部
10 車輌
11 本発明による緩衝体
12 複合楔形緩衝体
13 開口部(下沓23の)
14 アンカーケース
15 アンカーボルト
16 ベースプレート
17 ローラ
18 突出部(ダボ)
19 ダボ本体
20 支柱
21 軌道桁
22 上沓
23 下沓
24 係合突部(ダボ)
25 ベース板
26 アンカー鉄筋
27 接合輪
28 接合輪
29 車体台車
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an impact buffer and an orbital girder coupling cushioning mechanism, and provides an impact buffer that can appropriately damage under a high load condition exceeding 1000 kgf / cm 2 and prevent damage to a structure. It is also intended to provide transportation facilities and other facilities that are less likely to be damaged or damaged even in the event of a strong earthquake by obtaining a track girder joint buffer mechanism in monorails and others.
[0002]
[Prior art]
In order to alleviate the impact, such as a gap formed between the fixed part and the movable part, a buffer is inserted or filled in the gap, and as such a buffer, rubber is used. Generally, an elastic material or other elastic material is used, but in some cases, a material using a rigid part in combination with the elastic material is used.
[0003]
Further, in the monorail and other transportation systems that are becoming an important transportation system in the city today due to the construction site and the like, as shown in FIG. 11, a support column 20 and a track girder 21 are provided, and the bottom surface is appropriately recessed. The vehicle 10 that is the entrance 9 is run. That is, in the case of a monorail, a vehicle 10 such as a straddle type is run on the track girder 21 as described above, that is, the vehicle body carriage 29 is joined to the upper surface of the track girder 21 by the traveling wheel 26 and the track girder 21. It is carried out on the track girder 21 by forming a state of being sandwiched by guide wheels 27 and 28 with respect to the side surface of the track.
[0004]
However, with regard to the connecting attachment between the track girder and its support for vehicle traveling as described above, the function of reliably transmitting the horizontal and vertical loads by the vehicle and the track girder to the support and the accuracy guarantee and maintenance at the time of track construction or repair are provided. It requires a function, that is, it is rigidly connected to the track girder by an anchor bar on the upper arm and connected to the lower arm by a pin or roller. In addition, a base plate and an anchor case are provided at the top of the column beam and inside the beam to integrate it with the column. Further, load transmission in the vertical and lateral directions is ensured by the lower rod and anchor bolts in the anchor case, and at the time of manufacturing of girders, etc. In order to absorb errors during construction and to correct the path of the track, a member using a slanted joint surface such as a wedge is inserted into the gap between the lower notch and the dowel body and fixed by welding. It has been broken.
[0005]
[Problems to be solved by the invention]
Even if the shock-absorbing material for buffering the impact on the gap formed between the fixed part and the movable part as described above can provide a substantially satisfactory shock-absorbing action at the time of impact by a general acting force, it is 500. exceed kgf / cm 2, or 1000 deformation or damage to cutting of the cushioning material is generated strong impact force exceeding kgf / cm 2 is in conditions such that action, intended to as a buffer The purpose cannot be achieved.
[0006]
Therefore, it is also practiced to increase the strength of the cushioning material by laminating and combining a steel plate or other metal plate with a cushioning material such as rubber. However, as described above, it exceeds 500 kgf / cm 2 , particularly 800 When a large impact force exceeding ~ 1000 kgf / cm 2 is applied, it is confirmed that the laminated intermediate metal plate or rubber buffer plate is ejected to the side, and the intended buffer purpose cannot be achieved. Is done.
[0007]
This appears more clearly in the cushioning material of the orbital girder connecting portion on the support such as the monorail as described above. For example, the dowel 18 fitted in the lower notch portion as described above in the Hyogoken-Nanbu Earthquake is shown in FIG. As shown in FIG. 10, there are accidents in various places where the dowel body 19 is cut into the dowel body 19 and is largely broken and detached from the dowel body 19, thereby causing the above-mentioned track girder 21 to drop out of the support state on the column 20.
[0008]
That is, when the cause of the damage is examined, the dowel body 19 and the dowel 18 are formed by SCW480 as cast steel products, satisfying the standard value of this, and the static conditions under the temperature condition of 0 ° C. at the time of the earthquake. The mechanical fracture strength is 120 tf, and a brittle fracture occurs after plastic deformation, which is 1330 kgf / cm 2 in terms of shear stress, which is smaller than the shear fracture stress of 3140 kgf / cm 2 . However, it is known that the dynamic fracture toughness value at a temperature of 0 ° C. is reduced to about one third compared with the static fracture toughness value at a normal temperature of 23 ° C., and the boundary portion between the dowel 18 and the dowel body 19 as shown in FIG. It is considered that a concentrated stress acts on the bridge, and cracks are generated due to repetition of the stress, resulting in shear failure. Although damage is concentrated in the area, it is strongly desired to prevent such destruction anyway in order to stabilize the track girder and to ensure transportation safety.
[0009]
[Means for Solving the Problems]
The present invention has been studied for solving the problems in the prior art as described above, and is effective by adopting a specific structural relationship using a rubber plate and a tough metal plate such as steel. The solution was successful as follows.
[0010]
(1) An impact buffering body characterized in that a unit body in which a rubber plate is bonded to a steel plate is polymerized and locked to a base body and assembled.
[0011]
(2) It has a plurality of steel plate-like bodies provided with locking portions that engage with the support portions on both sides with respect to the base member provided with support portions on both sides, and the middle of the steel plate-like bodies An impact buffer, wherein a rubber plate is attached to a portion and the steel plate and the rubber plate are stacked alternately.
[0012]
(3) The locking protrusion at the center portion of the base plate on the support body is received in the opening formed in the central portion of the lower collar, and the item (1) is provided between the locking protrusion and the lower flange opening. Alternatively, an orbital girder connecting portion impact mechanism characterized in that the impact buffer described in any one of (2) is set oppositely.
[0013]
(4) The shock absorber and the wedge-shaped cushioning material according to any one of claims 1 and 2, wherein the support body is a support column that supports the track girder, and the locking projection and the lower arm opening. And (3), wherein a gap adjusting material having a cushioning material in which a concavo-convex structure is formed in cross section is interposed between the engaging protrusion and the engaging protrusion. Orbital girder coupling part buffer mechanism described in 1.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
A specific embodiment of the present invention as described above will be described with reference to the accompanying drawings. In the present invention, a buffer unit as shown in FIGS. 1 and 2 is proposed. A unit body in which the body 1 is bonded 6 to the central portion of the steel plate-like body 2 is used, and engaging portions 3 and 3 are provided on both sides of the steel plate-like body 2 in the unit body.
[0015]
1 and 2 are combined with a base member 4 as shown in FIG. 3 to form a shock absorbing set. That is, on both sides of the base member 4, support portions 5 and 5 that are engaged with and disengaged from the engagement portions 3 and 3 as described above are provided, and the steel plate-like body 2 of the unit body is provided on the support portions 5 and 5. Are engaged with each other so that the steel plate-like body 2 and the rubber-like plate-like body 1 are alternately laminated.
[0016]
Regarding the thickness of the rubber plate 1 and the steel plate 2 described above, the rubber plate 1 is larger than the steel plate 2 but is formed by superposing multiple layers as shown in FIG. As the buffering mechanism, it is preferable to appropriately adopt the plates 1 and 2 having different thicknesses. For example, those close to the base member 4 are the rubber plate 1 and the steel plate. 2 is thick, and the upper side in FIG. 3 is relatively thin. In other words, it is clear that the portion that receives impact directly becomes excellent in the buffering action of the thin layer.
[0017]
One preferred embodiment in which the buffer according to the present invention as described above is specifically employed in a track girder connecting portion such as a monorail is as shown in FIG. That is, in the case of a track girder for monorail travel that is a typical track girder, as shown in FIG. 11, the straddled vehicle 10 travels with respect to the travel track girder 21 and travels on the track girder 21. The vehicle travels by the wheels 26 and is driven by rotating the joint wheels 27 and 28 joined to the side surfaces of the track girder 21. The track girder 21 is supported on the support column 20. , Also linked.
[0018]
In other words, on the column 20, the end portions of the track girders 21 and 21 are set in a state where they collide with each other, and one of the track girders 21 and 21 arranged in such a manner as to face each other is set by a fixed support. It is well known that the other is supported by a movable bearing, that is, the expansion and contraction of the track girder 21 due to the external temperature condition is permitted by one movable bearing set oppositely on the support column 20. One example of the structural relationship is as shown in FIG. 8 for the movable bearing. That is, a base plate 16 in which a plurality of anchor cases 14 with anchor bolts 15 provided therein is disposed is provided on the support column 20 as described above, and a lower rod 23 is mounted on the base plate 16. An upper collar 22 is connected to 23.
[0019]
The above-described support structure of FIG. 8 transmits the horizontal and vertical loads by the vehicle 10 and the track girder 21 as described above to the support column 20, and performs accuracy and maintenance functions at the time of track construction and repair. It is firmly connected to the track girder 21 by an anchor reinforcing bar 26 on the rod 22 and is connected to the lower rod 23 by a roller 17. However, the column 20 is connected and integrated by a base plate 16 and an anchor case 14. The anchor bolts 15 ensure load transmission in the vertical direction and the horizontal direction. Under such conditions, however, the above-described errors in the production of the track girder 21 and the construction of the support column 20 are absorbed. Is completed by fitting a projecting portion 18 called a dowel projecting at the center of the base plate 16 into the opening 13 of the lower rod 23, and the projecting portion 18 and the lower rod opening 13. In the present invention, as shown in FIG. 4, the impact buffer 11 according to the present invention and the composite wedge-shaped buffer 12 joined to face each other are disposed so as to face each other. I set it.
[0020]
In setting the buffer body 11 in the opening 13 as described above, a support body 5 as shown in FIG. 5 is adopted, and a sectional sawtooth shape as shown in FIG. It is preferable to stabilize the set state using a gap filling member 7 or the like. The gap filling member 7 as shown in FIG. 7 has a sawtooth section 8 in section formed by an elastic restoring member, and this is set to be easily inserted into the gap remaining between the opening 13 of the lower collar 23 described above. And can be appropriately deformed at the time of impact to form a stable mounting state.
[0021]
As for the shock absorber according to the present invention as described above, a SUS304 steel plate having a thickness of 3 mm is cut as a shock buffer as shown in FIG. 4 to a length of 150 mm and a height of 95 mm, and the height is 41 mm on both sides of the steel plate 2. Is a base member having four layers, each having an engagement portion 3 having a thickness of 20 mm, and an elastic rubber plate 1 having a width of 90 mm, a height of 95 mm, and a thickness of 3.5 mm bonded to the central portion of the steel plate 2. FIG. 7 shows the result of measurement of the load displacement relationship when the shock absorber is pressurized by preparing the one assembled to 4 and latched by the engaging portions 3 and 3.
[0022]
That is, the load-displacement relationship according to FIG. 7 causes a displacement of 6.5 mm at a load of 100 t. Therefore, the energy absorption in the rubber plate 1 in this case is about 1/3 × 100 × 6.5 = 216.7 tf · mm. The energy absorption in the case where only the composite wedge-shaped buffer body 12 as shown in FIG. 9 that is required and is used in the conventional manner is provided on the front, rear, left, and right of the engaging protrusion 24 is about 100 × 0.7 = 70 tf · mm. Compared to the above, it has been confirmed that it has an energy absorptivity of 3 times or more, and it has been confirmed that the absorption characteristics can be improved and improved significantly.
[0023]
When according to the present invention as described above, a plurality of rubber plate-like bodies and steel plate-like bodies are alternately polymerized and are preferably locked and assembled to the base body to form a rubber plate-like body. The energy absorbing action is effectively ensured even under a strong impact action condition, that is, a predetermined assembly state is accurately maintained even during a strong impact action action, and the shock absorption characteristics are greatly improved.
[0024]
According to the present invention, there is provided a steel plate having a plurality of steel plate-like bodies provided on both sides with a locking portion that engages with the support portion with respect to a base member provided with support portions on both sides. A rubber plate is attached to the middle of the plate, and the steel plate and the rubber plate are laminated so that they are alternately positioned. Such a significant improvement in shock absorption characteristics is achieved effectively.
[0025]
Furthermore, in the present invention, the locking projection at the center portion of the base plate on the support body is received in the opening formed in the central portion of the lower collar, and as described above between the locking projection and the lower collar opening. The shock absorbers described in any one of these are effectively set so that shock absorption at the monorail and other track girder joints is effectively achieved, so that damage to the track girder joints can be accurately performed even in the event of a strong earthquake. It can prevent and maintain stable transportation.
[0026]
Further, in the present invention, the support body is a support column that supports the track girder, and the shock absorber and the wedge-type impact material according to any one of the above described between the locking projection and the lower opening. And a track such as a monorail as described above by assembling with a gap adjusting material having a cushioning material having a concavo-convex structure formed in cross section with the locking projection. Assembling operation is easy with respect to the girders, and a stable and accurate connection can be formed.
[0027]
【The invention's effect】
According to the present invention as described above, it is possible to effectively and accurately maintain a preferable buffering action by the rubber elastic material even under a strong impact force condition, and thereby, the rail girder in equipment such as railways and monorails can be maintained. This invention has the effect of preventing damages as appropriate even in the event of a major earthquake, etc., and ensuring traffic facilities with excellent durability, and is an industrially highly effective invention.
[Brief description of the drawings]
FIG. 1 is a plan view showing an example of an impact buffering unit according to the present invention.
FIG. 2 is a cross-sectional view of FIG. 1 described above.
3 is a side view showing an example of the synthetic buffer of the present invention synthesized with a plurality of unit bodies shown in FIGS. 1 and 2. FIG.
FIG. 4 is a plan view of a shock absorber with respect to a track girder connecting portion.
FIG. 5 is a plan view of a base member shown in FIG.
FIG. 6 is an explanatory view showing both a front view and a sectional view of the gap filling member.
FIG. 7 is a chart showing measurement results of load and displacement relationships in an example of an impact buffer according to the present invention.
FIG. 8 is a perspective view showing the structural relationship of an example of a connecting attachment portion for a column of a track girder.
FIG. 9 is a partial perspective view showing a buffer structure between a conventional support column and a base plate dowel with respect to a lower eyelid opening as a connecting main part of a track girder.
FIG. 10 is an explanatory view showing a damaged state of the dowel body due to a strong earthquake.
FIG. 11 is a perspective view showing a partial transmission configuration for a straddle-type monorail.
FIG. 12 is a general perspective view of the fixed support portion.
FIG. 13 is a partial perspective view showing the setting relationship with respect to the main body.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rubber | gum-like plate-shaped body 2 Steel plate-shaped body 3 Engagement part 4 Base member 5 Support part 6 Adhesion part 7 Gap gap member 8 Cross-section serrated part 9 Recessed part 10 Vehicle 11 Buffer body 12 by this invention Composite wedge-shaped buffer body 13 Opening (of lower arm 23)
14 Anchor case 15 Anchor bolt 16 Base plate 17 Roller 18 Projection (dwell)
19 Dowel body 20 Post 21 Track girder 22 Upper collar 23 Lower collar 24 Engaging protrusion (Dowel)
25 Base Plate 26 Anchor Reinforcement 27 Joint Wheel 28 Joint Wheel 29 Body Bogie

Claims (2)

下沓の中央部に形成された開口部に支持部体上のベースプレート中央部における係止突部を受入れ、該係止突部と下沓開口部との間に第1衝撃緩衝体及び第2衝撃緩衝体のうち何れか一方を対向設定しており、
第1衝撃緩衝体は、複数のゴム質板状体と鋼製板状体とを交互に重合すると共にベース部体に係止して組付けて構成され、
第2衝撃緩衝体は、両側に支持部を対設したベース部材に対し両側に前記支持部と係合する係止部を設けた複数個の鋼製板状体を有し、該鋼製板状体の中間部にゴム質板状体を取付け、前記鋼製板状体とゴム質板状体とが接着せしめられると共に交互に位置するように積層せしめて構成されること
特徴とする軌道桁連結部衝撃機構。
The opening formed in the center part of the lower collar receives the locking protrusion at the center of the base plate on the support body, and the first shock absorber and the second between the locking protrusion and the lower flange opening . Either one of the shock absorbers is set oppositely ,
The first shock absorber is configured by alternately superposing a plurality of rubber plate-like bodies and steel plate-like bodies and engaging and assembling the base plate.
The second shock-absorbing body has a plurality of steel plate-like bodies provided with locking portions that engage with the support portions on both sides with respect to a base member provided with support portions on both sides. A rubber plate is attached to the middle portion of the plate, and the steel plate and the rubber plate are bonded and laminated so that they are alternately positioned ;
Track girder connecting part impact mechanism according to claim.
支持部体が軌道桁を支持する支柱であり、係止突部と下口開口部との間に前記第1衝撃緩衝体及び第2衝撃緩衝体のうち何れか一方と楔型緩衝材とをそれぞれ対向設定しており、しかも前記係止突部との間に断面的に凹凸構造を形成した緩衝材を有する間隙調整材を介装して組付けたこと
特徴とする請求項に記載の軌道桁連結部緩衝機構。
The support body is a support column that supports the track girder, and either the first shock buffer body or the second shock buffer body and the wedge-type buffer material are interposed between the locking projection and the lower opening. Each of which is set to face each other , and a gap adjusting material having a cushioning material in which a concavo-convex structure is formed in cross section with the locking projection, is assembled and assembled ,
Track girder connection portion buffering mechanism according to claim 1, wherein the.
JP36385397A 1997-12-18 1997-12-18 Orbital girder coupling cushioning mechanism Expired - Fee Related JP4051640B2 (en)

Priority Applications (1)

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