JP4147623B2 - Escalator mounting structure - Google Patents

Escalator mounting structure Download PDF

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Publication number
JP4147623B2
JP4147623B2 JP12775298A JP12775298A JP4147623B2 JP 4147623 B2 JP4147623 B2 JP 4147623B2 JP 12775298 A JP12775298 A JP 12775298A JP 12775298 A JP12775298 A JP 12775298A JP 4147623 B2 JP4147623 B2 JP 4147623B2
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Japan
Prior art keywords
escalator
floor
support member
floors
around
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JP12775298A
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Japanese (ja)
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JPH11322243A (en
Inventor
宏 岡田
道照 正治
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Obayashi Corp
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Obayashi Corp
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Description

【0001】
【発明の属する技術分野】
本発明は、複数の階床を有する建造物の上階床と下階床とを連絡するエスカレータの取付構造に係わり、特に両階床間に生ずる相対変位の吸収機能を備えたエスカレータの取付構造に関する。
【0002】
【従来の技術】
従来より、複数の階床を有する建造物の上階床と下階床とを連絡するものとしてエスカレータが設置されているが、図5,6に示すように当該エスカレータ3は、両階床1,2間に掛け渡されて、エスカレータフレーム14の両端に設けられた取付金具14a,14bが、両階床1,2に堀込まれて段状に凹設された支持台4,6にボルト15等で締結固定され、さらにその上側にはボルト締結部の凹部を埋めるようにモルタル16が打設され剛結合されている。なお、17は床面仕上げ材である。
【0003】
【発明が解決しようとする課題】
ところで、一般的な階高3m程度の剛構造の非免震建造物では大地震が発生すると、上階と下階とを連絡するエスカレータの取付部には1〜2cm程の相対変位が生じ、建造物が柔構造の場合には、さらに大きな相対変位が生じる。
【0004】
また、空港等の大空間構造物にあっては、エスカレータが連絡する階床が地上階と3階のように直上階ではないこともあり、このような場合には、取付階床間の高さが高くなるに従い相対変位が大きくなる。また、このような長大なエスカレータになると、当該エスカレータ自身の温度変化による熱膨張や収縮の変形も大きくなる。このため、上述のように両端を各階床にリジッドに剛接合された従来のエスカレータの取付構造では、その自重や温度変化による変形はもとより、地震などにより各階床取付部に生じる相対変位を吸収できず、過大な応力や歪みが発生して破損される恐れがあった。
【0005】
また、建造物の構造には、免震構造、非免震構造、剛構造、柔構造などがあり、近年では、既存の非免震構造の建造物上方や側方に免震構造や柔構造の建造物を増築したり、地下にある非免震構造の建造物の上方地上部に免震構造や柔構造の建造物を構築し、これら構造の異なる階床間をエスカレータで連結することも多くなっている。従って、このように連絡する階床が設けられている建造物のうち少なくとも一方が免震構造あるいは柔構造であると、揺れモードの違いにより、エスカレータを固定している階床の相対的な位置関係は、エスカレータの搬送方向に沿って一次元的に近接離間するのではなく、二次元的または三次元的に相対変位し、さらには各階床1,2にはねじれ振動も作用するから、当該相対変位は大きくなり易く、上記破損の問題がより顕著になる。なお、上記免震構造の建造物とは、下部構造体上に鉛直方向の加重負担性に優れて水平方向の変位性に富むアイソレータ等の弾性部材を介して上部構造体を支持させたものである。
【0006】
本発明は、上記課題に鑑みてなされたものであり、その目的は、建造物の上下の階床間に生じる相対変位を吸収可能で、耐震性に優れたエスカレータの取付構造を提供することにある。
【0007】
【課題を解決するための手段】
本願発明は、建造物の上階床と下階床を繋ぐエスカレータの取付構造において、該エスカレータの両端をそれぞれの階床の支持部に対して回動機構を介して結合させて取り付けると共に、該結合部の一方に、両階床支持部間に生ずるスパン変化を吸収するスライド機構を設け、前記回動機構は、鉛直軸周り、及び、前記エスカレータの長手方向と直交する水平軸周りのみに回動可能な機構であり
前記エスカレータの一端に設けられた前記回動機構は、
前記鉛直軸周りに回転可能なベアリングと、
一方の前記階床の前記支持部上に前記ベアリングを介して取り付けられた支持部材と、
前記エスカレータの一端部の取付金具に一体的に固設された結合部材を、前記支持部材に対して前記水平軸周りに回転可能に結合するピンと、を備え、
前記エスカレータの他端に設けられた前記回動機構は、
前記鉛直軸周りに回転可能なベアリングと、
他方の前記階床の前記支持部上に前記ベアリングを介して取り付けられたコ字状の支持部材と、
前記コ字状の支持部材の二つの側壁間に入り込んだ前記エスカレータの他端部の取付金具を前記エスカレータの長手方向に沿って摺動自在に支持するローラを、前記支持部材に対して前記水平軸周りに回転可能に結合するピンと、を備えることを特徴とするエスカレータの取付構造、である。
【0008】
また、前記エスカレータと両階床との取り合い部分に弾性部材を介在させたこととしてもよい。
【0009】
また、前記上階側と下階側とで建造物の構造が異なり、少なくともその一方が免震構造または柔構造であることとしてもよい。
【0012】
【発明の実施の形態】
以下に、本発明にかかるエスカレータ構造の実施形態について、図1,2,3に示す実施例により詳細に説明する。なお、同図において図5,6に示した従来例と同一の部材には同一の符号を付してある。
【0013】
図1,2,3において、1は非免震構造でなる建造物の階床、2は免震構造でなる建造物の階床である。両階床1,2は連絡可能にエスカレータ3によって連結されている。
【0014】
両階床1,2には、相手方階床のエスカレータ取付部方向に向かって段違いに張り出す支持台4,6が設けられており、両支持台4,6上には上記エスカレータ3の端部をそれぞれ支持する支持部材5,7が、鉛直軸周りに回転可能なベアリング9を介して一体的に取り付けられている。
【0015】
階床1側の支持部材5には、エスカレータ3の一端の取付金具14a下面に下方に突出して一体的に固設された結合部材3aが、ピン10を介して水平軸周りに回転可能に結合されている。また、階床2側の支持部材7先端には、ローラ12が設けられ、当該ローラ12上にエスカレータ3の他端の取付金具14bが載置されて支持されている。ローラ12は、コ字状をなす支持部材7の2つの側壁8,8間に位置し、ピン11により水平軸周りに回転自在に支持されている。また、側壁8,8の間隔は取付金具14bの幅より僅かに広く、エスカレータ3の他端側はローラ12に支持されている状態で、そのの取付金具14bが側壁8,8の間に入り込み、当該支持部材7の側壁8に対しエスカレータ搬送方向に沿って摺動自在に係合している。
【0016】
階床1及び階床2とエスカレータ3との取合い部分には相互の相対変位を許容するために所定のクリアランスが空けられており、この取り合い部分のクリアランスには、ゴム材等でなる弾性部材13が介在され、上部は床面仕上げ材17で覆われている。
【0017】
次に、図1,4により、両階床1,2の挙動と本発明によるエスカレータ3及び連結部の動きを説明する。
【0018】
通常、2つの階床1,2は図1,4(a)のように両階床から張り出した支持台4,6が段違いに対向するような位置に保たれている。ところが、大地震等により両階床1,2が揺れ、両者の振動モードの相違等により鉛直方向及び水平方向の相対位置にずれが生じた場合、各々の階床1、2の変位に追従して階床1,2とエスカレータ3との連結部分の相対位置関係にずれが生じる。
【0019】
即ち、両階床に鉛直方向への相対位置のずれが生じた場合、エスカレータ3は、その両端が両階床1,2に引っ張られ、エスカレータ3の一端の下側に一体的に設けた結合部材3aが、階床1の支持台4に固設した支持部材5のピン10により水平軸周りに回動して、当該階床1との取付角度が変わる。一方、階床2に対しては、エスカレータ3の他端は階床2の支持部材7の先端に設けられたローラ12上に載置されているから、エスカレータ3はローラ12上を、当該エスカレータ3の傾きに応じて転動して、当該階床2との取付角度が変わる。
【0020】
また、両階床に水平方向への相対位置のずれが図4(b)のように生じた場合、エスカレータ3はその両端が両階床1,2に引っ張られ、階床1に対しては、エスカレータ3の一端が階床1の支持台4に取り付けられたベアリング9により水平方向に鉛直軸周りに回動して、当該階床1との取付角度が変わる。一方、階床2に対しては、エスカレータ3の他端側取付金具14bが階床2の支持部材7の側壁8間に入り込んで通路長方向に沿って摺動自在に係合しているため、支持部材7はエスカレータ3と一体となって当該エスカレータ3の傾きに応じて鉛直軸周りに回動して、当該階床2との取付角度が変わる。
【0021】
また、これら鉛直方向及び水平方向の相対位置の変化とエスカレータの取付角度の変化に伴い両階床1,2の支持部材5,7間の間隔、即ちスパンが変動することになるが、このスパンの変動に対してはエスカレータ3の他端側取付金具14bが支持部材7の側壁8,8と摺動しつつローラ12を回転させて転動移動することにより、当該スパン変動が吸収される。
【0022】
ここで、階床1,2とエスカレータ3との取合い部分のクリアランスには、弾性部材13が介在されているので、階床1,2とエスカレータ3とのそれぞれのクリアランス変化に応じて弾性部材13が変形するため、両者の間に隙間は発生せず、またその動作に対し緩衝作用を発揮する。
【0023】
なお、上記実施例では非免震構造でなる建造物の階床1と免震構造でなる建造物の階床2とをエスカレータ3で繋ぐ場合を例示したが、本発明のエスカレータの取付構造はこれに限らず、免震構造の建造物の階床同士、あるいは非免震で剛構造の建造物の階床同士を連結するエスカレータに適用しても良く、当該エスカレータ3で繋ぐ上下階の階床は、その建造物の構造が免震構造、非免震構造、剛構造、柔構造等の如何を問わず、またそれらの任意の組み合わせに適用でき、同様の効果が得られる。
【0024】
また、階床2の支持部7は、上下の方向を入れ替えてエスカレータ3側に取り付けて、階床2の支持台6に乗せ、支持台6を支持部7の側壁8の間にはめ込むことによっても同様の効果が得られる。
【0025】
【発明の効果】
本発明によれば、耐震性に優れたエスカレータの取付構造を提供することが可能となる。
【図面の簡単な説明】
【図1】本発明に係る通路構造の概略構成を示す一実施形態の縦断面図である。
【図2】図1に示す連絡通路構造のA−A断面図である。
【図3】図1に示す連絡通路構造のB−B断面図である。
【図4】本発明の一実施形態を示す動作モデル図である。
【図5】従来のエスカレータ構造を概略的に示す縦断面図である。
【図6】従来のエスカレータの取付方法を示す縦断面図である。
【符号の説明】
1 階床(非免震構造の建造物)
2 階床(免震構造の建造物)
3 エスカレータ
4、6 支持台
5、7 支持部材
8 側壁
9 ベアリング
10、11 ピン
12 ローラ
13 弾性部材
14 エスカレータフレーム
15 ボルト
16 モルタル層
17 床仕上げ材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an escalator mounting structure that connects an upper floor and a lower floor of a building having a plurality of floors, and in particular, an escalator mounting structure having a function of absorbing relative displacement generated between both floors. About.
[0002]
[Prior art]
Conventionally, an escalator has been installed to connect an upper floor and a lower floor of a building having a plurality of floors. However, as shown in FIGS. , 2, and mounting brackets 14 a, 14 b provided at both ends of the escalator frame 14 are bolted to the support bases 4, 6 which are dug into the floors 1, 2 and recessed in a stepped manner. The mortar 16 is driven and rigidly connected so as to fill the concave portion of the bolt fastening portion. Reference numeral 17 denotes a floor finishing material.
[0003]
[Problems to be solved by the invention]
By the way, when a large earthquake occurs in a rigid non-base-isolated building with a typical floor height of about 3 m, a relative displacement of about 1 to 2 cm occurs in the attachment part of the escalator that connects the upper floor and the lower floor, When the building is a flexible structure, a larger relative displacement occurs.
[0004]
Also, in large space structures such as airports, the floor to which the escalator communicates may not be directly above the ground floor and the third floor. As the height increases, the relative displacement increases. Moreover, when it becomes such a long escalator, the deformation | transformation of the thermal expansion and shrinkage | contraction by the temperature change of the said escalator itself will also become large. For this reason, with the conventional escalator mounting structure rigidly joined to each floor at both ends as described above, it is possible to absorb the relative displacement that occurs in each floor mounting due to earthquakes, etc., as well as deformation due to its own weight and temperature changes. However, excessive stress and strain may occur and may be damaged.
[0005]
In addition, there are seismic isolation structures, non-seismic isolation structures, rigid structures, flexible structures, etc., in recent years. Buildings with seismic isolation or flexible structures above the non-base-isolated structures in the basement and connecting the different floors with escalators It is increasing. Therefore, if at least one of the buildings provided with the floors to be communicated in this way has a seismic isolation structure or a flexible structure, the relative position of the floor to which the escalator is fixed due to the difference in the shaking mode. The relationship is not one-dimensionally approaching and separating one-dimensionally along the transport direction of the escalator, but two-dimensional or three-dimensional relative displacement, and further, torsional vibration also acts on each floor 1, 2. The relative displacement tends to be large, and the above-mentioned problem of damage becomes more prominent. The above-mentioned seismic isolation structure is a structure in which the upper structure is supported on the lower structure via an elastic member such as an isolator that is excellent in load capacity in the vertical direction and rich in horizontal displacement. is there.
[0006]
This invention is made | formed in view of the said subject, The objective is to provide the attachment structure of the escalator which can absorb the relative displacement which arises between the upper and lower floors of a building, and was excellent in earthquake resistance. is there.
[0007]
[Means for Solving the Problems]
The present invention relates to an escalator mounting structure that connects an upper floor and a lower floor of a building, and attaches both ends of the escalator to a support portion of each floor via a rotation mechanism, One of the coupling portions is provided with a slide mechanism that absorbs a span change occurring between the floor support portions, and the rotation mechanism rotates only around the vertical axis and around the horizontal axis perpendicular to the longitudinal direction of the escalator. A movable mechanism ,
The rotation mechanism provided at one end of the escalator is
A bearing rotatable around the vertical axis;
A support member attached via the bearing on the support portion of one of the floors;
A coupling member integrally fixed to a mounting bracket at one end of the escalator, and a pin that is coupled to the support member so as to be rotatable around the horizontal axis,
The rotation mechanism provided at the other end of the escalator is:
A bearing rotatable around the vertical axis;
A U-shaped support member attached to the support portion of the other floor via the bearing;
A roller for slidably supporting a mounting bracket at the other end of the escalator that has entered between the two side walls of the U-shaped support member, along the longitudinal direction of the escalator; An escalator mounting structure comprising: a pin that is rotatably coupled around an axis.
[0008]
Further, an elastic member may be interposed between the escalator and both floors.
[0009]
Further, the structure of the building is different between the upper floor side and the lower floor side, and at least one of them may be a seismic isolation structure or a flexible structure.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the escalator structure according to the present invention will be described in detail with reference to the examples shown in FIGS. In the figure, the same members as those in the conventional example shown in FIGS.
[0013]
In FIGS. 1, 2 and 3, reference numeral 1 denotes a floor of a building having a non-base isolation structure, and 2 denotes a floor of a building having a base isolation structure. Both floors 1 and 2 are connected by an escalator 3 so that they can communicate with each other.
[0014]
Both floors 1 and 2 are provided with support bases 4 and 6 projecting stepwise toward the escalator mounting portion direction of the other floor, and the ends of the escalator 3 above both support bases 4 and 6. Support members 5 and 7 that respectively support are integrally attached via a bearing 9 that can rotate around a vertical axis.
[0015]
The support member 5 on the floor 1 side is coupled to a joint member 3a that protrudes downward from the lower surface of the mounting bracket 14a at one end of the escalator 3 and is integrally fixed to the support member 5 so as to be rotatable around a horizontal axis via a pin 10. Has been. In addition, a roller 12 is provided at the tip of the support member 7 on the floor 2 side, and a mounting bracket 14 b on the other end of the escalator 3 is placed on and supported on the roller 12. The roller 12 is positioned between two side walls 8 and 8 of the support member 7 having a U-shape, and is supported by a pin 11 so as to be rotatable around a horizontal axis. Further, the interval between the side walls 8 and 8 is slightly wider than the width of the mounting bracket 14 b, and the mounting bracket 14 b enters between the side walls 8 and 8 while the other end of the escalator 3 is supported by the roller 12. The side wall 8 of the support member 7 is slidably engaged along the escalator transport direction.
[0016]
A predetermined clearance is provided in the joint portion between the floor 1 and the floor 2 and the escalator 3 to allow mutual relative displacement, and an elastic member 13 made of a rubber material or the like is provided in the clearance of the joint portion. And the upper part is covered with a floor finish 17.
[0017]
Next, the behavior of the floors 1 and 2 and the movement of the escalator 3 and the connecting portion according to the present invention will be described with reference to FIGS.
[0018]
Usually, the two floors 1 and 2 are maintained at positions where the support bases 4 and 6 protruding from both floors face each other as shown in FIGS. However, if both floors 1 and 2 shake due to a large earthquake and the relative position in the vertical and horizontal directions is shifted due to the difference in vibration mode between them, the displacement of each floor 1 and 2 follows. Thus, the relative positional relationship of the connecting portion between the floors 1 and 2 and the escalator 3 is shifted.
[0019]
That is, when the relative position shift in the vertical direction occurs on both floors, both ends of the escalator 3 are pulled by both floors 1 and 2, and the joint is provided integrally below one end of the escalator 3. The member 3a is rotated around the horizontal axis by the pin 10 of the support member 5 fixed to the support base 4 of the floor 1, and the mounting angle with the floor 1 is changed. On the other hand, for the floor 2, the other end of the escalator 3 is placed on the roller 12 provided at the tip of the support member 7 of the floor 2, so the escalator 3 moves over the roller 12. It rolls according to the inclination of 3, and the attachment angle with the said floor 2 changes.
[0020]
Further, when the horizontal relative position shift occurs on both floors as shown in FIG. 4B, both ends of the escalator 3 are pulled by both floors 1 and 2, and the floor 1 is Then, one end of the escalator 3 is rotated about the vertical axis in the horizontal direction by a bearing 9 attached to the support 4 of the floor 1, and the attachment angle with the floor 1 is changed. On the other hand, because the other end side mounting bracket 14b of the escalator 3 enters between the side walls 8 of the support member 7 of the floor 2 and is slidably engaged with the floor 2 along the passage length direction. The support member 7 is integrated with the escalator 3 and is rotated around the vertical axis according to the inclination of the escalator 3, so that the mounting angle with the floor 2 is changed.
[0021]
In addition, the distance between the support members 5 and 7 of the two floors 1 and 2, that is, the span varies with the change in the relative position in the vertical direction and the horizontal direction and the change in the mounting angle of the escalator. In response to this variation, the other end-side mounting bracket 14b of the escalator 3 rolls by rotating the roller 12 while sliding with the side walls 8 and 8 of the support member 7, whereby the span variation is absorbed.
[0022]
Here, since the elastic member 13 is interposed in the clearance of the joint portion between the floors 1 and 2 and the escalator 3, the elastic member 13 according to the respective clearance changes between the floors 1 and 2 and the escalator 3. Therefore, there is no gap between them, and a buffering effect is exerted on the operation.
[0023]
In the above embodiment, the case where the floor 1 of the building having a non-base isolation structure and the floor 2 of the building having a base isolation structure are connected by the escalator 3 is illustrated, but the escalator mounting structure of the present invention is as follows. However, the present invention is not limited to this, and may be applied to escalators that connect floors of base-isolated structures or non-base-isolated rigid structures, and the upper and lower floors connected by the escalator 3. The floor can be applied to any structure such as a base-isolated structure, a non-base-isolated structure, a rigid structure, a flexible structure, or any combination thereof, and the same effect can be obtained.
[0024]
Further, the support portion 7 of the floor 2 is mounted on the support base 6 of the floor 2 by mounting the support base 7 on the escalator 3 side by changing the vertical direction, and by inserting the support base 6 between the side walls 8 of the support portion 7. The same effect can be obtained.
[0025]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the attachment structure of the escalator excellent in earthquake resistance.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of an embodiment showing a schematic configuration of a passage structure according to the present invention.
2 is a cross-sectional view taken along line AA of the communication passage structure shown in FIG. 1. FIG.
3 is a cross-sectional view taken along the line BB of the communication passage structure shown in FIG.
FIG. 4 is an operation model diagram showing an embodiment of the present invention.
FIG. 5 is a longitudinal sectional view schematically showing a conventional escalator structure.
FIG. 6 is a longitudinal sectional view showing a conventional escalator mounting method.
[Explanation of symbols]
1st floor (non-base-isolated structure)
2nd floor (base-isolated building)
3 Escalator 4, 6 Support base 5, 7 Support member 8 Side wall 9 Bearing 10, 11 Pin 12 Roller 13 Elastic member 14 Escalator frame 15 Bolt 16 Mortar layer 17 Floor finish material

Claims (3)

建造物の上階床と下階床を繋ぐエスカレータの取付構造において、該エスカレータの両端をそれぞれの階床の支持部に対して回動機構を介して結合させて取り付けると共に、該結合部の一方に、両階床支持部間に生ずるスパン変化を吸収するスライド機構を設け、
前記回動機構は、鉛直軸周り、及び、前記エスカレータの長手方向と直交する水平軸周りのみに回動可能な機構であり
前記エスカレータの一端に設けられた前記回動機構は、
前記鉛直軸周りに回転可能なベアリングと、
一方の前記階床の前記支持部上に前記ベアリングを介して取り付けられた支持部材と、
前記エスカレータの一端部の取付金具に一体的に固設された結合部材を、前記支持部材に対して前記水平軸周りに回転可能に結合するピンと、を備え、
前記エスカレータの他端に設けられた前記回動機構は、
前記鉛直軸周りに回転可能なベアリングと、
他方の前記階床の前記支持部上に前記ベアリングを介して取り付けられたコ字状の支持部材と、
前記コ字状の支持部材の二つの側壁間に入り込んだ前記エスカレータの他端部の取付金具を前記エスカレータの長手方向に沿って摺動自在に支持するローラを、前記支持部材に対して前記水平軸周りに回転可能に結合するピンと、を備えることを特徴とするエスカレータの取付構造。
In an escalator mounting structure that connects an upper floor and a lower floor of a building, both ends of the escalator are attached to a support portion of each floor via a rotation mechanism, and one of the connection portions In addition, a slide mechanism that absorbs the span change that occurs between both floor support parts is provided.
The rotation mechanism is a mechanism that can rotate only around a vertical axis and around a horizontal axis perpendicular to the longitudinal direction of the escalator ,
The rotation mechanism provided at one end of the escalator is
A bearing rotatable around the vertical axis;
A support member attached via the bearing on the support portion of one of the floors;
A coupling member integrally fixed to a mounting bracket at one end of the escalator, and a pin that is coupled to the support member so as to be rotatable around the horizontal axis,
The rotation mechanism provided at the other end of the escalator is:
A bearing rotatable around the vertical axis;
A U-shaped support member attached to the support portion of the other floor via the bearing;
A roller for slidably supporting a mounting bracket at the other end of the escalator that has entered between the two side walls of the U-shaped support member, along the longitudinal direction of the escalator; An escalator mounting structure comprising: a pin that is rotatably coupled around an axis.
前記エスカレータと両階床との取り合い部分に弾性部材を介在させたことを特徴とする請求項1に記載のエスカレータの取付構造。  The escalator mounting structure according to claim 1, wherein an elastic member is interposed between the escalator and a floor portion. 前記上階側と下階側とで建造物の構造が異なり、少なくともその一方が免震構造または柔構造であることを特徴とする請求項1又は2に記載のエスカレータの取付構造。  The escalator mounting structure according to claim 1 or 2, wherein the structure of the building is different between the upper floor side and the lower floor side, and at least one of them is a seismic isolation structure or a flexible structure.
JP12775298A 1998-05-11 1998-05-11 Escalator mounting structure Expired - Fee Related JP4147623B2 (en)

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JP2013189298A (en) * 2012-03-14 2013-09-26 Hitachi Ltd Passenger conveyor
JP6383628B2 (en) * 2014-10-14 2018-08-29 株式会社日立製作所 Passenger conveyor
JP6549880B2 (en) * 2015-04-09 2019-07-24 Ihi運搬機械株式会社 Belt conveyor support structure
JP6498999B2 (en) * 2015-04-14 2019-04-10 Ihi運搬機械株式会社 Belt conveyor support structure
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