JP3744399B2

JP3744399B2 - Passenger conveyor

Info

Publication number: JP3744399B2
Application number: JP2001292755A
Authority: JP
Inventors: 忠一斎藤; 和平小嶋
Original assignee: Hitachi Ltd
Current assignee: Hitachi Ltd
Priority date: 2001-09-26
Filing date: 2001-09-26
Publication date: 2006-02-08
Anticipated expiration: 2021-09-26
Also published as: JP2003095566A; CN1410340A; CN1236994C

Description

【０００１】
【発明の属する技術分野】
本発明はエスカレーターや電動道路を含む乗客コンベアに係り、特に、薄鋼板を波山に形成して踏面クリートとした踏板を有する乗客コンベアに関する。
【０００２】
【従来の技術】
一般に、エスカレーター等の乗客コンベアにおいて、踏段の乗客が乗る踏板は、例えば、特開２００１−８９０５７号公報に開示されているように、耐久性に優れたステンレス薄鋼板を波山に成形して、多数の凸条部と凹溝部とを交互に等間隔に平行に形成した踏面クリートを主要構成品としている。また、踏面クリートの進行方向端部の一方あるいは両方には、踏板幅方向に亘る注意体が配置され、この注意体として前記踏面クリートに連なる端部クリートが設けられている。同様に、踏面クリートの幅方向単にも注意体としての側部クリートが配置されている。これら注意体は、黄色など注意喚起効果に優れた色に着色され、ステンレス薄鋼板に比べて弾力性のある合成樹脂材で成形されている。
【０００３】
一方、上記乗客コンベアの長手方向両端部には、乗客が踏板に乗降するための乗降床が設けられており、この乗降床先端に櫛歯が設けられている。この櫛歯は刃先が前記各クリートの凹溝部に入り込み、逆に各クリートの頂部は櫛歯の根元に向かって入り込み、櫛歯と各クリートとは微小間隙を介して噛合うように配置されている。
【０００４】
【発明が解決しようとする課題】
上記構成の踏板において、前記櫛歯と踏面クリートとの噛合い部に小石などの異物が侵入した場合、踏面クリートの進行方向端部を変形させて浮き上がらせ、これが櫛歯に衝突する危険を含むとともに、その復元に多大な時間と費用を費やすので、保全上の大きな問題とされ、その解決が望まれている。
【０００５】
本発明の目的は、櫛歯に異物が侵入しても踏面クリートの浮き上がり変形を防止し得る乗客コンベアを提供することにある。
【０００６】
【課題を解決するための手段】
本発明は上記目的を達成するために、踏板が、薄鋼板を交互に折り曲げて多数の凸条部と凹溝部を有する波山に形成した踏面クリートと、この踏面クリートの裏面側に設けられるクリート補強体と、前記踏面クリートの進行方向端部に位置させた端部クリートとを備えた乗客コンベアにおいて、前記踏面クリートの進行方向端部が前記クリート補強体から浮き上がるのを阻止する手段を設けたのである。
【０００７】
上記構成によれば、櫛歯と踏面クリートの噛合い部に異物が侵入して、踏面クリートを変形させた場合でも、浮き上がりを阻止する手段によって踏面クリート端部の浮き上がりが阻止されているので、浮き上がるような変形はなくなり、その結果、踏面クリート浮き上がりによる櫛歯との衝突事故は低減でき、最悪の場合でも交換が容易な櫛歯や端部クリートのみ影響を受けるので、主体である踏面クリートの交換は回避されるので、保全性の向上を図ることができる。
【０００８】
【発明の実施の形態】
以下、本発明による第一の実施の形態を図１〜図７に基づいて説明する。乗客コンベアの一種であるエスカレーター１は、下階床（図示せず）と上階床ＵＦとに跨って設置された主枠２内に、無端状の踏段チェーン３に連結されて循環移動する複数の踏段４と、踏段４の移動方向の両側に立設され周縁に前記踏段４と同期移動する移動手摺５を案内する欄干６と、前記踏段チェーン３を主枠２の長手方向両端部で巻掛け、前記主枠２の上部水平部８では乗降床９下に軸支された鎖車７と、前記主枠２の上部水平部８内に設置され、制御装置１１の制御指令により回転するモータ１２と減速機１３とで構成され、前記鎖車７を駆動チェーン１０を介して回転駆動する駆動機１４とを備えている。尚、前記踏段４は、主枠２内に敷設された案内レール１５に案内され、主枠２の長手方向端部の乗降床９の先端に設けた櫛板１６と非接触で噛合って進行して行き、乗降床９の下側で移動方向を反転している。
【０００９】
前記踏段４の構成を詳細に説明すると、前記踏段４は、大きくは、乗客を乗せる踏面を形成する踏板１７と、踏板１７の下段側から下方に向かって曲率半径Ｒの凸曲部を有するライザ１８と、前記踏板１７とライザ１８を幅方向両端部で支持する左右一対の略三角形状の支持ブラケット１９と、この支持ブラケット１９の前端部１９Ｆに車軸２０を介して軸支される前輪２１と、前記支持ブラケット１９の後端部下側１９Ｒに車軸２２を介して軸支される後輪２３とによって構成されている。
【００１０】
そして、前記踏板１７は、ステンレス薄鋼板を交互に波山形状に折り曲げて凸状部２４Ａと凹溝部２４Ｂを等ピッチで形成し、これら凸状部２４Ａと凹溝部２４Ｂが踏段進行方向に沿うように配置した踏面クリート２４と、この踏面クリート２４の裏面側に位置して前記踏面クリート２４の凹溝部２４Ｂの底部２４Ｃと点溶接Ｓにて固設されたクリート補強体２５と、前記踏面クリート２４の前段側全幅に亘って位置して前記支持ブラケット１９に固定され、前記踏面クリート２４の凸状部２４Ａと凹溝部２４Ｂと連なる凸状部２６Ａと凹溝部２６Ｂを有する進行方向の長さＷ１の前端部クリート２６と、前記踏面クリート２４の後段側全幅に亘って位置して前記支持ブラケット１９に固定され、前記踏面クリート２４の凸状部２４Ａと凹溝部２４Ｂと連なる凸状部２７Ａと凹溝部２７Ｂを有する進行方向の長さＷ２の後端部クリート２７と、前記踏面クリート２４の幅方向両側に位置し、前記前端部クリート２６と後端部クリート２７とを含む全長に亘る長さで、前記踏面クリート２４の凸状部２４Ａと凹溝部２４Ｂと同ピッチの凸状部２８Ａ，２９Ａと凹溝部２８Ｂ，２９Ｂを有する幅Ｗ３の側部クリート２８，２９とで構成されている。
【００１１】
前記前端部クリート２６と後端部クリート２７と側部クリート２８，２９とは、踏段４の周縁に存在する隙間に靴先が挟まれるのを防止する目的から、黄色など注意喚起効果のある色に着色された注意体として機能し、しかも、仮に靴先が挟まれた場合、靴を引き抜き易くするために、弾性力を有するポリカーボネイト樹脂等の合成樹脂材で形成されており、前記クリート補強体２５あるいは前記支持ブラケット１９にねじ止めされている。
【００１２】
また、前記ライザ１８は、ステンレス薄鋼板を交互に波山形状に折り曲げて前記踏面クリート２４の凸状部２４Ａと凹溝部２４Ｂと同様な凸状部３０Ａと凹溝部３０Ｂとを形成したライザクリート３０と、その裏側を点溶接等により補強したライザ補強体３１とで構成され、このライザ補強体３１を前記支持ブラケット１９に固定している。そして、前記ライザクリート３０の上端部は、前記後端部クリート２７の肉厚部に埋め込んでいる。
【００１３】
上記構成の踏段４は、乗降床９の先端に設けた櫛板１６の櫛歯１６Ｔを、前記踏板１７の各凹溝部２４Ｂ，２６Ｂ，２７Ｂ，２８Ｂ，２９Ｂ内に非接触で臨ませている。
【００１４】
さらに、上記構成の踏段４は、前記踏面クリート２４の端部２４Ｆ，２４Ｒにおいて、凹溝部２４Ｂの底面２４Ｃに切欠き２４Ｄを形成しており、一方、前記クリート補強体２５には、前記切欠き２４Ｄと係合する複数の爪部３２Ｎを有し、これら爪部３２Ｎを連結する基部３２Ｂとからなる係合部材３２が、ねじ等の固定手段３３によって取付けられている。
【００１５】
具体的に説明すると、図４に示すように、踏面クリート２４の凹溝部２４Ｂの端部２４Ｆ，２４Ｒの底面２４Ｃに、凸状部２４Ａと同ピッチＰで、幅ｎ，長さｍの切欠き２４Ｄを設け、図５に示すように、係合部材３２には凸状部２４Ａと同ピッチＰで、前記切欠き２４Ｄの幅ｎより狭い幅ｎｎで、前記長さｍより長い長さmmで、厚さｔ１(図２)に形成された爪部３２Ｎが形成され、この爪部３２Ｎを前記切欠き２４Ｄから凹溝部２４Ｂの底面２４Ｃにδ１寸法重なるように係合するのである。
【００１６】
以上説明したように、前記踏面クリート２４の端部２４Ｆ，２４Ｒを構成したので、踏面クリート２４の長手方向の端部２４Ｆ，２４Ｒの凹溝部２４Ｂの底面２４Ｃが、係合部材３２により上方から押さえられので、凸状部２４Ａ及び凹溝部２４Ｂの底面２４Ｃの浮き上がりを阻止することができ、大事故に至るのを防止することができる。しかし、図７に示すように、例えば、係合部材３２がない場合には、凹溝部２４Ｂに対してクリート補強体２５への点溶接Ｓのない箇所において、小石や小片金属等の異物が侵入して凸状部２４Ａ内側の中空部Ｔを潰したり（想像線Ｘ）、倒したりして変形（想像線Ｙ）させてＺ方向に凸状部２４Ａ及び凹溝部２４Ｂの底面２４Ｃを浮き上がらせてしまう（想像線Ｚ１，Ｚ２）。そして、凸状部２４Ａ及び凹溝部２４Ｂの底面２４Ｃが浮き上がったまま櫛板１６の櫛歯１６Ｔに至ると、衝突して櫛板や踏面クリート２４を破壊する大事故となる。
【００１７】
このように、第一の実施の形態においては、係合部材３２が前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒの浮き上がりを阻止する手段となり、前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒにおける前記凹溝部２４Ｂ底部２４Ｃを上方向から抑える手段となり、前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒにおける前記凹溝部２４Ｂ底部２４Ｃが前記クリート補強体２５から離れるのを阻止する手段となり、前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒを前記クリート補強体２５側に押圧する手段となり、前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒを前記クリート補強体２５から浮上させる方向の外力が前記踏面クリート２４に作用したとき、その外力を受け止める手段となり、前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒにおける前記凹溝部２４Ｂ底部２４Ｃを上方向から抑える係合手段となるのである。
【００１８】
図８は、第二の実施の形態を示すもので、上記第一の実施の形態に比べて、専用の係合部材３２及び踏面クリート２４の凹溝部２４Ｂの底面２４Ｃの切欠き２４Ｄを不要としている。即ち、前端部クリート２６の凹溝部２６Ｂの底面２６Ｃから厚さｔ２の係合部２６Ｄを、踏面クリート２４の端部２４Ｆ，２４Ｒの凹溝部２４Ｂの底面２４Ｃに向かってδ２寸法重なるように突出させたのである。このように、係合部２６Ｄで踏面クリート２４の凹溝部２４Ｂの底面２４Ｃを上方から押さえることにより、第一の実施の形態と同じように、踏面クリート２４の端部２４Ｆ，２４Ｒの異物侵入による浮き上がりを防止することができる。
【００１９】
尚、上記第二の実施の形態においては、前端部クリート２６と踏面クリート２４との関係についてのみ説明したが、後端部クリート２７と踏面クリート２４との関係についても同様に構成されていることは云うまでもない。
【００２０】
また、前記係合部２６Ｄと踏面クリート２４の凹溝部２４Ｂの底面２４Ｃとの係合構成が、浮き上がりを阻止する手段、上方向から抑える手段、前記クリート補強体２５から離れるのを阻止する手段、前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒを前記クリート補強体２５側に押圧する手段、前記クリート補強体２５から浮上させる方向の外力が前記踏面クリート２４に作用したとき、その外力を受け止める手段、前記凹溝部２４Ｂ底部２４Ｃを上方向から抑える係合手段となるのである。
【００２１】
図９及び図１０は、第三の実施の形態を示すもので、上記第一の実施の形態に比べて、専用の係合部材３２及び踏面クリート２４の凹溝部２４Ｂの底面２４Ｃの切欠き２４Ｄを不要としている点では、上記第二の実施の形態と同じである。ただ、上記第二の実施の形態と異なるのは、前端部クリート２６の凹溝部２６Ｂの底面２６Ｃから、踏面クリート２４の端部２４Ｆ，２４Ｒの凹溝部２４Ｂの底面２４Ｃに向かって係合部２６Ｅを、δ３寸法突出させ、踏面クリート２４の端部２４Ｆ，２４Ｒの凹溝部２４Ｂの底面２４Ｃには、前記係合部２６Ｅと係合する係合凹部２４Ｅを一段低く形成したのである。
【００２２】
このように、係合部２６Ｅで踏面クリート２４の凹溝部２４Ｂの底面２４Ｃの係合凹部２４Ｅを上方から押さえることにより、第一及び第二の実施の形態と同じように、踏面クリート２４の端部２４Ｆ，２４Ｒの異物侵入による浮き上がりを防止することができる。
【００２３】
そして、前記係合部２６Ｅと係合凹部２４Ｅとの係合構成が、浮き上がりを阻止する手段、上方向から抑える手段、前記クリート補強体２５から離れるのを阻止する手段、前記踏面クリート２４の進行方向端部２４Ｆ，２４Ｒを前記クリート補強体２５側に押圧する手段、前記クリート補強体２５から浮き上がさせる方向の外力が前記踏面クリート２４に作用したとき、その外力を受け止める手段、前記凹溝部２４Ｂ底部２４Ｃを上方向から抑える係合手段となるのである。
【００２４】
さらに、第三の実施の形態によれば、踏面クリート２４の凹溝部２４Ｂの底面２４Ｃと、前端部クリート２６の凹溝部２６Ｂの底面２６Ｃとが面一となり、その結果、第一及び第二の実施の形態のように、踏面クリート２４の凹溝部２４Ｂの底面２４Ｃを浅くするような爪部３２Ｎや係合部２６Ｄが存在しないので、踏板１７が乗降床９の櫛板１６の櫛歯１６Ｔを通過する際に、櫛歯１６との隙間を減じることはなくなる。
【００２５】
尚、上記第三の実施の形態においては、前端部クリート２６と踏面クリート２４との関係についてのみ説明したが、後端部クリート２７と踏面クリート２４との関係についても同様に構成されていることは云うまでもない。
【００２６】
ところで、上記各実施の形態は、乗客コンベアとして、エスカレーターを一例として説明したが、踏板に段差が生じない電動道路にも本発明は適用することができる。
【００２７】
【発明の効果】
以上説明したように本発明によれば、櫛歯に異物が侵入しても踏面クリートの浮き上がり変形を防止し得る乗客コンベアを得ることができる。
【図面の簡単な説明】
【図１】本発明による乗客コンベアの踏段の第一の実施の形態を示す一部縦断側面図。
【図２】図１の前端部クリート周辺を示す一部縦断拡大側面図。
【図３】本発明による乗客コンベアの踏段を示す正面図。
【図４】図１の踏段の踏面クリートの一部を示す斜視図。
【図５】図４の踏面クリートに係合する係合部材の一部を示す斜視図。
【図６】乗客コンベアの上部を示す一部縦断概略側面図。
【図７】図２のIV−IV線に沿う縦断斜視図。
【図８】本発明による乗客コンベアの第二の実施の形態を示す図２相当図。
【図９】本発明による乗客コンベアの第三の実施の形態を示す図２相当図。
【図１０】図９の踏面クリートの端部を示す斜視図。
【符号の説明】
４…踏段、１７…踏板、２４…踏面クリート、２４Ａ，２６Ａ，２７Ａ…凸状部、２４Ｂ，２６Ｂ，２７Ｂ…凹溝部、２５…クリート補強体、２６Ｄ，２６Ｅ…係合部、２８，２９…端部クリート、３２…係合部材。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a passenger conveyor including an escalator and an electric road, and more particularly, to a passenger conveyor having a tread plate formed by forming a thin steel plate into a wave mountain to form a tread cleat.
[0002]
[Prior art]
In general, in a passenger conveyor such as an escalator, a step board on which a passenger on a step rides is formed by forming a stainless steel sheet having excellent durability into a wavy mountain as disclosed in, for example, JP-A-2001-89057. The tread cleat in which the ridge portions and the groove portions are alternately formed in parallel at equal intervals is used as a main component. In addition, a caution body extending in the width direction of the tread plate is disposed at one or both of the end portions in the traveling direction of the tread cleat, and an end cleat continuous with the tread cleat is provided as the caution body. Similarly, a side cleat as a caution object is arranged in the width direction of the tread cleat. These caution bodies are colored in a color that has an excellent alerting effect, such as yellow, and are formed of a synthetic resin material that is more elastic than stainless steel sheets.
[0003]
On the other hand, on both ends in the longitudinal direction of the passenger conveyor, a passenger floor for passengers to get on and off the tread is provided, and comb teeth are provided at the front of the passenger floor. The comb teeth are arranged so that the cutting edge enters the concave groove of each cleat, and conversely, the top of each cleat enters toward the root of the comb teeth, and the comb teeth and each cleat engage with each other through a minute gap. Yes.
[0004]
[Problems to be solved by the invention]
In the tread of the above configuration, when a foreign object such as a pebbles enters the meshing portion of the comb teeth and the tread cleat, the advancing direction end of the tread cleat is deformed and floated, which includes a risk of colliding with the comb teeth. At the same time, it takes a lot of time and money to restore it.
[0005]
An object of the present invention is to provide a passenger conveyor that can prevent the tread cleat from being lifted and deformed even if foreign matter enters the comb teeth.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a tread cleat in which a tread is formed by bending a thin steel plate alternately into a wavy mountain having a number of ridges and grooves, and cleat reinforcement provided on the back side of the tread cleat. In a passenger conveyor provided with a body and an end cleat located at the end of the tread cleat in the advancing direction, means for preventing the advancing end of the tread cleat from floating up from the cleat reinforcement body is provided. is there.
[0007]
According to the above configuration, even when foreign matter enters the meshing portion of the comb teeth and the tread cleat and deforms the tread cleat, the tread cleat end is prevented from lifting by the means for preventing the lift, As a result, there is no deformation that lifts up, and as a result, collision accidents with comb teeth due to tread cleat lifting can be reduced, and even in the worst case, only the comb teeth and end cleats that are easy to replace are affected. Since the replacement is avoided, the maintenance can be improved.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. An escalator 1 which is a type of passenger conveyor is connected to an endless step chain 3 and circulates in a main frame 2 installed across a lower floor (not shown) and an upper floor UF. The step 4, the balustrade 6 that guides the moving handrail 5 that stands on both sides in the moving direction of the step 4 and moves synchronously with the step 4, and the step chain 3 are wound around both ends of the main frame 2 in the longitudinal direction. A motor 7 is installed in the upper horizontal portion 8 of the main frame 2 and is rotated by a control command from the control device 11. 12 and a speed reducer 13, and a drive unit 14 that rotationally drives the chain wheel 7 via a drive chain 10. The step 4 is guided by a guide rail 15 laid in the main frame 2, and advances in a non-contact manner with a comb plate 16 provided at the front end of the landing floor 9 at the longitudinal end of the main frame 2. The direction of movement is reversed on the lower side of the getting-on / off floor 9.
[0009]
The configuration of the step 4 will be described in detail. The step 4 is roughly composed of a step plate 17 that forms a step surface on which a passenger is placed, and a riser having a convex curvature portion having a radius of curvature R from the lower step side of the step plate 17 downward. 18, a pair of left and right substantially triangular support brackets 19 that support the tread 17 and the riser 18 at both ends in the width direction, and a front wheel 21 that is pivotally supported by a front end portion 19F of the support bracket 19 via an axle 20. The rear end portion 19R of the support bracket 19 is constituted by a rear wheel 23 pivotally supported via an axle 22.
[0010]
The step board 17 is formed by alternately bending a stainless steel sheet into a wave-like shape to form the convex portions 24A and the concave groove portions 24B at an equal pitch, so that the convex portions 24A and the concave groove portions 24B are along the step traveling direction. The tread cleat 24 that is disposed, the cleat reinforcement body 25 that is located on the back side of the tread cleat 24 and is fixed to the bottom 24C of the groove 24B of the tread cleat 24 by spot welding S, and the tread cleat 24 A front end of a length W1 in the advancing direction having a convex portion 26A and a concave groove portion 26B, which is fixed to the support bracket 19 and is located over the entire width on the front side, and is connected to the convex portion 24A and the concave groove portion 24B of the tread surface cleat 24. The cleat 26 and the tread cleat 24 are positioned over the full width of the rear stage and fixed to the support bracket 19. A rear end cleat 27 having a convex portion 27A and a concave groove portion 27B connected to 24B in the advancing direction; and a front end cleat 26 and a rear end cleat 27 located on both sides in the width direction of the tread cleat 24; The side cleats 28 and 29 having a width W3 having convex portions 28A and 29A and concave grooves 28B and 29B having the same pitch as the convex portions 24A and concave grooves 24B of the tread cleat 24. It consists of and.
[0011]
The front end cleat 26, the rear end cleat 27, and the side cleats 28 and 29 are yellow or other colors that have a warning effect for the purpose of preventing the shoe tips from being caught in the gaps existing at the periphery of the step 4. The cleat reinforcement body is formed of a synthetic resin material such as a polycarbonate resin having elasticity to make it easy to pull out the shoe if the shoe tip is sandwiched. 25 or screwed to the support bracket 19.
[0012]
The riser 18 includes a riser cleat 30 in which a stainless steel sheet is alternately bent into a wavy shape to form a convex portion 30A and a concave groove portion 30B similar to the convex portion 24A and the concave groove portion 24B of the tread cleat 24. The riser reinforcement body 31 is reinforced by spot welding or the like on the back side, and the riser reinforcement body 31 is fixed to the support bracket 19. The upper end portion of the riser cleat 30 is embedded in the thick portion of the rear end cleat 27.
[0013]
In the step 4 having the above-described configuration, the comb teeth 16T of the comb plate 16 provided at the front end of the getting-on / off floor 9 are brought into contact with the recessed groove portions 24B, 26B, 27B, 28B, and 29B of the step plate 17 in a non-contact manner.
[0014]
Further, the step 4 configured as described above has a notch 24D formed in the bottom surface 24C of the recessed groove portion 24B at the end portions 24F and 24R of the tread cleat 24, while the cleat reinforcement body 25 has the notch 24D. An engaging member 32 having a plurality of claw portions 32N that engage with 24D and comprising a base portion 32B that couples the claw portions 32N is attached by a fixing means 33 such as a screw.
[0015]
More specifically, as shown in FIG. 4, notches having a width n and a length m are formed on the bottom surface 24C of the end portions 24F and 24R of the recessed groove portion 24B of the tread cleat 24 at the same pitch P as the convex portions 24A. As shown in FIG. 5, the engaging member 32 has the same pitch P as the convex portions 24A, a width nn narrower than the width n of the notch 24D, and a length mm longer than the length m. A claw portion 32N having a thickness t1 (FIG. 2) is formed, and this claw portion 32N is engaged from the notch 24D to the bottom surface 24C of the concave groove portion 24B so as to overlap the δ1 dimension.
[0016]
As described above, since the end portions 24F and 24R of the tread cleat 24 are configured, the bottom surface 24C of the concave groove portion 24B of the longitudinal end portions 24F and 24R of the tread cleat 24 is pressed from above by the engaging member 32. Therefore, it is possible to prevent the bottom surface 24C of the convex portion 24A and the concave groove portion 24B from being lifted, and to prevent a major accident. However, as shown in FIG. 7, for example, when there is no engaging member 32, foreign matter such as pebbles or small pieces of metal enters the concave groove portion 24 </ b> B at a location where there is no spot welding S to the cleat reinforcement body 25. Then, the hollow portion T inside the convex portion 24A is crushed (imaginary line X), or is deformed by being tilted (imaginary line Y) to lift the bottom surface 24C of the convex portion 24A and the concave groove portion 24B in the Z direction. (Imaginary line Z1, Z2). And if it reaches the comb teeth 16T of the comb plate 16 while the bottom surface 24C of the convex portion 24A and the concave groove portion 24B is lifted, it will be a major accident that crashes and destroys the comb plate and the tread cleat 24.
[0017]
Thus, in the first embodiment, the engaging member 32 serves as a means for preventing the advancing direction end portions 24F, 24R of the tread surface cleat 24 from being lifted, and the advancing direction end portions 24F, 24R of the tread surface cleat 24 are provided. And the means for suppressing the bottom 24C of the groove 24B from above, and the means for preventing the bottom 24C of the groove 24B at the traveling direction ends 24F and 24R of the tread cleat 24 from separating from the cleat reinforcement 25. This is a means for pressing the advancing direction end portions 24F, 24R of the tread cleat 24 toward the cleat reinforcement body 25, and an external force in a direction to lift the advancing direction end portions 24F, 24R of the tread surface cleat 24 from the cleat reinforcement body 25 is described above. When acting on the tread cleat 24, the tread cleat 24 becomes a means for receiving the external force. 4 in the traveling direction end portion 24F, it become an engagement means for suppressing the upward direction the groove portion 24B bottom 24C in 24R.
[0018]
FIG. 8 shows a second embodiment, and compared with the first embodiment, a dedicated engagement member 32 and a notch 24D on the bottom surface 24C of the groove 24B of the tread cleat 24 are not required. Yes. That is, the engaging portion 26D having a thickness t2 is projected from the bottom surface 26C of the recessed groove portion 26B of the front end cleat 26 toward the bottom surface 24C of the recessed groove portion 24B of the end portions 24F and 24R of the tread surface cleat 24 so as to overlap the dimension δ2. It was. In this way, by pressing the bottom surface 24C of the recessed groove portion 24B of the tread cleat 24 from above with the engaging portion 26D, as in the first embodiment, due to foreign matter intrusion at the end portions 24F, 24R of the tread cleat 24. Lifting can be prevented.
[0019]
In the second embodiment, only the relationship between the front end cleat 26 and the tread cleat 24 has been described. However, the relationship between the rear end cleat 27 and the tread cleat 24 is configured similarly. Needless to say.
[0020]
Further, the engagement configuration of the engagement portion 26D and the bottom surface 24C of the concave groove portion 24B of the tread cleat 24 is a means for preventing lifting, a means for suppressing from above, a means for preventing separation from the cleat reinforcement 25, Means for pressing the advancing direction end portions 24F, 24R of the tread cleat 24 toward the cleat reinforcement body 25, and means for receiving the external force when an external force in the direction of rising from the cleat reinforcement body 25 acts on the tread cleat 24. Thus, the engaging means for restraining the bottom 24C of the concave groove 24B from above is provided.
[0021]
9 and 10 show the third embodiment. Compared to the first embodiment, the dedicated engagement member 32 and the notch 24D in the bottom surface 24C of the concave groove 24B of the tread cleat 24 are shown. Is the same as the second embodiment described above. However, the difference from the second embodiment is that the engaging portion 26E is directed from the bottom surface 26C of the concave groove portion 26B of the front end cleat 26 toward the bottom surface 24C of the concave groove portions 24B of the end portions 24F and 24R of the tread surface cleat 24. Is protruded by a dimension δ3, and an engaging recess 24E that engages with the engaging portion 26E is formed on the bottom surface 24C of the recessed groove portion 24B of the end portions 24F and 24R of the tread surface cleat 24 by one step lower.
[0022]
In this way, by pressing the engaging recess 24E of the bottom surface 24C of the recessed groove 24B of the tread cleat 24 from above with the engaging portion 26E, the end of the tread cleat 24 is the same as in the first and second embodiments. It is possible to prevent the parts 24F and 24R from being lifted due to entry of foreign matter.
[0023]
The engagement structure of the engagement portion 26E and the engagement recess 24E is a means for preventing lifting, a means for suppressing from above, a means for preventing separation from the cleat reinforcement 25, and the progress of the tread cleat 24. Means for pressing the direction end portions 24F, 24R toward the cleat reinforcement body 25, means for receiving the external force in the direction of lifting from the cleat reinforcement body 25 on the tread cleat 24, the concave groove section This is an engaging means for holding the 24B bottom 24C from above.
[0024]
Furthermore, according to the third embodiment, the bottom surface 24C of the recessed groove portion 24B of the tread cleat 24 and the bottom surface 26C of the recessed groove portion 26B of the front end cleat 26 are flush with each other. As in the embodiment, there is no claw portion 32N or engagement portion 26D that makes the bottom surface 24C of the recessed groove portion 24B of the tread cleat 24 shallow, so that the tread plate 17 has the comb teeth 16T of the comb plate 16 of the boarding / exiting floor 9 When passing, the gap with the comb teeth 16 is not reduced.
[0025]
In the third embodiment, only the relationship between the front end cleat 26 and the tread cleat 24 has been described. However, the relationship between the rear end cleat 27 and the tread cleat 24 is configured similarly. Needless to say.
[0026]
By the way, although each said embodiment demonstrated the escalator as an example as a passenger conveyor, this invention is applicable also to the electric road where a level | step difference does not arise in a tread.
[0027]
【The invention's effect】
As described above, according to the present invention, it is possible to obtain a passenger conveyor that can prevent the tread cleat from being lifted and deformed even if foreign matter enters the comb teeth.
[Brief description of the drawings]
FIG. 1 is a partially longitudinal side view showing a first embodiment of steps of a passenger conveyor according to the present invention.
FIG. 2 is a partially longitudinally enlarged side view showing the vicinity of the front end cleat of FIG.
FIG. 3 is a front view showing steps of a passenger conveyor according to the present invention.
4 is a perspective view showing a part of a tread cleat of the step in FIG. 1. FIG.
5 is a perspective view showing a part of an engaging member that engages with the tread cleat of FIG. 4; FIG.
FIG. 6 is a partially longitudinal schematic side view showing an upper portion of a passenger conveyor.
7 is a vertical perspective view taken along the line IV-IV in FIG. 2;
FIG. 8 is a view corresponding to FIG. 2 showing a second embodiment of a passenger conveyor according to the present invention.
FIG. 9 is a view corresponding to FIG. 2 showing a third embodiment of a passenger conveyor according to the present invention.
10 is a perspective view showing an end of the tread cleat of FIG. 9. FIG.
[Explanation of symbols]
4 ... Step, 17 ... Tread, 24 ... Tread cleat, 24A, 26A, 27A ... Convex part, 24B, 26B, 27B ... Concave groove part, 25 ... Cleat reinforcement, 26D, 26E ... Engagement part, 28, 29 ... End cleat, 32 ... engaging member.

Claims

A step is made of a thin steel plate and is formed on a tread cleat formed on a wavy mountain having a number of ridges and grooves, a cleat reinforcement provided on the back side of the tread cleat, and an end portion in the traveling direction of the tread cleat. In the passenger conveyor provided with the end cleat, there is provided an engaging means for restraining the bottom of the concave groove at the end in the traveling direction of the tread cleat from above, and the engaging means is fixed to the cleat reinforcement body. Characteristic passenger conveyor.

The step is made of a thin steel plate and is formed on a tread cleat formed on a ridge having a large number of ridges and grooves, a cleat reinforcement provided on the back side of the tread cleat, and the end of the tread cleat in the traveling direction. In the passenger conveyor provided with the end cleat and the support bracket for fixing the end cleat, there is provided an engaging means for restraining the bottom of the groove portion at the end in the traveling direction of the tread cleat from above. Passenger conveyor characterized in that is fixed to the support bracket.

The passenger conveyor according to claim 1 or 2, wherein the engaging means is provided on an end cleat.

A concave portion that protrudes toward the cleat reinforcement body is formed in an engaging portion of the bottom portion of the concave groove portion at the end portion in the traveling direction of the tread cleat, and the engaging means engages with the concave portion. The passenger conveyor according to claim 1, wherein the passenger conveyor is formed in a shape that does not protrude into the bottom of the groove.