JP4459350B2

JP4459350B2 - Passenger conveyor treadle chain tensioning device

Info

Publication number: JP4459350B2
Application number: JP35656799A
Authority: JP
Inventors: 英樹庵下
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 1999-12-15
Filing date: 1999-12-15
Publication date: 2010-04-28
Anticipated expiration: 2019-12-15
Also published as: JP2001171965A

Description

【０００１】
【発明の属する技術分野】
この発明は、多数の踏板を無端状に連結した踏板鎖が主枠内を循環移動するエスカレーター、移動歩道等の乗客コンベヤーの踏板鎖緊張装置に関する。
【０００２】
【従来の技術】
図１２及び図１３は、例えば特開平１０−５９６７０号公報に示された構成に類似した従来の乗客コンベヤーの踏板鎖緊張装置を示す図で、図１２はエスカレーターを概念的に示す側面図、図１３は図１２のエスカレーターにおける緊張車縁部箇所の拡大断面図である。図において、１はエスカレーターからなる乗客コンベヤーの主枠で、トラスによって構成されている。
【０００３】
２は主枠１内の上部に配置された駆動鎖歯車、３は主枠１内の下部に配置された緊張装置で、主枠１の長手方向に変位自在に装備された緊張車４、緊張車４を主枠１下端部方向へ付勢する付勢機構５によって構成されている。６はローラチェーンからなる踏板鎖で、多数の踏板７を無端状に連結し、駆動鎖歯車２及び緊張車４に巻掛けられて主枠１内を循環移動する。
【０００４】
８は主枠１の上端部に設けられた駆動装置で、巻掛伝動機構により駆動鎖歯車２を介して踏板鎖６を駆動する。９は主枠１の幅方向の両側に長手に沿って立設された欄干である。１０は緊張車４のリムに設けられて回転方向に沿う方向に配置された嵌合溝、１１は緩衝材で、ゴム等の粘弾性材が円環状に形成されて嵌合溝１０に嵌着されて、上面が緊張車４の外径よりも突出して設けられている。
【０００５】
１２は踏板鎖６のリンクプレートで、緊張車４の側面に空隙を形成して嵌合し、緊張車４の外径に一部が重合して配置される。１３は踏板鎖６のローラーで、緊張車４に巻掛けられた状態で緩衝材１１に支持される。１４は踏板鎖６のリンクプレート１２とローラー１３を連結するピンである。
【０００６】
従来の乗客コンベヤーの踏板装置は上記のように構成されて、踏板７を無端状に連結した踏板鎖６が駆動鎖歯車２及び緊張車４に巻掛けられる。そして、駆動装置８が付勢されると踏板鎖６を介して踏板７が主枠１内を循環移動して踏板７上の乗客を搬送する。
【０００７】
また、図示が省略してあるが駆動鎖歯車２の歯に踏板鎖６のローラー１３との係合音を少なくするゴム製の防音片が設けられる。また、緊張車４にはローラー１３との係合音を少なくするゴム等による防音用の円環状をなす緩衝材１１が設けられる。そして、このような構造によって乗客コンベヤーの運転を静粛化するようになっている。
【０００８】
【発明が解決しようとする課題】
上記のような従来の乗客コンベヤーの踏板鎖緊張装置では、緊張車４の劣化した円環状の緩衝材１１を取り替える場合に、踏板７の一部撤去、踏板鎖６の弛緩、緊張車４軸の一側を外し持ち上げて劣化した緩衝材１１を取り外し、また更新する緩衝材１１を挿通する等の煩雑な作業を要し、手数と多大な費用が掛かるという問題点があった。
【０００９】
この発明は、かかる問題点を解消するためになされたものであり、無端状の踏板鎖が巻掛けられた緊張車の緩衝材を容易に取り替えできる乗客コンベヤーの踏板鎖緊張装置を得ることを目的とする。
【００１０】
この発明に係る乗客コンベヤーの踏板鎖緊張装置においては、乗客コンベヤーの踏板が多数連結されて無端状に構成され、乗客コンベヤーの主枠内を循環移動する踏板鎖、リムに回転方向に沿う嵌合溝が凹設され、主枠の端部に設けられて主枠の長手方向に変位自在に装備され、踏板鎖が巻掛けられて踏板鎖に張力を付与する緊張車と、端部を互いに隣接して配置された複数個によって円環を形成し、嵌合溝に嵌合されてそれぞれ締結具によって緊張車に締結され、踏板鎖のローラを支持する緩衝片とが設けられ、緊張車の回転中心における踏板鎖のローラーのピッチ角の整数倍とならない角度に、緊張車の回転中心におけるそれぞれの緩衝片のピッチ角が設定される。
【００１１】
また、この発明に係る乗客コンベヤーの踏板鎖緊張装置においては、乗客コンベヤーの踏板が多数連結されて無端状に構成され、乗客コンベヤーの主枠内を循環移動する踏板鎖、主枠の端部に設けられて主枠の長手方向に変位自在に装備され、踏板鎖が巻掛けられて踏板鎖に張力を付与する緊張車と、円弧状片からなる取付金具の表面に接着剤によって接着され端部を互いに隣接して配置された複数個によって円環を形成し、緊張車のリム面に取付金具の裏面を介して配置され、それぞれ締結具によって緊張車に締結されて踏板鎖のローラを支持する緩衝片とが設けられ、緊張車の回転中心における踏板鎖のローラーのピッチ角の整数倍とならない角度に、緊張車の回転中心におけるそれぞれの緩衝片のピッチ角が設定される。
【００１２】
また、この発明に係る乗客コンベヤーの踏板鎖緊張装置においては、少なくとも三個によって円環を形成する緩衝片が設けられる。
【００１３】
また、この発明に係る乗客コンベヤーの踏板鎖緊張装置においては、緊張車の回転中心における踏板鎖のローラーのピッチ角にいかなる整数を乗じても３６０°にならない関係が成立する長さに、緊張車の外周において形成される緩衝片の合計外周長さが設定される。
【００１４】
また、この発明に係る乗客コンベヤーの踏板鎖緊張装置においては、緊張車の嵌合溝の一側の側壁の外側から、この側壁及び緊張車の嵌合溝に嵌合された緩衝片に挿通されて、緊張車の嵌合溝の他側の側壁にねじ込まれた締結具が設けられる。
【００１５】
また、この発明に係る乗客コンベヤーの踏板鎖緊張装置においては、乗客コンベヤーの踏板が多数連結されて無端状に構成され、乗客コンベヤーの主枠内を循環移動する踏板鎖、リムに回転方向に沿う嵌合溝が凹設され、主枠の端部に設けられて主枠の長手方向に変位自在に装備され、踏板鎖が巻掛けられて踏板鎖に張力を付与する緊張車と、端部を互いに隣接して配置された複数個によって円環を形成し、嵌合溝に嵌合されてそれぞれ締結具によって緊張車に締結され、踏板鎖のローラを支持する緩衝片とが設けられ、緊張車の嵌合溝の一側の側壁の外側から、この側壁及び緊張車の嵌合溝に嵌合された緩衝片に挿通されて、緊張車の嵌合溝の他側の側壁にねじ込まれた締結具が設けられる。
【００１６】
【発明の実施の形態】
実施の形態１．
図１〜図５は、この発明の実施の形態の一例を示す図で、図１はエスカレーターの主枠下端部を概念的に示す側面図、図２は図１のエスカレーターにおける緊張車の拡大図、図３は図２のＡ部拡大図、図４は踏板鎖が巻掛けられた状態を示す図３のＢ−Ｂ線断面図、図５は図１のエスカレーターにおける緩衝材の取り替え作業の工程図である。なお、図１〜図５の他は前述の図１２及び図１３と同様に乗客コンベヤーが構成されている。
【００１７】
図において、１はエスカレーターからなる乗客コンベヤーの主枠で、トラスによって構成されている。３は主枠１内の下部に配置された緊張装置で、主枠１の長手方向に変位自在に装備された緊張車４、緊張車４を主枠１下端部方向へ付勢する付勢機構５によって構成されている。６はローラチェーンからなる踏板鎖で、多数の踏板７を無端状に連結し、前述の駆動鎖歯車２及び緊張車４に巻掛けられて主枠１内を循環移動する。
【００１８】
１０は緊張車４のリムに設けられて回転方向に沿う方向に配置された嵌合溝である。１５は緩衝片で、ゴム等の粘弾性材からなり端部を互いに隣接して配置されて、円周を分割した複数個、すなわち三個によって円周を分割して円環を形成し、嵌合溝１０に嵌合されて、上面が緊張車４の外径よりも突出して設けられている。１６は締結具で、皿ねじからなり緩衝片１５の長手に沿って互いに離れて配置されて、緩衝片１５に表面から挿通されて緊張車４の嵌合溝１０の底面にねじ込まれている。
【００１９】
１２は踏板鎖６のリンクプレートで、緊張車４の側面に空隙を形成して嵌合し、緊張車４の外径に一部が重合して配置される。１３は踏板鎖６のローラーで、緊張車４に巻掛けられた状態において緩衝片１５に支持される。１４は踏板鎖６のリンクプレート１２とローラー１３を連結するピンである。１７は主枠１下端部に着脱自在に設けられた乗降口床板、１８は乗降口床板１７の主枠１長手中心寄りの縁部に着脱自在に設けられた櫛板である。
【００２０】
上記のように構成された乗客コンベヤーの踏板鎖緊張装置において、踏板７を無端状に連結した踏板鎖６が駆動鎖歯車２及び緊張車４に巻掛けられる。そして、前述の駆動装置８が付勢されると踏板鎖６を介して踏板７が主枠１内を循環移動して踏板７上の乗客を搬送する。
【００２１】
また、図示が省略してあるが駆動鎖歯車２の歯に踏板鎖６のローラー１３との係合音を少なくするゴム製の防音片が設けられる。また、緊張車４には踏板鎖６のローラー１３を支持して緊張車４とローラー１３との係合音を少なくするゴム等による緩衝片１５が設けられる。そして、このような構造によって乗客コンベヤーの運転を静粛化するようになっている。
【００２２】
そして、緊張車４の劣化した緩衝片１５を取り替える場合に、図５に示す工程による作業が行われる。すなわち、ステップ１０１により主枠１下端部寄りの踏板７の一部が踏板鎖６から取り外されて連続した踏板７列の中に開口部が形成される。また、乗降口床板１７及び櫛板１８が取り外されて作業用のスペースが設けられる。
【００２３】
次いで、ステップ１０２において駆動装置８を手動操作して、撤去踏板７による開口部を緊張車４における主枠１上端側へ移動する。そして、ステップ１０３により緊張車４における踏板鎖６が卷回されていない箇所、すなわち踏板鎖６の非卷回箇所である図１に示す矢印Ｃ側から非卷回箇所に対応した緩衝片１５が、締結具１６による締結を解除して撤去される。
【００２４】
次に、ステップ１０４によって再度駆動装置８を手動操作し、緊張車４を回動して非卷回箇所に、次に対応した緩衝片１５が締結具１６による締結を解除して撤去される。そして、この操作と同様な作業を繰り返すことによって全数の緩衝片１５が撤去される。
【００２５】
そして、ステップ１０５により、前述のステップ１０２〜ステップ１０４と全く逆の手順によって、順次新しい緩衝片１５が緊張車４の嵌合溝１０に嵌合されて、締結具１６により緊張車４の嵌合溝１０に締結されて装着される。そして、このような作業を繰り返えして全数の緩衝片１５が装着される。次いで、ステップ１０６により取り外された踏板７、乗降口床板１７及び櫛板１８が従前の状態に復帰されて、劣化した緩衝片１５の取り替える作業が終了する。
【００２６】
このような、緩衝片１５の取り替え作業においては、踏板鎖６の弛緩、緊張車４軸の一側を外し持ち上げて緩衝材１１を挿通する等の煩雑な作業を要しない。このため、無端状の踏板鎖６が巻掛けられた緊張車４の緩衝片１５を容易に取り替えでき、作業時間が減少し緩衝片１５の取り替え作業の費用を節減することができる。
【００２７】
なお、図１〜図５の実施の形態は、三個によって円周を分割して円環を形成する緩衝片１５を設けて、緊張車４の嵌合溝１０の長手沿う緩衝片長さを、緊張車４の踏板鎖６が卷回されていない箇所の長さよりも短く設定したものである。しかし、このような長さの緩衝片を、他の適宜な複数個によって円周を分割して円環を形成する緩衝片とした構成であっても、図１〜図５の実施の形態における作用を得ることができる。
【００２８】
実施の形態２．
図６は、この発明の他の実施の形態の一例を示す図で、エスカレーターにおける緊張車箇所の拡大図で、前述の図１の要部相当図である。なお、図６の他は前述の図１２及び図１３と同様に乗客コンベヤーが構成されている。図において、図１〜図５と同符号は相当部分を示し、１９は緩衝片で、ゴム等の粘弾性材からなり端部を互いに隣接して配置されて、円周を分割した複数個、すなわち四個によって円環を形成し、嵌合溝１０に嵌合されて、上面が緊張車４の外径よりも突出して設けられている。
【００２９】
２０は緩衝片１９相互の対向端部、すなわち継ぎ目である。また、図６に示すθは、緊張車４の回転中心におけるそれぞれの緩衝片１９のピッチ角、また図６に示すφは、緊張車４の回転中心における踏板鎖６のローラー１３のピッチ角である。
【００３０】
上記のように構成された乗客コンベヤーの踏板鎖緊張装置において、前述の図１〜図５の実施の形態と同様に乗客コンベヤーが運転され、また緊張車４に緩衝片１９が設けられる。したがって、詳細な説明を省略するが図６の実施の形態においても図１〜図５の実施の形態と同様な作用が得られる。
【００３１】
なお、乗客コンベヤーにおいて一般的に、ローラー１３のピッチが一定の踏板鎖６が使用される。また、ローラー１３のピッチ角φは緩衝片１９の厚さ等のために変化する。このような状況に対して、緊張車４の外周において形成される緩衝片１９の合計外周長さを、踏板鎖６のローラー１３のピッチ角φにいかなる整数を乗じても３６０°にならない関係が成立するように設定する。（例えば、φ＝７°とする）
【００３２】
これにより、踏板鎖６の循環移動によって緩衝片１９の長手方向の同位置に踏板鎖６のローラー１３が当たらないようにすることができる。このため、緩衝片１９の長手方向の同位置に常にローラー１３が当たって、損耗が進行する不具合を未然に防ぐことができる。
【００３３】
また、それぞれの緩衝片１９のピッチ角θが、踏板鎖６のローラー１３のピッチ角φの整数倍とならないように設定される。このため、緩衝片１９相互の継ぎ目２０のそれぞれに踏板鎖６のローラー１３が同時に対向することがない。したがって、すべての継ぎ目２０に踏板鎖６のローラー１３が同時に嵌まり込んだ場合に、憂慮される踏板鎖６に振動等の不具合の発生を未然に防止することができる。
【００３４】
実施の形態３．
図７〜図９も、この発明の他の実施の形態の一例を示す図で、図７はエスカレーターにおける緊張車箇所の拡大図で、前述の図１の要部相当図、図８は図７の要部断面図で、前述の図４相当図、図９は図７の平面図である。なお、図７〜図９の他は前述の図１２及び図１３と同様に乗客コンベヤーが構成されている。図において、前述の図１〜図５と同符号は相当部分を示す。
【００３５】
２１は緩衝片で、ゴム等の粘弾性材からなり端部を互いに隣接して配置されて、円周を分割した複数個によって円環を形成し、緊張車４の嵌合溝１０の底面に接して嵌合されて、上面が緊張車４の外径よりも突出して設けられている。２２は締結具で、皿ねじからなり緊張車４の嵌合溝１０の一側の側壁の外側から、この側壁及び緩衝片２１に挿通されて嵌合溝１０の他側の側壁にねじ込まれ、緊張車４縁部における円周に沿って互いに離れて配置されている。
【００３６】
上記のように構成された乗客コンベヤーの踏板鎖緊張装置において、前述の図１〜図５の実施の形態と同様に乗客コンベヤーが運転され、また緊張車４に緩衝片２１が設けられる。したがって、詳細な説明を省略するが図７〜図９の実施の形態においても図１〜図５の実施の形態と同様な作用が得られる。
【００３７】
また、図９に示す矢印Ｄ又は矢印Ｅ方向から、すなわち緊張車４の縁部側面から締結具２２を操作して、緩衝片２１を着脱することができる。このため、緊張車４の劣化した緩衝片２１の取り替え作業時に締結具２２を容易に操作できて作業能率を向上することができる。なお、締結具２２に代えて適宜なテーパーピン、割ピン等を使用しても図７〜図９の実施の形態における作用を得ることができる。
【００３８】
実施の形態４．
図１０及び図１１も、この発明の他の実施の形態の一例を示す図で、図１０は前述の図４相当図、図１１は図１０の緩衝片箇所の側面図である。なお、図１０及び図１１の他は前述の図１２及び図１３と同様に乗客コンベヤーが構成されている。図において、前述の図１〜図５と同符号は相当部分を示す。
【００３９】
２３は緊張車４の外周縁部側面から引退して構成された凹所、２４は取付金具で、横断面Ｌ字状をなす円弧状片からなり、端部を互いに隣接して配置されて、円周を分割した複数個によって円環を形成し、Ｌ字の一辺が凹所２３に嵌合して設けられている。
【００４０】
２５は締結具で、皿ねじからなり取付金具２４の凹所２３に嵌合したＬ字の一辺に頭部が埋設状態に配置され、Ｌ字の一辺に挿通されて緊張車４にねじ込まれている。２６は緩衝片で、ゴム等の粘弾性材からなり取付金具２４のＬ字の他辺の外面に接着剤によって接着されて、上面が見かけ上の緊張車４の外径を形成し、踏板鎖６のローラー１３を支持して緊張車４とローラー１３との係合音を少なくする。
【００４１】
上記のように構成された乗客コンベヤーの踏板鎖緊張装置において、前述の図１〜図５の実施の形態と同様に乗客コンベヤーが運転され、また緊張車４に緩衝片２６が設けられる。したがって、詳細な説明を省略するが図１０及び図１１の実施の形態においても図１〜図５の実施の形態と同様な作用が得られる。
【００４２】
また、緊張車４の劣化した緩衝片２１の取り替え作業時に、前述の緊張車４の嵌合溝１０に緩衝片２６を嵌合する必要がなく、また緩衝片２６に挿通孔を設けて締結具２３を挿通する必要もない。そして、前述の図９に示す矢印Ｄ又は矢印Ｅ方向から、すなわち緊張車４の縁部側面から締結具２２を操作して、緩衝片２１を着脱することができる。このため、緊張車４の劣化した緩衝片２１の取り替え作業を容易に行うことができて作業能率を向上することができる。
【００４３】
【発明の効果】
この発明は以上説明したように、乗客コンベヤーの踏板が多数連結されて無端状に構成され、乗客コンベヤーの主枠内を循環移動する踏板鎖、リムに回転方向に沿う嵌合溝が凹設され、主枠の端部に設けられて主枠の長手方向に変位自在に装備され、踏板鎖が巻掛けられて踏板鎖に張力を付与する緊張車と、端部を互いに隣接して配置された複数個によって円環を形成し、嵌合溝に嵌合されてそれぞれ締結具によって緊張車に締結され、踏板鎖のローラを支持する緩衝片とを設け、緊張車の回転中心における踏板鎖のローラーのピッチ角の整数倍とならない角度に、緊張車の回転中心におけるそれぞれの緩衝片のピッチ角を設定したものである。
【００４４】
これによって、緊張車に緩衝片が設けられて踏板鎖のローラーを支持し、緊張車とローラーとの係合音を少なくして乗客コンベヤーの運転を静粛化する。また、緊張車の劣化した緩衝片を取り替える場合に、緊張車において踏板鎖が卷回されていない非卷回箇所での作業によって緩衝片が緊張車から順次撤去される。そして、緊張車における踏板鎖の非卷回箇所での作業によって更新される緩衝片が緊張車に順次装着される。このため、無端状の踏板鎖が巻掛けられた緊張車の緩衝片を容易に取り替えでき、作業時間が減少し緩衝片の取り替え作業の費用を節減する効果がある。また、踏板鎖のローラーのピッチ角の整数倍とならない角度に、それぞれの緩衝片のピッチ角が設定されるので、それぞれの緩衝片相互の継ぎ目に踏板鎖のローラーが同時に対向することがない。したがって、すべての継ぎ目に踏板鎖のローラーが同時に嵌まり込んだ場合に踏板鎖に振動等の不具合の発生を未然に防止する効果がある。
【００４５】
また、この発明は以上説明したように、乗客コンベヤーの踏板が多数連結されて無端状に構成され、乗客コンベヤーの主枠内を循環移動する踏板鎖、主枠の端部に設けられて主枠の長手方向に変位自在に装備され、踏板鎖が巻掛けられて踏板鎖に張力を付与する緊張車と、円弧状片からなる取付金具の表面に接着剤によって接着され端部を互いに隣接して配置された複数個によって円環を形成し、緊張車のリム面に取付金具の裏面を介して配置され、それぞれ締結具によって緊張車に締結され、踏板鎖のローラを支持する緩衝片とを設け、緊張車の回転中心における踏板鎖のローラーのピッチ角の整数倍とならない角度に、緊張車の回転中心におけるそれぞれの緩衝片のピッチ角を設定したものである。
【００４６】
これによって、緊張車に緩衝片が設けられて踏板鎖のローラーを支持し、緊張車とローラーとの係合音を少なくして乗客コンベヤーの運転を静粛化する。また、緊張車の劣化した緩衝片を取り替える場合に、緊張車において踏板鎖が卷回されていない非卷回箇所での作業によって取付金具に装着された緩衝片が緊張車から順次撤去される。そして、緊張車における踏板鎖の非卷回箇所での作業によって取付金具に装着された更新される緩衝片が緊張車に順次装着される。このため、無端状の踏板鎖が巻掛けられた緊張車の緩衝片を容易に取り替えでき、作業時間が減少し緩衝片の取り替え作業の費用を節減する効果がある。また、踏板鎖のローラーのピッチ角の整数倍とならない角度に、それぞれの緩衝片のピッチ角が設定されるので、それぞれの緩衝片相互の継ぎ目に踏板鎖のローラーが同時に対向することがない。したがって、すべての継ぎ目に踏板鎖のローラーが同時に嵌まり込んだ場合に踏板鎖に振動等の不具合の発生を未然に防止する効果がある。
【００４７】
また、この発明は以上説明したように、少なくとも三個によって円環を形成する緩衝片を設けたものである。
【００４８】
これによって、緊張車に緩衝片が設けられて踏板鎖のローラーを支持し、緊張車とローラーとの係合音を少なくして乗客コンベヤーの運転を静粛化する。また、緊張車の劣化した緩衝片を取り替える場合に、緊張車において踏板鎖が卷回されていない非卷回箇所での作業によって、少なくとも三個によって円環を形成する緩衝片が緊張車から順次撤去され、また非卷回箇所での作業によって更新される緩衝片が緊張車に順次装着される。このため、無端状の踏板鎖が巻掛けられた緊張車の緩衝片を容易に取り替えでき、作業時間が減少し緩衝片の取り替え作業の費用を節減する効果がある。
【００４９】
また、この発明は以上説明したように、緊張車の回転中心における踏板鎖のローラーのピッチ角にいかなるの整数を乗じても３６０°にならない関係が成立する長さに、緊張車の外周において形成される緩衝片の合計外周長さを設定したものである。
【００５０】
これによって、緊張車に緩衝片が設けられて踏板鎖のローラーを支持し、緊張車とローラーとの係合音を少なくして乗客コンベヤーの運転を静粛化する。また、緊張車の劣化した緩衝片を取り替える場合に、緊張車において踏板鎖が卷回されていない非卷回箇所での作業によって緩衝片が緊張車から順次撤去され、また、踏板鎖の非卷回箇所での作業により更新される緩衝片が緊張車に順次装着される。このため、無端状の踏板鎖が巻掛けられた緊張車の緩衝片を容易に取り替えでき、作業時間が減少し緩衝片の取り替え作業の費用を節減する効果がある。
また、踏板鎖のローラーのピッチ角にいかなる整数を乗じても３６０°にならない関係が成立する長さに、緩衝片の合計長さが設定されるので、踏板鎖の循環移動によって緩衝片の長手方向の同位置に踏板鎖のローラーが当たることがない。このため、緩衝片の長手方向の同位置に常にローラーが当たって、損耗が進行する不具合を未然に防ぐ効果がある。
【００５１】
また、この発明は以上説明したように、緊張車の嵌合溝の一側の側壁の外側から、この側壁及び緊張車の嵌合溝に嵌合された緩衝片に挿通されて、緊張車の嵌合溝の他側の側壁にねじ込まれた締結具を設けたものである。
【００５２】
これによって、緊張車に緩衝片が設けられて踏板鎖のローラーを支持し、緊張車とローラーとの係合音を少なくして乗客コンベヤーの運転を静粛化する。また、緊張車の劣化した緩衝片を取り替える場合に、緊張車において踏板鎖が卷回されていない非卷回箇所での作業によって緩衝片が緊張車から順次撤去され、また、踏板鎖の非卷回箇所での作業により更新される緩衝片が緊張車に順次装着される。このため、無端状の踏板鎖が巻掛けられた緊張車の緩衝片を容易に取り替えでき、作業時間が減少し緩衝片の取り替え作業の費用を節減する効果がある。
また、緊張車の縁部側面から締結具を操作して、緩衝片を着脱することができるので、緊張車の劣化した緩衝片の取り替え作業時に締結具を容易に操作できて作業能率を向上する効果がある。
【００５３】
また、この発明は以上説明したように、乗客コンベヤーの踏板が多数連結されて無端状に構成され、乗客コンベヤーの主枠内を循環移動する踏板鎖、リムに回転方向に沿う嵌合溝が凹設され、主枠の端部に設けられて主枠の長手方向に変位自在に装備され、踏板鎖が巻掛けられて踏板鎖に張力を付与する緊張車と、端部を互いに隣接して配置された複数個によって円環を形成し、嵌合溝に嵌合されてそれぞれ締結具によって緊張車に締結され、踏板鎖のローラを支持する緩衝片とを設け、緊張車の嵌合溝の一側の側壁の外側から、この側壁及び緊張車の嵌合溝に嵌合された緩衝片に挿通されて、緊張車の嵌合溝の他側の側壁にねじ込まれた締結具を設けたものである。
【００５４】
これによって、緊張車に緩衝片が設けられて踏板鎖のローラーを支持し、緊張車とローラーとの係合音を少なくして乗客コンベヤーの運転を静粛化する。また、緊張車の劣化した緩衝片を取り替える場合に、緊張車において踏板鎖が卷回されていない非卷回箇所での作業によって緩衝片が緊張車から順次撤去され、また、踏板鎖の非卷回箇所での作業により更新される緩衝片が緊張車に順次装着される。このため、無端状の踏板鎖が巻掛けられた緊張車の緩衝片を容易に取り替えでき、作業時間が減少し緩衝片の取り替え作業の費用を節減する効果がある。
また、緊張車の縁部側面から締結具を操作して、緩衝片を着脱することができるので、緊張車の劣化した緩衝片の取り替え作業時に締結具を容易に操作できて作業能率を向上する効果がある。
【図面の簡単な説明】
【図１】この発明の実施の形態１を示す図で、エスカレーターの主枠下端部を概念的に示す側面図。
【図２】図１のエスカレーターにおける緊張車の拡大図。
【図３】図２のＡ部拡大図。
【図４】踏板鎖が巻掛けられた状態を示す図３のＢ−Ｂ線断面図。
【図５】図１のエスカレーターでの緩衝材の取り替え作業の工程図。
【図６】この発明の実施の形態２を示すエスカレーターにおける緊張車箇所の拡大図で、前述の図１の要部相当図。
【図７】この発明の実施の形態３を示す図で、エスカレーターにおける緊張車箇所の拡大図であり、前述の図１の要部相当図。
【図８】図７の要部断面図で、前述の図４相当図。
【図９】図７の平面図。
【図１０】この発明の実施の形態４を示す図で、前述の図４相当図。
【図１１】図１０の緩衝片箇所の側面図。
【図１２】従来の乗客コンベヤーの踏板鎖緊張装置を示す図で、エスカレーターを概念的に示す側面図。
【図１３】図１２のエスカレーターの緊張車縁部箇所の拡大断面図。
【符号の説明】
１主枠、４緊張車、６踏板鎖、７踏板、１０嵌合溝、１３ローラ、１５緩衝片、１６締結具、１９緩衝片、２１緩衝片、２２締結具、２４取付金具、２５締結具、２６緩衝片、θ 緊張車の回転中心での緩衝片のピッチ角、φ 緊張車の回転中心での踏板鎖のローラーのピッチ角。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a footboard chain tensioning device for passenger conveyors such as escalators and moving walkways in which a footboard chain in which a number of footboards are connected endlessly moves in a main frame.
[0002]
[Prior art]
FIGS. 12 and 13 are views showing a conventional passenger board tread chain tension device similar to the structure shown in Japanese Patent Laid-Open No. 10-59670, for example. FIG. 12 is a side view conceptually showing an escalator. 13 is an enlarged cross-sectional view of a tension wheel edge portion in the escalator of FIG. In the figure, reference numeral 1 denotes a main frame of a passenger conveyor composed of escalators, which is constituted by a truss.
[0003]
2 is a drive chain gear disposed in the upper part of the main frame 1, 3 is a tensioning device disposed in the lower part of the main frame 1, a tension wheel 4 slidably mounted in the longitudinal direction of the main frame 1, tension The urging mechanism 5 urges the vehicle 4 toward the lower end portion of the main frame 1. Reference numeral 6 denotes a tread plate chain composed of a roller chain, which connects a large number of tread plates 7 in an endless manner and is wound around the drive chain gear 2 and the tension wheel 4 to circulate in the main frame 1.
[0004]
A drive device 8 is provided at the upper end of the main frame 1 and drives the tread plate chain 6 via the drive chain gear 2 by a winding transmission mechanism. Reference numeral 9 denotes a balustrade erected along the length on both sides of the main frame 1 in the width direction. Reference numeral 10 denotes a fitting groove provided on the rim of the tension wheel 4 and arranged in a direction along the rotation direction. Reference numeral 11 denotes a cushioning material. A viscoelastic material such as rubber is formed in an annular shape and is fitted into the fitting groove 10. Thus, the upper surface is provided so as to protrude beyond the outer diameter of the tension wheel 4.
[0005]
A link plate 12 of the tread plate chain 6 is fitted with a gap formed on the side surface of the tension wheel 4 and partially overlapped with the outer diameter of the tension wheel 4. Reference numeral 13 denotes a roller for the tread plate chain 6, which is supported by the cushioning material 11 while being wound around the tension wheel 4. Reference numeral 14 denotes a pin for connecting the link plate 12 of the tread plate chain 6 and the roller 13.
[0006]
A conventional footboard device for a passenger conveyor is configured as described above, and a footboard chain 6 in which the footboard 7 is connected endlessly is wound around the drive chain gear 2 and the tension wheel 4. When the driving device 8 is energized, the tread 7 is circulated through the main frame 1 via the tread chain 6 to convey passengers on the tread 7.
[0007]
Although not shown, a rubber soundproof piece is provided on the teeth of the drive chain gear 2 to reduce the engagement sound of the tread plate chain 6 with the roller 13. Further, the tension wheel 4 is provided with a cushioning material 11 having a ring shape for soundproofing by rubber or the like that reduces the engagement sound with the roller 13. Such a structure makes the operation of the passenger conveyor quiet.
[0008]
[Problems to be solved by the invention]
In the conventional footboard chain tensioning device of the passenger conveyor as described above, when the deteriorated annular cushioning material 11 of the tensioner 4 is replaced, part of the footboard 7 is removed, the footboard chain 6 is relaxed, There is a problem that a troublesome work such as removing the buffer material 11 which has been deteriorated by removing one side and removing it and inserting the buffer material 11 to be renewed is required, and it takes a lot of time and money.
[0009]
The present invention has been made to solve such problems, and an object of the present invention is to provide a passenger conveyor footboard chain tensioning device that can easily replace a cushioning material of a tensioned vehicle on which an endless footboard chain is wound. And
[0010]
  In the footboard chain tensioning device of the passenger conveyor according to the present invention, a number of footboards of the passenger conveyor are connected and configured endlessly, and the footboard chain that circulates and moves in the main frame of the passenger conveyor, fitting to the rim along the rotation direction Grooves are recessed, and are provided at the end of the main frame so as to be freely displaceable in the longitudinal direction of the main frame. The tension wheel that winds the treadle chain to apply tension to the treadle chain and the end are adjacent to each other And a buffer piece for supporting the roller of the tread board chain is provided.The pitch angle of each buffer piece at the rotation center of the tension wheel is set to an angle that is not an integral multiple of the pitch angle of the rollers of the treadle chain at the rotation center of the tension wheel.
[0011]
  Further, in the footboard chain tension device of the passenger conveyor according to the present invention, a number of footboards of the passenger conveyor are connected and configured endlessly, and the footboard chain that circulates and moves in the main frame of the passenger conveyor, at the end of the main frame A tension wheel that is provided so as to be freely displaceable in the longitudinal direction of the main frame, and a treadle chain is wound around to apply tension to the treadle chain, and an end bonded to the surface of the mounting bracket made of an arc-shaped piece by an adhesive Are arranged adjacent to each other to form a ring, arranged on the rim surface of the tension wheel via the back surface of the mounting bracket, and fastened to the tension wheel by the fasteners to support the treadle chain roller A buffer piece is provided.The pitch angle of each buffer piece at the rotation center of the tension wheel is set to an angle that is not an integral multiple of the pitch angle of the rollers of the treadle chain at the rotation center of the tension wheel.
[0012]
Moreover, in the footboard chain tension device of the passenger conveyor according to the present invention, at least three buffer pieces that form a ring are provided.
[0013]
Further, in the footboard chain tensioning device of the passenger conveyor according to the present invention, the tensioned vehicle has such a length that a relationship that does not become 360 ° is obtained by multiplying any integer by the pitch angle of the roller of the footboard chain at the rotation center of the tensioning vehicle. The total outer peripheral length of the buffer pieces formed on the outer periphery is set.
[0014]
  Moreover, in the footboard chain tensioning device of the passenger conveyor according to the present invention, the cushioning piece fitted into the side wall and the fitting groove of the tensioning wheel is inserted from the outside of the side wall on one side of the tensioning wheel fitting groove. Thus, a fastener that is screwed into the side wall on the other side of the fitting groove of the tension wheel is provided.
[0015]
  Further, in the footboard chain tensioning device of the passenger conveyor according to the present invention, a number of the footboards of the passenger conveyor are connected to each other and configured endlessly. A tension groove that is recessed in the fitting frame, is provided at the end of the main frame and is displaceable in the longitudinal direction of the main frame, the treadle chain is wound around to apply tension to the treadle chain, and the end A plurality of rings arranged adjacent to each other form an annulus, are fitted into fitting grooves and fastened to a tension wheel by respective fasteners, and buffer pieces that support the treadle chain rollers are provided,From the outside of the side wall on one side of the tensioning wheel fitting groove, it is inserted into the buffering piece fitted in the side wall and the tensioning wheel fitting groove and screwed into the side wall on the other side of the tensioning wheel fitting groove. Fasteners are provided.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiment 1 FIG.
1 to 5 are views showing an example of an embodiment of the present invention. FIG. 1 is a side view conceptually showing a lower end portion of a main frame of an escalator. FIG. 2 is an enlarged view of a tensioned vehicle in the escalator of FIG. 3 is an enlarged view of a part A in FIG. 2, FIG. 4 is a sectional view taken along the line BB in FIG. 3 showing a state where the treadle chain is wound, and FIG. 5 is a process of replacing the cushioning material in the escalator in FIG. FIG. In addition, the passenger conveyor is comprised similarly to above-mentioned FIG.12 and FIG.13 except FIGS.
[0017]
In the figure, reference numeral 1 denotes a main frame of a passenger conveyor composed of escalators, which is constituted by a truss. Reference numeral 3 denotes a tensioning device disposed in the lower part of the main frame 1, and a tensioning wheel 4 that is detachably mounted in the longitudinal direction of the main frame 1, and a biasing mechanism that biases the tensioning wheel 4 toward the lower end of the main frame 1. 5. Reference numeral 6 denotes a tread plate chain composed of a roller chain, which connects a number of tread plates 7 in an endless manner, and is wound around the drive chain gear 2 and the tension wheel 4 to circulate in the main frame 1.
[0018]
Reference numeral 10 denotes a fitting groove provided on the rim of the tension wheel 4 and arranged in a direction along the rotation direction. Reference numeral 15 denotes a buffer piece, which is made of a viscoelastic material such as rubber, and has end portions arranged adjacent to each other. The circumference is divided into a plurality of pieces, that is, three pieces to form an annular ring, and fitted. The upper surface is provided so as to protrude from the outer diameter of the tension wheel 4 by being fitted in the mating groove 10. Reference numeral 16 denotes a fastener, which is made of a countersunk screw and is arranged away from each other along the length of the buffer piece 15. The fastener 16 is inserted into the buffer piece 15 from the surface and screwed into the bottom surface of the fitting groove 10 of the tension wheel 4.
[0019]
A link plate 12 of the tread plate chain 6 is fitted with a gap formed on the side surface of the tension wheel 4 and partially overlapped with the outer diameter of the tension wheel 4. Reference numeral 13 denotes a roller of the tread plate chain 6, which is supported by the buffer piece 15 in a state of being wound around the tension wheel 4. Reference numeral 14 denotes a pin for connecting the link plate 12 of the tread plate chain 6 and the roller 13. Reference numeral 17 denotes an entrance / exit floor plate detachably provided at the lower end portion of the main frame 1, and reference numeral 18 denotes a comb plate detachably provided at an edge of the entrance / exit floor plate 17 near the longitudinal center of the main frame 1.
[0020]
In the footboard chain tensioning device of the passenger conveyor configured as described above, the footboard chain 6 in which the footboard 7 is connected endlessly is wound around the drive chain gear 2 and the tensioning wheel 4. When the driving device 8 is energized, the tread plate 7 circulates in the main frame 1 via the tread plate chain 6 and conveys passengers on the tread plate 7.
[0021]
Although not shown, a rubber soundproof piece is provided on the teeth of the drive chain gear 2 to reduce the engagement sound of the tread plate chain 6 with the roller 13. Further, the tension wheel 4 is provided with a buffer piece 15 made of rubber or the like that supports the roller 13 of the tread plate chain 6 and reduces the engagement sound between the tension wheel 4 and the roller 13. Such a structure makes the operation of the passenger conveyor quiet.
[0022]
And when replacing the deteriorated buffer piece 15 of the tension wheel 4, the work shown in FIG. 5 is performed. That is, part of the step board 7 near the lower end of the main frame 1 is removed from the step board chain 6 in step 101, and an opening is formed in the continuous row of the tread boards 7. Moreover, the boarding board 17 and the comb board 18 are removed, and the work space is provided.
[0023]
Next, in step 102, the drive device 8 is manually operated, and the opening formed by the removal tread 7 is moved to the upper end side of the main frame 1 in the tension wheel 4. And the buffer piece 15 corresponding to the non-winding part from the arrow C side shown in FIG. 1 which is the location where the step board chain 6 in the tension wheel 4 is not wound by the step 103, that is, the non-winding portion of the foot board chain 6. Then, the fastening by the fastener 16 is released and removed.
[0024]
Next, the drive device 8 is manually operated again in step 104, the tension wheel 4 is rotated, and the buffer piece 15 corresponding to the next unrolled portion is released from the fastening by the fastener 16 and removed. And the buffer piece 15 of all the numbers is removed by repeating the operation | work similar to this operation.
[0025]
Then, in step 105, new buffer pieces 15 are sequentially fitted into the fitting grooves 10 of the tension wheel 4 by the procedure completely opposite to the above-described steps 102 to 104, and the tension wheel 4 is fitted by the fastener 16. Fastened to the groove 10 and attached. Then, all the buffer pieces 15 are mounted by repeating such operations. Subsequently, the step board 7, the boarding board 17 and the comb board 18 removed in step 106 are returned to the previous state, and the work of replacing the deteriorated buffer piece 15 is completed.
[0026]
Such a replacement work of the buffer piece 15 does not require a complicated operation such as loosening the tread plate chain 6, removing one side of the tension wheel 4 shaft and lifting it up and inserting the buffer material 11. For this reason, the buffer piece 15 of the tension wheel 4 around which the endless tread board chain 6 is wound can be easily replaced, the working time can be reduced, and the cost of replacing the buffer piece 15 can be reduced.
[0027]
In addition, the embodiment of FIGS. 1-5 provides the buffer piece 15 which divides | segments a circumference by three and forms the ring, and provides the buffer piece length along the longitudinal direction of the fitting groove 10 of the tension wheel 4, This is set to be shorter than the length of the portion where the treadle chain 6 of the tension vehicle 4 is not wound. However, even if the buffer piece having such a length is configured as a buffer piece that forms an annulus by dividing the circumference by other appropriate plural pieces, in the embodiment of FIGS. The effect can be obtained.
[0028]
Embodiment 2. FIG.
FIG. 6 is a view showing an example of another embodiment of the present invention, which is an enlarged view of a tensioned vehicle portion in an escalator, and is a view corresponding to the main part of FIG. Except for FIG. 6, a passenger conveyor is configured in the same manner as in FIGS. 12 and 13 described above. In the figure, the same reference numerals as in FIGS. 1 to 5 show a corresponding part, 19 is a buffer piece, made of a viscoelastic material such as rubber, the ends are arranged adjacent to each other, and a plurality of divided circumferences, That is, an annular ring is formed by four pieces, fitted into the fitting groove 10, and the upper surface is provided so as to protrude from the outer diameter of the tension wheel 4.
[0029]
Reference numeral 20 denotes an opposing end portion of the buffer pieces 19, that is, a joint. Further, θ shown in FIG. 6 is the pitch angle of each buffer piece 19 at the rotation center of the tension wheel 4, and φ shown in FIG. 6 is the pitch angle of the rollers 13 of the tread chain 6 at the rotation center of the tension wheel 4. is there.
[0030]
In the footboard chain tensioning device of the passenger conveyor configured as described above, the passenger conveyor is operated in the same manner as in the above-described embodiments of FIGS. 1 to 5, and the buffering piece 19 is provided on the tensioning vehicle 4. Therefore, although the detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 5 can be obtained also in the embodiment of FIG.
[0031]
In general, a footboard chain 6 having a constant pitch of the rollers 13 is used in the passenger conveyor. Further, the pitch angle φ of the roller 13 changes due to the thickness of the buffer piece 19 or the like. For such a situation, there is a relationship in which the total outer peripheral length of the buffer pieces 19 formed on the outer periphery of the tension wheel 4 does not become 360 ° by multiplying the pitch angle φ of the roller 13 of the tread chain 6 by any integer. Set to hold. (For example, φ = 7 °)
[0032]
Thereby, it is possible to prevent the roller 13 of the tread plate chain 6 from hitting the same position in the longitudinal direction of the buffer piece 19 by the circular movement of the tread plate chain 6. For this reason, the roller 13 always hits the same position in the longitudinal direction of the buffer piece 19, so that it is possible to prevent a problem in which wear proceeds.
[0033]
Further, the pitch angle θ of each buffer piece 19 is set so as not to be an integral multiple of the pitch angle φ of the roller 13 of the tread chain 6. For this reason, the roller 13 of the tread plate chain 6 does not simultaneously face each joint 20 between the buffer pieces 19. Therefore, when the rollers 13 of the tread plate chain 6 are fitted into all the joints 20 at the same time, it is possible to prevent occurrence of problems such as vibration in the tread plate chain 6 which is a concern.
[0034]
Embodiment 3 FIG.
FIGS. 7 to 9 are also diagrams showing an example of another embodiment of the present invention. FIG. 7 is an enlarged view of a tensioned vehicle portion in the escalator, corresponding to the main part of FIG. 1, and FIG. FIG. 9 is a plan view of FIG. 7. In addition, the passenger conveyor is comprised similarly to above-mentioned FIG.12 and FIG.13 except FIGS. In the figure, the same reference numerals as those in FIGS.
[0035]
Reference numeral 21 denotes a buffer piece, which is made of a viscoelastic material such as rubber and has end portions arranged adjacent to each other, forming a ring by a plurality of divided circumferences, and formed on the bottom surface of the fitting groove 10 of the tension wheel 4. The upper surface is provided so as to protrude from the outer diameter of the tension wheel 4. Reference numeral 22 denotes a fastener, which is a countersunk screw and is inserted into the side wall and the buffer piece 21 from the outside of the side wall of the fitting groove 10 of the tension wheel 4 and screwed into the side wall of the other side of the fitting groove 10. They are arranged away from each other along the circumference of the tension wheel 4 edge.
[0036]
In the footboard chain tensioning device of the passenger conveyor configured as described above, the passenger conveyor is operated in the same manner as in the above-described embodiments of FIGS. 1 to 5, and the buffering piece 21 is provided on the tensioning vehicle 4. Therefore, although the detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 5 can be obtained also in the embodiment of FIGS.
[0037]
Further, the buffer piece 21 can be attached and detached by operating the fastener 22 from the direction of the arrow D or E shown in FIG. For this reason, the fastener 22 can be easily operated at the time of replacement work of the buffer piece 21 that has deteriorated the tension wheel 4, and work efficiency can be improved. It should be noted that the operation in the embodiment of FIGS. 7 to 9 can be obtained even if an appropriate taper pin, split pin or the like is used instead of the fastener 22.
[0038]
Embodiment 4 FIG.
10 and 11 are also diagrams showing an example of another embodiment of the present invention. FIG. 10 is a view corresponding to FIG. 4 described above, and FIG. 11 is a side view of the buffer piece portion of FIG. In addition, the passenger conveyor is comprised similarly to above-mentioned FIG.12 and FIG.13 other than FIG.10 and FIG.11. In the figure, the same reference numerals as those in FIGS.
[0039]
23 is a recess formed by retreating from the side of the outer peripheral edge of the tension wheel 4, and 24 is a mounting bracket made of an arc-shaped piece having an L-shaped cross section, and the end portions are arranged adjacent to each other, An annular shape is formed by a plurality of divided circumferences, and one side of the L-shape is provided in the recess 23.
[0040]
Reference numeral 25 denotes a fastener, which is made of a countersunk screw and has a head embedded in one side of the L-shape fitted in the recess 23 of the mounting bracket 24, and is inserted into one side of the L-shape and screwed into the tension wheel 4. Yes. Reference numeral 26 denotes a buffer piece, which is made of a viscoelastic material such as rubber, and is adhered to the outer surface of the other side of the L-shape of the mounting bracket 24 with an adhesive so that the upper surface forms the apparent outer diameter of the tension wheel 4. 6 to support the roller 13 and reduce the engagement sound between the tension wheel 4 and the roller 13.
[0041]
In the footboard chain tensioning device of the passenger conveyor configured as described above, the passenger conveyor is operated in the same manner as in the above-described embodiments of FIGS. 1 to 5, and the buffering piece 26 is provided on the tensioning vehicle 4. Therefore, although the detailed description is omitted, the same operation as the embodiment of FIGS. 1 to 5 can be obtained also in the embodiment of FIGS.
[0042]
Further, it is not necessary to fit the buffer piece 26 in the fitting groove 10 of the tension wheel 4 when replacing the deteriorated buffer piece 21 of the tension wheel 4, and an insertion hole is provided in the buffer piece 26 to provide a fastener. 23 does not need to be inserted. And the buffer piece 21 can be attached or detached by operating the fastener 22 from the arrow D or arrow E direction shown in FIG. For this reason, it is possible to easily replace the deteriorated buffer piece 21 of the tension wheel 4 and to improve the work efficiency.
[0043]
【The invention's effect】
  In the present invention, as described above, a large number of passenger conveyor treads are connected to form an endless shape, and a tread plate chain that circulates and moves in the main frame of the passenger conveyor, and a fitting groove along the rotational direction is recessed in the rim. A tension wheel provided at the end of the main frame and displaceable in the longitudinal direction of the main frame, the treadle chain being wound around and applying tension to the treadle chain, and the end being disposed adjacent to each other A plurality of circular rings are formed, fitted into fitting grooves, each fastened to a tension wheel by a fastener, and provided with a buffer piece for supporting a treadle chain rollerThe pitch angle of each buffer piece at the rotation center of the tension wheel is set to an angle that is not an integral multiple of the pitch angle of the rollers of the treadle chain at the rotation center of the tension wheel.
[0044]
  As a result, the tensioning wheel is provided with a buffer piece to support the roller of the tread board chain, and the engagement noise between the tensioning wheel and the roller is reduced to quietly operate the passenger conveyor. In addition, when replacing the deteriorated buffer piece of the tension wheel, the buffer piece is sequentially removed from the tension wheel by the work in the non-winding portion where the treadle chain is not wound in the tension vehicle. And the buffer piece updated by the operation | work in the non-winding location of the tread board chain | strand in a tension vehicle is sequentially mounted | worn with a tension vehicle. For this reason, it is possible to easily replace the buffer piece of the tension car around which the endless treadle chain is wound, and there is an effect that the working time is reduced and the cost of replacing the buffer piece is reduced.Further, since the pitch angle of each buffer piece is set at an angle that does not become an integral multiple of the pitch angle of the roller of the tread chain, the rollers of the tread plate chain do not face each other at the joint between the buffer pieces. Therefore, there is an effect of preventing occurrence of problems such as vibration in the tread board chain when the rollers of the tread board chain are fitted into all the joints at the same time.
[0045]
  In addition, as described above, the present invention is constructed in an endless manner by connecting a large number of passenger conveyor treads, and is provided at the end of the main frame. A tension wheel that is slidably mounted in the longitudinal direction, and a treadle chain is wound around to apply tension to the treadle chain, and an end portion is adjacent to each other by an adhesive bonded to the surface of a mounting bracket made of an arc-shaped piece. A circular ring is formed by a plurality of arranged, arranged on the rim surface of the tension wheel via the back surface of the mounting bracket, and each is fastened to the tension wheel by a fastener and provided with a buffer piece for supporting the treadle chain rollerThe pitch angle of each buffer piece at the rotation center of the tension wheel is set to an angle that is not an integral multiple of the pitch angle of the rollers of the treadle chain at the rotation center of the tension wheel.
[0046]
  As a result, the tensioning wheel is provided with a buffer piece to support the roller of the tread board chain, and the engagement noise between the tensioning wheel and the roller is reduced to quietly operate the passenger conveyor. Moreover, when replacing the deteriorated buffer piece of the tensioned vehicle, the buffer pieces attached to the mounting bracket are sequentially removed from the tensioned vehicle by work in a non-winding position where the treadle chain is not wound in the tensioned vehicle. Then, the updated buffer pieces attached to the mounting bracket are sequentially attached to the tensioned vehicle by the work at the unwinding position of the treadle chain in the tensioned vehicle. For this reason, it is possible to easily replace the buffer piece of the tension car around which the endless treadle chain is wound, and there is an effect that the working time is reduced and the cost of replacing the buffer piece is reduced.Further, since the pitch angle of each buffer piece is set at an angle that does not become an integral multiple of the pitch angle of the roller of the tread chain, the rollers of the tread plate chain do not face each other at the joint between the buffer pieces. Therefore, there is an effect of preventing occurrence of problems such as vibration in the tread board chain when the rollers of the tread board chain are fitted into all the joints at the same time.
[0047]
In addition, as described above, the present invention is provided with a buffer piece that forms an annular ring by at least three.
[0048]
As a result, the tensioning wheel is provided with a buffer piece to support the roller of the tread board chain, and the engagement noise between the tensioning wheel and the roller is reduced to quietly operate the passenger conveyor. In addition, when replacing a deteriorated buffer piece of a tensioned vehicle, at least three buffer pieces that form an annular ring are sequentially arranged from the tensioned vehicle by work in a non-winding position where the treadle chain is not wound in the tensioned vehicle. The buffer pieces that are removed and renewed by the work at the non-winding part are sequentially attached to the tensioned vehicle. For this reason, it is possible to easily replace the buffer piece of the tension car around which the endless treadle chain is wound, and there is an effect that the working time is reduced and the cost of replacing the buffer piece is reduced.
[0049]
In addition, as described above, the present invention is formed on the outer circumference of the tension wheel so that a relationship that does not become 360 ° is obtained by multiplying the pitch angle of the treadle chain roller at the rotation center of the tension wheel by any integer. The total outer peripheral length of the buffer pieces to be set is set.
[0050]
As a result, the tensioning wheel is provided with a buffer piece to support the roller of the tread board chain, and the engagement noise between the tensioning wheel and the roller is reduced to quietly operate the passenger conveyor. In addition, when replacing a deteriorated buffer piece of a tensioned vehicle, the buffer piece is sequentially removed from the tensioned vehicle by work in a non-winding position where the stepboard chain is not wound in the tensioned vehicle, The buffer pieces renewed by the work at the turning points are sequentially attached to the tension vehicle. For this reason, it is possible to easily replace the buffer piece of the tension car around which the endless treadle chain is wound, and there is an effect that the working time is reduced and the cost of replacing the buffer piece is reduced.
Further, since the total length of the buffer pieces is set to a length that satisfies a relationship that does not become 360 ° by multiplying the pitch angle of the roller of the tread board chain by any integer, the length of the buffer piece is determined by the circulation movement of the tread chain. The treadle chain roller does not hit the same position in the direction. For this reason, the roller always hits the same position in the longitudinal direction of the buffer piece, and there is an effect of preventing the problem that the wear progresses.
[0051]
  Further, as described above, the present invention is inserted from the outside of the side wall on one side of the tensioning wheel fitting groove into the buffer piece fitted in the side wall and the tensioning wheel fitting groove, A fastener screwed into the side wall on the other side of the fitting groove is provided.
[0052]
  As a result, the tensioning wheel is provided with a buffer piece to support the roller of the tread board chain, and the engagement noise between the tensioning wheel and the roller is reduced to quietly operate the passenger conveyor. In addition, when replacing a deteriorated buffer piece of a tensioned vehicle, the buffer piece is sequentially removed from the tensioned vehicle by work in a non-winding position where the stepboard chain is not wound in the tensioned vehicle, The buffer pieces renewed by the work at the turn points are sequentially attached to the tensioned vehicle. For this reason, it is possible to easily replace the buffer piece of the tension car around which the endless treadle chain is wound, and there is an effect that the working time is reduced and the cost of replacing the buffer piece is reduced.
In addition, since the buffer piece can be attached and detached by operating the fastener from the side of the edge of the tension wheel, the fastener can be easily operated during the replacement work of the buffer piece deteriorated in the tension wheel, thereby improving the work efficiency. effective.
[0053]
  In addition, as described above, the present invention has an endless structure in which a large number of passenger conveyor treads are connected, and the tread board chain that circulates and moves in the main frame of the passenger conveyor, and the fitting groove along the rotational direction is recessed in the rim. A tension wheel that is installed at the end of the main frame and is displaceable in the longitudinal direction of the main frame, and the treadle chain is wound around to apply tension to the treadle chain, and the end is arranged adjacent to each other Forming a ring with a plurality of formed, each fitted with a fitting groove, fastened to a tension wheel with a fastener, and provided with a buffer piece for supporting the roller of the tread plate chain,From the outside of the side wall on one side of the tensioning wheel fitting groove, it is inserted into the buffering piece fitted in the side wall and the tensioning wheel fitting groove and screwed into the side wall on the other side of the tensioning wheel fitting groove. Provided with a fastener.
[0054]
As a result, the tensioning wheel is provided with a buffer piece to support the roller of the tread board chain, and the engagement noise between the tensioning wheel and the roller is reduced to quietly operate the passenger conveyor. In addition, when replacing a deteriorated buffer piece of a tensioned vehicle, the buffer piece is sequentially removed from the tensioned vehicle by work in a non-winding position where the stepboard chain is not wound in the tensioned vehicle, The buffer pieces renewed by the work at the turn points are sequentially attached to the tensioned vehicle. For this reason, it is possible to easily replace the buffer piece of the tension car around which the endless treadle chain is wound, and there is an effect that the working time is reduced and the cost of replacing the buffer piece is reduced.
In addition, since the buffer piece can be attached and detached by operating the fastener from the side of the edge of the tension wheel, the fastener can be easily operated during the replacement work of the buffer piece deteriorated in the tension wheel, thereby improving the work efficiency. effective.
[Brief description of the drawings]
FIG. 1 is a side view conceptually showing a lower end portion of a main frame of an escalator, showing Embodiment 1 of the present invention.
FIG. 2 is an enlarged view of a tensioned vehicle in the escalator shown in FIG.
FIG. 3 is an enlarged view of a part A in FIG. 2;
4 is a cross-sectional view taken along the line BB of FIG. 3 showing a state in which a tread board chain is wound.
FIG. 5 is a process diagram of buffer material replacement work in the escalator of FIG. 1;
6 is an enlarged view of a tensioned vehicle portion in an escalator showing a second embodiment of the present invention, corresponding to the main part of FIG. 1 described above. FIG.
7 is a diagram showing a third embodiment of the present invention, which is an enlarged view of a tensioned vehicle portion in an escalator, and is a diagram corresponding to the main part of FIG. 1 described above. FIG.
8 is a cross-sectional view of the main part of FIG. 7, corresponding to FIG. 4 described above.
FIG. 9 is a plan view of FIG.
FIG. 10 is a diagram showing a fourth embodiment of the present invention and corresponding to FIG. 4 described above.
11 is a side view of the buffer piece portion of FIG. 10;
FIG. 12 is a side view conceptually showing an escalator, showing a tread board chain tension device of a conventional passenger conveyor.
13 is an enlarged cross-sectional view of a tension wheel edge portion of the escalator in FIG. 12;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main frame, 4 tension wheel, 6 tread board chain, 7 tread board, 10 fitting groove, 13 roller, 15 buffer piece, 16 fastener, 19 buffer piece, 21 buffer piece, 22 fastener, 24 mounting bracket, 25 fastener , 26 Buffer piece, θ Pitch angle of the buffer piece at the rotation center of the tension vehicle, φ Pitch angle of the roller of the treadle chain at the rotation center of the tension vehicle.

Claims

A large number of passenger conveyor treads are connected to form an endless shape, a tread plate chain that circulates and moves in the main frame of the passenger conveyor, a fitting groove along the rotational direction is recessed in the rim, and the end of the main frame is A tension wheel provided to be displaceable in the longitudinal direction of the main frame, the treadle chain being wound around and applying tension to the treadle chain, and a plurality of ends arranged adjacent to each other. A buffer piece that forms a ring, is fitted in the fitting groove, is fastened to the tension wheel by a fastener, and supports a roller of the tread plate chain, and each of the shock absorbers at the center of rotation of the tension wheel A footboard chain tensioning device for a passenger conveyor, wherein the pitch angle of the piece is set to an angle that is not an integral multiple of the pitch angle of the rollers of the footboard chain at the center of rotation of the tensioner.

A large number of passenger conveyor treads are connected and configured endlessly. A tread chain that circulates in the main frame of the passenger conveyor, and is provided at the end of the main frame so that it can be displaced in the longitudinal direction of the main frame. A tension wheel on which the treadle chain is wound to apply tension to the treadle chain, and a plurality of pieces attached to the surface of the mounting bracket made of an arc-shaped piece by an adhesive and arranged adjacent to each other. Forming a ring, arranged on the rim surface of the tension wheel via the back surface of the mounting bracket, and each provided with a buffer piece fastened to the tension wheel by a fastener and supporting the roller of the tread plate chain, Passenger conveyor characterized in that the pitch angle of each buffer piece at the center of rotation of the tension wheel is set to an angle that is not an integral multiple of the pitch angle of the rollers of the treadle chain at the center of rotation of the tension vehicle. Treads chain tensioning device.

The treadle chain tensioning device for a passenger conveyor according to any one of claims 1 and 2, wherein at least three buffer pieces form a ring.

A length that establishes a relationship that does not become 360 ° when the total outer peripheral length of the buffer pieces formed on the outer periphery of the tension wheel is multiplied by any integer multiplied by the pitch angle of the treadle chain roller at the rotation center of the tension wheel. The footboard chain tensioning device for a passenger conveyor according to any one of claims 1 and 2, characterized in that the treadle chain tensioning device is set.

The fastener was inserted into the side wall and the buffer piece fitted in the fitting groove from the outside of the side wall on one side of the tensioning wheel, and screwed into the other side wall of the fitting groove. The footboard chain tensioning device for a passenger conveyor according to any one of claims 1 and 3 to 4, wherein the treadboard chain tensioning device is used.