JPWO2003074409A1 - Elevator equipment - Google Patents

Elevator equipment Download PDF

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Publication number
JPWO2003074409A1
JPWO2003074409A1 JP2003572889A JP2003572889A JPWO2003074409A1 JP WO2003074409 A1 JPWO2003074409 A1 JP WO2003074409A1 JP 2003572889 A JP2003572889 A JP 2003572889A JP 2003572889 A JP2003572889 A JP 2003572889A JP WO2003074409 A1 JPWO2003074409 A1 JP WO2003074409A1
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Prior art keywords
main rope
car
hoistway
counterweight
side return
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JP4110096B2 (en
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本田　武信
武信 本田
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B7/00—Other common features of elevators
    • B66B7/06—Arrangements of ropes or cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0035—Arrangement of driving gear, e.g. location or support
    • B66B11/0045—Arrangement of driving gear, e.g. location or support in the hoistway
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/0065—Roping
    • B66B11/008—Roping with hoisting rope or cable operated by frictional engagement with a winding drum or sheave

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Lift-Guide Devices, And Elevator Ropes And Cables (AREA)

Abstract

エレベータ装置においては、第１及び第２の主索接続部がかごに設けられている。昇降路内の上部で第１及び第２の主索接続部の上方には、第１及び第２のかご側返し車が配置されている。主索群は、第１のかご側返し車に巻き掛けられ第１の主索接続部に接続された第１の主索と、第２のかご側返し車に巻き掛けられ第２の主索接続部に接続された第２の主索とを有している。駆動装置、及び第１及び第２のかご側返し車は、垂直投影面内でかごと重なるように、かごの上方に配置されている。In the elevator apparatus, first and second main rope connection portions are provided in the car. First and second car-side return wheels are arranged above the first and second main rope connection portions in the upper part of the hoistway. The main rope group is wound around the first car side return wheel and is connected to the first main rope connection portion, and the second main rope is wound around the second car side return wheel. And a second main rope connected to the connection portion. The driving device and the first and second car-side return wheels are arranged above the car so as to overlap the car in the vertical projection plane.

Description

技術分野
この発明は、昇降路内の上部に駆動装置が配置されているエレベータ装置に関するものである。
背景技術
従来の機械室レスエレベータでは、駆動装置や制御盤が例えば昇降路壁とかごとの間に配置されている。また、例えば特開平１０−１３９３２１号公報に示された機械室レスエレベータでは、薄形の駆動装置が昇降路内の上部に配置されている。
しかし、上記のような従来の機械室レスエレベータでは、主索が巻き掛けられる各種綱車の径が大きく、また複数本の主索を配置するために駆動装置と各種綱車との距離を大きくとったりする必要があるため、昇降路の平面積が大きくなっていた。また、オーバヘッド寸法を抑えるため、かごの下部に動滑車を取り付けて２対１ローピングにしたりしなければならず、構成が複雑化してコストが高くなるとともに、昇降路下部の寸法が大きくなってしまう。従って、昇降路をさらにコンパクトに構成することが求められている。
発明の開示
この発明は、上記のような課題を解決するためになされたものであり、構成を簡単にするとともに、昇降路をコンパクトにすることができるエレベータ装置を得ることを目的とする。
この発明によるエレベータ装置は、昇降路、昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として駆動装置本体により回転される駆動シーブとを有する駆動装置、駆動シーブに巻き掛けられている主索群、及び主索群により昇降路内に吊り下げられ、駆動装置により昇降路内を昇降されるかご及び釣合重りを備え、かごには、垂直投影面内でかごを挟むように第１及び第２の主索接続部が設けられており、昇降路内の上部で第１及び第２の主索接続部の上方には、第１及び第２のかご側返し車が配置されており、主索群は、第１のかご側返し車に巻き掛けられ第１の主索接続部に接続された第１の主索と、第２のかご側返し車に巻き掛けられ第２の主索接続部に接続された第２の主索とを有しており、駆動装置、及び第１及び第２のかご側返し車は、垂直投影面内でかごと重なるように、かごの上方に配置されている。
また、この発明によるエレベータ装置は、昇降路、昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として駆動装置本体により回転される駆動シーブとを有する駆動装置、駆動シーブに巻き掛けられている主索群、及び主索群により昇降路内に吊り下げられ、駆動装置により昇降路内を昇降されるかご及び釣合重りを備え、昇降路内の上部で釣合重りの上方には、第１及び第２の釣合重り側返し車が配置されており、主索群は、第１の釣合重り側返し車に巻き掛けられ釣合重りに接続された第１の主索と、第２の釣合重り側返し車に巻き掛けられ第２の主索接続部に接続された第２の主索とを有しており、第１及び第２の釣合重り側返し車の設置高さは、駆動シーブから引き出される第１及び第２の主索の高さに応じて互いに異なっている。
さらに、昇降路、昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として駆動装置本体により回転される駆動シーブとを有する駆動装置、駆動シーブに巻き掛けられている主索群、及び主索群により昇降路内に吊り下げられ、駆動装置により昇降路内を昇降されるかご及び釣合重りを備え、昇降路内の上部で釣合重りの上方には、第１及び第２の釣合重り側返し車が配置されており、主索群は、第１の釣合重り側返し車に巻き掛けられ釣合重りに接続された第１の主索と、第２の釣合重り側返し車に巻き掛けられ第２の主索接続部に接続された第２の主索とを有しており、第１及び第２の釣合重り側返し車の径は、駆動シーブから引き出される第１及び第２の主索の高さに応じて互いに異なっている。
発明を実施するための最良の形態
以下、この発明の好適な実施の形態について図面を参照して説明する。
実施の形態１．
図１はこの発明の実施の形態１によるエレベータ装置を示す正面図、図２は図１の昇降路上部の構造体を示す平面図、図３は図１のエレベータ装置の要部を示す平面図である。
図において、昇降路１内には、一対のかごガイドレール２と一対の釣合重りガイドレール３とが設置されている。かご４は、かごガイドレール２に案内されて昇降路１内を昇降される。かご４は、かご枠５と、かご枠５に支持されたかご室６とを有している。かご枠５は、一対の縦枠７と、縦枠７の下端部間に固定され、かご室６を支持する下枠８と、縦枠７の上端部間に固定されている上枠９とを有している。
下枠８には、第１及び第２の主索接続部１１，１２が設けられている。第１及び第２の主索接続部１１，１２は、かご４の重心に対して対称に配置されている。即ち、図３に示すように、第１の主索接続部１１は、一対のかごガイドレール２の中心を結ぶ直線Ｃよりも後ろに、第２の主索接続部１２は、直線Ｃよりも前に配置されている。
釣合重り１３は、釣合重りガイドレール３に案内されて昇降路１内を昇降される。また、釣合重り１３は、乗場側から見てかご４の後方に配置されている。
昇降路１内の上部には、取付枠１４が配置されている。取付枠１４は、かごガイドレール２及び釣合重りガイドレール３の上端部に固定されている。取付枠１４には、かご４及び釣合重り１３を昇降させる駆動装置（巻上機）１５が搭載されている。
駆動装置１５は、駆動装置本体１６と、駆動装置本体１６により回転される駆動シーブ１７とを有している。さらに、駆動装置１５は、駆動シーブ１７の回転軸が垂直に延びるように水平に配置されている。駆動装置本体１６は、軸方向寸法が径よりも小さい薄形モータを有している。
取付枠１４には、第１及び第２のかご側返し車１８，１９、釣合重り側返し車２０、及び方向転換プーリ２１が搭載されている。第１のかご側返し車１８は、その回転軸がかご４の奥行き方向（図３の上下方向）に沿って水平に延びるように、第１の主索接続部１１の上方に配置されている。第２のかご側返し車１９は、その回転軸がかご４の奥行き方向（図３の上下方向）に沿って水平に延びるように、第２の主索接続部１２の上方に配置されている。
釣合重り側返し車２０は、その回転軸が水平に延びるように、釣合重り１３の上方に配置されている。また、駆動装置１５、第１及び第２のかご側返し車１８，１９、釣合重り側返し車２０、及び方向転換プーリ２１は、垂直投影面内でかご４と重なるように、かご４の上方に配置されている。
駆動シーブ１７には、かご４及び釣合重り１３を昇降路１内に吊り下げる主索群２２が巻き掛けられている。主索群２２は、複数本の第１の主索２３と、複数本の第２の主索２４とを有している。ここでは、第１の主索２３の本数と第２の主索２４の本数とが同じである。
また、第１及び第２の主索２３，２４としては、例えば樹脂被覆を有する柔軟性の高い複合材料ロープが使用される。これにより、駆動シーブ１７、第１及び第２のかご側返し車１８，１９、釣合重り側返し車２０、及び方向転換プーリ２１の径を小さくすることができる。
第１の主索２３は、第１の主索接続部１１に接続された第１の端部と、釣合重り１３の上部に接続された第２の端部とを有している。第２の主索２４は、第２の主索接続部１２に接続された第１の端部と、釣合重り１３の上部に接続された第２の端部とを有している。
第１の主索２３は、第１の端部から、第１のかご側返し車１８、駆動シーブ１７、及び釣合重り側返し車２０の順に巻き掛けられ、第２の端部に至っている。第２の主索２４は、第１の端部から、第２のかご側返し車１９、方向転換プーリ２１、駆動シーブ１７、及び釣合重り側返し車２０の順に巻き掛けられ、第２の端部に至っている。
即ち、釣合重り１３に接続された第１の主索２３と第２の主索２４は、駆動シーブ２４で２方向に分岐されてかご４に接続されている。
また、取付枠１４には、駆動装置１５等の機器を制御する制御盤２５が搭載されている。駆動装置１５、第１及び第２のかご側返し車１８，１９、釣合重り側返し車２０、方向転換プーリ２１及び制御盤２５は、共通の取付枠１４に搭載されてユニット化されている。
方向転換プーリ２１は、略水平に配置されているが、第２の主索２４の進入角度ができるだけ小さくなるように、方向転換プーリ２１の回転軸は、垂直に対して若干傾けられている。
このようなエレベータ装置では、主索群２２を第１及び第２の主索２３，２４に振り分け、かご４の重心に対して対称に配置された第１及び第２の主索接続部１１，１２で吊り下げるようにしたので、かご４をその重心で安定して吊り下げることができる。これにより、偏荷重による反力がかごガイドレール２に作用するのが防止され、乗り心地を向上させることができる。
また、第１及び第２の主索接続部１１，１２はかご４の下枠８に配置されているため、かご４の上部には、主索群２２の接続部を設ける必要がない。従って、かご４の上部の寸法を小さくすることができ、昇降路１内の上部に駆動装置１５を配置しつつ、昇降路１の高さ寸法の増大を抑えることができる。
さらに、１：１ローピングによりかご４を直接吊り下げているので、構成が簡素化されるとともに、駆動装置１５の回転速度を低く抑えることができる。このため、昇降路１内に駆動装置１５を配置しても、低振動・低騒音で静粛なエレベータ装置を提供できる。
さらにまた、駆動シーブ１７から第１のかご側返し車１８までの距離、駆動シーブ１７から方向転換プーリ２１までの距離、及び方向転換プーリ２１から第２のかご側返し車１９までの距離が十分に確保されているので、駆動シーブ１７の偏摩耗を防止できるとともに、主索群２２の寿命を延ばすことができ、保守費用を軽減できる。
また、駆動装置１５、第１及び第２のかご側返し車１８，１９、釣合重り側返し車２０、及び方向転換プーリ２１は、垂直投影面内でかご４と重なるように、かご４の上方に配置されているので、昇降路１の平面積を小さくして、昇降路１をコンパクトにすることができる。
さらに、第１及び第２のかご側返し車１８，１９が一対のかごガイドレール２を結ぶ直線Ｃの両側に互いに平行に配置されているので、取付枠１４やガイドレール２，３に荷重を均等にかけることができ、構造を安定させることができる。
さらにまた、第１及び第２のかご側返し車１８，１９は、それらの回転軸がかご４の奥行き方向（図３の上下方向）に沿って水平に延びるように配置されているので、構成を簡単にし、組立を容易にすることができる。
実施の形態２．
次に、図４はこの発明の実施の形態２によるエレベータ装置の要部を示す平面図である。図において、かご４は、互いに対向する第１及び第２の側面４ａ，４ｂを有している。また、かご４は、互いに対角をなす第１及び第２の角部４ｃ，４ｄを有している。
昇降路１内には、かご４の昇降を案内する第１及び第２のかごガイドレール３１，３２が設置されている。第１のかごガイドレール３１は、第１の角部４ｃに対向して、昇降路１の第１の昇降路壁１ａに固定されている。第２のかごガイドレール３２は、第２の角部４ｄに対向して、第１の昇降路壁１ａに対向する第２の昇降路壁１ｂに固定されている。従って、かご４のかごガイドレール３１，３２との係合部（ガイドシュー）は、第１及び第２の角部４ｃ，４ｄに配置されている。
かご４の下枠８には、第１及び第２の主索接続部３３，３４が設けられている。第１及び第２の主索接続部３３，３４は、かご４の重心に対して対称に配置されている。即ち、第１の主索接続部３３は、第１の角部４ｃに配置され、第２の主索接続部３４は、第２の角部４ｄに配置されている。
昇降路１内の上部に配置された取付枠１４（図１）には、第１及び第２のかご側返し車３５，３６、第１及び第２の釣合重り側返し車３７，３８、及び方向転換プーリ３９が搭載されている。第１のかご側返し車３５は、その回転軸が水平に延びるように、第１の主索接続部３３の上方に配置されている。第２のかご側返し車３６は、その回転軸が水平に延びるように、第２の主索接続部３４の上方に配置されている。
第１及び第２の釣合重り側返し車３７，３８は、それらの回転軸が水平に延びるように、釣合重り１３の上方に配置されている。また、駆動装置１５、第１及び第２のかご側返し車３５，３６、第１及び第２の釣合重り側返し車３７，３８、及び方向転換プーリ３９は、垂直投影面内でかご４と重なるように、かご４の上方に配置されている。
駆動シーブ１７には、かご４及び釣合重り１３を昇降路１内に吊り下げる主索群２２が巻き掛けられている。主索群２２は、複数本の第１の主索２３と、複数本の第２の主索２４とを有している。ここでは、第１の主索２３の本数と第２の主索２４の本数とが同じである。
第１の主索２３は、第１の主索接続部３３に接続された第１の端部と、釣合重り１３の上部に接続された第２の端部とを有している。第２の主索２４は、第２の主索接続部３４に接続された第１の端部と、釣合重り１３の上部に接続された第２の端部とを有している。
第１の主索２３は、第１の端部から、第１のかご側返し車３５、駆動シーブ１７、及び第１の釣合重り側返し車３７の順に巻き掛けられ、第２の端部に至っている。第２の主索２４は、第１の端部から、第２のかご側返し車３６、方向転換プーリ３９、駆動シーブ１７、及び第２の釣合重り側返し車３８の順に巻き掛けられ、第２の端部に至っている。
方向転換プーリ３９は、略水平に配置されているが、第２の主索２４の進入角度ができるだけ小さくなるように、方向転換プーリ３９の回転軸は、垂直に対して若干傾けられている。
次に、図５は図４の第１及び第２の釣合重り側返し車３７，３８を示す正面図である。第１及び第２の釣合重り側返し車３７，３８の設置高さは、駆動シーブ１７から引き出される第１及び第２の主索２３，２４の高さに応じて互いに異なっている。
このようなエレベータ装置では、主索群２２を第１及び第２の主索２３，２４に振り分け、かご４の重心に対して対称に配置された第１及び第２の主索接続部３３，３４で吊り下げるようにしたので、かご４をその重心で安定して吊り下げることができる。これにより、偏荷重による反力がかごガイドレール３１，３２に作用するのが防止され、乗り心地を向上させることができる。
また、第１及び第２の主索接続部３３，３４はかご４の下枠８に配置されているため、かご４の上部には、主索群２２の接続部を設ける必要がない。従って、かご４の上部の寸法を小さくすることができ、昇降路１内の上部に駆動装置１５を配置しつつ、昇降路１の高さ寸法の増大を抑えることができる。
さらに、１：１ローピングによりかご４を直接吊り下げているので、構成が簡素化されるとともに、駆動装置１５の回転速度を低く抑えることができる。このため、昇降路１内に駆動装置１５を配置しても、低振動・低騒音で静粛なエレベータ装置を提供できる。
さらにまた、駆動装置１５、第１及び第２のかご側返し車３５，３６、第１及び第２の釣合重り側返し車３７，３８、及び方向転換プーリ３９は、垂直投影面内でかご４と重なるように、かご４の上方に配置されているので、昇降路１の平面積を小さくして、昇降路１をコンパクトにすることができる。
また、第１の主索接続部３３を第１の角部４ｃに配置し、第２の主索接続部３４を第２の角部４ｄに配置したので、第１及び第２の主索接続部３３，３４をかご４の外装寸法内に配置することができ、昇降路１の平面積を小さくすることができる。同様に、かご４のかごガイドレール３１，３２との係合部も第１及び第２の角部４ｃに配置されているので、係合部がかご４から突出せず、昇降路１の平面積を小さくすることができる。
さらにまた、第１及び第２の釣合重り側返し車３７，３８の設置高さは、駆動シーブ１７から引き出される第１及び第２の主索２３，２４の高さに応じて互いに異なっているので、駆動シーブ１７への主索２３，２４の進入角度を小さくすることができ、駆動シーブ１７の偏摩耗や主索２３，２４の摩耗を防止することができる。
ここで、第１及び第２の釣合重り側返し車３７，３８の高さの差は、主索２３，２４が１本ずつであれば、主索２３，２４の中心間寸法のままとすればよい。また、主索２３，２４が２本ずつであれば、互いに隣接する主索２３，２４の中心間寸法の２倍とすればよい。つまり、複数本の主索の進入角度の最大値をできるだけ小さくすればよい。さらに、各シーブ１７，３５〜３９への主索２３，２４の進入角度は、１．５度以内に設定されるのが望ましい。
なお、実施の形態２では２個の釣合重り側返し車３７，３８を用いたが、３個以上としてもよい。
実施の形態３．
次に、図６はこの発明の実施の形態３によるエレベータ装置の要部を示す平面図である。図において、釣合重り１３は、かご４の第１の側面４ａに対向するように、かご４の側方に配置されている。また、実施の形態２と逆に、第２の角部４ｄに第１の主索接続部３３が配置され、第１の角部４ｃに第２の主索接続部３４が配置されている。
第１のかご側返し車３５は、第１の主索接続部３３の上方に配置されている。第２のかご側返し車３６は、第２の主索接続部３４の上方に配置されている。釣合重り１３の上方には、第１及び第２の釣合重り側返し車４１，４２が配置されている。
また、駆動装置１５、第１及び第２のかご側返し車３５，３６、第１及び第２の釣合重り側返し車４１，４２、及び方向転換プーリ３９は、垂直投影面内でかご４と重なるように、かご４の上方に配置されている。
図７は図６の第１及び第２の釣合重り側返し車４１，４２の断面図である。第１及び第２の釣合重り側返し車４１，４２は、水平に配置された共通の回転軸４３を中心として、それぞれ独立して回転される。第１及び第２の釣合重り側返し車４１，４２の径は、駆動シーブ１７から引き出される第１及び第２の主索２３，２４の高さに応じて互いに異なっている。
このように、釣合重り１３がかご４の側方に配置されるエレベータ装置であっても、主索群２２を第１及び第２の主索２３，２４に振り分けることにより、実施の形態２と同様の効果を得ることができる。
また、第１及び第２の釣合重り側返し車４１，４２の径は、駆動シーブ１７から引き出される第１及び第２の主索２３，２４の高さに応じて互いに異なっているので、主索２３，２４の駆動シーブ１７への進入角度を小さくすることができる。さらに、共通の回転軸４３を用いることができ、構成を簡素化することができる。
なお、実施の形態３では２個の釣合重り側返し車４１，４２を用いたが、３個以上としてもよい。
【図面の簡単な説明】
図１はこの発明の実施の形態１によるエレベータ装置を示す正面図、
図２は図１の昇降路上部の構造体を示す平面図、
図３は図１のエレベータ装置の要部を示す平面図、
図４はこの発明の実施の形態２によるエレベータ装置の要部を示す平面図、
図５は図４の第１及び第２の釣合重り側返し車を示す正面図、
図６はこの発明の実施の形態３によるエレベータ装置の要部を示す平面図、
図７は図６の第１及び第２の釣合重り側返し車の断面図である。TECHNICAL FIELD The present invention relates to an elevator apparatus in which a drive device is disposed at an upper portion in a hoistway.
BACKGROUND ART In a conventional machine room-less elevator, a drive device and a control panel are disposed between a hoistway wall and a car, for example. Further, in a machine room-less elevator disclosed in, for example, Japanese Patent Application Laid-Open No. 10-139321, a thin driving device is disposed at an upper portion in a hoistway.
However, in the conventional machine room-less elevator as described above, the diameter of various sheaves around which the main rope is wound is large, and the distance between the driving device and the various sheaves is increased in order to arrange a plurality of main ropes. Because it is necessary to take, the flat area of the hoistway was large. In addition, in order to reduce the overhead dimension, it is necessary to attach a moving pulley to the lower part of the car and perform two-to-one roping, which makes the configuration complicated and expensive, and increases the dimension of the lower part of the hoistway. . Therefore, it is required to make the hoistway more compact.
DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an elevator apparatus that can simplify the configuration and make the hoistway compact.
An elevator apparatus according to the present invention includes a hoistway, an upper part of the hoistway, and a drive device having a drive device main body and a drive sheave that is rotated by the drive device main body about a rotation axis extending in the vertical direction. A main rope group wound around the drive sheave, and a car that is suspended in the hoistway by the main rope group and raised and lowered in the hoistway by the drive device and a counterweight, the car has a vertical projection plane First and second main rope connection portions are provided so as to sandwich the car inside, and the first and second main rope connection portions are located above the first and second main rope connection portions in the upper part of the hoistway. A car-side return wheel is arranged, and the main rope group is wound around the first car-side return wheel and connected to the first main rope connection portion and the second car-side return wheel. A second main rope that is wound around the vehicle and connected to the second main rope connection portion. Device, and the first and second car side return pulley is to overlap with the car in a vertical projection plane, it is disposed above the cage.
In addition, an elevator apparatus according to the present invention is disposed in an upper part of a hoistway and a hoistway, and has a driving device main body and a driving sheave that is rotated by the driving device main body about a rotating shaft extending along a vertical direction. Device, a main rope group wound around the drive sheave, and a car and a counterweight suspended in the hoistway by the main rope group, and lifted and lowered in the hoistway by the drive apparatus, and an upper part in the hoistway The first and second counterweight side return wheels are arranged above the counterweight, and the main rope group is wound around the first counterweight side return wheel and connected to the counterweight. And a second main rope that is wound around the second counterweight-side return wheel and connected to the second main rope connecting portion, and the first and second The installation height of the counterweight side return wheel of the first and second main ropes drawn from the drive sheave They are different from each other according to the.
Further, the hoistway is disposed on the hoistway and in the upper part of the hoistway, and has a driving device main body and a driving sheave that is rotated by the driving device main body about a rotation axis extending in the vertical direction, and is wound around the driving sheave. A main rope group, and a car that is suspended in the hoistway by the main rope group and lifted in the hoistway by the drive unit and a counterweight, and above the counterweight in the upper part of the hoistway The first and second counterweight-side return wheels are arranged, and the main rope group is wound around the first counterweight-side return wheel and connected to the counterweight. And a second main rope wound around the second counterweight side return wheel and connected to the second main rope connection portion, and the first and second counterweight side return wheels. Are different from each other in accordance with the heights of the first and second main ropes drawn from the drive sheave.
BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention, FIG. 2 is a plan view showing a structure at the upper part of the hoistway of FIG. 1, and FIG. 3 is a plan view showing a main part of the elevator apparatus of FIG. It is.
In the figure, a pair of car guide rails 2 and a pair of counterweight guide rails 3 are installed in a hoistway 1. The car 4 is raised and lowered in the hoistway 1 while being guided by the car guide rail 2. The car 4 has a car frame 5 and a car room 6 supported by the car frame 5. The car frame 5 is fixed between a pair of vertical frames 7, a lower end portion of the vertical frame 7, a lower frame 8 that supports the car chamber 6, and an upper frame 9 that is fixed between the upper end portions of the vertical frame 7. have.
The lower frame 8 is provided with first and second main rope connection portions 11 and 12. The first and second main rope connection portions 11 and 12 are disposed symmetrically with respect to the center of gravity of the car 4. That is, as shown in FIG. 3, the first main rope connection portion 11 is behind the straight line C connecting the centers of the pair of car guide rails 2, and the second main rope connection portion 12 is more than the straight line C. Placed in front.
The counterweight 13 is raised and lowered in the hoistway 1 while being guided by the counterweight guide rail 3. Further, the counterweight 13 is arranged behind the car 4 as viewed from the landing side.
A mounting frame 14 is disposed in the upper part of the hoistway 1. The mounting frame 14 is fixed to the upper ends of the car guide rail 2 and the counterweight guide rail 3. A driving device (hoisting machine) 15 that raises and lowers the car 4 and the counterweight 13 is mounted on the mounting frame 14.
The drive device 15 includes a drive device body 16 and a drive sheave 17 that is rotated by the drive device body 16. Furthermore, the drive device 15 is horizontally arranged so that the rotation shaft of the drive sheave 17 extends vertically. The drive device main body 16 has a thin motor whose axial dimension is smaller than the diameter.
First and second car-side return wheels 18 and 19, a counterweight-side return wheel 20, and a direction changing pulley 21 are mounted on the mounting frame 14. The first car-side return wheel 18 is disposed above the first main rope connection portion 11 so that the rotation shaft thereof extends horizontally along the depth direction of the car 4 (the vertical direction in FIG. 3). . The second car-side return wheel 19 is disposed above the second main rope connection portion 12 so that the rotation shaft thereof extends horizontally along the depth direction of the car 4 (the vertical direction in FIG. 3). .
The counterweight-side return wheel 20 is disposed above the counterweight 13 so that the rotation shaft thereof extends horizontally. Further, the driving device 15, the first and second car-side return wheels 18 and 19, the counterweight-side return wheel 20, and the direction change pulley 21 are arranged so that the car 4 overlaps the car 4 in the vertical projection plane. It is arranged above.
A main rope group 22 for suspending the car 4 and the counterweight 13 in the hoistway 1 is wound around the drive sheave 17. The main rope group 22 has a plurality of first main ropes 23 and a plurality of second main ropes 24. Here, the number of first main ropes 23 and the number of second main ropes 24 are the same.
Moreover, as the 1st and 2nd main ropes 23 and 24, the composite material rope with high flexibility which has resin coating is used, for example. As a result, the diameters of the drive sheave 17, the first and second car-side return wheels 18, 19, the counterweight-side return wheel 20, and the direction change pulley 21 can be reduced.
The first main rope 23 has a first end portion connected to the first main rope connection portion 11 and a second end portion connected to the upper portion of the counterweight 13. The second main rope 24 has a first end portion connected to the second main rope connection portion 12 and a second end portion connected to the upper portion of the counterweight 13.
The first main rope 23 is wound around the first car side return wheel 18, the drive sheave 17, and the counterweight side return wheel 20 in this order from the first end portion to the second end portion. . The second main rope 24 is wound from the first end portion in the order of the second car side return wheel 19, the direction change pulley 21, the drive sheave 17, and the counterweight side return wheel 20. It reaches the end.
That is, the first main rope 23 and the second main rope 24 connected to the counterweight 13 are branched in two directions by the drive sheave 24 and connected to the car 4.
In addition, a control panel 25 that controls devices such as the driving device 15 is mounted on the mounting frame 14. The drive device 15, the first and second car side return wheels 18 and 19, the counterweight side return wheel 20, the direction change pulley 21 and the control panel 25 are mounted on the common mounting frame 14 and unitized. .
Although the direction change pulley 21 is disposed substantially horizontally, the rotation axis of the direction change pulley 21 is slightly inclined with respect to the vertical so that the entry angle of the second main rope 24 is as small as possible.
In such an elevator apparatus, the main rope group 22 is distributed to the first and second main ropes 23, 24, and the first and second main rope connection portions 11, which are arranged symmetrically with respect to the center of gravity of the car 4. The car 4 can be stably suspended at the center of gravity. Thereby, it is possible to prevent the reaction force due to the unbalanced load from acting on the car guide rail 2, and to improve riding comfort.
In addition, since the first and second main rope connection portions 11 and 12 are disposed in the lower frame 8 of the car 4, it is not necessary to provide a connection portion for the main rope group 22 on the upper portion of the car 4. Therefore, the dimension of the upper part of the car 4 can be reduced, and the increase in the height dimension of the hoistway 1 can be suppressed while the driving device 15 is disposed in the upper part of the hoistway 1.
Furthermore, since the car 4 is directly suspended by 1: 1 roping, the configuration is simplified and the rotational speed of the driving device 15 can be kept low. For this reason, even if it arrange | positions the drive device 15 in the hoistway 1, a quiet elevator apparatus with a low vibration and a low noise can be provided.
Furthermore, the distance from the drive sheave 17 to the first car side return wheel 18, the distance from the drive sheave 17 to the direction change pulley 21, and the distance from the direction change pulley 21 to the second car side return wheel 19 are sufficient. Therefore, uneven wear of the drive sheave 17 can be prevented, the life of the main rope group 22 can be extended, and maintenance costs can be reduced.
Further, the driving device 15, the first and second car-side return wheels 18 and 19, the counterweight-side return wheel 20, and the direction change pulley 21 are arranged so that the car 4 overlaps the car 4 in the vertical projection plane. Since it arrange | positions upwards, the plane area of the hoistway 1 can be made small and the hoistway 1 can be made compact.
Further, since the first and second car side return wheels 18 and 19 are arranged in parallel to each other on both sides of the straight line C connecting the pair of car guide rails 2, a load is applied to the mounting frame 14 and the guide rails 2 and 3. It can be applied evenly and the structure can be stabilized.
Furthermore, the first and second car-side return wheels 18 and 19 are arranged so that their rotation shafts extend horizontally along the depth direction of the car 4 (the vertical direction in FIG. 3). It is possible to simplify the assembly.
Embodiment 2. FIG.
Next, FIG. 4 is a plan view showing a main part of an elevator apparatus according to Embodiment 2 of the present invention. In the figure, the car 4 has first and second side surfaces 4a and 4b facing each other. The car 4 has first and second corner portions 4c and 4d that are diagonal to each other.
In the hoistway 1, first and second car guide rails 31 and 32 that guide the raising and lowering of the car 4 are installed. The first car guide rail 31 is fixed to the first hoistway wall 1a of the hoistway 1 so as to face the first corner 4c. The second car guide rail 32 is fixed to the second hoistway wall 1b facing the first hoistway wall 1a so as to face the second corner 4d. Therefore, the engaging portions (guide shoes) of the car 4 with the car guide rails 31 and 32 are arranged at the first and second corner parts 4c and 4d.
The lower frame 8 of the car 4 is provided with first and second main rope connection portions 33 and 34. The first and second main rope connection portions 33 and 34 are arranged symmetrically with respect to the center of gravity of the car 4. That is, the 1st main rope connection part 33 is arrange | positioned at the 1st corner | angular part 4c, and the 2nd main rope connection part 34 is arrange | positioned at the 2nd corner | angular part 4d.
The mounting frame 14 (FIG. 1) disposed at the upper part in the hoistway 1 includes first and second car-side return wheels 35 and 36, first and second counterweight-side return wheels 37 and 38, A direction changing pulley 39 is mounted. The first car-side return wheel 35 is disposed above the first main rope connection portion 33 so that the rotation shaft extends horizontally. The second car-side return wheel 36 is disposed above the second main rope connecting portion 34 so that the rotation shaft thereof extends horizontally.
The first and second counterweight-side return wheels 37 and 38 are arranged above the counterweight 13 so that their rotation shafts extend horizontally. The driving device 15, the first and second car-side return wheels 35, 36, the first and second counterweight-side return wheels 37, 38, and the direction changing pulley 39 are arranged in the vertical projection plane. Is arranged above the car 4 so as to overlap with the car.
A main rope group 22 for suspending the car 4 and the counterweight 13 in the hoistway 1 is wound around the drive sheave 17. The main rope group 22 has a plurality of first main ropes 23 and a plurality of second main ropes 24. Here, the number of first main ropes 23 and the number of second main ropes 24 are the same.
The first main rope 23 has a first end connected to the first main rope connection portion 33 and a second end connected to the upper portion of the counterweight 13. The second main rope 24 has a first end connected to the second main rope connecting portion 34 and a second end connected to the upper portion of the counterweight 13.
The first main rope 23 is wound from the first end portion in the order of the first car side return wheel 35, the drive sheave 17, and the first counterweight side return wheel 37 in order. Has reached. The second main rope 24 is wound from the first end portion in the order of the second car side return wheel 36, the direction changing pulley 39, the drive sheave 17, and the second counterweight side return wheel 38, It reaches the second end.
Although the direction change pulley 39 is disposed substantially horizontally, the rotation axis of the direction change pulley 39 is slightly inclined with respect to the vertical so that the entry angle of the second main rope 24 is as small as possible.
Next, FIG. 5 is a front view showing the first and second counterweight side return wheels 37, 38 of FIG. The installation heights of the first and second counterweight side return wheels 37 and 38 are different from each other depending on the heights of the first and second main ropes 23 and 24 drawn from the drive sheave 17.
In such an elevator apparatus, the main rope group 22 is distributed to the first and second main ropes 23 and 24, and the first and second main rope connection portions 33, which are arranged symmetrically with respect to the center of gravity of the car 4. Since it is suspended at 34, the car 4 can be stably suspended at its center of gravity. Thereby, it is possible to prevent the reaction force due to the unbalanced load from acting on the car guide rails 31 and 32, and to improve the riding comfort.
In addition, since the first and second main rope connection portions 33 and 34 are arranged in the lower frame 8 of the car 4, it is not necessary to provide a connection portion for the main rope group 22 on the upper portion of the car 4. Therefore, the dimension of the upper part of the car 4 can be reduced, and the increase in the height dimension of the hoistway 1 can be suppressed while the driving device 15 is disposed in the upper part of the hoistway 1.
Furthermore, since the car 4 is directly suspended by 1: 1 roping, the configuration is simplified and the rotational speed of the driving device 15 can be kept low. For this reason, even if it arrange | positions the drive device 15 in the hoistway 1, a quiet elevator apparatus with a low vibration and a low noise can be provided.
Furthermore, the drive device 15, the first and second car side return wheels 35, 36, the first and second counterweight side return wheels 37, 38, and the direction change pulley 39 are provided in the vertical projection plane. Since it is arranged above the car 4 so as to overlap with the car 4, the plane area of the hoistway 1 can be reduced and the hoistway 1 can be made compact.
Moreover, since the 1st main rope connection part 33 has been arrange | positioned in the 1st corner | angular part 4c, and the 2nd main rope connection part 34 has been arrange | positioned in the 2nd corner | angular part 4d, it is the 1st and 2nd main rope connection. The parts 33 and 34 can be disposed within the exterior dimensions of the car 4, and the plane area of the hoistway 1 can be reduced. Similarly, since the engaging portion of the car 4 with the car guide rails 31 and 32 is also arranged at the first and second corners 4c, the engaging part does not protrude from the car 4 and the hoistway 1 is flat. The area can be reduced.
Furthermore, the installation heights of the first and second counterweight side return wheels 37 and 38 are different from each other depending on the heights of the first and second main ropes 23 and 24 drawn from the drive sheave 17. Therefore, the angle of entry of the main ropes 23 and 24 into the drive sheave 17 can be reduced, and uneven wear of the drive sheave 17 and wear of the main ropes 23 and 24 can be prevented.
Here, the difference between the heights of the first and second counterweight-side return wheels 37 and 38 is that if the main ropes 23 and 24 are one by one, the dimension between the centers of the main ropes 23 and 24 remains the same. do it. If there are two main ropes 23, 24, the distance between the centers of the adjacent main ropes 23, 24 may be doubled. That is, the maximum value of the approach angle of the plurality of main ropes may be made as small as possible. Furthermore, it is desirable that the approach angle of the main ropes 23 and 24 to the sheaves 17 and 35 to 39 is set within 1.5 degrees.
In the second embodiment, the two counterweight side return wheels 37 and 38 are used, but three or more counterweights may be used.
Embodiment 3 FIG.
Next, FIG. 6 is a plan view showing a main part of an elevator apparatus according to Embodiment 3 of the present invention. In the figure, the counterweight 13 is disposed on the side of the car 4 so as to face the first side face 4 a of the car 4. In contrast to the second embodiment, the first main rope connection portion 33 is arranged at the second corner portion 4d, and the second main rope connection portion 34 is arranged at the first corner portion 4c.
The first car side return wheel 35 is disposed above the first main rope connection portion 33. The second car side return wheel 36 is disposed above the second main rope connection portion 34. Above the counterweight 13, first and second counterweight-side return wheels 41, 42 are arranged.
The driving device 15, the first and second car-side return wheels 35, 36, the first and second counterweight-side return wheels 41, 42, and the direction changing pulley 39 are arranged in the vertical projection plane. Is arranged above the car 4 so as to overlap with the car.
FIG. 7 is a cross-sectional view of the first and second counterweight-side return wheels 41, 42 of FIG. The first and second counterweight-side return wheels 41 and 42 are independently rotated about a common rotation shaft 43 that is horizontally disposed. The diameters of the first and second counterweight-side return wheels 41 and 42 are different from each other depending on the heights of the first and second main ropes 23 and 24 drawn from the drive sheave 17.
Thus, even if the counterweight 13 is an elevator device arranged on the side of the car 4, the main rope group 22 is distributed to the first and second main ropes 23 and 24, thereby the second embodiment. The same effect can be obtained.
Further, the diameters of the first and second counterweight side return wheels 41 and 42 are different from each other depending on the height of the first and second main ropes 23 and 24 drawn from the drive sheave 17. The approach angle of the main ropes 23 and 24 to the drive sheave 17 can be reduced. Furthermore, the common rotating shaft 43 can be used, and the configuration can be simplified.
In the third embodiment, the two counterweight return wheels 41 and 42 are used, but three or more may be used.
[Brief description of the drawings]
1 is a front view showing an elevator apparatus according to Embodiment 1 of the present invention;
FIG. 2 is a plan view showing the structure at the top of the hoistway of FIG.
FIG. 3 is a plan view showing a main part of the elevator apparatus of FIG.
FIG. 4 is a plan view showing a main part of an elevator apparatus according to Embodiment 2 of the present invention,
5 is a front view showing the first and second counterweight-side return wheels of FIG.
FIG. 6 is a plan view showing a main part of an elevator apparatus according to Embodiment 3 of the present invention,
FIG. 7 is a cross-sectional view of the first and second counterweight side return wheels of FIG.

【特許請求の範囲】
【請求項１】
昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として上記駆動装置本体により回転される駆動シーブとを有する駆動装置、
上記駆動シーブに巻き掛けられている主索群、及び
上記主索群により上記昇降路内に吊り下げられ、上記駆動装置により上記昇降路内を昇降されるかご及び釣合重り
を備えているエレベータ装置であって、
上記かごには、垂直投影面内で上記かごを挟むように第１及び第２の主索接続部が設けられており、上記昇降路内の上部で上記第１及び第２の主索接続部の上方には、第１及び第２のかご側返し車が配置されており、上記主索群は、上記第１のかご側返し車に巻き掛けられ上記第１の主索接続部に接続された第１の主索と、上記第２のかご側返し車に巻き掛けられ上記第２の主索接続部に接続された第２の主索とを有しており、上記駆動装置、及び上記第１及び第２のかご側返し車は、垂直投影面内で上記かごと重なるように、上記かごの上方に配置されているエレベータ装置。
【請求項２】
上記かごは、下枠を含むかご枠と、上記下枠上に支持されているかご室とを有し、上記第１及び第２の主索接続部は、上記下枠に設けられている請求項１記載のエレベータ装置。
【請求項３】
上記第１及び第２の主索接続部は、上記かごの重心に対して対称に配置されている請求項１記載のエレベータ装置。
【請求項４】
上記昇降路内の上部に略水平に配置され、上記駆動シーブと上記第２のかご側返し車との間で上記第２の主索が巻き掛けられる方向転換プーリをさらに備えている請求項１記載のエレベータ装置。
【請求項５】
上記方向転換プーリの回転軸は、上記第２の主索の進入角度が小さくなるように垂直に対して傾けられている請求項４記載のエレベータ装置。
【請求項６】
上記昇降路内の上部に固定されている取付枠をさらに備え、上記駆動装置、及び上記第１及び第２のかご側返し車は、上記取付枠に搭載されてユニット化されている請求項１記載のエレベータ装置。
【請求項７】
上記かごは、互いに対角をなす第１及び第２の角部を有しており、上記第１及び第２の主索接続部は、上記第１及び第２の角部に配置されている請求項１記載のエレベータ装置。
【請求項８】
上記第１及び第２の角部と対向するように上記昇降路内に設置され、上記かごの昇降を案内する第１及び第２のかごガイドレールをさらに備えている請求項７記載のエレベータ装置。
【請求項９】
昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として上記駆動装置本体により回転される駆動シーブとを有する駆動装置、
上記駆動シーブに巻き掛けられている主索群、及び
上記主索群により上記昇降路内に吊り下げられ、上記駆動装置により上記昇降路内を昇降されるかご及び釣合重り
を備えているエレベータ装置であって、
上記昇降路内の上部で上記釣合重りの上方には、第１及び第２の釣合重り側返し車が配置されており、上記主索群は、上記第１の釣合重り側返し車に巻き掛けられ上記釣合重りに接続された第１の主索と、上記第２の釣合重り側返し車に巻き掛けられ上記釣合重りに接続された第２の主索とを有しており、上記第１及び第２の釣合重り側返し車の設置高さは、上記駆動シーブから引き出される上記第１及び第２の主索の高さに応じて互いに異なっているエレベータ装置。
【請求項１０】
昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として上記駆動装置本体により回転される駆動シーブとを有する駆動装置、
上記駆動シーブに巻き掛けられている主索群、及び
上記主索群により上記昇降路内に吊り下げられ、上記駆動装置により上記昇降路内を昇降されるかご及び釣合重り
を備えているエレベータ装置であって、
上記昇降路内の上部で上記釣合重りの上方には、第１及び第２の釣合重り側返し車が配置されており、上記主索群は、上記第１の釣合重り側返し車に巻き掛けられ上記釣合重りに接続された第１の主索と、上記第２の釣合重り側返し車に巻き掛けられ上記釣合重りに接続された第２の主索とを有しており、上記第１及び第２の釣合重り側返し車の径は、上記駆動シーブから引き出される上記第１及び第２の主索の高さに応じて互いに異なっているエレベータ装置。
【請求項１１】
上記第１及び第２の釣合重り側返し車は、共通の回転軸を中心として回転される請求項１０記載のエレベータ装置。
[Claims]
[Claim 1]
Disposed over the temperature descending path, a driving device main body, driving device having a drive sheave rotated by the driving device main body about a rotary axis extending along the vertical direction,
A main rope group wound around the drive sheave, and an elevator provided with a car and a counterweight suspended in the hoistway by the main rope group and being lifted and lowered in the hoistway by the drive device A device,
The car is provided with first and second main rope connecting portions so as to sandwich the car in a vertical projection plane, and the first and second main rope connecting portions are provided in the upper part of the hoistway. The first and second car-side return wheels are arranged above the main rope group, and the main rope group is wound around the first car-side return wheel and connected to the first main rope connection portion. A first main rope, and a second main rope wound around the second car side return wheel and connected to the second main rope connection portion, the drive device, and the The elevator apparatus arrange | positioned above the said car so that the 1st and 2nd car side return wheel may overlap with the said car in a vertical projection surface.
[Claim 2]
The car has a car frame including a lower frame and a car room supported on the lower frame, and the first and second main rope connection portions are provided on the lower frame. Item 2. The elevator apparatus according to Item 1.
[Claim 3]
The elevator apparatus according to claim 1, wherein the first and second main rope connection portions are arranged symmetrically with respect to the center of gravity of the car.
[Claim 4]
2. A direction change pulley disposed substantially horizontally above the hoistway and around which the second main rope is wound between the drive sheave and the second car side return wheel. The elevator apparatus as described.
[Claim 5]
The elevator apparatus according to claim 4, wherein the rotation shaft of the direction changing pulley is inclined with respect to the vertical so that an approach angle of the second main rope is small.
[Claim 6]
The mounting frame fixed to the upper part in the said hoistway is further provided, and the said drive device and the said 1st and 2nd car side return wheel are mounted on the said mounting frame, and are unitized. The elevator apparatus as described.
[Claim 7]
The car has first and second corner portions that are diagonal to each other, and the first and second main rope connection portions are disposed at the first and second corner portions. The elevator apparatus according to claim 1.
[Claim 8]
The elevator apparatus according to claim 7, further comprising first and second car guide rails installed in the hoistway so as to face the first and second corners and guiding the raising and lowering of the car. .
[Claim 9]
Disposed over the temperature descending path, a driving device main body, driving device having a drive sheave rotated by the driving device main body about a rotary axis extending along the vertical direction,
A main rope group wound around the drive sheave, and an elevator provided with a car and a counterweight suspended in the hoistway by the main rope group and being lifted and lowered in the hoistway by the drive device A device,
First and second counterweight side return pulleys are arranged above the counterweight in the upper part of the hoistway, and the main rope group is the first counterweight side return pulley. A first main rope that is wound around the counterweight and connected to the counterweight; and a second main rope that is wound around the second counterweight-side return wheel and connected to the counterweight. The installation heights of the first and second counterweight side return wheels are different from each other in accordance with the heights of the first and second main ropes drawn from the drive sheave.
10. Claim
Disposed over the temperature descending path, a driving device main body, driving device having a drive sheave rotated by the driving device main body about a rotary axis extending along the vertical direction,
A main rope group wound around the drive sheave, and an elevator provided with a car and a counterweight suspended in the hoistway by the main rope group and being lifted and lowered in the hoistway by the drive device A device,
First and second counterweight side return pulleys are arranged above the counterweight in the upper part of the hoistway, and the main rope group is the first counterweight side return pulley. A first main rope that is wound around the counterweight and connected to the counterweight; and a second main rope that is wound around the second counterweight-side return wheel and connected to the counterweight. The diameters of the first and second counterweight side return wheels are different from each other in accordance with the heights of the first and second main ropes drawn from the drive sheave.
11. Claims
The elevator apparatus according to claim 10, wherein the first and second counterweight-side return wheels are rotated about a common rotation axis.

Claims (11)

昇降路、
上記昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として上記駆動装置本体により回転される駆動シーブとを有する駆動装置、
上記駆動シーブに巻き掛けられている主索群、及び
上記主索群により上記昇降路内に吊り下げられ、上記駆動装置により上記昇降路内を昇降されるかご及び釣合重り
を備えているエレベータ装置であって、
上記かごには、垂直投影面内で上記かごを挟むように第１及び第２の主索接続部が設けられており、上記昇降路内の上部で上記第１及び第２の主索接続部の上方には、第１及び第２のかご側返し車が配置されており、上記主索群は、上記第１のかご側返し車に巻き掛けられ上記第１の主索接続部に接続された第１の主索と、上記第２のかご側返し車に巻き掛けられ上記第２の主索接続部に接続された第２の主索とを有しており、上記駆動装置、及び上記第１及び第２のかご側返し車は、垂直投影面内で上記かごと重なるように、上記かごの上方に配置されているエレベータ装置。Hoistway,
A driving device disposed at an upper portion in the hoistway and having a driving device main body and a driving sheave rotated by the driving device main body about a rotation axis extending in a vertical direction;
A main rope group wound around the drive sheave, and an elevator that is suspended in the hoistway by the main rope group, and that is lifted and lowered in the hoistway by the drive device and a counterweight A device,
The car is provided with first and second main rope connecting portions so as to sandwich the car in a vertical projection plane, and the first and second main rope connecting portions are provided in the upper part of the hoistway. The first and second car-side return wheels are arranged above the main rope group, and the main rope group is wound around the first car-side return wheel and connected to the first main rope connection portion. A first main rope, and a second main rope wound around the second car side return wheel and connected to the second main rope connection portion, the drive device, and the The elevator apparatus arrange | positioned above the said car so that the 1st and 2nd car side return wheel may overlap with the said car in a vertical projection surface. 上記かごは、下枠を含むかご枠と、上記下枠上に支持されているかご室とを有し、上記第１及び第２の主索接続部は、上記下枠に設けられている請求項１記載のエレベータ装置。The car includes a car frame including a lower frame, and a car room supported on the lower frame, and the first and second main rope connection portions are provided on the lower frame. Item 2. The elevator apparatus according to Item 1. 上記第１及び第２の主索接続部は、上記かごの重心に対して対称に配置されている請求項１記載のエレベータ装置。The elevator apparatus according to claim 1, wherein the first and second main rope connection portions are arranged symmetrically with respect to the center of gravity of the car. 上記昇降路内の上部に略水平に配置され、上記駆動シーブと上記第２のかご側返し車との間で上記第２の主索が巻き掛けられる方向転換プーリをさらに備えている請求項１記載のエレベータ装置。2. A direction change pulley arranged substantially horizontally above the hoistway and around which the second main rope is wound between the drive sheave and the second car side return wheel. The elevator apparatus as described. 上記方向転換プーリの回転軸は、上記第２の主索の進入角度が小さくなるように垂直に対して傾けられている請求項４記載のエレベータ装置。The elevator apparatus according to claim 4, wherein the rotation shaft of the direction changing pulley is inclined with respect to the vertical so that an approach angle of the second main rope is small. 上記昇降路内の上部に固定されている取付枠をさらに備え、上記駆動装置、及び上記第１及び第２のかご側返し車は、上記取付枠に搭載されてユニット化されている請求項１記載のエレベータ装置。The mounting frame fixed to the upper part in the said hoistway is further provided, and the said drive device and the said 1st and 2nd car side return wheel are mounted on the said mounting frame, and are unitized. The elevator apparatus as described. 上記かごは、互いに対角をなす第１及び第２の角部を有しており、上記第１及び第２の主索接続部は、上記第１及び第２の角部に配置されている請求項１記載のエレベータ装置。The car has first and second corner portions that are diagonal to each other, and the first and second main rope connection portions are disposed at the first and second corner portions. The elevator apparatus according to claim 1. 上記第１及び第２の角部と対向するように上記昇降路内に設置され、上記かごの昇降を案内する第１及び第２のかごガイドレールをさらに備えている請求項７記載のエレベータ装置。The elevator apparatus according to claim 7, further comprising first and second car guide rails installed in the hoistway so as to face the first and second corners and guiding the raising and lowering of the car. . 昇降路、
上記昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として上記駆動装置本体により回転される駆動シーブとを有する駆動装置、
上記駆動シーブに巻き掛けられている主索群、及び
上記主索群により上記昇降路内に吊り下げられ、上記駆動装置により上記昇降路内を昇降されるかご及び釣合重り
を備えているエレベータ装置であって、
上記昇降路内の上部で上記釣合重りの上方には、第１及び第２の釣合重り側返し車が配置されており、上記主索群は、上記第１の釣合重り側返し車に巻き掛けられ上記釣合重りに接続された第１の主索と、上記第２の釣合重り側返し車に巻き掛けられ上記第２の主索接続部に接続された第２の主索とを有しており、上記第１及び第２の釣合重り側返し車の設置高さは、上記駆動シーブから引き出される上記第１及び第２の主索の高さに応じて互いに異なっているエレベータ装置。Hoistway,
A driving device disposed at an upper portion in the hoistway and having a driving device main body and a driving sheave rotated by the driving device main body about a rotation axis extending in a vertical direction;
A main rope group wound around the drive sheave, and an elevator that is suspended in the hoistway by the main rope group and is lifted and lowered in the hoistway by the drive device and an elevator weight A device,
First and second counterweight side return pulleys are arranged above the counterweight in the upper part of the hoistway, and the main rope group is the first counterweight side return pulley. A first main rope that is wound around and connected to the counterweight, and a second main rope that is wound around the second counterweight-side return wheel and connected to the second main rope connecting portion The installation heights of the first and second counterweight-side return wheels are different from each other in accordance with the heights of the first and second main ropes drawn from the drive sheave. Elevator equipment. 昇降路、
上記昇降路内の上部に配置され、駆動装置本体と、垂直方向に沿って延びる回転軸を中心として上記駆動装置本体により回転される駆動シーブとを有する駆動装置、
上記駆動シーブに巻き掛けられている主索群、及び
上記主索群により上記昇降路内に吊り下げられ、上記駆動装置により上記昇降路内を昇降されるかご及び釣合重り
を備えているエレベータ装置であって、
上記昇降路内の上部で上記釣合重りの上方には、第１及び第２の釣合重り側返し車が配置されており、上記主索群は、上記第１の釣合重り側返し車に巻き掛けられ上記釣合重りに接続された第１の主索と、上記第２の釣合重り側返し車に巻き掛けられ上記第２の主索接続部に接続された第２の主索とを有しており、上記第１及び第２の釣合重り側返し車の径は、上記駆動シーブから引き出される上記第１及び第２の主索の高さに応じて互いに異なっているエレベータ装置。Hoistway,
A driving device disposed at an upper portion in the hoistway and having a driving device main body and a driving sheave rotated by the driving device main body about a rotation axis extending in a vertical direction;
A main rope group wound around the drive sheave, and an elevator that is suspended in the hoistway by the main rope group, and that is lifted and lowered in the hoistway by the drive device and a counterweight A device,
First and second counterweight side return pulleys are arranged above the counterweight in the upper part of the hoistway, and the main rope group is the first counterweight side return pulley. A first main rope that is wound around and connected to the counterweight, and a second main rope that is wound around the second counterweight-side return wheel and connected to the second main rope connecting portion The first and second counterweight-side return wheels have different diameters depending on the height of the first and second main ropes drawn from the drive sheave. apparatus. 上記第１及び第２の釣合重り側返し車は、共通の回転軸を中心として回転される請求項１０記載のエレベータ装置。The elevator apparatus according to claim 10, wherein the first and second counterweight-side return wheels are rotated about a common rotation axis.
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