JP4110138B2

JP4110138B2 - Elevator equipment

Info

Publication number: JP4110138B2
Application number: JP2004511207A
Authority: JP
Inventors: 修喜濱口; 武信本田; 直樹橋口
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2002-06-10
Filing date: 2002-06-10
Publication date: 2008-07-02
Anticipated expiration: 2022-06-10
Also published as: KR100536934B1; EP1512652A1; JPWO2003104126A1; WO2003104126A1; DE60237316D1; EP1512652B1; KR20040019385A; CN1522219A; CN1220618C; EP1512652A4

Description

技術分野
この発明は、第１及び第２の駆動装置により１台のかごが昇降されるマルチドライブ方式のエレベータ装置に関するものである。
背景技術
図９は例えば特開平７−１１７９５７号公報に示された従来のエレベータ装置を示す斜視図である。図において、昇降路１内には、一対のかごガイドレール２と一対の釣合おもりガイドレール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。釣合おもり５は、釣合おもりガイドレール３に案内されて昇降路１内を昇降される。
昇降路１内の釣合おもり５の上方には、第１及び第２の駆動装置（巻上機）６，７が配置されている。第１の駆動装置６は、昇降路１内の上部に水平に固定されている軸８と、この軸８に固定されている固定子（図示せず）と、軸８を中心に回転される第１の駆動シーブ９と、固定子に対向して第１の駆動シーブ９の内側に固定された回転子（図示せず）とを有している。
第２の駆動装置７は、第１の駆動装置６と共通の軸８と、この軸８に固定されている固定子（図示せず）と、軸８を中心に回転される第２の駆動シーブ１０と、固定子に対向して第２の駆動シーブ１０の内側に固定された回転子（図示せず）とを有している。
昇降路１内のかご４の上方には、回転自在の第１及び第２の返し車１１，１２が配置されている。第１及び第２の返し車１１，１２は、水平に延びる回転軸を中心に回転される。
第１の駆動シーブ９及び第１の返し車１１には、第１の主索１３が全掛け式で巻き掛けられている。第２の駆動シーブ１０及び第２の返し車１１には、第２の主索１４が全掛け式で巻き掛けられている。
第１及び第２の主索１３，１４の第１の端部には、かご４が接続され吊り下げられている。第１及び第２の主索１３，１４の第２の端部には、釣合おもり５が接続され吊り下げられている。即ち、かご４及び釣合おもり５は、１：１ローピング方式により、昇降路１内に吊り下げられている。
このようなエレベータ装置は、第１及び第２の駆動装置６，７が同時に駆動されることにより、第１及び第２の主索１３，１４が同時に移動され、かご４及び釣合おもり５が昇降路１内を昇降される。また、２台の駆動装置６，７により１台のかご４が昇降される駆動方式は、マルチドライブ方式と呼ばれている。さらに、機械室を設けず、駆動装置６，７を昇降路１内に配置したエレベータ装置は、機械室レスエレベータと呼ばれている。
ここで、図９に示した従来のマルチドライブ方式の機械室レスエレベータでは、駆動装置６，７は、昇降路１内の上部で、かご４と干渉しないように配置されている。即ち、駆動装置６，７は、垂直投影面内でかご４と重ならないように配置されている。
また、通常、駆動シーブ６，７の径は、主索１３，１４の径に対する比率等により規定される大きさよりも小さくすることができない。このため、駆動シーブ６，７の径は、釣合おもり５の厚さ寸法よりも大きくなる。これに対して、駆動シーブ６，７は、それらの回転軸が水平に延びるように配置されているため、かご４と駆動シーブ６，７との干渉を避けるためには、駆動シーブ６，７の径に応じて、釣合おもり５をかご４から離して配置する必要があり、昇降路１の平面積が大きくなってしまう。
さらに、駆動シーブ６，７及び返し車１１，１２は、それらの回転軸が水平に延びるように配置されており、主索１３，１４を半掛け式で巻き掛けると十分なトラクション能力を確保できないため、主索１３，１４が全掛け式で巻き掛けられている。このため、駆動シーブ６，７及び返し車１１，１２の回転軸に作用する軸荷重が大きくなり、回転軸及びそれらの支持部材が大形化し、高価になってしまう。
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、昇降路内の省スペース化を図ることができるとともに、駆動装置及び返し車の支持構造を簡単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、第１の駆動シーブを有し、昇降路内の上部に配置されている第１の駆動装置、第２の駆動シーブを有し、昇降路内の上部に配置されている第２の駆動装置、第１及び第２の端部を有し、第１の駆動シーブに巻き掛けられている第１の主索、第３及び第４の端部を有し、第２の駆動シーブに巻き掛けられている第２の主索、第１の主索の第１の端部と第２の主索の第３の端部とに吊り下げられ、第１及び第２の駆動装置により昇降路内を昇降されるかご、及び第１の主索の第２の端部と第２の主索の第４の端部とに吊り下げられ、第１及び第２の駆動装置により昇降路内を昇降される釣合おもりを備え、第１及び第２の駆動装置は、垂直投影面内でかごと重なるように、かつ第１及び第２の駆動シーブの回転軸が垂直に延びるように水平に配置されており、昇降路内のかごの上方には、第１の主索をかごに導く第１のかご返し車と、第２の主索をかごに導く第２のかご返し車とが配置されており、昇降路内の釣合おもりの上方には、第１の主索を釣合おもりに導く第１の釣合おもり返し車と、第２の主索を釣合おもりに導く第２の釣合おもり返し車とが配置されている。
また、この発明によるエレベータ装置は、昇降路、第１の駆動シーブを有し、昇降路内の上部に配置されている第１の駆動装置、第２の駆動シーブを有し、昇降路内の上部に配置されている第２の駆動装置、及び第１及び第２の駆動装置により昇降路内を昇降されるかご及び釣合おもりを備え、第１及び第２の駆動装置は、垂直投影面内でかごと重なるように、かつ第１及び第２の駆動シーブの回転軸が垂直に延びるように水平に配置されており、第１及び第２の駆動シーブには、第１及び第２の端部を有する主索が巻き掛けられ、第１及び第２の端部は、釣合おもりに接続され、かごの下部には、主索が巻き掛けられる第１及び第２のかご吊り車が搭載され、昇降路内のかごの上方には、主索を第１の駆動シーブから第１のかご吊り車に導く第１のかご返し車と、主索を第２の駆動シーブから第２のかご吊り車に導く第２のかご返し車とが配置され、昇降路内の釣合おもりの上方には、主索を第１の駆動シーブから釣合おもりに導く第１の釣合おもり返し車と、主索を第２の駆動シーブから釣合おもりに導く第２の釣合おもり返し車とが配置されているものである。
さらに、この発明によるエレベータ装置は、昇降路、第１の駆動シーブを有し、昇降路内の上部に配置されている第１の駆動装置、第２の駆動シーブを有し、昇降路内の上部に配置されている第２の駆動装置、及び第１及び第２の駆動装置により昇降路内を昇降されるかご及び釣合おもりを備え、第１及び第２の駆動装置は、垂直投影面内でかごと重なるように、かつ第１及び第２の駆動シーブの回転軸が垂直に延びるように水平に配置されており、第１及び第２の駆動シーブには、第１及び第２の端部を有する主索が巻き掛けられ、第１の端部はかごの一側に接続され、第２の端部はかごの他側に接続され、釣合おもりの下部には、主索が巻き掛けられる釣合おもり吊り車が搭載され、昇降路内のかごの上方には、主索を第１の駆動シーブからかごの一側に導く第１のかご返し車と、主索を第２の駆動シーブからかごの他側に導く第２のかご返し車とが配置され、昇降路内の釣合おもりの上方には、主索を第１の駆動シーブから釣合おもり吊り車に導く第１の釣合おもり返し車と、主索を第２の駆動シーブから釣合おもり吊り車に導く第２の釣合おもり返し車とが配置されているものである。
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平面図、図２は図１のエレベータ装置を示す概略の正面図である。
図において、昇降路２１内には、一対のかごガイドレール２２と、一対の釣合おもりガイドレール２３とが設置されている。かご２４は、かごガイドレール２２に案内されて昇降路２１内を昇降される。釣合おもり２５は、釣合おもりガイドレール２３に案内されて昇降路２１内を昇降される。
かご２４は、互いに対向する第１及び第２の側面２４ａ，２４ｂと、互いに対向する前面２４ｃ及び後面２４ｄとを有している。前面２４ｃには、かご出入口が設けられている。
釣合おもり２５は、第１の側面２４ｃに対向するようにかご２４の側方に配置されている。釣合おもりガイドレール２３は、垂直投影面内において、一対の釣合おもりガイドレール２３を結ぶ直線が一対のかごガイドレール２２を結ぶ直線に対して直角に延びるように設置されている。
かごガイドレール２２及び釣合おもりガイドレール２３の上端部には、機械台２６が支持固定されている。機械台２６には、かご２４及び釣合おもり２５を昇降させる第１及び第２の駆動装置（巻上機）２７，２８が搭載されている。第１の駆動装置２７は、モータを含む第１の駆動装置本体２７ａと、第１の駆動装置本体２７ａによって回転される第１の駆動シーブ２７ｂとを有している。
第２の駆動装置２８は、第１の駆動装置２７と同じサイズ・構造を持ち、第２の駆動装置本体２８ａと第２の駆動シーブ２８ｂとを有している。
駆動装置２７，２８としては、駆動装置本体２７ａ，２８ａの軸方向寸法よりも、駆動シーブ２７ｂ，２８ｂの径が大きい薄形巻上機が用いられている。また、駆動装置２７，２８は、駆動シーブ２７ｂ，２８ｂの回転軸が垂直に延びるように水平に設置されている。さらに、第１及び第２の駆動装置２７，２８は、かご２４の間口方向の中心よりも第２の側面２４ｂ側でかご２４の上方に配置されている。即ち、第１及び第２の駆動装置２７，２８は、垂直投影面内でかご２４の領域の内側に配置されている。
また、第１及び第２の駆動装置２７，２８は、第１及び第２の駆動シーブ２７ｂ，２８ｂがほぼ同じ高さとなるように配置されている。
第１の駆動シーブ２７ｂには、かご２４及び釣合おもり２５を吊り下げる第１の主索２９が巻き掛けられている。第１の主索２９は、図では１本のみ示すが、複数本のロープを含んでもよい。
第２の駆動シーブ２８ｂには、かご２４及び釣合おもり２５を吊り下げる第２の主索３０が巻き掛けられている。第２の主索３０は、図では１本のみ示すが、複数本のロープを含んでもよい。
第１及び第２の主索２９，３０の駆動シーブ２７ｂ，２８ｂへの巻き付け角度は、９０°よりも大きく設定されている。さらに詳しくは、上記巻き付け角度は、１３０°よりみも大きく設定されている。また、第１及び第２の主索２９，３０は、半掛け式で駆動シーブ２７ｂ，２８ｂに巻き掛けられている。
かご２４の第１の側面２４ａの上方には、第１の主索２９をかご２４に導く第１のかご返し車３１が配置されている。かご２４の第２の側面２４ｂの上方には、第２の主索３０をかご２４に導く第２のかご返し車３２が配置されている。
昇降路２１内の釣合おもり２５の上方には、第１の主索２９を釣合おもり２５に導く第１の釣合おもり返し車３３と、第２の主索３０を釣合おもり２５に導く第２の釣合おもり返し車３４とが配置されている。
昇降路２１内の上部には、第２の主索３０が巻き掛けられ、第２の主索３０の第２の駆動シーブ２８ｂへの巻き付け角度を増大させる補助プーリ３５が配置されている。
返し車３１〜３４は、それらの回転軸が水平に延びるように配置されている。補助プーリ３５は、その回転軸がほぼ垂直に延びるように配置されている。
かご２４の第１及び第２の側面２４ａ，２４ｂの下端部には、第１及び第２のかご吊り部３６，３７が設けられている。第１及び第２のかご吊り部３６，３７は、垂直投影面内でそれらを互いに結ぶ直線がかご２４の重心を通るように配置されている。
第１の主索２９は、第１のかご吊り部３６に接続された第１の端部２９ａと、釣合おもり２５の上枠２５ａに接続された第２の端部２９ｂとを有している。第２の主索３０は、第２のかご吊り部３７に接続された第３の端部３０ａと、釣合おもり２５の上枠２５ａに接続された第４の端部３０ｂとを有している。
第１ないし第４の端部２９ａ，２９ｂ，３０ａ，３０ｂには、それぞれロープシャックル３８が接続されている。ロープシャックル３８とかご吊り部３６，３７の下面及び上枠２５ａの下面との間には、それぞれシャックルばね３９が介在されている。
かご２４の下部には、第１のかご吊り部３６におけるロープシャックル３８の変位量を検出する第１の検出装置４０と、第２のかご吊り部３７におけるロープシャックル３８の変位量を検出する第２の検出装置４１とが設けられている。第１及び第２の検出装置４０，４１としては、例えば反射形光センサが使用される。また、反射形光センサに限らず、種々の接触式又は非接触式センサを使用することができる。
機械台２６には、第１及び第２の駆動装置２７，２８を制御する制御盤４２、及びかご２４の過速度を検出する調速機４３が搭載されている。即ち、機械台２６には、制御盤４２、調速機４３、第１及び第２の駆動装置２７，２８、第１及び第２のかご返し車３１，３２、第１及び第２の釣合おもり返し車３３，３４、及び補助プーリ３５が搭載されている。
また、機械台２６は、図２に示すように、第１及び第２の駆動装置２７，２８、第１及び第２のかご返し車３１，３２、及び第１及び第２の釣合おもり返し車３３，３４の上下方向の設置範囲内に設置されている。さらに、機械台２６は、かごガイドレール２２及び釣合おもりガイドレール２３の上部に複数の支持台４４及び複数の緩衝部材４５を介して支持されている。
このようなエレベータ装置では、第１及び第２の駆動装置２７，２８が同時に駆動されることにより、かご２４及び釣合おもり２５が昇降路２１内を昇降される。このとき、第１及び第２の駆動装置２７，２８を水平に配置し、かご返し車３１，３２及び釣合おもり返し車３３，３４を用いたので、主索２９，３０を駆動シーブ２７ｂ，２８ｂに半掛け式で巻き掛けても十分な巻き付け角度を確保することができる。これにより、駆動シーブ２７ｂ，２８ｂの軸荷重を軽減して、駆動装置２７，２８及び返し車３１〜３４の支持構造を簡単にすることができる。
また、第１及び第２の駆動装置２７，２８は、垂直投影面内でかご２４と重なるように配置されているので、昇降路２１の平面寸法を小さく抑えることができる。しかも、駆動装置２７，２８として薄形巻上機を用いたので、駆動シーブ２７ｂ，２８ｂの径によらず、かご２４と駆動装置２７，２８との干渉を避けつつ、昇降路２１の上下方向寸法の増大を抑えることができる。これにより、昇降路２１内の省スペース化を図ることができる。
さらに、第１及び第２の検出装置４０，４１をかご２４の下部に配置したので、第１及び第２の主索２９，３０の張力差を監視することができる。張力差は制御盤４２で監視され、張力差が予め設定された値に達した場合、張力差を解消するための指令信号が制御盤４２から駆動装置２７，２８に出力される。
さらにまた、補助プーリ３５を用いたので、第２の主索３０の第２の駆動シーブ２８ｂへの巻き付け角度を増大させ、十分なトラクション能力を確保することができる。
また、制御盤４２、調速機４３、第１及び第２の駆動装置２７，２８、第１及び第２のかご返し車３１，３２、第１及び第２の釣合おもり返し車３３，３４、及び補助プーリ３５を共通の機械台２６に搭載したので、構造を簡単にすることができる。さらに、機械台２６と機械台２６に搭載される機器とをユニット化して、昇降路２１内への据付を容易にすることができる。
さらにまた、機械台２６は、第１及び第２の駆動装置２７，２８、第１及び第２のかご返し車３１，３２、及び第１及び第２の釣合おもり返し車３３，３４の上下方向の設置範囲内に設置されているので、昇降路２１内の上部の空間の省スペース化を図ることができる。
また、機械台２６は、かごガイドレール２２及び釣合おもりガイドレール２３の上部に複数の支持台４４及び複数の緩衝部材４５を介して支持されているので、駆動装置２７，２８や返し車３１〜３４の振動がガイドレール２２，２３に伝わるのを防止することができる。
さらに、かご吊り部３６，３７は、かご２４の上面より低い位置に配置され、かつシャックルばね３９がかご吊り部３６，３７の下部に配置されているため、ロープシャックル３８及びシャックルばね３９がかご２４の上方に突出して配置されることがなく、昇降路２１の高さ寸法を小さくすることができる。同様に、釣合おもり２５側についても、かつシャックルばね３９が上枠２５ａの下部に配置されているため、昇降路２１の高さ寸法を小さくすることができる。
さらにまた、第１及び第２のかご吊り部３６，３７は、垂直投影面内でそれらを互いに結ぶ直線がかご２４の重心を通るように配置されているので、かご２４を安定して吊り下げることができる。
なお、実施の形態１では、第１及び第２の駆動装置２７，２８が、かご２４の間口方向の中心よりも第２の側面２４ｂ側に配置されているが、例えば第２の駆動装置２８を第１の側面２４ａ側に配置してもよい。この場合、第１の駆動装置２７の近傍に補助プーリ３５が配置され、第２の主索３０の第２の駆動シーブ２８ｂから第２の釣合おもり返し車３４へ向かう部分が補助プーリ３５に巻き掛けられ、これにより第２の主索３０の第２の駆動シーブ２８ｂへの巻き付け角度を増大させることができる。
実施の形態２．
次に、図３はこの発明の実施の形態２によるエレベータ装置を示す平面図、図４は図３のエレベータ装置を示す概略の正面図である。図において、釣合おもり２５は、かご２４の後面２４ｄに対向するようにかご２４の後方に配置されている。釣合おもりガイドレール２３は、垂直投影面内において、一対の釣合おもりガイドレール２３を結ぶ直線が一対のかごガイドレール２２を結ぶ直線に対して平行に延びるように設置されている。
第１及び第２の駆動装置２７，２８は、かご２４の奥行き方向（図３の上下方向）の中心よりも前面２４ｃ側でかご２４の上方に配置されている。第１の主索２９の第１の駆動シーブ２７ｂから第１のかご返し車３１に延びる部分と、第２の主索３０の第２の駆動シーブ２８ｂから第２のかご返し車３２に延びる部分とは、互いに交差している。他の構成は、実施の形態１と同様である。
このようなエレベータ装置では、第１及び第２の駆動装置２７，２８が垂直投影面内でかご２４と重なるように水平に配置されており、かつかご返し車３１，３２及び釣合おもり返し車３３，３４により主索２９，３０がかご２４及び釣合おもり２５に導かれるので、実施の形態１と同様の効果を得ることができる。
実施の形態３．
次に、図５はこの発明の実施の形態３によるエレベータ装置を示す平面図、図６は図５のエレベータ装置を示す概略の正面図である。図において、かご２４の下部には、回転自在の第１及び第２のかご返し車が搭載されている。かご返し車５１，５２は、それらの回転軸がかご２４の奥行き方向と平行かつ水平に延びるように配置されている。また、かご返し車５１，５２は、垂直投影面内で第１及び第２の側面２４ａ，２４ｂと交差するように配置されている。
第１及び第２の駆動シーブ２７ｂ，２８ｂ、第１及び第２のかご返し車３１，３２、第１及び第２の釣合おもり返し車３３，３４、及び第１及び第２のかご吊り車５１，５２には、主索５３が巻き掛けられている。主索５３は、図では１本のみ示すが、１本又は複数本のロープを含んでいる。
また、かご返し車５１，５２は、それらの間を通る主索５３がかご２４の重心を通るように配置されている。
主索５３は、第１及び第２の端部５３ａ，５３ｂを有している。第１及び第２の端部５３ａ，５３ｂは、ロープシャックル３８及びシャックルばね３９を介して釣合おもり２５の上枠２５ａに接続されている。
また、主索５３は、第１の端部５３ａから、第１の釣合おもり返し車３３、第１の駆動シーブ２７ｂ、第１のかご返し車３１、第１のかご吊り車５１、第２のかご吊り車５２、第２のかご返し車３２、第２の駆動シーブ２８ｂ及び第２の釣合おもり返し車３４の順に巻き掛けられ、第２の端部５３ｂに至っている。
第１及び第２の検出装置４０，４１は、釣合おもり２５の上枠２５ａに搭載されている。他の構成は、実施の形態２と同様である。
このようなエレベータ装置では、第１及び第２の駆動装置２７，２８が垂直投影面内でかご２４と重なるように水平に配置されており、かつかご返し車３１，３２及び釣合おもり返し車３３，３４により主索５３がかご２４及び釣合おもり２５に導かれるので、実施の形態１、２と同様の効果を得ることができる。
また、回転自在なかご吊り車５１，５２でかご２４が吊り下げられているので、かご２４を安定して吊り下げることができる。さらに、主索５３の本数を減らすことができ、これに伴い主索５３の端末接続部の数も減らすことができ、コストを削減することができる。
実施の形態４．
次に、図７はこの発明の実施の形態４によるエレベータ装置を示す平面図、図８は図７のエレベータ装置を示す概略の正面図である。図において、釣合おもり２５の下部には、回転自在の釣合おもり吊り車５４が搭載されている。釣合おもり吊り車５４は、その回転軸が釣合おもり２５の幅方向（図７及び図８の左右方向）と平行かつ水平に延びるように配置されている。また、釣合おもり吊り車５４は、釣合おもり２５の幅方向の中央部、即ち釣合おもり２５の重心位置に配置されている。
主索５３の第１の端部５３ａは、ロープシャックル３８及びシャックルばね３９を介して第１のかご吊り部３６に接続されている。主索５３の第２の端部５３ｂは、ロープシャックル３８及びシャックルばね３９を介して第２のかご吊り部３７に接続されている。
また、主索５３は、第１の端部５３ａから、第１のかご返し車３１、第１の駆動シーブ２７ｂ、第１の釣合おもり返し車３３、釣合おもり吊り車５４、第２の釣合おもり返し車３４、第２の駆動シーブ２８ｂ及び第２のかご返し車３２の順に巻き掛けられ、第２の端部５３ｂに至っている。他の構成は、実施の形態２と同様である。
このようなエレベータ装置では、第１及び第２の駆動装置２７，２８が垂直投影面内でかご２４と重なるように水平に配置されており、かつかご返し車３１，３２及び釣合おもり返し車３３，３４により主索５３がかご２４及び釣合おもり２５に導かれるので、実施の形態１、２と同様の効果を得ることができる。
また、回転自在な釣合おもり吊り車５４で釣合おもり２５が吊り下げられているので、釣合おもり２５を安定して吊り下げることができる。さらに、主索５３の本数を減らすことができ、これに伴い主索５３の端末接続部の数も減らすことができ、コストを削減することができる。
なお、実施の形態４では、釣合おもり２５の下部に釣合おもり吊り車５４を搭載したが、釣合おもり吊り車５４は、釣合おもり２５の上部に搭載してもよい。
また、実施の形態１〜４において、機械台２６は、ガイドレール２２，２３ではなく、昇降路壁に対して固定してもよい。
また、主索としては、鋼製ロープを用いてもよいが、高摩擦樹脂材からなる外層被覆体が外周部に設けられている樹脂被覆ロープを使用することもでき、駆動シーブや返し車の径を小さくして、昇降路内の省スペース化を図ることができる。
【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平面図、
図２は図１のエレベータ装置を示す概略の正面図、
図３はこの発明の実施の形態２によるエレベータ装置を示す平面図、
図４は図３のエレベータ装置を示す概略の正面図、
図５はこの発明の実施の形態３によるエレベータ装置を示す平面図、
図６は図５のエレベータ装置を示す概略の正面図、
図７はこの発明の実施の形態４によるエレベータ装置を示す平面図、
図８は図７のエレベータ装置を示す概略の正面図、
図９は従来のエレベータ装置の一例を示す斜視図である。TECHNICAL FIELD The present invention relates to a multi-drive type elevator apparatus in which one car is moved up and down by first and second driving devices.
FIG. 9 is a perspective view showing a conventional elevator apparatus disclosed in, for example, Japanese Patent Laid-Open No. 7-117957. 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 counterweight 5 is raised and lowered in the hoistway 1 while being guided by the counterweight guide rail 3.
Above the counterweight 5 in the hoistway 1, first and second driving devices (winding machines) 6 and 7 are arranged. The first drive device 6 is rotated around the shaft 8, a shaft 8 that is horizontally fixed to the upper part in the hoistway 1, a stator (not shown) that is fixed to the shaft 8, and the shaft 8. It has a first drive sheave 9 and a rotor (not shown) fixed inside the first drive sheave 9 so as to face the stator.
The second drive device 7 includes a shaft 8 common to the first drive device 6, a stator (not shown) fixed to the shaft 8, and a second drive rotated around the shaft 8. The sheave 10 includes a rotor (not shown) that is fixed to the inside of the second drive sheave 10 so as to face the stator.
Above the car 4 in the hoistway 1, rotatable first and second return wheels 11 and 12 are arranged. The first and second return wheels 11 and 12 are rotated about a rotation shaft extending horizontally.
A first main rope 13 is wound around the first drive sheave 9 and the first return wheel 11 in a fully hung manner. A second main rope 14 is wound around the second drive sheave 10 and the second return wheel 11 in a full-hanging manner.
A car 4 is connected to and suspended from the first ends of the first and second main ropes 13 and 14. A counterweight 5 is connected to and suspended from the second ends of the first and second main ropes 13 and 14. That is, the car 4 and the counterweight 5 are suspended in the hoistway 1 by a 1: 1 roping method.
In such an elevator apparatus, the first and second driving devices 6 and 7 are simultaneously driven, whereby the first and second main ropes 13 and 14 are simultaneously moved, and the car 4 and the counterweight 5 are moved. The hoistway 1 is moved up and down. A driving method in which one car 4 is moved up and down by two driving devices 6 and 7 is called a multi-drive method. Further, the elevator apparatus in which the drive units 6 and 7 are arranged in the hoistway 1 without providing a machine room is called a machine room-less elevator.
Here, in the conventional multi-drive type machine room-less elevator shown in FIG. 9, the driving devices 6 and 7 are arranged in the upper part of the hoistway 1 so as not to interfere with the car 4. That is, the driving devices 6 and 7 are arranged so as not to overlap the car 4 in the vertical projection plane.
In general, the diameter of the drive sheaves 6 and 7 cannot be smaller than the size defined by the ratio to the diameter of the main ropes 13 and 14. For this reason, the diameter of the drive sheaves 6 and 7 is larger than the thickness dimension of the counterweight 5. On the other hand, since the drive sheaves 6 and 7 are arranged so that their rotation shafts extend horizontally, in order to avoid interference between the car 4 and the drive sheaves 6 and 7, the drive sheaves 6 and 7. The counterweight 5 needs to be arranged away from the car 4 in accordance with the diameter of the hoistway 1 and the flat area of the hoistway 1 becomes large.
Further, the drive sheaves 6 and 7 and the return wheels 11 and 12 are arranged such that their rotation shafts extend horizontally, and if the main ropes 13 and 14 are wound in a half-hanging manner, sufficient traction capability cannot be secured. For this reason, the main ropes 13 and 14 are wound in a full-hanging manner. For this reason, the axial load which acts on the rotating shafts of the drive sheaves 6 and 7 and the return wheels 11 and 12 increases, and the rotating shafts and their supporting members become large and expensive.
DISCLOSURE OF THE INVENTION The present invention has been made to solve the above-described problems, and can save space in the hoistway and simplify the support structure for the drive device and the return wheel. An object of the present invention is to obtain an elevator apparatus that can perform the above.
The elevator apparatus according to the present invention has a hoistway and a first drive sheave, has a first drive device and a second drive sheave arranged at the upper part in the hoistway, and has an upper part in the hoistway. A second drive device disposed, having first and second ends, having a first main rope wound around the first drive sheave, and third and fourth ends; A second main rope wound around the second drive sheave, a first end of the first main rope and a third end of the second main rope, and The car is lifted and lowered in the hoistway by the second driving device, and is suspended from the second end of the first main rope and the fourth end of the second main rope, and the first and second The first and second driving devices are arranged so as to overlap with each other in the vertical projection plane and the first and second driving seats. Are arranged horizontally so that the axis of rotation of the first and second rotation axes extends vertically, and a first car return wheel for guiding the first main rope to the car and a second main rope are arranged above the car in the hoistway. And a second counterweight wheel that guides the first main rope to the counterweight, and a second counterweight wheel that guides the first main rope to the counterweight. And a second counterweight return wheel for guiding the main rope to the counterweight.
Moreover, the elevator apparatus by this invention has a hoistway and a 1st drive sheave, has the 1st drive device and 2nd drive sheave which are arrange | positioned at the upper part in a hoistway, A second driving device disposed at an upper portion; and a car and a counterweight that are lifted and lowered in a hoistway by the first and second driving devices. The first and second driving devices have a vertical projection plane The first and second drive sheaves are arranged horizontally so that they overlap with each other and the rotation shafts of the first and second drive sheaves extend vertically. A main rope having an end is wound around, the first and second end parts are connected to a counterweight, and first and second car suspension wheels around which the main rope is wound are arranged at the lower part of the car. Mounted above the car in the hoistway, guide the main rope from the first drive sheave to the first car suspension A first car return wheel and a second car return wheel for guiding the main rope from the second drive sheave to the second car suspension car are arranged, and the main rope is located above the counterweight in the hoistway. A first counterweight wheel for guiding the main rope from the first drive sheave to the counterweight and a second counterweight wheel for guiding the main rope from the second drive sheave to the counterweight are arranged. Is.
Furthermore, the elevator apparatus according to the present invention has a hoistway and a first drive sheave, and has a first drive device and a second drive sheave arranged in the upper part of the hoistway, A second driving device disposed at an upper portion; and a car and a counterweight that are lifted and lowered in a hoistway by the first and second driving devices. The first and second driving devices have a vertical projection plane The first and second drive sheaves are arranged horizontally so that they overlap with each other and the rotation shafts of the first and second drive sheaves extend vertically. A main rope having an end is wound around, the first end is connected to one side of the car, the second end is connected to the other side of the car, and the main rope is located below the counterweight. A counterweight suspension car is mounted, and the main rope is placed above the car in the hoistway with the first drive sheave. A first car return wheel that leads to one side of the car and a second car return wheel that guides the main rope from the second drive sheave to the other side of the car are arranged above the counterweight in the hoistway. A first counterweight return wheel for guiding the main rope from the first drive sheave to the counterweight suspension car and a second balance for guiding the main rope from the second drive sheave to the counterweight suspension truck. A weight-return car is arranged.
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 plan view showing an elevator apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a schematic front view showing the elevator apparatus of FIG.
In the figure, a pair of car guide rails 22 and a pair of counterweight guide rails 23 are installed in a hoistway 21. The car 24 is raised and lowered in the hoistway 21 while being guided by the car guide rail 22. The counterweight 25 is moved up and down in the hoistway 21 while being guided by the counterweight guide rail 23.
The car 24 has first and second side surfaces 24a and 24b facing each other, and a front surface 24c and a rear surface 24d facing each other. A car doorway is provided on the front surface 24c.
The counterweight 25 is disposed on the side of the car 24 so as to face the first side surface 24c. The counterweight guide rail 23 is installed such that a straight line connecting the pair of counterweight guide rails 23 extends at right angles to a straight line connecting the pair of car guide rails 22 in the vertical projection plane.
A machine base 26 is supported and fixed at the upper ends of the car guide rail 22 and the counterweight guide rail 23. Mounted on the machine base 26 are first and second drive units (winding machines) 27 and 28 for raising and lowering the car 24 and the counterweight 25. The first drive device 27 includes a first drive device main body 27a including a motor, and a first drive sheave 27b rotated by the first drive device main body 27a.
The second drive device 28 has the same size and structure as the first drive device 27, and has a second drive device body 28a and a second drive sheave 28b.
As the driving devices 27 and 28, thin hoisting machines in which the diameters of the driving sheaves 27b and 28b are larger than the axial dimensions of the driving device main bodies 27a and 28a are used. The drive devices 27 and 28 are horizontally installed such that the rotation shafts of the drive sheaves 27b and 28b extend vertically. Further, the first and second driving devices 27 and 28 are disposed above the car 24 on the second side face 24b side with respect to the center of the car 24 in the opening direction. That is, the first and second driving devices 27 and 28 are disposed inside the area of the car 24 in the vertical projection plane.
The first and second drive devices 27 and 28 are arranged so that the first and second drive sheaves 27b and 28b have substantially the same height.
A first main rope 29 for suspending the car 24 and the counterweight 25 is wound around the first drive sheave 27b. Although only one first main rope 29 is shown in the figure, a plurality of ropes may be included.
A second main rope 30 for suspending the car 24 and the counterweight 25 is wound around the second drive sheave 28b. Although only one second main rope 30 is shown in the figure, it may include a plurality of ropes.
The winding angle of the first and second main ropes 29, 30 around the drive sheaves 27b, 28b is set to be larger than 90 °. More specifically, the winding angle is set to be larger than 130 °. The first and second main ropes 29 and 30 are wound around the drive sheaves 27b and 28b in a half-hanging manner.
A first car return wheel 31 that guides the first main rope 29 to the car 24 is disposed above the first side surface 24 a of the car 24. A second car return wheel 32 that guides the second main rope 30 to the car 24 is disposed above the second side surface 24 b of the car 24.
Above the counterweight 25 in the hoistway 21, a first counterweight return wheel 33 that guides the first main rope 29 to the counterweight 25 and a second main rope 30 to the counterweight 25. A second counterweight wheel 34 for guiding is arranged.
A second main rope 30 is wound around the upper part of the hoistway 21, and an auxiliary pulley 35 that increases the winding angle of the second main rope 30 around the second drive sheave 28b is disposed.
The return wheels 31 to 34 are arranged such that their rotation shafts extend horizontally. The auxiliary pulley 35 is disposed such that its rotation axis extends substantially vertically.
First and second car suspension parts 36 and 37 are provided at lower ends of the first and second side surfaces 24 a and 24 b of the car 24. The first and second car suspending portions 36 and 37 are arranged such that a straight line connecting them in the vertical projection plane passes through the center of gravity of the car 24.
The first main rope 29 has a first end portion 29a connected to the first car suspension portion 36, and a second end portion 29b connected to the upper frame 25a of the counterweight 25. Yes. The second main rope 30 has a third end portion 30 a connected to the second car suspension portion 37 and a fourth end portion 30 b connected to the upper frame 25 a of the counterweight 25. Yes.
A rope shackle 38 is connected to each of the first to fourth ends 29a, 29b, 30a, 30b. Shackle springs 39 are interposed between the rope shackle 38 and the lower surfaces of the car suspension portions 36 and 37 and the lower surface of the upper frame 25a.
Below the car 24, a first detection device 40 that detects the displacement of the rope shackle 38 in the first car suspension 36 and a first detector 40 that detects the displacement of the rope shackle 38 in the second car suspension 37. Two detection devices 41 are provided. As the first and second detection devices 40 and 41, for example, reflection type optical sensors are used. Moreover, not only a reflection type optical sensor but various contact-type or non-contact-type sensors can be used.
The machine base 26 is equipped with a control panel 42 that controls the first and second drive devices 27 and 28 and a speed governor 43 that detects an overspeed of the car 24. That is, the machine base 26 includes a control panel 42, a speed governor 43, first and second driving devices 27, 28, first and second car return wheels 31, 32, and first and second counterbalances. The return wheels 33 and 34 and the auxiliary pulley 35 are mounted.
Further, as shown in FIG. 2, the machine base 26 includes first and second driving devices 27 and 28, first and second car return wheels 31, 32, and first and second counterweights. It is installed in the vertical installation range of the cars 33 and 34. Further, the machine base 26 is supported on the upper part of the car guide rail 22 and the counterweight guide rail 23 via a plurality of support bases 44 and a plurality of buffer members 45.
In such an elevator apparatus, the car 24 and the counterweight 25 are moved up and down in the hoistway 21 by simultaneously driving the first and second drive apparatuses 27 and 28. At this time, since the first and second drive devices 27 and 28 are horizontally disposed and the car return wheels 31 and 32 and the counterweight return wheels 33 and 34 are used, the main ropes 29 and 30 are connected to the drive sheaves 27b, A sufficient winding angle can be ensured even if the belt 28b is wound halfway. Thereby, the axial load of the drive sheaves 27b and 28b can be reduced, and the support structure for the drive devices 27 and 28 and the return wheels 31 to 34 can be simplified.
In addition, since the first and second driving devices 27 and 28 are arranged so as to overlap the car 24 in the vertical projection plane, the plane size of the hoistway 21 can be kept small. In addition, since the thin hoisting machine is used as the driving devices 27 and 28, the vertical direction of the hoistway 21 is avoided while avoiding interference between the car 24 and the driving devices 27 and 28 regardless of the diameter of the driving sheaves 27b and 28b. An increase in dimensions can be suppressed. Thereby, space saving in the hoistway 21 can be achieved.
Furthermore, since the first and second detection devices 40 and 41 are disposed below the car 24, the tension difference between the first and second main ropes 29 and 30 can be monitored. The tension difference is monitored by the control panel 42. When the tension difference reaches a preset value, a command signal for eliminating the tension difference is output from the control panel 42 to the driving devices 27 and 28.
Furthermore, since the auxiliary pulley 35 is used, the winding angle of the second main rope 30 around the second drive sheave 28b can be increased, and sufficient traction capability can be ensured.
Further, the control panel 42, the speed governor 43, the first and second driving devices 27 and 28, the first and second car return wheels 31 and 32, and the first and second counterweight return wheels 33 and 34. Since the auxiliary pulley 35 is mounted on the common machine base 26, the structure can be simplified. Furthermore, the machine base 26 and the equipment mounted on the machine base 26 can be unitized to facilitate installation in the hoistway 21.
Furthermore, the machine base 26 is located above and below the first and second drive units 27, 28, the first and second car return wheels 31, 32, and the first and second counterweight return wheels 33, 34. Since it is installed in the installation range of the direction, space saving of the upper space in the hoistway 21 can be achieved.
Further, since the machine base 26 is supported on the upper part of the car guide rail 22 and the counterweight guide rail 23 via a plurality of support bases 44 and a plurality of buffer members 45, the drive units 27 and 28 and the return wheel 31 are provided. It is possible to prevent the vibrations ˜34 from being transmitted to the guide rails 22 and 23.
Furthermore, since the car suspension parts 36 and 37 are disposed at a position lower than the upper surface of the car 24 and the shackle spring 39 is disposed below the car suspension parts 36 and 37, the rope shackle 38 and the shackle spring 39 are provided in the car. The height dimension of the hoistway 21 can be reduced without being disposed so as to protrude above 24. Similarly, the height dimension of the hoistway 21 can be reduced because the shackle spring 39 is also disposed on the lower side of the upper frame 25a on the counterweight 25 side.
Furthermore, since the first and second car suspending portions 36 and 37 are arranged such that a straight line connecting them in the vertical projection plane passes through the center of gravity of the car 24, the car 24 is stably suspended. be able to.
In the first embodiment, the first and second driving devices 27 and 28 are arranged on the second side surface 24b side from the center in the front direction of the car 24. For example, the second driving device 28 is provided. May be arranged on the first side surface 24a side. In this case, the auxiliary pulley 35 is disposed in the vicinity of the first drive device 27, and a portion of the second main rope 30 that extends from the second drive sheave 28 b toward the second counterweight return wheel 34 is the auxiliary pulley 35. As a result, the winding angle of the second main rope 30 around the second drive sheave 28b can be increased.
Embodiment 2. FIG.
3 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention, and FIG. 4 is a schematic front view showing the elevator apparatus of FIG. In the figure, the counterweight 25 is disposed behind the car 24 so as to face the rear surface 24d of the car 24. The counterweight guide rail 23 is installed such that a straight line connecting the pair of counterweight guide rails 23 extends in parallel to a straight line connecting the pair of car guide rails 22 in the vertical projection plane.
The first and second driving devices 27 and 28 are disposed above the car 24 on the front surface 24c side from the center of the car 24 in the depth direction (vertical direction in FIG. 3). A portion of the first main rope 29 extending from the first drive sheave 27b to the first car return wheel 31 and a portion of the second main rope 30 extending from the second drive sheave 28b to the second car return wheel 32 And cross each other. Other configurations are the same as those in the first embodiment.
In such an elevator apparatus, the first and second driving devices 27 and 28 are horizontally arranged so as to overlap the car 24 in the vertical projection plane, and the car return wheels 31 and 32 and the counterweight return wheel. Since the main ropes 29 and 30 are guided to the car 24 and the counterweight 25 by 33 and 34, the same effect as in the first embodiment can be obtained.
Embodiment 3 FIG.
5 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention, and FIG. 6 is a schematic front view showing the elevator apparatus of FIG. In the figure, on the lower part of the car 24, rotatable first and second car return wheels are mounted. The car return wheels 51 and 52 are arranged such that their rotation shafts extend in parallel and horizontally with the depth direction of the car 24. Further, the car return wheels 51 and 52 are disposed so as to intersect the first and second side surfaces 24a and 24b in the vertical projection plane.
First and second drive sheaves 27b, 28b, first and second car return wheels 31, 32, first and second counterweight return wheels 33, 34, and first and second car suspension vehicles A main rope 53 is wound around 51 and 52. Although only one main rope 53 is shown in the figure, it includes one or a plurality of ropes.
Further, the car return wheels 51 and 52 are arranged such that the main rope 53 passing between them passes through the center of gravity of the car 24.
The main rope 53 has first and second end portions 53a and 53b. The first and second end portions 53 a and 53 b are connected to the upper frame 25 a of the counterweight 25 via a rope shackle 38 and a shackle spring 39.
In addition, the main rope 53 extends from the first end 53a to the first counterweight return wheel 33, the first drive sheave 27b, the first car return wheel 31, the first car suspension wheel 51, and the second. The car suspension wheel 52, the second car return wheel 32, the second drive sheave 28b, and the second counterweight return wheel 34 are wound in this order to reach the second end 53b.
The first and second detection devices 40 and 41 are mounted on the upper frame 25a of the counterweight 25. Other configurations are the same as those in the second embodiment.
In such an elevator apparatus, the first and second driving devices 27 and 28 are horizontally arranged so as to overlap the car 24 in the vertical projection plane, and the car return wheels 31 and 32 and the counterweight return wheel. Since the main rope 53 is guided to the car 24 and the counterweight 25 by 33 and 34, the same effect as in the first and second embodiments can be obtained.
In addition, since the car 24 is suspended by the rotatable car suspension wheels 51 and 52, the car 24 can be stably suspended. Further, the number of main ropes 53 can be reduced, and accordingly, the number of terminal connection portions of the main ropes 53 can also be reduced, and the cost can be reduced.
Embodiment 4 FIG.
7 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention, and FIG. 8 is a schematic front view showing the elevator apparatus of FIG. In the drawing, a rotatable counterweight suspension wheel 54 is mounted below the counterweight 25. The counterweight suspension wheel 54 is disposed such that its rotation axis extends in parallel and horizontally with the width direction of the counterweight 25 (the left-right direction in FIGS. 7 and 8). The counterweight suspension wheel 54 is disposed at the center of the counterweight 25 in the width direction, that is, at the center of gravity of the counterweight 25.
The first end 53 a of the main rope 53 is connected to the first car suspension 36 via a rope shackle 38 and a shackle spring 39. The second end portion 53 b of the main rope 53 is connected to the second car suspension portion 37 via a rope shackle 38 and a shackle spring 39.
Further, the main rope 53 extends from the first end portion 53a to the first car return wheel 31, the first drive sheave 27b, the first counterweight return wheel 33, the counterweight suspension wheel 54, the second The counterweight wheel 34, the second drive sheave 28b, and the second car return wheel 32 are wound in this order and reach the second end 53b. Other configurations are the same as those in the second embodiment.
In such an elevator apparatus, the first and second driving devices 27 and 28 are horizontally arranged so as to overlap the car 24 in the vertical projection plane, and the car return wheels 31 and 32 and the counterweight return wheel. Since the main rope 53 is guided to the car 24 and the counterweight 25 by 33 and 34, the same effect as in the first and second embodiments can be obtained.
In addition, since the counterweight 25 is suspended by the rotatable counterweight suspension wheel 54, the counterweight 25 can be stably suspended. Further, the number of main ropes 53 can be reduced, and accordingly, the number of terminal connection portions of the main ropes 53 can also be reduced, and the cost can be reduced.
In the fourth embodiment, the counterweight suspension vehicle 54 is mounted on the lower portion of the counterweight 25, but the counterweight suspension vehicle 54 may be mounted on the upper portion of the counterweight 25.
In the first to fourth embodiments, the machine base 26 may be fixed to the hoistway wall instead of the guide rails 22 and 23.
In addition, a steel rope may be used as the main rope, but a resin-coated rope provided with an outer layer covering made of a high-friction resin material on the outer peripheral portion can also be used. The diameter can be reduced to save space in the hoistway.
[Brief description of the drawings]
1 is a plan view showing an elevator apparatus according to Embodiment 1 of the present invention;
FIG. 2 is a schematic front view showing the elevator apparatus of FIG.
FIG. 3 is a plan view showing an elevator apparatus according to Embodiment 2 of the present invention.
FIG. 4 is a schematic front view showing the elevator apparatus of FIG.
FIG. 5 is a plan view showing an elevator apparatus according to Embodiment 3 of the present invention.
FIG. 6 is a schematic front view showing the elevator apparatus of FIG.
FIG. 7 is a plan view showing an elevator apparatus according to Embodiment 4 of the present invention.
FIG. 8 is a schematic front view showing the elevator apparatus of FIG.
FIG. 9 is a perspective view showing an example of a conventional elevator apparatus.

Claims

Having a first drive sheave, a first driving device which is arranged above the ascending descending path,
A second drive device having a second drive sheave and disposed at an upper portion in the hoistway;
A first main rope having first and second ends and wound around the first drive sheave;
A second main rope having a third and a fourth end and wound around the second drive sheave;
It is suspended from the first end of the first main rope and the third end of the second main rope, and is lifted and lowered in the hoistway by the first and second driving devices. A hoistway that is suspended from a cage, the second end of the first main rope, and the fourth end of the second main rope, and is suspended by the first and second driving devices. It has a counterweight that moves up and down,
It said first and second drive device, the rotation shaft of the upper Symbol first and second drive sheaves are horizontally arranged so as to extend vertically,
Above the car in the hoistway are a first car return wheel that guides the first main rope to the car and a second car return car that guides the second main rope to the car. Has been placed,
Above the counterweight in the hoistway, a first counterweight wheel for guiding the first main rope to the counterweight and a second main rope for guiding the counterweight to the counterweight. An elevator apparatus in which a second counterweight wheel is arranged.

The car has first and second side surfaces facing each other and front and rear surfaces facing each other,
The counterweight is arranged to face the first side surface,
The first and second driving devices are disposed so as to overlap the car in a vertical projection plane and closer to the second side surface than the center in the front direction of the car,
The first car return wheel is disposed above the first side surface,
The second car return wheel is disposed above the second side surface,
The auxiliary pulley for increasing the winding angle of the second main rope around the second drive sheave is disposed on the upper part of the hoistway. The elevator apparatus as described.

The car has first and second side surfaces facing each other and front and rear surfaces facing each other,
The counterweight is arranged to face the rear surface,
The first and second driving devices are disposed so as to overlap the car in a vertical projection plane and on the front side from the center in the depth direction of the car,
The first car return wheel is disposed above the first side surface,
The second car return wheel is disposed above the second side surface,
A portion of the first main rope extending from the first drive sheave to the first car return wheel, and a portion of the second main rope extending from the second drive sheave to the second car return wheel. The elevator apparatus according to claim 1, wherein and intersect each other.

The cage detects a displacement amount of the first end portion of the first main rope and a displacement amount of the third end portion of the second main rope. The elevator apparatus according to claim 1, wherein the second detection apparatus is mounted.

Having a first drive sheave, a first driving device which is arranged above the ascending descending path,
A second drive device having a second drive sheave and disposed at an upper portion in the hoistway; and a car and a counterweight that are raised and lowered in the hoistway by the first and second drive devices. With
It said first and second drive device, the rotation shaft of the upper Symbol first and second drive sheaves are horizontally arranged so as to extend vertically,
A main rope having first and second ends is wound around the first and second drive sheaves,
The first and second ends are connected to the counterweight;
The squirrel, the first and second car suspension car in which the main rope is wound is mounted,
Above the car in the hoistway, a first car return wheel for guiding the main rope from the first drive sheave to the first car suspension car, and the main rope for the second drive sheave. And a second car return wheel that leads to the second car suspension car.
Above the counterweight in the hoistway, a first counterweight wheel for guiding the main rope from the first drive sheave to the counterweight, and the main rope for the second drive An elevator apparatus in which a second counterweight return wheel that leads from the sheave to the counterweight is arranged.

Having a first drive sheave, a first driving device which is arranged above the ascending descending path,
A second drive device having a second drive sheave and disposed at an upper portion in the hoistway; and a car and a counterweight that are raised and lowered in the hoistway by the first and second drive devices. With
It said first and second drive device, the rotation shaft of the upper Symbol first and second drive sheaves are horizontally arranged so as to extend vertically,
A main rope having first and second ends is wound around the first and second drive sheaves,
The first end is connected to one side of the car, the second end is connected to the other side of the car;
To Ri Omo the balance is, the counterweight suspending pulley the main rope is wound is mounted,
Above the car in the hoistway, a first car return wheel for guiding the main rope from the first drive sheave to one side of the car, and the main rope from the second drive sheave to the above A second car return wheel leading to the other side of the car is arranged,
Above the counterweight in the hoistway, a first counterweight wheel for guiding the main rope from the first drive sheave to the counterweight suspension car, and the main rope for the second An elevator apparatus in which a second counterweight return wheel that leads from the drive sheave to the counterweight suspension vehicle is disposed.

The first and second drive devices each have a drive device body including a motor and the drive sheave rotated by the drive device body, and have a radial dimension larger than an axial dimension of the drive device body. The elevator apparatus according to any one of claims 1 to 6, wherein the elevator apparatus is a thin hoisting machine.

At the top of the hoistway, a machine stand is installed,
The machine base includes a control panel for controlling the first and second driving devices, a speed governor for detecting the overspeed of the car, the first and second driving devices, and the first and second driving devices. The elevator apparatus according to any one of claims 1 to 6, wherein a car return wheel and the first and second counterweight return wheels are mounted.

The machine base is installed in a vertical installation range of the first and second driving devices, the first and second car return wheels, and the first and second counterweight return vehicles. The elevator apparatus according to claim 8.

In the hoistway, a car guide rail for guiding the raising and lowering of the car and a counterweight guide rail for guiding the raising and lowering of the counterweight are installed.
9. The elevator apparatus according to claim 8, wherein the machine base is supported on at least one of the car guide rail and the counterweight guide rail via a buffer member.