JP4750104B2

JP4750104B2 - Elevator equipment

Info

Publication number: JP4750104B2
Application number: JP2007506924A
Authority: JP
Inventors: 政彦肥田; 厚光井; 洋一佐久間
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2005-03-04
Filing date: 2005-03-04
Publication date: 2011-08-17
Anticipated expiration: 2025-03-04
Also published as: JPWO2006095390A1; KR20070088542A; EP1862420B1; EP1862420A1; WO2006095390A1; CN1960934A; EP1862420A4; KR100875778B1; CN100542931C

Description

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。 The present invention relates to an elevator apparatus in which a driving device is disposed at an upper portion in a hoistway.

従来のエレベータ装置では、駆動装置の小形化を図るために、かご及び釣合おもりを吊り下げる主ロープのローピング方式を２：１ローピングとするタイプが多く採用されている。このような従来のエレベータ装置では、かご吊り車がかごに設けられ、釣合おもり吊り車が釣合おもりに設けられている。主ロープは、かご吊り車、釣合おもり吊り車及び駆動装置の駆動シーブに巻き掛けられ、その一端部及び他端部が昇降路の上部に接続されている。これにより、駆動装置にかかる軸荷重が小さくなり、駆動装置の小形化を図ることができる（特許文献１参照）。 In the conventional elevator apparatus, in order to reduce the size of the driving apparatus, a type in which the main rope roping method for suspending the car and the counterweight is 2: 1 roping is often used. In such a conventional elevator apparatus, a car suspension car is provided on the car, and a counterweight suspension car is provided on the counterweight. The main rope is wound around the car sheave, the counterweight suspension car, and the drive sheave of the drive device, and one end and the other end of the main rope are connected to the upper part of the hoistway. Thereby, the axial load concerning a drive device becomes small and it can attain size reduction of a drive device (refer to patent documents 1).

特開平１０−１３９３２１号公報JP-A-10-139321

しかし、主ロープのローピング方式が２：１ローピングの場合、駆動シーブの回転速度が１：１ローピングに比べて大きくなるので、大きな騒音が発生してしまう。 However, when the main rope roping method is 2: 1 roping, the rotational speed of the drive sheave is larger than that of 1: 1 roping, and thus a large noise is generated.

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、駆動装置にかかる軸荷重の低減を図ることができ、かつ騒音を低減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。 The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an elevator apparatus that can reduce the axial load applied to the drive device and can reduce noise. To do.

この発明によるエレベータ装置は、駆動装置本体と、上下方向へ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し、昇降路内の上部に配置された駆動装置、駆動装置の駆動力により昇降路内を昇降されるかご、第１及び第２の釣合おもりロープ接続部が設けられ、駆動装置の駆動力により昇降路内を昇降される釣合おもり、かごに設けられたかご吊り車、昇降路内の上部に配置され、かつかごの上方に配置された第１及び第２のかご側返し車、昇降路内の上部に配置され、かつ釣合おもりの上方に配置された第１及び第２の釣合おもり側返し車、及び第１の釣合おもりロープ接続部に接続された第１のロープ端部と、第２の釣合おもりロープ接続部に接続された第２のロープ端部とを有し、第１のロープ端部から、第１の釣合おもり側返し車、駆動シーブ、第１のかご側返し車、かご吊り車、第２のかご側返し車及び第２の釣合おもり側返し車の順に巻き掛けられ、第２のロープ端部に至っており、かご及び釣合おもりを昇降路内に吊り下げる主ロープを備えている。 An elevator apparatus according to the present invention includes a drive device main body and a drive sheave that is rotated by the drive device main body about a rotary shaft that extends in the vertical direction. A car that is raised and lowered in the hoistway by the driving force, a first and a second counterweight rope connecting portion are provided, and a counterweight that is raised and lowered in the hoistway by the driving force of the driving device is provided in the car A car suspension car, arranged at the upper part in the hoistway, and the first and second car side return wheels arranged above the car, arranged at the upper part in the hoistway, and arranged above the counterweight The first and second counterweight side return wheels, the first rope end connected to the first counterweight rope connecting portion, and the second connected to the second counterweight rope connecting portion. Two rope ends, from the first rope end The first counterweight side return wheel, the drive sheave, the first car side return wheel, the car suspension car, the second car side return wheel, and the second counterweight side return wheel are wound in order. The main rope is provided to suspend the car and the counterweight in the hoistway.

この発明の実施の形態１によるエレベータ装置を示す側面図である。1 is a side view showing an elevator apparatus according to Embodiment 1 of the present invention. 図１のエレベータ装置を示す平面図である。It is a top view which shows the elevator apparatus of FIG. この発明の実施の形態１によるエレベータ装置の他の例を示す平面図である。It is a top view which shows the other example of the elevator apparatus by Embodiment 1 of this invention. この発明の実施の形態２によるエレベータ装置を示す側面図である。It is a side view which shows the elevator apparatus by Embodiment 2 of this invention. この発明の実施の形態３によるエレベータ装置を示す側面図である。It is a side view which shows the elevator apparatus by Embodiment 3 of this invention.

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側面図である。図２は、図１のエレベータ装置を示す平面図である。図において、昇降路１内には、上下方向へ延びる一対のかごガイドレール２と、上下方向へ延びる一対の釣合おもりガイドレール３とが設置されている（図２）。各かごガイドレール２及び各釣合おもりガイドレール３は、昇降路１を垂直投影したときに各かごガイドレール２間を結ぶ直線が各釣合おもりガイドレール３間を結ぶ直線に対して垂直になるように、昇降路１内に配置されている。Preferred embodiments of the present invention will be described below with reference to the drawings.
Embodiment 1 FIG.
1 is a side view showing an elevator apparatus according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the elevator apparatus of FIG. In the figure, a pair of car guide rails 2 extending in the vertical direction and a pair of counterweight guide rails 3 extending in the vertical direction are installed in the hoistway 1 (FIG. 2). In each car guide rail 2 and each counterweight guide rail 3, the straight line connecting the car guide rails 2 is perpendicular to the straight line connecting the counterweight guide rails 3 when the hoistway 1 is vertically projected. It arrange | positions in the hoistway 1 so that it may become.

各かごガイドレール２間には、かご４が配置されている。また、各釣合おもりガイドレール３間には、釣合おもり５が配置されている。かご４は、各かごガイドレール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、各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。なお、かご４及び釣合おもり５は、昇降路１の垂直投影面内において、昇降路１の幅方向（各かごガイドレール２間を結ぶ直線に沿った方向）について、互いに並んで配置されている。即ち、釣合おもり５は、かご４の側方に配置されている。 A car 4 is disposed between the car guide rails 2. A counterweight 5 is disposed between the counterweight guide rails 3. The car 4 is raised and lowered in the hoistway 1 while being guided by each car guide rail 2. The counterweight 5 is moved up and down in the hoistway 1 while being guided by the respective counterweight guide rails 3. The car 4 and the counterweight 5 are arranged side by side in the vertical projection plane of the hoistway 1 in the width direction of the hoistway 1 (the direction along the straight line connecting the car guide rails 2). Yes. That is, the counterweight 5 is arranged on the side of the car 4.

昇降路１内の上部には、かご４及び釣合おもり５を昇降させるための駆動力を発生する駆動装置６が水平に設けられている。駆動装置６は、昇降路１の垂直投影面内において、かご４の領域内に配置されている。また、駆動装置６は、駆動装置本体７と、上下方向へ延びる回転軸を中心として駆動装置本体７により回転される駆動シーブ８とを有している。さらに、駆動装置６は、軸線方向（駆動シーブ８の回転軸に沿った方向）についての寸法が径方向（軸線方向に垂直な方向）についての寸法よりも小さい薄形巻上機とされている。この例では、駆動装置６は、駆動シーブ８が駆動装置本体７の上方に位置するように配置されている。 A driving device 6 that generates a driving force for raising and lowering the car 4 and the counterweight 5 is horizontally provided at an upper portion in the hoistway 1. The driving device 6 is disposed in the area of the car 4 in the vertical projection plane of the hoistway 1. The driving device 6 includes a driving device main body 7 and a driving sheave 8 that is rotated by the driving device main body 7 about a rotation shaft extending in the vertical direction. Further, the drive device 6 is a thin hoist with a dimension in the axial direction (direction along the rotation axis of the drive sheave 8) smaller than a dimension in the radial direction (direction perpendicular to the axial direction). . In this example, the drive device 6 is arranged such that the drive sheave 8 is positioned above the drive device body 7.

かご４の下部の両側には、一対のかご吊り車９，１０が設けられている。各かご吊り車９，１０は、昇降路１の垂直投影面内において、各かごガイドレール２間を結ぶ線分の中心点に関して対称になるように配置されている（図２）。 A pair of car suspension wheels 9 and 10 are provided on both sides of the lower part of the car 4. The car suspension wheels 9 and 10 are arranged so as to be symmetric with respect to the center point of the line segment connecting the car guide rails 2 in the vertical projection plane of the hoistway 1 (FIG. 2).

昇降路１内の上部で、かつかご４の上方には、第１及び第２のかご側返し車１１，１２が設けられている。第１及び第２のかご側返し車１１，１２のそれぞれは、水平方向へ延びる回転軸を中心に回転されるようになっている。第１のかご側返し車１１は、一方のかご吊り車９の上方に配置されている。また、第２のかご側返し車１２は、他方のかご吊り車１０の上方に配置されている。 First and second car side return wheels 11 and 12 are provided in the upper part of the hoistway 1 and above the car 4. Each of the first and second car-side return wheels 11 and 12 is rotated about a rotation axis extending in the horizontal direction. The first car-side return wheel 11 is arranged above one car suspension wheel 9. The second car side return wheel 12 is disposed above the other car suspension wheel 10.

釣合おもり５の上部には、釣合おもり５の幅方向へ互いに並んで配置された第１及び第２の釣合おもりロープ接続部１３，１４が設けられている。第１及び第２の釣合おもりロープ接続部１３，１４は、昇降路１の垂直投影面内において、各釣合おもりガイドレール３間を結ぶ直線上に配置されている（図２）。また、第１及び第２の釣合おもりロープ接続部１３，１４は、釣合おもり５の重心を通る鉛直線に関して互いに対称になるように配置されている。 On the upper portion of the counterweight 5, first and second counterweight rope connection portions 13 and 14 are provided that are arranged side by side in the width direction of the counterweight 5. The first and second counterweight rope connection portions 13 and 14 are arranged on a straight line connecting the counterweight guide rails 3 in the vertical projection plane of the hoistway 1 (FIG. 2). Further, the first and second counterweight rope connection portions 13 and 14 are arranged so as to be symmetric with respect to a vertical line passing through the center of gravity of the counterweight 5.

昇降路１内の上部で、かつ釣合おもり５の上方には、第１及び第２の釣合おもり側返し車１５，１６が設けられている。第１及び第２の釣合おもり側返し車１５，１６のそれぞれは、水平方向へ延びる回転軸を中心に回転されるようになっている。第１の釣合おもり側返し車１５は、第１の釣合おもりロープ接続部１３の上方に配置されている。また、第２の釣合おもり側返し車１６は、第２の釣合おもりロープ接続部１４の上方に配置されている。 First and second counterweight side return wheels 15 and 16 are provided in the upper part of the hoistway 1 and above the counterweight 5. Each of the first and second counterweight-side return wheels 15 and 16 is rotated about a rotation axis extending in the horizontal direction. The first counterweight-side return wheel 15 is disposed above the first counterweight rope connection portion 13. Further, the second counterweight-side return wheel 16 is disposed above the second counterweight rope connection portion 14.

かご４及び釣合おもり５は、複数本（図では、簡単のために１本としている）の主ロープ１７により昇降路１内に吊り下げられている。各主ロープ１７は、第１の釣合おもりロープ接続部１３に接続された第１のロープ端部１７ａと、第２の釣合おもりロープ接続部１４に接続された第２のロープ端部１７ｂとを有している。また、各主ロープ１７は、第１のロープ端部１７ａから、第１の釣合おもり側返し車１５、駆動シーブ８、第１のかご側返し車１１、一方のかご吊り車９、他方のかご吊り車１０、第２のかご側返し車１２及び第２の釣合おもり側返し車１６の順に巻き掛けられ、第２のロープ端部１７ｂに至っている。即ち、各主ロープ１７のローピング方式は、各主ロープ１７の移動距離がそのままかご４及び釣合おもり５の移動距離となる１：１ローピングとされている。 The car 4 and the counterweight 5 are suspended in the hoistway 1 by a plurality of main ropes 17 (one is shown in the figure for simplicity). Each main rope 17 includes a first rope end 17a connected to the first counterweight rope connection 13 and a second rope end 17b connected to the second counterweight rope connection 14. And have. Each main rope 17 is connected to the first counterweight side return wheel 15, the drive sheave 8, the first car side return wheel 11, one car suspension wheel 9, and the other from the first rope end 17 a. The car suspension wheel 10, the second car side return wheel 12, and the second counterweight side return wheel 16 are wound around in this order to reach the second rope end 17 b. That is, the roping method of each main rope 17 is 1: 1 roping in which the moving distance of each main rope 17 is the same as the moving distance of the car 4 and the counterweight 5.

各主ロープ１７は、鋼製の素線が複数撚り合わされることにより作製されている。各素線径は、通常の素線径よりも小さくされている。これにより、各主ロープ１７の可撓性が高められている。なお、可撓性をさらに向上させるために、各主ロープ１７を合成繊維ロープとしてもよい。 Each main rope 17 is produced by twisting a plurality of steel wires. Each strand diameter is made smaller than a normal strand diameter. Thereby, the flexibility of each main rope 17 is improved. In addition, in order to further improve flexibility, each main rope 17 may be a synthetic fiber rope.

次に、動作について説明する。駆動装置本体７により駆動シーブ８が回転されると、各主ロープ１７が駆動シーブ８の回転に応じて移動される。これにより、かご４及び釣合おもり５は、各かごガイドレール２及び各釣合おもりガイドレール３にそれぞれ案内されながら昇降路１内を昇降される。 Next, the operation will be described. When the drive sheave 8 is rotated by the drive device body 7, each main rope 17 is moved according to the rotation of the drive sheave 8. As a result, the car 4 and the counterweight 5 are moved up and down in the hoistway 1 while being guided by the car guide rails 2 and the counterweight guide rails 3, respectively.

次に、駆動シーブ８に与えられる軸荷重について説明する。かご４及び釣合おもり５が主ロープ１７により吊り下げられているので、主ロープ１７の駆動シーブ８よりも第１のロープ端部１７ａ側の部分には、第１のロープ張力Ｔ１が与えられ、主ロープ１７の駆動シーブ８よりも第２のロープ端部１７ｂ側の部分には、第２のロープ張力Ｔ２が与えられる。 Next, the axial load applied to the drive sheave 8 will be described. Since the car 4 and the counterweight 5 are suspended by the main rope 17, a first rope tension T1 is applied to a portion of the main rope 17 closer to the first rope end 17a than the drive sheave 8 is. The second rope tension T2 is applied to the portion of the main rope 17 closer to the second rope end 17b than the drive sheave 8 is.

釣合おもり５の重量Ｗ１と、第１のロープ張力Ｔ１及び第２のロープ張力Ｔ２の合計とが釣り合っているので、以下の式が成立する。
Ｔ１＋Ｔ２＝Ｗ１…（１）Since the weight W1 of the counterweight 5 and the sum of the first rope tension T1 and the second rope tension T2 are balanced, the following expression is established.
T1 + T2 = W1 (1)

駆動シーブ８に与えられる軸荷重ＭＴは、第１のロープ張力Ｔ１及び第２のロープ張力Ｔ２の合計であるので、式（１）より、以下の関係が成立する。
ＭＴ＝Ｔ１＋Ｔ２＝Ｗ１…（２）
即ち、軸荷重ＭＴは、釣合おもり５の重量Ｗ１と等しくなっている。Since the axial load MT applied to the drive sheave 8 is the sum of the first rope tension T1 and the second rope tension T2, the following relationship is established from the equation (1).
MT = T1 + T2 = W1 (2)
That is, the axial load MT is equal to the weight W1 of the counterweight 5.

なお、かご４側の総重量（かご４自体のかご重量Ｗａとかご４内の積載物の積載重量Ｗｂとを合わせた重量）Ｗ２と、一方のかご吊り車９側の第２のロープ張力Ｔ２及び他方のかご吊り車１０側の第２のロープ張力Ｔ２の合計とが釣り合っているので、第２のロープ張力Ｔ２は、以下の式で表される。
Ｔ２＝（Ｗ２）／２…（３）It should be noted that the total weight on the car 4 side (the total weight of the car weight Wa of the car 4 itself and the load weight Wb of the load in the car 4) W2 and the second rope tension T2 on the one car suspension 9 side. Since the total of the second rope tension T2 on the other car suspension wheel 10 side is balanced, the second rope tension T2 is expressed by the following equation.
T2 = (W2) / 2 (3)

また、式（１）及び式（３）より、第１のロープ張力Ｔ１は、以下の式で表される。
Ｔ１＝Ｗ１−（Ｗ２）／２…（４）
この例では、かご４側の総重量Ｗ２は、積載重量Ｗｂが最大積載重量Ｗｂｍａｘの半分のときに、釣合おもり５の重量Ｗ１とバランスするようになっている。Moreover, 1st rope tension | tensile_strength T1 is represented with the following formula | equation from Formula (1) and Formula (3).
T1 = W1- (W2) / 2 (4)
In this example, the total weight W2 on the car 4 side is balanced with the weight W1 of the counterweight 5 when the loaded weight Wb is half of the maximum loaded weight Wbmax.

ここで、第１のロープ張力Ｔ１及び第２のロープ張力Ｔ２のそれぞれの大きさは、式（３）及び式（４）から明らかなように、互いに異なることがある。従って、第１及び第２の釣合おもりロープ接続部１３，１４間の間隔が大きいほど、釣合おもり５に作用する偏荷重が大きくなり、各釣合おもりガイドレール３にかかる反力が大きくなる。このことから、第１及び第２の釣合おもりロープ接続部１３，１４間の間隔によっては、釣合おもり５の各釣合おもりガイドレール３に対する接触による騒音が大きくなったり、釣合おもりガイドレール３の寿命が摩耗により短縮したりしてしまうおそれがある。 Here, each magnitude | size of 1st rope tension | tensile_strength T1 and 2nd rope tension | tensile_strength T2 may mutually differ as evident from Formula (3) and Formula (4). Therefore, the larger the distance between the first and second counterweight rope connection portions 13, 14, the greater the unbalanced load acting on the counterweight 5, and the greater the reaction force applied to each counterweight guide rail 3. Become. Therefore, depending on the distance between the first and second counterweight rope connection portions 13 and 14, noise due to contact of the counterweight 5 with the counterweight guide rails 3 may increase, or the counterweight guide. The life of the rail 3 may be shortened due to wear.

従って、第１及び第２の釣合おもりロープ接続部１３，１４間の間隔は、釣合おもり５に作用する偏荷重により発生する悪影響、例えば騒音や釣合おもりガイドレール３の摩耗等を許容することができる所定の範囲内に設定されている。なお、この例では、第１及び第２の釣合おもりロープ接続部１３，１４は、釣合おもり５の重心を通る鉛直線に近接させて釣合おもり５に配置されている。 Accordingly, the distance between the first and second counterweight rope connection portions 13 and 14 allows for adverse effects caused by the offset load acting on the counterweight 5, such as noise and wear of the counterweight guide rail 3. It is set within a predetermined range. In this example, the first and second counterweight rope connection portions 13 and 14 are arranged on the counterweight 5 so as to be close to a vertical line passing through the center of gravity of the counterweight 5.

このようなエレベータ装置では、駆動装置６が昇降路１内の上部に水平に設けられ、かご４及び釣合おもり５を昇降路１内に吊り下げる主ロープ１７が、釣合おもり５に接続された第１のロープ端部１７ａから、第１の釣合おもり側返し車１５、駆動装置６の駆動シーブ８、第１のかご側返し車１１、一方のかご吊り車９、他方のかご吊り車１０、第２のかご側返し車１２及び第２の釣合おもり側返し車１６の順に巻き掛けられ、釣合おもり５に接続された第２のロープ端部１７ｂに至っているので、駆動シーブ８にかかる軸荷重を釣合おもり５のみの重量とすることができるとともに、主ロープ１７の移動距離をそのままかご４及び釣合おもり５の移動距離とすることができる。即ち、かご４側の総重量Ｗ２及び釣合おもり５の重量Ｗ１の両重量が駆動シーブ８に直接かかることを避けることができるとともに、主ロープ１７のローピング方式を１：１ローピングとすることにより駆動シーブ８の回転速度を小さくすることができる。従って、駆動装置６を小形化することができ、昇降路１の縮小化を図ることができる。また、駆動シーブ８の回転による騒音も低減することができる。 In such an elevator apparatus, the driving device 6 is provided horizontally at the upper part in the hoistway 1, and the main rope 17 that suspends the car 4 and the counterweight 5 in the hoistway 1 is connected to the counterweight 5. From the first rope end 17a, the first counterweight-side return wheel 15, the drive sheave 8 of the drive device 6, the first car-side return wheel 11, one car suspension car 9, and the other car suspension car. 10, the second car side return wheel 12 and the second counterweight side return wheel 16 are wound in this order and reach the second rope end 17 b connected to the counterweight 5. As a result, the weight of the counterweight 5 alone can be set as the weight of the counterweight 5 and the moving distance of the main rope 17 can be set as the moving distance of the car 4 and the counterweight 5 as it is. That is, it is possible to avoid both the total weight W2 on the car 4 side and the weight W1 of the counterweight 5 from being applied directly to the drive sheave 8, and by setting the roping method of the main rope 17 to 1: 1 roping. The rotational speed of the drive sheave 8 can be reduced. Therefore, the drive device 6 can be downsized and the hoistway 1 can be reduced. Further, noise due to rotation of the drive sheave 8 can also be reduced.

また、各かご吊り車１１，１２は、昇降路１の垂直投影面内において、各かごガイドレール２間を結ぶ線分の中心点に関して対称になるように配置されているので、主ロープ１７によりかご４を安定して吊り下げることができる。 In addition, the car suspension wheels 11 and 12 are arranged so as to be symmetric with respect to the center point of the line segment connecting the car guide rails 2 in the vertical projection plane of the hoistway 1. The car 4 can be suspended stably.

また、第１及び第２の釣合おもりロープ接続部１３，１４は、釣合おもり５の重心を通る鉛直線に関して対称に配置され、第１及び第２の釣合おもりロープ接続部１３，１４間の間隔は、所定の範囲内に設定されているので、釣合おもり５にかかる偏荷重の大きさを許容範囲内とすることができ、例えば釣合おもり５の釣合おもりガイドレール３に対する接触による騒音の抑制や釣合おもりガイドレール３の摩耗による寿命短縮の抑制を図ることができる。 The first and second counterweight rope connection portions 13 and 14 are arranged symmetrically with respect to the vertical line passing through the center of gravity of the counterweight 5, and the first and second counterweight rope connection portions 13 and 14 are arranged. Since the interval between them is set within a predetermined range, the magnitude of the unbalanced load applied to the counterweight 5 can be within the allowable range. For example, the counterweight 5 with respect to the counterweight guide rail 3 can be adjusted. It is possible to suppress the noise due to the contact and the shortening of the life due to the wear of the counterweight guide rail 3.

また、駆動装置６は、軸線方向についての寸法が径方向についての寸法よりも小さい薄形巻上機であるので、昇降路１の高さ方向についての寸法の縮小化をさらに図ることができる。 Moreover, since the drive device 6 is a thin hoist with a dimension in the axial direction smaller than a dimension in the radial direction, the dimension in the height direction of the hoistway 1 can be further reduced.

なお、上記の例では、かご吊り車９，１０がかご４の下部に設けられているが、かご４の上部にかご吊り車９，１０を設けてもよい。このようにしても、主ロープ１７によりかご４を昇降路１内に吊り下げることができる。 In the above example, the car suspension cars 9 and 10 are provided in the lower part of the car 4, but the car suspension cars 9 and 10 may be provided in the upper part of the car 4. Even in this case, the car 4 can be suspended in the hoistway 1 by the main rope 17.

また、上記の例では、釣合おもり５がかご４の側方に配置されている釣合おもり横落ちタイプのエレベータ装置にこの発明が適用されているが、図３に示すように、釣合おもり５がかご４の後方に配置されている釣合おもり後落ちタイプのエレベータ装置にこの発明を適用してもよい。この場合、昇降路１の垂直投影面内において、各かごガイドレール２間を結ぶ直線と、各釣合おもりガイドレール３間を結ぶ直線とは、互いに平行になっている。 Further, in the above example, the present invention is applied to a counterweight side-falling type elevator apparatus in which the counterweight 5 is disposed on the side of the car 4, but as shown in FIG. The present invention may be applied to a counterweight falling type elevator apparatus in which the weight 5 is disposed behind the car 4. In this case, in the vertical projection plane of the hoistway 1, the straight line connecting the car guide rails 2 and the straight line connecting the counterweight guide rails 3 are parallel to each other.

実施の形態２．
図４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側面図である。図において、かご４の下部の両側には、第１及び第２のかごロープ接続部２１，２２が設けられている。第１及び第２のかごロープ接続部２１，２２は、昇降路１の垂直投影面内において、各かごガイドレール２間を結ぶ線分の中心点に関して対称になるように配置されている。第１のかごロープ接続部２１の上方には、第１のかご側返し車１１が配置されている。第２のかごロープ接続部２２の上方には、第２のかご側返し車１２が配置されている。Embodiment 2. FIG.
FIG. 4 is a side view showing an elevator apparatus according to Embodiment 2 of the present invention. In the figure, first and second car rope connection portions 21 and 22 are provided on both sides of the lower portion of the car 4. The first and second car rope connection portions 21 and 22 are arranged so as to be symmetric with respect to the center point of the line segment connecting the car guide rails 2 in the vertical projection plane of the hoistway 1. A first car-side return wheel 11 is disposed above the first car rope connection portion 21. A second car-side return wheel 12 is disposed above the second car rope connection portion 22.

釣合おもり５の上部には、釣合おもり吊り車２３が設けられている。第１及び第２の釣合おもり側返し車１５，１６は、釣合おもり吊り車２３の上方に配置されている。 On the upper portion of the counterweight 5, a counterweight suspension wheel 23 is provided. The first and second counterweight return wheels 15 and 16 are disposed above the counterweight suspension wheel 23.

かご４及び釣合おもり５は、各主ロープ１７により昇降路１内に吊り下げられている。各主ロープ１７は、第１のかごロープ接続部２１に接続された第１のロープ端部１７ａと、第２のかごロープ接続部２２に接続された第２のロープ端部１７ｂとを有している。また、各主ロープ１７は、第１のロープ端部１７ａから、第１のかご側返し車１１、駆動シーブ８、第１の釣合おもり側返し車１５、釣合おもり吊り車２３、第２の釣合おもり側返し車１６及び第２のかご側返し車１２の順に巻き掛けられ、第２のロープ端部１７ｂに至っている。他の構成及び動作は実施の形態１と同様である。 The car 4 and the counterweight 5 are suspended in the hoistway 1 by the main ropes 17. Each main rope 17 has a first rope end 17a connected to the first car rope connection 21 and a second rope end 17b connected to the second car rope connection 22. ing. The main ropes 17 are connected to the first car end turn wheel 11, the drive sheave 8, the first counterweight side return wheel 15, the counterweight hoisting wheel 23, and the second from the first rope end 17 a. The counterweight-side return wheel 16 and the second car-side return wheel 12 are wound in this order, and reach the second rope end 17b. Other configurations and operations are the same as those in the first embodiment.

次に、駆動シーブ８に与えられる軸荷重について説明する。主ロープ１７の駆動シーブ８よりも第１のロープ端部１７ｂ側の部分には、第１のロープ張力Ｔ３が与えられ、主ロープ１７の駆動シーブ８よりも第２のロープ端部１７ａ側の部分には、第２のロープ張力Ｔ４が与えられている。 Next, the axial load applied to the drive sheave 8 will be described. A portion of the main rope 17 closer to the first rope end 17b than the drive sheave 8 is provided with a first rope tension T3, and is closer to the second rope end 17a than the drive sheave 8 of the main rope 17. The portion is given a second rope tension T4.

かご４側の総重量Ｗ２と、第１のロープ張力Ｔ３及び第２のロープ張力Ｔ４の合計とが釣り合っているので、以下の式が成立する。
Ｔ３＋Ｔ４＝Ｗ２…（５）Since the total weight W2 on the car 4 side is balanced with the sum of the first rope tension T3 and the second rope tension T4, the following equation is established.
T3 + T4 = W2 (5)

駆動シーブ８に与えられる軸荷重ＭＴは、第１のロープ張力Ｔ３及び第２のロープ張力Ｔ４の合計であるので、式（５）より、以下の関係が成立する。
ＭＴ＝Ｔ３＋Ｔ４＝Ｗ２…（６）
即ち、軸荷重ＭＴは、かご４側の総重量Ｗ２と等しくなっている。Since the axial load MT applied to the drive sheave 8 is the sum of the first rope tension T3 and the second rope tension T4, the following relationship is established from the equation (5).
MT = T3 + T4 = W2 (6)
That is, the axial load MT is equal to the total weight W2 on the car 4 side.

なお、実施の形態１と同様にして、第１のロープ張力Ｔ３及び第２のロープ張力Ｔ４は、それぞれ以下の式で表される。
Ｔ３＝（Ｗ１）／２…（７）
Ｔ４＝Ｗ２−（Ｗ１）／２…（８）In the same manner as in the first embodiment, the first rope tension T3 and the second rope tension T4 are represented by the following equations, respectively.
T3 = (W1) / 2 (7)
T4 = W2- (W1) / 2 (8)

このように、第１及び第２のかごロープ接続部２１，２２がかご４に設けられ、釣合おもり吊り車２３が釣合おもり５に設けられているとともに、かご４及び釣合おもり５を吊り下げる主ロープ１７が、第１のかごロープ接続部２１に接続された第１のロープ端部１７ａから、第１のかご側返し車１１、駆動シーブ８、第１の釣合おもり側返し車１５、釣合おもり吊り車２３、第２の釣合おもり側返し車１６及び第２のかご側返し車１２の順に巻き掛けられ、第２のかごロープ接続部２２に接続された第２のロープ端部１７ｂに至っているので、実施の形態１と同様に、かご４側の総重量Ｗ２及び釣合おもり５の重量Ｗ１の両重量が駆動シーブ８に直接かかることを避けることができるとともに、主ロープ１７のローピング方式を１：１ローピングとすることにより駆動シーブ８の回転速度を小さくすることができる。これにより、駆動装置６にかかる軸荷重の低減を図ることができ、かつ騒音を低減することができる。 Thus, the first and second car rope connecting portions 21 and 22 are provided on the car 4, the counterweight suspension wheel 23 is provided on the counterweight 5, and the car 4 and the counterweight 5 are connected to each other. The main rope 17 to be suspended from the first rope end 17a connected to the first car rope connection portion 21 is the first car-side return wheel 11, the drive sheave 8, and the first counterweight-side return wheel. 15, the second rope connected to the second car rope connecting portion 22 by being wound in the order of the counterweight suspension wheel 23, the second counterweight side return wheel 16 and the second car side return wheel 12. Since the end portion 17b is reached, it is possible to avoid both the total weight W2 of the car 4 side and the weight W1 of the counterweight 5 from being directly applied to the drive sheave 8 as in the first embodiment. The rope 17 roping method is 1: 1 low It is possible to reduce the rotational speed of the drive sheave 8 by a ring. Thereby, reduction of the axial load concerning the drive device 6 can be aimed at, and noise can be reduced.

また、第１及び第２のかごロープ接続部２１，２２は、昇降路１の垂直投影面内において、各かごガイドレール２間を結ぶ線分の中心点に関して対称になるように配置されているので、主ロープ１７によりかご４を安定して吊り下げることができる。 The first and second car rope connection portions 21 and 22 are arranged so as to be symmetric with respect to the center point of the line segment connecting the car guide rails 2 in the vertical projection plane of the hoistway 1. Therefore, the car 4 can be stably suspended by the main rope 17.

実施の形態３．
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側面図である。図において、釣合おもり５の上部には、釣合おもり５の幅方向へ互いに並んで配置された第１及び第２の釣合おもりロープ接続部１３，１４が設けられている。かご４及び釣合おもり５は、第１の主ロープ３２及び第２の主ロープ３３を有する主ロープ体３１により昇降路１内に吊り下げられている。Embodiment 3 FIG.
FIG. 5 is a side view showing an elevator apparatus according to Embodiment 3 of the present invention. In the figure, on the upper part of the counterweight 5, first and second counterweight rope connection portions 13, 14 arranged side by side in the width direction of the counterweight 5 are provided. The car 4 and the counterweight 5 are suspended in the hoistway 1 by a main rope body 31 having a first main rope 32 and a second main rope 33.

第１の主ロープ３２は、第１のかごロープ接続部２１に接続された第１のロープ端部３２ａと、第１の釣合おもりロープ接続部１３に接続された第２のロープ端部３２ｂとを有している。また、第１の主ロープ３２は、第１のロープ端部３２ａから、第１のかご側返し車１１、駆動シーブ８及び第１の釣合おもり側返し車１５の順に巻き掛けられ、第２のロープ端部３２ｂに至っている。 The first main rope 32 includes a first rope end portion 32 a connected to the first car rope connection portion 21 and a second rope end portion 32 b connected to the first counterweight rope connection portion 13. And have. The first main rope 32 is wound from the first rope end 32a in the order of the first car side return wheel 11, the drive sheave 8, and the first counterweight side return wheel 15 in order. To the rope end 32b.

第２の主ロープ３３は、第２のかごロープ接続部２２に接続された第３のロープ端部３３ａと、第２の釣合おもりロープ接続部１４に接続された第４のロープ端部３３ｂとを有している。また、第２の主ロープ３３は、第３のロープ端部３３ａから、第２のかご側返し車１２及び第２の釣合おもり側返し車１６の順に巻き掛けられ、第４のロープ端部３３ｂに至っている。即ち、第２の主ロープ３３は、駆動シーブ８を避けて、第２のかご側返し車１２及び第２の釣合おもり側返し車１６に巻き掛けられている。他の構成は実施の形態２と同様である。 The second main rope 33 includes a third rope end 33 a connected to the second car rope connection portion 22 and a fourth rope end 33 b connected to the second counterweight rope connection portion 14. And have. The second main rope 33 is wound around the third rope end 33a, the second car side return wheel 12 and the second counterweight side return wheel 16 in this order, and the fourth rope end portion. 33b. That is, the second main rope 33 is wound around the second car side return wheel 12 and the second counterweight side return wheel 16, avoiding the drive sheave 8. Other configurations are the same as those of the second embodiment.

主ロープ体３１は、釣合おもり５の重量Ｗ１及びかご４側の総重量Ｗ２の合計重量を第１及び第２の主ロープ３２，３３で分担して吊り下げるようになっている。また、駆動シーブ８に作用する軸荷重は、第１の主ロープ３２の張力のみにより与えられる。即ち、駆動シーブ８に作用する軸荷重は、釣合おもり５の重量Ｗ１及びかご４側の総重量Ｗ２の合計重量のうち、第１の主ロープ３２が負担する一部の重量分のみである。 The main rope body 31 is suspended by sharing the total weight of the weight W1 of the counterweight 5 and the total weight W2 on the side of the car 4 with the first and second main ropes 32 and 33. Further, the axial load acting on the drive sheave 8 is given only by the tension of the first main rope 32. That is, the axial load acting on the drive sheave 8 is only a portion of the total weight of the weight W1 of the counterweight 5 and the total weight W2 on the side of the car 4 that the first main rope 32 bears. .

このように、第１及び第２のかごロープ接続部２１，２２がかご４に設けられ、第１及び第２の釣合おもりロープ接続部１３，１４が釣合おもり５に設けられているとともに、かご４及び釣合おもり５を吊り下げる主ロープ体３１は、駆動シーブ８に巻き掛けられ、第１のかごロープ接続部２１及び第１の釣合おもりロープ接続部１３に接続された第１の主ロープ３２と、駆動シーブ８を避けて、第２のかごロープ接続部２２及び第２の釣合おもりロープ接続部１４に接続された第２の主ロープ３３とを有しているので、第１及び第２の主ロープ３２，３３により分担してかご４及び釣合おもり５を吊り下げることができ、かご４側の総重量Ｗ２及び釣合おもり５の重量Ｗ１の両重量が駆動シーブ８に直接かかることを避けることができる。また、主ロープ１７のローピング方式を１：１ローピングとすることにより、駆動シーブ８の回転速度を小さくすることができる。これにより、駆動装置６にかかる軸荷重の低減を図ることができ、かつ騒音を低減することができる。 As described above, the first and second car rope connection portions 21 and 22 are provided in the car 4, and the first and second counterweight rope connection portions 13 and 14 are provided in the counterweight 5. The main rope body 31 for suspending the car 4 and the counterweight 5 is wound around the drive sheave 8 and is connected to the first car rope connection portion 21 and the first counterweight rope connection portion 13. Main rope 32 and the second main rope 33 connected to the second car rope connecting portion 22 and the second counterweight rope connecting portion 14 while avoiding the drive sheave 8. The car 4 and the counterweight 5 can be suspended by the first and second main ropes 32 and 33, and the total weight W2 on the car 4 side and the weight W1 of the counterweight 5 are both driven sheaves. 8 can be avoided directly. Moreover, the rotational speed of the drive sheave 8 can be reduced by setting the roping method of the main rope 17 to 1: 1 roping. Thereby, reduction of the axial load concerning the drive device 6 can be aimed at, and noise can be reduced.

なお、実施の形態１及び２では、釣合おもり５がかご４の側方に配置されている釣合おもり横落ちタイプのエレベータ装置にこの発明が適用されているが、釣合おもり５がかご４の後方に配置されている釣合おもり後落ちタイプのエレベータ装置にこの発明を適用してもよい。 In the first and second embodiments, the present invention is applied to a counterweight side-falling type elevator apparatus in which the counterweight 5 is arranged on the side of the car 4, but the counterweight 5 is the car. The present invention may be applied to a counterweight falling type elevator apparatus disposed behind the counterweight 4.

また、実施の形態１及び３では、第１及び第２の釣合おもりロープ接続部１３，１４が釣合おもり５の幅方向へ互いに並んで配置されているが、第１及び第２の釣合おもりロープ接続部１３，１４を釣合おもり５の厚さ方向へ並べて配置してもよい。この場合、第１及び第２の釣合おもりロープ接続部１３，１４は、釣合おもり５の重心を通る鉛直線に関して互いに対称になるように配置される。また、第１及び第２の釣合おもりロープ接続部１３，１４間の間隔は、所定の範囲内に設定される。このようにしても、釣合おもり５にかかる偏荷重の大きさを許容範囲内とすることができる。 In the first and third embodiments, the first and second counterweight rope connection portions 13 and 14 are arranged side by side in the width direction of the counterweight 5. The counterweight rope connecting portions 13 and 14 may be arranged side by side in the thickness direction of the counterweight 5. In this case, the first and second counterweight rope connection portions 13 and 14 are arranged so as to be symmetric with respect to a vertical line passing through the center of gravity of the counterweight 5. Moreover, the space | interval between the 1st and 2nd counterweight rope connection parts 13 and 14 is set in the predetermined range. Even in this case, the magnitude of the offset load applied to the counterweight 5 can be within the allowable range.

また、実施の形態１及び３では、第１及び第２の釣合おもりロープ接続部１３，１４が釣合おもり５の幅方向へ互いに並んで配置されているが、釣合おもり５の重心を通る鉛直線に関して対称となるように複数（偶数個）の第１の釣合おもりロープ接続部１３を配置し、かつ、釣合おもり５の重心を通る鉛直線に関して対称となるように複数（偶数個）の第２の釣合おもりロープ接続部１４を配置してもよい。このようにすれば、第１のロープ張力Ｔ１及び第２のロープ張力Ｔ２のそれぞれの大きさが互いに異なっているときでも、釣合おもり５に作用する偏荷重の発生を防止することができる。

In the first and third embodiments, the first and second counterweight rope connection portions 13 and 14 are arranged side by side in the width direction of the counterweight 5. A plurality (even number) of first counterweight rope connection portions 13 are arranged so as to be symmetric with respect to the passing vertical line, and a plurality (even number) are symmetric with respect to the vertical line passing through the center of gravity of the counterweight 5. ) Second counterweight rope connection 14 may be arranged. In this way, even when the magnitudes of the first rope tension T1 and the second rope tension T2 are different from each other, it is possible to prevent the occurrence of an unbalanced load acting on the counterweight 5.

Claims

A driving device having a driving device main body and a driving sheave rotated by the driving device main body about a rotation axis extending in the vertical direction, and disposed at an upper portion in the hoistway;
A car that is raised and lowered in the hoistway by the driving force of the driving device;
First and second counterweight rope connection portions are provided, and the counterweight is lifted and lowered in the hoistway by the driving force of the driving device;
A car suspension car provided in the car,
First and second car side return wheels arranged at the top of the hoistway and above the car;
First and second counterweight return pulleys disposed above the counterweight and disposed above the counterweight, and connected to the first counterweight rope connection portion. 1 rope end portion and a second rope end portion connected to the second counterweight rope connection portion, and from the first rope end portion to the first counterweight side return The second rope is wound around the vehicle, the drive sheave, the first car side return wheel, the car suspension car, the second car side return car, and the second counterweight side return car. An elevator apparatus comprising a main rope that reaches the end and suspends the car and the counterweight in the hoistway.

A driving device having a driving device main body and a driving sheave rotated by the driving device main body about a rotation axis extending in the vertical direction, and disposed at an upper portion in the hoistway;
A car which is provided with first and second car rope connection parts and which is raised and lowered in the hoistway by the driving force of the driving device;
A counterweight that is raised and lowered in the hoistway by the driving force of the driving device;
A counterweight suspension car provided on the counterweight,
First and second car side return wheels arranged at the top of the hoistway and above the car;
The first and second counterweight-side return wheels disposed at the upper part in the hoistway and above the counterweight, and the first connected to the first car rope connecting portion A rope end portion and a second rope end portion connected to the second car rope connection portion; from the first rope end portion, the first car side return wheel, the drive sheave, The first counterweight side return wheel, the counterweight suspension car, the second counterweight return wheel, and the second car side return wheel are wound in this order, and the second rope end portion is wound around the second rope end portion. An elevator apparatus, comprising: a main rope that extends and suspends the car and the counterweight in the hoistway.

A driving device having a driving device main body and a driving sheave rotated by the driving device main body about a rotation axis extending in the vertical direction, and disposed at an upper portion in the hoistway;
First and second car rope connection portions are provided, and a car that is raised and lowered in the hoistway by the driving force of the drive device. First and second counterweight rope connection portions are provided, and A counterweight that is raised and lowered in the hoistway by a driving force,
First and second car side return wheels arranged at the top of the hoistway and above the car;
The first and second counterweight-side return wheels disposed at the upper part in the hoistway and above the counterweight, and the first connected to the first car rope connecting portion A rope end portion and a second rope end portion connected to the first counterweight rope connection portion, from the first rope end portion to the first car side return wheel, the drive sheave, and A first main rope wound around the first counterweight-side return wheel and reaching the second rope end, and a third rope end connected to the second car rope connecting portion And a fourth rope end connected to the second counterweight rope connecting portion, and from the third rope end, the second car side return wheel and the second counterbalance The second main row that is wound in the order of the weight-side return wheel and reaches the end of the fourth rope. And a main rope body for suspending the car and the counterweight in the hoistway.

A pair of car guide rails for guiding the car is provided in the hoistway,
The car is provided with a pair of car suspension wheels,
2. Each said car suspension vehicle is arrange | positioned so that it may become symmetrical with respect to the center point of the line segment which mutually connects each said car guide rail in the vertical projection surface of the said hoistway. Elevator equipment.

A pair of car guide rails for guiding the car is provided in the hoistway,
The first and second car rope connection portions are arranged so as to be symmetric with respect to a center point of a line segment connecting the car guide rails to each other in the vertical projection plane of the hoistway. The elevator apparatus of Claim 2 or Claim 3 to do.

The first and second counterweight rope connection portions are arranged symmetrically with respect to a vertical line passing through the center of gravity of the counterweight, and a distance between the first and second counterweight rope connection portions is predetermined. The elevator apparatus according to claim 1, wherein the elevator apparatus is set within the range of the above.

The counterweight is provided with an even number of the first counterweight rope connection portions and an even number of the second counterweight rope connection portions,
Each of the first counterweight connecting portions is arranged symmetrically with respect to a vertical line passing through the center of gravity of the counterweight, and each of the second counterweight connecting portions is arranged symmetrically with respect to the vertical line. The elevator apparatus according to claim 1 or 3, wherein the elevator apparatus is provided.

The said drive device is a thin hoisting machine whose dimension about the axial direction along the said rotating shaft is smaller than the dimension about the radial direction perpendicular | vertical to the said rotating shaft. The elevator apparatus in any one of.