JP2012153487A - Elevator device - Google Patents

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JP2012153487A
JP2012153487A JP2011014195A JP2011014195A JP2012153487A JP 2012153487 A JP2012153487 A JP 2012153487A JP 2011014195 A JP2011014195 A JP 2011014195A JP 2011014195 A JP2011014195 A JP 2011014195A JP 2012153487 A JP2012153487 A JP 2012153487A
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car
rope
slide body
weight
counterweight
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JP5468029B2 (en
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Yuji Sakai
悠至 酒井
Hidetaka Zama
秀隆 座間
Kaoru Hirano
薫 平野
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Hitachi Ltd
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Hitachi Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide an elevator device capable of correcting a level shift of a car with less drive power.SOLUTION: This elevator device for correcting a level shift between a floor surface 2b of a car 2 and a floor surface 11a of a landing floor 11 by pulling up or pulling down a rope 4 by a car position adjustment unit 6 arranged above a lifting track of the car 2 is structured such that pulleys 7a, 7b around which an weight side of the rope is wound are arranged above the car position adjustment unit; the rope is arranged on a slide body 6a of the car position adjustment unit in a loop-like form by connecting a car-side rope end of the rope and an weight-side rope end of the rope to each other to face each other; the slide body is lifted by using mass of a counterweight when the car is lifted; and the slide body is lowered by using the mass of the car when the car is lowered.

Description

本発明は、乗かごのレベルずれを修正可能なエレベータ装置に関する。   The present invention relates to an elevator apparatus capable of correcting a level shift of a car.

乗かごの床面と着床階の床面とのレベルずれを修正するものとして従来、乗かご昇降軌道上方に、かご側ロープエンドが連結されるかご位置調整手段を配置し、かご位置調整手段によりロープを引き上げて又は引き下げて、乗かごの位置を調整するものや（例えば、特許文献１、２参照）、乗かごとつり合おもりが吊持されたロープをシーブに巻き掛けるとともに、そらせ車によりそらせるようにし、シーブを駆動させることにより乗かごを昇降させるエレベータにおいて、そらせ車の回動中心を移動させるための移動機構を備え、レベルずれ修正手段により移動機構を制御し、乗かごの位置を調整するものが挙げられる（例えば、特許文献３参照）。   Conventionally, a car position adjusting means to which the car-side rope end is connected is arranged above the car ascending / descending track to correct the level deviation between the floor of the car and the floor of the landing floor. Pull up or pull down the rope to adjust the position of the car (for example, see Patent Documents 1 and 2), wrap a rope around which the car and the counterweight are suspended, and wind it around the sheave. In an elevator that moves the car up and down by driving the sheave, the elevator is provided with a moving mechanism for moving the turning center of the deflecting wheel, and the moving mechanism is controlled by the level deviation correcting means, and the position of the car (For example, refer patent document 3).

特開昭６１−１３０１９０（第２頁、第１図）JP 61-130190 (2nd page, Fig. 1) 特開２００８−１３７７５６（段落番号００１１〜００１９、図１）JP 2008-137756 (paragraph numbers 0011 to 0019, FIG. 1) 特開平８−５９１０６（段落番号００１９〜００２１、図１）JP-A-8-59106 (paragraph numbers 0019 to 0021, FIG. 1)

しかしながら、前述した従来のものは、重量物である乗かごやつり合いおもり、又はかご内の積載荷重の荷重がかかるロープを、かご位置調整手段により上下動させたり、移動機構により変位させたりすることから、装置には大きな駆動力が必要であり、装置の大型化を招くとともに、設備コストがかかるという問題があった。   However, in the above-mentioned conventional one, a heavy load car, a counterweight, or a rope that is loaded with a load of load in the car is moved up and down by the car position adjusting means or displaced by the moving mechanism. The apparatus requires a large driving force, which causes a problem of increasing the size of the apparatus and increasing the equipment cost.

本発明は、前述した従来技術における実状からなされたもので、その目的は、より少ない駆動力で乗かごのレベルずれを修正することのできるエレベータ装置を提供することにある。   The present invention has been made from the above-described actual state of the prior art, and an object thereof is to provide an elevator apparatus capable of correcting a level shift of a car with a smaller driving force.

前記目的を達成するために、本発明は、昇降路を昇降する乗かごおよびつり合いおもりと、これらの乗かごおよびつり合いおもりが吊持されたロープを駆動する巻上機と、前記乗かごの昇降軌道上方に配置され、スライド体に連結された前記ロープを引き上げて又は引き下げて、前記乗かごの床面と着床階の床面とのレベルずれを修正するかご位置調整手段とを備えたエレベータ装置において、前記かご位置調整手段より上方に、前記ロープのおもり側が巻き掛けられるプーリを配置するとともに、前記スライド体に、前記ロープのかご側ロープエンド、および前記ロープのおもり側ロープエンドを互いに向き合うように連結し、前記ロープをループ状に配したことを特徴としている。   In order to achieve the above object, the present invention provides a car and a counterweight that ascend and descend a hoistway, a hoist that drives a rope on which these car and counterweight are suspended, and an elevator that lifts the car. An elevator provided with a car position adjusting means for correcting a level shift between the floor surface of the passenger car and the floor surface of the landing floor by lifting or lowering the rope connected to the slide body and arranged above the track In the apparatus, a pulley around which the weight side of the rope is wound is disposed above the car position adjusting means, and the rope-side rope end of the rope and the weight-side rope end of the rope face each other on the slide body. And the ropes are arranged in a loop shape.

このように構成した本発明では、ロープのおもり側をかご位置調整手段より上方に配置されたプーリに巻き掛けるとともに、かご側ロープエンド、およびおもり側ロープエンドを互いに向かい合うようにかご位置調整手段のスライド体に連結してロープをループ状に配し、スライド体を上下させて乗かごの床面と着床階の床面とのレベルずれを修正する。これによって、乗かごを上昇させる場合は、つり合いおもりの質量を利用してスライド体を上昇させるとともに、乗かごを下降させる場合は、乗かごの質量を利用してスライド体を下降させることになり、したがって、より少ない駆動力で乗かごのレベルずれを修正することができる。   In the present invention configured as described above, the weight side of the rope is wrapped around a pulley disposed above the car position adjusting means, and the car side rope end and the weight side rope end of the car position adjusting means are opposed to each other. Connect to the slide body, arrange the rope in a loop, and move the slide body up and down to correct the level shift between the floor of the car and the floor of the landing floor. As a result, when the car is raised, the slide body is lifted using the mass of the counterweight, and when the car is lowered, the slide body is lowered using the weight of the car. Therefore, the level deviation of the car can be corrected with a smaller driving force.

本発明によれば、より少ない駆動力で乗かごのレベルずれを修正することができ、これによって、装置の小型化、およびコストの低減を図ることができる。   According to the present invention, the level difference of the car can be corrected with a smaller driving force, and thereby the apparatus can be downsized and the cost can be reduced.

本発明に係るエレベータ装置の一実施例を示す概略構成図である。1 is a schematic configuration diagram illustrating an embodiment of an elevator apparatus according to the present invention. 本実施例のエレベータ装置に備えられるかご位置調整手段の詳細構成図である。It is a detailed block diagram of the car position adjustment means with which the elevator apparatus of a present Example is equipped. 本実施例のエレベータ装置において乗かごが所定位置より下降してレベルずれが生じた状態を示す概略構成図である。It is a schematic block diagram which shows the state in which the passenger car descended from a predetermined position and a level shift occurred in the elevator apparatus of the present embodiment. 本実施例のエレベータ装置において乗かごが所定位置より上昇してレベルずれが生じた状態を示す概略構成図である。It is a schematic block diagram which shows the state in which the passenger | crew raised from the predetermined position and the level shift | offset | difference occurred in the elevator apparatus of a present Example. 本実施例におけるかご位置調整手段のスライド体を上昇させた状態を示す詳細構成図である。It is a detailed block diagram which shows the state which raised the slide body of the cage position adjustment means in a present Example. 本実施例におけるかご位置調整手段のスライド体を下降させた状態を示す詳細構成図である。It is a detailed block diagram which shows the state which lowered | hung the slide body of the cage position adjustment means in a present Example.

以下、本発明に係るエレベータ装置の実施例を図に基づき説明する。   Embodiments of an elevator apparatus according to the present invention will be described below with reference to the drawings.

本実施例のエレベータ装置は、図１に示すように、昇降路１を昇降する乗かご２およびつり合いおもり３と、乗かご２上部のかご上プーリ２ａ、およびつり合いおもり３上部のおもり上プーリ３ａに巻き掛けられ、乗かご２およびつり合いおもり３を吊持するロープ４と、シーブ５ａに巻き掛けられたロープ４を駆動する巻上機５と、乗かご２の昇降軌道上方に配置され、連結されたロープ４を引き上げて又は引き下げて、乗かご２の床面と着床階の床面とのレベルずれを修正するかご位置調整手段６とを備えている。   As shown in FIG. 1, the elevator apparatus of the present embodiment includes a car 2 and a counterweight 3 that move up and down the hoistway 1, a car upper pulley 2 a at the upper part of the car 2, and a pulley on the weight 3 a at the upper part of the counterweight 3. A rope 4 that hangs around the car 2 and the counterweight 3, a hoisting machine 5 that drives the rope 4 hung around the sheave 5a, and an upper and lower trajectory of the car 2 that are connected to each other. A car position adjusting means 6 for correcting a level shift between the floor surface of the car 2 and the floor surface of the landing floor by lifting or lowering the rope 4 is provided.

かご位置調整手段６より上方にプーリ７ａ、７ｂが配置され、ロープ４のおもり側が巻き掛けられている。   Pulleys 7 a and 7 b are disposed above the car position adjusting means 6, and the weight side of the rope 4 is wound around.

かご位置調整手段６は、図２に示すように、ロープ４のかご側ロープエンド４ａ、およびロープ４のおもり側ロープエンド４ｂのそれぞれが互いに向き合うようにして連結されるスライド体６ａと、スライド体６ａに連結され、２系統の油圧回路を有する複動型の油圧システム６ｂとを備えている。   As shown in FIG. 2, the car position adjusting means 6 includes a slide body 6 a connected so that the car side rope end 4 a of the rope 4 and the weight side rope end 4 b of the rope 4 face each other, and a slide body And a double-acting hydraulic system 6b having two hydraulic circuits.

スライド体６ａには、複数の貫通孔６ａ１が形成され、ロープ４のかご側ロープエンド４ａが、貫通孔６ａ１に挿通されるソケット８ａ、およびソケット８ａ端部とスライド体６ａ上面との間に介設されるばね９ａを介してスライド体６ａに連結されるとともに、ロープ４のおもり側ロープエンド４ｂが、貫通孔６ａ１に挿通されるソケット８ｂ、およびソケット８ｂ端部とスライド体６ａ下面との間に介設されるばね９ｂを介してスライド体６ａに連結され、ロープ４はループ状に配されることになる。そして、巻上機５からおもり上プーリ３ａ、プーリ７ａ、７ｂを介しスライド体６ａに連結されるおもり側のロープ４は、スライド体６ａを引き上げる方向に力を作用させ、一方、巻上機５からかご上プーリ２ａを介しスライド体６ａに連結されるかご側のロープ４は、スライド体６ａを引き下げる方向に力を作用させる。   A plurality of through holes 6a1 are formed in the slide body 6a, and the cage-side rope end 4a of the rope 4 is interposed between the socket 8a inserted through the through hole 6a1 and the end of the socket 8a and the upper surface of the slide body 6a. It is connected to the slide body 6a via the spring 9a provided, and the weight side rope end 4b of the rope 4 is inserted into the through hole 6a1 between the socket 8b and the end of the socket 8b and the lower surface of the slide body 6a. The rope 4 is arranged in a loop shape by being connected to the slide body 6a via a spring 9b interposed therebetween. The rope 4 on the weight side connected to the slide body 6a from the hoisting machine 5 via the weight upper pulley 3a and the pulleys 7a, 7b applies a force in the direction of pulling up the slide body 6a, while the hoisting machine 5 The car-side rope 4 connected to the slide body 6a via the upper car pulley 2a applies a force in a direction to pull down the slide body 6a.

油圧システム６ｂは、図２に示すように、スライド体６ａの一端にその上端が連結されるプランジャ６ｂ１と、このプランジャ６ｂ１が挿入される油圧シリンダ６ｂ２と、油圧シリンダ６ｂ２と２系統のパイプ６ｂ３、および切替えバルブ６ｂ４を介して接続されるとともに、作動油を加減圧する油圧ポンプ６ｂ５とを備えている。なお、スライド体６ａの他端には、油圧システム６ｂに同期して上下可能な支柱体１０が配置されている。   As shown in FIG. 2, the hydraulic system 6b includes a plunger 6b1 whose upper end is connected to one end of a slide body 6a, a hydraulic cylinder 6b2 into which the plunger 6b1 is inserted, a hydraulic cylinder 6b2 and two pipes 6b3, And a hydraulic pump 6b5 that is connected via a switching valve 6b4 and that boosts or depressurizes the hydraulic oil. In addition, the support | pillar body 10 which can be moved up and down synchronizing with the hydraulic system 6b is arrange | positioned at the other end of the slide body 6a.

本実施例にあっては、乗かご２が着床階１１に着床した後、乗かご２内に乗り込む乗客や積み込まれる荷物によりロープ４に伸びが生じ、図３に示すように、乗かご２の床面２ｂと着床階１１の床面１１ａとの間にレベルずれが生じると、図示しない制御手段を介して、図５に示すように、油圧ポンプ６ｂ５から切替えバルブ６ｂ４、およびパイプ６ｂ３を介して油圧シリンダ６ｂ２の下部へ作動油が送り込まれるとともに、油圧シリンダ６ｂ２上部からパイプ６ｂ３、および切替えバルブ６ｂ４を介して作動油が送り出され、プランジャ６ｂ１が押し上げられる。これによって、図１に示すように、スライド体６ａおよびロープ４が引き上げられるとともに、乗かご２の床面２ｂが上昇し、着床階１１の床面１１ａとのレベルずれが修正される。このとき、乗かご２の質量をＭ、乗かご２の積載量をＭとした場合、一般に、つり合いおもり３の質量は、乗かご２の質量と乗かご２の積載量の２分の１とを合計した値に設定されることから、（１）式が成立する。   In this embodiment, after the car 2 has landed on the landing floor 11, the rope 4 is stretched by passengers entering the car 2 or loaded luggage, and as shown in FIG. If a level shift occurs between the floor surface 2b of the floor 2 and the floor surface 11a of the landing floor 11, as shown in FIG. 5, the control valve 6b4 and the pipe 6b3 are switched from the hydraulic pump 6b5 via a control means (not shown). The hydraulic oil is sent to the lower part of the hydraulic cylinder 6b2 via the hydraulic cylinder 6 and the hydraulic oil is sent from the upper part of the hydraulic cylinder 6b2 via the pipe 6b3 and the switching valve 6b4 to push up the plunger 6b1. Thereby, as shown in FIG. 1, the slide body 6 a and the rope 4 are pulled up, the floor surface 2 b of the car 2 is raised, and the level deviation from the floor surface 11 a of the landing floor 11 is corrected. At this time, assuming that the weight of the car 2 is M and the load capacity of the car 2 is M, the weight of the counterweight 3 is generally one half of the weight of the car 2 and the load capacity of the car 2. Is set to a total value, the formula (1) is established.

Figure 2012153487
この場合、スライド体６ａを引き上げ、乗かご２を上昇させるために要する上向きの力は、乗かご２の質量と乗かご２の積載量とを合計した値からつり合いおもり３の質量を差し引いた値に、図示したような２対１ローピングにあっては乗かご２およびつり合いおもり３の駆動に要する駆動力が１対１ローピングと比較して２分の１となることから（２）式が成立する。
Figure 2012153487
In this case, the upward force required to pull up the slide body 6a and raise the car 2 is a value obtained by subtracting the mass of the counterweight 3 from the sum of the mass of the car 2 and the loading capacity of the car 2. Furthermore, in the case of 2-to-1 roping as shown in the figure, since the driving force required to drive the car 2 and the counterweight 3 is half that of 1-to-1 roping, equation (2) is established. To do.

Figure 2012153487
一方、かご側ロープエンドのみをかご位置調整手段に連結し、おもり側ロープエンドを建屋側に連結した従来のものは、同一条件で乗かご２を上昇させるために要する上向きの力は、乗かご２の質量と乗かご２の積載量とを合計した値に、２対１ローピングの比率が適用され、（３）式が成立する。
Figure 2012153487
On the other hand, in the conventional case where only the car side rope end is connected to the car position adjusting means and the weight side rope end is connected to the building side, the upward force required to raise the car 2 under the same condition is A ratio of 2 to 1 roping is applied to a value obtained by summing the mass of 2 and the loading capacity of the car 2, and Equation (3) is established.

Figure 2012153487
したがって、本発明を適用した場合、乗かご２を上昇させレベルずれを修正するために要する力は、従来のものと比べて４分の１でよい。
Figure 2012153487
Therefore, when the present invention is applied, the force required to raise the car 2 and correct the level deviation may be one-fourth that of the conventional one.

一方、乗かご２が着床階１１に着床した後、乗かご２内の乗客が降りたり、積み込まれていた荷物が乗かご２外に搬出されることによりロープ４が収縮し、図４に示すように、乗かご２の床面２ｂと着床階１１の床面１１ａとの間にレベルずれが生じると、図示しない制御手段を介して、図６に示すように、油圧ポンプ６ｂ５から切替えバルブ６ｂ４、およびパイプ６ｂ３を介して油圧シリンダ６ｂ２の上部へ作動油が送り込まれるとともに、油圧シリンダ６ｂ２下部からパイプ６ｂ３、および切替えバルブ６ｂ４を介して作動油が送り出され、プランジャ６ｂ１が下げられる。これによって、図１に示すように、スライド体６ａおよびロープ４が引き下げられるとともに、乗かご２の床面２ｂが下降し、着床階１１の床面１１ａとのレベルずれが修正される。このとき、乗かご２の質量、およびつり合いおもり３の質量を前記同様とし、乗かご２の積載量を０とした場合、乗かご２を下降させるために要する下向きの力は、つり合いおもり３の質量から乗かご２の質量を差し引いた値に２対１ローピングの比率が適用され、（４）式が成立する。   On the other hand, after the car 2 has landed on the landing floor 11, the passengers in the car 2 get off or the loaded luggage is carried out of the car 2, so that the rope 4 contracts. As shown in FIG. 6, when a level shift occurs between the floor surface 2b of the car 2 and the floor surface 11a of the landing floor 11, as shown in FIG. The hydraulic oil is sent to the upper part of the hydraulic cylinder 6b2 via the switching valve 6b4 and the pipe 6b3, and the hydraulic oil is sent from the lower part of the hydraulic cylinder 6b2 via the pipe 6b3 and the switching valve 6b4 to lower the plunger 6b1. Thereby, as shown in FIG. 1, the slide body 6 a and the rope 4 are pulled down, the floor surface 2 b of the car 2 is lowered, and the level deviation from the floor surface 11 a of the landing floor 11 is corrected. At this time, assuming that the weight of the car 2 and the weight of the counterweight 3 are the same as described above, and the loading amount of the car 2 is 0, the downward force required to lower the car 2 is that of the counterweight 3. The ratio of 2 to 1 roping is applied to the value obtained by subtracting the mass of the car 2 from the mass, and the equation (4) is established.

Figure 2012153487
この数式から明らかなように、乗かご２側の質量とつり合いおもり３側の質量の関係によっては、スライド体６ａを引き下げるためにも駆動力を要するために、２系統の油圧回路を有する複動型の油圧システム６ｂを用いている。
Figure 2012153487
As is apparent from this equation, depending on the relationship between the weight on the car 2 side and the weight on the counterweight 3 side, a driving force is required to pull down the slide body 6a. A type hydraulic system 6b is used.

本実施例によれば、より少ない駆動力で乗かごのレベルずれを修正することができ、これによって、装置の小型化、およびコストの低減を図ることができる。   According to the present embodiment, it is possible to correct the level difference of the car with a smaller driving force, thereby reducing the size of the apparatus and reducing the cost.

なお、本実施例では、スライド体６ａの片側のみに油圧システム６ｂを設けた例を示したが、エレベータの仕様に応じてスライド体の両側に油圧ジャッキを配置し、より大きな駆動力を得るようにしてもよい。また、本実施例では、スライド体６ａを上下方向に駆動するものとして油圧システム６ｂを用いたが、本発明はこれに限らず、例えば、ボールねじにより駆動されるスライド体を設け、ボールねじをモータ等で駆動される構成など、所定速度で円滑に上下させることのできるものであればよい。   In this embodiment, an example in which the hydraulic system 6b is provided only on one side of the slide body 6a has been shown. However, hydraulic jacks are arranged on both sides of the slide body according to the specifications of the elevator so as to obtain a larger driving force. It may be. In this embodiment, the hydraulic system 6b is used to drive the slide body 6a in the vertical direction. However, the present invention is not limited to this. For example, a slide body driven by a ball screw is provided, Any structure that can be smoothly moved up and down at a predetermined speed, such as a configuration driven by a motor or the like, may be used.

１ 昇降路
２ 乗かご
２ａ かご上プーリ
２ｂ かご床
３ つり合いおもり
３ａ おもり上プーリ
４ ロープ
４ａ かご側ロープエンド
４ｂ おもり側ロープエンド
５ 巻上機
５ａ シーブ
６ かご位置調整手段
６ａ スライド体
６ａ１ 貫通孔
６ｂ 油圧システム
６ｂ１ プランジャ
６ｂ２ 油圧シリンダ
６ｂ３ パイプ
６ｂ４ 切替えバルブ
６ｂ５ 油圧ポンプ
７ａ、７ｂ プーリ
８ａ、８ｂ ソケット
９ａ、９ｂ ばね
１０ 支柱体
１１ 着床階
１１ａ 床面 DESCRIPTION OF SYMBOLS 1 Hoistway 2 Passenger car 2a Car pulley 2b Car floor 3 Balance weight 3a Weight pulley 4 Rope 4a Car side rope end 4b Weight side rope end 5 Hoisting machine 5a Sheave 6 Car position adjustment means 6a Slide body 6a1 Through hole 6b Hydraulic system 6b1 Plunger 6b2 Hydraulic cylinder 6b3 Pipe 6b4 Switching valve 6b5 Hydraulic pump 7a, 7b Pulley 8a, 8b Socket 9a, 9b Spring 10 Strut body 11 Landing floor 11a Floor surface

Claims (1)

昇降路を昇降する乗かごおよびつり合いおもりと、これらの乗かごおよびつり合いおもりが吊持されたロープを駆動する巻上機と、前記乗かごの昇降軌道上方に配置され、スライド体に連結された前記ロープを引き上げて又は引き下げて、前記乗かごの床面と着床階の床面とのレベルずれを修正するかご位置調整手段とを備えたエレベータ装置において、
前記かご位置調整手段より上方に、前記ロープのおもり側が巻き掛けられるプーリを配置するとともに、前記スライド体に、前記ロープのかご側ロープエンド、および前記ロープのおもり側ロープエンドを互いに向き合うように連結し、前記ロープをループ状に配したことを特徴とするエレベータ装置。 A car and a counterweight that ascends and descends the hoistway, a hoist that drives a rope on which these car and counterweight are suspended, and a hoisting orbit of the car are disposed above and connected to a slide body In an elevator apparatus comprising a car position adjusting means that raises or lowers the rope to correct a level shift between the floor surface of the car and the floor surface of the landing floor,
A pulley around which the weight side of the rope is wound is disposed above the cage position adjusting means, and the rope-side rope end of the rope and the weight-side rope end of the rope are connected to the slide body so as to face each other. An elevator apparatus characterized in that the rope is arranged in a loop shape.
JP2011014195A 2011-01-26 2011-01-26 Elevator equipment Expired - Fee Related JP5468029B2 (en)

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CN103693535A (en) * 2013-12-17 2014-04-02 苏州久德机电科技有限公司 Elevator traction device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61130190A (en) * 1984-11-30 1986-06-18 株式会社日立製作所 Floor aligner for elevator
JP2000255920A (en) * 1999-03-03 2000-09-19 Oil Drive Kogyo Kk Method and device for correcting level of elevator car of elevator
JP2008137756A (en) * 2006-11-30 2008-06-19 Showa Yusoki Kk Elevator device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB624490A (en) * 1947-04-14 1949-06-09 Bennie Lifts Ltd Improvements in or relating to electrically operable lifts and the like
JPH0859106A (en) * 1994-08-18 1996-03-05 Mitsubishi Denki Bill Techno Service Kk Landing error correction device for elevator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61130190A (en) * 1984-11-30 1986-06-18 株式会社日立製作所 Floor aligner for elevator
JP2000255920A (en) * 1999-03-03 2000-09-19 Oil Drive Kogyo Kk Method and device for correcting level of elevator car of elevator
JP2008137756A (en) * 2006-11-30 2008-06-19 Showa Yusoki Kk Elevator device

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