JP6008791B2 - Vibration isolator structure and method for elevator hoisting machine, dynamic vibration absorber for elevator hoisting machine - Google Patents

Vibration isolator structure and method for elevator hoisting machine, dynamic vibration absorber for elevator hoisting machine Download PDF

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JP6008791B2
JP6008791B2 JP2013100099A JP2013100099A JP6008791B2 JP 6008791 B2 JP6008791 B2 JP 6008791B2 JP 2013100099 A JP2013100099 A JP 2013100099A JP 2013100099 A JP2013100099 A JP 2013100099A JP 6008791 B2 JP6008791 B2 JP 6008791B2
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hoisting machine
spring constant
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machine base
elevator
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健史 畑中
健史 畑中
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Mitsubishi Electric Corp
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Description

この発明は、エレベータ巻上機の防振に関する。   The present invention relates to vibration isolation of an elevator hoist.

従来、巻上機運転時に発生する振動の建屋に対する防振は巻上機台直下の防振ゴム、また、上記防振ゴムで防振が不足する場合は、機械台間とさらには機械台と建屋間に配置した防振ゴム(二重防振)によって防振を行なっている。   Conventionally, vibration prevention for the building of vibrations generated during the operation of the hoisting machine has been performed with the anti-vibration rubber directly under the hoisting machine base. Anti-vibration is provided by anti-vibration rubber (double anti-vibration) placed between the buildings.

特開２００７−２８４１５３号公報JP 2007-284153 A

しかしながら、上記のような巻上機台直下の防振ゴム等の場合、初期設計時に設計した構造から防振特性の改善や調整のために追加の防振構造を取り付ける場合に、例えば巻上機台や機械台全体を釣り上げて、防振ゴムの交換や追加を行う必要がある等、容易でなく、しかも防振ゴムも大きいため防振構造全体が大きくなっていた。   However, in the case of anti-vibration rubber directly under the hoisting machine base as described above, when an additional anti-vibration structure is installed for improving or adjusting the anti-vibration characteristics from the structure designed at the initial design, for example, the hoisting machine It is not easy, for example, it is necessary to change and add anti-vibration rubber by picking up the entire table or machine base, and the entire anti-vibration structure is large due to the large anti-vibration rubber.

この発明は、上記の課題を解決するためになされたものであり、より簡単に防振特性の変更が行えるエレベータ巻上機のための防振構造等を提供することを目的とする。   The present invention has been made to solve the above-described problems, and an object thereof is to provide a vibration-proof structure for an elevator hoisting machine in which vibration-proof characteristics can be changed more easily.

この発明は、巻上機を搭載した巻上機台を、建屋側に固定された機械台上に第１の弾性体を間に介在させて設けたエレベータにおいて、前記巻上機台に前記巻上機運転時に発生する振動を吸収する動吸振器を少なくとも１つ取り付け、前記動吸振器が、錘と前記錘から回転軸方向に沿って両側に延び回転位置により振動に対するバネ定数が変わるバネ定数可変梁部を含むバネ定数変更部と、前記巻上機台上で前記バネ定数変更部を両側の前記バネ定数可変梁部で回転可能に保持する保持部と、前記保持部と前記巻上機台の間に介在する第２の弾性体と、を含む、ことを特徴とするエレベータ巻上機のための防振構造等にある。 The present invention relates to an elevator in which a hoisting machine base on which a hoisting machine is mounted is provided on a machine base fixed to a building side with a first elastic body interposed therebetween, and the hoisting machine base includes the hoisting machine base. attach least one dynamic absorber for absorbing vibrations generated during manufacturing machine operation, the dynamic vibration reducer is, the spring constant is changed to vibrations by the rotational position extend on both sides along the rotational axis direction from the weight and weight spring A spring constant changing part including a constant variable beam part, a holding part for rotatably holding the spring constant changing part on both sides of the spring constant variable beam part on the hoisting machine base, the holding part and the hoisting part And an anti-vibration structure for an elevator hoisting machine including a second elastic body interposed between the machine bases .

この発明では、より簡単に防振特性の改善や調整が行える。   In the present invention, the vibration isolation characteristics can be improved and adjusted more easily.

この発明の一実施の形態によるエレベータ巻上機のための防振構造を設けたエレベータ巻上機を示す図である。It is a figure which shows the elevator hoisting machine provided with the vibration isolating structure for the elevator hoisting machine by one Embodiment of this invention. 図１の動吸振器の構成を示す図である。It is a figure which shows the structure of the dynamic vibration absorber of FIG. この発明による防振構造の効果を説明するための振動モデルの図である。It is a figure of the vibration model for demonstrating the effect of the vibration isolating structure by this invention.

以下、この発明によるエレベータ巻上機のための防振構造等を図面を用いて説明する。なお、各図において、同一もしくは相当部分は同一符号で示し、重複する説明は省略する。   Hereinafter, an anti-vibration structure for an elevator hoist according to the present invention will be described with reference to the drawings. In addition, in each figure, the same or an equivalent part is shown with the same code | symbol, and the overlapping description is abbreviate | omitted.

実施の形態１．
図１はこの発明の一実施の形態によるエレベータ巻上機のための防振構造を設けたエレベータの巻上機部分を示す図である。図１の(ａ)は正面図、(ｂ)は(ａ)の図面に向かって右側からの側面図である。巻上機１は巻上機台２上に搭載される。昇降路上部には、昇降路に梁のように延びる例えば平行な２本のＨ形鋼からなる、建屋側に固定された機械台１０が設けられている。巻上機台２は、機械台１０の２本のＨ形鋼に沿って、Ｈ形鋼との間に防振ゴム３を介在させて固定された２本の支持部材からなる。ただしこの発明はこの構造に限定されず、巻上機１を搭載した巻上機台２が第１の弾性体である防振ゴム３を間には挟んで機械台１０上に設けられているものであればよい。 Embodiment 1 FIG.
FIG. 1 is a view showing an elevator hoisting part provided with a vibration isolating structure for an elevator hoisting machine according to an embodiment of the present invention. 1A is a front view, and FIG. 1B is a side view from the right side of FIG. 1A. The hoisting machine 1 is mounted on the hoisting machine base 2. At the upper part of the hoistway, there is provided a machine base 10 fixed to the building side, which is made of, for example, two parallel H-sections extending like a beam in the hoistway. The hoisting machine base 2 is composed of two supporting members fixed along the two H-shaped steels of the machine base 10 with an anti-vibration rubber 3 interposed therebetween. However, the present invention is not limited to this structure, and the hoisting machine base 2 on which the hoisting machine 1 is mounted is provided on the machine base 10 with the anti-vibration rubber 3 as the first elastic body in between. Anything is acceptable.

そして巻上機１にはロープ９が架けられ、両端が巻上機台２の２本の支持部材の間から昇降路の下方に延び、一端にかご、他端には釣合錘(共に図示省略)がそれぞれ結合されている。そらせ車５はかごと釣合錘の間隔を確保する。以上は現状の標準的な防振構造の構成である。   The hoisting machine 1 is provided with a rope 9 and both ends extend from between the two support members of the hoisting machine base 2 to the lower side of the hoistway. Are omitted). The deflecting wheel 5 secures the distance between the car and the counterweight. The above is the current standard anti-vibration structure.

そしてこの発明では、図２に構造の詳細を示す動吸振器４０が、巻上機台２に、２本の支持部材に亘って延びる方向に設けられ、上記現状の標準的な防振構造の防振特性の改善や調整のための変更を行うようにしている。なお、図１の(ａ)では動吸振器４０の配置箇所の例を示すために、３つの動吸振器４０が示されているが、少なくとも１つの動吸振器４０を設ければよい。   And in this invention, the dynamic vibration absorber 40 which shows the detail of a structure in FIG. 2 is provided in the direction extended over two support members in the hoisting machine stand 2, and the above-mentioned current standard vibration-proof structure is provided. Changes are made to improve and adjust the anti-vibration characteristics. In FIG. 1A, three dynamic vibration absorbers 40 are shown in order to show an example of an arrangement location of the dynamic vibration absorbers 40. However, at least one dynamic vibration absorber 40 may be provided.

図２はこの発明による動吸振器の一例を示す図であり、(ａ)は図１の(ａ)と同じ方向である動吸振器の回転軸方向から見た図、(ｂ)はバネ定数可変梁部４４ａの回転時の状態を示すための回転軸方向から見た図、(ｃ)は(ａ)および(ｂ)の図面に向かって右側からのバネ定数変更部４４の側面図である。   FIG. 2 is a view showing an example of a dynamic vibration absorber according to the present invention. (A) is a view seen from the rotational axis direction of the dynamic vibration absorber, which is the same direction as (a) in FIG. 1, and (b) is a spring constant. The figure seen from the rotating shaft direction for showing the state at the time of rotation of the variable beam part 44a, (c) is a side view of the spring constant changing part 44 from the right side toward the drawings of (a) and (b). .

最初に図２の(ｃ)に示すようにバネ定数変更部４４は、回転軸Ｒと直交する断面が例えば図２の(ａ)(ｂ)に示すように長方形のバネ定数可変梁部４４ａの中央に円筒形の錘４１、両端に円筒形端部４４ｂが設けられた棒状のものである。このバネ定数変更部４４は図１の(ｂ)に示すように両端が保持部４２でそれぞれ保持されている。各保持部４２は、第２の弾性体である防振ゴム４２ｂと、バネ定数変更部４４の回転軸方向の両端の円筒形端部４４ｂを回転可能に受ける軸受け穴４２ａを有する。そして防振ゴム４２ｂを介して巻上機台２に固定される。両端を保持部４２で保持されたバネ定数変更部４４が回転軸回りに回転した時のバネ定数可変梁部４４ａの断面の変化は図２の(ｂ)に示すものとなる。図２の(ａ)の止めネジ４０ａを締め付ければ、バネ定数変更部４４は回転できずに保持部４２に対して固定される。   First, as shown in FIG. 2 (c), the spring constant changing portion 44 has a cross section orthogonal to the rotation axis R of the rectangular spring constant variable beam portion 44a as shown in FIGS. 2 (a) and 2 (b), for example. It is a rod-shaped body provided with a cylindrical weight 41 at the center and cylindrical end portions 44b at both ends. As shown in FIG. 1B, both ends of the spring constant changing portion 44 are held by holding portions 42, respectively. Each holding portion 42 has a vibration-proof rubber 42b that is a second elastic body and a bearing hole 42a that rotatably receives the cylindrical end portions 44b at both ends in the rotation axis direction of the spring constant changing portion 44. And it fixes to the hoisting machine stand 2 via the vibration isolating rubber 42b. The change in the cross section of the spring constant variable beam portion 44a when the spring constant changing portion 44 having both ends held by the holding portion 42 rotates about the rotation axis is as shown in FIG. When the set screw 40a of FIG. 2A is tightened, the spring constant changing portion 44 cannot be rotated and is fixed to the holding portion.

各保持部４２の下面に配置した防振ゴム４２ｂの厚さを変えることで動吸振器４０の振動に対する減衰率を容易に変化させる、すなわち振動に対する所望の減衰率を有する厚みとする、ことが可能な構造とし、また図２の(ｃ)に示すように錘４１、バネ定数可変梁部４４ａ、円筒形端部４４ｂからなるバネ定数変更部４４を回転させることで、長方形断面を回転し動吸振器４０の振動に対するバネ定数を容易に変化させることが可能となっている。   By changing the thickness of the anti-vibration rubber 42b disposed on the lower surface of each holding portion 42, the damping rate of the dynamic vibration absorber 40 can be easily changed, that is, a thickness having a desired damping rate against vibration. As shown in FIG. 2 (c), by rotating the spring constant changing portion 44 including the weight 41, the spring constant variable beam portion 44a, and the cylindrical end portion 44b as shown in FIG. The spring constant with respect to the vibration of the vibration absorber 40 can be easily changed.

図３にこの発明による防振構造と現状の標準的な防振構造との振動モデルを示す。図３の(ａ)はこの発明の防振構造のモデル、(ｂ)は標準的な防振構造のモデルを示す。この発明では、振動に係る要素が、防振構造の総質量Ｍ、防振ゴム３のバネ定数ｋｒ、減衰率ｃｒと、動吸振器４０の総質量ｍ、保持部４２に取付けた防振ゴム４２ｂ、バネ定数可変梁部４４ａの合成バネ定数ｋ、防振ゴム４２ｂの減衰率ｃ、によって構成されている。ｆ(ｔ)は巻上機１で発生される振動を示す。   FIG. 3 shows a vibration model of the vibration-proof structure according to the present invention and the current standard vibration-proof structure. FIG. 3A shows a model of the vibration-proof structure of the present invention, and FIG. 3B shows a standard model of the vibration-proof structure. In the present invention, the vibration-related elements are the total mass M of the vibration isolation structure, the spring constant kr and damping factor cr of the vibration isolation rubber 3, the total mass m of the dynamic vibration absorber 40, and the vibration isolation rubber attached to the holding portion 42. 42b, the composite spring constant k of the spring constant variable beam portion 44a, and the damping coefficient c of the vibration isolating rubber 42b. f (t) represents the vibration generated by the hoist 1.

合成バネ定数ｋ、防振ゴム４２ｂの減衰率ｃを最適な値にすることで巻上機台２に発生する振動振幅ピークを低減できる。防振ゴム３のバネ定数ｋｒ、減衰率ｃｒを変更させるのは、巻上機台２を釣り上げて、防振ゴム３を交換したり、新たな防振ゴムを追加する必要があり容易ではないため、防振ゴム４２ｂ、バネ定数可変梁部４４ａの合成バネ定数ｋ、防振ゴム４２ｂの減衰率ｃの調整を行うことで振動に対する最適な減衰率ｃ、合成バネ定数ｋに調整する。   The vibration amplitude peak generated in the hoisting machine base 2 can be reduced by optimizing the composite spring constant k and the damping rate c of the anti-vibration rubber 42b. It is not easy to change the spring constant kr and damping rate cr of the anti-vibration rubber 3 because it is necessary to pick up the hoisting machine base 2 and replace the anti-vibration rubber 3 or add a new anti-vibration rubber. Therefore, by adjusting the vibration-insulating rubber 42b, the combined spring constant k of the spring constant variable beam portion 44a, and the damping rate c of the vibration-proofing rubber 42b, the optimum damping rate c against vibration and the combined spring constant k are adjusted.

錘４１の重量に対する、巻上機１と巻上機台２とそらせ車５の総重量の質量比は例えば１／１００程度に小さくする。質量比を小さくすることで錘４１形状も小さくでき、さらなる省スペース化が可能となる。   The mass ratio of the total weight of the hoisting machine 1, the hoisting machine base 2, and the deflecting wheel 5 to the weight of the weight 41 is reduced to, for example, about 1/100. By reducing the mass ratio, the shape of the weight 41 can be reduced, and further space saving can be achieved.

巻上機台２への動吸振器４０の配置箇所は、図１に例示した動吸振器４０の設置位置Ａ〜Ｃのうちロープ９等の干渉のない位置での設置をおこなう。また、動吸振器４０を複数設けてもよい。   The placement location of the dynamic vibration absorber 40 on the hoisting machine base 2 is installed at a position without interference such as the rope 9 among the installation positions A to C of the dynamic vibration absorber 40 illustrated in FIG. A plurality of dynamic vibration absorbers 40 may be provided.

このような動吸振器を利用した制振構造は、既設された巻上機の防振構造にも、エレベータを停止させ大規模な工事が必要ないため、容易に追加可能である。   Such a vibration damping structure using the dynamic vibration absorber can be easily added to the existing anti-vibration structure of the hoist because the elevator is stopped and no large-scale construction is required.

また、巻上機台２に動吸振器４０を配置することで省スペース、既設防振構造に容易に後付けが可能な振動抑制装置とした。   In addition, by arranging the dynamic vibration absorber 40 on the hoisting machine base 2, a vibration suppressing device that can be easily retrofitted to a space-saving and existing vibration-proof structure is provided.

また動吸振器４０において、保持部４２に対してバネ定数変更部４４を適切な回転位置に回転させた後は、止めネジ４０ａによって固定させる。   Further, in the dynamic vibration absorber 40, after the spring constant changing portion 44 is rotated to an appropriate rotation position with respect to the holding portion 42, it is fixed by a set screw 40a.

また、第１の弾性体である防振ゴム３、第２の弾性体である防振ゴム４２ｂは、ゴム以外の弾性体であってもよく、例えば減衰機能を持たせたコイルバネ等であってもよい。   The anti-vibration rubber 3 as the first elastic body and the anti-vibration rubber 42b as the second elastic body may be elastic bodies other than rubber, such as a coil spring having a damping function. Also good.

またバネ定数可変梁部４４ａの形状は、回転軸と直交する断面が長方形であるものに限らず、回転軸回りで径が異なる形状または回転軸と直交する断面、を有するものであればよい。   The shape of the spring constant variable beam portion 44a is not limited to a rectangular cross section orthogonal to the rotation axis, but may be any shape having a different diameter around the rotation axis or a cross section orthogonal to the rotation axis.

１ 巻上機、２ 巻上機台、３ 防振ゴム、５ そらせ車、９ ロープ、１０ 機械台、４０ 動吸振器、４０ａ 止めネジ、４１ 錘、４２ 保持部、４２ａ 軸受け穴、４２ｂ 防振ゴム、４４ バネ定数変更部、４４ａ バネ定数可変梁部、４４ｂ 円筒形端部。   1 hoisting machine, 2 hoisting machine base, 3 anti-vibration rubber, 5 baffle, 9 rope, 10 machine base, 40 dynamic vibration absorber, 40a set screw, 41 weight, 42 holding part, 42a bearing hole, 42b anti-vibration Rubber, 44 Spring constant changing part, 44a Spring constant variable beam part, 44b Cylindrical end part.

Claims (5)

巻上機を搭載した巻上機台を、建屋側に固定された機械台上に第１の弾性体を間に介在させて設けたエレベータにおいて、前記巻上機台に前記巻上機運転時に発生する振動を吸収する動吸振器を少なくとも１つ取り付け、
前記動吸振器が、
錘と前記錘から回転軸方向に沿って両側に延び回転位置により振動に対するバネ定数が変わるバネ定数可変梁部を含むバネ定数変更部と、
前記巻上機台上で前記バネ定数変更部を両側の前記バネ定数可変梁部で回転可能に保持する保持部と、
前記保持部と前記巻上機台の間に介在する第２の弾性体と、
を含む、
ことを特徴とするエレベータ巻上機のための防振構造。 In an elevator provided with a hoisting machine base equipped with a hoisting machine on a machine base fixed to the building side with a first elastic body interposed therebetween, the hoisting machine base is operated during the hoisting machine operation. attach least one dynamic absorber for absorbing vibrations generated,
The dynamic vibration absorber is
A spring constant changing portion including a weight and a spring constant variable beam portion extending from the weight to both sides along the rotation axis direction and changing a spring constant with respect to vibration depending on a rotation position;
A holding part for holding the spring constant changing part on the hoisting machine table rotatably by the spring constant variable beam parts on both sides;
A second elastic body interposed between the holding portion and the hoisting machine base;
including,
An anti-vibration structure for an elevator hoisting machine. 前記バネ定数可変梁部が、回転軸回りで径が異なる形状を有することを特徴とする請求項１に記載のエレベータ巻上機のための防振構造。 The vibration isolating structure for an elevator hoisting machine according to claim 1 , wherein the spring constant variable beam portion has a shape with a different diameter around a rotation axis. 前記第２の弾性体が、振動に対する所望の減衰率を有する厚みを有することを特徴とする請求項１または２に記載のエレベータ巻上機のための防振構造。 The vibration isolating structure for an elevator hoisting machine according to claim 1 or 2 , wherein the second elastic body has a thickness having a desired damping ratio against vibration. 巻上機を搭載した巻上機台を、建屋側に固定された機械台上に第１の弾性体を間に介在させて設けたエレベータの前記巻上機台に、前記巻上機運転時に発生する振動に対するバネ定数および減衰率を変える動吸振器を少なくとも１つ取り付け、
前記動吸振器として、錘と前記錘から回転軸方向に沿って両側に延び回転位置により振動に対するバネ定数が変わるバネ定数可変梁部を含むバネ定数変更部を設け、
前記巻上機台上で前記バネ定数変更部を両側の前記バネ定数可変梁部で保持部により回転可能に保持し、
前記保持部と前記巻上機台の間に第２の弾性体を介在させる、
ことを特徴とするエレベータ巻上機のための防振方法。 When the hoisting machine is operated, the hoisting machine base of the elevator provided with the first elastic body interposed between the hoisting machine base mounted with the hoisting machine on the machine base fixed to the building side. At least one dynamic vibration absorber that changes a spring constant and a damping rate with respect to the generated vibration is attached,
As the dynamic vibration absorber, a weight and a spring constant changing portion including a spring constant variable beam portion that extends from the weight to both sides along the rotation axis direction and changes a spring constant with respect to vibration depending on a rotation position;
On the hoisting machine stand, the spring constant changing portion is rotatably held by holding portions at the spring constant variable beam portions on both sides,
A second elastic body is interposed between the holding unit and the hoisting machine base;
An anti-vibration method for an elevator hoisting machine. 錘と前記錘から回転軸方向に沿って両側に延び回転位置により振動に対するバネ定数が変わるバネ定数可変梁部を含むバネ定数変更部と、
エレベータの巻上機台上で前記バネ定数変更部を両側の前記バネ定数可変梁部で回転可能に保持する保持部と、
前記保持部と前記巻上機台の間に介在する第２の弾性体と、
を含むことを特徴とするエレベータ巻上機のための動吸振器。 A spring constant changing portion including a weight and a spring constant variable beam portion extending from the weight to both sides along the rotation axis direction and changing a spring constant with respect to vibration depending on a rotation position;
A holding unit for rotatably holding the spring constant changing unit on both sides of the spring constant variable beam unit on the elevator hoisting machine;
A second elastic body interposed between the holding portion and the hoisting machine base;
A dynamic vibration absorber for an elevator hoisting machine characterized by comprising:
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