JP4024524B2

JP4024524B2 - Elevator equipment

Info

Publication number: JP4024524B2
Application number: JP2001355856A
Authority: JP
Inventors: 史郎池田
Original assignee: Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Corp
Priority date: 2001-11-21
Filing date: 2001-11-21
Publication date: 2007-12-19
Anticipated expiration: 2021-11-21
Also published as: JP2003155176A

Description

【０００１】
【発明の属する技術分野】
この発明は、主索により互いに連結されたかご及びつり合いおもりを有するエレベーター装置の安全装置に関するものである。
【０００２】
【従来の技術】
図５は、例えば公開特許公報２００１−１５１４３２号に掲載された従来のエレベーター装置を示す昇降路側面図である。以下、上記公開公報の記載内容に基づき、従来のエレベーター装置について説明する。
図５において、１はエレベーターの昇降路、２はかご、３はつり合いおもり、４は昇降路１に設けられた最上階の乗り場の床、５は昇降路１に設けられた最下階の乗り場の床、６は吊り車、７は、かご２とつり合いおもり３を吊り車６を介して吊っているロープ（主索）、８はかご上に乗った保守員、９は昇降路１の底部に設けられてつり合いおもり３に対向して配置されたつり合いおもり用緩衝器、１０は、昇降路１の底部に設けられてかご２に対向して配置されたかご用緩衝器、１１は、つり合いおもり下降阻止装置で保守運転時につり合いおもり用緩衝器９の頂部に重ねて複数のボルト１２等で取り付けられる。なお、つり合いおもり用緩衝器９はつり合いおもり３の荷重を受け全圧縮している状態を示す。
【０００３】
１３は、かご下降阻止装置で、保守運転時にかご用緩衝器１０の頂部に重ねて複数のボルト１２等で取り付けられる。なお、かご用緩衝器１０はかご２の荷重を受けず、かご下降阻止装置１３の荷重しか受けてなく伸びている状態を示す。
【０００４】
つり合いおもり下降阻止装置１１は、つり合いおもり３の下降をつり合いおもり緩衝器９よりも上方位置、すなわち、通常の下降位置よりも上方の所定位置で阻止する。なお、このつり合いおもり３の下降阻止により、かご２の上昇が通常の上昇位置よりも下方の所定位置で制約される。
【０００５】
保守時に保守員８がかご上に乗って誤ってかご２を上昇させつづけると、破線で示すように保守員８が天井に頭をぶつける可能性がある。これを防止するために、保守時にかご２の天井に乗って保守する場合は、まずつり合いおもり下降阻止装置１１をつり合いおもり用緩衝器９の頂部に取り付け、つり合いおもり３がつり合いおもり緩衝器９より先につり合いおもり下降阻止装置１１に当たるようにして、かご２はそれ以上上方へは物理的に動けないようにする。
【０００６】
このときのつり合いおもり下降阻止装置１１の寸法は、保守員８がかご上に乗っていても頭を打たないだけの長さに設定してあるので、保守員８が昇降路１の天井に頭をぶっつけることはなく安全である。また、保守員１４がピット内にいても、かご下降阻止装置１３は、かご２の下降をかご緩衝器１０よりも上方位置、すなわち、通常の下降位置よりも上方の所定位置で阻止するので保守員１４がかご２に衝突することがなく安全である。
【０００７】
また、図６は、上記で説明した従来のエレベーター装置におけるつり合いおもり用緩衝器９とつり合いおもり下降阻止装置１１からなる、つり合いおもり下降防止のための安全装置の詳細図である。
図６において、（ａ）はこの安全装置の正面図、（ｂ）は側面図である。
つり合いおもり下降阻止装置は、つり合いおもりカウンター下面当たり板１１ａ、嵩上げパイプ１１ｂ、つり合いおもり用緩衝器９に取付ける取付板１１ｃから構成される。１２は、位置決め、外れ止め用ボルトである。また、９ａは鍔状の緩衝器頂部である。
【０００８】
また、図７は上記のつり合いおもり下降阻止装置１１の要部構成を示す斜視図であり、取付板１１ｃは鍔状の緩衝器頂部９ａと嵌め合うようにＣ字状に形成されている。１１ｄは、位置決め、外れ止め用ボルト１２が装着される挿入穴である。
【０００９】
点検およびエレベーター据付時に、ピット内、かご上での作業に対し、下降阻止装置１１の断面Ｃ字形状の嵌合部を緩衝器頂部９ａにあわせ、水平にスライドさせ取付け、位置決め、外れ止め用ボルト１２を挿入穴１１ｄに装着する。装着されたボルト１２が緩衝器頂部９ａの外側に係止し、つり合いおもり阻止装置１１を緩衝器９に取り付けている。
なお、上記従来のエレベーター装置では、かご用緩衝装置１０及びかご阻止装置１３からなるかご下降防止のための安全装置についても、上記つり合いおもり用の安全装置と同様の構成となっている。
【００１０】
【発明が解決しようとする課題】
従来のエレベーター装置における、つり合いおもり又はかご下降防止のための安全装置は上記のように、下降阻止装置１１の断面Ｃ字形状の嵌合部を緩衝器頂部９ａにあわせ、水平にスライドさせて取付けるように構成されていたので、緩衝器が鍔部を有さない単純な構造のバネ緩衝器である場合は適用できないという問題があった。
【００１１】
本発明は、上記のような問題を解決するためになされたものであり、かご又はつり合いおもり用緩衝器として、バネ緩衝器が用いられている場合でも、適用が可能な安全装置を備えたエレベーター装置を提供することを目的とするものである。
【００１２】
【課題を解決するための手段】
この発明にかかるエレベーター装置は、主索により相互に連結されて昇降路を互いに反対方向へ昇降するかご及びつり合いおもりと、この昇降路の底部に設けられて、つり合いおもりに対向して配置された通常運転時でのつり合いおもり用バネ緩衝器と、保守運転時につり合いおもり用バネ緩衝器に取付けられて、つり合いおもりの下降が所定の位置を越えて下降しないように阻止するつり合いおもり下降阻止装置とを備え、上記つり合いおもり下降阻止装置は、つり合いおもり用バネ緩衝器の頂部に上部から被せるようにして取付けられるようにしたものである。
【００１３】
また、上記のつり合いおもり下降阻止装置は、開口部と、この開口部に嵌挿される棒状止め具とを備え、この棒状止め具がつり合いおもり下降阻止装置の開口部に外側から嵌挿されるとともに、つり合いおもり用バネ緩衝器のつるまき状バネの線径間に係止されることにより、上記つり合いおもり用バネ緩衝器に取付けられるようにしたものである。
【００１４】
また、上記のつり合いおもり下降阻止装置は、筒状の嵩上げパイプと、それぞれが開口部を有し、嵩上げパイプの下端部に取り付けられる複数の緩衝器取付け板とを備え、この複数の緩衝器取付け板は、つり合いおもり用バネ緩衝器を上部から被い、緩衝器取付け板の開口部に外側から嵌挿されて、つり合いおもり用バネ緩衝器のつるまき状バネの線径間に係止される棒状止め具により、上記のつり合いおもり用バネ緩衝器に取付けられるようにしたものである。
【００１５】
さらに、つり合いおもり下降阻止装置は、つり合いおもり用バネ緩衝器を上部から被い、つり合いおもり用バネ緩衝器に対して回転されることにより、つり合いおもり用バネ緩衝器に取付けられるようにしたものである。
【００１６】
この発明にかかるエレベーター装置は、主索により相互に連結されて昇降路を互いに反対方向へ昇降するかご及びつり合いおもりと、この昇降路の底部に設けられて、かごに対向して配置された通常運転時でのかご用バネ緩衝器と、保守運転時にかご用バネ緩衝器に取付けられて、かごの下降が所定の位置を越えて下降しないように阻止するかご下降阻止装置とを備え、上記かご下降阻止装置は、かご用バネ緩衝器の頂部に上部から被せるようにして取付けられるようにしたものである。
【００１７】
また、上記のかご下降阻止装置は、開口部と、この開口部に嵌挿される棒状止め具とを備え、この棒状止め具がかご下降阻止装置の開口部に外側から嵌挿されるとともに、かご用バネ緩衝器のつるまき状バネの線径間に係止されることにより、上記かご用バネ緩衝器に取付けられるようにしたものである。
【００１８】
また、上記のかご下降阻止装置は、筒状の嵩上げパイプと、それぞれが開口部を有し、嵩上げパイプの下端部に取り付けられる複数の緩衝器取付け板とを備え、この複数の緩衝器取付け板は、かご用バネ緩衝器を上部から被い、緩衝器取付け板の開口部に外側から嵌挿されて、かご用バネ緩衝器のつるまき状バネの線径間に係止される棒状止め具により、上記のかご用バネ緩衝器に取付けられるようにしたものである。
【００１９】
さらに、かご下降阻止装置は、かご用バネ緩衝器を上部から被い、かご用バネ緩衝器に対して回転されることにより、かご用バネ緩衝器に取付けられるようにしたものである。
【００２０】
【発明の実施の形態】
以下、この発明にかかるエレベーター装置の実施の形態を図について説明する。
実施の形態１
図１はこの発明の実施の形態１であるエレベーター装置に用いられる、つり合いおもり又はかご下降防止安全装置の構成を示す側面図である。なお、このエレベーター装置における、当該つり合いおもり又はかご下降安全装置を除く他の構成は、従来の技術として図５において説明した構成と同様であるので、説明を省略する。また、図１に示す安全装置の構成は、つり合いおもり用安全装置としても、またかご用安全装置としても用いることができるが、本実施の形態１においては、かご用安全装置について用いた場合について説明する。
【００２１】
図１において、１５はつり合いおもり用バネ緩衝器であり、つり合いおもりに対向して昇降路の低部に設けられるものである。この、つり合いおもり用バネ緩衝器１５は、エレベーターの通常運転時において、つり合いおもりの所定範囲を超えての下降を阻止するための機能を果たすものである。
一方、１６はつり合いおもり下降阻止装置で、エレベーターの保守運転時に上記つり合いおもり用バネ緩衝器１５に取付けられて、つり合いおもりが保守員の安全確保のために許容される範囲を超えて下降することを防止する役割を果たすものである。
【００２２】
このつり合いおもり下降阻止装置１６は、嵩上げパイプ１６ｂと、この嵩上げパイプ１６ｂの上端面に位置してつり合いおもりに当接するカウンター下面当たり板１６ａと、上記嵩上げパイプの下端に位置してつり合いおもり用バネ緩衝器１５を上部から被うようにしてつり合いおもり下降阻止装置１６を固定する取付け板１６ｃからなる。また、この取付け板１６ｃは、それぞれ開口部１６ｄを有している。図２はそのようなつり合いおもり下降阻止装置１６を示す斜視図である。
【００２３】
図１において、１７は例えばボルト等の棒状止め具であり、当該取付け板１６ｃの開口部１６ｄに外側から嵌挿されるとともに、つり合いおもり用バネ緩衝器１５のつるまき状バネの線径間に挿入されて、取付け板１６ｃをつり合いおもり用バネ緩衝器１５に固定する役割を果たす。図３はそのようにして棒状止め具１７により、下降阻止装置１６がバネ緩衝器１５に固定された状態を示す、図１の矢視Ａにおける断面図である。
【００２４】
次に、エレベーター装置の保守用の動作を行うに際し、このつり合いおもり下降阻止装置１６を、つり合いおもり用バネ緩衝器１５に固定するための動作の一例について説明する。
まず、つり合いおもり下降阻止装置１６の取付け板１６ｃを、つり合いおもり用バネ緩衝器１５の上部から被うように配置する。次に、棒状止め具１７をそれぞれの取付け板１６ｃの開口部１６ｄに外側から挿入して取付け板１６ｃを貫通するとともに、つり合いおもり用バネ緩衝器１５のバネの線径間（すなわちつるまきバネの隙間）に差し込むことにより、下降阻止装置１６をバネ緩衝器１５に固定する。
【００２５】
以上の動作により、下降阻止装置１６はバネ緩衝器１５に対して、位置決めがなされ、外れないように固定される。
しかし、下降阻止装置１６をバネ緩衝器１５にさらに強固に固定する場合は、上記の動作によって、下降装置１６をバネ緩衝器１５に固定した後、さらに下降阻止装置１６をバネ緩衝器１５に対して下方に進行するように回転させる。このことにより、棒状止め具１７は、より深い位置でバネ緩衝器１５のバネに食い込むことになり、下降阻止装置１６をバネ緩衝器１５に、がたつき等がなくなるよう強固に固定できる。
【００２６】
なお、棒状止め具１７をバネ緩衝器１５のバネの線径間に挿入する際には、バネ緩衝器１５の緩衝動作時においてもバネのストロークを妨げないように、適当な位置において棒状止め具１７の挿入を規制し、バネ緩衝器の緩衝性能に支障をきたさないように調整しつつ行うこともできる。図４はそのようにして下降阻止装置１６をバネ緩衝器１５に取付けた場合の状態を示す、本発明によるつり合いおもり下降防止安全装置の一部断面図である。
【００２７】
また、上記実施の形態ではつり合いおもり下降阻止装置１６に複数の取付け板１６ｃを設けてバネ緩衝器１５に取付けるようにしたが、下降阻止装置１６の下部の径を拡張するとともに開口部を設けてバネ緩衝器１５の上部を被い、この開口部に棒状止め具１７を嵌挿することによりバネ緩衝器１５に取付けるようにしてもよい。なお、この下降阻止装置１６の下部の断面形状は円形であっても四角形であってもよい。
【００２８】
以上説明したように、この発明の実施の形態１のエレベーター装置は、つり合いおもりに対する下降防止安全装置を上記のように構成したので、つり合いおもり用緩衝器としてバネ緩衝器を用いた場合でも、つり合いおもり下降阻止装置を容易に取付けることが可能となる。
【００２９】
実施の形態２
上記実施の形態１では、つり合いおもり用バネ緩衝器１５につり合いおもり下降阻止装置１６を取付けて、エレベーター装置のつり合いおもり用の下降防止安全装置として用いる構成について説明した。しかし、上記のバネ緩衝器１５と下降阻止装置１６との組み合わせによる安全装置の構成は、エレベーター装置のかご用の下降防止安全装置として用いることも可能である。
【００３０】
すなわち、通常運転時に、かごの下降を所定の範囲内に制限するためのかご用緩衝器として、上記で説明したバネ緩衝器１５と同様の構成のものを用いる。さらに、エレベーターの保守運転時に上記かご用バネ緩衝器に取付けられて、かごが保守員の安全確保のために許容される範囲を超えて下降することを防止するかご下降阻止装置として、上記つり合いおもり下降阻止装置１６と同様の構成のものを用いる。そのような構成とすることにより、かご用緩衝器としてバネ緩衝器を用いた場合でも、かご下降阻止装置をかご用バネ緩衝器に容易に取付けることができる。
【００３１】
実施の形態３
上記実施の形態１及び実施の形態２では、バネ緩衝器１５に下降阻止装置１６を取付けて、エレベーター装置のつり合いおもり用の下降防止安全装置又はかご用の下降防止安全装置のいずれかについて用いる構成について説明した。しかし、かかるバネ緩衝器１５に下降阻止装置１６を取付ける構成は、エレベーター装置のつり合いおもり用の下降防止安全装置及びかご用の下降防止安全装置の双方に同時に使用できる。そのような構成とすることにより、つり合いおもり用緩衝器並びにかご用緩衝器の双方にバネ緩衝器を用いた場合でも、それぞれに対応する下降阻止装置を容易に取付けることが可能になる。
【００３２】
【発明の効果】
この発明のエレベーター装置によれば、つり合いおもり（かご）下降阻止装置は、つり合いおもり（かご）用バネ緩衝器の頂部に上部から被せるようにして取付けられるようにしたので、つり合いおもり（かご）用緩衝器としてバネ緩衝器を用いた場合でも、つり合いおもり（かご）下降阻止装置を容易に取付けることが可能となる効果がある。
【００３３】
また、つり合いおもり（かご）下降阻止装置は、開口部と、この開口部に嵌挿される棒状止め具を備え、この棒状止め具がつり合いおもり（かご）下降阻止装置の開口部に外側から嵌挿されるとともに、つり合いおもり（かご）用バネ緩衝器のつるまき状バネの線径間に係止されることにより、上記つり合いおもり（かご）用バネ緩衝器に取付けられるようにしたので、上記取付けがより確実に行える効果がある。
【００３４】
さらに、つり合いおもり（かご）下降阻止装置は、つり合いおもり（かご）用バネ緩衝器を上部から被い、つり合いおもり（かご）用バネ緩衝器に対して回転させて、つり合いおもり（かご）用バネ緩衝器に取付けられるようにしたので、より強固な取付けが可能になる効果がある。
【図面の簡単な説明】
【図１】この発明の実施の形態１のつり合いおもり下降防止安全装置を示す側面図である。
【図２】この発明の実施の形態１のつり合いおもり下降阻止装置を示す斜視図である。
【図３】図１における矢視を示す断面図である。
【図４】この発明の実施の形態１のつり合いおもり下降防止安全装置を示す一部断面図である。
【図５】従来のエレベーター装置の構成を示す昇降路側面図である。
【図６】従来のエレベーター装置の安全装置を示す正面図及び側面図である
【図７】従来のエレベーター装置のつり合いおもり下降阻止装置を示す斜視図である。
【符号の説明】
１エレベーターの昇降路
２かご
３つり合いおもり
６吊り車
７主索
１５つり合いおもり用緩衝器
１６つり合いおもり下降阻止装置
１６ｂ嵩上げパイプ
１６ｃ取付け板
１６ｄ開口部
１７棒状止め具[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a safety device for an elevator apparatus having a car and a counterweight connected to each other by a main rope.
[0002]
[Prior art]
FIG. 5 is a side view of a hoistway showing a conventional elevator apparatus described in, for example, published patent publication 2001-151432. Hereinafter, a conventional elevator apparatus will be described based on the contents described in the above publication.
In FIG. 5, 1 is an elevator hoistway, 2 is a car, 3 is a counterweight, 4 is a floor of the uppermost floor provided in the hoistway 1, and 5 is a lowermost hall provided in the hoistway 1. , 6 is a suspension car, 7 is a rope (main rope) that suspends the car 2 and the weight 3 through the suspension car 6, 8 is a maintenance person riding on the car, 9 is the bottom of the hoistway 1 The counterweight buffer 10 provided at the bottom of the hoistway 1 is disposed opposite to the counterweight 3 and 10 is the counterbalanced car disposed at the bottom of the hoistway 1 and opposite the car 2. The weight descent prevention device is attached with a plurality of bolts 12 or the like so as to overlap the top of the counterweight buffer 9 during maintenance operation. It should be noted that the counterweight buffer 9 is in a fully compressed state under the load of the counterweight 3.
[0003]
Reference numeral 13 denotes a car lowering prevention device, which is attached to the top of the car shock absorber 10 with a plurality of bolts 12 or the like during maintenance operation. Note that the car shock absorber 10 does not receive the load of the car 2 but only receives the load of the car lowering prevention device 13 and is in an extended state.
[0004]
The counterweight lowering prevention device 11 prevents the counterweight 3 from descending at a position above the counterweight buffer 9, that is, at a predetermined position above the normal lowering position. In addition, by the prevention of the lowering of the counterweight 3, the raising of the car 2 is restricted at a predetermined position below the normal raising position.
[0005]
If the maintenance person 8 gets on the car and keeps raising the car 2 by mistake during maintenance, the maintenance person 8 may hit his head against the ceiling as indicated by a broken line. In order to prevent this, when maintenance is performed on the ceiling of the car 2 during maintenance, the counterweight lowering prevention device 11 is first attached to the top of the counterweight buffer 9, and the counterweight 3 is more than the counterweight buffer 9. The car 2 is prevented from physically moving further upwards by striking the counterweight lowering prevention device 11 first.
[0006]
The dimensions of the counterweight descent prevention device 11 at this time are set to a length that does not hit the head even if the maintenance person 8 is on the car, so that the maintenance person 8 is placed on the ceiling of the hoistway 1. It is safe without hitting your head. Even if the maintenance person 14 is in the pit, the car lowering prevention device 13 prevents the car 2 from descending at a position above the car shock absorber 10, that is, at a predetermined position above the normal lowering position. The member 14 does not collide with the car 2 and is safe.
[0007]
FIG. 6 is a detailed view of a safety device for preventing a counterweight descending comprising the counterweight damper 9 and the counterweight descending prevention device 11 in the conventional elevator apparatus described above.
In FIG. 6, (a) is a front view of the safety device, and (b) is a side view.
The counterweight descent prevention device is composed of a counterweight counter lower surface contact plate 11a, a raised pipe 11b, and a mounting plate 11c attached to the counterweight buffer 9. Reference numeral 12 denotes a positioning and detachment prevention bolt. Reference numeral 9a denotes a bowl-shaped shock absorber top.
[0008]
FIG. 7 is a perspective view showing the configuration of the main part of the counterweight descent prevention device 11 described above, and the mounting plate 11c is formed in a C-shape so as to be fitted to the bowl-shaped shock absorber top 9a. Reference numeral 11d denotes an insertion hole in which the positioning and detachment prevention bolt 12 is mounted.
[0009]
At the time of inspection and elevator installation, for work in the pit or on the car, align the fitting part with the C-shaped cross section of the descent prevention device 11 with the shock absorber top 9a, slide it horizontally, position it, and secure it 12 is installed in the insertion hole 11d. The mounted bolt 12 is locked to the outside of the shock absorber top 9 a, and the counterweight blocking device 11 is attached to the shock absorber 9.
In the conventional elevator apparatus, the safety device for preventing the lowering of the car including the car shock absorber 10 and the car blocking device 13 has the same configuration as that of the counterweight safety device.
[0010]
[Problems to be solved by the invention]
As described above, the safety device for preventing the counterweight or the car from lowering in the conventional elevator apparatus is attached by sliding the C-shaped fitting portion of the descent prevention device 11 to the shock absorber top portion 9a and horizontally sliding it. Therefore, there is a problem in that it cannot be applied when the shock absorber is a spring shock absorber having a simple structure having no flange.
[0011]
The present invention has been made to solve the above-described problems, and an elevator equipped with a safety device that can be applied even when a spring shock absorber is used as a car or a balance weight shock absorber. The object is to provide an apparatus.
[0012]
[Means for Solving the Problems]
The elevator apparatus according to the present invention is connected to each other by main ropes and lifts up and down the hoistway in opposite directions to each other, and is provided at the bottom of the hoistway and is arranged to face the counterweight. A counterweight lowering prevention device that is attached to a counterweight spring shock absorber during normal operation and a counterweight spring shock absorber that is attached to a counterweight spring shock absorber during maintenance operation and prevents the counterweight from descending beyond a predetermined position. The counterweight descent prevention device is attached to the top of the counterweight spring shock absorber so as to be covered from above.
[0013]
The counterweight lowering prevention device includes an opening and a rod-like stopper fitted into the opening, and the rod-like stopper is fitted into the opening of the counterweight lowering prevention device from the outside. By being locked between the wire diameters of the helical springs of the counterweight spring shock absorber, the counterweight spring shock absorber can be attached to the counterweight spring shock absorber.
[0014]
The counterweight lowering prevention device includes a cylindrical raised pipe and a plurality of shock absorber mounting plates each having an opening and attached to a lower end portion of the raised pipe. The plate covers the counterweight spring shock absorber from the top, is inserted from the outside into the opening of the shock absorber mounting plate, and is locked between the diameters of the helical springs of the counterweight spring shock absorber. A rod-like stopper is attached to the counterweight spring shock absorber.
[0015]
Furthermore, the counterweight descent prevention device is designed to be attached to the counterweight spring shock absorber by covering the counterweight spring shock absorber from above and being rotated with respect to the counterweight spring shock absorber. is there.
[0016]
The elevator apparatus according to the present invention includes a car and a counterweight that are connected to each other by main ropes and move up and down the hoistway in opposite directions, and are usually provided at the bottom of the hoistway and arranged facing the car. A car spring shock absorber during operation, and a car descent prevention device which is attached to the car spring shock absorber during maintenance operation and prevents the car from falling below a predetermined position. The descending prevention device is attached to the top of the car spring shock absorber so as to be covered from above.
[0017]
The car lowering prevention device includes an opening and a bar-like stopper fitted into the opening, and the bar-like stopper is fitted into the opening of the car lowering prevention device from the outside. The spring shock absorber can be attached to the car spring shock absorber by being locked between the wire diameters of the helical springs.
[0018]
In addition, the car lowering prevention device includes a cylindrical raised pipe, and a plurality of shock absorber mounting plates each having an opening and attached to a lower end portion of the raised pipe. Is a rod-like stopper that covers the spring shock absorber for the car from above, is fitted into the opening of the shock absorber mounting plate from the outside, and is locked between the wire diameters of the helical springs of the car spring shock absorber. Thus, it can be attached to the above-described cage spring shock absorber.
[0019]
Further, the car lowering prevention device covers the car spring shock absorber from above and is attached to the car spring shock absorber by rotating with respect to the car spring shock absorber.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of an elevator apparatus according to the present invention will be described below with reference to the drawings.
Embodiment 1
FIG. 1 is a side view showing a configuration of a counterweight or car lowering prevention safety device used in the elevator apparatus according to Embodiment 1 of the present invention. In addition, since the structure of this elevator device other than the counterweight or car lowering safety device is the same as the structure described in FIG. Moreover, although the structure of the safety device shown in FIG. 1 can be used as both a counterweight safety device and a car safety device, in the first embodiment, the safety device for a car is used. explain.
[0021]
In FIG. 1, reference numeral 15 denotes a counterweight spring shock absorber, which is provided at the lower portion of the hoistway so as to face the counterweight. This counterweight spring shock absorber 15 functions to prevent the counterweight from descending beyond a predetermined range during normal operation of the elevator.
On the other hand, 16 is a counterweight lowering prevention device, which is attached to the counterweight spring shock absorber 15 during the maintenance operation of the elevator so that the counterweight descends beyond an allowable range for ensuring the safety of maintenance personnel. It plays a role to prevent.
[0022]
The counterweight descent prevention device 16 includes a raised pipe 16b, a counter lower surface abutting plate 16a positioned on the upper end surface of the raised pipe 16b and abutting the counterweight, and a counterweight spring located at the lower end of the raised pipe. The mounting plate 16c fixes the counterweight descent prevention device 16 so as to cover the shock absorber 15 from above. Each of the mounting plates 16c has an opening 16d. FIG. 2 is a perspective view showing such a counterweight descent prevention device 16.
[0023]
In FIG. 1, reference numeral 17 denotes a rod-like stopper such as a bolt, which is inserted from the outside into the opening 16d of the mounting plate 16c and inserted between the wire diameters of the helical spring of the counterweight spring shock absorber 15. Thus, the mounting plate 16c is fixed to the counterweight spring shock absorber 15. FIG. 3 is a cross-sectional view taken along arrow A in FIG. 1, showing a state in which the lowering prevention device 16 is fixed to the spring shock absorber 15 by the rod-like stopper 17.
[0024]
Next, an example of an operation for fixing the counterweight descent prevention device 16 to the counterweight spring shock absorber 15 when performing the maintenance operation of the elevator apparatus will be described.
First, the mounting plate 16c of the counterweight descent prevention device 16 is disposed so as to cover the upper portion of the counterweight spring shock absorber 15. Next, the rod-like stoppers 17 are inserted into the openings 16d of the respective mounting plates 16c from the outside to penetrate the mounting plates 16c, and between the wire diameters of the springs of the counterweight spring buffer 15 (that is, the spring springs). The lowering prevention device 16 is fixed to the spring shock absorber 15 by being inserted into the gap).
[0025]
With the above operation, the lowering prevention device 16 is positioned with respect to the spring shock absorber 15 and fixed so as not to come off.
However, when the lowering prevention device 16 is more firmly fixed to the spring shock absorber 15, the lowering prevention device 16 is further fixed to the spring shock absorber 15 after the lowering device 16 is fixed to the spring shock absorber 15 by the above operation. Rotate to advance downward. As a result, the rod-like stopper 17 bites into the spring of the spring shock absorber 15 at a deeper position, and the lowering prevention device 16 can be firmly fixed to the spring shock absorber 15 so as to eliminate rattling or the like.
[0026]
When the rod-like stopper 17 is inserted between the spring wire diameters of the spring shock absorber 15, the rod-like stopper at an appropriate position so as not to disturb the spring stroke even during the shock absorber operation of the spring shock absorber 15. It is also possible to regulate the insertion of the spring 17 and adjust the spring shock absorber so as not to hinder the shock absorbing performance. FIG. 4 is a partial cross-sectional view of the counterweight descent prevention safety device according to the present invention showing the state where the descent prevention device 16 is attached to the spring shock absorber 15 in this manner.
[0027]
In the above embodiment, the counterweight descending prevention device 16 is provided with a plurality of mounting plates 16c to be attached to the spring shock absorber 15. However, the lower diameter of the lowering prevention device 16 is expanded and an opening is provided. The upper part of the spring shock absorber 15 may be covered, and the rod-shaped stopper 17 may be fitted into this opening to be attached to the spring shock absorber 15. The lower cross-sectional shape of the lowering prevention device 16 may be circular or quadrangular.
[0028]
As described above, since the elevator apparatus according to Embodiment 1 of the present invention is configured as described above for the descent prevention safety device for the counterweight, even when a spring shock absorber is used as the counterweight buffer, It becomes possible to easily attach the weight lowering prevention device.
[0029]
Embodiment 2
In the first embodiment, the configuration in which the counterweight lowering prevention device 16 is attached to the counterweight spring shock absorber 15 and used as the lowering prevention safety device for the counterweight of the elevator apparatus has been described. However, the configuration of the safety device by the combination of the spring shock absorber 15 and the lowering prevention device 16 can be used as a lowering prevention safety device for the elevator car.
[0030]
That is, as a car shock absorber for limiting the lowering of the car within a predetermined range during normal operation, a car shock absorber having the same structure as the spring shock absorber 15 described above is used. Furthermore, the counterweight is used as a car descent prevention device that is attached to the car spring shock absorber during elevator maintenance operation and prevents the car from descending beyond the allowable range for ensuring the safety of maintenance personnel. The thing of the structure similar to the descent | fall prevention device 16 is used. With such a configuration, even when a spring shock absorber is used as the car shock absorber, the car lowering prevention device can be easily attached to the car spring shock absorber.
[0031]
Embodiment 3
In the first embodiment and the second embodiment, the lowering prevention device 16 is attached to the spring shock absorber 15 and used for either the lowering prevention safety device for the counterweight of the elevator device or the lowering prevention safety device for the car. Explained. However, the configuration in which the lowering prevention device 16 is attached to the spring shock absorber 15 can be used simultaneously for both the lowering prevention safety device for the counterweight of the elevator device and the lowering prevention safety device for the car. By adopting such a configuration, even when spring shock absorbers are used for both the counterweight shock absorber and the car shock absorber, it is possible to easily attach the corresponding descent prevention devices.
[0032]
【The invention's effect】
According to the elevator apparatus of the present invention, the counterweight (cage) lowering prevention device is mounted so as to cover the top of the counterweight (cage) spring shock absorber from above, so that the counterweight (cage) is used. Even when a spring shock absorber is used as the shock absorber, there is an effect that the counterweight (cage) lowering prevention device can be easily attached.
[0033]
The counterweight (cage) lowering prevention device includes an opening and a rod-like stopper fitted into the opening, and the rod-like stopper is inserted into the opening of the counterweight (car) lowering prevention device from the outside. In addition, it is attached to the counterweight (cage) spring shock absorber by being locked between the wire diameters of the counterweight (cage) spring shock absorbers. There is an effect that can be done more reliably.
[0034]
Further, the counterweight lowering device prevents the counterweight (cage) spring shock absorber from being covered from above and rotates it with respect to the counterweight (cage) spring shock absorber. Since it can be attached to the shock absorber, there is an effect that a stronger attachment is possible.
[Brief description of the drawings]
FIG. 1 is a side view showing a counterweight lowering safety device according to Embodiment 1 of the present invention.
FIG. 2 is a perspective view showing a counterweight descent prevention device according to Embodiment 1 of the present invention.
FIG. 3 is a cross-sectional view taken along the arrow in FIG.
FIG. 4 is a partial cross-sectional view showing a counterweight descending safety device according to Embodiment 1 of the present invention.
FIG. 5 is a side view of a hoistway showing the configuration of a conventional elevator apparatus.
FIG. 6 is a front view and a side view showing a safety device for a conventional elevator apparatus. FIG. 7 is a perspective view showing a counterweight descent prevention device for a conventional elevator apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Elevator hoistway 2 Car 3 Counterweight 6 Lifting car 7 Main rope 15 Counterweight shock absorber 16 Counterweight descent prevention device 16b Lifting pipe 16c Mounting plate 16d Opening 17 Rod-shaped stopper

Claims

A car and a counterweight that are connected to each other by main ropes and move up and down the hoistway in opposite directions, and a counterweight that is provided at the bottom of the hoistway and is disposed opposite the counterweight during normal operation. Elevator apparatus comprising: a spring shock absorber; and a counterweight lowering prevention device which is attached to the counterweight spring shock absorber during maintenance operation and prevents the counterweight from descending beyond a predetermined position. Because
The counterweight descent prevention device includes an opening and a rod-like stopper that is inserted into the opening.
The counterweight lowering prevention device is configured so that the bar-shaped stopper is fitted into the opening from the outside and is locked between the wire diameters of the counterweight springs of the counterweight spring buffer. It is attached to cover the top of the spring shock absorber for the top,
The rod-like stopper is restricted from being inserted into the opening so as not to interfere with the stroke of the helical spring during the buffering operation of the counterweight spring shock absorber. Elevator device.

The counterweight descent prevention device is attached to the counterweight spring shock absorber by covering the counterweight spring shock absorber from above and rotating with respect to the counterweight spring shock absorber. The elevator apparatus according to claim 1 .

A car and a counterweight that are connected to each other by main ropes and move up and down the hoistway in opposite directions, and a spring for a car that is provided at the bottom of the hoistway and is opposed to the car during normal operation. An elevator apparatus comprising a shock absorber and a car descent preventing device that is attached to the car spring shock absorber during maintenance operation and prevents the descent of the car from falling below a predetermined position,
The car lowering prevention device includes an opening, and a rod-like stopper fitted into the opening,
The car descent prevention device is configured such that the rod-like stopper is fitted into the opening from the outside and is locked between the wire diameters of the helical springs of the car spring shock absorber. It is attached so as to cover the top of the vessel from the top,
The rod-shaped stopper is restricted from being inserted into the opening so as not to hinder the stroke of the helical spring during the buffering operation of the cage spring shock absorber. Elevator equipment to do.

The car descent prevention device is attached to the car spring shock absorber by covering the car spring shock absorber from above and rotating with respect to the car spring shock absorber. 3. The elevator apparatus according to 3 .