JP4160456B2

JP4160456B2 - Elevator hoisting machine

Info

Publication number: JP4160456B2
Application number: JP2003192890A
Authority: JP
Inventors: 正信伊藤; 厚松浦; 荒堀　　昇
Original assignee: Hitachi Ltd; Mito Engineering Service Co Ltd
Current assignee: Hitachi Ltd; Mito Engineering Service Co Ltd
Priority date: 2003-07-07
Filing date: 2003-07-07
Publication date: 2008-10-01
Anticipated expiration: 2023-07-07
Also published as: JP2005029286A

Description

【０００１】
【発明の属する技術分野】
本発明は、エレベーター用巻上機に係り、特に、電動機と綱駆動車と制動装置とが一つの枠体上に支持されているエレベーター用巻上機に関する。
【０００２】
【従来の技術】
一つの枠体上に電動機と綱駆動車と制動装置とが支持されているエレベーター用巻上機は、例えば特許文献１に示すように既に提案されている。
【０００３】
【特許文献１】
特開２００１−３２２７８１号公報（図１，図２及び段落番号０００７）
【０００４】
【発明が解決しようとする課題】
特許文献１に記載のエレベーター用巻上機は、制動装置としての構成部品が、枠体内に回転自在に軸支された回転体の内側に全て収納されている。そのために、巻上機としてはユニット化できて有利である。しかし、制動装置の組立てや各種部品の調整などが、実装密度の高い限られた空間での作業となるので、厄介で長時間を要する問題がある。
【０００５】
本発明の目的は、一つの枠体上に電動機と綱駆動車と制動装置とが支持され、しかも制動装置の組立作業や各種調整作業が容易に行い得るエレベーター用巻上機を提供することにある。
【０００６】
【課題を解決するための手段】
本発明は上記目的を達成するために、収納固定枠の内側に回転自在に回転体を軸支し、前記収納固定枠と前記回転体間に駆動電動機を構成し、前記回転体の外周部にロープ溝を設け、前記回転体の周面に対向して制動装置の制動部を配置し、この制動部を駆動する前記制動装置の駆動部を前記収納固定枠の前記回転体よりも半径方向外側に設置したのである。
【０００７】
上記構成によれば、制動装置の制動部を収納固定枠内に、駆動部を収納固定枠外に位置するようにしたので、制動装置の制動部においては作業空間が広がり、また制動装置の駆動部においては開放された空間となるために、制動装置の組立作業や各種調整作業を不自由することなく、容易に行うことができる。
【０００８】
【発明の実施の形態】
以下本発明によるエレベーター用巻上機の第１の実施の形態を図１〜図３に基づいて説明する。
【０００９】
巻上機１は、大きく分けると、収納固定枠２と、この収納固定枠２の内側に回転自在に軸支された回転体３と、これら収納固定枠２と回転枠３との対向部分に構成された駆動用電動機４と、前記回転体３の外周面に綱駆動車を形成するために彫られた複数のロープ溝５と、前記回転体３の周面に接触・開離して制動力の付与と開放を行う２組の制動装置６Ａ，６Ｂとを備えている。そして、回転体３と駆動用電動機４とロープ溝５と制動装置６Ａ，６Ｂとは、すべて収納固定枠２に支持されている。
【００１０】
前記収納固定枠２は、垂直方向に配置した底部２Ａと、この底部２Ａから一方向に延在させた環状壁２Ｂと、この環状壁２Ｂの開口縁２Ｃ端にボルト等の固定手段Ｂによって固定された強度部材７とを有する。この強度部材７は、前記環状壁２Ｂの開口縁２Ｃを完全に塞ぐような蓋状のものでもよく、図示のように内部が覗き込める点検窓７Ｗを設けてもよい。また、前記収納固定枠２は、垂直な底部２Ａに直交するように主軸８を固定しており、前記環状壁２Ｂは、中心がこの主軸８の中心と一致するように構成している。
【００１１】
前記回転体３は、前記主軸８に軸受９を介して回転自在に支持されており、前記収納固定枠２の底部２Ａに対向しこの底部２Ａと平行な底部３Ａを有している。この底部３Ａから前記収納固定枠２の開口縁２Ｃ側に向かって前記主軸８と同心の第１周壁３Ｂを延在しており、この第１周壁３Ｂの外周面にエレベーターの乗かごを吊るロープ１０を巻掛けるための前記ロープ溝５を複数形成している。したがって、このロープ溝５を形成した第１周壁３Ｂが綱駆動車となる。この第１周壁３Ｂの端部からは、前記開口縁２Ｃ側に向かって第１周壁３よりも大径の第２周壁３Ｃが、前記主軸８と同心となるように形成されている。
【００１２】
前記駆動電動機４は、永久磁石式同期電動機であり、前記回転体の第２周壁３Ｃの外周面に永久磁石を固定して回転子１１を構成しており、この回転子１１と対向する前記収納固定枠２の環状壁２Ｂの内側には固定子鉄心と電機子巻線とを備えた固定子１２を構成し、前記回転子１１と周方向の隙間を介して対向させている。
【００１３】
前記２組の制動装置６Ａ，６Ｂは、互いに反対方向に制動動作を行うように、前記主軸８を中心として左右対称に配置されている。これら２組の制動装置６Ａ，６Ｂの夫々は、前記回転体３の第２周壁３Ｃの内周面に形成した制動面３Ｄに対向して設けられた制動部１３と、この制動部１３を駆動し前記回転体３よりも半径方向外側に設置された駆動部１４とを備えている。
【００１４】
そして前記制動部１３は、下端を前記強度部材７に支持軸１５によって回転自在に軸支され上方に延在する制動レバー１６と、この制動レバー１６に揺動自在に支持され前記回転体３の第２周壁３Ｃの内周面に対向して位置する制動片１７とを備えており、これらは前記回転体３の第２周壁３Ｃ内に配置されている。尚、前記制動片１７は、その周面が制動面３Ｄの周面と等間隔で対向するように、求心ばね１８によって前記制動レバー１６に支持されている。
【００１５】
前記制動レバー１６の上方は途中から前記回転体３の第２周壁３Ｃの外側に折れ曲がり、そこから前記強度部材７に設けた縦溝７Ｇに入り、そのまま収納固定枠２の頂部よりも上方に延在されている。この制動レバー１６が前記縦溝７Ｇを上方に貫通した位置は、ゴム等の材料からなる可撓カバー１９で被われ、前記制動面３Ｄと制動片１７との摩耗粉が貫流しないようにしている。
【００１６】
前記制動レバー１６の上方の延在端１６Ｅには、アーマチュア２０のねじ部２０Ｓが直交するようにねじ込まれ、ロックナット２１で固定されている。そして、前記収納固定枠２の前記アーマチュア２０に対向する位置には、電磁石２２が固定され、この電磁石２２を励磁することにより前記アーマチュア２０を磁気吸引するようにしている。
【００１７】
また、前記収納固定枠２上には、ばねロッド２３の一端が回動自在に軸支されており、ばねロッド２３の他端は、前記アーマチュア２０のねじ部２０Ｓと電磁石２２を遊貫している。そして、ばねロッド２３の他端側から制動ばね２４を前記アーマチュア２０に当接するように嵌着し、ばねロッド２３の他端にばね押さえ２５をナット２６で固定することにより、前記制動ばね２４に圧縮力を付与している。
【００１８】
上記のように構成されたエレベーター用の巻上機１をエレベーター乗かごが昇降する昇降路内の固定部に固定し、前記ロープ１０を綱駆動車である前記第１周壁３Ｂのロープ溝５に巻掛けて乗かご（図示せず）を吊下げる。このとき、制動装置６Ａ，６Ｂの電磁石２２は励磁されておらず、制動ばね２４の圧縮力によって、制動レバー１４が制動片１７を回転体３の制動面３Ｄに押圧する方向に押されており、回転体３の回転を拘束している。
【００１９】
そして、乗かごを昇降させる指令があると、駆動電動機４が付勢されると同時に電磁石２２が励磁され、アーマチュア２０を吸着する。アーマチュア２０の吸着により、制動レバー１６は支持軸１５を支点として回動し、制動片１７を制動面３Ｄから開離させる。制動片１７の制動面３Ｄからの開離により、回転体３は拘束を解かれ、駆動電動機４により回転し始める。その結果、回転体３に設けたロープ溝５とロープ１０間の摩擦力によりロープ１０が駆動され、乗かごは昇降を開始する。
【００２０】
また、昇降中の乗かごを着床階に停止させる指令があると、駆動電動機４は減速を開始し、十分に減速された停止直前に、前記電磁石２２と電動機４の励磁を解除する。その結果、アーマチュア２０は制動ばね２４の圧縮力によって電磁石２２から開離され、制動片１７を制動面３Ｄに押圧する方向に制動レバー１６を回動する。これにより、回転体３は回転を停止して拘束され、ロープ１０の移動を停止させる。
【００２１】
ところで、上記構成の巻上機１は、制動装置６Ａ，６Ｂの制動部１３を収納固定枠２の内側に、駆動部１４を収納固定枠２の外側に配置したので、収納固定枠２内への制動装置６Ａ，６Ｂの部品は余裕を持って組み込むことができると共に、制動装置６Ａ，６Ｂの各種調整作業も容易に行うことができる。
【００２２】
即ち、収納固定枠２の外側で、ばねロッド２３の端部のナット２６を回すことにより制動ばね２４の圧縮力を調整することができ、その結果、制動片１７の制動面３Ｄへの押圧力を調整することができる。また、アーマチュア２０を回してねじ部２０Ｓを、制動レバー１６の延在端１６Ｅに対して進退させることにより、アーマチュア２０と電磁石２２間のストロークＳ１を調整できると同時に、制動片１７と制動面３Ｄ間のストロークＳ２を調整することができる。具体的には、アーマチュア２０と電磁石２２間のストロークＳ１を規定すると、制動片１７と制動面３Ｄ間のストロークＳ２が、アーマチュア２０と電磁石２２間のストロークＳ１に制動レバー１６の作用長さの比Ｌ１／Ｌ２で決められる。逆に、制動片１７と制動面３Ｄ間のストロークＳ２を規定すると、アーマチュア２０と電磁石２２間のストロークＳ１が決められる。
【００２３】
尚、上記実施の形態においては、夫々駆動部１４を備えた２組の制動装置６Ａ，６Ｂを設置したのは、一方の制動装置が故障しても他方の制動装置で所望の機能を達成できるようにしたものである。しかしながら、１組のみを設置してもよく、さらには、駆動部１４を共用できるようにしてもよい。
【００２４】
また、上記制動装置６Ａ，６Ｂの駆動部１４は、電磁石２２を固定してアーマチュア２０を可動としたが、電磁石２２を可動としてアーマチュア２０を固定するようにしてもよい。
【００２５】
図４〜図６は、本発明によるエレベーター用巻上機の第２の実施の形態を示すもので、第１の実施の形態と同一部品は同一符号で示したので、詳細な説明は省略する。
【００２６】
本実施の形態において、第１の実施の形態と異なる構成は、アーマチュア２０の動作を回動レバー２７を介して制動レバー１６の延在端１６Ｅへ伝達するようにした点である。
【００２７】
即ち、制動ばね２４は、収納固定枠２上に固定した軸受台２８に一端を回動自在に軸支したばねロッド２３を、制動レバー１６の延在端１６Ｅに遊動できるように貫通させ、その貫通側に嵌着されている。嵌着された制動ばね２４は、ばねロッド２３の端部に嵌着したばね押さえ２５とねじ込まれたナット２６によって固定され、圧縮力が付与されている。
【００２８】
一方、電磁石２２は、収納固定枠２上に固定されており、前記ばねロッド２３と平行な押しロッド２９を軸受３０を介して貫通させている。この押しロッド２９の反軸受台２８側にアーマチュア２０を固定し、軸受台２８側にばね座３１を設け、このばね座３１と電磁石２２間に前記アーマチュア２０と電磁石２０間のストロークＳ１を保持する保持ばね３２を装着している。
【００２９】
前記軸受台２８には、前記回動レバー２７が平面的の回動自在に軸支されており、回動レバー２７の第１端２７Ａは、前記制動レバー１６の延在端１６Ｅに制動ばね２４の圧縮力に逆らう方向から当接している。さらに、回動レバー２７の第２端一端２７Ｂには、押しボルト３３をねじ込んでロックナット３４で固定している。そして、押しボルト３３は前記ばね座３１に当接させている。
【００３０】
上記構成において、乗かごが停止時は、制動ばね２４の圧縮力により、青銅レバー１６が押圧され、制動片１７を制動面３Ｄに押付けて巻上機１の回転を拘束している。起動指令があると、電磁石２２と駆動電動機４が付勢され、アーマチュア２０が磁気吸着する。アーマチュア２０の吸着により、押しロッド２９−押しボルト３３−回動レバー２７を介して作動レバー１６を制動ばね２４の圧縮力に逆らって変位させ、制動面３Ｄから制動片１７を引き離す。これにより駆動電動機４が回転体３を回転させ、ロープ溝５に巻掛けたロープ１０を駆動する。
【００３１】
乗かごの移動を停止させる場合には、電磁石２２と駆動電動機４の付勢を解けば、制動ばね２４の圧縮力により、制動レバー１６は元の位置に戻され、制動片１７を制動面３Ｄに押圧して回転体３の回転を拘束する。同時に、制動レバー１６の変位によって回動レバー２７−押しボルト３３−押しロッド２９を経由してアーマチュ２０を元の位置に戻す。
【００３２】
本実施の形態によれば、第１の実施の形態と同じような効果を奏することができる。
【００３３】
ところで、アーマチュア２０と電磁石２２間のストロークＳ１の調整及び制動片１７と制動面３Ｄ間のストロークＳ２の調整は、第１の実施の形態と同じであるが、アーマチュア２０と電磁石２２間のストロークＳ１及び制動片１７と制動面３Ｄ間のストロークＳ２の関係に、制動レバー１６の作用長さの比Ｌ２／Ｌ１のほかに、回動レバー２７の作用長さの比Ｌ４／Ｌ３が考慮される。即ち、制動ばね２４により制動片１７が制動面３Ｄに押圧されている状態で、押しボルト３３と押しロッド２９の接触位置をロックナット３４を弛め、回動レバー２７に対する押しボルト３３のねじ込み量を調整して行う。この調整時に、押しボルト３３と押しロッド２９の接触部に、制動ばね２４のばね力はほとんど作用していないので、容易に作業することができる。
【００３４】
【発明の効果】
以上説明したように本発明によれば、一つの枠体上に電動機と綱駆動車と制動装置とが支持され、しかも制動装置の組立作業や各種調整作業が容易に行い得るエレベーター用巻上機を得ることができる。
【図面の簡単な説明】
【図１】本発明によるエレベーター用巻上機の第１の実施の形態を示す正面図。
【図２】図１のＡ−Ａ線に沿う縦断側面図。
【図３】図１の平面図。
【図４】本発明によるエレベーター用巻上機の第２の実施の形態を示す正面図。
【図５】図４のＢ−Ｂ線に沿う縦断側面図。
【図６】図４の平面図。
【符号の説明】
１…巻上機、２…収納固定枠、３…回転体、３Ｂ…第１周壁、３Ｃ…第２周壁、３D…制動面、４…駆動電動機、５…ロープ溝、６Ａ，６Ｂ…制動装置、７…強度部材、８…主軸、１０…ロープ、１１…回転子、１２…固定子、１３…制動部、１４…駆動部、１６…制動レバー、１７…制動面、２０…アーマチュア、２２…電磁石、２４…制動ばね、２７…回動レバー。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an elevator hoisting machine, and more particularly, to an elevator hoisting machine in which an electric motor, a rope drive vehicle, and a braking device are supported on one frame.
[0002]
[Prior art]
An elevator hoisting machine in which an electric motor, a rope drive vehicle, and a braking device are supported on one frame has already been proposed, for example, as shown in Patent Document 1.
[0003]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-322781 (FIGS. 1 and 2 and paragraph number 0007)
[0004]
[Problems to be solved by the invention]
In the elevator hoist described in Patent Document 1, all components as a braking device are housed inside a rotating body that is rotatably supported in a frame. Therefore, the hoisting machine can be unitized and is advantageous. However, the assembly of the braking device and the adjustment of various parts are performed in a limited space with a high mounting density, which is troublesome and requires a long time.
[0005]
An object of the present invention is to provide an elevator hoisting machine in which an electric motor, a rope drive vehicle, and a braking device are supported on a single frame body, and in addition, assembly work and various adjustment operations of the braking device can be easily performed. is there.
[0006]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, the present invention provides a rotating body that is rotatably supported inside the storage and fixing frame, and a drive motor is configured between the storage and fixing frame and the rotating body. A rope groove is provided, a braking portion of the braking device is arranged opposite to the peripheral surface of the rotating body, and the driving portion of the braking device that drives the braking portion is radially outward from the rotating body of the storage fixing frame. It was installed in.
[0007]
According to the above configuration, since the braking portion of the braking device is positioned inside the storage fixing frame and the driving portion is positioned outside the storage fixing frame, the work space is widened in the braking portion of the braking device, and the driving portion of the braking device In this case, since the space is open, the assembly work and various adjustment work of the braking device can be easily performed without any inconvenience.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
A first embodiment of an elevator hoist according to the present invention will be described below with reference to FIGS.
[0009]
The hoisting machine 1 is roughly divided into a storage fixing frame 2, a rotating body 3 that is rotatably supported inside the storage fixing frame 2, and an opposing portion between the storage fixing frame 2 and the rotation frame 3. Driving motor 4 configured, a plurality of rope grooves 5 carved to form a rope drive wheel on the outer peripheral surface of the rotating body 3, and the braking force by contacting and separating from the peripheral surface of the rotating body 3 Are provided with two sets of braking devices 6A and 6B. The rotating body 3, the driving motor 4, the rope groove 5, and the braking devices 6A and 6B are all supported by the storage fixing frame 2.
[0010]
The storage fixing frame 2 is fixed by a fixing means B such as a bolt at a bottom portion 2A arranged in a vertical direction, an annular wall 2B extending in one direction from the bottom portion 2A, and an opening edge 2C end of the annular wall 2B. Strength member 7. The strength member 7 may be a lid that completely closes the opening edge 2C of the annular wall 2B, or may be provided with an inspection window 7W through which the inside can be seen as shown in the figure. Further, the storage fixing frame 2 fixes the main shaft 8 so as to be orthogonal to the vertical bottom portion 2 A, and the annular wall 2 B is configured such that the center coincides with the center of the main shaft 8.
[0011]
The rotating body 3 is rotatably supported on the main shaft 8 via a bearing 9, and has a bottom 3A that faces the bottom 2A of the storage fixing frame 2 and is parallel to the bottom 2A. A rope that extends from the bottom 3A toward the opening edge 2C side of the storage fixing frame 2 and that is concentric with the main shaft 8 and suspends an elevator car on the outer peripheral surface of the first peripheral wall 3B. A plurality of the rope grooves 5 for winding 10 are formed. Therefore, the 1st surrounding wall 3B which formed this rope groove 5 turns into a rope drive vehicle. From the end of the first peripheral wall 3B, a second peripheral wall 3C having a diameter larger than that of the first peripheral wall 3 is formed concentrically with the main shaft 8 toward the opening edge 2C.
[0012]
The drive motor 4 is a permanent magnet type synchronous motor, and a permanent magnet is fixed to the outer peripheral surface of the second peripheral wall 3C of the rotating body to constitute a rotor 11, and the storage facing the rotor 11 is performed. A stator 12 having a stator core and an armature winding is formed inside the annular wall 2B of the fixed frame 2, and is opposed to the rotor 11 via a circumferential gap.
[0013]
The two sets of braking devices 6A and 6B are arranged symmetrically about the main shaft 8 so as to perform a braking operation in opposite directions. Each of these two sets of braking devices 6A and 6B drives a braking portion 13 provided facing a braking surface 3D formed on the inner peripheral surface of the second peripheral wall 3C of the rotating body 3, and the braking portion 13. And a drive unit 14 installed on the outer side in the radial direction of the rotating body 3.
[0014]
The brake unit 13 has a lower end rotatably supported by a support shaft 15 on the strength member 7 and extends upward, and is supported by the brake lever 16 so as to be swingable. The brake piece 17 is provided so as to face the inner peripheral surface of the second peripheral wall 3 C, and these are arranged in the second peripheral wall 3 C of the rotating body 3. The braking piece 17 is supported by the braking lever 16 by a centripetal spring 18 so that the circumferential surface thereof faces the circumferential surface of the braking surface 3D at equal intervals.
[0015]
The upper part of the brake lever 16 is bent from the middle to the outside of the second peripheral wall 3C of the rotating body 3, and enters the vertical groove 7G provided in the strength member 7 from there, and extends upward from the top of the storage fixing frame 2 as it is. Be present. The position where the brake lever 16 penetrates the vertical groove 7G upward is covered with a flexible cover 19 made of a material such as rubber so that the abrasion powder between the brake surface 3D and the brake piece 17 does not flow. .
[0016]
A threaded portion 20S of the armature 20 is screwed into the extending end 16E above the brake lever 16 so as to be orthogonal to each other and fixed with a lock nut 21. An electromagnet 22 is fixed at a position facing the armature 20 of the storage fixing frame 2, and the armature 20 is magnetically attracted by exciting the electromagnet 22.
[0017]
Further, one end of a spring rod 23 is pivotally supported on the storage fixing frame 2, and the other end of the spring rod 23 penetrates the screw portion 20 S of the armature 20 and the electromagnet 22. Yes. Then, the brake spring 24 is fitted from the other end side of the spring rod 23 so as to come into contact with the armature 20, and a spring retainer 25 is fixed to the other end of the spring rod 23 with a nut 26. A compressive force is applied.
[0018]
The elevator hoisting machine 1 configured as described above is fixed to a fixing portion in a hoistway where the elevator car moves up and down, and the rope 10 is inserted into the rope groove 5 of the first peripheral wall 3B which is a rope driving vehicle. Wrap and suspend a car (not shown). At this time, the electromagnets 22 of the braking devices 6A and 6B are not excited, and the braking lever 14 is pushed in the direction of pressing the braking piece 17 against the braking surface 3D of the rotating body 3 by the compression force of the braking spring 24. The rotation of the rotating body 3 is restricted.
[0019]
When there is a command to raise or lower the car, the drive motor 4 is energized and the electromagnet 22 is excited and attracts the armature 20. By the adsorption of the armature 20, the brake lever 16 rotates about the support shaft 15 as a fulcrum, and the brake piece 17 is separated from the brake surface 3D. When the braking piece 17 is separated from the braking surface 3 D, the rotating body 3 is unconstrained and starts to rotate by the drive motor 4. As a result, the rope 10 is driven by the frictional force between the rope groove 5 provided on the rotating body 3 and the rope 10, and the car starts to move up and down.
[0020]
In addition, when there is a command to stop the moving car on the landing floor, the drive motor 4 starts decelerating and releases the excitation of the electromagnet 22 and the electric motor 4 immediately before the sufficiently decelerated stop. As a result, the armature 20 is separated from the electromagnet 22 by the compressive force of the brake spring 24, and the brake lever 16 is rotated in a direction in which the brake piece 17 is pressed against the brake surface 3D. Thereby, the rotary body 3 stops rotation and is restrained, and stops the movement of the rope 10.
[0021]
By the way, in the hoisting machine 1 configured as described above, the braking unit 13 of the braking devices 6A and 6B is disposed inside the storage and fixing frame 2, and the driving unit 14 is disposed outside the storage and fixing frame 2. The brake devices 6A and 6B can be assembled with a margin, and various adjustment operations of the brake devices 6A and 6B can be easily performed.
[0022]
That is, the compression force of the braking spring 24 can be adjusted by turning the nut 26 at the end of the spring rod 23 outside the storage fixing frame 2, and as a result, the pressing force of the braking piece 17 on the braking surface 3 D. Can be adjusted. Further, the stroke S1 between the armature 20 and the electromagnet 22 can be adjusted by turning the armature 20 to advance and retract the threaded portion 20S with respect to the extending end 16E of the braking lever 16, and at the same time, the braking piece 17 and the braking surface 3D. The stroke S2 between them can be adjusted. Specifically, when the stroke S1 between the armature 20 and the electromagnet 22 is defined, the stroke S2 between the braking piece 17 and the braking surface 3D is the ratio of the working length of the braking lever 16 to the stroke S1 between the armature 20 and the electromagnet 22. It is determined by L1 / L2. Conversely, when the stroke S2 between the braking piece 17 and the braking surface 3D is defined, the stroke S1 between the armature 20 and the electromagnet 22 is determined.
[0023]
In the above embodiment, the two sets of braking devices 6A and 6B each provided with the drive unit 14 are installed, so that even if one braking device fails, the other braking device can achieve a desired function. It is what I did. However, only one set may be installed, and the drive unit 14 may be shared.
[0024]
Moreover, although the drive unit 14 of the braking devices 6A and 6B fixes the electromagnet 22 and makes the armature 20 movable, the electromagnet 22 may be made movable and the armature 20 may be fixed.
[0025]
4 to 6 show a second embodiment of an elevator hoist according to the present invention. The same parts as those in the first embodiment are indicated by the same reference numerals, and detailed description thereof is omitted. .
[0026]
In the present embodiment, the configuration different from the first embodiment is that the operation of the armature 20 is transmitted to the extending end 16E of the brake lever 16 via the rotating lever 27.
[0027]
That is, the brake spring 24 penetrates the spring rod 23 whose one end is pivotally supported on the bearing base 28 fixed on the storage fixing frame 2 so that the spring rod 23 can freely move in the extended end 16E of the brake lever 16, It is fitted on the penetrating side. The fitted braking spring 24 is fixed by a spring retainer 25 fitted to the end of the spring rod 23 and a screwed nut 26, and is given a compressive force.
[0028]
On the other hand, the electromagnet 22 is fixed on the storage fixing frame 2, and a push rod 29 parallel to the spring rod 23 is passed through the bearing 30. The armature 20 is fixed to the push rod 29 on the side opposite to the bearing base 28, the spring seat 31 is provided on the bearing base 28 side, and the stroke S1 between the armature 20 and the electromagnet 20 is held between the spring seat 31 and the electromagnet 22. A holding spring 32 is attached.
[0029]
The pivot lever 27 is pivotally supported on the bearing base 28 so as to be planarly rotatable. The first end 27A of the pivot lever 27 is connected to the extending end 16E of the brake lever 16 and the brake spring 24. It abuts from the direction against the compression force. Further, a push bolt 33 is screwed into the second end one end 27 B of the rotation lever 27 and fixed with a lock nut 34. The push bolt 33 is in contact with the spring seat 31.
[0030]
In the above configuration, when the car is stopped, the bronze lever 16 is pressed by the compression force of the braking spring 24, and the braking piece 17 is pressed against the braking surface 3D to constrain the rotation of the hoisting machine 1. When an activation command is issued, the electromagnet 22 and the drive motor 4 are energized, and the armature 20 is magnetically attracted. By the adsorption of the armature 20, the operating lever 16 is displaced against the compression force of the braking spring 24 via the push rod 29, the push bolt 33, and the rotation lever 27, and the braking piece 17 is pulled away from the braking surface 3 D. As a result, the drive motor 4 rotates the rotating body 3 and drives the rope 10 wound around the rope groove 5.
[0031]
When stopping the movement of the car, if the urging force of the electromagnet 22 and the drive motor 4 is released, the braking lever 16 is returned to the original position by the compression force of the braking spring 24, and the braking piece 17 is moved to the braking surface 3D. To restrain the rotation of the rotating body 3. At the same time, the armature 20 is returned to the original position via the rotation lever 27-the push bolt 33-the push rod 29 by the displacement of the brake lever 16.
[0032]
According to the present embodiment, the same effects as those of the first embodiment can be obtained.
[0033]
By the way, the adjustment of the stroke S1 between the armature 20 and the electromagnet 22 and the adjustment of the stroke S2 between the braking piece 17 and the braking surface 3D are the same as in the first embodiment, but the stroke S1 between the armature 20 and the electromagnet 22 is performed. In addition, in addition to the ratio L2 / L1 of the operating length of the brake lever 16, the ratio L4 / L3 of the operating length of the rotating lever 27 is considered in the relationship of the stroke S2 between the braking piece 17 and the braking surface 3D. That is, in a state where the braking piece 17 is pressed against the braking surface 3D by the braking spring 24, the lock nut 34 is loosened at the contact position between the pressing bolt 33 and the pressing rod 29, and the screw bolt 33 is screwed into the rotating lever 27. Adjust and adjust. At the time of this adjustment, since the spring force of the brake spring 24 hardly acts on the contact portion between the push bolt 33 and the push rod 29, the work can be easily performed.
[0034]
【The invention's effect】
As described above, according to the present invention, an elevator hoisting machine that supports an electric motor, a rope drive vehicle, and a braking device on a single frame, and that can easily perform assembly work and various adjustment operations of the braking device. Can be obtained.
[Brief description of the drawings]
FIG. 1 is a front view showing a first embodiment of an elevator hoist according to the present invention.
FIG. 2 is a longitudinal side view taken along the line AA in FIG.
FIG. 3 is a plan view of FIG. 1;
FIG. 4 is a front view showing a second embodiment of an elevator hoist according to the present invention.
FIG. 5 is a longitudinal side view taken along the line BB in FIG. 4;
6 is a plan view of FIG. 4. FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Hoisting machine, 2 ... Storage fixing frame, 3 ... Rotating body, 3B ... 1st surrounding wall, 3C ... 2nd surrounding wall, 3D ... Braking surface, 4 ... Drive motor, 5 ... Rope groove, 6A, 6B ... Braking device 7 ... strength member, 8 ... main shaft, 10 ... rope, 11 ... rotor, 12 ... stator, 13 ... brake part, 14 ... drive part, 16 ... brake lever, 17 ... brake surface, 20 ... armature, 22 ... Electromagnet 24 ... braking spring 27 ... rotating lever.

Claims

A storage fixing frame formed in a bowl shape, a stator of a driving motor fixed to an inner peripheral surface on the opening edge side of the storage fixing frame, and a flange-shaped bottom surface of the storage fixing frame toward the opening edge side A projecting main shaft, a hook-shaped rotating body that is disposed in the housing fixing frame and is rotatably supported by the main shaft, a rope groove provided on an outer peripheral portion of the hook-shaped rotating body, and the hook-shaped a rotor of the rotating body the stator opposed to fixed at a position the driving motor, and the braking surface kicked set on the inner peripheral surface of the cup-shaped rotating body, braking slides on said braking surface In the elevator hoisting machine provided with a braking device for applying power, the rotating body faces the bowl-shaped bottom of the storage fixing frame and is parallel to the bowl-shaped bottom, and from the outer diameter side of the bottom A first peripheral wall concentric with the main shaft toward the opening edge of the storage fixing frame, and formed on the outer periphery of the first peripheral wall. A rope groove, a second peripheral wall having a larger diameter than the first peripheral wall formed concentrically with the main shaft from the end of the first peripheral wall toward the opening edge of the storage fixing frame, and an inner periphery of the second peripheral wall A braking surface formed on the surface, the rotor of the drive motor is fixed to the outer peripheral surface of the second peripheral wall, and the braking device is formed on the inner peripheral surface of the second peripheral wall An elevator hoisting machine comprising: a braking part provided opposite to the driving part; and a driving part that drives the braking part and is disposed radially outside the rotating body.

The elevator hoisting machine according to claim 1 , wherein the drive unit of the braking device is fixed to the outside of the storage fixing frame .

3. The brake device according to claim 1 , wherein two sets of the brake device are provided symmetrically about the main shaft, and the drive unit of the brake device includes a brake spring and an electromagnet . Elevator hoisting machine.

A storage fixing frame formed in a bowl shape, a stator of a driving motor fixed to an inner peripheral surface on the opening edge side of the storage fixing frame, and a flange-shaped bottom surface of the storage fixing frame toward the opening edge side A projecting main shaft, a hook-shaped rotating body that is disposed in the housing fixing frame and is rotatably supported by the main shaft, a rope groove provided on an outer peripheral portion of the hook-shaped rotating body, and the hook-shaped A rotor of a driving motor fixed at a position facing the stator of the rotating body, a braking surface provided on an inner peripheral surface of the bowl-shaped rotating body, and an opening edge of the storage fixing frame In an elevator hoisting machine comprising a strength member to which a portion is mounted and a braking device that slides on the braking surface to apply a braking force, the rotating body faces the bowl-shaped bottom of the storage fixing frame A bottom portion parallel to the bowl-shaped bottom portion, and from the outer diameter side of the bottom portion toward the opening edge side of the storage fixing frame A first peripheral wall concentric with the main shaft, a rope groove formed on the outer periphery of the first peripheral wall, a first groove formed concentrically with the main shaft from the end of the first peripheral wall toward the opening edge of the storage fixing frame. A second peripheral wall having a diameter larger than that of the first peripheral wall; and a braking surface formed on an inner peripheral surface of the second peripheral wall, and the rotor of the drive motor is fixed to the outer peripheral surface of the second peripheral wall. The braking device includes a braking portion that slides on the braking surface and a driving portion that drives the braking portion, and the braking portion presses the braking surface within the storage fixing frame. And a braking lever that supports the braking piece and has one end pivotally supported by the strength member and the other end extending radially outward from the opening edge of the storage fixing frame. parts includes a damping spring for sliding said braking members to the braking surface by pressing the other end of the brake lever, the brake Against the force of the roots has an electromagnet which opens away the braking members by moving the brake lever from the braking surface, and that the braking device and symmetrically disposed two sets around the main shaft features and be Rue elevators hoisting machine.