JP4439470B2 - Thin hoisting machine for elevator - Google Patents

Thin hoisting machine for elevator Download PDF

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Publication number
JP4439470B2
JP4439470B2 JP2005508184A JP2005508184A JP4439470B2 JP 4439470 B2 JP4439470 B2 JP 4439470B2 JP 2005508184 A JP2005508184 A JP 2005508184A JP 2005508184 A JP2005508184 A JP 2005508184A JP 4439470 B2 JP4439470 B2 JP 4439470B2
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base
rotating body
hoisting machine
main shaft
brake
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JPWO2005019085A1 (en
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修喜 濱口
健二 井上
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0438—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a gearless driving, e.g. integrated sheave, drum or winch in the stator or rotor of the cage motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/02—Driving gear
    • B66D1/12—Driving gear incorporating electric motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
    • B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/30—Operating devices electrical

Description

この発明は、機械室レスエレベータに使用される薄形巻上機に関するものであり、構造の簡素化を図るとともに、薄型化と軽量化を実現したエレベータ用薄形巻上機に関する。  The present invention relates to a thin hoisting machine used for a machine room-less elevator, and more particularly to an elevator thin hoisting machine that achieves simplification of structure and reduction in thickness and weight.

従来の機械室レスエレベータに使用されている薄形巻上機としては、例えば、日本特開２０００−２８９９５４号公報に記載された薄形巻上機が知られている。この薄形巻上機においては、主索が駆動綱車に巻き掛けられている。そして、固定子巻線と電機子とによって駆動綱車が回転し、摩擦力によって主索が駆動されて、かご及び釣合いおもりを互いに反対方向へ昇降させる。エレベータのかごが所定のフロアに到着すると、電磁石を開放してブレーキばねのばね力をブレーキ腕、球面座、ブレーキシューを介して制動面に伝え、巻上機を停止させている。
従来の薄形巻上機では、以上のように構成されているので、多くの部品を必要とし、構成部品の組み合わせによる重量化、製作誤差を少なくするために各構成部品を高精度に加工したり、組み立てたりしなければならず、コストアップの原因となっていた。また全体の厚みも厚くなり、昇降路壁とかごとの間に巻上機を設置する機械室レス方式のエレベータでは、巻上機の厚さが昇降路平面積の拡大に繋がるという課題があった。As a thin hoist used in a conventional machine room-less elevator, for example, a thin hoist described in Japanese Patent Laid-Open No. 2000-289954 is known. In this thin hoist, the main rope is wound around the drive sheave. Then, the driving sheave is rotated by the stator winding and the armature, and the main rope is driven by the frictional force to raise and lower the car and the counterweight in the opposite directions. When the elevator car arrives at a predetermined floor, the electromagnet is opened and the spring force of the brake spring is transmitted to the braking surface via the brake arm, spherical seat and brake shoe, and the hoisting machine is stopped.
Since the conventional thin hoisting machine is configured as described above, a large number of parts are required, and each component is processed with high precision in order to reduce weight and manufacturing errors due to the combination of components. Or had to be assembled, which caused the cost to increase. Also, the thickness of the hoisting machine leads to an increase in the hoistway flat area in the machine room-less type elevator in which the hoisting machine is installed between the hoistway wall and the basket. .

この発明は、このような従来の問題点を解決するもので、構造を簡素化して構成部品点数を削減するとともに、幅方向の厚みを薄くして、薄型化、軽量化を図り、設置場所の自由度を向上させ、昇降路平面積を縮小したエレベータ用薄形巻上機を得ることを目的とする。  The present invention solves such a conventional problem, simplifies the structure and reduces the number of components, and reduces the thickness in the width direction to reduce the thickness and weight. The purpose is to obtain a thin hoisting machine for elevators with improved flexibility and reduced hoistway plane area.

第１図は、この発明の実施の形態１におけるエレベータ用薄形巻上機を示す正面図である。
第２図は、この発明の実施の形態１におけるエレベータ用薄形巻上機を示す断面図である。
第３図は、第２図の軸受部分の拡大断面図である。FIG. 1 is a front view showing an elevator thin hoist according to Embodiment 1 of the present invention.
FIG. 2 is a cross-sectional view showing the elevator hoisting machine according to Embodiment 1 of the present invention.
FIG. 3 is an enlarged sectional view of the bearing portion of FIG.

この発明をより詳細に説明するために、添付の図面に従ってこれを説明する。
第１図はこの発明の実施の形態１におけるエレベータ用薄形巻上機を示す正面図、第２図はこの発明の実施の形態１におけるエレベータ用薄形巻上機を示す断面図、第３図は第２図の軸受部分の拡大断面図である。
図において、軸方向に薄くなるように構成された基体２０２は、外周に後述する回転体２１９の一部を収容するとともに固定子２１８の収容空間を形成した開口縁部２０３を有し、この開口縁部２０３の先端とほぼ同一面となる底面２０４を有している。基体２０２の中心部には主軸２１７を回転支持する軸受２４０の軸受支持部２０５が設けられている。すなわち、主軸２１７を支持する軸受支持部２０５は基体２０２の底面２０４に接続されている。基体２０２の外周の開口縁部２０３の内面には固定子２１８が固定子巻線と共に設けられている。椀状の回転体２１９は、基体２０２内にその一部が嵌り込むように配置されることによって、巻上機全体を薄くしている。回転体２１９は基体２０２の底面２０４と反対側の外周面に駆動綱車２２０を一体で構成しており、主軸２１７のフランジ部２１７ａの外側に嵌合結合されている。すなわち、基体２０２から片持ち形成された軸受支持部２０５と、この中に装着された軸受２４０により支持される駆動綱車２２０と一体化された回転体２１９により構成され、この回転体２１９と基体２０２が接近して取り付けられるので、軸方向に薄形に構成された巻上機が得られる。また、回転体２１９と主軸２１７の締結接合部は、主軸２１７の取付面が回転体２１９と基体２０２の間に入っているため、第２図の左側から回転体２１９を着脱できる構成となり、組み立て時或いは回転体２１９の交換は、締結しているねじを取り外すだけで簡単に行うことができる。回転体２１９の開口縁部側にあって駆動綱車２２０と一体で構成され駆動綱車の外径よりも大きな直径を持つ部分は、基体２０２の開口縁部２０３内に収容されており、大径部分の外周面には回転子２２１が設けられている。この回転子２２１は固定子２１８と対向して配置されている。主軸２１７は、回転体２１９のリブ面２２０ａに近接して平行に配置された基体２０２の底面２０４の中心部に一体構成された軸受支持部２０５で支持されている。軸受支持部２０５の端部には、軸受２４０の外輪の位置を決める軸受ストッパー２０５ａが設けられている。主軸２１７には、軸受２４０の内輪を位置決めする軸受内輪ストッパー２１７ａが設けられている。軸受２４０には、軸受２４０の内輪を主軸２１７へ固定するための軸受用ナット２４１と、軸受２４０の外輪を軸受支持部２０５へ固定するための軸受押さえ２４２とが設けられており、軸受用ナット２４１、軸受押さえ２４２の固定により、主軸２１７と基体２０２との位置関係が設定される。軸受２４０は、内外輪を固定する必要があるが、巻上機の組立時には、主軸２１７及び軸受支持部２０５の内径部の間に軸受２４０を挿入し、軸受２４０の内輪側は軸受用ナット２４１、外輪側は軸受押さえ２４２にて各々固定する。これらの組み立ては、ねじ締めの度に巻上機を反転させることなく両方とも反綱車側から行うことができ、組み立て時間の短縮が可能である。電磁ブレーキ２２２は、左右に配置される電磁石のフィールド２２２ａを一体として構成されている。この電磁ブレーキ２２２は、電磁石用アーマチャ２２２ｂと、このアーマチャ２２２ｂに固定されかつ先端に球面を有するねじ棒２２２ｃと、このねじ棒２２２ｃの球面に球面接触する球面座２２２ｄとを備えている。ブレーキの制動時に回転体２１９の制動面２９１に接触するブレーキシュー２２６は、このブレーキシューに取り付けた板ばね２２２ｅによりねじ棒２２２ｃに接触保持させる構成としている。回転体２１９のブレーキシュー２２６が配置される位置に相当する基体２０２の位置に切欠部２０２ａが設けられ、ブレーキの制動時にブレーキシュー２２６にかかる負荷を保持するストッパの役目を果たす。すなわち、ブレーキシュー２２６がブレーキばね２２５により制動面２９１に押し付けられ、ブレーキトルクを発生する。この時、ブレーキシュー２２６には、制動面２９１の接線方向に力が発生するが、この力は基体２０２の切欠部２０２ａが負担することになる。ブレーキ用電磁石を開放すると、ブレーキばね２２５によりアーマチャ２２２ｂ及びブレーキシュー２２６は基体２０２の切欠部２０２ａをガイドとして直線的に移動する構造は直動式と呼ばれている。この直動式の特徴は、構造が簡単なため、コスト的にも、信頼性にも優れている。また、左右のブレーキの一方のみ動作した場合でも、回転方向によりブレーキトルク値が変わらないという利点がある。軸受支持部２０５と主軸２１７との間にはオイルシール２４３が設けられ、軸受２４０に補給された油がブレーキの制動面２１９へ進入するのを防止している。駆動綱車２２０には主索２１２が巻き掛けられ、図示は省略してあるが、その両端にかごと、釣合いおもりがそれぞれ連結されている。
上記のように構成されたエレベーター用薄形巻上機は、負荷の大きい駆動綱車２２０に近接して軸受支持部２０５と、この軸受支持部を支える基体２０２の底面２０４とを配置することにより、主軸２１７の支持構成を片持ち式にしたにも拘らず、軸受支持部２０５にかかる負荷を少なくしたものである。また、軸受支持部が駆動綱車の内部（内側）に配置されるものである。従って、機能構成は従来の巻上機と同等であり、固定子と回転子とによる電動機によって、かごと、釣合いおもりを懸架する主索２１２が駆動綱車２２０に巻き掛けられた状態で摩擦力によって主索２１２が駆動され、かごと、釣合いおもりを互いに反対方向へ昇降する。また、回転体２１９の開口縁部側の大径部内周面に形成された制動面２９１をブレーキシュー２２６により押圧する左右一対のブレーキの電磁石用フィールド２２２ａを一体構成として基体２０２の底面２０４に固定する構成とし、且つブレーキの制動時にブレーキシュー２２６にかかる負荷を基体２０２の切欠き部２０２ａで保持する構成としたために、部品点数を削減することができる。また、部品点数の削減により製造工数、保守の簡易化が図れ、巻上機の厚みも更に薄く構成することができる。In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings.
FIG. 1 is a front view showing a thin hoisting machine for an elevator according to Embodiment 1 of the present invention, FIG. 2 is a sectional view showing the thin hoisting machine for an elevator according to Embodiment 1 of the present invention, and FIG. The figure is an enlarged sectional view of the bearing portion of FIG.
In the figure, a base body 202 configured to be thin in the axial direction has an opening edge 203 which accommodates a part of a rotating body 219 (described later) and forms an accommodation space for a stator 218 on the outer periphery. It has a bottom surface 204 that is substantially flush with the tip of the edge 203. A bearing support portion 205 of a bearing 240 that rotatably supports the main shaft 217 is provided at the center of the base body 202. That is, the bearing support portion 205 that supports the main shaft 217 is connected to the bottom surface 204 of the base body 202. A stator 218 is provided along with a stator winding on the inner surface of the opening edge 203 on the outer periphery of the base body 202. The hook-shaped rotating body 219 is arranged so that a part thereof fits in the base body 202, thereby thinning the entire hoisting machine. The rotating body 219 has a driving sheave 220 integrally formed on the outer peripheral surface opposite to the bottom surface 204 of the base body 202, and is fitted and coupled to the outside of the flange portion 217a of the main shaft 217. That is, it is composed of a bearing support portion 205 cantilevered from the base body 202 and a rotating body 219 integrated with a driving sheave 220 supported by a bearing 240 mounted therein. Since 202 is closely attached, a hoisting machine having a thin shape in the axial direction is obtained. Further, the fastening joint between the rotating body 219 and the main shaft 217 has a configuration in which the rotating body 219 can be attached and detached from the left side of FIG. 2 because the mounting surface of the main shaft 217 is between the rotating body 219 and the base body 202. The exchange of the rotating body 219 can be easily performed by simply removing the screw that is fastened. A portion that is integrally formed with the driving sheave 220 and has a diameter larger than the outer diameter of the driving sheave on the opening edge side of the rotating body 219 is accommodated in the opening edge 203 of the base body 202, and is large. A rotor 221 is provided on the outer peripheral surface of the diameter portion. The rotor 221 is disposed to face the stator 218. The main shaft 217 is supported by a bearing support portion 205 that is integrally formed with the center portion of the bottom surface 204 of the base body 202 that is disposed in parallel to the rib surface 220a of the rotating body 219. A bearing stopper 205 a that determines the position of the outer ring of the bearing 240 is provided at the end of the bearing support portion 205. The main shaft 217 is provided with a bearing inner ring stopper 217 a for positioning the inner ring of the bearing 240. The bearing 240 is provided with a bearing nut 241 for fixing the inner ring of the bearing 240 to the main shaft 217 and a bearing holder 242 for fixing the outer ring of the bearing 240 to the bearing support portion 205. The positional relationship between the main shaft 217 and the base body 202 is set by fixing the bearing holder 242 and the bearing holder 241. The bearing 240 needs to fix the inner and outer rings, but when assembling the hoisting machine, the bearing 240 is inserted between the main shaft 217 and the inner diameter portion of the bearing support portion 205, and the bearing 240 has an inner ring side on the bearing nut 241. The outer ring side is fixed by bearing holders 242. Both of these assemblies can be performed from the side opposite the sheave without inverting the hoisting machine each time the screw is tightened, and the assembly time can be shortened. The electromagnetic brake 222 is configured integrally with electromagnet fields 222a arranged on the left and right. The electromagnetic brake 222 includes an electromagnet armature 222b, a screw rod 222c fixed to the armature 222b and having a spherical surface at the tip, and a spherical seat 222d that makes spherical contact with the spherical surface of the screw rod 222c. The brake shoe 226 that contacts the braking surface 291 of the rotating body 219 during braking of the brake is configured to be held in contact with the screw rod 222c by a leaf spring 222e attached to the brake shoe. A notch 202a is provided at a position of the base body 202 corresponding to a position where the brake shoe 226 of the rotator 219 is disposed, and serves as a stopper for holding a load applied to the brake shoe 226 during braking of the brake. That is, the brake shoe 226 is pressed against the braking surface 291 by the brake spring 225 to generate brake torque. At this time, a force is generated on the brake shoe 226 in the tangential direction of the braking surface 291, and this force is borne by the notch 202 a of the base body 202. When the brake electromagnet is released, the structure in which the armature 222b and the brake shoe 226 move linearly with the notch 202a of the base body 202 as a guide by the brake spring 225 is called a direct acting type. This direct acting type feature is simple in structure, and is excellent in cost and reliability. Further, even when only one of the left and right brakes is operated, there is an advantage that the brake torque value does not change depending on the rotation direction. An oil seal 243 is provided between the bearing support portion 205 and the main shaft 217 to prevent oil supplied to the bearing 240 from entering the braking surface 219 of the brake. A main rope 212 is wound around the driving sheave 220, and although not shown, a cage and a counterweight are connected to both ends thereof.
In the elevator thin hoist configured as described above, the bearing support portion 205 and the bottom surface 204 of the base body 202 that supports the bearing support portion are disposed in the vicinity of the drive sheave 220 having a large load. Although the support structure of the main shaft 217 is cantilevered, the load applied to the bearing support portion 205 is reduced. The bearing support portion is disposed inside (inside) the drive sheave. Accordingly, the functional configuration is the same as that of the conventional hoisting machine, and the frictional force is generated in a state where the main rope 212 for suspending the car and the counterweight is wound around the driving sheave 220 by the electric motor including the stator and the rotor. , The main rope 212 is driven, and the car and the counterweight are raised and lowered in opposite directions. Further, a pair of left and right brake electromagnet fields 222 a that press the braking surface 291 formed on the inner peripheral surface of the large diameter portion on the opening edge side of the rotating body 219 by the brake shoe 226 are fixed to the bottom surface 204 of the base body 202. In addition, since the load applied to the brake shoe 226 is held by the notch 202a of the base body 202 during braking of the brake, the number of parts can be reduced. In addition, the number of parts can be reduced to simplify manufacturing steps and maintenance, and the hoisting machine can be made thinner.

以上のように、この発明にかかるエレベータ用薄形巻上機は、巻上機を構成する部品点数を削減することができ、コスト低減が可能となる。また、合わせて薄型化、軽量化が図れるので、設置場所の自由度を拡大することができ、更には昇降路平面スペースの縮小が可能となる。  As described above, the elevator thin hoist according to the present invention can reduce the number of parts constituting the hoist and can reduce the cost. In addition, since the thickness and weight can be reduced, the degree of freedom of the installation location can be increased, and the hoistway plane space can be reduced.

Claims (7)

基体と、この基体の中心部に回転支持される主軸と、この主軸に支持されて回転する回転体と、この回転体に形成された駆動綱車と、上記基体に設けられた固定子と、上記回転体の外周に上記固定子と対向して配置され上記固定子とによって電動機を構成する回転子と、上記駆動綱車の外径よりも大きい直径の上記回転体に形成された制動面と、この制動面に対向して配置され、制動面に押圧されて制動動作するブレーキとを備えたエレベータ用巻上機において、上記基体は、外周に上記回転体の一部を収容するとともに上記固定子の収容空間を形成した開口縁部を有し、この開口縁部の先端とほぼ同一面となる底面を有し、底面の中心部には上記主軸を回転支持する軸受の軸受支持部が設けられ、上記回転体は、上記基体の外周の開口縁部内面にその一部が嵌り込むように収容配置され、上記固定子は、上記基体の外周の開口縁部内面に設けられ、上記回転子は、上記回転体の開口縁部側にあって上記駆動綱車の外径よりも大きな直径を持つ大径部分の外周面に配置され、上記制動面は、上記回転体の上記駆動綱車の外径よりも大きな直径を持つ大径部分の内周面に形成され、上記ブレーキは、上記制動面に対向して上記基体の底面部に配置固定され、上記回転体の主軸を支持する軸受支持部と接続した基体底面と駆動綱車を近接して配置し、上記回転体の主軸を基体の軸受支持部で片持ち支持する構成としたことを特徴とするエレベータ用薄形巻上機。A substrate and a main shaft is rotatably supported in the center of the base body, a rotating body that rotates being supported lifting this spindle, and this rotary member formed on the driving sheave, a stator provided on the base A rotor that is arranged on the outer periphery of the rotating body so as to be opposed to the stator and that constitutes an electric motor with the stator, and a braking surface formed on the rotating body having a diameter larger than the outer diameter of the drive sheave And an elevator hoisting machine disposed opposite to the braking surface and pressed by the braking surface to perform a braking operation, wherein the base body accommodates a part of the rotating body on the outer periphery and It has an opening edge part that forms an accommodation space for the stator, has a bottom surface that is substantially flush with the tip of the opening edge part, and a bearing support part of a bearing that rotatably supports the main shaft at the center part of the bottom surface. The rotating body is provided with an opening edge on the outer periphery of the base body. The stator is provided on the inner surface of the opening edge of the outer periphery of the base, and the rotor is on the opening edge side of the rotating body and is driven. An outer peripheral surface of a large-diameter portion having a diameter larger than the outer diameter of the sheave, and the braking surface is an inner peripheral surface of a large-diameter portion having a diameter larger than the outer diameter of the driving sheave of the rotating body The brake is disposed and fixed on the bottom surface of the base so as to face the braking surface, and the base bottom connected to the bearing support that supports the main shaft of the rotating body and the driving sheave are disposed close to each other. A thin hoisting machine for an elevator, wherein the main shaft of the rotating body is cantilevered by a bearing support portion of a base. 主軸を支える軸受を、基体の軸受支持部の端面及び主軸にそれぞれ設けた軸受位置決めストッパで位置決めし、軸受の反対向側には軸受用ナット及び軸受押さえを配置し、基体側より軸受を組み立て可能としたことを特徴とする請求項１記載のエレベータ用薄形巻上機。  The bearing that supports the main shaft is positioned by the bearing positioning stoppers provided on the end surface of the bearing support portion of the base and the main shaft, respectively. The thin hoisting machine for elevators according to claim 1, wherein 基体内部にブレーキを収納し、基体の軸受支持部にブレーキ用電磁石を固定し、基体の回転体の内周部に沿ってブレーキシューを格納する切欠部を設けて、ブレーキ制動時にブレーキシューのストッパとすることを特徴とする請求項２記載のエレベータ用薄形巻上機。The brake is housed inside the base, the brake electromagnet is fixed to the bearing support part of the base, and a notch for storing the brake shoe is provided along the inner periphery of the base rotating body. The thin hoisting machine for an elevator according to claim 2, wherein: 左右のブレーキ用電磁石のフィールドを一体構成としたことを特徴とする請求項３記載のエレベータ用薄形巻上機。4. The elevator hoisting machine according to claim 3 , wherein the fields of the left and right brake electromagnets are integrated. 左右のブレーキの構造を直動式としたことを特徴とする請求項４記載のエレベータ用薄形巻上機。5. A thin hoisting machine for an elevator according to claim 4 , wherein the structure of the left and right brakes is a direct acting type. 回転体の主軸との接合部を、主軸のフランジ部の外側へ配置したことを特徴とする請求項１〜請求項４のいずれかに記載のエレベータ用薄形巻上機。The thin hoisting machine for an elevator according to any one of claims 1 to 4 , wherein a joint portion with the main shaft of the rotating body is disposed outside the flange portion of the main shaft. 基体の軸受支持部外周と主軸の一部との間に、ブレーキ制動面に油が進入するのを防止するオイルシールを設けたことを特徴とする請求項６記載のエレベータ用薄形巻上機。7. A thin hoisting machine for an elevator according to claim 6, wherein an oil seal for preventing oil from entering the brake braking surface is provided between the outer periphery of the bearing support portion of the base and a part of the main shaft. .
JP2005508184A 2003-08-21 2003-08-21 Thin hoisting machine for elevator Expired - Fee Related JP4439470B2 (en)

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