JP3599616B2 - Electric motor for hoist - Google Patents

Electric motor for hoist Download PDF

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Publication number
JP3599616B2
JP3599616B2 JP29339099A JP29339099A JP3599616B2 JP 3599616 B2 JP3599616 B2 JP 3599616B2 JP 29339099 A JP29339099 A JP 29339099A JP 29339099 A JP29339099 A JP 29339099A JP 3599616 B2 JP3599616 B2 JP 3599616B2
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JP
Japan
Prior art keywords
motor
electric motor
hoist
motor frame
output shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP29339099A
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Japanese (ja)
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JP2001114486A (en
Inventor
豪 中島
昇 荒堀
洋海 伊豫田
通利 島田
昌也 古橋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Hitachi Mito Engineering Co Ltd
Original Assignee
Hitachi Ltd
Hitachi Mito Engineering Co Ltd
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  • Cage And Drive Apparatuses For Elevators (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は昇降機の巻上機用電動機に係わり、特に電動機を昇降路内に設置する場合の環境に適した電動機の構造に関する。
【0002】
【従来の技術】
従来の昇降機に使用されている巻上機用電動機は主に減速機付き誘導機であり、本発明の永久磁石式同期電動機とは原理及び構造が異なる。
【0003】
また、誘導機で同等の容量を得ようとすると非常に大きな昇降機用巻上機となる。
【0004】
【発明が解決しようとする課題】
近年日照権問題等により機械室レス化の昇降機の要求が高まり、従来機械室に設置されていた巻上機用電動機は昇降路内に設置されるようになってきた。
【0005】
昇降路内では、減速機付き電動機では設置面積と騒音が問題となる。
【0006】
また、昇降路ピット内に電動機を設置した場合冠水対策を講じなければならない。
【0007】
【課題を解決するための手段】
昇降路内設置用電動機とするため、希土類磁石を回転子に使用した同期電動機の採用により低速高トルクが可能となり減速機が不要となる。
【0008】
また、これに伴い電動機の出力軸側に綱車,反出力軸側に電磁ディスクブレーキと単純な形状で小さくまとめられ昇降路内に十分設置可能となる。
【0009】
昇降機に使用される巻上機を希土類磁石式同期電動機としたことにより、減速機不付でコンパクトな、かつ静音な巻上機用電動機が得られる。
【0010】
【発明の実施の形態】
本発明の一実施例を図1を用いて説明する。
【0011】
図1は、本発明の一実施例を示す希土類磁石式同期電動機の外形図である。
【0012】
本電動機1は、ねずみ鋳鉄製の電動機フレームからなり、電動機出力軸には綱車2及び反出力軸には、電磁作用によるディスクブレーキ3と回転検出センサ4が設置固定されている。
【0013】
電動機1,綱車2及びブレーキ3の外径はほぼφ400(φ380〜φ420)で単純にコンパクトにまとめられており、限られた昇降路内スペースに設置有効である。
【0014】
次に、図2に前記同期電動機の断面図を示す。
【0015】
回転軸22に締結された回転子鉄心21及び前記鉄心の内部または表面に固定された希土類磁石により回転子が構成されている。
【0016】
前記回転子に相対して固定子鉄心16が電動機フレーム18内側に設定されており、前記固定子鉄心のスロット内に固定子巻線17が形成されて固定子を構成している。
【0017】
前記回転軸は両側に各々軸受6と、8で支持されており、さらに各軸受はねずみ鋳鉄からなるエンドブラケット7と、10により保持されている。
【0018】
またねずみ鋳鉄からなる電動機フレーム18は、その外周に放熱効果のあるフィン24を形成する。
【0019】
今、前記電動機フレーム18とエンドブラケット7及び10は互いに嵌合しており、その嵌合面においてシール剤によって充填されている。
【0020】
また、回転軸においては両軸受6と8の外側にオイルシール5と9によってグリースが封入されており固定側及び回転側とも完全密閉の構造となっている。
【0021】
前記密閉構造により、JIS C4004による保護形式のJP57相当を、満足するようになっている。
【0022】
本電動機の浸水試験により72時間では異常を確認していない。
【0023】
また、このほか前記電動機フレーム18下部は電動機固定台23を形成し、前記フレーム18上部は端子箱9を形成する。
【0024】
前記電動機フレーム18の上部及び下部をその材料であるねずみ鋳鉄で一体構造としたことにより、部品点数の増加を塞ぐことができる。
【0025】
以上により巻上機用希土類磁石式同期電動機1が構成される。
【0026】
さて、前記電動機1において出力軸に綱車2及び反出力軸に電磁作用のディスクブレーキ3と回転検出器4が結合されている。
【0027】
この綱車2,電動機フレーム18及びディスクブレーキの外径はほぼφ400で、構成される。
【0028】
これにより、本電動機による巻上機の仕様を下表にまとめる。
【0029】
【表1】

Figure 0003599616
【0030】
【発明の効果】
巻上機用電動機に希土類磁石式同期電動機を採用したことにより、減速機が不要となり、電動機の出力軸側に綱車,反出力軸側に電磁作用のディスクブレーキで構成されシンプルかつコンパクトになった。
【0031】
さらに減速機不付きのためギアのかみ合い音がなく、静音となり昇降路内に設置可能である。
【0032】
これにより、ビルディング最上階の機械室が不要となり、日照権問題が解決され、かつビルディングの外観が美しくなるまたは機械室の有効利用等のメリットが出てくる。
【図面の簡単な説明】
【図1】本発明の一実施例を示す巻上機用希土類磁石式同期電動機の外形図を示す。
【図2】前記同期電動機の断面図を示す。
【符号の説明】
1…希土類磁石式同期電動機、2…綱車、3…電磁作用式ディスクブレーキ、4…回転検出センサ、5…オイルシール、6,8…軸受、7,10…エンドブラケット、9…端子箱、11…電磁作用コイル、12…電磁作用アマチャ、13…ディスク、14…ライニング、15…ブレーキ固定板、16…固定子鉄心、17…エンドコイル、18…電動機フレーム、19…端子箱蓋、20…口出し線、
21…回転子鉄心、22…回転軸、23…電動機固定台、24…放熱用フィン。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motor for a hoist of a hoist, and more particularly to a structure of a motor suitable for an environment when the motor is installed in a hoistway.
[0002]
[Prior art]
A motor for a hoist used in a conventional elevator is mainly an induction machine with a speed reducer, and has a different principle and structure from the permanent magnet synchronous motor of the present invention.
[0003]
Further, if an attempt is made to obtain the same capacity with an induction machine, a very large hoist for a lift will be required.
[0004]
[Problems to be solved by the invention]
In recent years, there has been an increasing demand for elevators that do not require a machine room due to the sunshine problem, etc., and motors for hoisting machines that have conventionally been installed in machine rooms have been installed in hoistways.
[0005]
In the hoistway, the installation area and noise pose a problem with the motor with the reduction gear.
[0006]
If an electric motor is installed in the hoistway pit, countermeasures against flooding must be taken.
[0007]
[Means for Solving the Problems]
Since the motor is installed in the hoistway, a synchronous motor using a rare-earth magnet as a rotor can be used to achieve low-speed and high-torque, eliminating the need for a speed reducer.
[0008]
Accordingly, the sheave on the output shaft side of the electric motor and the electromagnetic disc brake on the opposite side of the output shaft are compactly arranged in a simple shape and can be sufficiently installed in the hoistway.
[0009]
Since the hoist used for the elevator is a rare earth magnet type synchronous motor, a compact and silent motor for a hoist without a reduction gear can be obtained.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
One embodiment of the present invention will be described with reference to FIG.
[0011]
FIG. 1 is an outline drawing of a rare earth magnet type synchronous motor showing one embodiment of the present invention.
[0012]
The electric motor 1 is made of a gray cast iron electric motor frame. A sheave 2 is mounted on an output shaft of the electric motor, and a disk brake 3 and a rotation detection sensor 4 are fixedly mounted on an opposite output shaft.
[0013]
The outer diameters of the electric motor 1, the sheave 2 and the brake 3 are approximately φ400 (φ380 to φ420), which are simply compacted, and are effective for installation in a limited space in a hoistway.
[0014]
Next, FIG. 2 shows a sectional view of the synchronous motor.
[0015]
The rotor is constituted by a rotor core 21 fastened to the rotating shaft 22 and a rare earth magnet fixed inside or on the surface of the core.
[0016]
A stator core 16 is set inside the motor frame 18 so as to face the rotor, and a stator winding 17 is formed in a slot of the stator core to constitute a stator.
[0017]
The rotating shaft is supported on both sides by bearings 6 and 8, respectively, and each bearing is held by end brackets 7 and 10 made of gray cast iron.
[0018]
The motor frame 18 made of gray cast iron has fins 24 having a heat radiation effect on the outer periphery.
[0019]
Now, the motor frame 18 and the end brackets 7 and 10 are fitted to each other, and the fitting surfaces are filled with a sealant.
[0020]
In the rotating shaft, grease is sealed outside the bearings 6 and 8 by oil seals 5 and 9, so that both the fixed side and the rotating side have a completely sealed structure.
[0021]
By the above-mentioned closed structure, the protection type equivalent to JP57 according to JIS C4004 is satisfied.
[0022]
No abnormality was confirmed in 72 hours by the water immersion test of this motor.
[0023]
In addition, the lower part of the motor frame 18 forms a motor fixing base 23, and the upper part of the frame 18 forms a terminal box 9.
[0024]
Since the upper and lower portions of the motor frame 18 are made of gray cast iron as an integral structure, an increase in the number of parts can be closed.
[0025]
Thus, the rare-earth magnet synchronous motor 1 for the hoist is configured.
[0026]
Now, in the electric motor 1, the sheave 2 is connected to the output shaft, and the disc brake 3 and the rotation detector 4 of electromagnetic action are connected to the non-output shaft.
[0027]
The outer diameters of the sheave 2, the motor frame 18 and the disc brake are approximately φ400.
[0028]
The specifications of the hoist using this motor are summarized in the table below.
[0029]
[Table 1]
Figure 0003599616
[0030]
【The invention's effect】
The adoption of a rare earth magnet synchronous motor for the motor for the hoist eliminates the need for a speed reducer. The motor is composed of a sheave on the output shaft side and a disk brake on the opposite output shaft side with electromagnetic action, making it simple and compact. Was.
[0031]
Furthermore, since there is no speed reducer, there is no gear meshing noise, and the sound is quiet, and can be installed in the hoistway.
[0032]
This eliminates the need for the machine room on the top floor of the building, solves the problem of sunshine, and brings about advantages such as a beautiful appearance of the building or effective use of the machine room.
[Brief description of the drawings]
FIG. 1 is an external view of a rare earth magnet type synchronous motor for a hoist showing one embodiment of the present invention.
FIG. 2 is a sectional view of the synchronous motor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Rare-earth magnet synchronous motor, 2 ... sheave, 3 ... electromagnetic disc brake, 4 ... rotation detection sensor, 5 ... oil seal, 6, 8 ... bearing, 7, 10 ... end bracket, 9 ... terminal box, DESCRIPTION OF SYMBOLS 11 ... Electromagnetic action coil, 12 ... Electromagnetic action armature, 13 ... Disk, 14 ... Lining, 15 ... Brake fixing plate, 16 ... Stator core, 17 ... End coil, 18 ... Motor frame, 19 ... Terminal box cover, 20 ... Lead wire,
Reference numeral 21 denotes a rotor core, 22 denotes a rotating shaft, 23 denotes an electric motor fixing stand, and 24 denotes a radiating fin.

Claims (3)

昇降機に使用される巻上機用電動機であって回転軸に締結され、極数に応じた希土類永久磁石からなる回転子と、前記回転子に相対応して電動機フレームの内側に設定された固定子とで構成され、前記回転軸は両側に各々軸受で支持され、前記各軸受はエンドブラケットにより保持され、前記エンドブラケットは前記電動機フレームと互いに嵌合し、前記回転軸の前記両側において、前記電動機の出力軸側には綱車が結合されており、また反出力軸側には電磁作用のディスクブレーキと回転検出器が結合されており、前記綱車の外径と電動機の外径と電磁作用のディスクブレーキの外径が、ほぼφ400であることを特徴とする巻上機用電動機。A motor for a hoist used for an elevator , which is fastened to a rotating shaft, a rotor made of a rare earth permanent magnet according to the number of poles, and is set inside the motor frame corresponding to the rotor . The rotating shaft is supported by bearings on both sides, the bearings are held by end brackets, and the end brackets are fitted with the motor frame, and on both sides of the rotating shaft, A sheave is coupled to the output shaft side of the electric motor, and a disc brake and a rotation detector of electromagnetic action are coupled to the counter-output shaft side, and the outer diameter of the sheave and the outer diameter of the electric motor are An electric motor for a hoist, wherein an outer diameter of an electromagnetically actuated disc brake is approximately φ400. 前記電動機において前記電動機フレームは、ねずみ鋳鉄からなり、前記電動機フレーム外周には放熱用フィン、及び前記電動機フレーム下部には電動機固定台、さらに前記電動機フレーム上部には端子箱が前記電動機フレームに一体形成されていることを特徴とする請求項1項記載の巻上機用電動機。 Said motor frame in said electric motor is made of gray cast iron, formed integrally with the motor frame radiation fins on the outer, and the motor fixing table to the lower the motor frame, further wherein the motor frame upper terminal box said motor frame The electric motor for a hoist according to claim 1, wherein the electric motor is provided. 前記電動機において出力軸側及び反出力軸側の両軸受外側にオイルシールを設け、また前記各軸受を支持するねずみ鋳鉄からなるエンドブラケットと前記電動機フレームの嵌め合い面に密閉剤を封入したことを特徴とする請求項1項記載の巻上機用電動機。In the motor, an oil seal is provided outside both bearings on the output shaft side and the counter-output shaft side, and a sealant is sealed in a fitting surface of the end bracket made of gray cast iron supporting the bearings and the motor frame. The electric motor for a hoist according to claim 1, wherein
JP29339099A 1999-10-15 1999-10-15 Electric motor for hoist Expired - Fee Related JP3599616B2 (en)

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2894403A1 (en) * 2005-12-02 2007-06-08 Leroy Somer Moteurs ROTATING ELECTRICAL MACHINE WITH REDUCED TORQUE CORDS
JP4993978B2 (en) * 2006-09-13 2012-08-08 株式会社日立製作所 Elevator hoisting machine
JP5263865B2 (en) * 2007-09-12 2013-08-14 東芝産業機器製造株式会社 Electric motor for hoisting machine
CN103956853A (en) * 2014-05-20 2014-07-30 南车株洲电机有限公司 High-power compressor system and application system thereof
CN117674512B (en) * 2024-02-03 2024-05-17 浙江弗尔德驱动科技有限公司 New energy driving permanent magnet motor

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