To realize a double braking of a motor efficiently while suppressing increase in scale of a machine-room-less elevator hoisting machine which includes an electric motor incorporated with a brake device.SOLUTION: In an elevator hoisting machine, a reduction gear includes a gear mechanism including two-stage gear trains of a worm gear stage and a helical gear stage inside a gear box. A cylindrical worm serving as an input shaft of the worm gear stage includes an extended rotation shaft extending on the same shaft from both sides in the longitudinal direction and protruding outward from the gear box. A first motor built in a brake device whose output shaft is connected to one end part of the extended rotation shaft is included as a sheave rotation driving electric motor. A second motor built in the brake device whose output shaft is connected to the other end part of the extended rotation shaft is included as a power generator which is driven by following the rotation drive of the first motor through the cylindrical worm and the extended rotation shaft. The brake device of the first motor and the brake device of the second motor constitute a double braking mechanism with respect to the first motor.SELECTED DRAWING: Figure 1

    【課題】ブレーキ装置が組み込まれた電動モータを備えたマシンルームレス用のエレベータ巻上機として、大型化を抑えながら効率的にモータのダブルブレーキ化を実現する。【解決手段】エレベータ巻上機において、減速機が歯車箱内にウォームギア段とヘリカルギア段との2段歯車列からなる歯車機構を備え、ウォームギア段の入力軸としての円筒状ウォームが、その長手方向両側から同軸上に延在して歯車箱の外方へ突出する延長回転軸を備え、延長回転軸の一方の端部に出力軸が連結されたブレーキ装置内蔵の第1のモータをシーブ回転駆動用電動モータとして備え、延長回転軸の他方の端部に出力軸が連結されたブレーキ装置内蔵の第2のモータを、円筒状ウォーム及び延長回転軸を介して第1のモータの回転駆動に追従駆動する発電機として備え、第1のモータのブレーキ装置と第2のモータのブレーキ装置とで第1のモータに対するダブルブレーキ機構を構成する。【選択図】 図1


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    Title :

    ELEVATOR HOISTING MACHINE


    Additional title:

    エレベータ巻上機


    Contributors:

    Publication date :

    2022-12-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES



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