Hoisting machine for elevator and fastening method of sheave of hoisting machine of elevator

摘要

A hoisting machine (1) for an elevator comprises a stator (2), a rotor (3) provided so as to be opposed to the stator (2), and a ring shaped A male screw portion (41) is provided on a supporting outer peripheral surface (3a) of the rotor (3), and on the inner side surface of the sheave (4), a female screw portion By tightening the female screw portion (51) of the sheave (4) to the external thread portion (41) of the rotor (3), the sheave (4) supports the rotor (3) Is fixed on the outer side in the radial direction of the outer peripheral surface (3a).