| 摘要 |
PROBLEM TO BE SOLVED: To provide a hoisting machine device for an elevator capable of accomplishing enhancement of cooling effect. SOLUTION: In the hoisting machine device for the elevator, a sheave 2 and a brake drum 3 are fitted to a rotation shaft 1a of the hoisting machine 1 and provided at both outer positions of the hoisting machine 1, and the sheave 2 and the brake drum 3 are made into a fin shape in which an arm radially laid from a boss part to a rim part is inclined relative to a rotation axis and performs air-blowing action. The hoisting machine 1 is made of a permanent magnet type electric motor having a rotor comprising a permanent magnet and a stator opposed to the rotor, and is provided with a hood 4 covering the hoisting machine 1 through a predetermined clearance and having both ends opened toward the sheave 2 and the brake drum 3. The blown air generated according to rotation of the sheave 2 and the brake drum 3 is guided by the hood 4 and the blown air is fed to the clearance between the hoisting machine 1 and the hood 4. Thereby, the blown air is prevented from being diffused, the flowing speed of the blown air is enhanced, and enhancement of cooling effect is accomplished. COPYRIGHT: (C)2008,JPO&INPIT
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