Elevator hoisting machine and motor
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorNaoki Hashiguchi
Life of this patent
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Abstract
A elevator hoisting machine is provided with a stator mounting portion at which a stator core of a motor is mounted to a surface of a side opposite to a sheave in a sheave rotation centerline direction of the hoisting machine. A hat shape fixed frame member in which the stator mounting portion and a fixed main shaft that supports rotation of a rotor through a bearing are integrated. The elevator hoisting machine is characterized in that a brake device in which an inner radial surface of a cylindrical rotor mounting portion forms a braking surface. A motor is characterized in that the width of a magnet constituting a rotor is larger than the width of the stator core. The elevator hoisting machine is provided with the motor.
Claims13
An elevator-hoisting machine comprising:
- a sheave;
- a fixed main shaft that supports rotation of the sheave through a bearing;
- a rotation support frame comprising a rotor mounting portion formed integrally with the sheave or fixed to the sheave;
- a fixed frame body comprising a hollow extended portion, a cylindrical portion and a stator mounting portion, the extended portion having a disc-like shape and being extended outwardly in a radial direction of the sheave, the cylindrical portion being bent approximately in a vertical direction from the extended portion and being extended toward the fixed main shaft, the stator mounting portion being provided at the cylindrical portion to oppose the rotor mounting portion;
- and
- a motor including a rotor mounted to the rotor mounting portion, and a stator mounted to the stator mounting portion, wherein
- a portion of the rotation support frame, which is located between the rotor mounting portion of the rotation support frame and the sheave, is extended outwardly in a radial direction of the sheave and has a hollow-disc-like shape, and
- a diameter of the rotor mounting portion in the radial direction is substantially larger than a diameter of the sheave in the radial direction.
Dependencies are inferred from the claim text.