Elevator hoist apparatus
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorHiroyasu Ito
Life of this patent
Estimating the term…
Abstract
A hoist apparatus comprising a stationary shaft supported by a support, and a sheave having a cavity with a side opening detachably, and rotatably, mounted on the shaft. A motor stator assembly is mounted on the support member and extends into the inner space through the side opening, and a motor rotor assembly is disposed within the inner space in an electromagnetically inductive relationship with the motor stator assembly. The motor rotor assembly is detachably connected to the sheave by a connecting assembly including a bolt fastening the motor rotor assembly to the sheave.
Claims17
A hoist apparatus comprising:
- a shaft;
- a support member for supporting said shaft;
- a sheave detachably and rotatably mounted on said shaft, said sheave having walls including one disc side wall defining an inner space with a side opening opposite said side wall;
- a motor stator mounted to said support member via a support structure which extends into the inner space of said sheave through the side opening and carries said motor stator inside said sheave;
- a motor rotor core disposed with the inner space in an electromagnetically inductive relationship with said motor stator;
- and
- means for detachably mounting said motor rotor core to said disc side wall of said sheave and inside said sheave spaced by an air gap from said motor stator.
A hoist apparatus as claimed in 1, wherein said mounting means comprises a bolt fastening said motor rotor assembly directly to said disc side wall of said sheave.
An elevator hoist apparatus comprising:
- a shaft;
- a support member for supporting said shaft;
- a sheave detachably and rotatably mounted on said shaft for use with an elevator hoist rope, said sheave having therein an inner space with a side opening;
- said sheave having walls including one disc side wall defining an inner space of said sheave, said sheave having a side opening opposite said one side wall and facing said support member;
- a motor stator mounted to said support member via a support structure which extends into the inner space of said sheave through the side opening, said stator assembly being disposed inside said sheave;
- a motor rotor core disposed within the inner space in an electromagnetically inductive relationship with said motor stator;
- and
- mounting means for detachably mounting said motor rotor core to said sheave disc side wall and inside said sheave spaced by an air gap from said motor stator.
A hoist apparatus comprising:
- a shaft
- a support member for supporting said shaft;
- a sheave detachably and rotatably mounted on said shaft, said sheave having an inside inner space with a side opening;
- a sheave disc side wall and a sheave outer cylindrical wall providing outer surfaces of the inner space of said sheave;
- a motor stator mounted to said support member via a support structure which extends into the said inner space through the side opening;
- a motor rotor core disposed within the inner space of said sheave in an electromagnetically inductive relationship with said motor stator;
- a frame structure which is located radially inward of said rotor core and mounts said motor rotor core to said sheave;
- mounting means for detachably mounting said frame structure and motor rotor core to said disc side wall of said sheave.
Dependencies are inferred from the claim text.