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US 5,844,334 AGranted
Traction machine motor with improved cooling
AssigneeOtis Elevator Company
InventorsKazuhisa Sasaki, Keiichi Kohroki
Life of this patent
Estimating the term…
Abstract
On a traction machine motor wherein both a rotor (6) and a driving sheave (10) are attached on the rotating shaft (5), which is supported by both a motor bracket (1) and a bearing stand (2), and a motor frame (7) which supports the stator (8) is connected to the motor bracket (1), a gap (G.sub.5) is provided between a spigot joint (18) which is concentric with the rotating shaft (5) and an arcuate part (19) to indirectly measure a bias in the circumferential direction of the gap (G.sub.4).
Claims3
A traction machine motor comprising:
- a rotating shaft having a first end and a second end, said rotating shaft rotating about a rotational axis;
- a bracket for supporting the first end of said rotating shaft;
- a bearing stand for supporting the second end of said rotating shaft, said bearing stand having a first end;
- a rotor disposed on said rotating shaft;
- a frame surrounding said rotor, said frame having a first arcuate section formed therein;
- a stator disposed inside said frame;
- a drive sheave disposed between said rotor and said bearing stand, said drive sheave having a second arcuate section formed therein opposite the first arcuate section of said frame;
- and
- a cooling device for cooling said traction machine motor, said cooling device having an intake opening and an exhaust opening both of which being directed perpendicular to the rotational axis of said rotating shaft and directing cooling air flow solely perpendicular to the rotational axis of said shaft.
6 more elements
Dependencies are inferred from the claim text.