Elevator machinery
AssigneeKone Corporation
InventorsEsko Aulanko, Harri Hakala
Life of this patent
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Abstract
The elevator machinery (26) comprises a motor (6) and its traction sheave (18). The rotor (17) is disc-shaped and air gap (ag) between it and the stator (14) can turn a plane which is substantially perpendicular to the shaft (13). The stator (14) forms a ringlike sector (28) and is placed in an outer part and the traction sheave (18) is fixed to the rotor, between the stator (14) and the shaft (13). The diameter of the traction sheave is smaller than that of the rotor. The structure of the motor allows the use of traction sheaves (18) of different diameters (2*Rv) with rotors (17) of the same diameter. The motor is very flat. In i.e. other words its length the axial direction is small.
Claims25
Elevator machinery comprising:
- a motor provided with a frame plate, at least one bearing, a shaft, at least one stator with a winding and a rotating disc-shaped rotor with an air gap therebetween, the stator forming a non-continuous semicircular sector, the rotor and stator both having a diameter and the air gap being the only air gap provided in the motor;
- and
- at least one traction sheave for moving elevator ropes, the at least one traction sheave being provided with rope grooves for receiving the elevator ropes, the at least one traction sheave being joined with the rotor and having a diameter that is smaller than the diameter of the rotor and smaller than the diameter of the stator, the rotor being generally aligned with a center of the sheave.
Elevator machinery comprising:
- a motor provided with a frame plate, at least one bearing, a shaft, at least one stator with a winding and a rotating disc-shaped rotor with an air gap therebetween, the stator forming a non-continuous semicircular sector, the stator being provided on one side of the motor and the rotor being provided on another side of the motor such that only one air gap is provided in the motor, the rotor and stator both having a diameter;
- and
- at least one traction sheave for moving elevator ropes, the at least one traction sheave being provided with rope grooves, the at least one traction sheave being joined with the rotor and having a diameter that is smaller than the diameter of the rotor and smaller than the diameter of the stator.
Elevator machinery comprising:
- a motor provided with a frame plate, at least one bearing, a shaft, at least one stator with a winding and a rotating disc-shaped rotor with an air gap therebetween, the air gap being formed by faces of the stator and rotor which are at least in part non-perpendicular to the shaft such that at least a portion of the air gap is inclined with respect to the shaft and such that only one air gap is provided in the motor, the stator forming a non-continuous semicircular sector;
- and
- at least one traction sheave for moving elevator ropes, the at least one traction sheave being provided with rope grooves, the at least one traction sheave being joined with the rotor and having a diameter that is smaller than the diameter of the rotor.
Dependencies are inferred from the claim text.