Elevator drive machinery disposed in the counterweight

Details Elevator drive machinery disposed in the counterweight Elevator drive machinery disposed in the counterweight

Category

B - Operations, Transporting

Subcategory

66

Subsubcategory

B

IPC codes

B66B 7/00 (2006.01) B66B 11/04 (2006.01) B66B 11/08 (2006.01) B66B 17/12 (2006.01)

Type

Patent

Patent number

CA 2126491

Description

A rotating elevator motor provided with a traction sheave is placed in the counterweight of an elevator suspended with ropes, so that the motor structure shares part of the counterweight structure, thereby economizing on space. The sector-shaped stator of the motor has a diameter (2*Rs) larger than that (2*Rv) of the traction sheave and the elevator ropes are passed through the open part or parts of the stator. This structure allows the use of traction sheaves of different diameters with rotors of the same diameter. Still, the length of the motor remains small and the motor/counterweight of the invention can be accommodated in the space normally reserved for a counterweight in an elevator shaft. The motor shaft is placed in the counterweight substantially midway between the guide rails and the same number of ropes are placed on both sides of the rotor.

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