Elevator drive machine placed in the counterweight

US5566785A · kind A · utility

Assignee

• Kone Oy · FI

Inventor

• Harri Hakala · Hyvinkää, FI

Key dates

• Filing date: Jun 28, 1994
• Grant date: Oct 22, 1996
• Expiry date: Jun 28, 2014

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B17/12
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

An elevator suspended by ropes is provided with a rotating elevator motor placed in a counterweight of the elevator. The motor has a traction sheave. A gear system is not necessarily needed, because the structure and placement of the motor allow the use of a motor having a large diameter and a high torque. Because the length of the motor remains small, the motor and counterweight can be accommodated in a space normally reserved for a counterweight in the elevator shaft. The motor shaft lies in the counterweight substantially midway between the guide rails. The number of ropes is equal on both sides of a plane going through a center of the guide rails.