Drive unit for a self-propelled elevator car

US5769183A · kind A · utility

Assignee

• INVENTIO AG · CH

Inventors

• Utz Richter · Markgröningen, DE
• Christoph Liebetrau · Menziken, CH
• Albrecht Morlock · Weingarten, DE
• Helmut Heizmann · Stuttgart, DE
• Ortwin Piper · Schwieberdingen, DE

Key dates

• Filing date: May 31, 1996
• Grant date: Jun 23, 1998
• Expiry date: May 31, 2016

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B66B9/02
• WIPO field: Handling
• WIPO sector: Mechanical engineering

Abstract

A drive unit (1,41,51) for a self-propelled elevator car (30) which travels along a pair of guide rails (27) is connected with a car-supporting structure (16) by rocker arms (15) and contact pressure springs (29). An electric motor (2,3,26,31) is coaxial with a wheel shaft (8) which extends therethrough and has a pair of drive wheels (10) mounted at the ends thereof. The motor housing (31) is connected to the axle tubes (11) by releasably attached motor flanges (12). The motor (2,3,26,31) drives the wheel axle (8) in rotation through a speed-reducing planetary gear (33) and a brake (32,34) which prevents rotation of the wheel axle (8) can be released selectively. An auxiliary drive (35,36,37) mounted on the motor (2,3,26,31) selectively rotates the wheel axle (8) in response to a power failure.