Erection scaffolding which is movable in an elevator shaft for the mounting of shaft equipment
US5230404A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 1992 |
| Grant date | Jul 27, 1993 |
| Priority date | — |
| Expiry date | Feb 28, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B19/00
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
For assembling hoistway or elevator shaft equipment, there is moved in vertical direction within the hoistway, an erection scaffolding comprising a first working platform, a second working platform, a third working platform and a fourth working platform. The first working platform is arranged at the lower end and the second working platform at the upper end of a elevator car support frame serving for the reception of the elevator cabin following completion of the erection operations. The erection scaffolding continues above the elevator car support frame with the third working platform and ends with the fourth working platform. A suspension tube, a lower deflecting roller and an upper deflecting roller serve as a suspension system for the elevator car support frame. The lower deflecting roller is arranged at the upper end of the suspension tube and the upper deflecting roller is arranged at an elevator hoistway support. A cable, suspended at an, for instance, 3:1 mechanical advantage ratio of a hoist anchored at the elevator car support frame, interconnects these lower and upper deflecting rollers. The elevator hoistway support carries a velocity limiter and a hoist comprising a ho…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.