Brake device for elevator
US6830132B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 9, 2002 |
| Grant date | Dec 14, 2004 |
| Priority date | — |
| Expiry date | Aug 9, 2022 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB66B5/18
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A brake device for elevator, including a hollow box-shaped elevator car (1) for holding the passenger or luggage; block (5) having a pair of guide rails (6) for guiding upwards and downwards the elevator car (1); a plurality of racks (4) disposed at the block (5) along the lifting direction in vertical; at least one motor (2) tooth-engaged with at least one pinion (2a) at the racks (4), for lifting upwards and downwards the elevator car (1), clutch (12) for controlling power transmission to connect a driving shaft (19) to a driven shaft (20) when the pinions (11) engaged with the racks (4) are rotated at high speed due to elevator crash; hydraulic pump (15) for generating hydraulic pressure from power transmission through a plurality of transmission gears (13) when the clutch (12) delivers rotation; and a plurality of hydraulic cylinders (17) for braking the elevator by brake pad (18) in tight coupled with the guide rails (6) by hydraulic power from the hydraulic pump (15). When fall of the elevator is detected, hydraulic pressure actuates the brake pad to brake the elevator and the brake device utilizes friction with less impact, thereby protecting the passengers or luggage from s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.