Title:
EVACUATION LADDER FOR TRANSPORTING HOSPITAL BED
Document Type and Number:
WIPO Patent Application WO/2022/077132
Kind Code:
A1
Abstract:
An evacuation ladder (2) for transporting a hospital bed (12), which is installed in a building (1). Floor guide rails (13) that lead the hospital bed (12) to an entrance of the evacuation ladder (2) is provided on a floor (11) of the building (1), a preset body is provided in the evacuation ladder (2), and a preset loading space is provided within the top portion of the preset body, which comprises: a gravity deceleration device (21) is provided with a decelerator (211) and a transmission shaft (2111) which extends therefrom, and the transmission shaft (2111) also penetrates into driving wheels (212). Upper and lower ends in the interior of two first endless chains (22) each mesh with a first gear (221), and the first gears (221) are meshingly linked with the driving wheels (212). Upper and lower ends in the interior of two second endless chains (23) each mesh with a second gear (231), and the second gears (231) are linked with each driving wheel (212) by means of a transmission chain (24). Two first guide rails (25) and two second guide rails (26) are provided at upper and lower end positions between the first endless chains (22) and the second endless chains (23), respectively. A bearing surface (271) is provided above a plurality of carriers (27), and two guide grooves (2710) for guiding and positioning four casters (121) of the hospital bed (12) are provided on the bearing surface (271). Two sides of the plurality of carriers (27) are each provided with a shaft rod (272), a roller (273) and a fastener claw (274), and two shaft rods (272) are penetratingly fastened to a preset fastener holes of the second endless chains (23). The two rollers (273) of each carrier (27) abut against the two first guide rails (25), so that the two fastener claws (274) are hooked in hanging rods (222) of the two first endless chains (22) for positioning. The two rollers (273) of each carrier (27) abut against the second guide rails (26) so that the two fastener claws (274) are separated from the hanging rods (222) of the first endless chains (22), and the two shaft rods (272) are flipped and lift with the two second endless chains (23). The purpose of quickly pushing the hospital bed (12) into the evacuation ladder (2) to make an escape is achieved by means of the foregoing structure.
Inventors:
TANG PO-YU (CN)
Application Number:
PCT/CN2020/000241
Publication Date:
April 21, 2022
Filing Date:
October 13, 2020
Export Citation:
Assignee:
TANG PO YU (CN)
International Classes:
A62B1/02; A47C19/22; A62B3/00; A62B5/00
Foreign References:
| TWM604635U | 2020-12-01 | |||
| CN211004067U | 2020-07-14 | |||
| CN110384877A | 2019-10-29 | |||
| TWM547992U | 2017-09-01 | |||
| CN211569816U | 2020-09-25 | |||
| US3945469A | 1976-03-23 |
Attorney, Agent or Firm:
KELONG INTERNATIONAL INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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