Title:
TWO-STAGE TELESCOPIC PASSENGER STAIRWAY AND PASSENGER STAIR TRUCK
Document Type and Number:
WIPO Patent Application WO/2022/257336
Kind Code:
A1
Abstract:
Disclosed are a two-stage telescopic passenger stairway and a passenger stair truck. The passenger stairway comprises a fixed stairway, a main telescopic stairway, and an intermediate stairway located between the fixed stairway and the main telescopic stairway; each of the intermediate stairway and the main telescopic stairway forms a telescopic connection with the fixed stairway by means of a corresponding guide rail pair structure, and the intermediate stairway and the main telescopic stairway have a dragging structure for dragging the intermediate stairway to extend synchronously after the main telescopic stairway extends a set distance; the intermediate stairway is located inside a frame of the fixed stairway; an intermediate stairway guide rail pair between the intermediate stairway and the fixed stairway is located between opposite sidewalls of the frame of the fixed stairway and a frame of the intermediate stairway. The passenger stair truck has said passenger stairway. The beneficial effects of the present invention are: the passenger stairway has a larger height adjustment range, can adapt to more passenger plane models, can reduce the airport operation cost, and is stable in structure, compact in layout, reliable in function and long in service life. The passenger stair truck has the same structural features as the passenger stairway and has excellent characteristics.
Inventors:
HE BIAO (CN)
XIAO SHUANG (CN)
LI JIE (CN)
XIAO SHUANG (CN)
LI JIE (CN)
Application Number:
PCT/CN2021/127222
Publication Date:
December 15, 2022
Filing Date:
October 29, 2021
Export Citation:
Assignee:
CHONGQING TECHKING IND CO LTD (CN)
International Classes:
B64F1/315; B60P3/00
Foreign References:
| CN113511345A | 2021-10-19 | |||
| CN201317465Y | 2009-09-30 | |||
| EP0429032A1 | 1991-05-29 | |||
| CN208731244U | 2019-04-12 |
Attorney, Agent or Firm:
CHONGQING FRONTIER PATENT ATTORNEY OFFICE (CN)
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