Title:
PROTECTIVE APPARATUS AND AERIAL WORK DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/121791
Kind Code:
A1
Abstract:
A protective apparatus and an aerial work device, the protective apparatus comprising a bracket (1) and a cover (2); the upper side of the cover (2) is hinged to the upper side of the bracket (1); the protective apparatus further comprises a pull-down apparatus (4); the pull-down apparatus (4) comprises a fixed pulley (403), a movable pulley (404), a push rod (407) and a pull rope (401); the fixed pulley (403) is fixedly connected to the cover (2); the movable pulley (404) is located above the fixed pulley (403); the movable pulley (404) is slidingly connected to the cover (2); a fixed end of the pull rope (401) bypasses the movable pulley (404) and is connected to the fixed pulley (403); and an upper end of the push rod (407) is connected to the movable pulley (404). Once the cover (2) is opened from the bracket (1), the push rod (407) and the movable pulley (404) move downward under the action of gravity, so that a handle end (402) of the pull rope (401) hangs down, and it is then convenient for an operator to pull the handle end (402); when the cover (2) needs to be closed, the handle end (402) is pulled downward, and once a lower end of the push rod (407) is in contact with the bracket (1), the movable pulley (404) moves up; and at said time, the handle end (402) of the pull rope (401) is driven to move up to receive and store the pull rope.
Inventors:
LI XIPING (CN)
LIU GUOLIANG (CN)
ZHENG JIPING (CN)
LIU GUOLIANG (CN)
ZHENG JIPING (CN)
Application Number:
PCT/CN2021/135277
Publication Date:
June 16, 2022
Filing Date:
December 03, 2021
Export Citation:
Assignee:
HUNAN SINOBOOM INTELLIGENT EQUIPMENT CO LTD (CN)
International Classes:
E05F11/04
Foreign References:
| CN112431501A | 2021-03-02 | |||
| GB579348A | 1946-07-31 | |||
| CN202831968U | 2013-03-27 | |||
| TW443419U | 2001-06-23 | |||
| CN210195797U | 2020-03-27 | |||
| CN211500452U | 2020-09-15 | |||
| CN202011423985A | 2020-12-08 |
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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