Title:
SUPPORT LEG
Document Type and Number:
WIPO Patent Application WO/2021/237939
Kind Code:
A1
Abstract:
A support leg, comprising an inner support leg (20), an outer support leg (10), a nut (21), a threaded rod (11), and a transmission assembly; the transmission assembly comprises a transmission shaft (50), a first passive gear (40), and a moving rod (30); a first transmission gear (51) and a second transmission gear (52) are mounted on the transmission shaft (50), a second passive gear (12) is mounted on the threaded rod (11), and the second transmission gear (52) and the second passive gear (12) both mesh with the first passive gear (40); a first mating portion is provided on the first passive gear (40), and an active gear (31) and a second mating portion are provided on the moving rod (30); the moving rod (30) forms a movable insertion connection on the outer support leg (10) and can be moved between a first position close to the first passive gear (40) and a second position away from the first passive gear (40); when at the first position, the active gear (31) is separated from the first transmission gear (51) and the first mating portion mates with the second mating portion, and when at the second position, the first mating portion is separated from the second mating portion, and the active gear (31) meshes with the first transmission gear (51). The present support leg can implement fast speed and slow speed switching for raising and lowering, has a simple structure, and does not occupy much space.
More Like This:
| WO/2011/086226 | AN ARRANGEMENT FOR SEMI-TRAILER LANDING GEAR AND A CORRESPONDING AUXILIARY DEVICE |
| WO/2007/012427 | SUPPORT JACK |
Inventors:
WU ZHIQIANG (CN)
YANG MINRUI (CN)
YANG MINRUI (CN)
Application Number:
PCT/CN2020/107376
Publication Date:
December 02, 2021
Filing Date:
August 06, 2020
Export Citation:
Assignee:
GUANGDONG FUWA HEAVY IND CO (CN)
International Classes:
B60S9/08
Foreign References:
| CN1065832A | 1992-11-04 | |||
| CN201148158Y | 2008-11-12 | |||
| CN110194130A | 2019-09-03 | |||
| CN110884469A | 2020-03-17 | |||
| CN209987904U | 2020-01-24 | |||
| CN110254401A | 2019-09-20 | |||
| US5927742A | 1999-07-27 |
Attorney, Agent or Firm:
GUANGZHOU JUNCY INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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