| 摘要 |
PROBLEM TO BE SOLVED: To provide a landing gear device capable of obtaining the stable parking state depending on inclination of a road surface. SOLUTION: The landing gear device 1 has a crank handle 6 as an input shaft. The crank handle 6 is connected to an output shaft of an auxiliary leg 2 and an auxiliary leg 3 through a differential gear in a differential gear box 4. Respective leg parts 22, 23 of the two auxiliary legs 2, 3 are simultaneously descended by turning the crank handle 6. When a sand shoe 33 of the leg part 32 is previously ground-contacted on the inclined road surface 9, differential function of the differential gear is functioned and thereafter only the leg part 22 of the auxiliary leg 2 is descended. At the time when the sand shoe 23 of the leg part 22 is ground-contacted, both auxiliary legs 2, 3 support the trailer. COPYRIGHT: (C)2006,JPO&NCIPI
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