| 摘要 |
PROBLEM TO BE SOLVED: To provide a six-wheel truck having a floor pallet capable of rising/falling, in which a simplified mechanism to move up and down central wheels is provided for enabling stable travel even when the central wheels ground.SOLUTION: Between a first caster frame 20A and a second caster frame 20B with respective universal wheels 25, a third caster frame 20C with fixed wheels 28 are set in parallel. A basic frame 1 is formed by making a X-shape connection between a first basic frame 1A and a second basic frame 1B set in parallel via a connection pin 17 supported on the third caster frame 20C. The connection of one end of the first basic frame is made via a connection pin 15 supported on the first caster frame 20A, and the connection of the other end of the second basic frame 1B is made via a connection pin 15 supported on the second caster frame 20B. The central wheels 28 cannot ground when moved up in the state that a floor pallet 55 falls (b), and can ground when moved down in the state that the floor pallet 55 rises to keep both basic frames 1A, 1B in a X-shape (a). |
