| 摘要 |
PROBLEM TO BE SOLVED: To provide a transportation dolly which minimizes an inner wheel difference, inhibits wobbling to left and right sides during movement, and flexibly follows a step or an irregularity on a ground surface to stably maintain its posture.SOLUTION: A transportation dolly 1 includes: a loading space 2; universal wheels 31; a swing frame 4; a fixed wheel 32; and a damper 5. The swing frame 4 swings a swing part 42 positioned at a center part of the loading space 2 in a vertical direction H. The fixed wheel 32 is provided on a lower surface of the swing part 42 of the swing frame 4. The damper 5 is formed so as to utilize viscosity resistance of a fluid to bias the swing part 42 of the swing frame 4 downward.SELECTED DRAWING: Figure 1 |
