| 摘要 |
PROBLEM TO BE SOLVED: To eliminate the complicated control, and to reduce the rotating radius as small as possible by mechanically connecting steering shafts of three or more wheels having directivity to each other for rotation, and performing the steering so that all wheels are always directed in the same direction. SOLUTION: In a carrier 13, four wheels 11, for example, are fitted through steering shafts 9, and the wheels 11 have directivity for traveling in the only direction decided by the steering shaft 9, and a traveling motor 10 is fitted to all or a part of the wheels 11. A sprocket 6 is fitted to all the steering shaft 9, and connected to each other by fitting a chain 1 so that all the wheels 11 are always directed in the same direction. When the steering motor 12 rotates the steering shafts 9 through a center shaft 4 so as to control the traveling motor 10 and the steering motor 12, the carrier 13 can be moved in all direction. Since the traveling direction can be changed without moving the carrier 13, direction change is enabled at a remarkably small rotating radius, and the carrier 13 can be moved in any direction without changing direction of the carrier 13. |
