| 摘要 |
The present invention relates to a wheel driving device which improves work convenience and user safety by smoothly passing obstacles by moving the center of gravity loaded to an existing fixed drive shaft by forming a rail inside an elastic wheel and moving the drive shaft along the rail. [Reference numerals] (AA) Elastic wheel; (BB) Rail; (CC) Rotation shaft (Drive shaft); (DD) Roller; (EE) Auxiliary rail roller; (FF) Main rotation shaft; (GG) Main rotation shaft support |
