| 摘要 |
A wheel arrangement comprises an essentially vertical driving shaft (120), an essentially circular wheel (111) rotatably provided on a wheel shaft (110). The wheel shaft is rotatable about the vertical driving shaft. A gear (14, 24) interconnects the wheel shaft and the driving shaft. The wheel shaft is provided with an integral circumferential flange (110b) provided with a number of flange holes (110c), wherein the circumferential flange is provided at a distance from the outer end of the wheel shaft. Fastening means, such as bolts, are provided in the flange holes to attach the wheel to the wheel shaft. This arrangement provides for attachment of the wheel to the wheel shaft with a minimum of separate parts. |
