| 摘要 |
A friction-driven driverless vehicle includes a frame (1) with support wheels (3) which ride on rails (2). A drive wheel (6) on the frame is provided for frictional contact with a drive shaft (5) parallel to the rails. A motor-driven cam (20) on the frame controls the position of the drive wheel (6) relative to the drive shaft (5). The cam is coupled to the drive wheel by a cam follower (18) and linkage (15,17,14). The drive wheel is supported on the frame for movement between a drive position and an accumulation position. The system allows speed control of the driverless vehicle, without the need for a large number of cams along the track. |
