Transportation apparatus

摘要

Transportation apparatus comprising a vehicle, a track supported on the vehicle, a travelling device movable on the track, a plurality of pivotally movable piston-cylinder units driven by a pressure medium interspaced along the track in the longitudinal direction, one end of each of the piston-cylinder units is supported on the vehicle and the other end of each of the units is engageable with an engagement part connected to the travelling device. Cam rails extend along the track and cooperate with portions at the other end of the piston-cylinder units to cause alternating coupling operations of the other end of the piston-cylinder units with the travelling device.