Belt conveyer transportation system utilizing magnetic attraction

A belt conveyor type transportation system by magnetic attraction comprising at least one conveyor line including a plurality of conveyor units arranged successively, each of said conveyor units comprising endless belt means including a magnetic material as a constituent element encircled around on a pair of a driving wheel and idle wheel to be driven therearound at a respective speed independent of the speeds of the other units, and at least one moving body disposed on said conveyor line, said moving body including magnet means for magnetically attracting said magnetic belts, whereby said moving body is moved forcibly along said conveyor line by following the circulating speed of the magnetic belt means of each of said conveyor units, said belt means having a length corresponding to the distance between shafts at both ends of conveyor units and being equal to the length of said magnet means for attaining linear, continuous acceleration without frictional slippage, said magnet means being constantly energized to produce magnetic attraction strong enough to overcome the friction force due to the load added to the magnet belt means by the magnet means, said magnet means being attracted by magnetic force towards the surface of the magnet belt means and being in facing relation therewith at less than a predetermined gap, said magnet means being constructed so that magnetic attaction between two conveyor units is made when the magnet means passes through a portion between the two conveyor units, the ratio of the magnetic attraction between the two units varying gradually with the movement of the magnet means, such that when the velocities of the magnetic belts of both units are different, the velocity of the moving body is varied linearly and gradually from the velocity of one unit to the velocity of the other unit accompanied with slip wherein a plurality of said conveyor lines each including said moving body and a plurality of said conveyor units having, in terms of their own magnetic belt speeds, steplike speed differences with one another, are arranged along at least one side of a car travel line of a continuously operated transportation system, the traveling distance of the moving body required for the moving body speed to synchronize with the conveyor units having different speeds being dependent on the positional dimension of the magnetic means facing the magnetic belt.