| 摘要 |
A transportation system of a floated-carrier type according to this invention includes a carrier (2) capable of running along guide rails (l) with a cargo and load carried thereon. A magnetic unit (l2-l to l2-4) is mounted on the carrier (2) to float the carrier (2) from the guide rails (l). A slowing-down device (4) is provided to slow down the carrier (2) when the carrier (2) is just about to enter into a stop position. Projections (35-l to 35-4) of ferromagnetic material are provided on the side of predetermined portions of guide rails (l) which the magnetic unit (l2-l to l2-4) of the carrier (2) confronts when the carrier (2) is stopped in the stop position. The magnetic unit (l2-l to l2-4), together with the guide rails, establishes a magnetic circuit. The magnetic resistance in the magnetic circuit is smaller at the predetermined portions of the guide rails where the aforementioned projections (35-l to 35-4) are provided than at other portions of the guide rails. When, in this case, the carrier (2) arrives substantially at the stop position, the magnetic flux due to the magnetic unit flows through the aforementioned magnetic circuit in an increasing amount, assuring an increased attractive force between the magnetic unit (l2-l to l2-4) and the predetermined portions of the guide rails (2) where the projections (35-l to 35-4) are provided. As a result, the carrier (2) is attracted toward the location of these predetermined portions of the guide rails (l) so that it is positioned precisely in the stop position. |
