Patent ID: 7527001

Claim:
A bogie apparatus, comprising: a chassis, rotation bogie parts respectively disposed at both ends of the chassis, and a composite motion bogie part located at a middle portion of the chassis, wherein each of said rotation bogie parts includes: a circular upper inner ring permanent magnet fixed on a lower surface or a bottom surface of the chassis; a first bogie located under the chassis and having a bogie body; a circular lower inner ring permanent magnet disposed on an upper surface or a top surface of the bogie body of the first bogie, having inner and outer diameters substantially identical to those of the upper inner ring permanent magnet, and aligned with the upper inner ring permanent with a predetermined distance there between, with identical poles of the lower and upper inner ring permanent magnets facing each other so as to generate a repulsion levitation force there between for levitating a car above the chassis; a first upper sleeve fixed to the chassis and coaxial with the upper inner ring permanent magnet; a first lower sleeve mounted to the bogie body of the first bogie and coaxial with the lower inner ring permanent magnet and the first upper sleeve; and a first shaft having: an upper end fitted in the first upper sleeve in such a manner that it can rotate and slide up and down therein; and a lower end fixed in the first lower sleeve, and wherein the composite motion bogie part comprises: a plurality of upper strap permanent magnets arranged substantially parallel to one another at a predetermined interval and fixed on the lower surface of the chassis, the plurality of upper strap permanent magnets being substantially parallel to a transverse direction substantially perpendicular to a longitudinal direction of the chassis; a second bogie located under the chassis and having a bogie body; a plurality of lower strap permanent magnets arranged parallel to one another and fixed on an upper surface or a top surface of a bogie body of the second bogie, the upper strap permanent magnets and the lower strap permanent magnets being aligned with each other, with identical poles of the upper strap permanent magnets and the lower strap permanent magnets facing each other, and a predetermined air gap existing between the upper strap permanent magnets and the lower strap permanent magnets, thereby generating a further repulsion levitation force for levitating the car; a translation track base fixed to the chassis at a center of the plurality of upper strap permanent magnets, and having a guide track parallel to the upper strap permanent magnets; a translation sleeve fitted in the translation track base and movable along the guide track; a second lower sleeve mounted on the bogie body of the second bogie at a center of the lower strap permanent magnets; and a second shaft having: an upper end fitted in the translation sleeves in such a manner that it can rotate and slide up and down therein; and a lower end fixed in the second lower sleeve.