Magnetic bearing structure for composite material shaft and assembling method of magnetic bearing structure

The invention discloses a magnetic bearing structure for a composite material shaft and an assembling method of the magnetic bearing structure. The magnetic bearing structure comprises a shaft sleeve assembly, a magnetic bearing base assembly and a base sleeve assembly. The shaft sleeve and parts on the shaft sleeve are fixed on the composite material shaft and rotate along with the shaft; and the magnetic bearing base, the parts on the magnetic bearing base, the base sleeve and the parts on the base sleeve are fixed at positions where the bearing structure needs to be mounted. During normal work, the radial magnetic bearings on the base generate electromagnetic force to act on the rotor ring in the shaft sleeve, so that the shaft sleeve and the composite material shaft are supported, and meanwhile, the shaft sleeve is controlled not to generate axial deviation by means of magnetic force in different directions formed by different orientations of the base, the two groups of axial magnetic bearings on the base