Roller shaft sleeve capable of adjusting modularized key plate and sliding block

The invention discloses a roller shaft sleeve capable of adjusting modular key boards and sliding blocks. Two first grooves and two second grooves are formed in an inner cavity of the shaft sleeve body in a mirror symmetry mode, and radial penetrating holes are formed in the positions, corresponding to the centers of the first grooves and the centers of the second grooves, of the shaft sleeve body. The adjusting key plate is arranged in the first groove in a clearance fit mode and used for abutting against the flat bearing face of the journal; the first adjusting mechanism is arranged in the penetrating hole opposite to the first groove and used for adjusting the position of the adjusting key plate in the radial direction; the enclasping sliding block is arranged in the second groove in a clearance fit mode, and the inner side of the enclasping sliding block is an arc surface used for enclasping an arc guide positioning surface of the journal; the second adjusting mechanism is arranged in the penetrating hole