Anti-deviation coring machine

The invention relates to the technical field of coring machines, and discloses an anti-deviation coring machine which comprises two sets of supporting longitudinal beams, a supporting cross beam A and a supporting cross beam B are arranged at the two ends of the sides, close to each other, of the two sets of supporting longitudinal beams correspondingly, and two sets of symmetrical sliding columns are jointly arranged at the two ends of the top of the supporting cross beam A and the tops of the supporting longitudinal beams; by arranging the ball clamping mechanism matched with the coring drill bits with different diameters, stable support can be provided for the coring drill bits during operation, so that the bottom of the coring drill bit does not swing during rotation, normal operation of coring is guaranteed, and the coring efficiency is improved. The bottom of the coring machine is stably supported by the positioning and supporting mechanism, and the design of holding power in a traditional structure is