High-temperature lubrication-free universal core-adjusting joint bearing

A high-temperature lubrication-free universal core-adjusting joint bearing comprises a halved inner spherical upper half outer ring, a halved inner spherical lower half outer ring, a halved outer spherical upper half inner ring, a halved outer spherical lower half inner ring, a graphite upper half bearing bush embedded into the outer spherical upper half inner ring through an upper graphite columnpin, a graphite lower half bearing bush embedded into the outer spherical lower half inner ring through a lower graphite column pin, soft graphite filler components arranged on the two end surfaces of the graphite upper half bearing bush and the graphite lower half bearing bush respectively, and upper half glands and lower half glands mounted on the outer end surfaces of the soft graphite fillercomponents on the two end surfaces respectively, wherein the inner spherical upper half outer ring and the inner spherical lower half outer ring are connected through first countersunk conical columnpositioning pins; the outer