Reciprocating rotation type rotary joint

The utility model discloses a reciprocating rotation type rotary joint, which comprises a first flange (1), a connecting pipe (2), a shell (3), a sealing ring (4), a shaft retainer ring (5), a bearing (6), an oil nozzle (7), a spacer bush (8), a hole retainer ring (9), a rotating shaft (10) and a second flange (11). The reciprocating rotation type rotary joint is characterized in that the first flange (1), the connecting pipe (2), the shell (3) and the second flange (11) are welded to form a shell assembly, the sealing ring (4) is disposed in an inner groove of the shell (1), the bearing (6) is arranged between an inner cavity of the shell (1) and the outer diameter of the rotating shaft (10), lubricating oil is injected to the bearing (6) by the oil nozzle (7), and all components are integrally connected by the aid of limiting effects of the hole retainer ring (9) and the shaft retainer ring (5). The reciprocating rotation type rotary joint has the advantages of simple structure, stability in supporting, fin