O-shaped ring mounting assembly with expansion structure

The utility model relates to the technical field of O-shaped rings, in particular to a ring mounting assembly with an expansion structure, which comprises a lower fixing ring and an upper fixing ring, the lower fixing ring is positioned at the bottom of the upper fixing ring, connecting assemblies are arranged on two sides of the top of the lower fixing ring, each connecting assembly comprises a first mounting groove formed in the top of the lower fixing ring, and a second mounting groove is formed in the top of the lower fixing ring. And a connecting block is slidably connected to the lower portion of an inner cavity of the first mounting groove, a first cavity is formed in the connecting block, a fixing rod is fixedly connected to the bottom of an inner cavity of the first cavity, and the surface of the fixing rod is sleeved with a first spring. Compared with the prior art, the quick-mounting type connector has the advantage of quick mounting, in the actual use process, a group of mounting components which