Shock absorption and isolation support with limiting ring connecting device free of disassembly and replacement

The utility model belongs to the technical field of bridge supports, and discloses a shock absorption and isolation support with a disassembly-free and replacement-free limiting ring connecting device. The main technical characteristics are as follows: an upper seat plate, a first ultra-high molecular weight polyethylene plate, a middle plate, a second ultra-high molecular weight polyethylene plate and a bottom plate are sequentially arranged from top to bottom, the bottom plate is provided with an anti-shear threaded hole, a connecting sleeve is arranged in the anti-shear threaded hole, the outer wall of the connecting sleeve is provided with an outer wall thread matched with the anti-shear threaded hole, and the outer wall of the connecting sleeve is provided with an outer wall thread matched with the anti-shear threaded hole. A threaded connecting hole matched with the shear bolt is formed in the center of the connecting sleeve, and a quick assembling and disassembling groove is formed in the top face of t