Brake wheel coupling

The utility model discloses a brake wheel coupling and relates to the technical field of transmission machinery. The buffer device comprises a buffer assembly, first mounting discs, second mounting discs and bolts, the buffer assembly comprises a fixing column and fixing discs, the fixing discs are fixed to the two ends of the fixing column, the first mounting discs are fixed to the ends, away from the fixing column, of the two fixing discs, and heat dissipation plates are fixed to the circumferential sides of the first mounting discs in an annular array mode; a second mounting disc is arranged at the end, away from the fixing disc, of the first mounting disc, and a plug pin is movably connected into the second mounting disc and the first mounting disc jointly. According to the brake wheel coupling, the buffer assembly, the first installation disc, the second installation disc and the plug pin are arranged, so that the problems that the brake wheel coupling does not have an auxiliary heat dissipation function