Combined type polyurethane buffer block assembly

The utility model relates to a buffer block assembly. Combined type polyurethane buffer block assembly, including a buffer block subassembly, the buffer block subassembly includes in pipy a cushion collar and a pipy outer cushion collar, the outer wall of cushion collar including outer cushion collar is fixed, interior cushion collar all is cushion collars that the polyurethane material was made with outer cushion collar, is equipped with cylindric arch on the outer wall of interior cushion collar, be equipped with on the inner wall of outer cushion collar with protruding assorted blind hole, during the arch imbedded the blind hole, protruding surperficial cladding had the fibrous layer by asbestos fibre, the surface of outer cushion collar is provided with a plurality of ring groove, has seted up at least one through -hole on the outer cushion collar to the through -hole coincides as bleeder vent, ring groove's the the central axis and the the central axis of interior cushion collar, adheres to the annular f