Vehicle exhaust pipeline heat insulation device

The utility model discloses a heat insulation device for a vehicle exhaust pipeline. INCLUDING A MAIN THERMAL SHIELD, a sound absorption bearing cover is arranged in the main heat insulation cover; abuffer spring is arranged at the upper end of the sound absorption bearing cover; stabilizing blocks are arranged on the outer surfaces of the two ends of the buffer spring, an adjustable outer layeris arranged on the outer surface of the upper end of the main heat insulation cover, movable anastomosis side plates are arranged on the outer surfaces of the middles of the two ends of the main heatinsulation cover, and disassembling and assembling blocks are arranged on the outer surfaces of the two sides of the lower ends of the movable anastomosis side plates. The utility model relates to a heat insulation device for a vehicle exhaust pipeline. According to the heat-insulating pipeline, the sound-absorbing bearing cover, the movable matching side plates and the adjustable outer layer arearranged, so that the heat-i