Damping device for cement lining of spheroidal graphite cast pipe

The utility model discloses a spheroidal graphite cast pipe cement lining damping device which comprises a connecting seat, an upper connecting plate and a lower connecting plate, the connecting seat is located between the lower connecting plate and the upper connecting plate, copper sleeves are arranged on the two sides of the connecting seat, an air spring is arranged in the middle of the upper end of the connecting seat, the upper connecting plate is fixed to the upper end of the air spring, and the copper sleeves are of a hollow structure. The guide rod movably penetrates through the copper sleeve and the upper connecting plate and is in direct contact with a pipe body, vibration is transmitted to the connecting seat through the guide rod, and finally the vibration is counteracted through the air spring, so that the vibration influence caused by an ellipse of a cast pipe in the lining coating process can be effectively reduced. 本实用新型公开了一种球墨铸管水泥涂衬减震装置，包括连接座、上连接板和下连接板，连接座位于下连接板和上连接板之间，连接座两侧开设有铜套，连接座上端中部设有空气