Dryer clamping device

The utility model discloses a dryer clamping device, including a transmission shaft, a circular chassis, four fan -shaped spiders, four outer dishes. A nose cone is equipped with in the hookup of transmission shaft one end and hydro -cylinder on the other end, be equipped with four rectangle arc grooves on the circular chassis, and four fan -shaped spiders enclose into a disc together, every fan -shaped spider center all be equipped with with nose cone complex fourth internal cone hole, still be equipped with a soket head cap screw below every fan -shaped spider, four fan -shaped spiders passthrough soket head cap screw and can slide on four rectangle arc grooves on circular chassis, four outer dishes enclose into a ring together, still are equipped with two couples on every outer dish, four outer dishes are through large disc of couple and four fan -shaped spiders components. Through hydro -cylinder drive transmission shaft and nose cone downstream, promote four fan -shaped spiders and outwards slide on circ