Automatic traction connection and fast disconnecting device for rail type flat car

The utility model provides an automatic traction connection and fast disconnecting device for a rail type flat car, which consists of a mother pin and a son pin, wherein the mother pin comprises a mother pin head, a pin bolt, a lock groove, a rotating shaft and a rotating shaft seat, the mother pin head is in a flat mushroom head shape, the pin bolt and the mother pin head are made into a whole, the diameter of the pin bolt at the lock groove part is a little greater, the rotating shaft and the pin bolt are fixedly connected, the rotating shaft seat is fixed onto the rotating shaft, the son pin comprises a son pin head, a separation rod and an inclined plate, the son pin head is matched with the mother pin head, the inclined plate is fixed at a opening part of the son pin head, and the separation rod passes through the corresponding pin bolt part of the son pin. The automatic traction connection and fast disconnecting device has the advantages that the structure is simple, the manufacture is easy, the automat