The ferry push car before/after autoclave is located at the autoclaving section of AAC production line. It consists of working station, friction wheel/hooking and pushing mechanism, walking wheel, and positioning device. The ferry push car can stop, position, and get aligned to the rails accurately after rapid transverse movement. When being loaded, the ferry push car can convert the frequency and run slowly. However, the empty car can run quickly also by converting the frequency when it is returning.