The top lift transfer machine is generally used to change the direction of transportation of items, and to feed or move items into or out of the main conveyor line through a fork. It has the characteristics of large load-bearing capacity, simple structure, stability and reliability. In roller conveyors and chain conveyors, for items with a sorting speed of less than 30 pieces per minute but a single item weight greater than 2000kg, a top lift transfer machine is preferred. The equipment adopts PLC programmable control, making it easy for items to enter and exit the main and auxiliary conveyor lines without collision, squeezing, and other phenomena.