The manual stacker refers to a variety of wheeled handling vehicles for loading and unloading, stacking, stacking and short distance transportation of pallet goods into pieces. International Organization for Standardization ISO/TC110 is called industrial vehicles. It has simple structure, flexible control, good fretting and high explosion-proof safety performance. It is suitable for the operation in narrow channel and limited space. It is the ideal equipment for pallet loading and unloading in elevated warehouse and workshop. It can be widely used in petroleum, chemical, pharmaceutical, light textile, paint, pigment, coal and other industries, as well as ports, railways, freight yards, warehouses and other places containing explosive mixtures, and can enter the cabin, carriage and container for pallet cargo loading and unloading, stacking and handling operations.