limit wide disc knife：

It is mainly composed of a disc knife, a fixed frame, a compression spring and a regulating device. The disc knife is driven by no power, and is mainly used to cut the surface along the ridge along with the weeds.

 Digging parts：

Mainly by the knife, arbor, the main shovel, vice shovel and excavation angle adjustment mechanism, used to the potato with the whole width of the soil dug, while the vice shovel can prevent the hard objects such as stone damage to the conveyor chain.

Suppress the deepening device：

Mainly by the profile limit wheel, bracket, adjust the body composition, profiling limit wheel is used to control and adjust the excavation shovel excavation depth, and make potato, soil loose, conducive to the late soil separation.

Separate the selected potatoes to the rear of the machine, by adjusting the width of the set baffle, the potatoes placed on the ground in order to pick up.