2.1.1. Overall Structure

The spring-finger potato picking device is mainly composed of a spindle, a springfinger shaft, a crank, a curved cover, a roller, a spring-finger, and a roller disc, as shown in Figure 1. The device has three sets of spring-finger, with each set evenly distributed on the spring-finger shaft. The crank is connected at one end to the roller and at the other end to the spring gear shaft that passes through the drum disc. As the roller rolls in the cam chute, the crank pushes the spring gear shaft to move the spring-finger along a set course. The curved hood is directly connected to the frame at one end and the other end is staggered with the spring-finger to prevent debris from entering the pickup.
