*2.1. The Structure*

The dandelion seed harvester was mainly composed of the collection devices, central control board, transmission pipeline, separation devices, seed storage tank, transmission system, and a rack. The three-dimensional (3D) structure of the harvester is shown in Figure 1. The collection devices mainly consist of a disturbing roller, a collection cover, negative-pressure blowers, and a height-regulating device. The separation devices mainly include a cap, bafflers, a concave board, and a separation drum. The collection devices draw dandelion seeds with pappi from plants to the devices using negative-pressure blowers. The separation devices separate seeds from pappi using a separation drum so that seeds fall in the seed storage tank. The parameter table of the dandelion seed harvester is shown in Table 1.

**Table 1.** Parameters table of dandelion seed harvester.


**Figure 1.** The three-dimensional (3D) structure of the harvester. 1. Collection devices; 2. Central control board; 3. Transmission pipeline; 4. Separation devices; 5. Seed storage tank; 6. Rack; 7. Heightregulating device.
