Fig 1.
Diagram of adjustable feeding and bale-breaking device.
Fig 2.
Analysis of force and movement of the straw bale-breaking and feeding process.
Fig 3.
Model of feeding and breaking device and square-bale maize straw.
Table 1.
Simulation parameters of the feeding device.
Table 2.
Levels and codes of experimental variables.
Fig 4.
Four stages of feeding square-bale maize straw.
Fig 5.
Change curve of bonding-bond corresponding to the four stages of feeding.
Table 3.
Factors and responses of experiments.
Table 4.
ANOVA results for experimental data.
Fig 6.
Response surfaces and corresponding contour plots showing the interactions.
(a) bale-breaking roller rotating speed (x1) and bale-breaking roller height (x2) on bonding bond destruction rate (Y1), (b) bale-breaking roller rotating speed (x1) and bale-breaking knife quantity (x3) on bonding bond destruction rate (Y1), (c) bale-breaking roller height (x2) and bale-breaking knife quantity (x3) on bonding bond destruction rate (Y1), (d) bale-breaking roller rotating speed (x1) and bale-breaking roller height (x2) on particle average speed (Y2), (e) bale-breaking roller rotating speed (x1) and bale-breaking knife quantity (x3) on particle average speed (Y2), and (f) bale-breaking roller height (x2) and bale-breaking knife quantity (x3) on particle average speed (Y2).
Fig 7.
Experiment collected sample of the square-bale maize straw.