Complex Effects of Drum Hub Forms and Structural Parameters on Coal Loading Performance

Table 1

The structure parameters of the drum hub.

Drum	I	II	III	IV	V	VI	VII	VIII
Ψ (°)/Ki	90	95	100	105	110	K1 = 1.638e − 1; K2 = 1.001e − 1; K3 = 0	K1 = 1.224e − 1; K2 = 7.984e − 2; K3 = 2.735e − 2	K1 = 1.017e − 1; K2 = 5.401e − 2; K3 = 0