Simulation of the Working Performance of a Shearer Cutting Coal Rock

Table 4

The relationship between the rotational speed and the three-directional force of the drum.

Rotational speed (r/min)	X-force (mean/N)	Fluctuation coefficient of X-force	Y-force (mean/N)	Fluctuation coefficient of Y-force	Z-force (mean/N)	Fluctuation coefficient of Z-force	Resultant force (mean/N)	Fluctuation coefficient
75	−6.52e3	−0.0104	1.08e2	0.3406	1.17e4	0.0076	2.0154e4	0.0364
85	−6.12e3	−0.0111	−3.03e2	−0.1650	1.12e4	0.0077	1.9351e4	0.0275
95	8.28e3	−0.0093	−5.98e2	−0.102	1.65e4	0.0062	1.9180e4	0.0373
105	−5.82e3	−0.0116	−1.52e2	−0.3480	1.06e4	0.0085	1.8547e4	0.0341