Vibration and Deflection Behavior of a Coal Auger Working Mechanism

Table 2

Deflection displacement statistics under different drilling depths.

Drilling depth	Propulsion resistance/kN			Drilling torque/N⋅m
	Average	Standard deviation	Maximum	Average	Standard deviation	Maximum
Drill-rod 1	24.51	0.57	27.48	222.20	17.02	278.91
Drill-rod 2	25.45	0.54	27.88	240.66	17.45	288.40
Drill-rod 3	25.85	0.54	28.79	270.84	17.83	334.25
Drill-rod 4	26.41	0.50	29.40	297.13	18.21	334.42