Performance Analysis of a Hybrid Power Cutting System for Roadheader

Table 2

Parameters of gear transmission.

	Coupler		First-stage planetary gear set			Secondary-stage planetary gear set
Gear	1	2	s	p	r	s	p	r
Transmission ratio	1.55		5.538			4.960
Number of planets	—		3			4
Module (m)	6		6			6
Number of teeth	45	29	13	23	59	25	37	99
Pressure angle (°)	20		20			20
Teeth width (m)	90		55			94