Using the 4φ 2700 × 2100 ball mill of Jinling Iron Ore Mine of Shandong Province as a example, the result analyzed by application of elastohydraulic theory indicates that the lubricating condition between tooth surfaces of the gear drive of a ball mill is the lubrication between a rigid body and elastic fluid with variable viscosity under the normal operating condition.
With the development of powerful coal mining machinery,direct to the shortcomings of gear drive it is neccery to make an analysis of gear material selection,heat treatement process,gear machining,gear modification so as to increase intensity,toughness and load ability of gear.
Effects of Boundary Condition and Helix Angle on Meshing Performance of TI Worm Gearing
To exactly describe the contact state and contact area of tooth surface of toroidal involute (TI) worm gearing, the authors introduced boundary condition into contact line analysis.
With helix angle chosen as parameter, the criterion for the existence of meshing boundary line on the surface of TI worm gearing is derived.
According to differential geometry and gear geometry, the equation of meshing for small teeth difference planetary gearing and a universal equation of conjugated profile are established based on cylindrical pin tooth and given motion.
The correct meshing condition for cycloid pin wheel gearing is provided, and the contact line and the contact ratio are also discussed.