Study On The Theory And Applications Of The Low Viscosity Lubricants For Green Mining

Reynolds equations taking into account of the inertia effect and boundary slip effect based on two kinds of cylindrical coordinate systems are derived from continuity equation and Navier-Stokes equation. The numerical solutions for the Reynolds equations are provided. The influence of the inertia effect and boundary slip effect on the low viscosity lubricants lubrication are researched. The influence of the groove molded lines on the pressure fields and the loading capacity of spiral groove thrust bearings are researched. For improve the loading capacity and the anti-mud capacity, a new kind of spiral groove thrust bearings in which rubber are used is designed. Elastohydrodynamic lubrication (EHL) model for spiral groove rubber thrust bearings is established. According to this model, the EHL analysis of spiral groove thrust bearings are carried out. Water supported belt conveyor is designed. The mathematical model of water cushion pressure fields is derived. The distribution of water cushion pressure fields was simulated by using different numerical solutions. The influences of the design parameters include diameter and distribution of the muzzles on the load capacity of the conveyor are researched, provide theory base and reference for improving the work performance of the conveyor. Account of the work characters of coal mine machinery, the work situation and area of coal mine machinery which fit for use water lubrication are made sure. The materials of water-lubricated friction pairs fit for coal mine machinery are chose. The influence of the content of impurity such as grime in water on the lubrication performance of the water-lubricated friction pairs are researched and numerical simulated.