Modification of Gearing for Improving Technical and Economic Characteristics of Drive Gearboxes in Oil Pumping Units

A method for improving the technical and economic characteristics of the drive gearboxes of oil pumping units is presented. Models of gearboxes containing thermally improved Novikov gearing having a standard basic rack profile are considered. The effect of increasing the gear module, as described in the author's previous works, is dramatically enhanced by the proposed longitudinal modification of the surfaces of the teeth, which can be performed using standard equipment. The intensity and rigidity of the teeth are determined by solving the 3D contact problem, while the law of load distribution over the contact areas is determined by performing simulations of actual gearing. The comprehensive modification provides a 2.5- to 4-fold increase in load-bearing capacity at all gear stages, along with a similar increase in their operability.