Increase of the functional parameters of the gear pump of agricultural machinery by increasing its specific working volume

Abstract

The purpose. To detect effect which originates during optimization of parameters of toothing of gear pump (GP). Methods. Theoretical-experimental methods of probe. On the basis of the developed mathematical model of process of feed of GP the design procedure is offered of optimum parameters of toothing, where parameter of optimization is the coefficient of use of volume of wreaths of sprockets. Results. During adaptation (to production conditions) of the construction of experimental pump with the augmented specific working volume they determined an opportunity of decreasing width of a cone at saving working volume of pump matching standard norms. It made it possible to reduce load on bearings of pump which primarily were responsible for reliability of the pump. New dependence is offered for account of load on bearings of pump, which in many aspects is determined by coefficient of overlapping of toothing. During designing the gear pump with optimum parameters and adaptation its operation parameters to standard norms they found synergetic effect, namely: decrease of overall dimensions and mass of the designed pump. Conclusions. The developed design procedure of parameters of toothing of rocking node of gear pump made it possible to design construction of GP with augmented specific working volume and feed. Thus coefficient of use of volume of wreaths of sprockets of the experimental pump grew up to 0,3323, that on 11% was more than at serial pump, and working volume of pump reached 36,33 cm3, that on 14,6% was more than at serial pump. It stipulated synergetic effect which was implemented in lowering overall dimensions and mass of the designed pump.