Link for citation: Jasem M.A., Kraunish P.Y. Wave face kinematic reducer for piston pumps during extraction of heavy oil. Bulletin of the Tomsk Polytechnic University. Geo Аssets Engineering, 2022, vol. 333, no. 2, рр. 17-25. In Rus.

The relevance of the research is caused by the need of ensuring the efficiency of gear reducers for piston pumps in the harsh operating conditions for high-viscosity oil extraction from low production wells. The possibility of increasing the load capacity of the usual involute engagement due to its rational geometry, the use of high-quality materials and heat treatment is not limitless. Therefore, the problem of creating new types of mechanical gears and engagement systems is particularly relevant. The main aim of the research is to determine the dependence of the duration of mating teeth on the working tooth profile of the wave face kinematic reducer for one cycle of precession φ. Objects: the wave face kinematic reducer as a part of piston pumps in the harsh operating conditions during the extraction of high-viscosity oil from low production wells. Methods: methods of matrix and vector algebra, numerical techniques of the nonlinear equations, theory of mechanisms and machines, the main theory of spatial gear. Results. The paper considers the problem of creating a wave face kinematical reducer with multiple-tooth contact. The synthesis of multi-pair gearing for a wave face kinematical reducer, which ensures the constancy of transfer function, provides for: development of a mathematical model of gearing taking into account the peculiarities of the interaction of teeth during special-spherical motion; description of the profile of the teeth by a system of equations for a spherical surface and for a normal section of teeth for internal gearing; identification via MathCAD 2010 Professional program of a mathematical experiment and determination of the area of existence of 100 % multiple-tooth contact of teeth by comparing the shape of their profile with the nature of the analytical function of multiple-tooth contact.