UNIFICATION OF A NEW TYPE OF AXIAL PISTON HYDRAULIC MACHINES WITH DOUBLEROW CYLINDER BLOCKS

Abstract

This article considers several designs of hydraulic machines with double-row inclined cylinder blocks with one and two oscillating units, which comprise a new type of axialpiston hydraulic machines. The hydraulic machines under consideration differ in terms of driving the cylinder blocks in a rotary motion, i.e., through cone rods with elongated pistons and through conic gears fixed to the blocks and drive discs. The former approach allows the working volume of the hydraulic machine to provide for the maximum angle of block inclination of 30°. The latter approach increases the working volume up to 50 % by increasing the block inclination angle to 40°, although implying a more complex design. Another specific feature of the considered designs consists in the symmetry of twin oscillating units in the former case and their non-symmetry in the latter case. This creates the possibility of developing standardized series of such hydraulic machines and unification of the major part of components. This question is esential for the development of series of standard sizes of such hydraulic machines including those with one double-row inclined block.