VARIABLE-DISPLACEMENT AXIAL-PISTON MACHINE Russian patent published in 1996 - IPC

FIELD: mechanical engineering. SUBSTANCE: axial-piston machine has housing with cylinders accommodating pistons connected by rods with rocking plate. Bearing of rocking plate and rocking plate proper are fitted on oblique neck of crankshaft for travel relative to oblique neck under the action of displacement control mechanism. Rocking plate bearing is hinge-connected with counterweight drive mechanism which has slider tie-rod, slider installed in crankshaft cheek cutout for radial displacement relative to cutout, counterweight tie-rods hinge-connected with slider and counterweights installed for turning relative to cylindrical neck of crankshaft. With working displacement changed under action of displacement control mechanism, rocking plate bearing 9 and rocking plate proper move relative to oblique neck, action onto slider tie-rod which makes slider move in crankshaft cheek cutout. Slider turns counterweights relative to cylindrical neck of crankshaft through counterweight tie-rods, preserving constant dynamic balancing at changes in displacement of axial-piston machine. EFFECT: reduced axial overall size of machine and metal usage by placing counterweights on cylindrical neck of crankshaft for turning relative to neck, and enhanced reliability of operation by preventing possibility of wedging. 7 dwg