The Balance Two-ring Axial Piston Pump Cylinder Characteristics Research

Axial piston pump hydraulic system is one of the important dynamic element, and the cylinder is a key part of its transmission power. Cylinder piston pump directly involved in two pairs of friction that is important and piston pair assignment deputy position in the entire pump pivotal, while the average axial piston pump cylinder the uneven, affecting its performance. Therefore, this paper analyzes the common axial piston pump characteristics and working principle, proposed a originality balance two-ring axial piston pump, which will help to improve the problem of key parts of the force, improve the Axial piston pump performance. As the important part of the axial piston pump, the balance two-ring axial piston pump cylinder force is more complex, which design direct impact on the life of the axial piston pumps life and work performance. In this paper, the following work of the cylinder:In structure, adopting two rows of staggered plunger pore structure, even number both of the inner and outer row pistons, opposite side high pressure oil port structure of the valve plate, cross-match double bevel swash plate, together constitute the unique structure of the balance two-row axial piston pump. At the same time, derive the size design formulation with the basic structure of the cylinder.In different parity number of the inner and outer row, use Matlab to analyze the the flow pulsations of the balance two-ring axial piston pump in order to analyze the impact of the different structures cylinder to the entire pump. On this basis, analyze the force of the balance two-ring axial piston pump cylinder, derive the cylinder overturning moment formula, analyze the impact of different parity number pistons to the overturning moment. of the cylinder.Build the cylinder 3D model, use finite element analysis software Ansys-workbench to analyze the impact of the relationship between the structure dimensions of the cylinder such as inner and outer piston diameter, the distribution radius of inner and outer piston with the cylinder stress, axial strain, radial strain, and draw the relevant optimal size of the cylinder.Based on AMESim establish the balance two-ring axial piston pump simulation model, analyze the influence of the cylinder stagger angle on the cylinder with the same even number, analyze the impact of cylinder stagger angle to the flow pulsation, in this condition, conclude optimal stagger angle values. And analyze the swash plate angle which is closely related to the forces of Ihe cylinder, obtain the three-dimensional graphics of the inner and outer row swash plate angle and the force of the swash plate, explores its rule, obtain the swash plate angle optimum value.In this paper, the cylinder as the research object, its structural characteristics,,flow characteristics, dynamic balancing features, as well as the structure and flow characteristics, structure and balancing characteristics aspects were analyzed, the results have an important reference value and use value in structural design and analysis performance of the balanced two-ring and rings of axial piston pump.