Research On The Characteristics Of The Flow Distribution Mechanism Of The Balanced Double-row Axial Piston Pump

As one of the most important actuators in the hydraulic system,the axial plunger pump is an indispensable part of it.With the continuous progress of my country’s industry,the research of axial plunger pumps is becoming more and more in-depth,and its performance is also constantly improving.However,the limitations of traditional axial piston pumps are still obvious.Therefore,based on the design experience of the traditional single-row axial piston pump,this paper designs a balanced double-row axial piston pump by improving the common double-row axial piston pump,which is the same as the common double-row shaft Like the plunger pump,it has a double-row plunger structure.The difference is that the single swash plate of the flow distribution mechanism is changed to an inner and outer double swash plate,so that it can maintain the advantages of the double-row pump,such as large flow rate and high pressure,and can adapt to more complex Working condition.This article takes the balanced double-row axial piston pump as the research object to study the characteristics of its flow distribution mechanism.Its main research work is as follows:1.The flow distribution mechanism of the balanced double-row axial plunger pump adopts a double swash plate structure,the inner swash plate is nested inside the outer swash plate,and the two swash plates are distributed on different sides of the height.Through the analysis of the design formula of the traditional axial piston pump combined with the structure of the balanced double-row axial piston pump,the design formula of the components of the balanced double-row axial piston pump is re-derived based on the analysis results,mainly the flow distribution Design formula of the dish.Derive the design formula of the internal and external triangular grooves of the inner and outer swash plates of the balanced double-row axial plunger pump,and analyze the relationship between the inner and outer swash plate parameters.Design Parameters.2.Analyzed the movement process of the balanced double-row axial piston pump,established a mathematical model of pressure and flow pulsation,substituted the two into MATLAB to calculate the internal and external discharge flow pulsation separately,and compared the internal and external triangular groove parameters,plunger The influence of factors such as indexing circle radius on flow pulsation.3.Analyzed the leakage form of the distribution pair of the balanced double-row axial plunger pump,established a mathematical model of the leakage of the parallel oil film body and the wedge-shaped oil film body,and imported the mathematical model into MATLAB.By setting different sealing band widths and waist shapes The parameters such as the center angle of the groove are used to investigate the effect of the leakage of the two oil film bodies on the total leakage.4.Through the force analysis of the balanced double-row axial plunger pump valve plate,establish a simplified valve plate parameterized model,import Ansys workbench software to obtain the valve plate stress and strain,and use this as a basis to optimize the valve plate parameters.Figure[53]table[10]reference[73].