Distribution Mechanism of Asymmetric Axial Piston Pump

Mechanical Science and Engineering Pub Date : 2023-02-03 DOI:10.57237/j.mse.2022.01.005

Guo Hong Zhao, Wang Jun, Zhang Jun Yi

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Abstract

: Pump-controlled single-rod hydraulic cylinders are energy-saving and efficient, which is the development direction of hydraulic systems in the future. However, the flow imbalance caused by the unequal effective areas of the two chambers of single-rod hydraulic cylinders has always restricted the development and application of pump-controlled single-rod hydraulic cylinders. The flow rate of the inlet and outlet ports of the ordinary axial piston pump is equal and the flow rate of the large and small chambers of the single rod hydraulic cylinder does not match. In order to solve this problem, the ordinary axial piston pump is improved into an asymmetric axial piston pump, on this basis, the flow distribution mechanism of the asymmetric axial piston pump is explored, and the design theory of the asymmetric axial piston pump is improved. Theoretical analysis of the relationship between the angle of the distribution window of the asymmetrical axial piston pump and the area ratio of the single-rod hydraulic cylinder is carried out, and its mathematical model is derived. Design of valve plates for asymmetrical axial piston pumps to match single rod hydraulic cylinders with different area ratios. The physical model of the asymmetrical axial piston pump and the asymmetrical axial piston pump controlled single-rod hydraulic cylinder system was established in the computer simulation software AMESim. The simulation analysis of

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非对称轴向柱塞泵配流机理

:泵控单杆液压缸节能高效，是未来液压系统的发展方向。然而，单杆液压缸两腔有效面积不等造成的流量不平衡一直制约着泵控单杆液压缸的发展和应用。普通轴向柱塞泵进出口口流量相等，单杆液压缸大小腔室流量不匹配。为了解决这一问题，将普通轴向柱塞泵改进为非对称轴向柱塞泵，在此基础上，探讨了非对称轴向柱塞泵的流量分配机理，完善了非对称轴向柱塞泵的设计理论。对非对称轴向柱塞泵配流窗角度与单杆液压缸面积比之间的关系进行了理论分析，并推导了其数学模型。非对称轴向柱塞泵配流盘设计与不同面积比的单杆液压缸匹配。在AMESim仿真软件中建立了非对称轴向柱塞泵和非对称轴向柱塞泵控制的单杆液压缸系统的物理模型。的仿真分析

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Mechanical Science and Engineering

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