Investigation of end effect in integrated permanent magnetic damper for cylinder block–valve plate pair in axial piston pump

Boran, Du; Jiang, Jihai; Li, Geqiang

doi:10.1063/5.0080222

Cited by 2 publications

(2 citation statements)

References 25 publications

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“…The static pressure support of the sealing rings on the inner and outer sides of the inlet and outlet tapered grooves provides load-bearing capability to the distribution component. The pressure distribution within the inner sealing ring (R 1 ~R2 ) of the spherical distribution component is as follows [11,12]:…”

Section: Analysis Of the Load-bearing Mechanism Of Spherical Distribu...mentioning

confidence: 99%

Research on Bearing Mechanism of Spherical Valve Pairs of Axial Piston Pumps

Xu,

Zhao,

et al. 2024

Actuators

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The hydraulic system drives the cutter head mechanism to realize the excavation of large tunnel boring equipment, which puts forward the technical requirements of high pressure and large flow to the pump source. The traditional small displacement axial piston pump uses a planar valve plate. However, under high flow and heavy load conditions, the planar valve plate configuration is prone to uneven wear due to the high-pressure and -velocity (PV) value and pressure shock, which ultimately affects the reliability of the system. A simulation analysis of the load-bearing characteristics of the spherical valve plate mechanism is conducted. The Computational Fluid Dynamics (CFD) method was used to construct flow field models for different valve plate oil film structures to calculate differences in their load-bearing capacities. Additionally, the reasons for variations in load-bearing characteristics based on the curvature radius of the spherical valve plate were analyzed. The simulation results demonstrate that the spherical valve plate exhibits superior leak and load-bearing performance compared to the traditional flat valve plate. Furthermore, the curvature radius of the spherical valve plate directly affects the pulsation characteristics of the piston pump. Smaller curvature radii increase the contact area of the oil film, resulting in greater fluctuation in oil film load-bearing, whereas larger curvature radii lead to increased oil film leakage. Using simulation calculations on heavy-load, high-displacement axial piston pumps, it is determined that the optimal curvature radius for stable load-bearing is 350 mm.

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Section: Analysis Of the Load-bearing Mechanism Of Spherical Distribu...mentioning

confidence: 99%

Research on Bearing Mechanism of Spherical Valve Pairs of Axial Piston Pumps

Xu,

Zhao,

et al. 2024

Actuators

View full text Add to dashboard Cite

show abstract

“…The supporting force of the oil film of the distributing pair to the magnetic cylinder block is obtained as follows. 30,31…”

Section: Analysis Of the Cylinder Block Tilting Torquementioning

confidence: 99%

Research on the improvement of tilt characteristics for the axial piston pump cylinder block based on the magnetic auxiliary support for distributing pair

Zhang

Boran

Xiang

et al. 2023

Advances in Mechanical Engineering

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Due to the unbalanced effect of force and torque on the axial piston pump cylinder block, a wedge angle of oil film exists between the valve plate and the cylinder block. The cylinder block tilt seriously affects the oil film and the distributing pair lubrication state, leading to boundary lubrication appears in some cases. To reduce the impact of the tilt on the cylinder block of axial piston pump, the magnetic auxiliary support (MAS) for the pair is proposed. The MAS reduces the overturning torque on the cylinder block by the auxiliary magnetic support. Then the tilt characteristics of the cylinder block are improved. In this paper, the cylinder block overturning torque equations under the support of MAS are established, and the improvement of overturning torque is analyzed. An experimental platform was constructed to measure the thickness of the oil film of the pair and test the tilt of the cylinder block. The experimental results showed that the MAS can effectively improve the tilt of the cylinder block and the performance of the axial piston pump. This method has certain reference significance for the research of axial piston pumps.

show abstract

Investigation of end effect in integrated permanent magnetic damper for cylinder block–valve plate pair in axial piston pump

Cited by 2 publications

References 25 publications

Research on Bearing Mechanism of Spherical Valve Pairs of Axial Piston Pumps

Research on Bearing Mechanism of Spherical Valve Pairs of Axial Piston Pumps

Research on the improvement of tilt characteristics for the axial piston pump cylinder block based on the magnetic auxiliary support for distributing pair

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