Balanced type double-row large-displacement axial plunger pump

Abstract

The invention discloses a balanced type double-row large-displacement axial plunger pump which comprises a swash plate, a cylinder body, a plunger pair, a valve plate, rotating plates and a driving shaft. The cylinder body is provided with two rows of concentric-circle cross-distributed holes, kidney-shaped holes of the holes incline towards the driving shaft, the kidney-shaped holes and the driving shaft cross by a certain angle to form a centrifugal oil shedding structure, and the self-suction capacity of the pump and the pump revolution speed allowable value are improved; the swash plate comprises two slopes which cross to for an X shape, the cross line passes through the center of a spline of the driving shaft, capsizing moment of reactive force of the swash plate on the cylinder body is reduced, the suspension length of the plungers is reduced, the stress condition of the cylinder body and the plungers is improved, and improvement of pressure rating of the pump is facilitated. The rotating plates are arranged on the two slopes, and abrasion of piston shoes and the swash plate is reduced.

Description

technical field [0001] The invention relates to an axial piston pump, in particular to a balanced large-displacement double-row axial piston pump, which can significantly improve the power density and self-priming performance of the pump, and at the same time significantly improve the impact of the cylinder body and the plunger. Power conditions, while reducing pump pulsation and noise. Background technique [0002] After decades of development, hydraulic transmission technology has become the key technology of modern transmission and control, and is widely used in various fields such as ships, metallurgy, and aerospace; hydraulic pumps, as energy conversion components in hydraulic transmission systems, are the power source of hydraulic transmission systems , its pros and cons directly affect the performance of the entire hydraulic transmission system. With the rapid development of the modern machinery industry, the demand for axial piston pumps is also increasing day by da...

AI Technical Summary

Problems solved by technology

The increase in the number of cylinder holes will lead to the increase of the cylinder body and even the entire pump body, and will also lead to a decrease in the self-priming performance of the plunger pump;

[0009] 4. Use multiple hydraulic pumps to work in series, but this will increase the size of the entire pump body, which is not conducive to improving the power density of the plunger pump. It is not suitable for aerospace and other occasions where volume quality control is very strict.

This method can increase the displacement without significantly increasing the volume and mass of the plunger pump, but the overturning moment on the cylinder body and the drive shaft of this scheme is proportional to the number of rows of cylinder holes, and the double row of cylinder holes will increase the displacement. Overturning moment of block and drive shaft

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