A valve plate and plunger hydraulic pump with adjustable volume chamber

Abstract

A distribution plate and a plunger hydraulic pump with an adjustable volume cavity, the distribution plate includes a distribution plate body, and a buffer mechanism is arranged on the flow plate body, and the buffer mechanism includes a buffer cavity provided along the radial direction and a ring direction provided in the circumferential direction. The outer end of the accommodating chamber is sealed by a plug, and a second spring and a plunger are arranged inside it, and the two ends of the second spring respectively abut against the plug and the plunger; The lever is connected to the main body of the distribution plate through the rotating shaft in the middle; the upper end of the annular accommodation chamber is connected with the inner end of the buffer chamber through a communication hole, and the plunger is arranged in the communication hole, and the upper end is fixedly connected with the limit ring. The lower end abuts against the upper end of the lever, and the lower part of the upper end of the lever is connected with the distribution plate body through the first spring. The valve plate helps to alleviate the oil trapped problem of the plunger pump, can significantly reduce the vibration and noise of the plunger pump, and can ensure the efficiency of the plunger pump; the hydraulic pump has small vibration, low noise, and high s efficiency.

Description

technical field [0001] The invention belongs to the technical field of plunger pump manufacture, in particular to a flow distribution plate with an adjustable volume cavity and a plunger hydraulic pump. Background technique [0002] Axial piston hydraulic pump (referred to as axial piston pump) is a hydraulic component that can convert mechanical energy into hydraulic energy. It has many advantages such as high rated working pressure, large flow rate, and convenient variable adjustment. It is widely used in mobile In technical fields such as equipment and fixed equipment. [0003] figure 1 It is a structural principle diagram of a typical axial piston pump in the prior art. In the figure, the cylinder body 101 is arranged with several circular plunger cavities 109 along the axial direction, and the same number of plungers 102 are built in several plunger cavities 109, and one end of the plunger 102 is connected with the oblique in a suitable manner. The disc 103 keeps in ...

AI Technical Summary

Problems solved by technology

This will cause trapped oil in this area, which will easily cause pressure fluctuations and noise of the pump

[0004] In the existing technology, the technical problem of oil trapping is usually alleviated to a certain extent by opening damping grooves (damping grooves, eyebrow grooves) or damping holes (damping holes), but this method will To a certain extent, it causes the connection between the oil suction side and the oil discharge side, thereby reducing the efficiency of the pump

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