Auxiliary mechanism for return discs of axial plunger pump

Abstract

The invention discloses an auxiliary mechanism of return discs of an axial plunger pump, and relates to the technical field of axial plunger pumps. The auxiliary mechanism comprises a wear-resistant disc, a plurality of wear-resistant protective plates and a plurality of connecting assemblies, wherein the wear-resistant disc comprises an annular plate and a plurality of lug-shaped protruding plates arranged in the circumferential direction of the outer edge of the annular plate, and one wear-resistant protective plate is arranged below each lug-shaped protruding plate; one connecting assemblyis used for connecting one wear-resistant protective plate and one lug-shaped protruding plate, and the connecting assemblies are used for fixing the wear-resistant protective plates and the wear-resistant disc to an end cover; each wear-resistant protective plate comprises an arc-shaped main body plate and an arc-shaped supporting plate arranged on the lower portion of the inner side of the arc-shaped main body plate; the return discs are placed between the wear-resistant disc and the wear-resistant protective plates, and the arc-shaped supporting plates are used for supporting the return discs; and the inner side faces of the arc-shaped main body plates are used for positioning the return discs. According to the auxiliary mechanism of the return discs of the axial plunger pump, an oil film gap of a sliding shoe pair can be guaranteed, the reliable return of a plunger can be guaranteed, and the later maintenance cost can be saved.

Description

technical field [0001] The invention relates to the technical field of axial piston pumps, in particular to an auxiliary mechanism for a return plate of an axial piston pump. Background technique [0002] For axial piston pumps, the oil film gap between the sliding shoe and the bearing surface of the sliding shoe pair needs to be strictly controlled to ensure that the sliding shoe pair is in the state of oil film contact or a mixed contact state of oil film and no oil film; the roughness of the bearing surface of the sliding shoe pair In particular, the roughness of the side with the higher surface hardness of the shoe pair needs to be strictly controlled to make the surface as smooth as possible. Error and roughness are difficult to meet the requirements. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides an auxiliary mechanism for the return plate of the axial plunger pump, which can ensure the oil film clea...

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Problems solved by technology

[0002] For axial piston pumps, the oil film gap between the sliding shoe and the bearing surface of the sliding shoe pair needs to be strictly controlled to ensure that the sliding shoe pair is in the state of oil film contact or a mixed contact state of oil film and no oil film; the roughness of the bearing surface of the sliding shoe pair In partic

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