A Calculation Method for Wear Life of Slipper-Chuck in Piston Pump

Abstract

The invention provides a method for calculating the sliding shoe-chuck wear life of a plunger pump. The method for calculating the sliding shoe-chuck wear life of the plunger pump includes the following steps of firstly, micro-bulge load calculation, secondly, allowable wear volume calculation, thirdly, allowable wear stroke calculation, fourthly, sliding shoe spin velocity calculation and fifthly, sliding shoe-chuck wear life calculation. The method can be directly applied to products, the sliding shoe spin velocity is determined by establishing the relationship between liquid frictional work and kinetic energy generated by rotating a sliding shoe relative to a chuck, the sliding shoe-chuck wear life of the plunger pump is determined in combination with an Archard adhesive wear model and through theoretical calculation, and the method has the advantage of being high in engineering adaptability.

Description

technical field [0001] The invention provides a method for calculating the wear life of a plunger pump slipper-chuck, in particular to a method for calculating the wear life of a plunger pump due to the rotation of the slipper and the chuck under the action of fluid friction, which belongs to the analysis technology of wear life field. Background technique [0002] As the power component of the aircraft hydraulic system, the performance of the aviation hydraulic pump directly affects the working condition of the hydraulic system, and more than 80% of the failures of the aviation hydraulic pump are caused by wear and tear. At present, the research on the wear failure of aviation hydraulic pumps mainly focuses on the three typical friction pairs of the valve plate and the rotor, the plunger and the cylinder, and the sliding shoe and the swash plate. The wear analysis and design of boots and swashplates, while the research on the wear of sliding shoes and chucks is less. [0...

AI Technical Summary

Problems solved by technology

At present, the research on the wear failure of aviation hydraulic pumps mainly focuses on the three typical friction pairs of the valve plate and the rotor, the plunger and the cylinder, and the sliding shoe and the swash plate. The wear analysis and design of boots and swash plates, but less research on the wear of sliding shoes and chucks

[0003] Most of the current aviation hydraulic pump products have made corresponding engineering improvements to the wear problem of the sliding shoe and the swash plate, such as adding wear-resistant plates for the swash plate and silver plating on the lower surface of the sliding shoe, etc. These measures have greatly improved the sliding However, there has been a lack of corresponding theories and methods for the wear of sliding shoes and chucks, making the corresponding engineering problems increasingly prominent. This is also the case in the durability test of an engine-driven pump product of a certain type of aircraft. Exposed a lot of wear and tear on the shoes and chucks, resulting in increased oil return

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