Surface resistance reducing type hydraulic plunger pump/motor cylinder block

A hydraulic plunger pump and cylinder block technology, which is applied in the field of hydraulic pumps/motors, can solve the problems of poor drag reduction effect and single drag reduction approach, and achieve the effect of reducing friction loss and agitation loss

Active Publication Date: 2018-11-13
LANZHOU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 3. The drag reduction method is single, and the drag reduction effect is not good

Method used

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  • Surface resistance reducing type hydraulic plunger pump/motor cylinder block
  • Surface resistance reducing type hydraulic plunger pump/motor cylinder block
  • Surface resistance reducing type hydraulic plunger pump/motor cylinder block

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Embodiment Construction

[0015] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0016] Such as Figure 1~Figure 3 As shown, the present invention provides a surface drag-reducing hydraulic plunger pump / motor cylinder, including a cylinder 1, a plunger hole 2, an oil hole 3, a shaft hole 4, and a spline 8. The circular surface is provided with drag-reducing grooves 5, protrusions 6, and an oleophobic coating 7. A shaft hole 4 is provided in the center of the cylinder body 1, and plunger holes 2 are evenly distributed around the shaft hole...

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Abstract

The invention relates to a surface resistance reducing type hydraulic plunger pump / motor cylinder block which aims to reduce stirring losses generated by the cylinder body in the plunger pump / motor running process and improve the efficiency of the hydraulic plunger pump / motor. The cylinder block comprises a main cylinder block (1), plunger holes (2), oil through holes (3), a shaft hole (4) and a spline (8), and a resistance reducing groove (5), a protrusion (6) and an oleophobic coating (7) are arranged on the surface of the outer circle of the main cylinder block (1); the shaft hole (4) is formed in the center of the main cylinder block (1), the plunger holes (2) are evenly distributed around the shaft hole (4) of the main cylinder block (1) and communicates with the oil through holes (3)in the bottom of the main cylinder block (1), and the spline (8) is arranged at the head of the shaft hole (4). The resistance reducing groove is formed in the outer circle of the cylinder block, a secondary vortex is formed in the resistance reducing groove when the cylinder body rotates, it like the condition that a row of rolling columns are clamped between the wall face and coming flow, the effect like that of a roller bearing is achieved, sliding friction of the liquid flow and the wall face becomes rolling friction, and the aim of resistance reducing is achieved.

Description

technical field [0001] The invention relates to the technical field of hydraulic pumps / motors, in particular to a surface drag-reducing plunger pump / motor cylinder. Background technique [0002] Hydraulic plunger pump / motor has the characteristics of compact structure, high power density ratio, light weight, high working pressure, high volumetric efficiency and easy realization of variables, etc. It has been widely used in construction machinery, metallurgical equipment, weapon systems and space technology. As the core component of the plunger pump / motor rotor, the cylinder is an important part that constitutes the working chamber of the plunger pump / motor. [0003] As the rotor of the hydraulic pump / motor, the cylinder is submerged in the leakage oil of the pump / motor casing. When the cylinder rotates at high speed with the pump / motor shaft, the oil near the cylinder wall produces a reaction force on the cylinder, that is, the oil flow Viscous frictional drag, causing chur...

Claims

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Application Information

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IPC IPC(8): F04B53/16F04B53/18F04B53/00
CPCF04B53/00F04B53/162F04B53/18
Inventor 刘新强冀宏冯家兴李明泽王风涛贾登娉
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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