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A curved raceway swash plate axial piston pump and motor

A technology of axial piston pumps and curved surfaces, applied in the direction of plungers, pumps, pistons, etc., can solve problems such as difficult to achieve large flow and high power density, and achieve the effect of reducing torque and increasing power density

Active Publication Date: 2018-07-13
郭仁发
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the swash plate axial piston pumps / motors in the prior art are unilateral combined hydraulic cylinders and swash plates, which perform work in one stroke, and the return stroke relies on the parts that are prone to fatigue damage-springs to compress and maintain the position, which is difficult to achieve "Large flow", "high pressure" and "high power density" obviously cannot meet the high standard requirements of modern industrial development, so improvement is necessary and urgent

Method used

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  • A curved raceway swash plate axial piston pump and motor
  • A curved raceway swash plate axial piston pump and motor
  • A curved raceway swash plate axial piston pump and motor

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Embodiment Construction

[0034] figure 2 Middle: The function of the spring (1) is to press the valve plate against the cylinder block of the hydraulic cylinder and perform position compensation, so that the clearance between the valve plate and the cylinder block of the hydraulic cylinder is small and leakage is reduced. Various solutions such as butterfly spring or hydraulic pressure can also be selected to achieve Same purpose. The valve plates (2) and (20) are the same as those in the prior art, and all kinds of new technologies are also applicable. The upper waist-shaped valve grooves are respectively connected to the hydraulic inlet and outlet pipes (22), and the valve plate is equipped with positioning parts ( For example, the non-rotation positioning key (21)) is positioned so that it cannot be rotated and can only be used for axial translation for position compensation. The left swash plate (3) and the right swash plate (8) are fixedly connected with bolts and used as a housing. All radial ro...

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Abstract

The invention relates to a spherical raceway swash plate axial plunger pump and a motor, and belongs to the technical field of fluid pressure machines. The spherical raceway swash plate axial plunger pump and the motor solve the two problems, which are long standing, of a swash plate plunger pump and a motor in the prior art, wherein the two problems exist in two key friction pairs, namely a plunger and piston shoes and a swash plate and the plunger and a cylinder. Bad working conditions can be completely eliminated. The spherical raceway swash plate axial plunger pump and the motor are characterized in that rolling friction is achieved through a radial rolling shaft, a dual-effect axial plunger hydraulic cylinder and double swash plates are adopted, the power density is enlarged, efficiency is improved, and the spherical raceway swash plate axial plunger pump and the motor are novel hydraulic elements with advantages.

Description

Technical Field: [0001] The invention relates to an axial plunger pump / motor with a curved raceway swash plate, which belongs to the technical field of fluid pressure machinery. As a pump, it is an energy conversion device that converts rotating mechanical energy into fluid pressure energy. The energy conversion device is also reversible, and can also be used as a motor to convert fluid pressure energy into rotational mechanical energy for output. Background technique: [0002] In the prior art, the swash plate type axial piston pump / motor is one of the most widely used and most important hydraulic power components in hydraulic transmission, and its performance is the key to affecting the working performance of the hydraulic system. However, the design and manufacturing technology of plunger pumps / motors has rarely changed in decades, with aging structure, poor performance and poor reliability. The problem is mainly concentrated in two aspects: that is, the two key pairs of fri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F04B1/16F04B53/00F04B53/14F04B53/16F03C1/06F03C1/28F03C1/32
Inventor 郭仁发
Owner 郭仁发
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