Hydraulic cylinder of carbon fiber composite material

A technology of composite materials and composite material layers, applied in the field of carbon fiber composite hydraulic cylinders, can solve the problems of unsatisfactory strength, stiffness, fatigue resistance and safety, and heavy weight of all-metal hydraulic cylinders, so as to solve the problem of light weight and save Power and energy saving effects

Inactive Publication Date: 2014-04-16
WUHAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: to provide a hydraulic cylinder made of carbon fiber composite material to solve the problem that the a...

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  • Hydraulic cylinder of carbon fiber composite material

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with the embodiments and accompanying drawings.

[0025] Carbon fiber composite material hydraulic cylinder provided by the present invention, its structure is basically the same as the prior art, see figure 1 , mainly composed of cylinder bottom 1, cylinder body 2, spring retaining ring 3, collar 4, snap ring 5, piston 6, sealing ring 7, O-shaped sealing ring 8, piston rod 9, cylinder head 10, dustproof ring 11 , wherein: the cylinder block 2 is made of high-strength carbon fiber precursor with a strength ≥ 3500MPa as a reinforcing material, a thermosetting resin as a matrix, and is made of a carbon fiber composite material layer by winding carbon fiber. The materials of cylinder bottom 1, piston 6 and cylinder head 10 are all made of high-strength aluminum alloy with strength ≥ 500 MPa, and the material of piston rod 9 is high-strength metal material.

[0026] The carbon fiber winding molding proces...

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Abstract

The invention discloses a hydraulic cylinder of a carbon fiber composite material. A cylinder body (2) is made of a high-strength carbon fiber precursor of which the strength is greater than or equal to 3500MPa as a reinforcing material and thermosetting resin as a substrate by adopting a technology of winding and molding carbon fiber into a carbon fiber composite material layer; a cylinder bottom (1), a piston (6) and a cylinder cover (10) are made of a high-strength aluminum alloy of which the strength is greater than or equal to 500MPa; a piston rod (9) is made of hard chromium-plated steel. Compared with a common hydraulic cylinder made of metal, the hydraulic cylinder has the significant advantage of weight reduction, and the weight-carrying capacity is obviously superior to that of an existing common hydraulic cylinder made of metal. Therefore, the hydraulic cylinder has a good application prospect in hydraulic drive and hydraulic control equipment in which water is used as a fluid medium.

Description

technical field [0001] The invention relates to a hydraulic cylinder, in particular to a carbon fiber composite material hydraulic cylinder. Background technique [0002] High-pressure hydraulic products require high-strength structural components. Traditionally, high-strength steels are mostly used in typical mobile construction machinery hydraulic equipment, while low-density alloys are mostly used in equipment that requires high weight control. Since the specific gravity of carbon fiber composite materials is less than 1 / 4 of that of steel, the tensile strength of carbon fiber composite materials is generally above 3500MPa, which is 7-9 times that of steel, and the tensile modulus of elasticity is 23000-43000MPa, which is also higher than that of steel. The use of carbon fiber composite materials in hydraulic systems makes it possible to design lightweight and high-strength hydraulic components, which can be widely used in industrial fields such as construction machinery...

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Application Information

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IPC IPC(8): F15B15/14B29C70/30
Inventor 周祖德黄向阳胡业发张锦光丁国平宋春生徐仕伟
Owner WUHAN UNIV OF TECH
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