Composite carbon fiber oil cylinder with oil on inner hole of piston rod

Abstract

The invention provides a composite carbon fiber oil cylinder with oil on an inner hole of a piston rod, belongs to the technical field of hydraulic cylinders, and aims to provide a carbon fiber oil cylinder which meets the design requirement on inner bore precision, geometric tolerance and degree of finish of a cylinder barrel and works stably under high pressure. According to the technical scheme, the cylinder barrel is formed by winding composite carbon fibers and nano materials; threads which are formed by winding composite carbon fibers and nano materials are respectively arranged at two ends of a cylinder cover; threads are also arranged at connecting ends of a cylinder bottom, the cylinder cover and the cylinder barrel; the piston rod of the piston rod assembly is a hollow tube; an oil cylinder reverse cavity inlet allowing the piston rod to withdraw is formed in one end, which is close to the cylinder bottom, of the piston rod; and an oil cylinder forward cavity inlet allowing the piston rod to extend out is formed in the other end, which is close to the cylinder cover, of the piston rod. The invention is applied to the carbon fiber hydraulic cylinder.

Description

technical field [0001] The utility model relates to a composite carbon fiber oil cylinder with oil through the inner hole of a piston rod, which belongs to the technical field of hydraulic oil cylinders. Background technique [0002] Lightweight design is a development direction of hydraulic cylinders. The most fundamental advantage of composite carbon fiber cylinders is that they greatly reduce the weight of components and enhance their load performance. The original technology is a carbon fiber cylinder without lining. In the process of composite carbon fiber winding, the control of the deformation of the inner hole of the cylinder and the dimensional accuracy and roughness of the inner hole after winding cannot meet the design requirements, and cannot withstand high pressure; when After the metal lining is added to the inner hole of the carbon fiber cylinder, when the cylinder is under high pressure, the expansion coefficients of the metal lining and the non-metallic carb...

AI Technical Summary

Problems solved by technology

The original technology is a carbon fiber cylinder without lining. In the process of composite carbon fiber winding, the control of the deformation of the inner hole of the cylinder and the dimensional accuracy and roughness of the inner hole after winding cannot meet the design requirements, and cannot withstand high pressure; when After the metal lining is added to the inner hole of the carbon fiber cylinder, when the cylinder is under high pressure, the expansion coefficients of the metal lining and the non-metallic carbon fiber cylinder are inconsistent, which may easily cause the metal lining to peel off from the carbon fiber cylinder, so the manufacturing meets the design requirements and high pressure use The composite carbon fiber cylinder is a difficult problem

[0003] The advantages of composite carbon fiber are light weight, non-magnetic, non-corrosive and non-expandable. The disadvantage of composite carbon fiber is that it has no weldability and weak connection strength. How to avoid oil port winding and welding of connection parts has become another problem in the design of carbon fiber cylinders.

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