A high-performance carbon fiber composite piston rod and its preparation method

Abstract

The invention discloses a high-performance carbon fiber composite piston rod. The piston rod comprises a piston joint, a piston rod body and a thrust rod joint connected through pins in sequence fromleft to right; the piston rod body consists of an inner piston body, and an outer piston body sleeved in the inner piston body; the inner and outer surfaces of the piston joint and the thrust rod joint are in contact connection; the inner surfaces of the piston joint and the thrust rod joint are conical; and taper angles are 2-45 degrees. Through reasonable design of novel connecting mode of the fiber direction of a composite material combined with a double-surface small-angle inclined surface to cooperate with embedded pins, the connecting strength and reliability of an adapter and a rod bodyare greatly improved, and meanwhile, the weight of the whole structure of the piston rod is effectively reduced.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to a high-performance carbon fiber composite piston rod and a preparation method thereof. Background technique [0002] The actuator, also known as the hydraulic cylinder, is a common type of actuator in the hydraulic transmission system, which is used to realize the linear reciprocating motion of the working mechanism or the energy conversion device that is less than 360 degrees. Actuators are widely used in landing gear, flaps, thrust reversers and other aircraft devices and bogies of large passenger cars. The actuator is mainly composed of cylinder body, piston rod, end cap and other components, and the piston rod is the main moving part. [0003] At present, most of the piston rods are made of steel. With the continuous improvement of aircraft lightweight requirements and the rise of new energy vehicles, the severe weight reduction requirements for auto parts, the applicatio...

AI Technical Summary

Problems solved by technology

[0006] (1) Since the end of the piston rod needs to be connected with other components, metal adapters need to be installed at both ends. In general schemes, the metal adapter and the rod body are cemented on one side, and the piston rod is prone to failure during reciprocating motion.

[0007] (2) The connection between the general metal joint and the composite material rod body will be exposed outside the piston rod, which will affect the appearance quality

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