Hydraulic cylinder lightweight piston rod with composite structure and preparation method thereof

The invention relates to a hydraulic cylinder lightweight piston rod with a composite structure and a preparation method thereof. The piston rod comprises a rod head (1), flange bushings (2), a carbon fiber composite rod body inner layer (3), a rod body outer lining (4) and a shaft head (5), the flange bushings (2) are pre-buried at the two ends of the carbon fiber composite rod body inner layer (3) and integrally cured and formed along with the carbon fiber composite rod body inner layer (3), and the rod body outer lining (4) is fixedly arranged on the carbon fiber composite rod body inner layer (3) in a sleeving mode. And the rod head (1) and the shaft head (5) are fixed on the flange bushings (2) at the two ends of the carbon fiber composite rod body inner layer (3) through threads. An inverted pulling structure and an annular groove are arranged at the corresponding positions of the flange lining (2) to prevent the flange lining (2) from falling off together. Compared with an existing ...