Hydraulic oil cylinder

The utility model belongs to the technical field of hydraulic oil cylinder bodies, and particularly relates to a hydraulic oil cylinder which comprises a hydraulic oil cylinder body and a shell body, and a first through hole and a groove are formed in the shell body. Through the arrangement of the storage box, the through groove and the scraping blade, the storage box is placed in the groove, the scraping blade is in lap joint with the surface of the piston rod of the hydraulic oil cylinder body, the piston rod extends out of the cylinder body to work under the pushing of high-pressure oil, and the piston rod is prevented from falling off in the process of recycling after work is finished. Dust and the like attached to the surface of the piston rod are scraped off through the scraping blade, dirt obtained after scraping off enters the storage box through the through groove to be stored, and therefore the influence of the dust on the service life of the hydraulic oil cylinder body is reduced; and through the a