Anti-deflection multilevel oil cylinder

The utility model discloses an anti-deflection multilevel oil cylinder. The anti-deflection multilevel oil cylinder comprises a guiding part, a multilevel cylinder part, an upper connection plate and a lower base plate. The guiding part comprises an inner guiding barrel, a middle guiding barrel and an outer guiding barrel. The multilevel cylinder part comprises an outer cylinder barrel, an inner cylinder barrel, a piston rod and a cylinder bottom, wherein the bottom of the inner guiding barrel is connected with a middle guiding barrel piston, and the bottom of the middle guiding barrel is connected with an outer guiding barrel piston. The inner wall of the outer guiding barrel and the inner wall of the middle guiding barrel are respectively and evenly distributed in the circumferential direction with at least three convex rib strips which extend in the axial direction. The outer wall of the outer guiding barrel piston and the outer wall of the middle guiding barrel piston are respectively provided with grooves which are matched with the convex rib strips. According to the anti-deflection multilevel oil cylinder, through the sliding match of the convex rib strips which are arranged on the inner wall of the guiding barrels and the grooves which are arranged in the guiding barrel pistons and matched with the convex rib strips, the oil cylinder is guided to move by utilizing the match between the convex rib strips and the grooves when in work, and thereby the deflection phenomenon of the oil cylinder in the process of moving is effectively prevented.