Hydraulic cylinder design and device for centering deviation-rectifying system

Abstract

The invention relates to a cylinder design and a cylinder device used in a CPC steering unit. Two cylinder barrels of the same size are symmetrically arranged on both of the left end and the right end of a cylinder block (1); and the circular holes of the two cylinder barrels keep concentric; oil inlets arranged on the cylinder barrels are communicated with piston cavities; a common piston rod (2) is arranged in the two cylinder barrels; a piston (3) and a piston rod are a whole structure which is matched through a seal ring (5); the outer ends of the cylinder barrels are sealed by blind flanges (4), and seal rings for sealing are arranged on the blind flanges; the inner ends of the cylinder barrels are sealed by dust covers (6); and dust rings (7) for sealing are arranged on the dust covers. The piston and the piston rod can be made into a split structure for coordination installation. The invention has the advantages that: the cylinder is provided with two identical piston cavities, thereby the oil cavities have large effective areas; the radial sizes of the piston and the cylinder barrels are relatively small under certain load and oil sources pressure; the piston rod with good rigidity is provided with two motion support points and plays a guiding role, and contributes to the stability of deviation rectification and the improvement of control precision due to the uniform and stable resistance encountered.

Description

A hydraulic cylinder design and device used in centering and deviation correction system technical field The invention belongs to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder design and device used in a centering and deviation correction system. Background technique Hydraulic cylinders have been widely used in various centering and deviation-correcting actuators. The centering and deviation-correcting actuators mainly face symmetrical loads, and hydraulic cylinders are required to have symmetrical motion behavior in two directions of motion. In the prior art, a double-piston-rod hydraulic cylinder is commonly used to solve symmetrical loads. The double-piston rod hydraulic cylinder only uses the rod cavity to work, and does not use the entire area of ​​the piston, so there is a disadvantage that the effective area is relatively small. Under the condition of a certain load and oil source pressure, the diameter of the hydraulic cylinder ...

AI Technical Summary

Problems solved by technology

The double-piston rod hydraulic cylinder only uses the rod cavity to work, and does not use the entire area of ​​the piston, so it has the disadvantage of relatively small effective area. Under the condition of constant load and oil source pressure, the diameter of the hydraulic cylinder piston and cylinder relatively large in size

Images