METHOD AND SYSTEM FOR A HYDRAULIC CYLINDER

摘要

A system and method of operating a scissors lift assembly are provided. The system includes a hollow piston rod including an internal fluid reservoir, a cylinder body that is coaxial with and at least partially surrounding the hollow piston rod, and a fluid pump in flow communication with the reservoir through a suction channel extending from the internal fluid reservoir though a transfer tube to a suction port of the fluid pump. The transfer tube is coaxial with the piston, the piston rod, and the cylinder body and a discharge port of the fluid pump is in flow communication with an extension pressure chamber.