HYDRAULIC CYLINDER (VERSIONS) Russian patent published in 2009 - IPC F15B15/16 

FIELD: mechanics.

SUBSTANCE: proposed hydraulic cylinder comprises casing representing cylinder closed on both sides with covers, con rod with piston, the said con rod being made in the form of cylindrical barrel with bottom. The first cover incorporates through circular cut separating the first cover into two, inner and outer, parts. The first cover is arranged between the con rod and piston, while the con rod cylindrical surface passes through aforesaid cylindrical cut in the first cover. The first cover inner part is fixed relative to the casing by three hollows tubes oriented along the casing inner cylindrical surface and passing through the piston holes. Note here that one end of each tube is rigidly connected with the second end face cover and closed tightly, while the open end passes through the holes of the first cover and extends over to the first cover side facing the con rod inner part. Note also that each pipe is rigidly jointed to the first cover inner part. In compliance with the second version, the hole to discharge/feed working fluid is arranged in the second cover and communicates with the inner space of every tune via channels made in the second cover.

EFFECT: compact and simple design.

5 cl, 4 dwg