METHOD OF CONTROL OF MULTI-SPACE HYDRAULIC CYLINDER Russian patent published in 2006 - IPC F15B15/16 

FIELD: fluid-actuated devices.

SUBSTANCE: method comprises supplying fluid into space (5) of hydraulic cylinder (1) for permitting its output link (8) to move in one direction and space (5) to be connect with the drain, when outlet link (8) moves backward. Upon the increase of the volume of space (5) of hydraulic cylinder (1) due to supplying fluid reaches a maximum, which corresponds to the movement of movable link (3) up to the stop that restricts the space, a portion of fluid in space (5) is excluded from the process of movement of output link (8) of hydraulic cylinder (1) by means of connecting space (5) with source (25) of high pressure that exceeds the maximum operation pressure required to overcome the external loading at output link (8) of hydraulic cylinder (1). When output link (8) of hydraulic cylinder (1) moves backward, working spaces of hydraulic cylinder (1) connected with source (25) of high pressure are disconnected from source (25) and are connected with drain (20).

EFFECT: improved quality of control.

1 dwg