DEVICE FOR CONTROLLING THE MOVEMENT OF A HYDRAULIC CYLINDER, PARTICULARLY FOR HYDRAULIC MACHINES

摘要

A control device includes a valve, having a body connected to the first chamber of a cylinder via a first hydraulic connection and to the second chamber of the cylinder via a second hydraulic connection. The control device includes a first hydraulic duct connected to a first actuating-fluid source, and a second hydraulic duct connected to a second actuating-fluid source. The hydraulic ducts communicate with the body of the valve. The valve further includes a distribution device that is movable within the body of the valve, between a first position, in which the distribution device places the first hydraulic connection and the first hydraulic duct in fluid communication, and a second position, in which the distribution device places the second hydraulic connection and the second hydraulic duct in fluid communication.

主权项

1. A control device controlling the movement of a hydraulic cylinder, comprising a body forming a first chamber and a second chamber which are designed to receive an actuating fluid, said chambers being separated from one another by a piston able to move in the body in a first direction in which the volume of the first chamber increases while the volume of the second chamber decreases, and in a second direction in which the volume of the second chamber increases while the volume of the first chamber decreases, the control device comprising a valve comprising a body connected to the first chamber of the cylinder by a first hydraulic connection and to the second chamber of the cylinder by a second hydraulic connection, wherein the valve further includes a first hydraulic duct intended to be connected to a first source of actuating fluid, and a second hydraulic duct intended to be connected to a second source of actuating fluid, said hydraulic ducts being in communication with the body of the valve, said valve further comprising a distribution device able to move in the body of the valve between a first position in which the distribution device places the first hydraulic connection and the first hydraulic duct in fluidic communication, and a second position in which the distribution device places the second hydraulic connection and the second hydraulic duct in fluidic communication.