Machinery & Energetics

The analysis of the application of modern aggregates with electrical control in various machines, both of the agro-industrial complex, and in other branches of the national economy is performed. A scheme is proposed and the design of a special monoblock hydraulic directional control valve GR20-24E with electrohydraulic control is developed. In the second stage, the cartridge version of the power cascade of the hydraulic directional control valve was used, which made it possible to simplify the design, improve maintainability and reduce the overall dimensions and mass of the hydraulic part. The first cascade of control of the hydraulic directional control valve the spool is made in the form of two choke-like "ball-saddle" slots, in which the position of the balls is controlled by electromagnets. This execution of the control system is characterized by simplicity, impossibility of jamming, lack of friction and the possibility of obtaining small strokes, which provides a higher reliability and power reduction for controlling the electromagnets. As a result of the research and development work created electro-hydraulic directional control valve in a monoblock design. The use of the cartridge type switchgear and the application in the pilot section of the throttle gap distributor with the ball locking element allowed to simplify the design of the hydraulic hydraulic directional control valve, increase its reliability and reduce the dimensions and mass

hydraulic directional control valve, cartridge version, electromagnet, pilot part, reliability