SU1286830A1 - Electrohydraulic drive - Google Patents

Abstract

The invention relates to electro-hydraulic control systems. The aim of the invention is to expand the scope. The drive contains a switch that controls the flow of signals to the electromagnetic coils 13–13 spanning the tube 7 with the piston 8, which is hydraulically connected to the cavity of the hydraulic cylinder. 1 il.

Description

/ 7

q c and o yoro o o o o o o ioo

(L

 oh oh oh ohhh

AND

72 U

to

00 O) 00

with

W

eleven

The invention relates to electro-hydraulic systems and can be used as a drive actuators with rotational or translational movement of the working bodies.

The aim of the invention is to expand the scope.

The drive circuit is shown in the drawing.

The drive includes a hydraulic cylinder 1 with an output rod 2, a driver 3, a multi-contact switch 4 connected to a power source 5, a distributor 6, made in the form of a non-ferromagnetic guide tube 7, inside of which measles-gap 8 is placed. Ends The pipes through hydraulic lines 9 and 10, in which chokes 11 and 12 are installed, are connected to the cavities of the hydraulic cylinder. On the outer surface of the pipe 7 are placed electro

magnetic coils 13–13 ,, coupling-holding hydraulic cylinder defining oral switches 4 with the outputs. A device made in the form of a multi-conductor can be equipped with a transducer for moving the rod 2 into a rotary one.

The drive works as follows.

Current from power supply 5 post30

a clock switch connected to a power source and a valve, characterized in that, in order to expand the scope of application, the valve is designed as a non-ferromagnetic guide tube, on the outer surface of which electromagnetic coils connected to the multi-contact switch outputs are placed inside the pipe measles-piston, and the ends of the pipe are connected by hydraulic lines, in which throttles are installed, with a cavity of hydraulic cylinder

it goes to the contacts of the switch 4, which are the outputs of the switch, and from them to the electromagnetic coils 13. The arising magnetic field of each of the coils 13, | - 13, alternately acts on the measles-piston 8 and advances it, for example, first to the right. When this working fluid flows through the hydraulic conduit 10, the throttle 12 and

0

five

0

presses on the piston of the hydraulic cylinder, which moves the rod 2, the working fluid displaced by the piston, through the hydraulic conduit 9 and the throttle 11 enters the pipe 7. The throttle is fully open and the throttle 12 is partially blocked.

When the koron-piston has reached the extreme right position, the diverter directs current to the coils, which pull the piston in the opposite direction (from right to left). In this case, the throttle 12 opens completely, and the throttle II closes partially to a predetermined cross section. This is done to adjust the movement of the rod. Further, the working fluid in the hydraulic system circulates in the opposite direction.

Claims (1)

The invention of the electro-hydraulic actuator containing a hydraulic cylinder, a master device made in the form of a multi-cylinder a clock switch connected to a power source and a valve, characterized in that, in order to expand the scope of application, the valve is designed as a non-ferromagnetic guide tube, on the outer surface of which electromagnetic coils connected to the multi-contact switch outputs are placed inside the pipe measles-piston, and the ends of the pipe are connected by hydraulic lines, in which throttles are installed, with a cavity of hydraulic cylinder