Hydraulic slide valve control for working cylinders with...

Details Hydraulic slide valve control for working cylinders with... Hydraulic slide valve control for working cylinders with...

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 21/00 (2006.01) F15B 11/044 (2006.01)

Patent

CA 2092657

HYDRAULIC SLIDE VALVE CONTROL FOR WORKING CYLINDERS WITH UNEQUAL PISTON SPEEDS ABSTRACT In a hydraulic slide valve control for working cylinders with unequal piston speeds, in which the volume stream of the hydraulic working medium that loads the piston is adjusted to the prevailing piston speed and the direction of motion of the piston is set with a pilot-operated distribution valve, it is provided according to the invention that the redirecting valve (?3) is hydraulically pilot-operated with a pilot valve (A), which is adjustable by the control impulses for the working cylinder (1) and that between the pilot control paths (11, 12) from the pilot valve (A) to the redirecting valve (?3) a hydraulically pilot- operated control valve (B) is installed, through which runs one of the two volume streams of the hydraulic working medium where a piston speed is assigned to each position of the control valve (B).

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