Patent ID: 6571553
Filing Date: 2003-06-03
Classification: B66D,F15B,F16D,G05G

Abstract:
A hydraulic control arrangement for operating a winch (10) in the easing, hoisting and mooring mode, comprisingan adjustable hydraulic motor (12) to drive the winch (10), a proportionally adjustable directional control valve (35), spring-centered in a mid position, to control the flow paths of a pressure medium between a pressure medium source (25), the hydraulic motor (12) and a pressure medium supply container (26), a pilot controller (65) to control adjustment of the directional control valve (35) and of the hydraulic motor (12) and having a control lever (81) which is actuatable as desired and deflectable from a neutral position in one direction over a specific easing angle range (85) for easing at different speeds and deflectable in an opposite direction over a specific hoisting angle range (86) for hoisting at different speeds, and during a deflection of the control lever (81) over the entire hoisting angle range (86), the directional control valve (35) being fully opened and the hydraulic motor (12) being adjusted to a minimum absorption volume, and wherein the control lever (81), as viewed from the neutral position, is deflectable over a mooring angle range (87) on an other side of the hoisting angle range (86), and wherein with increasing deflection of the control lever (81) in the mooring angle range (87), the hydraulic motor (12) is adjusted in a direction of a greater absorption volume.