Hydraulic control arrangement for controlling a variable fluid volume flow

A hydraulic control system for controlling a variable fluid volume flow to a consumer (6, 60, 94, 126, 146, 162) with a hydraulic pilot-controlled control valve connected to a fluid supply, the hydraulic control system comprising:

• an independent first control valve (2, 56, 90, 122, 142) being designed such that the first control valve (2, 56, 90, 122, 142) delivers a specified initial volume flow (Q1), in an absence of a variable pilot control pressure (pVST), the first control valve (2, 56, 90, 122, 142) delivers a continuously increasing volume flow (QK) as the variable pilot control pressure (pVST) increases, and
• at least one independent second control valve (170) which is a hydraulic pilot-controlled control valve (170), and the second control valve (170) being activated in a specified range (55, 88, 120, 132, 140, 152) of the variable pilot control pressure (pVST).

A hydraulic control system for variably controlling a volume of fluid flowing to a consumer (6), the control system comprising:

• a first control valve (2) being connected to a fluid supply (4) and hydraulically controlled by a pilot control pressure (pVST) such that the first control valve (2) directs an initial volume of fluid flow (Q1) to the consumer (6) when the pilot control pressure (pVST) is not supplied to the first control valve (2), and the first control valve (2) directs an increasing volume of fluid flow (QK) to the consumer (6) when the first control valve (2) is subject to an increasing volume of the pilot control pressure (pVST);
• and
• at least one second control valve (170) being activated by the pilot control pressure (pVST) when the pilot control pressure (pVST) is within a specified range (55).