Hydraulic flow control system and method and crane

• Main Authors: YANG YAOXIANG, WANG YONGHENG, YAO XINLIANG
• Format: Patent
• Language: Chinese; English
• Published: 16.12.2022
• Subjects: BLASTING; CRANES; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR; FLUID-PRESSURE ACTUATORS; FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS; HAULING; HEATING; HOISTING; HYDRAULICS OR PNEUMATICS IN GENERAL; LIFTING; LIGHTING; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; TRANSPORTING; WEAPONS

The invention provides a hydraulic flow control system and method and a crane, and relates to the technical field of hydraulic control, the system comprises a variable pump, execution mechanisms, control valves, handles and a controller, the multiple execution mechanisms are connected with the variable pump through the multiple control valves respectively, the multiple handles are used for being associated with the multiple execution mechanisms respectively, and the controller is connected with the multiple handles. The opening degree of the handle is positively correlated with the flow required by the corresponding executing mechanism; and when the single-action mode is selected, the controller controls the opening degree of the valve port of the corresponding control valve to be fully open, and controls the corresponding handle to be associated with the corresponding executing mechanism. When the combined action mode is switched into the single action mode, the controller can directly calculate the flow req