METHOD AND DEVICE FOR CONTROLLING SECONDARY HOISTING OF CRANE WINCH

摘要

Disclosed is a method for controlling secondary hoisting of a crane winch. The method comprises: recording a pressure of a winch motor when a crane winch performs hoisting; detecting a current pressure of the winch motor when the crane winch performs secondary hoisting; comparing the current pressure with the recorded pressure of the winch motor; and if the current pressure of the winch motor is less than the recorded pressure of the winch motor, braking a winch mechanism, and pressurizing a hoisting loop of the winch motor so that the current pressure is not less than a preset pressure, the preset pressure being determined according to the recorded pressure of the winch motor. The method improves the power utilization efficiency and the control effect of the secondary hoisting control of the crane winch, and reduces the manufacturing cost of equipment. Also disclosed is a device for controlling secondary hoisting of a crane winch.