An electric winch

• Main Authors: KATSUSHI IIJIMA, MASAHIRO OTSUKI
• Format: Patent
• Language: Chinese; English
• Published: 04.01.2017
• Subjects: CAPSTANS; CRANES; HAULING; HOISTING; HOISTS; LIFTING; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES; PERFORMING OPERATIONS; TACKLES, e.g. PULLEY BLOCKS; TRANSPORTING; WINCHES

The invention provides an electric winch with two winching sensing motors. Even one of the two winching sensing motors breaks down, operation can continue automatically. The electric winch comprises two sensing motors used for performing ascending and descending movement; an inverter used for driving the two sensing motors; an encoder generating pulses corresponding to the rotating speeds of the two sensing motors; current sensors used for detecting the respective currents of each phase of the two sensing motors; an inverter controller which detects whether any of the two sensing motors breaks down according to the rotating speeds detected by the encoder and the current values detected by the current sensors, and when detecting that one of the two sensing motors breaks down, controls the inverter to make the sensing motor with no fault detected run only. 本发明提供种具备2台卷扬感应电动机的电动卷扬机，即使2台卷扬感应电动机中的方发生故障，也能够自动地继续运转。电动卷扬机的特征在于，包括用于进行起升和下降动作的2台感应电动机；用于驱动所述2台感应电动机的逆变器；与所述2台感应电动机的转速相应地生成脉冲的编码器；用于检测所述2台感应电动机的各相各自的电流的电流传感器