Limiting protection method for 5G electric shovel lifting mechanism and 5G electric shovel

The invention discloses a 5G electric shovel lifting mechanism limiting protection method and a 5G electric shovel. The 5G electric shovel lifting mechanism limiting protection method comprises the steps that the relation between an encoder signal and the position of a bucket is calibrated; a limiting threshold value is set, and when the bucket position represented by a signal fed back by the encoder reaches the limiting threshold value, a limiting protection interval is entered; the limiting protection area comprises a lifting limiting protection interval and a lowering limiting protection interval; the lifting limiting protection interval is divided into a plurality of stages, and each stage of limiting protection interval corresponds to one bucket driving torque; and the moments are gradually reduced from large to small. The lowering limiting protection interval is divided into a plurality of stages, and each stage of limiting protection interval corresponds to one bucket driving torque; and the moments ar