Crane main hook device provided with lifting capacity limiter

The utility model provides a crane main hook device provided with a lifting capacity limiter, and belongs to the field of lifting equipment. The crane main hook device comprises a main hook roller (3) and a main hook rotary shaft (5), wherein a steel cable (6) winds around the main hook roller (3) and the main hook rotary shaft (5) is coaxially fixed to the main hook roller (3). The crane main hook device is characterized in that the lifting capacity limiter connected with a control circuit of a crane is arranged, and the main hook rotary shaft (5) penetrates through the lifting capacity limiter. Due to the fact that the lifting capacity limiter is arranged on the crane, the crane main hook device can prevent the overweight phenomenon of the crane in the lifting process, and safety hidden risks in the production process are eliminated. Meanwhile, the service life of the whole crane is greatly prolonged, production cost and maintenance cost are saved, and the crane main hook device has the advantages of being