Low-noise high-strength electric single-beam suspension crane

The utility model discloses a low-noise high-strength electric single-beam suspension crane which comprises a main beam, a sliding groove is formed in the middle of the main beam, the sliding groove penetrates through the whole main beam, a pulley block is arranged in the sliding groove and fixedly connected with a take-up box, and a take-up rotating shaft is arranged in the take-up box. The take-up rotating shaft penetrates through the inner wall of the take-up box and extends to the outside, fixing rods are arranged on the two sides of the main beam, the fixing rods are each sleeved with a pulley, the pulleys are placed in the sliding rails, bearings are arranged in the through holes, two baffles are arranged in the take-up box, the take-up rotating shaft penetrates through the two baffles, and a driving motor is arranged on the other side of the take-up box. The driving motor is placed on the top of the bottom plate, the weight of an object hoisted by the crane can be sensed through the pressure sensor ins