... the horizontal jib frame, trolleying structure, slew on the top tower crane. It adopts the double wire windi QTZ125 (TC6014A) is ... the horizontal jib frame, trolleying structure, slew on the top tower crane. It adopts the double wire winding electromotor series resistance ... is Q345B, the weight is light, wind resistance is small, the stability is high. The tower crane foundation may be press heavily ...