Cable crane applied to four-main-cable suspension bridge

A cable crane applied to a four-main-cable suspension bridge comprises a main beam, two walking mechanisms, two traction systems and two lifting systems. Wherein the main beam is of a truss steel member structure, the two walking mechanisms are connected to shaft holes in the two ends of the main beam in a hinge joint mode through pin shafts, the two traction systems are symmetrically fixed to the upper end face of the main beam, and the two lifting systems are fixed to the lower end face of the main beam on the left side and the right side respectively. According to the four-main-cable suspension bridge, the two end beams, the walking wheels of the two end beams, the pressure-bearing clasping devices and other structures are independently arranged on the two walking mechanisms, operation such as walking, traction, fixing and hoisting of the four-main-cable suspension bridge is completed, a mature and reliable hoisting scheme is provided for a four-main-cable system, the technical blank of the four-main-cable