Step type cable bridge

The utility model relates to the technical field of bridge equipment, in particular to a step type cable bridge which comprises side frames, fixed crosspieces and movable crosspieces. The number of the side frames is two, and the two side frames are fixedly connected through the multiple fixing crosspieces arranged side by side. The movable crosspiece comprises a crosspiece frame body, a pull rod,a sliding block, a linkage plate and an adjusting screw rod; the lower ends of the two side frames are respectively provided with a plurality of crosspiece sliding grooves which are arranged side byside. The inner sides of the multiple crosspiece sliding grooves are each connected with one crosspiece frame body in a sliding fit mode. The multiple crosspiece frame bodies and the multiple fixed crosspieces are arranged in a staggered mode at intervals. The cable bridge can be used as a stepped cable bridge for supporting and placing a single row of cables in a conventional state; when the number of the stepped cable br