Power cable mounting rack

The invention discloses a power cable mounting rack, and relates to the technical field of cable supports, the power cable mounting rack comprises a cable mounting rack, the left and right sides of the cable mounting rack are provided with semicircular grooves, the front side of the cable mounting rack is movably connected with a fixing mechanism, and the bottom of the cable mounting rack is provided with a rotating support. The bottom of the rotating support is fixedly connected with a mounting bottom plate, and the left side and the right side of the mounting bottom plate are each provided with a vertically-through mounting hole. When a cable is fixed, the cable is placed in a semicircular groove, a bevel gear I can be driven to rotate through a knob, a bevel gear II can drive a threaded rod to rotate, so that a sliding sleeve plate slides, and an annular sliding plate can be blocked outside the semicircular groove under the pushing of a sliding pull plate; therefore, the cable in the semicircular groove ca