Device for cable installation

The invention provides a device for cable installation, and belongs to the technical field of electromechanical construction. According to the technical scheme, the device comprises a clamping assembly, an inner supporting assembly and a tension spring; the clamping assembly comprises a ring body clamped on the outer side of the cable, and the ring body is formed by splicing two semi-circular ring bodies; the inner supporting assembly comprises a fixing disc, a rubber block is concentrically arranged at one end of the fixing disc, a round rod is arranged at the other end of the fixing disc, a positioning disc is concentrically arranged on the round rod, three outer supporting rods are evenly distributed on the fixing disc in the circumferential direction and rotationally arranged on the fixing disc, and when the outer supporting rods are rotated, the outer ends of the outer supporting rods can be close to or away from the center of the fixing disc. Three adjusting rods in one-to-one correspondence with the ou