High-voltage cable tightness adjusting device for power engineering and implementation method of high-voltage cable tightness adjusting device

The invention relates to the technical field of cable processing, in particular to a high-voltage cable tightness adjusting device for power engineering. The high-voltage cable tightness adjusting device comprises a hollow support, wherein a lifting frame capable of lifting is arranged in the interior of the hollow support; a plurality of pay-off reels arranged side by side are arranged at the topof the lifting frame; cables are respectively arranged in each pay-off reel; a tightness adjusting mechanism is arranged at one end of each pay-off reel; a fixing mechanism is arranged at one end ofthe lifting frame and provided with fixing through holes corresponding to the tightness adjusting mechanisms one by one; one end of each cable extends outwards through the corresponding tightness adjusting mechanism and a corresponding fixing outlet; lifting mechanisms are respectively arranged on the two sides of the hollow support; a synchronous driving mechanism is arranged at the top of the hollow support; and the outp