Main insulation grinding device for high-voltage cable

The invention relates to a main insulation grinding device for a high-voltage cable. The main insulation grinding device comprises a base, a cable supporting and locking device, a grinding executing mechanism, a grinding rotary motion driving mechanism and a grinding axial motion driving mechanism, wherein the cable supporting and locking device comprises a first support vertical frame and a cable locking mechanism; the grinding executing mechanism comprises two clamping blocks, an abrasive paper fixing part and grinding abrasive paper; the two clamping blocks are connected through four screws and are enclosed into an accommodating cavity through two V-shaped grooves; the abrasive paper fixing part is fixedly installed on one clamping block; the grinding abrasive paper is tightly attached and fixed to the inner end part of the abrasive paper fixing part; the grinding rotary motion driving mechanism comprises a rotary sleeve which is horizontally supported at the upper end of the second support vertical frame;