Fabricated transformer substation component machining device applied to construction site

The invention discloses an assembly type transformer substation component machining device applied to a construction site, and relates to the technical field of transformer substation machining equipment. The cutter, the fixed shaft sleeve and the rack are arranged on the rack in a sliding mode in the first direction. The gear is coaxially and rotationally connected to the fixed shaft sleeve, notches matched with the cable are formed in the gear and the fixed shaft sleeve, and the gear is meshed with the rack; the V-opening cutter and the limiting and blocking rod are fixedly connected relative to the gear; the limiting and blocking rod is located on the sliding stroke of the cutter handle part; the guide piece is arranged on the rack in a sliding mode in the direction parallel to the axial direction of the cable, a guide sliding groove is formed in the guide piece and comprises a first inclined groove, a flat groove and a second inclined groove which are connected in sequence, and the cutter and the rack are