Cable joint detection test device

The invention discloses a cable joint detection test device which is characterized in that a lower fixing plate is arranged on a box body, four guide columns are arranged on the upper end face of the lower fixing plate, an upper fixing plate is arranged at the upper ends of the guide columns, a floating plate can move up and down on the guide columns, two rows of sleeves are arranged on the lower fixing plate, and an electrode connecting part is arranged at the top end of each sleeve. An electrode connecting part of each sleeve is respectively connected with a high-voltage adapter plate in the box body through a wire, two rows of plugs matched with the sleeves are correspondingly arranged on the floating plate, a row of telescopic cylinders corresponding to the sleeves are respectively arranged on the box body on the outer side of each row of sleeves, and a piston rod of each telescopic cylinder is respectively connected with a stress cone. The device can be used for detecting the insulation strength of the c