Cable tensile strength detection device

The utility model discloses a cable tensile strength detection device, and relates to the technical field related to cables. The device comprises clamping plates, limiting blocks, a movable frame and hydraulic cylinders, the two clamping plates correspond to each other up and down, the hydraulic cylinders are arranged at the four corners of the outer sides of the clamping plates, a piston rod is movably connected in each hydraulic cylinder, and a connecting block at the top end of each piston rod is fixed to the outer side of the upper clamping plate. And a connecting block at the bottom end of the hydraulic cylinder is fixed to the outer side of the lower clamping plate, clamping grooves are fixed to the tops of the two clamping plates, movable frames are symmetrically and movably connected into each clamping groove, a connecting sleeve is fixed to one side of each clamping plate, and a limiting block is arranged at the top of each connecting sleeve. By arranging the clamping plate, the limiting block, the m