Tow chain cable repeated bending test device

The utility model relates to a bending test device, in particular to a drag chain cable repeated bending test device. The objective of the utility model is to provide the drag chain cable repeated bending test device capable of controlling the motion stroke. A drag chain cable repeated bending test device comprises a first supporting block, a second supporting block, first clamping blocks, a first return spring, a third supporting block and a rotating shaft, the second supporting block is arranged on one side of the first supporting block, and the first clamping blocks are symmetrically arranged on one side of the first supporting block in a sliding mode. A first return spring is connected between the first clamping block and the second supporting block, a third supporting block is arranged on one side of the second supporting block, and a rotating shaft is rotationally arranged on the third supporting block. The cable clamping device has the beneficial effects that people make contact with the first clamping