Tension device

The utility model discloses a tension device, and particularly relates to the field of surgical rehabilitation nursing, which comprises a tension frame, the bottom of the tension frame is fixedly connected with a support table, the upper part of the support table is fixedly connected with a counterweight device, the counterweight device comprises a counterweight box, the bottom of the counterweight box is provided with a counterweight block, a fixed rod penetrates through the interior of the counterweight block, and the fixed rod is fixedly connected with the support table. A fixing clamping block is fixedly connected to the upper portion of the fixing rod, a steel bar is movably connected to the interior of the balancing weight, and a rolling wheel is movably connected to the upper portion of the weight box. By arranging the counterweight device, when a patient carries out rehabilitation training, a steel bar can be inserted into a non-through counterweight block to connect the fixing rod with the fixing blo