Hurdle for track and field

The hurdle comprises a bottom plate and a hurdle body, a fixing screw is connected into the bottom plate, a connecting block is installed at the upper end of the bottom plate, a tension spring is connected to the position, on the rear side of the fixing screw, of the upper end of the bottom plate, and a limiting screw is connected into the hurdle body. A rubber sleeve is arranged outside the hurdle and on one side of the limiting screw, a limiting nut is connected to the outside of the limiting screw and at the rear end of the hurdle, a lifting mechanism is connected to one end of the connecting block and comprises a sleeve movably connected to one end of the connecting block, a limiting groove is formed in the sleeve, and the limiting nut is connected to the limiting groove. A lifting rod is connected to the interior of the sleeve, a mounting screw is mounted at one end of the lifting rod, and a fixing nut is connected to the position, on one side of the limiting groove, of the exterior of the mounting screw