Safety hurdle for track and field

Abstract

The invention discloses a safety hurdle for track and field. The safety hurdle comprises bases, elastic connecting rods are arranged in the middles of the upper sides of the bases, supporting rods are arranged at the upper ends of the elastic connecting rods, and vertical rods are arranged at the upper ends of the supporting rods. A plurality of adjusting grooves are formed in the inner sides of the vertical rods, adjusting cavities are formed in the upper portions of the inner sides of the supporting rods, and sliding blocks matched with the adjusting grooves are arranged in the adjusting cavities. The outer ends of the sliding blocks are connected with telescopic rods, and reset springs are arranged on the telescopic rods. First cavities are formed in the middles of the lower sides of the bases, electric telescopic rods are arranged in the first cavities, movable plates are arranged at the lower ends of the electric telescopic rods, and a plurality of locating columns are arranged on the lower sides of the movable plates. Second cavities are formed in the left end and the right end of the lower side of each base, struts are arranged in the second cavities, and fixing devices are arranged at the lower ends of the struts, and comprise boxes and suction cups. The safety hurdle is simple in structure, convenient to use, wide in application range and high in safety, and height adjustment is convenient.

Description

technical field [0001] The invention relates to the technical field of sports training devices, in particular to a safety hurdle for track and field. Background technique [0002] Hurdles are one of the sporting goods that students often use in physical education classes, but hurdles are dangerous, and users are likely to trip over the crossbars, causing users to be injured. Patent No. 201620050493 is a new type of hurdle. The upper cross bar is hinged on the right vertical bar through a rotating shaft. A spring and a connecting rod are arranged in the accommodation groove of the upper cross bar. The right end of the connecting rod is fixedly connected with the spring. The left end is fixedly provided with a first magnetic substance, and the outer surface of the left vertical bar is fixedly provided with a second magnetic substance. During specific use, the operator first attracts the first magnetic substance and the second magnetic substance together, and then the athlete c...

AI Technical Summary

Problems solved by technology

[0002] Hurdles are one of the sporting goods that students often use in physical education classes, but hurdles are dangerous, and users are likely to trip over the crossbars, causing users to be injured

Patent No. 201620050493 is a new type of hurdle. The upper cross bar is hinged on the right vertical bar through a rotating shaft. A spring and a connecting rod are arranged in the accommodation groove of the upper cross bar. The right end of the connecting rod is fixedly connected with the spring. The left end is fixedly provided with a first magnetic substance, and the outer surface of the left vertical bar is fixedly provided with a second magnetic substance. During specific use, the operator first attracts the first magnetic substance and the second magnetic substance together, and then the athlete can It is used like a common hurdle, if the athlete's foot touches the upper crossbar or the connecting rod, the first magnetic substance and the second magnetic substance will be separated under the impact force, and then the connecting rod will be retracted to the capacity under the action of the spring. In the groove, since the length of the crossbar is shorter than that of ordinary hurdles, and the crossbar will rotate under the impact force, the athletes are not easy to be tripped by the crossbar, although this structure can place the athletes to a certain extent No tripping, but the base is only composed of a support rod. When the athlete hits the crossbar, the vertical rod is easy to shift or even fall due to the impact force. Not only will it hit the athlete, but also need to be placed again. Low security, troublesome to use

Images