Optical synchronization standing long jump testing device

Abstract

The invention belongs to the technical field of sports equipment, and particularly relates to a light synchronization standing long jump testing device which comprises a landing plate, a take-off plate is mounted in the landing plate, sliding grooves are formed in the bottoms of the landing plate and the take-off plate, first folding rods are mounted in the landing plate and the take-off plate, and the first folding rods are rotationally connected with second folding rods through rotating shafts. The first folding rods and the second folding rods are rotationally connected with the bottom end of the landing plate through a main shaft, the bottom ends of the second folding rods are connected with a sliding block, the sliding block is located in a sliding groove, the sliding groove is slidably connected with the sliding block, infrared sensors are fixed to the two sides of the top end of the landing plate, expansion blocks are arranged at the two ends of the nail body, and an extrusion groove is formed in the lower portion in the nail body. A limiting groove is formed in the upper portion of the interior of the nail body, an expansion nail is installed in the nail body, a rotary knob is fixed to the top end of the expansion nail, and the problems that an existing long jump testing device is large in size and inconvenient to carry are solved.

Description

technical field [0001] The invention belongs to the technical field of sports equipment, and in particular relates to an optical synchronous standing long jump testing device. Background technique [0002] The standing long jump is a traditional track and field event that was an Olympic event before 1912. The difference between the standing long jump and the general long jump is that the standing long jump requires the athletes not to use the run-up, but to take off from the standing position. They are only allowed to leave the ground once during the jump, otherwise it is considered a foul. The traditional standing long jump mostly uses a sand pool site, which is very laborious both in establishment and later maintenance. At the same time, the traditional standing long jump results are mostly measured manually, and there are large errors in the measured results. The current long jump test device is large in size. It is inconvenient to carry, and it is placed directly on the...

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