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Upper roller type top bar for hurdle rack

A cross-bar and roller-type technology, applied in sports accessories, racetracks, horse riding, etc., can solve problems such as easy collisions and injuries to athletes' inner ankles, and achieve the effect of avoiding or alleviating the buffering effect

Inactive Publication Date: 2011-05-11
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Currently, during training and official competitions, the overall wooden crossbar is generally used. Its hard upper edge is easy to collide and hurt the athlete's legs, feet, and inner ankles. This is a problem that has not been properly solved in the hurdle race practical problems

Method used

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  • Upper roller type top bar for hurdle rack
  • Upper roller type top bar for hurdle rack
  • Upper roller type top bar for hurdle rack

Examples

Experimental program
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Effect test

Embodiment Construction

[0015] The external shape and structure of the main body of the roller-type railing bar on the hurdle frame proposed by the present invention are as follows: figure 1 , figure 2 with image 3 shown. The upper end of the crossbar 1 is provided with a groove with a semicircular section, and the shaft seats 3 are arranged at intervals in the groove, and the shaft seats 3 are fixed on the top of the crossbar 1 with screws 7 . The shaft seat 3 is provided with the same through hole, and the shaft 5 is inserted into the through hole. Install the middle soft rubber roller 4 on the shaft 5 and between the shaft seats 3, install the rotatable cantilever soft rubber roller 2 on the shaft 5 and above the two ends of the crossbar 1, and use the elastic retaining ring 6 for the shaft (GB / T894. 2) It is stuck in the concave groove inside the two ends of the shaft 5 to realize the axial fixation of the cantilever soft rubber roller 2 and the middle soft rubber roller 4, such as image 3...

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Abstract

The invention relates to the field of sports equipment, in particular to a roller type top bar for a track and field hurdle rack. The upper end of a bar (1) in the top bar is provided with a groove of which the cross-section is in a semicircular shape; a plurality of shaft seats (3)are arranged in the groove; through holes are arranged at the same positions of the shaft seats(3); shafts (5) are fixedly arranged in the through holes; and soft rolls (2) and (4) capable of free rotating around the shafts(5) are arranged on the shafts(5). The external dimensions of integrating the bar (1) and thesoft rolls (2) and (4) are no greater than the dimensions of the top bar determined by a current rule. Repeated and practical use of the roller type top bar for the track and field hurdle rack shows that the strength of the roller type top bar can meet the requirements on deformation and fracture resistance, and that the roller type top bar for the track and field hurdle rack is suitable for smooth rolling resolving power and buffering power on material soft rolling rubber to avoid or relieve the injuries to legs, feet and inner ankles of athletes.

Description

technical field [0001] The invention relates to the field of sports equipment, in particular to a roller-type top bar used on a track and field hurdle frame. technical background [0002] The current "Athletics Competition Rules 2008" stipulates: "The hurdles are made of wood or other suitable materials on the top of the hurdles. The dimensions of the top of the hurdles: 1.18~1.20*0.07*0.01~0.025m. On the top of the hurdles The edges should be smooth, and the two ends should be fixed.” At present, during training and official competitions, rail top crossbars made of wooden materials are generally used. The practical problems that have plagued the hurdle race project have not been properly resolved so far. [0003] There are also the following forms of crossbars on the top of the hurdles used in hurdles: crossbars with rubber outsourcing, capsule inflatable types, vertical shafts at both ends with middle disconnection, crossbars with rubber strips, etc., but they have not be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A63K3/04
Inventor 左洪志左维
Owner YANSHAN UNIV
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