Chin-up Training Bar

According to The Criterion of Serviceman's Physical Fitness,Chin-up is one of the main training subjects for building up the physical strength.Though easy to perform,it is a high demanding for our upper limbs' perfect strength.Therefore,the passing ratio is comparatively low in the examination.In terms of various problems in the training,this essay analyzes the traditional chin-up training equipment and designs the manufacturing of multiple-person chin-up training bar,so as to guarantee the scientific and efficient strength training in the grass-roots forces.