An adjustable body weight fraction load pull-up assisting device

Abstract

The invention discloses an adjustable weight fraction load pull-up booster, which comprises a main body steel frame, a cylindrical track, a support plate limiter, a support plate, a positioning pin of the support plate, a top buffer spring, a bottom buffer spring, a pull rod, Fixed pulley, power traction rope, resistance traction rope, adjustable fixed pulley. The two ends of the cylindrical track are connected to the main steel frame through flanges, and the bottom buffer spring, the track groove of the support plate limiter, the track groove of the pull rod, and the top buffer spring are installed on the cylindrical track from bottom to top; the front end of the support plate The guide rail plate is inserted in the support plate track of the support plate limiter, and the fixed pulley and the adjustable fixed pulley are installed on the main steel frame; the insertion position of the traction rope positioning pin in the upper limit hole of the adjustable fixed pulley can be increased or decreased Resistance The reaction force acting on the power rope to increase or decrease the pulling force required to complete the pull-up.

Description

technical field [0001] The invention relates to the technical field of pull-up auxiliary training devices, in particular to a pull-up assist device with adjustable weight fraction load. Background technique [0002] Pull-ups are a multi-joint compound movement exercise. It is a better way to exercise the upper limbs. Among all the exercises for developing back skeletal muscle strength and muscular endurance, it is the most involved muscle, the most complex movement pattern, and the most effective way to develop back skeletal muscles. The most effective training method for muscle strength and muscular endurance. [0003] For trainers with relatively weak back muscles, it is often difficult to complete a complete pull-up action, so corresponding assisting devices are needed to help them complete. However, traditional pull-up assisting devices are mainly divided into counterweight assisting and elastic band assisting. The former is difficult to overcome the influence of counte...

AI Technical Summary

Problems solved by technology

However, traditional pull-up assisting devices are mainly divided into counterweight assisting and elastic band assisting. The former is difficult to overcome the influence of counterweight acceleration on the trainer during exercise, and cannot provide stable and continuous assisting for the trainer, while the latter assisting follows the Hooke Law, in the process of completing the pull-up, the power gradually decreases, and these defects make it difficult for the trainer to quickly increase the strength of the back muscles even with the help of the power-assisted device

Images