Pull-ups training device

Abstract

The invention relates to a pull-ups training device, which comprises four cylinder bodies which are vertically and sequentially arranged from left to right, wherein a piston which can slide up and down in the cylinder body is arranged in each cylinder body, and a piston rod which vertically extends upwards is connected onto each piston; an airtight chamber for containing fluids is formed in the space of each cylinder body under the corresponding piston, the space above the corresponding piston is communicated with the outside, and each chamber is filled with the fluids; the bottoms of the chambers of the two cylinder bodies positioned at the left side are communicated with each other, and the bottoms of the chambers of the two cylinder bodies positioned at the right side are communicated with each other; the tops of the piston rods of the two cylinder bodies positioned in the middle part are fixedly connected with a support plate; and the tops of the piston rods of the cylinder bodies positioned at the left-most side and the right-most side are connected with a cross rod. The upward thrust applied to the support plate comes from the downward pulling force of two hands of a user to the cross rod, the up and down movement of the cross rod and the support plate is stable, slow, safe and reliable, and people easily and freely control the speed of pull-ups action and can also leisurely finish the pull-ups action.

Description

technical field [0001] The invention relates to physical training equipment, in particular to a pull-up training device. Background technique [0002] Pull-ups are a common fitness exercise that mainly exercises the trapezius, latissimus dorsi and biceps. But not everyone can do pull-ups, this is because doing pull-ups requires greater strength, children, the elderly, women and the infirm usually cannot do pull-ups, and their arms cannot support the weight of the body . [0003] Chinese patent ZL200820098422.7 discloses an auxiliary device for horizontal bar pull-up training. The auxiliary device includes a half-body seat belt, an elastic telescopic piece, and a pendant for being placed on the horizontal bar. The front part of the waist belt of the safety belt is connected, and the upper end of the elastic telescopic part is connected with the pendant used for covering on the horizontal bar. When the trainer uses the auxiliary device, it is easy for the trainer to complet...

AI Technical Summary

Problems solved by technology

[0005] The above two training devices mainly use the elastic force of the spring to help people complete the pull-up action when people do the pull-up movement. The characteristic of the spring force is that the greater the spring compression, the greater the elastic force, and it is not controlled by the user. When people use this training device to do pull-ups, the upward elastic force is the largest when the body is at the bottom, and the upward elastic force is the smallest when the body reaches the top. The auxiliary force received by the body is uneven, which is not conducive to people's exercise. When the human body moves up and down quickly, due to the inertial effect of the elastic force, the up and down movement of the body is not easy to stop, and even poses a safety hazard

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