Rapid labor-saving bicycle

Abstract

The invention discloses a rapid labor-saving bicycle. Chain wheels with the same diameters are installed at the two ends of a lengthened back shaft of the bicycle respectively, the position, between a front wheel and a back wheel, of a bicycle frame corner extends to the two sides to form wheel disc shafts, and wheel discs with the same diameters are installed on the wheel disc shafts respectively; the diameter of the wheel discs is 3 to 5 times that of the chain wheels, and a pedal is installed at the outer end of each wheel disc shaft through a foot crutch; a swing wheel with the diameter smaller than the distance between the two wheel discs is installed in the middle of the lower face supported through the wheel disc shafts through a lower support, two chains are fixed into wheel grooves on the two wheel discs through screws respectively, the chain wheels on the back side are wound with the middles of the chains in a sleeving manner, and the two chain wheels are each provided with a soft steel wire rope through screws in a fixed manner; the middles of the steel wire ropes are tensioned on the periphery of a lower semicircle of the swing wheel, and the two ends of the steel wire ropes are fixed into the wheel grooves of the wheel discs respectively. The rapid labor-saving bicycle has the beneficial effects that labor is saved during pedaling, the riding speed is high, the structure is simple, and the cost is low.

Description

Technical field: [0001] The present invention relates to a bicycle, in particular to a bicycle which is labor-saving and convenient to increase speed. Background technique: [0002] Although the existing variable-speed labor-saving bicycles and mountain bicycles have the advantages of fast riding and labor-saving, they all perform circular motions when pedaling hard, and can only be used in the semicircular part that rotates forward when doing circular motions. The upper part, the lower part and the rear semicircle part are the dead ends where the upper force cannot be used. In addition, the existing various speed change bicycles and various mountain bicycles are complicated in structure and high cost. Invention content: [0003] The purpose of the present invention is to provide a fast and labor-saving bicycle with simple structure, low cost, convenient riding force, and convenient speed increase. [0004] The technical solution of the present invention is accomplish...

AI Technical Summary

Problems solved by technology

[0002] Existing variable-speed labor-saving bicycles and mountain bikes, although they have the advantages of fast riding speed and labor-saving, they all do circular motion when pedaling hard, and can only be used in the semicircle part of the forward rotation when doing circular motion. The top, bottom and rear semicircle parts are the dead corners where the force is not needed. In addition, the existing various variable speed bicycles and various mountain bikes are relatively complicated in structure and high in cost.

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