Composite bow integrated double-main-string static force symmetrical balance hanging string pulley block system

Abstract

The invention discloses a composite bow integrated double-main-string static force symmetrical balance hanging string pulley block system, and relates to the technical field of composite bow design, production and manufacturing and debugging detection. The composite bow integrated double-main-string static force symmetrical balance hanging string pulley block system comprises an overall assembly, wherein the overall assembly comprises a first pulley block and a second pulley block, and placing grooves are formed in the surfaces of the outer walls of the first pulley block and the second pulley block. According to the composite bow integrated double-main-string static force symmetrical balance hanging string pulley block system, hanging points of the first pulley block and the second pulley block are newly designed, so that only one integrated bowstring is used for being converted into two integrated bowstrings which are symmetrical left and right in a penetrating mode, so that distinguishing is not needed during production, manufacturing and assembling, and the cost is reduced; and one integrated bowstring is used, the structural layout of the two integrated bowstrings is achieved, the limitation of the left-right and deflection freedom degrees of the integrated bowstring is achieved, and the same tensioning degree of the two integrated bowstrings can be achieved without using an additional floating balance block, so that the problems of shooting precision caused by the freedom degree of the integrated bowstring, the number of the integrated bowstring, the manufacturing cost of the floating balance block and the assembling and debugging difficulty are solved.

Description

technical field [0001] The invention relates to the technical field of compound bow design, manufacture, debugging and detection, in particular to a compound bow integrated double main string static symmetrical balance hanging string pulley block system. Background technique [0002] Modern compound bows use a pulley block with the principle of leverage to meet the requirements of setting tension and sawing. The technical method is: install fiberglass bow limbs on the bow riser, and pre-bend it to reach the preset deflection stress; The pulley block with the principle of leverage, the geometric curvature of the wheel set is designed according to the tension curve and stretching distance; the bowstring of polymer material with low creep rate is installed on the wheel set, and the length and diameter of the bowstring match the sawing and rebound speed; the bowstring A D-ring rope or a magnetic base is installed on the top, which is used to locate the spatial position of the la...

AI Technical Summary

Problems solved by technology

At present, most of the compound bows on the market use a three-string structure, that is, double auxiliary strings plus a single main string structure, and the degree of freedom of a single main string is only limited to up and down, front and rear, while the restrictions on the left and right degrees of freedom are very small, and the deflection The degree of freedom of the bow string is limited to zero, and the rebound trajectory of the bow string will vibrate from side to side with regularity and frequency, as well as the deflection of the projected object caused by deflection, and other parts fixed on the main string are easy to flip and cause positioning failure; use double main strings The structure also brings a disadvantage, that is, it is impossible to manufacture two bowstrings of exactly the same length, resulting in different tensions of the left and right bowstrings, thus affecting the accuracy

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