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本文介绍一个用滑轮装置来提高拉力试验机自动记录负荷-夹头位移曲线放大率的方法,从而用于测定屈服强度. 一原理将两滑轮A、B的轴分别固定在位于同一垂线方向上的试验机上、下两夹头座W_1和W_2上,并使两滑轮A、B上下对准,将一根刚性绳的一端固定在上夹头座W_1上一点O,并使O点和滑轮A沟槽底面中心线上一点O_1位于同一垂线上.绳的另一端先后绕过滑轮B和A再绕过记录纸滚筒C后下挂一重锤P,
This article describes a pulley device to improve the tensile test machine automatically record the load - chuck displacement curve magnification method, which is used to determine the yield strength of a principle of the two pulleys A, B axis were fixed in the same vertical direction Of the test machine, the next two chuck holders W_1 and W_2, and the two pulleys A, B up and down alignment, the end of a rigid rope in the upper chuck seat W_1 on a point O, and the O point and the pulley A Groove bottom centerline O_1 point in the same vertical line on the other end of the rope has been around the pulley B and A and then bypass the recording paper cylinder C after hanging a hammer P,