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木文对拐腿式盒型平支臂和斜支臂的机械计算公式作了系统介绍。除斜支臂外端的转角和轴向变形柔度采用弹性应力函数求解平而应力的方法外,其余公式都采用材料力学莫尔定理求解梁变形的方法和一般梁应力计算的方法得到。通过理论计算和实际测量说明现有公式的精度是准确的。
The paper gives a systematic introduction to the mechanical calculation formula of the box-legged box-arm and the diagonal arm. Except for the method of solving the beam deformation using the method of material mechanics Moore’s theorem and the method of general beam stress calculation, except the method of using the elastic stress function to solve the flat and stress method, except the angle and axial deformation flexibility of the outer end of the oblique arm. The theoretical calculation and actual measurement show that the accuracy of the existing formula is accurate.