挂具的柔性钢缆在受力时发生的变形较大，导致悬垂角保持在1/2线夹出口角（α）内比较困难。过大的导线悬垂角会导致线夹受到超过设计要求的弯矩挤压，从而发生破坏，导致试验结果不能真实地反映线夹的力学性能。通过分析和计算得出悬垂线夹力学性能试验过程中的受力特点，并对试验工装进行优化设计，然后将新型试验工装与柔性和刚性工装进行对比试验。结果表明：新型试验工装能将α/2角控制在标准规定范围内，解决了标准规定的试验方法中难以将α/2角控制在规定范围内导致试验结果失真的问题，从而提高悬垂线夹力学性能试验过程的规范性和试验结果的准确性。

It is difficult to keep the suspension angle within 1/2 of the clamp outlet angle (α) due to the large deformation of the flexible steel cable of the hanger. The suspension angle of conductor was too large, the clamp been squeezed by the bending moment exceeding the design requirements, which led to the failure of the clamp, and the test results could not truly reflect the mechanical properties of the clamp. The loading characteristics of suspension clamp in the process of mechanical property test were obtained through analysis and calculation, and the experimental tooling was optimized, and then the new test tooling was compared with the flexible and rigid equipment. The results show that the new test tooling can control the α/2 angle within the standard range, which solved the problem that it was difficult to control the α/2 angle within the specified range in the standard test method, which led to the distortion of the test results. The standardization of mechanical property test process and the accuracy of the test results of the suspension clamp were improved.