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本文就用于高温拉力,蠕变试验机上的长杆式引伸计各部分功能,设计要求作简略说明。并在具体设计中采用的结构对提高传递精度稳定性、简化装调操作、加工工艺性能方面加以分析。在带有高温炉的拉力、蠕变等材料试验机上,试样变形由于测量仪器经不住炉膛的高温,必须把试样的变形量传到高温区外,一般都采用长杆式引伸计。长杆式引伸计的设计是多种多样的。但总的来说它由三部分组成的。上端是夹持部分。(处于高温区),中间部分是长杆(处于高温和常温的过渡区中),下端是测量仪器的夹持部分。 (处于常温区)其总体设计要求在保证其功能的情况下尺寸尽量小,重量轻。上夹持部分尺寸
This article is used for high temperature tensile, creep testing machine on the function of the various parts of the rod-type extensometer, the design requirements for a brief description. And in the specific design of the structure used to improve the transmission accuracy and stability, simplify the installation operation, processing technology to be analyzed. In a tensile test with a high temperature furnace, creep and other materials testing machine, the sample deformation As the measuring instrument can not withstand the high temperature furnace, the deformation of the sample must be spread to the high temperature zone, the general use of long rod-type extensometer. Long rod extensometer design is varied. But in general it consists of three parts. The top is the clamping part. (In the high temperature zone), the middle part is the wand (in the transition zone between high and ambient temperature) and the lower part is the holding part of the measuring instrument. (At room temperature) its overall design requirements in the case of ensuring its functionality as small size and light weight. On the holding part of the size