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本文介绍的是一种新型的专利产品:电阻应变计式引伸计,属于测量装置类。并对引伸计的刀承及夹持结构进行分析,该产品是由电桥盒、引线、上臂、下臂、上限位支架,下限位支架,定位针,刀承及勾型卡簧组成。本实用新型是在上下臂的前端装有两个并列的,可转动的园盘刀承,当刀承刃磨损或崩齿时,可转动继续使用,增加了同一付刀承的工作点,延长了使用寿命;还可在上下臂的前端,分别装上一个勾形卡簧,使引伸计装卡更加方便,并能实现快速装卸。
This article describes a new type of patented product: resistance strain gauge extensometer, belonging to the measuring device category. The product is composed of electric bridge box, lead wire, upper arm, lower arm, upper limit bracket, lower limit bracket, positioning pin, knife bearing and hook type retainer. The utility model is provided with two side-by-side and rotatable disc cutter knives on the front ends of the upper and lower arms, which can be rotated and used continuously when the blade is worn or broken, increasing the working point of the same cutting knife and prolonging The service life; but also in front of the lower arm, respectively, fitted with a hook-shaped retainer, the extensometer card loading more convenient and can achieve rapid loading and unloading.