预绞式耐张线夹用于架空线路导线的中间、终端的固定。耐张线夹根据所匹(pi)配导(dao)线(xian)的材(cai)质不同(tong)而(er)不同(tong),一(yi)般对(dui)于铝(lv)(lv)合(he)金导(dao)线(xian)采用(yong)高强度铝(lv)(lv)合(he)金,对(dui)于钢芯铝(lv)(lv)绞(jiao)线(xian),线(xian)夹使(shi)用(yong)铝(lv)(lv)包钢。
耐张线夹的原理:一组(zu)预绞丝(si)经(jing)合(he)并后形成了空(kong)管(guan)(guan),当空(kong)管(guan)(guan)缠(chan)绕在导线(xian)上(shang)受力时即对导线(xian)产生(sheng)了握紧力,保(bao)证导线(xian)的握紧强度,而另(ling)一端可以通过嵌环固定在绝缘子上(shang)。
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