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ABOUT CHANGHONG

DIRECT BOBBIN SPOOL MANUFACTURER

Since founded in 2013,we have been the pioneer that has specialized in the research and production of various kinds of spools.

 

Not only in China,but in many countries,including Gemany,UK,USA,Malaysia,Vietnam,Mexico and so on,we serve more than 10000 valuable customers in wire&cable industry.

We are sure,which can make it evident that we have great competitiveness in quality and service.

 

We have 2 certificate of China Utility Model Patent,we never stop keeping inovating.

We have professional ability to provide you the best spool solutions.

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电动铰线盘的制作注意事项(二)

5、扇形线芯的结构必须满足哪两个要求?   答:(1)中心层中心经上的单线应同样排列在扇形的中心线上,如不能保证这个要求,在线芯弯曲时,这些单线会受到拉伸或压缩,造成单线隆起,从而导致扇 形线芯的外形改变。(2)滑移要求:即扇形外周的单线应能在中心层上滑动,这是因包上绝缘后的扇形线苡,绞成电缆线芯时没有退扭,外周各单线力求环绕中心面滑动之故,如满足不了这个要求,同样产生单线跳起,破坏扇形线的外形。   6、同心层绞合的绞线,相邻层绞向规定为相反,为什么?   答:(1)绞线是圆形的,如相邻层采用同一绞向绞合时,容易产生外一层的单线嵌入内一层中去,从而破坏完整的圆形结构。(2)当绞线受到拉力时,各层产生的转动力矩相反,可以相互抵消,防止各层单线向同一方向转动而造成松股,同时还可避免绞线在未拉紧 时产生打圈现象。(3)在钢芯铝绞线中,可以减小交流阻抗,减少电晕现象和电能的损耗。   7、目前经常采用的绝缘线芯绞合在一起的方式有哪两种?国内市内通信电缆目前采用哪一种?   答:对绞和星绞。国内市内通信电缆目前采用对绞。   8、绞缆时所用模子的模孔进口处呈喇叭状,道理何在?   答:模孔进口处呈喇叭状有两点好处:(1)以便逐渐地压缩绞合的缆芯;(2)不致于擦伤缆芯。

2021-09-15

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