GB2320.31985耐张线夹(液压型)

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1、中华人民共和国国家标准耐张线夹(液压型)UDC621.315.6GB2320.3—85Strainclamp(hydraulictype)国家标准局1985-01-23发布1985-12-01实施1适用范围本标准适用于架空电力线路和变电所在耐张杆塔上固定钢芯铝绞线的耐张线夹。2型式与尺寸2.1耐张线夹为NY型。2.2耐张线夹主要尺寸应符合下图及下表的规定：mm适用导线型号外dd1d2ll1l2l3φ1φ2型号径NY-240/30LGJ-240/3021.6016183808523.07.9NY-240/40LGJ-240/4021.66361618

2、3901059510023.08.7NY-240/55LGJ-240/5522.40201841011524.010.3NY-300/15LGJ-300/1523.011416360956024.55.7NY-300/20LGJ-300/2023.434014183801057011025.06.5NY-300/25LGJ-300/2523.7614184108025.57.3NY-300/40LGJ-300/4023.9416184409525.58.7NY-300/50LGJ-300/5024.2640181841010510511026.09

3、.6NY-300/70LGJ-300/7025.2042222045014013027.011.5NY-400/20LGJ-400/2026.9114184001057028.56.5NY-400/25LGJ-400/2526.6414184101058028.57.3NY-400/35LGJ-400/3526.824516204201409028.58.2NY-400/50LGJ-400/5027.63202045014011012029.59.9NY-400/65LGJ-400/6528.00222248016012529.511.0NY-40

4、0/95LGJ-400/9529.1448262651018015031.013.2NY-500/35LGJ-500/3530.0016204501409031.58.2NY-500/45LGJ-500/4530.0052182046014010013031.59.1NY-500/65LGJ-500/6530.96222249016012532.511.0NY-630/45LGJ-630/4533.60182249016010035.59.1NY-630/55LGJ-630/5534.3260202251016011515036.010.3NY-6

5、30/80LGJ-630/8034.82242655018014036.512.3NY-800/55LGJ-800/5538.40202656018011540.010.3NY-800/70LGJ-800/7038.5865222656018013017040.511.5NY-800/100LGJ-800/10038.98263059020015540.513.7表中型号中字母及数字意义为：N——耐张；Y——压缩；数字——适用导线的标称截面；分子表示铝截面；分母表示钢截面。2.3引流板螺栓孔尺寸按SD28—82《电力金具接线端子》的规定。3技术要求

6、3.1耐张线夹一般技术条件应符合GB2314—85《电力金具通用技术条件》的规定。3.2材质与紧固件：a.耐张线夹铝管按GB3190—82《铝及铝合金加工产品的化学成分》采用牌号不低于L32制造的挤压铝管，管材抗拉强度不低于78.4N/mm(78.4MPa)。铝板按GB3193—82《铝及铝合金热轧板》，采用牌号不低于L3铝板。2b.拉环按GB700—79《普通碳素结构钢技术条件》，采用抗拉强度不低于372.5N/mm(372.5MPa)钢。c.耐张线夹钢管按GB699—65《优质碳素结构钢钢号和一般技术条件》，采用10号优质2碳素结构钢无缝钢管或

7、抗拉强度不低于372.5N/mm(372.5MPa)的钢，硬度不大于布氏HB133。d.螺栓按GB5—76《六角头螺栓(粗制)》。e.螺母按GB41—76《六角螺母(粗制)》。f.弹簧垫圈按GB93—76《弹簧垫圈》。g.垫圈按SD27—82《加厚大垫圈》。3.3钢锚的钢管内壁应无锌层。3.4耐张线夹握力应不少于以下数值：NY-240/30型71.8kN；标准分享网www.bzfxw.com免费下载NY-240/40型79.2kN；NY-240/55型97.0kN；NY-300/15型64.7kN；NY-300/20型71.9kN；NY-300/2

8、5型79.2kN；NY-300/40型87.6kN；NY-300/50型98.2kN；NY-300/70型121.6kN；