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起重(zhong)(zhong)(zhong)電纜滑線機械的鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)選(xuan)擇秘訣，起重(zhong)(zhong)(zhong)機械中選(xuan)用(yong)(yong)(yong)(yong)(yong)哪一(yi)種鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)應根據工(gong)作(zuo)(zuo)類型和(he)載荷情(qing)況(kuang)而定(ding)，做(zuo)到既能(neng)滿(man)足要(yao)求，又要(yao)經濟合理和(he)安(an)全(quan)(quan)可靠。確定(ding)合理的安(an)全(quan)(quan)系數對于(yu)作(zuo)(zuo)業(ye)安(an)全(quan)(quan)關系重(zhong)(zhong)(zhong)大(da)，因此，在可能(neng)的情(qing)況(kuang)下，安(an)全(quan)(quan)系數選(xuan)大(da)一(yi)些為好。鋼(gang)(gang)絲(si)(si)的直徑不(bu)同，共柔(rou)性(xing)和(he)彈性(xing)也不(bu)同，用(yong)(yong)(yong)(yong)(yong)作(zuo)(zuo)拖拉繩(sheng)(sheng)(sheng)(sheng)的鋼(gang)(gang)繩(sheng)(sheng)(sheng)(sheng)彎(wan)曲(qu)變形小，宜采(cai)用(yong)(yong)(yong)(yong)(yong)強度大(da)，鋼(gang)(gang)絲(si)(si)直徑較(jiao)(jiao)粗(cu)，結構為6×19+l的鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)。起重(zhong)(zhong)(zhong)用(yong)(yong)(yong)(yong)(yong)鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)在繞(rao)(rao)過滑輪和(he)卷揚機滾筒時(shi)，受彎(wan)曲(qu)變形大(da)，宜采(cai)用(yong)(yong)(yong)(yong)(yong)結構為6×37+1柔(rou)性(xing)大(da)的鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)。用(yong)(yong)(yong)(yong)(yong)于(yu)安(an)裝(zhuang)工(gong)程中的纜繩(sheng)(sheng)(sheng)(sheng)同樣宜采(cai)用(yong)(yong)(yong)(yong)(yong)此種鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)。用(yong)(yong)(yong)(yong)(yong)作(zuo)(zuo)繩(sheng)(sheng)(sheng)(sheng)套時(shi)宜采(cai)用(yong)(yong)(yong)(yong)(yong)更柔(rou)軟(ruan)的6×6l+1的鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)。另外，鋼(gang)(gang)絲(si)(si)繩(sheng)(sheng)(sheng)(sheng)有交繞(rao)(rao)、順繞(rao)(rao)之(zhi)分。其中，順繞(rao)(rao)的優點是(shi)繩(sheng)(sheng)(sheng)(sheng)子較(jiao)(jiao)柔(rou)軟(ruan)，容易曲(qu)折(zhe)，它和(he)滑輪或卷筒凹槽接觸面較(jiao)(jiao)大(da)，磨損輕(qing)。

缺點(dian)是(shi)各股繩(sheng)(sheng)(sheng)子和鋼(gang)絲(si)(si)(si)(si)都扭轉(zhuan)了(le)一定角度，使鋼(gang)繩(sheng)(sheng)(sheng)容易(yi)回轉(zhuan)扭松，吊重(zhong)時會使重(zhong)物選擇產(chan)生危險，易(yi)糾(jiu)纏。用(yong)(yong)途(tu)(tu)上用(yong)(yong)作拖拉(la)繩(sheng)(sheng)(sheng)和牽(qian)引裝置上，不(bu)宜(yi)用(yong)(yong)再起(qi)(qi)重(zhong)機(ji)和滑(hua)(hua)輪(lun)上。交繞的(de)(de)(de)優點(dian)是(shi)各根鋼(gang)絲(si)(si)(si)(si)繩(sheng)(sheng)(sheng)的(de)(de)(de)載荷(he)分(fen)布均勻，因而強(qiang)度較(jiao)高，扭轉(zhuan)糾(jiu)纏的(de)(de)(de)傾向小，工作安(an)(an)全(quan)，各股繩(sheng)(sheng)(sheng)子不(bu)易(yi)分(fen)開。用(yong)(yong)途(tu)(tu)是(shi)起(qi)(qi)重(zhong)機(ji)械提升裝置、吊索。鋼(gang)絲(si)(si)(si)(si)繩(sheng)(sheng)(sheng)不(bu)僅(jin)承受拉(la)力，而且在滑(hua)(hua)輪(lun)或滾筒上經多次(ci)穿繞還受到彎曲作用(yong)(yong)。滾筒或滑(hua)(hua)輪(lun)直(zhi)徑愈(yu)小，則繩(sheng)(sheng)(sheng)產(chan)生的(de)(de)(de)應力愈(yu)大，因此為保證鋼(gang)絲(si)(si)(si)(si)繩(sheng)(sheng)(sheng)的(de)(de)(de)使用(yong)(yong)壽命，對選用(yong)(yong)的(de)(de)(de)鋼(gang)絲(si)(si)(si)(si)繩(sheng)(sheng)(sheng)直(zhi)徑D和滑(hua)(hua)輪(lun)、滾筒的(de)(de)(de)直(zhi)徑D的(de)(de)(de)小比值也作了(le)規(gui)定。選用(yong)(yong)鋼(gang)絲(si)(si)(si)(si)繩(sheng)(sheng)(sheng)時，可(ke)根據工作狀態(tai)下的(de)(de)(de)大靜拉(la)力和安(an)(an)全(quan)系(xi)數(shu)確(que)定其破斷拉(la)力，然后再查閱鋼(gang)絲(si)(si)(si)(si)繩(sheng)(sheng)(sheng)性能表就可(ke)以選擇出所需的(de)(de)(de)型號(hao)和直(zhi)徑。

文章來源：揚州市天(tian)翔電氣有(you)限(xian)公司