钢丝绳破断拉力总和
钢丝绳计算方法和公式
钢丝绳拉力计算方法和公式
一、近似破断拉力S破断=500d2
钢丝绳的近似极限工作拉力S极限= S破断/k=500d2/k （N）d2——钢丝绳直径（㎜）
K——安全系数根据用途不同安全系数大小也不同，作揽风绳用时一般为3.5，起重用时一般为4.5，机动起重时一般为5～6，绑扎吊索用一般为6.
例题计算：抗拉强度为1400N/㎜2的钢丝绳，直径为6.2㎜，绑扎吊索用。
S极限= S破断/k=500d2/k=500×6.22/6=3.2 KN
二、钢丝绳的破断拉力S P=Φ.s0
S P——钢丝绳的破断拉力（N）
s0——钢丝绳的钢丝破断拉力总和（N）
Φ——折减系数 6×19绳 =0.85
6×37绳 =0.82
6×61绳 =0.80
许用拉力〖S〗=S P/n n——安全系数
此种方法关键的问题是要知道组成钢丝绳的每根钢丝的直径，然后根据抗拉强度乘以总面积，求出钢丝绳破断拉力总和。
钢丝绳破断拉力计算方法
直径×直径×钢丝抗拉强度×÷1000=kn
18×7k、19×7k
直径×直径×钢丝抗拉强度×（）÷1000=kn
电梯绳（线接触）
8×19s+fc、8×19w+fc
直径×直径×钢丝抗拉强度×÷1000=kn
8×19s（钢芯）、8×19w（钢芯）
直径×直径×钢丝抗拉强度×÷1000=kn
高速电梯绳（线接触）
钢丝绳破断拉力计算方法
类别
钢丝绳结构
计算公式
单股（点接触）
1×7
直径×直径×钢丝抗拉强度×÷1000=kn
1×19
直径×直径×钢丝抗拉强度×÷1000=kn
1×37
直径×直径×钢丝抗拉强度×÷1000=kn
多股（点接触）
6×7+fc
直径×直径×钢丝抗拉强度×÷1000=kn
7×7
直径×直径×钢丝抗拉强度×÷1000=kn
直径×直径×钢丝抗拉强度×÷1000=kn
涂塑钢丝绳
按照内部钢丝绳结构计算，涂塑层可忽略不计
线接触钢丝绳
6×19s、6×19w
直径×直径×钢丝抗拉强度×÷1000=kn
6×25fi、6×29fi
6×36sw、6×31sw
6×19s（钢芯）、6×19w（钢芯）
直径×直径×钢丝抗拉强度×÷1000=kn
6×25fi（钢芯）、6×29fi（钢芯）
打桩机、钻机钢丝绳
6×36sw（钢芯）、6×31sw（钢芯）
6×19+fc,6×19+(钢芯)
直×直径×钢丝抗拉强度×÷1000=kn
6×37+fc,6×37+(钢芯)
直径×直径×钢丝抗拉强度×÷1000=kn
钢丝绳常用系数
钢丝绳常用数据一、钢丝绳最大许用拉力计算（1）拉力计算公式：〖S〗≤P/K公式中〖S〗——钢丝绳允许用拉力（KN）P———钢丝绳破断拉力（KN）K———钢丝绳的安全系数（2）钢丝绳安全系数：（3）钢丝绳破断拉力1、6×19钢丝绳破断拉力2、6×37钢丝绳破断拉力3、6×61钢丝绳破断拉力二、钢丝绳报废标准（1）、钢丝绳直径减少，当直径磨损不超过30％，可允许降低拉力使用，如果超过30％，要进行报废处理。
（2）、钢丝绳经过长期使用后，由于受自然条件和化学腐蚀，当整个钢丝绳外表面受腐蚀的麻面，从外观检查明显时，则该钢丝绳已不能使用。
另一方面，整根钢丝绳纤维芯被挤出，使钢丝绳结构受到破坏时，也不能继续使用。
（3）、钢丝断丝后的报废标准，见下表。
破断拉力计算 Breaking force calculation: Fo = K' D2 Ro/1000Fo —钢丝绳最小破断拉力，单位为kN;Minimum breaking load of wire rope (kN)D —钢丝绳公称直径,单位为mm;Nominal diameter of wire rope (mm)Ro —钢丝绳公称抗拉强度，单位为MPa;Nominal tensile strength of wire rope (MPa).K' —某一指定结构钢丝绳的最小破断拉力系数（见表一表二）Minimum breaking load coefficient of wire rope (see list 1 and list 2).重量计算 Weight calculation: M = K·D2M —钢丝绳单位长度的参考重量，单位为：kg/100m;Reference weight of unit length of wire rope (kg/100m)D —钢丝绳的公称直径，单位为mm; Nominal diameter of wire rope (mm)K —充分涂油的某一结构钢丝绳单位长度的重量系数，单位为kg/100m·mm2。
钢丝绳的受力计算方法
For personal use only in study and research; not for commercial use For personal use only in study and research; not for commercial use钢丝绳的受力计算方法某一规格的钢丝绳允许承受的最大拉力是有一定限度的,超过这个限度,钢丝绳就会被破坏或拉断,因此在工作中需对钢丝绳的受力进行计算。
(一)钢丝绳的破断拉力钢丝绳的破断拉力可由表中查出,考虑钢丝绳捻制使每根钢丝受力不均匀,整根钢丝绳的破断拉力应按下式计算:SP=ΨΣSi式中SP ——钢丝绳的破断拉力,kN;ΣSi ——钢丝丝绳规格表中提供的钢丝破断拉力的总和,kN;Ψ——钢丝捻制不均折减系数,对6×19绳,Ψ=0.85;对6×37绳,Ψ=0.82;对6×61绳,Ψ=0.80。
但在工作现场,一般缺少图表资料,同时也不要求精确计算,此时可采用下式(仅为数据估算用,非规范公式)估算钢丝绳的破断拉力:SP=500d2。
（钢丝绳公称抗拉强度1550Mpa）式中SP——钢丝绳的破断拉力,N;d——钢丝绳的直径,mm。
(二)钢丝绳的安全系数为了保证起重作业的安全,钢丝绳许用拉力只是其破断拉力的几分之一。
破断拉力与许用拉力之比为安全系数。
下表列出了不同用途钢丝绳的安全系数。
钢丝绳安全系数表：使用情况安全系数k缆风绳及拖拉绳用 3.5用于手动起重设备 4.5用于机动起重设备 5-6用于吊索有绕曲 6-8用于绑扎吊索 8-10用于载人升降机 14(三)钢丝绳的许用拉力P = SP / K式中 P——钢丝绳的许用拉力,N;SP——钢丝绳的破断拉力,N;K ——钢丝绳的安全系数。
例 : 型号6×37-30的钢丝绳（公称抗拉强度1700Mpa）,用做捆绑绳时其许用拉力为多大？解: 查表得SP=580500(N)（注：因为表中数据已考虑了钢丝捻制不均折减系数，所以不须再乘以系数0.82）用做捆绑绳时,取K=10,则P = SP/K =580500/10=58050（N）（四）钢丝绳的实际受力钢丝绳的实际受力根据吊点位置、钢丝绳数量以及钢丝绳与构件的夹角等因素进行计算。
钢丝绳破断拉力总和计算
按照内部钢丝绳结构计算，涂塑层可忽略不计
8×19s（钢芯） 、8×19w（钢芯）直径×直径×钢丝抗拉强度×0.346÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.33÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.4÷1000=kn÷9.8=吨
高速电梯绳 （线接 8×19s+8×7+pp 触） 8×19s+8×7+1×19
类别 单股（点接触）
钢丝绳结构 1×7 1×19
计算公式 直径×直径×钢丝抗拉强度×0.54÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.53÷1000=kn÷9.8=吨
1×37 6×7+fc 多股（点接触） 7×7 6×19+fc,6×19(钢芯) 6×37+fc,6×37(钢芯) 18×7、18×19s 多层股不旋转钢 19×7 丝绳 35w×7 6×19s、6×19w 6×25fi、6×29fi 线接触钢丝绳 6×36sw、6×31sw
直径×直径×钢丝抗拉强度×0.49÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.33÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.36÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.3（0.33）÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.295（0.319）÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.31÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.328÷1000=kn÷9.8=吨 直径×直径×钢丝抗拉强度×0.36÷1000=kn÷9.8=吨
吊篮专用绳 （线接 4×31sw 触） 捆绑专用绳 （点接 6×12+7fc 触） 6×24+7fc
起重吊运钢丝绳的破断拉力慨约计算公式
起重吊运钢丝绳的破断拉力慨约计算公式：钢丝绳直径(mm)的平方乘以50等于破断拉力（公斤）此公式二十年前在一本起重机方面的书上学的，工作中运用较方便。
对照钢丝绳表查，基本上符合6乘19纤维芯钢丝绳公称抗拉强度1670兆帕的钢丝绳最小破断拉力。
起重吊运用时应将破断拉力除以安全系数6倍等于安全负荷。
QQQQQQQQQQQQQQQQQQQQQQQQ一般矿井用钢丝绳有以下种类：1 、斜井提升用6X7+FC和6TX7+FC(面接触）、6X19S+FC和6TX19S+FC、6VX19+FC；2、竖井卷扬提升一般用6X26WS+FC 6X36WS+FC 18X7+FC 6VX34+FC6VX37+FC 6X25TS+FC 6X28TS+FC ,罐道钢丝绳一般用密封钢丝绳。
3、竖井摩擦提升一般用6VX34+FC 6VX37+FC 6X25TS+FC 6X28TS+FC ，罐道钢丝绳一般用密封钢丝绳，尾绳一般采用扁钢丝绳P8X4X7 P8X4X14P8X4X19，34X7+FC 、35WX7 。
国外进口钢丝绳质量好的有：布赖顿和欧洲钢缆公司的三角股6X25TS+FC6X28TS+FC ；国内质量好的有：宁夏恒力钢丝绳，贵州钢丝绳、鞍钢钢丝绳、武钢维尔卡钢丝绳；QQQQQQQQQQQQQQQQQQQQQQQQQQQQQ1 、斜井提升用6X7+FC和6TX7+FC(面接触）、6X19S+FC和6TX19S+FC、6VX19+FC；2、竖井卷扬提升一般用6X26WS+FC 6X36WS+FC 18X7+FC 6VX34+FC6VX37+FC 6X25TS+FC 6X28TS+FC。
3、竖井摩擦提升一般用6VX34+FC 6VX37+FC 6X25TS+FC 6X28TS+FC ，罐道钢丝绳一般用密封钢丝绳，尾绳一般采用扁钢丝绳P8X4X7 P8X4X14P8X4X19，34X7+FC 、35WX7 。
贵州钢丝绳矿用钢丝绳质量第一QQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ煤矿常用什么型号钢丝绳？用途名称结构备注立井提升三角股钢丝绳6V×37S、6V×36、6V×33、6V×30、6V×436V×21线接触钢丝绳6×19S、6×19W、6×25Fi、6×29Fi、6×26SW6×31SW、6×36SW、6×41SW推荐同向捻多层股钢丝绳18×7、17×7 用于钢丝绳罐道的立井6Q×19+6V×21、6Q×33+6V×21开凿立井提升（建井用）多层股钢丝绳及异型股钢丝绳6Q×33+6V×21、17×7、18×7、34×7、36×76Q×19+6V×21、4V×39S、4V×48S立井平衡绳扁钢丝绳6×4×7、8×4×7、8×4×9、8×4×19钢丝绳6×37、6×37S、6×36SW、4V×39S、4V×48S 仅适用于交互捻多层股钢丝绳17×7、18×7、34×7、36×7 仅适用于交互捻斜井卷扬（绞车）三角股钢丝绳6V×18钢丝绳6T×76×7、6×9W 推荐同向捻高炉卷扬三角股钢丝绳6V×37S、6V×36、6V×30、6V×33、6V×43 线接触钢丝绳6×19S、6×25Fi、6×29Fi、6×26SW、6×31SW6×36SW、6×41SW立井罐道及索道承重密封钢丝绳见密封钢丝绳标准三角股钢丝绳6V×18多层股钢丝绳18×7、17×7 推荐同向捻钢丝绳6×7 推荐同向捻露天斜坡卷扬三角股钢丝绳6V×37S、6V×36、6V×30、6V×33、6V×43线接触钢丝绳6×36SW、6×37S、6×41SW、6×49SWS6×55SWS推荐同向捻QQQQQQQQQ钢丝绳百米重量的换算(钢丝绳重量的计算公式)：钢丝绳百米参考重量=钢丝绳直径²×系数或写成：钢丝绳百米参考重量=钢丝绳直径×钢丝绳直径×系数各种钢丝绳重量系数值如下：1×7的系数为0.5226×7+FC的系数为0.3571×37的系数为0.5011×19的系数为0.5077×7的系数为0.3876×19S+FC的系数为0.396×19S+IWRC系数为0.426×19W+FC的系数为0.396×19W+IWRC系数为0.426×19+FC的系数为0.3566×19+IWRC系数为0.416×37+FC的系数为0.3566×37+IWRC系数为0.416×24+FC的系数为0.3186×12+FC系数为0.2516×15+FC的系数为0.205 QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ。
如何计算钢丝绳破断拉力
对于钢丝的种类繁多计算起来不方便，下面我就介绍几种光宇钢丝绳的破断拉力计算的方法。单股(点接触) 1×7 直径×直径×钢丝抗拉强度×0.54÷1000=kn÷9.8=吨 1×19 直径×直径×钢丝抗拉强度×0.53÷1000=kn÷9.8=吨 1×37 直径×直径×钢丝抗拉强度×0.49÷1000=kn÷9.8=吨 多股(点接触) 6×7+fc 直径×直径×钢丝抗拉强度×0.33÷1000=kn÷9.8=吨 7×7 直径×直径×钢丝抗拉强度×0.36÷1000=kn÷9.8=吨 6×19+fc,6×19(钢芯) 直径×直径×钢丝抗拉强度×0.3(0.33)÷1000=kn÷9.8=吨 6×37+fc,6×37(钢芯) 直径×直径×钢丝抗拉强度×0.295(0.319)÷1000=kn÷9.8=吨 多层股不旋转钢丝绳 18×7、18×19s 直径×直径×钢丝抗拉强度×0.31÷1000=kn÷9.8=吨 19×7 直径×直径×钢丝抗拉强度×0.328÷1000=kn÷9.8=吨 35w×7 直径×直径×钢丝抗拉强度×0.36÷1000=kn÷9.8=吨 线接触钢丝绳 6×19s、6×19w 直径×直径×钢丝抗拉强度×0.33÷1000=kn÷9.8=吨 6×25fi、6×29fi 6×36sw、6×31sw 6×19s(钢芯)、6×19w(钢芯) 直径×直径×钢丝抗拉强度×0.356÷1000=kn÷9.8=吨 6×25fi(钢芯)、6×29fi(钢芯) 打桩机、钻机钢丝绳 6×36sw(钢芯)、6×31sw(钢芯) 35w×7k 直径×直径×钢丝抗拉强度×0.41÷1000=kn÷9.8=吨 18×7k、19×7k 直径×直径×钢丝抗拉强度×0.35(0.37)÷1000=kn÷9.8=吨 电梯绳(线接触) 8×19s+fc、8×1
钢丝绳计算方法和公式
钢丝绳拉力计算方法和公式
一、近似破断拉力S破断=500d2
钢丝绳的近似极限工作拉力S极限=S破断/k=500d2/k （N）2
d ------ 钢丝绳直径（mm）
K――安全系数根据用途不同安全系数大小也不同，作揽风绳用时一般为3.5,起重用时一般为4.5，机动起重时一般为5~6,绑扎吊索用一般为6.
例题计算：抗拉强度为1400N/m 2的钢丝绳，直径为6.2 mm,绑扎吊索用。
2 2
S 极限=S 破断/k=500d2/k=500 X 6.22/6=3.2 KN
二、钢丝绳的破断拉力S P=①.S o
S p --------- 钢丝绳的破断拉力（N）
S o——钢丝绳的钢丝破断拉力总和（N）
①——折减系数 6 X 19绳=0.85
6 X 3
7 绳=0.82
6 X 61 绳=0.80
许用拉力〖S〗=S p/n n ------ 安全系数
此种方法关键的问题是要知道组成钢丝绳的每根钢丝的直径，然后根据抗拉强度乘以总面积，求出钢丝绳破断拉力总和。