螺栓的拉力計算

滿意答案熱心問友2012-06-20這個是網(wǎng)上一位達人M20螺栓的拉力計算M12的以此類推：當(dāng)材料和聯(lián)接方法不同時，許用拉力是不同的。你沒說材料，也沒說方式。不過，我把常見的螺紋聯(lián)接的許用拉力告訴你。首先：查手冊，M20的小徑d1=17.294mm,算出有效截面積A=234.9mmA2螺栓的常用材料為35號鋼，35鋼的屈服極限320MPa。受拉的聯(lián)接分為松聯(lián)接和緊聯(lián)接。松螺栓聯(lián)接時，安全系數(shù)取1.4，許用應(yīng)力F=320/1.4=228.6MPa許用拉力=F*A=234.9*234.9=53698N=53.7KN緊螺栓聯(lián)接時，如果控制預(yù)緊力，許用拉力和松聯(lián)接的相同。如果不控制預(yù)緊力，則安全系數(shù)要取2.5。許用應(yīng)力F=320/2.5=128MPa許用拉力=F*A=128*234.9=30067N=30KN結(jié)論：受拉、材料為35號鋼的M20的螺栓，當(dāng)它為松聯(lián)接或控制預(yù)緊力的緊聯(lián)接時，最大拉力約53.7KN；為緊聯(lián)接且不控制預(yù)緊力時，最大拉力為約30KN。哮桂及嫁母允許最太拉力(KN)最小破小強度MPa392S887849411176材屆一般構(gòu)適用鉗機械椅迪用鋼銘鉗合金鋼釵銘鋁臺金銅囊栓M(料牙蝸施)攜母對邊mm最太拉力(KN)最大拉力(KN)最太拉力(KN)最太拉力(KN)航太拉力(KM)14(X2)2244.3166.4788.62106.37132.9316(x2)2460.3190.47120.62144.78180.9318(X2.5)2773.92110.9147.85177.47221.7820<x2.5>3094.23141.36188.47225.2282.722(X2.5)32117175.S234280.8835124(x3>36135.7203.56271.4325.75407.127(x3)41177.24265.88254.48425.48531.7230(x3.5>46216.1324.15432.17518.73648.2633(x3.5)50267.77398.8535.4642.4803.136(X4)5531Z.8472.6D30755.994539(x4>60376.5564.8753.7904.21122.942(X4.5)65432.6648.486S.2103S.5128945(x4.5>70504.6756.31009.41207.41503.548(x5)75564.Q847.61137.61361169552(x5>80675101213501626202556(x5.5)85779116915581877233760(X5.5)90907.5136118152186272264(x6)951028154220552476308368(X6)1001175176123492829352372(x6)1051331199626623206399376110拉蜴洗計言拄蝶況計莒按靖距計宣投蜴洗計尊按蛟距計算80115技媒距計算按螺距計算按蛾距計算網(wǎng)距計算按蛾距計算85120拔螺距計算按蝮膽計算技蜴葩計算按蝮匝計算90130拔蝗宓計算技蝶跑計算按蝮距計算拐尷計算按蝮值計宮10014S按螺族計算按雄距計算按螺距訃算我蝮血計其110155鼬葩計算技技沌計算按驅(qū)距計算技甥柜計算按炒柜計算12017S技媛距計算按囊距計算按以距計算技媛距計算按蝮距計算說明：此囹表是按照德國工業(yè)標(biāo)準中的最小破斷強度經(jīng)逐計算得出的最大允許拄力值。在實際應(yīng)用中，最大的元許拉力應(yīng)該在此加值的基礎(chǔ)上x(80?90)%。

粗牙普通螺紋的最小拉力載荷dP性能等級3.64.64.85.65.86.8|8.89.810.912.9(mm)(mm2)最小打［力載荷（七、)(kN)30.55.031.662.012.112.512.623.(124.024.535.236.143.50.66.782.242.712.853.393.534.075.426.17.058.2740.78.782.93.513.694.394.575.277.027.99.1310.750.814.24.695.685.967.17.388.5211.3512.814.817.36120.16.638.048.441010.412.116.118.120.924.57128.99.5411.612.114.41517.323.12630.135.381.2536.612.114.615.418.3192229.232.938.144.6101.55819.123.224.42930.234.846.452.260.370.8121.7584.327.833.735.d42.243.850.667.475.987.7103142115384648.357.559.8699210412014016215751.862.865.978.581.694125141163192182.519263.476.$80.69699.8115159—200234202.524580.898103122127147203—255299222.530310(1121127152158182252—315370243353116141148176184212293—367431273459152184193230239275381—477560303.5561185224236280292337466—583684333.5694229278291347361416576—722847364817270327343408425490678—850997394976322390410488508586810—10201200粗牙普通螺紋的保證載荷dP性能?級3.64.64.85.65.86.88.89.810.912.9（皿）(mm2)鼓小拉力載荷（Asx$p（kN）30.55.030.911.131.561.411.912.212.923.274.184.883.50.66,781.221.532.11.92.582.983.944.41￡636.5840.78.78L581.982.722.463.343.865.15.717.298.5250.814.22.563.24.43.985.46.258.239.2311.813.86120.13.624.526.235.637.648.8411.613.116.719.57128.95.26.58.968.091112.716.818.8242881.2536.66.598.4211.410.213.916.121.223.830.435.5101.55810.4131816.22225.533.737.748.156.3121.7584.315.21926.123.63237.148.954.87。81.814211520.725.935.632.243.750.666.774.895.511216215728.335.348.74459.769.191102130152182.519234.643.259.55187384.51151591862(12.524544.155.17668.693.1108147203238222.530354.568.293.984.811513318225129424335363.579.410998.8134155212293342273