《煤矿掘进工作面JD》由会员分享，可在线阅读，更多相关《煤矿掘进工作面JD（10页珍藏版）》请在金锄头文库上搜索。
1、JD-25绞车一次牵引矿车数计算说明一、基本参数1、掘进工作面JD-25型调度绞车参数：牵引力18KN、钢丝绳直径15.5mm、平均绳速1.10m/s、最大绳速 1.08m/s、最小绳速 0.433m/s、容绳量 400m。2、配用钢丝绳6X19X15.5参数：钢丝绳直径d= 15.5mm，总断面积57.27mm2，钢丝绳单位长度重量 Pb=0.845kg/m，钢丝绳公称抗拉强度170kg/mm2，钢丝绳破断拉力总和Q =15200kg。3、U型固定车箱矿车参数：容积1.1 m3、名义载重量1t；空车自重Q=618kg、单车煤重量Q煤=1000 kg、单车矸重量Q砰石=1700 kg、单车煤矸
2、重量Q煤砰=1350 kg。4、7.5m3V型翻斗式矿车参数：名义载重量0.7t、最大载重量1.2t、空车自重Q=514kg、单车煤重量 Q煤=700 kg、单车矸重量Q砰石=1190 kg、单车煤矸重量Q煤砰=945kg。二、JD-25型调度绞车一次牵引矿车数计算：JD-25型调度绞车一次牵引矿车数主要是根据钢丝绳最大拉力确定，对 钢丝绳实际拉力的限制条件主要有三个：1、安全系数的限制根据煤矿安全规程规定，钢丝绳的安全系数应N6.5，钢丝绳实际 所受最大拉力应小于其破断拉力总和Qp的6.5倍，应为：Fmax=Qp / 6.5 = 15200kg / 6.5=2338kg=22917N。2、绞
3、车牵引力的限制条件JD-25型调度绞车最大牵引力为F额=18KN=18000N。3、功率的限制条件绞车的实际功率应不大于其额定功率？额即：NP额N= FmaV102nX 1.1 P =25KW额V绞车最大绳速，n绞车工作效率，取 85%；P x 102 x门 则有 F max=Fr25 x 102 x 85%=1791322N1.10 x 1.13、绞车一次牵引矿车数计算由上述可知，JD-25型调度绞车最大钢丝绳牵引力应为Fmax=18000N。则确定JD-25型调度绞车一次牵引最大矿车数:F Nn (Q +Q) (sinB+fcosB) +P L (sin B+fcos B) X1.1max
4、r1b2B轨道最大工作坡度，取值范围020。，可分别验算;L钢丝绳工作长度，取300 m； f1矿车阻力系数，取0.015； f2钢丝绳阻力系数，取0.20；Qr为单车煤或矸石或煤矸的重量，可分别验算;n煤或矸石或煤矸的数量;1.1备用安全系数。计算结果如下:JD-25型调度绞车一次牵引U型固定车箱矿车（空车）最多数目计算表n（Qr+Q）BsinB+f cosBsinB+f2cosB(Qr+Q)(sinB+f cosB)g =1P,L(sinB+fcCosB)g44618010.0150.20090.846317.5203361810.0320.217196.531345.1792661820
5、.0500.235302.156372.7332261830.0670.252407.689400.1731961840.0850.269513.098427.4921661850.1020.286618.350454.6801461860.1190.303723.415481.7301361870.1370.320828.258508.6331261880.1540.337932.850535.3811161890.1710.3541037.157561.96610618100.1880.3711141.149588.3809618110.2060.3871244.793614.615961
6、8120.2230.4041348.057640.6628618130.2400.4201450.911666.5148618140.2560.4361553.323692.1647618150.2730.4521655.262717.6027618160.2900.4681756.697742.8226618170.3070.4841857.596767.8156618180.3230.4991957.930792.5756618190.3400.5152057.668817.0936618200.3560.5302156.778841.362JD-25型调度绞车一次牵引U型固定车箱矿车（煤
7、车）最多数目计算表n(Qr+Q)BsinB+f cosBsinB+f cosB(Qr+Q)(sinB+f cosB)gP, L(sinB+fcosB)g321618010.01520.200z:1237.846b2317.52020161810.0320.217514.542345.17915161820.0500.235791.081372.73312161830.0670.2521067.380400.17310161840.0850.2691343.353427.4928161850.1020.2861618.917454.6807161860.1190.3031893.988481.7
8、306161870.1370.3202168.482508.6336161880.1540.3372442.316535.3815161890.1710.3542715.405561.96651618100.1880.3712987.668588.38041618110.2060.3873259.020614.61541618120.2230.4043529.379640.66241618130.2400.4203798.664666.51431618140.2560.4364066.791692.16431618150.2730.4524333.680717.60231618160.2900
9、.4684599.248742.82231618170.3070.4844863.416767.81531618180.3230.4995126.102792.57521618190.3400.5155387.227817.09321618200.3560.5305646.710841.362JD-25型调度绞车一次牵引U型固定车箱矿车（煤矸车）最多数目计算表n（Qr+Q）8sin8+f cos8sin8+f cos8(Qr+Q)(sinB+f.cosB)gP, L(sinB+fcosB)g291968010.01520.2001v289.296b2w317.52018196810.0320.
10、217625.846345.17913196820.0500.235962.205372.73310196830.0670.2521298.272400.1738196840.0850.2691633.943427.4927196850.1020.2861969.116454.6806196860.1190.3032303.689481.7305196870.1370.3202637.561508.6335196880.1540.3372970.629535.381_196890.1710.3543302.792561.96641968100.1880.3713633.949588.38031
11、968110.2060.3873963.999614.61531968120.2230.4044292.842640.66231968130.2400.4204620.377666.51431968140.2560.4364946.505692.16431968150.2730.4525271.126717.60221968160.2900.4685594.141742.82221968170.3070.4845915.453767.81521968180.3230.4996234.962792.57521968190.3400.5156552.572817.09321968200.3560.
12、5306868.187841.362JD-25型调度绞车一次牵引U型固定车箱矿车（矸车）最多数目计算表n(Qr+Q)8sin8+f cos8sin8+f2cos8(Qr+Q)(sin8+f cos8)gP, L(sin8+fcos8)g272318010.0150.200:1340.746b2317.52016231810.0320.217737.150345.17911231820.0500.2351133.329372.7339231830.0670.2521529.164400.1737231840.0850.2691924.532427.4926231850.1020.2862319.314454.6805231860.1190.3032713.390481.7304231870.1370.3203106.639508.6334231880.1540.3373498.942535.381423189
