width 12[m] "桥宽"
height 5[m] "起重机高度"
columnDistance 2[m] "柱基点间距"
trolleyWidth 0.8[m] "吊车宽度"
trolleyPos 3[m] "吊车中心"
trolleyWeight 200[kg] "吊车重量"
payload 15[ton] "吊车承载的有效载荷"
maxTemp 50[degC] "最高使用温度"