单梁起重机大多数的情况下需要选择的起重量的在50t以下的，并且跨度是在35米之内的，并且没有其他特殊的使用要求。可以选用单主梁式的。不同的起重机在选择轮距的要求有什么原则。
Single girder crane most of the need to choose the weight of below 50t, and the span is 35 meters, and no other special requirements. You can use a single main beam. The different requirements of crane in the choice between what principle.
1、可以满足门架沿的单梁起重机轨道方向的稳定性上的要求；
The stability of 1, can satisfy the single beam crane rail gantry along the direction of the requirements on the;
2、货物的外形尺寸是要可以顺利的通过支腿的平面钢架与运行，这个是需要注意的。
Size 2, the goods is to be plane steel frame and the operation can be smoothly through the legs,this is the need to pay attention to.
3、需要注意轮距B与跨度S成的比例关系，一般的取轮距B=（1/4—1/6）S，在选择的是需要计算好。
3, the need to pay attention to the ratio of S to B and the span between track, track B= general(1/4 1/6) S, in the choice of is the need to calculate the.
4、最后还需要相同型号的设备轮距。单梁起重机配件在选择的使用也需要根据起重机的类型里进行选择。
4, finally also require the same type of equipment base. Single girder crane accessories in the choice of use also need to choose according to type.
单梁起重机：http://www.kenuoqizhong.cn/