First, the selection of gantry crane
It conforms to the relevant provisions of the universal gantry crane GB / T14406-1993 and GB5905-86.
Under normal circumstances, from the weight of 50t below the span of 35m or less, no special use requirements, should use a single main beam type. If the requirements of the door width, work speed is high, or often lifting heavy pieces, long pieces, you should choose double beam gantry crane.
Second, span and cantilever length
The span of gantry cranes is an important factor affecting the quality of the crane itself. In the selection, the span should be minimized, subject to the conditions of use of the equipment and compliance with the span series.
Third, the principle of determining the track
(A) to meet the stability requirements of the gantry along the direction of the crane track;
(B) the outer dimensions of the cargo shall pass smoothly through the outrigger steel frame;
(C) Note that the track B and span S into a certain proportion of the relationship between the general take the track B = (1 / 4-1 / 6) S.