As we all know that there are many kinds of gantry crane, such as A type gantry crane, semi gantry crane, U type gantry crane, L type gantry crane, rail mounted container gantry crane and rubber-tyre container gantry crane, etc. However, do you know how to choose a siutable gantry crane for yourself?
First, the selection of gantry cranes
In line with the relevant provisions of the general gantry crane GB/T14406-1993 and GB5905-86.
Under normal circumstances, the lifting weight is less than 50t and the span is within 35m. There is no special requirement for use, and a single girder type should be used. If it is required that the width of the door legs is large, the working speed is high, or heavy items or long and large pieces are often hoisted, double-girder gantry cranes should be selected.
Second, span and cantilever length
The span of a gantry crane is an important factor that affects the quality of the crane itself. In the selection, the span should be minimized on the premise of satisfying the conditions of equipment use and meeting the span series standards.
Third, the principle of wheel alignment
(a) It can meet the stability requirements of the gantry in the direction of the crane track;
(b) The size of the cargo must be able to pass through the leg flat steel frame smoothly;
(c) Pay attention to make the distance between track B and span S in a certain proportion, generally take the track distance B = (1/4 - 1/6)S.
Four, gantry crane spacing size determination
In the work, there should be a certain space size between the external dimensions of the gantry crane and the cargo of the yard and the passage of the transport vehicle to facilitate loading and unloading operations. When a typical transport vehicle is loaded or unloaded within a span, it should be kept at a distance of more than 0.7m from the door legs. When the spreader is not working, it should have a spacing of more than 0.5m from the transport vehicle, and when the goods pass the door legs, there should be a spacing of more than 0.5m.