- Jan 25, 2018 -
Gantry crane classification
Gantry crane can be divided into trussed beam gantry crane, box beam gantry crane and honeycomb beam gantry crane according to beam structure.
Trussed beam gantry crane adopts structure form of angle steel or I-steel welding, which has the advantages of low cost, light self weight and good wind resistance. However, due to the lack of welding points and the defects of the truss, the trussed beam also has the disadvantages of large deflection, small rigidity, low reliability and frequent detection of solder joints. It is suitable for working site with low safety requirements and less weight.
2. box girder
Box girder gantry crane adopts welded steel box type structure, has the advantages of high safety, rigidity etc.. It is generally used for large or super large tonnage gantry cranes. The box girder gantry crane also has the disadvantages of high cost, large net weight and poor wind resistance.
3. honeycomb beam
In general, it refers to "isosceles triangular beehive beams", the end of the main beam is triangular, and there are honeycomb holes on both sides of the oblique abdomen and the upper and lower chords. Honeycomb beams absorb the characteristics of truss beams and box beams, which have larger stiffness, smaller deflection and higher reliability than truss beams. But because of the use of steel plate welding, the weight and cost are higher than trussed beam gantry crane. It is suitable for working site that is used frequently or with large lifting weight. Because the beam is a patented product, there is less manufacturer can produce this type.
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