Portal crane

The utility model relates to a portal crane, comprising a base plate, be equipped with a pair of stand on the bottom plate, be equipped with the truss on this stand, the stand side is equipped with the guide rail, the truss back is equipped with the connecting plate, this connecting plate with the guide rail offsets, the stand inboard is equipped with the balancing weight, be equipped with the synchronizing wheel on the stand up end, be equipped with the hold -in range on this synchronizing wheel, this hold -in range with the balancing weight links to each other, the terminal surface is equipped with the slider under the truss, through setting up guide rail, slider for the left and right sides of control product reciprocates, through setting up synchronizing wheel, hold -in range and balancing weight for supplementary guide rail reciprocates, and the balancing weight is adjusted according to the weight of product, the utility model relates to a rationally, little, with low costs, the easy maintenance of area,