1. Girder structureSingle girder and double girder are different; Different main beam structure, bearing capacity is different, if it is often lifting 5 tons, appropriate to buy some larger, to avoid a certain overload, unable to complete the work, more embarrassing.

Main beam structure Single girder and double girder are different; different main girder structures have different bearing capacities. If it is often lifted 5 tons, it is appropriate to buy a larger one to avoid a certain overload and unable to complete the operation

The gantry crane is based on the bridge crane, and the appearance design has been changed and modified. Most are used outdoors, often installed in cargo yards, ports, etc. to load and unload cargo. It is widely used and has many classifications.

First, according to the gantry frame structure1. Full gantry crane: the main beam has no overhang, and the trolley is carried out within the main span;2. Half-door crane: The height of the legs is different, which can be determined according to the civil construction requirements of the site.

The gantry crane is a bridge type crane whose bridge girder is supported on the ground track by the legs on both sides.