(1) According to the main girder classification, general gantry cranes can be divided into single main girder gantry cranes and double main girder gantry cranes. (2) According to cantilever classification, general-purpose gantry cranes can be divided into single-cantilever gantry cranes, double-cantilever gantry cranes and non-cantilever gantry cranes.

Shipbuilding gantry cranes are common hull lifting and assembly equipment in shipbuilding ports and terminals. With the rapid development of transport ships and their increasingly large size, shipbuilding gantry cranes are developing in the direction of large size, high speed and heavy load.

The gantry crane is a bridge-type crane in which the horizontal bridge is set on two legs to form a gantry shape. This kind of crane runs on ground tracks and is mainly used for handling and installation operations in open storage yards, shipyards, power stations, ports, railway cargo stations, etc.

At present, the lifting height of conventionally produced outdoor gantry cranes is generally 12-20 meters. In actual use, users often put forward higher lifting height requirements. There are several common solutions to solve the problem of large lifting height of outdoor gantry cranes.

Rubber tire gantry crane is a common lifting equipment and a thriving equipment in industrial production. It adopts a rubber tire structure, so it has good mobility and flexibility, can be operated on various complex sites, and is very convenient to install and disassemble. Therefore, rubber tire gantry cranes are widely used in many fields, such as construction sites, docks, ports, logistics parks, photovoltaic power generation and other fields.

Compared with general cranes, intelligent cranes have artificial intelligence, which replaces or assists human mental labor on the basis of replacing human physical labor. By integrating sensors with intelligent decision-making software and cranes, perception, analysis, reasoning, decision-making, and control are achieved Function, achieving interaction and integration between humans and objects, replacing manual perception, decision-making, and execution, enabling the crane to adapt to changes in the working environment. Its workflow is the same as that of a general crane, but the added intelligent control can replace human vision, hearing, and smell Sensory organs such as the senses and limbs replace the operator's judgment to make corresponding actions, completing recognition, perception, operation, and management during the operation of the crane.