A beam lifting crane is a gantry crane specially designed for bridge construction. It can either lift precast beams together with two cranes in coordination or lift precast beams with a single crane equipped with double spreaders. The lifting capacity of each beam lifting crane when two are lifting simultaneously is generally 450 tons, and the lifting capacity of a single beam lifting crane can usually reach 900 tons.​ It is equipped with outrigger traveling, trolley traveling and trolley hoisting equipment, enabling full-range mechanized movements. It is mainly used to lift precast beams from the beam making platform to the beam storage platform, and hoist the precast beams from the beam storage platform to the beam transport vehicle after curing.​ It also serves as hoisting equipment to complete the assembly and disassembly of the bridge erecting machine, and is used for erecting dry bridges with low piers.

The precast beam lifting gantry crane is an essential piece of equipment in the construction industry, playing a pivotal role in the handling of prefabricated beams. Primarily, it is tasked with the crucial operation of transporting precast beams from the beam making site to the beam storage site. At the beam making site, where precast beams are carefully fabricated with precision and quality control in mind, the gantry crane's powerful lifting mechanism swings into action. Equipped with specialized lifting slings or hooks, it gently but firmly secures the precast beams. These beams, which vary in size and weight depending on the specific construction requirements, are then smoothly hoisted off the ground. The crane operator, with the aid of advanced control systems, maneuvers the crane along a designated path towards the beam storage site. This path is often optimized to ensure minimal disruption to other construction activities taking place simultaneously. As the crane approaches the beam storage site, it precisely lowers the precast beams into pre - marked storage positions. This careful placement not only maximizes the use of space in the storage area but also safeguards the integrity of the beams, preventing any potential damage during storage.

Precast Beam Lifting Gantry Crane takes high load-bearing, high precision and strong stability as the core, with obvious advantages in precast beam handling and installation. It adopts a large-span gantry structure, with reasonable stress distribution and strong overall stability, capable of stably lifting heavy precast beams, avoiding beam deformation or damage during handling. The precise positioning device and anti-sway control technology ensure accurate alignment of precast beams with installation positions, improving installation efficiency and quality. It is made of high-strength steel and undergoes strict anti-corrosion treatment, which can adapt to outdoor harsh construction environments, resist wind, rain and dust, and extend the service life of the equipment. The modular design facilitates transportation and on-site assembly, reducing construction preparation time and cost. It is equipped with perfect safety protection devices, including overload protection, anti-collision protection and emergency braking, ensuring the safety of construction personnel and equipment. The operation is simple and easy to master, with stable performance and low failure rate, reducing later maintenance costs and ensuring the continuity of construction progress.