MG (U-shaped) double-girder gantry crane is a GB‑standard general‑purpose heavy‑duty gantry crane. It adopts classic U-shaped flexible outriggers and a double-box main beam structure. It is designed and manufactured in strict accordance with GB/T14406 standards. The entire machine's portal frame has a stable structure, strong load-bearing capacity, and excellent wind resistance. It is specially built for outdoor large-tonnage, large-span, and high-load continuous operation conditions. The equipment does not need to rely on the factory structure, but relies on ground rails to operate independently. It is suitable for various scenarios without building support, such as open-air storage yards, docks, and outdoor factories. Compared with single-girder gantry cranes, this machine has stronger rigidity, more stable operation, and wider tonnage coverage. It can be adapted to high-frequency, heavy-load industrial lifting operations for a long time. It is the main lifting equipment for outdoor heavy material loading, unloading, transfer, and equipment installation.

Core advantages

MG (U-shaped) double-girder gantry crane relies on solid structural design and mature technology to have strong adaptability to working conditions and stability in use: the whole machine is welded and formed with double box-shaped main beams, and is equipped with high-strength U-shaped outriggers. The overall bending resistance, torsion resistance, and wind resistance are excellent, and the structural rigidity far exceeds that of a single-girder gantry crane. There is no shaking or deformation during heavy-load operation, and it can be used for 24 hours of continuous high-intensity operations for a long time; the U-shaped outriggers are scientifically laid out, the passage space is wide, and the passage of materials and vehicles is not restricted. The operating field of vision is broad and the operation is convenient. It is suitable for lifting all kinds of large materials; the equipment adopts a cart-driven structure, and cart‑driven structure with sufficient braking capacity, accurate braking, smooth operation, no impact when starting and stopping, eliminating deviation and slipping problems; the wheel pressure of the whole machine is evenly distributed, strong adaptability to the ground foundation, stable installation, extremely low failure rate, high versatility of core accessories, convenient later maintenance, and low operation and maintenance costs; standard overload limiter, upper & lower stroke limiters, buffer prevention It comes full‑fitted with safety components including overload limiter, upper & lower stroke limiters, buffer, anti‑collision unit, emergency stop and windproof rail clamps to effectively withstand the impact of complex environments such as outdoor strong winds, rain, and snow; it supports multiple modes of ground operation, wireless remote control, and cab control. It can be upgraded with variable frequency speed regulation, intelligent monitoring, cantilever extension, and outdoor anti-corrosion and rain-proof configurations as needed to adapt to various heavy-duty and complex working conditions.

Technical parameters