Shandong Land-Sea Equipment Group Ships 4 Rail-Mounted Gantry Cranes in China

en.Wedoany.com Reported - On November 2, the 4 rail-mounted gantry cranes manufactured by Shandong Land-Sea Equipment Group Qingdao Company for Shandong Port Logistics Group were shipped. The equipment adopts the integral transport process using axle-line trailers, with each unit carried by two 12-axle axle-line trailers. After roll-on/roll-off unloading from the vessel, the equipment also needs to complete a 2-kilometer overland transfer from the logistics inspection yard to the smart yard. The batch of equipment was awarded to Shandong Land-Sea Equipment Group Qingdao Co., Ltd. in December 2025, with the contract scope covering design, manufacturing, transportation, installation, and commissioning.

Conventional rail-mounted gantry crane shipping mostly uses split transport by platform vehicles followed by assembly on site, but for equipment with a 37-meter rail span, the dimensions and weight of individual split components still exceed conventional transport limits. This time, integral transport by axle-line trailers is adopted, with each unit simultaneously carried by two 12-axle axle-line trailers, enabling the complete machine to complete overland transport from the manufacturing base to the port without disassembly, shortening the operation time by 2 days compared with the traditional platform vehicle scheme. After roll-on/roll-off unloading, the equipment also needs to be transferred from the logistics inspection yard to the smart yard, with an overland transport distance of approximately 2 kilometers. This connecting segment is also an integral part of the integral transport process, rather than merely addressing the first leg of transport from the manufacturing base to the port.

The approximately 20% weight reduction of the complete machine comes from simultaneous optimization of four structural parts, rather than a single material substitution. The optimization targets include the hoisting mechanism, the trolley load-bearing structure, the gantry frame, and the wheel loads of the traveling wheels. The four parts respectively correspond to the equipment's vertical hoisting, horizontal trolley travel, main frame load bearing, and traveling wheel loads. The combined weight reduction effect reduces the complete machine weight by approximately 20%. This weight reduction directly relates to the axle-line trailer load configuration—each unit requires two 12-axle axle-line trailers rather than one, which is precisely the transport condition determined jointly by the complete machine weight and the 37-meter rail span.

In terms of power supply, the rail-mounted gantry cranes adopt DC conductor rail power supply, equipped with permanent magnet motors and water-cooled frequency converters, and can flexibly allocate mains power and battery power according to operating conditions, rather than relying entirely on a single power source throughout. In terms of anti-sway, the hoisting mechanism adopts a new 8-rope anti-sway reeving process to suppress the sway of the spreader during hoisting and trolley travel, making container alignment more stable.