Nante’s JQG220t-40m Ultra-Low-Profile Launching Gantry Successfully Facilitates Construction Beneath High-Speed ​​Rail Viaducts

What is it like to erect a massive launching gantry—weighing 220 tons with a 40-meter span—beneath an existing high-speed rail viaduct, within an extremely tight vertical clearance of less than 5.3 meters?

Recently, at the construction site of the Xiaoshan High-Speed ​​Rail Viaduct, Nante provided the perfect answer using a “custom-tailored,” high-performance piece of equipment: the JQG220t-40m Ultra-Low-Profile Launching Gantry.

The construction environment for this project was exceptionally unique: an active, bustling high-speed rail viaduct loomed overhead, while new bridge girders awaited installation directly underneath. The vertical clearance was severely restricted, rendering conventional launching gantries completely incapable of operating effectively.

To precisely meet the demands of these rigorous working conditions, the Nante team rose to the challenge. The JQG220t-40m launching gantry features a signature “ultra-low-profile” design that compresses the machine’s overall height to the absolute minimum. Furthermore, it is equipped with a high-precision operating system, ensuring that every girder lift, lateral traverse, and placement is executed with flawless precision.

Upon its deployment to the site, the gantry delivered a stunning performance, earning high praise from the China Railway No. 24 Bureau team. Moving forward, Nante will continue to deepen its expertise in the field of specialized lifting equipment, driven by technological innovation, to provide precise, efficient, and safe customized solutions for an even wider range of challenging engineering projects.