Project Reference

Client Project: Zhangjinggao Yangtze River Bridge (World-class Super Suspension Bridge Project, Jiangsu, China)

Supplier: Henan Mine Crane Co., Ltd. (Henan Mine Crane, short as Henan Mine)

Product Delivered: Customized 700-ton Large Gantry Crane (plus sets of auxiliary lifting equipment including 300t overhead cranes).

Project Completion Milestone: The 700t gantry crane successfully passed full-type inspection and was officially put into operation for steel pylon hoisting work.

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1. Project Background

Zhangjinggao Yangtze River Bridge is a landmark mega cross-river transportation project under China’s 14th Five-Year Plan, connecting Zhangjiagang (Suzhou), Jingjiang (Taizhou) and Rugao (Nantong) in Jiangsu Province. The south navigation channel main span reaches 2300 meters, ranking the world’s longest suspension bridge span, with six world-leading technical records including the world’s tallest suspension bridge pylon at 350 meters (equal to a 125-floor high-rise building). This ultra-high steel main pylon brings extremely strict requirements on large-tonnage, high-precision and high-safety hoisting equipment for on-site steel component installation.

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As a core lifting equipment provider for the bridge’s steel tower construction section, Henan Mine was selected to develop tailor-made 700t gantry crane after winning the tender. This cooperation marks Henan Mine’s fourth key supporting project for China’s major Yangtze River bridge construction, following Jianzhou Bridge, Changtai Yangtze River Bridge and Ma’anshan Yangtze River Highway-Railway Bridge projects.

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2. Product Development & Core Technical Highlights

The 700-ton engineering gantry crane is independently R&D and manufactured by Henan Mine adopting domestic cutting-edge configurations, new lightweight materials and advanced manufacturing techniques, characterized by lightweight structure, universal modular design, energy conservation & environmental protection and high intelligent integration, targeting large span, high lifting height and heavy-load hoisting scenarios for super bridge construction. Four core intelligent technical advantages guarantee stable on-site operation:

1. PLC + Inverter Full Communication Control: Whole crane system is driven by PLC and frequency conversion control system to realize smooth start-stop and stable traveling, effectively avoiding load jitter and improving overall operation safety reliability.

2. Multi-lifting-point Synchronous Auto-balancing System: Multiple hoisting points run synchronously with real-time automatic balance adjustment, cutting unnecessary energy loss and boosting overall hoisting efficiency for oversized steel tower segments.

3. Full-fiber Optic Signal Transmission: The whole equipment adopts fiber optic communication instead of traditional cable transmission to eliminate electromagnetic signal interference, achieving high electrical integration and stable long-distance signal delivery on complex construction sites.

4. Embedded Automatic Positioning System: Built-in high-precision auto positioning module enables millimeter-level positioning during component lifting, fully satisfying the ultra-high dimensional tolerance standard of world-class super bridge steel structure installation.

Besides the flagship 700t gantry crane, Henan Mine also supplied matching 300t overhead cranes to assist auxiliary component turnover and lifting at the prefabrication yard of the bridge project.

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3. On-site Application & Project Value

All customized cranes from Henan Mine are deployed on the construction site for hoisting the ultra-large steel components of the 350m-high main water pylon and other key bridge structures of Zhangjinggao Yangtze River Bridge.

• Construction Efficiency Improvement: Intelligent synchronous control shortens single-piece hoisting cycle by nearly 20% compared with conventional large gantry cranes, greatly accelerating the main steel tower assembly progress.

• Cost & Energy Saving: Frequency conversion + lightweight design reduces comprehensive power consumption by over 15% during long-term continuous operation, lowering the project’s construction operation cost.

• Safety Risk Control: Integrated positioning and anti-sway technology minimizes collision risk of oversized steel parts during high-altitude lifting, zero major hoisting safety accident recorded since equipment commissioning.

Reliable equipment performance provides solid mechanical support for the construction of the world-record suspension bridge, winning consistent positive recognition from the project general contractor and construction management team.

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4. Corporate Brand Significance of the Case

This successful delivery of 700t gantry crane for Zhangjinggao Yangtze River Bridge further consolidates Henan Mine’s position as preferred lifting equipment supplier for China’s national key projects including large-scale bridges, aerospace and military engineering fields. Adhering to the corporate quality philosophy of “Only Manufacture Premium Products”, Henan Mine continues to upgrade intelligent heavy-duty crane technology and export high-quality Chinese hoisting equipment solutions for domestic and global large infrastructure projects, promoting high-quality development of China’s hoisting machinery industry