Lifting 720 Tons: Inside Zoomlion’s Record-Breaking Crane

Building the world’s most ambitious bridges requires more than just raw power—it requires a machine that can defy the laws of physics. In this deep dive, we explore the Zoomlion R20000-720, a record breaking tower crane, and the revolutionary technology keeping it upright.

On the Ma'anshan Yangtze River Bridge, engineers face a lethal combination of 720-metric ton steel segments and unpredictable high-altitude winds. A standard crane would buckle under these torsional stresses, but the R20000-720 uses a "moving counterweight" system to shift its center of gravity in real-time.

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