Break through the technical ceiling! Zoomlion 4,000-ton all-ground crane shines on "above the dome"

Ten years ago, the doubts about "China cannot build 1,000-ton equipment" were still heard; ten years later, the 4,000-ton all-ground crane made in China has led the world and become a benchmark for large-tonnage cranes.

After setting two world records in 2000-ton and 2400-ton, Zoomlion continues to surpass itself and sets a world record for the third time with a 4000-ton all-ground crane! This is also the only all-ground crane in the world that can meet the installation of fan heights of 190 meters and above, leading the industry into a new era of 4,000 tons.

Break through the limits of traditional chassis, it is not about compromise or reconstruction

In recent years, under the guidance of the "dual carbon" goal, my country's onshore wind turbines have developed towards large-scale and efficient directions. The fan power continues to be upgraded, and the tower height, impeller diameter, and fan weight increase accordingly, which also puts higher requirements on the performance of all-ground cranes.

As a milestone in Zoomlion's "technological deep water zone", the 4,000-ton all-ground crane was specially designed for the lifting of super-high-power wind turbines onshore. With the compact chassis design, it can easily achieve convenient transitions, and at the same time, the rapid disassembly and assembly mode reduces the demand for assembly sites by 40%, breaking the traditional constraints of super-large tonnage cranes that can only "operate on-site and transfer in sections" and achieving multiple breakthroughs of "on-road compliance and convenient transportation".

Developed based on the national standard of all-ground cranes, it has a standard 3-meter wide and 22.5-meter long all-ground chassis, which is more suitable for narrow areas such as mountain wind farms; the vehicle with full arms is 6m in height, low center of gravity, good passability and strong adaptability; at the same time, it is equipped with an all-wheel steering and hybrid suspension system, and combined with intelligent algorithms, it can adjust the center of gravity in real time in complex terrain, ensuring that the vehicle does not overturn with heavy loads and passes safely and flexibly.

In addition, this "super equipment" chassis abandons the traditional simple magnification method, adoptsThe system-wide collaborative design is used, and through the uneven intertwined frame, hybrid suspension, and integrated design of the whole machine, the limitations of road regulations such as vehicle size and self-weight are fundamentally solved. The limits of 9 bridges are extended to 10 bridges, and the chassis load-bearing capacity is strengthened. It is the only equipment in the same tonnage that can be directly on the road. At the same time, in order to meet the mountain transition driving and climbing power requirements under heavy load states, Zoomlion has invented a power chain of independent hydraulic drive reducer unit + double-axle drive, combined with multi-power machine-hydraulic hybrid drive, adaptive matching control according to terrain and load changes, achieving high maneuverability and worry-free transition of all terrain on complex roads such as longitudinal slopes, transverse slopes, sand and gravel bumps.

It is capable of raising a lot of tremendous abilities, but also able to do "embroidery skills"

"The installation height of large-scale land wind turbines is 180~200 meters and lifting weight is nearly 200 tons. According to professional standards, it requires a 4,000-ton all-ground crane. At present, it can lift fan nacelles of 5 meters wide, 12 meters long, and more than 160 tons of weight and impellers with diameters of more than 190 meters at a height of 190 meters." Luo Xianzhi, director of the Global R&D Center of Zoomlion Engineering Crane Branch, introduced.

As the world's first 4000-ton all-ground crane that meets the overall lifting of "190m height and 16MW fan", it has the following core advantages::

Affordable: Ultra-long main arm and innovative reinforcement arm technology can independently complete the integrated lifting of fan impellers at 190 meters height; Fast lifting: Single-arm autonomous lifting technology, saving customers the cost of two auxiliary lifting in a certain 160 meters height lifting; Stable lifting: The arm system is combined with active adaptive deviation correction control and high-precision control technology in wide temperature environments, and can still maintain millimeter-level operating accuracy even in extreme environments such as strong wind, strong sun exposure, and high temperature difference.

In addition, Zoomlion has reserved sufficient space for wind power upgrades with technical redundancy to meet the future trend of large-scale onshore wind power. This innovation not only brings about efficiency improvement, but also subversion of the entire wind power construction model, providing a "one-in-place" solution for hoisting wind power units of more than 200 tons and more than 190 meters.

From following to leading the way, the technological leap of super-large tonnage cranes

Once upon a time, the crane field was dominated by European and American companies, and the lifting capacity of a single equipment reached 1,200 tons was regarded as the limit. However, Zoomlion never believed in the "ceiling". Since the development of a thousand-ton crane in 2008, it has continuously broken through the limit, truly achieving the transition from following to running side by side, and then to leading.

Looking back at the beginning of the 21st century, the domestic largest tonnage all-ground crane was only 100 tons; in 2012, Zoomlion successfully developed the world's largest tonnage 2,000 tons at that time, and successfully delivered the world's largest tonnage 2,400 tons at that time in 2022; two years later, the 4,000 tons all-ground crane entered the public's vision... This is not a simple increase in numbers, but an upgrade and iteration of technology.

From being ridiculed for being "not able to build a thousand tons" to the global first launch of 4,000 tons all-ground cranes, Zoomlion has used independent innovation to grind the technical bottleneck into a shining medal.

It is worth mentioning that through collaborative innovation of the entire industrial chain, the key components of Zoomlion's 4,000-ton all-ground crane have been 100% domestically produced. By establishing an independent supply chain and integrating upstream and downstream resources, we have truly achieved independent control in the entire chain from design to manufacturing, and achieved the transformation from single-point breakthrough to systematic innovation.

As a vivid footnote to Zoomlion's practice of new quality productivity, the 4,000-ton all-ground crane has provided a new solution for my country's ultra-high fan installation, breaking the technological monopoly of foreign giants in the field of super-large equipment, vigorously driving the independent development of domestic high-end components, promoting the transformation of the industrial chain to independent, high-end and intelligent, and allowing China's manufacturing to stand up in the field of "hard technology"!

The birth of Zoomlion's 4,000-ton all-ground crane is not the end but a new starting point. It uses the disruptive design of "legal on the road" to prove that the technical barriers are notIt relies on tonnage accumulation, but on innovation that breaks the fixed thinking pattern; it declares that China's manufacturing has long passed the stage of "can be made" and is defining the global standard of "good creation"!

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