Comparing with Europe and the United States, this Zoomlion 3200-ton crane can lift the heaviest nuclear power dome in the world

Lead: There are hundreds of embedded sensors on the crawler crane, which can sense pressure, load, speed, etc., and automatically adjust the operating parameters, and the accuracy is even less than 2 mm, which is stable and accurate. In the lifting construction of the Tianwan nuclear power plant, Zoomlion’s 3,200-ton crawler can lift a 44-meter-diameter, nearly 500-ton dome, thanks to the “brain” sensor.

Today, we have come to a serious discussion about "come on and off", of course, not the wording of the article, but the continuous action of the crawler crane - lifting, luffing, front and rear car cross walk, drop hook, and thus, a weighing 500 tons Nuclear power domes “precisely” landed on top of the reactor. This “start-and-turn” coherent action is perfect!

This is the total lifting capacity of the steel lining of the containment vessel with a total capacity of nearly 500 tons of Unit 3 of the Tianwan Nuclear Power Station, the largest nuclear power plant in China with the largest single capacity, completed on December 20, 2014.

This is the world's heaviest nuclear power dome hoisting, and lifting this huge dome is Zoomlion's domestic 3000-ton crawler crane, which is its first successful application in the field of nuclear power.

Zoomlion’s large-tonnage crawler cranes have their own serial numbers—the ZCC3200NP. It has three “earliest”: the first 3,000-ton crawler cranes that are the first to go offline, complete the first tests, and reach the first sales status. With a lifting weight of up to 3,200 tons, it can be applied to the construction of super large-scale projects such as AP1000 third-generation nuclear power hoisting and petrochemical engineering. It is precisely because of this that it has developed a close relationship with nuclear power since the beginning of R&D.

Breakthrough bottleneck for the third generation of nuclear power hoisting

Crawler cranes are mobile cranes that are widely used in large projects such as ports, hydropower, railways, nuclear power, and petrochemicals.

For a long period of time in the past, China’s nuclear power technology has been gradually transitioning from the second generation to the third generation. The so-called second-generation and third-generation companies can understand that third-generation nuclear power is safer and more advanced. As the third-generation nuclear power technology AP1000 continues to mature, China has also begun to establish several third-generation nuclear power plants, which requires large-tonnage cranes.

This kind of "big thing", especially those with a capacity of over 3,000 tons, was able to achieve the third generation of nuclear power cranes that depended on imports. The world's professional manufacturers of crawler cranes are mainly concentrated in three industrially developed countries such as the United States, Germany, and Japan, such as Manitowoc in the United States, Liebherr in Germany, and Hitachi Sumitomo in Japan. Foreign companies have built a solid intellectual property barrier in this area, which is the technical blockade.

Therefore, in order to completely get rid of the status quo afflicted by people, China-made large-tonnage crawler cranes with completely independent property rights

Zoomlion ZCC3200NP was born. It has increased the power of domestic construction machinery companies in the world of crawler cranes. Once again, the maximum lifting quality record of domestic crawler cranes was broken, and it also broke the monopoly of foreign 3,000-ton crawler cranes.

It is itself a "huge project"

How do you ensure the overall stability of a suspended ceiling of a crane? The ZCC3200NP crawler crane broke through the design concept of the traditional crawler crane and adopted the overall scheme of a parallel-armed double-armed frame + front-rear crawler, which enabled the crane to achieve a breakthrough in overall stability and anti-rollover capability, and significantly improved safety performance.

This is just a breakthrough for the ZCC3200NP crawler crane. This "big guy" is extremely complex. It is a perfect combination of large-scale steel structure design and production technology, hydraulic control technology, engine control technology, modern electronic technology and network control technology.

For example, in order to ensure convenient disassembly and transportation, the crane structure adopts a modular design method; in order to achieve the smooth assembly of the entire machine, the design process fully considers the processing precision and the assembly process sequence of each component, and adopts a three-dimensional animation simulation technology. Car assembly simulation was performed.

Take the three power units and control system technology, the vehicle has three independent power units: front, rear, and car. Front and rear cars can be assembled and split at the same time, improving the efficiency of disassembly and assembly. Three sets of power systems can operate independently when hoisted. The main control room is responsible for the “overall control”, which can avoid the connection of the power lines between the front and rear cars, and getting on and off, and reduce the points of failure. And the components between the three power units are also interchangeable, improving the reliability of the whole machine.

Zoomlion ZCC3200NP crawler crane has obtained more than 50 independent intellectual property rights, including more than 20 invention patents. The series of related core technologies has broken through the design bottleneck of domestic heavy-duty crawler cranes and promoted the progress and development of the industry technology. Won the "2011 China Construction Machinery Annual Product TOP50 Technology Innovation Award."

Even more details of innovations determine success or failure

In addition to the core design breakthroughs, the designers of the ZCC3200NP have added many eye-catching detail innovations.

"Too fat" will "lose weight"

Traditional crawler cranes have the advantages of arm length, lifting torque, carrying capacity and ability to adapt to bad terrain that the latter cannot replace. However, it also has a prominent disadvantage - poor mobility, said plainly, because "too fat", disassembly and transportation are not convenient.

For large cranes, if it is inconvenient to dismantle, then this monster can be really "hard to move."

It is not easy to disassemble, so "modular design" came into being. The weight and overall dimensions of a single module allow it to meet the requirements of road transport. This facilitates transportation, assembly, and disassembly, and the work efficiency is naturally improved.

Crane actually has "brain"?

In the lifting construction of the Tianwan Nuclear Power Station, a 3,200-ton crawler can be hoisted on a 44-meter-diameter, nearly 500-ton dome, based on its "brain" sensor. Its body has hundreds of embedded sensors, can sense the pressure, load, speed, etc., automatically adjust the operating parameters, and the accuracy is even less than 2 mm, and "steady" and "precise."

The sensors can acquire the motion characteristics of the equipment in real time, diagnose the health status of the equipment, and sense the external operating environment. This has important significance for improving the efficiency of construction operations, improving construction quality, and ensuring operation safety. This "brain" is really not a white installation.

Europe and the United States "Great Power" is particularly busy

In addition to the first successful application of the ZCC3200NP we mentioned at the beginning, in the first half of 2015, it was also perfectly hoisted at the Shidao Bay nuclear power plant. In September, it returned to Tianwan to force the successful lifting of the world’s heaviest nuclear power thin-shell dome, which was built side by side with No. 3 unit, the dome of No. 4 unit, and achieved the deep application of domestically produced 3000-ton crawler cranes in the field of nuclear power. .

On March 20, 2016, Zoomlion ZCC3200NP crawler crane helped Shandong Rongcheng Huaneng Shidao Bay nuclear power station project again. It successfully hoisted the world’s first 4th generation nuclear power plant reactor pressure vessel, marking the construction of China’s high temperature gas-cooled reactor demonstration project and nuclear power. Major breakthroughs have been made in equipment manufacturing.

In 2017, it also successfully lifted the “Hualong 1” dome in Fuqing, Fujian, which is a perfect combination of the two major powers.

A head of Zoomlion’s Crawler Crane proudly stated: “The fact that more than three years of various tests and the actual use of two nuclear power projects proves that we have been able to compete with international giants in this area.” (This Article From Zoomlion)