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How strong are Chinese excavators?

How strong are Chinese excavators?

Excavator,many people have seen it, but the excavator here about currently is very special. It is very large, with a total length of 23.5 meters. What is the concept? It can be said that it is close to the largest creature on earth. The length of an adult blue whale is very strong, and it can dig up more than 50 tons of coal with a bucket. All the manufacturing and technology of this amazing hunk is China.

On April 2, China Mechanical Excavator’s 700-ton hydraulic excavator successfully rolled off the assembly line. The weight of this giant is equivalent to 500 ordinary cars, and the power exceeds that of two Type 99 main battle tanks. 100 people can stand in the bucket at the same time, and when the bucket goes down, more than 50 tons of coal can be dug.

China Construction Machinery’s 700-ton hydraulic excavator is the largest tonnage hydraulic excavator independently developed by China. In these high-end equipment fields, Chinese machinery will compete face-to-face with world-class masters.

Not only is the tall appearance eye-catching, but the “connotation” of this “big guy” is even more attractive. From components to operating systems, it has 52 independent patents, which is the first time that China has realized the centralized application of key core technologies in the field of super large hydraulic excavators. China has become the fourth country in the world with the ability to develop and manufacture hydraulic excavators with a capacity of more than 700 tons after Germany, Japan and the United States, breaking the monopoly of foreign brands.

According to the design requirements, this “big man” must ensure at least 60,000 hours of safe operation time when operating in the mine, and at least 30,000 tons of materials need to be mined every day. To achieve such a standard, the design and manufacturing requirements of the excavator chassis are very high. If foreign companies provide it, it will be at least 15 million yuan. Since the core technology has been monopolized by international giant companies for a long time, it is learned that Chinese companies also need to develop super large After the tonnage of excavators, foreign suppliers are not willing to provide their chassis to China at all.

Our R&D personnel made up their minds to develop the chassis by themselves, and it took five years to finally overcome the problem, filling the gap in the R&D and manufacturing of large-scale hydraulic excavators in China.

In addition to the large-scale components such as “four wheels and one belt”, as the core component, another core component used in this 700-ton hydraulic excavator, the hydraulic cylinder is also independently developed and manufactured in my country.

If an excavator is compared to a person, then the boom, stick and bucket are the arms and hands of the excavator, and the hydraulic cylinder is equivalent to the muscles on the arm and hand of a person. The strength and efficiency of the excavator are very important. The extent depends on the hydraulic cylinder. The successful development of the 700-ton hydraulic excavator hydraulic cylinder not only successfully broke the monopoly, but also quickly lowered the price in the international market.

According to the previous import of 700 tons of cylinders, a set needs about 3 million yuan, now if the pure import, reduced by about 30%, around 2 million to 2.1 million yuan.

The strong industrial base project, one of the five major projects of Made in China 2025, clearly requires that by 2020, 40% of core basic parts and components and key basic materials will be guaranteed independently, and the situation of being subject to others will gradually be eased. Advanced manufacturing processes for core basic components, components and key basic materials urgently needed in aerospace equipment, communications equipment, power generation and transmission equipment, construction machinery, rail transit equipment, household appliances and other industries have been popularized and applied.

By 2025, 70% of the core basic components and key basic materials will be independently guaranteed, and 80 iconic advanced technologies will be promoted and applied, some of which will reach the international leading level.

The research and development personnel of Chinese machinery unanimously believe that if the core technology of heavy industrial machinery is obtained from other countries, it will definitely not be obtained. We must understand this core thing, which must be done by ourselves and independent research and development, so we start from the material, and the production and technology need to be improved. The main parts of the excavator sprocket, carrier roller, idler, The production technology of track link assy, track shoes, track rollers and other products must be refined, and the craftsmanship of these products must be excellent. Whether it is from the casting process or the forging process, special research and follow-up processes must be strengthened. The test of equipment and craftsmanship will not be restricted by foreign countries until we make this product.

The positioning of China’s construction machinery is to move from the low-end to the high-end. When achieving the goal of the high-end, we must break through the problem of technology and achieve independent innovation in order to achieve our own goals.

Statistics show that for a long time in the past, the import cost of key components such as engines, transmission systems, hydraulic components, and control components accounted for more than 40% of the manufacturing cost, and nearly 70% of the industry’s profits were captured by foreign investors. The construction machinery industry suffers from the weak industrial foundation of high-end core components, which can be described as “like a sting in the throat”. However, after decades of accumulation and unremitting efforts, this situation is changing.

At present, all the supporting products of China’s mechanical excavators and bulldozers have been exported to 158 countries and regions in the world, and more than 280 overseas agents have been established around the world. In 2017, the export of excavator-related products along the Belt and Roadincreased significantly, with an increase of 51% in Central Asia, 119% in Africa, 107% in West Asia and North Africa, and an 80% year-on-year increase in Asia Pacific.

China Machinery is winning more and more customers. Whenever a Chinese company breaks the monopoly and conquers a model of equipment, the price of the entire industry will undergo a substantial adjustment.

Chinese machinery is winning more and more customers. Every time Chinese companies break the monopoly and conquer a model of equipment, there will be a big adjustment in the price of the whole industry.

The construction machinery crane industry is like this. As long as the tonnage is not produced in China, the foreign price is very high. When we did not have 300 tons, the imported cranes sold 23 million. After our 300 tons came out, we sold 13 million. At the time, imported cranes sold for more than 15 million, 23 million to 15 million, and 8 million were gone. The price of the United States, Germany or Japan fell immediately.

In fact, the investment of Chinese machinery R&D personnel in the field of research and development has been increasing continuously, and the annual investment in research and development has been stable at more than 5% of sales revenue. At present, the research scope has covered more than a dozen aspects such as hydraulic technology, transmission technology, intelligent control technology, complete machine technology, and industrial design technology. However, there is still a long way to go for China’s construction machinery to compete with international brands in an all-round way.

China’s manufacturing industry is now at a key hurdle and a key node, that is, a hurdle from big to strong. We must have our own sober minds, and we should not be blindly optimistic about the achievements and foundations we have achieved in the past. We must not underestimate the gap we currently have. In terms of independent innovation, investment in research and development, and breakthroughs in core technologies. Half-hour observation: core technology cannot be bought

In December 2017, Chinese leaders once pointed out that the equipment manufacturing industry is the backbone of the manufacturing industry. It is necessary to increase investment, strengthen research and development, and accelerate development, strive to occupy the commanding heights of the world, and control the right to speak in technology, so that my country will become a major country in the modern equipment manufacturing industry. . Innovation is the source of an enterprise’s core competitiveness, and many core technologies cannot be sought or bought.

Large-scale open-pit mining machinery is the core component of the “crown jewel” of the high-end equipment industry, representing the highest technical level in the industry. After years of unremitting innovation, my country’s large-scale open-pit mining machinery has reached the world’s advanced level. In order to make China’s construction machinery occupy the commanding heights of the world as a whole and control the technical discourse power, we still need to make greater efforts.


Post time: Jun-08-2022