In the field of construction machinery in China, significant breakthroughs have been made in recent years, especially in the research and development of large excavators. The bucket loading capacity of some models far exceeds that of traditional small and medium-sized equipment. The typical bucket capacity of traditional excavators (such as 20-ton models) is about 0.7-0.8 cubic meters, and the total capacity of three units is about 2.1-2.4 cubic meters. In contrast, the following domestic excavators, with their super-large bucket design, not only easily exceed this standard in single excavation volume, but also set a new efficiency record:
With the continuous investment in high-end equipment manufacturing in the "14th Five-Year Plan", China's construction machinery industry has achieved a leap from "following" to "leading". As the core equipment for mining and energy infrastructure, the technological breakthroughs of large excavators are directly related to the efficiency of national resource development and infrastructure capabilities. According to the data of the Ministry of Industry and Information Technology in 2024, the market share of domestic super-large excavators has exceeded 65%, completely rewriting the monopoly of foreign brands.
(1) XCMG XE7000E (700-ton class)
Technical advantages:
Adopting the world's first "dual-pump parallel hydraulic system", the system pressure reaches 42MPa, which is 40% higher than that of traditional models;
Equipped with a 5.2-meter ultra-long bucket arm and an 8-cubic-meter rock bucket (optional 10-cubic-meter coal bucket);
Equipped with XCMG's self-developed XEC intelligent control system to achieve millimeter-level precise control of the bucket trajectory;
Application scenarios:
According to the measured data of the Jungar Coal Mine in Inner Mongolia, the annual mining output of a single unit can reach 30 million tons, replacing 50 traditional 220 excavators and saving more than 20 million yuan in fuel costs annually.
(2) Sany SY2600E (300-ton class)
Revolutionary design:
The world's first fully electric hydraulic system, with energy utilization increased to 85% (traditional models are about 60%);
Modular chassis design, can be assembled on-site within 72 hours;
Equipped with AR remote diagnosis system, fault response time is shortened to 2 hours;
Typical case:
In the Dexing Copper Mine in Jiangxi Province, it operated continuously for 12,000 hours without major repairs, setting a durability record for similar equipment. ;
(3) Zoomlion EX8000E-6 (800-ton class)
World's best:
The weight of the whole machine is equivalent to 12 Boeing 747 passenger planes, and the bucket thrust reaches 3800kN;
The original "three-level buffer excavation algorithm" reduces the impact load of the operation by 30%;
Equipped with a 5G remote control system to achieve unmanned operation in high-risk areas;
Economic benefits:
In the Antaibao Coal Mine in Pingshuo, Shanxi, a single device has increased the efficiency of open-pit mining by 3 times, and the investment recovery period has been shortened to 18 months.
Domestication of core components:
Key components such as hydraulic main pumps and slewing bearings are 100% independently developed, reducing costs by more than 50%;
Green transformation
The new generation of hybrid models (such as Sany SY2600H) has 45% less carbon emissions than the diesel version;
International competitiveness:
In 2024, export orders will increase by 210% year-on-year, and the market share in Indonesia, Congo and other countries will exceed 40%;
According to the "White Paper on China's Construction Machinery Industry (2025)", in the next three years, there will be:
1,000-ton pure electric intelligent excavators;
Full life cycle management system based on digital twins;
Commercial application of hydrogen fuel cell powered construction machinery.
