In order to solve the bottleneck problem of hydraulic systems that has long constrained the high-end development of domestic excavators, XCMG Mining Machinery has officially reached a deep industry university research strategic cooperation with top engineering colleges in China to jointly establish a joint research and development laboratory for core components of mining machinery. Both parties integrated the advantages of enterprise engineering landing and the cutting-edge theoretical research and development capabilities of universities, focusing on the two key directions of heavy-duty hydraulic components and intelligent fluid control, and successfully completed the research and mass production of a complete set of independent large tonnage hydraulic systems. Multiple core indicators reached the same level as international first-line brands, opening up a new path for the independent and controllable development of core components of domestic construction machinery.
For a long time, high-end main pumps, main valves, hydraulic motors and other components have relied on overseas supply, which not only increases the manufacturing cost of the whole machine, but also restricts the supply cycle and technological upgrades, which is a key shortcoming that restricts domestic large-scale mining and mining to enter the global high-end market. To this end, XCMG has launched a special project for core hydraulic autonomy, synchronized with the research forces of fluid transmission and intelligent control majors in universities, and established an integrated research and development team. The university team is responsible for fluid simulation, new material proportioning, and basic research on control algorithms. XCMG's R&D and process teams focus on product durability testing, mass production process optimization, and whole machine condition matching, connecting the complete chain from theoretical research and development to mass manufacturing.
During the research and development period, the joint laboratory built multiple sets of hydraulic comprehensive testing platforms, replicating dozens of real construction scenarios such as mining heavy load, municipal light load, high and low temperature, and completed over 12000 hours of continuous fatigue testing. In response to the problems of high energy loss and delayed response in traditional hydraulic systems, the team has innovatively developed an adaptive flow distribution electronic control algorithm, which can adjust the pump valve output flow in real time according to the mining load, reducing throttling energy loss. Actual test data shows that XCMG excavators equipped with autonomous hydraulic systems have reduced comprehensive energy consumption by 10% compared to previous generation products, increased instantaneous excavation torque by 8%, and have more stable power output in high-intensity operating conditions such as hard rock crushing and heavy loading.
In terms of material and structural optimization, the team independently developed high-strength wear-resistant alloy materials, optimized the precision machining process of valve cores, significantly improved the wear and impact resistance of components, and extended the average overhaul cycle of hydraulic systems by 30%. The entire set of hydraulic components has been localized and matched, without the need for imported special processing equipment. After mass production, the procurement cost of complete machine parts has significantly decreased. The project has obtained a total of 36 invention patents and 52 utility model patents, and multiple technologies have been selected for the list of key innovation achievements in the construction machinery industry.
Collaborative innovation between industry, academia, and research is not just about laboratory research and development. Both parties are simultaneously building a joint talent training system. Universities offer specialized courses on hydraulic engineering machinery, with XCMG's open production base and reliability laboratory serving as training venues, providing targeted training for high-end equipment research and development talents; Regularly hold technical exchange summits, share cutting-edge research results in the industry, and continuously explore the next generation of lightweight and electrified hydraulic system technology routes. The two parties have launched a second phase joint research and development project for a specialized static hydraulic transmission system for electric excavators, which is designed to meet the low noise and high energy efficiency requirements of new energy equipment.
A large number of end customers have provided feedback that the XCMG excavator equipped with domestically produced independent hydraulic systems has a smooth operation feel, and there is no pressure relief or power attenuation problem during long-term heavy load operations. The procurement cycle for accessories has been significantly shortened, and there is no need to wait for imported spare parts from overseas. The equipment shutdown losses have been effectively reduced. Several large infrastructure and mining enterprises have purchased large quantities of XCMG excavation equipment equipped with independent hydraulic assemblies after comparing and testing new and old equipment.
Industry experts evaluate that the industry university research model deeply linked by XCMG and universities effectively solves the pain points of 'difficult implementation' and 'slow transformation' of scientific research achievements, forming a closed loop of research and development, testing, manufacturing, and iteration, and providing a replicable model for the entire construction machinery industry to break through the barriers of core components.
The comprehensive localization of hydraulic core technology this time is an important achievement of XCMG's continuous cultivation of independent innovation. Next, XCMG excavator will continue to deepen school enterprise cooperation, lay out research and development of hydrogen power and intelligent hydraulic control systems, continuously improve the independent supporting system of core components of the full spectrum mining equipment, rely on original technological advantages, continuously narrow the gap with international leading brands, and lead domestic mining machinery to move towards the high-end of the global industrial chain.
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