Views: 0 Author: Site Editor Publish Time: 2026-04-09 Origin: Site
Currently, the global construction machinery industry is accelerating its transformation towards low carbonization, intelligence, and efficiency. Power system innovation has become a key lever to break through core bottlenecks and achieve industrial upgrading. On the morning of March 31st, CCTV News reported the heavyweight news that the world's largest tonnage extended range rotary drilling rig was officially launched in Changsha, Hunan. This giant equipment with a weight of 200 tons and a torque of up to 620kN · m is equipped with Yuchai's independently developed 300kW flywheel range extension system (FRS), which breaks through the pain points of traditional rotary drilling rigs in terms of endurance, energy replenishment, and energy efficiency with core technological breakthroughs. It not only attracts the attention of CCTV, but also marks the entry of China's rotary drilling rig power system into the era of range extension, injecting strong momentum into the green and low-carbon development of construction machinery.
As an authoritative media focus in the field of domestic construction machinery, CCTV News has conducted a special report on the offline release of the world's largest tonnage extended range rotary drilling rig, fully affirming its important significance in technological innovation and industrial leadership. The extended range rotary drilling rig that was taken offline this time is the result of Yuchai's joint efforts with related enterprises to deeply cultivate the integration and innovation of power systems and engineering equipment. The operating weight reaches 200 tons and the torque is as high as 620kN · m, far exceeding similar traditional equipment. It can easily cope with complex scenarios such as ultra deep and large-diameter pile foundation construction. Its core competitiveness lies in the Yuchai 300kW flywheel range extender system (FRS) installed, which provides stable and efficient energy support for the entire machine, achieving a dual breakthrough in power performance and low-carbon benefits, breaking the limitations of traditional rotary drilling rig power systems, and becoming a benchmark for industry transformation.
Although traditional pure electric rotary drilling rigs have the advantages of low noise, fast response, and zero emissions, they are limited by their range and energy replenishment conditions, making it difficult to fully utilize their advantages in long-term, high load construction scenarios. Especially in areas with insufficient power grid coverage such as plateaus and remote areas, the problem of limited energy replenishment is more prominent, seriously affecting construction efficiency. The application of Yuchai flywheel range extender system has completely solved the pain points in this industry. On the basis of retaining all the advantages of pure electric drive, this extended range rotary drilling rig realizes the free switching of three modes: pure electric, extended range, and plug-in. It can be flexibly adjusted according to the construction scenario: switching to pure electric mode in urban construction achieves zero emissions, low noise, and meets environmental protection requirements; Switching to extended range mode for high-altitude operations or areas with insufficient power grid coverage, completely eliminating range anxiety and energy replenishment dependence; Daily operations can adopt plug-in mode, balancing energy conservation and convenience, fully adapting to diverse working conditions such as urban infrastructure, high-altitude engineering, and remote construction.
Based on the operating characteristics of high load, long cycle, and complex working conditions of construction machinery, Yuchai Flywheel Extended Range System (FRS) has achieved comprehensive upgrades in structural design, energy efficiency performance, intelligent adaptation, reliability, and durability, creating an exclusive power solution suitable for rotary drilling rigs. In terms of structural design, the system adopts a minimalist design where the flywheel motor is directly connected to the engine crankshaft, eliminating redundant transmission links. The overall length is shortened by more than 10% compared to traditional independent motor solutions, making it more suitable for the compact body layout of rotary drilling rigs, while reducing equipment failure rates and maintenance costs. In terms of energy efficiency performance, equipped with deep Miller+high-efficiency combustion coupling technology, the highest efficiency of the motor system is ≥ 94%, and the power generation efficiency far exceeds the industry average level, achieving a dual improvement of efficient power generation and energy conservation and consumption reduction. In terms of intelligent adaptation, it supports multi-mode switching such as single point power generation, multi-point adjustment, and power tracking, which can accurately match the load changes of different working conditions such as drilling, lifting, and rotation of rotary drilling rigs, ensuring stable and efficient power output. In terms of reliability and durability, the system has undergone rigorous verification throughout the entire process, covering machine level extreme working condition testing. The B10 lifespan of the system can reach over 25000 hours, which can meet the long-term and high-intensity construction needs of rotary drilling rigs and provide stable operation support for the equipment.
This extended range rotary drilling rig not only achieves technological breakthroughs, but also brings significant economic and environmental benefits to construction enterprises in practical applications. In terms of energy conservation and consumption reduction, the whole machine achieves an energy recovery rate of over 70% through advanced technologies such as potential energy recovery, which can efficiently convert the potential energy generated during the construction process into electrical energy for recycling. Combined with the intelligent energy management strategy of Yuchai flywheel extended range system, the long idle working condition of traditional rotary drilling rigs is completely eliminated, significantly reducing fuel consumption - under the industry's conventional construction intensity of 2400 hours/year, rotary drilling rigs equipped with this system can save up to 40% -50% of fuel, saving nearly 400000 yuan in fuel costs annually, significantly reducing project construction costs, and improving enterprise profitability. In terms of environmental protection, the pure electric mode achieves zero emissions and low noise, effectively reducing air pollution and noise pollution during the construction process, in line with the requirements of the "dual carbon" strategy, truly achieving a win-win situation of low-carbon environmental protection and cost reduction and efficiency improvement, providing a new solution for green construction of infrastructure projects.
From "Made in China" to "Created in China", Yuchai has always been based on power system innovation, standing at the forefront of the transformation of engineering machinery power, and continuously promoting breakthroughs in core technologies. This time, Yuchai's flywheel extended range system is equipped with the first rotary drilling rig and has achieved the world's largest tonnage extended range rotary drilling rig offline. It is not only a major breakthrough for Yuchai in the field of power systems, but also reflects the firm direction of China's construction machinery industry towards high efficiency, low carbonization, and intelligent upgrading. The implementation of this achievement has broken the monopoly of foreign high-end power systems in the field of large-scale rotary drilling rigs, enhanced the core competitiveness of China's construction machinery, and polished the innovative business card of Chinese manufacturing with breakthroughs in core technology. In the future, Yuchai will continue to deepen its innovation in power systems, promote the deep integration of extended range technology with more categories of construction machinery, inject strong Yuchai power into the green and low-carbon development of global engineering equipment, and help China's construction machinery industry achieve high-quality development.
