The world's first 220kg explosion-proof six-axis industrial robotic arm for mining was officially released at the 21st China International Coal & Mining Technology Exchange and Equipment Exhibition. Jointly developed by CCTEG Changzhou Research Institute and Inovance Technology, this product has obtained mining explosion-proof and coal safety certifications for its core components. It can replace human labor in high-risk operations such as shotcreting, 3D confined wall printing, and gangue sorting in harsh environments like high humidity, high dust, and gas-prone conditions. This makes large-scale machine substitution for high-risk underground coal mine positions possible, hailed as a "milestone in intelligent underground operations."

Four Major Industry Challenges, Conquered at Once

The current bottleneck in mine intelligence is that heavy-duty operations in high-risk underground areas still heavily rely on manual labor—dangerous, inefficient, and uncontrollable. Harsh environments lead to high equipment maintenance costs, poor execution precision, uncontrollable component lifespan, low system efficiency, high integration complexity, and response delays, creating an almost insurmountable barrier in the last mile of underground equipment intelligence. Although the industry now possesses intelligent "brains" and "neural networks," it still lacks "steel arms" capable of reliably and accurately executing heavy-duty tasks in extreme environments. The release of the 220kg explosion-proof six-axis industrial robotic arm for mining shatters the underground boundaries of safety and efficiency, breaking the deadlock for the industry.

Breakthrough in Strength
220kg represents the top tier in the field of explosion-proof robots for coal mining—a true "heavyweight" capable of bearing significant loads. Its pioneering patented design of "all-electric drive + flameproof and encapsulated" integrates servo drives, encoders, and joint motors into flameproof enclosures. With an explosion-proof rating of ExdbIMb and a repeat positioning accuracy of ±0.05mm, it matches the performance of above-ground industrial automation.

Breakthrough in Dexterity
The six-axis bionic structure offers human-arm-like flexibility, enabling effortless operation in narrow mine tunnels. Aerospace-grade ultra-high power density servo motors reduce joint weight by 50% and volume by 30%, truly achieving "effortless heavy lifting."

Breakthrough in Intelligence
Integrating "perceptive eyes, a cerebellum, and a brain," it achieves a closed-loop process of precise perception and intelligent control. Multi-modal fusion of vision and force sensing, combined with self-developed force control algorithms, enables adaptive operations like intelligent shotcreting and compliant handling, making it a true "embodied intelligent agent" capable of autonomous work.

Breakthrough in Integration
The robotic arm seamlessly interfaces with 5G networks and digital twin platforms, becoming a core cornerstone of the "transparent mine." Simultaneously released platforms—InoRobotLab, InoRobotSim, and the EX mechatronic digital twin simulation platform—form a complete programming-simulation-operation-maintenance closed loop, reducing equipment development cycles by 30% and improving system stability by 20%.

Three Process Scenarios, Streamlined at Once

Intelligent Shotcreting
Vision and force control collaboratively scan tunnels to intelligently plan shotcreting paths. Real-time perception of the spray gun's distance from the rock surface and reaction forces allows automatic posture adjustments. Precise force control reduces rebound rates from 30% to below 15%, saving approximately ¥200,000 in concrete costs annually. Spray thickness error is ≤±15mm, and support strength uniformity improves by 35%.

3D Confined Wall Printing
The six-axis high degree of freedom replicates complex manual bricklaying movements. With constant pressure contact of the print head, wall flatness is ≤10mm, construction efficiency increases by 60%, project duration is halved, and the one-time acceptance pass rate reaches 100%.

AI Visual Gangue Sorting
Gangue recognition rate reaches 98%, significantly improving coal quality and reducing transportation costs. The AI visual collision recognition function enables safe operation in dense equipment clusters without collisions with belt conveyors or supports. Force control protection allows gentle grasping of gangue, preventing equipment damage or coal fragmentation due to excessive force, achieving efficient, precise, and programmable 24/7 unmanned gangue sorting.

The release of the 220kg explosion-proof six-axis industrial robotic arm for mining not only addresses the pain points of heavy-duty, high-risk underground operations but also provides a replicable, scalable engineering model for the development of smart mines. It marks a critical step for CCTEG Changzhou Research Institute in its role as a "boundary-breaking pioneer in intelligent underground operations."