Non-contact rechargeable conveyor belt inspection robot for mining: analysis of mining application in Mengda
The main belt conveyor in coal mines has long lines, long running time, and scattered fault points. Manual inspection has long been faced with problems such as high intensity, low efficiency, and prominent safety hazards. Focusing on this pain point, the application of Mengda Mining Mining non-contact rechargeable conveyor belt inspection robot, integrating multi-wheel train tracks, magnetic coupling wireless charging, edge computing AI and multi-parameter environmental monitoring into the same system, providing a more complete engineering model for unmanned inspection of the main transport belt.
1. Why does the main transport belt need a non-contact charging inspection robot?
The main belt conveyor is a key equipment for coal mine production and transportation. Once deviation, tearing, foreign matter jamming, roller overheating, smoke or harmful gas abnormalities occur, it can easily cause shutdown or even safety accidents. It is difficult for traditional manual inspections to achieve high-frequency, continuous, and standardized records, and it is also difficult to complete abnormality identification and linkage processing in the first time.
- Inspection route length: The distance of the main transport belt is long, and the manual round trip is time-consuming;
- High environmental risk: There are coal dust, moisture, gas, noise and low illumination problems underground;
- Many exception types: Deviation, foreign matter, temperature rise, smoke, gas, etc. require multi-sensor judgment;
- It is inconvenient to replenish energy: Contact charging contacts are prone to dust, oxidation, and wear, and require high maintenance pressure.
2. What modules does the system consist of?
According to relevant application cases in "Smart Mine", the non-contact rechargeable inspection robot system consists of the robot body, multi-wheel train track, magnetic coupling charging, edge computing AI and other modules. It is not a single camera inspection, but a closed-loop system that combines visual recognition, environment perception, mobile platform and automatic energy replenishment.
| module | effect |
| Robot body | Equipped with camera, thermal imaging, environmental sensing, control and communication units |
| Multiple wheel train tracks | Stable operation along the conveyor belt route, suitable for long-distance inspections |
| Magnetic coupling wireless charging | Realize non-contact energy replenishment, reducing contact wear and manual plugging and unplugging |
| Edge computing AI | Locally identify deviations, foreign objects, smoke and other anomalies to improve response speed |
| Multi-parameter monitoring | Real-time monitoring of methane, CO, smoke and other safety parameters |
3. Engineering value of non-contact wireless charging
In the explosion-proof scenario of coal mines, the charging method should not only consider "whether it can be charged", but also consider the risk of sparks, the impact of dust, the frequency of maintenance and the ability of the robot to operate autonomously. Non-contact wireless charging uses magnetic coupling to transmit energy. After the robot reaches the charging position, it can automatically replenish energy without mechanical plugging and unplugging. It is more suitable for underground fixed track inspection systems.
- Reduce contact failures: No exposed electrodes to avoid poor contact caused by coal dust and moisture.
- Improve security: Non-contact compensation can reduce the risk of sparks and mechanical wear during plugging and unplugging.
- Support unattended: The robot can automatically inspect, automatically return to the station, and automatically charge according to tasks.
- Suitable for long-distance inspections: In the case, the robot has a endurance of more than 20 km, which can cover the long-distance inspection needs of the main transport belt.
4. AI recognition and multi-parameter monitoring make inspections more specific
This type of conveyor belt inspection robot does not simply take photos and send them back, but puts AI recognition and multi-parameter monitoring on the robot side. It is mentioned in the case that the system has an adaptive lifting capability of 0~1800 mm and can adapt to different inspection heights; deviation detection reaches 7 cm level; the foreign object recognition rate is greater than 91%; and it can also perform real-time monitoring of parameters such as methane, CO, and smoke.
| ability | Application value |
| 0~1800 mm adaptive lifting | Adapt to inspection points at different heights of belt conveyors |
| 7 cm level deviation detection | Detect conveyor belt drift trends earlier |
| Foreign object recognition rate>91% | Reduce the risk of foreign object jamming and belt damage |
| Methane/CO/Smoke Monitoring | Integrate equipment inspections with environmental safety monitoring |
| Edge AI Analysis | It can still judge locally and operate independently when communication fluctuates. |
5. What does the on-site application effect indicate?
A 10-month industrial test at the Mengda Mining Site showed that the number of inspections was reduced from 5 to 6 people per shift to 1 to 2, the inspection efficiency increased by more than 50%, and abnormal downtime was also significantly reduced. This shows that the non-contact rechargeable conveyor belt inspection robot is not a single point equipment upgrade, but integrates "inspection, identification, communication, energy replenishment, and alarm" into a system that can operate continuously.
What is particularly noteworthy is that when the case mentions that the ring network or 5G is interrupted, the robot can still operate independently. This is very important for long-distance belt tunnels underground: when the communication status is unstable, the robot can still complete local data collection, anomaly identification and task execution, and then complete data return or alarm synchronization after communication is restored.
6. Design suggestions for non-contact charging system
- Charging point layout: Prioritize placement at the end of the track, safety chamber or dispatch waiting area;
- Explosion proof and protection: The transmitter, receiver and power module should confirm the explosion-proof, dust-proof and waterproof requirements according to the underground environment;
- Alignment tolerance: Track parking accuracy, charging distance and lateral offset range need to match;
- Communication linkage: The charging status should be connected to the robot control system and mine dispatching platform;
- failsafe: Over-temperature, over-voltage, over-current, foreign object detection and charging abnormality alarms must be retained.
Conclusion
The non-contact rechargeable conveyor belt inspection robot for mining advances the main conveyor belt inspection from manual high-intensity inspection to the stage of continuous robot sensing and automatic energy replenishment. Wireless charging solves the problem of "whether the robot can stay on site for a long time to work", while edge AI and multi-parameter monitoring solve the problem of "whether the robot can detect problems in time". The combination of the two is the real direction for the intelligent operation and maintenance of the coal mine's main transportation system.
Reference materials: Li Xiaolin, Yong Shengmin, Liu Hui, et al. "Application of Mining Non-contact Charging Conveyor Belt Inspection Robot in Mengda Mining", "Intelligent Mining", Volume 6, Issue 12, 2025, pages 59-63.