In coal mining, explosion-proof trackless rubber-tired vehicles, along with utility vehicles, loaders, and haulers, are crucial transport equipment responsible for moving personnel and materials. However, the underground working environment is complex and harsh, characterized by confined spaces, poor ventilation, and the potential accumulation of flammable and explosive gases like methane. Simultaneously, vehicle engines generate significant heat during prolonged, high-load operation. Failures in cooling systems, high temperatures from mechanical friction, and inadequate lubrication can all lead to catastrophic incidents such as fires and even gas explosions, posing a serious threat to miners' lives and overall mine safety. The application of passive, non-electric technology in automatic fire suppression systems, such as the one developed by Jiutong Changsheng, represents a significant breakthrough for enhancing fire safety in underground mining vehicles like explosion-proof trackless rubber-tired vehicles.

1. Limitations of Traditional Firefighting: Multiple Challenges

Traditional firefighting methods face considerable limitations in preventing and controlling fires in these specialized vehicles. On one hand, manual inspections struggle to provide real-time, comprehensive coverage, making it difficult to detect potential fire hazards promptly. The complex underground environment and the compact internal structure of vehicles mean that anomalies in hidden compartments can easily go unnoticed until a fire has escalated beyond control. On the other hand, conventional fire suppression devices often rely on electrical power. In the demanding underground setting, power lines are vulnerable to damage, potentially causing these systems to fail when needed. Moreover, traditional approaches typically focus on reactive firefighting after ignition, lacking the rapid response capability crucial for suppressing a fire in its early stages and effectively containing its spread, often resulting in substantial economic losses and casualties.

2. Passive, Non-Electric Technology: Innovative Design Overcoming Obstacles

The automatic fire suppression system from Jiutong Changsheng is innovatively designed to address the specific challenges of the underground environment and the fire risks associated with explosion-proof trackless rubber-tired vehicles. It employs a mechanically activated, temperature-triggered fire extinguishing mechanism, eliminating the need for electrical wiring and freeing the system from dependence on external power sources. This design prevents system failure due to damaged cables or power loss, significantly enhancing its stability and reliability. Furthermore, all system components are constructed from vibration-resistant and corrosion-resistant stainless steel, enabling them to withstand harsh underground conditions such as high temperatures, corrosive elements, and constant vibration. For instance, critical parts like detectors and nozzles are made from or treated with anti-corrosion materials (e.g., stainless steel or electroplating), and pipelines are often protected with metal braided hoses, effectively mitigating environmental degradation and extending the system's service life.

3. Precise Detection and Alarm: Identifying Hazards at the Earliest Stage

The system features precise detection and alarm capabilities, enabling comprehensive, real-time monitoring of key areas on mining vehicles. Equipped with strategically placed real-time temperature detectors in high-risk zones prone to overheating—such as the engine compartment, electrical control box, fuel tank, and tires—the system monitors subtle temperature changes continuously. These detectors can be set with specific trigger thresholds based on the operational temperature profile of each zone. Once the temperature exceeds the predefined safe limit, the detector immediately sends an alarm signal. An integrated audible and visual alarm is then activated, promptly notifying personnel to take emergency action or evacuate, thereby gaining critical time for initiating fire suppression measures.

4. Efficient Fire Suppression Response: Swift and Effective Fire Control

In the event of a fire, the system activates rapidly, deploying fire extinguishing agent with high efficiency to control the blaze. It utilizes advanced spray technology, achieving targeted suppression through precisely positioned nozzles and effective extinguishing agents. The agent is discharged under pressure, forming a fine mist that quickly envelops the fire source, ensuring maximum contact with the flames for optimal extinguishing performance. Compared to traditional methods, this spray technology significantly reduces response time and improves extinguishing efficiency.

5. Customized Design Service: Tailored Solutions for Enhanced Effectiveness

Fire risks vary across different types of underground mining vehicles. The Jiutong Changsheng system adopts a customized design approach to meet diverse fire suppression needs. Technicians conduct thorough assessments of each vehicle's structural characteristics, working environment, and potential fire hazards to develop a professional fire suppression plan. Pipeline and nozzle layouts are strategically designed based on the internal structure of the protected equipment, ensuring scientific and rational placement of detectors, nozzles, and agent storage to guarantee complete agent discharge and rapid delivery. For vehicles with unique configurations, the system may employ multi-angle, fine-water-mist nozzles combined with dedicated agent delivery lines. This design ensures that the extinguishing agent can uniformly and effectively cover the fire source regardless of vehicle tilt or movement.

6. Technology Leading the Future: A New Chapter in Intelligent Fire Safety

The application of Jiutong Changsheng's automatic fire suppression system exemplifies how technology empowers safety in coal mine production. By leveraging innovative passive, non-electric technology, it establishes a robust fire safety defense for underground vehicles like explosion-proof trackless rubber-tired trucks. It effectively addresses the numerous shortcomings of traditional firefighting methods in underground settings, substantially enhancing the safety performance and emergency fire response capabilities of mining vehicles. As technology continues to advance, such systems will evolve towards greater intelligence and efficiency, providing more comprehensive and reliable safeguards for coal mine safety production.