Research and application of efficient auxiliary transportation system for rapid excavation and anchoring equipment

With the continuous improvement of excavation efficiency in coal mine working faces, the issues of long construction cycles, poor safety, and high labor intensity associated with traditional support and transportation methods during coal mine roadway excavation have become increasingly prominent. There is an urgent need to develop new equipment to enhance the operational efficiency and safety of auxiliary transportation systems. To address this, this paper develops a self-moving tail for belt conveyors. The equipment primarily consists of guide rails, advancing cylinders, lifting cylinders, support cylinders, a tail base, a pump station, and an intelligent control system. Through modular structural design and multifunctional integration technology, it incorporates functions such as advancing and deviation correction. Its operation is based on the cyclic principle of “lifting-advancing-lowering-track resetting”, achieving progressive self-propelled movement. Driven by a high-power hydraulic pump station, the equipment delivers a traction force of up to 1 000 kN, significantly increasing advancing speed while reducing manual operation intensity. The traveling guide rails employ a wear-resistant base plate design, effectively extending service life and reducing maintenance frequency. The tail cylinder is equipped with a left-right deviation correction mechanism, improving positioning accuracy and enabling adaptation to slopes of ±20° and variable gradients of ±8°. The control system integrates a multi-mode intelligent operation unit, dual-voltage drive motors, and compatibility with the Modbus industrial communication protocol, meeting the requirements of intelligent mine construction. Validated by finite element simulation analysis and underground industrial tests （using a 50 m prototype on slopes ≤8° with floor hardness f≥4）, the system demonstrates excellent structural reliability and operational stability under continuous heavy-load conditions, achieving an average advancing speed of 0.28-0.42 m/min. This effectively shortens the roadway excavation cycle and significantly reduces deviation failure rates. This achievement represents a technological leap from mechanization to automation in coal mine auxiliary transportation equipment, holding significant engineering value for promoting safe, efficient, green, and low-carbon coal mining practices.