Research Of Self-moving Control System On The Mobile Tail For Belt Conveyor

Mobile tail is a necessary equipment of large belt conveyor, which connected the bridge Stage loader and belt conveyor. It has multiple functions such as self-moving, raise the head of bridge Stage loader, belt adjust deviation and tension and so on, it is an important part of working face transport equipment. Currently, the majority form of mobile tail is dual hydraulic cylinders, its control mode is manual control, it requires the operator has certain skills. Due to the existence of difficult operation and many other inconveniences, the manual control has been difficult to adapt to the rapid development of the mining and transport requirements, the thus control methods of mobile tail need to improve.In the preliminary research work, structure improvement and innovation have been done to the major mobile tail, a new roller rail scroll self-moving mobile tail prototype ware designed to created. This type of mobile tail can greatly reduce the passage resistance; completely overcome the uneven ground and vacuum suction adverse impact on the mobile tail, relevant research results have been applied for national patents.This paper based on the preliminary research work, redesigned the control mode and hydraulic systems of mobile tail, designed the electro-hydraulic control system with the PLC as the core. By adding solenoid valve, photoelectric sensors and programmable controllers, etc, change the original manual control mode to the man-machine interactive workbench electric control mode, achieve the functions of one-button self-moving, emergency stop, parking continues, powered down control and so on, and set aside the interface for future remote control.Use of computer simulation platform AMESim, simulated the control system, simulated the movements of hydraulic cylinder and the hole mobile tail, and analyzed the control signal changes. The simulation results validate reasonableness of the control system from the theory.In this paper, the control system program of mobile tail was written into the PLC. Use the roller rail mobile tail which was produced advance as the experimental platform, conducted the joint commissioning with the program and hardware. The results has reached the design target such as one-button self-moving, emergency stop, parking continues etc.On the experimental platform, relevant operating parameters of mobile tail were measured and analyzed, the test and analysis results show that the mobile tail run well under the control system, all this work laid the foundation for mobile tail automatic and intelligent control, and accumulated valuable experience.