Belt Conveyor Trap Catch Process And Control System

Along with the belt conveyor to high speed and long distance, large freight volume and high power direction, belt conveyor safety production ever more important. And break with trap is to prevent the conveyor belt with decline after the break caused by belt conveyor is broken, transportation roadway bet stopper as serious consequences, and cause great economic losses of a conveyor belt protection device.This paper compares and analyses various belt conveyer’s arrest of the equipment can work mode, structure principles, advantages and disadvantages. Based on the break with trap of performance requirements, including the design of hydraulic catch system and electric control system of mechanical and electrical hydraulic control fault belt trap. The catch device structure is simple, reliable, and better solve the single trap catch force small and catch not synchronization problem.According to catch device physical model, and established the spring return cylinder and single function hydraulic cylinder two catch device the mathematical model of the unfit. Use of Matlab/simulink tool in computer simulation of the process was simulated. The specific catch institutions that different transportation send, dip Angle and catching force, the conveyor belt with broken down after the relationship between displacement and time. Design with catch process of the end user interface. Can be convenient to change catch institutions of its own characteristics and operating conditions, the simulation calculations of the curve of the displacement of the conveyor belt decline.Design with the control of the trap end system, with the acquisition of rotary encoder conveyor belt speed signal, the use of speed direction method with judge fault signal, the cut with signals to PLC control catch agency action, realize the conveyor belt with broken protection. Use Labwindow/CVI design the PC monitor interface, realize the whole conveyor belt in the running state of real-time visualization. Setting up the broken with catch signal test bench, verified the feasibility of the method of speed direction.