Research On Tention Of Conveyor Due To Starting Characteristic Change Of Belt Conveyor

Belt conveyor is one of the continuous equipment for conveying bulk materials, which is widely used for departments such as coal, electricpower, ports and so on. As the demands of market, the belt conveyor with long distance, high-bandwidth, high speed, high power become the main direction of development. The original belt conveyor's problems which is selection and design appeared gradually, Especially in start process of belt conveyor, the dynamic tension by conveyor is directly affect the choice of conveyor.But in actual use, the tension of the Conveyer belt during Start-up process is still according to the traditional static design method to calculate, ignored the dynamic tension by the conveyor during start-up, And this problem has not been solved effectively. This paper makes a detailed analysis about dynamic stress in the course of starting, meanwhile, analyzing the starting process of belt conveyor under different conditions with AMESim software. Providing useful reference for the belt conveyor used on-site. This paper, the research on belt conveyor mainly includes the following aspects:Based on the analysis of viscoelastic characteristic of belt conveyor and the problems presented in application these two aspects, established Kelvin-Vogit model Suitable for the viscoelastic model as the belt conveyor.Doing mathematical analysis for belt conveyor's system, the viscoelasticity vibration differential equation of the belt conveyor system, and also, The mathematical expression of dynamic tension of belt conveyor on different start-up curves and tension device is gained, providing reference for belt conveyor's design and selection.According to the vibration differential equation of belt conveyor, on the basis of rigid body statics, using VB language created "belt conveyor dynamics analysis" software, this system can detect the statics and dynamics analysis in many conditions.The model of the conveyoris established under the control of sine acceleration and the combination of cycloid acceleration with AMESim software, and analysis the dynamic tension of belt conveyor in various starting conditions. Simulation results show that:extending start-up time can reduce the fluctuations in conveyor belt during starting process; The more the starting speed, the more the dynamic tension of the belt conveyor, Start-up curves should have the smallest maximum acceleration, the more the maximum acceleration of the start-up curves,the more Vibration;The more cargoin in the process of starting, the more dynamic tension of the conveyor belt.