Simulative Research On The Motion Character And Collision Course Of Tramcar

Mining rail conveying is a important component of the mining production. Efficient conveying system is important to enhance the efficiency of the mining production. In statistic, the mining conveying accident is second to the supporting accident, tramcar accident account for 22.1 percent of the whole conveying accident. Thus, it is necessary to prevent the tramcar accident. The motion character of the tramcar used in mine and the collision course between the tramcar and the car bumper must be analyzed deeply and systemically. In this thesis the mechanical models and the mathematical models are established based on the prototype. The character of motion and the course of collision are simulated dynamically based on the simulative software Simulink the component of MATLAB.In this thesis the two degrees of freedom spring-mass model is regarded as the mechanical model of the tramcar and the Bernoulli-Euler Beam model is used as the mechanical model of the rail. Based on the mechanical models which have been established the vertical vibration character of the tramcar and the rail is simulated dynamically. The conclusions about the vibration are drowned from the simulation above.Three simulative models are developed in this thesis according to three mechanical models, the beam-mass model, the two degrees of freedom spring-mass model and the one degree of freedom spring-mass model. The collision course between the tramcar and the stiff car bumper is simulated dynamically, the law of collision force is drowned, the relationship between the max collision force and the mass or the velocity of the tramcar is obtained.The collision force is simulated dynamically between the tramcar with variety stature and the car bumper (include the stiff car bumper and the elastic car bumper) which is connected with the brake. It is showed from the simulation that the max collision force is reduced because of the utilize of the brake, the tramcar is preserved. The dynamic energy of the tramcar is absorbed by the brake.The velocity of the model of the tramcar is tested based on the software LabVIEW and the conclusions on the velocity are drowned.