The Dynamic Simulation On Sintering Machine Based On Virtual Prototype Technology

With the increasing yield of steel and iron, the sintering machine supplying raw materials for the blast furnace is becoming more important. For a long time, the design method of the sintering machine adopts the static design and has no valid method of dynamic emulation. If the technique of virtual Prototype is introduced in study of the sintering machine, it can realize emulation the running state of each mechanism under various working conditions. Results from the emulation are used to estimate and judge different data of actual movement. What have mentioned above provides technique support for the creative design and optimization of the sintering machine, and plays an important role in expediting the development cycle and reducing the cost.Fristly, by analyzing the mechanics relation between the back sprocket wheel and the upper and lower pallet cars, the non-arching mechanics model of the lower pallet cars is established. The force control methods of imposing the torque-loading on the main shaft of the back sprocket wheel is brought forward to carry out the non-arching and the speed fluctuations of the lower pallet cars. Two kinds of teeth space arranged alternately and the even number of teeth are determined for the sprocket wheel according to the interval changed wheelbases of the rolling wheels in the pallet cars. By combining the meshing principle with the actual working condition between the sprocket wheel and the pallet cars, with inversion method and envelope curve method the practical tooth profile curve with sectionalized is established and expressed by universal equation.Secondly, based on the sintering machine design criteria and the analysis demand, Pro/E is used to establish a sintering machine 3D model. Using special connection Mechanism/Pro between Pro/E and ADAM, Pro/E 3D model has been transferred directly into ADAMS to avoid data loss by the "seamless link" technology. Real movement has been imitated after adding complicated constraints, load and friction.Lastly, by the multi rigid body dynamic simulation for the new type 300m2 sintering machine, the time depended curves of the torque acted on the main shaft of the back sprocket wheel, the thrust forces brought bear from the back sprocket wheel to upper and lower pallet cars and the displacement difference between foreside and rearward wheels of pallet are gained. From the video of the sintering machine movement, the simulation also proves that the mechanics model is correct, and that the force control method and the profile method are effective to eliminate the arching and the speed fluctuations of the lower pallet cars. Meanwhile, basic data used to design new-type 300m2 non-arching sintering machine are obtained on the basis of a set of force control values.