Topological Optimization For Conveyor Link Plate Of Strickle Reclaimer With Stress Constraints Under Multiple Loading Cases

With the development of our national economy and the promotion of utility foundation scale, the round-stock boom stacker and reclaimer as a new device will dominate the bulk handling field in future, and has extensive application prospect, because of its high environmental protection and automation characteristic. The strickle reclaimer as an accessory of the round-stock boom stacker and reclaimer, has become an important conveyor for granular material. So through the topological optimization for conveyor link plate which is a key part of strickle reclaimer, we can not only get proper link plate structure, and also can improve holistic quality of strickle reclaimer.Loads on conveyor link plate were analyzed at first. Velocities and quantity reserved of strickle were acquired via analyzing operation principle and working process of strickle reclaimer which is an accessory of the round-stock boom stacker and reclaimer YDQ500/1200Φ100. Then formulas of material drag forces and cutting force on strickle were got via analyzing loading condition of strickle—link device. After that, the strickle reclaimer’s conveyor system was built in SolidWorks, and the model was leaded in ADAMS software. After dynamics analyzing of the strickle reclaimer’s conveyor system in cases of-5.8°and0°for pitching angle. Then, FEM analyses were done to the strickle, and loads on bolt holes were got. Finally loads on conveyor link plate were divided into8cases considering the symmetry of structure.The ICM method was used to construct the conveyor link plate topology optimizing model. Before optimizing, the initial structure of conveyor link plate was built in ANSYS, and it was divided into optimizing zone and not optimizing zone. Loads on conveyor link plate were operated with multiple-level and load magnification strategy to decline ill loading influence on optimization result. After operation, a large load case and eight magnified little load cases were got. The element live and death method was used to program the optimizing procedure combing with ICM theory via APDL in ANSYS. There are two steps in the topology optimizing process of conveyor link plate. The first step is for the optimization of conveyor link plate under large load. After the first step, three optimization results with different reduced factors were got. And when the reduced factor equals0.95, the optimization structure is very clear. So we can take the result with the reduced factor of0.95as the first step optimization result. Before second step optimization, elements died in first step should be resurged. And the initial model should be divided into optimizing zone and not optimizing zone again. After the solution, clear second optimization structure was got. Compare the optimized conveyor link plate structure and dynamic performance of strickle reclaimer’s conveyor system with those of optimization before. The comparison indicates that stress on optimized link plate is more even than before as well as the weight is more light. And the meshing impact performance is better than before.Finally, dynamic stress experiment was done to test stress on conveyor link plate when the strickle reclaimer was working. The result verified the FEM model of conveyor link plate was appropriate. And also the static stress tests for conveyor link plate optimized after and before were done. After the comparison of stress got from tests on link plate between optimized after and before, conclusion was got, which shows that the stress on optimized conveyor link plate is more even. So the optimized structure is more appropriate.