Optimization Of Cone Crusherkey Parts

Every year a great deal of raw ores are consumed in industries such as mining engineering and highway infrastructure.Due to large size, those ores cannot be directly used. Therefore to meet different needs, crushing is a necessary working procedure to reduce ore size. Among all crushing equipment, cone crusher has a great reduction ratio, and it is widely used to achieve applications such as medium, fine and extra fine crushing operations.As cone crusher applications are increased by a large margin, relative studies are more and more investigated by both domestic and abroad researchers. Such researches were summarized and referred in this paper. Combined with author's practical experience, working principle and function features of cone crusher were indicated. Also some shortcomings and limitations of key parts were pointed. Corresponding analysis and improvements were presented in order to optimize cone crusher. After applying the optimization on cone crusher, results show that crusher performance has been improved as well as economic benefits.Firstly, structural and motion characteristics of cone crusher were analized. Working principle, crushing chamber and its effect on material movement were displayed.Secondly, abrasive performances of liner were analizedfrom,material to thickness to gap between liners. Optimizations were made according to such 3 factors. Penalty function method was used to improve abrasive performance.Thirdly, analysis and improvements were made on wearing plate, topshell, bottomshell and dust guard. By using annular main shaft step and radial oil groove for piston wearing plate, performance has been improved. The results show that new designs are more practical, meanwhile the service life have increased, which indirectly improves crusher stability. By using cylinder and flange design and adding stiffeners, the structure strength and anti-deformability ability of shells have been enhanced. Also the service life has been extended. Overpressure unit and pressure feedback unit were added to redesigned dust control system, preventing dust from going into crushing chamber due to negative pressure. Pressure control and adjustment can be achieved to assure crusher working life and improve stability.Finally, FEM static analysis for key parts were applied. The model was established by Solidworks and transferred to ABAQUS for FEM analysis. According to the relevant data calculation and analysis the stress distribution, and exert the corresponding loading and boundary conditions for statics analysis.Results show that redesigned partsstresses are within allowable range. Compared with old design ones, stresses on improved parts are significantly reduced, which haseffectivelyimproved the structural strength and ensured better stability as expected.