Optimize VSI crusher structure is safe efficient

 

VSI crusher is newly researched equipment, with international advanced level. Technology and modern processing equipment make it a leading role in this industry.
The newly-developed VSI (vertical shaft impact) crusher is designed by reputed German expert of Hongxing and every index of VSI crusher is in world’s leading standard. SBM VSI crusher incorporates three crushing types and changing feeding methods,so can be used as a cone crusher or a shaper. Thus, customers do not need to expand investment, they have a crusher and a shaper at a time.Moreover vsi crusher can be operated 720 hours continuously. Nowadays, SBM VSI crusher has replaced hammer crusher, roller crusher, roller ball mill, etc.,and become the mainstream equipment in sand manking business.
VSI crushers are widely applied in expressway and railway building, hydropower station construction, bridge and tunnel building, concrete batching plant, etc for crushing and gravel shaping. In the fine crushing section, VSI crusher is the substitute of impact crusher, and the crusher is much better in terms of main performance indexes.
Based on illuminating the structure, working principle and force analysis of vertical ball mill, the finite element analysis of vertical mill rocker arms is carried out. First of all, the structure of rocker arms and grinding roll components are simplified, then the three-dimensional entity model and meshing model of vertical mill both are established.
1. Advanced double-pump oil lubrication system of the vsi crusher guarantee shaft bearing lower temperature increase, longer life time, more reliable operation.
2. The main shaft of vsi crusher is equipped with imported precision rolling bearing. It makes main shaft work stable, lengthen maintenance cycle, increase productivity.
3. Using hydraulic lifting mechanism in vsi crusher of upper cover can move away the cover easily, which saves man power during maintenance.
4. The vsi crusher is equipped with Over-vibration device. There will be alarm when vibration surpasses a stipulated figure. It will stop the machine, in order to protect it.

Secondly, the material attribute, contact type, loads and constraints of rocker arms and grinding roller components are defined, and the total deformation, equivalent stress and safety factor of vertical mill rocker arm are gained after numerical calculation. Results show that the up rocker could meet basically application requirements for its uniform stress distribution. But the lower rocker cannot meet the strength requirements for its low safety factor, and it is necessary to optimize the structure for improving the safety coefficient of lower rocker.