作者信息
- 1. 沧州黄骅港矿石港务有限公司 沧州 061113
- 折叠
摘要
带式输送机缓冲托辊架在接卸含大石块矿石货种过程中易出现结构塑性变形甚至断裂.针对此问题,文中应用离散元软件对作业过程进行仿真分析,从而得出矿石冲击托辊架的质量、速度、冲击角度、冲击位置等状态参数,并将得到的参数代入到有限元分析软件,采用显示动力学算法对冲击过程进行分析,得出缓冲托辊架损伤主要与高幅度高频率的冲击应力和应变响应有关.通过分别控制石块的冲击速度、质量、冲击位置、缓冲托辊橡胶硬度等单一变量,得出结论:石块冲击速度越快、质量越大、冲击位置越靠近缓冲托辊架、缓冲性能越差,托辊架受冲击的应力和应变响应值也越大,越容易出现变形或断裂损伤.
Abstract
Considering that the buffer roller frame of belt conveyor is prone to structural plastic deformation or even fracture in the process of loading and unloading ore containing large stones,the discrete element software is used to simulate and analyze the operation process,and the state parameters such as the quality,speed,impact angle and impact position of ore impact roller frame can be obtained.The obtained parameters were substituted into the finite element analysis software,and the display dynamics algorithm was provided to analyze the impact process.It was concluded that the damage of the buffer roller frame was mainly related to the impact stress and strain response with high amplitude and high frequency.By controlling the single variables such as impact speed,mass,impact position and rubber hardness of the buffer roller,it was found that the faster the impact speed,the greater the mass,the closer the impact position to the buffer roller frame and the worse the buffer performance,the greater the stress and strain response of the roller frame under impact,and the more prone to deformation or fracture damage.
关键词
缓冲托辊架/离散元/有限元分析/显示动力学/断裂Key words
buffer idler frame/discrete element/finite element analysis/explicit dynamics/fracture引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据