电动移动式货架作业效率仿真分析

电动移动式货架具有节省空间的优点,可用于存货品种少、存储容量大的工业仓库中。为探讨仓库作业效率与存储能力之间的冲突是否限制移动式货架的使用问题,文章以某医药行业电动移动式货架为例进行了仿真分析。基于Witness的仿真模型对5类不同场景的分析表明:库内存在较为严重的拥堵和排队,其严重程度与拣选策略和货位分配有关;低SKU及低频作业品项可能决定整个仓储系统的作业效率。

Efficiency Simulation for Electronic Mobile Rack

Mobile racks are broadly used in warehouses, especially in those with low items and large stock-keeping unit （SKU）. However, contraction between storage capacity and rack efficiency may restrict the usage of mobile racks. Such an example in medicine industry is offered in this paper. Using Witness simulation software, a model is developed for medicine warehouse with mobile rack sys- tem. Simulations are executed to analyze rack efficiency in five different scenarios. All scenarios embody more or less low efficiency and long line in front of buffers. Results indicate that efficiency relies on policies of order-picking and space allocation. It can also be concluded that the minority items of small quantities and low frequency may decide the performance of the whole system.