Research On The Optimization Of Operation Process Of Four-Way Shuttle Storage And Retrieval System

The continuous expansion of the scale of China's logistics industry and the vigorous development of e-commerce and express logistics provide a huge market demand for the development of the warehousing industry.The high growth and diversified storage and sorting requirements also put forward higher performance requirements for the warehousing industry.In recent years,the new four-way shuttle storage and retrieval system has three dimensions of real-time scheduling and operation and maintenance capabilities.It is a further innovation and development of the existing shuttle-based storage and retrieval system.It has good flexibility and high reliability.It can significantly improve the utilization of storage space and reduce the comprehensive investment cost,and gradually become one of the important solutions for automatic and intelligent storage scheduling of goods storage unit.This paper takes the four-way shuttle storage and retrieval system as the main research object,and conducts research on the optimization of operation process.The main research contents of this paper are as follows:(1)Based on the research status of shuttle-based storage system at home and abroad,the paper summarizes the components of the four-way shuttle storage and retrieval system,describes the layout and characteristics of the storage system,and analyzes the operation mode of the four-way shuttle storage and retrieval system.(2)The paper studies the real-time location allocation strategy of the four-way shuttle storage and retrieval system,and puts forward five strategies and principles,including freight turnover rate principle,shelf stability principle,real-time location principle,equipment scheduling efficiency principle and equipment operation balance principle,and then constructs a multi-objective real-time location allocation model.(3)The paper studies the compound scheduling strategy of the four-way shuttle storage and retrieval system.The paper analyzes the operation flow of the four-way shuttle storage system equipment in each layer of the four-way shuttle mode and the multi-layer shared four-way shuttles mode respectively.Then,the dynamic area control method is proposed to carry out the compound scheduling in the multi-layer shared four-way shuttles mode.In the research,the paper constructs the optimization model of the compound scheduling of outbound and inbound,considering the influence of the equipment acceleration and the direction change in shuttle movement.(4)The paper analyzes the operation process cases of the four-way shuttle storage system.Based on the improved genetic algorithm,the programming and the simulation solution for the models built in the paper are designed.For the batch warehousing and outgoing tasks,the optimization models proposed in this paper can provide efficient and reasonable freight allocation and compound scheduling.And the change of scheduling time after different number of four-way shuttle vehicles provides a strong reference for the operation planning of enterprises.At the same time,the convergence results of the improved algorithm verify the validity of the improved genetic algorithm in this paper.(5)The paper further discusses the location allocation of the full cargo intensive storage system.It puts forward five strategies and principles:channel layout principle,classification and hierarchical storage principle,cargo turnover rate principle,location real-time principle and equipment scheduling efficiency principle.After the optimization objective is determined,an example is analyzed by combining the improved genetic algorithm and A-star algorithm,which verifies the effectiveness of the proposed method and provides a solution for practical application.