Belt-conveyor based efficient parallel storage system design and travel time model analysis

Xiaofei Kou, Gangyan Xu, Chuanyun Yi

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)


This paper presents a belt-conveyor based parallel storage system (PSS). Compared with the conventional AS/RS, it has advantages including more efficient utilisation of storage space, and faster storage and retrieval of products. The PSS consists of three components: the automated retrieval system (ARS), the automated storage system (ASS) and the compact storage rack (CSR). In the ARS, a vertical screw conveyor is used to facilitate the vertical movement of the unit loads, while a powered belt-conveyor is used for the horizontal dimension. Additionally, a powered conveyor system enables motion along the depth dimension, meaning each lane in the CSR is connected to several storage cells. Horizontal belt-conveyor and powered conveyor in the lane constitute cross-belt which causes the parallel process. On the other side of the rack, a unit load lift, a RGV lift, several rail-guided vehicles and a buffer rack constitute the ASS. Based on the system, we formulate separate travel-time models for ARS and ASS, under the assumption of randomised, uniformly distributed storage rack positions. Computer simulation with Matlab is used to validate the models, and optimise the automated storage system.

Original languageEnglish
Pages (from-to)7142-7159
Number of pages18
JournalInternational Journal of Production Research
Issue number23
Publication statusPublished - 15 Feb 2018
Externally publishedYes


  • conveyor system
  • operating characteristic
  • parallel storage system
  • simulation
  • travel time models

ASJC Scopus subject areas

  • Strategy and Management
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering


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