Warehouse Rack Opening Layout for Variable Pallet Heights
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Solution Overview
Problem
Traditional warehouse racks have uniform openings, leading to inefficiencies in storage density and utilization, as they do not adapt to varying pallet heights and sizes, resulting in wasted space and difficulties in pallet placement and retrieval.
Innovation Solution
A computer-based system optimizes rack configurations using combinatorial optimization techniques, such as bin-packing algorithms, to determine unique combinations of rack opening sizes based on historical inventory data, equipment restrictions, and warehouse considerations, ensuring maximum storage density and efficient pallet placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If uniform rack openings with standardized heights are used, then ease of manufacture and interchangeability are improved, but storage density deteriorates due to unused space between pallets of varying heights
Solution Approach 1:
The patent applies local quality by varying the height of rack openings at different locations rather than using uniform heights throughout. Specifically, rack openings are configured with different heights based on the distribution of pallet heights stored in the warehouse, allowing each local position to be optimized for its specific storage needs. This resolves the contradiction by sacrificing the uniformity required for ease of manufacture in favor of maximizing storage density through location-specific optimization.
Solution Approach 2:
The patent changes the parameter of rack opening height from a standardized fixed value to variable values optimized for different locations. By analyzing historical pallet height data and determining an optimal distribution of opening heights, the system transforms the uniform parameter into a distributed set of parameters that maximize storage capacity while accommodating equipment and worker constraints.
2Quantity of substance
If rack openings are customized to optimize storage density, then storage density is improved, but device complexity increases due to non-uniform configurations
Solution Approach 1:
The patent segments the rack structure into multiple standardized modules, each with predetermined opening heights. Rather than creating entirely custom non-uniform racks, the system divides the rack into repeatable segments that can be configured in different combinations. This segmentation approach maintains manufacturing simplicity while achieving the benefits of non-uniform opening height distribution for optimized storage density.
Solution Approach 2:
The patent employs universal rack components and standardized beams that can serve multiple functions across different rack configurations. The same basic rack elements are used throughout, but arranged in different height patterns to create specialized openings for different storage needs. This universality reduces device complexity by reusing proven components rather than designing entirely custom structures.
3Ease of operation
If standardized rack openings are used, then ease of operation is improved through interchangeability, but productivity deteriorates due to suboptimal pallet placement and retrieval difficulties
Solution Approach 1:
The patent applies preliminary action by pre-configuring rack openings to match the expected distribution of pallet heights before pallets are stored. By analyzing historical data and determining optimal opening heights in advance, the system prepares the rack structure to accommodate incoming pallets efficiently. This preliminary optimization enables faster pallet placement and retrieval operations compared to standardized configurations that require adaptation to varying pallet sizes.
Solution Approach 2:
The patent introduces dynamics by making the rack configuration adaptable to changing storage requirements over time. Rather than fixing opening heights permanently, the system can be reconfigured as pallet height distributions change, allowing the rack to dynamically optimize for current operational needs while maintaining ease of operation through systematic reconfiguration procedures.
4Device complexity
If uniform rack configurations are used, then device complexity is reduced, but loss of time increases due to suboptimal pallet placement and retrieval
Solution Approach 1:
The patent uses copying by creating multiple rack configurations that replicate successful patterns identified through optimization analysis. Rather than designing entirely unique custom racks, the system copies and repeats optimized height patterns across different rack locations. This approach reduces the time required for pallet operations by using proven efficient configurations while avoiding the complexity of entirely custom designs.
Data Source
AI summary
A system for optimizing storage racks in a warehouse that includes a plurality of storage racks that each include one or more horizontal bars that are adjustable along a plurality of elevations on the storage racks, placement of the one or more horizontal bars defining a plurality of rack openings within each storage racks; a historical inventory database that is programmed to store historical inventory data for the warehouse, the historical inventory data identifying pallets stored in the warehouse and times at which the pallets were stored; and a computer system including one or more processors that are programmed to determine a pallet distribution profile for the warehouse, to determine a plurality of rack types and quantity of rack types for the warehouse, and to designate each of the plurality of storage racks as one of the plurality of rack types to generate a rack arrangement for the warehouse.