Adjustable Strap Tensioning for Storage Rack Sway Resistance
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Solution Overview
Problem
Inventory systems face inefficiencies in resource utilization, leading to lower throughput, long response times, and poor system performance due to increased inventory storage demands.
Innovation Solution
A tensioning system is implemented in inventory management systems, using straps that attach to a central column to resist sway and oscillation of ladder uprights during lifting by mobile drive units, thereby stabilizing the inventory holders.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If inventory storage capacity is increased to meet growing inventory demands, then storage volume is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The rack structure is designed to be dynamically adjustable rather than static. The ladder upright can be repositioned between multiple locations along the base, and the tensioning system allows dynamic adjustment of structural parameters. This enables the storage system to adapt to varying inventory volumes and retrieval patterns, optimizing space utilization and resource efficiency simultaneously.
Solution Approach 2:
The system allows changing key structural parameters such as the position of the ladder upright along the base and the tension level of the tensioning system. By adjusting these parameters, the rack can be optimized for different storage scenarios - maximizing volume when inventory is high, or improving accessibility and resource utilization when inventory is lower.
2Reliability
If the rack structure is made more stable to prevent sway during lifting, then reliability is improved, but device complexity increases
Solution Approach 1:
Instead of using complex mechanical bracing systems or multiple support structures to prevent sway, the patent employs a tensioning system that uses tensile forces from straps to stabilize the ladder upright. This substitution of a simple tension-based mechanism for a complex mechanical stabilization system achieves reliability while minimizing structural complexity.
Solution Approach 2:
The tensioning system utilizes flexible straps or tensioning members that wrap around or attach to the ladder upright to provide stabilization. These flexible elements are simpler than rigid mechanical bracing systems and can effectively resist sway forces during lifting operations without adding significant structural complexity.
Data Source
AI summary
A tensioning system may be implementable for a rack. A ladder upright may extend upwardly from a central area of a base of the rack and support shelves. First and second straps may extend upwardly from first and second lateral areas of the base and couple with a plate arranged along the ladder upright. The plate can include a set of vertically aligned plate-aligning apertures, and the ladder upright can include a set of vertically arranged receiving apertures. Corresponding aperture pairs can each include one from the set of receiving apertures and one from the set of plate-aligning apertures. The plate-aligning apertures may be distributed differently from the receiving apertures such that the plate is vertically moveable along the receiving apertures to change which of the corresponding aperture pairs is aligned for receiving a fastener to retain the plate in a state in which tension is present in the straps.