Grid Storage System with Deployable Partitions for Fire Containment
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Solution Overview
Problem
Existing storage systems with stacked containers in a grid structure face challenges in managing space efficiently and safely, particularly in enclosed environments, as they require complex hoisting mechanisms and are prone to disruption during events like fires or system malfunctions, leading to costly shutdowns and damage.
Innovation Solution
The storage system incorporates a frame structure with uprights that carry services like power, water, and sensing means, and includes collapsible walkways and deployable partitions to section off areas, allowing for controlled access and containment of fires, reducing the need for widespread sprinkler deployment and minimizing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of stationary object
If freestanding stacks of containers are arranged in rows to reduce storage volume, then storage density is improved, but access to specific containers requires complicated hoisting mechanisms
Solution Approach 1:
The storage system is divided into multiple independent stacks arranged in a grid pattern, with each stack being a separate unit. This segmentation allows the system to achieve high storage density while using simpler, standardized access mechanisms that can service multiple stacks, rather than requiring complex hoisting mechanisms for each individual stack.
Solution Approach 2:
The system transitions from linear row arrangements to a two-dimensional grid structure with stacks positioned at grid intersections. This dimensional change optimizes space utilization while allowing access mechanisms to operate efficiently across multiple stacks from central locations, reducing the complexity of individual access mechanisms.
2Productivity
If the tube height is made as high as the largest stack to enable single operation extraction, then retrieval efficiency is improved, but the maximum stack height is restricted in enclosed spaces
Solution Approach 1:
The load handling function is segmented into multiple components: a mobile load handler that travels along rails, a manipulator arm for container handling, and a multi-level transfer mechanism. This segmentation allows the system to achieve high retrieval efficiency without requiring a single extremely tall tube, as the mobile handler can service containers at any height by moving to appropriate positions.
Solution Approach 2:
The system employs a mobile load handler that can dynamically reposition itself along the stacks rather than using a fixed tall tube. The manipulator arm can extend and retract, and the handler can move vertically along the stack faces, providing dynamic access to containers at any height without requiring the entire system to be as tall as the maximum stack.
3Volume of stationary object
If stacks are arranged in a grid structure with uprights carrying services, then space utilization is improved, but the system is prone to disruption during fires or malfunctions
Solution Approach 1:
The grid structure is designed with modular stacks positioned at grid intersections, creating naturally segmented zones. Combined with deployable partition means that can be rapidly deployed between stacks, this segmentation isolates potential fire or malfunction events to specific zones, preventing system-wide disruption while maintaining the space-efficient grid arrangement.
Solution Approach 2:
Deployable partition means are pre-installed in a retracted state within the grid structure, ready for rapid deployment. Sensors and detection systems are pre-positioned to identify fires or malfunctions early. When triggered, these pre-positioned partitions can be quickly deployed to contain issues before they spread, enhancing reliability without compromising the compact grid design.
4Productivity
If a single-product stack configuration is used, then handling efficiency is improved, but flexibility in storing different products is reduced
Solution Approach 1:
The storage system is divided into multiple independent stacks, each of which can be configured for specific product types. This segmentation allows some stacks to be dedicated to single product lines for high handling efficiency, while other stacks can be assigned to different products, providing overall system flexibility. The modular nature allows easy reconfiguration of product assignments between stacks.
Solution Approach 2:
The load handling mechanisms and grid infrastructure are designed as universal systems that can service any stack regardless of product type. The mobile load handlers, manipulators, and control systems are multi-functional and can adapt to handle different container types and product configurations, allowing the system to maintain high efficiency across diverse product lines without requiring product-specific infrastructure.
Data Source
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Figure 3a
AI summary
A storage system is described where goods are stored in containers (10) and the containers (10) are stored in stacks (12). Above the stacks (12) runs a grid network of tracks on which load handling devices (30) run. The load handling (30) devices take containers (10) from the stacks (12) and deposit then at alternative locations in the stacks or deposit then at stations where goods may be picked out. The framework (14) may be provided with one or more of the following services: power, power control, heating, lighting, cooling, sensing means, and data logging means. The system describes a method of partitioning the storage system to prevent the spread of fire or prevent damage caused by sprinkler activation.