Continuous Stop Rail for Pallet Rack Flue Space Fire Safety
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Solution Overview
Problem
Existing pallet stop systems are either expensive, labor-intensive to install, prone to damage, or fail to maintain the required 6″ unencumbered flue space between pallet rows, leading to fire safety concerns in warehouses.
Innovation Solution
A pallet stop system featuring elongated, integral stop rail devices mounted alongside pallet racks using preformed hanger straps to maintain a minimum horizontal spacing, allowing for continuous stop rails that extend the length of multiple racks, ensuring the desired flue space is maintained without encroaching on the flue area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional pallet stop systems (single bay wraparound or Z-type brackets) are used, then pallet positioning is achieved, but the required 6" flue space is encroached upon or compromised
Solution Approach 1:
The invention transitions from two-dimensional pallet stops (brackets mounted on single rack faces) to a three-dimensional continuous rail system that extends along the length of multiple racks. This dimensional change allows the stop to maintain precise pallet positioning while being positioned outside the flue space envelope, thus resolving the conflict between positioning accuracy and fire safety.
Solution Approach 2:
The continuous rail acts as an intermediary element between the pallets and the rack system. Rather than mounting stops directly on rack faces (which encroach flue space), the rail is mounted on external row spacers or adjacent racks, serving as a mediator that provides positioning function without violating fire safety clearances.
2Manufacturing precision
If Z-type brackets are used for pallet stopping, then pallet positioning is achieved, but the load beams suffer structural damage from impact forces
Solution Approach 1:
The invention segments the stopping function from the load-bearing function. The continuous rail handles the pallet stopping and impact absorption, while the load beams remain dedicated to supporting pallet weights. This segmentation prevents impact forces from being transmitted to the load beams, preserving their structural integrity.
Solution Approach 2:
The continuous rail serves as a duplicate or substitute for the traditional bracket-based stopping mechanism. Instead of relying on brackets attached to load beams, the rail provides the same positioning function through a separate structural element designed specifically to absorb impact forces without compromising beam strength.
3Manufacturing precision
If multiple individual pallet stops are installed on each rack, then pallet positioning is achieved, but installation becomes labor-intensive and cost increases
Solution Approach 1:
The invention merges multiple individual stopping functions into a single continuous rail structure that serves multiple racks simultaneously. Instead of installing separate stops on each rack face, one continuous rail mounted on external spacers or adjacent racks provides positioning for pallets across an entire row of racks, dramatically reducing installation labor and component count.
Solution Approach 2:
The continuous rail system is designed as a universal solution that can be applied across multiple racks with different configurations. The modular design with universal mounting options (row spacers, adjacent rack mounting) allows a single rail type to serve various rack depths and arrangements, reducing inventory complexity and installation variability.
4Object-affected harmful factors
If row spacers are used to maintain flue space, then fire safety clearance is maintained, but pallet overhang varies causing flue space encroachment
Solution Approach 1:
The continuous rail provides a physical feedback mechanism that actively prevents pallet overhang variation. As the forklift operator approaches the rail, the rail's presence and position provide tactile and visual feedback, allowing the operator to consistently position pallets at the correct location. The rail itself acts as a hard stop that prevents any variation beyond the designated position, ensuring consistent flue space maintenance.
Data Source
AI summary
An elongated integral stop rail device extending the length of a row of pallet racks and carried from the racks by hangers which space the rail device at a desired distance from the lateral extent of the racks. The method involves a determination of the length of the row of racks, assembling a stop rail device to extend that length, and mounting the stop rail device from the respective racks the desired distance lateral of the racks. A pair of integral stop rail devices may be spaced laterally apart to block encroachment of pallets supported on adjacent rows of pallets into a flue space defined between the pair.