Airport Baggage Tray Surface Structure for Sliding Suppression
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Solution Overview
Problem
Conventional baggage conveyance trays in sorting conveyor systems face issues with baggage sliding and falling off due to lack of effective lateral support, leading to reduced conveyor speed and potential damage, as they cannot have four protruding wall plate portions for enclosure.
Innovation Solution
The tray features elongated protrusion portions along the width direction on the baggage placement surface, which provide resistance to sliding and prevent baggage from running into raised wall plate portions, combined with a rough surface for increased friction, allowing for higher conveyor speeds while maintaining safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the baggage placement surface is made flat, then the structure is simple, but the baggage slides back and forth during acceleration and deceleration
Solution Approach 1:
The patent applies local quality by creating elongated protrusion portions at specific locations on the baggage placement surface. These protrusions are positioned along the right-left width direction at appropriate intervals in the length direction, providing localized friction enhancement exactly where needed to prevent sliding during acceleration and deceleration, while keeping the rest of the surface relatively simple.
Solution Approach 2:
The patent segments the baggage placement surface by dividing it into multiple zones using elongated protrusion portions that run along the width direction. These protrusions create distinct contact zones that independently contribute to preventing baggage sliding, allowing the surface to handle complex motion forces through distributed localized features rather than a uniform complex structure.
2Productivity
If the conveyor speed is increased to improve conveyance efficiency, then productivity increases, but the baggage may slide widely and run into or jump over the wall plate portions causing damage
Solution Approach 1:
The patent applies preliminary anti-action by providing elongated protrusion portions on the baggage placement surface before the conveyor undergoes acceleration or deceleration. These protrusions create preliminary friction resistance that counteracts the inertial forces generated during speed changes, preventing baggage from sliding into or jumping over the wall plate portions even at higher conveyance speeds.
3Reliability
If the baggage placement surface is concave with raised sides, then lateral sliding is prevented, but the sliding resistance in the conveyance direction is insufficient
Solution Approach 1:
The patent enhances the concave baggage placement surface by adding elongated protrusion portions that run along the width direction. These protrusions create localized high-friction zones that supplement the lateral containment effect of the concave shape, providing additional sliding resistance in the conveyance direction without compromising the lateral baggage containment provided by the raised sides.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The tray effectively suppresses sliding and prevents damage by providing resistance to baggage movement, enabling increased conveyor speeds without risking baggage or tray damage, and allows for stable and smooth transfer to sorting chutes.
Implementation Method 1
The presence of the elongated protrusion portions along the right-left width direction of the tray on the baggage placement surface can provide baggage which is flexible enough to get into a gap between the elongated protrusion portions even if only slightly with a large resistance to sliding of the baggage in the front-rear direction of the tray.
Data Source
AI summary
A baggage conveyance tray suitable for a sorting conveyor system for conveying baggage at airports has raised wall plate portions protruding on the front and rear both end portions of the tray in the length (conveyance) direction thereof extending in the right-left width direction of the tray. A baggage placement surface located between the front and rear both raised wall plate portions is concave along the length direction such that the central portion in the right-left width direction is lowered while the right and left both sides are raised. Elongated protrusion portions extending along the right-left width direction of the tray are disposed on the baggage placement surface at intervals in the length direction of the tray.