Movable Platform for Ergonomic ULD Unloading
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Solution Overview
Problem
The unloading of shipments from aviation unit load devices can be uncomfortable and time-consuming, especially when dealing with small-dimensional items, as operators must reach deep into the containers, leading to inefficiencies and increased costs.
Innovation Solution
An unload access system featuring a movable platform and elevator that allows operators to access the cargo space at a higher, offset level, enabling ergonomic unloading and reducing the need for extensive reaching, with the platform and elevator being motorized for efficient movement and positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If operators manually unload shipments from ULDs by reaching deep inside, then no additional equipment is needed, but unloading time increases and ergonomic conditions deteriorate
Solution Approach 1:
The platform is designed to be movable between a retracted position (when not in use) and an extended position (when accessing cargo), allowing the system to adapt its configuration based on operational needs. This dynamic adjustment enables the platform to provide ergonomic access when required while maintaining a compact profile otherwise, resolving the contradiction between productivity improvement and device complexity.
Solution Approach 2:
The movable platform acts as an intermediary device between the operator and the cargo inside the ULD. Instead of the operator reaching deep inside the container, the platform extends into the cargo space to provide a working surface at the desired height and position, thereby improving ergonomics and unloading efficiency without requiring the operator to perform strenuous reaching movements.
2Ease of operation
If operators reach deep into ULDs to access small-dimensional items, then no additional equipment is required, but ergonomic conditions worsen and unloading time increases
Solution Approach 1:
The platform's movable design allows it to be extended into the cargo space to provide ergonomic access for operators handling small-dimensional items, then retracted when not needed. This dynamic configuration enables operators to work at comfortable heights and positions without excessive reaching, thereby improving ergonomic conditions while reducing the time spent on manual handling operations.
Solution Approach 2:
The platform introduces a vertical dimension to the unloading operation by extending upward into the cargo space. Instead of operators reaching horizontally deep into the ULD, the platform provides a working surface at an elevated position, changing the operational dimension from horizontal reaching to vertical access, thereby improving ergonomics and reducing unloading time.
3Loss of time
If a movable platform is added to provide ergonomic access, then unloading time reduces by over 50%, but device complexity increases
Solution Approach 1:
The platform is designed with motorized movement capability, allowing it to be automatically extended and retracted based on operational requirements. This dynamic operation, controlled by a control unit that receives signals from sensors detecting cargo conditions, enables the system to provide ergonomic access only when needed, thereby reducing unloading time by over 50% while minimizing the increase in device complexity through automated control.
Solution Approach 2:
The system incorporates sensors that detect cargo conditions and provide feedback to the control unit, which then determines when the platform should be extended or retracted. This feedback mechanism ensures the platform operates only when necessary to improve ergonomic conditions and reduce unloading time, thereby achieving significant time savings while keeping the system complexity manageable through intelligent control based on real-time cargo detection.
Data Source
AI summary
The invention relates to an unload access system for an unit load device, comprising a framework, the framework delimiting a cargo space arranged on a ground load deck and the framework comprising an unload deck for unloading shipments out of the unit load device, whereby the unload deck is arranged distant above the ground load deck and extends in an offset plane adjacent to the cargo space, the unload deck comprises a movable platform, and the platform extends coplanar with the unload deck and is movable between a retracted position and a maximum extracted position, whereby in the maximum extracted position the platform overlaps at least partly the cargo space by extending into the cargo space and in the retracted position the platform does not overlap the cargo space.