Automated Cargo Restraint via Worm Gear Actuation
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Solution Overview
Problem
Existing auxiliary restraint assemblies for cargo in aircraft cargo compartments are inefficient and require manual operation, lacking automation and often require additional components, which can complicate integration and maintenance.
Innovation Solution
A fully automated cargo restraining system utilizing a worm gear and motor mechanism, integrated with a controller, that extends and retracts a restraint head to secure cargo, reducing component count and enabling seamless operation within existing space constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation is used for auxiliary restraint assemblies, then device complexity is reduced, but productivity and ease of operation deteriorate due to manual effort requirements
Solution Approach 1:
The system uses sensors to automatically detect cargo weight and positioning, triggering the restraint mechanism without manual intervention. The motorized worm gear assembly activates automatically when cargo is detected, eliminating the need for manual operation while maintaining operational simplicity.
Solution Approach 2:
The patent replaces manual mechanical operation with an automated motorized system. A motor drives the worm gear assembly through a gear train, substituting human physical effort with an electric actuation system that automatically secures cargo based on sensor input.
2Adaptability or versatility
If additional components are added to existing auxiliary restraint assemblies, then functionality is improved, but device complexity and ease of manufacture worsen due to integration complications
Solution Approach 1:
The patent combines the motor, worm gear assembly, gear train, and sensor system into an integrated unit that attaches to the existing ball panel structure. This merging of components into a modular assembly improves functionality while managing complexity through unified design rather than separate integrated parts.
Solution Approach 2:
The auxiliary restraint system is designed to work with various cargo types and configurations on the ball panel. The motorized worm gear mechanism provides universal applicability for different cargo weights and positions, enhancing adaptability without requiring multiple specialized components for different scenarios.
3Ease of operation
If automated motorized mechanism is implemented, then ease of operation and productivity improve, but device complexity and manufacturing cost increase
Solution Approach 1:
The system automatically detects cargo presence and weight through sensors, then self-activates the motorized restraint mechanism without operator intervention. This self-service capability maximizes ease of operation while the automated control logic simplifies the user interface to minimal or no manual input required.
Solution Approach 2:
The patent introduces sensors as intermediary devices that detect cargo characteristics and translate them into automated control signals for the motor. This intermediary layer between cargo detection and restraint activation simplifies operation by removing the need for manual assessment and manual actuation, while the sensor-motor interface manages the complexity of the automated system.
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 system provides efficient, automated lateral locking of cargo near the cargo loading door, reducing manual effort and simplifying integration with other smart cargo compartment features, while maintaining compatibility with existing designs.
Implementation Method 1
a worm gear assembly coupled to the motor and the gear assembly, the worm gear assembly configured to engage the gear assembly to extend and retract the restraint head
Implementation Method 2
a restraint head having a gear assembly and secured to the base by a shaft coupled to the gear assembly
Data Source
Figure 1
Figure 2A
Figure 2B~2C
AI summary
A cargo handling system is disclosed herein. The cargo handling system includes a ball panel (202) for moving and storing cargo and a cargo restraining device (206) disposed within the ball panel. The cargo restraining device includes a base (208), a restraint head (210) having a gear assembly (214) and secured to the base by a shaft (230) coupled to the gear assembly, a motor coupled to the base, and a worm gear assembly coupled to the motor and the gear assembly, the worm gear assembly configured to engage the gear assembly to extend and retract the restraint head.