Aircraft Cargo Restraint Pawl Linkage for Automatic Locking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current aircraft cargo restraint systems are manually operated, which is time-consuming and prone to human error, potentially leading to unlocked cargo during flight, affecting aircraft handling and posing safety risks to operators.
Innovation Solution
A cargo restraint system utilizing a mechanical linkage between a lever and pawls, where the pawls are automatically extended or retracted based on the movement of cargo containers or pallets, eliminating the need for manual operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cargo locks are used, then cargo can be secured in place, but the operation is time-consuming and prone to human error
Solution Approach 1:
The cargo restraint system is pre-configured with pawls in the extended position before cargo loading. The system automatically transitions from the extended (locked) position to the retracted (unlocked) position during loading, eliminating the need for manual operation and reducing loading time while maintaining security.
Solution Approach 2:
The system uses the cargo platform itself as the actuating mechanism. As the cargo platform moves onto the rollers, it automatically triggers the pawl retraction through mechanical linkage, allowing the system to service itself without external manual intervention.
2Reliability
If manual cargo locks are used, then cargo can be secured, but operator injury risk increases due to pinching or crushing hazards
Solution Approach 1:
The cargo platform automatically actuates the pawl retraction mechanism through mechanical linkage as it moves onto the rollers. This eliminates the need for operators to manually position or operate the locks, removing them from hazardous zones and preventing pinching or crushing injuries while maintaining cargo security.
Solution Approach 2:
A mechanical linkage system acts as an intermediary between the cargo platform and the pawls. The linkage transfers the motion from the cargo platform to the pawls, allowing automatic operation without direct operator contact with the moving lock components.
3Reliability
If individual locks are operated manually, then cargo can be secured, but the complexity of operation increases
Solution Approach 1:
Multiple individual lock operations are merged into a single automatic operation. Instead of requiring operators to manually control each pawl separately, the system combines all pawl retraction actions into one automatic sequence triggered by the cargo platform movement, significantly simplifying the operation.
Solution Approach 2:
The system automatically manages the complex sequence of pawl retraction and extension operations without human intervention. The mechanical linkage and spring-loaded mechanisms handle the coordination of multiple components, transforming a complex manual task into a simple automatic process.
Data Source
AI summary
A cargo restraint system includes a cargo conveyor system, which has a plurality of rollers and a cargo restraint. The cargo restraint includes an inner pawl rotatably attached to the cargo conveyor system and an outer pawl rotatably attached to the cargo conveyor system. A lever is rotatably attached to the cargo loading system. A mechanical linkage connects the lever to the outer pawl and to the inner pawl, the outer pawl and the inner pawl being controlled by movement of the lever through the mechanical linkage.