Automatic Cargo Latch With Manual Override and Position Sensing
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Solution Overview
Problem
Existing cargo handling systems for aircraft require manual operation of latches to restrain unit load devices (ULDs), which is time-consuming and increases operational costs for airlines.
Innovation Solution
A cargo restraint assembly with a manual override and position sensor (MOPS) system, featuring an automated latching mechanism that includes a motor, motor coupling shaft, latch coupling shaft, and torque transmitting pin, allowing for automated engagement and disengagement of ULDs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual operation of latches is used to restrain unit load devices, then operational flexibility is maintained, but time consumption and operational costs increase
Solution Approach 1:
The patent replaces the purely manual mechanical latching operation with an automated motor-driven system. The motor rotates the latch coupling shaft, which through the torque transmitting pin and shaft assembly, automatically engages and disengages the latch mechanism, eliminating the need for manual manipulation while maintaining operational control.
Solution Approach 2:
The automated latching mechanism performs the latching and unlatching operations autonomously based on motor activation. The system self-regulates the engagement and disengagement of the latch through the motor's rotation of the coupling shafts and torque transmitting components, reducing dependency on continuous manual intervention.
2Loss of time
If automated latching mechanism is implemented, then operational time is reduced, but system complexity increases
Solution Approach 1:
The latching mechanism is divided into distinct functional components: the motor as the actuation source, the motor coupling shaft for power transmission, the latch coupling shaft for mechanism actuation, and the torque transmitting pin for force transfer. This segmentation allows each component to perform its specific function efficiently, reducing overall operational time while maintaining manageable complexity through modular design.
Solution Approach 2:
The shaft assembly and torque transmitting pin serve multiple functions within the mechanism. The latch coupling shaft both transmits rotational motion from the motor and directly actuates the latch engagement. The torque transmitting pin simultaneously transfers rotational torque and provides mechanical linkage between components. This multi-functionality reduces the need for additional dedicated components.
Data Source
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AI summary
A cargo restraint assembly for a cargo handling system is provided. The cargo restraint assembly includes a restraint device (114, 214) and an automated latching mechanism coupled to the restraint device (114, 214). The restraint device (114, 214) includes a shaft and a torque transmitting pin positioned within the shaft and configured to rotate the shaft. The automated latching mechanism includes a motor, a motor coupling shaft coupled to the motor, and a latch coupling shaft coupled to the torque transmitting pin and configured to interface with the motor coupling shaft. Responsive to the motor being commanded to activate the restraint device (114, 214), the motor rotates the motor coupling shaft in a first rotational direction. Responsive to the motor coupling shaft rotating, the motor coupling shaft rotates the latch coupling shaft in the first rotational direction. Responsive to the latch coupling shaft rotating, the latch coupling shaft rotates thereby causing the restraint device (114, 214) to engage the ULD.