Airplane Cabin Door Protection Mechanism for Automatic Retraction
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Solution Overview
Problem
The manual deployment and retrieval of safety shoes to prevent airplane cabin door collisions with the bridgehead platform increases staff workload and hinders the implementation of unmanned aviation ground devices.
Innovation Solution
An airplane cabin door protection apparatus with a deployment mechanism, return mechanism, and detection element that automatically extends and retracts a deployment portion to protect the door, using power conversion and sensors to trigger platform descent and store power for reuse.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual deployment and retrieval of safety shoe is used, then the airplane cabin door is protected from collision, but the staff workload increases and automation is hindered
Solution Approach 1:
The protection apparatus is designed to automatically deploy and retract without human intervention. The deployment mechanism responds autonomously to detection signals from the detection element, and the return mechanism automatically returns the protective component to its initial position after use, enabling the system to serve itself and eliminate manual operations.
Solution Approach 2:
The patent replaces the manual mechanical system with an automated control system. The detection element detects door descent and automatically triggers the deployment mechanism, which uses power conversion portions to convert stored energy into mechanical motion for deployment and retraction, substituting human labor with an integrated sensing-actuating system.
2Reliability
If manual deployment and retrieval of safety shoe is used, then the airplane cabin door is protected from collision, but the implementation of unmanned aviation ground device is prevented
Solution Approach 1:
The protection apparatus operates autonomously through self-service mechanisms. The detection element continuously monitors door position, automatically triggers deployment when door descent is detected, and the return mechanism autonomously retracts the protective component after use, enabling fully unmanned operation without human intervention throughout the entire protection cycle.
Solution Approach 2:
The system implements a closed-loop feedback control mechanism where the detection element provides real-time feedback on door position and descent status. This feedback signal automatically activates the deployment mechanism when protection is needed, and the system continuously monitors until the return mechanism completes retraction, enabling autonomous decision-making and operation without human input.
3Ease of operation
If automatic deployment mechanism is used, then staff workload is reduced, but the device complexity increases
Solution Approach 1:
The patent merges multiple functions into a single integrated apparatus. The deployment mechanism, return mechanism, detection element, and power conversion portions are combined into one cohesive system that performs detection, deployment, protection, and retraction functions simultaneously, reducing overall system complexity compared to separate independent systems.
Solution Approach 2:
The protection apparatus is designed with multi-functionality where a single device structure serves multiple purposes: the detection element monitors door position, the power conversion portions store and release energy for both deployment and retraction, and the protective component serves as both the deployment portion and the protective barrier. This universal design reduces the number of separate components needed.
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
Reduces staff labor intensity by automating the deployment and retraction of the protection apparatus, ensuring the airplane cabin door is protected from collisions without manual intervention.
Implementation Method 1
the power conversion portion is configured to release power to extend the deployment portion
Implementation Method 2
the power conversion portion includes a counterweight structure, the counterweight structure being connected to the connection portion, and the counterweight structure being configured to drive the connection portion to move to cause the extension portion to extend
Implementation Method 3
a detection element, the detection element being configured to detect a downward motion signal of the deployment portion after extension to determine whether an airplane cabin door protection action is triggered
Data Source
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AI summary
An airplane cabin door protection apparatus, comprising a deployment mechanism, a return mechanism, and a detection element. The deployment mechanism comprises a deployment portion (10) and a power conversion portion, one end of the deployment portion (10) is configured to be connected to a bridgehead platform (80), and the power conversion portion is connected to the deployment portion (10); the return mechanism comprises a return power source (30) and a return linkage portion (40), one end of the return power source (30) is configured to be connected to the bridgehead platform (80), and the other end of the return power source (30) is connected to the return linkage portion (40); the power conversion portion is capable of releasing power; the detection element is configured to detect a downward motion signal after the deployment portion (10) extends out.