Convertible Folding Ladder with Modular Connector Plates
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Solution Overview
Problem
Conventional ladders lack versatility and adaptability for tactical applications, particularly for military, law enforcement, and firefighting scenarios, where different configurations and easy deployment are essential.
Innovation Solution
A convertible folding ladder composed of modular and interchangeable sections with connector plates and quick-release pins, allowing for various configurations such as straight, obtuse angle, and acute angle arrangements, enabling the formation of arched or A-frame structures, and featuring lightweight metal construction for enhanced portability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional ladders are used, then they provide basic climbing function, but they lack versatility and adaptability for tactical applications
Solution Approach 1:
The ladder is divided into multiple modular sections that can be independently connected and configured. Each section contains connector plates with multiple pin holes, allowing different arrangement configurations (straight, arched, A-frame) by selecting different pin hole pairs, thereby achieving versatility without requiring a completely different ladder design for each tactical scenario
Solution Approach 2:
The ladder incorporates quick-release pins that allow rapid reconfiguration between different operational states. The connector plates enable dynamic adjustment of the ladder's geometry (straight configuration, obtuse angle for arched, acute angle for A-frame) by simply changing which pin holes are connected, providing adaptability without permanent structural modifications
2Adaptability or versatility
If modular sections with multiple pin holes are used, then various configurations can be achieved, but the device complexity increases
Solution Approach 1:
The connector plates serve multiple functions: they connect ladder sections, enable different geometric configurations through multiple pin hole pairs, and provide structural support. This multi-functionality reduces the need for separate components for each function, thereby managing complexity while achieving high configurability
Solution Approach 2:
Different pairs of pin holes in the connector plates are designed with different spatial arrangements to produce different geometric configurations. The local variation in pin hole positioning allows global variation in ladder shape without requiring different connector plate designs, simplifying the overall structure while enabling multiple configurations
3Weight of moving object
If lightweight metal construction is used, then portability is enhanced, but structural strength may be compromised
Solution Approach 1:
The ladder employs composite construction combining lightweight metal materials with strategic reinforcement at critical stress points. The connector plates and rungs are designed to optimize the distribution of material, providing sufficient strength for tactical applications while minimizing overall weight through efficient material placement rather than uniform thickening
4Productivity
If quick-release pins are used, then deployment speed increases, but reliability may be reduced
Solution Approach 1:
The quick-release pins incorporate spring-loaded detent mechanisms that automatically engage and lock when the pin is inserted. This self-locking feature ensures reliable connection without requiring manual tightening or additional fastening steps, while the quick-release capability allows rapid disengagement when needed, balancing speed and reliability
Data Source
AI summary
A convertible folding ladder incorporates first and second rigid ladder sections, each comprising opposing spaced apart longitudinal rails, a plurality of spaced apart rungs between the rails, and a connector plate formed with one end of at least one of the longitudinal rails. Each connector plate of the first ladder section defines at least three spaced apart pin holes adapted for being selectively aligned with pin holes defined by the connector plate of the second ladder section. First and second fastener pins are adapted for being removably inserted through the aligned pin holes, such that the ladder is convertible between multiple different configurations.