Multifunctional Ladder Guide Cable for Variable-Height Locking
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Solution Overview
Problem
Existing ladders lack locking mechanisms and extension attachments for safe and ergonomic access to truck bodies, posing safety risks and ergonomic challenges, especially in the logistics sector.
Innovation Solution
A multifunctional ladder with locking and manual/automatic guide cable for height adjustment, featuring a safe work platform and built-in handrails, designed to reach 2 to 10 meters, facilitating access to high areas and accommodating varying heights.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If a ladder is designed to reach higher heights (2-10 meters), then the ability to access high areas is improved, but the stability and safety of the ladder deteriorates without proper locking mechanisms
Solution Approach 1:
The ladder incorporates a guide cable system with manual and/or automatic activation that dynamically adjusts and locks the ladder at various heights (2-10 meters). The cable tensioning mechanism provides continuous stabilization throughout the extension range, ensuring reliability at each height position rather than being fixed at a single length.
Solution Approach 2:
A guide cable acts as an intermediary element between the ladder structure and the anchoring system. This cable mediates the force distribution and provides progressive locking at intermediate heights, allowing the ladder to safely reach higher positions while maintaining stability through the cable's tensioning and guidance function.
2Adaptability or versatility
If a ladder is made extendable to variable heights, then the versatility of use is improved, but the device complexity increases with locking and guide cable mechanisms
Solution Approach 1:
The guide cable system serves multiple functions simultaneously: it guides the ladder extension, provides tensioning for stability, enables manual or automatic locking, and acts as a safety mechanism. This multi-functionality reduces the need for separate complex mechanisms for each function, simplifying the overall device while maintaining versatility.
Solution Approach 2:
The ladder incorporates manual and/or automatic activation options where the system can partially self-regulate its positioning and locking. The automatic guide cable activation reduces the need for complex manual operation mechanisms, allowing the ladder to self-adjust to required heights while maintaining simplicity in the control system.
3Reliability
If a ladder is designed for safe access to truck bodies with locking mechanisms, then the safety is improved, but the ease of operation deteriorates due to complex locking procedures
Solution Approach 1:
The guide cable system with automatic activation capability allows the ladder to self-lock and self-stabilize at the desired height without requiring complex manual locking procedures. The automatic tensioning and locking mechanisms reduce the operational steps needed while maintaining safety, making the system easier to operate.
Solution Approach 2:
The locking mechanism incorporates feedback through the guide cable tensioning system that provides tactile and visual confirmation of proper locking. This feedback mechanism ensures safety is achieved without requiring complex multi-step procedures, as the operator can easily verify the locked position through the cable's tension indication.
4Reliability
If a multifunctional ladder is equipped with guide cable and locking mechanisms, then the reliability is improved, but the weight of the device increases
Solution Approach 1:
The guide cable system is extracted as a separate, lightweight element rather than integrating heavy rigid support structures throughout the ladder. The cable provides the necessary stabilization and locking functions with minimal weight addition, separating the function of height adjustment from the main ladder structure.
Solution Approach 2:
The guide cable acts as a flexible element that provides structural support and locking functionality without the weight of rigid components. This flexible cable system achieves the required reliability and stability while adding minimal weight compared to traditional rigid extension mechanisms.
Data Source
AI summary
The present disclosure is for a ladder, which will be used in various sectors, such as civil and electrical areas, maintenance of gutters, lamps, lifelines, installation of panels, painting, placement of plasterboards, lining, washing of facades, washing of cabins and upper parts of trucks, buses and trailers, and also in the logistics sector, providing configurations that can be used to improve ergonomic conditions and work to be performed in grain unloading hoppers, in the activity of tarpaulin and untarpaulin of the truck body, as well as facilitating access to the body with fastening through chains or ratchet straps engaged in the body structure, consisting basically of a multifunctional ladder (E) on wheels (2), with locking and manual and/or automatic guide cable, for adjustment of the necessary height, designed to reach from 2 to 10 meters in height.