Fire Fighting Rescue Cage Modular Underfloor Design
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Solution Overview
Problem
Existing fire fighting rescue cages are inflexible, making it difficult to exchange one cage construction for another on the same ladder set, and incorporating collision prevention devices is challenging while maintaining flexibility.
Innovation Solution
A modular design for the rescue cage with an underfloor module that can be easily exchanged and integrated with a collision prevention system, including sensors and a rotary water supply line, allowing for pivoting and sliding movements to prevent collisions and maintain operational flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the rescue cage is designed with a fixed construction adapted to the ladder set, then the cage can be securely mounted and operated, but it becomes difficult to exchange one cage construction for another on the same ladder set
Solution Approach 1:
The rescue cage is divided into a framework portion and an underfloor module that can be independently exchanged. The underfloor module contains the suspension connection points and operational equipment, while the framework can be replaced without removing the underfloor module from the ladder set.
Solution Approach 2:
The underfloor module is designed as a universal interface that can accommodate different cage framework designs on the same ladder set. Standardized connection points and suspension attachment mechanisms allow multiple cage configurations to use the same mounting system.
2Adaptability or versatility
If the cage design is made flexible to enable easy exchange, then different cage constructions can be mounted on the same ladder set, but implementing collision prevention devices becomes more challenging
Solution Approach 1:
Collision prevention devices are pre-integrated into the underfloor module design, which remains fixed on the ladder set. Sensors and collision detection systems are installed in the suspension connection area, enabling collision detection regardless of which cage framework is attached.
Solution Approach 2:
The underfloor module acts as an intermediary between the ladder set and various cage frameworks. Collision prevention devices are embedded in this intermediate layer, providing reliable collision detection and communication between the cage and ladder set without requiring integration into each specific cage design.
3Adaptability or versatility
If the suspension connection is made very flexible to allow underfloor position, then the cage can be positioned below the ladder mounting plane, but the construction becomes more complex to maintain flexibility
Solution Approach 1:
The suspension system incorporates dynamic elements that allow the underfloor module to pivot and adjust its position relative to the ladder set. The suspension connection enables the cage to move between horizontal and underfloor positions while maintaining structural integrity and operational capability.
Data Source
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AI summary
The invention relates to a fire fighting rescue cage (10), comprising a suspension (42) for connecting the rescue cage (10) with one end of a ladder mounted on a fire fighting vehicle to be pivotable around a horizontal axis (A), and a water supply line (64) leading from the ladder to water distribution means mounted at the rescue cage (10). The rescue cage (10) comprises a plate-like underfloor module (30) being inserted into the backside of the floor of the rescue cage and being connected to said suspension (42). The water supply line (64) comprises a first section (66) on the ladder side and a second section (74) on the rescue cage (10) side, said second section (74) being conducted at least partially through the underfloor module (30) and comprising a joint to be connected with the water distribution means at its end on the rescue cage side, said first section (66) being connected with said second section (74) by means of a rotary feedthrough (78) enabling a pivoting movement of the second section (74) with regard to the first section (66) around the horizontal pivoting axis (A) of the suspension (42).