Bus Frame Rigid Rings for Modular Assembly
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Solution Overview
Problem
Current bus frameworks for public transport vehicles are complex, time-consuming to manufacture, and do not allow for large-scale production while providing a satisfactory habitability/mechanical resistance ratio, limiting design flexibility and increasing production costs.
Innovation Solution
A framework composed of interconnected rigid rings that can be easily assembled and modified, allowing for flexible design and improved mechanical strength by reducing the thickness and weight of the frame, while maintaining mechanical integrity through strategic welding and interconnection methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional bus frame architecture is used, then design flexibility is limited, but manufacturing complexity and time are high
Solution Approach 1:
The bus frame is divided into multiple standardized rigid ring segments that can be independently manufactured and then assembled. Each ring is a complete structural unit that can be produced separately using industrial robots, enabling modular construction that simplifies manufacturing while allowing flexible configuration through different ring combinations
Solution Approach 2:
The rigid rings are designed as universal modular components that can serve multiple functions and be configured in various arrangements. The same ring design can be used across different bus models and configurations, providing design flexibility without requiring complex custom manufacturing for each variation
2Strength
If traditional bus frame architecture is used, then structural strength is adequate, but manufacturing time is excessive
Solution Approach 1:
The rigid rings are pre-manufactured as complete structural units with all necessary reinforcements and connections already in place. This preliminary preparation allows the final assembly to be performed rapidly using industrial robots, significantly reducing manufacturing time while maintaining full structural integrity
Solution Approach 2:
Multiple structural functions are merged into the rigid ring design, combining frame support, structural reinforcement, and connection points into a single integrated component. This consolidation maintains mechanical strength while simplifying the assembly process and reducing manufacturing time
3Area of moving object
If frame thickness is reduced to improve habitability, then passenger space increases, but mechanical strength decreases
Solution Approach 1:
The rigid rings incorporate locally reinforced zones at critical stress points and connection areas, allowing the frame to maintain adequate thickness only where structurally necessary. This enables thinner frame sections in non-critical areas, increasing passenger space while preserving mechanical strength where required
4Reliability
If traditional assembly methods are used, then structural integrity is maintained, but production cost is high
Solution Approach 1:
The rigid rings are designed with self-aligning features and integrated connection mechanisms that enable automated robotic assembly without requiring complex manual intervention or specialized tooling. This self-service design reduces labor costs and production complexity while maintaining structural integrity through precise automated positioning and connection
Data Source
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AI summary
The invention relates to a structure (200) for a land vehicle for public passenger transport, particularly a bus-type vehicle, characterised in that it comprises at least two rigid rings (2021-2029) which encircle said structure (200) in the direction of the width thereof, around an interior defined by said structure (200). The invention also relates to a public transport vehicle, particularly a road vehicle, and particularly an electric vehicle, comprising such a structure.