Movable Catenary Insulating Support Assembly for Thermal Stress Relief
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing insulating support assemblies for catenaries used in electrical vehicle transportation systems face issues with mechanical stresses due to thermal variations of contact wires, reliability problems, and difficulties in assembly and adaptation to different section insulators and configurations.
Innovation Solution
An insulating support assembly comprising a base part connected to a section insulator, a suspension insulator extending along a reference axis, and a suspension device movable relative to the suspension insulator and connected to a supporting pole, allowing for rotational and translational movements to accommodate thermal variations and mechanical tolerances.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an additional pulley system is mounted on a dedicated frame to compensate thermal variations, then the mechanical stress issue is partially mitigated, but the device complexity and assembly costs increase
Solution Approach 1:
The insulating support assembly incorporates movable connection means that allow dynamic adjustment and movement to accommodate thermal expansions and contractions of the contact wire. The suspension device can move relative to the suspension insulator, and the connection between section insulators and supporting poles allows for thermal movement without requiring complex pulley systems.
Solution Approach 2:
The invention changes the physical parameters of the connection system by introducing movable connections with degrees of freedom. The connection means allow translation and rotation to accommodate dimensional changes in the contact wire due to temperature variations, eliminating the need for additional compensating mechanisms.
2Device complexity
If traditional insulating support assemblies are used with fixed connections, then the assembly structure is simple, but mechanical stresses lead to distortions and breakages during operation
Solution Approach 1:
The connection between the suspension device and suspension insulator is made movable rather than fixed. The suspension device can move relative to the suspension insulator along the reference axis, allowing the assembly to dynamically respond to thermal variations and mechanical stresses without breaking.
Solution Approach 2:
The insulating support assembly is divided into separate movable components: base part, suspension insulator, and suspension device. Each component can move independently to accommodate stresses, preventing stress concentration and breakage in any single part.
3Stability of the object's composition
If section insulators are connected to supporting poles with fixed insulating supports, then the connection is stable, but assembly difficulties arise due to mechanical tolerances
Solution Approach 1:
The movable connection means provide adjustment capability during assembly. The suspension device can move relative to the suspension insulator, allowing operators to accommodate mechanical tolerances and achieve proper alignment without requiring extremely precise manufacturing.
4Ease of manufacture
If traditional insulating support assemblies are used, then the design is standardized, but adaptability to different section insulator types and configurations is limited
Solution Approach 1:
The base part and suspension device are designed with universal connection capabilities that can accommodate different types of section insulators and supporting pole configurations. The movable connection means provide adaptability to various geometries and mounting requirements while maintaining a standardized core assembly design.
Data Source
AI summary
An insulating support assembly for a catenary is adapted for powering an electrical vehicle. The assembly includes a base part adapted to connect the insulating support assembly to a section insulator of the catenary, a suspension insulator extending from the base part along a reference axis, and a suspension plate suitable to be hung to a supporting pole of the catenary. The suspension plate is connected to an upper part of and is movable relative to the suspension insulator.