Conductive Adhesive Coating for Elevator Load-Bearing Wires
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Solution Overview
Problem
Existing elevator load bearing member technologies lack effective methods for maintaining wire integrity and facilitating electrical conduction while ensuring adequate adhesion and tensile strength, which are crucial for health monitoring systems.
Innovation Solution
A polymer-based conductive adhesive coating, comprising intrinsically conductive polymers or polymer composites with conductive elements, is applied to elevator load bearing wires to enhance adhesion, electrical conduction, and corrosion protection, while maintaining mechanical properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional adhesive coatings are applied to load bearing wires, then adhesion between the jacket and wires is achieved, but electrical conduction is not facilitated
Solution Approach 1:
The polymer-based conductive adhesive serves multiple functions simultaneously: it provides adhesion between the jacket and wires, facilitates electrical conduction for health monitoring, and offers corrosion protection. This multi-functional coating eliminates the need for separate adhesive and conductive layers, resolving the contradiction between achieving electrical conduction and ease of manufacture.
Solution Approach 2:
The invention uses a composite material consisting of polymer adhesive combined with conductive elements (such as metal particles, carbon black, or conductive polymers). This composite approach integrates the bonding properties of adhesives with the electrical conductivity of conductive materials, enabling both adhesion and electrical conduction in a single coating layer.
2Reliability
If conductive elements are added to polymer adhesive, then electrical conductivity is improved, but adhesion strength may be compromised
Solution Approach 1:
The invention optimizes the concentration, size, shape, and distribution of conductive elements within the polymer adhesive to achieve the desired electrical conductivity while maintaining adhesion strength. By carefully controlling these parameters, the coating provides sufficient conductivity for health monitoring without compromising the bonding performance between the jacket and wires.
3Reliability
If health monitoring systems are implemented, then wire integrity monitoring is enabled, but system complexity increases
Solution Approach 1:
The conductive adhesive coating integrates the health monitoring functionality directly into the load bearing member structure. The coating itself serves as both the adhesive layer and the conductive path for monitoring, eliminating the need for separate sensing elements or additional components. This merging approach enables wire integrity monitoring while minimizing system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The conductive adhesive coating ensures reliable electrical conduction and adhesion, enabling effective health monitoring and maintaining the structural integrity of the load bearing member, while providing corrosion protection.
Implementation Method 1
a polymer-based conductive adhesive coating on each of the plurality of the wires... facilitates electrical conduction between the wires
Implementation Method 2
The jacket is adhered to the wires by the polymer-based conductive adhesive coating
Data Source
AI summary
An elevator load bearing member includes a plurality of load bearing wires, a polymer-based conductive adhesive coating on each of the plurality of the wires, and a jacket surrounding the wires. The jacket is adhered to the wires by the polymer-based conductive adhesive coating. A method of making a load bearing member for an elevator system is also disclosed.