Spring-Loaded Cableway Bonding Contact for Moving Support Cables
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Solution Overview
Problem
Existing cableway systems face challenges in maintaining effective equipotential bonding of support cables, especially when these cables are embedded in guide parts with plastic inserts, as they are prone to movement due to external influences, leading to wear and potential loss of electrical contact.
Innovation Solution
The solution involves providing an insert recess in the plastics material insert for an electrically conductive contact element, which is movably arranged and pressed against the support cable by a spring element, ensuring continuous electrical contact and equipotential bonding even with slight movements of the support cable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of substance
If the support cable is embedded in a guide part with a plastics material insert, then mechanical load on the support cable is reduced and wear is reduced, but equipotential bonding cannot be achieved because the plastic material is electrically insulating
Solution Approach 1:
The guide part is segmented into two functional zones: a plastics material insert for mechanical support and wear reduction, and an electrically conductive contact element for equipotential bonding. This segmentation allows each component to fulfill its specific function without compromising the other.
Solution Approach 2:
An electrically conductive contact element is introduced as an intermediary between the support cable and the grounded structure. This contact element bridges the electrical gap created by the insulating plastic material, enabling equipotential bonding while the plastic material continues to provide mechanical support.
2Reliability
If a spring-loaded contact element is used to press against the support cable for equipotential bonding, then electrical contact is improved, but wear on the contact element increases due to high contact forces
Solution Approach 1:
The contact element is designed with optimized material properties and geometric parameters. By selecting appropriate materials with suitable hardness and electrical conductivity, and by optimizing the contact surface area and spring force parameters, the system achieves reliable electrical contact while minimizing contact pressure and resulting wear.
3Reliability
If the support cable is firmly tensioned between two points, then equipotential bonding is easier to achieve, but the cable cannot accommodate lateral deflections due to external influences such as wind forces and cable vibrations
Solution Approach 1:
The contact element is designed with dynamic characteristics, including spring loading and movable arrangement within the guide part. This allows the contact element to adapt its position and contact force in response to cable movements caused by wind, vibrations, or other external influences, maintaining continuous electrical contact while accommodating cable deflections.
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
This approach ensures reliable equipotential bonding of support cables in cableway systems, minimizing wear on the contact element and maintaining effective electrical contact during normal operation and slight movements of the support cable.
Implementation Method 1
a spring element is provided that presses the electrically conductive contact element against the support cable
Data Source
AI summary
An arrangement for equipotential bonding of a support cable of a cableway that does not lose its effect even in the event of possible slight movements of the support cable. The arrangement includes an insert recess on the plastics material insert of a guide part for the support cable, through which insert recess an electrically conductive contact element is inserted, and the contact element is movably arranged in the insert recess. A spring element is provided that presses the electrically conductive contact element against the support cable so that the electrically conductive contact element contacts the support cable guided on the plastics material insert with a contact surface. The electrically conductive contact element is electrically connected to an equipotential bonding point of the cableway.