Conductor Loop in Steel Cable Conveyor Belt
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Solution Overview
Problem
Conductor loops in conveyor belts suffer from premature fatigue, leading to false alarms and unnecessary downtimes due to their susceptibility to corrosion, low flexibility, and vulnerable connections, resulting in a significantly shorter service life compared to steel cord conveyor belts.
Innovation Solution
The conductor loop is installed using electromagnetic induction heating, forming an adhesive bond with the cover plate material, employing a hybrid conductor loop made of corrosion-resistant materials like polyamide and silver, and pressurizing the conductor loop package within a vulcanizable rubber mixture molded part to enhance vulcanization quality and time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional conductor loops are installed in conveyor belts, then the conveyor belt can detect longitudinal slits, but the conductor loop suffers from premature fatigue, corrosion, and vulnerable connections leading to short service life
Solution Approach 1:
The conductor loop uses a composite structure with a corrosion-resistant metal core (such as stainless steel or copper) surrounded by a protective polymer coating. This composite material approach provides both the electrical conductivity needed for detection and resistance to corrosion and fatigue, directly addressing the reliability issues of conventional conductor loops.
Solution Approach 2:
The patent employs a modular conductor loop design where the entire conductor loop assembly can be quickly replaced as a single unit when it reaches the end of its service life or fails. This disposable approach minimizes downtime and maintenance complexity, accepting shorter individual component life in exchange for system reliability through easy replacement.
2Adaptability or versatility
If the conductor loop is made more flexible to reduce fatigue, then flexibility improves, but the material becomes more susceptible to corrosion and connection vulnerability
Solution Approach 1:
The conductor loop employs a composite structure where a flexible polymer material serves as both the matrix and protective coating, while a corrosion-resistant metal core provides structural integrity and conductivity. The polymer coating thickness and composition are optimized to provide flexibility while maintaining corrosion resistance, resolving the trade-off between these properties.
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 method extends the service life of conductor loops by improving the vulcanization process, reducing false alarms, and enabling quicker replacement without disrupting material transport, thereby minimizing downtime.
Implementation Method 1
embedded tension member in the form of steel cables running parallel in the longitudinal direction of the conveyor belt
Implementation Method 2
The inserted molded part is vulcanized by means of electromagnetic induction with generation of heat
Data Source
Figure 1~3
Figure 4
AI summary
The belt (13) has a support-side cover plate (14) and a running-side cover plate (15) made of vulcanized rubber composition. Embedded tensile carriers (16) i.e. steel cords, run parallel in a longitudinal direction. The support-side cover plate and/or the running-side cover plate is designed with a conductor loop (19) e.g. hybrid conductor loop. The loop is installed by an electromagnetic induction process. The loop is made of a textile material and a metallic material. The induction process is performed so that a temperature ranging from 130 degree Celsius to 180 degree Celsius is obtained. An independent claim is also included for a method for installing conductor loops.