Heated Power Rail Bracket Assembly for Moisture Leakage Control
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Solution Overview
Problem
Existing systems for providing electrical power to freely steerable heavy work machines face challenges in maintaining electrical connections with elevated power rails, which are prone to current leakage due to moisture accumulation, leading to voltage drops and safety risks.
Innovation Solution
A bracket assembly with insulative bases and conductive clips, incorporating a resistor that generates heat to evaporate moisture and maintain dielectric resistance, while providing a secure and safe electrical connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If elevated power rails are used to avoid ground disturbances and safety risks, then safety and stability are improved, but current leakage through insulative support structures increases due to moisture accumulation
Solution Approach 1:
The patent applies the 'Blessing in disguise' principle by converting the harmful effect of moisture accumulation into a beneficial heating effect. The insulative support structure, which normally suffers from moisture-induced current leakage, is equipped with heating elements that utilize the presence of moisture and the electrical energy to generate heat. This heat evaporates the moisture, thereby eliminating the current leakage problem. The harmful moisture is thus transformed into a medium that, when heated, protects the system by preventing dielectric breakdown and current leakage through continuous evaporation.
2Reliability
If insulative support structures are used to hold elevated power rails, then electrical isolation is improved, but dielectric resistance decreases when moisture accumulates on the support structures
Solution Approach 1:
The patent applies the 'Preliminary action' principle by proactively preventing moisture accumulation before it can degrade the dielectric resistance. Heating elements are integrated into the insulative support structures, and these elements are activated to maintain the support structures at temperatures that prevent moisture from accumulating to harmful levels. By taking preliminary heating action, the system ensures that the insulative properties are maintained continuously, preventing the condition where moisture would otherwise accumulate and reduce dielectric resistance.
3Power
If current flows through insulative support structures to reach power rails, then power delivery is achieved, but voltage drops occur due to current leakage
Solution Approach 1:
The patent applies the 'Blessing in disguise' principle by converting the energy that would be lost to current leakage into a useful heating function. The system intentionally allows small currents to flow through the insulative support structures, and these currents are harnessed to power heating elements integrated into the support structures. The heat generated by these heating elements evaporates moisture, preventing the kind of current leakage that causes voltage drops. Thus, the potential energy loss is transformed into a protective heating action that maintains efficient power delivery.
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 solution effectively reduces current leakage and maintains stable voltage delivery by evaporating moisture, ensuring reliable power supply and safety in harsh environments.
Implementation Method 1
a resistor electrically connected to the first conductive clip and the second conductive clip. The resistor is positioned proximate to the top surface of the insulative base and configured to emit heat to the top surface when current from the power rails passes through the resistor.
Implementation Method 2
The resistor is positioned proximate to the top surface of the insulative base and configured to emit heat to the top surface when current from the power rails passes through the resistor... evaporate moisture and maintain dielectric resistance
Data Source
AI summary
A power rail retention system includes a heated bracket assembly for supporting conducting power rails. Power rails carrying different voltages supplied by a substation rest on a support plate that includes grooves configured to accept lower sections of angled clips. Upper sections of the clips frictionally hold the power rails against the support plate. A resistor is coupled between the lower sections of at least two conductive clips and is positioned proximate a top edge of the support plate between adjacent rails. When the rails are energized, current flows through the resistor, which may generate ambient heat to evaporate moisture on the support plate, power a light source on the bracket, and provide a ballast load for the substation.