Solar Tracker Bearing Assembly for Low-Complexity Torque Tube Mounting
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Solution Overview
Problem
Solar tracking systems face high mechanical system reliability and installation costs due to complex bearing designs, requiring skilled labor and safety concerns in remote locations, which hinders deployment in utility-scale photovoltaic power generation systems.
Innovation Solution
A solar tracking bearing system with adjustable Z-axis mounting slots and integrated U-shaped bearing support elements, utilizing low-friction materials and a simplified design with fewer parts, allowing for easy deployment and reduced installation complexity, featuring a rotatable inner bearing race and optional capture straps for secure torque tube beam positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional bearing designs are used in solar trackers, then mechanical system reliability can be maintained, but installation costs and complexity increase significantly
Solution Approach 1:
The bearing is divided into separate modular components: an outer bearing race that remains stationary on the support post, and an inner bearing race that rotates with the torque tube beam. This segmentation allows each component to be simpler in design while collectively providing reliable solar tracking functionality.
Solution Approach 2:
The patent extracts the complex welding and bolting operations from the bearing assembly process, replacing them with a simplified insertion mechanism where the inner bearing race is simply inserted into the outer bearing race. This eliminates the need for skilled welding operations while maintaining mechanical reliability.
2Strength
If traditional bearing assembly methods are used, then mechanical strength can be ensured, but installation time and skilled labor requirements increase
Solution Approach 1:
The outer bearing race is pre-installed on the support post during manufacturing or pre-installation, so that during field installation only the inner bearing race needs to be inserted. This preliminary action eliminates time-consuming welding operations during the critical field installation phase.
Solution Approach 2:
The patent employs simple, inexpensive fastening mechanisms such as capture straps or basic fasteners instead of requiring permanent welding operations. These simpler components can be quickly installed and replaced if needed, reducing both installation time and the need for specialized skilled labor.
3Reliability
If complex bearing designs are used, then mechanical reliability can be maintained, but safety concerns and deployment difficulty increase in remote locations
Solution Approach 1:
The bearing design allows for self-contained assembly where components can be installed without requiring external welding equipment or highly specialized skills. The modular design enables workers to assemble the bearing by simply inserting the inner race into the outer race, making the system more self-sufficient during deployment in remote locations.
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 reduces installation costs, simplifies assembly, and enhances deployment ease, enabling reliable and efficient solar tracking systems with fewer skilled workers required, thus improving the scalability and safety of utility-scale photovoltaic power generation.
Implementation Method 1
utilizing low-friction materials
Data Source
AI summary
An solar tracker bearing comprising a pair of stationary outer bearing races attached on either side of a bearing support element and a rotatable inner bearing race held by the pair of outer bearing races, the rotatable inner bearing race having an beam slot for seating a torque tube beam therein.