Dual-Axis Solar Tracker Bearing Assembly for Load Distribution
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Solution Overview
Problem
Conventional dual axis solar panel structures face challenges in minimizing power consumption for tracking sunlight due to high energy requirements from sensors and motors, and existing designs often lead to stress on pivotal points, causing wear and tear.
Innovation Solution
A dual axis solar panel structure featuring a base frame assembly with axial and radial load distribution using thrust bearings and split-type bush bearings, a middle frame assembly with antifriction bearings, and a top frame assembly with trusses and C-frames, supported by a drive arrangement for oscillatory motion, reducing the power needed for tracking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If two pivotal connections are used to connect horizontal frame to top frame, then the structure is stable, but stress is concentrated on pivotal points causing wear and tear
Solution Approach 1:
The connection system is segmented into multiple support points rather than relying on two concentrated pivotal connections. The horizontal frame is supported at multiple locations along its length, distributing the connection function across several points rather than two critical pivots.
Solution Approach 2:
Different parts of the connection system have different functions - some points provide vertical support while others allow rotational movement. The support structure transitions from uniform pivotal connections to a system where specific locations have specific characteristics (fixed supports vs. roller supports).
2Measurement precision
If solar trackers use sensors and electric motors for tracking, then tracking precision is improved, but power consumption increases
Solution Approach 1:
The solar tracker system uses the weight of the panels and structural components themselves as the driving force for tracking, rather than requiring external electric motors. The system automatically adjusts its position by allowing the structure to pivot and rotate under gravitational influence, with the mass distribution providing the necessary torque for movement.
Solution Approach 2:
The patent replaces the conventional electromechanical tracking system (sensors + motors) with a passive mechanical tracking system that uses gravitational forces and carefully designed pivot points to achieve automatic sun-following motion without active power consumption.
3Productivity
If dual axis tracking is implemented, then solar power capture is maximized, but structural complexity and weight increase
Solution Approach 1:
The patent combines the two tracking axes into a unified structural system where the horizontal and rotational movements are integrated through shared support structures and connection points, rather than implementing them as separate independent mechanisms.
Solution Approach 2:
The support structures serve multiple functions simultaneously - providing structural stability, enabling rotational movement, supporting panel weight, and facilitating tracking motion. Each component is designed to perform multiple roles within the dual-axis tracking system.
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 design minimizes power consumption for tracking sunlight by efficiently distributing loads and reducing stress on components, ensuring smooth operation and extended lifespan of the solar panel system.
Implementation Method 1
support the axial load of the structure carrying the plurality of Photovoltaic (PV) panels
Implementation Method 2
one or more radial bearings fitted to the base vertical tube for distribution of the radial load of the structure carrying the plurality of Photovoltaic (PV) panels
Implementation Method 3
plurality of bearing blocks with bearing made of antifriction material such as gunmetal are mounted on the middle frame
Data Source
AI summary
The present invention discloses a dual axis solar panel structure for photovoltaic (PV) panel which facilitates tracking of sunlight with minimum effort and power. The present invention comprises a base frame assembly (1), middle frame assembly (2) and a top frame assembly (3). The bearing arrangement is such that on mounting of the a middle frame assembly (2) on the base frame assembly (1), the entire axial load of the of the structure carrying the Photovoltaic (PV) panels is transmitted to the axial bearing/thrust bearing (8) and the radial load to the bush bearings (5). This arrangement facilitates operation of the daily movement/azimuth angle slewing drive (4) with a motor of less capacity resulting in savings in the power required for the daily movement/azimuth angle slewing drive (4).