Ballast Tray Assembly for Wind-Resistant Tower Support

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Solution Overview

Problem

Tower structures supporting equipment like antennas and cameras in high wind conditions require a stable and secure ballast tray assembly that effectively resists overturning and sliding without the need for a ground pier installation.

Innovation Solution

A ballast tray assembly comprising a rectilinear arrangement of steel I-beams with profiled ends for welding, interface beams, and an interface plate with a central aperture for mounting, providing a stable base with compartments and drain holes, and designed to resist overturning and sliding through a specific aperture arrangement and fastening mechanism.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a ground pier installation is used to support the tower, then the tower structure achieves high stability and resistance to overturning, but the installation complexity and time increase significantly

Engineering Contradiction:
ImprovestabilityVSAvoidinstallation complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The support system is segmented into modular components: a ballast tray assembly with multiple compartments for different ballast materials, an interface plate with standardized mounting features, and a tower base. This segmentation allows the system to be assembled from pre-fabricated parts rather than requiring complex in-situ construction of a ground pier, thereby reducing installation complexity while maintaining stability through proper distribution of ballast weights in each compartment.

Inventive Principle:
Principle #1Segmentation

2Reliability

If a traditional ground pier installation is used, then the tower achieves secure anchoring, but the installation time and labor requirements increase

Engineering Contradiction:
Improvesecure anchoringVSAvoidinstallation time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The ballast tray assembly is pre-assembled with all necessary mounting hardware, interface plates, and compartment structures before delivery to the site. The interface plate includes pre-drilled aperture arrangements and welding profiles that are prepared in advance. This preliminary preparation eliminates time-consuming on-site fabrication and assembly operations, allowing for rapid installation while ensuring secure anchoring through pre-engineered connection details.

Inventive Principle:
Principle #10Preliminary action

3Ease of manufacture

If the ballast tray assembly uses a simple rectangular design, then manufacturing and assembly are simplified, but the structural strength and resistance to wind loads are reduced

Engineering Contradiction:
Improvemanufacturing simplicityVSAvoidwind load resistance
Core Design Contradiction:
Ease of manufactureVSStrength

Solution Approach 1:

While the overall ballast tray assembly maintains a rectangular configuration for manufacturing simplicity, local quality enhancements are implemented through: (1) internal compartment walls that create rigid sub-structures within each compartment, (2) reinforced interface beams with welded profiled ends at critical load-bearing locations, (3) strategically positioned drain holes that maintain structural integrity, and (4) an interface plate with aperture arrangements optimized for load distribution. These localized strengthening measures provide enhanced wind load resistance without requiring a completely complex overall design.

Inventive Principle:
Principle #3Local quality

4Adaptability or versatility

If the interface plate uses a standardized aperture arrangement, then adaptability to different tower configurations is improved, but the manufacturing precision requirements increase

Engineering Contradiction:
Improveadaptability to different tower configurationsVSAvoidaperture positioning precision
Core Design Contradiction:
Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The interface plate is designed with a universal aperture arrangement that can accommodate multiple tower configurations and mounting requirements. The standardized pattern of apertures allows for flexible positioning of tower bases, antennas, and other equipment. This universality is achieved through careful selection of aperture locations that work with common tower designs while maintaining consistent manufacturing tolerances. The profiled ends with welding features provide additional alignment references that help manage precision requirements during assembly.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Data Source

PatentUS11814807B1Ballast tray assembly for a tower structure
Publication Date: 2023.11.14 GREAT PLAINS TOWER PROD LLC
  • US11814807B1 patent drawing
  • US11814807B1 patent drawing
  • US11814807B1 patent drawing

AI summary

A ballast tray assembly includes a first side-beam; a second side-beam parallel to the first side-beam; a first cross-beam between the first side-beam and the second side-beam; a second cross-beam between the first side-beam and the second side-beam; a third cross-beam between the first side-beam and the second side-beam; a fourth cross-beam between the first side-beam and the second side-beam; a first interface beam and a second interface beam parallel to the first side-beam and the second side-beam between the second cross-beam and the third cross-beam to provide a support interface; and an interface plate attachable to the support interface.