Wind Brace Tensioning Bracket With Double Shear Load Transfer
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Solution Overview
Problem
Existing tensioning brackets and systems require on-site adaptation and connection, which is labor-intensive and prone to errors under high loads, and they lack efficient force distribution and safety during installation.
Innovation Solution
A tensioning bracket with a double shear connection mechanism, comprising a first and second body section connected via a common section, allowing for direct force transfer through projecting pins and holes, and a tensioning nut with a flange for secure attachment, ensuring even force distribution and easy installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If on-site adaptation and connection of straps and brackets is performed manually by workers, then the tensioning system can be installed and adjusted to fit specific site conditions, but the installation process becomes labor-intensive and prone to human error under high loads
Solution Approach 1:
The bracket is divided into multiple body sections (first body section, second body section, common section) that can be independently positioned and connected. This segmentation allows the bracket to adapt to different strap configurations while maintaining ease of assembly through standardized connection interfaces with projecting pins and holes.
Solution Approach 2:
The bracket design enables self-aligning connection through the arrangement of projecting pins and corresponding holes. When the bracket elements are positioned, the pins automatically align with and insert into the holes without requiring precise manual alignment, reducing labor intensity and installation errors.
2Strength
If the bracket is designed to withstand extraordinary loads from wind, snow, and initial tensioning, then the structural strength and reliability are improved, but the complexity of ensuring proper connection and force distribution increases
Solution Approach 1:
Multiple body sections are merged into a single integrated bracket structure with a common section. This merging ensures that forces are distributed across the entire bracket structure rather than concentrated at single connection points, improving strength while maintaining manageable complexity through unified design.
Solution Approach 2:
The common section acts as an intermediary between the first and second body sections, providing a standardized interface for force transfer. This intermediary structure simplifies the connection complexity by creating a predictable, repeatable connection pattern that can be easily analyzed and manufactured.
3Force
If a true double shear connection is achieved with straight-line force transfer through pins and holes, then the force distribution becomes even and efficient, but the manufacturing precision requirements for pin-hole alignment increase
Solution Approach 1:
The projecting pins are pre-positioned on the first body section and the holes are pre-drilled in the second body section according to the required alignment pattern. This preliminary preparation ensures that when the bracket is assembled, the pins and holes are already positioned to achieve the optimal straight-line force transfer, reducing the actual assembly precision requirements.
Solution Approach 2:
The bracket design uses asymmetric positioning of the projecting pins relative to the body sections, with pins projecting from one section to receive holes in another. This asymmetric arrangement creates a natural alignment mechanism that guides the connection elements into proper position, reducing manufacturing precision requirements while maintaining efficient force distribution.
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
Facilitates safe, efficient, and cost-effective installation with improved load distribution, minimizing the risk of connection faults and ensuring secure attachment under high loads.
Implementation Method 1
the pull in the tensioning bracket is transferred from the pulling means to the tensioning bracket and then via the pins and holes to the perforated band substantially in a straight line. Thereby, a true double shear connection is achieved.
Implementation Method 2
the common section when bent more than 5 deg. perpendicular to the longitudinal body axis from an initial first position is plastically deformed to substantially stay in a second different position by at least 3 deg. from the initial position.
Data Source
Figure 1A~1C
Figure 2A~2B
Figure 3A~3D
AI summary
The present invention relates to a tensioning bracket (1) for tensioning at least one perforated band (6) defining a longitudinal band axis (15), the bracket comprising at least one bracket element (2) having a thickness and comprising a first body section (3) defining a first longitudinal body axis, a first body width, and the first body section comprising a number of projecting pins (11) arranged to receive the perforations (7) of the band, the projecting pins identifying a pin side and an opposing non-pin side of the bracket element, and a second body section (4) defining a second longitudinal body axis, a second body width comprising a number of holes (12) arranged in the same pattern as the projecting pins of the first body section, and the bracket element further comprising an attachment section (8) for attaching means for pulling and thereby tensioning the perforated band, wherein the first and second body sections are connected to each other via a common section (5) made of the same piece of material as the first and second body section and wherein the bracket element is configured so that when bending the element along a bending line in the common section the pins of the first section are received in holes of the second body section.