Arm Connection for Structural Member Using Standard Fasteners
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Solution Overview
Problem
The existing methods for connecting arms to structural members, such as electrical transmission poles, are time-consuming and require significant force due to the use of large, odd-sized bolts and limited wrench clearance, making them difficult to install and maintain.
Innovation Solution
The proposed solution involves a structural member with laterally extending thru-vangs that are welded in place, featuring aligned apertures for threaded pins and cross braces for support, allowing for easier assembly and securement using standard-sized bolts and nuts, along with conduits for pin insertion assistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If large odd-sized bolts are used to connect arms to structural members, then the connection strength is improved, but the ease of operation deteriorates due to difficulty in purchasing, installing, and maintaining
Solution Approach 1:
The patent changes the bolt size parameter from large odd-sized bolts (1.5 inches or greater in diameter) to standard-sized fasteners. This parameter change maintains sufficient connection strength while dramatically improving ease of operation, as standard fasteners are readily available, easier to install, and simpler to maintain.
Solution Approach 2:
The patent employs standard-sized fasteners that are inexpensive and readily replaceable, rather than expensive custom-made large bolts. This allows for easier maintenance and replacement if fasteners are lost or damaged, aligning with the principle of using affordable, easily replaceable components.
2Reliability
If numerous large bolts are used to secure arms to structural members, then the reliability of the connection is improved, but the productivity deteriorates due to time-consuming installation
Solution Approach 1:
The patent reduces the number of fasteners required by changing the connection design parameters. Instead of using numerous large bolts, the invention uses a smaller number of standard-sized fasteners with improved positioning features (such as positioning pins and alignment holes) that ensure reliable connection while significantly reducing installation time.
Solution Approach 2:
The patent incorporates preliminary positioning features such as positioning pins and alignment holes that are pre-installed on the structural member. These features guide the arm bracket into correct position before final fastening, eliminating the need for complex alignment procedures and reducing the number of steps required for securement.
3Strength
If heavy torquing wrenches are used to tighten large bolts, then the connection strength is improved, but the ease of operation deteriorates due to limited clearance and difficulty in maneuvering
Solution Approach 1:
The patent changes the fastener size parameter to standard-sized fasteners that can be tightened with conventional wrenches and tools. This eliminates the need for heavy, awkward torquing wrenches while still achieving sufficient connection strength through the improved connection design and proper fastener selection.
Solution Approach 2:
The patent introduces positioning pins and alignment features as intermediary elements that facilitate the connection process. These intermediaries guide the assembly into proper alignment and provide reference points for fastener installation, eliminating the need for complex alignment procedures and heavy torquing equipment.
4Strength
If thick abutting thru-vangs and arm brackets are used, then the structural strength is improved, but the device complexity increases due to difficulty in aligning and securing multiple components
Solution Approach 1:
The patent incorporates positioning pins and alignment holes as preliminary positioning features that are pre-installed on the thick thru-vangs and arm brackets. These features guide the components into correct alignment during assembly, significantly reducing the complexity of securing multiple thick components together while maintaining the structural strength provided by the thick materials.
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 significantly reduces the number of steps required for arm connection installation from over thirty to three, simplifies the process, and allows for easier maintenance by using standard-sized fasteners, enhancing efficiency and reducing the risk of lost or damaged components.
Implementation Method 1
The first thru-vang is secured to the structural member by welding. The second thru-vang extends laterally through the structural member and is welded thereto for securement.
Implementation Method 2
at least one cross brace is joined between the first thru-vang and the second thru-vang for structural support
Data Source
AI summary
A structural member and method with an improved arm connection is provided that allows quick connection of an arm to the structural member. Bolts are inserted through aligned apertures in first and second thru-vangs, as well as an abutting arm bracket. A securement member is inserted through an aperture in the bolts that is transverse to the bolts. Last, an arm is secured to the arm bracket for support of electrical conductors strung thereon.