Transmission Pole Line for Tapered Shell Welding and Waste Reduction
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Solution Overview
Problem
Current pole manufacturing processes are inefficient in producing tapered hollow steel tubes for transmission poles, as they lack a systematic approach to minimize waste and optimize lead times, leading to suboptimal production and increased costs.
Innovation Solution
A pole manufacturing line comprising a shell forming apparatus for cutting and shaping steel blanks into tapered shells, followed by a shell assembly apparatus for seam welding and component integration, utilizing a controller system to optimize the manufacturing process, reduce waste, and improve lead times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional pole manufacturing processes are used, then production flexibility is maintained, but manufacturing efficiency is low and lead times are increased
Solution Approach 1:
The manufacturing line is divided into distinct modular sections: shell forming apparatus for creating tapered shells from blanks, seam welding apparatus for joining shells, and component welding apparatus for attaching flanges and supports. This segmentation allows each station to operate independently and simultaneously, dramatically improving throughput and reducing lead times while maintaining flexibility.
Solution Approach 2:
The shell forming apparatus pre-forms tapered shells from blanks before assembly, and the seam welding apparatus pre-assembles shell sections with flanges and supports before final pole assembly. This preliminary preparation of components enables faster final assembly and reduces overall manufacturing lead time.
2Loss of substance
If material blanks are cut into multiple shell blanks, then material utilization improves, but manufacturing complexity increases
Solution Approach 1:
The shell forming apparatus is designed to handle multiple shell blank configurations from a single material blank, creating different pole sections (full poles, partial pole portions) with varying orientations and dimensions. This multi-functional capability maximizes material utilization across different product types without requiring separate dedicated equipment for each configuration.
Solution Approach 2:
The manufacturing line incorporates adjustable and reconfigurable equipment that can dynamically adapt to different shell blank orientations and pole configurations. This dynamic flexibility allows the system to optimize material usage for each specific production run while managing the complexity through programmable control rather than fixed mechanical configurations.
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 enables efficient production of tapered hollow steel tubes with minimized waste and optimized lead times, enhancing the manufacturing efficiency and reducing production costs while ensuring precise assembly of transmission poles.
Implementation Method 1
The seam welding apparatus welds seams of one or more shaped shells to form a seamed shell
Implementation Method 2
The component welding apparatus welds one or more components to the seamed shell to form a pole
Data Source
AI summary
A pole manufacturing line with a shell forming apparatus in which material blanks (e.g., steel plates, sheets, or the like, other metals, composites, or other material) are cut into one or more shell blanks (e.g., different sizes for different types of poles), and the shell blanks are shaped into shaped shells (e.g., a single shell, half shells, tri-shell, quad shells, or the like). The pole manufacturing line has a shell assembly apparatus in which shells are supplied to a welding apparatus to create longitudinal seam welds in the shaped shells to form the poles, the poles are transported to one or more cells for straightening the pole, trimming the pole length, preparing the pole for components (e.g., base, flanges, supports, or other hardware) and welding the components to the pole.