PVC Rugby Goal Posts with Molded Reinforcements
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Solution Overview
Problem
Existing Rugby goal posts are heavy, expensive, and difficult to transport and assemble, making them unsuitable for temporary or portable use on various sports fields, especially in the United States where permanent Rugby stadiums are scarce.
Innovation Solution
The development of lightweight, collapsible, and low-cost goal posts made from PVC pipes with single-piece reinforcements, which are easy to assemble and disassemble without tools, using molded T and cross-bar reinforcements to maintain structural integrity and meet regulation sizes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional metal goal posts are used, then structural strength and stability are improved, but weight and difficulty of transport increase
Solution Approach 1:
The goal post is divided into separate components: upright posts, crossbar, and reinforcement pieces that can be transported independently and assembled on-site. This segmentation allows each component to be lightweight yet structurally sound when assembled, resolving the contradiction between strength and weight.
Solution Approach 2:
The invention uses composite construction combining PVC pipes with metal reinforcement pieces. The PVC provides lightweight outer structure while metal reinforcements (T-shaped and crossbar pieces) provide structural strength, creating a composite material solution that achieves both low weight and high strength.
2Stability of the object's composition
If traditional metal goal posts are used, then structural stability is improved, but ease of assembly and disassembly deteriorates
Solution Approach 1:
The goal post is segmented into modular components with standardized connection points. The T-shaped reinforcement pieces and crossbar sections are designed to attach to upright posts through simple insertion and securing mechanisms, enabling easy assembly while maintaining structural stability when assembled.
Solution Approach 2:
The reinforcement pieces are pre-shaped and pre-cut to specific dimensions and angles. The T-shaped and crossbar reinforcement pieces are manufactured in advance with predetermined attachment features, so that during assembly they simply need to be positioned and secured, eliminating complex assembly procedures while ensuring stable construction.
3Strength
If single piece goal posts are used, then structural integrity is improved, but ease of transport and storage deteriorates
Solution Approach 1:
The goal post system is segmented into multiple transportable pieces including upright posts, crossbar, and reinforcement components. These segments can be placed in vehicles and assembled on-site, providing both structural integrity when assembled and ease of transport when disassembled.
Solution Approach 2:
The reinforcement pieces are designed to fit within or alongside the upright posts during transport. The T-shaped and crossbar reinforcement pieces can be positioned within the framework of the assembled goal post or stored separately in a compact manner, maximizing space efficiency during transport and storage.
4Reliability
If regulation size goal posts are used, then compliance with Rugby rules is improved, but cost and complexity of manufacture deteriorates
Solution Approach 1:
The goal post components are manufactured with precise dimensional parameters that comply with Rugby Union regulations (3.4m height, 3.0m crossbar height, 5.6m width). The upright posts, crossbar, and reinforcement pieces are cut to specific lengths and angles to ensure regulation compliance while using cost-effective materials and assembly methods.
Solution Approach 2:
The reinforcement pieces serve multiple functions: they provide structural strength, maintain regulation dimensions, and facilitate easy assembly. The T-shaped and crossbar reinforcement pieces are designed to be universal components that can be attached to various configurations of upright posts while maintaining compliance with Rugby Union size requirements, reducing manufacturing complexity.
Data Source
AI summary
Low cost, durable, reusable, lightweight, inexpensive, simple, easy to assemble/disassemble, transportable goal posts. Each goal posts may be composed of single piece T reinforcements and a single piece cross bar reinforcement, as well as readily available construction materials, such as PVC pipe. The bodies of the single piece reinforcements are sized so that the pipes forming the upright posts and crossbar have the same length. Assembly, disassembly, and transportation are simplified. The disassembled components can be carried in vans and SUVs. Internal reinforcements allow flexible, low cost materials such as PVC pipe to be used while maintaining a professional, aesthetic appearance.