Precast Concrete Pipe Couplings with Flat Surfaces
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Solution Overview
Problem
Traditional methods for forming concrete pipe fittings are labor-intensive, result in material waste, and produce fittings with interior imperfections that can impede flow. Additionally, these fittings are difficult to store and transport due to their shape and size.
Innovation Solution
A molding apparatus and method that forms precast concrete pipe couplings with complex geometries like Y-junctions or bends without cutting or rejoining pipe sections. The mold features moveable walls and primary and secondary cores that facilitate the formation of smooth internal surfaces and flat external surfaces, allowing for efficient assembly and storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional manual processes are used to form pipe fittings by scoring and rejoining pipe sections, then the fittings can be created with complex geometries, but the process becomes labor-intensive and time-consuming
Solution Approach 1:
The invention pre-forms coupling members with the desired complex geometry (Y-junctions, bends, etc.) before the actual pipe assembly process. The coupling members are manufactured as ready-to-use components with integrated flow channels and connection interfaces, eliminating the need for manual scoring, cutting, and rejoining operations during installation. This preliminary preparation of coupling members with complex geometries resolves the contradiction by enabling geometric versatility while maintaining manufacturing efficiency.
Solution Approach 2:
The invention introduces coupling members as intermediary components that facilitate the connection between pipe sections. These coupling members serve as mediators that provide the complex geometry (bends, intersections) without requiring direct manipulation of the pipe sections themselves. The coupling members are designed with integrated flow channels and connection interfaces, allowing pipes to be joined through simple attachment operations rather than complex manual forming processes.
2Adaptability or versatility
If traditional manual processes are used to form pipe fittings, then the fittings can be created, but significant material waste occurs from removing concrete sections
Solution Approach 1:
The coupling members serve as intermediary components that provide the desired fitting configurations without requiring material removal from the pipe sections. Instead of cutting and removing concrete to create bends or intersections, the coupling members are manufactured as separate components with the desired geometry already formed. These coupling members are then attached to the pipe sections, eliminating material waste while achieving the same functional result.
Solution Approach 2:
The invention changes the manufacturing approach from subtractive (removing material) to additive/forming (shaping material). The coupling members are formed using molding processes that shape concrete into the desired geometry without removing material. This parameter change in the manufacturing process eliminates material waste while achieving complex fitting configurations.
3Adaptability or versatility
If traditional manual processes are used to form pipe fittings, then the fittings can be created, but interior imperfections occur that impede flow
Solution Approach 1:
The coupling members serve as intermediary components with precisely formed internal flow channels. These coupling members are manufactured using molding processes that create smooth, imperfection-free internal surfaces. By using pre-formed coupling members rather than manually forming fittings in the field, the invention eliminates interior imperfections such as rough edges, debris, and irregular surfaces that would impede flow.
Solution Approach 2:
The invention replaces manual mechanical processes (scoring, cutting, chiseling) with controlled molding processes. The molding process uses precisely controlled mechanical forces to form the concrete into the desired shape with smooth surfaces. This substitution of manufacturing methods eliminates the interior imperfections that result from manual operations while maintaining the ability to create various fitting types.
4Adaptability or versatility
If traditional pipe fittings with curved surfaces are used, then the desired pipe connections can be achieved, but storage and transportation become difficult
Solution Approach 1:
The invention applies asymmetry to the external geometry of the coupling members while maintaining symmetric or standardized connection interfaces. The coupling members have flat surfaces on the exterior for efficient stacking and storage, while the internal flow channels maintain the necessary curvature for proper fluid flow. The connection interfaces use standardized circular openings that match pipe dimensions, providing universal compatibility. This asymmetric design resolves the contradiction by enabling efficient storage and transportation while preserving connection capability.
Solution Approach 2:
The invention changes the dimensional characteristics of the coupling member exteriors from curved to flat surfaces. This dimensional change in the external geometry allows for efficient stacking in storage yards and optimized transportation arrangements. The internal flow channels maintain their curved geometry for proper fluid flow, while the external flat surfaces provide stable stacking surfaces. This dimensional differentiation resolves the contradiction between connection capability and storage efficiency.
Data Source
AI summary
An apparatus and method for manufacturing precast concrete pipe couplings used in municipal and infrastructure systems includes a mold apparatus particularly configured for the formation of monolithic, unitarily formed concrete pipe couplings that facilitate the joining of intersecting and/or bending sections of straight concrete pipes. The mold apparatus comprises a base, adjustable mold walls, and primary and secondary mold cores that shape the internal flow channels of the couplings and that allow for the creation of complex geometries without the need for scoring, cutting, or rejoining pipe sections, resulting in couplings with smooth internal surfaces that enhance fluid flow and reduce maintenance requirements. A monolithic concrete pipe coupling formed by the foregoing method and apparatus exhibits flat external surfaces, facilitating easy stacking, storage, and installation.