Split Shear Plate Pipe Coupling for Large Diameter Differences
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Solution Overview
Problem
Existing pipe couplings for connecting sewer pipes with different diameters are complex, costly, and limited in their ability to bridge significant diameter differences, particularly when using elastomeric sections.
Innovation Solution
A split shear plate design with obliquely oriented cutouts and clamping screw connections directly attached to the shear plate edges allows for diameter adjustment without the need for a separate clamping collar, enabling larger diameter variations and improved flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional shear plates with axial cutouts are used, then the design is simple, but the ability to bridge large diameter differences is limited
Solution Approach 1:
The shear plate is divided into multiple segments along its circumference, allowing each segment to be independently positioned and adjusted. This segmentation enables the shear plate to adapt to larger diameter differences between pipes while maintaining a relatively simple overall design structure.
Solution Approach 2:
The cutouts are oriented obliquely to the axis of the shear plate rather than purely axially, introducing a dimensional change in the orientation of the cutouts. This oblique orientation allows the shear plate to accommodate larger diameter variations by creating an expanded adjustment range in multiple directions.
2Reliability
If separate clamping collars are used to fasten shear plates, then the connection is secure, but the manufacturing cost increases
Solution Approach 1:
The clamping screw connections are integrated directly into the shear plate structure itself, merging the function of the shear plate with the clamping mechanism. This eliminates the need for separate clamping collars, reducing the number of components and manufacturing costs while maintaining secure connection through the built-in clamping screws.
3Device complexity
If axial cutouts are used in shear plates, then the structure is simple, but the length of pressure surfaces is reduced
Solution Approach 1:
The cutouts are oriented obliquely to the axis of the shear plate rather than purely axially, introducing a dimensional change in the orientation of the cutouts. This oblique orientation allows the shear plate to accommodate larger diameter variations by creating an expanded adjustment range in multiple directions.
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 design simplifies manufacturing, reduces costs, and enhances the ability to connect pipes with larger diameter differences by increasing the length of pressure surfaces and flexibility, allowing for a wider range of applications.
Implementation Method 1
it can be adapted to the diameter of the larger-diameter pipe by means of a clamping screw connection, thereby clamping the elastomeric pipe section
Implementation Method 2
The elastomeric pipe sections are typically fastened to the pipes by means of clamps. To keep the wall thickness of the elastomeric pipe section small and to allow sufficient flexibility to bridge diameter differences
Data Source
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AI summary
The invention relates to a coupling for connecting two pipes with different outer diameters by means of a sleeve (1) surrounded by a shear plate (2), wherein the sleeve (1) can be attached to the pipes by means of the shear plate (2). The section of the shear plate (2) facing the second pipe is provided with cutouts (4) which separate a series of remaining pressure surfaces (11, 21) of the shear plate (2). When the second end of the shear plate (2) is attached to the second pipe, these surfaces press the end of the sleeve (1) together such that the sleeve comes into contact with the second pipe. According to the invention, the axially split shear plate (2) can be reduced in diameter at its end facing the first pipe by means of clamping screw connections (5, 6) attached directly to the shear plate (2), without the need for a clamping clamp (3). The cutouts (4) of the shear plate (2) are each oriented obliquely to the axis of the shear plate (2).(Fig. 1).