Trenching Unit Insert Design for Stacked Drainage Stability
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Solution Overview
Problem
Existing trench units face stability issues when stacked to larger dimensions, as the connection between trench bodies can lead to slippage under transverse forces, compromising the system's overall stability and drainage capacity.
Innovation Solution
A trench unit design featuring hollow columns with concentrically arranged column openings and plug-in profiles, including symmetrical and cross-shaped plug-in blocks, enhances stability by providing a form-fitting connection that securely locks the trench bodies together, allowing for increased drainage depth without slippage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If trench bodies are stacked to achieve sufficient drainage depth, then drainage capacity is improved, but stability deteriorates due to slippage between stacked units under lateral forces
Solution Approach 1:
The insert is inserted into the hollow columns of the base plates, creating a nested structure where the insert fits within the column openings. This nested configuration provides form-fitting connection that prevents slippage while allowing vertical stacking for increased drainage depth.
Solution Approach 2:
The connection mechanism transitions from simple vertical stacking to a multi-dimensional engagement system. The insert profiles engage with column openings in both vertical and lateral dimensions, creating a three-dimensional interlocking structure that resists slippage while maintaining stackability.
2Ease of operation
If simple stacking of trench bodies is used, then ease of assembly is improved, but stability deteriorates due to lack of anti-slip connection
Solution Approach 1:
The insert acts as an intermediary component between the base plates of stacked trench bodies. This mediator element provides the anti-slip connection by engaging with the hollow columns, preventing lateral movement while maintaining the simplicity of the stacking process.
Solution Approach 2:
The insert profiles are designed to automatically engage with the hollow columns when trench bodies are stacked. The form-fitting connection self-aligns and secures the units together without requiring additional fastening operations, maintaining ease of assembly while providing stable connection.
3Manufacturing precision
If insert profiles are made asymmetrical for directional insertion, then connection precision is improved, but manufacturing complexity increases
Solution Approach 1:
The insert profiles incorporate asymmetric features such as cross-shaped configurations with reinforcing ribs that provide directional guidance during insertion. This asymmetric design ensures precise engagement with the hollow columns while maintaining manufacturing feasibility through standardized moldable geometries.
Data Source
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AI summary
The invention relates to a trenching unit comprising at least two trenching bodies (10a, 10b) which respectively comprise an upper base plate (11), a lower base plate (12) and hollow columns (13a, 13b) which are arranged vertically between the base plates (11, 12) and form column openings (14) in the base plates (11, 12). The lower base plate (11) of one of the trenching bodies (10a) and the upper base plater (12) of the other trenching body (10b) are placed on top of each other such that the column openings (14) of both placed base plates (11, 12) are arranged concentrically. The invention is characterised in that the trenching bodies (10a, 10b) are connected by at least one insert (15) which comprises a bearing surface (16) and two insert profiles (17a, 17b) which are arranged on both sides of the bearing surface (16) and are connected thereto. The bearing surface (16) is mounted between the placed base plates (11, 12) and the insert profiles (17a, 17b) are inserted in two concentrically mounted column openings (14) of the placed base plates (11, 12).