Pivoting Ripping Tool for Dynamic Soil Compaction
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Solution Overview
Problem
Existing soil compaction and stabilization methods are inefficient in achieving high compaction and stabilization of sand and gravel soils, particularly in water-saturated conditions, as they rely on external materials and limited vertical vibration, which restricts soil material loosening and compaction.
Innovation Solution
A device with a column-shaped compaction tool and a vibration device that includes a pivoting ripping tool, allowing for vertical movement and radially oriented position during lifting to break up the column channel wall, facilitating soil loosening and compaction without external drive units, and optional fluid medium introduction for stabilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional vibro compaction methods are used with external materials, then soil stabilization is achieved, but the method complexity and material requirements increase
Solution Approach 1:
The invention extracts and eliminates the requirement for external stabilization materials from the conventional vibro compaction method. By using only the existing soil material through repeated lifting and lowering actions, the method simplifies the overall process while maintaining effective soil stabilization.
Solution Approach 2:
The compaction tool serves itself by utilizing the existing soil material already present in the treatment area. The lifting action causes soil to adhere to the tool, and subsequent lowering redistributes and compactes this same soil, eliminating the need for external materials and reducing method complexity.
2Device complexity
If limited vertical vibration is applied, then device simplicity is maintained, but soil material loosening and compaction efficiency are restricted
Solution Approach 1:
The invention introduces dynamic lifting and lowering movements to the compaction tool, transforming it from a static vibration-only device to a dynamic system. The repeated lifting causes soil adhesion and loosening, while lowering provides compaction, significantly improving compaction efficiency without adding complex mechanical components.
Solution Approach 2:
The compaction process uses periodic lifting and lowering cycles of the compaction tool. This periodic action alternates between soil loosening (during lifting) and compaction (during lowering), enhancing the overall compaction efficiency while maintaining device simplicity through a single vibration motor.
3Reliability
If external materials are used for stabilization, then soil improvement is achieved, but cost and material handling requirements increase
Solution Approach 1:
Instead of discarding or importing external stabilization materials, the invention recycles the existing soil material already present in the treatment area. The lifting action causes soil to adhere to the compaction tool, and subsequent lowering redistributes and compactes this recovered soil, eliminating material requirements and reducing costs.
4Ease of operation
If the compaction tool remains stationary during vibration, then device operation is simple, but soil loosening and redistribution are limited
Solution Approach 1:
The invention transforms the stationary compaction tool into a dynamic system that performs repeated lifting and lowering movements. This dynamic operation enables soil loosening during lifting and redistribution during lowering, significantly improving soil loosening efficiency while maintaining operational simplicity through automated cycle control.
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 method achieves high soil compaction and stabilization by redistributing existing soil material, increasing bulk density and shear strength, with the ability to handle water-saturated conditions and varying soil types, and can be adapted with different ripping tool lengths and tool heads for specific soil conditions.
Implementation Method 1
a column-shaped compaction tool (2) and a vibration device (3), whereby the compaction tool is to be lowered vertically into a soil area to be compacted, which is to be compacted by vibrations of the compaction tool
Implementation Method 2
the at least one ripping tool is pivoted by the lifting of the compaction tool into a second position, in which it is oriented substantially radially to the compaction tool and radially projects beyond a diameter of the tool head, whereby by means of the at least one ripping tool during the lifting of the compaction tool a column channel wall is broken up and soil material is loosened
Data Source
AI summary
A device for compaction is provided that includes a compaction tool and a vibration device. The compaction tool is adapted to be lowered vertically into a soil area to be compacted. The vibration device being configured to be placed at an upper end on the compaction tool. The compaction tool being moveable only in the vertical direction by the vibration device. The compaction tool at its bottom end has a tool head on which at least one ripping tool is arranged, which is pivotable around a horizontal pivot axis into a first position and into a second position. In the first position, the at least one ripping tool is oriented substantially parallel to the compaction tool and in the second position is oriented substantially radially to the compaction tool and radially projects beyond a diameter of the tool head.