Boring Device Guide and Clamping Mechanism for Pile Drilling
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Solution Overview
Problem
Existing drilling devices for foundation piles in water bodies face challenges with directional accuracy and positioning, as well as dynamic load transfer, which affect the precision and stability of the drilling process.
Innovation Solution
The implementation of a guide device with a pivotable sliding element and a clamping device with a parallelogram arrangement ensures precise alignment and secure engagement with the foundation pile, improving directional stability and load transfer through hydraulic cylinders and friction linings, allowing for self-locking and easy operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a drilling device is lowered into a foundation pile for drilling operations, then the drilling function is enabled, but the directional accuracy and positioning precision deteriorate due to lack of proper guidance and bracing
Solution Approach 1:
The positioning system is segmented into two independent functional components: a guide device with sliding elements for directional guidance and a clamping device with clamping elements for radial bracing. This segmentation allows each component to perform its specific function optimally without interfering with the other, thereby improving directional accuracy while maintaining manageable system complexity.
Solution Approach 2:
The guide device acts as an intermediary between the drilling device and the foundation pile wall, providing directional guidance through sliding elements that contact the pile wall. This intermediary component enables precise positioning without requiring the entire drilling device to be complex, as only the guide device needs to provide guidance functionality.
2Force
If clamping elements are used to brace the drilling device against the foundation pile wall, then dynamic load transfer is improved, but the risk of uneven loading and device tilting increases
Solution Approach 1:
The parallelogram arrangement of the clamping device provides geometric feedback that ensures the clamping elements remain parallel to the foundation pile wall during operation. This geometric constraint automatically compensates for loading variations and prevents tilting, maintaining device alignment stability while enabling effective dynamic load transfer through the clamping elements.
Solution Approach 2:
The clamping device uses asymmetric positioning of clamping elements at different locations along the drilling device body. This asymmetric arrangement allows differential adjustment of each clamping element, enabling compensation for uneven loading conditions and preventing device tilting while maintaining stable contact with the pile wall for effective load transfer.
3Ease of operation
If the drilling device is designed to be movable and adjustable for positioning, then ease of operation is improved, but the stability and rigidity during drilling deteriorate
Solution Approach 1:
The drilling device employs dynamic positioning mechanisms (guide device with sliding elements and clamping device with clamping elements) that can be adjusted during operation to accommodate different foundation pile positions and conditions. Once positioned, these same mechanisms provide rigid bracing against the pile wall, transforming the device from a movable state to a stable drilling state, thus achieving both ease of operation and drilling stability.
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
This solution enhances the precision and stability of the drilling process by ensuring accurate positioning and effective load transfer, improving the overall efficiency and reliability of the drilling device.
Implementation Method 1
a sliding lining 39 is provided on the outward-facing surface of the sliding element 38
Implementation Method 2
a friction lining 31 is provided on the outward-facing surface of the clamping element 30
Data Source
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AI summary
The invention relates to a boring device for producing a bore for a foundation pile for constructing a structure in a body of water, comprising a boring tool which is arranged on a movable arm, a tensioning device which is designed to clamp the boring device in the foundation pile, which is arranged at the upper end, and which has a clamping element that functions as a counter bearing. The tensioning device has an arm on which the clamping element is arranged, and the arm of the tensioning device can be pivoted from a first position to a second position, in which the clamping element is engaged with the wall of the foundation pile, by means of a drive. A guide device is provided which is designed to guide the boring device in the foundation pile and a first end of which is arranged on the lower body and a second end has a sliding element. The guide device has an arm on which the sliding element is arranged, and the arm of the guide device can be pivoted from a first position to a second position, in which the sliding element is engaged with the wall of the foundation pile, by means of a drive.