Intermediate Guide Carriage for Drilling Tool Stability

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Solution Overview

Problem

Existing methods for creating vertical wall slats face challenges in maintaining accuracy and preventing buckling or deviation of drilling and mixing tools, especially as their length increases, leading to potential gaps and impaired sealing functions.

Innovation Solution

The introduction of an intermediate guide carriage that provides additional support to the drilling and mixing tools up to a first drilling depth, allowing for a detachable connection that reduces the risk of buckling and deviation, combined with a stiffening yoke and guide sleeve for improved guidance and support.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Length of stationary object

If the length of drilling and mixing tools is increased to create deeper vertical walls, then the drilling depth is improved, but the risk of tools running off or buckling increases, leading to borehole deviation

Engineering Contradiction:
Improvedrilling depthVSAvoidborehole accuracy
Core Design Contradiction:
Length of stationary objectVSManufacturing precision

Solution Approach 1:

A guide carriage is introduced as an intermediary device between the drilling tools and the ground. The guide carriage travels along a guide rail and provides intermediate support to the drilling tools during the drilling process, preventing buckling and running off even when tools are extended to greater lengths for deeper wall creation.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If axial force is applied by a carrier device to accelerate sinking of drilling tools, then the drilling speed is improved, but the risk of borehole deviation is increased

Engineering Contradiction:
Improvedrilling speedVSAvoidborehole accuracy
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

The guide carriage acts as a mediator that enables the application of axial force for accelerated sinking while simultaneously providing guidance through the guide rail. This intermediate support structure allows high-speed drilling without compromising borehole accuracy, as the guide carriage prevents tool deviation even under accelerated loading conditions.

Inventive Principle:
Principle #24Intermediary (Mediator)

3Device complexity

If drilling and mixing tools are used without additional support structures, then the device complexity is reduced, but the risk of tools buckling or running off increases

Engineering Contradiction:
Improvesupport structure complexityVSAvoidtool stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The guide carriage and guide rail system provides minimal yet effective intermediate support to prevent tool buckling and running off. This simple intermediary structure significantly enhances tool reliability during drilling operations without adding substantial complexity to the overall device configuration.

Inventive Principle:
Principle #24Intermediary (Mediator)

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 enables the creation of wall slats with enhanced dimensional accuracy, reduced wear, and faster drilling progress, while minimizing the risk of buckling and deviation, thus improving the sealing function and overall efficiency.

Implementation Method 1

each of which has a cutting device for removing soil material at its bottom end on the floor

Methodology Applied
Scientific EffectMechanical cutting:

Implementation Method 2

a binding agent suspension fed in and mixed with the removed soil material by the mixing elements is mixed into a floor mortar

Methodology Applied
Scientific EffectMechanical mixing:

Data Source

PatentEP2395153B1Device and method for manufacturing wall panels in the floor
Publication Date: 2013.03.27 BAUER SPEZIALTIEFBAU GMBH
  • EP2395153B1 patent drawingFigure 1
  • EP2395153B1 patent drawingFigure 2
  • EP2395153B1 patent drawingFigure 3

AI summary

The method involves driving drilling and mixing tools (10) for providing overlapping bore holes, and drilling the tools into a floor. The tools are pulled back from the floor after reaching desired drilling depth. A reinforcement yoke (4) is detachably connected with an intermediate guiding carriage (16) by a connection (1) with a coupling device. The carriage is adjustably guided along a mast guide (3), and the tools are supported by the carriage up to the drilling depth. The connection of the tools with the carriage is detached for drilling a hole. An independent claim is also included for a device for manufacturing a wall panel in a floor.