Trenchless Boring Device for Stable Rock
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing trenchless pipeline laying methods are limited to loose rock and struggle with controlled drilling material removal, often requiring significant overcutting.
Innovation Solution
A boring and laying device with a conveying portion and pump for targeted drilling material removal, featuring a raise-boring head with cutting rollers and a rotationally decoupled functional portion, along with hydraulic cylinders for movability and lubrication, and a suction element for efficient drilling mud management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional reamer methods are used to expand the borehole, then the borehole can be enlarged to final diameter, but considerable overcutting is required to ensure drillings can be transported away
Solution Approach 1:
The patent extracts the drilling material removal function from the reamer expansion process by introducing a separate conveying portion with receiving elements and pump system. This allows the reamer to expand the borehole to precise final diameter without requiring excessive overcutting, as the conveying system actively removes drillings from the borehole during the expansion process.
Solution Approach 2:
The patent introduces a conveying portion as an intermediary system between the reamer and the borehole wall. This intermediary system with receiving elements and pump actively manages drilling material removal, enabling precise borehole expansion without the need for considerable overcutting that would otherwise be required to facilitate drillings transport.
2Adaptability or versatility
If existing HDD methods are used, then pipeline laying can be achieved, but the methods are limited to loose rock and unstable building ground
Solution Approach 1:
The patent creates a universal boring and laying device that combines multiple functions: the boring head with cutting rollers for rock loosening, the conveying portion with receiving elements for drillings removal, and the pump system for active transport. This multi-functional system enables reliable operation in both stable rock and loose soil conditions, overcoming the limitations of conventional HDD methods.
Solution Approach 2:
The patent replaces the passive mechanical reamer system with an active system combining mechanical cutting rollers and hydraulic pump-driven conveyance. This substitution enables controlled drilling material removal through the pump system, providing reliability in stable rock where conventional passive systems fail.
3Productivity
If pump systems are used for drilling material removal, then controlled removal is achieved, but the device complexity increases
Solution Approach 1:
The patent merges the conveying portion with receiving elements directly onto the boring head assembly. The pump system is integrated into the overall device structure, combining drilling material removal functionality with the boring and pipeline laying operations. This merging reduces overall system complexity compared to using separate conventional HDD systems.
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
Enables trenchless pipeline laying in stable rock with minimal overcutting, efficient drilling material removal, and reduced wear, allowing for pipeline installation in solid rock with average strengths greater than 150 MPa.
Implementation Method 1
a pump for suctioning and conveying away the drillings loosened by the boring head is arranged in the functional portion
Implementation Method 2
a boring head for loosening the rock, wherein the boring head has a connection for a pilot bore linkage and a connection for a following element of the boring and laying device, with a rotary element
Implementation Method 3
hydraulic cylinders for movability and lubrication
Implementation Method 4
hydraulic cylinders for movability and lubrication
Data Source
AI summary
Methods and devices for a boring and laying device for the trenchless laying of a pipeline, including a boring head, wherein the boring head includes a connection for a pilot bore linkage, wherein a pilot bore is produced from a starting point to a destination point along a predetermined boring line, a pump for suctioning and conveying away the drillings, a conveying portion behind the boring head in which at least one suction element for receiving and conveying away drillings, and a connecting portion including a connection for the pipeline. The pilot borehole is expanded, and simultaneously the pipeline is laid by pulling the pilot bore linkage out of the borehole on one side and/or by pushing the pipeline into the borehole, wherein drillings are hydraulically received behind the boring head of the boring and laying device and conveyed away out of the borehole with a pump.