Steering Head With Retractable Flaps for Hard-Rock Auger Boring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing steering heads for auger boring machines are ineffective in penetrating harder materials such as rock or soil with compressive strengths above 7,000 pounds per square inch (PSI), as they encounter resistance and damage due to protruding components, and lack sufficient visibility and alignment mechanisms.
Innovation Solution
A steering head design with retractable flaps and hinges within a defined perimeter, enhanced visibility using multiple colored lights, and extendable cutting bits, along with hydraulic cylinders for flap deployment, to facilitate penetration of high-compressive-strength materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If steering heads use protruding components such as steering flaps, hinges, and covers that extend radially outward, then these components can perform steering and protective functions, but they generate forces that resist forward movement and cause damage when penetrating hard materials with compressive strengths above 7,000 PSI
Solution Approach 1:
The steering flaps are designed to be retractable rather than fixed, allowing them to dynamically change position between extended (for steering) and retracted (for penetration) states. This dynamic configuration resolves the contradiction by enabling the system to adapt its structure based on operational requirements.
Solution Approach 2:
The steering head components are segmented into movable and fixed portions, with the ability to separate the steering function (flaps) from the structural core. This segmentation allows the steering elements to be isolated and retracted when not needed, preventing interference with penetration into hard materials.
2Reliability
If steering flaps are fully retracted to eliminate protruding components, then resistance during penetration is reduced, but the operator loses visibility and alignment assistance
Solution Approach 1:
Light elements are introduced as intermediary components that provide visibility without requiring physical protrusions. These lights serve as mediators between the steering head and the operator, enabling alignment assistance through optical rather than mechanical means.
Solution Approach 2:
The mechanical visibility system (protruding components that provide physical reference points) is replaced with an optical system (lights). This substitution eliminates the need for mechanical protrusions while maintaining the alignment and visibility functions.
3Device complexity
If cutting area diameter does not extend beyond steering head outer perimeter, then the structure remains compact and manageable, but the cutting capability is insufficient for high-compressive-strength materials
Solution Approach 1:
The cutting head is designed with extendable cutting bits that can dynamically increase the cutting diameter beyond the steering head's outer perimeter when needed, while maintaining a compact retracted state for structural manageability.
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 design allows effective penetration of materials with compressive strengths up to 30,000 PSI, reduces component damage, and improves visibility and alignment, enabling efficient excavation.
Implementation Method 1
hydraulic cylinders for flap deployment
Data Source
AI summary
A steering head has a body and an auger extending through the body. An outer surface of the steering head may have a rear portion that does not extend beyond a maximum perimeter of the exterior of a forward portion. An outer surface of the steering head may have openings that receive respective steering flaps. The steering head may have cutting bits that pivot between extracted and retracted positions in response to the auger's rotation. The auger may have a helical blade that contacts an internal surface of the body. The steering head may have three light elements that emit light visible at the rear of the steering head.