Drill head for creating a borehole in the ground
The drill head's innovative suction box and nozzle system with adjustable features address the inefficiencies in soil extraction, enhancing suction efficiency and reducing blockages for improved performance in vertical bore drilling.
EP4617472A2Pending Publication Date: 2025-09-17HERRENKNECHT AG
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Patent Information
- Application Number
- EP2025193214
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2019-07-24
- Filing Date
- 2020-07-21
- Publication Date
- 2025-09-17
AI Technical Summary
Technical Problem
Existing drill heads for creating vertical bores in the ground face challenges in efficiently extracting loosened soil while minimizing blockages and improving performance.
Method used
The drill head design includes an elongated suction box with a tapered width and adjustable height, combined with nozzles and tools for soil loosening and liquefaction, and a deflection area to redirect the flow, allowing for improved material transport and reduced blockages.
Benefits of technology
This design significantly enhances the suction efficiency, reduces blockages, and adapts to various geological conditions, ensuring effective soil extraction with minimal material accumulation.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a drill head for creating a substantially vertical bore in the ground, comprising a body which can be connected to a rotary drive of a drilling device, with drilling tools arranged on the body for loosening the soil at a working face of the bore, with a suction device for transporting away the loosened soil at the working face, which suction device can be connected to a pump, wherein the suction device has an opening region arranged on the body with at least one opening in the region of the drilling tools at the working face.It is advantageous that at least one nozzle for emitting a jet of a medium, preferably air or a liquid, is provided on the underside of the drill head, and that the jet causes the loosened soil to move into an area of the working face which is crossed by the opening when the drill head rotates, that the jet strikes a guide plate, thereby changing the direction of movement of the loosened soil in the direction of the opening area, and that the guide plate is arranged as a straight or curved element on the underside of the drill head, and that the arrangement is diagonal or at least partially circumferential.
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