Device for sinking a vertical borehole

Patent metadata

Field	Value
Publication number	US-12553286-B2
Application number	US-202017781445-A
Country	US
Kind code	B2
Filing date	Dec 4, 2020
Priority date	Dec 4, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

The invention relates to a device for sinking a vertical borehole, more particularly a shaft, an extraction borehole in a deposit body, or a foundation borehole in the ground, with at least one excavating tool for excavating material from the bottom of the borehole, with an at least one conveyance means arranged in the active region of the at least one excavating tool for conveying away from the borehole material excavated from the bottom, with a machine frame on which at least two bracing elements are arranged for locking the device in the borehole during boring, with at least one means for vertically raising and lowering the boring device in the borehole and with at least one drive for rotating the excavation tool.

First claim

The invention claimed is:

1 . A drilling device for sinking a vertical borehole, including a shaft, an extraction borehole in a deposit body, or a foundation borehole in the ground, comprising:
at least one excavating tool configured to excavate material at a bottom of the borehole; at least one conveying element, arranged in the active region of the at least one excavating tool, configured to discharge material excavated at the bottom out of the borehole; a machine frame on which at least two bracing elements for locking the device in the borehole during drilling are arranged; at least one element configured to vertically raise and lower the drilling device in the borehole, and; at least one drive configured to rotate the excavating tool wherein the element configured to vertically raise and lower the drilling device in the borehole is a strand-jack system comprising at least one jack unit with at least one cylinder and with at least one strand or a strand bundle per jack unit, said strand or strand bundle being connected to the machine frame.

2 . The drilling device as claimed in claim 1 , wherein the borehole is filled with a liquid, including at least one of water or a bentonite suspension.

3 . The drilling device as claimed in claim 2 , wherein discharge is via a reverse-circulation method.

4 . The drilling device as claimed in claim 1 , wherein the at least one conveying element configured to discharge material excavated at the bottom out of the borehole includes a vertical conveying pipeline which extends through the machine frame.

5 . The drilling device as claimed in claim 4 , wherein the conveying pipeline does not rotate.

6 . The drilling device as claimed in claim 4 , wherein the conveying pipeline is constructed from pipe sections, to one of successively lengthen or shorten the conveying pipeline.

7 . The drilling device as claimed in claim 6 , wherein at least one pipe section includes at least one flange element for connecting to a further pipe section.

8 . The drilling device as claimed in claim 6 , wherein at least one pipe section includes at least one guide element, said at least one guide element guiding an element of a drivetrain, and said guide element including at least one bearing element.

9 . The drilling device as claimed in claim 6 , wherein at least one pipe section includes at least one guide element for a supply line.

10 . The drilling device as claimed in claim 1 , wherein the excavating tool includes a suction chamber for loosened rock.

11 . The drilling device as claimed in claim 1 , wherein the excavating tool is a cutting wheel, with full-face cutting, including extendable and retractable edge-cutting tools, including disks or chisels.

12 . The drilling device as claimed in claim 1 , wherein the excavating tool is displaceable in the excavating direction with respect to the machine frame.

13 . The drilling device as claimed in claim 1 , wherein at least one feed system, is a cylinder, is which presses the excavating tool for loosening rock against the bottom of the borehole to generate the necessary loosening pressure.

14 . The drilling device as claimed in claim 1 , wherein the at least one drive is at least one of a hydraulic or electric drive.

15 . The drilling device as claimed in claim 14 , wherein the drive is arranged on the drilling device.

16 . A drilling device for sinking a vertical borehole, including a shaft, an extraction borehole in a deposit body, or a foundation borehole in the ground, comprising:
at least one excavating tool configured to excavate material at a bottom of the borehole; at least one conveying element, arranged in the active region of the at least one excavating tool, configured to discharge material excavated at the bottom out of the borehole; a machine frame on which at least two bracing elements for locking the device in the borehole during drilling are arranged; at least one element configured to vertically raise and lower the drilling device in the borehole, and; at least one drive configured to rotate the excavating tool, wherein the at least one drive includes a drive unit above ground which is connected to a drive element of the excavating tool, and wherein the drive unit is connected to the drive element of the excavating tool via at least one telescopic drivetrain.

17 . The drilling device as claimed in claim 16 , wherein the connection is via a gear mechanism, including a reduction-gear mechanism.

18 . The drilling device as claimed in claim 16 , wherein the drivetrain includes at least one of individual rods or tube elements.

19 . The drilling device as claimed in claim 18 , wherein the at least one of individual rods or tube elements are separably connected to one another via connecting elements including at least one of threads or claw couplings.

20 . The drilling device as claimed in claim 18 , wherein the at least one of individual rods or tube elements are guided along the pipe section via guide elements included along the pipe sections in bearing elements.

21 . The drilling device as claimed in claim 16 , wherein at least one rod is telescopic, to enable the drilling stroke of the excavating tool.

22 . The drilling device as claimed in claim 16 , wherein the at least one drive includes at least one gear unit to provide the necessary speed of rotation of the excavating tool.

Assignees

• Herrenknecht Ag

Inventors

• Feisst Albert
• Rennkamp Patrick
• Schwab Tilmann

Classifications

• E21D1/06 Primary

  with shaft-boring cutters (drilling machines E21B, E21C) · CPC title

• E21B4/18 Primary

  Anchoring or feeding in the borehole · CPC title