Apparatus and method for driving a cavity in mining

Patent metadata

Field	Value
Publication number	US-10683750-B2
Application number	US-201615778537-A
Country	US
Kind code	B2
Filing date	Dec 5, 2016
Priority date	Dec 8, 2015
Publication date	Jun 16, 2020
Grant date	Jun 16, 2020

Abstract

A device for advancing a cavity in underground mining, including a rotary drive, an axial shaft that is rotatable together with the rotary drive about a longitudinal axis, exactly one extraction drum that is rotatable about an drum rotational axis, and a connecting arrangement which is connected to the axial shaft and which supports the extraction drum, the connecting arrangement being configured in such a way that the drum rotational axis and the longitudinal axis lie in a plane, and are oriented at an acute angle with respect to one another in the advancing direction, in all operating positions during the advancement, characterized in that the extraction drum extends over at least an effective radius of the device in the radial direction of the device during advancement of the cavity.

First claim

The invention claimed is:

1. A device for advancing a cavity in underground mining along in an advancing direction along a longitudinal axis, the device having an effective radius along a radial direction perpendicular to the longitudinal direction, comprising:
a rotary drive;
an axial shaft rotatable with the rotary drive about the longitudinal axis;
a single cylindrical extraction drum rotatable about a drum rotational axis, the extraction drum including a working face extending between opposite ends of the extraction drum, the working face having cutting rollers disposed at each of the opposite ends;
a connecting arrangement connected to the axial shaft and supporting the extraction drum with the drum rotational axis and the longitudinal axis disposed in a common plane and the drum rotational axis oriented at a fixed, acute angle with respect to the longitudinal axis in the advancing direction during advancement of the device in the advancing direction; and
the extraction drum extending beyond the effective radius of the device in the radial direction during advancement of the device in the advancing direction.

2. The device of claim 1 , further comprising a feed unit with which the axial shaft is movable between a starting position and an advancing position in the direction of the longitudinal axis.

3. The device of claim 1 , wherein the connecting arrangement further comprises a connecting arm oriented at a right angle to the longitudinal axis.

4. The device of claim 3 , wherein the connecting arm extends on first and second sides of the longitudinal axis.

5. The device of claim 3 , further comprising drum retaining arms for retaining the extraction drum, the drum retaining arms mounted in end areas of the connecting arm, and wherein the drum retaining arms have different lengths in the direction of the longitudinal axis.

6. The device of claim 5 , further comprising support arms oriented at right angles to the connecting arm, the support arms mounted on the connecting arm between the drum retaining arms.

7. The device of claim 6 , further comprising protective plates mounted on the drum retaining arms and on the support arms.

8. The device of claim 1 , wherein the connecting arrangement has an excavation material receiving space.

9. The device of claim 8 , wherein the excavation material receiving space is radially outwardly open.

10. The device of claim 8 , wherein the excavation material receiving space is operable and reclosable on a side thereof facing away from the extraction drum by means of a closure.

11. The device of claim 10 , wherein in an operating position of the connecting arrangement, the closure is disposed proximate a discharging device for discharging removed excavation material.

12. The device of claim 1 , wherein the cutting rollers are disposed over an entire extent of the working face between the opposite ends of the extraction drum.

13. A method for advancing a cavity in underground mining using the device of claim 1 , comprising the steps of:
rotating the extraction drum only about the drum rotational axis while transferring the extraction drum from a starting position to an advancing position during an advancement cycle; and
rotating the extraction drum about the longitudinal axis and about the drum rotational axis.

14. The method of claim 13 , wherein the device further comprises a feed unit with which the axial shaft is movable between the starting position and the advancing position in the direction of the longitudinal axis, the method further comprising the additional step of:
rotating the drum about the drum rotational axis by at least 360 degrees.

15. The method of claim 14 , further comprising displacing a machine frame of the device in the direction of the longitudinal axis.

16. A device for advancing a cavity in underground mining in an advancing direction along a longitudinal axis, the device having an effective radius along a radial direction perpendicular to the longitudinal direction, comprising:
a rotary drive;
an axial shaft rotatable with the rotary drive about the longitudinal axis;
a single extraction drum rotatable about a drum rotational axis;
a connecting arrangement connected to the axial shaft and supporting the extraction drum with the drum rotational axis and the longitudinal axis disposed in a common plane and the drum rotational axis oriented at an acute angle with respect to the longitudinal axis in the advancing direction during advancement of the device in the advancing direction; and
the extraction drum extending beyond the effective radius of the device in the radial direction during advancement of the device in the advancing direction;
wherein the connecting arrangement has an excavation material receiving space operable and reclosable on a side thereof facing away from the extraction drum by means of a closure.

17. The device of claim 16 , wherein in an operating position of the connecting arrangement, the closure is disposed proximate a discharging device for discharging removed excavation material.

18. A method for advancing a cavity in underground mining in an advancing direction along a longitudinal axis, the device having an effective radius along a radial direction perpendicular to the longitudinal direction comprising:
a rotary drive;
an axial shaft rotatable with the rotary drive about the longitudinal axis;
a single extraction drum rotatable about a drum rotational axis;
a connecting arrangement connected to the axial shaft and supporting the extraction drum with the drum rotational axis and the longitudinal axis disposed in a common plane and the drum rotational axis oriented at an acute angle with respect to the longitudinal axis in the advancing direction during advancement of the device in the advancing direction; and
the extraction drum extending beyond the effective radius of the device in the radial direction during advancement of the device in the advancing direction, comprising the steps of:
rotating the extraction drum only about the drum rotational axis while transferring the extraction drum from a starting position to an advancing position during an advancement cycle; and
rotating the extraction drum about the longitudinal axis and about the drum rotational axis.

19. The method of claim 18 , wherein the device further comprises a feed unit with which the axial shaft is movable between the starting position and the advancing position in the direction of the longitudinal axis, the method further comprising the additional step of:
rotating the drum about the drum rotational axis by at least 360.

20. The method of claim 19 , further comprising
displacing a machine frame of the device in the direction of the longitudinal axis.

Assignees

• Herrenknecht Ag

Inventors

• Couchoud Timothée
• Edelmann Thomas Joseph
• Rennkamp Patrick Michael
• Cousseau Frédéric Robert

Classifications

• E21B4/18 Primary

  Anchoring or feeding in the borehole · CPC title

• E21C27/22 Primary

  by rotary drills with breaking-down means, e.g. wedge-shaped drills {, i.e. the rotary axis of the tool carrier being substantially perpendicular to the working face, e.g. MARIETTA-type (similar machines for tunneling E21D9/102)} · CPC title

• E21B7/28

  Enlarging drilled holes, e.g. by counterboring · CPC title

• E21B10/10

  with roller axle supported at both ends · CPC title

• E21D9/1006

  with rotary cutting tools (for cutting simultaneously the whole cross-section E21D9/11; drill bits E21B10/00) · CPC title