Device for sinking a shaft and method for sinking a shaft

Patent metadata

Field	Value
Publication number	US-9995138-B2
Application number	US-201414897071-A
Country	US
Kind code	B2
Filing date	Jun 2, 2014
Priority date	Jun 25, 2013
Publication date	Jun 12, 2018
Grant date	Jun 12, 2018

Abstract

A device and method for sinking a shaft during a sinking cycle, in which a support unit is moved once and a boring unit is moved at least twice by means of support cylinders and displacement cylinders. Due to such configuration, an efficient sinking operation is obtained.

First claim

The invention claimed is:

1. A device for sinking a shaft in an axial sinking direction, comprising:
a carrier unit disposed on a rear side of the device in the axial sinking direction, the carrier unit positionable in a selected axial cycle start position along the axial sinking direction against a force of gravity;
a boring unit disposed on a front side of the device in the axial sinking direction, the boring unit comprising:
a plurality of bracing modules; and
a plurality of displacement cylinders operable in the axial sinking direction;

a plurality of carrier cylinders connecting the carrier unit and the boring unit, the carrier cylinders operable in the axial sinking direction;
the boring unit further comprising a single boring platform on which all of the bracing modules, the displacement cylinders, and the carrier cylinders are mounted; and
a bore head connected to the displacement cylinders for sinking the shaft when the bracing modules are activated for bracing.

2. The device of claim 1 , further comprising a plurality of cables connected to the carrier unit for positioning the carrier unit.

3. The device of claim 2 , wherein the carrier unit includes a shaft platform on which the cables and the carrier cylinders are mounted.

4. The device of claim 1 , wherein the carrier cylinders and the displacement cylinders are mounted on a support frame of the boring unit.

5. The device of claim 1 , further comprising a pneumatic conveying unit having a suction line via which material excavated by the boring unit is conveyable toward the carrier unit.

6. The device of claim 5 , wherein the conveying unit includes two conveyor buckets and a swivel chute via which material excavated by the boring unit is dischargeable by the suction line.

7. The device of claim 1 , further comprising a hydraulic conveying unit having a main conveying line via which material excavated by the boring unit is conveyable toward the carrier unit.

8. The device of claim 1 , wherein the bracing modules are extendable in a radial direction for bracing the boring unit against a wall of the shaft.

9. The device of claim 1 , wherein the boring platform supports a rotary drive for driving the bore head.

10. The device of claim 9 , wherein the boring platform includes a support frame, the displacement cylinders connected between the support frame and the rotary drive.

11. The device of claim 1 , further comprising a shaft platform disposed on a rear side of the boring platform in the axial sinking direction, the carrier cylinders connected between the shaft platform and the boring platform.

12. The device of claim 1 , further comprising a shaft platform disposed on a rear side of the boring platform in the axial sinking direction, the shaft platform including a plurality of radial stabilizers for stabilizing the carrier unit in a radial direction.

13. A method for sinking a shaft using the device of claim 1 , comprising the steps of:
a) positioning the carrier unit in a first axial cycle start position with the carrier cylinders in a retracted position and positioning the boring unit at a distance from the carrier unit with the displacement cylinders in a retracted position;
b) bracing the boring platform via the bracing modules;
c) actuating a bore head of the boring unit to sink the shaft by extension of the displacement cylinders to an first extended position;
d) detaching the bracing modules;
e) extending the carrier cylinders to an extended position and retracting the displacement cylinders to a retracted position;
f) bracing the boring platform via the bracing modules;
g) actuating the bore head for further sinking the shaft by extension of the displacement cylinders to a second extended position;
h) detaching the bracing modules;
i) lowering the carrier unit into a second axial cycle start position with retraction of the carrier cylinders and the displacement cylinders to retracted positions; and
j) repeating said steps a) through i) until a desired sinking depth is reached.

14. The method of claim 13 , wherein the displacement cylinders in said steps a), c), e), g), and i) are selectively disposed in one of a maximally retracted position and a maximally extended position.

15. The method of claim 13 , wherein the carrier cylinders in said steps a), e), and i) are selectively disposed in one of a maximally retracted position and a maximally extended position.

16. The method of claim 13 , wherein the carrier cylinders in said step e) are selectively disposed in at least one intermediate position between a maximally retracted position and a maximally extended position, and said steps b), c), d), e), f), g), and h) are each carried out with said carrier cylinders selectively disposed in an intermediate position between a maximally retracted position and a maximally extended position, and in said step e), extension of the carrier cylinders is carried out to one of a maximally extended position and an intermediate position between the intermediate position of said steps b), c), d), e), f), g), and h) and the maximally extended position.

Assignees

• Herrenknecht Ag

Inventors

• Burger Werner

Classifications

• E21D1/06 Primary

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

• E21D1/03 Primary

  mechanically, {e.g. by loading shovels or loading buckets, scraping devices, conveying screws}(E21D1/08 takes precedence) · CPC title

• E21B15/00

  Supports for the drilling machine, e.g. derricks or masts · CPC title

• E21B7/00

  Special methods or apparatus for drilling · CPC title