US 10,927,628 B2Granted

Drilling bucket and method for producing a bore in the ground

AssigneeBAUER Maschinen GmbH

InventorsRoland Artur Braun, Manfred Schweiger, Fabian Denk, Ulli Wiedenmann, Andreas Stimpfle-Ziegler

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Abstract

The invention relates to a drilling bucket and a method for producing a bore with a drilling bucket, wherein the drilling bucket is driven in a rotating manner and introduced into the ground, wherein ground material is removed and received in an internal space of a tubular base body of the drilling bucket, and for emptying the drilling bucket is withdrawn from the bore and a bottom on the tubular base body is folded open. According to the invention the drilling bucket is rotated in a reversing manner during emptying, wherein ground material received in the drilling bucket is pressed against at least one impact wall and, in doing so, the ground material is specifically compacted and deformed for easier loosening from the internal space.

Claims8

Dependent claims

Drilling bucket having a tubular base body, on the upper side of which a connecting means to a drill bar is arranged and on the underside of which a bottom is supported such that it can be folded open, wherein on the bottom a cutting means for removing ground material and at least one through-opening is provided, which is designed for the passage of removed ground material into an internal space of the tubular base body,

wherein
in the internal space of the tubular base body at least one impact wall is fixed which substantially extends over the entire axial length of the internal space, limits the internal space of the tubular base body in some areas and forms an impact surface for ground material received in the internal space, and
the at least one impact wall is designed so as to be inclined with respect to a longitudinal axis of the tubular base body and a distance of the at least one impact wall decreases from the longitudinal axis upwards.

Dependencies are inferred from the claim text.

Facts

Application: 16/840,270Filed 3 Apr 2020
Priority: DE 10 2019 108 8064 Apr 2019
Published: US 2020/0318450 A18 Oct 2020
Granted: 23 Feb 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

E21B 7/006
With helical conveying means: combined with a bucket-type container
E21B 27/00
Containers for collecting or depositing substances in boreholes or wells
E21B 7/003
Special methods or apparatus for drilling: drilling with mechanical conveying means
E21B 10/42
Drill bits: rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits