EP3216974A1 - Tete de forage pour un dispositif de forage destine a la creation de trous de forage dans un sol de fondation insuffisamment porteur - Google Patents

Tete de forage pour un dispositif de forage destine a la creation de trous de forage dans un sol de fondation insuffisamment porteur Download PDF

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Publication number
EP3216974A1
EP3216974A1 EP16159720.8A EP16159720A EP3216974A1 EP 3216974 A1 EP3216974 A1 EP 3216974A1 EP 16159720 A EP16159720 A EP 16159720A EP 3216974 A1 EP3216974 A1 EP 3216974A1
Authority
EP
European Patent Office
Prior art keywords
plate
drill head
arcuate
drill
drilling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16159720.8A
Other languages
German (de)
English (en)
Other versions
EP3216974B1 (fr
Inventor
Daniel Leuenberger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marti Gruendungstechnik AG
Original Assignee
Marti Gruendungstechnik AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marti Gruendungstechnik AG filed Critical Marti Gruendungstechnik AG
Priority to PL16159720T priority Critical patent/PL3216974T3/pl
Priority to EP16159720.8A priority patent/EP3216974B1/fr
Priority to LTEP16159720.8T priority patent/LT3216974T/lt
Publication of EP3216974A1 publication Critical patent/EP3216974A1/fr
Application granted granted Critical
Publication of EP3216974B1 publication Critical patent/EP3216974B1/fr
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Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/44—Bits with helical conveying portion, e.g. screw type bits; Augers with leading portion or with detachable parts
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/72—Pile shoes
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements

Definitions

  • the present invention relates to a drill head for creating boreholes in insufficiently supporting ground by displacement of the soil material, which drill head can be placed on a drill pipe of the drilling device and with the drill pipe forms a secured against rotation, releasable connection and the drill head has a base plate, with which is the Bohrrohrende closed, on which base plate at least one substantially perpendicular thereto aligned drill head plate can be placed.
  • piles for example, will be used to construct this structure. These transfer the building loads to the deeper, load-bearing soil layers.
  • a drill pipe is equipped at the lower end with a drill head.
  • the drill head and the drill pipe are secured together against rotation.
  • this drill pipe is screwed under high vertical pressure to the required depth in the soil, the soil material is displaced by the volume of the drill pipe.
  • a prefabricated pile reinforcement is inserted into the drill pipe and the pipe filled with concrete.
  • the drill pipe is retracted with constant rotation.
  • the drill head separates from the drill pipe and remains in the ground.
  • the concrete located in the drill pipe flows out of the drill pipe and so fills the resulting cavity in the ground after the withdrawal of the drill pipe to the required level. After hardening of the concrete is thus obtained the loadable reinforced Verdrändungsbohrpfahl.
  • drill heads are known in many ways.
  • the publication EP A 2,146,046 shows a drill head, which is a base plate has, on which aligned perpendicular thereto drill head plates are placed, which drill head via cams, which protrude into corresponding recesses in the Bohrrohrende, with the drill pipe forms a secured against rotation, releasable connection.
  • this drill head which is very easy and inexpensive to manufacture, the holes can be easily and inexpensively created.
  • the object of the present invention is to design the drill head so that in addition to the simple and inexpensive production and the possibility of space-saving storage and transport more efficient creation of a well can be achieved.
  • the solution of this object is achieved in that in the lateral flanks of this drill head plate at least one arcuate plate is used, which is equipped with first holding means, which are held in second holding means, which are attached to the lateral edges of the drill head plate, and that the arcuate Plate is formed and inserted into the flanks of the drill head plate, that their surfaces are effective as a screw surfaces during drilling.
  • the drill head rotated by the drilling device can penetrate into the earth rapidly and more efficiently via the arcuate plate acting as a screw surface, in particular the expenditure of time for creating a borehole is reduced with such a drill head.
  • a first arcuate plate and the first arcuate plate opposite second arcuate plate can be used.
  • the symmetrical arrangement of these two arcuate plates improves the efficiency of the drill head.
  • a first drill head plate and a substantially perpendicular thereto aligned second drill head plate can be placed on the base plate, the thus with slot-shaped recesses are provided that the two drill head plates are crosswise plugged into each other, whereby a simple and stable construction of the drill head is achieved.
  • a simple construction of the drill head is also achieved by extending the first arcuate plate and the opposing arcuate plate each over a flank of the first wellhead plate and an adjacent flank of the second wellhead plate.
  • the portions of the first wellhead and the second wellhead facing away from the base plate are tapered, and a third arcuate plate is insertable in the tapered portions of the first wellhead and the second wellhead, which further improves the efficiency of the drilling operation.
  • the third arcuate plate extends over one flank of the first wellhead plate, the other flank of the second wellhead plate, and the other flank of the first wellhead plate. This improves the stability of the drill head.
  • a further advantageous embodiment of the invention consists in that the first holding means and the second holding means are formed from slot-shaped recesses and / or projections mounted in the respective arcuate plates or the drill head plates. Hubs of simple design of these compounds and the simple assembly of the drill head also results in good stability.
  • the first wellhead plate and / or the second wellhead plate is provided with cams which protrude cams through corresponding recesses mounted on the base plate, and the cervical bore cams project over the base plate and protrude into correspondingly drill pipe end mounted slots.
  • cams which protrude cams through corresponding recesses mounted on the base plate, and the cervical bore cams project over the base plate and protrude into correspondingly drill pipe end mounted slots.
  • the drill head plates and the arcuate plates can be made by cutting from a commercially available steel plate, whereby the cost can be kept low.
  • FIG. 1 a first embodiment of an inventive drill head 1 can be seen, which has a base plate 2, on which a first drill head plate 3 and a second drill head plate 4 are attached.
  • a base plate 2 on which a first drill head plate 3 and a second drill head plate 4 are attached.
  • the first drill head plate 3 and the second drill head plate 4 are aligned vertically with respect to the base plate 2, moreover, these two drill head plates 3 and 4, which are pushed into each other, as will be described later, perpendicular to each other.
  • the first drill head plate 3 and the second drill head plate 4 are each tapered in the areas facing away from the base plate 2.
  • the base plate 2 and the first wellhead plate 3 and the second wellhead plate 4 are detachably connected to an end portion of a drill pipe 5, as will also be described later.
  • This drill pipe 5 is driven in a known manner by a drilling device, not shown, about a drilling axis 6 rotating and pressed for drilling in the ground.
  • first arcuate plate 8 In the one side flank 7 of the second drill head plate 4, the front portion of a first arcuate plate 8 is inserted, whose other end portion is inserted into the one side flank 9 of the first drill head plate 3.
  • this first arcuate plate 8 has first holding means 10, which are held in second holding means 11 which are attached to the drill head plates 3 and 4, as will be described later.
  • This first arcuate plate 8 is inserted into the one lateral flank 7 of the second drill head plate 4 and into the one lateral flank 9 of the first drill head plate 3, that this is effective as a screw surfaces, this, this first arcuate plate 8 with respect to the drilling axis 6 a pitch angle ⁇ , which is about 20 degrees in the embodiment shown here, this inclination angle can of course be chosen so that the efficiency of the drilling process in the respective corresponding subsoil is the most optimal, which can be determined for example by experiments.
  • This first arcuate plate 8 is configured such that the radial distance of the outer edge of this first arcuate plate 8 from the drilling axis 6 from one area held in the second bit plate 4 to the other area held in the first bit plate 3 , is increasingly.
  • first arcuate plate 8 Symmetrical to this first arcuate plate 8 is in the first drill head plate 3 and the second drill head plate 4, a second arcuate plate 12, which is formed the same as the first arcuate plate 8, used accordingly. Further, in the tapered portion of the first wellhead plate 3 and the second wellhead plate 4, a third arcuate plate 13 is inserted, as will be explained later. Of course, it would also be conceivable to provide less than three or more than three arcuate plates, depending on the height of the drill head.
  • FIGS. 2 to 4 From the FIGS. 2 to 4 the arrangement of the first arcuate plate 8, the second arcuate plate 12 and the third arcuate plate 13 in the two drill head plates 3 and 4 can be seen.
  • FIG. 2 In particular, it can be seen how the first arcuate plate 8 extends over the one lateral flank 7 of the second wellhead plate 4 and the one lateral flank 9 of the first wellhead plate 3.
  • FIG. 4 in particular shows how the second arcuate plate 12 extends over the other lateral flank 14 of the second wellhead plate 4 and the other lateral flank 15 of the first wellhead plate 3. It can also be seen how the third arcuate plate 13 extends over the one lateral flank 9 of the first wellhead plate 3, the other lateral flank 14 of the second wellhead plate 4 and the other lateral flank 15 of the first wellhead plate 3.
  • FIG. 5 are the items to the FIGS. 1 to 4 shown illustrated first embodiment of a drill head.
  • the first drill head plate 3 and the second drill head plate 4 each have a slot-shaped recess 16 and 17, such that they can be inserted into each other, as shown in FIGS FIGS. 1 to 4 is apparent.
  • the first drill head plate 3 and the second drill head plate 4 have two cams 18 and 19, respectively, on the regions facing the base plate 2. These cams 18 and 19 can be inserted into corresponding slits 20 and 21 mounted in the base plate 2, the cams 18 and 19 protrude beyond the base plate 2 in this case.
  • the first arcuate plate 8, the second arcuate plate 12 and the third arcuate plate 13 are provided with first holding means 10. These first holding means 10 are formed as projections 26.
  • the first drill head plate 3 and the second drill head plate 4 are respectively equipped with second holding means 11.
  • These second holding means 12 are designed in particular as slot-shaped recesses 26.
  • the first arcuate plate 8, the second arcuate plate 12 and the third arcuate plate 13 with their first holding means 10 in the second holding means of the two drill head plates 3 and 4 are suspended accordingly.
  • the first arcuate plate 8 and the second arcuate plate 12 on a nose 25, which surrounds the second drill head plate 4, as in particular in FIG. 2 is apparent.
  • an optimal support of this first arcuate plate 8 and this second arcuate plate 12 in the drill head 1 is achieved.
  • FIGS. 6 to 9 a second embodiment of a drill head 1 according to the invention is shown.
  • the structure of this drill head 1 is substantially identical to the structure of the drill head, as he as the first embodiment in the FIGS. 1 to 5 is shown, thus the same reference numerals are used for the same parts, the description of the FIGS. 1 to 4 applies accordingly to the FIGS. 6 to 9 so that a further description is omitted.
  • the difference of the first embodiment shown in FIGS FIGS. 1 to 5 , and the second embodiment shown in FIGS FIGS. 6 to 10 is in FIG. 10 seen.
  • the first arcuate plate 8 and the second arcuate plate 12 have no nose 27, as the two arcuate plate 8 and 12 in do first embodiment, can be seen from the FIG.
  • the first arcuate plate 8 and the second arcuate plate 12 are each provided with a shoulder 28.
  • This shoulder 28 supports, as in particular from the FIGS. 8 and 9 it can be seen, the second drill head plate 4 from such that the can not bend during the drilling process. As a result, optimum strength of the drill head 1 is achieved.
  • FIG. 11 shows the base plate 2 of the drill head 1, which is penetrated by the cams 18 and 19 of the first drill head plate 3 and the second drill head plate 4.
  • the two cams 18 have indentations 23, in which the clip 24 can be inserted, so that the drill head 1 is held together, as already mentioned. Can engage in the cams 18 and 19, as has also already been mentioned, the corresponding end of the drill pipe. 5
  • the drill head can penetrate very efficiently into the soil to be drilled.
  • this can be brought in a very compact form on the site, since the items are each plate-shaped, the assembly of the drill head takes place on the site, which takes up little space for transport and storage.
  • the individual plate elements can be cut in the simplest way from a steel sheet, for example by a controlled laser cutting device, so that these plate shapes can be produced in a simple and cost-effective manner.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Structural Engineering (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)
EP16159720.8A 2016-03-10 2016-03-10 Tête de fôrage pour un dispositif de fôrage destiné à la création de trous de fôrage dans un sol de fondation insuffisamment porteur Active EP3216974B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL16159720T PL3216974T3 (pl) 2016-03-10 2016-03-10 Głowica wiertnicza do urządzenia wiertniczego do wykonywania otworów wiertniczych w niewystarczająco nośnym gruncie budowlanym
EP16159720.8A EP3216974B1 (fr) 2016-03-10 2016-03-10 Tête de fôrage pour un dispositif de fôrage destiné à la création de trous de fôrage dans un sol de fondation insuffisamment porteur
LTEP16159720.8T LT3216974T (lt) 2016-03-10 2016-03-10 Gręžimo įrenginio gręžimo galvutė gręžiniams mažo stabilumo grunte formuoti

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16159720.8A EP3216974B1 (fr) 2016-03-10 2016-03-10 Tête de fôrage pour un dispositif de fôrage destiné à la création de trous de fôrage dans un sol de fondation insuffisamment porteur

Publications (2)

Publication Number Publication Date
EP3216974A1 true EP3216974A1 (fr) 2017-09-13
EP3216974B1 EP3216974B1 (fr) 2018-12-26

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EP16159720.8A Active EP3216974B1 (fr) 2016-03-10 2016-03-10 Tête de fôrage pour un dispositif de fôrage destiné à la création de trous de fôrage dans un sol de fondation insuffisamment porteur

Country Status (3)

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EP (1) EP3216974B1 (fr)
LT (1) LT3216974T (fr)
PL (1) PL3216974T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4227467A1 (fr) 2022-02-09 2023-08-16 Marti Gründungstechnik AG Mèche de forage pour un dispositif de forage permettant de créer des trous de forage dans un terrain de fondation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10544626B2 (en) 2016-04-18 2020-01-28 A.W.C. Distributing, Inc. Cutting rate control for an ice drill

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8908131U1 (fr) * 1989-07-04 1990-10-31 Delmag Maschinenfabrik Reinhold Dornfeld Gmbh & Co, 7300 Esslingen, De
DE19734068A1 (de) * 1997-08-06 1999-02-11 Verstraeten Beheersmij Bv Bohrspitze
EP1580397A1 (fr) * 2004-03-26 2005-09-28 BAUER Maschinen GmbH Trépan de forage
EP1860274A1 (fr) * 2006-04-26 2007-11-28 BAUER Maschinen GmbH Pointe de forage
EP2146046A1 (fr) 2008-07-15 2010-01-20 Marti Gründungstechnik AG Tête de forage pour un dispositif de forage destiné à la création de trous de forage dans un sol de fondation insuffisamment portant

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8908131U1 (fr) * 1989-07-04 1990-10-31 Delmag Maschinenfabrik Reinhold Dornfeld Gmbh & Co, 7300 Esslingen, De
DE19734068A1 (de) * 1997-08-06 1999-02-11 Verstraeten Beheersmij Bv Bohrspitze
EP1580397A1 (fr) * 2004-03-26 2005-09-28 BAUER Maschinen GmbH Trépan de forage
EP1860274A1 (fr) * 2006-04-26 2007-11-28 BAUER Maschinen GmbH Pointe de forage
EP2146046A1 (fr) 2008-07-15 2010-01-20 Marti Gründungstechnik AG Tête de forage pour un dispositif de forage destiné à la création de trous de forage dans un sol de fondation insuffisamment portant

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4227467A1 (fr) 2022-02-09 2023-08-16 Marti Gründungstechnik AG Mèche de forage pour un dispositif de forage permettant de créer des trous de forage dans un terrain de fondation

Also Published As

Publication number Publication date
LT3216974T (lt) 2019-03-12
PL3216974T3 (pl) 2019-05-31
EP3216974B1 (fr) 2018-12-26

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