EP3517727B1 - Outil de carottage - Google Patents

Outil de carottage Download PDF

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Publication number
EP3517727B1
EP3517727B1 EP18153204.5A EP18153204A EP3517727B1 EP 3517727 B1 EP3517727 B1 EP 3517727B1 EP 18153204 A EP18153204 A EP 18153204A EP 3517727 B1 EP3517727 B1 EP 3517727B1
Authority
EP
European Patent Office
Prior art keywords
drilling tool
tubular body
receiving sleeve
core drilling
plug
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.)
Active
Application number
EP18153204.5A
Other languages
German (de)
English (en)
Other versions
EP3517727A1 (fr
Inventor
Roland Arthur Braun
Michael Stohl
Fabian Denk
Stefan Bachhuber
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.)
Bauer Maschinen GmbH
Original Assignee
Bauer Maschinen GmbH
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 Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP18153204.5A priority Critical patent/EP3517727B1/fr
Publication of EP3517727A1 publication Critical patent/EP3517727A1/fr
Application granted granted Critical
Publication of EP3517727B1 publication Critical patent/EP3517727B1/fr
Active legal-status Critical Current
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
    • E21B25/00—Apparatus for obtaining or removing undisturbed cores, e.g. core barrels or core extractors
    • 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
    • E21B10/02—Core bits

Definitions

  • the invention relates to a core drilling tool for earth or rock drilling with an outer first tubular body, on the lower pipe edge of which removal elements are provided for removing soil or rock material and which has an upper ceiling section, a connecting device which is attached to the ceiling section and for transmitting a drilling torque is formed, and at least one inner second tubular body, on the lower pipe edge of which removal elements are provided for removing soil or rock material and which is arranged within the first tubular body, according to the preamble of claim 1.
  • a first type concerns so-called full-cut drilling tools, in which the pending earth or rock material is removed over the entire drilling diameter. Such drilling tools are used in particular in loose soils.
  • So-called core drilling tools are used for hard soils, especially rocky soils or rocks.
  • Such core drilling tools have a tubular body, on the lower tube edge of which removal elements are arranged. In this way, an annular borehole is created during drilling, whereby an inner drill core remains.
  • the pending drill core is received in the cavity of the tubular body.
  • the drill core breaks above a certain length due to the vibrations and shocks that occur during drilling. The drill core loosened in this way can be pulled out of the borehole with the core drill tool.
  • CN 102 011 548 A known to arrange one or more further inner tubular bodies coaxially to one another within an outer first tubular body. This allows a pending drill core to be divided into one or more additional ring-shaped cores. These then break more easily than a solid, continuous drill core.
  • Such a core drilling tool thus represents an intermediate form between a full-cut drilling tool and a normal core drilling tool.
  • a core drilling tool in which a pilot drill protruding in the drilling direction is arranged coaxially within the tubular body.
  • the pilot is provided on a stationary rod which extends coaxially through the tubular body.
  • Such a core drilling tool produces a cylindrical drill core with a center hole.
  • From the US 9,249,631 B2 also shows a core drilling tool with a central pilot.
  • the pilot is arranged on a displaceable rod so that it can be withdrawn to the rear after central drilling.
  • a generic core drilling tool is from the GB 686 372 A known. Two concentric tubular bodies are screwed onto an underside of a support body. A drive belt pulley is fastened to the top of the support body by means of screws.
  • the invention is based on the object of specifying a core drilling tool which can be used particularly flexibly.
  • a coupling device is provided on the first tubular body, with which the second tubular body is detachably attached to the first tubular body.
  • a basic idea of the invention is to releasably arrange the at least one second tubular body within the first tubular body.
  • a coupling device is provided with which the second tubular body is preferably connected to the first tubular body in a form-fitting manner.
  • the coupling device can be locked and unlocked so that, for example, the second tubular body can be easily removed.
  • the drilling tool with the first tubular body can thus also be used as a conventional core drilling tool.
  • the core drilling tool according to the invention offers the possibility of easily changing the at least one second tubular body, depending on the type of rock in question, in order to replace it with a new second tubular body or a differently designed second tubular body. The differences can lie in the axial length, the diameter and / or the design of the removal elements of the second tubular body.
  • a particularly preferred variant of the core drilling tool according to the invention can be seen in the fact that the removal elements are designed as fixed cutting teeth and / or rotatably mounted roller bodies.
  • the exchangeable removal elements can in particular be adapted to the existing soil conditions.
  • the connecting device on the first tubular body has a first receiving sleeve with an upwardly directed receiving opening for a form-fitting connection.
  • the connecting device can in particular be a so-called Kelly box, which is designed for connection to a drill rod, in particular a Kelly bar.
  • the first receiving sleeve can have a polygonal receiving hole, in particular a square hole. Such angular holes are advantageous for a torque transmission.
  • Axial securing can in particular be achieved by bolting with bolts directed transversely to the drilling direction.
  • the connector is attached to the upper ceiling portion of the first tubular body.
  • the ceiling section can be a closed or open plate which is welded to the cylindrical first tubular body.
  • the ceiling section can, however, also be constructed from radially directed struts.
  • a preferred embodiment consists in that the coupling device is arranged on the underside of the ceiling section. The ceiling section thus carries both the connecting device and the coupling device.
  • the coupling device has a second receiving sleeve with a downwardly directed receiving opening.
  • the second receiving sleeve can preferably be designed similar or identical to the first receiving sleeve, but with an opposite arrangement.
  • first receiving sleeve and the second receiving sleeve are connected to one another or formed in one piece.
  • the first receiving sleeve and the second receiving sleeve can be constructed as identical parts, which are welded to one another in an opposing arrangement or are connected in some other suitable manner.
  • a particularly stable design results from the fact that the first receiving sleeve and the second receiving sleeve are formed in one piece on a sleeve element.
  • the coupling device has a plug-in element with a first plug-in area which can be plugged into the second receiving sleeve.
  • the plug-in element can itself be attached to the second tubular body in a fixed or detachable manner.
  • the second receiving sleeve preferably also has a polygonal, in particular square, hole.
  • the first plug-in area of the plug-in element is then correspondingly polygonal, in particular square.
  • Axial locking can also be achieved by bolting in a transverse direction.
  • a core drilling tool that can be used particularly flexibly is achieved in that a third receiving sleeve with an upwardly directed receiving opening is provided on an upper side of the second tubular body.
  • This third receiving sleeve can preferably be designed in the same way as the first and / or the second receiving sleeve.
  • the third receiving sleeve also preferably has a polygonal receiving hole, in particular a square hole. From a manufacturing point of view, it is particularly advantageous that at least one receiving sleeve is designed as a Kelly box. All receiving sleeves are preferably designed as Kelly boxes.
  • Kelly boxes are standardized receiving sleeves with a square hole, into which corresponding plug-in areas on Kelly bars or corresponding drill rods can usually be inserted for torque transmission.
  • a conventional suitable core drilling tool can be used as the inner second tubular body, which is inserted into the first tubular body with a larger diameter.
  • the plug-in element has a second plug-in area which is directed opposite to the first plug-in area and is designed for connection to the third receiving sleeve.
  • the rod-shaped or rod-shaped plug-in element thus represents an intermediate part between the first tubular body and the second tubular body.
  • the plug-in areas are preferably designed in the same way and in particular match standardized Kelly boxes.
  • the plug-in element for setting a relative position between the first tubular body and the second tubular body can be replaced by a plug-in element of different lengths.
  • the plug-in element can serve as an adapter, so to speak, in order to connect the tubular bodies to one another in different arrangement variants. For example, by selecting a plug element with a different length, it is possible that either the first tubular body leads the second tubular body or the second tubular body leads the first tubular body as a kind of centering.
  • the removal elements of the first and second tubular body can also lie in a common removal plane. A particularly large variety of arrangements can thus be achieved in an efficient manner by simply exchanging the plug-in element.
  • the invention is not limited to two tubular bodies. Several tubular bodies with different diameters can be provided, all or some of which, as described above, can be coupled to one another.
  • FIG Figures 1 and 2 An embodiment of a core drilling tool 5 according to the invention is shown schematically in FIG Figures 1 and 2 shown.
  • the core drilling tool 5 has an outer, first tubular body 10 with a first larger diameter and an inner, second tubular body 40 with a second smaller diameter inserted therein.
  • the diameters of the two tubular bodies 10, 40 are so different that an annular cavity is formed between the first tubular body 10 and the second tubular body 40 arranged therein.
  • a cylindrical cavity is formed inside the second tubular body 40.
  • a plurality of removal elements 15 for removing earth or rock material are attached to a pipe edge 14 of the first tubular body 10.
  • the removal elements 15 have obliquely directed cutting teeth 16 and rotatably mounted roller bodies 18, which are designed in particular for working off hard rock material. In appropriate On the second pipe edge 44 of the second pipe body 40, removal elements 15 with cutting teeth 16 and roller bodies 18 for working off soil material are also arranged.
  • the first tubular body 10 has at the upper end area, which is opposite the lower end area with the removal elements 15, a plate-shaped ceiling section 12, on which a connecting device 20 is provided for connection to a rotatingly driven drill rod.
  • the connecting device 20 has a first receiving sleeve 22 with a first receiving opening 23 which is square in cross section.
  • the first receiving sleeve 22 is connected in a manner known in principle to the tubular body 10 in a rotationally fixed manner via a plurality of stiffening plates 26.
  • the connecting device 20 in the illustrated embodiment is designed as a so-called Kelly box.
  • a Kelly box is a standard connection element, and a correspondingly angular connection element can be inserted into the angular first receiving opening 23 on a linkage.
  • a form-fitting connection can be established via locking bolts 28, of which only a single bolt 28 is shown.
  • a conveyor helix 19 is attached along the outside of the first tubular body 10 and extends from the lower end to the upper end.
  • FIG. 13 is a cross-sectional view of the first tubular body 10 of the core drilling tool 5 of FIGS Figures 1 and 2 shown.
  • the second tubular body 40 has been omitted.
  • the ceiling section 12 has a center hole, a coupling device 30 for releasably connecting the second tubular body 40 being arranged between the ceiling element 12 and the upper sleeve-like connecting device 20.
  • the coupling device 30 comprises a second receiving sleeve 32 which is provided with a second receiving opening 33.
  • the second receiving sleeve 32 is preferably designed in the same way as the first receiving sleeve 22 of the connecting device 20, the two receiving openings 23, 33 having a corresponding angular hole.
  • the two receiving sleeves 22, 32 are designed identically, but arranged opposite one another. The two receiving sleeves 22, 32 are welded to one another at their contact area.
  • the second receiving sleeve 32 is placed via a shoulder 36 on the center hole of the ceiling section 12, where a welding can also take place here.
  • the overall arrangement of the two receiving sleeves 22, 32 is additionally stabilized via the stiffening plates 26 and firmly connected to the ceiling section 12 and thus to the tubular body 10.
  • a rod-shaped plug element 60 is inserted into the second receiving opening 33 of the second receiving sleeve 32 from below.
  • the plug-in element 60 has an upper, first plug-in area 62 and a downwardly directed second plug-in area 64.
  • a central area 66 of larger diameter is arranged between the two plug-in areas 62, 64.
  • the two plug-in areas 62, 64 are designed to be identical and mirror-symmetrical to the central section 66.
  • Through-bores 68 are arranged in the plug-in regions 62, 64, which in the inserted position correspond to the corresponding through-openings 24 on the second receiving sleeve 32, for example. In this way, in the inserted position, a form-fitting and axially fixed connection can be achieved by inserting locking bolts 28.
  • Fig. 4 shows a core drilling tool 5 according to the invention in a cross-sectional view, the second tubular body 40 being detachably fastened within the first tubular body 10 via the coupling device 30 with the inserted plug-in element 60.
  • the second tubular body 40 similar to the structure of the first tubular body 10, has a plate-shaped ceiling section 42 which is welded to an upper end region of the second tubular body 40.
  • a third receiving sleeve 52 with a third receiving opening 53 is attached to this ceiling section 42 of the second tubular body 40 for coupling the second tubular body 40.
  • This third receiving sleeve 52 with the third receiving opening 53 is also designed as a Kelly box in the same way as the receiving sleeves described above.
  • the downwardly directed second plug-in area 64 of the plug-in element 60 is inserted into the upwardly directed third receiving opening 53 of the third receiving sleeve 52 and, as described above, axially locked in a form-fitting manner via at least one inserted locking bolt 28.
  • the central area 66 of the plug-in element 60 is designed in such a way that the central area 66 functions as a stop element. In this case, the central region 66 rests against the stop on both the upper, second receiving sleeve 32 and on the lower, third receiving sleeve 52.
  • the plug-in element 60 with the central region 66 is designed in such a way that the removal elements 15 of both the first tubular body 10 and the second tubular body 40 are at the same height.
  • Essentially planar machining can thus take place, with a cylindrical central drill core being formed within the second tubular body 40 and a second annular drilling core being formed in the annular space between the first tubular body 10 and the second tubular body 40.
  • the in the core drilling tool 5 according to Fig. 4 inserted plug element 60 is in Fig. 7 shown enlarged.
  • FIG Fig. 5 Another form of arrangement of the core drilling tool 5 according to the invention is shown in FIG Fig. 5 shown.
  • the second tubular body 40 protrudes from the first tubular body 10, so that the second tubular body 40 leads.
  • the second tubular body 40 can function as a type of centering, with a central drill core also being created.
  • the arrangement variant according to Fig. 5 is achieved by using a modified plug-in element 60 with an axially longer central section 66.
  • the first plug-in area 62 and the second plug-in area 64 are the same as the corresponding plug-in areas of the plug-in element 60 according to FIGS Figures 4 and 7th educated.
  • To achieve the configuration according to Fig. 5 is therefore only the plug element 60 compared to the arrangement of Fig. 4 switch.
  • the plug element 60, which in the arrangement according to Fig. 5 is used is more detailed in Fig. 8 shown.
  • FIG Fig. 6 Another alternative arrangement for a core drilling tool 5 according to the invention is shown in FIG Fig. 6 evident.
  • the inner, second tubular body 40 is set back in relation to the outer, first tubular body 10. This can also be desirable for certain soil conditions.
  • This arrangement can be achieved in a simple manner according to the invention in that a modified plug-in element 60 with an axially smaller central region 66 is used, as clearly shown in Fig. 9 is shown.
  • the first plug-in area 62 and the second plug-in area 64 of the plug-in element 60 can, as in the case of the other plug-in elements 60 according to FIGS Figures 7 and 8 be the same and with an angular design, in particular according to the standard of a Kelly box.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)

Claims (8)

  1. Outil de carottage pour le forage de terre ou de roche avec
    - un premier corps tubulaire (10) extérieur, au niveau du bord tubulaire (14) inférieur duquel des éléments de déblaiement (15) sont prévus pour le déblaiement de matériau de sol ou de roche et qui présente une section de plafond (12) supérieure,
    - un dispositif de liaison (20) qui est monté au niveau de la section de plafond (12) et est réalisé pour la transmission d'un couple de forage, et
    - au moins un deuxième corps tubulaire (40) intérieur, au niveau du bord tubulaire (14) inférieur duquel des éléments de déblaiement (15) sont prévus pour le déblaiement de matériau de sol ou de roche et qui est agencé à l'intérieur du premier corps tubulaire (10),
    - dans lequel un dispositif de couplage (30) est prévu au niveau du premier corps tubulaire (10), avec lequel le deuxième corps tubulaire (40) est fixé de manière amovible au premier corps tubulaire (10),
    caractérisé en ce
    que le dispositif de liaison (20) présente au niveau du premier corps tubulaire (10) une première douille de réception (22) avec une première ouverture de réception (23) dirigée vers le haut pour une liaison à complémentarité de formes,
    que le dispositif de couplage (30) présente une deuxième douille de réception (32) avec une deuxième ouverture de réception (33) dirigée vers le bas, et
    que le dispositif de couplage (30) présente un élément d'enfichage (60) avec une première zone d'enfichage (62) qui peut être enfichée dans la deuxième douille de réception (32).
  2. Outil de carottage selon la revendication 1,
    caractérisé en ce
    que les éléments de déblaiement (15) sont réalisés comme des dents de coupe fixes et/ou des corps de rouleau (18) logés de manière à pouvoir tourner.
  3. Outil de carottage selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce
    que le dispositif de couplage (30) est agencé au niveau d'un côté inférieur de la section de plafond (12).
  4. Outil de carottage selon l'une quelconque des revendications 1 à 3,
    caractérisé en ce
    que la première douille de réception (22) et la deuxième douille de réception (32) sont reliées l'une à l'autre ou réalisées d'un seul tenant.
  5. Outil de carottage selon l'une quelconque des revendications 1 à 4,
    caractérisé en ce
    qu'une troisième douille de réception (52) est prévue au niveau d'un côté supérieur du deuxième corps tubulaire (40) avec une troisième ouverture de réception (54) dirigée vers le haut.
  6. Outil de carottage selon l'une quelconque des revendications 1 à 5,
    caractérisé en ce
    qu'au moins une douille de réception (22, 32, 52) est réalisée comme un boîtier de Kelly.
  7. Outil de carottage selon l'une quelconque des revendications 5 ou 6, lorsqu'elle dépend de la revendication 5,
    caractérisé en ce
    que l'élément d'enfichage (60) présente une deuxième zone d'enfichage (64) qui est dirigée à l'opposé de la première zone d'enfichage (62) et est réalisée pour la liaison avec la troisième douille de réception (52).
  8. Outil de carottage selon l'une quelconque des revendications 1 à 7,
    caractérisé en ce
    que l'élément d'enfichage (60) peut être remplacé pour le réglage d'une position relative entre le premier corps tubulaire (10) et le deuxième corps tubulaire (40) par un élément d'enfichage (60) avec une longueur différente.
EP18153204.5A 2018-01-24 2018-01-24 Outil de carottage Active EP3517727B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18153204.5A EP3517727B1 (fr) 2018-01-24 2018-01-24 Outil de carottage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18153204.5A EP3517727B1 (fr) 2018-01-24 2018-01-24 Outil de carottage

Publications (2)

Publication Number Publication Date
EP3517727A1 EP3517727A1 (fr) 2019-07-31
EP3517727B1 true EP3517727B1 (fr) 2021-07-14

Family

ID=61024654

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18153204.5A Active EP3517727B1 (fr) 2018-01-24 2018-01-24 Outil de carottage

Country Status (1)

Country Link
EP (1) EP3517727B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202000014086A1 (it) * 2020-06-13 2021-12-13 Sip & T S P A Carotiere con tre teste concentriche di perforazione

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US797622A (en) * 1905-04-11 1905-08-22 William S Smith Core-drill.
NL140366B (nl) * 1947-05-12 Matsushita Electric Ind Co Ltd Stralingsbeeldomzetinrichting.
CN2906026Y (zh) * 2006-06-20 2007-05-30 洛阳市柯尔克工程机械有限公司 大口径桩孔用双筒硬岩取芯钻具
CN102011548A (zh) 2010-09-07 2011-04-13 李新桥 一种旋挖钻机三层嵌岩筒钻
CN102011549A (zh) 2010-09-07 2011-04-13 李新桥 一种旋挖钻机不取芯岩石筒钻
US9249631B2 (en) 2011-09-30 2016-02-02 Terex Usa, Llc Extendable pilot bit for barrel cutter
CN205012953U (zh) * 2015-09-07 2016-02-03 武汉卡特工业股份有限公司 一种旋挖钻机钻头
CN105735901A (zh) * 2016-05-06 2016-07-06 中铁大桥局集团第四工程有限公司 一种旋挖钻机的组合钻具

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