EP4008877B1 - Bohrantriebsvorrichtung für ein erdbohrgerät - Google Patents

Bohrantriebsvorrichtung für ein erdbohrgerät Download PDF

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Publication number
EP4008877B1
EP4008877B1 EP20212287.5A EP20212287A EP4008877B1 EP 4008877 B1 EP4008877 B1 EP 4008877B1 EP 20212287 A EP20212287 A EP 20212287A EP 4008877 B1 EP4008877 B1 EP 4008877B1
Authority
EP
European Patent Office
Prior art keywords
spindle unit
drive device
spring
drill drive
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.)
Active
Application number
EP20212287.5A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP4008877A1 (de
EP4008877C0 (de
Inventor
Tobias Moscaritolo
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.)
Eurodrill GmbH
Original Assignee
Eurodrill 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
Priority to EP20212287.5A priority Critical patent/EP4008877B1/de
Application filed by Eurodrill GmbH filed Critical Eurodrill GmbH
Priority to HUE20212287A priority patent/HUE062539T2/hu
Priority to ES20212287T priority patent/ES2954753T3/es
Priority to PL20212287.5T priority patent/PL4008877T3/pl
Priority to HRP20231003TT priority patent/HRP20231003T1/hr
Priority to RS20230709A priority patent/RS64474B1/sr
Priority to CN202111458312.3A priority patent/CN114592792B/zh
Priority to JP2021196034A priority patent/JP7235843B2/ja
Priority to KR1020210170882A priority patent/KR102804607B1/ko
Priority to CA3141025A priority patent/CA3141025C/en
Priority to US17/544,519 priority patent/US11719045B2/en
Publication of EP4008877A1 publication Critical patent/EP4008877A1/de
Application granted granted Critical
Publication of EP4008877B1 publication Critical patent/EP4008877B1/de
Publication of EP4008877C0 publication Critical patent/EP4008877C0/de
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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
    • E21B6/04—Separate drives for percussion and rotation
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • 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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/003—Bearing, sealing, lubricating details
    • 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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Definitions

  • the invention relates to a drilling drive device for an earth drilling device with a spindle arrangement which has an inner spindle unit and an outer spindle unit which is mounted in an axially displaceable manner on the inner spindle unit and is floating between two spring devices, according to the preamble of claim 1.
  • Such drilling drive devices are known in particular in drilling devices for earth and rock drilling, in which a down-the-hole-hammer drilling unit is used as a drilling tool.
  • a down-the-hole-hammer drilling unit one or more axially driven percussion elements are provided, which additionally execute a percussive movement when the down-the-hole-hammer drilling unit is driven in rotation.
  • Such down-the-hole hammer drilling units can be used in particular to create a borehole in rock.
  • a down the hole hammer unit goes about from the EP 3 336 301 A1 out.
  • the further operation of the drive spindle is influenced by such a bearing.
  • a certain amount of axial play must also be provided in order to allow axial screwing in a drill string composed of several drill rods with threaded connections.
  • CN 85 100 828 A discloses a drilling drive device with a spindle unit arranged in a floating manner between two disk springs.
  • the invention is based on the object of specifying a drilling drive device which, on the one hand, enables efficient drilling operation and, on the other hand, a good protection of the drilling drive when using an axially percussive drilling tool.
  • the drilling drive device is characterized in that a first front spring device, which is arranged on one side of the drilling tool, comprises a combination of at least one spiral compression spring and a first plate spring arrangement, and that a second rear spring device, which faces away from the drilling tool side, has a second plate spring arrangement.
  • a basic idea of the invention is to provide a floating bearing between two spring prestressing devices between the outer spindle unit and the inner spindle unit.
  • a first front spring device which faces the side with the drilling tool
  • a second rear spring device which faces away from the drilling tool side
  • each have a disk spring arrangement.
  • the torque is preferably introduced via the outer spindle unit, so that, due to the lack of storage, shocks from the inner spindle unit cannot be transmitted to the outer spindle unit, or can only be transmitted in a greatly dampened manner. Conversely, torque can also be transmitted from a drilling drive first to the inner spindle unit, while the drilling tool is connected to the outer spindle unit directly or via a drill rod.
  • At least one spiral compression spring is arranged on the first front spring device in addition to the first disk spring arrangement.
  • the preferably relatively soft spiral compression spring allows it in particular, a slight relative displacement between the two spindle units, which is advantageous, for example, when screwing on drill rod elements with threaded connections. Overall, efficient drilling operation can be achieved with simultaneous good damping of impacts from the drilling tool on the drilling drive.
  • a preferred embodiment of the invention consists in the spiral compression spring of the first spring device being supported on the one hand on a radially outwardly directed first flange on the outside of the inner spindle unit and on the other hand on a support ring which is resiliently mounted on the outer spindle unit in an axially displaceable manner by the disk spring arrangement .
  • the flange may be integral with or attached to the inner spindle unit on the outside.
  • a further expedient embodiment of the drilling drive device according to the invention results from the fact that the second disc spring arrangement of the second rear spring device is supported on the one hand on a radially outwardly directed second flange of the inner spindle unit and on the other hand on the outer spindle unit. At least one of the radially outwardly directed flanges is detachably attached. Overall, this enables the spring arrangement to be easily assembled.
  • a torque transmission device in particular an axial splined shaft toothing, is arranged.
  • the torque transmission device is designed to transmit a torque from a drive wheel of a drilling drive to the spindle arrangement.
  • the torque transmission device can be formed on the inner spindle unit or the outer spindle unit.
  • the torque transmission device is preferably arranged between the front spring device and the rear spring device. This counteracts excessive loading of a drilling drive by axial impacts during drilling.
  • the disk spring arrangements can be of any design.
  • a particularly low-maintenance embodiment results from the fact that the first disk spring arrangement and/or the second disk spring arrangement are accommodated in a receiving pocket.
  • the receiving pocket can be formed in particular on one of the flanges.
  • the receiving pocket is in particular an annular receiving groove.
  • a connecting device for attaching a drill rod element is provided on a front side of the inner spindle unit.
  • a thread can be provided, to which a suitable threaded area of a drill rod element is screwed.
  • the spiral compression spring has a smaller spring constant and a greater spring deflection than that of the first disc spring arrangement.
  • the spiral compression spring can thus ensure a necessary axial play, which is desired for attaching drill rod elements.
  • the spring deflection of the spiral compression spring is equal to or greater than a thread length of a drill rod element to be attached with a connecting thread.
  • annular guide slot to be formed on the inner spindle unit, in which a sleeve-shaped guide projection of the outer spindle unit fits. This ensures a guided movement between the two spindle units.
  • the invention also includes a drilling device, in particular an earth drilling device, with at least one drilling drive, with an outer spindle unit of a drilling drive device according to the invention being driven by the drilling drive.
  • the drilling device can in particular be a pile drilling device, which is used to produce foundation piles in the ground. Any one can Drilling tools are used, such as an auger, an endless drill, a drilling bucket or the like.
  • a down-the-hole hammer unit is attached to a drill rod as a drilling tool, which can be driven in rotation by means of the drill drive device.
  • a down-the-hole-hammer unit is basically known from the prior art. This has a generally cylindrical base body, on the underside of which is directed towards the ground, one or more hammer elements are driven in an axially reversing manner.
  • the hammer elements can be driven axially in particular by supplying a pressure fluid, in particular compressed air.
  • the spindle arrangement and in particular the inner spindle unit can be tubular with an inner cavity through which corresponding lines can be routed.
  • a drilling drive device 10 which in the Figures 1 to 3 is shown is essentially composed of an inner spindle unit 20 with a tubular base body 22 with an inner channel 23 and a tubular outer spindle unit 40 which is coaxial to the inner spindle unit 20 and surrounds it.
  • a central torque transmission device 70 in a basically known manner via one or more drill drives 5, which are preferably hydraulically driven, a torque on the outer Spindle unit 40 and / or the inner spindle unit 20 transferred.
  • the inner spindle unit 20 extends through the ring-shaped torque transmission device 70 to the rear and, at its rear end facing away from a drilling tool, has a rotary feedthrough 12 for transmitting at least one fluid from a drilling device (not shown) into the inner channel 23 of the tubular inner spindle unit 20 on.
  • the rotary feedthrough 12 essentially has two main components, namely a rotor 14, which is non-rotatably connected to the inner spindle unit 20 and a stator 16 facing away from it to the rear, which is supported on a housing of the torque transmission device 70 via a torque arm 18.
  • the rotor 14 rotates relative to the stationary stator 16, to which a fluid line, such as for transferring a mud or drilling suspension, can be connected.
  • the outer spindle unit 40 rotates with the inner spindle unit 20, which is mounted so that it can be displaced axially relative to the outer spindle unit 40.
  • a radially outwardly directed first flange 24 is arranged on a front side of the inner spindle unit 20 directed toward a borehole, to which a drilling tool can be detachably fastened directly or indirectly via attached drill rod elements by means of a connecting device 25 .
  • the drilling tool can in particular be a down-the-hole hammer drilling unit which has one or more axially driven percussion elements.
  • the drilling drive device 10 is provided with a first spring device 50 and a second spring device 60, which are described in more detail below with reference to FIG figures 2 and 3 be described in more detail.
  • the first spring device 50 has two spring components, namely a spiral compression spring 52 and a first disc spring arrangement 54.
  • the spiral compression spring 52 which is coaxial to the drilling axis, is supported at the front on the first flange 24 on the tubular base body 22 of the inner spindle unit 20 and on the other hand on a support ring 30 .
  • the support ring 30 can have a first ring 31 and a second ring 32 .
  • the first ring 31 is slidably mounted on the outside of the inner spindle unit 20 and is resiliently supported relative to the outer spindle unit 40 by means of the coaxial first disk spring arrangement 54, with the first disk spring arrangement 54 exerting a first prestressing force F TF is exercised.
  • the first ring 31 is connected to the second ring 32 via a radially protruding stop, on which the other end of the spiral compression spring 52 is supported on a step-like shoulder, with a pretensioning force F DF acting on the first flange 24 and thus the first inner spindle unit 20 is exercised.
  • the spiral compression spring 52 enables a stroke H1 which is significantly larger than a stroke H2 of the first plate spring arrangement 54 .
  • the spiral compression spring 52 is preferably provided with a smaller spring constant than the first disk spring arrangement 54.
  • the stroke H1 can be designed in particular to compensate for the necessary thread travel or screwing travel when screwing on an additional drill rod element.
  • the stroke H2 of the first disc spring arrangement 54 is preferably used to dampen the axial shocks that can be exerted by the drilling tool.
  • the coaxial second spring device 60 has exclusively a second disc spring arrangement 64, which is supported on one side on a shoulder of the outer spindle unit 60 and on the other side on a second flange 28, which is detachably attached, in particular screwed, to the outside of the tubular base body 22 of the inner spindle unit 20 .
  • a second receiving pocket 66 is formed by means of a cover ring 42 on the outer spindle unit 40, in which the plate springs of the second plate spring arrangement 60 are arranged in a protected manner.
  • a prestressing force F TFZ can be transmitted from the outer spindle unit 40 to the inner spindle unit 20 via the second disc spring arrangement 60, which can also serve to dampen axial forces of a down-the-hole-hammer drilling unit.
  • the cover ring 42 keeps disc springs 60 in preload when the inner spindle unit 20 is displaced axially to the right.
  • annular guide slot 34 can be arranged on the outside of the tubular base body 22, in which a corresponding guide projection 44 of the outer spindle unit 40 engages.

Landscapes

  • 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)
EP20212287.5A 2020-12-07 2020-12-07 Bohrantriebsvorrichtung für ein erdbohrgerät Active EP4008877B1 (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
HUE20212287A HUE062539T2 (hu) 2020-12-07 2020-12-07 Fúrómeghajtás földfúró berendezéshez
ES20212287T ES2954753T3 (es) 2020-12-07 2020-12-07 Dispositivo de accionamiento de perforación para un equipo de perforación de suelo
PL20212287.5T PL4008877T3 (pl) 2020-12-07 2020-12-07 Wiertnicze urządzenie napędowe dla urządzenia do wiercenia w ziemi
HRP20231003TT HRP20231003T1 (hr) 2020-12-07 2020-12-07 Pogonski uređaj bušilice i naprava za bušenje tla
RS20230709A RS64474B1 (sr) 2020-12-07 2020-12-07 Pogonski uređaj za bušenje za bušilicu za bušenje zemlje
EP20212287.5A EP4008877B1 (de) 2020-12-07 2020-12-07 Bohrantriebsvorrichtung für ein erdbohrgerät
CN202111458312.3A CN114592792B (zh) 2020-12-07 2021-12-02 用于土地钻孔设备的钻孔驱动装置
JP2021196034A JP7235843B2 (ja) 2020-12-07 2021-12-02 地中ドリリング装置用ドリル駆動装置
KR1020210170882A KR102804607B1 (ko) 2020-12-07 2021-12-02 토공 장치용 드릴 구동 장치
CA3141025A CA3141025C (en) 2020-12-07 2021-12-03 Drill drive device for an earth drilling apparatus
US17/544,519 US11719045B2 (en) 2020-12-07 2021-12-07 Drill drive device for an earth drilling apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20212287.5A EP4008877B1 (de) 2020-12-07 2020-12-07 Bohrantriebsvorrichtung für ein erdbohrgerät

Publications (3)

Publication Number Publication Date
EP4008877A1 EP4008877A1 (de) 2022-06-08
EP4008877B1 true EP4008877B1 (de) 2023-06-07
EP4008877C0 EP4008877C0 (de) 2023-06-07

Family

ID=73740332

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20212287.5A Active EP4008877B1 (de) 2020-12-07 2020-12-07 Bohrantriebsvorrichtung für ein erdbohrgerät

Country Status (11)

Country Link
US (1) US11719045B2 (pl)
EP (1) EP4008877B1 (pl)
JP (1) JP7235843B2 (pl)
KR (1) KR102804607B1 (pl)
CN (1) CN114592792B (pl)
CA (1) CA3141025C (pl)
ES (1) ES2954753T3 (pl)
HR (1) HRP20231003T1 (pl)
HU (1) HUE062539T2 (pl)
PL (1) PL4008877T3 (pl)
RS (1) RS64474B1 (pl)

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US3160217A (en) * 1962-11-30 1964-12-08 Richard R Raihle Mechanical hammer
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FI66460C (fi) * 1982-10-08 1984-10-10 Tampella Oy Ab Tryckmediedriven slagapparat
CN85100828B (zh) * 1985-04-01 1987-10-07 华中工学院 一种汽车装载式地质钻机
JPH1037645A (ja) * 1996-07-30 1998-02-10 Koken Boring Mach Co Ltd ロータリーパーカッションドリルのドリルヘッド
DE10237407B4 (de) * 2002-08-16 2009-12-10 Eurodrill Gmbh Hydraulischer Schlaghammer mit Leerschlagabschaltung
JP4479987B2 (ja) * 2003-06-30 2010-06-09 株式会社扶桑工業 打撃力発生装置
JP2005133381A (ja) * 2003-10-29 2005-05-26 Koken Boring Mach Co Ltd 地盤さく孔装置
US7137458B2 (en) * 2004-11-12 2006-11-21 The Hong Kong Polytechnic University Impact mechanism for a hammer drill
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FI123185B (fi) * 2011-04-15 2012-12-14 Sandvik Mining & Constr Oy Pyöritysyksikkö, kallionporausyksikkö ja menetelmä kallionporaukseen
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EP3336301B1 (de) 2016-12-19 2023-09-13 BAUER Maschinen GmbH Drehbohrwerkzeug und verfahren zum erstellen einer bohrung
ES2814626T3 (es) * 2018-02-13 2021-03-29 Eurodrill Gmbh Dispositivo de perforación para la perforación de tierra o roca así como procedimiento para el reequipamiento de un dispositivo de perforación de este tipo
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Also Published As

Publication number Publication date
JP7235843B2 (ja) 2023-03-08
JP2022090631A (ja) 2022-06-17
US11719045B2 (en) 2023-08-08
KR20220080712A (ko) 2022-06-14
CA3141025C (en) 2026-04-07
EP4008877A1 (de) 2022-06-08
HRP20231003T1 (hr) 2023-12-08
HUE062539T2 (hu) 2023-11-28
CN114592792B (zh) 2025-06-17
CN114592792A (zh) 2022-06-07
RS64474B1 (sr) 2023-09-29
ES2954753T3 (es) 2023-11-24
EP4008877C0 (de) 2023-06-07
KR102804607B1 (ko) 2025-05-08
US20220178204A1 (en) 2022-06-09
PL4008877T3 (pl) 2023-09-11
CA3141025A1 (en) 2022-06-07

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