EP0378045B1 - Marteau de forage hydraulique - Google Patents

Marteau de forage hydraulique Download PDF

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Publication number
EP0378045B1
EP0378045B1 EP89810844A EP89810844A EP0378045B1 EP 0378045 B1 EP0378045 B1 EP 0378045B1 EP 89810844 A EP89810844 A EP 89810844A EP 89810844 A EP89810844 A EP 89810844A EP 0378045 B1 EP0378045 B1 EP 0378045B1
Authority
EP
European Patent Office
Prior art keywords
drill
liquid
turbine rotor
drill according
piston
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.)
Expired - Lifetime
Application number
EP89810844A
Other languages
German (de)
English (en)
Other versions
EP0378045A1 (fr
Inventor
Wolfgang Dr. Wührer
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.)
Sulzer AG
Original Assignee
Gebrueder Sulzer 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 Gebrueder Sulzer AG filed Critical Gebrueder Sulzer AG
Priority to AT89810844T priority Critical patent/ATE84850T1/de
Publication of EP0378045A1 publication Critical patent/EP0378045A1/fr
Application granted granted Critical
Publication of EP0378045B1 publication Critical patent/EP0378045B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D11/00—Portable percussive tools with electromotor or other motor drive
    • B25D11/06—Means for driving the impulse member
    • B25D11/12—Means for driving the impulse member comprising a crank mechanism
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • 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
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/14—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor using liquids and gases, e.g. foams
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S173/00—Tool driving or impacting
    • Y10S173/04—Liquid operated

Definitions

  • the invention relates to a hydraulic hammer drill with a bear supported resiliently in the direction of impact, which is force-coupled on the one hand via spring elements and pistons with a connecting rod and a crank mechanism of a reduction gear and which on the other hand strikes an axially movable boring bar.
  • a hydraulic hammer drill with a bear supported resiliently in the direction of impact, which is force-coupled on the one hand via spring elements and pistons with a connecting rod and a crank mechanism of a reduction gear and which on the other hand strikes an axially movable boring bar.
  • a hammer has become known from FR-A-2 232 410.
  • Hydraulic hammer drills are used to drill mounting holes and blast holes in the rock.
  • a preferred area is mining.
  • the invention provides a remedy here. It has the task of doing this at large mining depths. Utilize cooling water supplied from the earth's surface in such a way that back pressure and the on-site cooling and rinsing water consumption are sufficient to drive a hammer drill.
  • a constant-pressure turbine wheel connected to the transmission is partially axially acted upon by at least one liquid jet, for which a collecting nozzle after it has been deflected at the outlet from the turbine wheel is installed, which sucks air and residual water out of the turbine housing as a mixing section and by operating the rotary hammer in such a way that, in a first process step, a turbine wheel is partially axially pressurized by at least one liquid jet, and that the energy obtained from the jet deflection acts as a power source for the Rotary and impact movement of a drill bit is used, that in a second process step ambient air is brought into the turbine housing under vacuum via a suction opening with a filter, that in a third process step the kinetic residual energy of the liquid jets deflected by the turbine wheel is used according to the injector principle Aspirating air and residual liquid from the turbine housing, bringing it to a lower speed by decelerating it and transporting it further at higher pressure,
  • a hydraulically driven hammer drill is shown, with a guide head 14a, 14b which is movable in the direction of impact in the housing 1 and which guides the impact movement of the bear 2a, 2b, by the bear 2a, 2b, until it hits the drill rod 15 rotating with the drill chuck 16 is clamped to the guide head 14a, 14b via the shock spring 3a, 3b and follows the movement of the guide head 14a, 14b.
  • the movement of the guide head 14a, 14b is indicated as a function of the time t in FIG. 1a.
  • the movement is generated by a turbine wheel 20 which is connected to a planetary gear 7, the planet carrier of which is mounted in the housing 1, 1a via roller bearings 10.
  • the planet carrier guides the planet gears with the bolt 9 and is itself designed as an eccentric 12, whereby it has counter masses to the eccentric mass, which equalize forces for the masses of the eccentric 12 and connecting rod 6 accelerated transversely to the direction of impact of the bear 2a, 2b.
  • the turbine wheel 20 is acted upon by a nozzle 24 with a liquid jet 25, the liquid jet 25 striking the blades 21 of the turbine wheel 20 with a tangential and an axial component and with a tangential, an axial and a radial component from the Buckets 21 emerges.
  • the exit angles have to be determined empirically in order for a collecting nozzle 26 with a kidney-shaped cross section to be attached in the jet direction to work according to the injector principle.
  • the exit jet is deformed from a rather round cross section to a slot cross section 27 in the base of the collecting nozzle 26, which the jet enriched with air completely fills.
  • the guide channel 28 can be designed as a cooling channel which dissipates heat from the hammer drill.
  • the turbine wheel 20 is axially opposed in the area of the blade roots and in the area of the blades 21 with a play of 0.3 mm, with the exception of the location of the entry and exit of the pressure jet 25 provided the housing wall 1 and 1b. Furthermore, the housing surrounds the turbine blades 21 radially in the angular range of the incident and exiting the pressure jet 25 with an intermediate wall 23 at a distance of 0.3 mm.
  • the inlet cross section of the collecting nozzle 26 overlaps the blades 21 in the region of the undercut blade feet and draws air through the gap and the bores 22 in the turbine wheel 20, which air enters the turbine housing 1b through a suction opening 19 with a filter.
  • the overpressure of the liquid-air mixture in the guide channel 28 is approximately 1.5 bar.
  • the excess amount of the mixture for flushing is discharged via an orifice in the lower part of the housing, so that an air cushion 29 forms in the upper part of the housing 30 between the bear 2a, 2b and the drill rod 15, which absorbs liquid for a short time in addition to the generally present air bubbles and the RAM has the effect without the pressure being unnecessarily displaced by the bear 2a, 2b increases.
  • the intermediate housing wall 30 and the intermediate housing part 1c form a pressure vessel which is open via the hollow boring bar 15. Static soft seals 17 and dynamic soft seals 18 with respect to the moving bodies ensure tightness. When the bear 2a, 2b strikes, the liquid forms a transmission resistance before the end faces of the bear and the boring bar 15 touch, which increases the length of the transmitted impulse and leads to a greater power transmission without the end faces being mechanically damaged.
  • Hitting the rotary hammer at idle i.e. without feed force on its suspension, is prevented by locking the opening of the feed line to the nozzle 24 via the presence or setting of a feed force, which results in savings in water consumption and protection of the mechanics.
  • the drilling operation is achieved and interrupted by setting the feed in and out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Bridges Or Land Bridges (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Lubricants (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)

Claims (15)

  1. Marteau perforateur hydraulique comprenant un mouton (2a, 2b) qui prend appui élastiquement dans la direction de la frappe, dont d'une part le couplage dynamique d'un train d'engrenage démultiplicateur (7) avec une bielle (6) et une transmission à manivelle est assuré par des éléments élastiques (3a, 3b, 4a, 4b) et un piston et qui d'autre part frappe une tige de forage (15) mobile axialement, caractérisé en ce qu'une roue de turbine (20) reliée au train d'engrenage (7) reçoit partiellement axialement au moins un jet de liquide (25) pour lequel un ajutage collecteur (26) est installé à la suite de sa déviation à la sortie de la roue (20) de la turbine, cet ajutage collecteur constituant un trajet mélangeur qui aspire l'air et l'eau résiduelle hors de la carcasse (1b) de la turbine.
  2. Marteau perforateur hydraulique selon la revendication 1, caractérisé en ce que le jet de liquide (25) présente à sa rencontre avec l'ailetage (21) une composante axiale de 40 à 20%, une composante tangentielle de 80 à 96% et une composante radiale qui est au maximum de 15%.
  3. Marteau perforateur hydraulique selon l'une des revendications 1 et 2, caractérisé en ce que la roue (20) de la turbine comporte dans son disque des trous (22) pour le passage de l'air.
  4. Marteau perforateur hydraulique selon l'une des revendications 1 à 3, caractérisé en ce que la roue (20) de la turbine est entourée axialement avec un jeu étroit par la carcasse dans la région des ailettes (21) et du pied des ailettes, sauf dans la région de l'arrivée et du départ du jet de liquide (25).
  5. Marteau perforateur hydraulique selon l'une des revendications 1 à 4, caractérisé en ce que les ailettes (21) de la roue (20) de la turbine sont entourées radialement avec un jeu étroit par une cloison intermédiaire (23) de l'enveloppe dans la région de l'arrivée et du départ du jet de liquide (25).
  6. Marteau perforateur hydraulique selon l'une des revendications 1 à 5, caractérisé en ce que l'ajutage collecteur (26) est situé avec peu de jeu sur le contour du côté de la sortie de la roue (20) de la turbine, sa section d'entrée est réniforme et il recouvre les différents lieux auxquels le jet correspondant sous pression (25) sort de la roue (20) de la turbine, les lieux de sortie, qui correspondent à la plage des vitesses normales de travail de la roue (20) de la turbine, étant pris en compte.
  7. Marteau perforateur hydraulique selon l'une des revendications 1 à 6, caractérisé en ce que l'ajutage collecteur (26) se rétrécit en une section (27) en forme de fente vers le milieu des jets sous pression émergeant de la roue (20) de la turbine, de manière que la section du jet sous pression soit déformée de façon qu'elle remplisse la section la plus étroite (27) de la fente au fond de l'ajutage collecteur (26) indépendamment du lieu de sortie de la roue (20) de la turbine.
  8. Marteau perforateur hydraulique selon l'une des revendications 1 à 7, caractérisé en ce que le bord d'entrée de l'ajutage collecteur (26) réceptionne juste encore le jet de liquide à la vitesse maximale de travail et en ce que, aux vitesses encore plus élevées de rotation, des pertes de poussée et des pertes dynamiques soient produites à la rencontre du jet de liquide avec le bord d'entrée de l'ajutage collecteur (26), ces pertes empêchant des excès inadmissibles de vitesse de rotation.
  9. Marteau perforateur hydraulique selon l'une des revendications 1 à 8, caractérisé en ce que l'ajutage collecteur (26) ou un canal de guidage (28) prolongeant ce dernier comporte dans le sens de passage une augmentation de section analogue à celle d'un diffuseur à la suite de la section la plus étroite en fente (27).
  10. Marteau perforateur hydraulique selon l'une des revendications 1 à 9, caractérisé en ce qu'un engrenage à planétaire (7) est utilisé pour la réduction de la vitesse de rotation de la turbine, son porte-satellites étant conformé en excentrique (12) de la transmission à manivelle et à bielle (6), ce porte-satellites comportant un équilibrage de masses pour les masses de l'excentrique (12) et de la bielle (6) qui sont accélérées perpendiculairement à la direction de poussée du mouton (2a, 2b).
  11. Marteau perforateur hydraulique selon l'une des revendications 1 à 10, caractérisé en ce que l'espace compris entre le mouton (2a, 2b) et le mandrin (16) de logement de la tige de forage (15) est étanchéifié par des parois d'enveloppe et des garnitures, à l'exception d'orifices d'arrivée et d'évacuation.
  12. Marteau perforateur hydraulique selon la revendication 11, caractérisé en ce que l'espace compris entre le mouton (2a, 2b) et le mandrin de logement (16) est ouvert en sac vers le haut au-dessus du flux de sortie vers la tige de forage (15) lorsque le marteau perforateur est en position de travail, un coussin d'air se formant de manière à former un accumulateur de travail dans ce sac.
  13. Marteau perforateur hydraulique selon l'une des revendications 1 à 11, caractérisé en ce que le liquide passant dans le canal de guidage (28) ou un excédent de liquide qui en est ultérieurement dérivé est également utilisé pour le refroidissement du marteau perforateur.
  14. Procédé d'actionnement du marteau perforateur hydraulique selon la revendication 1, caractérisé en ce que
       à une première phase du processus, une roue de turbine (20) est partiellement balayée, partiellement axialement, par au moins un jet de liquide (25) et en ce que l'énergie obtenue par la déviation du jet est utilisée en source d'énergie pour le mouvement de rotation et de frappe d'un trépan,
       à une seconde phase du processus, de l'air ambiant est introduit dans la carcasse (1b) en dépression de la turbine par un orifice d'aspiration (19) équipé d'un filtre,
       à une troisième phase du processus, l'énergie cinétique résiduelle des jets de liquide (25) déviés par la roue (20) de la turbine est utilisée pour aspirer l'air et le liquide résiduel hors de la carcasse (1b) de la turbine suivant le principe d'un injecteur, pour en abaisser la vitesse par freinage dans un diffuseur et pour assurer la suite de leur transport à pression supérieure,
       à une quatrième phase du processus, le mélange de liquide et d'air, qui est à une pression plusieurs fois supérieure à celle de l'atmosphère, est dirigé dans l'espace compris entre le mouton (2a, 2b) et la tige de forage (15),
       à une cinquième phase du processus, l'excédent du mélange de liquide et d'air est évacué à l'environnement,
       à une sixième phase du processus, un coussin élastique d'air (29) est formé à la partie supérieure de l'espace qui est délimité par le mouton (2a, 2b) et la tige de forage (15), ce coussin d'air absorbant brièvement une partie du liquide refoulé lors de la frappe du mouton (2a, 2b),
       et à une septième phase du processus, le mélange de liquide et d'air utilisé en fluide de refroidissement et de rinçage est dirigé par la tige creuse de forage (15) sur le trépan, du liquide se trouvant entre les surfaces extrêmes du mouton (2a, 2b) effectuant la frappe et de la tige de forage (15), la résistance de ce liquide augmentant notablement la longueur de l'impulsion transmise de poussée lors de la rencontre des surfaces et permettant une augmentation du transfert d'énergie sans occasionner des dégâts mécaniques des surfaces.
  15. Marteau perforateur hydraulique selon l'une des revendications 1 à 12, caractérisé en ce que le conduit d'arrivée de liquide à l'ajutage (24) n'est ouvert qu'en présence ou lors de l'établissement d'une force d'avance destinée au marteau perforateur.
EP89810844A 1989-01-11 1989-11-08 Marteau de forage hydraulique Expired - Lifetime EP0378045B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89810844T ATE84850T1 (de) 1989-01-11 1989-11-08 Hydraulischer bohrhammer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7489 1989-01-11
CH74/89 1989-01-11

Publications (2)

Publication Number Publication Date
EP0378045A1 EP0378045A1 (fr) 1990-07-18
EP0378045B1 true EP0378045B1 (fr) 1993-01-20

Family

ID=4178688

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89810844A Expired - Lifetime EP0378045B1 (fr) 1989-01-11 1989-11-08 Marteau de forage hydraulique

Country Status (9)

Country Link
US (1) US5117923A (fr)
EP (1) EP0378045B1 (fr)
JP (1) JPH02224983A (fr)
AT (1) ATE84850T1 (fr)
AU (1) AU638960B2 (fr)
CA (1) CA2007428C (fr)
DE (1) DE58903355D1 (fr)
FI (1) FI91098C (fr)
ZA (1) ZA899569B (fr)

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US5626199A (en) * 1995-07-05 1997-05-06 T.C. Service Company Pneumatic impact tool having improved vibration and noise attenuation
US5573075A (en) * 1995-07-05 1996-11-12 T.C. Service Company Pneumatic impact tool having improved vibration and noise attenuation
JP2000024958A (ja) * 1998-07-15 2000-01-25 Yamada Kikai Kogyo Kk 連続衝撃作業機
FR2785347B1 (fr) * 1998-11-03 2002-03-08 Andre Gonon Amortisseur des incidences dues aux chocs, par une liaison flottante entre les mecanismes de rotation et de percussion dans un perforateur roto percutant hydraulique
DE19933972A1 (de) * 1999-07-20 2001-01-25 Bosch Gmbh Robert Bohr- oder Schlaghammer
US20030056352A1 (en) * 2000-12-19 2003-03-27 Mclellan Dale C. Liner bolt removal tool
US7013986B2 (en) * 2003-05-12 2006-03-21 Nitto Kohki Co., Ltd. Impact tool
DE102004022623A1 (de) * 2004-05-07 2005-12-08 Robert Bosch Gmbh Handwerkzeugmaschine mit einem Schlagwerk
GB2429991A (en) * 2005-09-07 2007-03-14 Alan Barrows Water powered impulsive unit
DE102006061627A1 (de) * 2006-12-27 2008-07-10 Robert Bosch Gmbh Schlagwerk einer Elektrohandwerkzeugmaschine
SE537773C2 (sv) * 2012-02-17 2015-10-13 Tools Pc Ab Const Slaganordning innehållande en rekyldämpare
CN104033102B (zh) * 2014-05-29 2016-09-28 广西恒日科技股份有限公司 冲击式液压凿岩机
US10814468B2 (en) 2017-10-20 2020-10-27 Milwaukee Electric Tool Corporation Percussion tool
EP4349534A2 (fr) 2018-01-26 2024-04-10 Milwaukee Electric Tool Corporation Outil à percussion
US10808379B1 (en) * 2019-08-28 2020-10-20 Cciip Llc Roadway access hole drill and a method of microtrenching using the drill to open an access hole in the roadway
CN110513047B (zh) * 2019-08-30 2021-07-23 沧州格锐特钻头有限公司 一种自激发液击振动牙轮钻头
CN112781455B (zh) * 2021-01-29 2021-12-28 安徽雷鸣爆破工程有限责任公司 一种露天矿山开采用爆破凿岩设备及其工作方法

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Also Published As

Publication number Publication date
CA2007428A1 (fr) 1990-07-11
FI91098C (fi) 1994-05-10
DE58903355D1 (de) 1993-03-04
AU638960B2 (en) 1993-07-15
ZA899569B (en) 1990-09-26
US5117923A (en) 1992-06-02
FI900009A0 (fi) 1990-01-02
CA2007428C (fr) 1994-09-13
AU4783690A (en) 1990-07-19
ATE84850T1 (de) 1993-02-15
FI91098B (fi) 1994-01-31
JPH02224983A (ja) 1990-09-06
EP0378045A1 (fr) 1990-07-18
FI900009A (fi) 1990-07-12

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