EP0011287B1 - Down-the-hole drill for rock, earth or the like - Google Patents

Down-the-hole drill for rock, earth or the like Download PDF

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Publication number
EP0011287B1
EP0011287B1 EP79104495A EP79104495A EP0011287B1 EP 0011287 B1 EP0011287 B1 EP 0011287B1 EP 79104495 A EP79104495 A EP 79104495A EP 79104495 A EP79104495 A EP 79104495A EP 0011287 B1 EP0011287 B1 EP 0011287B1
Authority
EP
European Patent Office
Prior art keywords
hammer
rock
drilling
drill
rotary connection
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
Application number
EP79104495A
Other languages
German (de)
French (fr)
Other versions
EP0011287A1 (en
Inventor
Heinrich-Rudolf Dipl.-Ing. Hausherr
Friedheim Eckey
Herbert Dipl-Ing. Hausherr
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.)
Maschinenfabrik Rudolf Hausherr & Sohne & Co KG GmbH
Original Assignee
Maschinenfabrik Rudolf Hausherr & Sohne & Co KG 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 Maschinenfabrik Rudolf Hausherr & Sohne & Co KG GmbH filed Critical Maschinenfabrik Rudolf Hausherr & Sohne & Co KG GmbH
Priority to AT79104495T priority Critical patent/ATE5274T1/en
Publication of EP0011287A1 publication Critical patent/EP0011287A1/en
Application granted granted Critical
Publication of EP0011287B1 publication Critical patent/EP0011287B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • 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
    • B25D9/125—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure driven directly by liquid pressure working with pulses
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • E21B4/20—Drives for drilling, used in the borehole combined with surface drive
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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 sink hammer drilling device for rock, soil, etc., whose rotary drive located outside the borehole is connected by a rotary connection for pressure and flushing agent to a drill pipe, at the end of which a sink hammer is provided, the cylinder receiving the percussion piston both is connected to the rotary connection at its upper side and at its lower side area via pipes in the drill pipe.
  • the lowering hammer drilling has proven particularly effective, since the impact device works deepest in the borehole and only the rotary movement outside the borehole is generated by means of a rotary motor.
  • a drilling device is known, the drilling motor of which is connected to a drill rod by means of a rotating union, at the end of which a striking device with cylinder and piston is arranged.
  • the percussion piston is acted upon with the pressure medium of a pulse generator, which is arranged directly above the cylinder of the percussion device.
  • a drilling device with a percussion device for producing large-bore holes in which the percussion drilling device is arranged directly above the drill collar with the aid of a drill collar at the end of the drill pipe and the control means for the stroke sequence outside the borehole the rotary table of the drill pipe are provided.
  • the control means arranged outside the borehole consists of a spring-loaded, two-way slide valve which is switched into the operating medium lines and which is provided with a control roller which rolls on a cam disk attached to the drill pipe. The pulse sequence is thus controlled depending on the speed of the drill pipe.
  • the invention has for its object to improve a countersink drilling device of the type mentioned in such a way that the control of the pulse sequence, as is known per se, takes place outside the borehole, but regardless of the speed of the drill string.
  • this is achieved in that the impact piston is struck with pressure medium by means of a pulse generator which is connected via lines to the rotary connection and the stroke frequency of the sink hammer is adjustable to the pulse generator.
  • the pulse generator 9 which is driven by the motor 10, is connected to the rotary connection 2 via the lines 7, 8.
  • the pulse generator 9 is of a conventional type.
  • the supply lines to the pulse generator 9 are designated 11 and 12.
  • the line 13 is used to supply a flushing agent to the rotary connection 2 and via the drill pipe 3 to the drill bit 6.
  • the formation of the drill pipe 3 is such that a total of three lines are available within the drill pipe 3, namely a line for the detergent and the other two lines for the alternate supply and discharge of the hydraulic pressure medium on the top or bottom of the percussion piston Retracting hammer 4.
  • concentrically arranged tubes can be used, or else tube bundles of three tubes.

Description

Die Erfindung betrifft eine Versenkhammer-Bohrvorrichtung für Gestein, Erdreich- usw., deren außerhalb des Bohrloches befindlicher Drehantrieb durch einen Drehanschluß für Druck- und Spülmittel mit einem Bohrgestänge in Verbindung steht, an dessen Ende ein Versenkhammer vorgesehen ist, dessen den Schlagkolben aufnehmender Zylinder sowohl an seinem oberseitigen als auch an seinem unterseitigen Bereich über Rohre im Bohrgestänge an den Drehanschluß angeschlossen ist.The invention relates to a sink hammer drilling device for rock, soil, etc., whose rotary drive located outside the borehole is connected by a rotary connection for pressure and flushing agent to a drill pipe, at the end of which a sink hammer is provided, the cylinder receiving the percussion piston both is connected to the rotary connection at its upper side and at its lower side area via pipes in the drill pipe.

Auf dem Gebiet des drehend-schlagenden Bohrens hat sich das Versenkhammerbohren besonders bewährt, da das Schlaggerät im Bohrlochtiefsten arbeitet und nur die Drehbewegung außerhalb des Bohrloches mittels eines Drehmotors erzeugt wird.In the field of rotary-impact drilling, the lowering hammer drilling has proven particularly effective, since the impact device works deepest in the borehole and only the rotary movement outside the borehole is generated by means of a rotary motor.

Beim Versenkhammerbohren ist es bekannt, die Steuerung im Gehäuse des Schlaggerätes vorzusehen. Dies hat den Nachteil, daß sich bei ändernden Bohrbedingungen eine Steuerung nur über die Höhe des Andruckes möglich ist, was aber bei einer Verringerung des Andruckes zu einem erheblichen Leistungsabfall und bei einer Erhöhung zu einer Gefahr der Zerstörung der Bohrkrone führt. Die gleichen Nachteile ergeben sich auch beim Versenkhammerbohren mit einem hydraulisch beaufschlagten Schlaggerät, da dessen Steuerung sich ebenfalls im Schlaggerät befindet. Über ein Mehrfachgestänge ergibt sich zwar die Möglichkeit, Drucköl und Spülmittel getrennt zuzuführen, so daß eine hydraulische Beaufschlagung und damit eine höhere Leistung des Schlaggerätes erforderlich ist, nicht aber eine den jeweiligen Gegebenheiten angepaßte Steuerung der Schlagzahl des Schlaggerätes.When countersink hammer drilling, it is known to provide the control in the housing of the impact device. This has the disadvantage that, in the case of changing drilling conditions, control is only possible via the amount of the pressure, but this leads to a considerable drop in performance when the pressure is reduced and to an increase in the risk of the drill bit being destroyed. The same disadvantages also arise when drilling a hammer with a hydraulically operated impact device, since its control is also located in the impact device. A multiple linkage gives the possibility of supplying pressure oil and detergent separately, so that hydraulic loading and thus a higher performance of the impact device is required, but not a control of the impact rate of the impact device adapted to the respective circumstances.

Durch die DE-A-2 541 795, insbesondere Figur 5 und 6, ist eine Bohrvorrichtung bekannt, deren Bohrmotor durch eine Drehdurchführung mit einem Bohrgestänge verbunden ist, an dessen Ende ein Schlaggerät mit Zylinder und Kolben angeordnet ist. Die Beaufschlagung des Schlagkolbens erfolgt mit dem Druckmittel eines Impulsgenerators, der unmittelbar über dem Zylinder des Schlaggeräts angeordnet ist.From DE-A-2 541 795, in particular FIGS. 5 and 6, a drilling device is known, the drilling motor of which is connected to a drill rod by means of a rotating union, at the end of which a striking device with cylinder and piston is arranged. The percussion piston is acted upon with the pressure medium of a pulse generator, which is arranged directly above the cylinder of the percussion device.

Durch die DE-B-1 220 805 ist eine Bohreinrichtung mit einem Schlaggerät zum Herstellen von Großlochbohrungen bekannt, bei welcher die Schlagbohreinrichtung unter zur Hilfenahme einer Schwerstange am Ende des Bohrgestänges unmittelbar oberhalb der Schwerstange angeordnet ist und die Steuermittel für die Schlagfolge außerhalb des Bohrloches über dem Drehtisch des Bohrgestänges vorgesehen sind. Das außerhalb des Bohrloches angeordnete Steuermittel besteht aus einem abgefederten, in die Betriebsmittelleitungen eingeschalteten Zweiwegeschieber, der mit einer Steuerrolle versehen ist, die auf eine am Bohrgestänge befestigten Nockenscheibe abrollt. Die Steuerung der Impulsfolge erfolgt somit abhängig von der Drehzahl des Bohrgestänges.From DE-B-1 220 805 a drilling device with a percussion device for producing large-bore holes is known, in which the percussion drilling device is arranged directly above the drill collar with the aid of a drill collar at the end of the drill pipe and the control means for the stroke sequence outside the borehole the rotary table of the drill pipe are provided. The control means arranged outside the borehole consists of a spring-loaded, two-way slide valve which is switched into the operating medium lines and which is provided with a control roller which rolls on a cam disk attached to the drill pipe. The pulse sequence is thus controlled depending on the speed of the drill pipe.

Von diesem Stand der Technik ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Versenkhammer-Bohrvorrichtung der eingangs genannten Art dahingehend zu verbessern, daß die Steuerung der Impulsfolge, wie an sich bekannt, außerhalb des Bohrloches erfolgt, aber unabhängig von der Drehzahl des Bohrgestänges.Starting from this prior art, the invention has for its object to improve a countersink drilling device of the type mentioned in such a way that the control of the pulse sequence, as is known per se, takes place outside the borehole, but regardless of the speed of the drill string.

Gemäß der Erfindung wird dies dadurch erreicht, daß die Beaufschlagung des Schlagkolbens des Versenkhammers mit Druckmittel mittels eines Impulsgenerators erfolgt, welcher über Leitungen mit dem Drehanschluß verbunden ist und die Schlagfrequenz des Versenkhammers an den Impulsgenerator einstellbar ist.According to the invention, this is achieved in that the impact piston is struck with pressure medium by means of a pulse generator which is connected via lines to the rotary connection and the stroke frequency of the sink hammer is adjustable to the pulse generator.

Durch diese Ausgestaltung ist es möglich, bei unterschiedlichen Bohrbedingungen, wie sie z. B. durch Verschiedenartige Gesteinsschichten, Lehmeinschlüsse in hartem Gestein usw. gegeben sein können, über den Impulsgenerator die Schlagfrequenz des Versenkhammers zu verändern, so daß jeweils optimale Bedingungen erreicht werden können. Die Steuerung der Frequenz des Impulsgenerators kann in Abhängigkeit von Änderungen im Bohrfortschritt, vom anfallenden Bohrklein usw. selbsttätig oder von Hand erfolgen.With this configuration, it is possible with different drilling conditions, such as. B. can be given by different types of rock layers, clay inclusions in hard rock, etc., via the pulse generator to change the impact frequency of the sinking hammer so that optimal conditions can be achieved in each case. The frequency of the pulse generator can be controlled automatically or by hand, depending on changes in drilling progress, the drilling cuttings etc.

Ein Ausführungsbeispiel der Erfindung ist an Hand der Zeichnung näher erläutert, und zwar zeigt diese in schematischer Darstellung eine Ansicht der Bohrvorrichtung.An embodiment of the invention is explained in more detail with reference to the drawing, and this shows a view of the drilling device in a schematic representation.

Mit 1 ist der Drehantrieb bezeichnet, welcher durch den Drehanschluß 2 mit dem Bohrgestänge 3 in Antriebsverbindung steht. Am unteren Ende des Bohrgestänges 3 ist der Versenkhammer 4 angebracht, dessen nicht weiter dargestellter Schlagkolben auf den Schaft 5 der Bohrkrone 6 schlagend einwirkt.1 with the rotary drive is designated, which is in drive connection through the rotary connection 2 with the drill pipe 3. At the lower end of the drill pipe 3, the countersink hammer 4 is attached, the percussion piston (not shown) of which strikes the shaft 5 of the drill bit 6.

An den Drehanschluß 2 ist über die Leitungen 7, 8 der Impulsgenerator 9 angeschlossen, welcher von dem Motor 10 angetrieben ist. Der Impulsgenerator 9 ist herkömmlicher Bauart.The pulse generator 9, which is driven by the motor 10, is connected to the rotary connection 2 via the lines 7, 8. The pulse generator 9 is of a conventional type.

Die Zufuhrleitungen zum Impulsgenerator 9 sind mit 11 und 12 bezeichnet. Die Leitung 13 dient der Zufuhr eines Spülmittels zum Drehanschluß 2 und über das Bohrgestänge 3 zur Bohrkrone 6.The supply lines to the pulse generator 9 are designated 11 and 12. The line 13 is used to supply a flushing agent to the rotary connection 2 and via the drill pipe 3 to the drill bit 6.

Die Ausbildung des Bohrgestänges 3 ist derart, daß insbesamt drei Leitungen innerhalb des Bohrgestänges 3 zur Verfügung stehen, und zwar eine Leitung für das Spülmittel und die beiden anderen Leitungen für die wechselweise Zufuhr und Abfuhr des hydraulischen Druckmittels auf die Ober- oder Unterseite des Schlagkolbens des Versenkhammers 4. Zu diesem Zweck können konzentrisch angeordnete Rohre Verwendung finden, oder aber auch Rohrbündel aus drei Rohren.The formation of the drill pipe 3 is such that a total of three lines are available within the drill pipe 3, namely a line for the detergent and the other two lines for the alternate supply and discharge of the hydraulic pressure medium on the top or bottom of the percussion piston Retracting hammer 4. For this purpose, concentrically arranged tubes can be used, or else tube bundles of three tubes.

Es ist auch möglich, mit einem Bündel von zwei Rohren zu arbeiten, wobei die dritte Leitung von einem Ringraum gebildet ist, der zwischen den beiden Rohren und der Innenwandung der diese umgebenden Bohrstange besteht.It is also possible to work with a bundle of two pipes, the third line being formed by an annular space which is between the two tubes and the inner wall of the surrounding boring bar.

Claims (3)

1. Percussion drill device for rock, earth etc., the rotary drive (1) of which is located outside the borehole and is connceted through a rotary connection (2) for pressurised and flushing medium, to a drill rod (3), at the end of which there is provided a hammer (4), the cylinder of which containing the percussion piston is connected to the rotary connection (2) at its upper and also at its lower end through pipes in the drill rod (3), characterised in that pressurised medium is supplied to the percussion piston of the hammer (4) by means of an impulse generator (9) which is connected via lines (7, 8) to the rotary connection (2), and in that the striking frequency of the hammer (4) is adjustable at the impulse generator (9).
2. Device according to Claim 1, characterised in that a hydraulic pressurised medium is used to operate the hammer (4).
3. A device according to Claim 1 or 2, characterised in that the frequency of the impulse generator (9) is controlled automatically as a function of variations in drilling progress.
EP79104495A 1978-11-20 1979-11-14 Down-the-hole drill for rock, earth or the like Expired EP0011287B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79104495T ATE5274T1 (en) 1978-11-20 1979-11-14 PUNCHING HAMMER DRILLING JIG FOR ROCK, SOIL ETC.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2850225 1978-11-20
DE2850225A DE2850225C2 (en) 1978-11-20 1978-11-20 Device for producing holes in rock, soil and the like.

Publications (2)

Publication Number Publication Date
EP0011287A1 EP0011287A1 (en) 1980-05-28
EP0011287B1 true EP0011287B1 (en) 1983-11-09

Family

ID=6055114

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104495A Expired EP0011287B1 (en) 1978-11-20 1979-11-14 Down-the-hole drill for rock, earth or the like

Country Status (11)

Country Link
EP (1) EP0011287B1 (en)
JP (1) JPS55500996A (en)
AR (1) AR227142A1 (en)
AT (1) ATE5274T1 (en)
DE (1) DE2850225C2 (en)
ES (1) ES486155A1 (en)
MA (1) MA18647A1 (en)
NO (1) NO793740L (en)
OA (1) OA06683A (en)
WO (1) WO1980001091A1 (en)
ZA (1) ZA796215B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1052627A1 (en) * 1979-05-14 1983-11-07 Институт Горного Дела Со Ан Ссср Percussive machine
SE8205029L (en) * 1981-11-05 1983-05-06 Ingersoll Rand Co HYDRAULIC DRIVE FORM AND RETURN MACHINE
SE8403686L (en) * 1984-07-12 1986-01-13 Atlas Copco Ab WAY TO CONTROL THE DRILLING OF DEEP TALES AND DRIVE SYSTEM FOR A SINGLE DRILLING MACHINE
JP2729969B2 (en) * 1990-03-29 1998-03-18 株式会社高橋エンジニアリング Pile driver
CA2354994C (en) * 2001-01-09 2007-03-20 Bruno Walter Acoustic flow pulsing apparatus and method for drill string
US6910542B1 (en) 2001-01-09 2005-06-28 Lewal Drilling Ltd. Acoustic flow pulsing apparatus and method for drill string
GB2410051B (en) * 2001-01-09 2005-09-07 Lewal Drilling Ltd Pressure pulsing apparatus at surface and method for drilling

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220805B (en) * 1964-12-24 1966-07-14 Salzgitter Maschinen Ag Drilling device for producing large holes

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1891416A (en) * 1929-07-26 1932-12-20 Irving C Harris Well drilling machine
DE1132067B (en) * 1961-10-31 1962-06-28 W Herbold Dr Ing Ram drilling device operated with compressed air
US3507341A (en) * 1969-06-24 1970-04-21 Ion Basgan Process and system for rotary drilling with drilling fluid imposed sonic vibrations
DE2311814A1 (en) * 1973-03-09 1974-09-12 Rilco Maschf OSCILLATING HYDROSTATIC IMPACT DRIVE
DE2541795C2 (en) * 1975-09-19 1985-09-26 Helmut Dipl.-Ing. 6200 Wiesbaden Sieke Device for deep drilling
DE2642133A1 (en) * 1976-09-18 1978-03-23 Ruhrkohle Ag Rotary and impact borehole drill operating system - varies frequency and amplitude to reduce power loss and noise (BE 20.3.78)

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1220805B (en) * 1964-12-24 1966-07-14 Salzgitter Maschinen Ag Drilling device for producing large holes

Also Published As

Publication number Publication date
ES486155A1 (en) 1980-05-16
EP0011287A1 (en) 1980-05-28
NO793740L (en) 1980-05-21
ATE5274T1 (en) 1983-11-15
JPS55500996A (en) 1980-11-20
DE2850225C2 (en) 1983-12-22
DE2850225A1 (en) 1980-06-04
ZA796215B (en) 1981-09-30
AR227142A1 (en) 1982-09-30
MA18647A1 (en) 1980-07-01
OA06683A (en) 1982-05-31
WO1980001091A1 (en) 1980-05-29

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