EP0283734B1 - Appareil de forage à percussion à tête de frappe mobile - Google Patents

Appareil de forage à percussion à tête de frappe mobile Download PDF

Info

Publication number
EP0283734B1
EP0283734B1 EP88102534A EP88102534A EP0283734B1 EP 0283734 B1 EP0283734 B1 EP 0283734B1 EP 88102534 A EP88102534 A EP 88102534A EP 88102534 A EP88102534 A EP 88102534A EP 0283734 B1 EP0283734 B1 EP 0283734B1
Authority
EP
European Patent Office
Prior art keywords
hammer head
drilling apparatus
percussion piston
piston
percussive 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.)
Expired - Lifetime
Application number
EP88102534A
Other languages
German (de)
English (en)
Other versions
EP0283734A3 (en
EP0283734A2 (fr
Inventor
Helmuth Römer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT88102534T priority Critical patent/ATE75523T1/de
Publication of EP0283734A2 publication Critical patent/EP0283734A2/fr
Publication of EP0283734A3 publication Critical patent/EP0283734A3/de
Application granted granted Critical
Publication of EP0283734B1 publication Critical patent/EP0283734B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E21B4/00—Drives for drilling, used in the borehole
    • E21B4/06—Down-hole impacting means, e.g. hammers
    • E21B4/14—Fluid operated hammers
    • E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole

Definitions

  • the invention relates to a ram boring machine with a pneumatically or hydraulically driven percussion piston movable reciprocally in a housing and an axially movable chisel arranged at the front end of the housing, which is acted upon directly or indirectly by the percussion piston.
  • Such ram boring machines are used to advance earth bores for cables and the like to be laid underground.
  • the chisel is used to smash and displace the soil.
  • the movable arrangement of the chisel offers the advantage that the impact energy of the percussion piston can initially be transferred specifically to the chisel, so that a higher shattering energy is available.
  • DE-PS 31 24 524 describes a ram boring machine in which the chisel is resiliently biased into a front end position in which it is not hit by the percussion piston. If the chisel has no or only one offers low resistance, the impact energy is therefore transmitted directly to the housing, and only when the chisel hits an obstacle and is pushed back into the housing, it is hit by the percussion piston, so that the obstacle is smashed. With this arrangement, damaging empty blows are avoided, but here too a part of the impact energy is consumed by the spring, since the housing must be accelerated against the spring force to the front when the chisel in the front end position hits an obstacle. In addition, in loose soil, where the housing is only slightly supported in the ground, there is a risk that the housing will be pushed back by the chisel and the pre-tensioned spring.
  • the invention has for its object to provide a ram boring machine of the type mentioned, in which lower energy losses occur when transmitting the impact energy to the chisel and in which the chisel can be transferred to a defined end position after the impact.
  • the pressure used to drive the percussion piston in the reverse direction is thus also used to reset the chisel. Since this pressure builds up only at the beginning of the backward stroke of the percussion piston, no corresponding counterpressure need be overcome during the forward stroke of the percussion piston, so that the impact energy can be transmitted to the chisel unabated.
  • the return piston is preferably arranged in a return chamber which receives the pneumatic or hydraulic pressure in such a way that it returns the chisel to its rearward end position.
  • the rear end face of the reset piston can also be pressurized, so that the chisel is pushed forward and is not acted upon by the percussion piston, as long as the soil provides only a slight resistance to the chisel.
  • the chisel does not have to be supported by a spring, the chisel can execute a rotational movement in relation to the housing.
  • the chisel tip is profiled in such a way that the chisel twists slightly when it penetrates into the ground. This improves the chipping behavior of the chisel and increases the directional stability of the ram boring machine.
  • the ram boring machine has a housing 1 provided with a chisel 14, which is closed off at the rear end by an end piece 15.
  • a front drive pressure chamber 5 is formed in the interior of the housing 1 by an impact piston 2 which is axially movable in the housing.
  • a rear drive pressure chamber 16 is located in a tubular portion 17 of the Percussion piston 2, which is slidable on a control sleeve 18.
  • a hose 19 supplies the ram boring machine with compressed air.
  • the tubular section 17 of the percussion piston 2 is provided with radial channels 20, and the end piece has axial air channels 21.
  • the radial channels 20 are temporarily closed by the control sleeve 18. As soon as these radial channels slide over the rear end of the control sleeve, the pressure in the front drive pressure chamber 5 can relax via the channels 22, 20 of the percussion piston and the axial air channels 21 of the end piece 15, so that the percussion piston through the in the rear drive pressure chamber 16 prevailing pressure is driven forward again. At the end of the forward stroke, the percussion piston 2 hits the rear end face 13 of the chisel 14 without braking so that the chisel is driven into the ground.
  • the part of the chisel 14 located within the housing 1 extends gas-tight through a front end wall 11 of the housing and a partition 23 which delimits the front drive pressure chamber 5.
  • the section of the chisel located between the end wall 11 and the partition 23 forms a reset piston 3, the front end surface of which is surrounded by a buffer element 24 and which delimits a reset chamber 6 with the peripheral wall and the front end wall of the housing.
  • the space between the reset piston 3 and the partition 23 is vented through a bore 8 in the housing 1.
  • the reset chamber 6 is connected to the front drive pressure chamber 5 via a radial bore 4 and an axial bore 4 ⁇ of the chisel.
  • the chisel acted upon by the percussion piston 2 moves only a relatively short distance in relation to the housing, so that the transverse bore 4 remains within the reset chamber 6.
  • the pressure prevailing during the backward stroke of the percussion piston 2 in the front drive pressure chamber 5 therefore spreads via the axial channel 4 ⁇ and the radial channel 4 into the reset chamber 6. Since the effective area of the reset piston 3 facing the reset chamber 6 is larger than the rear end face 13 of the chisel exposed to the front drive chamber 5, the chisel is pneumatically returned to the rear end position shown in FIGS the front end face 9 of the end wall 11 strikes.
  • the chisel can be driven further into the earth so that the percussion piston 2 strikes the rear end face 25 of the partition 23 with its front end. In this way, part of the impact energy is used to propel the housing.
  • the chisel is not hit by the percussion piston 2 in the front end position, so that the entire impact energy is available to propel the housing. Only when the chisel 14 again encounters greater resistance and is pushed back into the housing 1, does the transverse bore 4 again come into fluid communication with the reset chamber 6, so that the chisel is transferred back to the rear end position during the backward stroke of the percussion piston.

Landscapes

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

Claims (10)

  1. Appareil de forage à percussion équipé d'un piston de percussion (2) mû pneumatiquement ou hydrauliquement, mobile axialement en va-et-vient dans un carter (1) et d'un outil (14) mobile axialement à l'extrémité antérieure du carter, qui est frappé directement ou indirectement par le piston de percussion, caractérisé en ce que l'outil (14) est réuni à un piston de rappel (3), qui peut être alimenté par la pression pneumatique ou hydraulique lors de la course de retour du piston de percussion (2).
  2. Appareil de forage à percussion selon la revendication 1, caractérisé en ce qu'une chambre de rappel (6) disposée sur le côté antérieur du piston de rappel (3) se trouve en communication de fluide avec une chambre de pression d'entraînement (5) disposée sur le côté antérieur du piston de percussion (2).
  3. Appareil de forage à percussion selon la revendication 2, caractérisé par un dispositif de soupape (4, 11) en vue de l'interruption de la liaison de fluide entre la chambre de pression d'entraînement antérieure (5) et la chambre de rappel (6) en fonction de la position de l'outil (14).
  4. Appareil de forage à percussion selon l'une quelconque des revendications précédentes, caractérisé en ce que l'outil (14) est réalisé d'une seule pièce avec le piston de rappel (3) et, dans sa position arrière, pénètre à l'intérieur de la chambre de pression d'entraînement antérieure (5) et peut être frappé directement par le piston de percussion (2).
  5. Appareil de forage à percussion selon les revendications 2 et 4, caractérisé en ce qu'un canal (4'), en vue de la liaison de la chambre de pression d'entraînement antérieure (5) avec la chambre de rappel (6), s'étend à travers l'outil (14) et peut être obturé par l'extrémité antérieure du piston de percussion (2).
  6. Appareil de forage à percussion selon les revendications 3 et 5, caractérisé en ce qu'un alésage radial (4) de l'outil (14) relié au canal (4') est ouvert vers la chambre de rappel (6) dans la position arrière de l'outil et peut être obturé dans une position avancée de l'outil par une paroi frontale (11) du carter traversée par l'outil.
  7. Appareil de forage à percussion selon l'une des revendications 4 à 6, caractérisé en ce qu'une cloison (23) du carter (1) délimitant vers l'avant la chambre de pression d'entraînement antérieure (5) peut être frappée directement par le piston de percussion (2) après un déplacement vers l'avant approprié de l'outil (14).
  8. Appareil de forage à percussion selon les revendications 6 et 7, caractérisé en ce que l'alésage radial (4) est disposé de telle sorte que l'extrémité postérieure de l'outil (14) se trouve devant la surface frontale postérieure de la cloison (23) et ne peut pas être frappée par le piston de percussion, lorsque l'alésage radial (4) est obturé par la paroi frontale (11).
  9. Appareil de forage à percussion selon l'une des revendications 2 à 8, caractérisé par un élément tampon (24) disposé dans la chambre de rappel (6), en vue de l'amortissement du mouvement vers l'avant de l'outil et du piston de rappel, lors de l'atteinte de la position terminale antérieure.
  10. Appareil de forage à percussion selon l'une des revendications précédentes, caractérisé en ce que l'outil (14) peut tourner par rapport au carter (1) et est muni sur sa surface extérieure pénétrant dans le sol d'un profilage hélicoïdal.
EP88102534A 1987-03-27 1988-02-22 Appareil de forage à percussion à tête de frappe mobile Expired - Lifetime EP0283734B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88102534T ATE75523T1 (de) 1987-03-27 1988-02-22 Rammbohrgeraet mit beweglichem meissel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3710162A DE3710162C1 (de) 1987-03-27 1987-03-27 Rammbohrgeraet mit beweglichem Meissel
DE3710162 1987-03-27

Publications (3)

Publication Number Publication Date
EP0283734A2 EP0283734A2 (fr) 1988-09-28
EP0283734A3 EP0283734A3 (en) 1989-11-08
EP0283734B1 true EP0283734B1 (fr) 1992-04-29

Family

ID=6324148

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88102534A Expired - Lifetime EP0283734B1 (fr) 1987-03-27 1988-02-22 Appareil de forage à percussion à tête de frappe mobile

Country Status (4)

Country Link
US (1) US4886128A (fr)
EP (1) EP0283734B1 (fr)
AT (1) ATE75523T1 (fr)
DE (1) DE3710162C1 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5108400A (en) * 1988-01-21 1992-04-28 Aesculap Ag Striking tool for surgical instruments
DE3825800A1 (de) * 1988-07-29 1990-02-01 Schmidt Paul Rammbohrgeraet
DE3840923C2 (de) * 1988-12-05 1994-03-24 Schmidt Paul Rammbohrgerät
DE4003189A1 (de) * 1990-02-03 1991-08-08 Roemer Helmuth Rammvorrichtung
US5031706A (en) * 1990-02-07 1991-07-16 Mbs Advanced Engineering Systems Pneumopercussive soil penetrating machine
US5226487A (en) * 1990-02-07 1993-07-13 Mbs Advanced Engineering Systems Pneumopercussive machine
GB9110294D0 (en) * 1991-05-13 1991-07-03 Kayes Allan G Soil displacement hammer with movable head
EP0617926B1 (fr) * 1993-03-30 1998-08-05 Imt Integral Medizintechnik Ag Outil pneumatique à percusion
EP0838555A4 (fr) * 1995-07-06 1999-09-29 Komatsu Mfg Co Ltd Rouleau-compacteur hydraulique
US5816342A (en) * 1997-01-27 1998-10-06 Columbia Gas Distribution Companies Small diameter impact boring tool
RU2163280C1 (ru) * 1999-06-21 2001-02-20 Институт горного дела СО РАН Пневматическое ударное устройство
US6273201B1 (en) * 2000-02-16 2001-08-14 Earth Tool Company, L.L.C. Pneumatic ground piercing tool with movable chisel head
US6557652B2 (en) * 2000-05-18 2003-05-06 Guenter Klemm Method for performing ground or rock work and hydraulic percussion device
DE10146023B4 (de) * 2001-09-18 2006-02-23 Tracto-Technik Gmbh Steuerung für einen Schlagantrieb
US20060088384A1 (en) * 2004-10-22 2006-04-27 Putnam Samuel W Stored energy coupling and pipe bursting apparatus
US7066279B2 (en) * 2004-11-08 2006-06-27 Earth Tool Company, L.L.C. Pneumatic ground piercing tool
EP1883361B1 (fr) * 2005-05-17 2011-03-02 IMT Integral Medizintechnik AG Outil a percussion, en particulier pour application chirurgicale
US7681658B2 (en) 2007-11-06 2010-03-23 Maurice DUVAL Pneumatic impact tool
CA2665298C (fr) * 2008-05-03 2016-03-01 Earth Tool Company, Llc Outil a percussion pneumatique
WO2011000033A1 (fr) * 2009-06-29 2011-01-06 Maintenance Technique Pty Ltd Ensemble tête de forage
US8708061B2 (en) 2010-12-14 2014-04-29 Caterpillar Inc. Lower damper for demolition hammer
CN102392598B (zh) * 2011-09-24 2013-08-14 邵金安 液压振动冲击器及其构成的桩工动力头
US9115542B1 (en) * 2015-04-14 2015-08-25 GDD Associates, Trustee for Geo-diving device CRT Trust Geo-diving device
CN105240027B (zh) * 2015-10-30 2017-08-04 国网山东省电力公司东营供电公司 同轴反向式电缆隧洞钻进装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US520915A (en) * 1894-06-05 Direct-acting engine
US450782A (en) * 1891-04-21 Pneumatic tool holding and operating device
US1416086A (en) * 1920-11-12 1922-05-16 John T Scott Air hammer
US1665046A (en) * 1924-10-29 1928-04-03 Ralph H Tucker Pneumatic hammer
AT238665B (de) * 1962-01-12 1965-02-25 Johann Dipl Ing Mayer Setzgerät
US3266581A (en) * 1963-11-01 1966-08-16 Mechanical Res Corp Vibrationless power tool
DE2157259C3 (de) * 1971-11-18 1973-06-07 Tracto Technik Rammbohrgerät
SU794115A1 (ru) * 1972-12-07 1981-01-07 Институт Горного Дела Со Ан Ссср Пневматическое устройство ударногодЕйСТВи дл пРОХОдКи СКВАжиН ВгРуНТЕ
US4018291A (en) * 1974-12-23 1977-04-19 Allied Steel & Tractor Products, Incorporated Pneumatic hammer
DE2551303C3 (de) * 1975-11-14 1981-04-02 Institut gornogo dela Sibirskogo otdelenija Akademii Nauk SSSR, Novosibirsk Druckluftbetriebene Tiefloch-Schlagbohrmaschine
FI60153C (fi) * 1978-05-11 1981-12-10 Tampella Oy Ab Slaganordning
DE3124524C2 (de) * 1981-06-23 1985-08-01 Gustav Dr.-Ing. 4300 Essen Jenne Rammvorrichtung für selbstgetriebene pneumatische Rammbohrgeräte
DE8310178U1 (de) * 1982-10-08 1983-10-06 Markovic, Vladimir, 61113 Ljublijana Pneumatisches, selbstgetriebenes rammbohrgeraet
CH664730A5 (de) * 1983-07-21 1988-03-31 Sig Schweiz Industrieges Verfahren und vorrichtung zur daempfung des rueckpralles bei schlagwerkzeugen.

Also Published As

Publication number Publication date
DE3710162C1 (de) 1988-09-29
ATE75523T1 (de) 1992-05-15
EP0283734A3 (en) 1989-11-08
EP0283734A2 (fr) 1988-09-28
US4886128A (en) 1989-12-12

Similar Documents

Publication Publication Date Title
DE3710162C1 (de) Rammbohrgeraet mit beweglichem Meissel
DE3533995C2 (fr)
DE69635619T2 (de) Stossdämpfermechanismus für eine hydraulische hämmervorrichtung
DE2527595C2 (de) Umkehrbare Schlagvorrichtung zur Herstellung von Bohrlöchern durch Verdrängen und Verdichten von Erdreich
DE4227065C2 (de) Hydropneumatischer Hammer
DE2157259B1 (de) Rammbohrgerät
DE4134956C2 (fr)
DE2540838C2 (de) Elektropneumatischer Hammer
DE69417641T2 (de) Im-Loch-Bohrmaschine, betrieben mit einem Druckmedium
DE10112985A1 (de) Schlagbohrkopf
DE3840923C2 (de) Rammbohrgerät
DE19858519C2 (de) Pneumatisch umsteuerbares Rammbohrgerät
WO2002044511A1 (fr) Appareil pneumatique de forage de roches et procede pour mettre en marche cet appareil
DE2107510C3 (de) Hydraulisches Schlagwerkzeug
EP0805258B1 (fr) Mouton de forage réversible
DE4003189C2 (fr)
EP1157787B1 (fr) Procédé pour travailler le sol et des pierres et outil de percussion hydraulique
DE19725052C2 (de) Bohrgerät
DE69310033T2 (de) Bohrlochvorrichtung mit Mitteln zum Verhindern von Leerschlägen
DE3590888C2 (de) Stossvorrichtung
DE2738956B2 (de) Bohrgestänge-Vorspanneinrichtung für Drehschlagbohrmaschinen
EP0731248A1 (fr) Instrument de percussion
DE2053336A1 (de) Mittels eines elastischen Druck mediums antreibbarer Motor
DE69216607T2 (de) Bodenverdrängungshammer mit beweglichem kopf
CH686837A5 (de) Fluidbetaetigter Schlaghammer.

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH FR GB IT LI NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH FR GB IT LI NL

RHK1 Main classification (correction)

Ipc: E21B 4/14

17P Request for examination filed

Effective date: 19891125

17Q First examination report despatched

Effective date: 19910422

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

ITF It: translation for a ep patent filed
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH FR GB IT LI NL

REF Corresponds to:

Ref document number: 75523

Country of ref document: AT

Date of ref document: 19920515

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19950210

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19950216

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19950223

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19950227

Year of fee payment: 8

ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19950228

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19950301

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19960222

Ref country code: AT

Effective date: 19960222

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19960228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960229

Ref country code: CH

Effective date: 19960229

BERE Be: lapsed

Owner name: ROMER HELMUTH

Effective date: 19960228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19960901

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19960222

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19961031

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 19960901

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050222