EP0388627B1 - Marteau-pilon - Google Patents

Marteau-pilon Download PDF

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Publication number
EP0388627B1
EP0388627B1 EP90102658A EP90102658A EP0388627B1 EP 0388627 B1 EP0388627 B1 EP 0388627B1 EP 90102658 A EP90102658 A EP 90102658A EP 90102658 A EP90102658 A EP 90102658A EP 0388627 B1 EP0388627 B1 EP 0388627B1
Authority
EP
European Patent Office
Prior art keywords
boring machine
ram boring
control sleeve
section
sleeve
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
EP90102658A
Other languages
German (de)
English (en)
Other versions
EP0388627A1 (fr
Inventor
Paul Dipl.-Ing. Schmidt
Alfons Dipl.-Ing. Hesse
Gerhard Balve
Franz-Josef Püttmann
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6377043&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0388627(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of EP0388627A1 publication Critical patent/EP0388627A1/fr
Application granted granted Critical
Publication of EP0388627B1 publication Critical patent/EP0388627B1/fr
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
    • 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 an impact piston which is axially displaceable in a housing, the forward and backward movement of which is controlled by an axially loaded control sleeve which engages in a cylinder space of the impact piston and is connected to a supply hose by means of a guide tube, and one or more corresponding control openings in the impact piston.
  • the guide tube being axially displaceably guided between two stops arranged in a guide sleeve arranged at the rear end of the housing.
  • the control sleeve penetrates a guide member fixed to the housing, and stops of the guide member and the control sleeve ensure an axial locking during operation.
  • the control sleeve has a rotationally releasable locking device from the outside, whereby by turning the control sleeve the stop or stops of the guide member or the control sleeve are brought into an axially aligned position with one or more longitudinal recesses of the control sleeve or guide member, so that the control sleeve can be axially displaced .
  • it is first necessary to release the rotation lock for example by pulling on a rope that is carried along, and then to turn the control sleeve in a targeted manner with respect to the guide member, then to move it and finally to lock it again.
  • control sleeve can only be unlocked or locked with difficulty by rotating the supply hose by means of the cable-operated rotary lock, especially if the earth hole is already very deep.
  • the invention has for its object to improve a ram boring machine of the type mentioned in such a way that a reversal under pressure is possible without remote locking.
  • control sleeve is precisely defined in the locked and unlocked state.
  • control sleeve which is rotatably limited in the guide sleeve, is rotated by the supply hose by a certain radian measure from one turning stop to the other turning stop and thereby unlocked in the axial direction.
  • a cylindrical helical spring acting on the control sleeve is arranged in a rotationally fixed manner between the control sleeve and the guide sleeve under torsional prestress.
  • the cylindrical helical spring which is fixed with its ends in the control sleeve and in the guide sleeve under torsional pretension, both the axial pretension and the torsional pretension of the control sleeve can be ensured.
  • the axial preload by the spring is dimensioned so that the control sleeve overcomes the spring preload when the pressure is fully applied and moves the control sleeve backwards. After the control sleeve has hit the axial stop preventing further displacement, the spring under torsional pretension rotates the control sleeve back into the locking position, which is defined by a corresponding rotary stop.
  • the effective pressure is reduced until the axial spring preload is greater than the pressure acting on the control sleeve in the opposite direction.
  • the control sleeve can thus be moved into the front position by rotating the supply hose and there again into the locking position by the torsional pretension of the spring to be brought. Then the pressure can be increased again.
  • Another advantage is that the air pressure in the ram boring machine when reversing from reverse to forward running is always so high that water and dirt can be prevented from entering through the exhaust air openings in the ram boring machine, as is the case when the ram boring machine is at a standstill.
  • the control sleeve can advantageously be connected to the supply hose via a guide tube having two spaced-apart circumferential grooves that form the axial stops and a pipe section with a non-circular cross section, and an opening with a cross section that is complementary to the non-round cross section of the pipe section.
  • An elastic bushing is advantageously arranged between the control sleeve and the guide tube. It can be achieved that the control sleeve, even in the event of manufacturing inaccuracies, slides centrally and without jamming in the cylinder space of the percussion piston.
  • the rotary stops are preferably formed by projections arranged in the circumferential grooves and interacting with the non-circular opening in the guide sleeve.
  • the non-circular cross section of the tube section can be formed by at least one flattening of the circular cross section.
  • the projections can advantageously be formed by at least one circular-arc-shaped section with a radius extending to the flattening and at least two straight surfaces extending tangentially from the circular-arc-shaped section to the radius of the pipe section at a distance from one another.
  • a preferred embodiment is one in which the non-circular cross section of the tube section is formed by two parallel flats and by two projections with diametrically opposite circular arc sections and tangential, straight surfaces adjoining them at an angle of approximately 90 °.
  • it is sufficient to turn the supply hose and thus the control sleeve by 90 ° in order to unlock and axially shift the guide sleeve.
  • the axial preload and the torsional preload of the cylindrical coil spring arranged between the control sleeve and the guide sleeve can be set particularly easily if the ends of the cylindrical coil spring are bent axially according to the invention and engage in pockets in the control sleeve and in the guide sleeve.
  • a plurality of circumferentially distributed pockets can be arranged in the control sleeve and in the guide sleeve, so that the end of the cylindrical helical spring can be inserted into different pockets and the torsional pretension can thereby be changed.
  • the coil spring which is preferably designed as a coil spring, can be wound in such a way that its diameter decreases with increasing torsional preload.
  • FIGS. 1 and 2 Only the rear part of a ram boring machine is shown in FIGS. 1 and 2.
  • the ram boring machine consists of a housing 1 in which a percussion piston 8 moves back and forth. When rushing forward, the head of the percussion piston 8 hits a pin of a percussion tip projecting into the housing 1.
  • a control sleeve 3 is arranged in a sealed manner in a cylinder space 9 of the percussion piston 8.
  • the control sleeve 3 is connected via an elastic bushing 4 to a guide tube 2, which in turn is supported in a guide sleeve 5.
  • the guide sleeve 5 is screwed via a connection 25 to the rear end of the housing 1 and surrounded by a ventilation block 6, via which the compressed air used for pressurization escapes to the outside when the percussion piston 8 has moved back so far over the control sleeve 3 and its control openings 11 behind the control edges of the control sleeve 3 have reached.
  • a supply hose 10, via which compressed air is supplied, is connected to the guide tube 2 in a pressure-tight and rotationally fixed manner.
  • a cylindrical coil spring 7 is arranged between the control sleeve 3 and the guide sleeve 5 and is under axial and torsional prestress.
  • the ends 12 of the coil spring 7 are bent axially and fixed in pockets 13 of both the control sleeve 3 and the guide sleeve 5 against rotation.
  • circumferential grooves acting as stops 14 are arranged at a distance from one another. Between these circumferential grooves 14 there is a tube section 15 of the guide tube 2, which has two parallel flats 17. A recess 16 which is complementary to the cross section of the tube section 15 is arranged in the guide sleeve 5 surrounding the tube section 15.
  • the guide tube 2 can be axially displaced in the guide sleeve 5 when the tube section 15 with its flats 17 is aligned with the recess 16 accordingly.
  • the guide tube 2 can be rotated by 90 ° in the circumferential grooves 14 between two rotary stops 18 designed as projections.
  • the rotation stops (projections) 18 are diametrically opposed arcuate sections 19 and adjoining tangential, straight surfaces 20 are formed, which extend at an angle of 90 ° to each other. These tangential, straight surfaces 20 bear against the inner surfaces of webs 22 of the recess 16; they allow the guide tube 2 to be rotated through 90 ° in the guide sleeve 5.
  • the guide tube 2 Due to the torsional preload of the cylindrical coil spring 7, the guide tube 2 is rotated into a position in which the tube section 15 is rotated by 90 ° to the recess 16 and abuts the webs 22. An axial displacement of the guide tube 2 with the control sleeve 3 is not possible in this position.
  • the guide tube 2 with the control sleeve 3 is in the position shown in FIG. 1, in which the full pressure of the pressure medium supplied via the supply hose 10 reaches the cylinder space 9 through the bore 21 in the guide tube 2, acts on the front surface of the control sleeve 3 a pressure overcoming the pretension of the cylindrical coil spring 7, and the control sleeve 3 with the guide tube 2 is moved back into the position shown in FIG. 2.

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)

Claims (10)

  1. Marteau-pilon comprenant un piston de frappe (8) mobile axialement dans un boîtier (1), dont le déplacement d'avance et de recul est commandé par une chemise de commande (3) qui pénètre dans une cavité cylindrique (9) du piston de frappe (8), qui est raccordée à un tuyau d'alimentation (10) au moyen d'un tube de guidage (2) et repoussée axialement, et au moyen d'une ou plusieurs ouvertures de commande (11) correspondantes dans le piston de frappe, le tube de guidage (2) étant guidé en déplacement axial entre deux butées (14, 15) situées dans une douille de guidage (5) agencée à l'extrémité arrière du boîtier, caractérisé en ce que la chemise de commande rotative (3) est repoussée tant qu'axialement qu'en rotation, et en ce que le tube de guidage (2) présente des butées de rotation additionnelles (18) pour le verrouillage et le déverrouillage par rapport à la douille de guidage (5) en direction axiale.
  2. Marteau-pilon selon la revendication 1, caractérisé en ce qu'un ressort hélicoïdal (7) cylindrique qui repousse la chemise de commande (3) est agencé solidairement en rotation et sous précontrainte de torsion entre la chemise de commande (3) et la douille de guidage (5).
  3. Marteau-pilon selon l'une ou l'autre des revendications 1 et 2, caractérisé en ce que la chemise de commande (3) est reliée au tuyau d'alimentation (10) au moyen d'un tube de guidage (2) qui comporte deux gorges périphériques (14) agencées à distance l'une de l'autre et constituant les butées axiales, et un tronçon de tube (15) dont la section n'est pas circulaire, et en ce que la douille de guidage (5) comporte une ouverture (16) avec une section complémentaire de la section non circulaire du tronçon de tube (15).
  4. Marteau-pilon selon l'une ou plusieurs des revendications 1 à 3, caractérisé en ce qu'il comprend un manchon élastique (4) agencé entre le tube de guidage (2) et la chemise de commande (3).
  5. Marteau-pilon selon l'une quelconque des revendications 1 à 4, caractérisé en ce que des saillies (18) qui coopèrent avec l'ouverture (16) non circulaire dans la douille de guidage (5) sont agencées dans les gorges périphériques (14).
  6. Marteau-pilon selon la revendication 3, caractérisée en ce que la section non circulaire de tronçon de tube (15) est formée par au moins un méplat (17) de la section circulaire.
  7. Marteau-pilon selon les revendications 5 et 6, caractérisé en ce que les saillies (18) sont formées par au moins une section (19) en forme d'arc de cercle, avec un rayon qui va jusqu'au méplat (17), et au moins deux surfaces (20) droites qui s'étendent à distance l'une de l'autre et tangentiellement depuis le tronçon (19) en forme d'arc de cercle jusqu'au rayon du tronçon de tube (15).
  8. Marteau-pilon selon la revendication 7, caractérisé en ce que la section non circulaire du tronçon de tube (15) est constituée par deux méplats parallèles (17) et par deux saillies (18) avec des sections (19) diamétralement opposées en forme d'arcs de cercle et des surfaces droites (20) tangentielles qui se raccordent aux sections (19) sous un angle d'environ 90°.
  9. Marteau-pilon selon l'une ou plusieurs des revendications 2 à 8, caractérisé en ce que les extrémités (12) du ressort hélicoïdal cylindrique (7) sont repliées axialement et pénètrent dans des poches (13) de la chemise de commande (3) et de la douille de guidage (5).
  10. Marteau-pilon selon l'une ou plusieurs des revendications de 1 à 9, caractérisé en ce que le ressort hélicoïdal cylindrique (7) est réalisé sous la forme d'un ressort bobiné.
EP90102658A 1989-03-23 1990-02-12 Marteau-pilon Expired - Lifetime EP0388627B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3909567A DE3909567A1 (de) 1989-03-23 1989-03-23 Rammbohrgeraet
DE3909567 1989-03-23

Publications (2)

Publication Number Publication Date
EP0388627A1 EP0388627A1 (fr) 1990-09-26
EP0388627B1 true EP0388627B1 (fr) 1994-04-06

Family

ID=6377043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90102658A Expired - Lifetime EP0388627B1 (fr) 1989-03-23 1990-02-12 Marteau-pilon

Country Status (4)

Country Link
US (1) US5148878A (fr)
EP (1) EP0388627B1 (fr)
JP (1) JP2672387B2 (fr)
DE (1) DE3909567A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4109215A1 (de) * 1991-03-21 1992-09-24 Tracto Technik Rammbohrgeraet
NO301727B1 (no) * 1993-02-10 1997-12-01 Gefro Oilfield Services As Dobbeltvirkende hydraulisk slagverktöy
DE19652530C2 (de) * 1996-12-17 1998-12-03 Terra Ag Tiefbautechnik Imlochhammer
CA2194079C (fr) * 1996-12-19 2005-11-29 Murray P. Craigmile Methode et appareil pour realiser un trou de forage directionnel et mettre en place des tiges de forage
DE19858519C2 (de) * 1998-12-18 2002-08-29 Tracto Technik Pneumatisch umsteuerbares Rammbohrgerät
DE10034471B4 (de) * 2000-07-15 2009-08-13 Tracto-Technik Gmbh Spezialmaschinen Rammbohrgerät
DE10146023B4 (de) * 2001-09-18 2006-02-23 Tracto-Technik Gmbh Steuerung für einen Schlagantrieb
US7836976B2 (en) * 2005-10-20 2010-11-23 Allied Construction Products, L.L.C. Underground piercing tool
AU2006314836B2 (en) 2005-11-16 2010-09-30 Tracto-Technik Gmbh Hammer drilling device with a pneumatic reversing gear
DE102005055032B4 (de) * 2005-11-16 2011-04-21 Tracto-Technik Gmbh Rammbohrgerät mit pneumatischer Umsteuerung
EP1989392A1 (fr) * 2006-02-14 2008-11-12 R D Sankey Engineering Limited Foreuse a mouton de forage pneumatique et reversible
US7681658B2 (en) 2007-11-06 2010-03-23 Maurice DUVAL Pneumatic impact tool
DE102009038383B4 (de) 2009-08-24 2014-10-16 Tracto-Technik Gmbh & Co. Kg Rammbohrvorrichtung
DE102009038385B4 (de) 2009-08-24 2014-05-28 Tracto-Technik Gmbh & Co. Kg Rammbohrvorrichtung mit einem pneumatischen Antrieb und einer hydraulischen Umsteuerung der Bewegungsrichtung
DE102014011403A1 (de) 2014-08-06 2016-02-11 Tracto-Technik Gmbh & Co. Kg Rammbohrgerät
DE102015008339A1 (de) * 2015-07-01 2017-01-05 Tracto-Technik Gmbh & Co. Kg "Rammbohrvorrichtung und Verfahren zum Umsteuern einer Rammbohrvorrichtung"

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2340751C2 (de) * 1973-08-11 1974-09-26 Tracto-Technik Paul Schmidt, 5940 Lennestadt Steuervorrichtung für den Vor- und Rücklauf von Rammbohrgeräten
DE2537176B1 (de) * 1975-08-21 1976-12-09 Jenne & Strahm Ag Steuervorrichtung fuer den vor- und ruecklauf von selbstgetriebenen pneumatischen rammbohrgeraeten
SU652279A1 (ru) * 1975-10-01 1979-03-15 Институт Горного Дела Со Ан Ссср Устройство ударного действи дл образовани скважин в грунте
DE2820785C2 (de) * 1978-05-12 1986-10-02 Paul 5940 Lennestadt Schmidt Ventilsteuerung für Rammbohrgeräte
DE2911837C2 (de) * 1979-03-26 1986-09-11 Paul 5940 Lennestadt Schmidt Steuerung für selbstgetriebene Rammbohrgeräte
JPS595756B2 (ja) * 1979-07-02 1984-02-07 インステイチユト ゴルノゴ デラ エスオ− エ−エヌ エスエスエスア−ル 可逆衝撃装置
GB2111565B (en) * 1981-12-15 1985-10-02 British Telecomm Self propelled reversible boring ram
SU1313972A1 (ru) * 1983-06-08 1987-05-30 Институт Горного Дела Со Ан Ссср Реверсивное устройство ударного действи дл проходки скважин в грунте
GB2165279B (en) * 1984-10-03 1987-12-23 Inst Gornogo Dela Sibirskogo O Air-operated reversible percussive action machine
US4662457A (en) * 1984-10-19 1987-05-05 Allied Steel & Tractor Products, Inc. Reversible underground piercing device
DE8700076U1 (de) * 1987-01-02 1987-02-19 Hemmerle, Rainer, 5940 Lennestadt Rammbohrgerät

Also Published As

Publication number Publication date
EP0388627A1 (fr) 1990-09-26
JP2672387B2 (ja) 1997-11-05
JPH02272189A (ja) 1990-11-06
DE3909567A1 (de) 1990-09-27
US5148878A (en) 1992-09-22
DE3909567C2 (fr) 1993-08-19

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