EP0362481A2 - Mouton de forage - Google Patents

Mouton de forage Download PDF

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Publication number
EP0362481A2
EP0362481A2 EP89111905A EP89111905A EP0362481A2 EP 0362481 A2 EP0362481 A2 EP 0362481A2 EP 89111905 A EP89111905 A EP 89111905A EP 89111905 A EP89111905 A EP 89111905A EP 0362481 A2 EP0362481 A2 EP 0362481A2
Authority
EP
European Patent Office
Prior art keywords
housing
intermediate piece
boring machine
machine according
ram boring
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.)
Granted
Application number
EP89111905A
Other languages
German (de)
English (en)
Other versions
EP0362481A3 (fr
EP0362481B1 (fr
Inventor
Alfons Dipl.-Ing. Hesse
Original Assignee
Schmidt Paul Dipl-Ing
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 Schmidt Paul Dipl-Ing filed Critical Schmidt Paul Dipl-Ing
Publication of EP0362481A2 publication Critical patent/EP0362481A2/fr
Publication of EP0362481A3 publication Critical patent/EP0362481A3/fr
Application granted granted Critical
Publication of EP0362481B1 publication Critical patent/EP0362481B1/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
    • 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 tube which is axially movable in a housing and controlled in its movement by a control tube connected to a compressed air hose and mounted in an elastic intermediate piece arranged in the housing.
  • a ram boring machine of this type is known from U.S. Patent 3,995,702.
  • the elastic intermediate piece acts as a damping block and absorbs inevitable shocks and vibrations when the device is in operation; these influences should be kept as far as possible from the reversal.
  • the assembly i.e. the installation and removal of this damping block, however, requires complex handling and has considerable disadvantages, because the ring-like damping block is accommodated between a sleeve screwed onto the head tube and an end piece screwed into the rear end of the device housing and in its installed position secured.
  • both the damping block and the end piece and the sleeve must be threaded, which requires additional manufacturing effort.
  • the screw connection particularly when loosening after the device has been in operation for a while, presents considerable difficulties, not least due to the adverse contamination, which favors dirt flows in the production of boreholes in the ground, and are still increasing in the large devices up to 450 mm in diameter.
  • the screw parts usually provided with a sensitive fine thread and also often additionally glued to each other When removing the block, this gluing must then be released by heating at least the threaded sections of the screw parts, so that heat-related damage to the damping block cannot be ruled out.
  • ram boring machines have a head tube screwed into the rear end of the housing.
  • the head tube is either in one piece and has an end piece with an external thread that has axial air outlet openings that run concentrically to the head tube, or the end piece is a part that is separate from the head tube and is screwed onto the rear end of the head tube and together with the head tube into the housing end is screwed in. So that the end piece does not come loose from the head tube or the housing, the threads of these devices are also provided with a metal adhesive before screwing in. To remove the end piece, the machine housing must also be heated in the threaded area and the adhesive connection must be destroyed. The screw connection can then be loosened and unscrewed using the appropriate wrench and, if necessary, additional strong hammer blows. This type of connection of the head tube to the housing has various disadvantages.
  • the head tube must be fixed with respect to the machine housing and the percussion piston exactly in the axial direction to prevent leaks between the field piston and head tube, as well as avoid jamming and excessive wear between the head tube and the percussion piston.
  • this is difficult to achieve with non-centered threaded connections.
  • the disassembly described frequently leads to damage to the intermediate piece and the housing. Due to the rigid connection between the housing, the intermediate piece and the head tube, the vibrations and shocks caused by the rapid piston strokes are transmitted undamped to the head tube and the connection to the compressed air hose. Long periods of use and difficult operating conditions can cause vibrations to break, particularly in the rear area of the ram drilling machine housing.
  • the compressed air hose can also detach from the head tube, so that it generally has to be permanently connected to the head tube by means of a compression sleeve.
  • the invention has for its object to avoid the aforementioned disadvantages of known ram boring machines and in particular to improve the assembly of an elastic intermediate piece or suspension block and also to keep shocks and vibrations away from the compressed air hose.
  • the elastic intermediate piece on the head tube and / or in the housing is held axially by radial projections, so that threads for attaching the intermediate piece to the housing and head tube are not required.
  • the adapter is easy to install and only needs to be inserted into the housing.
  • the elasticity of the intermediate piece is sufficient and ensures that the head of the head tube adapts to the percussion piston; an exact axial alignment of the head tube is no longer necessary.
  • a front, radially circumferential projection can be arranged in the housing, against which the front end of the intermediate piece lies.
  • the rear end of the intermediate piece can either be fixed by a stop edge of the housing, which is created by flanging the housing end, or a groove is arranged in the rear of the housing, into which a locking ring engages.
  • a pressure plate can be arranged between the intermediate piece and the securing ring.
  • the pressure plate In the case of an advantageous multi-part locking ring, it is advisable to provide the pressure plate with a locking edge.
  • the securing edge which consists of at least two ring segments, prevents the ring from falling inwards.
  • the locking ring can be of any cross-section, but advantageously round.
  • the intermediate piece can consist of an elastomer ring with axial air outlet openings; it can easily be pushed over the circumferential locking projection on the head tube.
  • the compressed air hose can advantageously be attached to the control tube by means of a screw coupling. Overall, the ram boring machine has a longer service life.
  • the rear end of the ram boring machine consists of a housing 1 in which a percussion piston 2 moves back and forth.
  • the percussion piston movement is controlled by means of a control tube 3, to which compressed air is supplied via a compressed air hose 6.
  • the control tube 3 is connected to the housing 1 by means of an intermediate piece 4.
  • the intermediate piece 4 consists of an elastic material, e.g. Rubber or polyurethane, and prevents the impacts and vibrations transmitted by the percussion piston 2 to the housing 1 from reaching the control tube 3 and the compressed air hose 6 without damping.
  • the compressed air supplied through a bore in the control tube 3 escapes into the atmosphere after the working strokes of the percussion piston 2 via axial air outlet openings 5 of the intermediate piece 4 which are concentric with the control tube 3.
  • the compressed air hose 6 is connected to the control tube 3 by means of a screw coupling 7.
  • the intermediate piece 4 is fixed on the head tube 3 by a front, radial, circumferential projection 10 and a rear, radial, circumferential projection 11 in the axial direction. Similarly, the intermediate piece 4 is fixed in the rear end of the housing 1. Namely, the housing 1 has a front, radial, circumferential projection 12 and a rear, radial, circumferential projection 13.
  • the intermediate piece 4 has an inner and an outer metal sleeve 8, 9, for example fastened by vulcanization. These metal sleeves 8, 9 support the secure axial fit of the intermediate piece 4 relative to the housing 1 and the head tube 3.
  • an elastic securing ring 14 inserted after the insertion of the intermediate piece 4 Groove 15 of the housing 1. This retaining ring 14 can be removed again with the intermediate piece 4 for dismantling the head tube 3.
  • the locking ring 16 has a round cross section, and a pressure plate 17 is arranged between the locking ring 16 and the intermediate piece 4, which ensures a flat contact with the intermediate piece 4.
  • the pressure plate 17 is provided with a securing edge, which prevents the possibly multi-part locking ring 16 from being mounted radially, i.e. collapses inside.

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)
EP89111905A 1988-10-05 1989-06-30 Mouton de forage Expired - Lifetime EP0362481B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833882 1988-10-05
DE3833882A DE3833882C2 (de) 1988-10-05 1988-10-05 Rammbohrgerät

Publications (3)

Publication Number Publication Date
EP0362481A2 true EP0362481A2 (fr) 1990-04-11
EP0362481A3 EP0362481A3 (fr) 1991-01-30
EP0362481B1 EP0362481B1 (fr) 1994-03-16

Family

ID=6364444

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89111905A Expired - Lifetime EP0362481B1 (fr) 1988-10-05 1989-06-30 Mouton de forage

Country Status (4)

Country Link
US (1) US5074364A (fr)
EP (1) EP0362481B1 (fr)
JP (1) JP2672369B2 (fr)
DE (1) DE3833882C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578942A1 (fr) * 1992-06-30 1994-01-19 Tracto-Technik Paul Schmidt Spezialmaschinen Kg Mouton de forage

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5249634A (en) * 1990-12-10 1993-10-05 Industrial Engineering, Inc. Impact borer for embedding lines, anchoring cables, and sinking wells
DE4231400C1 (de) * 1992-09-19 1994-01-05 Tracto Technik Rammbohrgerät
GB2313643A (en) * 1996-05-31 1997-12-03 Inst Gornogo Dela Sibirskogo O Apparatus for impact action
DE19650014C2 (de) * 1996-12-03 2002-04-11 Tracto Technik Rammbohrgerät
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
AU753171B2 (en) * 1998-07-08 2002-10-10 Tracto-Technik Paul Schmidt Spezialmaschinen Positive connection between a pipe and a ring inserted into the pipe
SE528471C2 (sv) * 2004-07-05 2006-11-21 Atlas Copco Constr Tools Ab Vibrationsdämpat slående verktyg med tryckluftmatningsorgan

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2074859A5 (fr) * 1970-01-19 1971-10-08 Inst Gornogo Dela Sibirskogo O
US3708023A (en) * 1970-12-30 1973-01-02 Inst Gornogo Dela Sibirskogo O Self-propelled air-punching mechanism
US3756328A (en) * 1970-01-19 1973-09-04 B Sudnishnikov Pneumatically operated impact-action self-propelled mechanism
US3763939A (en) * 1970-07-08 1973-10-09 B Sudnishnikov Reversible impact device for driving holes in earth
US3865200A (en) * 1971-11-18 1975-02-11 Tracto Technik Burrowing apparatus
US3995702A (en) * 1975-07-08 1976-12-07 Vladimir Vasilievich Klimashko Reversible pneumatic percussive device for making holes in ground by compaction
GB2147035A (en) * 1983-09-22 1985-05-01 Kayes Engineering Limitd Improvements in and relating to impact-action self-propelled mechanism for driving holes in the earth

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179185A (en) * 1962-06-14 1965-04-20 Chicago Pneumatic Tool Co Demolition tool with shock attenuating means
CH642433A5 (de) * 1979-10-23 1984-04-13 Fritz Knoll Vorrichtung zur absorption von bewegungsenergie.
SU1313973A1 (ru) * 1984-06-20 1987-05-30 Институт Горного Дела Со Ан Ссср Пневматическое реверсивное устройство ударного действи дл проходки скважин в грунте

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2074859A5 (fr) * 1970-01-19 1971-10-08 Inst Gornogo Dela Sibirskogo O
US3756328A (en) * 1970-01-19 1973-09-04 B Sudnishnikov Pneumatically operated impact-action self-propelled mechanism
US3756328B1 (en) * 1970-01-19 1991-01-29 Pneumatically operated impact-action self-propelled mechanism
US3763939A (en) * 1970-07-08 1973-10-09 B Sudnishnikov Reversible impact device for driving holes in earth
US3708023A (en) * 1970-12-30 1973-01-02 Inst Gornogo Dela Sibirskogo O Self-propelled air-punching mechanism
US3865200A (en) * 1971-11-18 1975-02-11 Tracto Technik Burrowing apparatus
US3995702A (en) * 1975-07-08 1976-12-07 Vladimir Vasilievich Klimashko Reversible pneumatic percussive device for making holes in ground by compaction
GB2147035A (en) * 1983-09-22 1985-05-01 Kayes Engineering Limitd Improvements in and relating to impact-action self-propelled mechanism for driving holes in the earth

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0578942A1 (fr) * 1992-06-30 1994-01-19 Tracto-Technik Paul Schmidt Spezialmaschinen Kg Mouton de forage

Also Published As

Publication number Publication date
DE3833882C2 (de) 1996-07-04
EP0362481A3 (fr) 1991-01-30
DE3833882A1 (de) 1990-04-12
JPH02108786A (ja) 1990-04-20
US5074364A (en) 1991-12-24
EP0362481B1 (fr) 1994-03-16
JP2672369B2 (ja) 1997-11-05

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