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EP0558097A1 - Mouton de forage - Google Patents

Mouton de forage Download PDF

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Publication number
EP0558097A1
EP0558097A1 EP93106712A EP93106712A EP0558097A1 EP 0558097 A1 EP0558097 A1 EP 0558097A1 EP 93106712 A EP93106712 A EP 93106712A EP 93106712 A EP93106712 A EP 93106712A EP 0558097 A1 EP0558097 A1 EP 0558097A1
Authority
EP
European Patent Office
Prior art keywords
boring machine
ram boring
machine according
pistons
tip
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
EP93106712A
Other languages
German (de)
English (en)
Other versions
EP0558097B1 (fr
Inventor
Paul Schmidt
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.)
Tracto Technik GmbH and Co KG
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
Priority claimed from DE19873724619 external-priority patent/DE3724619A1/de
Application filed by Individual filed Critical Individual
Publication of EP0558097A1 publication Critical patent/EP0558097A1/fr
Application granted granted Critical
Publication of EP0558097B1 publication Critical patent/EP0558097B1/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
    • 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
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E21B7/068—Deflecting the direction of boreholes drilled by a down-hole drilling motor

Definitions

  • the invention relates to a pressure medium driven ram boring machine for earth bores with a striking tip arranged radially adjustable in the housing and acted upon by a percussion piston moved to and fro in a device housing.
  • a hydraulic drilling ram The structure and function of a hydraulic drilling ram are described in German Patent No. 21 57 295.
  • a ram boring machine primarily serves to lay supply lines, such as water pipes or cables under roads or dams or other buildings and obstacles, without having to rip open the road surface or the surface of the earth at the same time. This is done in such a way that the ram boring machine moving forward in the soil displaces the soil to the side and leaves a channel in which the supply line is drawn in simultaneously or later.
  • the impact tip is used to smash stones and other obstacles and push them aside during the forward movement of the ram boring machine, i.e. to clear the way for the moving housing.
  • a ram boring machine with a targeted running direction is known from DE-OS 22 42 605 and has at its rear end a tubular bent extension, which is also provided with curved guide surfaces in order to achieve an arcuate course of the earth bore in this way.
  • Making such curved earth bores is necessary, for example, when there is no way to dig start and target pits in narrow streets with narrow sidewalks, which have to be at least so deep that the ram boring machine can be placed horizontally in the starting pit and all below lines lying under the road surface.
  • the rigid baffles therefore serve to enable an arcuate course of the earth bore that is already intended before the device is attached; the direction cannot be influenced during operation.
  • British Patent Specification 1 303 547 describes a pressure-driven ram boring machine for earth bores with an impact tip acted upon by a percussion piston moved to and fro in the device housing, which is enveloped by a jacket tube at a distance and is radially adjustable relative to the jacket tube by means of actuating means that can optionally be subjected to pressure medium, by the direction of advance to influence or correct the ram boring machine during operation.
  • the tip of the drill can be adjusted radially by means of controlled adjustable adjusting elements.
  • the propulsion is not generated by a ram drilling machine operated by pressure medium, but by striking the end of a pipe connected to the tip.
  • the invention has for its object to provide a ram boring machine with which targeted changes in direction can be carried out.
  • the impact tip which can either be arranged in the housing in a longitudinally movable manner or rigidly connected to the housing, can be adjusted as desired from its usually central position in the housing in the case of a course deviating from the straight direction of advance either in a horizontal or vertical plane, and thus the Counteract the directional deviation accordingly.
  • Deviations in direction can be registered, for example, by a measuring sensor arranged on the ram boring machine and read by an operator on a remote control panel. If the direction changes, the operator can initiate the appropriate correction from the control panel, for example via hydraulic or pneumatic pressure lines connected to the impact tip.
  • a plurality of actuating pistons can be provided in a radial plane around the pin of the percussion tip.
  • three pistons which can be acted upon independently of one another can advantageously be arranged circumferentially distributed and connected to supply connections via pressure lines arranged in the housing of the ram boring machine. While the piston of one pump is pressurized, e.g. presses against the peg with a shell and moves the tip out of its central position, the pistons of the other pumps move accordingly into the pump housing or into the cylinder space, i.e. the pin or the percussion tip is positioned by means of coordinated adjusting movements of the piston pumps.
  • a compression spring interacting unlockable locking sleeve which surrounds a centering ring of the pin of the hammer tip in the central position of the hammer tip, can ensure straight running of the ram boring machine in the depressurized state of the pistons, ie the hammer tip is fixed during normal operation in its central position, from which it is only desired changes in direction can be adjusted, which requires the previous unlocking of the locking sleeve against the force of the compression spring.
  • the locking sleeve can be removed from its seat enclosing the centering ring by supplying a pressure medium, such as, in particular, hydraulic fluid, into a cylinder space receiving the locking sleeve.
  • the locking sleeve can advantageously be designed as an axially movable control slide which has an axial central bore in an extension pin which can be acted upon by a pressure medium and, according to the number of pistons to be supplied, has radial distributor bores which can be connected to control lines of the pistons.
  • all the pistons can be supplied with hydraulic fluid by means of only one pressure line led from the rear end through the housing of the ram boring machine; because the control slide is pushed axially depending on the adjustable pressure acting on the extension pin acting as a piston until a flow connection is established that connects the central bore with the radial distributor bore and the control line of the driven piston.
  • the radial distributor bores are arranged axially spaced apart circumferentially from one another in the extension pin.
  • axially displaceable actuating pistons with oblique piston surfaces on corresponding, oppositely inclined oblique surfaces can end of the pin of the impact tip.
  • the radial adjustment of the impact tip is achieved by moving at least one piston in the direction opposite to the displacement direction of the other pistons, i.e. all pistons are moved from their starting position defined by the central position of the impact tip, but at least one piston in a different direction than the other pistons. Any radial adjustments can be carried out by means of the inclined plane defined by the corresponding inclined surfaces.
  • the actuating pistons can be supported against compression springs, which are advantageously arranged in recesses in a centering shell that positively engages a spherical thickening of the pin.
  • compression springs keep the percussion tip in its central position, the spring force corresponding to the pressure applied to the pistons, i.e. the pistons are clamped between the spring column and the liquid column.
  • one piston is loaded with a pressure that exceeds the spring force, while the other actuating pistons are depressurized.
  • the depressurized actuating pistons are moved from their initial position by the relaxing compression springs against the direction of the actuating piston which is subjected to higher pressure. After correcting the direction, all pistons are loaded with the same pressure corresponding to the spring force. The compressed spring then relaxes while the relaxed springs are compressed to the initial position of the pistons; the springs return the pistons to their original position.
  • pneumatically inflatable rubber bellows can preferably be arranged in a radial plane around the pin of the impact tip. The when the rubber bellows which are supported in the housing of the ram boring machine are inflated, the reaction force exerts a movement which displaces the striking tip from its central position.
  • a ram boring machine 201 is shown with a longitudinally movable striking tip 204 provided with a step head 203.
  • the striking tip 204 of the ram boring machine 201 is held in the central position by a locking sleeve 20 during normal operation, that is to say during the straight running of the ram boring machine 201.
  • a compression spring 21 pushes the locking sleeve 20, which is axially displaceable in a cylinder space 22, via a centering ring 23 arranged on the end of the pin 5 of the impact tip 204 facing away from the collar 206.
  • three actuating pistons 24, 25, 26 are arranged in a radial plane (Fig. 2), the cylinder spaces 27 via pressure lines 17 with the at the rear end of The ram boring machine 201 arranged supply connections 18 (see FIG. 11) are connected.
  • the hydraulic fluid supplied via a hydraulic line (not shown) is applied to the cylinder space 22 and the locking sleeve 20 is pushed against the force of the compression spring 21 by the centering ring 23 .
  • Subsequent action on one of the actuating pistons 24 to 26 moves the percussion tip 204 into the desired eccentric position; corresponding to the eccentric position of the striking tip 204 shown in FIG. 3, the actuating piston 24 acts on the pin 205 and thus the striking tip 204 with a greater force than the actuating pistons 25, 26.
  • the actuating pistons 25, 26 can optionally be completely depressurized, the hydraulic fluid running out of the cylinder spaces 27 via return lines, not shown.
  • the cylinder space 22 of the locking sleeve 20 is relieved, so that the compression spring 21, which then relaxes, pushes the locking sleeve 20 onto the centering ring 23 and fixes the center position of the impact tip 204.
  • Both the centering ring 23 and the locking sleeve 20 have sloping guide surfaces 28 and 29 that support the pushing on of the locking sleeve 20.
  • the locking sleeve 20 that fixes the striking tip 204 in the central position allows the actuating pistons 24 to 26 to be depressurized during the locking, i.e. pressure only acts on the actuating pistons when the direction changes.
  • the ram boring machine 301 with a rigid, ie not longitudinally movable impact tip 304 according to FIGS. 4 to 7 has actuating pistons 324, 325, 326 and also arranged in a radial plane around a pin 305 of the impact tip 304 a locking sleeve 320 designed as a control slide 30.
  • the locking sleeve 320 of the control slide 30 receives in a cavity 31 a compression spring 321 which, in the central position shown in FIG. 4, also has a freely movable limiting disk 32 arranged in the cavity 31 in contact with a tapering one Mouthpiece 33 of the locking sleeve 320 holds.
  • the mouthpiece 33 engages around a centering ring 323, which is located on the end of the pin 305 of the striking tip 304 facing away from the spherical thickening 316.
  • the locking sleeve 320 continues on the side facing away from the mouthpiece 33 as an extension pin 34 which projects into a cylinder space 36 connected via a pressure line 35 to a pressure medium source (not shown).
  • the extension pin 34 is provided with an axial central bore 37 and radial, circumferentially distributed, axially spaced distributor bores 38.
  • a control line 39 leads from each cylinder space 327 of the actuating pistons 324, 325, 326 to the extension pin 34 of the control slide 30.
  • the control lines 39 of which only the control lines 39 associated with the actuating pistons 324 and 326 are shown in the longitudinal sections according to FIGS. 4 and 6 can optionally be connected to the radial distributor bores 38 of the extension pin 34.
  • the pressure-free line 35 according to FIG. 4 is first subjected to a pressure P0, whereupon the compression spring 321 is compressed and the control slide 30 is moved in the direction of arrow 40.
  • the mouthpiece 33 of the locking sleeve 320 slides over the centering ring 323 of the pin 305 of the striking tip 304, ie the centering ring 323, together with the limiting disk 32, penetrates relatively further into the cavity 31 of the locking sleeve 320; which is a pretense the striking tip 304 from the central position preventing the seat of the locking sleeve 320 and the centering ring 323 is removed.
  • the pressure P 1 prevails in the cylinder space 36, ie there is a flow connection between the pressure line 35 and the control line 39 associated with the control piston 324 and a flow connection between the pressure line 35 and the cylinder space 327 of the control piston 324.
  • the Actuating piston 324 pressurized places the striking tip 304 in the ball joint defined by the spherical thickening 316 in the desired eccentric position. After the direction correction, the pressure line 35 is depressurized; the then relaxing compression spring 321 moves the control slide 30 against the direction of arrow 40 back into its starting position shown in FIG.
  • any number of actuating pistons can pass through the housing 302 via only one from the rear end of the ram boring machine 301 pressure line 35 guided up to the cylinder space 36 of the control slide 30 are supplied; it also only requires a return line.
  • actuating pistons 41, 42, 43 are arranged in a radial plane around the end of the pin 405 of the impact tip 404 lying inside the ram drilling device 401.
  • the actuating pistons 41, 42, 43 lie with oblique piston surfaces 44 of radial piston projections 45 on corresponding, oppositely inclined oblique surfaces 46 of the inner end 47 of the pin 405.
  • the actuating pistons 41, 42, 43 are held in the neutral position, shown in FIG. 8, of the striking tip 404 by the pressure fluid supplied via the pressure lines 17 (cf. FIG. 11) into the cylinder spaces 48 and by pressure springs 49.
  • the compression springs 49 are arranged in recesses 50 of a centering shell 51 which surrounds approximately half of the outer surface of the spherical thickening 416 of the impact tip 404; the ball joint bearing is completed by correspondingly shaped inner surfaces of the stepped head 403, which encloses the other half of the spherical thickening 416 with inner shell surfaces.
  • the cylinder space 48 of the actuating piston 41 is acted upon by a pressure which overcomes the force of the compression spring 49, so that the compression spring 49 which supports the actuating piston 41 is compressed.
  • the pressure in the cylinder chambers 49 of the actuating pistons 42, 43 is simultaneously reduced to a value below the force of the compression springs 49 assigned to the actuating pistons 42, 43.
  • the adjusting piston 41 moves in the direction of the arrow 52 and the adjusting pistons 42, 43 according to the arrow 53 in the opposite direction.
  • the striking tip 404 is adjusted to the eccentric position according to FIG. 10.
  • the pressure in the cylinder space 48 of the actuating piston 41 is reduced and the pressure in the cylinder spaces 48 of the actuating piston 42, 43 is increased.
  • the adjusting piston 41 is advanced by the relaxing compression spring 49 against the direction of the arrow 52 and at the same time the compression springs 49 assigned to the adjusting pistons 42, 43 are pressed together by the advancing adjusting pistons 42, 43 against the direction of the arrow 53 until the neutral starting position according to FIG. 8 is reached is.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
EP93106712A 1987-07-25 1988-07-07 Mouton de forage Expired - Lifetime EP0558097B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19873724619 DE3724619A1 (de) 1987-07-25 1987-07-25 Rammbohrgeraet
DE3724619 1987-07-25
DE3735018A DE3735018C2 (de) 1987-07-25 1987-10-16 Rammbohrgerät
DE3735018 1987-10-16
EP88110828A EP0301287B1 (fr) 1987-07-25 1988-07-07 Mouton de forage

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP88110828.6 Division 1988-07-07

Publications (2)

Publication Number Publication Date
EP0558097A1 true EP0558097A1 (fr) 1993-09-01
EP0558097B1 EP0558097B1 (fr) 1996-06-05

Family

ID=25857930

Family Applications (2)

Application Number Title Priority Date Filing Date
EP88110828A Expired - Lifetime EP0301287B1 (fr) 1987-07-25 1988-07-07 Mouton de forage
EP93106712A Expired - Lifetime EP0558097B1 (fr) 1987-07-25 1988-07-07 Mouton de forage

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP88110828A Expired - Lifetime EP0301287B1 (fr) 1987-07-25 1988-07-07 Mouton de forage

Country Status (4)

Country Link
US (1) US4938297A (fr)
EP (2) EP0301287B1 (fr)
JP (1) JP2871697B2 (fr)
DE (1) DE3735018C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110753778A (zh) * 2017-05-25 2020-02-04 国民油井Dht有限公司 井下可调弯头组件

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DE19947645C1 (de) * 1999-10-04 2001-03-15 Tracto Technik Lenkbare Erdrakete und ein Verfahren zum Lenken
EP1218617A2 (fr) 1999-10-04 2002-07-03 Tracto-Technik GmbH Missile terrestre guidable
US6273201B1 (en) 2000-02-16 2001-08-14 Earth Tool Company, L.L.C. Pneumatic ground piercing tool with movable chisel head
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US7506706B2 (en) * 2005-11-21 2009-03-24 Hall David R Retaining element for a jack element
US7753144B2 (en) * 2005-11-21 2010-07-13 Schlumberger Technology Corporation Drill bit with a retained jack element
US8360174B2 (en) 2006-03-23 2013-01-29 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US8522897B2 (en) 2005-11-21 2013-09-03 Schlumberger Technology Corporation Lead the bit rotary steerable tool
US7571780B2 (en) 2006-03-24 2009-08-11 Hall David R Jack element for a drill bit
DE102006060320A1 (de) * 2006-12-20 2008-06-26 Robert Bosch Gmbh Schlagwerk für eine Handwerkzeugmaschine
US20080283263A1 (en) * 2007-05-15 2008-11-20 Hsin Fa Kang Air tool
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US8534527B2 (en) * 2008-04-03 2013-09-17 Black & Decker Inc. Cordless framing nailer
US9216502B2 (en) 2008-04-03 2015-12-22 Black & Decker Inc. Multi-stranded return spring for fastening tool
US8701799B2 (en) 2009-04-29 2014-04-22 Schlumberger Technology Corporation Drill bit cutter pocket restitution
US8820435B2 (en) * 2010-10-13 2014-09-02 Danuser Llc Auger for digging holes
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US9346158B2 (en) 2012-09-20 2016-05-24 Black & Decker Inc. Magnetic profile lifter
US9399281B2 (en) 2012-09-20 2016-07-26 Black & Decker Inc. Stall release lever for fastening tool
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Publication number Priority date Publication date Assignee Title
CN110753778A (zh) * 2017-05-25 2020-02-04 国民油井Dht有限公司 井下可调弯头组件
CN110753778B (zh) * 2017-05-25 2021-09-24 国民油井Dht有限公司 井下可调弯头组件
US11225835B2 (en) 2017-05-25 2022-01-18 National Oilwell DHT, L.P. Downhole adjustable bend assemblies

Also Published As

Publication number Publication date
EP0301287A3 (en) 1990-11-22
EP0558097B1 (fr) 1996-06-05
JPS6443694A (en) 1989-02-15
DE3735018A1 (de) 1989-04-27
EP0301287A2 (fr) 1989-02-01
EP0301287B1 (fr) 1994-01-19
DE3735018C2 (de) 1995-02-16
US4938297A (en) 1990-07-03
JP2871697B2 (ja) 1999-03-17

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