WO2011023350A1 - Appareil de forage par percussion présentant un entraînement pneumatique et une inversion hydraulique de la direction de déplacement - Google Patents

Appareil de forage par percussion présentant un entraînement pneumatique et une inversion hydraulique de la direction de déplacement Download PDF

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Publication number
WO2011023350A1
WO2011023350A1 PCT/EP2010/005151 EP2010005151W WO2011023350A1 WO 2011023350 A1 WO2011023350 A1 WO 2011023350A1 EP 2010005151 W EP2010005151 W EP 2010005151W WO 2011023350 A1 WO2011023350 A1 WO 2011023350A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
percussion piston
ram boring
boring device
movement
Prior art date
Application number
PCT/EP2010/005151
Other languages
German (de)
English (en)
Inventor
Gerhard Völkel
Original Assignee
Tracto-Technik Gmbh & Co. Kg
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 Tracto-Technik Gmbh & Co. Kg filed Critical Tracto-Technik Gmbh & Co. Kg
Publication of WO2011023350A1 publication Critical patent/WO2011023350A1/fr

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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 device with a pneumatic drive and a hydraulic reversal of the direction of movement.
  • Rammbohrvorraumen as used in particular for the production of horizontal
  • Ground bores are usually driven by means of a percussion piston, which is reciprocated within the housing and thereby bounces, depending on the desired direction of movement of the device on a front or rear impact surface.
  • the transmitted thereby kinetic energy of the percussion piston ensures an acceleration of the ram boring device within the soil.
  • a reversal of the direction of movement is achieved in that the middle position (between the two turning points) of the percussion piston from a front to a rear position - or vice versa - is moved.
  • the percussion piston strikes either the front or rear striking surface and thereby defines the direction of movement of the device.
  • a ram boring device in which a control tube is firmly connected to a compressed air supply.
  • the control tube is connected both longitudinally and rotationally via a prestressed helical spring with a housing-fixed component.
  • the spring forces the head tube, on which a percussion piston is arranged to be axially movable, in a forward position (preliminary position) and locks it in this position by a quarter turn into a corresponding locking groove.
  • control tube is unlocked by a quarter turn of the compressed air supply against the spring bias, so that the control tube under the influence of compressed air and against the longitudinal axial spring force in a rear position (return) is moved. As in the front position, the control tube locks there under the influence of the rotationally biased spring.
  • control tube is again rotated by means of compressed air supply and also the amount of air pressure is lowered so far that the longitudinal axial spring force exceeds the force acting on the control tube by the compressed air.
  • the head tube automatically moves to its forward position.
  • control tube For reversing a Rammbohrvortechnisch according to DE 39 09 567 A1 thus the control tube must be rotated by a rotation of the compressed air supply and in addition the height of the air pressure to be temporarily lowered.
  • the groove is seated in the inside of the control sleeve and has a zigzag-shaped course, so that the control tube carries out a combined rotary and translatory movement with the spring moving in the groove.
  • Percussion piston result. There is also the risk that water and soil penetrates into the device due to the short-term lack of pressure in the device. In both cases, the ram boring tool must then be recovered by excavation, which results in a significant additional effort and a considerable loss of time.
  • the invention is based on the object to provide an improved pneumatically driven Rammbohrvorraum whose direction of movement can be switched without affecting the compressed air supply.
  • the invention provides a ram boring device, which is driven pneumatically by means of a drive pressure gas supplied via a first supply line (preferably compressed air), by means of a pressurized fluid, which is supplied to the ram boring device independently of the drive pressure air, from the flow in the return and vice versa.
  • a drive pressure gas supplied via a first supply line (preferably compressed air)
  • a pressurized fluid which is supplied to the ram boring device independently of the drive pressure air, from the flow in the return and vice versa.
  • a ram boring device therefore has at least one percussion piston mounted within a housing and driven in a cyclical reciprocating motion by a drive pressure gas, in particular striking the ram boring device in a first direction of movement to drive, and in a second switching position impinges on a rear impact surface to drive the ram boring device in a second direction of movement, and wherein the switching between the directions of movement is effected by shifting the central position of the percussion piston within the housing.
  • the ram boring device according to the invention is further characterized in that the shifting of the middle ren position of the percussion piston by a pressurized fluid, which is supplied to the ram boring device independently of the drive pressure air.
  • ram boring any device which is moved intermittently in an existing or created conduit to create or expand a bore or destructively or non-destructively replace or clean an existing conduit, conduits into existing conduits or others Long bodies to collect as well as all devices for construction work of the underground tunneling.
  • the ram boring device according to the invention is not limited to underground earthworks.
  • lines in which a Erdbohr réelle is operated run above ground.
  • the reversal of the impact stroke hydraulically, i. by supplying a Drucktlüs- stechnik takes place.
  • the use of a pressure fluid has the advantage that it is substantially incompressible and therefore exact control of the position of the percussion piston within the housing of the device can be easily implemented.
  • a compressed gas and in particular compressed air for reversing which is supplied to the ram boring device by an additional supply line and optionally with a different pressure level than the driving pressure gas.
  • a guide tube which can be directly or indirectly immovably connected to the housing of the ram boring device.
  • a control sleeve and on the control sleeve a percussion piston can be arranged in each case axially displaceable.
  • the percussion piston can reciprocate on the control sleeve under the influence of the supplied drive-pressure gas, with control openings being opened and closed at a regular time interval and thus successively connecting or disconnecting different working chambers of the ram-boring device to the drive-pressure gas.
  • the outer surface of the guide tube and the inner surface of the control sleeve can form an annular pressure chamber with correspondingly arranged annular edges, which is filled by a pressurized fluid and in particular a pressure fluid.
  • the Size of the pressure chamber is defined by the relative longitudinal axial position of the two components to each other and can be varied by appropriate displacement. For fixing or varying the size of the pressure chamber, it is provided to vary the height of the pressure of the pressure fluid as a function of the external pressure or another counterforce, for example a spring force.
  • the pressure chamber may have any shape in addition to the ring shape.
  • the pressure chamber can be formed only by a partial circle of the outer or inner circumference of the guide tube or the control sleeve.
  • the size of the pressure chamber defines the mean position of the reciprocating percussion piston in the housing. Thus, it can be influenced directly via the height of the pressure of the pressurized fluid, whether the percussion piston impinges on a front or rear impact surface of the ram boring device.
  • the stroke of the percussion piston and consequently its frequency and its impact intensity can be influenced.
  • To supply the pressure chamber with the pressure fluid may be provided to arrange an additional fluid line within the head tube.
  • the fluid line is designed as a hydraulic line and leads to at least one outlet opening for the pressure fluid in the region of the drill head.
  • the hydraulic line can be guided by the percussion piston, whose end face has a corresponding through hole.
  • the outlet opening for the pressure fluid can serve to flush a rinsing liquid in the
  • drilling fluids can be used as a rinsing liquid, whose properties can be adapted to the respective drilling conditions by adding additives.
  • the drill head on a plurality of outlet openings, which are advantageously arranged in a circle in a uniform pitch on the circumference of the drill head. It can thereby be achieved that the rinsing liquid is introduced as evenly as possible into the soil in the area of the drill head. In a further advantageous embodiment, it is provided to discharge the rinsing liquid under pressure from the ram boring device on one side. The resulting lateral force leads to a lateral deflection of the device, which can be used for a direction correction.
  • a pressure limiting valve can be arranged in the hydraulic line, in particular in the section between an inlet for the pressure chamber and the outlet opening or openings in the region of the drill head.
  • the pressure-limiting valve can serve, for example, to shut off the outlet openings from the pressure supply up to a certain pressure level in the hydraulic line.
  • dss pressure rinsing liquid is introduced into the soil.
  • the fluid pressure can thus be used exclusively for reversing the direction of movement.
  • the pressure chamber is designed so that at a high pressure, the control sleeve is displaced together with the percussion piston in the direction of a switching position for forward movement of the ram boring device. If, on the other hand, the pressure is lowered further, the control sleeve, together with the percussion piston, shifts under the influence of the drive air or another force and against the fluid pressure in the pressure chamber in the direction of a switching position for a backward movement of the device.
  • Rinse liquid is stopped in the soil in the reverse operation of the device.
  • the outflow of rinsing liquid into the ground can be switched on or off in the forward operation of the device without triggering a reversal of the direction of movement of the device.
  • the hydraulic pressure can be adjusted either above (flushing agent outlet switched on) or just below (flushing agent outflow switched off) of the limit value of the pressure limiting valve. The switching position of the pressure chamber can remain unaffected.
  • the device according to the invention makes it possible to operate a ram boring device pneumatically with as uniform a pressure as possible in terms of pressure and / or volume flow, and to carry out the reversal of the direction of movement by means of a pressurized fluid supplied independently of the drive pressure gas. As a result, incorrect control can be prevented due to fluctuating pneumatic pressure of the drive gas.
  • a pulling or turning on the compressed air supply as is usually provided in the prior art for the reversal of the direction of movement, omitted. It is particularly advantageous if a pressure fluid, which is used for reversing the direction of movement, is introduced into the soil in order to soften it and / or to generate a lateral force, which is utilized for directional control of the device.
  • FIG. 1 shows a sectional side view of a ram boring device according to the invention
  • Fig. 2 the rear portion of the ram boring of Fig. 1 in an enlarged view
  • FIG. 3 shows the front portion of the ram boring apparatus of Fig. 1 in an enlarged view.
  • the illustrated embodiment of a ram boring device according to the invention consists essentially of a housing 1, in which a drill head 2 is screwed.
  • Percussion piston 3 reciprocates under the influence of compressed air in the housing, the percussion piston 3 within each period, depending on its central position (between the two turning points), either on a front
  • Striking surface 4 or a rear impact surface 5 hits.
  • the transmitted shock energy leads to an acceleration of the housing.
  • the middle position of the percussion piston 3 and consequently the direction of movement of the ram boring device is determined by the position of the control sleeve 6.
  • the control sleeve 6 is seated within the percussion piston 3 and, depending on the position of the two
  • the ram boring device has a guide tube 10, which is connected to the housing 1 and a supply line 14 for the compressed air.
  • the control sleeve 6 is seated axially (in the limits defined by the edges 21) displaceably on the guide tube 10.
  • the arrangement of the edges 21 on the inner circumference of the control sleeve 6 and the outer periphery of the guide tube 10 is achieved that the two components an annular pressure chamber eleventh form, whose size is changed by the relative movement of the components to each other.
  • a hydraulic line 12 extends within the guide tube 10 and extends into the front region of the device.
  • a connection (inlet 13) is the
  • the hydraulic line 12 extends within the compressed air supply 14 and within the guide tube 10. Similarly, it is possible to arrange the hydraulic line 12 wholly or substantially outside the compressed air supply 14 and / or the guide tube 10.
  • the hydraulic line 12 extends further through the percussion piston 3, which has corresponding holes, up to the drill head 2 of the device.
  • Embodiment of the drill head 2 represents a multi-stage head. This consists of a chisel 15 with an attached step cone 16. The rear end of the chisel projects to a small extent in the outer working space 8, so that the percussion piston 3 first strikes the chisel 15 and propels it and the step cone 16 into the soil lying in front of the ram boring device , This allows a targeted high introduction of impact energy into the soil.
  • the movement that the bit performs relative to the housing 1 of the ram boring device can be allowed by the hydraulic line 12, for example by being designed to be elastic. Another possibility is that the hydraulic line 12 is designed with an excess length which corresponds to the relative movement of the bit 15 in the housing 1.
  • a pressure limiting valve 18 is arranged within a valve chamber 17 of the chisel 15.
  • the pressure relief valve 18 opens at a certain pressure within the hydraulic line 12 and releases a channel 19, which extends longitudinally within the chisel 15 and leads to two outlet openings 20 in the chisel tip.
  • Outlets 20 occurs when the valve 18 is open rinsing fluid under pressure into the soil.
  • the rinsing liquid serves to soften the soil before the step cone 16, so that a better drilling progress can be achieved.

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)

Abstract

L'invention concerne un appareil de forage par percussion à entraînement pneumatique, dont la direction de déplacement est inversée hydrauliquement. A cet effet, il peut être prévu d'envoyer un liquide sous pression, via une conduite hydraulique (12), dans une chambre à pression (11) dont l'extension axiale longitudinale influence la position médiane du piston percuteur (3) entraîné pneumatiquement selon un mouvement de va-et-vient, de sorte que le piston percuteur rencontre soit une surface de percussion avant (4), soit une surface de percussion arrière (5), et accélère l'appareil de forage à piston dans la direction correspondante. Selon une forme d'exécution avantageuse, il est prévu d'introduire le liquide sous pression dans le sol, en amont de l'appareil de forage par percussion, en vue d'ameublir le sol et d'améliorer la progression du forage.
PCT/EP2010/005151 2009-08-24 2010-08-23 Appareil de forage par percussion présentant un entraînement pneumatique et une inversion hydraulique de la direction de déplacement WO2011023350A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009038385.9 2009-08-24
DE200910038385 DE102009038385B4 (de) 2009-08-24 2009-08-24 Rammbohrvorrichtung mit einem pneumatischen Antrieb und einer hydraulischen Umsteuerung der Bewegungsrichtung

Publications (1)

Publication Number Publication Date
WO2011023350A1 true WO2011023350A1 (fr) 2011-03-03

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Application Number Title Priority Date Filing Date
PCT/EP2010/005151 WO2011023350A1 (fr) 2009-08-24 2010-08-23 Appareil de forage par percussion présentant un entraînement pneumatique et une inversion hydraulique de la direction de déplacement

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Country Link
DE (1) DE102009038385B4 (fr)
WO (1) WO2011023350A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016070987A1 (fr) * 2014-11-04 2016-05-12 Tracto-Technik Gmbh & Co. Kg Fusée de compactage
CN111577567A (zh) * 2020-06-09 2020-08-25 中国石油天然气集团有限公司 一种气体钻井用气液耦合冲压装置
US11076113B2 (en) 2013-09-26 2021-07-27 Rosemount Inc. Industrial process diagnostics using infrared thermal sensing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015008340A1 (de) * 2015-07-01 2017-01-05 Tracto-Technik Gmbh & Co. Kg "Rammbohrvorrichtung"

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2105229A1 (fr) 1971-02-08 1972-08-10
DE3909567A1 (de) 1989-03-23 1990-09-27 Schmidt Paul Rammbohrgeraet
EP0484839A2 (fr) * 1990-11-06 1992-05-13 The Charles Machine Works Inc Outil de forage percutant réversible
DE19617603C1 (de) * 1996-05-02 1997-09-18 Tracto Technik Umsteuerbares Rammbohrgerät
DE19830428A1 (de) * 1998-03-21 1999-09-30 Tracto Technik Formschlüssige Verbindung zwischen einem Rohr und einem in das Rohr eingesetzten Ring

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8403508U1 (de) * 1984-02-07 1984-05-03 Walter, Hans-Philipp, 7102 Weinsberg Bohrhammer
GB8801042D0 (en) * 1988-01-18 1988-02-17 British Telecomm Boring ram
CH680937A5 (fr) * 1989-01-12 1992-12-15 Terra Ag Tiefbautechnik
DE29518159U1 (de) * 1995-11-16 1996-01-04 Tracto-Technik Paul Schmidt Spezialmaschinen, 57368 Lennestadt Steuerung für den Vor- und Rücklauf von Rammbohrgeräten
DE19858519C2 (de) * 1998-12-18 2002-08-29 Tracto Technik Pneumatisch umsteuerbares Rammbohrgerät

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2105229A1 (fr) 1971-02-08 1972-08-10
DE3909567A1 (de) 1989-03-23 1990-09-27 Schmidt Paul Rammbohrgeraet
EP0484839A2 (fr) * 1990-11-06 1992-05-13 The Charles Machine Works Inc Outil de forage percutant réversible
DE19617603C1 (de) * 1996-05-02 1997-09-18 Tracto Technik Umsteuerbares Rammbohrgerät
DE19830428A1 (de) * 1998-03-21 1999-09-30 Tracto Technik Formschlüssige Verbindung zwischen einem Rohr und einem in das Rohr eingesetzten Ring

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11076113B2 (en) 2013-09-26 2021-07-27 Rosemount Inc. Industrial process diagnostics using infrared thermal sensing
WO2016070987A1 (fr) * 2014-11-04 2016-05-12 Tracto-Technik Gmbh & Co. Kg Fusée de compactage
AU2015342237B2 (en) * 2014-11-04 2018-08-23 Tracto-Technik Gmbh & Co. Kg Drilling ram device
US10828763B2 (en) 2014-11-04 2020-11-10 Tracto-Technik Gmbh & Co. Kg Percussion drilling device
CN111577567A (zh) * 2020-06-09 2020-08-25 中国石油天然气集团有限公司 一种气体钻井用气液耦合冲压装置
CN111577567B (zh) * 2020-06-09 2024-04-30 中国石油天然气集团有限公司 一种气体钻井用气液耦合冲压装置

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Publication number Publication date
DE102009038385B4 (de) 2014-05-28
DE102009038385A1 (de) 2011-03-17

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