EP1632637B1 - Outil de travail du sol et procédé pour introduire un élément de travail dans le sol - Google Patents

Outil de travail du sol et procédé pour introduire un élément de travail dans le sol Download PDF

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Publication number
EP1632637B1
EP1632637B1 EP05016121A EP05016121A EP1632637B1 EP 1632637 B1 EP1632637 B1 EP 1632637B1 EP 05016121 A EP05016121 A EP 05016121A EP 05016121 A EP05016121 A EP 05016121A EP 1632637 B1 EP1632637 B1 EP 1632637B1
Authority
EP
European Patent Office
Prior art keywords
piston
working element
ground
working
vibrations
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.)
Not-in-force
Application number
EP05016121A
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German (de)
English (en)
Other versions
EP1632637A1 (fr
Inventor
Carl Dr. Hagemeyer
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.)
Eurodrill GmbH
Original Assignee
Eurodrill GmbH
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Filing date
Publication date
Application filed by Eurodrill GmbH filed Critical Eurodrill GmbH
Publication of EP1632637A1 publication Critical patent/EP1632637A1/fr
Application granted granted Critical
Publication of EP1632637B1 publication Critical patent/EP1632637B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Definitions

  • the invention relates to a cultivator for introducing a working element in the ground using vibrations, with a vibration generator, which is designed for generating and transmitting vibrations to the working element.
  • the invention further relates to a method for introducing a working element into the ground, in which vibrations are generated and transmitted to the working element during its introduction into the ground.
  • the WO 2004/009298 A describes a drill with a working piston inside a cylinder chamber.
  • the working piston is vibrated by alternately applying a pressure above and below the piston, with the piston reciprocating in a bore.
  • the cylinder chamber has an inlet portion for introducing the pressurized fluid into the bore above a first surface of the working piston and an outlet portion for expelling the pressurized fluid from the bore below the second surface of the working piston.
  • vertical vibrators For driving sheet piles or piles into the ground, so-called vertical vibrators with vibrating cells are known. Such a vertical vibrator is for example from the EP 0 824 971 B1 out.
  • the vibrating cell described herein has paired driven rotating imbalances that are synchronized by gears, so that the resulting inertial forces occur substantially only in one direction of action. The laterally acting centrifugal forces should compensate each other by the special synchronization of the gears.
  • U.S.-A-4,155,287 discloses a hydraulically operated impact device with a piston reciprocated in a cylinder.
  • the hydraulic energy for this is generated by a hydraulic pressure fluid in the cylinder, wherein the pressure change is controlled by a valve.
  • the valve is actuated between the switching positions by means of triggering openings, which are opened and closed by means of a rod with recesses.
  • the rod connects the piston with a striking tool, such as a ram.
  • the movement of the piston has a working and a Leerhub.
  • the waves carrying the imbalances must be dimensioned correspondingly large to minimize deflection, resulting in a corresponding size of such a Rüttelzelle. Due to the heavy mechanical load, the gears must be manufactured with high strength and surface quality. Furthermore, the life of the bearings is limited by the strong dynamic load.
  • a percussion hammer with a hydraulically driven percussion piston known.
  • the percussion piston is mounted linearly displaceable in a piston housing, in which open control lines for supply and discharge of hydraulic fluid.
  • the hydraulic fluid is supplied and removed in a controlled manner via these lines, so that the percussion piston is set in an oscillating motion.
  • the percussion piston points with its impact surface out of the piston housing. Due to the oscillating movement of the Impact pistons may be impacted to a back end of a drill string via the impact surface so that percussion drilling can be performed.
  • the invention has for its object to provide a harrow and a method for introducing a working element in the ground, in which vibrations effectively and as gently as possible be transferred to the working element.
  • the soil cultivation device is characterized in that the vibration generator has at least one oscillating piston which is mounted in a housing linearly displaceable and spaced from the working element, the oscillating piston is driven to oscillate in order to generate vibrations and that the vibrations can be transmitted to the working element via the housing.
  • a basic idea of the invention can be seen in arranging the oscillatingly driven piston in a closed housing.
  • the vibration transmission takes place indirectly via the housing.
  • Unlike a hydraulic percussion hammer creates no impact contact between metal parts, so that in the invention significantly less noise is given.
  • the inertia of the mass to be accelerated within the vibrator is inherently very low, so that a possible resonance range can be traversed comparatively very quickly.
  • Rotatable components and vulnerable seals between housing and piston can be omitted.
  • the components used are simple and robust, so that they are very well suited for site conditions.
  • the device can be made very compact overall.
  • a particularly high vibration energy can be generated according to the invention in that the oscillating piston is hydraulically driven.
  • a hydraulic pressure generator is located on most civil engineering machines, which are used for earth or rock processing.
  • the oscillating piston has a first piston surface and a second piston surface, of which at least one with changing Pressure is applied.
  • an almost arbitrary oscillating movement of the oscillating piston can be set, which preferably has a sinusoidal, harmonic path-time profile.
  • the pressurization can be effected by an equal high pressure, which is alternately exerted on the opposite piston surfaces.
  • a constant pressure can be exerted on a piston surface, while an up-and-down pressure is exerted on the opposite piston surface in order to generate the oscillating movement of the oscillating piston.
  • the size of the two piston surfaces can be identical. Depending on the adjustable pressure ratios, however, a different area ratio of the two piston surfaces, approximately 2: 1 can be provided. This allows an even freer adjustment of the oscillation behavior of the oscillating piston.
  • a simple and robust control according to the invention can take place in that the oscillating piston is designed as a primary control piston, with which the alternating pressurization is controllable. The control is done so to speak "own excited".
  • the oscillating piston is formed with control edges, which form the function of a first control piston. Depending on the position of the oscillating piston can thus be carried out an automatic reversal of the pressurization.
  • Such control of an oscillating piston is already known in principle from the operation of the percussion piston in the hydraulic impact hammers of the prior art.
  • a control device is provided, with which the movement of the oscillating piston is controllable.
  • a control device which may have, for example, an outer control valve, the control of the oscillating piston is, so to speak, "foreign-excited".
  • the control device comprises an electronic control unit for controlling or regulating the supply and discharge of the pressurized fluid in order to set a desired oscillation behavior of the oscillating piston.
  • the control device can also have a secondary control piston, by which a pressure fluid is switched alternately.
  • the working element may be according to the invention, a sheet pile or a pile, which is rammed directly into the ground.
  • the housing of the vibration generator is fastened to a tensioning device for holding the working element.
  • the generated vibration can be transmitted via the housing and the clamping device directly to the working element.
  • the housing of the vibrator is arranged on a drive housing of a drill drive and that the working element is designed as a drilling tool.
  • the housing of the vibrator is arranged on a drive housing of a drill drive and that the working element is designed as a drilling tool.
  • the processing element has a carriage for receiving the working element, which is movably mounted on a guide.
  • a carriage for receiving the working element which is movably mounted on a guide.
  • an additional force can be exerted on the working element via the carriage in order to drive this into the ground.
  • the force for driving the working element into the ground can be applied solely by the oscillatory movements in combination with the weight of the working element and the associated carriage.
  • the carriage may be guided on a mast or broker, which is attached, for example, to a superstructure of a construction vehicle.
  • a particularly low-vibration arrangement is inventively achieved in that the working element is mounted elastically relative to the carriage.
  • an elastic bearing may be provided on the clamping device or the drill drive.
  • the working element is suspended elastically on the carriage via the housing of the vibration generator. This ensures that the vibrations are transmitted largely undisturbed to the working element, while the carriage and the associated parts of the processing device remain free of vibration as possible.
  • the oscillating piston has a through bore.
  • the through bore allows quick venting of the cylinder chambers.
  • the inventive method is characterized in that the vibrations with at least one oscillating piston be produced, which is linearly displaceable in a housing and spaced from the working element, that the oscillating piston is driven to oscillate oscillating and that the vibrations are transmitted through the housing to the working element.
  • This method can be carried out in particular by the previously described soil cultivation device according to the invention, with the advantages described above resulting.
  • Underground is not only the soil but also rocks, for example, by rock walls to understand.
  • the vibration generation can be generated with one or more oscillating piston, which are connected in parallel.
  • This method is inventively further developed in that a drilling tool is used as the working element, which is driven in rotation, and that the vibrations are transmitted in the drilling direction to the drilling tool. Due to the oscillation of the drill string according to the invention, the frictional forces in the interface with the surrounding soil can be reduced. This leads to a considerably faster drilling progress.
  • the use of the method according to the invention is particularly advantageous when overlay drilling light overlay floors where the impact of a conventional hydraulic chamber is hardly useful.
  • a tracked vehicle 12 with an operating unit 14 is provided. Via a lever mechanism 16, a mast 18 can be brought into a desired position, in which this can be placed with a provided at the lower end clamping and release device 17 on the soil to be processed.
  • the mast 18 has a linear guide 19, along which a carriage 20 is movable via a drive, not shown.
  • a drill drive 60 is fixed, which can drive a designed as a drill pipe work element 5 rotating.
  • a vibration generator 40 is mounted, with which generates vibrations according to the invention and can be transmitted during drilling over the drill drive 60 to the working element 5.
  • Fig. 2 the drill drive 60 is shown with the vibration generator 40 in an enlarged view.
  • the carriage 20 which is mounted linearly displaceable on the guide 19 of the mast 18.
  • the working element 5 designed as a drill rod is rotationally driven about the drilling axis 7 via a gear transmission.
  • a housing 44 of the vibrator 40 is flanged to the drive housing 62.
  • the housing 44 consists of a base housing 45, which is closed by a cover 46.
  • the housing 44 encloses a cylinder space in which a oscillating piston 42 is mounted linearly displaceable along a piston axis 43.
  • the piston axis 43 is aligned with the drilling axis 7 of the working element 5 to be driven.
  • the oscillating piston 42 has two cylindrical shoulders which, at their outer sides facing the free ends, form a first piston surface 48 and a second piston surface 49, respectively.
  • the two piston surfaces 48, 49 in each case close off an adjacent pressure chamber, into which a pressure fluid can be alternately supplied and removed via pressure lines in order to set the oscillating piston 42 into a desired oscillating or reversing linear movement.
  • a control device 30 is provided with an additional control piston 32 in the illustrated embodiment, which with the leading into the cylinder chamber control lines and the oscillating piston 42 provided control edges a own excited Pressure change causes.
  • Such a self-excited control of an oscillating piston is already known in principle from the prior art in hydraulic hammers, so that this control does not need to be described in detail.
  • FIG. 3 shows an alternate form of the vibrator 40 of FIG. 2. While the first piston surface 48 and the second piston surface were the same in the vibrator 40 of FIG. 2, in the embodiment of FIG. 3, the second piston surface 49 is twice as large In addition, only two pressure lines 1 and 2 open into the housing 44.
  • the control device may be electrically or hydraulically actuated valves, which are not shown in greater detail.
  • the embodiment of Fig. 3 is formed according to the embodiment of Fig. 2.
  • the embodiment in FIG. 3 can also be set in self-excited oscillations with the control shown in FIG.
  • the pressure profile at the pressure ports 1 and 2 is shown schematically.
  • a constant pressure can be applied to the pressure port 1
  • a changing over time Pressure is applied, so that the desired oscillating movement of the oscillating piston 42 is generated.
  • a vibration of the housing 44 is effected, which transmits to the drive housing 62 via the annular, coaxial to the piston axis contact surface.
  • the vibrations are transmitted to the working element 5, so a rotational movement of a drill string with axial vibrations can be superimposed.
  • a vibration generator 40 is used, as has already been described in the embodiment of FIG. 2.
  • the vibration generator 40 is rigidly connected to a tensioning device 50 via a flange element 22.
  • the tensioning device 50 is designed to hold a sheet pile screed. Attached to a vertically movable carriage can be rammed or shaken by means of the processing device 10 shown a sheet pile wall in the ground.
  • a preferred suspension of the vibrator 40 on the carriage 20 is shown.
  • a housing 24 is fixed, in which the vibration generator 40 is suspended elastically via rubber bearings 26.
  • the rubber bearings 26 are formed with a metallic inner and a metallic outer attachment. Between these two metallic, preferably annular fasteners is an elastic rubber compound, which avoids excessive transmission of vibrations from the vibrator 40 to the housing 24 and the carriage 20 connected thereto. This ensures that the majority of the vibration energy can be transferred to the work element 5 to be introduced into the soil.

Claims (13)

  1. Dispositif de travail du sol pour introduire un élément de travail (5) dans le sol en utilisant des vibrations, avec un générateur (40) de vibrations qui est conformé pour produire et transmettre des vibrations à l'élément de travail (5), le générateur de vibrations (40) présentant au moins un piston oscillant (42) qui est mobile de manière rectiligne dans un boîtier (44) et qui est entraîné de manière oscillante pour produire des vibrations,
    caractérisé
    - en ce que le piston oscillant (42) est monté à distance de l'élément de travail (5) sans contact de percussion, et
    - en ce que l'élément de travail (5) est monté sur le boîtier (44) et les vibrations peuvent être transmises indirectement à l'élément de travail (5) par l'intermédiaire du boîtier (44).
  2. Dispositif de travail du sol selon la revendication 1, caractérisé en ce que le piston oscillant (42) est entraîné hydrauliquement.
  3. Dispositif de travail du sol selon la revendication 1 ou 2, caractérisé en ce que le piston oscillant (42) comprend une première surface (46) de piston et une deuxième surface (48) de piston, dont au moins l'une peut être chargée avec une pression variable.
  4. Dispositif de travail du sol selon la revendication 3, caractérisé en ce que les surfaces (46, 48) de piston présentent des tailles différentes.
  5. Dispositif de travail du sol selon l'une quelconque des revendications 1 à 4, caractérisé en ce que le piston oscillant (42) est conformé en piston de commande, avec lequel la charge de pression variable peut être commandée.
  6. Dispositif de travail du sol selon l'une quelconque des revendications 1 à 4, caractérisé en ce qu'il est prévu un dispositif de commande avec lequel le mouvement du piston oscillant (42) peut être commandé.
  7. Dispositif de travail du sol selon l'une quelconque des revendications 1 à 6, caractérisé en ce que le boîtier (44) du générateur de vibrations (40) est placé sur un dispositif de serrage (50) destiné à maintenir l'élément de travail (5).
  8. Dispositif de travail du sol selon l'une quelconque des revendications 1 à 6, caractérisé
    en ce que le boîtier (44) du générateur de vibrations (40) est placé sur un boîtier (62) d'entraînement d'un entraînement (60) de forage et
    en ce que l'élément de travail (5) est conformé en outil de forage.
  9. Dispositif de travail du sol selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu' un chariot (20) est prévu pour recevoir l'élément de travail (5), chariot qui est monté mobile sur un élément de guidage (19).
  10. Dispositif de travail du sol selon la revendication 9, caractérisé en ce que l'élément de travail (5) est monté élastiquement par rapport au chariot (20).
  11. Dispositif de travail du sol selon l'une quelconque des revendications 1 à 10, caractérisé en ce que le piston oscillant (42) présente un perçage continu (47).
  12. Procédé pour introduire un élément de travail (5) dans le sol, en particulier au moyen d'un dispositif de travail du sol (10) selon l'une quelconque des revendications 1 à 11, dans lequel des vibrations sont produites et transmises à l'élément de travail (5) lors de son introduction dans le sol, les vibrations étant produites avec au moins un piston oscillant (42) qui est mobile de manière rectiligne dans un boîtier (44) et qui est entraîné de manière oscillante pour produire des vibrations,
    caractérisé
    - en ce que le piston oscillant (42) est monté et entraîné à distance de l'élément de travail (5) et sans contact de percussion, et
    - en ce que l'élément de travail (5) est maintenu sur le boîtier (44), les vibrations étant transmises indirectement à l'élément de travail (5) par l'intermédiaire du boîtier (44).
  13. Procédé selon la revendication 12, caractérisé
    en ce qu' on utilise comme élément de travail un outil de forage qui est entraîné en rotation, et
    en ce que les vibrations sont transmises à l'outil de forage dans la direction de forage.
EP05016121A 2004-09-01 2005-07-25 Outil de travail du sol et procédé pour introduire un élément de travail dans le sol Not-in-force EP1632637B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004042369A DE102004042369A1 (de) 2004-09-01 2004-09-01 Bodenbearbeitungsgerät und Verfahren zum Einbringen eines Arbeitselementes in den Boden

Publications (2)

Publication Number Publication Date
EP1632637A1 EP1632637A1 (fr) 2006-03-08
EP1632637B1 true EP1632637B1 (fr) 2007-10-03

Family

ID=35219453

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05016121A Not-in-force EP1632637B1 (fr) 2004-09-01 2005-07-25 Outil de travail du sol et procédé pour introduire un élément de travail dans le sol

Country Status (5)

Country Link
US (1) US7422073B2 (fr)
EP (1) EP1632637B1 (fr)
AT (1) ATE374878T1 (fr)
DE (2) DE102004042369A1 (fr)
ES (1) ES2294603T3 (fr)

Families Citing this family (12)

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ATE433041T1 (de) * 2005-12-09 2009-06-15 Bauer Maschinen Gmbh Bodenbearbeitungsgerät
SE529619C2 (sv) * 2006-02-22 2007-10-09 Atlas Copco Rock Drills Ab Anordning vid bergborrning
US20080000662A1 (en) * 2006-06-30 2008-01-03 Tyer Robert C Chain driven reciprocating hammer with automatic work piece input centering and clamping
US20080129029A1 (en) * 2006-12-05 2008-06-05 Holte Ardis L Extensible equipment mast
US7640998B2 (en) * 2007-03-06 2010-01-05 Howell Jr Richard L Excavation apparatus
NZ554256A (en) * 2007-03-29 2009-11-27 Flexidrill Ltd Drive vibrational drilling
SE532413C2 (sv) * 2008-05-09 2010-01-12 Atlas Copco Rock Drills Ab Mataranordning
US7905299B2 (en) * 2008-09-18 2011-03-15 Longyear Tm, Inc. Articulation assembly for moving a drill mast
US7770668B2 (en) 2008-09-26 2010-08-10 Longyear Tm, Inc. Modular rotary drill head
US8118113B2 (en) 2009-03-26 2012-02-21 Longyear Tm, Inc. Hydraulic control system for drilling systems
US8096733B2 (en) * 2009-07-10 2012-01-17 Hercules Machinery Corporation Apparatus for inserting sheet pile having an independently adjustable insertion axis and method for using the same
US9394664B2 (en) * 2013-03-12 2016-07-19 Brooke Erin Desantis Hydraulic breaker hammer casing assembly for pile driving

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Also Published As

Publication number Publication date
US7422073B2 (en) 2008-09-09
ES2294603T3 (es) 2008-04-01
US20060042811A1 (en) 2006-03-02
EP1632637A1 (fr) 2006-03-08
DE102004042369A1 (de) 2006-07-13
ATE374878T1 (de) 2007-10-15
DE502005001606D1 (de) 2007-11-15

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