EP2014835B1 - Steuersystem einer Hydraulikgruppe, die einen Vibrator mit Hydraulikflüssigkeit versorgt - Google Patents

Steuersystem einer Hydraulikgruppe, die einen Vibrator mit Hydraulikflüssigkeit versorgt Download PDF

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Publication number
EP2014835B1
EP2014835B1 EP08290636A EP08290636A EP2014835B1 EP 2014835 B1 EP2014835 B1 EP 2014835B1 EP 08290636 A EP08290636 A EP 08290636A EP 08290636 A EP08290636 A EP 08290636A EP 2014835 B1 EP2014835 B1 EP 2014835B1
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EP
European Patent Office
Prior art keywords
engine
hydraulic
vibrator
capacity factor
pump
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.)
Revoked
Application number
EP08290636A
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English (en)
French (fr)
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EP2014835A1 (de
Inventor
Guillaume Dazin
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PTC SA
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PTC SA
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Application filed by PTC SA filed Critical PTC SA
Priority to PL08290636T priority Critical patent/PL2014835T3/pl
Publication of EP2014835A1 publication Critical patent/EP2014835A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
    • B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
    • B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
    • B06B1/10—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy
    • B06B1/16—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of mechanical energy operating with systems involving rotary unbalanced masses
    • B06B1/161—Adjustable systems, i.e. where amplitude or direction of frequency of vibration can be varied
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/18—Placing by vibrating

Definitions

  • the present invention relates to a servo system of a hydraulic unit supplying hydraulic fluid to a vibrator of the type of those used for the insertion into the ground of objects, such as piles, sheet piles, or even a fusiform vibrating system. for example of the type designated by the trademark "Vibrolance” filed in the name of the Applicant.
  • “Vibrolance” is a fusiform vibrator used for soil improvement processes, such as vibro-compaction or ballast columns. It comprises a flyweight rotating at a speed of the order of 1500 to 3200 revolutions / min, so as to obtain a force in the plane perpendicular to its axis of rotation.
  • vibrators are frequently used comprising, mounted rotatably, inside a housing, one or more pairs of eccentric masses (flyweights) rotating at the same speed but in the opposite direction, so as to obtain a resultant consisting of a vertical force of sinusoidal intensity, (the horizontal components of the force being canceled).
  • threshing machines such as that described in the document US 4,534,419 which involve a moving mass linearly inside a piston and which is propelled alternately by a fluid under pressure.
  • eccentric masses are rotated, for example by hydraulic motors mounted on the housing, at speeds of the order of 1200 to 3000 rev / min.
  • the amplitude of the vibrations generated by this rotation is a function of the eccentric moment, the frequency (speed of rotation) and the total weight of the system (vibrator / stirrup / object to be driven together).
  • the moment of the vibrator can be fixed or variable.
  • the vibrator comprises at least two eccentric mass trains, each of the trains comprising at least one pair of eccentric masses rotating in opposite directions, while the two eccentric mass trains are coupled to each other by via a phase shifter.
  • phase shifter By performing the phase shift between the two trains, it is possible to vary the amplitude of the oscillations between a zero amplitude (phase opposition) and a maximum amplitude (in phase). This process is used in particular in the patent application EP 0 926 300 A1 to reduce the harmfulness of vibrations generated by the vibrator.
  • a hydraulic unit provides hydraulic energy to the vibrator motor via hydraulic hoses.
  • This hydraulic unit comprises a motor (usually a heat engine) which rotates a hydraulic pump.
  • the hydraulic power absorbed by the vibrator is very variable. It depends in particular on the depth of the plug of the object that one wants to sink as well as the geological characteristics of the ground crossed (presence of geological incidents).
  • the engine of the hydraulic unit is continuously rotated at full speed in order to permanently have a reserve of power. This results in significant fuel consumption, increased air pollution and noise pollution.
  • the object of the invention is therefore more particularly to eliminate these disadvantages.
  • a servo system comprising means for continuously adapting the speed of rotation of the engine of the hydraulic unit as a function of the energy actually consumed by the vibrator, this system involving a measuring device.
  • the load ratio of the engine of the hydraulic unit means being provided to ensure a continuous adjustment of the rotational speed of the engine according to the measured load rate.
  • variable displacement pump Furthermore, to compensate for flow variations due to engine speed variations, it is possible to use a variable displacement pump.
  • the system may then include means for continuously adjusting the displacement of this pump so as to obtain the necessary flow (set point).
  • a vibrator 1 of the conventional type suspended from the hook 2 of a hoist by means of a suspension stirrup 3.
  • This vibrator 1 is used to effect the driving of a sheet pile 4.
  • the connection between the housing of the vibrator 1 and the sheet pile 4 is provided by a hydraulic clamp 5.
  • the eccentric masses of the vibrator 1 are rotated by at least one hydraulic motor 6 supplied with pressurized hydraulic fluid coming from a hydraulic unit 7 involving a hydraulic pump 8 with variable flow controlled by an actuator allowing a continuous adjustment of the displacement of the pump 8 and a motor 9 for rotating the pump 8.
  • the connection between the pump 8 and the motor 6 of the vibrator 1 is effected by means of two flexible ducts, namely a duct high pressure supply 10 and a return duct to the tank 11, low pressure.
  • the engine 9 here consists of a heat engine equipped with a device for measuring the engine load ratio (that is to say the ratio of power used / available power). It must also be equipped with a controlled command of its speed of rotation.
  • the hydraulic unit 7 / vibrator 1 assembly has been schematically represented by a block 20 in the diagram of FIG. figure 2 .
  • this solution consists in simultaneously slaving two actuators (pump flow and rotation speed of the engine) of the same process according to two separate parameters (respectively vibration frequency and the load ratio of the engine).
  • the frequency sensor may be replaced by a hydraulic flow sensor placed between the pump 8 and the vibrator 1: the vibratory frequency is a function of the flow, the result is substantially the same.
  • the senor (frequency 16 or flow) can be removed and replaced by means performing a theoretical calculation of flow, from the pump displacement control and the speed of rotation of the engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Operation Control Of Excavators (AREA)
  • Reciprocating Pumps (AREA)
  • Vehicle Body Suspensions (AREA)
  • Feedback Control In General (AREA)

Claims (12)

  1. Steuersystem einer Hydraulikgruppe (7), umfassend eine Pumpe (8), die von einem Motor (9) angetrieben wird, der einen Vibrator (1) oder ein vibrierendes System mit Hydraulikflüssigkeit versorgt, das exzentrische Massen umfasst, die von mindestens einem hydraulischen Motor, der das Fluid aufnimmt, in Rotation versetzt werden,
    dadurch gekennzeichnet, dass es Adaptionsmittel für den Durchsatz des hydraulischen Fluids umfasst, durch die sich die Rotationsgeschwindigkeit des Motors (9) der hydraulischen Gruppe (7) als Funktion der Energie, die tatsächlich durch den Vibrator (1) verbraucht wird, kontinuierlich anpassen lässt, wobei diese Mittel eine Messvorrichtung des Ladegrads des Motors (9) der hydraulischen Gruppe und Mittel, die eine kontinuierliche Regelung der Rotationsgeschwindigkeit des Motors der Gruppe als Funktion des gemessenen Ladegrads gewährleisten, einsetzen.
  2. System nach Anspruch 1,
    dadurch gekennzeichnet, dass die hydraulischen Gruppe (7) eine Pumpe (8) mit variablem Durchsatz durch Variation ihres Hubraums umfasst und dadurch dass sie Mittel umfasst, die eine kontinuierliche Regelung des Hubraums der Pumpe (8) sicher stellen, derart, dass ein Durchsatz erhalten wird, der einem Sollwert entspricht.
  3. System nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der Vibrator (1) mit einem Frequenzsensor der Vibrationen (16) ausgestattet ist, der Motor (9) der hydraulischen Gruppe (7) ein mit einer Meßvorrichtung seines Ladegrads ausgestatteter Verbrennungsmotor ist, und die oben genannten Adaptionsmittel Steuerungsmittel umfassen, umfassend:
    o eine erste Regelschleife (B1), umfassend einen Subtrahierer (21), der dazu dient, einen ersten Unterschied zwischen der durch den Frequenzsensor (16) gemessenen Frequenz und einer Sollfrequenz (C1) zu messen, und einen Frequenzkompensator (22), der auf die Regelungsmittel des Hubraums der Pumpe (8) ein Durchsatzfunktionssteuersignal des ersten Unterschieds anwendet;
    o eine zweite Regelschleife (B2), umfassend einen Subtrahierer (24), der dazu dient, einen zweiten Unterschied zwischen dem augenblicklichen Wert des durch die oben genannte Meßvorrichtung des Ladegrade gemessenen Ladegrads des Motors (9) und einem Ladegrad-Sollwert (C2) zu messen, und einen Ladegrad-Kompensator (25), der auf einen Motorgeschwindigkeitsantrieb ein Funktionssteuerungssignal des zweiten Unterschiedes anwendet.
  4. System nach Anspruch 3,
    dadurch gekennzeichnet, dass der Ladegrad-Kompensator ein von dem Freuenzkompensator (22) ausgehendes Steuersignal des Hubraum-Maximums empfängt.
  5. System nach Anspruch 3,
    dadurch gekennzeichnet, dass der oben genannte Frequenzsensor (16) durch einen zwischen der Pumpe (8) und dem Vibrator (1) angeordneten Hydraulikdurchsatz-Sensor ersetzt wird.
  6. System nach Anspruch 3,
    dadurch gekennzeichnet, dass der Ladegrad-Sollwert (C2) durch den Anwender regelbar ist.
  7. System nach Anspruch 3,
    dadurch gekennzeichnet, dass der Ladegrad-Sollwert (C2) fest ist.
  8. System nach einem der Ansprüche 3 bis 7,
    dadurch gekennzeichnet, dass die oben genannte Sollfrequenz durch den Anwender regelbar ist.
  9. System nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der oben genannte Vibrator mit statischem Moment oder mit variablem Moment ist.
  10. System nach einem der Ansprüche 1 bis 8,
    dadurch gekennzeichnet, dass das oben genannte vibrierende System spindelförmig ist.
  11. System nach einem Anspruch 4,
    dadurch gekennzeichnet, dass, wenn der gemessene Ladegrad kleiner ist als der Sollwert (C2) und die Hubraumsteuerung der Pumpe nicht maximal ist, die Regelungsmittel (14) eine Verlangsamung des Motors (9) befehlen, und wenn der gemessenen Ladegrad größer ist als der Sollwert (C2), die Regelungsmittel eine Beschleunigung des Motors befehlen.
  12. System nach Anspruch 3,
    dadurch gekennzeichnet, dass der oben genannte Frequenzsensor (16) unterdrückt ist und durch Mittel ersetzt ist, die eine theoretische Berechnung des Durchsatzes ausgehend von der Hubraumsteuerung der Pumpe (8) und der Rotationsgeschwindigkeit des Verbrennungsmotors (9) bewirken.
EP08290636A 2007-07-03 2008-06-27 Steuersystem einer Hydraulikgruppe, die einen Vibrator mit Hydraulikflüssigkeit versorgt Revoked EP2014835B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08290636T PL2014835T3 (pl) 2007-07-03 2008-06-27 System automatycznego sterowania agregatem hydraulicznym, zasilającym w czynnik hydrauliczny rodzaj wibratora

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0704783A FR2918473B1 (fr) 2007-07-03 2007-07-03 Systeme d'asservissement d'un groupe hydraulique alimentant en fluide hydraulique un vibrateur.

Publications (2)

Publication Number Publication Date
EP2014835A1 EP2014835A1 (de) 2009-01-14
EP2014835B1 true EP2014835B1 (de) 2010-06-23

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ID=39462179

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EP08290636A Revoked EP2014835B1 (de) 2007-07-03 2008-06-27 Steuersystem einer Hydraulikgruppe, die einen Vibrator mit Hydraulikflüssigkeit versorgt

Country Status (11)

Country Link
US (1) US20090007559A1 (de)
EP (1) EP2014835B1 (de)
JP (1) JP2009064419A (de)
AT (1) ATE472018T1 (de)
CA (1) CA2636657A1 (de)
DE (2) DE602008001582D1 (de)
DK (1) DK2014835T3 (de)
ES (1) ES2346273T3 (de)
FR (1) FR2918473B1 (de)
PL (1) PL2014835T3 (de)
RU (1) RU2008126963A (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101736742B (zh) * 2010-02-10 2011-04-13 湖南新天和工程设备有限公司 兼具锤贯试桩的液压动力沉桩机
KR101179241B1 (ko) 2010-10-25 2012-09-04 한국건설기술연구원 회전식 주입재 진동 주입장치
EP2557233B2 (de) 2011-08-12 2022-06-01 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Arbeitsgerät mit hydraulischem Antrieb für Tiefbauarbeiten
FR2992043B1 (fr) * 2012-06-15 2015-05-01 P T C Dispositif de couplage de groupes hydrauliques d'alimentation d'equipements hydrauliques, procede de couplage correspondant et systeme vibrant comportant un tel dispositif de couplage
DE102013103715B4 (de) * 2013-04-12 2016-12-08 Thyssenkrupp Tiefbautechnik Gmbh Verfahren zum Betrieb einer Vibrationsrammanordnung
DE102013103722B4 (de) * 2013-04-12 2016-10-13 Thyssenkrupp Tiefbautechnik Gmbh Vibrationsrammanordnung sowie Verfahren zum Betrieb der Vibrationsrammanordnung
DE102014016400B4 (de) * 2014-11-07 2019-01-17 Thyssenkrupp Ag Vibrationsrammanordnung mit integriertem Antriebsaggregat
EP3696327B1 (de) * 2019-02-15 2021-02-24 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Tiefbaugerät
CN114909362B (zh) * 2022-02-07 2023-07-14 上海大学 一种航空发动机液压管路多参数测量试验装置和方法
CN116464028B (zh) * 2023-02-03 2023-09-05 西南石油大学 一种微波-压力联合处理软弱地基的设备和方法

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DE2732934C2 (de) * 1977-07-21 1985-09-12 Bomag-Menck GmbH, 5407 Boppard Verfahren und Vorrichtung zum Rammen und Ziehen
US4320807A (en) * 1980-03-10 1982-03-23 Resonant Technology Company Resonant system support
SU1432139A1 (ru) * 1986-05-16 1988-10-23 Всесоюзный научно-исследовательский институт транспортного строительства Устройство управлени свайным вибропогружателем
FR2692523B1 (fr) * 1992-06-19 1994-10-07 Procedes Tech Construction Dispositif pour la commande d'un vibrateur à moment variable.
EP0622263B1 (de) * 1993-04-27 1998-09-16 Shimadzu Corporation Gabelstapler-Steuergerät
FR2772805B1 (fr) * 1997-12-24 2000-02-25 Procedes Tech Const Dispositif pour la commande asservie de l'amplitude des vibrations d'un vibrateur a moment variable

Also Published As

Publication number Publication date
FR2918473A1 (fr) 2009-01-09
EP2014835A1 (de) 2009-01-14
DK2014835T3 (da) 2010-10-11
CA2636657A1 (fr) 2009-01-03
JP2009064419A (ja) 2009-03-26
US20090007559A1 (en) 2009-01-08
FR2918473B1 (fr) 2009-10-30
RU2008126963A (ru) 2010-01-10
ATE472018T1 (de) 2010-07-15
PL2014835T3 (pl) 2010-11-30
ES2346273T3 (es) 2010-10-13
DE602008001582D1 (de) 2010-08-05
DE08290636T1 (de) 2009-06-04

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