EP0951949A1 - Verfahren und Vorrichtung zum Antreiben eines Objektes - Google Patents

Verfahren und Vorrichtung zum Antreiben eines Objektes Download PDF

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Publication number
EP0951949A1
EP0951949A1 EP99201235A EP99201235A EP0951949A1 EP 0951949 A1 EP0951949 A1 EP 0951949A1 EP 99201235 A EP99201235 A EP 99201235A EP 99201235 A EP99201235 A EP 99201235A EP 0951949 A1 EP0951949 A1 EP 0951949A1
Authority
EP
European Patent Office
Prior art keywords
weights
pair
motors
liquid flow
hydraulic
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.)
Withdrawn
Application number
EP99201235A
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English (en)
French (fr)
Inventor
Johan Bernard Van Randen
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.)
International Construction Equipment BV
Original Assignee
International Construction Equipment BV
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 International Construction Equipment BV filed Critical International Construction Equipment BV
Publication of EP0951949A1 publication Critical patent/EP0951949A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • 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

Definitions

  • the invention relates to a method for vibratory driving of an object, in particular a pile, sheet piling or other object for introducing into or removing from the ground, wherein the object is fixed to a vibrating device, in which device a first pair of eccentric rotatable weights is driven by a first hydraulic motor and a second pair of eccentric rotatable weights is driven by a second hydraulic motor, wherein the weights of each pair are rotated at equal angular speed in mutually opposed directions and thereby generate an alternating force in substantially one direction, wherein the difference in phase between the alternating forces generated by the first pair and the second pair is changed in order to control the intensity of the resultant vibration, wherein both motors are displacement motors, the rotation speed of which is proportional to the liquid flow through the motor.
  • Liquid flow is here understood to mean the amount of liquid which passes through per time unit, which is also referred to as the concept of flow rate or the concept of flow volume.
  • the weights of each pair are arranged on two mutually meshing toothed wheels.
  • Each pair of weights exerts on the device an alternating force acting in one direction and, because the alternating forces are generated by each of the pair of weights in the same direction, the alternating forces cause a vibration of the device in this same direction.
  • the frequency of the alternating forces of each of the pairs is the same, a continuous vibration will be caused, the intensity of which depends on the phase difference of the two alternating forces. This phase difference can be varied in order to control the intensity.
  • phase difference of the alternating forces exerted by the two pairs of rotating weights is controlled by means of a phase shifter which can adjust the mutual rotation position of two coaxial toothed wheels. Because each of the two toothed wheels engages with a pair of weights, the phase difference of these pairs of weights can be adjusted.
  • phase shifter is a complicated apparatus, the whole of which is in rotation and which is moreover subject to vibrations generated by the vibrating device.
  • phase shifter is therefore a component of the vibrating device which is susceptible to malfunction.
  • the invention has for its object to provide a method and a device for setting an object into vibration, wherein the intensity of the vibration can be controlled in efficient and reliable manner.
  • control means for changing the phase difference between the pairs of weights which can temporarily change the ratio of the liquid flow to each of the motors.
  • the rotation speed of each of the pairs of weights can individually be precisely controlled by varying the liquid flow to the relevant motor. This variation of the liquid flow can take place outside the vibrating device, wherein the desired liquid flow can be guided to each of the hydraulic motors by means of a flexible conduit.
  • Both hydraulic motors can herein be driven by one hydraulic pump, wherein a difference in the liquid flows to each of the motors is brought about by limiting the liquid flow to at least one of the hydraulic motors by means of an adjustable throttle valve.
  • liquid flow to each of the hydraulic motors is individually controlled. This can take place by dividing the liquid supply into two liquid flows by means of a hydraulic distributor, this in a determined ratio.
  • the phase difference between the pairs of weights can herein be controlled by altering the ratio.
  • liquid flow to each of the two hydraulic motors is effected by a separate liquid pump for each motor.
  • the two liquid pumps can herein be separately adjusted in order to cause each to bring about a determined liquid flow.
  • the rotation speed of each pump can for instance be controlled.
  • the ratio of the liquid flows to the first and the second hydraulic motor is changed by an additional hydraulic pump which effects a liquid flow between the feed conduits to the first and second hydraulic motor.
  • an additional hydraulic motor can carry liquid from the one feed conduit to the other feed conduit, whereby a phase shift of the one pair of weights relative to the other pair of weights can be brought about.
  • first pair of weights and the second pair of weights can be mechanically connected to and disconnected from each other such that the pairs of weights are fixed in different rotation positions relative to each other.
  • An adjusted phase difference between the pairs of weights can hereby be retained, wherein both hydraulic motors can be utilized at full power.
  • a mechanical clutch can be a plate clutch wherein the plates are pressed against each other under spring pressure and the clutch can be released by moving the clutch plates apart counter to the spring pressure.
  • a clutch is known.
  • a clutch is preferably applied wherein the two pairs of weights can be mutually coupled in a number of positions relative to each other, so that the intensity of the vibration of the device can be adjusted at a number of predetermined levels.
  • the intensity of the vibration of the device can be controlled by monitoring the vibrating device and/or the object set into vibration and, subject to this monitoring, adjusting the liquid flows to the two hydraulic motors.
  • the vibrating device can herein be started in the situation where the alternating forces counteract each other so that there is no resultant vibration. A phase difference is then effected between the pairs of weights, this to a degree where the desired vibration effect is achieved.
  • the liquid flows to hydraulic motors are controlled on the basis of the detection by detection means of the rotation position of at least one of the pairs of weights. It is herein possible for instance to detect at which moments in time each of the pairs of weights passes a determined rotation position, wherein the maximum intensity of the vibration is present when the same rotation position for both pairs of weights is detected simultaneously, while no resultant vibration is present when the moments in time at which the one pair of weights and the other pair of weights pass the same rotation position have equal intervals.
  • FIGS 1, 2 and 3 are schematic views of the three embodiments, wherein corresponding components are designated with the same reference numerals. For the sake of clarity parts which are of lesser importance for explanation of the invention are omitted.
  • Figure 1 shows a hydraulic pump 1 which pumps hydraulic fluid from a reservoir 2 to both a first hydraulic motor 3 and a second hydraulic motor 4.
  • First hydraulic motor 3 is connected drivably to a pair of eccentric rotatable weights 5,6
  • second hydraulic motor 4 is connected drivably to the pair of eccentric rotatable weights 7,8.
  • Weights 5,6;7,8 of each pair of weights are mounted on toothed wheels, which toothed wheels are mutually meshed such that the weights rotate in the direction as indicated by arrows 9.
  • the difference in phase between the pairs of weights is adjusted by controlling the liquid flow to each of the motors 3,4.
  • this control takes place by means of two adjustable throttle valves 10,11.
  • Throttle valve 10 can limit the liquid feed to motor 3 and throttle valve 11 can limit the liquid feed to motor 4.
  • Throttle valves 10,11 are controlled by means of control unit 12, this on the basis of detection of the actual rotation position of the pairs of weights and the desired phase difference between the two pairs of weights.
  • Control unit 12 determines the phase difference of the pairs of weights on the basis of these detections and, subject to the desired phase difference which is made known to control unit 12 as information 15, control unit 12 drives one of the throttle valves 10,11 into a throttling position until the desired phase difference is obtained.
  • Throttle valve 10 can herein limit the liquid feed in conduit 16 to motor 3 and throttle valve 11 can limit the liquid feed via conduit 17 to motor 4. The liquid can flow back to reservoir 2 via conduit 18.
  • FIG. 1 further shows schematically a mechanical clutch 19 which can couple the two pairs of weights 5,6;7,8 mechanically such that an adjusted phase difference remains constant.
  • clutch 19 can be disengaged for a short time, wherein a change in the phase difference can be effected by temporarily limiting a liquid flow with throttle valve 10 and/or throttle valve 11.
  • both throttle valves 10,11 can be placed in a non-throttling position, whereby the two motors 3,4 can rotate at maximum power.
  • Clutch 19 can be used either in combination with control unit 12 or not.
  • FIG. 2 shows an embodiment wherein motor 3 is driven by pump 25 and wherein hydraulic motor 4 is driven by pump 26.
  • the liquid flows through conduits 16 and 17 to motors 3 and 4 can be controlled by regulating the rotation speed of pump 25 respectively pump 26, at least when the pumps as well as the motors are of the so-called displacement type, wherein the rotation speed is proportional to the liquid flow passing through.
  • At least one of the pumps 25,26 can also be embodied as pump which can pump an adjustable volume at a constant rotation speed. Both pumps 25,26 can then be driven at the same rotation speed.
  • at least one of the motors 3,4 is embodied as a motor with a rotation speed which can be adjusted at a constant flow volume.
  • FIG. 3 shows an embodiment wherein two pumps 25,26 are likewise present and wherein a pump 27 is moreover present which is placed between feed conduit 16 of pump 3 and feed conduit 17 of pump 4.
  • Pump 27 can pump liquid in two directions so that the ratio of the liquid flow sent to hydraulic motors 3,4 can be changed as required.
  • Pump 27 can also be embodied such that it can only pump liquid in one direction, and in that case the phase difference between the pairs of weights 5,6;7,8 can be adjusted by causing one of the two motors 3,4 to run faster than the other motor 4,3 for a short time.
  • pumps 25 and 26 can also be replaced by a single pump, wherein a flow distributor downstream of this pump divides the pumped liquid into two equal liquid flows to conduit 16 and conduit 17.
  • control unit 12 is also present for driving pump 27 subject to the detections by detectors 13,14 and the desired phase difference 15 required.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
EP99201235A 1998-04-22 1999-04-22 Verfahren und Vorrichtung zum Antreiben eines Objektes Withdrawn EP0951949A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1008965A NL1008965C2 (nl) 1998-04-22 1998-04-22 Werkwijze en inrichting voor het trillend aandrijven van een voorwerp.
NL1008965 1998-04-22

Publications (1)

Publication Number Publication Date
EP0951949A1 true EP0951949A1 (de) 1999-10-27

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Family Applications (1)

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EP99201235A Withdrawn EP0951949A1 (de) 1998-04-22 1999-04-22 Verfahren und Vorrichtung zum Antreiben eines Objektes

Country Status (2)

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EP (1) EP0951949A1 (de)
NL (1) NL1008965C2 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002042010A1 (de) * 2000-11-22 2002-05-30 Wacker Construction Equipment Ag Vorrichtung zur stufenlosen unwuchtverstellung bei lenkbaren vibrationsplatten
NL1025763C2 (nl) * 2004-03-18 2005-09-20 Presign B V Fundeersysteem voor het door trillen in de grond brengen van funderingselementen.
EP2085149A1 (de) * 2008-01-29 2009-08-05 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserzeuger für ein Vibrationsrammgerät
EP2085148A1 (de) * 2008-01-29 2009-08-05 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserzeuger für ein Vibrationsrammgerät
CN101864772A (zh) * 2010-06-24 2010-10-20 河海大学常州校区 一种自动调节偏心力矩和打击频率的振动打桩头
EP2557233A1 (de) * 2011-08-12 2013-02-13 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Arbeitsgerät mit hydraulischem Antrieb für Tiefbauarbeiten
DE102013020690A1 (de) * 2013-12-03 2015-06-03 Bomag Gmbh Schwingungserreger für einen Vibrationsverdichter sowie Baumaschine mit einem solchen Schwingungserreger
EP3243573A1 (de) 2016-05-09 2017-11-15 Eurodrill GmbH Schwingungserzeuger

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481835A (en) * 1981-10-28 1984-11-13 Dynapac Maskin Ab Device for continuous adjustment of the vibration amplitude of eccentric elements
WO1991008842A2 (de) * 1989-12-20 1991-06-27 GEDIB Ingenieurbüro und Innovationsberatung GmbH Vorrichtung zur schwingungserregung
EP0524056A1 (de) * 1991-07-15 1993-01-20 Procedes Techniques De Construction Schwingungserreger mit einstellbarer Unwucht, insbesondere zum Eintreiben von Gegenständen in den Boden

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481835A (en) * 1981-10-28 1984-11-13 Dynapac Maskin Ab Device for continuous adjustment of the vibration amplitude of eccentric elements
WO1991008842A2 (de) * 1989-12-20 1991-06-27 GEDIB Ingenieurbüro und Innovationsberatung GmbH Vorrichtung zur schwingungserregung
EP0524056A1 (de) * 1991-07-15 1993-01-20 Procedes Techniques De Construction Schwingungserreger mit einstellbarer Unwucht, insbesondere zum Eintreiben von Gegenständen in den Boden

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7017679B2 (en) 2000-11-22 2006-03-28 Wacker Construction Equipment Ag Device for the continuous adjustment of unbalance of steerable vibration plates
WO2002042010A1 (de) * 2000-11-22 2002-05-30 Wacker Construction Equipment Ag Vorrichtung zur stufenlosen unwuchtverstellung bei lenkbaren vibrationsplatten
NL1025763C2 (nl) * 2004-03-18 2005-09-20 Presign B V Fundeersysteem voor het door trillen in de grond brengen van funderingselementen.
US8522891B2 (en) 2008-01-29 2013-09-03 ABI Anlangentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Vibration generator for a vibration pile driver
EP2085149A1 (de) * 2008-01-29 2009-08-05 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserzeuger für ein Vibrationsrammgerät
EP2085148A1 (de) * 2008-01-29 2009-08-05 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserzeuger für ein Vibrationsrammgerät
US7870910B2 (en) 2008-01-29 2011-01-18 Abi Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik Und Vertriebsgesellschaft Mbh Vibration generator for a vibration pile driver
CN101864772A (zh) * 2010-06-24 2010-10-20 河海大学常州校区 一种自动调节偏心力矩和打击频率的振动打桩头
CN101864772B (zh) * 2010-06-24 2012-11-21 河海大学常州校区 一种自动调节偏心力矩和打击频率的振动打桩头
EP2557233A1 (de) * 2011-08-12 2013-02-13 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Arbeitsgerät mit hydraulischem Antrieb für Tiefbauarbeiten
US9399850B2 (en) 2011-08-12 2016-07-26 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinefabrik und Vertriebsgesellschaft mbH Device having a hydraulic drive for civil engineering
DE102013020690A1 (de) * 2013-12-03 2015-06-03 Bomag Gmbh Schwingungserreger für einen Vibrationsverdichter sowie Baumaschine mit einem solchen Schwingungserreger
EP2881516A1 (de) * 2013-12-03 2015-06-10 BOMAG GmbH & Co. OHG Bodenverdichtungsmaschine
JP2015110898A (ja) * 2013-12-03 2015-06-18 ボーマーク・ゲー・エム・ベー・ハーＢｏｍａｇ Ｇｍｂｈ 振動式締固め機のための起振装置と当該起振装置を備える建設機械
US9334613B2 (en) 2013-12-03 2016-05-10 Bomag Gmbh Vibration exciter for a vibration compactor and construction machine having such a vibration exciter
EP2881516B1 (de) 2013-12-03 2016-08-31 BOMAG GmbH & Co. OHG Bodenverdichtungsmaschine
EP2881516B2 (de) † 2013-12-03 2020-03-25 BOMAG GmbH & Co. OHG Bodenverdichtungsmaschine
EP3243573A1 (de) 2016-05-09 2017-11-15 Eurodrill GmbH Schwingungserzeuger

Also Published As

Publication number Publication date
NL1008965C2 (nl) 1999-10-25

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