EP3165290B1 - Schwingungserzeuger und verfahren zum einbringen eines rammgutes in einen boden - Google Patents

Schwingungserzeuger und verfahren zum einbringen eines rammgutes in einen boden Download PDF

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Publication number
EP3165290B1
EP3165290B1 EP15193440.3A EP15193440A EP3165290B1 EP 3165290 B1 EP3165290 B1 EP 3165290B1 EP 15193440 A EP15193440 A EP 15193440A EP 3165290 B1 EP3165290 B1 EP 3165290B1
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EP
European Patent Office
Prior art keywords
vibration
vibration generator
elements
control unit
imbalance elements
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.)
Active
Application number
EP15193440.3A
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German (de)
English (en)
French (fr)
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EP3165290A1 (de
Inventor
Sebastian Bauer
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.)
Bauer Maschinen GmbH
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Bauer Maschinen GmbH
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Filing date
Publication date
Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to EP15193440.3A priority Critical patent/EP3165290B1/de
Priority to PCT/EP2016/067919 priority patent/WO2017076525A1/de
Priority to CN201680064554.5A priority patent/CN108348960B/zh
Publication of EP3165290A1 publication Critical patent/EP3165290A1/de
Application granted granted Critical
Publication of EP3165290B1 publication Critical patent/EP3165290B1/de
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    • 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
    • B06B1/166—Where the phase-angle of masses mounted on counter-rotating shafts can be varied, e.g. variation of the vibration phase

Definitions

  • the invention relates to a vibration generator for generating a directed vibration, with at least one vibration unit, which has at least a first pair of rotatably mounted first unbalance elements, which can be driven by a first rotary drive at a first speed, according to the preamble of claim 1.
  • the invention further relates to a method for introducing a pile into a ground, in which the pile is held on a holding device of a vibration generator, which generates vibrations through which the pile is driven into the ground, according to the preamble of claim 13
  • a vibration generator which generates vibrations through which the pile is driven into the ground.
  • Such vibration generators which are also known as vibrating bears, have unbalance elements that are driven in rotation. These are usually driven in opposite directions in pairs. In this way, vertically directed force effects can be achieved, while transverse forces cancel each other out due to the opposing drive. With these conventional vibration generators, an additional static load is necessary to drive a pile into the ground.
  • vibration generators which are designed for directional vibration and do not require any additional load.
  • These known vibration generators for directed vibration have unbalance elements with different unbalances.
  • the unbalance elements with smaller unbalances are driven to rotate several times faster than the unbalance elements with the larger unbalances.
  • a pronounced force effect preferably downwards, can be generated.
  • the different speeds are achieved in that the unbalance elements mesh with one another via gears with different numbers of teeth and are driven in rotation by a rotary drive.
  • vibration generators Another known problem with vibration generators is passing through a resonance frequency range. This can result in considerably increased amplitudes, which lead to damage to the bearings of the vibration generator or to the construction as a whole. Particularly when a vibration generator is used in inner city areas, resonance vibrations can lead to damage to adjacent structures.
  • the U.S. 5,911,280 discloses a vibration generator with a pair of unbalanced masses of identical design, which are each arranged on a shaft and are driven via separate rotary drives which are driven by the same hydraulic source.
  • the U.S. 5,984,107 discloses a vibration drive consisting of two shafts on which two unbalanced masses are arranged.
  • the shafts each have a drive, the shafts being connected to one another via a coupling belt to provide synchronous rotation.
  • the EP 2 789 402 A1 teaches a vibration exciter with two mutually parallel shafts and at least two unbalanced masses which are attached to one or more of the shafts, a swivel motor for adjusting the relative rotational position of the unbalanced masses to each other is arranged, comprising a swivel motor shaft and a swivel motor housing, the swivel motor shaft being part of a of the shafts and the rotational position of the swivel motor housing can be changed relative to the swivel motor shaft, the swivel motor being arranged axially offset in such a way that it is arranged outside the area swept by the unbalanced masses.
  • the shafts with the unbalanced masses are mechanically coupled to one another.
  • the EP 1 481 739 A1 relates to a vibration device which is formed with two pairs of unbalanced masses of identical design.
  • the two pairs of unbalanced masses are designed to be drivable via separate rotary drives.
  • the drives are designed, in particular, to ensure a synchronous rotational speed of the two unbalanced pairs with one another and to set the relative position of the unbalanced pair masses to one another.
  • a generic vibration generator is from US 2009/0241704 A1 known.
  • the pairs of unbalance elements are mechanically coupled via meshing gears.
  • the invention is based on the object of specifying a vibration generator and a method for introducing a pile into a soil, with which a particularly efficient and gentle operation is made possible.
  • a basic idea of the invention consists in providing at least two pairs of unbalance elements that are mechanically decoupled from one another in a vibration generator for generating a directed vibration. These are each driven to rotate by at least one dedicated rotary drive. There is no provision for mechanical coupling between the two pairs of imbalances by means of intermeshing gears. Rather, the rotational speeds are coordinated with one another in electrical and / or hydraulic ways via a control unit.
  • the term “electrical control unit” is to be interpreted broadly and also includes electronic control components. With this control unit and the drive-related decoupling of the at least two pairs of unbalance elements, the respective speeds can be set differently. In this way, passing through critical frequency ranges can be avoided or at least significantly shortened.
  • the pairs of unbalance elements have at least two, three or more unbalance elements, each with one unbalance. The unbalance elements of a pair rotate in the opposite direction of rotation.
  • a preferred embodiment of the invention consists in that the second speed of the second unbalance elements is a multiple of the first speed of the first unbalance elements.
  • the two sine curves of the rotating unbalance elements can be superimposed, the period of the sine curve of the first unbalance elements being a multiple of the period of the sine curve of the second unbalance elements.
  • a directed oscillation can be generated by this superposition.
  • the maximum of the superimposed vibration is directed downwards.
  • ramming material is pulled, a pronounced force effect can be generated upwards.
  • the driving in of piling material can in principle be carried out without additional load or tensile force. According to the invention, however, it is not excluded that, in addition to the directional oscillation, a corresponding Push and pull device an additional force is exerted on the vibration generator and thus on the pile.
  • the vibration generator can be formed from two or more differently constructed vibration units.
  • only one oscillation unit can be provided with first and second unbalance elements, while a second oscillation unit is only provided with unbalance elements of the same design.
  • Two or more oscillation units are preferably arranged, which are controlled via a common control unit.
  • a preferred embodiment of the invention can consist in that the first oscillation unit is designed in the same way as the second oscillation unit.
  • the two or more vibration units have the same structure with first and second unbalance elements.
  • the first unbalance elements have a first unbalance and thus a first static moment, which differs from a second unbalance and a corresponding second static moment of the second unbalance elements.
  • control unit is connected to at least one first sensor device, by means of which the first speed of the first unbalance elements and / or the second speed of the second unbalance elements can be determined.
  • the term control unit in the context of the invention is to be understood in general terms and can also include regulation.
  • the sensor device can in particular be an optical, inductive, capacitive or other rotary pick-up.
  • each vibration unit can be provided with one or more sensor devices. A particularly simple embodiment is given by the fact that a sensor device is only provided on one vibration unit.
  • control unit is connected to the first rotary drive and / or the second rotary drive, the control unit being able to set and change the first speed and / or the second speed.
  • the rotary drives can be electric drives or preferably hydraulic drives. An operator can thus set a suitable speed on the rotary drives. The speed can also be set automatically or semi-automatically by selecting a program.
  • the control unit can have a corresponding database in which corresponding control programs and speed specifications are stored.
  • each vibration unit can have more than two rotary drives.
  • a vibration unit typically has two individual rotary drives.
  • it is preferred that several unbalance elements of a vibration unit are connected via intermeshing drive gears and are driven to rotate. If the unbalance elements of a pair are driven at the same speed, the gears have the same number of teeth.
  • At least one phase adjustment device is provided with which a rotational position of the unbalance elements can be changed relative to one another. This is particularly advantageous when several pairs of unbalance elements are provided in a vibration unit.
  • the adjusting device has an adjusting motor which can be controlled by the control unit.
  • the control unit can be an electric motor or a hydraulic motor.
  • control unit is connected to at least one second sensor device, by means of which a phase position of the unbalance elements of a vibration unit can be determined.
  • Optical, inductive, capacitive or other sensors can also be provided for determining the respective rotational position of the unbalance elements in relation to one another.
  • unbalance elements of a vibration unit can be arranged together in a housing or on a carrier element.
  • the first pair of first unbalance elements are arranged in a first housing and the second pair of second unbalance elements are arranged in a second housing.
  • the housings are designed separately from one another.
  • the bearings of one or more housings can have damping elements.
  • a connecting device is provided with which the first housing and the second housing can be connected to one another.
  • the two pairs can be separated.
  • One pair of vibrations would vibrate more or less freely or would only be connected to the other pair of vibrations via a soft spring.
  • the detachable and actuatable connecting device for example by manually or hydraulically actuated locking bolts
  • the housings or pairs of vibrations are rigidly connected to one another.
  • a connection by means of cylinders a connection by means of a toggle lever mechanism can also be provided.
  • an elastic damping element can be pressed together between the two housings so that the two housings do not hit one another.
  • Such a damping element arranged between the oscillation units would only absorb energy during a short phase.
  • the oscillation pairs would not yet touch each other, in the connected state the damping element would be compressed and the housing with the pairs of unbalance elements arranged therein would be in direct contact.
  • a particularly simple structure is achieved in that the first imbalance elements are designed differently from the second imbalance elements in order to generate a directed oscillation.
  • the second vibration unit can thus be designed as a simple unit or a simple vibrator which cannot generate any directional vibration.
  • only the first vibration unit with first unbalance elements and second unbalance elements would be designed to generate a directed vibration.
  • the third unbalance elements in the second oscillation unit can be designed to be identical to or different from the first unbalance elements.
  • the invention further relates to a construction machine according to claim 12 with a carrier device and a mast, along which a vibration generator is mounted so that it can be moved essentially vertically.
  • a vibration generator is provided as described above.
  • the construction machine is in particular a so-called vibrator, as it is used in basic construction and is basically known.
  • the method according to the invention for inserting a pile into a ground is characterized in that the vibrations are generated with a vibration generator as described above.
  • the rotational speeds of the two pairs of vibrations can be changed by means of a control unit and the rotational speeds can thus be coordinated with one another.
  • the change in the coordination can take place depending on the type of soil and / or on the respective task, such as driving in or pulling the pile.
  • the speed setting and speed change can take place automatically or semi-automatically by the control unit in accordance with stored control programs, in particular when the vibration generator is running up.
  • a preferred variant of the method according to the invention can be seen in the fact that the pile is a pile, a girder or a sheet pile.
  • a vibration generator 10 according to the invention with a vibration unit 20 is shown.
  • the vibration unit 20 has a lower box-shaped first housing 21a with three first unbalance elements 22, each with a first shaft 23.
  • Each first shaft 23 of the identically constructed, first unbalance elements 22 comprises a first unbalance 24, a first drive gear 25 and a phase adjustment gear 26 arranged at a distance from it.
  • a torque from a lower first rotary drive 27 is generated by a central first unbalance element 22 the two further adjoining first unbalance elements 22 are transmitted by means of the first drive gears 25 meshing with one another.
  • a rotational position of the first unbalance elements 22 can be changed by means of a first phase adjustment device 28 with an adjustment motor 29.
  • the change in the rotational position is brought about via the first adjusting gearwheels 26 which mesh with one another.
  • two second unbalance elements 32 are arranged in an upper cuboid second housing 21b.
  • the second unbalance elements 32 each have a second shaft 33, a second unbalance 34, a second drive gear 35 and a second phase adjustment gear 36.
  • the second unbalance elements 32 are driven via an upper, second rotary drive 37.
  • a phase adjustment is achieved via a second phase adjustment device 38 with a second adjustment motor 39.
  • the first unbalance elements 22 and the second unbalance elements 32 are separate and mechanically decoupled with regard to the torque drive.
  • the lower first housing 21a and the upper second housing 21b, which are each box-shaped, are coupled to one another via a releasable connecting device 50.
  • the connecting device 50 is designed as a bolt connection.
  • the rotational speeds of the unbalance elements in the vibration unit 20 are coordinated and changed by means of a central control unit 60, which can in particular include a computer unit.
  • the control unit 60 records a speed and / or a rotational position of the first unbalance elements 22 via a first sensor device 66 and a rotational speed and / or rotational position of the second unbalance elements 32 of the vibration unit 20 via a second sensor device 68 and controls their rotary drives 27, 37.
  • the control unit 60 controls a first hydraulic pump 62, which in particular supplies the lower, second rotary drive 47, and a second hydraulic pump 64, which in particular operates the upper, second rotary drive.
  • the control can in particular take place in such a way that that the same or even multiple speeds of the second unbalance elements 32 to the speeds of the first unbalance elements 22 are achieved.
  • speed changes between the different pairs of unbalance elements of the vibration unit 20 can be set in a targeted manner, in particular by a predetermined control program. In this way, in particular, undesired resonance frequencies can be avoided or at least passed through particularly quickly.
  • first adjusting motor 29 and the second adjusting motor 39 can be actuated via the control unit 60 via control lines (not shown), a defined rotational position being set for the respective unbalance elements 22, 32.
  • All drives and adjusting elements of the vibration unit 20 are preferably connected to the control unit 60 and can be controlled and adjusted accordingly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
EP15193440.3A 2015-11-06 2015-11-06 Schwingungserzeuger und verfahren zum einbringen eines rammgutes in einen boden Active EP3165290B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP15193440.3A EP3165290B1 (de) 2015-11-06 2015-11-06 Schwingungserzeuger und verfahren zum einbringen eines rammgutes in einen boden
PCT/EP2016/067919 WO2017076525A1 (de) 2015-11-06 2016-07-27 Schwingungserzeuger und verfahren zum einbringen eines rammgutes in einen boden
CN201680064554.5A CN108348960B (zh) 2015-11-06 2016-07-27 振动发生器和用于将打桩体引入到土壤中的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15193440.3A EP3165290B1 (de) 2015-11-06 2015-11-06 Schwingungserzeuger und verfahren zum einbringen eines rammgutes in einen boden

Publications (2)

Publication Number Publication Date
EP3165290A1 EP3165290A1 (de) 2017-05-10
EP3165290B1 true EP3165290B1 (de) 2021-04-07

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EP15193440.3A Active EP3165290B1 (de) 2015-11-06 2015-11-06 Schwingungserzeuger und verfahren zum einbringen eines rammgutes in einen boden

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EP (1) EP3165290B1 (zh)
CN (1) CN108348960B (zh)
WO (1) WO2017076525A1 (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202018100511U1 (de) * 2018-01-30 2019-05-03 Liebherr-Werk Nenzing Gmbh Hydraulischer Rüttlerantrieb sowie ein Ramm- und/oder Bohrgerät mit einem hydraulischen Rüttlerantrieb
DE102019113947A1 (de) * 2019-05-08 2020-11-12 Liebherr-Components Biberach Gmbh Schwingungserzeuger sowie Baumaschine mit einem solchen Schwingungserzeuger

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2311596A1 (fr) * 1975-04-23 1976-12-17 Procedes Tech Const Perfectionnement aux appareils d'enfoncement ou d'arrachage dits vibrofonceurs
DE4425905A1 (de) * 1994-07-21 1996-01-25 Bald Hubert Vorrichtung und Verfahren zur Kompensation von Querschwingungen an Unwuchtvibratoren mit vorgegebener Schwingrichtung
DE19631849C1 (de) * 1996-08-07 1998-01-08 Svedala Gfa Aufbereitungsmasch Schwingungsantrieb für eine Siebmaschine
NL1023574C2 (nl) * 2003-05-30 2004-12-01 Kandt Special Crane Equipment Trilinrichting.
EP2105213B1 (de) * 2008-03-28 2018-01-24 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserzeuger
EP2105214B1 (de) 2008-03-28 2018-09-12 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserzeuger
EP2158976B1 (de) 2008-08-27 2013-08-14 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserzeuger
EP2781269A1 (de) * 2013-03-20 2014-09-24 Eurodrill GmbH Schwingungserreger, insbesondere für eine Baumaschine
EP2789402B1 (de) * 2013-04-10 2017-05-17 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Schwingungserreger

Also Published As

Publication number Publication date
WO2017076525A1 (de) 2017-05-11
EP3165290A1 (de) 2017-05-10
CN108348960B (zh) 2020-09-04
CN108348960A (zh) 2018-07-31

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