EP2393992B1 - Ramme mit wirbelstromkupplung - Google Patents

Ramme mit wirbelstromkupplung Download PDF

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Publication number
EP2393992B1
EP2393992B1 EP10702628.8A EP10702628A EP2393992B1 EP 2393992 B1 EP2393992 B1 EP 2393992B1 EP 10702628 A EP10702628 A EP 10702628A EP 2393992 B1 EP2393992 B1 EP 2393992B1
Authority
EP
European Patent Office
Prior art keywords
ramming
ram
cable
weight
rope
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
EP10702628.8A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2393992A1 (de
Inventor
Mario Prütz
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to PL10702628T priority Critical patent/PL2393992T3/pl
Publication of EP2393992A1 publication Critical patent/EP2393992A1/de
Application granted granted Critical
Publication of EP2393992B1 publication Critical patent/EP2393992B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/08—Drop drivers with free-falling hammer

Definitions

  • the invention relates to a ram according to the preamble of claim 1 and a controller for such a ram.
  • Such rams or piling devices are used for example for compacting floors or for example other building materials, but in particular for driving in piles or pile tubes or the like.
  • Such rams have a ram weight with an abutment surface which acts on the ground or the pile, the pile pipe or the like and a counter-impact surface provided thereby, thus compacting the ground or driving the pile, the pile pipe or the like into the ground.
  • the ram weight is usually designed as a free fall weight, wherein the free fall is slowed down by inertia of the moving masses as well as by friction.
  • a particular problem of such rams is, on the one hand, the formation of a slack rope, which may result in the cable skipping grooves of a cable drum of a winch or lashing after the impact of the fall weight, thereby causing damage.
  • the coupling comprises an eddy current coupling.
  • the clutch consists of an eddy current coupling.
  • the eddy current coupling is preferably of the electromagnetic type.
  • the proposed ram has, in contrast to the known from the prior art rams and in particular to that of EP 0 413 189 A1 known ram on the advantage that they can work more energy efficient and with higher ram frequency and has a lower wear of the highly stressed clutch.
  • the ram is finer and more precisely controllable than rams of the prior art. Also, drifting of the rope is controlled by the winch, unlike a pure free fall by prior art ramming.
  • At least one brake preferably an eddy current brake and / or a parking brake, is connected to the drum.
  • the eddy current brake can preferably the rotation of the drum during drumming of the rope as needed without delay, accurate and low-wear braked as needed.
  • Preferably can be relieved with the parking brake of the motor after reaching a desired lifting height of the ramming weight.
  • the brakes are opened and the clutch is at least partially opened or deactivated.
  • the Abtrommelung the predetermined pitch can be made specifically.
  • the provision of a brake allows in an advantageous development, a specific adjustment of a braking force, as will be explained below.
  • the eddy current coupling and / or the eddy current brake can be supplied with electrical energy in any desired manner as required.
  • a power generator be provided, which is driven by the motor and the eddy current coupling and / or the eddy current brake feeds.
  • the ram can be controlled as desired in any manner.
  • a controller may be provided, which is designed such that it calculates a predetermined pitch for performing a pile stroke, which is equal to the sum of a pile advance of a previous pile driver and from the lifting height of the ramming weight, and when triggering a free fall of the ramming weight the winch controls so that the rope is drummed with the predetermined length.
  • a controller may be provided, which is designed such that it calculates a predetermined pitch for performing a pile stroke, which is equal to the sum of a pile advance of a previous pile driver and from the lifting height of the ramming weight, and when triggering a free fall of the ramming weight the winch controls so that the rope is drummed with the predetermined length.
  • the rope length which can be hauled off can be corrected on the basis of calculated trend values.
  • the proposed ram has a hydraulic cylinder which carries at its retractable and extendable end a deflection roller over which the cable runs. By retracting and extending the hydraulic cylinder, the lifting height can be adjusted quickly and exactly as needed.
  • the invention also proposes a controller for one of the proposed rams, wherein the rope is drummed with a predeterminable length, which is equal to the sum of a pile advance of a previous pile driver and the lift height of the ramming weight to carry out a pile kick when triggering a freefall the ramming weight ,
  • This control enables a minimization of slack rope formation as well as an increase of the energy efficiency and ramming frequency of the ram. Because of the feeding of the value of a previous pile driving at a given stroke height of the ramming weight of the achievable pile progress in a current pile impact over the entire, calculated from the previous pile progress predefinable length unabated and thus carried out with high efficiency.
  • the at least one brake preferably the eddy current brake is set to a predeterminable, in particular reduced braking force, the clutch deactivated or opened and rope corresponding to the positive additional in an additional Rammfortuze compared to the previous Ramm progress after Abtrommelung over the predeterminable rope length Rammfortinho drummed.
  • the at least one brake preferably the eddy current brake, thereby falls advantageously with a braking force that keeps the rope taut after the impact of the freefall weight and the additional positive cable removal beyond the pile advance of a tendency measurement.
  • the brake preferably the eddy current brake
  • a braking force of, for example, a maximum of up to 40 kN is set.
  • the incidence of the brake with a reduced braking force and the deactivation or opening of the clutch is advantageously carried out at about the same time, however, the brake can initially also occur and subsequently open the clutch. This then takes place advantageously within a very short period of time.
  • the rope is pulled taut after a ramming impact. Due to the tightening of the rope, the path length of the rope is ultimately determinable for a pile impact, so that a predeterminable rope length to be removed can be determined for a subsequent pile stroke taking into account the stroke height of the pile weight.
  • the clutch is at least partially activated or closed to tighten the rope.
  • the rope length is about the drumming of the rope with the winch of the previous piling progress.
  • a determination of the previous positive or negative Rammfortuzes by measuring the rope length of the floppy rope up to its tightening. After tightening the rope advantageously drops the brake.
  • the first ramming impact of a ram with one of the proposed controls is advantageously carried out starting from a ramming material placed on a pile, for example ground or pile, etc., with a ramming weight set up on a counter-impact surface formed thereby so that its impact surface comes to lie on the counter-impact surface.
  • the rope is pulled taut over the winch with the brake open and the clutch activated or closed.
  • the Rammexcellent is raised by a rope shortening, the lifting height of the ramming weight is measured.
  • the measurement can be done by photo-optical, mechanical and / or electronic sensors.
  • the free fall is triggered by disabling the clutch to release the rope.
  • the clutch After completion of the first pile the clutch is closed or activated, the partial braking canceled and the rope tightened. It compares the rope length for tightening the rope with the rope requirement of the previous pile stroke and determines the rope release for the following pile stroke. The rope length measurement is carried out to supplement the calculations for the piling progress and the necessary rope length preselection for the following pile stroke and the brake is applied again.
  • the ramming weight is raised, the lifting height of the ramming weight is measured for the second and following ramming strokes, subsequently the free fall of the ramming weight is released, the brake is opened and the clutch is activated or closed, so that the rope can be pulled off the winch according to the lifting height of the rope Rammiss plus the achieved in the first pile driver or the other previous ramming, possibly corrected Rammfort vinegars.
  • the brake of the winch is partially closed, preferably at the same time the clutch is disabled or opened, so that in a positive additional Rammfort suits now the ramming weight can deduct additional rope from the winch.
  • the winch does not accelerate and also prevents wear of the winch motor.
  • the clutch is then reactivated or closed, the rope tightened, the ramming progress thereby measured, and the brake is applied.
  • This second and further step can be repeated as often as desired until the desired pile depth is achieved.
  • the clutch is advantageously arranged between a winch gear and the engine.
  • the lifting height of the ramming weight is kept substantially constant at each pile stroke.
  • a control of the lifting height can be done via a measuring device.
  • the measuring device preferably has at least one, more preferably at least two, corresponding sensors on the ram.
  • the lifting height of the ramming weight corresponds to at least a partial length of a piston rod of a hydraulic cylinder arranged between winch and ramming weight and connectable to the rope.
  • the stroke of Rammiss can be done with accurate determination of the lifting height, and also a high number of ramming be realized.
  • the piston rod of the hydraulic cylinder is movable at least as fast as the ram weight falls, preferably the falling time of the ram weight is longer than the extension time of the piston rod from the hydraulic cylinder.
  • a slackening of the rope occurring during the shortest possible time is of little consequence, and by the way can also be set specifically by a setting of the extension time of the piston rod of the hydraulic cylinder with respect to the respective ram or taken into account by the control and thereby minimized.
  • at least one sensor is arranged at the top of the deflection roller of the hydraulic cylinder for measuring the lifting height.
  • the pile progresses of the previous at least two pile impacts are included.
  • the tendency values are included in the specification of the rope length which can be taken off, and these are thus corrected if necessary. This allows an intelligent control that allows not only based on one or two previous ramming and the ram advances achieved with this ram the length of the rope, but it can be taken at the same time individually with regard to the specific ground conditions, as long as and insofar as a tendency can be determined from the determined trend values. This ultimately results in a correction of the specifiable rope length.
  • the proposed controller can be designed, for example, as a PLC (Programmable Logic Controller) or PLC (Programmable Logic Controller).
  • the opening and closing of the eddy current clutch and / or the opening and collapse of the brakes are controlled electrically and / or the retraction and extension of the hydraulic cylinder hydraulically, preferably by means of logic valves.
  • the controller can also take into account that pile progresses which occur due to burglary in caverns, for example, are not taken into account as singular events for determining the drivable cable length for the next pile impact, but then, for example, the pile advance of the previous pile pile is included.
  • the ramming control essentially takes place as described above, except that the lifting height of the ramming weight is ultimately determined over a partial length of the piston rod, in particular based on their length when fully extended of the hydraulic cylinder.
  • About the proposed control is then additionally controlled the retraction and extension of the piston rod of the hydraulic cylinder.
  • the lifting of the ramming weight is carried out by retracting the piston of the hydraulic cylinder in the cylinder housing.
  • a piling device or ram 10 is shown in a preferred embodiment with a winch 12, from which a cable 16 is guided over a arranged in an upper region of a leader 11 first guide roller 22 to a arranged in a head portion of a hydraulic cylinder 18 guide roller 20 and from this over a head portion 24 and at least one arranged there further deflection roller 26 is guided to the other side of the leader 11 and connected there with the ram trained as Rammbär, in the broker 11 Rammclude 14. Furthermore, a concrete bucket 15 is provided.
  • the Fig. 1 shows here the hydraulic cylinder 18 with retracted piston and Ramma elevated 14.
  • the arranged on the cable 16 arrows are only the better orientation to illustrate the course of the same serve.
  • the Fig. 2 shows the ram 10 according to the Fig. 1 in a rear view, from which in particular the slightly offset with respect to a central axis of the Gurklers 11 arrangement of the hydraulic cylinder 18 and according to the arrangement of the first guide roller 22 can be seen.
  • the ram 10 is shown schematically with some of its components described in more detail below.
  • the ram 10 has the ramming weight 14, the cable 16 to which the ramming weight 14 is attached, and the cable winch 12.
  • the winch 12 has a drum 13 for the cable 16, a motor 17 for the drum 13 and an eddy current coupling 19 between the drum 13 and the motor 17.
  • the ram 10 also has an eddy current brake 21 and a parking brake 23, which are connected in parallel with the drum 13.
  • the ram 10 further includes a power generator 25 which is driven by the motor 17 and the eddy current clutch 19, the eddy current brake 21 and the parking brake 23 feeds.
  • the ram 10 further includes a controller 27 which is also powered by the power generator 25 and controls technically with the drum 13, the motor 17, the hydraulic cylinder 18, not shown here, the eddy current clutch 19, the eddy current brake 21, the parking brake 23 and Power generator 25 is connected. With activated or closed eddy current clutch 19, the torque of the motor 17 can be transmitted as required by appropriate control by the controller 27 wholly or in any proportion on the drum 13.
  • the controller 27 is designed such that it calculates a predetermined pitch for performing a pile driver, which is equal to the sum of a pile advance of a previous pile driver and the lifting height of Rammiss 14, and upon release of a free fall of the ramming weight 14, the winch 12 so controls in that the cable 16 is torn off with the predeterminable length.
  • the controller 27 may determine the ramming progresses of the respective driving strokes and the lifting height, for example by sensory scanning of the rotations of the drum 13 and / or the rotations of at least one of the deflection rollers 20, 22, 26.
  • the free fall of the ramming weight 14 is triggered by the controller 27 deactivating or opening the eddy current clutch 19 and deactivating or opening the eddy current brake 21 so that the drum 13 is now driven by the Weight of the ramming weight 14, can rotate freely.
  • the controller 27 Once the controller 27 has detected by sensing the rotation of the drum 13 that the predetermined cable length has been reached, it activates or closes the eddy current brake 21, so that the rotation of the drum 13 is decelerated.
  • the controller 27 deactivates or opens the eddy current brake 21 and activates or closes the eddy current clutch 19 and drives the motor 17 to drive the drum 13 in the drum direction.
  • the controller 27 deactivates or reopens the eddy current clutch 19 and deactivates or opens the eddy current brake 21 and stops the motor 17. As a result, the next pile stroke can be started directly by triggering the next free fall.

Landscapes

  • 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)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
  • Earth Drilling (AREA)
EP10702628.8A 2009-02-06 2010-02-03 Ramme mit wirbelstromkupplung Not-in-force EP2393992B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10702628T PL2393992T3 (pl) 2009-02-06 2010-02-03 Kafar ze sprzęgłem wiroprądowym

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009007916A DE102009007916A1 (de) 2009-02-06 2009-02-06 Ramme mit Wirbelstromkupplung
PCT/EP2010/000656 WO2010089096A1 (de) 2009-02-06 2010-02-03 Ramme mit wirbelstromkupplung

Publications (2)

Publication Number Publication Date
EP2393992A1 EP2393992A1 (de) 2011-12-14
EP2393992B1 true EP2393992B1 (de) 2013-07-31

Family

ID=41728072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10702628.8A Not-in-force EP2393992B1 (de) 2009-02-06 2010-02-03 Ramme mit wirbelstromkupplung

Country Status (5)

Country Link
EP (1) EP2393992B1 (pl)
DE (1) DE102009007916A1 (pl)
ES (1) ES2432496T3 (pl)
PL (1) PL2393992T3 (pl)
WO (1) WO2010089096A1 (pl)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111424637A (zh) * 2020-03-31 2020-07-17 杭叉集团股份有限公司 一种强夯机及其自动刹车系统、夯锤高度检测系统
CN111424638A (zh) * 2020-03-31 2020-07-17 杭叉集团股份有限公司 一种强夯机自动刹车方法及系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016008819A1 (de) * 2016-07-19 2018-01-25 Liebherr-Werk Nenzing Gmbh Schlagzahloptimierung
NL2022051B1 (en) * 2018-11-22 2020-06-05 Ihc Holland Ie Bv A pile driving system
CN109680688A (zh) * 2018-12-30 2019-04-26 盐城工学院 一种分段式冲击的打桩机锤头
EP4215717B1 (de) 2022-01-19 2023-12-06 BAUER Maschinen GmbH Baumaschine und verfahren zum betreiben einer baumaschine
CN220335899U (zh) * 2022-09-02 2024-01-12 江苏华岩建设有限公司 一种复合承载体斜向桩机

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1520606A (fr) * 1967-02-20 1968-04-12 Potain & Cie Ets F Perfectionnements aux treuils pour la commande d'appareils de levage du genre des grues, ponts roulants au analogues
SE341669B (pl) * 1970-04-13 1972-01-10 Stabilator Ab
US4002211A (en) * 1974-09-19 1977-01-11 Raymond International Inc. Cable operated apparatus for forming piles
AU546771B2 (en) * 1981-02-19 1985-09-19 Compagnie Internationale Des Pieux Armes Frankignoul S.A. Pile driver
DE3927354A1 (de) 1989-08-18 1991-04-25 Liebherr Werk Nenzing Steuerung der seiltrommel einer winde fuer ein an das seil angehaengtes, frei herabfallendes rammgewicht
DE102004021615B4 (de) * 2004-05-03 2011-04-14 Franki Grundbau Gmbh Vorrichtung und Verfahren zur Herstellung von Pfählen
DE102007062301B4 (de) * 2007-12-21 2011-09-22 Franki Grundbau Gmbh & Co.Kg Steuerung für eine Rammvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111424637A (zh) * 2020-03-31 2020-07-17 杭叉集团股份有限公司 一种强夯机及其自动刹车系统、夯锤高度检测系统
CN111424638A (zh) * 2020-03-31 2020-07-17 杭叉集团股份有限公司 一种强夯机自动刹车方法及系统
CN111424637B (zh) * 2020-03-31 2021-09-07 杭叉集团股份有限公司 一种强夯机及其自动刹车系统、夯锤高度检测系统

Also Published As

Publication number Publication date
DE102009007916A1 (de) 2010-08-19
EP2393992A1 (de) 2011-12-14
WO2010089096A1 (de) 2010-08-12
PL2393992T3 (pl) 2013-12-31
ES2432496T3 (es) 2013-12-03

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