EP0843760B1 - Ramme - Google Patents
Ramme Download PDFInfo
- Publication number
- EP0843760B1 EP0843760B1 EP96929212A EP96929212A EP0843760B1 EP 0843760 B1 EP0843760 B1 EP 0843760B1 EP 96929212 A EP96929212 A EP 96929212A EP 96929212 A EP96929212 A EP 96929212A EP 0843760 B1 EP0843760 B1 EP 0843760B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pile driver
- ram according
- compressed air
- cylinder
- pressure
- 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.)
- Expired - Lifetime
Links
Images
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
- E02D7/26—Placing by using several means simultaneously
Definitions
- the invention relates to a ram according to the preamble of claim 1.
- the working gas supply device Means for supplying fuel and air to the work area.
- rams are known in which a percussion piston is used e.g. B. using an outside of the guide cylinder arranged hydraulic cylinder is raised and then falls freely on the hammer.
- Such soft working rams are used especially there where piles and the like are driven into softer ground or where there is a lot of noise, as it occurs in diesel bears, intolerable is.
- a ram according to the preamble of claim 1 are further developed that their way of working between hard and soft Ramming is convertible.
- the ram according to the invention can optionally from one of at least two working gas supply facilities are supplied with working gas under pressure, which lifts the percussion piston in the cylinder under expansion.
- working gas supply device has a simple structure compared to a ram, so that with the invention over the simultaneous provision of two different types of rams significant savings will be obtained. You can too during operation and when ramming one and the same Pile or other pile driving material from one operating mode switch to the other. That way the different properties at different depths of the subsurface without retrofitting Simply take the ram into account.
- DE-C-4 414 190 should also be mentioned, which concerns a diesel ram that can also work on the hydraulic principle.
- the percussion piston first by opening a lower connection of the Servo valve assigned to the work area from the rest position accelerated out and then by opening one other servo valves with the majority of those in the compressed air reservoir contained compressed air. This is with a view to optimally lifting the percussion piston advantageous.
- the desired is obtained in a simple manner Synchronization of the two servo valves, via which at axially spaced locations on the cylinder compressed air is fed to the ram.
- a ram according to claim 12 can in the rest position of the servo valve from the servomotor of the upper Incoming feed valve assigned to the outflow Air is released into the ambient atmosphere, whereby at the same time it is ensured that none is under pressure standing gas from the working area of the ram to the servo valve flows back.
- the ram shown in the drawing has one Cylinder 10, in the lower end of an impact piece 12 is tightly displaceable. This has an upper piston section 14, in its top face a fuel well 16 is formed. A medium one cylindrical intermediate section 18 of the striking piece 12 is guided in an opening 20 which is in a lower End plate 22 of the cylinder 10 is provided. The intermediate section 18 carries a plate-like Impact section 24 with a convexly curved lower end face.
- a percussion piston 26 out of a lower piston section 28 and an upper piston section 30 and a middle Piston section 32 with a slightly reduced diameter having.
- the lower face of the piston section 28 carries a flat elevation 34, which in the fuel well 16 can intervene.
- the cylinder 10 is formed with a working slot 36, over which the ram in diesel mode air draws in or releases combustion gases.
- a working slot 36 over which the ram in diesel mode air draws in or releases combustion gases.
- injection units 38 and 40 respectively and only schematically represented injection units used.
- Each of these injection units has one Actuating lever 42 or 44 with the peripheral surface of the percussion piston 26 cooperates.
- nozzles of the injection units 38, 40 a fuel jet 46 or a fuel mist 48 from.
- the fuel jet 46 is from the injection unit 38 provided under low pressure and is managed that he gets into the fuel well 16. Falling down of the percussion piston 26 is then in the fuel trough fuel present in the compression heated air atomized.
- the fuel mist 48 is injected from the injection unit 40 released under high pressure and directly into the compressed hot air led.
- high pressure injection sets thus the combustion based on the bottom dead center of the percussion piston earlier than with low-pressure injection. This results in a softer impact piston 26 hit on the striking piece 12.
- low pressure injection gives ignition of the mixture only after the impact piston hits hard 26 on the striking piece 12.
- the injection units 38 and 40 are easier to present for the sake of axially spaced locations of the Cylinder 10 shown. It is understood that they are in the Practice can also be offset in the circumferential direction (at same axial position) or in the axial direction and Circumferential direction can be offset. It goes without saying further that the injection units are also each made spatially separate pump units and nozzle units can exist, in which case one pump unit each several in the circumferential direction and / or axial direction can supply offset nozzle units.
- the injection units 38, 40 are via solenoid valves 50, 52 connected to the outlet of a fuel pump 54.
- the latter sucks diesel fuel from a storage tank 56 at.
- the two injection units 38, 40 are optional can be activated in that the assigned to them Solenoid valves 50, 52 driven. This is done optionally through a control circuit 58 with a mode selector switch 60.
- the control circuit 58 is connected to a third output terminal a further activation signal "a", which for Setting a compressed air operation of the ram serves as will now be described in more detail below.
- the slide 70 is with the piston rod 72 of a servomotor 74 connected to the top of an end plate 76 of the compressed air reservoir 68 is placed.
- a piston 78 is displaceable in the cylinder bore, which biased into the lower end position by a spring 80 is.
- the working space of the Actuator 74 is adjustable via two series connected Throttles 82, 84 with the outlet of a servo valve 86 connected.
- About the throttle 82 is one in the direction check valve 88 which opens to the servomotor, while the throttle 84 through a towards the servomotor blocking check valve 90 is bridged.
- the throttle 84 thus throttles the servomotor 74 supplied working fluid, the throttle 82 when the pressure is released working fluid flowing out of the actuator 74, and by adjusting the throttle 84 you can open the speed of the slider 70, by adjusting the Throttle 82 adjust its closing speed.
- a servomotor 94 of the servo valve 86 is via a 2/2 solenoid valve 96 with the interior of the compressed air reservoir 68 connectable, at one of the junction line 93 remote location, so that Pressurizing the actuator 94 regardless of dynamic effects at the mouth of the line 93 takes place.
- the solenoid valve 96 is activated by the activation signal emitted by the control circuit 58 "a".
- the servomotor 94 searches for the working position of the servo valve 86 set. In the opposite direction acts another servomotor 98 of the servo valve 86 and also a biasing spring connected in parallel to this 100.
- the actuator 98 is adjustable Pressure regulator 102 connected to a feed line 104, in which a compressor 106 via check valve 108 promotes and which via a further line 110 is connected to the compressed air reservoir 68.
- the working connection of the servo valve 86 is also via a working line 112, one towards Includes check valve 114 opening cylinder 10 with one in the bottom section of the work space 26 communicating port 116 of the cylinder connected.
- the percussion piston 26 is seated the striking piece 12.
- the compressor 106 delivers continuously Air in the compressed air reservoir 68.
- At the beginning of the filling of the compressed air reservoir 68 is of a small cross section having actuator 98 and the bias spring 100 force exerted on the slide of the servo valve 86 is greater than the force generated by the actuator 94.
- the servo valve 86 thus initially remains in that shown in FIG Resting position.
- the distance by which the percussion piston 26 is raised is obviously depends on the prevailing in the pressure accumulator 68 Pressure, the latter in turn from the switching pressure of the Servo valves 86 from. This can be done via the adjustable Pressure regulator 102 can be set.
- the servo valve 86 is below the predominant force of the servomotor 98 and the biasing spring 100 in that shown in the drawing Moved back to rest position. In this then the compressed air located under the piston 78 via the Throttle 82 and the check valve 90 to the environment be dismantled so that the slider 70 the connecting channels 66 closes again.
- the selector switch 60 is in the hard ramming position according to the diesel principle, so instead of Injection unit 38 the injection unit 40 with fuel supplied since the solenoid valve 50 is now opened becomes.
- the diesel cycle then runs in a similar way as above described for high pressure injection, with the only one Exception that the injection of the fuel in the fuel well 16 takes place and the ignition of the mixture after the impact piston 26 has opened the striking piece 12 takes place.
- Ramming optionally in three different operating modes use to beat different intensity and generate different time profiles.
- the switchover can also take place during operation the ram.
- the compressed air operation the ram can also be used as a starting aid for the Initiate diesel operation.
Description
Claims (16)
- Ramme mit einem Zylinder (10), mit einem im Zylinder (10) geführten Schlagkolben (26) und einem im unteren Zylinderende geführten Schlagstück (12), welche zusammen mit dem Zylinder (10) einen Arbeitsraum (62) begrenzen, und mit einer Einrichtung zum intermittierenden Beaufschlagen des Arbeitsraumes (62) mit unter hohem Druck stehenden Arbeitsgas, dadurch gekennzeichnet, daß der Arbeitraum (62) mit mindestens zwei Arbeitsgas-Versorgungseinrichtungen (38, 50, 54; 40, 52, 54; 68) verbunden ist, welche sich bezüglich des Druckes des von ihnen erzeugten Arbeitsgases und/oder bezüglich des zeitlichen Verlaufes des von ihnen erzeugten Druckaufbaus im Arbeitsraum (62) unterscheiden.
- Ramme nach Anspruch 1, dadurch gekennzeichnet, daß eine erste der Arbeitsgas-Versorgungseinrichtungen einen Druckluftspeicher (68) umfaßt, der über eine Ventilanordnung (64, 70, 86, 114) mit einem unteren Abschnitt des Zylinders (10) verbindbar ist.
- Ramme nach Anspruch 2, dadurch gekennzeichnet, daß der Druckluftspeicher (68) dem Zylinder (10) unmittelbar benachbart ist und die Ventilanordnung ein Servoventil (64, 70, 74) umfaßt, dessen Verschlußteil (70) im Inneren des Druckluftspeichers (68) angeordnet ist und mit mindestens einer Steueröffnung (66) zusammenarbeitet, die in einem kurzen den Druckluftspeicher (68) mit dem Zylinder (10) verbindenden Verbindungsteil (64) ausgebildet ist.
- Ramme nach Anspruch 3, dadurch gekennzeichnet, daß das Verschlußteil als plattenförmiger Schieber (70) ausgebildet ist und das Verbindungsteil (64) eine Mehrzahl paralleler Verbindungskanäle (66) aufweist.
- Ramme nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, daß die Ventilanordnung mindestens zwei Servoventile (86; 64, 70, 74) aufweist, die unter zeitlichem Abstand aus der Schließstellung in die Offenstellung gesteuert werden, und daß das zuerst aufgesteuerte Servoventil (86) mit einem ersten Punkt (116) des Arbeitsraumes (62) verbunden ist, der tiefer liegt als ein zweiter Punkt (64) des Arbeitsraumes, mit welchem das später aufgesteuerte Servoventil (64, 70, 74) verbunden ist.
- Ramme nach Anspruch 5, dadurch gekennzeichnet, daß ein Druckmittel-Stellmotor (74) des später aufgesteuerten Servoventiles (64, 70, 74) über eine Drossel (84) mit Druckmittel beaufschlagt wird.
- Ramme nach Anspruch 6, dadurch gekennzeichnet, daß über die Drossel (84) ein in Richtung zum Stellmotor (74) sperrendes Rückschlagventil (90) geschaltet ist.
- Ramme nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß der Servoventil-Stellmotor (74) ein einfach wirkender durch eine Feder (80) in die eine Endstellung vorgespannter Stellmotor ist und in seine Arbeitsleitung in Reihe zur die Aufsteuer-Verzögerung bewerkstelligenden Drossel (84) eine das Abströmen von Arbeitsfluid dämpfende Drossel (82) geschaltet ist, welche durch ein in Richtung zum Stellmotor (74) öffnendes Rückschlagventil (88) überbrückt ist.
- Ramme nach einem der Ansprüche 6 bis 8, dadurch gekennzeichnet, daß der Stellmotor (74) mit dem Ausgang eines Servoventiles (86) verbunden ist, über welches ein unterster Abschnitt (116) des Arbeitsraumes (62) mit dem Druckluftspeicher (68) verbindbar ist.
- Ramme nach Anspruch 9, dadurch gekennzeichnet, daß das Servoventil (86) zwei in entgegengesetzter Richtung wirkende Druckmittel-Stellmotoren (94, 98) aufweist, von denen der eine, in Öffnungsrichtung wirksame größere Druckangriffsfläche aufweist und mit dem vollen im Druckluftbehälter (68) herrschenden Druck beaufschlagt ist, während der andere, in Schließrichtung wirkende nur mit einem Teil des im Druckluftbehälter (68) herrschenden Druckes beaufschlagt ist und durch eine parallel geschaltete Feder (100) unterstützt wird.
- Ramme nach Anspruch 10, dadurch gekennzeichnet, daß der zweite Stellmotor (98) über einen einstellbaren Druckregler (102) mit Druckluft beaufschlagt wird.
- Ramme nach einem der Ansprüche 9 bis 11, dadurch gekennzeichnet, daß das Servoventil (86) in seiner Ruhestellung seine Arbeitsöffnung mit einer Druckentlastungsleitung (92) verbindet und daß in eine Verbindungsleitung (112) zwischen seiner Arbeitsöffnung und dem Zylinder (10) ein in Richtung zum Zylinder (10) öffendes Rückschlagventil (114) eingefügt ist.
- Ramme nach einem der Ansprüche 2 bis 12, dadurch gekennzeichnet, daß eine Speiseöffnung des Druckluftspeichers (68) über ein Rückschlagventil (106) mit dem Ausgang eines Kompressors (108) verbunden ist.
- Ramme nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß eine der Arbeitsgas-Versorgungseinrichtungen eine in der Oberseite des Schlagstückes (12) ausgebildete Kraftstoffmulde (16) und eine Niederdruck-Kraftstoff-Einspritzeinrichtung (38, 50, 54) umfaßt, durch welche in Abhängigkeit von der Bewegung des Schlagkolbens (26) eine vorzugsweise einstellbare Kraftstoffmenge in die Kraftstoffmulde (16) eingespritzt wird.
- Ramme nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß eine der Arbeitsgas-Versorgungseinrichtungen eine Hochdruck-Kraftstoff-Einspritzeinrichtung (40, 52, 54) aufweist, welche in vorzugsweise einstellbarer Abhängigkeit von der Bewegung des Schlagkolbens (26) eine unter hohem Druck zerstäubte, vorzugsweise einstellbare Kraftstoffmenge (48) in den unteren Abschnitt des Arbeitsraumes (62) abgibt.
- Ramme nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Arbeitsgas-Versorgungseinrichtungen jeweils mindestens ein Servoelement (50; 52; 96) umfassen, durch welches sie aktivierbar sind, und daß die Steuerklemmen der verschiedenen Servoelemente (50; 52; 96) mit Ausgängen einer Steuereinheit (58) verbunden sind, welche in Abhängigkeit von der gewählten Stellung eines Wählschalters (60) an nur jeweils einem einzigen ihrer Ausgänge ein Aktivierungssignal für eines der Servoelemente (50; 52; 96) bereitstellt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19529538A DE19529538A1 (de) | 1995-08-11 | 1995-08-11 | Ramme |
DE19529538 | 1995-08-11 | ||
PCT/EP1996/003470 WO1997007293A1 (de) | 1995-08-11 | 1996-08-06 | Ramme |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0843760A1 EP0843760A1 (de) | 1998-05-27 |
EP0843760B1 true EP0843760B1 (de) | 2000-12-27 |
Family
ID=7769242
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96929212A Expired - Lifetime EP0843760B1 (de) | 1995-08-11 | 1996-08-06 | Ramme |
Country Status (6)
Country | Link |
---|---|
US (1) | US6102133A (de) |
EP (1) | EP0843760B1 (de) |
CN (1) | CN1192794A (de) |
DE (2) | DE19529538A1 (de) |
TW (1) | TW323309B (de) |
WO (1) | WO1997007293A1 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10013270A1 (de) * | 2000-03-17 | 2001-09-20 | Krupp Berco Bautechnik Gmbh | Fluidbetriebenes Schlagwerk |
DE10115681A1 (de) * | 2001-03-29 | 2002-10-10 | Delmag Gmbh & Co Kg | Dieselbär |
US6736218B1 (en) | 2001-04-16 | 2004-05-18 | American Piledriving Equipment, Inc. | Diesel hammer systems and methods |
DE10123202A1 (de) * | 2001-05-12 | 2002-11-14 | Krupp Berco Bautechnik Gmbh | Verfahren und Vorrichtung zur Absicherung eines fluidbetriebenen Schlagwerks gegen Leerschläge |
US20040045727A1 (en) * | 2002-09-11 | 2004-03-11 | Allums Jeromy T. | Safe starting fluid hammer |
US7694747B1 (en) * | 2002-09-17 | 2010-04-13 | American Piledriving Equipment, Inc. | Preloaded drop hammer for driving piles |
DE102004062043A1 (de) * | 2004-12-23 | 2006-07-13 | Delmag Gmbh & Co. Kg | Dieselhammer |
US7854571B1 (en) | 2005-07-20 | 2010-12-21 | American Piledriving Equipment, Inc. | Systems and methods for handling piles |
NL1033528C2 (nl) * | 2007-03-09 | 2008-09-10 | Univ Eindhoven Tech | Hei-inrichting met dubbele ontbranding en werkwijze voor het werken met een dergelijke hei-inrichting. |
WO2010138751A2 (en) | 2009-05-27 | 2010-12-02 | American Piledriving Equipment, Inc. | Helmet adapter for pile drivers |
US8763719B2 (en) | 2010-01-06 | 2014-07-01 | American Piledriving Equipment, Inc. | Pile driving systems and methods employing preloaded drop hammer |
US8434969B2 (en) | 2010-04-02 | 2013-05-07 | American Piledriving Equipment, Inc. | Internal pipe clamp |
US20120292062A1 (en) * | 2011-05-20 | 2012-11-22 | American Piledriving Equipment, Inc. | Systems and methods for controlling diesel hammers |
US20130199813A1 (en) * | 2013-03-04 | 2013-08-08 | Global Piling Solutions, L.L.C. | Hydraulic Hammer |
NL2011166C2 (nl) * | 2013-07-15 | 2015-01-21 | Fistuca B V | Hei-inrichting en werkwijze voor de toepassing daarvan. |
EP2871287B1 (de) * | 2013-11-12 | 2016-06-08 | Delmag GmbH & Co. KG | Dieselramme |
EP2871286B1 (de) * | 2013-11-12 | 2016-03-23 | Delmag GmbH & Co. KG | Rammhammer |
EP2924170A1 (de) * | 2014-03-28 | 2015-09-30 | Delmag GmbH & Co. KG | Rammhammer |
EP2924171B1 (de) * | 2014-03-28 | 2016-07-13 | Delmag GmbH & Co. KG | Rammhammer |
US20160023336A1 (en) * | 2014-07-24 | 2016-01-28 | Taizhou Dajiang Ind. Co., Ltd. | Phase transition heat storage device |
US9724811B2 (en) * | 2014-07-24 | 2017-08-08 | Taizhou Dajiang Ind. Co., Ltd. | Steam powered nailing gun |
US9777725B2 (en) * | 2014-07-24 | 2017-10-03 | Taizhou Dajiang Ind. Co., Ltd. | High pressure water pump |
US20160221171A1 (en) * | 2015-02-02 | 2016-08-04 | Caterpillar Inc. | Hydraulic hammer having dual valve acceleration control system |
US10273646B2 (en) | 2015-12-14 | 2019-04-30 | American Piledriving Equipment, Inc. | Guide systems and methods for diesel hammers |
US10538892B2 (en) * | 2016-06-30 | 2020-01-21 | American Piledriving Equipment, Inc. | Hydraulic impact hammer systems and methods |
CN113339342B (zh) * | 2021-06-08 | 2023-02-07 | 山东临工工程机械有限公司 | 一种打桩机辅具液压系统及液压打桩机 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2755783A (en) * | 1953-06-18 | 1956-07-24 | Mckiernan Terry Corp | Free piston internal combustion pile hammer |
US3721095A (en) * | 1971-08-23 | 1973-03-20 | Bolt Associates Inc | Controllable force method and system of driving piles |
US4033139A (en) * | 1974-02-08 | 1977-07-05 | Frederick Leonard L | Pile driving hammer, apparatus and method |
NL172579C (nl) * | 1974-03-13 | 1983-09-16 | Delmag Maschinenfabrik | Dieselheiblok met slagverstuiving van de brandstof tussen heiblokzuiger en slagstuk. |
US4109475A (en) * | 1974-12-10 | 1978-08-29 | Van Kooten B.V. | Pile-driving ram and method of controlling the same |
US4007803A (en) * | 1976-01-19 | 1977-02-15 | Atlantic Richfield Company | Expanding detonation chamber multi-shot gas exploder |
GB1572349A (en) * | 1976-05-21 | 1980-07-30 | Bsp Int Foundation | Drop hammers |
US4131164A (en) * | 1977-11-23 | 1978-12-26 | Chambersburg Engineering Company | Adaptive valve control system for an impact device |
US4187917A (en) * | 1977-11-30 | 1980-02-12 | Hydroacoustics, Inc. | Pile driver |
US4580641A (en) * | 1983-04-28 | 1986-04-08 | Raymond International Builders, Inc. | Method and apparatus for starting diesel type hammers |
DE4414190C1 (de) * | 1994-04-24 | 1995-07-06 | Delmag Maschinenfabrik | Dieselramme |
-
1995
- 1995-08-11 DE DE19529538A patent/DE19529538A1/de not_active Withdrawn
-
1996
- 1996-08-06 WO PCT/EP1996/003470 patent/WO1997007293A1/de active IP Right Grant
- 1996-08-06 EP EP96929212A patent/EP0843760B1/de not_active Expired - Lifetime
- 1996-08-06 DE DE59606259T patent/DE59606259D1/de not_active Expired - Fee Related
- 1996-08-06 US US09/000,322 patent/US6102133A/en not_active Expired - Fee Related
- 1996-08-06 CN CN96196148A patent/CN1192794A/zh active Pending
- 1996-08-09 TW TW085109668A patent/TW323309B/zh active
Also Published As
Publication number | Publication date |
---|---|
TW323309B (de) | 1997-12-21 |
US6102133A (en) | 2000-08-15 |
CN1192794A (zh) | 1998-09-09 |
EP0843760A1 (de) | 1998-05-27 |
DE19529538A1 (de) | 1997-02-13 |
DE59606259D1 (de) | 2001-02-01 |
WO1997007293A1 (de) | 1997-02-27 |
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