EP0590335B1 - Boring ram - Google Patents
Boring ram Download PDFInfo
- Publication number
- EP0590335B1 EP0590335B1 EP93114008A EP93114008A EP0590335B1 EP 0590335 B1 EP0590335 B1 EP 0590335B1 EP 93114008 A EP93114008 A EP 93114008A EP 93114008 A EP93114008 A EP 93114008A EP 0590335 B1 EP0590335 B1 EP 0590335B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing
- boring machine
- bearing ring
- machine according
- control pipe
- 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
- 238000009527 percussion Methods 0.000 claims description 10
- 230000000717 retained effect Effects 0.000 claims 1
- 230000036316 preload Effects 0.000 description 7
- 230000035939 shock Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/06—Down-hole impacting means, e.g. hammers
- E21B4/14—Fluid operated hammers
- E21B4/145—Fluid operated hammers of the self propelled-type, e.g. with a reverse mode to retract the device from the hole
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/24—Damping the reaction force
Definitions
- the invention relates to a ram boring machine with an impact piston which is axially movable in a housing, a control tube which controls the movement of the impact piston and is connected to a compressed air hose, and an elastic intermediate piece arranged between the housing and the control tube.
- a ram boring machine of this type has become known from German Offenlegungsschrift 38 31 882.
- the elastic intermediate piece acts as a damping block and absorbs inevitable shocks and vibrations during operation of the device in order to keep them as far as possible from reversing.
- the known ram boring machine has radial projections on the head tube and / or on the housing, between which the intermediate piece is held on the head tube and / or in the housing. Due to the elastic intermediate piece between the housing and the head tube, the vibrations and shocks caused by the rapid piston strokes are only dampened and transmitted to the head tube and the connection to the compressed air hose.
- the head tube with the hose connection is no longer exposed to the strong shocks and vibrations of the housing, so that there is no risk of it coming loose automatically. Therefore leaves the compressed air hose is advantageously fastened to the head tube by means of a screw coupling. Overall, the ram boring machine has a longer service life.
- the elastic intermediate piece can show signs of wear and / or damage after prolonged use, mostly due to improper installation, which can be attributed to the elastic intermediate piece on the head tube and / or in the housing being too loose.
- the invention is therefore based on the object to improve the known ram boring machine so that there is a considerable extension of the life of the elastic intermediate piece and this only needs to be replaced after a longer operating time, after which maintenance of the ram boring machine is required anyway.
- the elastic intermediate piece is held under axial prestress by holding elements at least on the housing, possibly also on the head tube.
- the elastic intermediate piece is not yet under the axial pretension, it can be easily pushed onto the head tube and / or inserted into the housing; however, it is fixed and secured not only in the axial but also in the radial direction by the axial prestressing, so that no wear or damage caused by relative movements can occur between the elastic intermediate piece and the housing and / or the head tube.
- the holding elements can consist of a radial projection on the housing and / or the control tube and a Housing and / or the control tube axially braced support ring exist.
- This support ring can be axially braced and held by axially parallel clamping screws acting on the housing and / or on the head tube. These clamping screws can be screwed axially into the rear end of the housing.
- the support ring can also project beyond the outer diameter of the housing at least in regions.
- a clamping ring is arranged adjacent to a shoulder or a conical region of the housing, and the clamping screws can be arranged between the support ring and the clamping ring on the outside of the housing.
- this embodiment is essentially advantageous if an expansion cone is arranged on the housing of the ram boring machine, with which holes in the ground with a larger diameter than the diameter of the ram boring machine are produced to let.
- the axial preload can also be applied to the elastic intermediate piece with a device that does not permanently remain on the ram boring device, which engages on the support ring and displaces it in the housing of the ram boring machine until it is aligned with radial bores in the housing, through which radial retaining screws then extend have the support ring screwed in.
- a percussion piston moves back and forth in the housing, the movement of which is controlled by means of a control sleeve arranged on a control tube 2, by supplying compressed air to the percussion piston via a bore 15 in the control tube 2.
- a compressed air hose not shown, is screwed onto a thread 3.
- the control tube 2 is connected to the housing 1 by means of an elastic intermediate piece 6.
- the elastic intermediate piece 6 consists, for example, of rubber or polyurethane and prevents the impacts and vibrations transmitted to the housing 1 by the percussion piston from reaching the control tube 2 and the compressed air hose without being damped.
- the compressed air supplied through the bore 15 in the control tube 2 escapes into the atmosphere after the working strokes of the percussion piston via axial air outlet openings 7, which run concentrically to the control tube 2, in the intermediate piece 6.
- the intermediate piece 6 is fixed with the head tube 2 by a front radial circumferential projection and a rear radial circumferential projection 5 in the axial direction.
- the rear circumferential projection 5 is shown here in one piece with the head tube 2 for the sake of simplicity, but can be designed as a support ring, similar to the support ring 9 or 16 described below on the housing 1.
- the housing 1 has a radial, circumferential projection 8 in the region of the elastic intermediate piece 6 which rests the elastic intermediate piece 6 with its front end.
- an axially projecting, cylindrical extension 10 of the support ring 9 engages.
- This support ring 9 rests only with this axially projecting cylindrical projection 10 on the elastic intermediate piece 6, but not on the rear end of the housing 1.
- the support ring 9 and the rear end of the outer surface of the housing touch each other via conical surfaces, which limit the preload and prevent vibrations of the support ring.
- the support ring 9 also has a radial projection 11, for example in the form of a diameter enlargement which projects beyond the outer diameter of the housing 1.
- a clamping ring 12 is arranged axially offset and bears against a conical region 13 of the housing 1.
- Several clamping screws 14 are evenly distributed on the circumference of the housing 1 and arranged in bores in the radial projection 11 of the support ring 9 and in the clamping ring 12.
- the elastic intermediate piece 6 with the head tube 2 already attached to it is inserted into the housing 1 to the radial projection 8, which can be accomplished easily and without the use of tools, since there is no clamping fit between the elastic intermediate piece 6 and the housing 1 . Then the support ring 9 is attached, and the clamping screws 14 are tightened until the required axial preload of the elastic intermediate piece 6 is reached.
- axially bracing the elastic intermediate piece 6 a radial bracing of the elastic intermediate piece 6 in the bore in the housing 1 is simultaneously achieved, so that a firm fit of the elastic intermediate piece is ensured during operation.
- the embodiment according to FIG. 2 uses a clamping ring 16, which is initially displaced axially so far by means of an auxiliary device, not shown, until the required axial preload is applied to the elastic intermediate piece 6.
- a clamping ring 16 which is initially displaced axially so far by means of an auxiliary device, not shown, until the required axial preload is applied to the elastic intermediate piece 6.
- radial bores in the support ring 16 are aligned with corresponding bores in the housing 1, so that radial retaining screws 17 can be inserted into these bores.
- the auxiliary device for applying the axial preload can be released from the ram boring machine.
- the support ring can also be held in the housing by a snap ring or by a bayonet connection.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Description
Die Erfindung betrifft ein Rammbohrgerät mit einem in einem Gehäuse axial beweglichen Schlagkolben, einem die Bewegung des Schlagkolbens steuernden, mit einem Druckluftschlauch verbundenen Steuerrohr und einem zwischen dem Gehäuse und dem Steuerrohr angeordneten elastischen Zwischenstück.The invention relates to a ram boring machine with an impact piston which is axially movable in a housing, a control tube which controls the movement of the impact piston and is connected to a compressed air hose, and an elastic intermediate piece arranged between the housing and the control tube.
Ein Rammbohrgerät dieser Art ist durch die deutsche Offenlegungsschrift 38 31 882 bekanntgeworden. Das elastische Zwischenstück wirkt dort als Dämpfungsblock und nimmt beim Betrieb des Gerätes unvermeidliche Erschütterungen und Vibrationen auf, um diese weitestgehend von der Umsteuerung fernzuhalten. Zur Erleichterung der Montage des Steuerrohrs und des Dämpfungsblocks weist das bekannte Rammbohrgerät am Steuerrohr und/oder am Gehäuse radiale Vorsprünge auf, zwischen denen das Zwischenstück am Steuerrohr und/oder im Gehäuse gehalten ist. Aufgrund des elastischen Zwischenstücks zwischen dem Gehäuse und dem Steuerrohr werden die durch die schnellen Kolbenschläge hervorgerufenen Schwingungen und Stöße nur noch gedämpft auf das Steuerrohr und die Verbindung mit dem Druckluftschlauch übertragen. Dadurch lassen sich Schwingungsbrüche, insbesondere im hinteren Bereich des Gehäuses auch bei längerem Einsatz und schwierigen Einsatzbedingungen vermeiden. Auch das Steuerrohr mit der Schlauchverbindung ist nicht mehr den starken Schlägen und Schwingungen des Gehäuses ausgesetzt, so daß nicht die Gefahr eines selbsttätigen Lösens besteht. Daher läßt sich der Druckluftschlauch vorteilhaft mittels einer Schraubkupplung am Steuerrohr befestigen. Insgesamt ergibt sich so eine längere Lebensdauer des Rammbohrgeräts.A ram boring machine of this type has become known from German Offenlegungsschrift 38 31 882. The elastic intermediate piece acts as a damping block and absorbs inevitable shocks and vibrations during operation of the device in order to keep them as far as possible from reversing. To facilitate the assembly of the head tube and the damping block, the known ram boring machine has radial projections on the head tube and / or on the housing, between which the intermediate piece is held on the head tube and / or in the housing. Due to the elastic intermediate piece between the housing and the head tube, the vibrations and shocks caused by the rapid piston strokes are only dampened and transmitted to the head tube and the connection to the compressed air hose. This prevents vibrations from breaking, particularly in the rear area of the housing, even during extended use and difficult operating conditions. The head tube with the hose connection is no longer exposed to the strong shocks and vibrations of the housing, so that there is no risk of it coming loose automatically. Therefore leaves the compressed air hose is advantageously fastened to the head tube by means of a screw coupling. Overall, the ram boring machine has a longer service life.
Im Betrieb hat sich indessen herausgestellt, daß sich am elastischen Zwischenstück zumeist aufgrund nicht sachgemäßer Montage nach einem längeren Einsatz Abnutzungserscheinungen und/oder Beschädigungen ergeben können, die auf einen zu lockeren Sitz des elastischen Zwischenstücks am Steuerrohr und/oder im Gehäuse zurückzuführen sind.In operation, however, it has been found that the elastic intermediate piece can show signs of wear and / or damage after prolonged use, mostly due to improper installation, which can be attributed to the elastic intermediate piece on the head tube and / or in the housing being too loose.
Der Erfindung liegt daher die Aufgabe zugrunde, das bekannte Rammbohrgerät so zu verbessern, daß sich eine erhebliche Verlängerung der Lebensdauer des elastischen Zwischenstücks ergibt und dieses erst nach einer längeren Betriebszeit, nach der ohnehin eine Wartung des Rammbohrgeräts erforderlich ist, ausgewechselt zu werden braucht.The invention is therefore based on the object to improve the known ram boring machine so that there is a considerable extension of the life of the elastic intermediate piece and this only needs to be replaced after a longer operating time, after which maintenance of the ram boring machine is required anyway.
Die Lösung dieser Aufgabe besteht darin, daß bei einem Rammbohrgerät der eingangs erwähnten Art erfindungsgemäß, das elastische Zwischenstück durch Halteelemente wenigstens am Gehäuse, ggf. auch am Steuerrohr unter axialer Vorspannung gehalten wird. Solange das elastische Zwischenstück noch nicht unter der axialen Vorspannung steht, läßt es sich mühelos auf das Steuerrohr aufschieben und/oder in das Gehäuse einschieben; es wird jedoch durch die axiale Vorspannung nicht nur in axialer, sondern auch in radialer Richtung festgelegt und gesichert, so daß sich zwischen dem elastischen Zwischenstück und dem Gehäuse und/oder dem Steuerrohr keine durch Relativbewegungen bedingten Abnutzungen oder Beschädigungen ergeben können.The solution to this problem is that in a ram boring machine of the type mentioned at the outset, the elastic intermediate piece is held under axial prestress by holding elements at least on the housing, possibly also on the head tube. As long as the elastic intermediate piece is not yet under the axial pretension, it can be easily pushed onto the head tube and / or inserted into the housing; however, it is fixed and secured not only in the axial but also in the radial direction by the axial prestressing, so that no wear or damage caused by relative movements can occur between the elastic intermediate piece and the housing and / or the head tube.
Die Halteelemente können aus einem radialen Vorsprung am Gehäuse und/oder dem Steuerrohr und einem bezüglich des Gehäuses und/oder des Steuerrohrs axial verspannbaren Stützring bestehen. Dieser Stützring läßt sich durch am Gehäuse und/oder am Steuerrohr angreifende achsparallele Spannschrauben axial verspannen und halten. Diese Spannschrauben können axial in das rückwärtige Ende des Gehäuses eingeschraubt sein. Der Stützring kann auch den Außendurchmesser des Gehäuses wenigstens bereichsweise überragen. In diesem Fall ist ein Spannring an einem Ansatz oder einem kegeligen Bereich des Gehäuses anliegend angeordnet, und die Spannschrauben können zwischen dem Stützring und dem Spannring außen am Gehäuse angeordnet sein.The holding elements can consist of a radial projection on the housing and / or the control tube and a Housing and / or the control tube axially braced support ring exist. This support ring can be axially braced and held by axially parallel clamping screws acting on the housing and / or on the head tube. These clamping screws can be screwed axially into the rear end of the housing. The support ring can also project beyond the outer diameter of the housing at least in regions. In this case, a clamping ring is arranged adjacent to a shoulder or a conical region of the housing, and the clamping screws can be arranged between the support ring and the clamping ring on the outside of the housing.
Da in diesem Fall der Stützring und der Spannring den Außendurchmesser des Gerätegehäuses überragen, ist diese Ausführung im wesentlichen dann von Vorteil, wenn am Gehäuse des Rammbohrgeräts ein Aufweitkonus angeordnet ist, mit dem sich Bohrungen im Erdreich mit einem größeren Durchmesser als der Durchmesser des Rammbohrgeräts herstellen lassen.In this case, since the support ring and the clamping ring protrude beyond the outer diameter of the device housing, this embodiment is essentially advantageous if an expansion cone is arranged on the housing of the ram boring machine, with which holes in the ground with a larger diameter than the diameter of the ram boring machine are produced to let.
Die axiale Vorspannung läßt sich auf das elastische Zwischenstück auch mit einer nicht dauernd am Rammbohrgerät verbleibenden Vorrichtung aufbringen, die am Stützring angreift und diesen so weit im Gehäuse des Rammbohrgeräts verschiebt, bis er mit radialen Bohrungen im Gehäuse fluchtet, durch die sich dann radiale Halteschrauben in den Stützring einschrauben lassen.The axial preload can also be applied to the elastic intermediate piece with a device that does not permanently remain on the ram boring device, which engages on the support ring and displaces it in the housing of the ram boring machine until it is aligned with radial bores in the housing, through which radial retaining screws then extend have the support ring screwed in.
Ebenso ist es möglich, den Stützring durch eine Bajonettverbindung unter axialer Vorspannung im Gehäuse zu halten.It is also possible to hold the support ring in the housing by means of a bayonet connection under axial pretension.
Die Erfindung wird nachstehend anhand zweier in der Zeichnung dargestellter Ausführungsbeispiele des näheren erläutert. In der Zeichnung zeigen:
- Fig. 1
- ein am rückwärtigen Ende geschnittenes Rammbohrgerät und
- Fig. 2
- eine andere Ausführung des Rammbohrgeräts.
- Fig. 1
- a ram boring machine cut at the rear end and
- Fig. 2
- another version of the ram boring machine.
Von dem Rammbohrgerät ist nur das Gehäuse 1 dargestellt, das an seinem rückwärtigen Ende teilweise geschnitten dargestellt ist. Ein nicht dargestellter Schlagkolben bewegt sich in dem Gehäuse hin und her, dessen Bewegung mittels einer an einem Steuerrohr 2 angeordneten Steuerhülse gesteuert wird, indem dem Schlagkolben Druckluft über eine Bohrung 15 des Steuerrohrs 2 zugeführt wird. Auf ein Gewinde 3 ist ein nicht dargestellter Druckluftschlauch geschraubt. Das Steuerrohr 2 ist mittels eines elastischen Zwischenstücks 6 mit dem Gehäuse 1 verbunden. Das elastische Zwischenstück 6 besteht beispielsweise aus Gummi- oder Polyurethan und verhindert, daß die durch den Schlagkolben auf das Gehäuse 1 übertragenen Schläge und Schwingungen ungedämpft auf das Steuerrohr 2 und den Druckluftschlauch gelangen. Die durch die Bohrung 15 im Steuerrohr 2 zugeführte Druckluft entweicht nach den Arbeitshüben des Schlagkolbens über axiale, konzentrisch zum Steuerrohr 2 verlaufende Luftaustrittsöffnungen 7 im Zwischenstück 6 in die Atmosphäre.Of the ram boring machine, only the housing 1 is shown, which is shown partially cut at its rear end. A percussion piston, not shown, moves back and forth in the housing, the movement of which is controlled by means of a control sleeve arranged on a
Das Zwischenstück 6 ist mit dem Steuerrohr 2 durch einen vorderen radialen umlaufenden Vorsprung und einen hinteren radialen umlaufenden Vorsprung 5 in axialer Richtung festgelegt. Der hintere umlaufende Vorsprung 5 ist hier der Einfachheit halber einstückig mit dem Steuerrohr 2 dargestellt, kann jedoch als Stützring, ähnlich wie der nachstehend beschriebene Stützring 9 bzw. 16 am Gehäuse 1 ausgebildet sein.The
Das Gehäuse 1 weist im Bereich des elastischen Zwischenstücks 6 einen radialen, umlaufenden Vorsprung 8 auf, an dem das elastische Zwischenstück 6 mit seinem vorderen Ende anliegt. Am hinteren Ende des elastischen Zwischenstücks 6 greift ein axial vorstehender, zylindrischer Ansatz 10 des Stützrings 9 an. Dieser Stützring 9 liegt nur mit diesem axial vorstehenden zylindrischen Ansatz 10 am elastischen Zwischenstück 6, nicht aber am hinteren Ende des Gehäuses 1 an. Der Stützring 9 und das rückwärtige Ende der Mantelfläche des Gehäuses berühren einander über Konusflächen, die eine Begrenzung der Vorspannung bewirken und Vibrationen des Stützrings verhindern.The housing 1 has a radial,
Der Stützring 9 weist des weiteren einen radialen Überstand 11, beispielsweise in Gestalt einer den Außendurchmesser des Gehäuses 1 überragenden Durchmesservergrößerung auf. Axial versetzt ist ein Spannring 12 angeordnet, der an einem kegeligen Bereich 13 des Gehäuses 1 anliegt. Mehrere Spannschrauben 14 sind gleichmäßig auf dem Umfang des Gehäuses 1 verteilt und in Bohrungen im radialen Überstand 11 des Stützrings 9 sowie im Spannring 12 angeordnet.The
Zur Montage wird das elastische Zwischenstück 6 mit dem daran bereits befestigten Steuerrohr 2 in das Gehäuse 1 zu dem radialen Vorsprung 8 eingeschoben, was sich leicht und ohne Zuhilfenahme von Werkzeugen bewerkstelligen läßt, da zwischen dem elastischem Zwischenstück 6 und dem Gehäuse 1 keine Klemmpassung vorhanden ist. Danach wird der Stützring 9 angesetzt, und die Spannschrauben 14 werden angezogen, bis die erforderliche axiale Vorspannung des elastischen Zwischenstücks 6 erreicht ist. Durch das axiale Verspannen des elastischen Zwischenstücks 6 wird gleichzeitig ein radiales Verspannen des elastischen Zwischenstücks 6 in der Bohrung im Gehäuse 1 erreicht, so daß im Betrieb ein fester Sitz des elastischen Zwischenstücks gewährleistet ist.For assembly, the elastic
Während bei der Ausführung gemäß Fig. 1 die axiale Vorspannung auf das elastische Zwischenstück 6 durch die Befestigung am Gehäuse 1 selbst aufgebracht wird, benutzt die Ausführung gemäß Fig. 2 einen Spannring 16, der mittels einer nicht dargestellten Hilfsvorrichtung zunächst axial so weit verschoben wird, bis die erforderliche axiale Vorspannung auf das elastische Zwischenstück 6 aufgebracht ist. In der dann erreichten Spannstellung fluchten radiale Bohrungen im Stützring 16 mit entsprechenden Bohrungen im Gehäuse 1, so daß sich radiale Halteschrauben 17 in diese Bohrungen einsetzen lassen. Danach läßt sich die Hilfsvorrichtung zum Aufbringen der axialen Vorspannung vom Rammbohrgerät lösen.1, the axial preload is applied to the elastic
Wird eine Hilfsvorrichtung zum Aufbringen der axialen Vorspannung verwendet, läßt sich der Stützring im Gehäuse auch durch einen Sprengring oder durch eine Bajonettverbindung halten.If an auxiliary device is used to apply the axial preload, the support ring can also be held in the housing by a snap ring or by a bayonet connection.
Claims (6)
- A percussion boring machine comprising an impact piston axially movable in a housing (1), a control pipe (2) controlling the movement of the impact piston and connected to a compressed air hose, and a separator (6) fitted between the housing and the control pipe and held at least on the housing by retaining elements (4, 5; 8, 9; 16, 17), characterised in that the elastic separator (6) is held under axial prestress.
- A percussion boring machine according to claim 1, characterised in that the retaining elements comprise a radial projection (8) on the housing and/or on the control pipe (2) and a bearing ring (9, 16) that can be axially stressed with respect to the housing and/or the control pipe.
- A percussion boring machine according to claim 2, characterised in that the bearing ring (9) is axially stressed and retained by means of clamping bolts (14) disposed parallel to the axis that engage with the housing (1) and/or the control pipe (2).
- A percussion boring machine according to claim 3, characterised in that the bearing ring (9) projects at least locally beyond the external diameter of the housing (1), a straining ring (12) bears on a shoulder or a conical region (13) of the housing (1) and the clamping bolts (14) are fitted between the bearing ring (9) and the straining ring (12).
- A percussion boring machine according to claim 2, characterised in that the bearing ring (16) is held under axial prestress by means of bolts or screws (17) passing radially through the housing (1) and the bearing ring.
- A percussion boring machine according to claim 2, characterised in that the bearing ring is held under axial prestress in the housing by means of a bayonet connection.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4231400A DE4231400C1 (en) | 1992-09-19 | 1992-09-19 | Ram drilling machine |
| DE4231400 | 1992-09-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0590335A1 EP0590335A1 (en) | 1994-04-06 |
| EP0590335B1 true EP0590335B1 (en) | 1997-04-16 |
Family
ID=6468346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93114008A Expired - Lifetime EP0590335B1 (en) | 1992-09-19 | 1993-09-02 | Boring ram |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5558167A (en) |
| EP (1) | EP0590335B1 (en) |
| JP (1) | JP2887052B2 (en) |
| DE (1) | DE4231400C1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19650014C2 (en) * | 1996-12-03 | 2002-04-11 | Tracto Technik | Ram boring machine |
| DE19830428C2 (en) * | 1998-03-21 | 2001-02-15 | Tracto Technik | Positive connection between a pipe and a stop ring inserted into the pipe for the percussion piston of a ram boring machine |
| JP4575457B2 (en) * | 2004-12-07 | 2010-11-04 | リム、ビョン−ドク | Excavation air hammer and driving method thereof (Around drillinghammerandthedriving method) |
| US20070246237A1 (en) * | 2006-04-24 | 2007-10-25 | Emile Homsi | Vibration dampening of a power tool |
| JP2018111961A (en) * | 2017-01-10 | 2018-07-19 | 旭化成建材株式会社 | Pile driving method |
| CN115228028B (en) * | 2022-06-14 | 2023-08-25 | 河南理工大学 | Portable fire-suppression explosion-suppression fire gun and method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1248481A (en) * | 1916-08-09 | 1917-12-04 | Cleveland Rock Drill Co | Fluid-operated drill. |
| US1554985A (en) * | 1924-04-03 | 1925-09-29 | Ingersoll Rand Co | Water head |
| US3756328B1 (en) * | 1970-01-19 | 1991-01-29 | Pneumatically operated impact-action self-propelled mechanism | |
| NL189974C (en) * | 1980-04-08 | 1993-09-16 | Rotterdamsche Droogdok Mij | PILOT. |
| GB8325378D0 (en) * | 1983-09-22 | 1983-10-26 | Kayes Eng Ltd | Impact-action self-propelled mechanism |
| US4809789A (en) * | 1986-08-06 | 1989-03-07 | Oklahoma Airrow, Inc. | Finned impact operating boring tool |
| DE3833882C2 (en) * | 1988-10-05 | 1996-07-04 | Tracto Technik | Ram drilling machine |
-
1992
- 1992-09-19 DE DE4231400A patent/DE4231400C1/en not_active Expired - Fee Related
-
1993
- 1993-09-02 EP EP93114008A patent/EP0590335B1/en not_active Expired - Lifetime
- 1993-09-17 JP JP5231829A patent/JP2887052B2/en not_active Expired - Fee Related
- 1993-09-17 US US08/123,301 patent/US5558167A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0590335A1 (en) | 1994-04-06 |
| JPH06235217A (en) | 1994-08-23 |
| JP2887052B2 (en) | 1999-04-26 |
| DE4231400C1 (en) | 1994-01-05 |
| US5558167A (en) | 1996-09-24 |
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