EP0496924B1 - Method and apparatus for laying underground pipes - Google Patents

Method and apparatus for laying underground pipes Download PDF

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Publication number
EP0496924B1
EP0496924B1 EP91101325A EP91101325A EP0496924B1 EP 0496924 B1 EP0496924 B1 EP 0496924B1 EP 91101325 A EP91101325 A EP 91101325A EP 91101325 A EP91101325 A EP 91101325A EP 0496924 B1 EP0496924 B1 EP 0496924B1
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EP
European Patent Office
Prior art keywords
pipe
movement
oscillator
drive
tube
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Expired - Lifetime
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EP91101325A
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German (de)
French (fr)
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EP0496924A1 (en
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Helmuth Römer
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Individual
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Individual
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Priority to DE91101325T priority Critical patent/DE59100695D1/en
Priority to EP91101325A priority patent/EP0496924B1/en
Priority to AT91101325T priority patent/ATE98335T1/en
Priority to DK011692A priority patent/DK11692A/en
Publication of EP0496924A1 publication Critical patent/EP0496924A1/en
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Publication of EP0496924B1 publication Critical patent/EP0496924B1/en
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses

Definitions

  • the invention relates to a method and a device for underground driving of pipes.
  • the pipe is hammered into the ground with the aid of a compressed air driven ram, precautions being taken so that the core material displaced into the pipe interior during the advance can escape at the rear pipe end.
  • a drill bit placed on the front pipe end is provided with complex flushing devices for the continuous removal of the core material (DE-U-83 20 972).
  • complex flushing devices for the continuous removal of the core material (DE-U-83 20 972).
  • the invention has for its object the removal of the core material out of the pipe during jacking.
  • the invention is based on the idea of executing the oscillating movement which is superimposed on the linear propulsion movement so asymmetrically that the lifting speed is greater in the forward direction than in the reverse direction.
  • the oscillating movement which actually serves to generate ramming impacts for the advance of the pipe, also has the effect that the core material in the pipe is transported backwards.
  • the soil lying in the pipe is carried along due to the relatively high static friction.
  • the acceleration of the tube becomes so great that the static friction is not sufficient to take the core material forward again. In this way, the core material is actively transported to the rear end of the tube, similar to an oscillating conveyor.
  • Another advantage of the invention is that due to the lower Speed during the reverse stroke with a given drive power a higher force is available to clear the pipe again. In this way, trouble-free operation is achieved even in unfavorable ground conditions, in which the pipe tends to jam in the borehole.
  • the oscillating movement of the tube can be generated, for example, with the aid of a crank mechanism with a rocker arm, a linear motor with suitable control or an arrangement of single or double-acting hydraulic cylinders.
  • the oscillator can be adjusted so that the speed difference between the forward stroke and the reverse stroke is optimized with regard to the pipe diameter, the condition of the ground and the like.
  • a ramming device 12 is installed in a start-up shaft 10, with which a pipe 14 is driven approximately horizontally into the soil 16.
  • the ramming device has a carriage 18 which is adjusted with feet 20 on the bottom of the approach shaft 10 and which is stamped at its end opposite to the direction of advance of the tube supports the rear wall of the approach shaft.
  • a carriage 24 is guided on the carriage 18 and can be driven linearly in the longitudinal direction of the pipe 14 by means of a propulsion device 26 in order to press the pipe into the ground.
  • the carriage 24 in turn carries a tube holder 28, which is guided in the longitudinal direction of the tube 14 and has clamping devices 30, in which the tube 14 is firmly clamped.
  • the tube holder 28 can be moved back and forth relative to the slide 24, so that the tube 14 executes a longitudinal vibration superimposed on the continuous propulsion movement.
  • the front pipe end 34 thus exerts ramming impacts on the ground, so that the penetration of the pipe into the ground is promoted.
  • the oscillator 32 is designed such that the propulsion stroke - to the left in FIG. 1 - takes place at a greater speed than the reverse stroke relative to the carriage 24. As a result, the core material 36 is gradually transported to the rear pipe end and falls to the bottom of the approach shaft 10.
  • the oscillator 32 is, for example, a mechanical oscillator, the principle of which will be explained below with reference to FIG. 2.
  • FIG. 2 shows a part of the pipe holder 28 that is guided in a horizontal direction, parallel to the axis of the pipe 14 in FIG. 1.
  • a slide rail for a pin 40 of a rocker 42 is formed by two projections 38 projecting parallel to one another at right angles to the longitudinal direction of the tube holder.
  • the rocker 42 formed by two parallel rails is fastened at its opposite end to a rotatable axis 44 and can thus be pivoted in the direction of the arrows A.
  • a crank disk 46 driven by a motor has an eccentric crank pin 48 which engages between the two rails of the rocker 42.
  • the speed of the tube holder 28 is proportional to the speed of the transverse movement of the crank pin 48 (parallel to the double arrow C) and inversely proportional to the respective one Distance between the crank pin 48 and the axis 44.
  • the position of the crank pin 48 shown in solid lines in FIG. 2 corresponds to a position shortly before the front turning point. If the crank pin moves through the position 48 ′ during the subsequent reverse stroke, its distance from the axis 44 is relatively large and the stroke speed of the tube holder 28 is therefore only low. If, on the other hand, the crank pin moves through the position 48 ′′ during the forward stroke, its distance from the axis 44 is considerably smaller, so that a significantly higher stroke speed results during the forward stroke.
  • the ratio of the speeds of the tube holder 28 during the forward and reverse stroke can be varied continuously.

Abstract

Method of laying underground pipes in which an oscillating movement in the longitudinal direction is superimposed on the driving movement of the pipe (14), characterised in that the oscillating movement takes place with a greater stroke speed in the driving direction than in the opposite direction. <IMAGE>

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum unterirdischen Vortreiben von Rohren.The invention relates to a method and a device for underground driving of pipes.

Es sind Verfahren zum grabenlosen Verlegen von Rohrleitungen unter Bahndämmen und dergleichen bekannt, bei denen die zu verlegenden Rohre nacheinander von einem Anfahrschacht aus direkt in das Erdreich vorgetrieben werden, ohne daß zuvor ein Tunnel gebohrt wird.Methods for trenchless laying of pipelines under railway embankments and the like are known, in which the pipes to be laid are driven one after the other directly into the ground from an approach shaft without a tunnel having to be drilled beforehand.

Bei einigen bekannten Verfahren wird das Rohr mit Hilfe einer preßluftgetriebenen Ramme in das Erdreich eingeschlagen, wobei man Vorkehrungen dafür trifft, daß das beim Vortrieb in das Rohrinnere verdrängte Kernmaterial am rückwärtigen Rohrende austreten kann. In einigen Fällen ist eine auf das vordere Rohrende aufgesetzte Bohrkrone mit aufwendigen Spüleinrichtungen für den kontinuierlichen Abtransport des Kernmaterials versehen (DE-U-83 20 972). Zur Verbesserung des Rohrvortriebs ist es darüber hinaus bekannt, das Rohr in Querschwingungen rechtwinklig zu seiner Längsachse zu versetzen (DE-C-31 29 722).In some known methods, the pipe is hammered into the ground with the aid of a compressed air driven ram, precautions being taken so that the core material displaced into the pipe interior during the advance can escape at the rear pipe end. In some cases, a drill bit placed on the front pipe end is provided with complex flushing devices for the continuous removal of the core material (DE-U-83 20 972). To improve the pipe jacking, it is also known to set the pipe in transverse vibrations perpendicular to its longitudinal axis (DE-C-31 29 722).

Aus der DE-C-39 20 567 ist ein Verfahren bekannt, bei dem das Rohr mit Hilfe einer Vortriebseinrichtung kontinuierlich in den Boden eingepreßt wird und bei dem dieser Vortriebsbewegung eine oszillierende Bewegung des Rohres in Längsrichtung überlagert ist. Das Rohr wird in eine Halterung eingespannt, die mit Hilfe eines Oszillators relativ zu einem Schlitten beweglich ist, und der Schlitten wird seinerseits in Vortriebsrichtung des Rohres angetrieben. Der Oszillator wird durch eine von einem Motor angetriebene Kreisscheibe gebildet, auf der außermittig ein Kurbelzapfen befestigt ist, der in eine mit der Rohrhalterung verbundene Gleitschiene eingreift. Dieser Oszillator erzeugt somit eine Sinusschwingung, bei der die Hubgeschwindigkeiten in beiden Richtungen gleich groß sind. Die Überlagerung dieser harmonischen Schwingung mit der wesentlich langsameren axialen Vortriebsbewegung des Rohres führt dazu, daß die Vorwärtsbewegung des Rohres mit einer geringfügig größeren Geschwindigkeit erfolgt als die Rückwärtsbewegung. Dieser Effekt ist bei dem herkömmlichen Verfahren jedoch vernachlässigbar und hat keine praktischen Auswirkungen.From DE-C-39 20 567 a method is known in which the pipe is continuously pressed into the ground with the aid of a jacking device and in which this jacking movement is superimposed on an oscillating movement of the pipe in the longitudinal direction. The tube is clamped in a holder which is movable relative to a slide by means of an oscillator, and the slide is in turn driven in the direction of advance of the tube. The oscillator is formed by a circular disk driven by a motor, on which a crank pin is attached off-center and engages in a slide rail connected to the tube holder. This oscillator thus generates a sine wave in which the stroke speeds are the same in both directions. The superimposition of this harmonic vibration with the much slower axial propulsion movement of the pipe leads to the pipe moving forward at a slightly higher speed than the backward movement. However, this effect is negligible in the conventional method and has no practical effects.

Der Erfindung liegt die Aufgabe zugrunde, den Abtransport des Kernmaterials aus dem Rohr während des Vortriebs zu verbessern.The invention has for its object the removal of the core material out of the pipe during jacking.

Diese Aufgabe wird erfindungsgemäß gelöst durch das Verfahren nach Anspruch 1 und durch eine Vorrichtung zur Durchführung dieses Verfahrens gemäß Anspruch 2.This object is achieved according to the invention by the method according to claim 1 and by an apparatus for performing this method according to claim 2.

Die Erfindung beruht auf dem Gedanken, die oszillierende Bewegung, die der linearen Vortriebsbewegung überlagert wird, derart unsymmetrisch auszuführen, daß die Hubgeschwindigkeit in Vorwärtsrichtung größer ist als in Rückwärtsrichtung. Unter diesen Umständen hat die oszillierende Bewegung, die eigentlich dazu dient, Rammschläge für den Vortrieb des Rohres zu erzeugen, zugleich den Effekt, daß das Kernmaterial im Rohr nach hinten transportiert wird. Bei der relativ langsamen Rückwärtsbewegung des Rohres wird das im Rohr liegende Erdreich aufgrund der verhältnismäßig hohen Haftreibung mitgenommen. Bei der schnelleren Vorwärtsbewegung des Rohres wird die Beschleunigung des Rohres jedoch so groß, daß die Haftreibung nicht ausreicht, das Kernmaterial wieder mit nach vorn zu nehmen. Auf diese Weise wird das Kernmaterial ähnlich wie in einem Schwingförderer aktiv zum rückwärtigen Rohrende transportiert.The invention is based on the idea of executing the oscillating movement which is superimposed on the linear propulsion movement so asymmetrically that the lifting speed is greater in the forward direction than in the reverse direction. Under these circumstances, the oscillating movement, which actually serves to generate ramming impacts for the advance of the pipe, also has the effect that the core material in the pipe is transported backwards. With the relatively slow backward movement of the pipe, the soil lying in the pipe is carried along due to the relatively high static friction. With the faster forward movement of the tube, however, the acceleration of the tube becomes so great that the static friction is not sufficient to take the core material forward again. In this way, the core material is actively transported to the rear end of the tube, similar to an oscillating conveyor.

Mit Hilfe dieses Transportmechanismus können sogar leichte Steigungen überwunden werden, so daß ein einwandfreier Materialabtransport auch dann noch gewährleistet ist, wenn das Rohr schräg abwärts in das Erdreich eingetrieben wird.With the help of this transport mechanism, even slight gradients can be overcome, so that proper material removal is still guaranteed even if the pipe is driven obliquely downwards into the ground.

Durch den kontinuierlichen Abtransport des Kernmaterials während des Rohrvortriebs wird die Bildung größerer Materialansammlungen im Rohr vermieden, so daß Reibungsverluste und die Gesamtmasse der oszillierend bewegten Teile verringert werden. Hierdurch ergibt sich eine deutliche Senkung des Energiebedarfs.Due to the continuous removal of the core material during pipe jacking, the formation of larger material accumulations in the pipe is avoided, so that friction losses and the total mass of the oscillating parts are reduced. This results in a significant reduction in energy requirements.

Aufgrund der stetigen Materialabfuhr brauchen die Vortriebsarbeiten nur selten oder gar nicht unterbrochen zu werden, um das Kernmaterial aus dem Rohr zu entfernen. Dieser Vorteil wird bei dem erfindungsgemäßen Verfahren ohne kontinuierliche Flüssigkeitsspülung erreicht, so daß keine aufwendigen Spüleinrichtungen erforderlich sind und der Anfahrschacht nicht durch Spülflüssigkeit verschlammt wird.Due to the constant material removal, the tunneling work rarely or not need to be interrupted in order to remove the core material from the pipe. This advantage is achieved in the method according to the invention without continuous liquid flushing, so that no complex flushing devices are required and the start-up shaft is not silted up by flushing liquid.

Ein weiterer Vorteil der Erfindung besteht darin, daß aufgrund der niedrigeren Geschwindigkeit während des Rückwärtshubes bei gegebener Antriebsleistung eine höhere Kraft zur Verfügung steht, um das Rohr wieder freizubekommen. Auf diese Weise wird ein störungsfreier Betrieb auch bei ungünstigen Bodenverhältnissen erreicht, bei denen das Rohr dazu neigt, sich im Bohrloch zu verklemmen.Another advantage of the invention is that due to the lower Speed during the reverse stroke with a given drive power a higher force is available to clear the pipe again. In this way, trouble-free operation is achieved even in unfavorable ground conditions, in which the pipe tends to jam in the borehole.

Darüber hinaus ergibt sich aufgrund der Kleineren Geschwindigkeit beim Rückwärtshub ein geringerer Rückstoß bei der Bewegungsumkehr am Ende des Rückwärtshubes, so daß die Erschütterungen im Bereich der Antriebsaggregate und die mechanische Beanspruchung der Stützen verringert wird, mit denen die Vortriebseinrichtung an der Rückwand des Anfahrschachtes abgestützt wird. Andererseits wird bei der schnelleren Vorwärtsbewegung des Rohres eine größere kinetische Energie und somit eine größere Durchschlagskraft erreicht.In addition, due to the lower speed during the reverse stroke, there is less recoil when reversing the movement at the end of the reverse stroke, so that the vibrations in the area of the drive units and the mechanical stress on the supports with which the propulsion device is supported on the rear wall of the approach shaft are reduced. On the other hand, the faster forward movement of the tube results in greater kinetic energy and thus greater penetration.

Die oszillierende Bewegung des Rohres kann bei der erfindungsgemäßen Vorrichtung beispielsweise mit Hilfe eines Kurbeltriebes mit Schwinge, eines Linearmotors mit geeigneter Steuerung oder einer Anordnung aus einfach oder doppelt wirkenden Hydraulikzylindern erzeugt werden. Der Oszillator läßt sich dabei jeweils so einstellen, daß die Geschwindigkeitsdifferenz zwischen Vorwärtshub und Rückwärtshub im Hinblick auf den Rohrdurchmesser, die Bodenbeschaffenheit und dergleichen optimiert wird.In the device according to the invention, the oscillating movement of the tube can be generated, for example, with the aid of a crank mechanism with a rocker arm, a linear motor with suitable control or an arrangement of single or double-acting hydraulic cylinders. The oscillator can be adjusted so that the speed difference between the forward stroke and the reverse stroke is optimized with regard to the pipe diameter, the condition of the ground and the like.

Im folgenden wird ein bevorzugtes Ausführungsbeispiel der Erfindung anhand der Zeichnungen näher erläutert.A preferred exemplary embodiment of the invention is explained in more detail below with reference to the drawings.

Es zeigen:

Fig. 1
einen schematischen Schnitt durch eine erfindungsgemäße Vorrichtung zum Vortreiben von Rohren; und
Fig. 2
eine schematische Skizze eines Beispiels eines Oszillators für den oszillierenden Rohrantrieb.
Show it:
Fig. 1
a schematic section through an inventive device for advancing pipes; and
Fig. 2
a schematic sketch of an example of an oscillator for the oscillating tubular drive.

Gemäß Figur 1 ist in einem Anfahrschacht 10 eine Rammvorrichtung 12 installiert, mit der ein Rohr 14 etwa waagerecht in das Erdreich 16 eingetrieben wird. Die Rammvorrichtung weist eine Lafette 18 auf, die mit Füßen 20 auf dem Boden des Anfahrschachtes 10 justiert ist und sich an ihrem der Vortriebsrichtung des Rohres entgegengesetzten Ende mit Stempeln 22 an der Rückwand des Anfahrschachtes abstützt. Auf der Lafette 18 ist ein Schlitten 24 geführt, der mit einer Vortriebseinrichtung 26 linear in Längsrichtung des Rohres 14 antreibbar ist, um das Rohr in das Erdreich vorzupressen. Der Schlitten 24 trägt seinerseits eine in Längsrichtung des Rohres 14 geführte Rohrhalterung 28 mit Spannvorrichtungen 30, in die das Rohr 14 fest eingespannt ist. Mit Hilfe eines Oszillators 32 ist die Rohrhalterung 28 hin-und hergehend relativ zu dem Schlitten 24 bewegbar, so daß das Rohr 14 eine der stetigen Vortriebsbewegung überlagerte Längsschwingung ausführt. Das vordere Rohrende 34 übt somit Rammschläge auf das Erdreich aus, so daß das Eindringen des Rohres in das Erdreich begünstigt wird.According to FIG. 1, a ramming device 12 is installed in a start-up shaft 10, with which a pipe 14 is driven approximately horizontally into the soil 16. The ramming device has a carriage 18 which is adjusted with feet 20 on the bottom of the approach shaft 10 and which is stamped at its end opposite to the direction of advance of the tube supports the rear wall of the approach shaft. A carriage 24 is guided on the carriage 18 and can be driven linearly in the longitudinal direction of the pipe 14 by means of a propulsion device 26 in order to press the pipe into the ground. The carriage 24 in turn carries a tube holder 28, which is guided in the longitudinal direction of the tube 14 and has clamping devices 30, in which the tube 14 is firmly clamped. With the help of an oscillator 32, the tube holder 28 can be moved back and forth relative to the slide 24, so that the tube 14 executes a longitudinal vibration superimposed on the continuous propulsion movement. The front pipe end 34 thus exerts ramming impacts on the ground, so that the penetration of the pipe into the ground is promoted.

Beim Eindringen des Rohres 14 in den Boden wird ein Teil des Erdreiches als Kernmaterial 36 in das Innere des Rohres verdrängt. Der Oszillator 32 ist so gestaltet, daß der Vortriebshub - nach links in Figur 1 - relativ zu dem Schlitten 24 mit einer größeren Geschwindigkeit erfolgt als der Rückwärtshub. Dies hat zur Folge, daß das Kernmaterial 36 schrittweise zum hinteren Rohrende transportiert wird und auf den Boden des Anfahrschachtes 10 fällt.When the pipe 14 penetrates into the ground, part of the soil as core material 36 is displaced into the interior of the pipe. The oscillator 32 is designed such that the propulsion stroke - to the left in FIG. 1 - takes place at a greater speed than the reverse stroke relative to the carriage 24. As a result, the core material 36 is gradually transported to the rear pipe end and falls to the bottom of the approach shaft 10.

Bei dem Oszillator 32 handelt es sich beispielsweise um einen mechanischen Oszillator, dessen Funktionsprinzip nachfolgend unter Bezugnahme auf Figur 2 erläutert werden soll.The oscillator 32 is, for example, a mechanical oscillator, the principle of which will be explained below with reference to FIG. 2.

In Figur 2 ist ein in waagerechter Richtung, parallel zur Achse des Rohres 14 in Figur 1, geführter Teil der Rohrhalterung 28 gezeigt.FIG. 2 shows a part of the pipe holder 28 that is guided in a horizontal direction, parallel to the axis of the pipe 14 in FIG. 1.

An diesem Teil der Rohrhalterung 28 wird durch zwei parallel zueinander rechtwinklig zur Längsrichtung der Rohrhalterung vorspringende Ansätze 38 eine Gleitschiene für einen Zapfen 40 einer Schwinge 42 gebildet. Die durch zwei parallele Schienen gebildete Schwinge 42 ist mit ihrem entgegengesetzten Ende an einer drehbaren Achse 44 befestigt und ist somit in Richtung der Pfeile A schwenkbar. Eine durch einen Motor angetriebene Kurbelscheibe 46 weist einen exzentrischen Kurbelzapfen 48 auf, der zwischen die beiden Schienen der Schwinge 42 greift. Wenn die Kurbelscheibe 46 in Richtung des Pfeiles B gedreht wird, so wird die Schwinge 42 oszillierend verschwenkt und entsprechend die Rohrhalterung 28 in Richtung der Pfeile C hin- und herbewegt. Die Geschwindigkeit der Rohrhalterung 28 ist proportional zur Geschwindigkeit der Querbewegung des Kurbelzapfens 48 (parallel zu dem Doppelpfeil C) und umgekehrt proportional zu dem jeweiligen Abstand zwischen dem Kurbelzapfen 48 und der Achse 44. Die in Figur 2 in durchgezogenen Linien gezeigte Stellung des Kurbelzapfens 48 entspricht einer Position kurz vor dem vorderen Umkehrpunkt. Wenn sich der Kurbelzapfen beim anschließenden Rückwärtshub durch die Position 48' bewegt, ist sein Abstand zur Achse 44 relativ groß und somit die Hubgeschwindigkeit der Rohrhalterung 28 nur gering. Wenn sich der Kurbelzapfen dagegen beim Vorwärtshub durch die Position 48'' bewegt, ist sein Abstand zur Achse 44 wesentlich Kleiner, so daß sich beim Vorwärtshub eine wesentlich höhere Hubgeschwindigkeit ergibt. Durch Verstellen der Höhe der Kurbelscheibe 46 relativ zur Schwinge 42 läßt sich das Verhältnis der Geschwindigkeiten der Rohrhalterung 28 beim Vorwärts- und Rückwärtshub stufenlos variieren.On this part of the tube holder 28, a slide rail for a pin 40 of a rocker 42 is formed by two projections 38 projecting parallel to one another at right angles to the longitudinal direction of the tube holder. The rocker 42 formed by two parallel rails is fastened at its opposite end to a rotatable axis 44 and can thus be pivoted in the direction of the arrows A. A crank disk 46 driven by a motor has an eccentric crank pin 48 which engages between the two rails of the rocker 42. When the crank disk 46 is rotated in the direction of arrow B, the rocker 42 is pivoted in an oscillating manner and the tube holder 28 is accordingly moved back and forth in the direction of the arrows C. The speed of the tube holder 28 is proportional to the speed of the transverse movement of the crank pin 48 (parallel to the double arrow C) and inversely proportional to the respective one Distance between the crank pin 48 and the axis 44. The position of the crank pin 48 shown in solid lines in FIG. 2 corresponds to a position shortly before the front turning point. If the crank pin moves through the position 48 ′ during the subsequent reverse stroke, its distance from the axis 44 is relatively large and the stroke speed of the tube holder 28 is therefore only low. If, on the other hand, the crank pin moves through the position 48 ″ during the forward stroke, its distance from the axis 44 is considerably smaller, so that a significantly higher stroke speed results during the forward stroke. By adjusting the height of the crank disk 46 relative to the rocker 42, the ratio of the speeds of the tube holder 28 during the forward and reverse stroke can be varied continuously.

Claims (5)

  1. Method for the underground laying of pipes, in which an oscillating movement in the longitudinal direction is superimposed on the drive movement of the pipe (14), characterised in that the oscillating movement in the drive direction occurs at a greater stroke speed than in the opposite direction.
  2. Device for performing the method according to Claim 1 with a pipe holding device (28) for clamping the pipe (14), a drive device (26) for generating the drive movement of the pipe holding device and of the pipe, and with an oscillator (32) for generating a reciprocating movement of the pipe holding device in a longitudinal direction of the pipe, which movement is superimposed on the drive movement,
    characterised in that the oscillator is driven in a mode in which its stroke speed in the drive direction is greater than the stroke speed in the opposite direction.
  3. Device according to Claim 2,
    characterised in that the oscillator is a crank mechanism (46) with a crank (42).
  4. Device according to Claim 2,
    characterised in that the oscillator (32) comprises at least one piston/cylinder unit.
  5. Device according to Claim 2,
    characterised in that the oscillator (32) is a linear motor.
EP91101325A 1991-02-01 1991-02-01 Method and apparatus for laying underground pipes Expired - Lifetime EP0496924B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE91101325T DE59100695D1 (en) 1991-02-01 1991-02-01 Method and device for driving pipes underground.
EP91101325A EP0496924B1 (en) 1991-02-01 1991-02-01 Method and apparatus for laying underground pipes
AT91101325T ATE98335T1 (en) 1991-02-01 1991-02-01 METHOD AND DEVICE FOR UNDERGROUND JACKING OF PIPE.
DK011692A DK11692A (en) 1991-02-01 1992-01-31 PROCEDURE AND APPARATUS FOR DRIVING BEETS IN EARTH

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP91101325A EP0496924B1 (en) 1991-02-01 1991-02-01 Method and apparatus for laying underground pipes

Publications (2)

Publication Number Publication Date
EP0496924A1 EP0496924A1 (en) 1992-08-05
EP0496924B1 true EP0496924B1 (en) 1993-12-08

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Application Number Title Priority Date Filing Date
EP91101325A Expired - Lifetime EP0496924B1 (en) 1991-02-01 1991-02-01 Method and apparatus for laying underground pipes

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EP (1) EP0496924B1 (en)
AT (1) ATE98335T1 (en)
DE (1) DE59100695D1 (en)
DK (1) DK11692A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004181A (en) * 1958-07-14 1961-10-10 Bosch Arma Corp Alternator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1050151A (en) * 1900-01-01
US2229912A (en) * 1941-01-28 Method and apparatus for displacing
US3741315A (en) * 1970-01-08 1973-06-26 Mining Dev Ag Drilling or cutting or earth strata
US4000879A (en) * 1974-10-23 1977-01-04 The Charles Machine Works, Inc. Pushing or pulling apparatus for pipe, rod or the like
GB2091782B (en) * 1981-01-23 1984-08-15 Inst Gornogo Dela Sibirskogo O Emtying spoil from pipes
JPS57146895A (en) * 1981-03-09 1982-09-10 Hitachi Construction Machinery Vibration type pipe embedding apparatus
FR2509770A1 (en) * 1981-07-16 1983-01-21 Inst Gornogo Dela Sibirskogo O METHOD OF LAYING DUCTWORK WITHOUT TRUCKING

Also Published As

Publication number Publication date
ATE98335T1 (en) 1993-12-15
EP0496924A1 (en) 1992-08-05
DK11692A (en) 1992-08-02
DE59100695D1 (en) 1994-01-20
DK11692D0 (en) 1992-01-31

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