EP0271631A1 - Ramming and drilling apparatus - Google Patents

Ramming and drilling apparatus Download PDF

Info

Publication number
EP0271631A1
EP0271631A1 EP19870106640 EP87106640A EP0271631A1 EP 0271631 A1 EP0271631 A1 EP 0271631A1 EP 19870106640 EP19870106640 EP 19870106640 EP 87106640 A EP87106640 A EP 87106640A EP 0271631 A1 EP0271631 A1 EP 0271631A1
Authority
EP
European Patent Office
Prior art keywords
piston
boring machine
ram boring
housing
machine according
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.)
Granted
Application number
EP19870106640
Other languages
German (de)
French (fr)
Other versions
EP0271631B1 (en
Inventor
Paul Schmidt
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
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT87106640T priority Critical patent/ATE54995T1/en
Publication of EP0271631A1 publication Critical patent/EP0271631A1/en
Application granted granted Critical
Publication of EP0271631B1 publication Critical patent/EP0271631B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7738—Pop valves

Definitions

  • the invention relates to a ram boring machine connected via a hose to a compressed air source and having an impact piston axially displaceable in a tubular housing and alternately pressurized with compressed air.
  • Such ram boring machines are primarily used to lay supply lines for water or electricity, as well as telephone cables, without having to tear up the pavement or sidewalks and dig a trench. They usually have a percussion tip which is actuated by a pneumatically operated percussion piston. In order to advance the percussion tip, the percussion piston is moved back and forth in a tubular housing in that compressed air supplied via a compressed air line alternately acts on the front and rear end faces of the percussion piston.
  • shut-off valves e.g. ball valves
  • the invention has for its object to provide a starting device for ram boring machines, which is effective even the longer compressed air hoses, so that they can start up without difficulty.
  • this object is achieved by a valve which is arranged upstream of the percussion piston and opens suddenly at a predetermined pressure.
  • This valve should be arranged as close as possible to the percussion piston and can therefore be arranged either in the housing of the device itself or in the hose between the device and the compressed air source close to the device.
  • Such a valve can be controlled either by compressed air, by hydraulic pressure or by gas pressure.
  • a prerequisite for its effectiveness is that a sufficiently high pressure builds up in front of the valve so that when the valve is suddenly opened, a pressure surge acts on the percussion piston in the implement, which immediately sets the working piston in motion.
  • the valve preferably has a control piston which can be moved and sealed in a housing and which has differently sized hydraulic, gas or compressed air piston surfaces in the closed and in the open state.
  • control piston In order to ensure that the valve opens suddenly at a predetermined pressure, the control piston is held in the direction of the closed position by means of a spring.
  • a tubular stepped piston which is guided in a sealed manner in the housing, is closed at one end, guided in a sealed manner in the region in this area and has radial passage openings; it is provided at the other end with a piston part of larger diameter which is also sealed in the housing.
  • a ram boring machine 16 is connected via a compressed air hose 17 to a compressed air source, not shown.
  • a start valve 18 is arranged in the compressed air hose 17 close to the ram boring machine 16. This start valve 18 should be arranged as close as possible to the ram boring machine 16, so that the pressure wave reaches the percussion piston in the ram boring machine 16 as undamped as possible after opening the start valve 18.
  • the start valve 18 can therefore also be arranged both directly on the ram boring machine 16 and in the ram boring machine 16 itself.
  • the start valve 18 consists of a cylindrical housing 2, which is closed at one end by means of a valve plug.
  • a tubular piston 3 is arranged in the housing 2 and is surrounded by a compression spring 5 arranged in an annular space 4 of the housing 2.
  • the end of the valve plug 1 facing the housing interior forms a stop surface 7.
  • the housing 2 has a shoulder 8, which also serves as a stop.
  • the tubular piston 3 is guided with its one end sealed in a bore 9, so that no compressed air can escape from radial passage openings 10 arranged in this area in the tubular piston 3. For this reason, the tubular piston 3 also has a closed end 15.
  • piston part 14 At the other end of the tubular piston 3 there is a piston part 14 of larger diameter, one end face 11 of which, in the position shown in FIG. 2, bears tightly against the stop surface 7 of the valve plug 1. With its opposite side 12, the piston part 14 comes to rest against a shoulder 8 in the housing 2 when it moves as in FIG. 3 under the influence of the compressed air.
  • the compressed air supplied via the hose connection 6 acts only on the inner surface of the tubular piston 3.
  • the air pressure rises, so that the pressure on the tubular one Piston 3 acting force exceeds the opposing force of the compression spring 5, the tubular piston 3 moves, so that the rear end 11 of the piston part 14 of larger diameter lifts from the stop surface 7.
  • the air pressure acts not only on the inner surface of the tubular piston 3, but also on the end face 11 of the piston part 14. Since the force acting on the tubular piston 3 and the piston part 14 is now considerably greater than the force of the compression spring 5, the tubular piston 3 moves suddenly with the piston part 14 into the position shown in FIG. 3.
  • the radial passage openings 10 pass from the area of the bore 9 into the area of the air duct 13, and the pressure wave which thereby develops hits the percussion piston of the ram drilling device 16 without noticeable damping, which sets in motion immediately, without the risk of standstill there is a dead center position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Abstract

In a pneumatic ram boring machine for laying pipelines without trenching, which is connected to a source of compressed air by a hose, a valve that suddenly opens automatically at a predetermined pressure is arranged upstream of the striker piston. On opening the valve a pressure wave results which reaches the impact piston almost undamped and prevents it from stopping at a dead center position and not starting.

Description

Die Erfindung betrifft ein über einen Schlauch mit einer Druckluftquelle verbundenes Rammbohrgerät mit einem in ei­nem rohrförmigen Gehäuse axial verschiebbaren, wechselsei­tig mit Druckluft beaufschalgten Schlagkolben.The invention relates to a ram boring machine connected via a hose to a compressed air source and having an impact piston axially displaceable in a tubular housing and alternately pressurized with compressed air.

Derartige Rammbohrgeräte dienen in erster Linie dazu, Ver­sorgungsleitungen für Wasser oder Elektrizität sowie Tele­fonkabel zu verlegen, ohne die Straßendecke oder die Bürger­steige aufreißen und einen Graben ziehen zu müssen. Sie besitzen gewöhnlich eine von einem pneumatisch betriebenen Schlagkolben beaufschlagte Schlagspitze. Zum Vortrieben der Schlagspitze wird der Schlagkolben in einem rohrförmigen Gehäuse hin- und herbewegt, indem über eine Druckluftlei­tung zugeführte Druckluft wechselweise die vordere und die rückwärtige Stirnfläche des Schlagkolbens beaufschlagt.Such ram boring machines are primarily used to lay supply lines for water or electricity, as well as telephone cables, without having to tear up the pavement or sidewalks and dig a trench. They usually have a percussion tip which is actuated by a pneumatically operated percussion piston. In order to advance the percussion tip, the percussion piston is moved back and forth in a tubular housing in that compressed air supplied via a compressed air line alternately acts on the front and rear end faces of the percussion piston.

Die meisten druckluftbetriebenen Rammbohrgeräte werden mit normalen Absperrhähnen, z.B. Kugelhähnen, ein- und abge­schaltet.Most pneumatic ram boring machines are switched on and off with normal shut-off valves, e.g. ball valves.

Da sich zwischen dem Absperrhahn an der Druckluftquelle und dem Rammbohrgerät längere Schläuche von ca. 20 m bis 100 m erstrecken, baut sich der Druck im Schlauch und im Rammbohr­gerät nach dem Öffnen des Absperrhahnes verhältnismäßig langsam auf. Dabei kann sich der Schlagkolben im Rammbohr­gerät so ungünstig verschieben, daß die vordere und rück­wärtige Stirnfläche des Schlagkolbens mit demselben Druck beaufschlagt werden und sich somit eine Totpunktstellung ergibt, aus der sich der Schlagkolben nur durch einen Druckluftstoß zum Anlaufen bringen läßt. Dies läßt sich z.B. durch Abknicken des Druckluftschlauches und schlag­artiges Zurückbiegen erreichen. Ist das Rammbohrgerät je­doch schon so weit in das Erdreich eingedrungen, daß die sich in der Erdbohrung befindliche Schlauchlänge mehr als 15 m bis 20 m beträgt, bleibt diese Maßnahme unwirksam. Bei längeren Erdbohrungen entstehen daher durch Anlaufschwierig­keiten große Probleme.Since longer hoses of approx. 20 m to 100 m extend between the shut-off valve at the compressed air source and the ram boring machine, the pressure in the hose and in the ram boring machine builds up relatively slowly after opening the shut-off valve. The percussion piston in the ram boring machine can move so unfavorably that the front and rear end faces of the percussion piston are subjected to the same pressure and thus a dead center position results from which the percussion piston can only be started by a blast of compressed air. This can e.g. by kinking the compressed air hose and abruptly bending it back. However, if the ram boring machine has penetrated so far into the ground that the length of the hose in the borehole is more than 15 m to 20 m, this measure remains ineffective. With longer earth boreholes, major problems arise due to start-up difficulties.

Der Erfindung liegt die Aufgabe zugrunde, eine Startvorrich­tung für Rammbohrgeräte zu schaffen, die auch die längeren Druckluftschläuchen wirksam ist, so daß sie ohne Schwierig­keiten anlaufen können.The invention has for its object to provide a starting device for ram boring machines, which is effective even the longer compressed air hoses, so that they can start up without difficulty.

Erfindungsgemäß wird diese Aufgabe durch ein stromaufwärts vom Schlagkolben angeordnetes, selbsttätig bei einem vorbe­stimmten Druck schlagartig öffnendes Ventil gelöst. Dieses Ventil soll möglichst nahe am Schlagkolben angeordnet sein und kann daher entweder im Gehäuse des Gerätes selbst oder im Schlauch zwischen dem Gerät und der Druckluftquelle nahe am Gerät angeordnet sein.According to the invention, this object is achieved by a valve which is arranged upstream of the percussion piston and opens suddenly at a predetermined pressure. This valve should be arranged as close as possible to the percussion piston and can therefore be arranged either in the housing of the device itself or in the hose between the device and the compressed air source close to the device.

Ein derartiges Ventil läßt sich entweder durch Druckluft, durch Hydraulikdruck oder durch Gasdruck ansteuern. Voraus­setzung für seine Wirksamkeit ist, daß sich vor dem Ventil ein genügend hoher Druck aufbaut, so daß beim schlagartigen Öffnen des Ventils ein Druckstoß auf den Schlagkolben im Arbeitsgerät wirkt, der den Arbeitskolben sofort in Bewe­gung setzt.Such a valve can be controlled either by compressed air, by hydraulic pressure or by gas pressure. A prerequisite for its effectiveness is that a sufficiently high pressure builds up in front of the valve so that when the valve is suddenly opened, a pressure surge acts on the percussion piston in the implement, which immediately sets the working piston in motion.

Vorzugsweise weist das Ventil einen in einem Gehäuse abge­dichtet verschiebbaren Steuerkolben mit im geschlossenen und im geöffneten Zustand unterschiedlich großen hydrau­lik-, gas- oder druckluftbeaufschlagten Kolbenflächen auf.The valve preferably has a control piston which can be moved and sealed in a housing and which has differently sized hydraulic, gas or compressed air piston surfaces in the closed and in the open state.

Um zu erreichen, daß sich das Ventil bei einem vorbestimm­ten Druck schlagartig öffnet, wird der Steuerkolben mittels einer Feder in Richtung der Schließstellung gehalten.In order to ensure that the valve opens suddenly at a predetermined pressure, the control piston is held in the direction of the closed position by means of a spring.

Gemäß einer bevorzugten Ausführung ist ein rohrförmiger, im Gehäuse abgedichtet geführter Stufenkolben am einen Stirn­ende verschlossen, in diesem Bereich im Gehäuse abgedichtet geführt und weist radiale Durchlaßöffnungen auf; er ist am anderen Stirnende mit einem in Gehäuse ebenfalls abgedich­tet geführten Kolbenteil größeren Durchmessers versehen.According to a preferred embodiment, a tubular stepped piston, which is guided in a sealed manner in the housing, is closed at one end, guided in a sealed manner in the region in this area and has radial passage openings; it is provided at the other end with a piston part of larger diameter which is also sealed in the housing.

Solange sich der Stufenkolben in der Schließstellung befin­det, wirkt die Drukluft nur auf den rohrförmigen Kolben kleineren Durchmessers, der sich erst dann veschiebt, wenn der Druck die Kraft der den Steuerkolben in seiner Schließ­stellung haltenden Feder übersteigt.As long as the stepped piston is in the closed position, the pressure air only acts on the tubular piston of smaller diameter, which only shifts when the pressure exceeds the force of the spring holding the control piston in its closed position.

In dem Moment, indem die Kraft der auf den Steuerkolben wirkenden Druckluft die entgegengesetzt wirkende Kraft der Feder übersteigt, verschiebt sich der Kolben und die Druck­luft beaufschlagt den Kolbenteil größeren Durchmessers, so daß sich der Steuerkolben schlagartig verschiebt und sich das Ventil somit schlagartig öffnet.At the moment when the force of the compressed air acting on the control piston exceeds the opposing force of the spring, the piston moves and the compressed air acts on the piston part of larger diameter, so that the control piston moves suddenly and the valve thus opens suddenly.

Die Erfindung wird nachfolgend anhand eines in der Zeich­nung dargestellten Ausführungsbeispiels des näheren erläu­tert. In der Zeichnung zeigen:

  • Fig. 1 ein Rammbohrgerät, in dessen Druckluftschlauch ein Startventil angeordnet ist,
  • Fig. 2 einen Schnitt durch das Startventil in der ge­schlossenen Stellung und
  • Fig. 3 einen Schnitt durch das Startventil in der geöff­neten Stellung.
The invention is explained below with reference to an embodiment shown in the drawing. The drawing shows:
  • 1 is a ram boring machine, in whose compressed air hose a start valve is arranged,
  • Fig. 2 shows a section through the start valve in the closed position and
  • Fig. 3 shows a section through the start valve in the open position.

Ein Rammbohrgerät 16 ist über einen Druckluftschlauch 17 mit einer nicht dargestellten Druckluftquelle verbunden. Im Druckluftschlauch 17 ist nahe am Rammbohrgerät 16 ein Start­ventil 18 angeordnet. Dieses Startventil 18 soll möglichst dicht am Rammbohrgerät 16 angeordnet sein, damit die Druck­welle nach dem Öffnen des Startventils 18 den Schlagkolben im Rammbohrgerät 16 möglichst ungedämpft erreicht. Das Startventil 18 kann daher auch sowohl unmittelbar am Ramm­bohrgerät 16 als auch im Rammbohrgerät 16 selber angeordnet sein.A ram boring machine 16 is connected via a compressed air hose 17 to a compressed air source, not shown. A start valve 18 is arranged in the compressed air hose 17 close to the ram boring machine 16. This start valve 18 should be arranged as close as possible to the ram boring machine 16, so that the pressure wave reaches the percussion piston in the ram boring machine 16 as undamped as possible after opening the start valve 18. The start valve 18 can therefore also be arranged both directly on the ram boring machine 16 and in the ram boring machine 16 itself.

Das Startventil 18 besteht aus einem zylindrischen Gehäuse 2, das am einen Ende mittels eines Ventilverschlußstopfens verschlossen ist. Im Gehäuse 2 ist ein rohrförmiger Kolben 3 angeordnet, der von einer in einem Ringraum 4 des Gehäu­ses 2 angeordneten Druckfeder 5 umgeben ist. Am Ventilver­schlußstopfen 1 befindet sich ein Druckluftschlauchanschluß 6. Des weiteren bildet das dem Gehäuseinnern zugewandte Ende des Ventilverschlußstopfens 1 eine Anschlagfläche 7. Mit Abstand von dieser Anschlagfläche 7 weist das Gehäuse 2 einen Absatz 8 auf, der ebenfalls als Anschlag dient.The start valve 18 consists of a cylindrical housing 2, which is closed at one end by means of a valve plug. A tubular piston 3 is arranged in the housing 2 and is surrounded by a compression spring 5 arranged in an annular space 4 of the housing 2. There is a compressed air hose connection 6 on the valve plug 1. Furthermore, the end of the valve plug 1 facing the housing interior forms a stop surface 7. At a distance from this stop surface 7, the housing 2 has a shoulder 8, which also serves as a stop.

Der rohrförmige Kolben 3 ist mit seinem einen Ende in einer Bohrung 9 abgedichtet geführt, so daß aus in diesen Bereich angeordneten radialen Durchlaßöffnungen 10 im rohrförmigen Kolben 3 keine Druckluft austreten kann. Aus diesem Grunde weist der rohrförmige Kolben 3 auch ein verschlossenes Stirnende 15 auf.The tubular piston 3 is guided with its one end sealed in a bore 9, so that no compressed air can escape from radial passage openings 10 arranged in this area in the tubular piston 3. For this reason, the tubular piston 3 also has a closed end 15.

Am anderen Ende des rohrförmigen Kolbens 3 befindet sich ein Kolbenteil 14 größeren Durchmessers, dessen eines Stirn­ende 11 in der in Fig. 2 dargestellten Stellung dicht an der Anschlagfläche 7 des Ventilverschlußstopfens 1 anliegt. Mit seiner Gegenseite 12 gelangt der Kolbenteil 14 zur Anlage an einen Absatz 8 im Gehäuse 2, wenn er sich wie in Fig. 3 unter dem Einfluß der Druckluft verschiebt.At the other end of the tubular piston 3 there is a piston part 14 of larger diameter, one end face 11 of which, in the position shown in FIG. 2, bears tightly against the stop surface 7 of the valve plug 1. With its opposite side 12, the piston part 14 comes to rest against a shoulder 8 in the housing 2 when it moves as in FIG. 3 under the influence of the compressed air.

Solange sich der rohrförmige Kolben 3 mit dem Kolbenteil 14 größeren Durchmessers in der in Fig. 2 dargestellten Lage befindet, wirkt die über den Schlauchanschluß 6 zugeführte Druckluft nur auf die Innenfläche des rohrförmigen Kolbens 3. Steigt der Luftdruck an, so daß die auf den rohrförmigen Kolben 3 wirkende Kraft die entgegengestzt wirkende Kraft der Druckfeder 5 übersteigt, verschiebt sich der rohrförmi­ge Kolben 3, so daß sich das hintere Stirnende 11 des Kolbenteils 14 größeren Durchmessers von der Anschlagfläche 7 abhebt. In diesem Moment wirkt der Luftdruck nicht nur auf die Innenfläche des rohrförmigen Kolbens 3, sondern auch auf die Stirnfläche 11 des Kolbenteils 14. Da jetzt die auf den rohrförmigen Kolben 3 und den Kolbenteil 14 wirkende Kraft erheblich größer ist als die Kraft der Druckfeder 5, bewegt sich der rohrförmige Kolben 3 mit dem Kolbenteil 14 schlagartig in die in Fig. 3 dargestellte Stellung. Hierdurch gelangen die radialen Durchlaßöffnungen 10 aus dem Bereich der Bohrung 9 in den Bereich des Luftkanals 13, und die sich dadurch entwickelnde Druckwelle trifft ohne merkliche Dämpfung auf den Schlagkolben des Rammbohrgeräts 16, der sich augenblicklich in Bewegung setzt, ohne daß die Gefahr eines Stillstandes in einer Totpunktstellung besteht.As long as the tubular piston 3 with the piston part 14 of larger diameter is in the position shown in FIG. 2, the compressed air supplied via the hose connection 6 acts only on the inner surface of the tubular piston 3. The air pressure rises, so that the pressure on the tubular one Piston 3 acting force exceeds the opposing force of the compression spring 5, the tubular piston 3 moves, so that the rear end 11 of the piston part 14 of larger diameter lifts from the stop surface 7. At this moment, the air pressure acts not only on the inner surface of the tubular piston 3, but also on the end face 11 of the piston part 14. Since the force acting on the tubular piston 3 and the piston part 14 is now considerably greater than the force of the compression spring 5, the tubular piston 3 moves suddenly with the piston part 14 into the position shown in FIG. 3. As a result, the radial passage openings 10 pass from the area of the bore 9 into the area of the air duct 13, and the pressure wave which thereby develops hits the percussion piston of the ram drilling device 16 without noticeable damping, which sets in motion immediately, without the risk of standstill there is a dead center position.

Wird die Druckluftzufuhr unterbrochen und sinkt der Druck im Rammbohrgerät 16, im Druckluftschlauch 17 und im Start­ventil 18 weit genug ab, so daß die Kraft der Druckfeder 5 ausreicht, um den rohrförmigen Kolben 3 mit dem Kolbenteil 14 in die Ausgangsstellung zurückzubewegen, ist das Start­ventil 18 für einen neuen Start bereit.If the compressed air supply is interrupted and the pressure in the ram drilling device 16, in the compressed air hose 17 and in the start valve 18 drops far enough that the force of the compression spring 5 is sufficient to move the tubular piston 3 with the piston part 14 back into the starting position, the start valve 18 ready for a new start.

Claims (10)

1. Rammbohrgerät mit einem in einem rohrförmigen Gehäuse axial beweglichen, wechselseitig mit Druckluft beauf­schlagten Schlagkolben, gekennzeichnet durch ein strom­aufwärts angeordnetes, selbsttätig bei einem vorbe­stimmten Druck schlagartig öffnendes Ventil (18).1. A ram boring machine with an impact piston which is axially movable in a tubular housing and alternately pressurized with compressed air, characterized by an upstream valve (18) which opens automatically at a predetermined pressure. 2. Rammbohrgerät nach Anspruch 1, dadurch gekennzeichnet, daß das Ventil (18) im Gehäuse (1, 2) angeordnet ist.2. A ram boring machine according to claim 1, characterized in that the valve (18) is arranged in the housing (1, 2). 3. Rammbohrgerät nach Anspruch 1, dadurch gekennzeichnet, daß das Ventil (18) im Druckluftschlauch (17) angeord­net ist.3. A ram boring machine according to claim 1, characterized in that the valve (18) is arranged in the compressed air hose (17). 4. Rammbohrgerät nach einem der Ansprüche 1 bis 3, gekenn­zeichnet durch ein druckluftgesteuertes Ventil (18).4. A ram boring machine according to one of claims 1 to 3, characterized by a compressed air controlled valve (18). 5. Rammbohrgerät nach Anspruch 4, dadurch gekennzeichnet, daß das Ventil (18) einen in einem Gehäuse (1, 2) abgedichtet verschiebbaren Steuerkolben (3, 14) mit im geschlossenen und im geöffneten Zustand unterschied­ lich großen hydraulik-, gas- oder druckluftbeaufschlag­ten Kolbenflächen aufweist.5. ram boring machine according to claim 4, characterized in that the valve (18) in a housing (1, 2) sealed displaceable control piston (3, 14) with a difference in the closed and in the open state Has large piston, hydraulic, gas or compressed air surfaces. 6. Rammbohrgerät nach Anspruch 5, dadruch gekennzeichnet, daß der Steuerkolben (3, 14) mittels einer Feder (5) in Richtung der Schließstellung gehalten wird.6. A ram boring machine according to claim 5, characterized in that the control piston (3, 14) is held in the direction of the closed position by means of a spring (5). 7. Rammbohrgerät nach Anspruch 6, gekennziechnet durch einen rohrförmigen, im Gehäuse (1, 2) abgedichtet ge­führten Stufenkolben (3, 14).7. ram boring machine according to claim 6, marked by a tubular, in the housing (1, 2) sealed stepped piston (3, 14). 8. Rammbohrgerät nach Anspruch 7, dadurch gekennzeichnet, daß der rohrförmige Kolben (3) am einen Stirnende (15) verschlossen sowie in diesem Bereich im Gehäuse (2) abgedichtet geführt ist, radiale Durchlaßöffnugen (10) aufweist und am anderen Stirnende (11) mit einem im Gehäuse (2) ebenfalls abgedichtet gerührten Kolben­teil (14) größeren Durchmessers versehen ist.8. A ram boring machine according to claim 7, characterized in that the tubular piston (3) is closed at one end (15) and is sealed in this area in the housing (2), has radial passage openings (10) and on the other end (11) is provided with a piston part (14) of larger diameter which is also stirred and sealed in the housing (2). 9. Rammbohrgerät nach Anspruch 8, dadurch gekennzeichnet, daß der Kolbenteil (14) größeren Durchmessers in der Schließstellung mit seinem Stirnende (11) agbedichtet an einer entsprechenden Anschlagfläche (7) des Gehäu­ses (1, 2) anliegt).9. A ram boring machine according to claim 8, characterized in that the piston part (14) of larger diameter in the closed position with its front end (11) is sealed against a corresponding stop face (7) of the housing (1, 2). 10. Rammbohrgerät nach einem der Ansprüche 6 bis 9, da­durch gekennzeichnet, daß sich zwischen dem rohrförmig­gen Kolbenteil (3) und im Gehäuse (2) ein Ringraum (4) befindet, in dem eine Druckfeder (5) angeordnet ist.10. A ram boring machine according to one of claims 6 to 9, characterized in that there is an annular space (4) between the tubular piston part (3) and in the housing (2), in which a compression spring (5) is arranged.
EP19870106640 1986-12-13 1987-05-07 Ramming and drilling apparatus Expired - Lifetime EP0271631B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87106640T ATE54995T1 (en) 1986-12-13 1987-05-07 DRILLING RIG.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863642696 DE3642696A1 (en) 1986-12-13 1986-12-13 RAMM DRILLING DEVICE
DE3642696 1986-12-13

Publications (2)

Publication Number Publication Date
EP0271631A1 true EP0271631A1 (en) 1988-06-22
EP0271631B1 EP0271631B1 (en) 1990-07-25

Family

ID=6316163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870106640 Expired - Lifetime EP0271631B1 (en) 1986-12-13 1987-05-07 Ramming and drilling apparatus

Country Status (5)

Country Link
US (1) US4833974A (en)
EP (1) EP0271631B1 (en)
JP (1) JPS63151789A (en)
AT (1) ATE54995T1 (en)
DE (1) DE3642696A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322170A2 (en) * 1987-12-22 1989-06-28 Gas Research Institute Earth boring apparatus with control valve
EP0376585A2 (en) * 1988-12-30 1990-07-04 Gas Research Institute Downhole surge valve for earth boring apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2194079C (en) * 1996-12-19 2005-11-29 Murray P. Craigmile Methods and apparatus for directionally drilling a bore and placing pipe
DE102009038383B4 (en) * 2009-08-24 2014-10-16 Tracto-Technik Gmbh & Co. Kg ram drilling apparatus

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747444A (en) * 1953-12-07 1956-05-29 Shepherd Paul Pneumatic peck hammer
US2964752A (en) * 1958-04-29 1960-12-20 Olin Mathieson Fluid operated tool
AT298354B (en) * 1966-08-09 1972-05-10 Inst Gornogo Dela Sibirskogo O Impact device for driving cavities in the ground
AT308006B (en) * 1971-02-02 1973-06-25 Inst Gornogo Dela Sibirskogo O Reversible impact device for the formation of holes in the ground by soil compaction
AT310095B (en) * 1969-02-26 1973-09-10 Inst Gornogo Dela Sibirskogo O Pneumatic impact device for making holes in the ground
AT320531B (en) * 1967-03-14 1975-02-10 Inst Gornogo Dela Sibirskogo O LIFT FOR DRIVING VACUUMS IN THE GROUND
AT335921B (en) * 1973-01-15 1977-04-12 Inst Gornogo Dela Sibirskogo O METHOD FOR PRODUCING A COMPRESSED, SHELL-SHAPED LIMITATION OF A DRILLING HOLE WALL AND DEVICE FOR PERFORMING THE METHOD
AT348940B (en) * 1976-10-27 1979-03-12 Inst Gornogo Dela Sibirskogo O COMPRESSED AIR STRIKING

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2287840A (en) * 1940-04-12 1942-06-30 United Shoe Machinery Corp Relief valve
US3048188A (en) * 1957-10-29 1962-08-07 Frank B Hunter Relief valve
US3025869A (en) * 1959-07-07 1962-03-20 Bendix Westinghouse Automotive Fluid pressure valve mechanism
US4026192A (en) * 1971-11-12 1977-05-31 Atlas Copco Aktiebolag Motor driven by a pressurized fluid medium for operating an impacting tool in a linear direction
DE2356804A1 (en) * 1973-11-14 1975-05-28 Tracto Technik Self-propelled pneumatic ram boring tool - has striker piston and control piston and start valve in compressed air feed
US3996957A (en) * 1975-09-12 1976-12-14 Milton Industries, Inc. Inflator valve with pressure gauge and safety regulator
SU655824A1 (en) * 1976-07-07 1979-04-05 Институт Горного Дела Со Ан Ссср Pneumatic percussion device for drilling boreholes
US4569271A (en) * 1982-06-11 1986-02-11 Lucas Industries Public Limited Company Hydraulic boosters for vehicle hydraulic systems
SE445434B (en) * 1983-08-01 1986-06-23 Atlas Copco Ab VIBRATION DUMP PRESSURE FLUID DRIVES

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2747444A (en) * 1953-12-07 1956-05-29 Shepherd Paul Pneumatic peck hammer
US2964752A (en) * 1958-04-29 1960-12-20 Olin Mathieson Fluid operated tool
AT298354B (en) * 1966-08-09 1972-05-10 Inst Gornogo Dela Sibirskogo O Impact device for driving cavities in the ground
AT320531B (en) * 1967-03-14 1975-02-10 Inst Gornogo Dela Sibirskogo O LIFT FOR DRIVING VACUUMS IN THE GROUND
AT310095B (en) * 1969-02-26 1973-09-10 Inst Gornogo Dela Sibirskogo O Pneumatic impact device for making holes in the ground
AT308006B (en) * 1971-02-02 1973-06-25 Inst Gornogo Dela Sibirskogo O Reversible impact device for the formation of holes in the ground by soil compaction
AT335921B (en) * 1973-01-15 1977-04-12 Inst Gornogo Dela Sibirskogo O METHOD FOR PRODUCING A COMPRESSED, SHELL-SHAPED LIMITATION OF A DRILLING HOLE WALL AND DEVICE FOR PERFORMING THE METHOD
AT348940B (en) * 1976-10-27 1979-03-12 Inst Gornogo Dela Sibirskogo O COMPRESSED AIR STRIKING

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0322170A2 (en) * 1987-12-22 1989-06-28 Gas Research Institute Earth boring apparatus with control valve
EP0322170A3 (en) * 1987-12-22 1989-09-20 Gas Research Institute Earth boring apparatus with control valve
EP0376585A2 (en) * 1988-12-30 1990-07-04 Gas Research Institute Downhole surge valve for earth boring apparatus
EP0376585A3 (en) * 1988-12-30 1991-04-03 Gas Research Institute Downhole surge valve for earth boring apparatus

Also Published As

Publication number Publication date
DE3642696C2 (en) 1991-06-20
US4833974A (en) 1989-05-30
EP0271631B1 (en) 1990-07-25
JPS63151789A (en) 1988-06-24
ATE54995T1 (en) 1990-08-15
DE3642696A1 (en) 1988-06-16

Similar Documents

Publication Publication Date Title
DE3323332C2 (en)
DE3047375C2 (en) Submersible pile driving device
DE2820785C2 (en) Valve control for ram drilling rigs
EP0558097A1 (en) Boring arm
DE2707790A1 (en) DEVICE FOR TRANSFERRING STRIKES TO A LONG ELEMENT
DE2303665A1 (en) FLUID COUPLING DEVICE
EP0271631B1 (en) Ramming and drilling apparatus
DE2836381A1 (en) HYDRAULICALLY OPERATED SAFETY VALVE, ESPECIALLY FOR UNDERWATER DRILL HOLES
DE2812358A1 (en) METHOD FOR CONTROLLING THE REVERSAL OF MOTION OF DEVICES FOR DRILLING IN THE FLOOR AND DEVICE FOR CARRYING OUT THE PROCEDURE
DE3241746A1 (en) DEVICE FOR COUPLING A BORING ROD FOR CHAMBER TAPE HOLES WITH THE WORK TOOL OF A DRILLING MACHINE
DE2611677A1 (en) DEVICE FOR DRILLING EARTH DRILLS
CH621731A5 (en)
DE2933032C2 (en) Collecting device for oil escaping uncontrolled from underwater boreholes
DE2452745C2 (en) Process for breaking apart objects, for example concrete masonry, as well as a system for carrying out the process
DE19512602C1 (en) Device for ramming pipes or for expanding pilot holes or replacing underground pipes
DE2900221C2 (en) Pressure-medium driven ramming device
DE2703219A1 (en) EXTRACTION TOOLS, IN PARTICULAR FOR UNDERGROUND MINING
DE3540266C1 (en) Overload protection
EP0018347B1 (en) Tapping device for a blast furnace
DE102022108791A1 (en) Device for connecting a drilling tool to the power turret of a drilling rig
EP4261384A1 (en) Device for connecting a drilling tool to the power knob of a drilling device
DE2435884C3 (en) Soil sampling device
DE3228106A1 (en) Arrangement for earth boring by means of the air-lift method
DE69720511T2 (en) SYSTEM FOR CONTROLLING OR EXTINGUISHING FIRE IN OIL HOLES
DE8605543U1 (en) adapter

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19880920

17Q First examination report despatched

Effective date: 19891213

ITF It: translation for a ep patent filed

Owner name: BARZANO' E ZANARDO ROMA S.P.A.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH FR GB IT LI LU NL SE

REF Corresponds to:

Ref document number: 54995

Country of ref document: AT

Date of ref document: 19900815

Kind code of ref document: T

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
ET Fr: translation filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19910527

Year of fee payment: 5

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19910529

Year of fee payment: 5

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ITTA It: last paid annual fee
26N No opposition filed
EPTA Lu: last paid annual fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19920507

Ref country code: AT

Effective date: 19920507

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19920531

Year of fee payment: 6

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19920604

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Effective date: 19930531

BERE Be: lapsed

Owner name: SCHMIDT PAUL

Effective date: 19930531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19931201

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
EAL Se: european patent in force in sweden

Ref document number: 87106640.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19970522

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980508

EUG Se: european patent has lapsed

Ref document number: 87106640.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19990517

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19990519

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000507

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20000523

Year of fee payment: 14

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20000507

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010131

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010606

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010606

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050507