EP0694675B1 - Fixing and clamping tensioning device for a tow rope connected to a boring ram - Google Patents
Fixing and clamping tensioning device for a tow rope connected to a boring ram Download PDFInfo
- Publication number
- EP0694675B1 EP0694675B1 EP95111830A EP95111830A EP0694675B1 EP 0694675 B1 EP0694675 B1 EP 0694675B1 EP 95111830 A EP95111830 A EP 95111830A EP 95111830 A EP95111830 A EP 95111830A EP 0694675 B1 EP0694675 B1 EP 0694675B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pipe
- clamping
- pulled
- parallel
- tensioning
- 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 4
- 244000089486 Phragmites australis subsp australis Species 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F9/00—Straining wire
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21F—WORKING OR PROCESSING OF METAL WIRE
- B21F9/00—Straining wire
- B21F9/002—Straining wire to maintain tension in the wire, e.g. to pull the wire taut
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/084—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with flexible drawing means, e.g. cables
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/20—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes
- E21B7/205—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal
- E21B7/206—Driving or forcing casings or pipes into boreholes, e.g. sinking; Simultaneously drilling and casing boreholes without earth removal using down-hole drives
Definitions
- the invention relates to a fastening and tensioning device for a ram boring machine connecting a pipe to be pulled in with the ram boring machine Pull rope.
- Such fastening and tensioning devices are required to insert one into an earth hole Pipe from a ram boring machine that drills the earth to be retightened if the pipe is not tensile can be connected to the ram boring machine.
- a known fastening and tensioning device of this type is one end of the pull rope in one with the ram boring machine attached and tensile connected sleeve through a pull tube inserted into the sleeve.
- On the free end of the draw tube is a Pressure piece with an axially displaceable clamping device put on for the rope.
- the clamping device consists of clamping jaws that can be clamped with screws, which are axially displaceable in a guide.
- At this Leadership engages one connected to the jaws Clamping screw, by means of which the clamping jaws axially shift.
- the invention is based on the problem, a simple one fastening and tensioning device to be handled create, the clamping stroke is unlimited and at any time allows easy re-tensioning.
- the invention consists in a Fastening and tensioning device of the aforementioned Kind with an adjacent to the pressure piece, at one acting in the direction of the pipe to be drawn in Force on the pulling rope clamping element and with one arranged coaxially to the clamping element, at one clamping in the direction of the pipe to be drawn in, opposite towards the direction of the pipe to be drawn in Force movable clamping element to be provided.
- the clamping element and the tensioning element act automatically jamming when one towards the retractable Rohrs acting force on the pull rope occurs during the clamping element and the tensioning element the pull rope release when a movement in opposite Direction takes place.
- the pull rope by means of the tensioning element through a To tension forward and backward movement, the Clamping element the pull rope with every forward movement holds the clamping element and the clamping element thus grab a piece of rope and move backwards can tighten again.
- the clamping element can be parallel, on parallel core have guided jaws, and the parallel link can be articulated on an extension of the pressure piece be.
- a simple release of the clamped between the jaws Pull rope can be attached to one by one Reach parallel extension arranged lever extension.
- the clamping element In order to ensure an automatic pinching under all circumstances to reach the pull rope, the clamping element be loaded with a spring in the clamping direction.
- the tensioning element can be constructed similarly and also have parallel jaws guided on a parallel core.
- the parallel links are on another pair of links articulated on the one hand on the extension of the pressure piece and on the other hand by a another handlebar is connected to each other and one Has handle for tensioning the pull tube.
- This Handle can be from a lever extension on the pair of handlebars connecting links exist.
- the jaws and thus that which is clamped by the jaws Move the pull rope in the tensioning direction, whereby the jaws of the clamping element during the pull rope release this movement.
- the tensioning element moved opposite to the tensioning direction keep the Clamping jaws of the clamping element, the pull rope firmly while the clamping jaws of the clamping element on the Rope can move to a new piece of rope to clamp further spans.
- That Pressure piece has a side opening for inserting the Draw rope, while the jaws on one side led to the parallel core and thus by accessible on the same side as the side Opening on the pressure piece.
- a sleeve For attach the pull rope to the ram and for receiving one end of the pipe to be drawn in a sleeve may be arranged at the end of the ram boring machine.
- the sleeve or the ram boring machine have a circumferential one Rope groove with one leading into the inside of the sleeve Opening up.
- the pull rope can then be through pipe to be drawn in and the sleeve, through the opening through and into the rope groove and back again through the opening into the inside of the sleeve.
- the free end of the rope is firmly connected to the cable.
- To parallel rope areas between the opening and the tensile connection can be one in the groove lying rope loop exciting spring can be arranged.
- a sleeve 2 arranged, into which a pipe 3 to be inserted is inserted is.
- a Towing rope 4 performed with the ram boring machine 1 and the sleeve 2 is connected and by means of a Fastening and tensioning device can be tensioned.
- a pressure piece 5 is arranged, which from a the pipe end of the pressure plate 6 and one in the pipe end 7 inserted pipe socket.
- the Pressure plate 6 and the pipe socket 7 are with a side slot 8 provided to the pull rope 4th conveniently in the area of a clamping element 10 and one Bring clamping element 15.
- the clamping element 10 is in the vicinity of the pressure plate 6 arranged on an extension 9 and consists of parallel Clamping jaws 11, which are connected by means of parallel core 12 are articulated on the extension 9.
- the bigger the on the pull rope 4 acting force the stronger the Clamping by means of the clamping jaws 11.
- a lever extension 13 is arranged, the by means of a spring 14 in the direction of the pressure plate 6 is pulled.
- the clamping element 15 has also parallel jaws 16, which are coaxial the jaws 11 and the pipe 3 to be drawn in are.
- the jaws 16 are on parallel core 17 arranged, but not directly on the extension 9, but are articulated on a pair of links 18, by a further link 19 to a link parallelogram is added.
- On the other handlebar 19 is a lever extension 20 is arranged with which the Pull rope 4 can be tensioned. For this the pull rope 4 between the jaws 11 of the clamping element 10 and the jaws 16 of the clamping element 15 are placed.
- the clamping element 15 By moving the lever extension 20 in the opposite direction the rope becomes the pressure plate 6 by the clamping element 10, the pressure piece 5 and the pipe 3 to be drawn and excited.
- the clamping element 15 is now in Moves towards the pressure plate 6, holds the clamping element 10 the pull rope 4 firmly, and the pull rope 4 can be moved by moving the Clamping element 15 opposite to the direction of Tension pressure plate 6 further.
- the clamping element 15 can be any desired bias of the pull rope 4. It is the same possible to pre-tension the pull rope 4, if this during the advance of the ram boring machine 1 has subsided to increase again.
- the clamping element is sufficient to release the pretension 10 opposite by moving the lever extension 13 to move towards the pressure plate 6 while doing so the jaws 16 of the clamping element 15 open hold.
- a simple and secure connection of the pull rope 4 with the ram boring machine 1 or the sleeve 2 can reach when the ram boring machine 1 or the sleeve 2 are provided with a circumferential rope groove 21 which connected to the inside of the sleeve 2 via an opening 22 is.
- the pull rope with the Ram drill 1 and the sleeve 2 can also be a piece of rope act, the ends of which by means of the tensile connection 23 are connected.
- the pull rope 4 can then be attached to the tensile connection 23.
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- 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)
- Excavating Of Shafts Or Tunnels (AREA)
Description
Die Erfindung betrifft eine Befestigungs- und Spannvorrichtung für ein an einem Rammbohrgerät befestigtes, ein einzuziehendes Rohr mit dem Rammbohrgerät verbindendes Nachziehseil.The invention relates to a fastening and tensioning device for a ram boring machine connecting a pipe to be pulled in with the ram boring machine Pull rope.
Derartige Befestigungs- und Spannvorrichtungen sind erforderlich, um ein in eine Erdbohrung einzubringendes Rohr von einem die Erdbohrung herstellenden Rammbohrgerät nachziehen zu lassen, wenn sich das Rohr nicht zugfest mit dem Rammbohrgerät verbinden läßt. Bei einer bekannten Befestigungs- und Spannvorrichtung dieser Art ist ein Ende des Nachziehseils in einer mit dem Rammbohrgerät zugfest verbundenen Hülse befestigt und wird durch ein in die Hülse eingestecktes Nachziehrohr geführt. Auf das freie Ende des Nachziehrohrs wird ein Druckstück mit einer axial verschiebbaren Klemmvorrichtung für das Seil aufgesetzt. Die Klemmvorrichtung besteht aus mittels Schrauben spannbarer Klemmbacken, die in einer Führung axial verschiebbar sind. An dieser Führung greift eine mit den Klemmbacken verbundene Spannschraube ein, mittels derer sich die Klemmbacken axial verschieben lassen.Such fastening and tensioning devices are required to insert one into an earth hole Pipe from a ram boring machine that drills the earth to be retightened if the pipe is not tensile can be connected to the ram boring machine. At a known fastening and tensioning device of this type is one end of the pull rope in one with the ram boring machine attached and tensile connected sleeve through a pull tube inserted into the sleeve. On the free end of the draw tube is a Pressure piece with an axially displaceable clamping device put on for the rope. The clamping device consists of clamping jaws that can be clamped with screws, which are axially displaceable in a guide. At this Leadership engages one connected to the jaws Clamping screw, by means of which the clamping jaws axially shift.
Die Handhabung dieser Befestigungs- und Spannvorrichtung ist umständlich, da zunächst die Klemmbacken durch Drehen der Spannschraube so nahe wie möglich an das Druckstück herangebracht werden müssen, danach das von Hand gespannte Seil durch Anziehen der Klemmschrauben zwischen den Klemmbacken eingeklemmt werden muß, wonach ein Spannen des Nachziehseils durch Drehen der Spannschraube möglich ist. Des weiteren ist der Spannhub begrenzt, so daß es weder möglich ist, der größeren Dehnung bei sehr langen Nachziehrohren Rechnung zu tragen noch bei einem Lockern nachzuspannen.The handling of this fastening and tensioning device is cumbersome, because the jaws first Turn the tension screw as close as possible to the Pressure piece must be brought up, then that of Hand-tightened rope by tightening the clamping screws must be clamped between the jaws, after which tensioning the pull rope by turning the tension screw is possible. Furthermore, the clamping stroke limited so that it is neither possible to the larger Elongation to be taken into account with very long draw tubes to tighten even with a loosening.
Der Erfindung liegt das Problem zugrunde, eine einfach zu handhabende Befestigungs- und Spannvorrichtung zu schaffen, deren Spannhub unbegrenzt ist und die jederzeit ein einfaches Nachspannen ermöglicht.The invention is based on the problem, a simple one fastening and tensioning device to be handled create, the clamping stroke is unlimited and at any time allows easy re-tensioning.
Hiervon ausgehend besteht die Erfindung darin, eine Befestigungs- und Spannvorrichtung der eingangs erwähnten Art mit einem dem Druckstück benachbarten, bei einer in Richtung des einzuziehenden Rohrs wirkenden Kraft am Nachziehseil klemmenden Klemmelement und mit einem zum Klemmelement koaxial angeordneten, bei einer in Richtung des einzuziehenden Rohrs klemmenden, entgegengesetzt zur Richtung des einzuziehenden Rohrs wirkenden Kraft bewegbaren Spannelement zu versehen.Proceeding from this, the invention consists in a Fastening and tensioning device of the aforementioned Kind with an adjacent to the pressure piece, at one acting in the direction of the pipe to be drawn in Force on the pulling rope clamping element and with one arranged coaxially to the clamping element, at one clamping in the direction of the pipe to be drawn in, opposite towards the direction of the pipe to be drawn in Force movable clamping element to be provided.
Das Klemmelement und das Spannelement wirken selbsttätig klemmend, wenn eine in Richtung des einzuziehenden Rohrs wirkende Kraft am Nachziehseil auftritt, während das Klemmelement und das Spannelement das Nachziehseil freigeben, wenn eine Bewegung in entgegengesetzter Richtung stattfindet. Auf diese Weise ist es möglich, das Nachziehseil mittels des Spannelements durch eine Vorwärts- und Rückwärtsbewegung zu spannen, wobei das Klemmelement das Nachziehseil bei jeder Vorwärtsbewegung des Spannelements festhält und das Spannelement somit ein Seilstück ergreifen und bei der Rückwärtsbewegung wieder spannen kann.The clamping element and the tensioning element act automatically jamming when one towards the retractable Rohrs acting force on the pull rope occurs during the clamping element and the tensioning element the pull rope release when a movement in opposite Direction takes place. In this way it is possible the pull rope by means of the tensioning element through a To tension forward and backward movement, the Clamping element the pull rope with every forward movement holds the clamping element and the clamping element thus grab a piece of rope and move backwards can tighten again.
Da am Klemmelement und am Spannelement keine Schrauben zum Klemmen und Spannen betätigt werden müssen, ist die Handhabung äußerst einfach und ein Nachspannen jederzeit möglich.Since there are no screws on the clamping element and the clamping element must be actuated for clamping and tensioning Handling extremely easy and retensioning at any time possible.
Das Klemmelement kann parallele, an Parallellenkern geführte Klemmbacken aufweisen, und die Parallellenker können an einer Verlängerung des Druckstücks angelenkt sein. Durch den Zug des Nachziehseils werden die Klemmbacken an den Parallellenkern in Richtung des Druckstücks gezogen und klemmen dabei das Nachziehseil ein. In entgegengesetzter Richtung bewegen sich die Klemmbacken auseinander und geben das Nachziehseil frei.The clamping element can be parallel, on parallel core have guided jaws, and the parallel link can be articulated on an extension of the pressure piece be. By pulling the pull rope, the clamping jaws at the parallel core in the direction of the pressure piece pulled and pinch the pull rope. The jaws move in the opposite direction apart and release the pull rope.
Ein einfaches Lösen des zwischen den Klemmbacken eingeklemmten Nachziehseils läßt sich mittels einer an einem Parallellenker angeordneten Hebelverlängerung erreichen. A simple release of the clamped between the jaws Pull rope can be attached to one by one Reach parallel extension arranged lever extension.
Um unter allen Umständen ein selbsttätiges Einklemmen des Nachziehseils zu erreichen, kann das Klemmelement in Klemmrichtung mit einer Feder beaufschlagt sein.In order to ensure an automatic pinching under all circumstances to reach the pull rope, the clamping element be loaded with a spring in the clamping direction.
Das Spannelement kann ähnlich gebaut sein und ebenfalls parallele, an Parallellenkern geführte Klemmbacken aufweisen. Die Parallellenker sind an einem weiteren Lenkerpaar angelenkt, das einerseits an der Verlängerung des Druckstücks angelenkt und andererseits durch einen weiteren Lenker untereinander verbunden ist und eine Handhabe zum Spannen des Nachziehrohrs aufweist. Diese Handhabe kann aus einer Hebelverlängerung am das Lenkerpaar verbindenden Lenker bestehen.The tensioning element can be constructed similarly and also have parallel jaws guided on a parallel core. The parallel links are on another pair of links articulated on the one hand on the extension of the pressure piece and on the other hand by a another handlebar is connected to each other and one Has handle for tensioning the pull tube. This Handle can be from a lever extension on the pair of handlebars connecting links exist.
Da die Handhabe an dem Lenkerpaar angreift, lassen sich die Klemmbacken und damit das von den Klemmbacken eingeklemmte Nachziehseil in Spannrichtung bewegen, wobei die Klemmbacken des Klemmelements das Nachziehseil während dieser Bewegung freigeben. Wird das Spannelement entgegengesetzt zur Spannrichtung bewegt, halten die Klemmbacken des Klemmelements das Nachziehseil fest, während sich die Klemmbacken des Spannelements auf dem Seil verschieben können, um ein neues Seilstück zum weiteren Spannen einzuklemmen.Since the handle attacks the pair of handlebars, the jaws and thus that which is clamped by the jaws Move the pull rope in the tensioning direction, whereby the jaws of the clamping element during the pull rope release this movement. Will the tensioning element moved opposite to the tensioning direction, keep the Clamping jaws of the clamping element, the pull rope firmly while the clamping jaws of the clamping element on the Rope can move to a new piece of rope to clamp further spans.
Um das Nachziehseil auf einfache Weise mit der Befestigungs- und Spannvorrichtung zu verbinden, kann das Druckstück eine seitliche Öffnung zum Einführen des Nachziehseils aufweisen, während die Klemmbacken einseitig an den Parallellenkern geführt und somit von derselben Seite zugänglich sind, an der sich die seitliche Öffnung am Druckstück befindet. To easily pull the rope with the fastening and connecting the jig can do that Pressure piece has a side opening for inserting the Draw rope, while the jaws on one side led to the parallel core and thus by accessible on the same side as the side Opening on the pressure piece.
Zum Befestigen des Nachziehseils am Rammbohrgerät und zur Aufnahme eines Endes des einzuziehenden Rohres kann am Ende des Rammbohrgeräts eine Hülse angeordnet sein. Die Hülse oder das Rammbohrgerät weisen eine umlaufende Seilnut mit einer in das Innere der Hülse führenden Öffnung auf. Das Nachziehseil läßt sich dann durch das einzuziehende Rohr und die Hülse, durch die Öffnung hindurch und in die Seilnut legen sowie wieder zurück durch die Öffnung in das Innere der Hülse führen. Hier wird das freie Ende des Seils mit dem Seilzug fest verbunden. Um parallele Seilbereiche zwischen der Öffnung und der zugfesten Verbindung kann eine die in der Nut liegende Seilschlinge spannende Feder angeordnet sein.To attach the pull rope to the ram and for receiving one end of the pipe to be drawn in a sleeve may be arranged at the end of the ram boring machine. The sleeve or the ram boring machine have a circumferential one Rope groove with one leading into the inside of the sleeve Opening up. The pull rope can then be through pipe to be drawn in and the sleeve, through the opening through and into the rope groove and back again through the opening into the inside of the sleeve. Here the free end of the rope is firmly connected to the cable. To parallel rope areas between the opening and the tensile connection can be one in the groove lying rope loop exciting spring can be arranged.
Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels des näheren erläutert. In der Zeichnung zeigen:
- Fig. 1
- die Seitenansicht eines Rammbohrgerätes mit einem Nachziehrohr und einer Befestigungs- und Spannvorrichtung für ein Nachziehseil;
- Fig. 2
- eine vergrößerte Darstellung der Befestigungs- und Spannvorrichung und
- Fig. 3
- in einem Teilschnitt die Verwendung des Nachziehseils mit dem Rammbohrgerät.
- Fig. 1
- the side view of a ram boring machine with a pulling tube and a fastening and tensioning device for a pulling rope;
- Fig. 2
- an enlarged view of the fastening and Spannvorrichung and
- Fig. 3
- in a partial section the use of the pull rope with the ram boring machine.
Am hinteren Ende eines Rammbohrgeräts 1 ist eine Hülse
2 angeordnet, in die ein einzuziehendes Rohr 3 eingesteckt
ist. Durch das einzuziehende Rohr 3 ist ein
Nachziehseil 4 geführt, das mit dem Rammbohrgerät 1 und
der Hülse 2 verbunden ist und sich mittels einer
Befestigungs- und Spannvorrichtung spannen läßt. Zu
diesem Zweck ist am hinteren Ende des einzuziehenden
Rohrs 3 ein Druckstück 5 angeordnet, das aus einer auf
dem Rohrende aufliegenden Druckplatte 6 und einem in
das Rohrende eingeführten Rohrstutzen 7 besteht. Die
Druckplatte 6 und der Rohrstutzen 7 sind mit einem
seitlichen Schlitz 8 versehen, um das Nachziehseil 4
bequem in den Bereich eines Klemmelements 10 und eines
Spannelements 15 zu bringen.At the rear end of a ram boring machine 1 is a
Das Klemmelement 10 ist in der Nähe der Druckplatte 6
an einer Verlängerung 9 angeordnet und besteht aus parallelen
Klemmbacken 11, die mittels Parallellenkern 12
an der Verlängerung 9 angelenkt sind. Werden die Parallellenker
12 in Richtung zur Druckplatte 6, d.h. in
Richtung des einzuziehenden Rohres 3 bewegt, nähern
sich die Klemmbacken 11 gegeneinander und können das
Nachziehseil 4, wenn es sich zwischen den Klemmbacken
11 befindet, einklemmen. Je größer die auf das Nachziehseil
4 wirkende Kraft ist, desto stärker wird die
Klemmung durch die Klemmbacken 11. An einem Parallellenker
12 ist eine Hebelverlängerung 13 angeordnet, die
mittels einer Feder 14 in Richtung der Druckplatte 6
gezogen wird. Durch eine Bewegung der Hebelverlängerung
13 entgegengesetzt zur Druckplatte 6 läßt sich die
Seilklemmung durch die Klemmbacken 11 lösen. Diese
Seilklemmung wird des weiteren automatisch aufgehoben,
wenn sich das Nachziehseil 4 in entgegengesetzter Richtung
zur Druckplatte 6 bewegt. The
Diese Bewegung des Nachziehseils 4 wird durch das
Spannelement 15 bewirkt. Das Spannelement 15 weist
ebenfalls parallele Klemmbacken 16 auf, die koaxial zu
den Klemmbacken 11 und zum einzuziehenden Rohr 3 angeordnet
sind. Die Klemmbacken 16 sind an Parallellenkern
17 angeordnet, die jedoch nicht direkt an der Verlängerung
9, sondern an einem Lenkerpaar 18 angelenkt sind,
das durch einen weiteren Lenker 19 zu einem Lenkerparallelogramm
ergänzt wird. An dem weiteren Lenker 19 ist
eine Hebelverlängerung 20 angeordnet, mit der sich das
Nachziehseil 4 spannen läßt. Hierzu wird das Nachziehseil
4 zwischen die Klemmbacken 11 des Klemmelements 10
und die Klemmbacken 16 des Spannelements 15 gelegt.This movement of the
Durch Bewegen der Hebelverlängerung 20 entgegengesetzt
zur Druckplatte 6 wird das Seil durch das Klemmelement
10, das Druckstück 5 und das einzuziehende Rohr 3 gezogen
und gespannt. Wird das Spannelement 15 nunmehr in
Richtung der Druckplatte 6 bewegt, hält das Klemmelement
10 das Nachziehseil 4 fest, und das Nachziehseil
4 läßt sich durch eine erneute Bewegung des
Spannelements 15 entgegengesetzt zur Richtung der
Druckplatte 6 weiter spannen. Durch mehrfaches Bewegen
des Spannelementes 15 läßt sich jede gewünschte Vorspannung
des Nachziehseils 4 erreichen. Ebenso ist es
möglich, die Vorspannung des Nachziehseils 4, falls
diese während des Vortriebes des Rammbohrgerätes 1
nachgelassen hat, wieder zu erhöhen.By moving the
Zum Lösen der Vorspannung genügt es, das Klemmelement
10 durch Bewegen der Hebelverlängerung 13 entgegengesetzt
zur Richtung der Druckplatte 6 zu bewegen und dabei
die Klemmbacken 16 des Spannelements 15 geöffnet zu
halten.The clamping element is sufficient to release the
Eine einfache und sichere Verbindung des Nachziehseils
4 mit dem Rammbohrgerät 1 bzw. der Hülse 2 läßt sich
erreichen, wenn das Rammbohrgerät 1 oder die Hülse 2
mit einer umlaufenden Seilnut 21 versehen sind, die
über eine Öffnung 22 mit dem Innern der Hülse 2 verbunden
ist. Wird das Ende des Nachziehseils durch das
Innere der Hülse 2, die Öffnung 22, die umlaufende
Seilnut 21 und die Öffnung 22 wieder zurück in das
Innere der Hülse 2 geführt, läßt sich dieses freie Ende
mit dem Nachziehseil 4 mittels einer zugfesten Verbindung
23 verbinden, so daß das Nachziehseil 4 mittels
der in der umlaufenden Seilnut 21 liegenden Seilschlinge
sicher am Rammbohrgerät 1 und der Hülse 2 gehalten
ist.A simple and secure connection of the
Um auf die Seilverbindung eine straffende Vorspannung
aufzubringen, kann um die parallelen Seilbereiche zwischen
der Öffnung 22 und der zugfesten Verbindung 23
herum eine Druckfeder 24 angeordnet sein.To tighten the rope connection
can apply around the parallel rope areas between
the
Statt das freie Ende des Nachziehseils direkt mit dem
Rammbohrgerät 1 und der Hülse 2 in der geschilderten
Weise zu verbinden, kann es sich hier auch um ein Seilstück
handeln, dessen Enden mittels der zugfesten Verbindung
23 miteinander verbunden sind. Das Nachziehseil
4 läßt sich dann an der zugfesten Verbindung 23 einhängen. Instead of the free end of the pull rope with the
Ram drill 1 and the
Diese Verbindung hat den Vorteil, daß sich beide
Seilenden mit großen Seilkauschen oder dergleichen ausrüsten
lassen, da sich in diesem Fall die Seilschlaufe
durch die Öffnung 22 fädeln läßt, ohne die Seilkauschen
durch die kleine Öffnung 22 fädeln zu müssen.This connection has the advantage that both
Equip rope ends with large thimbles or the like
because in this case the rope loop
can thread through the
Claims (9)
- A securing and tensioning device for a towing cable (4) that is secured to a percussion boring machine (1) and connects a pipe (3) that is to be pulled in to the percussion boring machine (1), comprisinga thrust member (5) bearing on the free end of the pipe (3) that is to be pulled in,a clamping unit (10) that is adjacent to the thrust member (5) and clamps when a force acts on the towing cable (4) in the direction of the pipe (3) that is to be pulled in, anda tensioning unit (15), arranged coaxially with the clamping unit (10), that clamps when a force acts in the direction of the pipe (3) that is to be pulled in and is movable in the direction opposite to that of the pipe (3) that is to be pulled in.
- A device according to claim 1, characterised in that the clamping unit (10) has parallel clamping jaws (11) guided on parallel links (12) and that the parallel links (12) are pivoted on an extension (9) of the thrust member (5).
- A device according to claim 2, characterised in that one of the parallel links (12) has a lever extension (13) to release the clamping unit (10).
- A device according to claim 2 or claim 3, characterised by a spring (14) urging the clamping unit (10) in the clamping direction.
- A device according to one of claims 1 to 4, characterised in that the tensioning unit (15) has parallel clamping jaws (16) guided on parallel links (17), said parallel links (17) being pivoted on a further pair (18) of links which at one end are pivoted on the extension (9) of the thrust member (5) and at the other end are connected together by a further link (19) and with which a handle (20) for tensioning the pipe (3) to be pulled in engages.
- A device according to claim 5, characterised in that the handle consists of a lever extension (20) on the link (19) connecting the pair (18) of links.
- A device according to one of claims 1 to 6, characterised in that the thrust member (5) has a lateral opening (8) for introduction of the towing cable (4) and that the clamping jaws (11, 16) are guided at one side on the parallel links (12, 17).
- A device according to one of claims 1 to 7, characterised in that at the end of the percussion boring machine (1) there is a sleeve (2) to receive one end of the pipe (3) to be pulled in, that the sleeve (2) or the percussion boring machine (1) has running round it a cable groove (21) with an opening (22) leading into the interior of the sleeve (2), and that the towing cable (4) runs through the pipe (3) to be pulled in and the sleeve (2), through the opening (22) and in the cable groove (21) and back again through the opening (22), and that the free end is connected to the cable (4) in a tension-proof manner.
- A device according to claim 8, characterised in that a spring (24) tensioning the cable loop lying in the groove (21) is arranged round parallel cable regions between the opening (22) and the tension-proof connection (23).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4427119 | 1994-07-30 | ||
DE4427119A DE4427119C2 (en) | 1994-07-30 | 1994-07-30 | Fastening and tensioning device for a pull rope connected to a ram boring machine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0694675A1 EP0694675A1 (en) | 1996-01-31 |
EP0694675B1 true EP0694675B1 (en) | 1999-10-06 |
Family
ID=6524591
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95111830A Expired - Lifetime EP0694675B1 (en) | 1994-07-30 | 1995-07-28 | Fixing and clamping tensioning device for a tow rope connected to a boring ram |
Country Status (4)
Country | Link |
---|---|
US (1) | US5642786A (en) |
EP (1) | EP0694675B1 (en) |
JP (1) | JP2885667B2 (en) |
DE (2) | DE4427119C2 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19608056C1 (en) * | 1996-03-02 | 1997-10-30 | Tracto Technik | Device for connecting a pipe string to a device for making earth bores |
GB2391601A (en) | 2001-05-25 | 2004-02-11 | Tracto Technik | Cable pull device for pulling in pipes |
DE10125869C2 (en) * | 2001-05-25 | 2003-07-17 | Tracto Technik | Cable pulling device and method |
US6672802B2 (en) * | 2001-09-24 | 2004-01-06 | Samuel W. Putnam | Vertical pull apparatus |
DE102006033753B4 (en) * | 2005-11-21 | 2015-03-12 | Tracto-Technik Gmbh | System and method for tensioning strand sections into a strand |
DE202006011507U1 (en) | 2006-07-24 | 2006-10-26 | Tracto-Technik Gmbh | Threaded pipe section connecting device for use with pulling unit, has rocker arm including support section designed for supporting at threaded section and moved from retracted position into assembly position |
DE102006045557B4 (en) | 2006-09-25 | 2009-06-18 | Tracto-Technik Gmbh | Gestängemitnehmer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR689873A (en) * | 1930-02-14 | 1930-09-12 | Thread tensioner | |
DE2611676A1 (en) * | 1976-03-19 | 1977-09-29 | Paul Schmidt | METHOD AND DEVICE FOR DRILLING GROUND HOLES FOR SOUND ANCHORS |
DE2611677C3 (en) * | 1976-03-19 | 1980-03-13 | Paul 5940 Lennestadt Schmidt | Device for introducing pipes |
GB2126267A (en) * | 1982-09-07 | 1984-03-21 | Coal Ind | Drilling methods and equipment |
DE3634579A1 (en) * | 1986-10-10 | 1988-04-21 | Paul Schmidt | PNEUMATIC DRILL DRILL |
-
1994
- 1994-07-30 DE DE4427119A patent/DE4427119C2/en not_active Expired - Fee Related
-
1995
- 1995-07-28 EP EP95111830A patent/EP0694675B1/en not_active Expired - Lifetime
- 1995-07-28 US US08/508,663 patent/US5642786A/en not_active Expired - Fee Related
- 1995-07-28 DE DE59506976T patent/DE59506976D1/en not_active Expired - Lifetime
- 1995-07-31 JP JP7214047A patent/JP2885667B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US5642786A (en) | 1997-07-01 |
DE4427119A1 (en) | 1996-02-01 |
DE59506976D1 (en) | 1999-11-11 |
JPH08170479A (en) | 1996-07-02 |
JP2885667B2 (en) | 1999-04-26 |
EP0694675A1 (en) | 1996-01-31 |
DE4427119C2 (en) | 1998-07-09 |
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