EP0518298B1 - Milling device for slits and milling method - Google Patents
Milling device for slits and milling method Download PDFInfo
- Publication number
- EP0518298B1 EP0518298B1 EP92109767A EP92109767A EP0518298B1 EP 0518298 B1 EP0518298 B1 EP 0518298B1 EP 92109767 A EP92109767 A EP 92109767A EP 92109767 A EP92109767 A EP 92109767A EP 0518298 B1 EP0518298 B1 EP 0518298B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- control
- milling
- cutter frame
- cutter
- frame
- 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
- 238000003801 milling Methods 0.000 title claims description 75
- 238000005520 cutting process Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/20—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels
- E02F3/205—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels with tools that only loosen the material, i.e. mill-type wheels with a pair of digging wheels, e.g. slotting machines
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C25/00—Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/18—Dredgers; Soil-shifting machines mechanically-driven with digging wheels turning round an axis, e.g. bucket-type wheels
- E02F3/22—Component parts
- E02F3/26—Safety or control devices
Definitions
- the invention relates to a trench cutter according to the preamble of claim 1 and a method for milling a trench wall according to the preamble of claim 10.
- a milling frame with cutting wheels is lowered onto the floor on a carrying device.
- the rotary movement of the milling wheels removes the soil below the milling frame and creates a diaphragm wall by repeating this process in horizontally spaced positions.
- the milling direction of the milling frame is determined vertically downwards by its own weight. As a result, only vertical diaphragm walls can be produced with the known trench wall cutter.
- the milling direction also points away from the vertical if the distribution of the rock layers in the soil is not homogeneous. If the milling frame encounters thicker rock layers on one side, it will usually move to the other side.
- FR-A 25 73 475 describes a trench wall cutter for the extraction of uranium ore, which is used in excavation tunnels above an ore deposit and mines the ore vertically downwards.
- the trench wall cutter has a rectangular milling frame and guide plates in the area of the vertical walls, which are to serve as control elements for the most exact excavation possible and for efficient mining of the ore deposit.
- each guide plate can be adjusted outwards parallel to the vertical wall. The inclination of the milling frame and the diaphragm wall is not measured or checked.
- the invention has for its object to provide a trench cutter and a method for milling a trench wall, which enable a controllable and controllable production of trench walls with an exactly predetermined direction.
- control elements are preferably designed as control flaps which are arranged on the vertical side walls of the milling frame.
- the control flaps can be operated via a hydraulic system with a hydraulic cylinder which is arranged between the milling frame and the control flap.
- the control flaps are elongated and arranged vertically on the sides of the milling frame running parallel to the direction of advance.
- a control flap is arranged on the broad sides of the milling frame in the corner regions thereof. Due to the vertical alignment of the control flaps, these can be pretensioned against the diaphragm wall either at the lower end or at the upper end, as a result of which a torque is generated in the predetermined direction on the milling frame.
- the hydraulic cylinders for driving the control flaps are provided with a displacement sensor and a pressure switch, the displacement sensor on the one hand showing how far the control flap protrudes from the outer contour of the milling frame, which in turn allows conclusions to be drawn about the inclination of the milling frame and the diaphragm wall.
- the measured values are fed to a control device, which in turn controls the drives for the control flaps of the milling frame.
- An inclinometer is arranged in the milling frame, the output signal of which is evaluated for direction correction. The evaluation in turn takes place in the control device and is used to control the drives for the control flaps.
- Directional corrections when milling the diaphragm wall can be carried out in a simple manner if the milling frame is clamped into place by lowering the slot by actuating the control elements.
- the inclination of the milling frame is then measured with the inclinometer on the milling frame. This process is repeated at different depths with a distance of at least 1 m. The inclination of the slot can be calculated from these measured values.
- the control device can determine the data for the actuation of the control flaps to determine the further milling direction from the calculated inclination value.
- the further milling process is thus carried out with a changed milling direction, which is obtained in that the control elements clamp the milling frame in the slot in a certain direction.
- the hydraulic cylinders or pistons for actuating the control flaps are each attached to the milling frame or the control flap via eyes.
- the hydraulic cylinder is also mounted in a plastic sleeve, which means that the hydraulic system only absorbs forces in the axial direction and is relieved of transverse forces.
- the trench wall cutter 10 consists of a rail-guided carriage 12 with an extension arm 14, on which a milling frame 18 is suspended via a supporting cable 16. On the milling frame 18 there are two pairs of milling wheels 20 which are driven by two hydraulic motors 22. Lateral control of the Milling frame 18 in the slot 24 is realized by elongated control flaps 26, 28 which are arranged on the vertical broad or narrow sides of the milling frame 18.
- the control flaps 26, 28 are actuated via two hydraulic lines 30 and a valve arrangement arranged in the milling frame.
- FIG. 2 shows a partially cut section of the milling frame 18 from FIG. 1. Identical parts are provided with identical reference numbers.
- the control flap 26 is in a first non-extended position within the outer contour 32 of the milling frame 18. At its upper and lower ends, the control flap 26 is fastened to the milling frame 18 with a hydraulic cylinder 34, 36 in each case.
- the control flap 26 is articulated to the hydraulic cylinders 34, 36 via eyes 38. As a result, no bending forces act on the hydraulic cylinders if only the lower or upper end of the control flap 26 is extended by corresponding actuation of the respective hydraulic cylinder 34, 36.
- both hydraulic cylinders 34, 36 are extended, the control flap 26 can be moved outward parallel to the outer contour 32 of the milling frame 18 and thus clamp the milling frame 18 in the diaphragm wall 24 over a large area.
- the actuation of the hydraulic cylinders 34, 36 is monitored via displacement transducers 40, which emit an output signal that provides information about how far the hydraulic cylinders 34, 36 have been extended.
- pressure switches (not shown) are also arranged, which respond when the control flap 26 abuts the diaphragm wall.
- the inclination of the diaphragm wall and / or the inclination of the milling frame can be determined and used to control the further advance.
- the milling frame 18 is preferably fixed in the slot 24 by extending the control flaps 26, 28 and the inclination is measured. This process is repeated at different depths of the slot, with a distance of at least 1 m between the measuring points.
- the inclination of the slot is calculated from the measured values of the inclinometer and / or the displacement transducers 40 thus obtained.
- the direction correction is carried out either manually or automatically by extending the corresponding control flaps or the corresponding control flap.
- the extension of the control flap can be varied by extending only the upper end or only the lower end or the entire control flap.
- control flaps 26 are provided for jamming the milling frame 18 transversely to the plane of the diaphragm wall 24, while the control flaps 28 are provided for fixing to an end wall, that is to say in the plane of the diaphragm wall. These control flaps 28 are therefore primarily relevant when the milling frame is lowered into the ground for the first time. The control flaps 26, 28 can thus be used to correct the direction of the milling frame in the entire horizontal plane.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Milling Processes (AREA)
- Pit Excavations, Shoring, Fill Or Stabilisation Of Slopes (AREA)
- Handling Of Sheets (AREA)
- Turning (AREA)
- Crushing And Pulverization Processes (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
Die Erfindung betrifft eine Schlitzwandfräse gemäß dem Oberbegriff des Anspruchs 1 und ein Verfahren zum Fräsen einer Schlitzwand gemäß dem Oberbegriff des Anspruchs 10.The invention relates to a trench cutter according to the preamble of claim 1 and a method for milling a trench wall according to the preamble of
In herkömmlichen Schlitzwandfräsen wird ein Fräsrahmen mit Fräsrädern an einer Tragevorrichtung auf den Boden herabgelassen. Durch die Drehbewegung der Fräsräder wird der Boden unterhalb des Fräsrahmens abgetragen und eine Schlitzwand entsteht, indem dieser Vorgang in horizontal beabstandeten Positionen wiederholt wird. Die Fräsrichtung des Fräsrahmens wird durch dessen Eigengewicht vertikal nach unten vorgegeben. Hierdurch können mit der bekannten Schlitzwandfräse nur vertikale Schlitzwände hergestellt werden. Die Fräsrichtung weist fernerhin von der Vertikalen ab, wenn die Verteilung der Gesteinsschichten im Boden nicht homogen ist. Wenn der Fräsrahmen einseitig auf dichtere Gesteinsschichten trifft, wird er in der Regel zur anderen Seite hin ausweichen.In conventional trench wall cutters, a milling frame with cutting wheels is lowered onto the floor on a carrying device. The rotary movement of the milling wheels removes the soil below the milling frame and creates a diaphragm wall by repeating this process in horizontally spaced positions. The milling direction of the milling frame is determined vertically downwards by its own weight. As a result, only vertical diaphragm walls can be produced with the known trench wall cutter. The milling direction also points away from the vertical if the distribution of the rock layers in the soil is not homogeneous. If the milling frame encounters thicker rock layers on one side, it will usually move to the other side.
In der FR-A 25 73 475 ist eine Schlitzwandfräse zum Abbau von Uranerz beschrieben, welche in Vortriebsstollen oberhalb eines Erzlagers eingesetzt wird und nach vertikal unten den Abbau des Erzes vornimmt. Die Schlitzwandfräse weist einen quaderförmigen Fräsrahmen und im Bereich der vertikalen Wände Führungsplatten auf, die als Steuerelemente für eine möglichst exakte Ausschachtung und einen effizienten Abbau des Erzlagers dienen sollen. Mit Hilfe eines Hebelsystems und einer Hydraulik-Zylinderanordnung ist jede Führungsplatte parallel zur vertikalen Wand nach außen zu verstellen. Eine Messung oder Kontrolle der Neigung des Fräsrahmens und der Schlitzwand wird nicht durchgeführt.FR-A 25 73 475 describes a trench wall cutter for the extraction of uranium ore, which is used in excavation tunnels above an ore deposit and mines the ore vertically downwards. The trench wall cutter has a rectangular milling frame and guide plates in the area of the vertical walls, which are to serve as control elements for the most exact excavation possible and for efficient mining of the ore deposit. With the help of a lever system and a hydraulic cylinder arrangement, each guide plate can be adjusted outwards parallel to the vertical wall. The inclination of the milling frame and the diaphragm wall is not measured or checked.
Der Erfindung liegt die Aufgabe zugrunde, eine Schlitzwandfräse und ein Verfahren zum Fräsen einer Schlitzwand anzugeben, welche eine kontrollierbare und steuerbare Herstellung von Schlitzwänden mit einer exakt vorgegebenen Richtung ermöglichen.The invention has for its object to provide a trench cutter and a method for milling a trench wall, which enable a controllable and controllable production of trench walls with an exactly predetermined direction.
Die Aufgabe wird erfindungsgemäß bei einer Schlitzwandfräse der gattungsgemäßen Art durch die kennzeichnenden Merkmale des Anspruchs 1 und bei einem Verfahren zum Fräsen einer Schlitzwand durch die kennzeichnenden Merkmale des Anspruchs 10 gelöst. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche.The object is achieved in a trench cutter of the generic type by the characterizing features of claim 1 and in a method for milling a trench wall by the characterizing features of
Erfindungsgemäß weist eine Schlitzwandfräse mit einem Fräsrahmen, an dem mindestens ein Paar Fräsräder und mindestens ein Steuerelement angeordnet sind, wobei das Steuerelement zwischen einer innerhalb der Außenkontur des Fräsrahmens liegenden ersten Stellung und einer über die Außenkontur des Fräsrahmens hinausragenden zweiten Stellung betätigbar ist, mindestens einen Antrieb auf, welcher mit einem Wegaufnehmer und mit einem Druckschalter versehen ist. Da der Fräsrahmen einen Neigungsmesser aufweist, ist gemäß der Erfindung vorgesehen, die Ausgangssignale des Wegaufnehmers, des Druckschalters und des Neigungsmessers einer Steuereinrichtung zur Steuerung des Antriebs zuzuführen.According to the invention, a trench wall cutter with a milling frame on which at least a pair of milling wheels and at least one control element are arranged, the control element being operable between a first position lying inside the outer contour of the milling frame and a second position projecting beyond the outer contour of the milling frame on, which is provided with a displacement transducer and a pressure switch. Since the milling frame has an inclinometer, it is provided according to the invention to supply the output signals of the displacement sensor, the pressure switch and the inclinometer to a control device for controlling the drive.
Indem am Fräsrahmen Steuerelemente angeordnet sind, die derart betätigt werden können, daß sie über die Außenkontur des Fräsrahmens hinausragen, kann der Fräsrahmen in der Schlitzwand in vorgegebenen Positionen festgeklemmt werden. Die Fräsrichtung kann hierdurch sehr genau eingestellt werden. In nicht homogenen Bodenschichten kann auf diese Weise vermieden werden, daß der Fräsrahmen seitlich von der Vertikalen abweicht, was die Herstellung exakt vertikaler Schlitzwände auch in derartigen Böden ermöglicht. Die Steuerelemente sind vorzugsweise als Steuerklappen ausgebildet, die an den vertikalen Seitenwänden des Fräsrahmens angeordnet sind. Die Steuerklappen können über ein Hydrauliksystem mit einem Hydraulikzylinder betätigt werden, der zwischen dem Fräsrahmen und der Steuerklappe angeordnet ist. Die Steuerklappen sind länglich ausgebildet und vertikal an den parallel zur Vortriebsrichtung verlaufenden Seiten des Fräsrahmens angeordnet. An den Breitseiten des Fräsrahmens ist in deren Eckbereichen jeweils eine Steuerklappe angeordnet. Durch die vertikale Ausrichtung der Steuerklappen können diese entweder am unteren Ende oder am oberen Ende gegen die Schlitzwand vorgespannt werden, wodurch auf den Fräsrahmen ein Drehmoment in vorgegebener Richtung erzeugt wird. Die Hydraulikzylinder zum Antrieb der Steuerklappen sind mit einem Wegaufnehmer und einem Druckschalter versehen, wobei der Wegaufnehmer zum einen anzeigt, wie weit die Steuerklappe von der Außenkontur des Fräsrahmens hervorsteht, was wiederum Rückschlüsse auf die Neigung des Fräsrahmens und der Schlitzwand zuläßt. Die Meßwerte werden einer Steuereinrichtung zugeführt, die wiederum die Antriebe für die Steuerklappen des Fräsrahmens regelt. In dem Fräsrahmen ist ein Neigungsmesser angeordnet, dessen Ausgangssignal zur Richtungskorrektur ausgewertet werden. Die Auswertung erfolgt wiederum in der Steuereinrichtung und dient zur Ansteuerung der Antriebe für die Steuerklappen. Richtungskorrekturen beim Fräsen der Schlitzwand können auf einfache Weise durchgeführt werden, wenn der Fräsrahmen beim Herablassen in den Schlitz durch Betätigung der Steuerelemente festgeklemmt wird. Anschließend wird mit dem am Fräsrahmen angeordneten Neigungsmesser die Neigung des Fräsrahmens gemessen. Dieser Vorgang wird in unterschiedlichen Tiefen mit mindestens 1 m Abstand wiederholt. Aus diesen Meßwerten läßt sich die Neigung des Schlitzes errechnen. Aus dem errechneten Neigungswert kann die Steuereinrichtung die Daten für die Betätigung der Steuerklappen zur Festlegung der weiteren Fräsrichtung ermitteln. Der weitere Fräsvorgang wird also mit einer veränderten Fräsrichtung durchgeführt, die dadurch erhalten wird, daß die Steuerelemente den Fräsrahmen im Schlitz in einer bestimmten Richtung festspannen.By arranging control elements on the milling frame that can be actuated in such a way that they protrude beyond the outer contour of the milling frame, the milling frame can be clamped in the slot wall in predetermined positions. This allows the milling direction to be set very precisely. In non-homogeneous soil layers it can be avoided in this way that the milling frame deviates laterally from the vertical, which enables the production of exactly vertical slotted walls even in such floors. The control elements are preferably designed as control flaps which are arranged on the vertical side walls of the milling frame. The control flaps can be operated via a hydraulic system with a hydraulic cylinder which is arranged between the milling frame and the control flap. The control flaps are elongated and arranged vertically on the sides of the milling frame running parallel to the direction of advance. A control flap is arranged on the broad sides of the milling frame in the corner regions thereof. Due to the vertical alignment of the control flaps, these can be pretensioned against the diaphragm wall either at the lower end or at the upper end, as a result of which a torque is generated in the predetermined direction on the milling frame. The hydraulic cylinders for driving the control flaps are provided with a displacement sensor and a pressure switch, the displacement sensor on the one hand showing how far the control flap protrudes from the outer contour of the milling frame, which in turn allows conclusions to be drawn about the inclination of the milling frame and the diaphragm wall. The measured values are fed to a control device, which in turn controls the drives for the control flaps of the milling frame. An inclinometer is arranged in the milling frame, the output signal of which is evaluated for direction correction. The evaluation in turn takes place in the control device and is used to control the drives for the control flaps. Directional corrections when milling the diaphragm wall can be carried out in a simple manner if the milling frame is clamped into place by lowering the slot by actuating the control elements. The inclination of the milling frame is then measured with the inclinometer on the milling frame. This process is repeated at different depths with a distance of at least 1 m. The inclination of the slot can be calculated from these measured values. The control device can determine the data for the actuation of the control flaps to determine the further milling direction from the calculated inclination value. The further milling process is thus carried out with a changed milling direction, which is obtained in that the control elements clamp the milling frame in the slot in a certain direction.
Die Hydraulikzylinder oder Kolben zur Betätigung der Steuerklappen sind jeweils über Augen am Fräsrahmen bzw. an der Steuerklappe befestigt. Der Hydraulikzylinder ist ferner in einer Kunststoffhülse gelagert, wodurch die Hydraulik lediglich Kräfte in Achsrichtung aufnimmt und von Querkräften entlastet ist.The hydraulic cylinders or pistons for actuating the control flaps are each attached to the milling frame or the control flap via eyes. The hydraulic cylinder is also mounted in a plastic sleeve, which means that the hydraulic system only absorbs forces in the axial direction and is relieved of transverse forces.
Die Erfindung wird nachfolgend beispielsweise in der schematischen Zeichnung beschrieben. In dieser zeigen:
- Fig.1
- eine Schlitzwandfräse mit einem Fräsrahmen, der sechs Steuerklappen zur Festlegung der Fräsrichtung aufweist, und
- Fig.2
- einen Schnitt II-II aus Fig.1.
- Fig. 1
- a trench wall cutter with a milling frame, which has six control flaps for determining the milling direction, and
- Fig. 2
- a section II-II of Fig.1.
Die Schlitzwandfräse 10 besteht aus einem schienengeführten Wagen 12 mit einem Ausleger 14, an dem über ein Tragseil 16 ein Fräsrahmen 18 aufgehängt ist. An dem Fräsrahmen 18 befinden sich zwei Paar Fräsräder 20, die von zwei Hydromotoren 22 angetrieben werden. Eine seitliche Steuerung des Fräsrahmens 18 in dem Schlitz 24 wird durch längliche Steuerklappen 26,28 realisiert, die an den vertikalen Breit- bzw. Schmalseiten des Fräsrahmens 18 angeordnet sind.The
Die Steuerklappen 26,28 werden über zwei Hydraulikleitungen 30 und eine im Fräsrahmen angeordnete Ventilanordnung betätigt.The
Fig. 2 zeigt einen teilgeschnittenen Ausschnitt des Fräsrahmens 18 aus Fig. 1. Identische Teile sind hierbei mit identischen Bezugszeichen versehen. Die Steuerklappe 26 liegt in einer ersten nicht ausgefahrenen Stellung innerhalb der Außenkontur 32 des Fräsrahmens 18. An seinem oberen und unteren Ende ist die Steuerklappe 26 mit jeweils einem Hydraulikzylinder 34,36 an dem Fräsrahmen 18 befestigt. Die Steuerklappe 26 ist über Augen 38 gelenkig mit den Hydraulikzylindern 34,36 verbunden. Hierdurch wirken auf die Hydraulikzylinder keine Biegekräfte ein, wenn lediglich das untere oder obere Ende der Steuerklappe 26 durch entsprechende Betätigung des jeweiligen Hydraulikzylinder 34,36 ausgefahren wird. Wenn beide Hydraulikzylinder 34,36 ausgefahren werden, kann die Steuerklappe 26 parallel zur Außenkontur 32 des Fräsrahmens 18 nach außen gefahren werden und so den Fräsrahmen 18 in der Schlitzwand 24 großflächig festklemmen. Die Betätigung der Hydraulikzylinder 34,36 wird über Wegaufnehmer 40 überwacht, die ein Ausgangssignal abgeben, das Auskunft darüber gibt, wie weit die Hydraulikzylinder 34,36 ausgefahren sind. In den Hydraulikzylindern 34,36 sind weiterhin nicht dargestellte Druckschalter angeordnet, die ansprechen, wenn die Steuerklappe 26 an der Schlitzwand anstößt. Anhand dieser Signale und des Signals eines im Fräsrahmen 18 angeordneten, nicht dargestellten Neigungsmessers kann die Neigung der Schlitzwand und/oder die Neigung des Fräsrahmens ermittelt werden und zur Steuerung des weiteren Vortriebs verwendet werden.FIG. 2 shows a partially cut section of the
Vorzugsweise wird hierzu der Fräsrahmen 18 durch Ausfahren der Steuerklappen 26,28 im Schlitz 24 festgelegt und die Neigung gemessen. Dieser Vorgang wird in unterschiedlichen Tiefen des Schlitzes wiederholt, wobei zwischen den Meßpunkten mindestens 1 m Abstand gehalten wird. Aus den so erhaltenen Meßwerten des Neigungsmessers und/oder der Wegaufnehmer 40 wird die Neigung des Schlitzes errechnet. Die Richtungskorrektur wird entweder manuell oder automatisch durch Ausfahren der entsprechenden Steuerklappen oder der entsprechenden Steuerklappe vorgenommen. Das Ausfahren der Steuerklappe kann durch Ausfahren lediglich des oberen Endes oder nur des unteren Endes oder der gesamten Steuerklappe variiert werden . Durch eine derartige Festlegung des Fräsrahmens 18 im Schlitz 24 wird die weitere Fräsrichtung festgelegt und eine falsche Neigung der Schlitzwand kann auf diese Weise korrigiert werden.For this purpose, the
Die Steuerklappen 26 sind für eine Verklemmung des Fräsrahmens 18 quer zur Ebene der Schlitzwand 24 vorgesehen, während die Steuerklappen 28 für eine Festlegung an einer Stirnwand, also in der Ebene der Schlitzwand, vorgesehen sind. Diese Steuerklappen 28 sind demnach in erster Linie relevant, wenn der Fräsrahmen das erste Mal in den Boden abgesenkt wird. Somit kann durch die Steuerklappen 26,28 eine Richtungskorrektur des Fräsrahmens in der gesamten horizontalen Ebene durchgeführt werden.The control flaps 26 are provided for jamming the
Claims (13)
- Slotted wall milling cutter with a cutter frame (18) on which are arranged at least one pair of cutter wheels (20) and at least one control element (26, 28),wherein said control element (26, 28) is operable between a first position within the outer contour (32) of the cutter frame (18) and a second position projecting over the outer contour (32) of the cutter frame (18) by means of at least one drive (34, 36),
characterized in that
the drive (34, 36) is provided with a strain gauge (40) and a pressure switch,
that the cutter frame (18) has an inclinometer and that the output signals of the strain gauge (40), the pressure switch and/or the inclinometer are supplied to a control mechanism for controlling the drive. - Slotted wall milling cutter according to claim 1,
characterized in that
the cutter frame (18) has a parallelepipedic outer contour (32) and on each vertically directed side wall of the cutter frame (18) is provided at least one control element (26, 28). - Slotted wall milling cutter according to claims 1 or 2,
characterized in that
the cutter frame (18) has a vertical wide side and a vertical narrow side and in that in the two corner regions of each wide side is in each case provided a control element (26). - Slotted wall milling cutter according to one of the claims 1 to 3,
characterized in that
the control element (26, 28) is constructed as a control flap. - Slotted wall milling cutter according to one of the preceding claims,
characterized in that
the drive is constructed as a hydraulic drive. - Slotted wall milling cutter according to claims 4 or 5,
characterized in that
elongated control flaps (26, 28) are vertically positioned and are operable by means of at least two drives (34, 36), particularly hydraulic cylinders, directed at right angles to the longitudinal direction of the control flaps (26, 28). - Slotted wall milling cutter according to one of the claims 4 to 6,
characterized in that
several control flaps (26, 28) are operable by means of an electrically controlled valve arrangement located on the cutter frame (18). - Slotted wall milling cutter according to claims 5 or 6,
characterized in that
the hydraulic drive is constructed as a hydraulic cylinder (34, 36), which is fixed in articulated manner by means of eyelets (38) to the cutter frame (18) or to the control flap (26, 28). - Slotted wall milling cutter according to claim 8,
characterized in that
the hydraulic cylinder (34, 36) is mounted in a plastic sleeve. - Method for cutting a diaphragm wall, in which a cutter frame (18) is vertically moved, held on a support mechanism (14) and is fixed in different depths of the diaphragm wall (24) by means of control elements (26, 28),
characterized in that
the inclination of the cutter frame (18) is measured at different depths of the diaphragm wall (24) and that for the further milling process control elements (26, 28) on the cutter frame (18) are operated in such a way that they project at certain points over the outer contour (32) of the cutter frame (18) and consequently fix the further milling direction, whilst taking account of the measured inclination values. - Method according to claim 10,
characterized in that
the cutter frame (18) is fixed at different depths of the diaphragm wall (24) by means of the control elements (26, 28). - Method according to claims 10 or 11,
characterized in that
a clearance is provided for the control elements (26, 28) not required for setting the milling direction. - Method according to claim 12,
characterized in that
a clearance of at least 10 mm is set.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4119212A DE4119212C2 (en) | 1991-06-11 | 1991-06-11 | Process for milling a diaphragm wall |
| DE4119212 | 1991-06-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0518298A1 EP0518298A1 (en) | 1992-12-16 |
| EP0518298B1 true EP0518298B1 (en) | 1995-11-02 |
Family
ID=6433678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92109767A Expired - Lifetime EP0518298B1 (en) | 1991-06-11 | 1992-06-10 | Milling device for slits and milling method |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0518298B1 (en) |
| JP (1) | JP2598205B2 (en) |
| KR (1) | KR100259833B1 (en) |
| AT (1) | ATE129766T1 (en) |
| DE (2) | DE4119212C2 (en) |
| TW (1) | TW206178B (en) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5836089A (en) * | 1993-02-22 | 1998-11-17 | Lipsker; Yitshaq | Excavating equipment fitted with surface clamps |
| IL104820A (en) * | 1993-02-22 | 1995-11-27 | Lipsker Yitschaq | Excavating machinery |
| DE29522060U1 (en) * | 1994-12-09 | 1999-07-29 | Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 41812 Erkelenz | Slot milling machine |
| IT1285259B1 (en) * | 1996-02-26 | 1998-06-03 | Soilmec Spa | DEVICE FOR ADJUSTING THE INCLINATION OF AN EXCAVATION HEAD FOR THE CONSTRUCTION OF CONCRETE DIAPHRAGMs. |
| FR2765257B1 (en) * | 1997-06-25 | 1999-09-03 | Bachy | IMPROVED CABLE EXCAVATOR |
| TW424122B (en) * | 1997-09-18 | 2001-03-01 | Bauer Spezialtiefbau | Slurry wall means |
| FR2771429B1 (en) * | 1997-11-25 | 2000-02-18 | Sol Comp Du | VERTICAL CORRECTION DRILL BUCKET |
| EP1630301B1 (en) * | 2004-08-12 | 2007-10-17 | BAUER Maschinen GmbH | Method and apparatus for earth working |
| EP1630297A1 (en) * | 2004-08-20 | 2006-03-01 | BAUER Maschinen GmbH | Method of making concrete underground walls and device therefor |
| DE502004005279D1 (en) † | 2004-08-23 | 2007-11-29 | Bauer Maschinen Gmbh | Apparatus and method for creating a diaphragm wall in the ground |
| EP1703023B1 (en) | 2005-03-18 | 2011-06-22 | BAUER Maschinen GmbH | Slit wall digging device with direction control system |
| ITTO20050503A1 (en) * | 2005-07-22 | 2007-01-23 | Soilmec Spa | DEVICE AND METHOD OF MIXTURE OF LAND ON THE SITE FOR THE FORMATION OF UNDERGROUND WALLS OR DIAPHRAGMS. |
| DE102007035591B3 (en) | 2007-07-30 | 2008-10-23 | Bauer Maschinen Gmbh | Civil engineering device for creating slots in the ground |
| CN101614016B (en) * | 2008-06-26 | 2011-11-02 | 上海金泰工程机械有限公司 | Feeding device of underground lateral trenching and milling device |
| IT1394900B1 (en) * | 2009-06-09 | 2012-07-20 | Soilmec Spa | EXCAVATION DEVICE AND ANALYSIS OF THE EXCAVATION PROFILE OF THE SAME AND ASSOCIATED METHOD. |
| FR3041024B1 (en) * | 2015-09-10 | 2017-09-29 | Soletanche Freyssinet | DRILLING MACHINE WITH AN ANCHORING DEVICE FOR HORIZONTAL MOVEMENT OF THE DRILLING MODULE IN ANCHORED POSITION |
| IT201700112156A1 (en) | 2017-10-06 | 2019-04-06 | Soilmec Spa | EXCAVATION TOOL FOR DIAPHRAGM AND RELATIVE EXCAVATION EQUIPMENT |
| CN109016181A (en) * | 2018-08-28 | 2018-12-18 | 青岛丰光精密机械股份有限公司 | A kind of inner hole key slot milling attachment and method for milling |
| CN110878569A (en) * | 2019-12-23 | 2020-03-13 | 北京三一智造科技有限公司 | Grab bucket deviation correcting device and trenching machine |
| EP4063568B1 (en) * | 2021-03-23 | 2023-10-04 | BAUER Maschinen GmbH | Measurement assembly and erosion device with a measurement assembly |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD113159A3 (en) * | 1970-11-06 | 1975-05-20 | ||
| FR2536455A1 (en) * | 1982-11-19 | 1984-05-25 | Soletanche | DEVICE FOR ENSURING VERTICALITY OF A PERFORATION MACHINE |
| DD223195A1 (en) * | 1983-12-30 | 1985-06-05 | Braunkohlenbohrungen U Schacht | PROCESS FOR PROTECTION OF SLIM GUIDANCE PAVES |
| FR2573475B1 (en) * | 1984-11-16 | 1987-10-16 | Soletanche | NEW PROCESS FOR THE EXPLOITATION OF ORE DEPOSITS |
| US4718504A (en) * | 1985-03-15 | 1988-01-12 | Tone Boring Co., Ltd. | Trench excavator |
| DE3615068C1 (en) * | 1986-05-03 | 1987-10-08 | Dyckerhoff & Widmann Ag | Rope-guided trench-wall grab |
| DE3805868A1 (en) * | 1988-02-25 | 1989-09-07 | Hochtief Ag Hoch Tiefbauten | Rope-guided trench-wall grab |
| AT394779B (en) * | 1988-12-20 | 1992-06-25 | Universale Grundbau | INCLINATION MEASURING SYSTEM FOR SLOT WALLS |
-
1991
- 1991-06-11 DE DE4119212A patent/DE4119212C2/en not_active Expired - Fee Related
-
1992
- 1992-06-10 AT AT92109767T patent/ATE129766T1/en not_active IP Right Cessation
- 1992-06-10 DE DE59204177T patent/DE59204177D1/en not_active Expired - Fee Related
- 1992-06-10 KR KR1019920010094A patent/KR100259833B1/en not_active IP Right Cessation
- 1992-06-10 EP EP92109767A patent/EP0518298B1/en not_active Expired - Lifetime
- 1992-06-11 JP JP4177447A patent/JP2598205B2/en not_active Expired - Fee Related
- 1992-08-08 TW TW081106291A patent/TW206178B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| KR100259833B1 (en) | 2000-06-15 |
| KR930000796A (en) | 1993-01-15 |
| JPH06316933A (en) | 1994-11-15 |
| DE59204177D1 (en) | 1995-12-07 |
| TW206178B (en) | 1993-05-21 |
| ATE129766T1 (en) | 1995-11-15 |
| EP0518298A1 (en) | 1992-12-16 |
| DE4119212A1 (en) | 1992-12-17 |
| JP2598205B2 (en) | 1997-04-09 |
| DE4119212C2 (en) | 1996-06-27 |
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