EP3551829B1 - Bohrmaschine mit einer schnecke und vorrichtung zum reinigen der schnecke - Google Patents

Bohrmaschine mit einer schnecke und vorrichtung zum reinigen der schnecke Download PDF

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Publication number
EP3551829B1
EP3551829B1 EP17822403.6A EP17822403A EP3551829B1 EP 3551829 B1 EP3551829 B1 EP 3551829B1 EP 17822403 A EP17822403 A EP 17822403A EP 3551829 B1 EP3551829 B1 EP 3551829B1
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EP
European Patent Office
Prior art keywords
carriage
mast
speed
auger
drilling machine
Prior art date
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Application number
EP17822403.6A
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English (en)
French (fr)
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EP3551829A1 (de
Inventor
Laurent Pivert
Régis Bernazinski
Marie Lebreton
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Soletanche Freyssinet SA
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Soletanche Freyssinet SA
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Publication of EP3551829A1 publication Critical patent/EP3551829A1/de
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    • 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
    • E21B12/00—Accessories for drilling tools
    • E21B12/06—Mechanical cleaning devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B1/00—Cleaning by methods involving the use of tools
    • B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
    • B08B1/16—Rigid blades, e.g. scrapers; Flexible blades, e.g. wipers
    • B08B1/165—Scrapers

Definitions

  • the present invention relates to the field of cleaning a drilling machine auger, such a machine being generally used for making piles in soil.
  • an auger is a drilling tool formed of a helical blade which is generally wound around a tubular axial rod.
  • the auger is screwed into the ground to the desired depth. Concrete under pressure is then injected by the axial rod under the auger, which has the effect of gradually moving the auger upwards.
  • This operation thus has the advantage of simultaneously carrying out the concreting of the pile, of avoiding the collapse of the walls of the borehole during the extraction of the auger, and of reducing the traction force necessary to extract the auger.
  • the extraction of the auger is generally carried out without rotation of the latter, in order to avoid creating defects in the pile to be produced.
  • certain extractions are accompanied by a rotation of the auger, for example in the context of the manufacture of lug piles.
  • the cuttings are raised between the turns of the auger where they very often remain stuck, even after their exit outside the borehole.
  • Drilling machines are known fitted with cleaning devices making it possible to remove the cuttings lodged between the turns of the auger.
  • some include a rotating doctor blade that fits between two adjacent turns of the auger, the doctor blade rotating around the auger during the ascent, without rotation, of the latter.
  • Such a drilling machine is described in particular in the documents FR 2563861 or EP2749729 .
  • the scraper blade is mounted on a member rotating at the desired speed around the auger, said member being supported by a frame capable of sliding from top to bottom and from bottom to top along the carrying mast from which the post is suspended. auger.
  • This sliding of the frame takes place in the event of a lack of synchronism between the rotational speed of the scraper blade and the vertical extraction speed of the auger.
  • This lack of synchronism has the effect of moving the scraper blade, and therefore the frame, in translation along the mast.
  • the frame will move towards the upper end of the mast, while, conversely, if the auger extraction speed decreases, the frame will move to the lower end of the mast.
  • upper and lower stops are provided to prevent the sliding frame from being taken by the auger to either the upper and lower ends of the mast.
  • An aim of the present invention is to remedy these drawbacks.
  • the invention achieves its object by the fact that the drilling machine further comprises a measuring member for determining the movement of the carriage along the mast relative to an initial position of said carriage, and the cleaning device further comprises a device speed regulator to regulate the speed of rotation of the doctor blade as a function of said carriage movement.
  • Regulating the speed of rotation of the doctor blade corrects the vertical position of the carriage. This speed regulation is preferably carried out in real time so as to maintain the carriage in a predetermined vertical position, for example the initial position of the carriage, or at the very least in an area defined between two predetermined vertical positions, for example a centered area. on the initial position of the carriage, regardless of the pile construction phase.
  • the invention makes it possible to prevent damage to the doctor blade, thanks to the control of the vertical position of the carriage, and also to avoid potentially dangerous human intervention at the level of the carriage thanks to the fact that the doctor blade can remain engaged. between the turns throughout the operations.
  • the carriage in operation of the cleaning device during a concreting phase, the carriage is in the initial position, and the auger is extracted from the ground at a predetermined initial vertical extraction speed and constant.
  • the doctor blade has a determined rotational speed such that the doctor blade makes one complete revolution around the auger when the latter has advanced one pitch of the helical blade. Under these conditions, the carriage does not move.
  • the speed of extraction of the auger is not necessarily constant.
  • the movement of the carriage towards the lower end is determined by the measuring member and the speed of rotation of the doctor blade is regulated as a function of this movement of the carriage.
  • the speed of rotation of the doctor blade is reduced, for example so as to stop or at the very least slow down the vertical movement of the carriage towards the lower end of the mast.
  • the movement of the carriage is determined by the measuring member and the speed of rotation of the doctor blade is regulated as a function of the movement of the carriage.
  • the speed of rotation of the doctor blade is increased, for example so as to stop or slow down the vertical movement of the carriage towards the upper end of the mast. Thanks to this speed regulation, it is possible to prevent the carriage from reaching the upper end of the mast or any upper stopper, which could cause damage to the doctor blade.
  • the measuring member is configured to measure the movement of the carriage relative to its initial position, or at the very least to detect a movement of the carriage towards the end. upper end or lower end of the mast.
  • the speed regulating device is configured to modify the speed of rotation of the doctor blade as a function of the movement of the carriage relative to the initial position, so as to bring the carriage back to the initial position during a movement of the carriage relative to the initial position.
  • the speed regulating device is configured to modify the speed of rotation of the doctor blade as a function of the movement of the carriage relative to the initial position, so as to bring the carriage back to a zone situated around the initial position during a movement of the carriage out of said zone.
  • the speed regulation device therefore makes it possible to maintain the carriage substantially in its initial position, whatever the variations, positive or negative, of the vertical extraction speed of the auger. This ensures that the carriage always remains away from any lower and upper stops.
  • the speed regulating device is configured to increase the speed of rotation of the doctor blade when the trolley moves to an upper end of the mast. It is understood that, depending on its amplitude, the increase in the speed of rotation of the doctor blade has the effect of slowing down or stopping the movement of the carriage towards the upper end, or even of driving the carriage towards the lower end of the mast if the speed of rotation of the doctor blade is greater than the ratio of extraction speed to pitch of the helical blade.
  • This increase in the speed of rotation of the doctor blade is preferably initiated when the movement of the carriage, as determined by the measuring member, is greater than a first predetermined threshold.
  • the speed regulation device is configured to reduce the speed of rotation of the doctor blade when the carriage moves towards a lower end of the mast. It is understood that, depending on its amplitude, the reduction in the speed of rotation of the doctor blade has the effect of slowing down or stopping the movement of the carriage towards the lower end of the mast, or even of moving the carriage towards the upper end of the mast if the speed of rotation of the doctor blade is less than the ratio of extraction speed to pitch of the helical blade.
  • This reduction in the speed of rotation of the doctor blade can be initiated when the movement of the carriage, as determined by the measuring member, is greater than a second predetermined threshold.
  • the speed regulating device is configured so that the value of the speed of rotation of the doctor blade is a function of the value of the displacement of the carriage determined by the measuring member.
  • the speed of rotation of the doctor blade is an increasing function of the value of displacement of the carriage, considered from the initial position towards the upper end of the mast.
  • the speed of rotation of the doctor blade increases more and more as the carriage approaches the upper end of the mast.
  • the speed of rotation of the doctor blade decreases more and more as the carriage approaches the lower end of the mast.
  • the speed control device is configured such that the speed of rotation of the doctor blade is a linearly increasing function of the movement of the carriage along the mast.
  • said measuring member is arranged between the carriage and the mast.
  • the measuring member comprises at least one jack arranged between the body and the mast, the movement of the carriage being determined from the variation in length of the jack.
  • the measuring member comprises a displacement sensor integrated into the jack.
  • the jack is a hydraulic jack.
  • the doctor blade which generally bears on the lower coil, is subjected to significant forces liable to seriously damage it.
  • the cleaning device further comprises a force regulating device for regulating the force applied by the doctor blade on the lower turn.
  • the force regulating device is configured to exert on the carriage a lifting force counteracting at least in part the weight of the carriage, so as to reduce the force exerted by the doctor blade on the lower coil while ensuring that the doctor blade remains in contact with the lower coil.
  • the modulus of the lifting force is equal to a fraction of the weight of the carriage.
  • the force regulation device is arranged between the carriage and the mast.
  • the force regulating device comprises at least one actuator arranged between the body and the mast, the actuator being configured to exert a thrust force on the body, said thrust force being directed in the longitudinal direction of the mast, towards an upper end of the mast.
  • the actuator comprises a hydraulic cylinder.
  • the hydraulic cylinder is supplied at a constant hydraulic fluid pressure.
  • the measuring member comprises the hydraulic cylinder of the actuator.
  • the hydraulic cylinder arranged between the mast and the carriage has an advantageous dual function, namely to determine the displacement of the carriage and to reduce the force exerted by the doctor blade on the lower turn of the helical blade of the auger.
  • the drilling machine 10 is intended for drilling, and in particular piles in the ground. As this type of auger drilling machine is already known elsewhere, only the elements necessary for understanding the invention will be described here.
  • the drilling machine 10 comprises a mast 12 which has a longitudinal direction L ; in this example, the longitudinal direction L is vertical.
  • the drilling machine 10 also comprises an auger 14 having a longitudinal axis A parallel to the longitudinal direction L.
  • the auger 14 comprises a hollow tube 16 which extends along the longitudinal axis A, this tube being fixed to and surrounded by a helical blade 18.
  • auger For the sake of readability, only a portion of the auger is shown in figures 1 to 4 .
  • the auger can be composed of several portions fixed end to end.
  • the helical blade has an outer diameter D.
  • the drilling machine 10 also comprises a displacement device (not illustrated here) for moving the auger 14 relative to the mast 12 in translation in the longitudinal direction L.
  • This displacement device is in particular actuated during the drilling step and to screw the auger into the ground, and during the step of extracting the auger from the ground.
  • the extraction of the auger from the ground which takes place after the drilling operation, consists of a vertical translation without rotation.
  • the drilling machine 10 also comprises a device 20 for cleaning the auger 14 , the function of which is to evacuate the cuttings lodged between the turns of the helical blade when extracting the auger.
  • the cleaning device 20 comprises a carriage 22 which has the general shape of a drum traversed axially by the auger 14.
  • the carriage 22 therefore has a diameter slightly larger than the diameter D of the helical blade 18.
  • the carriage 22 is mounted on the mast 12 in a sliding manner in the longitudinal direction L of the mast 12. To do this, in this non-limiting example, the carriage is mounted on slides fixed along the mast.
  • the carriage comprises a body 24 of cylindrical shape which surrounds the auger.
  • the body 24 is supported by a pair of hydraulic jacks 30 arranged between the mast and the carriage.
  • the cleaning device 20 further comprises a doctor blade 40 which is disposed below the body 24.
  • the doctor blade is mounted on an internal drum 26 of the cleaning device 20, the internal drum 26 being disposed coaxially inside the body 24.
  • the doctor blade extends between a lower turn 18a and an upper turn 18b of the helical blade 18 in order to remove the cuttings located between the two turns.
  • the doctor blade remains engaged between the two turns during the other movements of the auger, in particular during the drilling phases.
  • the doctor blade has the shape of a plate having a height H substantially equal to the axial distance between the lower turn 18a and the upper turn 18b.
  • the cleaning device 20 also comprises a motor 28 for rotating the inner drum 26 with the doctor blade 24 around the longitudinal axis A.
  • the doctor blade rotates around the axis of rotation A of the auger while extending between the lower coil 18a and the upper coil 18b, which makes it possible to evacuate the cuttings lodged between the lower coil and the upper coil. .
  • the doctor blade 40 is preferably mounted on the drum 26 in a pivoting manner so as to be able to release the doctor blade outside the volume of the auger when the auger is screwed into the ground during the drilling operation.
  • FIG. 1 On the figures 1 to 3 , there is shown a vertical Z axis which extends parallel to the longitudinal direction L of the mast and which is oriented towards an upper end 12a of the mast.
  • Reference Z 0 corresponds to the initial position of carriage 22 illustrated in figure 1 .
  • the auger is in the extraction phase without rotation, so that the vertical movement speed of the auger corresponds to the vertical extraction speed.
  • the initial speed of rotation ⁇ 0 of the doctor blade 40 around the axis of rotation A is set to be equal to V 0 / p where p is the pitch of the helical blade 18, so that the carriage does not does not move vertically when the extraction speed without auger rotation is equal to V 0 .
  • the carriage 22 will be driven by the auger in the longitudinal direction L, ie towards the upper end 12a of the mast 12 if the extraction speed of the auger V 1 is greater than the initial speed V 0 , as illustrated in figure 2 , or towards the lower end 12b of the mast 12 if the vertical extraction speed V 2 the auger is lower than the speed V 0 , as illustrated in figure 3 .
  • the drilling machine 10 further comprises a measuring member 50 for determining a displacement ⁇ Z of the carriage 22 along the mast with respect to the initial position Z 0 of the carriage.
  • ⁇ Z Z - Z 0
  • the measuring member 50 is disposed between the carriage 22 and the mast 12. It comprises the hydraulic cylinder 30, so that the movement of the carriage 22 is determined from the variation in the length. cylinder 30.
  • the jack 30 comprises a displacement sensor 52 which makes it possible to measure the value of the displacement of the carriage 22.
  • the cleaning device 20 further comprises a speed regulating device 54, shown diagrammatically in figure 4 to regulate the speed of rotation ⁇ of the doctor blade 40 as a function of the displacement ⁇ Z of the carriage determined by the measuring member.
  • the speed regulation device 54 is connected to the displacement sensor 52, and controls the motor 28 by supplying it with a speed setpoint ⁇ of the doctor blade.
  • the speed regulating device 54 is configured to modify the speed of rotation ⁇ of the doctor blade 40 as a function of the movement ⁇ Z of the carriage, so as to bring the carriage 22 back to the initial position Z 0 when a movement of the carriage relative to the initial position Z 0 .
  • the speed regulator 54 is configured to increase the speed of rotation ⁇ of the doctor blade 40 when the carriage 22 moves towards the upper end 12a of the mast 12.
  • the measuring device 50 has determined that the carriage 22 has moved by the distance ⁇ Z 1 towards the upper end 12a of the mast 12. Consequently, the speed regulating device 54 sends the speed setpoint ⁇ 1 to the motor 28 in order to increase the speed of rotation of the doctor blade 40.
  • the speed of rotation ⁇ 1 is strictly greater than the speed of rotation ⁇ 0 initial. We will explain below how the speed ⁇ 1 is determined .
  • the speed regulation device 54 is configured to decrease the speed of rotation ⁇ of the doctor blade 40 when the carriage moves towards the lower end 12b of the mast 12.
  • the measuring member 50 has determined that the carriage 22 has moved a distance ⁇ Z 2 from the initial position Z 0 towards the lower end 12b of the mast 12. Consequently, the speed regulating device 54 decreases the speed of rotation ⁇ of the doctor blade 40 to bring it to the speed of rotation ⁇ 2 lower than the speed of rotation ⁇ 0 initial.
  • the speed regulating device 54 is configured such that the speed of rotation ⁇ is a linear increasing function of the displacement ⁇ Z of the carriage along the mast.
  • the variation in speed of rotation ⁇ of the doctor blade 40 as a function of the position Z of the carriage 22 relative to its initial position Z 0 .
  • ⁇ ⁇ 0 + ⁇
  • the curve illustrated in figure 5 is an increasing linear function representing the speed variation as a function of the vertical displacement of the carriage with respect to Z 0 .
  • ⁇ k ⁇ (Z-Zo), where k is the coefficient of proportionality.
  • the pitch p of the blade is generally between 0.3 and 2 meters, and the ascent speed of the auger can vary between 50 and 200 meters per hour.
  • values of k make it possible to ensure that the speed of rotation of the doctor blade is adapted to stop the movement of the carriage 22 from its initial position Z 0 .
  • Other values of k may be chosen as a function of the pitch of the blade.
  • the device can also be configured so that the speed ⁇ 1 is sufficient to bring the carriage 22 back to the initial position Z 0 , this movement being illustrated by the arrow F1 of the figure 2 .
  • the variation in speed of rotation ⁇ 1 will be determined by choosing a coefficient k higher than those proposed above. It will be understood in particular that the carriage will return to its initial position if the extraction speed without rotation fluctuates around the value V 0 .
  • variation in speed of rotation ⁇ 2 can be calibrated so that the carriage 22 returns to its initial position Z 0 in the event of displacement of the carriage 22 towards the lower end 12b of the mast 12, this movement of the carriage being illustrated by arrow F2 on the figure 3 .
  • the doctor blade 40 is supported on the lower turn 18a of the helical blade 18.
  • the force exerted by the doctor blade 40 on the lower turn 18a is formed by the self-weight of the carriage.
  • the cleaning device further comprises a force regulating device 60, shown diagrammatically in figure 1 to regulate the force applied by the doctor blade 40 on the lower turn 18a.
  • This force regulation device 60 comprises the hydraulic cylinder 30 arranged between the carriage 22 and the mast 12.
  • the jack 30 therefore constitutes an actuator 31 which is arranged between the body and the mast, being configured to exert a thrust force T on the body 24.
  • This thrust force being, in this example, equal to a fraction of the weight of the carriage, in this case 50% of the weight of the carriage 22.
  • the thrust force T is directed in the longitudinal direction L of the mast towards the upper end of the mast 12.
  • this thrust force T makes it possible to reduce the vertical pressure force exerted by the doctor blade 40 on the lower turn 18a.
  • the hydraulic cylinder 30 is supplied at a constant hydraulic fluid pressure.
  • the measuring member 50 comprises the hydraulic cylinder 30 of the actuator 31.
  • the speed regulating device 54 is also able to regulate the speed of rotation of the doctor blade 40 during a phase of vertical extraction of the auger 14 with rotation, which whatever its direction of rotation.
  • the doctor blade speed control device 40 is also able to regulate the doctor blade speed during the drilling phase, that is to say during a downward vertical movement of the auger with rotation, corresponding to a screwing movement of the auger into the ground.
  • the regulating device is also able to regulate the speed of rotation of the doctor blade 40 during a rotation of the auger, without vertical displacement of the latter, in order to correct a displacement of the carriage 22 which could result from a variation of the auger. auger rotation speed 14.

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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)

Claims (13)

  1. Bohrmaschine (10), umfassend:
    einen Mast (12), der eine Längsrichtung (L) aufweist,
    eine Schnecke (14), die eine Längsachse (A) parallel zur Längsrichtung (L) aufweist und die eine schneckenförmige Schaufel umfasst,
    eine Verschiebungsvorrichtung zum Verschieben der Schnecke (14) in Bezug auf den Mast (12) entlang der Längsrichtung (L),
    eine Vorrichtung zum Reinigen (20) der Schnecke (14), umfassend einen Schlitten (22), der an dem Mast (12) verschiebbar entlang der Längsrichtung (L) des Masts (12) montiert ist, wobei der Schlitten einen Körper (24), der die Schnecke umgibt, und eine Rakel (40) beinhaltet, die an dem Körper drehbar um eine Drehachse (R) parallel zur Längsrichtung (L) montiert ist, wobei sich die Rakel zwischen einer unteren Windung (18a) und einer oberen Windung (18b) der schneckenförmigen Schaufel erstreckt,
    dadurch gekennzeichnet, dass die Bohrmaschine (10) ferner eine Messeinrichtung (50) beinhaltet, um die Verschiebung (ΔZ, ΔZ1, ΔZ2) des Schlittens (22) entlang des Masts (12) in Bezug auf eine Ausgangsposition (Z0) des Schlittens zu bestimmen, und dadurch, dass die Vorrichtung zum Reinigen (20) ferner eine Geschwindigkeitsregelvorrichtung zum Regeln der Geschwindigkeit (54) der Drehung (ω) der Rakel (40) in Abhängigkeit von der Verschiebung (ΔZ, ΔZ1, ΔZ2) des Schlittens beinhaltet.
  2. Bohrmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Geschwindigkeitsregelvorrichtung (54) dazu ausgestaltet ist, die Drehgeschwindigkeit (ω) der Rakel (40) in Abhängigkeit von der Verschiebung (ΔZ, ΔZ1, ΔZ2) des Schlittens (22) in Bezug auf die Ausgangsposition zu modifizieren, um den Schlitten während einer Verschiebung (ΔZ, ΔZ1, ΔZ2) des Schlittens (22) in Bezug auf die Ausgangsposition (Z0) in die Ausgangsposition (Z0) zurückzubringen.
  3. Bohrmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Geschwindigkeitsregelvorrichtung (54) dazu ausgestaltet ist, die Drehgeschwindigkeit (ω, ω1, ω2) der Rakel zu erhöhen, wenn sich der Schlitten zu einem oberen Ende des Masts (12) verschiebt.
  4. Bohrmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Geschwindigkeitsregelvorrichtung (54) dazu ausgestaltet ist, die Drehgeschwindigkeit der Rakel (40) zu verringern, wenn sich der Schlitten zu einem unteren Ende (12b) des Masts (12) verschiebt.
  5. Bohrmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Geschwindigkeitsregelvorrichtung (54) derart ausgestaltet ist, dass die Drehgeschwindigkeit (ω) einer steigenden linearen Funktion (f) der Verschiebung (ΔZ) des Schlittens entlang des Masts in Bezug auf die Ausgangsposition (Z0) entspricht.
  6. Bohrmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Messeinrichtung zwischen dem Schlitten (22) und dem Mast (12) angeordnet ist.
  7. Bohrmaschine nach Anspruch 6, dadurch gekennzeichnet, dass die Messeinrichtung (50) mindestens einen Zylinder (30) beinhaltet, der zwischen dem Körper und dem Mast angeordnet ist, wobei die Verschiebung des Schlittens (22) durch die Längenänderung des Zylinders (30) bestimmt wird.
  8. Bohrmaschine nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Rakel (40) auf die untere Windung (18a) stützt, und dadurch, dass die Vorrichtung zum Reinigen ferner eine Kraftregelvorrichtung (60) zum Regeln der Kraft, die von der Rakel (40) auf die untere Windung (18a) angewendet wird, beinhaltet.
  9. Bohrmaschine nach Anspruch 8, dadurch gekennzeichnet, dass die Kraftregelvorrichtung (60) zwischen dem Schlitten und dem Mast angeordnet ist.
  10. Bohrmaschine nach Anspruch 9, dadurch gekennzeichnet, dass die Kraftregelvorrichtung mindestens ein Betätigungselement (31) beinhaltet, das zwischen dem Körper und dem Mast angeordnet ist, wobei das Betätigungselement dazu ausgestaltet ist, eine Schubkraft (T) auf den Körper (24) auszuüben, wobei die Schubkraft (T) entlang der Längsrichtung (L) des Masts zu einem oberen Ende des Masts (12) gerichtet ist.
  11. Bohrmaschine nach Anspruch 10, dadurch gekennzeichnet, dass das Betätigungselement (31) einen Hydraulikzylinder beinhaltet.
  12. Bohrmaschine nach Anspruch 11, dadurch gekennzeichnet, dass der Hydraulikzylinder (30) mit einem konstanten Hydraulikfluiddruck versorgt wird.
  13. Bohrmaschine nach einem der Ansprüche 11 und 12, dadurch gekennzeichnet, dass die Messeinrichtung (50) den Hydraulikzylinder (30) des Betätigungselements (31) beinhaltet.
EP17822403.6A 2016-12-12 2017-12-12 Bohrmaschine mit einer schnecke und vorrichtung zum reinigen der schnecke Active EP3551829B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1662315A FR3060048B1 (fr) 2016-12-12 2016-12-12 Machine de forage comprenant une tariere et un dispositif de nettoyage de la tariere
PCT/FR2017/053511 WO2018109356A1 (fr) 2016-12-12 2017-12-12 Machine de forage comprenant une tariere et un dispositif de nettoyage de la tariere

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Publication Number Publication Date
EP3551829A1 EP3551829A1 (de) 2019-10-16
EP3551829B1 true EP3551829B1 (de) 2020-10-28

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EP (1) EP3551829B1 (de)
ES (1) ES2841336T3 (de)
FR (1) FR3060048B1 (de)
WO (1) WO2018109356A1 (de)

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Publication number Priority date Publication date Assignee Title
CN113944433B (zh) * 2021-10-29 2022-12-16 中国一冶集团有限公司 一种钻杆刮泥装置及使用方法
CN114151019B (zh) * 2021-11-24 2024-03-29 深圳市工勘岩土集团有限公司 旋挖钻斗顶推式出渣降噪结构
CN117489263B (zh) * 2023-10-10 2024-05-14 浙江恒悦机械有限公司 一种建筑地基用地钻及其使用方法

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FR2563861B1 (fr) 1984-05-03 1986-08-29 Soletanche Dispositif de nettoyage de tarieres.
DE69002583T2 (de) * 1989-11-10 1993-11-25 Dawson Const Plant Ltd Reiniger für Schneckenbohrer.
ITUD20020117A1 (it) * 2002-05-30 2003-12-01 Casagrande Spa Dispositivo di pulizia per utensili ad elica e procedimento di pulizia di un utensile ad elica adottante tale dispositivo
GB2414998B (en) * 2004-06-10 2008-04-16 Cementation Found Skanska Ltd Auger cleaner
ITMI20122264A1 (it) * 2012-12-28 2014-06-29 Soilmec Spa Dispositivo pulitore elica per rimuovere detriti da un utensile di scavo a vite, macchina di scavo provvista di tale dispositivo pulitore e uso di tale macchina di scavo

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Publication number Publication date
EP3551829A1 (de) 2019-10-16
FR3060048A1 (fr) 2018-06-15
FR3060048B1 (fr) 2020-12-11
ES2841336T3 (es) 2021-07-08
WO2018109356A1 (fr) 2018-06-21

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