EP3752325B1 - Hydraulischer drehschlagbohrer mit einer permanent an einem niederdruckspeicher angeschlossenen steuerkammer - Google Patents

Hydraulischer drehschlagbohrer mit einer permanent an einem niederdruckspeicher angeschlossenen steuerkammer Download PDF

Info

Publication number
EP3752325B1
EP3752325B1 EP19705982.7A EP19705982A EP3752325B1 EP 3752325 B1 EP3752325 B1 EP 3752325B1 EP 19705982 A EP19705982 A EP 19705982A EP 3752325 B1 EP3752325 B1 EP 3752325B1
Authority
EP
European Patent Office
Prior art keywords
piston
control chamber
stop piston
stop
pressure fluid
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.)
Active
Application number
EP19705982.7A
Other languages
English (en)
French (fr)
Other versions
EP3752325A1 (de
Inventor
Jean-Sylvain Comarmond
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Montabert SAS
Original Assignee
Montabert SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Montabert SAS filed Critical Montabert SAS
Publication of EP3752325A1 publication Critical patent/EP3752325A1/de
Application granted granted Critical
Publication of EP3752325B1 publication Critical patent/EP3752325B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/24—Damping the reaction force
    • B25D17/245—Damping the reaction force using a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
    • 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
    • E21B6/00—Drives for drilling with combined rotary and percussive action
    • E21B6/02—Drives for drilling with combined rotary and percussive action the rotation being continuous
    • E21B6/04—Separate drives for percussion and rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/002—Pressure accumulators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0019—Guide-sleeves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0023—Pistons

Definitions

  • the present invention relates to a rotapercutant hydraulic drill more specifically used on a drilling rig.
  • a drilling rig comprises, in a known manner, a roto-percussive hydraulic drill mounted sliding on a slide and driving one or more drill bars, the last of these drill bars carrying a tool called a cutting tool which comes into contact with the rock.
  • a perforator generally aims to drill more or less deep holes in order to be able to place explosive charges there.
  • the perforator is therefore the main element of a drilling installation which, on the one hand, gives the cutting edge rotation and percussion via the drill bars so as to penetrate the rock, and on the other hand, provides an injection fluid so as to extract the debris from the drilled hole.
  • a roto-percussive hydraulic perforator comprises more particularly on the one hand a striking system which is driven by one or more flow rates of hydraulic fluid coming from a main hydraulic supply circuit and which comprises a striking piston configured to strike, each operating cycle of the drill, a fitting coupled to the drill bars, and on the other hand a rotation system provided with a hydraulic rotary motor and configured to rotate the fitting and the drill bars.
  • the force of support of the roto-percussive hydraulic perforator on the drill bars, and therefore of the cutter on the rock, is generated by the slide, thanks to a cable or a drive chain moved by a hydraulic cylinder or a hydraulic motor. More precisely, the bearing force is transmitted from the body of the perforator to the fitting via an abutment element incorporated in the body of the perforator.
  • This stop element can consist, for powerful perforators, of a stop piston, at least one surface of which is hydraulically supplied so as to ensure transmission of the bearing force by means of a fluid.
  • WO2010/082871 discloses a roto-percussive hydraulic drill according to the preamble of claim 1, in which, under operating conditions of the striking system, the stop piston is positioned in an equilibrium position, conforming to a stroke desired impact of the impact piston, via a hydraulic control chamber delimited by the impact piston and the body of the perforator and permanently connected to a high-pressure fluid supply conduit, the hydraulic control being configured on the one hand to urge the stopper piston forwards and on the other hand to be connected to a low-pressure fluid return conduit when the rear face of the stopper piston is located at a predetermined distance of the rear wall of the cavity receiving the stop piston.
  • the present invention aims to remedy all or part of these drawbacks.
  • the technical problem underlying the invention therefore consists in providing a hydraulic drill which is of simple and economical structure, while having improved performance.
  • Such a configuration of the second control chamber makes it possible, due to the permanent connection of the latter with the low pressure accumulator, to ensure a high speed movement of the stop piston forwards when the rock gives way under the impact of the impact piston and that the fitting is suddenly free to move forward. This makes it possible to quickly restore a normal bearing force of the tool of the drill bar on the rock, and this despite the movements due to the penetration of the drill bar into the ground and the various vibrations of the body of the perforator.
  • the particular configuration of the first control chamber and of the connecting channel makes it possible to position the stop piston hydraulically in an approximately stable equilibrium position corresponding to an optimal striking stroke of the striking piston.
  • the particular configuration of the roto-percussion hydraulic perforator according to the present invention gives it improved performance compared to the roto-percussion hydraulic perforators of the prior art.
  • the hydraulic drill may additionally have one or more of the following characteristics, taken alone or in combination.
  • the low pressure accumulator is a membrane accumulator, such as a hydropneumatic accumulator.
  • the membrane accumulator advantageously comprises a flexible membrane, a first face of which is subjected to the pressure of a volume of compressible gas contained in the membrane accumulator and the second face of which is subjected to the pressure of the low-pressure fluid coming from the low pressure fluid return line.
  • the second control chamber is connected to the low pressure accumulator by a return channel.
  • the stop piston comprises a first annular control surface extending transversely to the displacement axis and delimiting at least in part the first control chamber and a second annular control surface s 'extending transversely to the axis of movement and delimiting at least in part the second control chamber, the second annular control surface having a surface greater than the surface of the first annular control surface.
  • the first control chamber has a cross section smaller than the cross section of the second control chamber.
  • each of the first and second annular control surfaces extends substantially perpendicular to the axis of displacement.
  • the first annular control surface is closer to the front face of the stop piston than the second annular control surface.
  • the body and the stop piston also at least partly delimit a third control chamber permanently connected to the low-pressure fluid return conduit, the third control chamber being antagonistic to the first and second control chambers.
  • the third control chamber is permanently connected to the low pressure accumulator.
  • the third control chamber is configured to urge the stop piston towards the rear, that is to say towards the rear wall of the cavity and therefore opposite the fitting.
  • the third control chamber is connected to the low-pressure fluid return conduit by a fluid communication channel provided with a calibrated orifice.
  • the return channel comprises a nozzle comprising the calibrated orifice.
  • the third control chamber has a cross section smaller than the cross section of the second control chamber.
  • the stop piston includes the connecting channel, and the connecting channel includes a first end portion opening into the third control chamber and a second end portion opposite the first end portion and opening into an outer surface of the stopper piston, the second end portion being able to be fluidically connected to the first control chamber when the rear face of the stopper piston is located at a distance from the rear wall of the cavity greater than the predetermined value.
  • the stop piston comprises the connecting channel.
  • the connecting channel comprises a first end portion opening into the first control chamber and a second end portion opposite the first end portion and opening into an outer surface of the stopper piston, the second end portion of the connecting channel being able to be fluidically connected to the low-pressure fluid return conduit when the rear face of the stopper piston is located at a distance from the rear wall of the upper cavity to the predetermined value.
  • the body comprises an annular groove opening into the cavity and permanently connected to the low-pressure fluid return conduit, the second end portion of the connecting channel being able to be fluidically connected to the annular groove when the rear face of the stop piston is located at a distance from the rear wall of the cavity greater than the predetermined value.
  • the annular groove is connected to the low pressure accumulator.
  • the rotary-percussive hydraulic drill comprises a supply channel connecting the first control chamber to the high-pressure fluid supply conduit.
  • the supply channel is provided with a calibrated orifice.
  • the supply channel comprises a nozzle comprising the calibrated orifice.
  • the stop piston is slidably mounted around the striking piston.
  • the main hydraulic supply circuit comprises a high pressure accumulator connected to the high pressure fluid supply conduit.
  • the high pressure accumulator is a membrane accumulator, such as a hydropneumatic accumulator.
  • the membrane accumulator forming the high-pressure accumulator advantageously comprises a flexible membrane, a first face of which is subjected to the pressure of a volume of compressible gas contained in the membrane accumulator and the second face of which is subjected to the pressure of the high pressure fluid from the high pressure fluid supply line.
  • the roto-percussive hydraulic perforator further comprises an annular stop member arranged between the fitting and the front face of the stop piston.
  • the annular stop member is a stop ring.
  • the roto-percussive hydraulic drill comprises a thrust bearing arranged between the rear face of the thrust piston and the rear wall of the cavity.
  • the thrust bearing can for example be a roller thrust bearing.
  • the abutment piston comprises an annular bearing surface configured to come into abutment against an annular abutment surface of the body.
  • the annular bearing surface is configured to come into abutment against the annular abutment surface of the body when the rear face of the stop piston is located at a predetermined distance from the rear wall of the cavity, the predetermined distance being greater than the predetermined value.
  • the annular bearing surface is inclined relative to the axis of movement.
  • the stop piston comprises an annular flange comprising the annular bearing surface.
  • the annular collar at least partly delimits the third control chamber.
  • the annular flange comprises the first annular control surface.
  • the body comprises a piston cylinder in which the striking piston is slidably mounted in an alternating manner, the cavity being made in the body coaxially with the piston cylinder.
  • the fitting extends longitudinally along the strike axis.
  • the fitting comprises a first end portion facing the striking piston and provided with an end face against which the striking piston is intended to strike, and a second portion end, opposite the first end portion, intended to be coupled to the at least one drill bar.
  • the high pressure fluid supply conduit is a high pressure incompressible fluid supply conduit
  • the low pressure fluid return conduit is a fluid return conduit incompressible at low pressure
  • the rotapercutant hydraulic perforator 2 comprises more particularly a body 3 comprising a piston cylinder 4.
  • the body 1 comprises a main body 3.1 partly delimiting the piston cylinder 4, as well as a front liner 3.2 and a rear liner 3.3 force-fitted in a bore 3.4 delimited by the main body 3.1.
  • the striking system of the rotapercutant hydraulic perforator 2 comprises a striking piston 5 mounted to slide alternately in the piston cylinder 4 along a striking axis A. As shown more particularly in the figure 2 , the striking piston 5 and the piston cylinder 4 delimit a primary control chamber 6 which is annular, and a secondary control chamber 7 which has a larger section than that of the primary control chamber 6 and which is antagonistic to the primary control chamber 6.
  • the striking system of the rotapercutant hydraulic perforator 2 further comprises a control valve 8 arranged to control an alternating movement of the striking piston 5 inside the piston cylinder 4 alternately following a striking stroke and a return stroke.
  • the control distributor 8 is configured to place the secondary control chamber 7, alternately in relation with a high pressure fluid supply conduit 9, such as a high pressure incompressible fluid supply conduit, during the striking stroke of the striking piston 5, and with a low-pressure fluid return conduit 11, such as a low-pressure incompressible fluid return conduit, during the return stroke of the striking piston 5.
  • the conduit high pressure fluid supply 9 and the low pressure fluid return conduit 11 belong to a main hydraulic supply circuit with which the striking system is provided.
  • the main hydraulic supply circuit can advantageously include a high pressure accumulator 12 connected to the high pressure fluid supply conduit 9.
  • the control distributor 8 is more particularly movably mounted in a bore made in the body 3 between a first position (see the figure 2 ) in which the control distributor 8 is configured to place the secondary control chamber 7 in relation to the high-pressure fluid supply conduit. pressure 9 and a second position in which the control valve 8 is configured to place the secondary control chamber 7 in relation to the low pressure fluid return conduit 11.
  • the primary control chamber 6 is advantageously permanently supplied with high-pressure fluid via a supply channel (not shown in the figures), so that each position of the control valve 8 causes the striking stroke of the strike 5, then the return stroke of strike piston 5.
  • the striking system of the rotapercutant hydraulic perforator 2 also comprises a stop piston 13 which is tubular and which is slidably mounted in a cavity 14 of the body 3 along an axis of movement parallel to the striking axis A and preferably coinciding with the striking axis A.
  • the stop piston 13 is slidably mounted around the striking piston 5, and the cavity 14 is made in the body 3 coaxially with the piston cylinder 4.
  • the rotapercutant hydraulic perforator 2 further comprises a fitting 15 intended to be coupled, in known manner, to at least one drill bar (not shown in the figures) equipped with a tool.
  • the fitting 15 extends longitudinally along the striking axis A, and comprises a first end portion 16 facing the striking piston 5 and provided with an end face 17 against which the piston is intended to strike. 5 during each operating cycle of the rotapercutant hydraulic drill 2, and a second end portion (not shown in the figures), opposite the first end portion 16, intended to be coupled to at least a drill bar.
  • the stop piston 13 comprising a front face 18 facing the fitting 15 and intended to position the fitting 15 in a predetermined position of equilibrium with respect to the striking piston 5, and a rear face 19 opposite the front face 18 and located opposite a rear wall 21 of cavity 14.
  • the body 3 and the stop piston 13 delimit, with the strike piston 5, a first control chamber 22 permanently connected to the high-pressure fluid supply conduit 9 and configured to urge the stop piston 13 towards the forward, that is to say towards the fitting 15 and therefore opposite the rear wall 21 of the cavity 14.
  • the roto-percussive hydraulic perforator 2 advantageously comprises a supply channel 23 connecting the first chamber control 22 to the high pressure fluid supply conduit 9.
  • the supply channel 23 is provided with a calibrated orifice 24, which can for example be provided on a nozzle incorporated in the supply channel 23.
  • the body 3 and the stop piston 13 delimit, with the striking piston 5, also a second control chamber 25 connected to a low pressure accumulator 26 which belongs to the main hydraulic supply circuit of the striking system and which is connected to the low-pressure fluid return conduit 11.
  • the second control chamber 25 is, like the first control chamber 22, also configured to urge the stop piston 13 forwards.
  • the roto-percussive hydraulic perforator 2 comprises a return channel 27 connecting the second control chamber 25 to the low pressure accumulator 26.
  • the stop piston 13 comprises a first annular control surface 28, also called first annular active surface, extending perpendicularly to the axis of movement and partly delimiting the first control chamber 22, and a second annular control surface 29, also called the second annular active surface, extending perpendicularly to the axis of movement and partly delimiting the second control chamber 25.
  • the second annular control surface 29 advantageously has a surface greater than the surface of the first surface of annular control 28.
  • the second control chamber 25 advantageously has a cross section greater than the cross section of the first control chamber 22.
  • the body 3 and the stop piston 15 also delimit a third control chamber 31 permanently connected to the low-pressure fluid return conduit 11, via a fluid communication channel 32 opening into the third control chamber.
  • control 31 and the return channel 27 which connects the fluidic communication channel 32 to the low-pressure fluid return conduit 11.
  • the third control chamber 31 is antagonistic to the first and second control chambers 22, 25, and is thus configured to urge the stop piston 13 rearward.
  • the second control chamber 25 is sized to have an active surface on the stop piston 13 that is much greater than the active surface of the third control chamber 31.
  • the second and third control chambers 25, 31 being connected to the channel return 27 and to the low pressure accumulator 26, the calculation of the difference of the two active surfaces of the second and third control chambers 25, 31 gives a resulting active surface pushing the stop piston 13 forwards and subjected to the pressure of the low pressure accumulator 26.
  • Rotary-percussive hydraulic drill 2 further comprises a connecting channel 33 configured to fluidically connect the first control chamber 22 to the low-pressure fluid return conduit 11 when the rear face 19 of the stop piston 13 is located at a distance of the rear wall 21 of the cavity 14 which is greater than a predetermined value.
  • the stop piston 13 includes the connecting channel 33
  • the connecting channel 33 includes a first end portion 33.1 opening into the first control chamber 22 and a second end portion 33.2 opposite the first portion of end 33.1 and opening into an outer surface of the stop piston 13.
  • the second end portion 33.2 of the connecting channel 33 is adapted to be fluidically connected to an annular groove 34, which opens into the cavity 14 and which is connected permanently to the low-pressure fluid return conduit 11, when the rear face 19 of the stop piston 13 is located at a distance from the rear wall 21 of the cavity 14 which is greater than the predetermined value.
  • the calibrated orifice 24 is advantageously of very small size by ra pport to the connecting channel 33 and to the return channel 27 so that the pressure which is established in the first control chamber 22 drops very rapidly when the connecting channel 33 opens in the annular groove 34.
  • the flow which passes through the calibrated orifice 24 must preferably remain low because it is taken from the high-pressure fluid supply conduit 9.
  • the flow rate of fluid supplying the first control chamber 22 is low, and therefore the speed of movement of the stop piston 13, resulting from this flow rate of fluid, is also low.
  • the second control chamber 25 is freely supplied by the low pressure accumulator 26, and will make it possible to push the stop piston 13 forwards and at high speed, for example when the rock yields under the impact of the striking piston 5 and the fitting 15 is suddenly free to move forward.
  • the roto-percussion hydraulic drill 2 also comprises a rotation system comprising a hydraulic motor 35 driving a motor pinion 36 and a driven pinion 37, so as to ensure a rotational movement of the fitting 15.
  • the hydraulic motor 35 is advantageously powered hydraulically by an external hydraulic supply circuit.
  • the fitting 15 When the roto-percussive hydraulic drill 2 is in operation, the fitting 15 is set in rotation thanks to the hydraulic motor 35, and the fitting 15 receives on its end face 17 the cyclic shocks of the striking piston 5, ensured by the striking system supplied by the main hydraulic supply circuit.
  • the carrier machine on which the rotary-percussion hydraulic drill 2 is mounted applies a thrust force on the drill bar, via the body 3 of the rotary-percussion hydraulic drill 2 and the fitting 15. Inside of the perforator, between the body 3 and the fitting 15, this force is transmitted via the abutment piston 13 and a stop member 38, such as a stop ring, arranged between the fitting 15 and the front face 18 of the stop piston 13.
  • the positioning of the stop piston 13 is thus purely hydraulic and is arranged so that the striking stroke C of the striking piston 5 is respected.
  • the stop piston 13 further comprises an annular bearing surface 39 configured to come into abutment against an annular stop surface 41 of the body 3, so as to limit the stroke of movement of the stop piston 13 forwards, c that is to say towards the fitting 15.
  • the annular bearing surface 39 is configured to come into abutment against the annular abutment surface 41 of the body 3 when the rear face 19 of the abutment piston 13 is located at a predetermined distance from the rear wall 21 of the cavity 14, the predetermined distance being greater than the predetermined value.
  • the annular bearing surface 39 is inclined with respect to the axis of movement, and partly delimits the third control chamber 31.
  • the picture 3 shows a second embodiment of the rotary-percussion hydraulic drill 2 which differs from the first embodiment essentially in that the fluidic communication channel 32 is provided with a calibrated orifice 42, which can for example be provided on a nozzle incorporated in the fluid communication 32, and in that the first end portion 33.1 of the connecting channel 33 opens into the third control chamber 31 and the second end portion 33.2 of the connecting channel 33 opens into an outer surface of the stop piston 13, the second end portion 33.2 of the connecting channel 33 being adapted to be fluidically connected to the first control chamber 22 when the rear face 19 of the stop piston 13 is located at a distance from the rear wall 21 of the cavity 14 which is greater than the predetermined value.
  • the first control chamber 22 When the roto-percussive hydraulic drill 2 according to the second embodiment of the invention is in operation, the first control chamber 22 is subjected to high pressure, the stop piston 13 moves forward until that the second end portion 33.2 of the connecting channel 33 opens into the first control chamber 22.
  • the high-pressure oil then flows into the third control chamber 31 whose connection with the return channel 27 is throttled by the calibrated orifice 42.
  • the first and third control chambers 22, 31 then take fairly close pressures, which reduces or cancels the forward thrust of the stop piston 13. Consequently, the stop piston 13 will find a stable operating position around this position of the second end portion 33.2 of the connecting channel 33.
  • the second control chamber 25 is freely supplied by the low pressure accumulator 26, and will make it possible to push the stop piston 13 forwards and at high speed, for example when the rock yields under the impact of the impact piston 5. This makes it possible to quickly return to a normal pressing force of the drill bar tool on the rock, despite the movements due to the penetration of the drill bar drilling in the ground and the various vibrations of the body 3 of the perforator, while ensuring, thanks to the first and third control chambers 22, 31, an average position of the stop piston 13 which respects the planned striking stroke C of the striking piston 5.
  • the stop piston 13 comprises an annular flange 43, also called annular shoulder, which comprises the annular bearing surface 39 and the first annular control surface 28.
  • annular flange 43 advantageously partly delimits the first control chamber 22 and partly the third control chamber 31.
  • the supply channel 23 advantageously has no calibrated orifice, or any other specific throttle element.
  • the figure 4 shows a third embodiment of rotary-percussion hydraulic drill 2 which differs from the first embodiment essentially in that the rotary-percussion hydraulic drill 2 comprises a thrust bearing 44, such as a roller thrust bearing, disposed between the face rear 19 of the stop piston 13 and the rear wall 21 of the cavity 14.
  • a thrust bearing 44 such as a roller thrust bearing
  • the fitting 15 is in rotation as well as the stop member 38 and the stop piston 13. Since the positioning of the stop piston 13 in the predetermined equilibrium position is only done when the striking system is in operation (thus providing the necessary fluid in the first, second and third control chambers 22, 25 , 31), then the stop piston 13 is pressed, by the reaction force of the ground, against not the rear wall 21 of the cavity 14 (which could induce a rotary friction of the stop piston 13 against the body 3 and therefore generate damage to various component parts of the perforator), but against the thrust bearing 44 (which greatly limits the wear of the roto-percussive hydraulic perforator 2, and this without addition of external fluid at the level of the thrust piston 13) .

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Automation & Control Theory (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Claims (15)

  1. Hydraulischer Drehschlagbohrer (2), umfassend:
    - einen Körper (3),
    - einen Schaft (15), der zum Koppeln mit mindestens einer Bohrstange, die mit einem Werkzeug ausgestattet ist, bestimmt ist,
    - einen Schlagkolben (5), der einer Schlagachse (A) folgend gleitend im Inneren des Körpers (3) gelagert und zum Schlagen des Schafts (15) konfiguriert ist,
    - ein Anschlagkolben (13), der gleitend in einem Hohlraum (14) des Körpers (3) entlang einer zur Schlagachse (A) im Wesentlichen parallelen Verschiebungsachse gelagert ist, wobei der Anschlagkolben (13) eine Vorderseite (18), die sich in Richtung des Schafts (15) dreht und bestimmt ist, den Schaft (15) in einer Gleichgewichtsposition, die im Verhältnis zur Schlagachse (5) vorbestimmt ist, zu positionieren, und eine Rückseite (19), die der Vorderseite (18) gegenüberliegt und sich gegenüber einer Rückwand (21) des Hohlraums (14) befindet, aufweist, und
    - einen hydraulischen Hauptversorgungskreislauf, der konfiguriert ist, um ein alternierendes Gleiten des Schlagkolbens (5) entlang der Schlagachse (A) zu steuern und um das Gleiten des Anschlagkolbens (13) entlang der Verschiebungsachse zu steuern, wobei der hydraulische Hauptversorgungskreislauf eine Hochdruckfluid-Versorgungsleitung (9) und eine Niederdruckfluid-Rückführleitung (11) umfasst,
    wobei der Körper (3) und der Anschlagkolben (13) zumindest teilweise eine erste Steuerkammer (22) begrenzen, die permanent mit der Hochdruckfluid-Versorgungsleitung (9) verbunden und konfiguriert ist, um den Anschlagkolben (13) nach vorn zu drängen, der hydraulische Drehschlagbohrer (2) ferner einen Verbindungskanal (33) umfasst, der konfiguriert ist, um die erste Steuerkammer (22) mit der Niederdruckfluid-Rückführleitung (11) fluidisch zu verbinden, wenn die Rückseite (19) des Anschlagkolbens (13) sich in einem Abstand von der Rückwand (21) des Hohlraums (14), der größer als ein vorgegebener Wert ist, befindet,
    dadurch gekennzeichnet, dass der hydraulische Hauptversorgungskreislauf ferner einen Niederdruck-Akkumulator (26) umfasst, der mit der Niederdruckfluid-Rückführleitung (11) verbunden ist, und dadurch, dass der Körper (3) und der Anschlagkolben (13) ferner zumindest teilweise eine zweite Steuerkammer (25) begrenzen, die permanent mit dem Niederdruck-Akkumulator (26) verbunden und konfiguriert ist, um den Anschlagkolben (13) nach vorn zu drängen.
  2. Hydraulischer Drehschlagbohrer (2) nach Anspruch 1, wobei der Anschlagkolben (13) eine erste ringförmige Steuerfläche (28), der sich quer zur Verschiebungsachse erstreckt und die erste Steuerkammer (22) zumindest teilweise begrenzt, und eine zweite ringförmige Steuerfläche (29), die sich quer zur Verschiebungsachse erstreckt und die zweite Steuerkammer (25) zumindest teilweise begrenzt, aufweist, wobei die zweite ringförmige Steuerfläche (29) eine Fläche aufweist, die größer als die Fläche der ersten ringförmigen Steuerfläche (28) ist.
  3. Hydraulischer Drehschlagbohrer (2) nach Anspruch 1 oder 2, wobei der Körper (3) und der Anschlagkolben (13) ferner zumindest teilweise eine dritte Steuerkammer (31) begrenzen, die permanent mit der Niederdruckfluid-Rückführleitung (11) verbunden ist, wobei die dritte Steuerkammer (31) der ersten und zweiten Steuerkammer (22, 25) entgegengesetzt liegt.
  4. Hydraulischer Drehschlagbohrer (2) nach Anspruch 3, wobei die dritte Steuerkammer (31) durch einen mit einer kalibrierten Öffnung (42) versehenen Fluidübertragungskanal (32) mit der Niederdruckfluid-Rückführleitung (11) verbunden ist.
  5. Hydraulischer Drehschlagbohrer (2) nach Anspruch 3 oder 4, wobei der Anschlagkolben (13) den Verbindungskanal (33) aufweist, und der Verbindungskanal (33) einen ersten Endabschnitt (33.1), der in die dritte Steuerkammer (31) mündet, und einen zweiten Endabschnitt (33.2), der gegenüber dem ersten Endabschnitt (33.1) liegt und in eine Außenfläche des Anschlagkolbens (13) mündet, aufweist, wobei der zweite Endabschnitt (33.2) des Verbindungskanals (33) ausgelegt ist, um mit der ersten Steuerkammer (22) fluidisch verbunden zu sein, wenn die Rückseite (19) des Anschlagkolbens (13) sich in einem Abstand von der Rückwand (21) des Hohlraums (14), der größer als der vorgegebene Wert ist, befindet.
  6. Hydraulischer Drehschlagbohrer (2) nach einem der Ansprüche 1 bis 4, wobei der Anschlagkolben (13) den Verbindungskanal (33) umfasst.
  7. Hydraulischer Drehschlagbohrer (2) nach Anspruch 6, wobei der Verbindungskanal (33) einen ersten Endabschnitt (33.1), der in der ersten Steuerkammer (22) mündet, und einen zweiten Endabschnitt (33.2), der dem ersten Endabschnitt (33.2) gegenüberliegt und in einer Außenfläche des Anschlagkolbens (13) mündet, aufweist, wobei der zweite Endabschnitt (33.2) des Verbindungskanals (33) ausgelegt ist, um fluidisch mit der Niederdruckfluid-Rückführleitung (11) verbunden zu sein, wenn die Rückseite (19) des Anschlagkolbens (13) sich in einem Abstand von der Rückwand (21) des Hohlraums (14), der größer als der vorgegebene Wert ist, befindet.
  8. Hydraulischer Drehschlagbohrer (2) nach Anspruch 7, wobei der Körper (3) eine ringförmige Nut (34) aufweist, die in den Hohlraum (14) mündet und permanent mit der Niederdruckfluid-Rücklaufleitung (11) verbunden ist, wobei der zweite Endabschnitt (33.2) des Verbindungskanals (33) ausgelegt ist, um fluidisch mit der ringförmigen Nut (34) verbunden zu sein, wenn die Rückseite (19) des Anschlagkolbens (13) sich in einem Abstand von der Rückwand (21) des Hohlraums (14), der größer als der vorgegebene Wert ist, befindet.
  9. Hydraulischer Drehschlagbohrer (2) nach einem der Ansprüche 1 bis 8, der einen Versorgungskanal (23) umfasst, der die erste Steuerkammer (22) mit der Hochdruckfluid-Versorgungsleitung (9) verbindet.
  10. Hydraulischer Drehschlagbohrer (2) nach Anspruch 9, wobei der Versorgungskanal (23) mit einer kalibrierten Öffnung (24) versehen ist.
  11. Hydraulischer Drehschlagbohrer (2) nach einem der Ansprüche 1 bis 10, wobei der Anschlagkolben (13) gleitend um den Schlagkolben (5) gelagert ist.
  12. Hydraulischer Drehschlagbohrer (2) nach einem der Ansprüche 1 bis 11, wobei der hydraulische Hauptversorgungskreislauf einen Hochdruck-Akkumulator (12) umfasst, der mit der Hochdruckfluid-Versorgungsleitung (9) verbunden ist.
  13. Hydraulischer Drehschlagbohrer (2) nach einem der Ansprüche 1 bis 12, der ferner ein ringförmiges Anschlagelement (38) umfasst, das zwischen der Armatur (15) und der Vorderseite (18) des Anschlagkolbens (13) angeordnet ist.
  14. Hydraulischer Drehschlagbohrer (2) nach einem der Ansprüche 1 bis 13, der ein Axiallager (44) umfasst, das zwischen der Rückseite (19) des Anschlagkolbens (13) und der Rückwand (21) des Hohlraums (14) angeordnet ist.
  15. Hydraulischer Drehschlagbohrer (2) nach einem der Ansprüche 1 bis 14, wobei der Anschlagkolben (13) ein ringförmiges Stützelement (39) umfasst, das so konfiguriert ist, dass es an einer ringförmigen Anschlagfläche (41) des Körpers (3) anliegt.
EP19705982.7A 2018-02-14 2019-01-16 Hydraulischer drehschlagbohrer mit einer permanent an einem niederdruckspeicher angeschlossenen steuerkammer Active EP3752325B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1851249A FR3077752B1 (fr) 2018-02-14 2018-02-14 Perforateur hydraulique roto-percutant pourvu d’une chambre de commande reliee en permanence a un accumulateur basse pression
PCT/FR2019/050089 WO2019158834A1 (fr) 2018-02-14 2019-01-16 Perforateur hydraulique roto-percutant pourvu d'une chambre de commande reliée en permanence à un accumulateur basse pression

Publications (2)

Publication Number Publication Date
EP3752325A1 EP3752325A1 (de) 2020-12-23
EP3752325B1 true EP3752325B1 (de) 2022-03-09

Family

ID=61913427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19705982.7A Active EP3752325B1 (de) 2018-02-14 2019-01-16 Hydraulischer drehschlagbohrer mit einer permanent an einem niederdruckspeicher angeschlossenen steuerkammer

Country Status (10)

Country Link
US (1) US11724379B2 (de)
EP (1) EP3752325B1 (de)
JP (1) JP2021513464A (de)
KR (1) KR20200120671A (de)
CN (1) CN111712353B (de)
AU (1) AU2019221107B2 (de)
CA (1) CA3088119C (de)
FR (1) FR3077752B1 (de)
WO (1) WO2019158834A1 (de)
ZA (1) ZA202005522B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3077753B1 (fr) * 2018-02-14 2020-01-31 Montabert Procede de reglage de la course de frappe d’un piston de frappe d’un appareil a percussions, et un appareil a percussions pour la mise en œuvre de ce procede
FR3108931B1 (fr) 2020-04-02 2022-04-08 Montabert Roger Perforateur hydraulique roto-percutant pourvu d’un emmanchement équipé de cannelures d’accouplement
FR3120247B1 (fr) 2021-03-01 2023-09-29 Montabert Roger Perforateur hydraulique roto-percutant pourvu d’un piston de butée

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8106907L (sv) * 1981-11-20 1983-05-21 Atlas Copco Ab Sett att styra ett slagverk och slagverk
SE508064C2 (sv) * 1993-10-15 1998-08-17 Atlas Copco Rock Drills Ab Bergborrningsanordning med reflexdämpare
FR2837523B1 (fr) * 2002-03-19 2004-05-14 Montabert Sa Marteau perforateur hydraulique roto-percutant
SE533344C2 (sv) * 2009-01-16 2010-08-31 Atlas Copco Rock Drills Ab Dämpningsanordning för slagverk, slagverk och borrmaskin
CN101927478B (zh) * 2009-06-23 2015-03-04 蒙塔博特公司 液压冲击设备
FR3027543B1 (fr) * 2014-10-28 2016-12-23 Montabert Roger Appareil a percussions

Also Published As

Publication number Publication date
CN111712353B (zh) 2023-03-21
CA3088119A1 (fr) 2019-08-22
ZA202005522B (en) 2021-08-25
CA3088119C (fr) 2024-04-23
JP2021513464A (ja) 2021-05-27
EP3752325A1 (de) 2020-12-23
FR3077752B1 (fr) 2020-01-31
US11724379B2 (en) 2023-08-15
AU2019221107B2 (en) 2024-04-04
FR3077752A1 (fr) 2019-08-16
US20210001462A1 (en) 2021-01-07
AU2019221107A1 (en) 2020-07-30
KR20200120671A (ko) 2020-10-21
WO2019158834A1 (fr) 2019-08-22
CN111712353A (zh) 2020-09-25

Similar Documents

Publication Publication Date Title
EP3752325B1 (de) Hydraulischer drehschlagbohrer mit einer permanent an einem niederdruckspeicher angeschlossenen steuerkammer
FR2647870A1 (fr) Appareil de percussion hydraulique avec dispositif d'amortissement des ondes de choc en retour
EP1492648B2 (de) Hydraulischer drehender schlagbohrhammer
FR2639279A1 (fr) Appareil de percussion hydraulique avec dispositif de frappe en retrait amortie
EP4053374B1 (de) Hydraulischer drehschlagbohrer mit einem anschlagkolben und einer bremskammer
EP4052854A1 (de) Hydraulischer drehschlagbohrer mit einem anschlagkolben
EP3212362B1 (de) Schlagvorrichtung
EP4080011A1 (de) Hydraulische drehschlagbohrmaschine
FR2596681A1 (fr) Appareil de percussion hydraulique avec dispositif d'amortissement des ondes de choc en retour
EP2616623B1 (de) Hydraulischer drehschlagbohrer zum bohren von minenlöchern
WO2018091791A1 (fr) Appareil à percussions
FR3108931A1 (fr) Perforateur hydraulique roto-percutant pourvu d’un emmanchement équipé de cannelures d’accouplement
FR3026041A1 (fr) Appareil de perforation hydraulique destine a la perforation de trous de mine
WO2020201288A1 (fr) Appareil à percussions avec régulation automatique de la pression d'alimentation de l'appareil à percussions
BE833220A (fr) Machine hydraulique a percussion

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

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

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

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

Free format text: ORIGINAL CODE: 0009012

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

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200828

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 602019012370

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: B25D0017060000

Ipc: B25D0017240000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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

Free format text: STATUS: GRANT OF PATENT IS INTENDED

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: E21B 6/04 20060101ALI20210929BHEP

Ipc: B25D 9/14 20060101ALI20210929BHEP

Ipc: B25D 17/06 20060101ALI20210929BHEP

Ipc: B25D 17/24 20060101AFI20210929BHEP

INTG Intention to grant announced

Effective date: 20211013

INTG Intention to grant announced

Effective date: 20211104

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

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

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

Ref country code: AT

Ref legal event code: REF

Ref document number: 1473721

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220315

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602019012370

Country of ref document: DE

REG Reference to a national code

Ref country code: FI

Ref legal event code: FGE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20220309

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

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220609

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220609

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

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220610

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

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

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220711

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

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

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220709

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602019012370

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

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

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

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

26N No opposition filed

Effective date: 20221212

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

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

REG Reference to a national code

Ref country code: AT

Ref legal event code: UEP

Ref document number: 1473721

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220309

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

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602019012370

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20230116

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

Ref country code: LU

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

Effective date: 20230116

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20230131

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

Ref country code: LI

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

Effective date: 20230131

Ref country code: GB

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

Effective date: 20230116

Ref country code: DE

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

Effective date: 20230801

Ref country code: CH

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

Effective date: 20230131

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

Ref country code: BE

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

Effective date: 20230131

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

Ref country code: IE

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

Effective date: 20230116

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

Ref country code: FR

Payment date: 20231229

Year of fee payment: 6

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

Ref country code: FI

Payment date: 20240124

Year of fee payment: 6

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

Ref country code: TR

Payment date: 20240108

Year of fee payment: 6

Ref country code: SE

Payment date: 20240119

Year of fee payment: 6

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

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220309