EP3347525A1 - Drilling machine - Google Patents

Drilling machine

Info

Publication number
EP3347525A1
EP3347525A1 EP16767339.1A EP16767339A EP3347525A1 EP 3347525 A1 EP3347525 A1 EP 3347525A1 EP 16767339 A EP16767339 A EP 16767339A EP 3347525 A1 EP3347525 A1 EP 3347525A1
Authority
EP
European Patent Office
Prior art keywords
drilling
support
module
drilling machine
drilling module
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP16767339.1A
Other languages
German (de)
French (fr)
Other versions
EP3347525B1 (en
Inventor
Sara CASCARINO
Daniel Perpezat
Laurent Pivert
Régis Bernasinski
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.)
Soletanche Freyssinet SA
Original Assignee
Soletanche Freyssinet SA
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 Soletanche Freyssinet SA filed Critical Soletanche Freyssinet SA
Publication of EP3347525A1 publication Critical patent/EP3347525A1/en
Application granted granted Critical
Publication of EP3347525B1 publication Critical patent/EP3347525B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B3/00—Rotary drilling
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/06—Deflecting the direction of boreholes
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2250/00—Production methods
    • E02D2250/0038—Production methods using an auger, i.e. continuous flight type
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same

Definitions

  • the present invention relates to the field of drilling in the ground, in particular to manufacture foundations, such as for example continuous screens consisting of juxtaposed concrete wall elements.
  • the invention particularly relates to a drilling machine for excavating in a soil in a substantially vertical direction of drilling, said drilling machine comprising:
  • a support having a substantially vertical longitudinal direction; a drilling module provided with cutting members, the drilling module being movable in translation relative to the support in the longitudinal direction of the support;
  • a displacement device disposed between the support and the drilling module for moving the drilling module relative to the support in the longitudinal direction of the support.
  • This type of drilling machine is generally used for drilling in hard ground, for example in granite.
  • the displacement device allows to exert a complementary thrust on the drilling tools, which aims to facilitate the excavation.
  • Another interest is to precisely control the thrust exerted on the cutting members.
  • An object of the present invention is to overcome the aforementioned drawbacks by proposing a drilling machine that is more robust for drilling in hard terrain.
  • the invention achieves its goal by the fact that the displacement device comprises damping means for damping the vibrations generated by the drilling module during the drilling.
  • the vibrations generated due to shocks to the cutting members during drilling are thus damped by the damping means which are arranged between the drilling module and the support. Also, thanks to the invention, the vibrations generated by the drilling module are damped and affect neither the cutting members nor the support, which advantageously allows not to damage the drilling machine.
  • the displacement device has the dual function of moving the drilling module relative to the support, and to dampen the vibrations generated by the cutting elements of the drilling module.
  • the displacement device comprises at least one hydraulic cylinder, connected to the support and to the drilling module, and the damping means comprise a hydraulic damping device fluidly connected to the hydraulic cylinder.
  • the hydraulic cylinder is advantageously disposed between the support and the drilling module. It allows first of all to be able to move in translation the drilling module relative to the support. It is understood that in this first embodiment, the damping is achieved hydraulically, thanks to the hydraulic damping device.
  • the latter preferably comprises, but not exclusively, a spring accumulator with at least one nozzle.
  • the oil contained in one of the chambers of the hydraulic cylinder is compressed and flows through the nozzle towards the spring-loaded accumulator, to dampen the rise in pressure of the oil, which makes it possible to achieve depreciation.
  • the leakage rate of the nozzle and the spring preload of the spring accumulator are remotely adjustable, which makes it possible to adjust the damping coefficient and the recoil resistance of the cylinders according to the weight applied to the organs cutting.
  • the drilling module comprises a lower section carrying the cutting members, and an upper section which passes longitudinally through said support, the upper section being slidably mounted relative to said support and having an upper end connected to the lower end. a lift cable.
  • the drilling module is suspended from the lift cable.
  • the latter is preferably operated by means of a winch connected to a carrier. More preferably, the upper end of the upper section protrudes beyond the upper end of the support.
  • the support is a frame whose transverse dimensions, considered in a plane perpendicular to the longitudinal direction, are substantially equal to or less than the transverse dimensions of the drilling module, and the frame comprises an anchoring device capable of blocking the displacement. of the support with respect to the walls of the excavation.
  • the anchoring device makes it possible in particular to block the vertical displacement of the drilling machine in the ground. Also, according to the invention, it is possible to immobilize the chassis in the ground while controlling the vertical displacement of the drilling module by means of the lifting cable.
  • the hydraulic damping device absorbs vibrations that are not transmitted to the chassis.
  • the displacement device comprises at least one hydraulic cylinder which is arranged between the support and the drilling module, and the damping means comprise a spring member disposed between the support and the module. drilling. It is understood that the spring member is disposed parallel to the hydraulic cylinder. The spring member is preferably, but not necessarily coaxial with the jack.
  • the spring member preferably comprises a spring.
  • the support comprises a mast; the cutting members are located at the lower end of a bar of the drilling module, and the displacement device comprises a carriage mounted to the mast slidably in the longitudinal direction of the mast, the carriage cooperating with said bar to move the bar with the drilling module in the longitudinal direction of the mast.
  • the bar traditionally called Kelly, and the mast are substantially parallel and extend in a substantially vertical direction. It is understood that the displacement of the carriage has the effect of moving the drilling module relative to the support.
  • the carriage comprises the damping means.
  • the vibrations generated by the drilling module are not transmitted to the mast or the carrier vehicle that supports it.
  • the carriage comprises a first part slidably mounted on the mast and a second part cooperating with the bar, and the damping means are arranged between the first and second parts of the carriage.
  • the first and second parts are preferably slidably mounted relative to each other in the longitudinal direction of the mast.
  • the damping means comprise a spring member disposed between the first and second parts of the carriage.
  • the spring member is preferably composed of a damper with a coaxial spring.
  • the damping means comprise a hydraulic damping device of the same type as that mentioned above.
  • the drilling module further comprises an anti-sway device to prevent a horizontal movement of the drilling module during the drilling.
  • the anti-swaying device comprises deployable pads disposed on the lateral edges of the drilling module and configured to abut against at least one of the walls of the excavation.
  • An interest is to prevent the waddling of the drilling module, which prevents the drilling trajectory deviates from the desired path, as well as unnecessary movements of the cutting members.
  • the drilling machine further comprises a device for regulating the damping coefficient of the damping means.
  • a device for regulating the damping coefficient of the damping means is to be able to adapt the damping means to the nature of the ground and the thrust exerted on the cutting members.
  • said drilling machine is a cutter whose cutting members comprise two pairs of drums which are rotary around axes of rotation parallel, distinct and perpendicular to the longitudinal direction of the support.
  • FIG. 1 illustrates a first embodiment of the drilling machine according to the invention wherein the displacement device comprises hydraulic cylinders;
  • FIG. 2 illustrates an example of the damping means of the displacement device of FIG. 1;
  • FIGS. 3A and 3B illustrate a second embodiment of the invention in which the damping means comprise springs disposed between the chassis and the drilling module;
  • FIGS. 4A and 4B illustrate a third embodiment of the invention wherein the displacement device comprises a carriage mounted to a mast slidably.
  • FIG. 1 there is illustrated a first embodiment of the drilling machine 10 according to the present invention.
  • This drilling machine 10 is used to perform an excavation E in a soil S in a drilling direction F which is substantially vertical.
  • the drilling machine 10 comprises a support 12 having a longitudinal direction L which is substantially vertical in this example.
  • the drilling machine 10 further comprises a drilling module 14 provided with cutting members 16.
  • the drilling machine 10 is a cutter whose cutting members 16 comprise two pairs of drums 18, 20 provided with cutting teeth 22, the two pairs of drums 18, 20 being respectively rotatably mounted about axes of rotation A, B which are parallel, distinct and perpendicular to the longitudinal direction L of the support 12.
  • the drilling module 14 comprises a lower section 24 which carries the cutting members 16, and in particular the drums 18, 20.
  • the lower section 24 further comprises a pumping module 26 which has the function of sucking the soil fragments excavated to evacuate them on the surface.
  • the drilling module 14 further comprises an anti-sway device 30 for preventing a horizontal movement of the drilling module 14 during drilling.
  • This anti-swaying device comprises deployable pads 32, 34 which are arranged on the lateral edges 24a, 24b of the lower section 24 of the drilling module 14. These deployable pads are arranged to cooperate with walls of the excavation when are deployed horizontally.
  • the deployable pads 32, 34 are actuated by jacks (not shown here) arranged in the lower section 24 of the drilling module 14.
  • the drilling module 14 further comprises an upper section 40, which extends vertically above the lower section 24, the upper section 40 here having the shape of a bar which extends longitudinally through the support 12.
  • the support 12 is a frame which comprises guide members 42 within which the upper section 40 is slidably mounted. It is therefore understood that the upper section 40 is slidably mounted relative to the frame 13 in a substantially vertical direction, as a result of which the drilling module 14 is movable in translation relative to the support 12.
  • the drilling module is movable in translation relative to the support in the drilling direction F, which is substantially vertical.
  • the upper section 40 of the drilling module 14 has an upper end 40a which protrudes beyond the upper end 12a of the support 12, this upper end 40a being connected to the lower end 50a of a lift cable 50.
  • This levitation cable 50 is connected to the upper end of a carrier (not shown here) known elsewhere.
  • the drilling machine 10 further comprises a displacement device 60 which is disposed between the support 12 and the drilling module 14, and whose function is to move the drilling module 14 relative to the support 12 in the longitudinal direction of the support .
  • the displacement device moves the drilling module relative to the support in the drilling direction F, which is substantially vertical.
  • the displacement device 60 comprises a pair of hydraulic cylinders 62, 64 which connect the support 12 to the lower section 24 of the drilling module 14. It is thus clear that the hydraulic cylinders 62, 64 are connected to the support 12 and the drilling module 14, so that their actuation makes it possible to move the drilling module vertically relative to the support 12.
  • the displacement device 60 further comprises damping means 70 for damping the vibrations generated by the drilling module 14 during the drilling.
  • FIG. 2 diagrammatically illustrates the drilling machine 10 according to the first embodiment of the invention, as well as the damping means 70.
  • the latter comprise a hydraulic damping device 72 which is fluidly connected to the hydraulic cylinders 62, 64.
  • the damping device comprises a spring accumulator 74 and the nozzle 77.
  • the damping means 70 furthermore comprise a device 76 for regulating the coefficient of stiffness of the damping means and more specifically the stiffness of the spring accumulator 74. They also comprise means for regulating the leakage flow at through the nozzle 77 so as to regulate the damping coefficient of the damping means. Also, during an impact, the vibrations generated by the cutting members are not transmitted to the support 12.
  • the frame 13 comprises an anchoring device 80 which is able to block the displacement of the support 12 relative to the walls of the excavation.
  • This anchoring device 80 comprises a plurality of deployable anchor pads referenced 82 which are configured to bear on the largest faces of the excavation to immobilize the support 12 in the excavation.
  • the drilling machine 110 illustrated in FIG. 3A thus comprises a displacement device 160 which connects the support 112 to the drilling module 114.
  • the drilling module 114 comprises a platform 115 which carries rotary drums 118, 120.
  • displacement device 160 comprises a pair of jacks 162, 164 which connect the lower end 112b of the support 112 to the platform 115. The actuation of the hydraulic cylinders 162, 164 makes it possible to move the translating the drilling module 114 relative to the support 112 according to the drilling direction F.
  • the damping means 170 comprise the hydraulic cylinders 162, 164 as well as two damping members 163, 165 which are arranged between the support 112 and the drilling module. 114.
  • the damping members 163, 165 comprise springs 167, 169 which surround the hydraulic cylinders 162, 164.
  • the combination of the springs 167, 169 and the hydraulic cylinders 162, 164 thus constitutes the damping means which make it possible to damp the damping means whose function is to damp the vibrations generated by the drilling module 114 during the drilling, and consequently, to prevent the transmission of vibrations to the support 212.
  • the springs 167, 169 could be arranged beside the hydraulic cylinders 162, 164 without being coaxial .
  • the drilling machine 210 comprises a track carrier 211 which is fixed support 212, which here takes the form of a longitudinal mast which extends vertically.
  • the cutting members 216 of the drilling module 214 are located at the lower end 213a of a longitudinal bar of the drilling module, traditionally called Kelly.
  • the displacement device 260 is disposed between the mast 212 and the bar 213 of the drilling module 214, and its function is to move the drilling module 214 relative to the mast 212 in the direction longitudinal L of the mast.
  • the displacement device 260 comprises a carriage 271, better visible in Figure 4B, which is mounted to the mast 212 slidably in the longitudinal direction L of the mast.
  • the carriage 271 cooperates with the bar 213 to move the drilling module 214 in the longitudinal direction of the mast.
  • the carriage 271 comprises a securing device for securing the bar 213 with said carriage 271 so that the displacement of the carriage 271 in the longitudinal direction L of the mast 212 causes the concomitant movement of the drilling module 214 in the direction drilling.
  • the displacement of the carriage 271 upwards and downwards is ensured in this example by a displacement member 273 comprising cables 275 and 277 fixed on either side of the carriage 271.
  • the carriage 271 includes a first portion 281 which is fixed to the mast 212 in a sliding manner, this first portion 281 being connected to the end of the cable 275.
  • the carriage 271 further comprises a second portion 283 which carries the bar 213 while being slidably mounted relative to the first portion of the carriage in the longitudinal direction of the bar 213.
  • the displacement device 260 further comprises damping means 270 for damping the vibrations generated by the drilling module 214 during the drilling.
  • damping means 210 are arranged between the first and second parts 281, 283 of the carriage 271. It is thus clear that in this second embodiment is the carriage 271 of the displacement device 260 which comprises the damping means 270.
  • the damping means 270 constitute in this example a suspension which comprises one or more hydraulic dampers 262 connecting the first portion 281 to the second portion 283 of the carriage 271, these dampers being associated in parallel with the springs 263.
  • the vibrations generated by the cutting members 216 are transmitted along the bar 213 to the second portion 283, and then absorbed by the damping means 270, so that the vibrations are not transmitted to the first part 281 or the mast 212.
  • the springs 263 could be arranged next to the dampers 262 without being coaxial.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Structural Engineering (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Abstract

The present invention relates to a drilling machine (10) for carrying out excavation in the ground (S) in a vertical drilling direction (F). Said drilling machine comprises: a mounting (12) having a longitudinal direction (L); a drilling module (14) provided with cutting members (16), the drilling module being translatable relative to the mounting; and a movement device, arranged between the mounting and the drilling module, for moving the drilling module (14) relative to the mounting in the longitudinal direction of the mounting. The invention is characterized in that the movement device comprises an absorption device (70) for absorbing the vibrations generated by the drilling module while carrying out the drilling.

Description

MACHINE DE FORAGE  DRILLING MACHINE
Arrière-plan de l'invention Background of the invention
La présente invention a trait au domaine du forage dans le sol, notamment en vue de fabriquer des fondations, comme par exemple des écrans continus constitués d'éléments de paroi de béton juxtaposés.  The present invention relates to the field of drilling in the ground, in particular to manufacture foundations, such as for example continuous screens consisting of juxtaposed concrete wall elements.
Elle concerne plus précisément une machine de forage pour réaliser des excavations dans le sol, et plus particulièrement dans des terrains durs.  More specifically, it relates to a drilling machine for making excavations in the ground, and more particularly in hard terrain.
L'invention concerne notamment une machine de forage pour réaliser une excavation dans un sol selon une direction de forage sensiblement verticale, ladite machine de forage comportant :  The invention particularly relates to a drilling machine for excavating in a soil in a substantially vertical direction of drilling, said drilling machine comprising:
un support ayant une direction longitudinale sensiblement verticale; un module de forage muni d'organes de coupe, le module de forage étant mobile en translation par rapport au support selon la direction longitudinale du support ;  a support having a substantially vertical longitudinal direction; a drilling module provided with cutting members, the drilling module being movable in translation relative to the support in the longitudinal direction of the support;
un dispositif de déplacement, disposé entre le support et le module de forage, pour déplacer le module de forage par rapport au support selon la direction longitudinale du support.  a displacement device disposed between the support and the drilling module for moving the drilling module relative to the support in the longitudinal direction of the support.
Ce type de machine de forage est généralement utilisé pour forer dans des terrains durs, par exemple dans du granité. Le dispositif de déplacement permet d'exercer une poussée complémentaire sur les outils de forage, qui a pour but de faciliter l'excavation. Un autre intérêt est de piloter avec précision la poussée exercée sur les organes de coupe.  This type of drilling machine is generally used for drilling in hard ground, for example in granite. The displacement device allows to exert a complementary thrust on the drilling tools, which aims to facilitate the excavation. Another interest is to precisely control the thrust exerted on the cutting members.
II est connu que le forage de terrains durs conduit à l'apparition de vibrations dans le module de forage, qui se propagent dans toute la machine et qui peuvent endommager la structure de la machine de forage. Cela est notamment le cas lorsque la machine de forage est une fraise. Les outils de coupe rotatifs ne sont pas en permanence en contact avec le terrain : ils le percutent à chaque fois que le tambour fait un tour. La superposition de tous ces chocs se traduit par des vibrations de la machine de forage. Ces chocs sont d'autant plus violents que le terrain est dur. Objet et résumé de l'invention It is known that the drilling of hard ground leads to the appearance of vibrations in the drilling module, which propagate throughout the machine and can damage the structure of the drilling machine. This is particularly the case when the drilling machine is a cutter. Rotating cutting tools are not permanently in contact with the ground: they hit it every time the drum makes a turn. The superimposition of all these shocks results in vibrations of the drilling machine. These shocks are all the more violent as the terrain is hard. Object and summary of the invention
Un but de la présente invention est de remédier aux inconvénients précités en proposant une machine de forage qui soit plus robuste pour forer en terrain dur.  An object of the present invention is to overcome the aforementioned drawbacks by proposing a drilling machine that is more robust for drilling in hard terrain.
L'invention atteint son but par le fait que le dispositif de déplacement comporte des moyens d'amortissement pour amortir les vibrations générées par le module de forage lors de la réalisation du forage.  The invention achieves its goal by the fact that the displacement device comprises damping means for damping the vibrations generated by the drilling module during the drilling.
Les vibrations générées du fait des chocs subis par les organes de coupe lors du forage sont donc amorties par les moyens d'amortissement qui sont disposés entre le module de forage et le support. Aussi, grâce à l'invention, les vibrations générées par le module de forage sont amorties et n'affectent ni les organes de coupe, ni le support, ce qui permet avantageusement de ne pas endommager la machine de forage.  The vibrations generated due to shocks to the cutting members during drilling are thus damped by the damping means which are arranged between the drilling module and the support. Also, thanks to the invention, the vibrations generated by the drilling module are damped and affect neither the cutting members nor the support, which advantageously allows not to damage the drilling machine.
Selon l'invention, le dispositif de déplacement présente la double fonction de déplacer le module de forage par rapport au support, et d'amortir les vibrations générées par les organes de coupe du module de forage.  According to the invention, the displacement device has the dual function of moving the drilling module relative to the support, and to dampen the vibrations generated by the cutting elements of the drilling module.
Selon un premier mode de réalisation, le dispositif de déplacement comporte au moins un vérin hydraulique, connecté au support et au module de forage, et les moyens d'amortissement comprennent un dispositif d'amortissement hydraulique relié fluidiquement au vérin hydraulique.  According to a first embodiment, the displacement device comprises at least one hydraulic cylinder, connected to the support and to the drilling module, and the damping means comprise a hydraulic damping device fluidly connected to the hydraulic cylinder.
Le vérin hydraulique est avantageusement disposé entre le support et le module de forage. Il permet tout d'abord de pouvoir déplacer en translation le module de forage par rapport au support. On comprend que, dans ce premier mode de réalisation, l'amortissement est réalisé de manière hydraulique, grâce au dispositif d'amortissement hydraulique. Ce dernier comporte de préférence, mais non exclusivement, un accumulateur à ressort avec au moins un gicleur. Lors d'un choc, l'huile contenue dans une des chambres du vérin hydraulique est comprimée et s'écoule à travers le gicleur vers l'accumulateur à ressort, pour amortir la montée en pression de l'huile, ce qui permet de réaliser l'amortissement. De préférence, le débit de fuite du gicleur et la précontrainte du ressort de l'accumulateur à ressort sont réglables à distance, ce qui permet de régler le coefficient d'amortissement et la résistance en recul des vérins en fonction du poids appliqué sur les organes de coupe. The hydraulic cylinder is advantageously disposed between the support and the drilling module. It allows first of all to be able to move in translation the drilling module relative to the support. It is understood that in this first embodiment, the damping is achieved hydraulically, thanks to the hydraulic damping device. The latter preferably comprises, but not exclusively, a spring accumulator with at least one nozzle. During an impact, the oil contained in one of the chambers of the hydraulic cylinder is compressed and flows through the nozzle towards the spring-loaded accumulator, to dampen the rise in pressure of the oil, which makes it possible to achieve depreciation. Preferably, the leakage rate of the nozzle and the spring preload of the spring accumulator are remotely adjustable, which makes it possible to adjust the damping coefficient and the recoil resistance of the cylinders according to the weight applied to the organs cutting.
Selon une variante préférentielle, le module de forage comporte une section inférieure portant les organes de coupe, et une section supérieure qui traverse longitudinalement ledit support, la section supérieure étant montée coulissante par rapport audit support et présentant une extrémité supérieure reliée à l'extrémité inférieure d'un câble de sustentation.  According to a preferred variant, the drilling module comprises a lower section carrying the cutting members, and an upper section which passes longitudinally through said support, the upper section being slidably mounted relative to said support and having an upper end connected to the lower end. a lift cable.
On comprend donc que le module de forage est suspendu au câble de sustentation. Ce dernier est de préférence actionné à l'aide d'un treuil relié à un porteur. Encore de préférence, l'extrémité supérieure de la section supérieure fait saillie au-delà de l'extrémité supérieure du support.  It is therefore understood that the drilling module is suspended from the lift cable. The latter is preferably operated by means of a winch connected to a carrier. More preferably, the upper end of the upper section protrudes beyond the upper end of the support.
De préférence, le support est un châssis dont les dimensions transversales, considérées dans un plan perpendiculaire à la direction longitudinale, sont sensiblement égales ou inférieures aux dimensions transversales du module de forage, et le châssis comporte un dispositif d'ancrage apte à bloquer le déplacement du support par rapport aux parois de l'excavation.  Preferably, the support is a frame whose transverse dimensions, considered in a plane perpendicular to the longitudinal direction, are substantially equal to or less than the transverse dimensions of the drilling module, and the frame comprises an anchoring device capable of blocking the displacement. of the support with respect to the walls of the excavation.
Le dispositif d'ancrage permet notamment de bloquer le déplacement vertical de la machine de forage dans le sol. Aussi, selon l'invention, on peut immobiliser le châssis dans le sol tout en contrôlant le déplacement vertical du module de forage à l'aide du câble de sustentation. Le dispositif d'amortissement hydraulique absorbe les vibrations qui ne sont pas transmises au châssis. The anchoring device makes it possible in particular to block the vertical displacement of the drilling machine in the ground. Also, according to the invention, it is possible to immobilize the chassis in the ground while controlling the vertical displacement of the drilling module by means of the lifting cable. The hydraulic damping device absorbs vibrations that are not transmitted to the chassis.
Selon un deuxième mode de réalisation de l'invention, le dispositif de déplacement comporte au moins un vérin hydraulique qui est disposé entre le support et le module de forage, et les moyens d'amortissement comportent un organe ressort disposé entre le support et le module de forage. On comprend que l'organe ressort est disposé parallèlement au vérin hydraulique. L'organe ressort est de préférence, mais pas nécessairement coaxial au vérin.  According to a second embodiment of the invention, the displacement device comprises at least one hydraulic cylinder which is arranged between the support and the drilling module, and the damping means comprise a spring member disposed between the support and the module. drilling. It is understood that the spring member is disposed parallel to the hydraulic cylinder. The spring member is preferably, but not necessarily coaxial with the jack.
L'organe ressort comporte de préférence un ressort.  The spring member preferably comprises a spring.
Selon un troisième mode de réalisation de l'invention, le support comprend un mât ; les organes de coupe sont situés à l'extrémité inférieure d'une barre du module de forage, et le dispositif de déplacement comprend un chariot monté au mât de manière coulissante selon la direction longitudinale du mât, le chariot coopérant avec ladite barre pour déplacer la barre avec le module de forage selon la direction longitudinale du mât.  According to a third embodiment of the invention, the support comprises a mast; the cutting members are located at the lower end of a bar of the drilling module, and the displacement device comprises a carriage mounted to the mast slidably in the longitudinal direction of the mast, the carriage cooperating with said bar to move the bar with the drilling module in the longitudinal direction of the mast.
La barre, traditionnellement appelée Kelly, et le mât sont sensiblement parallèles et s'étendent selon une direction sensiblement verticale. On comprend que le déplacement du chariot a pour effet de déplacer le module de forage par rapport au support.  The bar, traditionally called Kelly, and the mast are substantially parallel and extend in a substantially vertical direction. It is understood that the displacement of the carriage has the effect of moving the drilling module relative to the support.
De façon particulièrement avantageuse, le chariot comporte les moyens d'amortissement.  In a particularly advantageous manner, the carriage comprises the damping means.
Aussi, grâce à l'invention, les vibrations générées par le module de forage ne sont pas transmises au mât, ni au véhicule porteur qui le supporte.  Also, thanks to the invention, the vibrations generated by the drilling module are not transmitted to the mast or the carrier vehicle that supports it.
Selon une variante avantageuse, le chariot comporte une première partie montée coulissante au mât et une deuxième partie coopérant avec la barre, et les moyens d'amortissement sont disposés entre les première et deuxième parties du chariot. According to an advantageous variant, the carriage comprises a first part slidably mounted on the mast and a second part cooperating with the bar, and the damping means are arranged between the first and second parts of the carriage.
Les première et deuxième parties sont préférentiellement montées coulissantes l'une par rapport à l'autre selon la direction longitudinale du mât.  The first and second parts are preferably slidably mounted relative to each other in the longitudinal direction of the mast.
De préférence, les moyens d'amortissement comportent un organe ressort disposé entre les première et deuxième parties du chariot. L'organe ressort est de préférence composé d'un amortisseur avec un ressort coaxial. Selon une alternative, les moyens d'amortissement comportent un dispositif d'amortissement hydraulique du même type que celui mentionné ci-dessus.  Preferably, the damping means comprise a spring member disposed between the first and second parts of the carriage. The spring member is preferably composed of a damper with a coaxial spring. According to an alternative, the damping means comprise a hydraulic damping device of the same type as that mentioned above.
Avantageusement, en combinaison avec l'un ou l'autre des modes de réalisation décrits ci-dessus, le module de forage comporte en outre un dispositif anti-balancement pour empêcher un mouvement horizontal du module de forage pendant la réalisation du forage.  Advantageously, in combination with one or other of the embodiments described above, the drilling module further comprises an anti-sway device to prevent a horizontal movement of the drilling module during the drilling.
Avantageusement, le dispositif anti-balancement comporte des patins déployables disposés sur les bords latéraux du module de forage et configurés pour venir en appui contre au moins l'une des parois de l'excavation.  Advantageously, the anti-swaying device comprises deployable pads disposed on the lateral edges of the drilling module and configured to abut against at least one of the walls of the excavation.
Un intérêt est d'empêcher le dandinement du module de forage, ce qui permet d'éviter que la trajectoire de forage ne dévie par rapport à la trajectoire désirée, ainsi que les mouvements inutiles des organes de coupe.  An interest is to prevent the waddling of the drilling module, which prevents the drilling trajectory deviates from the desired path, as well as unnecessary movements of the cutting members.
Avantageusement, la machine de forage comporte en outre un dispositif de régulation du coefficient d'amortissement des moyens d'amortissement. Un intérêt est de pouvoir adapter les moyens d'amortissement à la nature du terrain et à la poussée exercée sur les organes de coupe.  Advantageously, the drilling machine further comprises a device for regulating the damping coefficient of the damping means. An interest is to be able to adapt the damping means to the nature of the ground and the thrust exerted on the cutting members.
Avantageusement, ladite machine de forage est une fraise dont les organes de coupe comportent deux paires de tambours qui sont rotatifs autour d'axes de rotation parallèles, distincts et perpendiculaires à la direction longitudinale du support. Advantageously, said drilling machine is a cutter whose cutting members comprise two pairs of drums which are rotary around axes of rotation parallel, distinct and perpendicular to the longitudinal direction of the support.
Brève description des dessins Brief description of the drawings
L'invention sera mieux comprise à la lecture de la description qui suit de modes de réalisation de l'invention donnés à titre d'exemples non limitatifs, en référence aux dessins annexés, sur lesquels :  The invention will be better understood on reading the following description of embodiments of the invention given as non-limiting examples, with reference to the accompanying drawings, in which:
- la figure 1 illustre un premier mode de réalisation de la machine de forage selon l'invention dans lequel le dispositif de déplacement comporte des vérins hydrauliques ;  - Figure 1 illustrates a first embodiment of the drilling machine according to the invention wherein the displacement device comprises hydraulic cylinders;
- la figure 2 illustre un exemple des moyens d'amortissement du dispositif de déplacement de la figure 1 ;  FIG. 2 illustrates an example of the damping means of the displacement device of FIG. 1;
- les figures 3A et 3B illustrent un deuxième mode de réalisation de l'invention dans lequel les moyens d'amortissement comprennent des ressorts disposés entre le châssis et le module de forage ; et  FIGS. 3A and 3B illustrate a second embodiment of the invention in which the damping means comprise springs disposed between the chassis and the drilling module; and
- les figures 4A et 4B illustrent un troisième mode de réalisation de l'invention dans lequel le dispositif de déplacement comporte un chariot monté à un mât de manière coulissante.  - Figures 4A and 4B illustrate a third embodiment of the invention wherein the displacement device comprises a carriage mounted to a mast slidably.
Description détaillée de l'invention Detailed description of the invention
Sur la figure 1 on a illustré un premier mode de réalisation de la machine de forage 10 selon la présente invention. Cette machine de forage 10 est utilisée pour réaliser une excavation E dans un sol S selon une direction de forage F qui est sensiblement verticale.  In Figure 1 there is illustrated a first embodiment of the drilling machine 10 according to the present invention. This drilling machine 10 is used to perform an excavation E in a soil S in a drilling direction F which is substantially vertical.
La machine de forage 10 comporte un support 12 ayant une direction longitudinale L qui est sensiblement verticale dans cet exemple. La machine de forage 10 comporte en outre un module de forage 14 muni d'organes de coupe 16. Dans cet exemple, la machine de forage 10 est une fraise dont les organes de coupe 16 comporte deux paires de tambours 18, 20 munis de dents de coupe 22, les deux paires de tambours 18, 20 étant respectivement montés rotatifs autour d'axes de rotation A, B qui sont parallèles, distincts et perpendiculaires à la direction longitudinale L du support 12. The drilling machine 10 comprises a support 12 having a longitudinal direction L which is substantially vertical in this example. The drilling machine 10 further comprises a drilling module 14 provided with cutting members 16. In this example, the drilling machine 10 is a cutter whose cutting members 16 comprise two pairs of drums 18, 20 provided with cutting teeth 22, the two pairs of drums 18, 20 being respectively rotatably mounted about axes of rotation A, B which are parallel, distinct and perpendicular to the longitudinal direction L of the support 12.
Le module de forage 14 comporte une section inférieure 24 qui porte les organes de coupe 16, et notamment les tambours 18, 20. La section inférieure 24 comporte en outre un module de pompage 26 qui a pour fonction d'aspirer les fragments de sol excavé afin de les évacuer en surface.  The drilling module 14 comprises a lower section 24 which carries the cutting members 16, and in particular the drums 18, 20. The lower section 24 further comprises a pumping module 26 which has the function of sucking the soil fragments excavated to evacuate them on the surface.
Le module de forage 14 comporte en outre un dispositif antibalancement 30 pour empêcher un mouvement horizontal du module de forage 14 pendant la réalisation du forage. Ce dispositif anti-balancement comporte des patins déployables 32, 34 qui sont disposés sur les bords latéraux 24a, 24b de la section inférieure 24 du module de forage 14. Ces patins déployables sont agencés pour coopérer avec des parois de l'excavation lorsqu'ils sont déployés horizontalement. Les patins déployables 32, 34 sont actionnés par des vérins (non représentés ici) disposés dans la section inférieure 24 du module de forage 14.  The drilling module 14 further comprises an anti-sway device 30 for preventing a horizontal movement of the drilling module 14 during drilling. This anti-swaying device comprises deployable pads 32, 34 which are arranged on the lateral edges 24a, 24b of the lower section 24 of the drilling module 14. These deployable pads are arranged to cooperate with walls of the excavation when are deployed horizontally. The deployable pads 32, 34 are actuated by jacks (not shown here) arranged in the lower section 24 of the drilling module 14.
Le module de forage 14 comporte en outre une section supérieure 40, qui s'étend verticalement au-dessus de la section inférieure 24, la section supérieure 40 présentant ici la forme d'une barre qui traverse longitudinalement le support 12. Dans cet exemple, le support 12 est un châssis qui comporte des organes de guidage 42 à l'intérieur desquels la section supérieure 40 est montée coulissante. On comprend donc que la section supérieure 40 est montée coulissante par rapport au châssis 13 selon une direction sensiblement verticale, en conséquence de quoi le module de forage 14 est mobile en translation par rapport au support 12.  The drilling module 14 further comprises an upper section 40, which extends vertically above the lower section 24, the upper section 40 here having the shape of a bar which extends longitudinally through the support 12. In this example, the support 12 is a frame which comprises guide members 42 within which the upper section 40 is slidably mounted. It is therefore understood that the upper section 40 is slidably mounted relative to the frame 13 in a substantially vertical direction, as a result of which the drilling module 14 is movable in translation relative to the support 12.
Dans ce premier mode de réalisation, le module de forage est donc mobile en translation par rapport au support selon la direction de forage F, qui est sensiblement verticale. La section supérieure 40 du module de forage 14 présente une extrémité supérieure 40a qui fait saillie au-delà de l'extrémité supérieure 12a du support 12, cette extrémité supérieure 40a étant reliée à l'extrémité inférieure 50a d'un câble de sustentation 50. Ce câble de sustentation 50 est relié à l'extrémité supérieure d'un porteur (non représenté ici) connu par ailleurs. In this first embodiment, the drilling module is movable in translation relative to the support in the drilling direction F, which is substantially vertical. The upper section 40 of the drilling module 14 has an upper end 40a which protrudes beyond the upper end 12a of the support 12, this upper end 40a being connected to the lower end 50a of a lift cable 50. This levitation cable 50 is connected to the upper end of a carrier (not shown here) known elsewhere.
La machine de forage 10 comporte en outre un dispositif de déplacement 60 qui est disposé entre le support 12 et le module de forage 14, et qui a pour fonction de déplacer le module de forage 14 par rapport au support 12 selon la direction longitudinale du support. Autrement dit, le dispositif de déplacement permet de déplacer le module de forage par rapport au support selon la direction de forage F, qui est sensiblement verticale.  The drilling machine 10 further comprises a displacement device 60 which is disposed between the support 12 and the drilling module 14, and whose function is to move the drilling module 14 relative to the support 12 in the longitudinal direction of the support . In other words, the displacement device moves the drilling module relative to the support in the drilling direction F, which is substantially vertical.
Dans le premier mode de réalisation, le dispositif de déplacement 60 comporte une paire de vérins hydrauliques 62, 64 qui relient le support 12 à la section inférieure 24 du module de forage 14. On comprend donc que les vérins hydrauliques 62, 64 sont connectés au support 12 et au module de forage 14, de sorte que leur actionnement permet de déplacer verticalement le module de forage par rapport au support 12.  In the first embodiment, the displacement device 60 comprises a pair of hydraulic cylinders 62, 64 which connect the support 12 to the lower section 24 of the drilling module 14. It is thus clear that the hydraulic cylinders 62, 64 are connected to the support 12 and the drilling module 14, so that their actuation makes it possible to move the drilling module vertically relative to the support 12.
Conformément à l'invention, le dispositif de déplacement 60 comporte en outre des moyens d'amortissement 70 pour amortir les vibrations générées par le module de forage 14 lors de la réalisation du forage.  According to the invention, the displacement device 60 further comprises damping means 70 for damping the vibrations generated by the drilling module 14 during the drilling.
Sur la figure 2, on a illustré de manière schématique la machine de forage 10 selon le premier mode de réalisation de l'invention, ainsi que les moyens d'amortissement 70. Ces derniers comportent un dispositif d'amortissement hydraulique 72 qui est relié fluidiquement aux vérins hydrauliques 62, 64. Dans cet exemple, le dispositif d'amortissement comprend un accumulateur à ressorts 74 et le gicleur 77. Lors d'un choc subi par les organes de coupe 16, l'huile contenue dans les grandes chambres 62a, 64a des vérins hydrauliques 62, 64 est comprimée et s'écoule vers l'accumulateur à ressorts 74, à travers le gicleur 77 ce qui va amortir la montée en pression de l'huile, ce qui permet de réaliser l'amortissement. Les moyens d'amortissement 70 comportent en outre un dispositif 76 de régulation du coefficient de la raideur des moyens d'amortissement et plus précisément de la raideur de l'accumulateur à ressort 74. Ils comportent également des moyens pour réguler le débit de fuite à travers le gicleur 77 de manière à réguler le coefficient d'amortissement des moyens d'amortissement. Aussi, lors d'un choc, les vibrations générées par les organes de coupe ne sont pas transmises au support 12. FIG. 2 diagrammatically illustrates the drilling machine 10 according to the first embodiment of the invention, as well as the damping means 70. The latter comprise a hydraulic damping device 72 which is fluidly connected to the hydraulic cylinders 62, 64. In this example, the damping device comprises a spring accumulator 74 and the nozzle 77. During a shock suffered by the cutting members 16, the oil contained in the large chambers 62a, 64a of the hydraulic cylinders 62, 64 is compressed and flows to the spring accumulator 74, through the nozzle 77 which will dampen the rise in oil pressure, which allows for damping. The damping means 70 furthermore comprise a device 76 for regulating the coefficient of stiffness of the damping means and more specifically the stiffness of the spring accumulator 74. They also comprise means for regulating the leakage flow at through the nozzle 77 so as to regulate the damping coefficient of the damping means. Also, during an impact, the vibrations generated by the cutting members are not transmitted to the support 12.
Selon un autre aspect de l'invention, le châssis 13 comporte un dispositif d'ancrage 80 qui est apte à bloquer le déplacement du support 12 par rapport aux parois de l'excavation. Ce dispositif d'ancrage 80 comporte une pluralité de patins d'ancrage déployables référencés 82 qui sont configurés pour prendre appui sur les plus grandes faces de l'excavation afin d'immobiliser le support 12 dans l'excavation.  According to another aspect of the invention, the frame 13 comprises an anchoring device 80 which is able to block the displacement of the support 12 relative to the walls of the excavation. This anchoring device 80 comprises a plurality of deployable anchor pads referenced 82 which are configured to bear on the largest faces of the excavation to immobilize the support 12 in the excavation.
A l'aide des figures 3A et 3B, on va maintenant décrire un deuxième mode de réalisation de la machine de forage 110 selon l'invention. Les caractéristiques identiques à celles du premier mode de réalisation portent la même référence numérique augmentée de la valeur cent. La machine de forage 110 illustrée en figure 3A comporte donc un dispositif de déplacement 160 qui relie le support 112 au module de forage 114. Dans cet exemple, le module de forage 114 comporte une plateforme 115 qui porte des tambours rotatifs 118, 120. Le dispositif de déplacement 160 comporte une paire de vérins 162, 164 qui relient l'extrémité inférieure 112b du support 112 à la plateforme 115. L'actionnement des vérins hydrauliques 162, 164 permet de déplacer en translation le module de forage 114 par rapport au support 112 selon la direction de forage F. With the aid of FIGS. 3A and 3B, a second embodiment of the drilling machine 110 according to the invention will now be described. The characteristics identical to those of the first embodiment bear the same numerical reference plus the value cent. The drilling machine 110 illustrated in FIG. 3A thus comprises a displacement device 160 which connects the support 112 to the drilling module 114. In this example, the drilling module 114 comprises a platform 115 which carries rotary drums 118, 120. displacement device 160 comprises a pair of jacks 162, 164 which connect the lower end 112b of the support 112 to the platform 115. The actuation of the hydraulic cylinders 162, 164 makes it possible to move the translating the drilling module 114 relative to the support 112 according to the drilling direction F.
Dans ce deuxième mode de réalisation, les moyens d'amortissement 170, bien visibles sur la figure 3B, comportent les vérins hydrauliques 162, 164 ainsi que deux organes d'amortissement 163, 165 qui sont disposés entre le support 112 et le module de forage 114. Dans cet exemple, les organes d'amortissement 163, 165 comportent des ressorts 167, 169 qui entourent les vérins hydrauliques 162, 164.  In this second embodiment, the damping means 170, clearly visible in FIG. 3B, comprise the hydraulic cylinders 162, 164 as well as two damping members 163, 165 which are arranged between the support 112 and the drilling module. 114. In this example, the damping members 163, 165 comprise springs 167, 169 which surround the hydraulic cylinders 162, 164.
L'association des ressorts 167, 169 et des vérins hydrauliques 162, 164 constitue donc les moyens d'amortissement qui permettent d'amortir les moyens d'amortissement qui ont pour fonction d'amortir les vibrations générées par le module de forage 114 lors de la réalisation du forage, et par voie de conséquence, d'empêcher la transmission des vibrations au support 212. Sans sortir du cadre de l'invention, les ressorts 167, 169 pourraient être disposés à côté des vérins hydrauliques 162, 164 sans être coaxiaux.  The combination of the springs 167, 169 and the hydraulic cylinders 162, 164 thus constitutes the damping means which make it possible to damp the damping means whose function is to damp the vibrations generated by the drilling module 114 during the drilling, and consequently, to prevent the transmission of vibrations to the support 212. Without departing from the scope of the invention, the springs 167, 169 could be arranged beside the hydraulic cylinders 162, 164 without being coaxial .
A l'aide des figures 4A et 4B, on va maintenant décrire un troisième mode de réalisation de la machine de forage 210 selon la présente invention. Là encore, les éléments identiques à ceux du premier mode de réalisation portent la même référence numérique augmentée de la valeur deux cents. Dans ce troisième mode de réalisation, la machine de forage 210 comporte un porteur à chenilles 211 auquel est fixé le support 212, qui prend ici la forme d'un mât longitudinal qui s'étend verticalement.  With the aid of FIGS. 4A and 4B, a third embodiment of the drilling machine 210 according to the present invention will now be described. Here again, the elements identical to those of the first embodiment carry the same numerical reference plus two hundred. In this third embodiment, the drilling machine 210 comprises a track carrier 211 which is fixed support 212, which here takes the form of a longitudinal mast which extends vertically.
Les organes de coupe 216 du module de forage 214 sont situés à l'extrémité inférieure 213a d'une barre longitudinale du module de forage, traditionnellement appelée Kelly.  The cutting members 216 of the drilling module 214 are located at the lower end 213a of a longitudinal bar of the drilling module, traditionally called Kelly.
Le dispositif de déplacement 260 est disposé entre le mât 212 et la barre 213 du module de forage 214, et a pour fonction de déplacer le module de forage 214 par rapport au mât 212 selon la direction longitudinale L du mât. Pour ce faire, le dispositif de déplacement 260 comporte un chariot 271, mieux visible sur la figure 4B, qui est monté au mât 212 de manière coulissante selon la direction longitudinale L du mât. Le chariot 271 coopère avec la barre 213 pour déplacer le module de forage 214 selon la direction longitudinale du mât. Dans cet exemple, le chariot 271 comporte un dispositif de solidarisation permettant de solidariser la barre 213 avec ledit chariot 271 de façon que le déplacement du chariot 271 selon la direction longitudinale L du mât 212 entraîne le déplacement concomitant du module de forage 214 selon la direction de forage. Le déplacement du chariot 271 vers le haut et vers le bas est assuré dans cet exemple par un organe de déplacement 273 comprenant des câbles 275 et 277 fixés de part et d'autre du chariot 271. The displacement device 260 is disposed between the mast 212 and the bar 213 of the drilling module 214, and its function is to move the drilling module 214 relative to the mast 212 in the direction longitudinal L of the mast. To do this, the displacement device 260 comprises a carriage 271, better visible in Figure 4B, which is mounted to the mast 212 slidably in the longitudinal direction L of the mast. The carriage 271 cooperates with the bar 213 to move the drilling module 214 in the longitudinal direction of the mast. In this example, the carriage 271 comprises a securing device for securing the bar 213 with said carriage 271 so that the displacement of the carriage 271 in the longitudinal direction L of the mast 212 causes the concomitant movement of the drilling module 214 in the direction drilling. The displacement of the carriage 271 upwards and downwards is ensured in this example by a displacement member 273 comprising cables 275 and 277 fixed on either side of the carriage 271.
On comprend que le chariot 271 est déplacé vers les extrémités supérieures et inférieures du mât 212 grâce à la traction exercée par les câbles 275 et 277, lesquels sont actionnés par un ou plusieurs treuils (non représentés ici) disposés sur le porteur, de tels treuils étant bien connus par ailleurs.  It is understood that the carriage 271 is moved towards the upper and lower ends of the mast 212 thanks to the traction exerted by the cables 275 and 277, which are actuated by one or more winches (not shown here) arranged on the carrier, such winches being well known elsewhere.
Le chariot 271 comporte une première partie 281 qui est fixée au mât 212 de manière coulissante, cette première partie 281 étant reliée à l'extrémité du câble 275. Le chariot 271 comporte en outre une deuxième partie 283 qui porte la barre 213 tout en étant montée coulissante par rapport à la première partie du chariot selon la direction longitudinale de la barre 213.  The carriage 271 includes a first portion 281 which is fixed to the mast 212 in a sliding manner, this first portion 281 being connected to the end of the cable 275. The carriage 271 further comprises a second portion 283 which carries the bar 213 while being slidably mounted relative to the first portion of the carriage in the longitudinal direction of the bar 213.
Selon l'invention, le dispositif de déplacement 260 comporte en outre des moyens d'amortissement 270 pour amortir les vibrations générées par le module de forage 214 lors de la réalisation du forage. Ces moyens d'amortissement 210 sont disposés entre les première et deuxième parties 281, 283 du chariot 271. On comprend donc que, dans ce deuxième mode de réalisation, c'est le chariot 271 du dispositif de déplacement 260 qui comporte les moyens d'amortissement 270. According to the invention, the displacement device 260 further comprises damping means 270 for damping the vibrations generated by the drilling module 214 during the drilling. These damping means 210 are arranged between the first and second parts 281, 283 of the carriage 271. It is thus clear that in this second embodiment is the carriage 271 of the displacement device 260 which comprises the damping means 270.
Dans cet exemple, les moyens d'amortissement 270 constituent dans cet exemple une suspension qui comporte un ou plusieurs amortisseurs hydrauliques 262 reliant la première partie 281 à la deuxième partie 283 du chariot 271, ces amortisseurs étant associés de façon parallèle à des ressorts 263  In this example, the damping means 270 constitute in this example a suspension which comprises one or more hydraulic dampers 262 connecting the first portion 281 to the second portion 283 of the carriage 271, these dampers being associated in parallel with the springs 263.
On comprend que, lors du forage, les vibrations générées par les organes de coupe 216 sont transmises le long de la barre 213 jusqu'à la deuxième partie 283, pour être ensuite absorbées par les moyens d'amortissement 270, de sorte que les vibrations ne sont pas transmises à la première partie 281, ni au mât 212. Sans sortir du cadre de l'invention, les ressorts 263 pourraient être disposés à côté des amortisseurs 262 sans être coaxiaux.  It will be understood that, during drilling, the vibrations generated by the cutting members 216 are transmitted along the bar 213 to the second portion 283, and then absorbed by the damping means 270, so that the vibrations are not transmitted to the first part 281 or the mast 212. Without departing from the scope of the invention, the springs 263 could be arranged next to the dampers 262 without being coaxial.

Claims

REVENDICATIONS
1. Machine de forage (10,110,210) pour réaliser une excavation dans un sol (S) selon une direction de forage (F) sensiblement verticale, ladite machine de forage (10,110,210) comportant : 1. Drilling machine (10, 110, 210) for excavating in a soil (S) in a substantially vertical direction of drilling (F), said drilling machine (10, 110, 210) comprising:
un support (12,112,212) ayant une direction longitudinale a support (12,112,212) having a longitudinal direction
(L) ; (L);
un module de forage (14,114,214) muni d'organes de coupe (16,116,216) , le module de forage étant mobile en translation par rapport au support (12,112,212) selon la direction longitudinale (L) du support ;  a drilling module (14,114,214) provided with cutting members (16,116,216), the drilling module being movable in translation relative to the support (12,112,212) in the longitudinal direction (L) of the support;
un dispositif de déplacement (60,160,260), disposé entre le support (12,112,212) et le module de forage (14,114,214), pour déplacer le module de forage (14,114,214) par rapport au support (12,112,212) selon la direction longitudinale (L) du support ;  a displacement device (60,160,260) disposed between the support (12,112,212) and the drilling module (14,114,214) for moving the drilling module (14,114,214) relative to the support (12,112,212) in the longitudinal direction (L) of the support;
caractérisée en ce que le dispositif de déplacement (60,160,260) comporte des moyens d'amortissement (70,170,270) pour amortir les vibrations générées par le module de forage (14,114,214) lors de la réalisation du forage.  characterized in that the displacement device (60,160,260) comprises damping means (70,170,270) for damping the vibrations generated by the drilling module (14,114,214) during the drilling.
2. Machine de forage selon la revendication 1, dans laquelle le dispositif de déplacement (60,260) comporte au moins un vérin hydraulique (62,64,262), reliant le support au module de forage, et dans laquelle les moyens d'amortissement comprennent un dispositif d'amortissement hydraulique (72,272) relié fluidiquement au vérin hydraulique (62,64 ; 262). The drilling machine according to claim 1, wherein the displacement device (60,260) comprises at least one hydraulic cylinder (62,64,262), connecting the support to the drilling module, and wherein the damping means comprise a device hydraulic damping device (72,272) fluidly connected to the hydraulic cylinder (62,64; 262).
3. Machine de forage selon l'une quelconque des revendications précédentes, dans laquelle le module de forage (14) comporte une section inférieure (24) portant les organes de coupe (16), et une section supérieure (40) qui traverse longitudinalement ledit support (12), la section supérieure (40) étant montée coulissante par rapport audit support (12) et présentant une extrémité supérieure (40a) reliée à l'extrémité inférieure (50a) d'un câble de sustentation (50). A drilling machine according to any one of the preceding claims, wherein the drilling module (14) has a lower section (24) carrying the cutting members (16), and a upper section (40) which extends longitudinally through said support (12), the upper section (40) being slidably mounted relative to said support (12) and having an upper end (40a) connected to the lower end (50a) of a lift cable (50).
4. Machine de forage (110) selon la revendication 3, dans laquelle le support est un châssis (13) dont les dimensions transversales, considérées dans un plan perpendiculaire à la direction longitudinale, sont sensiblement égales ou inférieures aux dimensions transversales du module de forage, et dans laquelle ledit châssis comporte un dispositif d'ancrage (80) apte à bloquer le déplacement du châssis (13) par rapport aux parois de l'excavation. 4. drilling machine (110) according to claim 3, wherein the support is a frame (13) whose transverse dimensions, considered in a plane perpendicular to the longitudinal direction, are substantially equal to or less than the transverse dimensions of the drilling module , and wherein said frame comprises an anchoring device (80) adapted to block the displacement of the frame (13) relative to the walls of the excavation.
5. Machine de forage (110) selon la revendication 1, dans laquelle le dispositif de déplacement comporte au moins un vérin hydraulique qui est disposé entre le support et le module de forage, et dans laquelle les moyens d'amortissement (170) comportent un organe ressort disposé entre le support (112) et le module de forage (114). The drilling machine (110) according to claim 1, wherein the displacement device comprises at least one hydraulic cylinder which is disposed between the support and the drilling module, and wherein the damping means (170) comprise a spring member disposed between the support (112) and the drilling module (114).
6. Machine de forage selon la revendication 5, dans laquelle l'organe ressort (163,165) comporte un ressort (167,169). 6. Drilling machine according to claim 5, wherein the spring member (163,165) comprises a spring (167,169).
7. Machine de forage (210) selon la revendication 1, dans laquelle le support comprend un mât ( 212), dans laquelle les organes de coupe sont situés à l'extrémité inférieure (213a) d'une barre (213) du module de forage, et dans laquelle le dispositif de déplacement (260) comprend un chariot (271) monté au mât ( 212 de manière coulissante selon la direction longitudinale (L) du mât ( 212), le chariot (271) coopérant avec ladite barre (213) pour déplacer le module de forage (214) selon la direction longitudinale du mât. The drilling machine (210) according to claim 1, wherein the support comprises a mast (212), wherein the cutting members are located at the lower end (213a) of a bar (213) of the module. drilling, and wherein the displacement device (260) comprises a mast-mounted carriage (271) (212) slidably in the longitudinal direction (L) of the mast (212), the carriage (271) cooperating with said bar (213) for moving the drilling module (214) in the longitudinal direction of the mast.
8. Machine de forage selon la revendication 7, dans laquelle le chariot (271) comporte les moyens d'amortissement (270). 8. Drilling machine according to claim 7, wherein the carriage (271) comprises the damping means (270).
9. Machine de forage (210) selon la revendication 8, dans laquelle le chariot (271) comporte une première partie (281) montée au mât (213) de manière coulissante et une deuxième partie (283) coopérant avec la barre (213), et dans laquelle les moyens d'amortissement (270) sont disposés entre les première et deuxième parties (281,283) du chariot (271). The drilling machine (210) according to claim 8, wherein the carriage (271) has a first portion (281) slidably mounted to the mast (213) and a second portion (283) cooperating with the bar (213). and wherein the damping means (270) is disposed between the first and second portions (281, 283) of the carriage (271).
10. Machine de forage selon la revendication 9, dans laquelle les moyens d'amortissement (270) comportent un vérin hydrauliqueThe drilling machine according to claim 9, wherein the damping means (270) comprises a hydraulic jack
(262) couplé à un dispositif d'amortissement hydraulique (272). (262) coupled to a hydraulic damping device (272).
11. Machine de forage selon l'une quelconque des revendications précédentes, dans laquelle le module de forage (14) comporte en outre un dispositif anti-balancement (30) pour empêcher un mouvement horizontal du module de forage (14) pendant la réalisation du forage. A drilling machine according to any one of the preceding claims, wherein the drilling module (14) further comprises an anti-sway device (30) for preventing horizontal movement of the drilling module (14) during the production of the drilling module (14). drilling.
12. Machine de forage selon la revendication 11, dans laquelle le dispositif anti-balancement (30) comporte des patins déployablesThe drilling machine according to claim 11, wherein the anti-sway device (30) has deployable pads.
(32,34) disposés sur les bords latéraux (24a,24b) du module de forage et agencés pour coopérer avec des parois de l'excavation. (32,34) disposed on the lateral edges (24a, 24b) of the drilling module and arranged to cooperate with walls of the excavation.
13. Machine de forage selon l'une quelconque des revendications précédentes, caractérisé en ce qu'elle comporte en outre un dispositif (76) de régulation du coefficient d'amortissement des moyens d'amortissement (70). 13. Drilling machine according to any one of the preceding claims, characterized in that it further comprises a device (76) for regulating the damping coefficient of the damping means (70).
14. Machine de forage (10,110,210) selon l'une quelconque des revendications précédentes, dans laquelle ladite machine de forageA drilling machine (10, 110, 210) according to any one of the preceding claims, wherein said drilling machine
(10,110,210) est une fraise dont les organes de coupe (16,116,216) comportent deux paires de tambours qui sont rotatifs autour d'axes de rotation (A,B) parallèles, distincts et perpendiculaires à la direction longitudinale (L) du support ( 12, 112, 212). (10, 110, 210) is a cutter whose cutters (16, 116, 216) comprise two pairs of drums which are rotatable about axes of rotation (A, B) parallel, distinct and perpendicular to the longitudinal direction (L) of the support (12, 112, 212).
EP16767339.1A 2015-09-10 2016-09-08 Drilling machine Active EP3347525B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1558426A FR3041023B1 (en) 2015-09-10 2015-09-10 DRILLING MACHINE COMPRISING A SHOCK ABSORBER
PCT/FR2016/052247 WO2017042496A1 (en) 2015-09-10 2016-09-08 Drilling machine

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EP3347525A1 true EP3347525A1 (en) 2018-07-18
EP3347525B1 EP3347525B1 (en) 2019-07-17

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JP (1) JP6655170B2 (en)
KR (1) KR102337106B1 (en)
CN (1) CN108495966B (en)
AU (1) AU2016319498B2 (en)
CA (1) CA2998309A1 (en)
DE (1) DE202016008569U1 (en)
FR (1) FR3041023B1 (en)
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WO (1) WO2017042496A1 (en)

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Publication number Publication date
CN108495966A (en) 2018-09-04
WO2017042496A1 (en) 2017-03-16
FR3041023B1 (en) 2017-09-29
JP2018528341A (en) 2018-09-27
KR20180053330A (en) 2018-05-21
KR102337106B1 (en) 2021-12-08
SG11201801992QA (en) 2018-04-27
AU2016319498B2 (en) 2021-06-10
US10844570B2 (en) 2020-11-24
FR3041023A1 (en) 2017-03-17
CN108495966B (en) 2021-09-21
US20180305885A1 (en) 2018-10-25
JP6655170B2 (en) 2020-02-26
AU2016319498A1 (en) 2018-04-12
DE202016008569U1 (en) 2018-06-26
EP3347525B1 (en) 2019-07-17
CA2998309A1 (en) 2017-03-16

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