EP3951128B1 - Dispositif de dégagement d'un espace intermédiaire hélicoïdal d'une tarière et procédé pour créer un alésage - Google Patents

Dispositif de dégagement d'un espace intermédiaire hélicoïdal d'une tarière et procédé pour créer un alésage Download PDF

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Publication number
EP3951128B1
EP3951128B1 EP20189666.9A EP20189666A EP3951128B1 EP 3951128 B1 EP3951128 B1 EP 3951128B1 EP 20189666 A EP20189666 A EP 20189666A EP 3951128 B1 EP3951128 B1 EP 3951128B1
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EP
European Patent Office
Prior art keywords
auger
clearing
guide tube
drill
retainer
Prior art date
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Active
Application number
EP20189666.9A
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German (de)
English (en)
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EP3951128C0 (fr
EP3951128A1 (fr
Inventor
Martin Lanzl
Stefan Bachhuber
Ralf Oehme
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.)
Bauer Maschinen GmbH
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Bauer Maschinen GmbH
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Application filed by Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Priority to ES20189666T priority Critical patent/ES2955254T3/es
Priority to EP20189666.9A priority patent/EP3951128B1/fr
Priority to CN202180057030.4A priority patent/CN116113749A/zh
Priority to AU2021319774A priority patent/AU2021319774A1/en
Priority to US18/040,119 priority patent/US11952838B2/en
Priority to PCT/EP2021/071018 priority patent/WO2022028955A1/fr
Priority to BR112022026719A priority patent/BR112022026719A2/pt
Publication of EP3951128A1 publication Critical patent/EP3951128A1/fr
Publication of EP3951128B1 publication Critical patent/EP3951128B1/fr
Publication of EP3951128C0 publication Critical patent/EP3951128C0/fr
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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B12/00—Accessories for drilling tools
    • E21B12/06—Mechanical cleaning devices

Definitions

  • the invention relates to a device for clearing a space between the spirals of an auger, with a holder for holding the device on the mast of a drill, a guide tube which encloses the auger in sections and is mounted on the mount, and a clearing element which engages in the space between the spirals and is rotatable is mounted on the holder about a drilling axis, according to the preamble of claim 1.
  • the invention further relates to a method for creating a hole in the ground with a drilling device, wherein an auger is screwed into the ground to form the hole and then pulled out again, according to the preamble of claim 10.
  • the clearing device has a stationary guide tube on which a clearing plate can be pivoted into an intermediate space in the helix to clear it. Through a coordinated turning and pulling movement of the In this way, any soil material left by the clearing plate can be removed from the space between the spirals.
  • Such a clearing device is, for example, from the DE 34 46 902 A1 out. Furthermore, from the EP 1 081 329 B1 a clearing device with an impeller-like clearing element is known. This impeller-like clearing member meshes with the auger flights to engage in the spaces between the flights and clean them of remaining soil material.
  • a drill with a clearing device in which the clearing element is rotatably mounted around the auger and is driven by a rotary motor.
  • a rotating drive of the clearing element allows it to revolve around the auger and thus free the space between the spirals of remaining soil material with a coordinated pulling movement of the auger.
  • an energy supply via hydraulic lines or electrical lines is necessary for such an arrangement, which is associated with increased effort.
  • the routing of power lines in the area close to the borehole, where a clearing device is basically located, is exposed to the increased risk of damage during operation.
  • the rotary movement of the clearing element by the rotary motor and the pulling movement of the auger must be precisely coordinated, since otherwise there is a risk of damage to the clearing element and the auger.
  • Another clearing device is from the EP 0 744 525 B1 known.
  • This clearing device has a holder with a guide tube firmly attached to it.
  • a broaching device is mounted on an underside of the guide tube via an axial bearing so that it can rotate freely about the drilling axis, so that the broaching device can revolve around the drilling axis.
  • the clearing device For clearing with this device, it is provided that it is first moved to an upper end area of the mast, so that the clearing device can move down due to its own weight when the auger is pulled. As a result, the scraper engaging in the space between the coils can move helically through the space between the coils and thus scrape off the remaining soil material.
  • the intended thrust bearing is not only axial forces but also exposed to significant transverse forces, which affects the functionality and service life of the thrust bearing and the assembly as a whole.
  • the SU 705 099 A1 shows a generic device according to the preamble of claim 1, with a stripping plate which engages in the space between the coils and achieves a good stripping effect only if the coil pitch remains the same.
  • the scraper plate In the event of deviations, such as those caused by manufacturing tolerances in the spiral pitch, the scraper plate must be dimensioned correspondingly smaller, which reduces the clearing success in cohesive soils.
  • the FR 2 609 307 A1 does not show any scrapers that can rotate freely in a guide tube relative to the drilling axis, which leads to a slower clearing of the intermediate space and this only on the upper side of the spiral.
  • the invention is based on the object of specifying a device for clearing a space between the spirals of an auger and a method for this, with which the spaces between the spirals of a drill auger can be cleared out in a simple and reliable manner.
  • the object is achieved on the one hand by a device having the features of claim 1 and on the other hand by a method having the features of claim 10 .
  • Preferred embodiments of the invention are given in the dependent claims.
  • the device according to the invention is characterized in that the guide tube is mounted on the holder so that it can rotate freely about the drilling axis, that the broaching element is fixedly attached to the rotatably mounted guide tube, that the guide tube is fixed axially in the direction of the drilling axis for broaching, and that by a pulling process the auger of the clearing element with the guide tube for clearing the auger can be rotated about the drilling axis.
  • a basic idea of the invention consists in mounting the guide tube, through which the auger penetrates, so that it can rotate freely on the holder. Due to the size of the guide tube, reliable and stable mounting on the holder can be provided.
  • the clearing element is fastened to the rotatably mounted guide tube, so that the clearing element can be freely rotated with the guide tube. Freely rotatable within the meaning of the invention means that no active rotary drive is provided for rotating the clearing element, but the clearing element can perform a rotary movement due to interaction with the screw geometry when pulled.
  • the clearing element can be attached to the guide tube in a detachable and/or adjustable manner.
  • a further aspect of the invention is that for broaching, the guide tube is axially fixed relative to the drilling axis. This can be achieved, for example, in that the holder is fixed or clamped to a mast of a drill.
  • the device is designed so that by pulling the auger, the clearing element, which in the space between the coils the auger engages, with the guide tube is set in rotation about the drilling axis. Due to the auger geometry and in particular the geometry of the auger helix, an axial pulling movement of the auger is converted into a rotary movement of the clearing element together with the guide tube about the drilling axis. In this case, an axial pulling movement and the rotary movement of the clearing element are automatically and passively coordinated with one another. When the auger is pulled, it can rotate to a certain extent or stand still in the circumferential direction.
  • a drill auger can be reliably cleared of remaining soil material with an overall simple and durable construction without a complex control or energy supply of the clearing device.
  • the clearing element has a clearing plate with a receiving slot in which the drill helix engages.
  • the clearing plate With the receiving slot, the clearing plate encloses the drill helix on the top and bottom from the free edge.
  • the clearing plate can be designed in such a way that it extends entirely or over a substantial part of the radial dimension of the drill helix. This ensures that the clearing plate sweeps over the drill helix reliably and scrapes off the soil material.
  • the clearing plate comprises a plate base body on which at least one adjusting plate for forming the receiving slot is adjustably mounted.
  • Two adjusting plates are preferably provided, which form an upper edge and a lower edge of the receiving slot. Due to the adjustability of the adjusting plates on the plate body, a slot width can be freely set and adapted to the respective sheet thickness of the drill helix of an auger.
  • the adjusting plates are preferably made of a particularly wear-resistant material, since they can rest against the drill helix and scrape off the soil material.
  • a screw connection with slotted holes is preferably provided on the positioning plate to hold the at least one positioning plate.
  • the edges of the receiving slot of the broaching element can come into contact with the axially moving auger during broaching operation, so that due to the pitch of the auger helix, a displacement and thus a rotary movement of the broaching element about the drilling axis is effected.
  • a further embodiment of the invention provides that at least one guide roller is rotatably mounted on the clearing element for contact with the spiral of the auger.
  • the at least one guide roller is preferably arranged on the clearing element in such a way that it comes to rest on an underside of the drill helix.
  • the underside of the drill helix is the side opposite the top on which the soil material lies. Since the drill helix in particular is often not completely filled with soil material, a particularly gentle positioning of the guide roller is achieved in this way.
  • the guide roller serves as a kind of cam roller which, together with the drill spiral, forms a kind of cam follower mechanism in order to convert the axial pulling movement of the auger into a rotating orbital movement of the clearing element and the guide tube.
  • the holder has a ring mount on which the guide tube is rotatably mounted and accommodated.
  • the guide tube is therefore rotatably mounted on the other side over the entire circumference, so that both axial forces and transverse forces can be reliably absorbed.
  • the guide tube is held in a detachable and exchangeable manner, so that if the auger is changed, it can be easily adapted to a changed diameter by exchanging the guide tube.
  • a plurality of bearing rollers are arranged on the ring receptacle, with which the guide tube is rotatably mounted about the drilling axis and axially fixed to the drilling axis on the holder.
  • the bearing rollers are mounted on the holder, in particular on an inside of the ring holder, each with a roller axis which is directed radially to the drilling axis.
  • the bearing rollers are designed in particular as bearing rollers, with an upper ring web on the outer circumference of the guide tube resting on the bearing rollers.
  • a lower ring web can also be attached to the outer circumference of the guide roller sleeve.
  • the upper and the lower ring web are spaced axially by an amount which corresponds approximately to the outer diameter of the transversely directed bearing rollers. Bearing rollers arranged in this way are also referred to as tiger rollers.
  • a further advantageous embodiment of the invention is that the ring holder is designed with two swivel arms, which are mounted so that they can swivel between a closed operating position, in which the swivel arms are swiveled together to form the ring holder and are connected to one another via a detachable connecting device, and an open position which the swivel arms are swiveled apart to the side.
  • This allows the ring mount to be opened, so that, for example, the auger can be removed and changed from the side in a simplified manner.
  • swinging open the ring holder when drilling the auger for which a clearing device is not yet required, allows this to be largely removed from the work area. This makes it possible for the clearing device not to prevent the drilling drive from moving downwards along the mast, so that the drilling drive can largely be moved downwards along the mast to the ground.
  • the pivoted pivot arms on the holder can be pivoted together again in a simple manner and firmly connected to one another again with a suitable connecting device, such as a locking bolt.
  • the guide tube can be divided to open.
  • the guide tube can preferably be opened in two half-shells, with each half-shell preferably being held on a swivel arm. If necessary can the half-shells can also be removed from the swivel arms or fixed to the swivel arms in the open state by means of a separate fastening device.
  • Suitable connecting devices such as tension clamps or screw connections, can also be provided on the outer circumference of the guide tube, so that the two half-shells are reliably connected to one another again when the guide tube is closed.
  • the holder it is expedient for the holder to have a carriage guide for displaceably guiding it along the mast of the drilling device and a locking device for fixing the holder to the mast.
  • the holder can have a sliding shoe, with which the holder and the drilling device carriage are slidably mounted along a guide on a mast, in particular a leader.
  • Displacement can take place in any suitable manner, for example by means of an actuating cylinder or a traction cable.
  • clamps can be provided as a locking device, which can be actuated by hand or by power.
  • the invention also includes a drilling device with an undercarriage, an uppercarriage mounted thereon and a mast along which a drilling drive with a driven auger is slidably mounted, the device according to the invention described above being arranged for clearing.
  • the device is arranged in the area of the mast on the drilling device.
  • the drilling device can in particular be a pile drilling device, with the mast being arranged and mounted essentially vertically on a carrier device with an undercarriage and superstructure.
  • the invention includes a method for creating a hole in the ground with the drilling device described above, wherein an auger is screwed into the ground to form the hole and then pulled out again.
  • an auger is screwed into the ground to form the hole and then pulled out again.
  • the auger which can in particular be a so-called endless auger, which essentially extends along the entire length of the mast, soil material is removed, which can be deposited on the helical drill helix.
  • the drilled hole can be filled with a hardenable mass, in particular a concrete suspension, preferably through a core pipe of the auger, in order to form a drilled or foundation pile.
  • a hardenable mass in particular a concrete suspension
  • a device 10 for clearing a space between the helices of an auger (not shown) has a holder 12 with a carriage-like base body 14 .
  • sliding shoes are arranged to form a carriage guide, with which the holder 12 is slidably guided and fixed along a linear guide on a mast, in particular a leader, of a drill.
  • the carriage guide 16 can correspond to the guide on a drill drive on the mast of the drill.
  • the holder 12 On its front side, the holder 12 has a ring receptacle 50 which is usually arranged horizontally during operation and is formed by two swivel arms 52 .
  • the swivel arms 52 are each connected via a swivel joint 56 on the base body 14 and the holder 12 between a closed operating position, which is in shown in the figures, and an open position, in which the pivot arms 52 are each pivoted laterally outwards about the pivot joint 56 .
  • the swivel arms 52 In the operating position, the swivel arms 52 are releasably connected via a connecting device 54 .
  • the connecting device 54 has a vertically directed locking bolt.
  • a guide tube 20 In the closed operating position of the ring receptacle 50, a guide tube 20 is received in it and is mounted so as to be rotatable about a vertically directed drilling axis 5.
  • An inner diameter of the guide tube 20 is adapted to an outer diameter of the auger, not shown, so that the auger is held in the guide tube 20 in a guiding and rotatable manner.
  • the guide tube 20 can itself be divisible into two parts, which is indicated schematically by an axially running parting line 24 on the guide tube 20 .
  • the guide tube 20 can also be held and removed with a hoist with a hook, with retaining eyes 26 being arranged on the upper side of the guide tube 20 for corresponding hooks of the hoist.
  • the guide tube 20 protrudes through the ring receptacle 50, a clearing element 30 having a clearing holder 37 being detachably and adjustably fastened to a lower end of the guide tube 20.
  • a plate base body 34 with a receiving slot 38 is provided on the clearing holder 37 .
  • the receiving slot 38 is designed for laterally receiving a drill helix of the auger.
  • a clearing plate 32 with upper and lower positioning plates 36 is provided on the plate base body 34 in order to adapt to the geometry of the auger.
  • the upper and lower adjusting plates 36 are fastened adjustably via screw connections and corresponding elongated holes in the adjusting plates 36 for adjusting the geometry and the width of the receiving slot.
  • the broaching mount 37 can have a swivel joint, about which the broaching element 30 can be swiveled out of a broaching position in the auger into a release position.
  • the clearing element 30 has a radially directed guide roller 40 which is arranged and designed in such a way that it comes to rest on an underside or an upper side of the drill helix.
  • the guide roller 40 can roll on the drill helix, so that with an axial pulling movement of the auger vertically upwards due to the pitch of the drill helix, a force is exerted in the circumferential direction on the clearing element 30 and thus on the firmly connected guide tube 20 .
  • the guide tube 20 is rotatably mounted about the drilling axis 5, which is usually oriented vertically.
  • the guide tube 20 has two ring ridges 22 on its outside, wherein in the figures 1 and 3 in each case only the upper annular web 22 can be seen.
  • the guide tube 22 rests on radially directed bearing rollers 60 on an inner side of the ring receptacle 50, with the bearing rollers 60 in 4 are shown.
  • two bearing rollers 60 are each arranged on one of the two swivel arms 52 with a radially directed roller axis.
  • the lower ring ridge is spaced axially downwards from the upper ring ridge 22 by an amount which approximately corresponds to the diameter of the bearing rollers 60, so that the guide tube 20 is rotatably but axially fixed in the ring receptacle 50.
  • a recess 28 for ejecting the soil material is provided in a lower region of the guide tube 20 to facilitate ejection of the soil material through the clearing plate 32, which is adapted to the space between the spirals in terms of radial and axial dimensioning.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)

Claims (10)

  1. Dispositif pour le nettoyage d'un espace intermédiaire hélicoïdal d'une vis de forage, avec
    - un support (12) pour le maintien du dispositif (10) sur un mât d'un appareil de forage,
    - un tube de guidage (20) qui entoure la vis de forage à certains endroits et qui est logé au niveau du support (12) et
    - un élément de nettoyage (30) qui s'emboîte dans l'espace intermédiaire hélicoïdal et qui est logé de manière librement rotative autour d'un axe de forage (5) sur le support (12),
    - dans lequel le tube de guidage (20) est logé de manière librement rotative autour d'un axe de forage (5) sur le support (12),
    - dans lequel l'élément de nettoyage (30) est monté de manière fixe sur le tube de guidage (20) logé de manière rotative,
    - dans lequel, pour le nettoyage, le tube de guidage (20) est fixé axialement en direction de l'axe de forage (5) et
    - dans lequel, grâce à un processus de traction de la vis de forage, l'élément de nettoyage (30) peut être mis en rotation avec le tube de guidage (20) autour de l'axe de forage (5) pour le nettoyage de la vis de forage,
    caractérisé en ce que
    l'élément de nettoyage (30) comprend une plaque de nettoyage (32) avec une fente de logement (38) dans laquelle l'hélice de forage s'emboîte.
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    la plaque de nettoyage (32) comprend un corps de base de plaque (34) sur lequel est logée au moins une plaque de réglage (36) pour la formation de la fente de logement (38), dans lequel, de préférence, deux plaques de réglage (36) sont prévues, qui forment une arête supérieure et une arête inférieure de la fente de logement (38).
  3. Dispositif selon l'une des revendications 1 à 2,
    caractérisé en ce que
    sur l'élément de nettoyage (30), est logée, de manière rotative, au moins un rouleau de guidage (40) pour un appui contre une hélice de forage de la vis de forage.
  4. Dispositif selon l'une des revendications 1 à 3,
    caractérisé en ce que
    le support (12) comprend un logement annulaire (50) sur lequel le tube de guidage (20) est logé de manière rotative.
  5. Dispositif selon la revendication 4,
    caractérisé en ce que
    sur le logement annulaire (50) sont disposés plusieurs rouleaux de palier (60) avec lesquels le tube de guidage (20) est logé de manière rotative autour de l'axe de forage (5) et de manière fixe axialement par rapport à l'axe de forage (5) sur le support (12).
  6. Dispositif selon la revendication 4 ou 5,
    caractérisé en ce que
    le logement annulaire (50) est muni de deux bras pivotants (52) qui sont logés de manière pivotante entre une position de fonctionnement fermée dans laquelle les bras pivotants (52) sont rapprochés de manière pivotante pour former le logement annulaire (50) et reliés entre eux par l'intermédiaire d'un dispositif de liaison amovible (54) et une position d'ouverture dans laquelle les bras pivotants (52) sont éloignés latéralement de manière pivotante l'un de l'autre.
  7. Dispositif selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le tube de guidage (20) peut être divisé pour l'ouverture.
  8. Dispositif selon l'une des revendications 1 à 7,
    caractérisé en ce que
    le support (12) comprend un guidage de chariot (16) pour le guidage coulissant le long du mât de l'appareil de forage et un dispositif d'immobilisation pour l'immobilisation du support (12) sur le mât.
  9. Appareil de forage
    avec un chariot inférieur, un chariot supérieur logé sur celui-ci et un mât le long duquel un entraînement de forage est logé de manière coulissante avec une vis de forage entraînée,
    caractérisé en ce que
    un dispositif (10) selon l'une des revendications 1 à 8 est prévu.
  10. Procédé de réalisation d'un forage dans le sol avec un appareil de forage selon la revendication 9,
    dans lequel une vis de forage est enfoncée dans le sol pour la formation du forage puis retiré,
    caractérisé en ce que
    lors de la traction de la vis de forage, un espace intermédiaire hélicoïdal de la vis de forage est nettoyé du matériau du sol résiduel au moyen d'un dispositif (10) selon l'une des revendications 1 à 8.
EP20189666.9A 2020-08-05 2020-08-05 Dispositif de dégagement d'un espace intermédiaire hélicoïdal d'une tarière et procédé pour créer un alésage Active EP3951128B1 (fr)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ES20189666T ES2955254T3 (es) 2020-08-05 2020-08-05 Dispositivo para limpiar un espacio intermedio helicoidal de una barrena de perforación y procedimiento para realizar un sondeo
EP20189666.9A EP3951128B1 (fr) 2020-08-05 2020-08-05 Dispositif de dégagement d'un espace intermédiaire hélicoïdal d'une tarière et procédé pour créer un alésage
US18/040,119 US11952838B2 (en) 2020-08-05 2021-07-27 Device for clearing a helix gap of an auger, and method for making a drilled hole
AU2021319774A AU2021319774A1 (en) 2020-08-05 2021-07-27 Device for clearing a helix gap of an auger, and method for making a drilled hole
CN202180057030.4A CN116113749A (zh) 2020-08-05 2021-07-27 用于清理螺旋钻杆的螺旋间隙的装置和用于完成钻孔的方法
PCT/EP2021/071018 WO2022028955A1 (fr) 2020-08-05 2021-07-27 Dispositif permettant de nettoyer un espace en spirale d'une vis sans fin et procédé permettant de produire un trou foré
BR112022026719A BR112022026719A2 (pt) 2020-08-05 2021-07-27 Dispositivo para limpeza de um espaço intermediário espiral de uma broca e método para produzir uma perfuradora

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20189666.9A EP3951128B1 (fr) 2020-08-05 2020-08-05 Dispositif de dégagement d'un espace intermédiaire hélicoïdal d'une tarière et procédé pour créer un alésage

Publications (3)

Publication Number Publication Date
EP3951128A1 EP3951128A1 (fr) 2022-02-09
EP3951128B1 true EP3951128B1 (fr) 2023-06-07
EP3951128C0 EP3951128C0 (fr) 2023-06-07

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EP20189666.9A Active EP3951128B1 (fr) 2020-08-05 2020-08-05 Dispositif de dégagement d'un espace intermédiaire hélicoïdal d'une tarière et procédé pour créer un alésage

Country Status (7)

Country Link
US (1) US11952838B2 (fr)
EP (1) EP3951128B1 (fr)
CN (1) CN116113749A (fr)
AU (1) AU2021319774A1 (fr)
BR (1) BR112022026719A2 (fr)
ES (1) ES2955254T3 (fr)
WO (1) WO2022028955A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4296467A1 (fr) 2022-06-22 2023-12-27 BAUER Maschinen GmbH Dispositif et procédé de brochage d'un espace intermédiaire d'hélice d'une hélice de forage

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DE102017119377B3 (de) * 2017-08-24 2018-08-16 Karl Schnell Gmbh & Co. Kg Reinigungsvorrichtung und Verfahren zur Reinigung einer Förderschnecke
CN111236862A (zh) * 2020-03-06 2020-06-05 重庆卓典建设工程有限公司 桩机
EP4080012B1 (fr) * 2021-04-22 2024-05-22 ABI Anlagentechnik-Baumaschinen-Industriebedarf Maschinenfabrik und Vertriebsgesellschaft mbH Machine de construction pour le génie civil spécial

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CN116113749A (zh) 2023-05-12
AU2021319774A1 (en) 2023-03-02
WO2022028955A1 (fr) 2022-02-10
ES2955254T3 (es) 2023-11-29
EP3951128C0 (fr) 2023-06-07
US11952838B2 (en) 2024-04-09
EP3951128A1 (fr) 2022-02-09
BR112022026719A2 (pt) 2023-02-14
US20230265720A1 (en) 2023-08-24

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