EP1477633B1 - Procédé et dispositif pour le travail du sol - Google Patents

Procédé et dispositif pour le travail du sol Download PDF

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Publication number
EP1477633B1
EP1477633B1 EP04009245A EP04009245A EP1477633B1 EP 1477633 B1 EP1477633 B1 EP 1477633B1 EP 04009245 A EP04009245 A EP 04009245A EP 04009245 A EP04009245 A EP 04009245A EP 1477633 B1 EP1477633 B1 EP 1477633B1
Authority
EP
European Patent Office
Prior art keywords
speed
drilling
drilling rod
control device
feed rate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP04009245A
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German (de)
English (en)
Other versions
EP1477633A2 (fr
EP1477633A3 (fr
Inventor
Markus Mayr
Markus Riepold
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
Original Assignee
Bauer Maschinen GmbH
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 Bauer Maschinen GmbH filed Critical Bauer Maschinen GmbH
Publication of EP1477633A2 publication Critical patent/EP1477633A2/fr
Publication of EP1477633A3 publication Critical patent/EP1477633A3/fr
Application granted granted Critical
Publication of EP1477633B1 publication Critical patent/EP1477633B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/02—Automatic control of the tool feed
    • E21B44/06—Automatic control of the tool feed in response to the flow or pressure of the motive fluid of the drive
    • 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
    • E21B44/00—Automatic control systems specially adapted for drilling operations, i.e. self-operating systems which function to carry out or modify a drilling operation without intervention of a human operator, e.g. computer-controlled drilling systems; Systems specially adapted for monitoring a plurality of drilling variables or conditions
    • E21B44/02—Automatic control of the tool feed

Definitions

  • the invention relates to a method for tillage according to the preamble of claim 1 and an associated apparatus according to the preamble of claim 10.
  • a method for automatically controlling a drilling device in which the rotation of a drilling or expansion tool or drill pipe is determined and the feed is controlled by the determined value. It is provided that the falling below a minimum speed or suspension of the rotation of the drill pipe or the drilling or expansion tool is detected by a speed sensor.
  • US 6,116,819 describes a method for operating a drilling auger in which, during penetration of the auger, at least one of the auger turning rate, auger penetration rate, and torque applied to the auger and depending on soil conditions and auger geometry a computer is controlled, which is intended to keep the screw flights loaded with soil, which comes from the area of the tip of the screw.
  • EP 0 517 329 A1 discloses a drilling rig for producing walls of adjoining piles having at least two augers.
  • the object of the present invention is to provide a method and a device for soil cultivation, which allow a continuous and particularly efficient and reliable drilling.
  • a drill pipe to which at least one tool is attached by means of a rotary drive at a speed about a rotation axis in rotation the drill pipe simultaneously retracted by means of a feed drive at a feed rate in the direction of the axis of rotation in a bottom area, the Speed of the drill string determined and a control device reduces the feed rate at a decrease in the speed of the drill string.
  • a basic idea of the invention is to automatically control the feed rate as a function of the rotational speed of the drill pipe by a control device.
  • the controller reduces the feed rate of the drill string as the rotational speed of the drill string decreases due to an increase in forces between the drilling tool and a wall or floor of the floor area. These forces may be frictional, shearing or cutting forces, for example.
  • the reduction of the feed rate results in a reduction of the pressing forces of the drilling tool on the bottom of the ground area and thus a reduction of the forces that counteract the rotational movement of the drill string. This results in a renewed increase in the rotational speed of the drill string and a solid drilling of the drill pipe can thus be effectively prevented.
  • the feed rate can also be increased again by the control device.
  • the determined speed is preferably compared by the control device with the preset desired value and the feed rate is preferably controlled by means of a PID controller of the control device.
  • the preset target value corresponds to the optimum cutting speed for the soil to be processed.
  • a particularly preferred development of the invention is characterized in that the determined rotational speed of the drill string is compared in the control device with a predetermined threshold value and falls below the threshold value, the feed rate is reduced.
  • the threshold value can be a single value or a value range. As a result, an allowable speed range can be provided, within which no control of the feed rate takes place. An intervention of the PID controller can then take place when falling below the threshold value of the speed.
  • the comparison of the determined speed with the predetermined threshold value preferably takes place in the form of a subtraction.
  • the feed rate is controlled so that the drill pipe is operated at least with a predetermined minimum target speed.
  • the minimum target speed is dimensioned so that a sedimentation of a suspension located in the bottom area is reliably counteracted.
  • a suspension can be introduced into the soil area or produced in it for the production of foundation elements.
  • the drilling tool is designed so that it continuously circulates the suspension. The minimum target speed can then be calculated so that the circulation prevents sedimentation of the suspension.
  • the speed could be determined by means of encoders, in particular high-precision electronic encoders. This makes it possible to use the speed directly as a manipulated variable for the control of the feed rate and allows a particularly simple process control.
  • a hydraulic rotary motor is used as the rotary drive, to which a hydraulic fluid is supplied.
  • a hydraulic rotary motor makes a particularly robust Operation of the drilling tool.
  • a pressure of the hydraulic fluid supplied to the hydraulic rotary motor is measured and that the rotational speed is calculated by the control device from the determined pressure by means of a calculation rule. This allows a particularly fast and timely determination of the speed and the deviation of the speed from the setpoint even in the presence of low speeds. Furthermore, even small deviations between the speed and the setpoint can be reliably determined.
  • the calculation rule is designed so that it provides a relationship between the speed and the pressure at the rotary drive.
  • the calculation rule is adapted automatically or in certain periods by an operator.
  • the relationship between speed and pressure depends on the ambient conditions, such as outside temperature, temperature of the hydraulic fluid and resulting friction torque of the rotary drive, the ground conditions and the type of tool and the rotary drive.
  • An adjustment can be made by comparing the speed determined by means of encoders with the determined from the calculation rule speed.
  • the control device it is particularly preferred for the control device to determine further parameters, such as the outside temperature, the temperature of the hydraulic fluid, the friction torque of the rotary drive and / or the wear state of the rotary drive, by means of which the calculation rule is adapted. This allows a particularly accurate determination of the speed from the pressure.
  • a hydraulic motor is used as a feed drive.
  • a hydraulic motor can be designed, for example, as a rotary motor which advances and retracts the drill string and the rotary drive via a cable pull mechanism.
  • hydraulic cylinders can be used. It is also preferred to regulate the feed rate, in particular its deceleration, by which a regulation of a flow rate of hydraulic fluid through the hydraulic motor is effected. This allows a particularly simple and reliable control of Feed speed.
  • it is advantageous that at least two, in particular three, drill rods are arranged directly adjacent to one another, that the at least two drill pipes are simultaneously rotated and that the at least two drill pipes are retracted into the soil area at the same feed rate.
  • the at least two drill pipes are preferably arranged parallel to one another, and the drilling tools preferably have overlapping drill cross sections.
  • the control device controls the feed rate of the drill pipe in the same way and synchronously.
  • each of the drill pipes has its own rotary drive.
  • the speed of each of the at least two drill pipe can be determined and based on the control of the feed rate. However, it is particularly preferred that only the speed of external drill rods is determined and processed by the control device.
  • Underlying drill pipe can be understood as such drill pipe having only an immediately adjacent drill pipe. Since a speed drop occurs first due to a greater engagement in the ground on the outer linkages, such a procedure reliably reduces the hard drilling of all drill pipes.
  • drilling tools basically all known drilling tools can be used.
  • it is particularly advantageous for the drilling tool to have drilling spirals and / or mixing paddles. The use of mixing paddles is particularly advantageous if a suspension is introduced and / or produced in the bottom area. The mixing paddles can then serve to prevent sedimentation of the suspension.
  • the method according to the invention can be used in particular in all known drilling methods. It is particularly preferred that it is in Verdrängerbohren, endless screw drilling and / or in mixed-in-place processes for the production of foundation elements.
  • Displacement drilling is to be understood as a drilling process in which soil material is displaced out of the soil area with simultaneous compaction.
  • Mixed-in-place methods can be understood to mean those techniques in which a liquid is introduced into the soil and the liquid in the soil area is mixed with the pending soil to form a self-hardening suspension.
  • the device according to the invention is used to carry out the method described above.
  • FIG. A An apparatus for carrying out the method according to the invention is shown schematically in FIG. A designed as a hydraulic rotary drive 20 rotatably drives a drill pipe 10 at.
  • the rotary drive 20 is supplied via a first supply line 21 hydraulic fluid.
  • a drilling tool 11 designed as a drilling screw is attached in a rotationally fixed manner.
  • the drill string 10 enters at its lower end in a bottom portion 1, where by the action of the drilling tool 11, a borehole is formed.
  • the rotary drive 20 and the drill string 10 are arranged on a mast 4 slidably via a cable pull mechanism 33 and a cable 34 shown only schematically.
  • the cable mechanism 33 serves the propulsion of the drill string in the direction of its axis of rotation.
  • the mast 4 is attached to a construction vehicle 3 shown schematically.
  • the cable pull mechanism 33 is driven by means of a feed drive 30 arranged on the construction vehicle 3, which is likewise designed as a hydraulic rotary motor.
  • the feed drive 30 is supplied via a second supply line 31 hydraulic fluid.
  • the pressure in the first supply line 21 of the rotary drive 20 is determined via a pressure sensor 41 and the measured value is fed via a measured value line 44 to a control device 40.
  • the control device 40 compares the determined pressure with a desired value, which is supplied to the control device via a setpoint line 45. From this, the control device 40 calculates a control value which is provided via a control value line 46 to a control valve 32 in the second supply line 31 of the feed drive 30.
  • the controller 40 detects an increase in the pressure in the first supply line 21 above the target value, which corresponds to slowing the rotational speed below the target value, the controller 40 decreases the flow rate of hydraulic fluid through the second supply line 31 by operating the control valve 32.
  • FIG. 2 Another example of an apparatus for carrying out a method of tillage is shown in FIG. Components with the same function are denoted by the same reference numerals as in Fig. 1 and will not be described in detail at this point.
  • the exemplary embodiment in FIG. 2 differs from that in FIG. 1 only in that the control device 40 is not supplied with the pressure in the first supply line 21 as a measured value via the measured value line 46, but rather with the rotational speed of the drill pipe 10. The rotational speed becomes direct taken up by a rotary shaft 42 arranged on the drill pipe 10.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (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. Procédé pour le travail du sol,
    - dans lequel une tige de forage (10) sur laquelle est montée au moins un outil (11) est mise en rotation autour d'un axe de rotation et avec une vitesse de rotation, au moyen d'un entraînement rotatif (20) conformé en moteur hydraulique rotatif,
    - la ligne de forage (10) est simultanément enfoncée dans une zone de sol (1) avec une vitesse d'avance dans la direction de l'axe de rotation, au moyen d'un entraînement (30) d'avance,
    - la vitesse de rotation de la ligne de forage est relevée, et
    - un dispositif de commande (40) réduit la vitesse d'avance en cas de diminution de la vitesse de rotation de la ligne de forage (10),
    caractérisé
    en ce qu'une pression d'un fluide hydraulique fourni au moteur hydraulique rotatif est mesurée au moyen d'un capteur de pression (41), et
    en ce que la vitesse de rotation est calculée par le dispositif de commande (40) à partir de la pression relevée au moyen d'un programme de calcul qui est adapté automatiquement à des intervalles de temps déterminés ou sur commande d'un opérateur.
  2. Procédé selon la revendication 1, caractérisé en ce que la vitesse de rotation relevée de la tige de forage (10) est comparée à une valeur de seuil prédéterminée dans le dispositif de commande (40) et, si on passe au-dessous de la valeur de seuil, la vitesse d'avance est régulée de telle sorte que la ligne de forage (10) soit entraînée avec au moins une vitesse de rotation minimale de consigne prédéterminée.
  3. Procédé selon la revendication 2, caractérisé en ce que la vitesse de rotation minimale de consigne est choisie de manière à lutter de manière fiable contre une sédimentation d'une suspension présente dans la zone de sol (1).
  4. Procédé selon l'une quelconque des revendications 1 à 3, caractérisé en ce que le dispositif de commande (40) relève d'autres paramètres comme la température extérieure, la température du fluide hydraulique et/ou l'état d'usure de l'entraînement rotatif, paramètres au moyen desquels le programme de calcul est adapté.
  5. Procédé selon l'une quelconque des revendications 1 à 4, caractérisé en ce que l'on utilise comme entraînement d'avance (30) un moteur hydraulique et en ce que la régulation de la vitesse d'avance est provoquée par une régulation d'un débit du fluide hydraulique à travers le moteur hydraulique.
  6. Procédé selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'au moins deux, en particulier trois, lignes de forage (10) sont placées directement les unes à côté des autres, en ce que les lignes de forage (10) au nombre d'au moins deux sont mises simultanément en rotation et en ce que les lignes de forage (10) au nombre d'au moins deux sont enfoncées simultanément dans la zone de sol (1) avec la même vitesse d'avance.
  7. Procédé selon la revendication 6, caractérisé en ce que la vitesse de rotation de lignes de forage extérieures (10) est relevée.
  8. Procédé selon l'une quelconque des revendications 1 à 7, caractérisé en ce que l'outil (11) comprend des lames de forage, des vis de forage et/ou des pales mélangeuses.
  9. Procédé selon l'une quelconque des revendications 1 à 8, caractérisé en ce qu'il est utilisé lors d'un forage à déplacement, d'un forage à pas vis sans fin et/ou d'un procédé de mélange sur site pour fabriquer des éléments de fondation.
  10. Dispositif pour le travail du sol par un procédé selon l'une quelconque des revendications 1 à 9, avec
    - une ligne de forage (10) sur laquelle est monté au moins un outil (11),
    - un entraînement rotatif (20) conformé en moteur hydraulique rotatif pour entraîner en rotation la ligne de forage (10),
    - un entraînement d'avance (30) pour enfoncer la ligne de forage (là) dans une zone de sol (1), et
    - un dispositif de commande (40) pour commander automatiquement la vitesse d'avance de la ligne de forage (10) en fonction de la vitesse de rotation de la ligne de forage (10),
    caractérisé
    en ce qu'un capteur de pression (41) est prévu pour mesurer la pression d'un fluide hydraulique fourni au moteur hydraulique rotatif, qui est en liaison avec le dispositif de commande, et
    en ce que le dispositif de commande est conformé pour calculer la vitesse de rotation à partir de la pression mesurée, par un programme de calcul adaptable.
EP04009245A 2003-05-08 2004-04-19 Procédé et dispositif pour le travail du sol Expired - Lifetime EP1477633B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10320662 2003-05-08
DE10320662A DE10320662A1 (de) 2003-05-08 2003-05-08 Verfahren und Vorrichtung zur Bodenbearbeitung

Publications (3)

Publication Number Publication Date
EP1477633A2 EP1477633A2 (fr) 2004-11-17
EP1477633A3 EP1477633A3 (fr) 2004-12-08
EP1477633B1 true EP1477633B1 (fr) 2006-06-21

Family

ID=33016327

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04009245A Expired - Lifetime EP1477633B1 (fr) 2003-05-08 2004-04-19 Procédé et dispositif pour le travail du sol

Country Status (4)

Country Link
US (1) US7134511B2 (fr)
EP (1) EP1477633B1 (fr)
DE (2) DE10320662A1 (fr)
ES (1) ES2266949T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3819434B1 (fr) 2019-11-06 2022-02-16 BAUER Maschinen GmbH Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10443306B2 (en) * 2014-03-03 2019-10-15 Hpm—Hydraulic Performance Machines Srl Drilling machine with optimized tool unloading system
US10350608B2 (en) 2016-05-03 2019-07-16 Vermeer Manufacturing Company In-feed systems for chippers or grinders, and chippers and grinders having same
US11071986B2 (en) 2017-08-15 2021-07-27 Vermeer Manufacturing Company Infeed systems for chippers or grinders, and chippers and grinders having same
EP3698931A1 (fr) * 2019-02-20 2020-08-26 Hilti Aktiengesellschaft Dispositif de meche creuse doté d'un affichage et procédé et système de détermination et d'affichage de la qualité pour un nettoyage de trou
CN118730621A (zh) * 2024-09-02 2024-10-01 四川省禾力建设工程检测鉴定咨询有限公司 一种建筑工程质量检测用混凝土取芯装置

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FR2642791A1 (fr) * 1989-02-08 1990-08-10 Soletanche Dispositif de mesure de parametres de forage
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US6637522B2 (en) * 1998-11-24 2003-10-28 J. H. Fletcher & Co., Inc. Enhanced computer control of in-situ drilling system
DE19924200B4 (de) * 1999-05-27 2004-07-15 Wolfgang Schmidt E.K. Drehzahl-Vorschubregelung
US6293359B1 (en) * 2000-06-05 2001-09-25 Cubex Limited Pressure control of a drilling apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3819434B1 (fr) 2019-11-06 2022-02-16 BAUER Maschinen GmbH Procédé et dispositif de fraisage de paroi de fente permettant de créer une fente fraisée dans le sol

Also Published As

Publication number Publication date
EP1477633A2 (fr) 2004-11-17
EP1477633A3 (fr) 2004-12-08
US7134511B2 (en) 2006-11-14
US20040222017A1 (en) 2004-11-11
ES2266949T3 (es) 2007-03-01
DE10320662A1 (de) 2004-12-02
DE502004000803D1 (de) 2006-08-03

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