EP3135856A1 - Raccord a baïonnette destine a accoupler des extremites de tubes de forage, tiges de forage ou tiges d'ancrage - Google Patents

Raccord a baïonnette destine a accoupler des extremites de tubes de forage, tiges de forage ou tiges d'ancrage Download PDF

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Publication number
EP3135856A1
EP3135856A1 EP16450020.9A EP16450020A EP3135856A1 EP 3135856 A1 EP3135856 A1 EP 3135856A1 EP 16450020 A EP16450020 A EP 16450020A EP 3135856 A1 EP3135856 A1 EP 3135856A1
Authority
EP
European Patent Office
Prior art keywords
bayonet
connector
truncated cone
connection
joint
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
EP16450020.9A
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German (de)
English (en)
Other versions
EP3135856B1 (fr
Inventor
Karl BÖHM
Dieter GLANTSCHNEGG
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.)
DSI Underground Austria GmbH
Original Assignee
Dywidag Systems International GmbH Austria
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Filing date
Publication date
Application filed by Dywidag Systems International GmbH Austria filed Critical Dywidag Systems International GmbH Austria
Priority to PL16450020T priority Critical patent/PL3135856T3/pl
Publication of EP3135856A1 publication Critical patent/EP3135856A1/fr
Application granted granted Critical
Publication of EP3135856B1 publication Critical patent/EP3135856B1/fr
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Anticipated expiration legal-status Critical

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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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/02—Couplings; joints
    • E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
    • E21B17/046—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches
    • E21B17/0465—Couplings; joints between rod or the like and bit or between rod and rod or the like with ribs, pins, or jaws, and complementary grooves or the like, e.g. bayonet catches characterised by radially inserted locking elements

Definitions

  • the present invention relates to a bayonet connection for coupling ends of drill pipes, boring bars or anchor rods, which has a bayonet connector and a bayonet joint, which bayonet connector is provided with two 180 ° spaced bayonet pins, which bayonet pins formed in the bayonet sleeve, essentially L -shaped bayonet grooves are inserted and fixed in a substantially horizontally disposed leg of the L by turning, wherein the bayonet grooves have a relation to a diameter of the bayonet pin enlarged diameter and a depth of insertion of the bayonet plug is limited in the bayonet socket by an opening formed in the bayonet socket axial stop.
  • the bayonet pin is usually worn relatively quickly in an excessive tensile stress or load in the radial direction, in particular knocked off or demolished, which can lead to a not inconsiderable risk to people and material in the breakage of such a bayonet connection.
  • AT 296 920 B is a drill, in particular for drilling in soil or loose rock removable, in which the drill bit can be ejected by means of a rod from the drill bit.
  • DE 101 61 187 A1 is to be taken from a rock drill head, which is axially guided over a guide surface, with a drill rod with at least one radially projecting flight wing releasably connectable via an associated bayonet-shaped connecting groove.
  • a bayonet connection is described in which the bayonet pin is dimensioned such that it has a significantly smaller diameter than the associated bayonet groove, so that it does not directly come into contact with the edges of the bayonet groove when producing a bayonet connection.
  • a bayonet bolt either by tensile stress or radial stress in contact with at least one wall of the pipes or pipe elements to be connected, whereby the previously described danger of tearing or knocking off the bayonet pin is in turn given.
  • the present invention now aims to provide a bayonet joint in which the bayonet pin is held substantially free of any compressive or tensile stress both in the axial and in the radial direction, and with which Furthermore, it is possible to form a connection of ends of drill pipes, boring bars or anchor rods, which allows a completely straight drilling even to a great depth.
  • the bayonet joint according to the invention is characterized essentially in that the axial stop is formed as a conical surface or truncated cone surface with a guided through the truncated cone passage, which axial stop cooperates with a substantially corresponding conical surface or ball butt surface with a guided through the ball stub through opening and that at least one of the cooperating conical or truncated cone lateral surfaces is formed with a corresponding surface roughness.
  • the axial stop is designed as a conical surface or frustum surface with a guided through the truncated cone passage, a centering of the tubes to be joined together is automatically ensured and, moreover, can be ensured by the exact dimensioning of the axial stopper as a conical surface that the bayonet pins in the axial Direction are free from any tensile or pressurization by being positioned due to an exact positioning of the conical or truncated cone surface in the center of the diameter of the bayonet groove and at a predetermined height with respect to the bayonet pins.
  • profiled hollow bars and profiled bars are understood, which may optionally have either a right-handed or a left-hand thread.
  • the bayonet connection is formed so that both cooperating conical or truncated cone surfaces are formed with different coordinated surface roughness, it is possible to form a rich fit of the two truncated cone lateral surfaces to each other, so that a rotation of the truncated cone lateral surfaces to each other is substantially prevented and thereby the load on the bayonet pin in the L-shaped groove is minimized or the bayonet pins are kept free at all of a radial load.
  • the bayonet closure is formed so that the roughened conical or truncated cone surfaces have a grainy or streaky, in particular from a tip to a base of the cone or truncated cone running roughening, a full seat between the ensures both co-operating conical or truncated cone lateral surfaces, whereby a mutually rotating or against each other twisting of the two cooperating conical or truncated cone lateral surfaces is substantially avoided.
  • a meshing or interlocking of the two cooperating conical or truncated cone surfaces is provided in the manner of a meshing of gears, with which training a spin or Unintentional twisting of the conical or truncated cone lateral surfaces during a rotary drilling or a rotary impact drilling is largely prevented.
  • the bayonet pin in the L-shaped bayonet groove thus can be kept completely free of stress, both in the radial and in the axial direction.
  • the load freedom in the axial direction results here from the cooperating conical or truncated cone lateral surfaces, which are dimensioned so that the bayonet pin is kept free of a stop on the side walls of the L-shaped groove.
  • a holding in the radial direction without stress on the bayonet pin succeeds by a locking engagement of the stripy roughening of the cooperating conical or truncated cone lateral surfaces, whereby a load-free freedom of the bayonet pins is ensured both in the axial and in the radial direction.
  • ends of drill pipes, boring bars or anchor rods which are usually subjected to a high load during the drilling of boreholes, in particular during a rotary or rotationally impacting drilling, are provided without having to fear that a bayonet pin is torn or damaged.
  • the invention is further developed such that the roughness of the axial abutment surfaces of the bayonet joint and the bayonet connector is different, in particular the roughness of the bayonet joint about twice as big as that of the bayonet plug is.
  • the roughness of the bayonet joint between 0.8 microns and 6.3 microns and is designed in particular as a rounded roughness and those of the bayonet plug between 3.2 microns and 25 microns and is designed in particular as a scanty roughness, a spin or unintentional twisting of the bayonet plug in the bayonet sleeve is also kept in safety during operation with security.
  • the bayonet connection is chosen so that the diameter of the bayonet is 3% to 5% larger than the diameter of the bayonet pin, it is also possible to ensure that the bayonet pin free of an impact on the Bayonet grooves can be kept in the connected state, so that a tearing of the same even during a rotary impact drilling, both due to radial as well as in consequence of axial loads on the bayonet plug and in the wake of the bayonet sleeve safely withhold is.
  • the bayonet pins can be kept free by the exact dimensioning and arrangement of the cooperating conical surfaces on the one hand by axial load and on the other hand, however, ensure that the connection safely and reliably holds, without the unintentional leakage of the bayonet pin from the grooves is to be feared.
  • the training is such that a height of the cone or the truncated cone is selected so that the bayonet pin is arranged in its locking position in the axial direction substantially centrally in the bayonet groove.
  • a height of the cone or truncated cone is selected so that the bayonet pin is arranged in the locking position in the axial direction substantially centrally in the bayonet, it is ensured that especially in a rotary impact drilling acting in the axial direction, intermittently applied forces not to a shock load lead the bayonet pin so that they are knocked off or torn due to the applied shocks and in particular due to the axial load.
  • the bayonet pin is kept substantially free of any axial loads even during drilling, in particular rotary impact drilling.
  • the bayonet connection is formed so that at least one sealing ring and / or guide ring is inserted into at least one corresponding recess in the bayonet connector in a range between bayonet pin and cone or truncated cone, it is further ensured that the Ingress of contaminants in the area of co-operating truncated cones of the male and bayonet sleeves is certainly withheld.
  • the at least one sealing ring and / or guide ring serves to improve the fit of the bayonet straightener in the bayonet sleeve, whereby, despite the necessary gap widths - bolt / sleeve, the connection does not permit a deviation in direction.
  • the invention is further developed such that the bayonet connector encompassing Ring in abutment on a free end of the bayonet sleeve or this is provided across.
  • the bayonet connector supporting ring is provided in abutment against a free end of the bayonet sleeve, in particular an escape of the bayonet pin from the bayonet grooves is prevented even with an unintentional twisting of sleeve and plug against each other, so that the connection in particular at corresponding resulting forces through the support ring is secured.
  • such a ring or support ring is detachable, in particular screwed on or fixed to the bayonet fitting fitting. If any solution of the connection between the interconnected pipes, rods or the like. Should be prevented, as the invention also provides, the support ring be fixed by pressing on the outer circumference of the bayonet connector, in which case a substantially permanent connection between the bayonet connector and bayonet sleeve is provided.
  • a bayonet connection 1 is shown, with which ends of two drill pipes are connected together.
  • the bayonet connection 1 in this case has a bayonet connector 2 and a bayonet socket 3.
  • the bayonet connector 2 further comprises two bayonet pins 4 spaced apart by 180 °, which bayonet pins 4 in formed in the bayonet joint 3, in Fig. 1 not apparent, essentially L-shaped bayonet grooves 5 are introduced.
  • the bayonet sleeve 3 is in this case formed so that it has a passage opening 6 through which, for example, a drill rod, not shown, can be passed or drill cuttings can be removed during drilling.
  • the passage opening 6 in the illustration of Fig. 1 is here formed over the major part of its length with a thread 8 and points in an area immediately in front of a truncated cone surface 7, only one passage opening 6, which has a reduced diameter relative to the thread 8, on.
  • the bayonet connector 2 is shown in partial perspective view. As in Fig. 2 it can be seen, the frustoconical surface 9 of the bayonet 2 is provided with a plurality of stripy roughening 11, which can cooperate with corresponding stripy roughening 11, the truncated cone surface 7 of the bayonet joint 3.
  • the inclination of the cone or the truncated cone 9 of Fig. 2 is about 45 °, with flatter or slightly steeper inclinations seem possible, however, it has proved to be advantageous that the inclination of the cone is about 45 °.
  • the bayonet pins 4 are not 100% cylindrical in this case, but are slightly bevelled or rounded in the region of their free ends to, if they, as in Fig. 1 can be seen protruding slightly over the bayonet joint 3, not to be knocked off by a contact on the borehole wall.
  • Fig. 3 which are essentially those of Fig. 2 corresponds to only the roughening 11 of the truncated conical surfaces 9 no grainy roughening 11 but a grained roughening 11, wherein the grain size of the roughening selected is that that of the bayonet connector 2 is finer than that of the bayonet joint 3, to ensure a safe entry of the grains into corresponding recesses in the bayonet joint 3.
  • the grain in the bayonet spacer 2 is about half as large as that of the bayonet sleeve 3.
  • a bayonet connection 1 is shown in the assembled state, in this representation in an analogous manner to Fig. 1 the grain of the conical surface areas 7 and 9 is not shown.
  • Fig. 4 In contrast to the representation of Fig. 1 are the in Fig. 4 in a dashed manner, the L-shaped bayonet grooves 5 are shown to show how the bayonet pins 4 can be inserted into the bayonet sleeve 3 and subsequently into a closed position, which in Fig. 4 is shown schematically by the end 12 of the horizontal portion of the L-shaped leg of the bayonet groove 5, to arrive.
  • a support ring 13 is set so that it is arranged over a free end 14 of the bayonet joint 3.
  • the support ring 13 is in this case releasably fixed and on the one hand unintentional leakage of the bayonet pin 4, even if it comes to a rotation of the bayonet pin 4 in the L-shaped groove 5, prevent, and on the other hand provide a further assurance of the connection 1. Finally, it is possible by the provision of a support ring 13 even with application of massive impingements in the axial direction, the bayonet pin 4 in the axial direction not to burden, so that a knocking it is at least avoided.
  • the bayonet grooves 5 are about 3% to 5% larger in diameter than the bayonet pins 4, these are arranged in the interior of the grooves 5 so that they do not come to any side wall of the grooves 5 in abutment, so that the bayonet pins 4 are kept free of any application in the axial or radial direction even under load of the bayonet connection 1 in the axial and / or radial direction.
  • the axial loading is in this case prevented by the exact interaction of the two conical surface areas 7 and 9 and the radial load is avoided by the surface contouring of the conical surface with streaky or grainy roughening 11, so that a mutually rotating the conical surface 7, 9 is impossible.
  • FIG. 5 in which the reference numerals of Fig. 1 to 4 as far as possible, the connection of two solid rod anchor rods by means of a bayonet connection 1 is shown.
  • An end region 15 of the solid rod anchor rod 16 designed as a bayonet connector 2 is in this case designed as a conical surface which has striped roughnesses 11.
  • the conical surface formed as an end portion 15 cooperates with a complementary surface of a second solid rod anchor rod, which complementary surface is provided in a formed as a bayonet socket 3 end portion of the second full-rod anchor rod.
  • Adjacent to the conical surface 15 are also in the formation of Fig. 5 two sealing rings 10 inserted into the outer circumference of the anchor rod 16.
  • two bayonet pins 4 are provided on the anchor rod 16, which can be connected for example by welding to the anchor rod 16.
  • the bayonet pins 4 are in, not apparent, substantially L-shaped bayonet grooves 5, inserted and fixed by turning to about a 1 ⁇ 4 circle in the direction of arrow 17 in the L-shaped bayonet groove 5.
  • the bayonet groove 5 in this case, as well as in the case of the connection of pipes over the bayonet pin 4 by about 5% larger diameter, so that the bayonet pin 4 is inserted with clearance in the bayonet groove 5.
  • a knocking off the same by axial or radial stress is in any case avoided by the interaction with the roughened conical surface 15 and the exact height of the conical surface 15 during use.
  • a plurality of sealing rings 10 may be provided, the contours of bayonet 2 and bayonet joint 3 may be different in their interior, the angle of inclination of the conical surface or truncated cone surface 7, 9 freely selected in a certain range between 35 ° and 50 ° 45 ° is preferred, the bayonet grooves 5 can be selected in an envisaged percentage range between 3% and 5% larger than the bayonet pins 4 and finally the support ring 13 can be fixed to both the bayonet connector 2 and the bayonet joint 3 the bayonet joint 3 to be determined across.

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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)
EP16450020.9A 2015-08-31 2016-08-24 Raccord à baïonnette destiné à accoupler des extrémités de tubes de forage, tiges de forage ou tiges d'ancrage Active EP3135856B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16450020T PL3135856T3 (pl) 2015-08-31 2016-08-24 Złącze bagnetowe do łączenia końców rur wiertniczych, żerdzi wiertniczych lub żerdzi kotwowych

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATGM259/2015U AT15014U1 (de) 2015-08-31 2015-08-31 Bajonettverbindung zur Kopplung von Enden von Bohrrohren, Bohrstangen oder Ankerstangen

Publications (2)

Publication Number Publication Date
EP3135856A1 true EP3135856A1 (fr) 2017-03-01
EP3135856B1 EP3135856B1 (fr) 2018-03-21

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Application Number Title Priority Date Filing Date
EP16450020.9A Active EP3135856B1 (fr) 2015-08-31 2016-08-24 Raccord à baïonnette destiné à accoupler des extrémités de tubes de forage, tiges de forage ou tiges d'ancrage

Country Status (3)

Country Link
EP (1) EP3135856B1 (fr)
AT (1) AT15014U1 (fr)
PL (1) PL3135856T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110122363A (zh) * 2019-06-17 2019-08-16 内蒙古自治区农牧业科学院 一种羊脚标
CN111140181A (zh) * 2020-03-21 2020-05-12 山东源运通矿山装备科技有限公司 钎杆连接钻尾
CN111794694A (zh) * 2020-07-18 2020-10-20 邹城兖矿泰德工贸有限公司 连接器
CN113674634A (zh) * 2021-07-13 2021-11-19 深圳市雷凌显示技术有限公司 Led显示屏

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3603499A1 (de) * 1985-05-07 1986-11-13 Geißler & Kuper GmbH Diamantwerkzeug - Wiederaufbereitung, 3100 Celle Diamantbohrkrone mit schaftrohr und rohrgewindeanschluss
US20050120813A1 (en) * 2002-10-31 2005-06-09 Clark Don T. Apparatuses for interaction with a subterranean formation, and methods of use thereof
DE102005015494A1 (de) * 2005-04-05 2006-10-12 Friedr. Ischebeck Gmbh Bajonettkupplung
DE102013012714A1 (de) * 2013-08-01 2015-02-05 Deilmann-Haniel Mining Systems Gmbh Einsteckende für ein Bohr- und Ankersetzgerät

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3603499A1 (de) * 1985-05-07 1986-11-13 Geißler & Kuper GmbH Diamantwerkzeug - Wiederaufbereitung, 3100 Celle Diamantbohrkrone mit schaftrohr und rohrgewindeanschluss
US20050120813A1 (en) * 2002-10-31 2005-06-09 Clark Don T. Apparatuses for interaction with a subterranean formation, and methods of use thereof
DE102005015494A1 (de) * 2005-04-05 2006-10-12 Friedr. Ischebeck Gmbh Bajonettkupplung
DE102013012714A1 (de) * 2013-08-01 2015-02-05 Deilmann-Haniel Mining Systems Gmbh Einsteckende für ein Bohr- und Ankersetzgerät

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110122363A (zh) * 2019-06-17 2019-08-16 内蒙古自治区农牧业科学院 一种羊脚标
CN111140181A (zh) * 2020-03-21 2020-05-12 山东源运通矿山装备科技有限公司 钎杆连接钻尾
CN111794694A (zh) * 2020-07-18 2020-10-20 邹城兖矿泰德工贸有限公司 连接器
CN113674634A (zh) * 2021-07-13 2021-11-19 深圳市雷凌显示技术有限公司 Led显示屏
CN113674634B (zh) * 2021-07-13 2024-02-02 深圳市雷凌显示技术有限公司 Led显示屏

Also Published As

Publication number Publication date
AT15014U1 (de) 2016-11-15
PL3135856T3 (pl) 2018-09-28
EP3135856B1 (fr) 2018-03-21

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