EP1956183B1 - Spannkopf für ein Gestängeelement - Google Patents

Spannkopf für ein Gestängeelement Download PDF

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Publication number
EP1956183B1
EP1956183B1 EP07400003A EP07400003A EP1956183B1 EP 1956183 B1 EP1956183 B1 EP 1956183B1 EP 07400003 A EP07400003 A EP 07400003A EP 07400003 A EP07400003 A EP 07400003A EP 1956183 B1 EP1956183 B1 EP 1956183B1
Authority
EP
European Patent Office
Prior art keywords
rod
chuck head
clamping
lifting
drive
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.)
Not-in-force
Application number
EP07400003A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1956183A1 (de
Inventor
Georg Hofner
Leonhard Weixler
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
Priority to DE502007001181T priority Critical patent/DE502007001181D1/de
Priority to AT07400003T priority patent/ATE438019T1/de
Priority to EP07400003A priority patent/EP1956183B1/de
Priority to ES07400003T priority patent/ES2328979T3/es
Publication of EP1956183A1 publication Critical patent/EP1956183A1/de
Application granted granted Critical
Publication of EP1956183B1 publication Critical patent/EP1956183B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/02—Rod or cable suspensions
    • E21B19/06—Elevators, i.e. rod- or tube-gripping devices
    • E21B19/07—Slip-type elevators
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/16—Connecting or disconnecting pipe couplings or joints

Definitions

  • the invention relates to a clamping head for a linkage element with clamping elements for clamping the linkage element radially to the rod axis, a lifting device for generating an axial lifting movement and a Keilschiebermechanismus by which the axial lifting movement can be converted into a radial movement and for tensioning the linkage element to the clamping elements ,
  • Generic clamping heads are for example from the EP 0 525 247 A1 , of the DE 40 15 300 C1 or the US 5,992,801 known. These devices, which are used in particular for gripping drill pipe elements, have a conical surface as a wedge slide mechanism. Along the conical surface clamping blocks are guided as clamping elements displaced. In order to ensure a linear movement on these inclined conical surfaces, guide rails or guide grooves are generally provided.
  • Another chuck is from the EP 0 874 129 A known.
  • the clamping elements are also guided along a cone surface.
  • the lifting movement for adjusting the clamping elements is effected by the insertion of the linkage element.
  • the invention has for its object to provide a clamping head for a linkage element, which has a particularly robust and simple structure.
  • the clamping head according to the invention is characterized in that the wedge slide mechanism is formed by at least two actuating rods, which are slidably mounted in a base body in oblique to the rod axis guide bores, and that the actuating rods are connected at one end to the lifting device and at one end in each case directly a clamping element is arranged.
  • a first aspect of the invention can be seen in that the production of large conical surfaces is avoided.
  • the wedge arrangement for the wedge slide mechanism is effected by simple obliquely directed holes, in which simple, preferably cylindrical actuating rods are guided. This is easy and inexpensive to produce. Due to the oblique, preferably acute angle directed to the rod axis arrangement of the actuating rods they are also adjusted radially in an axial stroke movement.
  • Another aspect of the invention is not to store the actual clamping elements directly on the housing.
  • the clamping elements, which contact and hold the linkage element are arranged directly on the actuating rods, so that the clamping forces are transmitted to the main body or the housing via the actuating rods and the surrounding guide holes.
  • the actuating rods and the guide holes can be formed independently of the clamping elements in almost any dimensioning, so that a good force distribution and thus low surface pressures can be achieved. This protects the overall construction and reduces the effort required to release the clamping connections.
  • the lifting device has a sliding member, which is mounted axially displaceably on the base body.
  • the sliding member transmits an axial movement of the lifting device on the actuating rods. Since the actuating rods are mounted in the base body, a reliable transmission of the axial movement is ensured by the slide member also mounted on the base body. This allows the further lifting device, in particular a lifting cylinder, to be arranged separately from the main body.
  • the actuating rod is held axially fixed and radially displaceable on the sliding member.
  • In the radial direction may be provided about a T-slot guide or a dovetail guide, which allows a radial movement relative between the sliding member and the actuating rod.
  • the lifting device comprises a lifting plate, with which the sliding member is rotatably connected via a rotary bearing.
  • the pivot bearing which may be in particular an axial and radial bearing, makes it possible to use the clamping head for clamping rotating drill pipe without the lifting device with the clamping elements must be set in rotation. In such a case, the main body and the slide member would rotate with a linkage element, while the lifting plate can stand relative thereto due to the pivot bearing.
  • the lifting device can be designed in any desired way to effect an axial movement.
  • Conceivable is a cable drive, a spindle drive or a rack and pinion drive. It is provided according to the invention that the lifting device has at least one actuating cylinder.
  • the adjusting cylinder may in particular be a hydraulic cylinder, as this can reliably transmit high axial forces in a compact manner.
  • the lifting device can be designed so that it generates an axial forward and backward movement via a drive member.
  • a particularly simple embodiment according to the invention is that the lifting device has a spring mechanism for an axial return movement.
  • the drive member may be a single-acting actuator cylinder.
  • the clamping head according to the invention can only be used for clamping and holding rod elements, as is necessary, for example, for simple holding devices or hoists.
  • the clamping head can also be used as a drive unit, is provided in accordance with the invention that a drive connection with a rod connection device, in particular a thread, is provided and that the drive connection is driven in rotation.
  • the clamping head can be designed in particular so that a drill string element is initially held on the clamping elements, while a corresponding connection element of the drive unit or other linkage element is rotated relative thereto via a strut, so that a linkage connection is made.
  • such a device according to the invention can be used for driving drill pipes from individual drill string elements.
  • the drive connection is mounted axially fixed relative to the main body.
  • the drive connection can be arranged rotatable or non-rotatable relative to the main body.
  • the invention further relates to a drill with a drill drive for rotationally driving a drill pipe, which is composed of individual linkage elements, which is characterized according to the invention in that a previously described clamping head is provided.
  • a drill is created with which a simple and reliable tension of linkage elements is possible.
  • the drive connection of the clamping head forms the output of the drill drive.
  • the drill drive thus represents a part of the clamping head according to the invention, so that they can be formed as a unit.
  • FIGURE shows a schematic cross-sectional view, wherein the right side represents a clamping position and the left side represents a release position of the clamping head according to the invention.
  • an inventive clamping head 10 comprises a sleeve-shaped base body 14, on the outside of which a shoulder 15 is provided for broadening.
  • a shoulder 15 is provided for broadening.
  • cylindrical guide holes 54 are arranged distributed uniformly over the circumference.
  • two guide holes 54 are shown, but it can also be more, four, six, eight, etc. guide holes 54 may be provided.
  • the guide bores 54 are arranged at an acute angle to a rod axis 6, which coincides with an axis of rotation of the clamping head 10.
  • an actuating rod 52 are slidably mounted, at the lower end in each case a clamping element 12 is fixed for contacting a rod member to be held 5.
  • a radial guide 34 which is a dovetail design in the present embodiment, axially fixed to an annular slide member 32, but held radially displaceable.
  • the sliding member 32 is mounted axially displaceably on a cylindrical guide surface 19 of the base body 14.
  • the sliding member 32 is in turn axially fixed via a pivot bearing 38, but rotatably supported on an annular lifting plate 36 of a lifting device 30.
  • piston 39 At the top of the lifting plate 36 schematically indicated piston 39 are hinged by adjusting cylinders, which cause a stroke H of the lifting plate 36 in the axial direction.
  • a drive connection 16 is rotatably mounted on the inside of the main body 14.
  • the drive connection 16 has a thread at its lower end.
  • an inner tube 17 is rotatably fixed, which is provided for a fluid passage.
  • the rotary drive and the fluid supply, to which the drive port 16 and the inner tube 17 are connected, are omitted for reasons of clarity.
  • a lubricating device 20 with lubrication channels a multi-tooth connection 21, provided on the base body 14 and the drive port 16 with lubricant.
  • the release position of the clamping head 10 is in the left side of Fig. 1 shown.
  • the lifting plate 36 is moved upwards. Accordingly, the slide member 32 and the actuating rods 52 are in their upper position.
  • After insertion of an upper end of the linkage element 5 with a rod thread 7 in the inner space of the tubular body 14 is lowered for clamping the lifting plate 36 via the piston 39. Accordingly, the slide member 32 and the actuating rods 52 held thereon are displaced downward.
  • the actuating rods 52 are also moved radially in the direction of the linkage axis 6 until the hardened clamping elements 12 firmly abut the outside of the linkage element 5 and this rotatably with the Connect body 14.
  • the wedge slide mechanism 50 allows easy manufacturability, since normal cylindrical bores and simple cylinder rods can be used, wherein the wedge effect is achieved only by an oblique arrangement of the guide bores 54.
  • the actuating rods 52 can be made relatively long, so that even with large clamping forces relatively low surface pressures between the actuating rods 52 and the base 14 result. As a result, jamming of the clamping head 10 is counteracted and reduces the force required to release the clamping position.
EP07400003A 2007-01-30 2007-01-30 Spannkopf für ein Gestängeelement Not-in-force EP1956183B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE502007001181T DE502007001181D1 (de) 2007-01-30 2007-01-30 Spannkopf für ein Gestängeelement
AT07400003T ATE438019T1 (de) 2007-01-30 2007-01-30 Spannkopf für ein gestängeelement
EP07400003A EP1956183B1 (de) 2007-01-30 2007-01-30 Spannkopf für ein Gestängeelement
ES07400003T ES2328979T3 (es) 2007-01-30 2007-01-30 Cabezal de sujecion para un elemento de barra con tensores.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07400003A EP1956183B1 (de) 2007-01-30 2007-01-30 Spannkopf für ein Gestängeelement

Publications (2)

Publication Number Publication Date
EP1956183A1 EP1956183A1 (de) 2008-08-13
EP1956183B1 true EP1956183B1 (de) 2009-07-29

Family

ID=38093709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07400003A Not-in-force EP1956183B1 (de) 2007-01-30 2007-01-30 Spannkopf für ein Gestängeelement

Country Status (4)

Country Link
EP (1) EP1956183B1 (es)
AT (1) ATE438019T1 (es)
DE (1) DE502007001181D1 (es)
ES (1) ES2328979T3 (es)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114233213A (zh) * 2021-11-15 2022-03-25 徐州徐工基础工程机械有限公司 一种水井钻机快速夹持装置及其操作方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3105565C1 (de) * 1981-02-16 1982-09-30 Wirth Maschinen- und Bohrgeräte-Fabrik GmbH, 5140 Erkelenz "Klemmvorrichtung für Bohrgestänge, Rohre oder ähnliche Gegenstände"
US5297833A (en) * 1992-11-12 1994-03-29 W-N Apache Corporation Apparatus for gripping a down hole tubular for support and rotation
IT1292266B1 (it) * 1997-04-22 1999-01-29 Soilmec Spa Dispositivo di bloccaggio per la manovra di caricamento ed avvitamento di una batteria di aste e tubazioni di rivestimento per l'uso in
DE60028425T2 (de) * 1999-03-05 2006-10-19 Varco I/P, Inc., Houston Ein- und Ausbauvorrrichtung für Rohre

Also Published As

Publication number Publication date
ATE438019T1 (de) 2009-08-15
EP1956183A1 (de) 2008-08-13
DE502007001181D1 (de) 2009-09-10
ES2328979T3 (es) 2009-11-19

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