EP1956183B1 - Tête de serrage pour un élément de tiges - Google Patents
Tête de serrage pour un élément de tiges Download PDFInfo
- 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
Links
- 238000005553 drilling Methods 0.000 claims abstract 4
- 230000001154 acute effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
Images
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
- 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 OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
- Magnetic Heads (AREA)
- Wire Bonding (AREA)
Claims (8)
- Tête de serrage pour un élément (5) de tige, avec- des éléments de serrage (12) destinés à serrer l'élément (5) de tige radialement par rapport à son axe (6) de tige,- un dispositif de levage (30) destiné à produire un mouvement axial de levage, et- un mécanisme à coulisseau cunéiforme (50) grâce auquel le mouvement axial de levage peut être transformé en un mouvement radial et peut être transmis aux éléments de serrage (12) pour serrer l'élément (5) de tige,caractérisée- en ce que le dispositif de levage (30) comprend un élément coulissant (32) qui est monté mobile axialement sur le corps de base (14), et au moins un vérin de manoeuvre,- en ce que le mécanisme à coulisseau cunéiforme (50) est formé par au moins deux tiges d'actionnement (52) qui sont montées mobiles dans un corps de base (14) à l'intérieur de perçages de guidage (54) orientés à l'oblique par rapport à l'axe (6) de tige, et- en ce que les tiges d'actionnement (52) sont reliées à l'élément coulissant (32) à une extrémité et un élément de serrage (12) est placé à chaque fois directement à une autre extrémité.
- Tête de serrage selon la revendication 1, caractérisée en ce que la tige d'actionnement (52) est tenue sur l'élément coulissant (32) de manière fixe axialement et mobile radialement.
- Tête de serrage selon la revendication 1 ou 2, caractérisée en ce que le dispositif de levage (30) comprend une plaque de levage (36) avec laquelle l'élément coulissant (32) est relié de manière rotative par l'intermédiaire d'un palier rotatif (38).
- Tête de serrage selon l'une quelconque des revendications 1 à 3, caractérisée en ce que le dispositif de levage (30) comprend un mécanisme à ressort pour un mouvement axial de rappel.
- Tête de serrage selon l'une quelconque des revendications 1 à 4, caractérisée
en ce qu'un raccord d'entraînement (16) avec un dispositif de jonction de tige, en particulier un filetage (18), est prévu, et
en ce que le raccord d'entraînement (16) peut être entraîné en rotation. - Tête de serrage selon la revendication 5, caractérisée en ce que le raccord d'entraînement (16) est monté fixe axialement par rapport au corps de base (14).
- Engin de forage avec un entraînement de forage pour entraîner en rotation une tige de forage qui est composée de plusieurs éléments (5) de tige, caractérisé en ce qu'une tête de serrage (10) selon l'une quelconque des revendications 1 à 6 est prévue.
- Engin de forage selon la revendication 6, caractérisé en ce que le raccord d'entraînement (16) de la tête de serrage (10) forme la sortie de l'entraînement de forage.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE502007001181T DE502007001181D1 (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. |
AT07400003T ATE438019T1 (de) | 2007-01-30 | 2007-01-30 | Spannkopf für ein gestängeelement |
EP07400003A EP1956183B1 (fr) | 2007-01-30 | 2007-01-30 | Tête de serrage pour un élément de tiges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07400003A EP1956183B1 (fr) | 2007-01-30 | 2007-01-30 | Tête de serrage pour un élément de tiges |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1956183A1 EP1956183A1 (fr) | 2008-08-13 |
EP1956183B1 true EP1956183B1 (fr) | 2009-07-29 |
Family
ID=38093709
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07400003A Not-in-force EP1956183B1 (fr) | 2007-01-30 | 2007-01-30 | Tête de serrage pour un élément de tiges |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1956183B1 (fr) |
AT (1) | ATE438019T1 (fr) |
DE (1) | DE502007001181D1 (fr) |
ES (1) | ES2328979T3 (fr) |
Families Citing this family (3)
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 |
CN117967215B (zh) * | 2024-03-29 | 2024-06-04 | 江苏诚创智能装备有限公司 | 一种六钳头动力卡瓦 |
CN118008170B (zh) * | 2024-04-10 | 2024-06-21 | 西安宇星石油机械新技术开发有限公司 | 一种复合式液压齿轮传动防顶防坠卡盘 |
Family Cites Families (4)
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 |
EP1171683B2 (fr) * | 1999-03-05 | 2017-05-03 | Varco I/P, Inc. | Instrument d'assemblage de tuyaux |
-
2007
- 2007-01-30 EP EP07400003A patent/EP1956183B1/fr not_active Not-in-force
- 2007-01-30 DE DE502007001181T patent/DE502007001181D1/de active Active
- 2007-01-30 AT AT07400003T patent/ATE438019T1/de active
- 2007-01-30 ES ES07400003T patent/ES2328979T3/es active Active
Also Published As
Publication number | Publication date |
---|---|
ES2328979T3 (es) | 2009-11-19 |
ATE438019T1 (de) | 2009-08-15 |
EP1956183A1 (fr) | 2008-08-13 |
DE502007001181D1 (de) | 2009-09-10 |
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