EP0201723B1 - Outil de forage avec spirale transporteuse remplaçable - Google Patents

Outil de forage avec spirale transporteuse remplaçable Download PDF

Info

Publication number
EP0201723B1
EP0201723B1 EP86104842A EP86104842A EP0201723B1 EP 0201723 B1 EP0201723 B1 EP 0201723B1 EP 86104842 A EP86104842 A EP 86104842A EP 86104842 A EP86104842 A EP 86104842A EP 0201723 B1 EP0201723 B1 EP 0201723B1
Authority
EP
European Patent Office
Prior art keywords
drilling tool
supporting
ring
axial
diameter
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
EP86104842A
Other languages
German (de)
English (en)
Other versions
EP0201723A3 (en
EP0201723A2 (fr
Inventor
Bernhard Moser
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.)
Robert Bosch Power Tools GmbH
Original Assignee
Hawera Probst 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 Hawera Probst GmbH filed Critical Hawera Probst GmbH
Publication of EP0201723A2 publication Critical patent/EP0201723A2/fr
Publication of EP0201723A3 publication Critical patent/EP0201723A3/de
Application granted granted Critical
Publication of EP0201723B1 publication Critical patent/EP0201723B1/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
    • 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
    • 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
    • E21B17/22—Rods or pipes with helical structure

Definitions

  • the invention relates to a drilling tool with exchangeable conveying helix, which is axially secured by means of a support device which is positively supported on the drill shaft.
  • Push-on conveying coils according to the preamble of claim 1 are known for example from DE-A 25 43 578 or DE-A 30 44 775.
  • the conveying helix is axially secured by means of a two-part clamping ring which can be clamped to the shaft by means of screws.
  • a further annular element is arranged between the outer surface of the clamping ring and the outer surface of the shaft, and an elastic member serving as a buffer is arranged between the rear end of the helix and the clamping ring.
  • the object of this support device therefore requires at least four different components and the assembly or disassembly for exchanging the helix is complicated.
  • a sufficient effect of the axial securing of the conveyor helix can only be achieved by extremely careful assembly.
  • a sleeve which is axially displaceable against the pressure of the helix is used and which fixes the axial position of a part which interacts positively with the drill shaft and the sleeve in the manner of a feather key.
  • a drilling tool according to the preamble of the main claim has become known.
  • This is a sampling device for taking soil samples.
  • the device When closed, the device can be used like a drill, in which the feed helix can also be dismantled with a certain amount of effort.
  • the conveying helix In the assembled state, the conveying helix is positively supported on the piston of the drilling tool by means of a locking device with a latching member and forms an axial support lock.
  • this known device has the disadvantage that a quick and quick change of the spiral blade for conveying soil substance is not provided and is also not easily possible.
  • the invention has for its object to provide a drilling tool with a cylindrical drill shaft and drill head, in which the conveying helix is quick and easy to replace, but which is securely secured and held in its axial position during operation.
  • the axial support for slip-on helixes according to the invention has the advantage over known devices that it can be produced very inexpensively using standard parts. Furthermore, it does not generate any natural vibrations and has a vibration-damping effect on the drill system or vibration reducing.
  • the assembly can be done without complex special tools. It is also advantageous that it can be used universally for a whole range of diameter drilling tools, ie for different interchangeable conveying coils and for drilling tools with different drilling heads with a constant shaft diameter.
  • the simple construction results in a long service life of the support device.
  • the support device can be used equally for different types of coils, ie with and without a jacket tube.
  • an elastic sleeve is used as the axial supporting device, which engages in a form-fitting manner in the puncture groove on the drill shaft and thus serves both as an axial securing means and as a damping member of the drilling tool.
  • a further development of the invention is effected according to subclaim 3 in that the elastic sleeve is held in its axial position within the insertion groove by means of a support ring, clamping ring or the like. H. an expansion of the inner and thus the outer diameter of the sleeve to leave the groove is only possible with the support ring removed.
  • the support ring itself can also be secured against axial slipping via a holding shoulder.
  • the clamping ring is clamped with pliers and pinched or opened after use.
  • the rubber sleeve is constricted into the groove by pulling the clamping ring together.
  • the drilling tool 10 shown in FIG. 1 consists of a drill shaft 11 with a diameter D.
  • the lower clamping shaft 12, which is cut off in the figure, and the upper support shaft 13 for the attachable conveying helix 14 are separated by the support device 15 designed as a sleeve.
  • the elastic Sleeve 15 made of rubber or plastic has a T-shaped cross section, ie it consists of an upper collar 16 with a larger diameter and a lower collar 17 with a smaller diameter.
  • the drill shaft 11 has an insertion groove 19 which extends axially from the lower edge 18 of the conveying helix 14 and whose diameter d 'corresponds to the inside diameter d of the sleeve 15.
  • the inner diameter d of the sleeve 15 can be made somewhat smaller than the diameter d 'of the insertion groove 19 in the untensioned state in order to enable an additional non-positive bracing.
  • the sleeve carries over the lower collar 17 a clamping ring 20 which is dimensioned in its inner diameter such that the sleeve can not widen its outer diameter and thus the inner diameter d after engagement in the groove 19, so that the sleeve 15 after the attachment of Clamping ring 20 is clearly fixed in its axial position by positive locking.
  • An additional frictional connection between sleeve 15 and groove 19 results from the elasticity of the rubber sleeve.
  • the support ring 20 can be secured against slipping axially by means of a small holding shoulder 21 below the support ring 20, the outer diameter of which is somewhat larger than the inner diameter of the support ring.
  • the upper, wider collar 16 serves to dampen the support spiral 14.
  • the support device or sleeve 15 is shown schematically from view II in FIG. 1. This shows in particular the design of the support ring 20 as a two-ear hose clamp, which is expediently used.
  • the assembly or disassembly of the conveyor helix 14 on the drill shaft then takes place as follows: Assembly: The clamping ring 20, designed as a two-ear hose clamp, is in its original state larger in diameter than the outer diameter of the sleeve 15 Rubber sleeve is firmly pressed into the groove 19. For dismantling, the clamping ring 20 is pinched off and pulled off with pliers.
  • the support ring 20 can itself be held in position by the holding shoulder so that it does not slip off.
  • the support ring 20 is then pulled off over the holding shoulder.
  • the elastic sleeve 15 can be enlarged with respect to its inner diameter d and can be removed from the groove 19 by axial displacement (downward in FIG. 1).
  • the feed helix 14 can also be removed from the drill shaft 11.
  • any other form of hose clamp can also be used.

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)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Drilling And Boring (AREA)
  • Drilling Tools (AREA)

Claims (5)

  1. Outil de forage à hélice d'extraction (14) interchangeable, qui s'appuie au moyen d'un dispositif d'appui axial (15) constitué d'une douille de matière synthétique ou de caoutchouc élastique (15), s'appuyant sur l'arbre (11) du foret, laquelle peut être enfilée sur l'arbre de fixation cylindrique (12),
    caractérisé en ce que l'arbre (11) du foret présente une rainure (19) dans la zone d'extrémité de l'hélice d'extraction (14), pour la réception du dispositif d'appui axial (15) adapté, en ce qui concerne son diamètre interne (d), au diamètre (d') de la rainure, le dispositif d'appui axial (15) supportant l'extrémité, du côté de l'arbre de fixation, de l'hélice d'extraction (14), et pouvant être emboîté mécaniquement dans la rainure (19), et en ce qu'un élargissement radial du dispositif d'appui axial (15) peut être empêché par mise en place d'une bague cylindrique (20).
  2. Outil de forage selon la revendication 1,
    caractérisé en ce que le dispositif d'appui (15) présente un épaulement de support (16) proche de la tête du foret ou de l'hélice d'extraction (14).
  3. Dispositif de forage selon la revendication 2,
    caractérisé en ce que la douille élastique (15) présente, à sa surface d'enveloppe externe, une bague d'appui, une bague de serrage, une bride de serrage, ou analogue (20), en particulier une pince pour tuyau à deux oreilles (20).
  4. Dispositif de forage selon la revendication 3,
    caractérisé en ce que la bague d'appui, la bague de serrage ou analogue (20) est maintenue axialement contre la douille élastique (15) au moyen d'un épaulement de maintien (21).
  5. Outil de forage selon la revendication 3 ou 4,
    caractérisé en ce que le diamètre interne (d) de la douille (15) correspond à peu près au diamètre (D) de l'arbre du foret, et en ce que la bague d'appui ou la bague de serrage (20) est prévue pour son insertion dans la rainure (19).
EP86104842A 1985-05-15 1986-04-09 Outil de forage avec spirale transporteuse remplaçable Expired - Lifetime EP0201723B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8514422U DE8514422U1 (de) 1985-05-15 1985-05-15 Bohrwerkzeug mit austauschbarer Förderwendel
DE8514422U 1985-05-15

Publications (3)

Publication Number Publication Date
EP0201723A2 EP0201723A2 (fr) 1986-11-20
EP0201723A3 EP0201723A3 (en) 1987-10-07
EP0201723B1 true EP0201723B1 (fr) 1991-09-04

Family

ID=6781150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86104842A Expired - Lifetime EP0201723B1 (fr) 1985-05-15 1986-04-09 Outil de forage avec spirale transporteuse remplaçable

Country Status (3)

Country Link
US (1) US4750572A (fr)
EP (1) EP0201723B1 (fr)
DE (3) DE8514422U1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3635538A1 (de) * 1986-10-18 1988-04-28 Hawera Probst Kg Hartmetall Bohrwerkzeug mit austauschbarer foerderwendel
DE3805657C2 (de) * 1986-10-18 1996-04-25 Hawera Probst Kg Hartmetall Bohrwerkzeug mit austauschbarer Förderwendel
DE3800611A1 (de) * 1988-01-12 1989-07-20 Hawera Probst Kg Hartmetall Bohrwerkzeug
DE3820697A1 (de) * 1988-06-18 1989-12-21 Hawera Probst Kg Hartmetall Bohrwerkzeug
CN102116133B (zh) * 2010-12-01 2013-11-27 卢丹 一种法兰连接机构与包含其的破碎机构
CN104373071A (zh) * 2014-11-17 2015-02-25 大同煤矿集团有限责任公司 高效打捞器

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108157A1 (fr) * 1982-11-04 1984-05-16 Földmerö Es Talajvizsgalo Vallalat Dispositif de carottage pour le prélèvement d'échantillons de sol non remué

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE665884A (fr) *
US1116154A (en) * 1913-03-26 1914-11-03 William G Stowers Post-hole digger.
US2116359A (en) * 1936-07-27 1938-05-03 Mccann Forest Glen Well boring apparatus
US2400478A (en) * 1943-08-10 1946-05-21 Lester E Beck Power-driven earth auger
US2675257A (en) * 1950-11-08 1954-04-13 Albert J Specht Material boring auger
US2831659A (en) * 1954-05-13 1958-04-22 Shell Dev Earth coring apparatus
AT268628B (de) * 1965-06-14 1969-02-25 Artur Fischer Bohrer
DE2543578C2 (de) * 1975-09-30 1986-03-06 Friedrich Duss Maschinenfabrik GmbH & Co, 7265 Neubulach Gesteinsbohrer
DE3044775A1 (de) * 1980-11-27 1982-07-08 Hilti AG, 9494 Schaan Gesteinsbohrer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0108157A1 (fr) * 1982-11-04 1984-05-16 Földmerö Es Talajvizsgalo Vallalat Dispositif de carottage pour le prélèvement d'échantillons de sol non remué

Also Published As

Publication number Publication date
EP0201723A3 (en) 1987-10-07
US4750572A (en) 1988-06-14
DE8514422U1 (de) 1985-07-18
DE3609934A1 (de) 1986-11-20
DE3681194D1 (de) 1991-10-10
EP0201723A2 (fr) 1986-11-20

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