US3599445A - Coupling arrangements for drill rods of earth-drilling tools - Google Patents

Coupling arrangements for drill rods of earth-drilling tools Download PDF

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Publication number
US3599445A
US3599445A US13080A US3599445DA US3599445A US 3599445 A US3599445 A US 3599445A US 13080 A US13080 A US 13080A US 3599445D A US3599445D A US 3599445DA US 3599445 A US3599445 A US 3599445A
Authority
US
United States
Prior art keywords
drill rod
coupling
coupling member
members
coupling arrangement
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
US13080A
Other languages
English (en)
Inventor
Achim Kehrberger
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.)
Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co
Original Assignee
Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co
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
Priority claimed from DE19691910360 external-priority patent/DE1910360C/de
Application filed by Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co filed Critical Delmag Maschinenfabrik Reinhold Dornfeld GmbH and Co
Application granted granted Critical
Publication of US3599445A publication Critical patent/US3599445A/en
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
    • E21B3/00—Rotary drilling
    • E21B3/02—Surface drives for rotary drilling
    • E21B3/04—Rotary tables
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S464/00—Rotary shafts, gudgeons, housings, and flexible couplings for rotary shafts
    • Y10S464/901—Rapid attachment or release

Definitions

  • a coupling member for transmitting rotational displacement to a drill rod is disclosed
  • the drill rod which has one or more rib members projecting from its periphery passes through a bore in the coupling member.
  • One or more expendable bearing strip members are detachably mounted on the coupling member and project into the bore to cooperate with the respective rib members to transmit rotational displacement to the drill rod.
  • each of the expandable bearing strip members comprises a plurality of parts and is provided with a built-up weld in that region of the respective bearing strip member which is adjacent to a cooperating projecting rib member.
  • the present invention relates to a coupling arrangement for coupling the drill rod of an earth-drilling tool to a driving motOl'.
  • a drill rod carrying a drilling tool passes through a drilling table.
  • the drill rod is rotatably driven from a suitable motor mounted on the drilling table and power from the motor is transmitted to the drill rod by means of a coupling member. Because of the nature of drilling operations, such coupling arrangements are normally subjected to considerable, and usually intermittent, stresses and strains and are thus particularly liable to rapid wear and, consequently, may frequently require extensive maintenance.
  • the coupling members prefferably be constructed as simply as possible in order to facilitate the carrying out of repairs at the drilling site.
  • a coupling member for transmitting rotational displacement to a drill rod provided with one or more rib members projecting from the periphery of the rod, the coupling member compris- BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows, in section along H of FIG. 2 a coupling arrangement for a drilling tool embodying the invention
  • FIG. 2 shows a plan view of the coupling arrangement of FIG. lj and FIG. 3 shows an overall view ofa drilling rig which utilizes the coupling arrangement of FIGS. 1 and 2.
  • FIG. 3 shows an overall view of an earth-drilling rig comprising a drilling table 2, which is adapted to slide up and down a vertical guide mast 1.
  • the drilling bit is carried on the lower end of a vertical drill rod 8, which is coupled to a motor (not shown) for rotating the drill rod 8.
  • the coupling arrangement comprises a coupling member whose position on the drilling table 2 is indicated in FIG. 1 by the reference 3.
  • the coupling member 3 is rotatably driven through gears and a suitable motor (not shown) and torque is transmitted via the coupling member3 and the cylindrical drilling rod 8 to rotate a spiral earth-drilling bit carried at the lower end of the drill rod.
  • a suitable motor not shown
  • the coupling member 3 is coaxially mounted around the drill rod 8, which is provided with radially projecting rib members 7 which engage cooperating bearing strip members 11 provided on the coupling member 3.
  • the coupling member 3 comprises two annular portions, namely an upper portion 4 and a lower portion 5. Each of these portions 4 and 5 is provided with annular groove 6 which is discontinuous in the region of each of the projecting rib members 7.
  • Annular strip bearing pads 10 are located adjacent the periphery of the casing 9 of the drill rod 8 and expendable bearing strip members 11 are located adjacent each of the projecting rib members 7.
  • the bearing pads 10 and the bearing strip members 11 fit in the grooves 6.
  • the bearing strip members 11 are reinforced by built-up welds 12 in the regions where they bear on the projecting ribs 7 of the drill rod 8. These built-up welds 12 may project beyond the edges of the grooves 6 so as to provide abutments for transmitting the driving torque to the rib members which project from the circumference of the drill rod.
  • bearing pads 10 and the bearing strips lll can be loosely inserted into the grooves 6, in which they may be secured by appropriate means, such as for example elastic locking elements, in order to facilitate assembly.
  • bearing strips 11 may be obliquely faced for adaptation to spiral projecting ribs 7 on the drill rod 8.
  • the advantage of a coupling arrangement embodying the invention resides in the fact that the coupling member 3 need not be subjected to any difficult machining process, which would entail dismantling the coupling member from the drilling table. If wear occurs, it is necessary only to remove the drill bit from the drill rod so that the latter can be pulled through the drilling table. The worn bearing pads and strips may then be removed and replaced by new pads and strips. This operation can be performed rapidly by unskilled personno], and further dismantling of the drilling rig is unnecessary.
  • a coupling arrangement comprising in combination a drill rod,
  • At least one rib member provided on said drill rod and pro jecting from the periphery thereof
  • At least one expendable hearing strip member detachably mounted on said coupling member and cooperating with said at least one rib member to couple said coupling member to said drill rod.
  • a coupling arrangement as defined in claim 1, comprising a built-up weld provided on each of said expendable bearing strip members, said built-up weld being provided in that region of each of said expendable bearing strip members located adjacent one of said cooperating rib members.
  • each of said expendable bearing strip members comprises a plurality of parts.
  • a coupling arrangement comprising in combination;
  • said coupling member to transmit rotational movement to said cylindrical drilling rod, said coupling member comprising annular portions disposed concentrically of said cylindrical drill rod and surrounding the circumference thereof,
  • At least one expendable bearing strip member detachably mounted on each ofsaid annular portions of said coupling member to couple said coupling member to said cylindrical drill rod.
  • a coupling arrangement as defined in claim 6, comprising at least one bearing pad strip member secured in each of said annular grooves, each of said bearing pad strip members being disposed adjacent the circumference of said cylindrical drill rod.

Landscapes

  • 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)
  • Portable Nailing Machines And Staplers (AREA)
US13080A 1969-02-28 1970-02-20 Coupling arrangements for drill rods of earth-drilling tools Expired - Lifetime US3599445A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691910360 DE1910360C (de) 1969-02-28 Mitnehmer für Bohrstangen

Publications (1)

Publication Number Publication Date
US3599445A true US3599445A (en) 1971-08-17

Family

ID=5726746

Family Applications (1)

Application Number Title Priority Date Filing Date
US13080A Expired - Lifetime US3599445A (en) 1969-02-28 1970-02-20 Coupling arrangements for drill rods of earth-drilling tools

Country Status (3)

Country Link
US (1) US3599445A (enrdf_load_stackoverflow)
FR (1) FR2032486B1 (enrdf_load_stackoverflow)
GB (1) GB1229766A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5246656A (en) * 1992-07-20 1993-09-21 Progressive Dynamics, Inc. Method for forming air flow control orifice in an inflated blanket

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859939A (en) * 1957-03-06 1958-11-11 Reserve Mining Co Rotary drive bushing
US3128614A (en) * 1961-10-27 1964-04-14 Grant Oil Tool Company Drilling head

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2859939A (en) * 1957-03-06 1958-11-11 Reserve Mining Co Rotary drive bushing
US3128614A (en) * 1961-10-27 1964-04-14 Grant Oil Tool Company Drilling head

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5246656A (en) * 1992-07-20 1993-09-21 Progressive Dynamics, Inc. Method for forming air flow control orifice in an inflated blanket

Also Published As

Publication number Publication date
DE1910360B2 (de) 1971-03-11
DE1910360A1 (de) 1970-12-03
GB1229766A (enrdf_load_stackoverflow) 1971-04-28
FR2032486A1 (enrdf_load_stackoverflow) 1970-11-27
FR2032486B1 (enrdf_load_stackoverflow) 1973-07-13

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