US3856091A - Adjustable drill support - Google Patents

Adjustable drill support Download PDF

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Publication number
US3856091A
US3856091A US00403126A US40312673A US3856091A US 3856091 A US3856091 A US 3856091A US 00403126 A US00403126 A US 00403126A US 40312673 A US40312673 A US 40312673A US 3856091 A US3856091 A US 3856091A
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Prior art keywords
base
support
friction
support column
machine
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US00403126A
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N Dyer
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TAMROCK CANADA Inc A CORP OF ONTARIO CANADA
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Dresser Industries Inc
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Priority to US00403126A priority Critical patent/US3856091A/en
Priority claimed from AU72521/74A external-priority patent/AU485548B2/en
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Assigned to TAMROCK CANADA INC., A CORP. OF ONTARIO, CANADA reassignment TAMROCK CANADA INC., A CORP. OF ONTARIO, CANADA ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: DRESSER INDUSTRIES, INC., A DE. CORP.
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00Special methods or apparatus for drilling
    • E21B7/02Drilling rigs characterized by means for land transport with their own drive, e.g. skid mounting or wheel mounting
    • E21B7/027Drills for drilling shallow holes, e.g. for taking soil samples or for drilling postholes
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21BEARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B15/00Supports for the drilling machine, e.g. derricks or masts
    • E21B15/04Supports for the drilling machine, e.g. derricks or masts specially adapted for directional drilling, e.g. slant hole rigs

Abstract

A rotary drill head assembly is mounted for travel along the support columns of an earth boring machine. The support columns are connected to the base of the machine by hinge connections including hinge pins. Brace members extend between the base and the support columns. The rotary drill head assembly rotates a rotary drill string to form an earth borehole. Thrust cylinders connected between the support columns and the drill head apply axial thrust forces to the drill head assembly to move the drill string through the formations resulting in axial thrust loads being applied to the support columns. A convex arcuate friction surface on the end of each support column fits within a matching concave arcuate friction surface on the base of the machine to transmit a portion of the axial thrust loads from said support columns to said base.

Description

United States Patent [191 Dyer [451 Dec. 24, 1974 ADJUSTABLE DRILL SUPPORT [75] Inventor: Norman Dean Dyer, Beaumont, Tex.
[73] Assignee: Dresser Industries, Inc., Dallas, Tex.
[22] Filed: Oct. 3, 1973 [21] Appl. No.: 403,126
[52] U.S. C1. 173/39 [51] Int. Cl. E2lc 11/00 [58] Field of Search 173/39-44; 175/5, 7, 9, 85; 2l4/2.5
[56] 5 References Cited UNITED STATES PATENTS 1,504,441 8/1924 Gehrandt 173/44 2,162,553 6/1939 Hirschberg 173/42 2,692,756 10/1954 Lincoln 173/39 3,539,024 11/1970 lrons 175/9 3,650,339 3/1972 Selfe et al. 175/85 3,780,816 12/1973 Arringlon et al. 173/39 Primary Examiner-James A. Leppink Attorney, Agent, or Firm-Eddie E. Scott [57] ABSTRACT A rotary drill head assembly is mounted for travel along the support columns of an earth boring machine. The support columns are connected to the'base of the machine by hinge connections including hinge pins. Brace members extend between the base and the support columns. The rotary drill head assembly rotates a rotary drill string to form an earth borehole. Thrust cylinders connected between the support columns and the drill head apply axial thrust forces to the drill head assembly to move the drill string through the formations resulting in axial thrust loads being applied to the support columns. A convex arcuate friction surface on the end of each support column fits within a matching concave arcuate friction surface on the base of the machine to transmit a portion of the axial thrust loads from said support columns to said base.
6 Claims, 2 Drawing Figures ,dzs
ADJUSTABLE DRILL SUPPORT BACKGROUND OF THE INVENTION mally been a pin and the pin had to carry both up and down thrust loads as well as horizontal loads due to the drilling angle and torque on the drill pipe. In order to accommodate the large thrust loads, it has been necessary to use large pins and position the pins a relatively large distance above the base member.
The present invention has particular utility in raise drilling; however, its use is not restricted thereto. Raise drilling is an operation that proceeds by the drilling of a relatively small diameter pilot hole and the subse quent enlargement of the pilot hole into a relatively large diameter hole by a reaming operation. Earth boring machines used for raise drilling encounter relatively small axial thrust loads during the drilling of the pilot hole. When the pilot hole is being enlarged into a large diameter hole the earth boring machine encounters much larger axial thrust loads. In order to accommodate the large axial thrust loads encountered during the reaming operation the prior art earth boring machines have used large pivot pins spaced a relatively large dis tance above the base.
DESCRIPTION OF PRIOR ART In US. Pat. No. 3,563,322, to J. W. Young et al., patented Feb. 16. 1971, a system for erecting and changing the position of the drill column of an earth boring machine is shown. The drill assembly'is held in place by supports pivotally mounted upon a base. Brace means are attached to the supports which hold the drill assembly in position. Linkages may be attached to the drill assembly and the brace means removed. Movement of the main thrust cylinder in the drill assembly causes the support means and consequently the drill column to change position. The support members may again be put in place to hold the drill column in position.
In US. Pat. No. 3,220,494, to R. E. Cannon et al., patented Nov. 30, I965, a raise drilling machine is shown. The machine drills a small diameter hole to another level and enlarges the small diameter hole into a large diameter hole by a reaming operation.
SUMMARY OF THE INVENTION base by hinge connections that include hinge pins and by braces that extend between the base and the support columns. The hinge pins transmit a portion of the axial thrust loads from the support columns to the base. A friction surface means on the end of each of the support columns engages a matching friction surface means on the base to transmit a portion of the axial thrust loads from the support columns to the base. The above and other features and advantages of the present invention will become apparent from a consideration of the following detailed description of the invention when taken in conjunction with the drawings.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side-elevational view of an earth boring machine constructed in accordance with the present invention.
FIG. 2 is a cross-sectional view of a portion of the earth boring machine shown in FIG. 1 taken substantially along line 2-2.
DETAILED DESCRIPTION OF THE INVENTION An earth boring machine generally designated by the reference number 10 is shown in FIGS. 1 and 2. A pair of support columns 11 and 12 are pivotally connected to the machine base 13 by a pair of hinge pins 14 and 15. A convex arcuate surface 16 connected to support column 11 rests within a matching concave arcuate surface 17 on base 13. A convex arcuate surface 18 connected to support column 12 rests within a matching concave arcuate surface 19 on base 13. Hinge pins 14 and 15 extend from the support columns 11 and 12 into upstanding support frames 29 and 30 respectively extending from base 13. A brace 20 extends between support column 11 and base 13. Brace 20 is pinned to the base 13 by a pin 21 and is pinned to the support column 11 by a pin 22. A substantially identical brace (not shown) extends between support column 12 and base 13.
A frame 23 projects outward from the support columns 11 and 12. A drill head 27 is mounted on a traveling carriage 26. The carriage 26 is adapted to travel along the support columns 11 and 12. A hydraulic thrust cylinder 24 is connected to the carriage 26 and drill head 27. The piston rod 25 of the hydraulic cylinder 24 is connected to'the frame 23. A substantially identical hydraulic cylinder (not shown) is mounted on the opposite side of the carriage 26 and drill head 27 and is connected to frame 23. A motor 28 is mounted on the drill head 27 to provide the rotary force for rotating a rotary drill string through a suitable gearing unit 31.
The structural details of an earth boring machine constructed in accordance with the present invention having been described, the operation of the machine will now be considered. The machine 10 is transported to the drill site. in a collapsed position. The brace 20 is removed and the columns 11 and 12 are rotated about pins 14 and 15 until the columns 11 and 12 are substantially parallel to the base 13. The convex arcuate friction surfaces 16 and 18 will turn in the matching concave arcuate friction surfaces 17 and 19. Once the earth boring machine 10 arrives at the drill site, the,
An actuating fluid is delivered to the hydraulic cylinders and the piston rods are moved outward thereby causing the carriage to move upward along the support columns 11 and 12 carrying the motor 28, gearing unit 31 and drill head 27 therewith. A section of drill rod is connected to the drill head 27 and the earth boring machine is ready for operation. A rotary rock bit is connected to the drill rod and the bit is rotated and moved through the formations. An actuating fluid is applied to the hydraulic cylinders to force the piston rods to move toward their retracted position thereby applying a downward thrust force to the drill string. This operation is referred to as pilot hole drilling.
The reaction thrust force resulting from pilot hole drilling is relatively small. This reaction thrust force is transmitted from the piston rods of the thrust cylinders to the frame 23 and the support columns 11 and 12.-
The reaction thrust force tends to force the drill head 27, gearing unit 31, motor 28, carriage 26, the thrust cylinders, frame 23, and support columns 11 and 12 upward. The reaction thrust force is transmitted from the support columns 11 and 12 through pins 14 and 15 'to the support braces 29 and connected to the base 13. Since the magnitude of the reaction thrust force is small during pilot hole drilling and because the weight of the drill head 27, gearing unit 31, motor 28, carriage 26, the thrust cylinders, frame 23, and support columns 11 and 12 is acting against the reaction thrust force the pins 14 and 15 may be relatively small.
Additional drill rods are added to the drill string during the pilot drilling operation as the pilot hole penetrates deeper into the earth. This procedure is continued until a small diameter pilot hole has been completed to another level of the mine. The small diameter pilot bit is removed and a large diameter raise bit is connected to the drill string. The raise bit is then rotated and moved through the formations along the pilot hole to form the large diameter raise hole. Actuating fluid is delivered to the hydraulic cylinders moving the piston rods toward the extended position thereby applying an axial thrust force to the raise bit. Since the raise bit is a substantially larger bit than the pilot bit, a substantially greater reaction thrust force will be applied to the earth boring machine. The reaction force is downward and the weight of the drill head 27, gearing unit 31, motor 28, carriage 26, the thrust cylinders, frame 23 and support columns add to the reaction thrust force during the reaming operation. This reaction thrust force is transmitted from the piston rods to the frame 23 and the support columns 11 and 12. The reaction thrust force is transmitted from the support columns 11 and 12 to the base 13 through the convex arcuate friction surfaces 16 and 18 that rest in the concave arcuate friction surfaces 17 and 19. The friction surfaces l6, l7, l8 and 19 will support a reaction force of substantial magnitude. From the foregoing it will be appreciated that relatively small pins 14 and 15 may be used since they need support only the reaction force during pilot hole drilling.
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
1. An earth boring machine, comprising: base means for supporting said machine,
at least one support member extending out from said base means,
drilling means that travel along said support member for providing drilling forces,
hinge means for rotatably connecting said support member to said base means, said hinge means being a pin connection,
brace means connecting said support member and said base means,
a friction surface means on said base means, said friction surface means on said base means being a curved surface immediately below said support member with said curved surface on said base means being a concave surface, and
a friction surface means connected to said support member proximate said friction surface means on said base means for contacting said friction surface means on said base means, said friction surface means connected to said support member being a curved surface positioned on the end of said support member with said curved surface connected to said support member being a convex surface;
2. An earth boring machine for drilling by rotation of a rotary drill string, comprising:
machine base means for supporting said machine,
a support column extending upward from said machine base means,
a rotary drive assembly mounted for travel along said support column for rotating the rotary drill string,
pin connection means for rotatably connecting saidv support column to said machine base means, and
brace means connected to said support column for holding said support column in position for drilling.
3. In an earth boring machine for drilling by the rotation of a rotary drill string and the transmission of axial thrust forces to said rotary drill string, said machine having a base, at least one support column and drilling means for applying rotational and axial thrust forces to said drill string thereby applying axial thrust loads to said support column, the improvement comprising:
a hinge connection between said support column and said base, said hinge connection including a pin that transmits a portion of said axial thrust loads from said support column to said base,
a first friction surface on said support column, said first friction surface on said support column being a convex arcuate surface on the end of said support column, and
a second friction surface on said base proximate said first friction surface on said support. column, said second friction surface being a concave arcuate surface on said base that receives said convex arcuate surface on the end of said support column, said first and second friction surfaces adapted to engage to transmit a portion of the axial thrust loads from said support column to said base.
4. An earth boring machine, comprising:
base means for supporting said machine,
a pair of support columns projecting from said base means,
hinge means rotatably connecting said support columns to said base means,
brace means extending from said support columns to said base means,
a drilling assembly mounted for travel along said support columns,
force means for moving said drilling assembly along said support columns,
a convex arcuate friction surface on each support column, and
concave arcuate friction surfaces on said base means proximate said convex arcuate friction surface on each support column.
5. An earth boring machine, comprising:
base means for supporting said machine,
at least one support member extending out from said base means,
drilling means that travel along said support member for providing drilling forces,
hinge means for rotatably connecting said support member to said base means, said hinge means being a pin construction,
brace means connecting said support member and.
member proximate said friction surface means on said base means for contacting said friction surface means on said base means, said friction surface means connected to said support member being a curved surface positioned on the end of said support member with said curved surface connected to said support member being a concave surface.
6. In an earth boring machine for drilling by the rotation of a rotary drill string and the transmission of axial thrust forces to said rotary drill string, said machine having a base, at least one support column and drilling means for applying rotational and axial thrust forces to said drill string thereby applying axial thrust loads to said support column, the improvementcomprising:
a hinge connection between said support column and said base, said hinge'connection including a pin that transmits a portion of said axial thrust loads from said support column to said base,
a first friction surface on said support column, said first friction surface on said support column being a concave arcuate surface on the end of said support column, and
a second friction surface on said base proximate said first friction surface on said support column, said second friction surface being a convex arcuate surface on said base that receives said concave arcuate surface on the end of said support column, said first and second friction surfaces adapted to engage to transmit a portion of the axial thrust loads from said support column to said base.

Claims (6)

1. An earth boring machine, comprising: base means for supporting said machine, at least one support member extending out from said base means, drilling means that travel along said support member for providing drilling forces, hinge means for rotatably connecting said support member to said base means, said hinge means being a pin connection, brace means connecting said support member and said base means, a friction surface means on said base means, said friction surface means on said base means being a curved surface immediately below said support member with said curved surface on said base means being a concave surface, and a friction surface means connected to said support member proximate said friction Surface means on said base means for contacting said friction surface means on said base means, said friction surface means connected to said support member being a curved surface positioned on the end of said support member with said curved surface connected to said support member being a convex surface.
2. An earth boring machine for drilling by rotation of a rotary drill string, comprising: machine base means for supporting said machine, a support column extending upward from said machine base means, a rotary drive assembly mounted for travel along said support column for rotating the rotary drill string, force means connected between said support column and said drive assembly for moving said rotary drive assembly along said support column, a convex surface on the lower end of said support column, a concave surface on said machine base means proximate the convex surface on said support column, pin connection means for rotatably connecting said support column to said machine base means, and brace means connected to said support column for holding said support column in position for drilling.
3. In an earth boring machine for drilling by the rotation of a rotary drill string and the transmission of axial thrust forces to said rotary drill string, said machine having a base, at least one support column and drilling means for applying rotational and axial thrust forces to said drill string thereby applying axial thrust loads to said support column, the improvement comprising: a hinge connection between said support column and said base, said hinge connection including a pin that transmits a portion of said axial thrust loads from said support column to said base, a first friction surface on said support column, said first friction surface on said support column being a convex arcuate surface on the end of said support column, and a second friction surface on said base proximate said first friction surface on said support column, said second friction surface being a concave arcuate surface on said base that receives said convex arcuate surface on the end of said support column, said first and second friction surfaces adapted to engage to transmit a portion of the axial thrust loads from said support column to said base.
4. An earth boring machine, comprising: base means for supporting said machine, a pair of support columns projecting from said base means, hinge means rotatably connecting said support columns to said base means, brace means extending from said support columns to said base means, a drilling assembly mounted for travel along said support columns, force means for moving said drilling assembly along said support columns, a convex arcuate friction surface on each support column, and concave arcuate friction surfaces on said base means proximate said convex arcuate friction surface on each support column.
5. An earth boring machine, comprising: base means for supporting said machine, at least one support member extending out from said base means, drilling means that travel along said support member for providing drilling forces, hinge means for rotatably connecting said support member to said base means, said hinge means being a pin construction, brace means connecting said support member and said base means, a friction surface means on said base means, said friction surface means on said base means being a curved surface immediately below said support member with said curved surface on said base means being a convex surface, and a friction surface means connected to said support member proximate said friction surface means on said base means for contacting said friction surface means on said base means, said friction surface means connected to said support member being a curved surface positioned on the end of said support member with said curved surface connected to said support member being a concave suRface.
6. In an earth boring machine for drilling by the rotation of a rotary drill string and the transmission of axial thrust forces to said rotary drill string, said machine having a base, at least one support column and drilling means for applying rotational and axial thrust forces to said drill string thereby applying axial thrust loads to said support column, the improvement comprising: a hinge connection between said support column and said base, said hinge connection including a pin that transmits a portion of said axial thrust loads from said support column to said base, a first friction surface on said support column, said first friction surface on said support column being a concave arcuate surface on the end of said support column, and a second friction surface on said base proximate said first friction surface on said support column, said second friction surface being a convex arcuate surface on said base that receives said concave arcuate surface on the end of said support column, said first and second friction surfaces adapted to engage to transmit a portion of the axial thrust loads from said support column to said base.
US00403126A 1973-10-03 1973-10-03 Adjustable drill support Expired - Lifetime US3856091A (en)

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US00403126A US3856091A (en) 1973-10-03 1973-10-03 Adjustable drill support
CA206,813A CA1004665A (en) 1973-10-03 1974-08-12 Adjustable drill support
ZA00745231A ZA7405231B (en) 1973-10-03 1974-08-14 Adjustable drill support
AU72521/74A AU485548B2 (en) 1973-10-03 1974-08-20 Adjustable drill support
GB3778174A GB1461864A (en) 1973-10-03 1974-08-29 Earth boring machine with adjustable drill supports
DE19742445977 DE2445977A1 (en) 1973-10-03 1974-09-24 DEVICE FOR EARTH DRILLING, IN PARTICULAR ADJUSTABLE DRILLING SUPPORT FOR AN EARTH DRILLING MACHINE
FR7433030A FR2246721A1 (en) 1973-10-03 1974-10-01

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CA (1) CA1004665A (en)
DE (1) DE2445977A1 (en)
FR (1) FR2246721A1 (en)
GB (1) GB1461864A (en)
ZA (1) ZA7405231B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108691510A (en) * 2018-05-29 2018-10-23 三重型装备有限公司 Anchor driving machine drilling machine spatial position angle regulation positioning device and anchor driving machine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1504441A (en) * 1919-10-06 1924-08-12 Internat Earth Boring Machine Auger-supporting mechanism for earth-boring machines
US2162553A (en) * 1937-11-13 1939-06-13 Worthington Pump & Mach Corp Portable drilling rig
US2692756A (en) * 1950-07-29 1954-10-26 Ingersoll Rand Co Mounting for rock drills
US3539024A (en) * 1968-08-09 1970-11-10 Brown & Root Apparatus for drilling inclined boreholes with drill bit support
US3650339A (en) * 1969-09-15 1972-03-21 Richard J Selfe Slant hole drilling rig
US3780816A (en) * 1972-03-14 1973-12-25 Dresser Ind Earth boring machine with tandem thrust cylinders

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1504441A (en) * 1919-10-06 1924-08-12 Internat Earth Boring Machine Auger-supporting mechanism for earth-boring machines
US2162553A (en) * 1937-11-13 1939-06-13 Worthington Pump & Mach Corp Portable drilling rig
US2692756A (en) * 1950-07-29 1954-10-26 Ingersoll Rand Co Mounting for rock drills
US3539024A (en) * 1968-08-09 1970-11-10 Brown & Root Apparatus for drilling inclined boreholes with drill bit support
US3650339A (en) * 1969-09-15 1972-03-21 Richard J Selfe Slant hole drilling rig
US3780816A (en) * 1972-03-14 1973-12-25 Dresser Ind Earth boring machine with tandem thrust cylinders

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AU7252174A (en) 1976-02-26
CA1004665A (en) 1977-02-01
GB1461864A (en) 1977-01-19
CA1004665A1 (en)
ZA7405231B (en) 1975-08-27
DE2445977A1 (en) 1975-04-17
FR2246721A1 (en) 1975-05-02

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Owner name: TAMROCK CANADA INC., A CORP. OF ONTARIO, CANADA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:DRESSER INDUSTRIES, INC., A DE. CORP.;REEL/FRAME:004634/0252

Effective date: 19860909