WO2018217093A1 - Apparatus and method for attaching a drill body to a slot drill - Google Patents

Apparatus and method for attaching a drill body to a slot drill Download PDF

Info

Publication number
WO2018217093A1
WO2018217093A1 PCT/NO2018/050130 NO2018050130W WO2018217093A1 WO 2018217093 A1 WO2018217093 A1 WO 2018217093A1 NO 2018050130 W NO2018050130 W NO 2018050130W WO 2018217093 A1 WO2018217093 A1 WO 2018217093A1
Authority
WO
WIPO (PCT)
Prior art keywords
drill
slot
fastener
drill body
attaching
Prior art date
Application number
PCT/NO2018/050130
Other languages
French (fr)
Inventor
Ole Gunnar Fjelde
Original Assignee
Comrod As
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 Comrod As filed Critical Comrod As
Publication of WO2018217093A1 publication Critical patent/WO2018217093A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/041—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with cylinder saws, e.g. trepanning; saw cylinders, e.g. having their cutting rim equipped with abrasive particles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/22—Sockets or holders for poles or posts
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/658—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing
    • E01F9/673—Upright bodies, e.g. marker posts or bollards; Supports for road signs characterised by means for fixing for holding sign posts or the like
    • E01F9/685—Subsoil means, e.g. foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00—Foundations as substructures
    • E02D27/32—Foundations for special purposes
    • E02D27/42—Foundations for poles, masts or chimneys
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2207—Sockets or holders for poles or posts not used
    • E04H12/2215—Sockets or holders for poles or posts not used driven into the ground
    • E04H12/2223—Sockets or holders for poles or posts not used driven into the ground by screwing
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/22—Sockets or holders for poles or posts
    • E04H12/2253—Mounting poles or posts to the holder
    • E04H12/2269—Mounting poles or posts to the holder in a socket
    • 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
    • E21B10/00—Drill bits
    • E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
    • E21B10/48—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of core type
    • 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
    • E21B10/00—Drill bits
    • E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
    • E21B10/627—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements
    • E21B10/633—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable with plural detachable cutting elements independently detachable

Definitions

  • This invention relates to a device for attaching a drill body to a tubular slot drill which is arranged to drill in the ground.
  • the invention also comprises a method for attaching a drill body to a tubular slot drill.
  • Patent documents WO2004/101914 and DE29703858 disclose slot drills with fixed teeth integrated in the slot drill itself.
  • a tooth termed a drill body below, which is made of a relatively hard material, such as diamond or tungsten carbide, is attached to the, in the position of application, lower end portion of the slot drill.
  • a form of soldering is often used to attach the drill body to the end portion. So-called hard soldering has been used, using a silver-containing binder.
  • soldering new drill bodies and desoldering worn drill bodies are conditional on the slot drill being demounted from its driving unit and carried to a suitable place where the soldering operations can take place under controlled conditions.
  • the invention has for its object to remedy or reduce at least one of the drawbacks of the prior art or at least provide a useful alternative to the prior art.
  • the device and the method according to the invention include releasably attaching the drill body to the slot drill. Tests have been done, in which the drill body has been sol- dered to an intermediate piece which has been bolted to the end portion of the slot drill. A solution like that enables replacement of drill bodies without the slot drill having to be demounted from the driving unit to which it is mounted.
  • the invention in a first aspect, relates to a tubular slot drill, which includes a lower end portion, arranged to drill in the ground, the slot drill further including a drill body, the drill body being placed in the lower end portion, and the drill body being detachable from the slot drill .
  • detachable is meant that the drill body may be attached to or removed from the slot drill by means of a tool and without melting processes having to be used.
  • the replacement of worn drill bodies is thereby considerably simplified as the worn drill bodies may be detached and new ones be fitted to the slot drill at the drilling site by means of a simple tool. No demounting of the slot drill from the driving unit or heating of the slot drill or drill bodies is required.
  • the detachable drill body may be attached to the slot drill by means of at least one fastener.
  • a fastener are understood all the fasteners that will be known to a person skilled in the art.
  • the at least one fastener comprises a screw connection.
  • the at least one fastener may consist of a bolt.
  • the at least one fastener may consist of a rivet, a hook or a wedge.
  • the invention relates more specifically to a method for attaching a drill body to a tubular slot drill which is arranged to drill in the ground, the method comprising :
  • the method may comprise attaching the detachable drill body to the lower portion of the slot drill by means of at least one fastener.
  • the drill body in such a way that it may, for example, be bolted directly to the slot drill, but as relatively brittle materials are involved here, it is advantageous to use an intermediate piece.
  • the device and method according to the invention solve the task by attaching the drill body to the slot drill in a relatively simple and cost-effective way.
  • Figure 1 shows schematically a vertical section of a slot drill with a suitable driving unit during the drilling of a slot-shaped opening in the ground;
  • Figure 2 shows a section I-I of figure 1
  • Figure 3 shows a view II-II of figure 2.
  • the view shows a drill body which is attached, according to the prior art, to a slot drill;
  • Figure 4 shows the section I-I of figure 1, but after the slot drill has been provided with a drill body which is attached to the slot drill according to the invention.
  • Figure 5 shows a section IV-IV of figure 4.
  • the reference numeral 1 indicates a drill which is being moved into the ground 4 by means of a driving unit 2.
  • the ground 4 may consist of, for example rock, unconsolidated masses or bog, alternatively a combination of these.
  • the driving unit 2 is typically trued up and secured to the ground 4 or to some other suitable device, not shown, after which the driving unit 2, which is typically electrically or hydraulically driven, moves the slot drill under rotation into the ground 4. A slot- shaped opening 6 with an even cross section is thereby formed. The slot drill 1 is then pulled out of the opening 6.
  • FIG 2 a section is shown, in which a drill body 8 is attached to the lower end portion 10 of the slot drill 1 by means of prior art, for example by hard soldering.
  • hard soldering both soldering and desoldering must be performed on a demounted slot drill, which takes a relatively long time.
  • Figure 3 shows a side view of the slot drill 1 of figure 2.
  • FIG 4 a section is shown, in which the slot drill 1 is provided with drill bodies 8 which are attached to the slot drill according to the invention, see also figure 5.
  • the drill bodies 8 are shown attached to an intermediate piece 12 by means of hard soldering .
  • the intermediate piece 12 is bolted to the slot drill by means of fasteners 14, here in the form of bolts 16.
  • fasteners 14 here in the form of bolts 16.
  • a transverse groove 18 has been made in the end portion 10, cooperating with a bead 20 on the intermediate piece 12. As shown, the bead 20 projects into the groove 18.
  • the drill body 8 has been recessed somewhat into the intermediate piece 12 to ensure improved attachment to the intermediate piece 12.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Paleontology (AREA)
  • General Engineering & Computer Science (AREA)
  • Earth Drilling (AREA)
  • Drilling Tools (AREA)

Abstract

A device and a method for attaching a drill body (8) to a tubular slot drill (1) which is arranged to drill in the ground (4), the slot drill (1) being provided, at its lower end portion (10), with at least one drill body (8) detachable from the slot drill (1).

Description

APPARATUS AND METHOD FOR ATTACHING A DRILL BODY TO A SLOT DRILL
This invention relates to a device for attaching a drill body to a tubular slot drill which is arranged to drill in the ground. The invention also comprises a method for attaching a drill body to a tubular slot drill.
It is known to drill a slot-shaped opening in the ground, for example to be able to insert a tubular composite mast or an adapter belonging to a composite mast into the slot, the slot constituting a mounting device between the composite mast and the ground.
Patent documents WO2004/101914 and DE29703858 disclose slot drills with fixed teeth integrated in the slot drill itself.
A tooth, termed a drill body below, which is made of a relatively hard material, such as diamond or tungsten carbide, is attached to the, in the position of application, lower end portion of the slot drill. A form of soldering is often used to attach the drill body to the end portion. So-called hard soldering has been used, using a silver-containing binder.
It is obvious that soldering new drill bodies and desoldering worn drill bodies are conditional on the slot drill being demounted from its driving unit and carried to a suitable place where the soldering operations can take place under controlled conditions.
The invention has for its object to remedy or reduce at least one of the drawbacks of the prior art or at least provide a useful alternative to the prior art.
The object is achieved through the features that are specified in the description below and in the claims that follow.
The device and the method according to the invention include releasably attaching the drill body to the slot drill. Tests have been done, in which the drill body has been sol- dered to an intermediate piece which has been bolted to the end portion of the slot drill. A solution like that enables replacement of drill bodies without the slot drill having to be demounted from the driving unit to which it is mounted.
The invention is defined by the dependent claims. The independent claims define advantageous embodiments of the invention.
In a first aspect, the invention relates to a tubular slot drill, which includes a lower end portion, arranged to drill in the ground, the slot drill further including a drill body, the drill body being placed in the lower end portion, and the drill body being detachable from the slot drill .
By detachable is meant that the drill body may be attached to or removed from the slot drill by means of a tool and without melting processes having to be used.
The replacement of worn drill bodies is thereby considerably simplified as the worn drill bodies may be detached and new ones be fitted to the slot drill at the drilling site by means of a simple tool. No demounting of the slot drill from the driving unit or heating of the slot drill or drill bodies is required.
The detachable drill body may be attached to the slot drill by means of at least one fastener. By a fastener are understood all the fasteners that will be known to a person skilled in the art.
In a preferred embodiment, the at least one fastener comprises a screw connection. The at least one fastener may consist of a bolt.
The at least one fastener may consist of a rivet, a hook or a wedge.
In a second aspect, the invention relates more specifically to a method for attaching a drill body to a tubular slot drill which is arranged to drill in the ground, the method comprising :
- releasably attaching the drill body to the slot drill.
The method may comprise attaching the detachable drill body to the lower portion of the slot drill by means of at least one fastener.
In some cases, it is practical to form the drill body in such a way that it may, for example, be bolted directly to the slot drill, but as relatively brittle materials are involved here, it is advantageous to use an intermediate piece. The device and method according to the invention solve the task by attaching the drill body to the slot drill in a relatively simple and cost-effective way.
In what follows, examples of preferred embodiments and methods are described, which are visualized in the accompanying drawings, in which
Figure 1 shows schematically a vertical section of a slot drill with a suitable driving unit during the drilling of a slot-shaped opening in the ground;
Figure 2 shows a section I-I of figure 1;
Figure 3 shows a view II-II of figure 2. The view shows a drill body which is attached, according to the prior art, to a slot drill;
Figure 4 shows the section I-I of figure 1, but after the slot drill has been provided with a drill body which is attached to the slot drill according to the invention; and
Figure 5 shows a section IV-IV of figure 4.
In the drawings, the reference numeral 1 indicates a drill which is being moved into the ground 4 by means of a driving unit 2. The ground 4 may consist of, for example rock, unconsolidated masses or bog, alternatively a combination of these.
The driving unit 2 is typically trued up and secured to the ground 4 or to some other suitable device, not shown, after which the driving unit 2, which is typically electrically or hydraulically driven, moves the slot drill under rotation into the ground 4. A slot- shaped opening 6 with an even cross section is thereby formed. The slot drill 1 is then pulled out of the opening 6.
In figure 2, a section is shown, in which a drill body 8 is attached to the lower end portion 10 of the slot drill 1 by means of prior art, for example by hard soldering. In hard soldering, both soldering and desoldering must be performed on a demounted slot drill, which takes a relatively long time.
Figure 3 shows a side view of the slot drill 1 of figure 2.
In figure 4, a section is shown, in which the slot drill 1 is provided with drill bodies 8 which are attached to the slot drill according to the invention, see also figure 5.
In figures 4 and 5, the drill bodies 8 are shown attached to an intermediate piece 12 by means of hard soldering . The intermediate piece 12 is bolted to the slot drill by means of fasteners 14, here in the form of bolts 16. To further ensure that the drill body 8 is prevented from becoming displaced relative to the end portion 10, a transverse groove 18 has been made in the end portion 10, cooperating with a bead 20 on the intermediate piece 12. As shown, the bead 20 projects into the groove 18.
The drill body 8 has been recessed somewhat into the intermediate piece 12 to ensure improved attachment to the intermediate piece 12.
It should be noted that all the above-mentioned embodiments illustrate the invention, but do not limit it, and persons skilled in the art may construct many alternative embodiments without departing from the scope of the attached claims. In the claims, reference numbers in brackets are not to be regarded as restrictive. The use of the verb "to comprise" and its different forms does not exclude the presence of elements or steps that are not mentioned in the claims. The indefinite article "a" or "an" before an element does not exclude the presence of several such elements.
The fact that some features are indicated in mutually different dependent claims does not indicate that a combination of these features cannot be used with advantage.

Claims

C l a i m s
A tubular slot drill (1), which includes a lower end portion (10), arranged to drill in the ground (4), the slot drill (1) further including a drill body (8), c h a r a c t e r i z e d i n that:
- the drill body (8) is placed in the lower end portion (10); and
- the drill body (8) is detachable from the slot drill (1) .
The slot drill according to claim 1, wherein the detachable drill body (8) is attached to an intermediate piece (12).
The slot drill according to claim 2, wherein the intermediate piece (12) includes a bead (20) projecting into a transverse groove (18) in the end portion (10).
The slot drill according to claim 1, wherein the detachable drill body (8) is attached to the slot drill (1) by means of at least one fastener (14).
The slot drill according to claim 3, wherein the at least one fastener (14) is a screw connection.
The slot drill according to claim 3, wherein the at least one fastener (14) is a bolt (16).
The slot drill according to claim 3, wherein the at least one fastener (14) is a rivet.
The slot drill according to claim 3, wherein the at least one fastener (14) is a hook.
The slot drill according to claim 3, wherein the at least one fastener (14) is a wedge.
PCT/NO2018/050130 2017-05-22 2018-05-22 Apparatus and method for attaching a drill body to a slot drill WO2018217093A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20170830A NO343341B1 (en) 2017-05-22 2017-05-22 Tubular slotted drill comprising a lower end portion adapted to drill into a bedrock.
NO20170830 2017-05-22

Publications (1)

Publication Number Publication Date
WO2018217093A1 true WO2018217093A1 (en) 2018-11-29

Family

ID=64395805

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO2018/050130 WO2018217093A1 (en) 2017-05-22 2018-05-22 Apparatus and method for attaching a drill body to a slot drill

Country Status (2)

Country Link
NO (1) NO343341B1 (en)
WO (1) WO2018217093A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491844A (en) * 1967-03-20 1970-01-27 Hughes Tool Co Drag type core drill for pavement or rock having disparate inclusions
US3999620A (en) * 1975-05-30 1976-12-28 Watson, Incorporated Core barrel
US4072437A (en) * 1976-06-24 1978-02-07 Garland Smith Engineering Co., Inc. Removable cutter tooth

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29703858U1 (en) * 1997-03-03 1997-07-24 Jonas, Alfred, 21037 Hamburg Pile stand
CA2428549A1 (en) * 2003-05-14 2004-11-14 Resin Systems Inc. Method of installing poles in a rock surface
GB0516906D0 (en) * 2005-08-18 2005-09-28 Seacore Ltd Methods and apparatus for the installation of foundation piles
GB0624285D0 (en) * 2006-12-05 2007-01-10 Seacore Ltd Methods and apparatus for the installation colums/piles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3491844A (en) * 1967-03-20 1970-01-27 Hughes Tool Co Drag type core drill for pavement or rock having disparate inclusions
US3999620A (en) * 1975-05-30 1976-12-28 Watson, Incorporated Core barrel
US4072437A (en) * 1976-06-24 1978-02-07 Garland Smith Engineering Co., Inc. Removable cutter tooth

Also Published As

Publication number Publication date
NO20170830A1 (en) 2018-11-23
NO343341B1 (en) 2019-02-04

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