NO343341B1 - Tubular slotted drill comprising a lower end portion adapted to drill into a bedrock. - Google Patents

Tubular slotted drill comprising a lower end portion adapted to drill into a bedrock. Download PDF

Info

Publication number
NO343341B1
NO343341B1 NO20170830A NO20170830A NO343341B1 NO 343341 B1 NO343341 B1 NO 343341B1 NO 20170830 A NO20170830 A NO 20170830A NO 20170830 A NO20170830 A NO 20170830A NO 343341 B1 NO343341 B1 NO 343341B1
Authority
NO
Norway
Prior art keywords
drill
slot
slotting
fastening element
end part
Prior art date
Application number
NO20170830A
Other languages
Norwegian (no)
Other versions
NO20170830A1 (en
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
Priority to NO20170830A priority Critical patent/NO343341B1/en
Priority to PCT/NO2018/050130 priority patent/WO2018217093A1/en
Publication of NO20170830A1 publication Critical patent/NO20170830A1/en
Publication of NO343341B1 publication Critical patent/NO343341B1/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

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

Anordning og fremgangsmåte for festing av et borelegeme (8) til et rørformet slissebor (1) som er innrettet til å kunne bore i grunnen (4), og hvor slisseboret (1) ved sitt nedre endeparti (10) er forsynt med minst ett fra slisseboret (1) løstagbart borelegeme (8).Apparatus and method for attaching a drill body (8) to a tubular slit (1) arranged for drilling in the ground (4), wherein the slit (1) is provided at least one from its lower end portion (10). the slotted drill (1) removable drill body (8).

Description

RØRFORMET SLISSEBOR INNRETTET TIL Å BORE I EN FJELLGRUNN TUBULAR SLOTTING DRILL DESIGNED FOR DRILLING IN A MOUNTAIN SOIL

Denne oppfinnelse vedrører et rørformet slissebor som er innrettet til å kunne bore i grunnen, hvor slisseboret omfatter et nedre endeparti med et borelegeme. This invention relates to a tubular slot drill which is designed to be able to drill into the ground, where the slot drill comprises a lower end part with a drill body.

Det er kjent å bore slisseformede åpninger i grunnen, for eksempel for å kunne forskyve en rørformet komposittmast eller adapter tilhørende en komposittmast ned i slissen, idet slissen utgjør en festeanordning mellom komposittmasten og grunnen. It is known to drill slot-shaped openings in the ground, for example to be able to move a tubular composite mast or adapter belonging to a composite mast down into the slot, the slot forming a fastening device between the composite mast and the ground.

Patentskriftene WO2004/101914 og DE29703858 viser slissebor med faste skjær som er integrert i selve slisseboret. Patent documents WO2004/101914 and DE29703858 show slotting drills with fixed cutting edges which are integrated into the slotting drill itself.

Skjær, nedenfor benevnt borelegeme, som er fremstilt av relativt hardt materiale så som diamant eller wolframkarbid, festes til slisseborets i bruksstilling nedre endeparti. Det anvendes ofte en form for lodding for å feste borelegemet til endepartiet. Såkalt hardlodding hvor det anvendes et sølvholdig bindemiddel, er benyttet. The cutting edge, referred to below as the drill body, which is made of relatively hard material such as diamond or tungsten carbide, is attached to the lower end part of the slotted drill in the use position. A form of soldering is often used to attach the drill body to the end part. So-called hard soldering, where a silver-containing binder is used, is used.

Det er innlysende at pålodding av nye borelegemer samt avlodding av slitte borelegemer, betinger at slisseboret demonteres fra sin drivenhet og fraktes til et egnet sted hvor loddeoperasjonene kan foregå under kontrollerte forhold. It is obvious that the soldering of new drill bits and the desoldering of worn drill bits require that the slot drill be dismantled from its drive unit and transported to a suitable location where the soldering operations can take place under controlled conditions.

Oppfinnelsen har til formål å avhjelpe eller å redusere i det minste én av ulempene ved kjent teknikk, eller i det minste å skaffe til veie et nyttig alternativ til kjent teknikk. The purpose of the invention is to remedy or to reduce at least one of the disadvantages of known technology, or at least to provide a useful alternative to known technology.

Formålet oppnås ved trekkene som er angitt i nedenstående beskrivelse og i de etterfølgende patentkravene. The purpose is achieved by the features indicated in the description below and in the subsequent patent claims.

Oppfinnelsen omfatter å feste borelegemet løsbart til slisseboret. Det er foretatt tester hvor borelegemet er loddet til et mellomstykke som er boltet til slisseborets endeparti. En slik løsning muliggjør utskifting av borelegemer uten at slisseboret behøver å demonteres fra drivenheten hvor det er montert. The invention includes releasably attaching the drill body to the slot drill. Tests have been carried out where the drill body is soldered to an intermediate piece which is bolted to the end part of the slotted drill. Such a solution enables the replacement of drill bodies without the slotted drill needing to be dismantled from the drive unit where it is mounted.

Oppfinnelsen er definert av de selvstendige patentkravene. De uselvstendige kravene definerer fordelaktige utførelser av oppfinnelsen. The invention is defined by the independent patent claims. The independent claims define advantageous embodiments of the invention.

Oppfinnelsen vedrører mer spesifikt et rørformet slissebor, som omfatter et nedre endeparti, innrettet til å kunne bore i grunnen, hvor slisseboret videre omfatter et borelegeme, hvor borelegemet er anbragt i det nedre endepartiet, og borelegemet er løstagbart fra slisseboret. The invention relates more specifically to a tubular slot drill, which comprises a lower end part, arranged to be able to drill into the ground, where the slot drill further comprises a drill body, where the drill body is placed in the lower end part, and the drill body is removable from the slot drill.

Med løstagbart menes at borelegemet kan festes til eller fjernes fra slisseboret ved hjelp av verktøy og uten å måtte anvende smelteprosesser. Detachable means that the drill body can be attached to or removed from the slot drill using tools and without having to use melting processes.

Utskifting av slitte borelegemer forenkles derved betydelig, idet de slitte borelegemene kan demonteres og nye monteres til slisseboret på borestedet ved hjelp av et enkelt verktøy. Ingen demontering av slisseboret fra drivenheten eller oppvarming av slissebor eller borelegemer er nødvendig. The replacement of worn drill bodies is thereby considerably simplified, as the worn drill bodies can be dismantled and new ones fitted to the slot drill at the drilling site using a simple tool. No disassembly of the slot drill from the drive unit or heating of the slot drill or drill bodies is necessary.

Det løstagbare borelegemet kan være festet til slisseboret ved hjelp av minst ett festeelement. Med festeelement forstås alle festeelementer som vil være kjent for en fagmann. The removable drill body can be attached to the slot drill by means of at least one fastening element. Fastening element means all fastening elements that will be known to a specialist.

I en foretrukket utførelsesform omfatter det minst ene festeelementet av en skrueforbindelse. Det minst ene festeelementet kan utgjøres av en bolt. In a preferred embodiment, the at least one fastening element comprises a screw connection. The at least one fastening element can consist of a bolt.

Det minst ene festeelementet kan utgjøres av en nagle, en hake eller en kile. The at least one fastening element can be made up of a rivet, a hook or a wedge.

Det beskrives også en framgangsmåte for festing av et borelegeme til et rørformet slissebor som er innrettet til å kunne bore i grunnen, og hvor fremgangsmåten omfatter: It also describes a procedure for attaching a drill body to a tubular slotted drill which is designed to be able to drill into the ground, and where the procedure includes:

- å feste et borelegeme løstagbart til slisseboret. - attaching a drill body releasably to the slot drill.

Fremgangsmåten kan omfatte å feste det løstagbare borelegemet til slisseborets nedre parti ved hjelp av minst ett festeelement. The method may comprise attaching the removable drill body to the lower part of the slot drill by means of at least one fastening element.

I noen tilfeller er det hensiktsmessig å utforme borelegemet slik at det for eksempel kan boltes direkte til slisseboret, men siden det her dreier seg om relativt sprøe materialer, er det fordelaktig å anvende et mellomstykke. In some cases, it is appropriate to design the drill body so that it can, for example, be bolted directly to the slotted drill bit, but since relatively brittle materials are involved here, it is advantageous to use an intermediate piece.

Oppfinnelsen løser oppgaven med å feste borelegemet til slisseboret på relativt enkel og kostnadseffektiv måte. The invention solves the task of attaching the drill body to the slot drill in a relatively simple and cost-effective way.

I det etterfølgende beskrives eksempler på foretrukne utførelsesformer som er anskueliggjort på medfølgende tegninger, hvor In what follows, examples of preferred embodiments are described which are illustrated in accompanying drawings, where

Fig.1 viser skjematisk et vertikalsnitt av et slissebor med en passende drivenhet under innboring av en slisseformet åpning i grunnen; Fig.1 schematically shows a vertical section of a slot drill with a suitable drive unit while drilling a slot-shaped opening in the ground;

Fig.2 viser et snitt I-I i fig.1: Fig.2 shows a section I-I in Fig.1:

Fig.3 viser et riss II-II i fig.2. Risset viser et borelegeme som ifølge kjent teknikk er festet til et slissebor. Fig.3 shows a diagram II-II in Fig.2. The drawing shows a drill body which, according to known technology, is attached to a slot drill.

Fig.4 viser snittet I-I i fig.1, men etter at slisseboret er forsynt med et borelegeme som er festet til slisseboret ifølge oppfinnelsen; og Fig.4 shows the section I-I in Fig.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

Fig.5 viser et snitt IV-IV i fig.4. Fig.5 shows a section IV-IV in Fig.4.

På tegningene betegner henvisningstallet 1 et bor som ved hjelp av en drivenhet 2 er under forskyving inn i grunnen 4. Grunnen 4 kan utgjøres for eksempel av berg, løsmasser eller myr, alternativt av kombinasjoner av disse. In the drawings, the reference number 1 denotes a drill which, with the help of a drive unit 2, is being displaced into the ground 4. The ground 4 can be made up, for example, of rock, loose masses or bog, alternatively of combinations of these.

Drivenheten 2 rettes typisk opp og festes til grunnen 4 eller til en annen passende ikke vist innretning, hvoretter drivenheten 2 som typisk er elektrisk eller hydraulisk drevet, forskyver slisseboret under rotasjon inn i grunnen 4. Derved tildannes en slisseformet åpning 6 med jevnt tverrsnitt. Slisseboret 1 trekkes deretter ut av åpningen 6. The drive unit 2 is typically straightened and attached to the ground 4 or to another suitable device not shown, after which the drive unit 2, which is typically electrically or hydraulically driven, displaces the slotted drill during rotation into the ground 4. A slot-shaped opening 6 with a uniform cross-section is thereby formed. The slot drill 1 is then pulled out of the opening 6.

I fig.2 er det vist et snitt hvor et borelegeme 8 er festet til slisseborets 1 nedre endeparti 10 ved hjelp av kjent teknikk, for eksempel ved hardlodding. Ved hardlodding må på- og avlodding utføres på et demontert slissebor, noe som krever relativ lang tid. Fig.2 shows a section where a drill body 8 is attached to the lower end part 10 of the slot drill 1 using known techniques, for example by brazing. In the case of hard soldering, soldering and desoldering must be carried out on a disassembled slot drill, which requires a relatively long time.

Fig.3 viser et sideriss av slisseboret 1 i fig.2. Fig.3 shows a side view of the slot drill 1 in Fig.2.

I fig.4 er det vist et snitt hvor slisseboret 1 er forsynt med borelegemer 8 som er festet til slisseboret ifølge oppfinnelsen, se også fig.5. Fig.4 shows a section where the slot drill 1 is provided with drill bodies 8 which are attached to the slot drill according to the invention, see also fig.5.

I fig.4 og 5 er borelegemene 8 vist festet til et mellomstykke 12 ved hjelp av hardlodding. Mellomstykket 12 er boltet fast til slisseboret ved hjelp av festeelementer 14, her i form av bolter 16. For ytterligere å sikre at borelegemet 8 hindres fra å forskyve seg i forhold til endepartiet 10, er det laget et tverrgående spor 18 i endepartiet 10 som samvirker med en vulst 20 i mellomstykket 12. Vulsten 20 rager som vist inn i sporet 18. In Fig. 4 and 5, the drill bodies 8 are shown attached to an intermediate piece 12 by means of brazing. The intermediate piece 12 is bolted to the slot drill by means of fastening elements 14, here in the form of bolts 16. To further ensure that the drill body 8 is prevented from displacing in relation to the end part 10, a transverse groove 18 has been made in the end part 10 which cooperates with a bead 20 in the middle piece 12. The bead 20 projects into the groove 18 as shown.

Borelegemet 8 er forsenket noe ned i mellomstykket 12 for å sikre et forbedret feste til mellomstykket 12. The drill body 8 is recessed somewhat into the intermediate piece 12 to ensure an improved attachment to the intermediate piece 12.

Det bør bemerkes at alle de ovennevnte utførelsesformer illustrerer oppfinnelsen, men begrenser den ikke, og fagpersoner på området vil kunne utforme mange alternative utførelsesformer uten å avvike fra omfanget av de vedlagte kravene. I kravene skal referansenumre i parentes ikke sees som begrensende. Bruken av verbet "å omfatte" og dets ulike former, ekskluderer ikke tilstedeværelsen av elementer eller trinn som ikke er nevnt i kravene. De ubestemte artiklene "en", "ei" eller "et" foran et element ekskluderer ikke tilstedeværelsen av flere slike elementer. It should be noted that all of the above embodiments illustrate the invention, but do not limit it, and those skilled in the art will be able to devise many alternative embodiments without departing from the scope of the appended claims. In the requirements, reference numbers in parentheses should not be seen as limiting. The use of the verb "to comprise" and its various forms does not exclude the presence of elements or steps not mentioned in the claims. The indefinite articles "an", "ei" or "et" before an element do not exclude the presence of several such elements.

Det faktum at enkelte trekk er anført i innbyrdes forskjellige avhengige krav, indikerer ikke at en kombinasjon av disse trekk ikke med fordel kan brukes. The fact that certain features are listed in mutually different dependent claims does not indicate that a combination of these features cannot be advantageously used.

Claims (9)

PatentkravPatent claims 1. Rørformet slissebor (1), som omfatter et nedre endeparti (10), innrettet til å kunne bore i grunnen (4), hvor slisseboret (1) videre omfatter et borelegeme (8) anbragt i det nedre endepartiet (10), k a r a k t e r i s e r t v e d a t borelegemet (8) er løstagbart fra slisseboret (1).1. Tubular slot drill (1), which comprises a lower end part (10), arranged to be able to drill into the ground (4), where the slot drill (1) further comprises a drill body (8) arranged in the lower end part (10), c h a r a c t e r i s e r t w a t the drill body (8) is removable from the slot drill (1). 2. Slissebor i henhold til krav 1, hvor det løstagbare borelegemet (8) er festet til et mellomstykke (12).2. Slotting drill according to claim 1, where the removable drill body (8) is attached to an intermediate piece (12). 3. Slissebor i henhold til krav 2, hvor mellomstykket (12) omfatter en vulst (20) som rager inn i et tverrgående spor (18) i endepartiet (10).3. Slotting drill according to claim 2, where the intermediate piece (12) comprises a bead (20) which projects into a transverse groove (18) in the end part (10). 4. Slissebor i henhold til krav 1, hvor det løstagbare borelegemet (8) er festet til slisseboret (1) ved hjelp av minst ett festeelement (14).4. Slotting drill according to claim 1, where the removable drill body (8) is attached to the slotting drill (1) by means of at least one fastening element (14). 5. Slissebor i henhold til krav 3, hvor det minst ene festeelementet (14) er en skrueforbindelse.5. Slotting drill according to claim 3, where at least one fastening element (14) is a screw connection. 6. Slissebor i henhold til krav 3, hvor det minst ene festeelementet (14) er en bolt (16).6. Slotting drill according to claim 3, where at least one fastening element (14) is a bolt (16). 7. Slissebor i henhold til krav 3, hvor det minst ene festeelementet (14) er en nagle.7. Slotting drill according to claim 3, where at least one fastening element (14) is a rivet. 8. Slissebor i henhold til krav 3, hvor det minst ene festeelementet (14) er en hake.8. Slotting drill according to claim 3, where at least one fastening element (14) is a hook. 9. Slissebor i henhold til krav 3, hvor det minst ene festeelementet (14) er en kile.9. Slotting drill according to claim 3, where the at least one fastening element (14) is a wedge.
NO20170830A 2017-05-22 2017-05-22 Tubular slotted drill comprising a lower end portion adapted to drill into a bedrock. NO343341B1 (en)

Priority Applications (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.
PCT/NO2018/050130 WO2018217093A1 (en) 2017-05-22 2018-05-22 Apparatus and method for attaching a drill body to a slot drill

Applications Claiming Priority (1)

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.

Publications (2)

Publication Number Publication Date
NO20170830A1 NO20170830A1 (en) 2018-11-23
NO343341B1 true NO343341B1 (en) 2019-02-04

Family

ID=64395805

Family Applications (1)

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

Country Status (2)

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

Citations (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
WO2004101914A1 (en) * 2003-05-14 2004-11-25 Resin Systems Inc. Method of installing poles in a rock surface
GB2429229A (en) * 2005-08-18 2007-02-21 Seacore Ltd Methods and apparatus for the installation of foundation piles
GB2444411A (en) * 2006-12-05 2008-06-04 Fugro Seacore Ltd Pile installation method

Family Cites Families (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

Patent Citations (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
WO2004101914A1 (en) * 2003-05-14 2004-11-25 Resin Systems Inc. Method of installing poles in a rock surface
GB2429229A (en) * 2005-08-18 2007-02-21 Seacore Ltd Methods and apparatus for the installation of foundation piles
GB2444411A (en) * 2006-12-05 2008-06-04 Fugro Seacore Ltd Pile installation method

Also Published As

Publication number Publication date
WO2018217093A1 (en) 2018-11-29
NO20170830A1 (en) 2018-11-23

Similar Documents

Publication Publication Date Title
US7114584B2 (en) Hollow auger head assembly
NO317067B1 (en) Combined milling and drill bit
US20180283105A1 (en) Method and system for a hole opener
US10364611B2 (en) Drill head for expanding a pilot bore in order to create a borehole
US8322795B2 (en) Miner cutting bit holding apparatus
EP1493897A3 (en) Apparatus for directional drilling
NO20120510A1 (en) DRILLS AND DRILLS INCLUDING THE SAME
WO2011059685A4 (en) Backup cutting elements on non concentric earth boring tools and related methods
NO800272L (en) SKJAEREVERKTOEY.
NO343341B1 (en) Tubular slotted drill comprising a lower end portion adapted to drill into a bedrock.
US3469641A (en) Reaming bit assembly
NO783065L (en) RINGBORKROONE FOR LADDER DRILLING IN MOUNTAINS
RU131410U1 (en) MILLING TOOL
RU2015155743A (en) TOOTH TOOTHS FOR MINING AND THE METHOD OF RIGGING THE SOLID TOOTH TOOLS FOR MINING TO THE CASE OF CEMENT CARBIDE
US20170204676A1 (en) Roof drill bit and associated coupler
KR20180000136U (en) Replaceable Drill Bit for Drilling
JP4481213B2 (en) Drilling method and connecting member used in the drilling method
US1922559A (en) Rock drill
WO2013180615A1 (en) Tool and tool holder for a dredger
CN106238781A (en) Reamer
RU170170U1 (en) DRILLING TOOL ASSEMBLY
US609107A (en) Drill for starting holes in rocks
US1978006A (en) Bit
JP6631894B1 (en) Bit for deck plate
US1269449A (en) Method of and apparatus for forming and enlarging or cavating bores.