SE503595C2 - Compressed air toll for rock boring - has central bore threaded onto shaft with compressed air vessel having outlet valve supplying air from piston into chamber without damaging drill or its head - Google Patents

Compressed air toll for rock boring - has central bore threaded onto shaft with compressed air vessel having outlet valve supplying air from piston into chamber without damaging drill or its head

Info

Publication number
SE503595C2
SE503595C2 SE9303182A SE9303182A SE503595C2 SE 503595 C2 SE503595 C2 SE 503595C2 SE 9303182 A SE9303182 A SE 9303182A SE 9303182 A SE9303182 A SE 9303182A SE 503595 C2 SE503595 C2 SE 503595C2
Authority
SE
Sweden
Prior art keywords
drill bit
drill
piston
compressed air
chamber
Prior art date
Application number
SE9303182A
Other languages
Swedish (sv)
Other versions
SE9303182D0 (en
SE9303182L (en
Inventor
Alvar Bengtsson
Original Assignee
Alvar Bengtsson
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 Alvar Bengtsson filed Critical Alvar Bengtsson
Priority to SE9303182A priority Critical patent/SE503595C2/en
Publication of SE9303182D0 publication Critical patent/SE9303182D0/en
Publication of SE9303182L publication Critical patent/SE9303182L/en
Publication of SE503595C2 publication Critical patent/SE503595C2/en

Links

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
    • E21B12/00—Accessories for drilling tools
    • 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
    • E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
    • E21B19/18—Connecting or disconnecting drill bit and drilling pipe

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)
  • Percussive Tools And Related Accessories (AREA)

Abstract

- (Dwg.1/1)

Claims (1)

1. il sus 595 dels en roterande rörelse och en slagrörelse i axiell led., Härigenom kommer borrkronan att pressas hårt fast på centrumborrens koniska del borrkronan (3) är försedd med ett antal hårdmetall skär position (2), Dessa hårdmetallskär måste slipas med vissa tidsintervallerr För att möjliggöra slipning måste borrkronan tagas loss från centrumborren. Olika metoder finns att medelst handkraft få loss borrkronan. Det vanligast förekommande sättet är att sätta centrumborrets spets mot en sten och medelst handslägga slå mot Uppfinningen undanröjer dessa nackdelar samtidigt som det uppnås ett snabbt och säkert sätt att få loss borrkronan från centrumborren utan att delarna skadas. Konstruktionen består av följande huvuddelar : En cylindrisk kammare position (7) i vars bakre gavel (10) är fastsvetsat en rundstång (8) och vars främre del är försedd med en gänga (5) som passa gängan i centrumborren (1). l kammaren (7) främre del finns en kolv (4) rörlig i kammarens axiella led och löpande på uppfinningen arbetar på följande sätt: Centrumborret (1) med fastsittande borrkrona (3) skruvas på stången (8), Luftbehållaren (15) laddas med tryckluft varvid ventilen (11) skall vara stängd, När erforderligt tryck erhållits i behållaren stängs ventilen (13). Ventilen (11) öppnas varvid kolven 9 accelererar och träffar kolven (4) som slår loss borrkronan (3) Framför borrkronan sattes ett fångstdon av elastiskt material som fångar upp borrkronan Hela anordningen monteras pa stativ med Stödben sa att kammaren lutar med gaveln (10) i anvandandet PATENTKRAV 1 Tryckluftsdrivet verktyg för losstagning av borrkrona med en primarkolv (9) axiellt rorlig i en cylindrisk kammare (7) och páverkande en sekundar kolv (4) som överför slagenergin till borrkronan (3), kannetecknad av att Centrumborret (1) med fastsittande borrkrona (3) gangas pa en rundstång (8) som 'ar tastsvetsad i den cylindriska kammarens gavel (10) 503 595 2 2 Tryckluftsdrwet verktyg for |osstagmng av borrkronor ent patentkrav 1, kànnetecknat därav att det under verktyget ar fastsatt en uppladdnrngsbar tryckluftsbehållare (15) som wa en ventil (11) medelst en rorledning (12) är forbunden med verktygets cylindnska kammare (7) 3 Tryckluftsdrivet verktyg enl något av foregående patentkrav kannetecknat darav att det framfor centrum borret hnns ett fångstdon av elastiskt material så utformat att det fångar upp borrkronan Publiceringsbrld; Fig1. il sus 595 partly a rotating movement and an impact movement in axial direction., Hereby the drill bit will be pressed firmly on the conical part of the center drill the drill bit (3) is provided with a number of cemented carbide inserts position (2). time intervals To enable grinding, the drill bit must be removed from the center drill. There are various methods of removing the drill bit by hand. The most common way is to place the tip of the center drill against a stone and hit the invention with a sledgehammer. The invention obviates these disadvantages while at the same time achieving a quick and safe way of removing the drill bit from the center drill without damaging the parts. The construction consists of the following main parts: A cylindrical chamber position (7) in the rear end of which (10) is welded to a round bar (8) and the front part of which is provided with a thread (5) which fits the thread in the center drill (1). In the front part of the chamber (7) there is a piston (4) movable in the axial joint of the chamber and continuously according to the invention works as follows: The center drill (1) with fixed drill bit (3) is screwed onto the rod (8), the air container (15) is loaded with compressed air whereby the valve (11) must be closed. When the required pressure has been obtained in the container, the valve (13) is closed. The valve (11) is opened, whereby the piston 9 accelerates and hits the piston (4) which loosens the drill bit (3). In front of the drill bit was placed a catcher of elastic material which catches the drill bit. The whole device is mounted on a stand with support legs in use PATENT CLAIM 1 Compressed air-driven tool for detaching the drill bit with a primary piston (9) axially movable in a cylindrical chamber (7) and actuating a secondary piston (4) which transmits the impact energy to the drill bit (3), The fixed drill bit (3) is mounted on a round bar (8) which is key-welded in the end of the cylindrical chamber (10) 503 595 2 (15) as a valve (11) by means of a pipeline (12) is connected to the cylindrical chamber of the tool (7) 3 Pneumatic tool according to any one of the preceding claims may be characterized in that in front of the center of the drill there is a catcher of elastic material so designed that it catches the drill bit Publication plate; FIG 1.1.
SE9303182A 1993-09-30 1993-09-30 Compressed air toll for rock boring - has central bore threaded onto shaft with compressed air vessel having outlet valve supplying air from piston into chamber without damaging drill or its head SE503595C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SE9303182A SE503595C2 (en) 1993-09-30 1993-09-30 Compressed air toll for rock boring - has central bore threaded onto shaft with compressed air vessel having outlet valve supplying air from piston into chamber without damaging drill or its head

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9303182A SE503595C2 (en) 1993-09-30 1993-09-30 Compressed air toll for rock boring - has central bore threaded onto shaft with compressed air vessel having outlet valve supplying air from piston into chamber without damaging drill or its head

Publications (3)

Publication Number Publication Date
SE9303182D0 SE9303182D0 (en) 1993-09-30
SE9303182L SE9303182L (en) 1995-03-31
SE503595C2 true SE503595C2 (en) 1996-07-15

Family

ID=20391257

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9303182A SE503595C2 (en) 1993-09-30 1993-09-30 Compressed air toll for rock boring - has central bore threaded onto shaft with compressed air vessel having outlet valve supplying air from piston into chamber without damaging drill or its head

Country Status (1)

Country Link
SE (1) SE503595C2 (en)

Also Published As

Publication number Publication date
SE9303182D0 (en) 1993-09-30
SE9303182L (en) 1995-03-31

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Legal Events

Date Code Title Description
NUG Patent has lapsed