EP0066891B1 - Tige de forage à amortissement de bruit - Google Patents

Tige de forage à amortissement de bruit Download PDF

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Publication number
EP0066891B1
EP0066891B1 EP82105048A EP82105048A EP0066891B1 EP 0066891 B1 EP0066891 B1 EP 0066891B1 EP 82105048 A EP82105048 A EP 82105048A EP 82105048 A EP82105048 A EP 82105048A EP 0066891 B1 EP0066891 B1 EP 0066891B1
Authority
EP
European Patent Office
Prior art keywords
drilling rod
mass
rubber
masses
individual masses
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
Application number
EP82105048A
Other languages
German (de)
English (en)
Other versions
EP0066891A2 (fr
EP0066891A3 (en
Inventor
Günther Dr.-Ing. Kluge
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.)
RAG AG
Original Assignee
Ruhrkohle AG
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 DE19813122968 external-priority patent/DE3122968A1/de
Priority claimed from DE19813133286 external-priority patent/DE3133286A1/de
Application filed by Ruhrkohle AG filed Critical Ruhrkohle AG
Publication of EP0066891A2 publication Critical patent/EP0066891A2/fr
Publication of EP0066891A3 publication Critical patent/EP0066891A3/de
Application granted granted Critical
Publication of EP0066891B1 publication Critical patent/EP0066891B1/fr
Expired 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D17/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D17/11—Arrangements of noise-damping means
    • 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
    • E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
    • E21B17/006—Accessories for drilling pipes, e.g. cleaners

Definitions

  • the invention relates to an arrangement for noise reduction during operation of impact drills used in particular in underground mining and tunnel construction by increasing the resistance of the boring bar used between the hammer drill and drill bit with a known polygonal, round or elliptical cross section against the generation of acoustic natural vibrations by means of additional masses permanently attached to the boring bar .
  • the sound radiation from the rotary hammer could already be largely reduced by a whole series of measures, e.g. due to a more compact design and thus a reduced surface area, replacement of sheet metal parts by plastic parts and in particular through noise reduction measures in the path of the compressed air emerging from the hammer drill.
  • FR-A-1452240 proposed to surround the upper end of tool inserts of compressed air-operated impact devices - as regards the boring bar in the present case - with a casing made of elastic material, this casing being in one piece or in several parts in the form of a series of rings made of elastic material is formed with annular spaces of the same width located between them.
  • a metallic sleeve is to be pushed on and pressed on.
  • DE-OS 2920139 takes a step in the direction of directly suppressing the formation of acoustic natural vibrations in a boring bar, which proposes to largely dampen the radiation of mechanical vibrational energy by covering the entire length of the boring bar with a plastic sheathing, and using additional masses applied to it in sections to generate noticeable resistance of the boring bar arrangement to the formation of acoustic boring bar vibrations.
  • Such an arrangement leads to a considerable increase in weight of the drill rod arrangement, on the other hand, as for the removal of the cuttings from the borehole, requires a drill bit with an enlarged diameter compared to the operation of the same drill arrangement with a simple drill rod.
  • the present invention has set itself the task of achieving an optimal sound damping of the boring bar arrangement without undue loss of performance of the entire drilling machine arrangement.
  • a sleeve-like metallic mass bundle consisting of two individual masses permanently separated by an only pushed-on sleeve-like spacer made of rubber, plastic or a metal tube piece coated with rubber or plastic, for example by Pressing, if necessary after previously arranging rubber or plastic rings between the boring bar and individual mass to increase the slip resistance, is fastened, both the - preferably similar - individual masses for themselves and the mass bundle as a whole in relation to the total length of the boring bar being short and in proportion to the mass of the boring bar are designed to represent a noticeable additional mass.
  • the particular advantage of this arrangement is that from the outset it significantly limits the occurrence of acoustic vibrations of the boring bar - especially in the range of higher frequencies of the sound wave spectrum - and thus already results in a noise reduction comparable to that of a boring bar that is completely damped with rubber or plastic, without a loss of performance due to the to have to accept the necessary increase in the drill bit diameter for the removal of the cuttings when using a coated boring bar.
  • Another advantage of the invention is that the concentration of the additional masses attached to the boring bar directly in front of the hammer drill causes a significantly lower loss of power compared to a continuous distribution of the additional masses (damping) over the entire length of the boring bar, and even no loss of power for selected - permissible - operating states or greater drilling performance compared to an undamped boring bar results - even if the total additional mass in the case of the present invention or a continuous distribution over the entire boring bar length is of the same order of magnitude.
  • two metallic individual masses (4, 5) are pressed onto these at a defined distance so that the attachment can withstand a load of at least 5 t after the Pressing between the boring bar and individual masses of rubber or plastic rings (7) have been introduced to increase the slip resistance.
  • the distance between the individual masses is defined by a spacer (6), which consists of rubber, plastic or a metal tube piece coated on the inside with rubber or plastic and is pushed onto the boring bar between the individual masses before it is pressed on.
  • the following exemplary data have been used so far:

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  • 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)

Claims (4)

1. Arrangement ayant pour objet l'amortissement de bruit pour des machines à forer à percussion enployées en particulier dans les mines au fond et la construction de tunnels, à l'aide d'une augmentation de la résistance de la tige de forage d'un profil connu facultatif, soit polygonal, rond ou bien elliptique, et qui est insérée entre marteau et couronne de fleuret, afin de réduire la formation d'oscillations acoustiques propres, moyennant de masses supplémentaires appliquées sur la tige de forage et y fixées d'une façon permanente, caractérisé en ce que directement devant la queue (2) de la tige de forage (1) qui est insérée dans le marteau, une combinaison de masses (3) similaire à une douille et constituée par deux masses individuelles (4, 5) séparées par une pièce d'écartement coulissante (6) en caoutchouc, matière synthétique ou bien par un tube métallique avec révêtement intérieur au caoutchouc ou produit synthétique, est fixée sur la tige d'une façon durable - par exemple par pression - le cas échéant après disposition préalable d'anneaux de caoutchouc ou matière synthétique entre tige de forage et masses individuelles (4, 5) pour augmenter la caractéristique anti-glissement - d'une manière à ce que les masses individuelles (4, 5) seules, étant de préférence identiques, ainsi que la combinaison de masses (3) en tout sont conçues d'une façon à représenter une courte distance par rapport à la longueur totale de la tige de forage (1), toutefois une masse supplémentaire sensible par rapport à la masse de la tige de forage.
2. Arrangement d'après la revendication 1, caractérisé en ce que préalablement à la fixation des masses individuelles (4, 5), d'une conception similaire à une douille, des anneaux en caoutchouc ou en matière plastique sont fixées sur la tige de forage.
3. Arrangement d'après la revendication 1, caractérisé en ce que les masses individuelles (4, 5) sont identiques quant à la matière, la masse et les dimensions géométriques dans les limites de précision de fabrication.
4. Arrangement d'après la revendication 1, caractérisé en ce que les masses individuelles (4, 5) peuvent présenter des différences non seulement en ce qui concerne la matière, mais encore la masse et dimensions géométriques.
EP82105048A 1981-06-10 1982-06-09 Tige de forage à amortissement de bruit Expired EP0066891B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3122968 1981-06-10
DE19813122968 DE3122968A1 (de) 1981-06-10 1981-06-10 "laermgedaempfte bohrstange"
DE19813133286 DE3133286A1 (de) 1981-08-22 1981-08-22 Daempfungselement fuer bohrstangen
DE3133286 1981-08-22

Publications (3)

Publication Number Publication Date
EP0066891A2 EP0066891A2 (fr) 1982-12-15
EP0066891A3 EP0066891A3 (en) 1984-01-18
EP0066891B1 true EP0066891B1 (fr) 1986-03-12

Family

ID=25793801

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82105048A Expired EP0066891B1 (fr) 1981-06-10 1982-06-09 Tige de forage à amortissement de bruit

Country Status (2)

Country Link
EP (1) EP0066891B1 (fr)
DE (1) DE3269795D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2553697B1 (fr) * 1983-10-24 1986-03-14 Charbonnages De France Dispositif d'insonorisation d'un fleuret de foration
US8342264B1 (en) 2009-03-09 2013-01-01 J.H. Fletcher & Co. Device for reducing drilling noise and related methods
EP3048239A1 (fr) 2015-01-26 2016-07-27 Sandvik Intellectual Property AB Tige de guidage de forage résistant à une déviation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE507310A (fr) *
FR1452240A (fr) * 1965-07-23 1966-02-25 Montabert Ets Perfectionnement aux outils pour marteaux pneumatiques
US3819168A (en) * 1972-06-07 1974-06-25 Allied Chem Drill shaft
SE390188C (sv) * 1973-12-03 1979-10-08 Sandvik Ab Borrstang for slaende bergborrning
US3926265A (en) * 1974-06-10 1975-12-16 Hydroacoustic Inc Drill steel for percussive drilling devices
DE2602021A1 (de) * 1976-01-21 1977-07-28 Ruhrkohle Ag Schallgedaempfte bohrausruestung zur herstellung von sprengschuessen, insbesondere fuer den untertageberg- und -tunnelbau
DE2851160A1 (de) * 1978-11-25 1980-06-04 Wacker Werke Kg Vorrichtung zum mindern der geraeuschentwicklung an den werkzeugen von bohr- und aufbruchhaemmern
DE2920139C2 (de) * 1979-05-18 1986-10-02 Ruhrkohle Ag, 4300 Essen Schlagbohrstange

Also Published As

Publication number Publication date
DE3269795D1 (en) 1986-04-17
EP0066891A2 (fr) 1982-12-15
EP0066891A3 (en) 1984-01-18

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