WO2010082871A1 - Dispositif d'amortissement pour un dispositif à percussion, dispositif à percussion et machine de forage - Google Patents

Dispositif d'amortissement pour un dispositif à percussion, dispositif à percussion et machine de forage Download PDF

Info

Publication number
WO2010082871A1
WO2010082871A1 PCT/SE2009/000508 SE2009000508W WO2010082871A1 WO 2010082871 A1 WO2010082871 A1 WO 2010082871A1 SE 2009000508 W SE2009000508 W SE 2009000508W WO 2010082871 A1 WO2010082871 A1 WO 2010082871A1
Authority
WO
WIPO (PCT)
Prior art keywords
damping
choking
piston
chamber
percussion
Prior art date
Application number
PCT/SE2009/000508
Other languages
English (en)
Inventor
Erik Jonsson
Fredrik Larsson
Daniel Gustavsson
Jakob Wallin
Original Assignee
Atlas Copco Rock Drills Ab
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 Atlas Copco Rock Drills Ab filed Critical Atlas Copco Rock Drills Ab
Priority to EP09838481.1A priority Critical patent/EP2379283A4/fr
Publication of WO2010082871A1 publication Critical patent/WO2010082871A1/fr

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
    • E21B1/00—Percussion drilling
    • E21B1/38—Hammer piston type, i.e. in which the tool bit or anvil is hit by an impulse member
    • 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
    • B25D17/24—Damping the reaction force
    • B25D17/245—Damping the reaction force using a fluid
    • 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
    • B25D17/06—Hammer pistons; Anvils ; Guide-sleeves for pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14—Control devices for the reciprocating piston
    • B25D9/145—Control devices for the reciprocating piston for hydraulically actuated hammers having an accumulator
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2217/00—Details of, or accessories for, portable power-driven percussive tools
    • B25D2217/0011—Details of anvils, guide-sleeves or pistons
    • B25D2217/0019—Guide-sleeves

Definitions

  • the invention concerns a damping device for a percussion device according to the preamble of claim 1.
  • the invention also concerns a percussion device and a drilling machine.
  • the aim of a damping device in a drilling machine is to protect the drilling machine from reflecting shock waves that occur during drilling. Further, the damping device aims to provide enhanced conditions for transfer of the feed force over the drill steel to the rock, in order to ensure rock contact during drilling.
  • a damping device for percussive machines including a first chamber being connected to an accumulator and a second chamber for damping reflexes from the drill steel.
  • a damping piston is with snug fit receivable into the second chamber, which results in that the reflexes of the rock are damped by liquid being pressed out through the slot being formed between the piston and the machine housing when the piston moves in a direction opposite to the striking direction.
  • a non return valve is arranged between the chambers and is directed such that a liquid flow is allowed from the first chamber to the second chamber when the piston moves out from the second chamber.
  • damping piston before a strike is intended to be positioned in a so called floating position, around which it can move in the striking direction as well as in the opposite direction.
  • a damping chamber, wherein a damping piston is received is connected to an accumulator, and a previously known representative -.of this category of dampers acts as a hydraulic spring, wherein, in practice, no energy reception or energy consumption exists for achieving real damping of the reflexes emanating from drilling, which results in the formation of an unwanted oscillating system.
  • the supply conduit for pressure liquid is connected to the accumulator and thereby the supply conduit is connected to the damping chamber over said non return valve.
  • damping is achieved in correspondence to what is described above.
  • the ring surface being provided with at least one float hole for establishing a floating position of the damping piston, it is achieved that the damping piston will act so as to move a strike receiving component, such a drill steel adapter, to a striking position being advantageous for the percussion device, whereby low variation of the percussion energy of the percussion device will be the result.
  • the return choking device and/or the second choking device are adjustable for the adaption of the damping device to prevailing requirements of the percussion device.
  • the adjustability can be achieved through means that are per se known to the person skilled in the art. In principle, the smaller the area for energy reception that a choking device exhibits, the greater hardness the damper will have .
  • Fig. Ia diagrammatically shows an axial section of a damping device according to the invention in a percussion device of a drilling machine
  • Figs. Ib and Ic show a detail of damping device in Fig. Ia with the damping piston in different positions
  • Fig. 2 diagrammaticalIy shows second embodiment of a damping device according to the invention
  • Fig. 3 diagrammatically shows a third embodiment of a damping device according to the invention.
  • a damping device in connection with a percussion device, wherein a percussive piston 2 is arranged to act in a striking direction R (to the left in Fig. Ia) on a drill steal adapter 1.
  • a damping piston 8 being arranged surrounding a percussive piston 2 acts axially against the drill steal adapter 1 over a drill bushing 3.
  • shock wave reflexes will tend to drive the drill steal adapter 1 in a direction opposite to the striking direction R, said shock wave reflexes being transmitted over the drill bushing 3 to the damping piston 8.
  • the damping piston 8 has a piston portion 6, which is received in a ring-shaped damping chamber 7, which in turn is positioned radially outside an extended portion 8' of the damping piston 8.
  • a flow q of pressure liquid is continuously supplied to the damping chamber 7 from a (not shown) pump through the supply conduit 14.
  • an accumulator 13 which can be of a conventional kind, and which has been loaded with a suitable counter-pressure of a gas volume on one side of a flexible membrane, on the other side of which pressure liquid can be supplied/discharged.
  • the supply conduit 14 is connected to the damping chamber 7 over a system including a choking device (second choking device) 11, which is connected in parallel to a non return valve 12, which is directed so as to allow a liquid flow to the damping chamber 7 but to prevent flows in direction from the damping chamber 7.
  • a choking device second choking device
  • non return valve 12 which is directed so as to allow a liquid flow to the damping chamber 7 but to prevent flows in direction from the damping chamber 7.
  • a return channel which includes: at least one float hole 10 (suitably two float holes being positioned diametrically to each other and possibly even more float holes) , for ensuring that the damping piston 8 will occupy a desired floating position, a return chamber 9 and a conduit emanating from the return chamber 9, which finally debouches in a tank 5.
  • This conduit can possibly include a return choking device 4, which is the case in the embodiments in Figs . Ia and 2.
  • the tank 5 can be connected to said pump (not shown) for pressure liquid.
  • a certain reflow of liquid to the damping chamber, and thereby reduction of pressure variations there inside, can also to certain extent be obtained through the arrangement of float holes 10, second choking device 16 in the form of a control slot and return chamber 9 when the pressure in the damping chamber momentary is reduced because of a received reflex from the rock.
  • a damping piston 8 is shown where it has essentially occupied said floating position, wherein a control edge 6', radially most outwardly on the piston portion 6, in co-operation with a mouth of one (or more) float hole forms a variable float hole choking device 20 in dependence of the axial position of the damping piston.
  • the damping piston will move with small axial movements approximately around the position shown in Fig. Ib (the floating position) .
  • This control slot 16 is here indicated as a first choking device in a first choking channel of the damping device.
  • a pressure increase will occur in the damping chamber 7.
  • No liquid will pass through the non return valve, since this non return valve only allow a flow in the direction to the damping chamber. Because of the pressure increase, however, liquid will be pressed on the one hand through the first choking device being comprised of the choking slot 16, on the other hand through the second choking device being comprised of the choking device 11.
  • the embodiment in Fig. 2 differs from the one in Fig. Ia only through the absence of the second choking device. In this embodiment, all energy reception is thus in the first choking device 16, as explained above, and which is established during a movement to the right, opposite to the striking direction R of the damping piston 8 from the positioned shown in Fig. 2.
  • the embodiment in Fig. 3 differs from the one in Fig. Ia in that the supply conduit for pressure liquid 14 directly adjoins to the damping chamber 7. In this case, all recharging of the accumulator thus is over the second choking device 11. In this case it can also exist that a certain pressure fluctuation in the damping chamber 7 can be transferred into the supply conduit 14.
  • the invention can be modified within the scope of the following claims, and as an example the percussion device can be constructed otherwise and even without a conventional percussive piston. In that case it can be a so called impulse machine . Transfer of shock wave reflexes to the damping piston can also be arranged otherwise.
  • the components in the machine housing can be arranged otherwise and, for example, the ring- shaped component outside the most extended portion of the damping piston can be an integrated part of the machine housing itself.
  • the liquids that are used with the invention are the usual hydraulic liquids for similar applications.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

L'invention porte sur un dispositif d'amortissement pour un dispositif à percussion avec une direction d'impact (R), le dispositif d'amortissement comprenant un piston d'amortissement (8) pour une action dans une direction axiale à l'encontre d'un outil devant être entraîné du dispositif à percussion, le piston d'amortissement (8) ayant une partie piston (6) qui est reçue à l'intérieur d'une chambre d'amortissement (7), à laquelle sont reliés un conduit d'alimentation (14) pour un fluide sous pression et un accumulateur (13), et un canal de retour étant relié à la chambre d'amortissement. L'accumulateur (13) est relié à la chambre d'amortissement (7) par l'intermédiaire d'un clapet anti-retour (12), qui est agencé pour permettre un écoulement dans la direction vers la chambre d'amortissement, et au moins un dispositif d'étranglement (16, 20) dans au moins un canal d'étranglement étant agencé pour étrangler un liquide sous pression s'écoulant vers l'extérieur à partir de la chambre d'amortissement (7) en réponse à un déplacement de piston d'amortissement dans une direction opposée à la direction d'impact (R).
PCT/SE2009/000508 2009-01-16 2009-12-04 Dispositif d'amortissement pour un dispositif à percussion, dispositif à percussion et machine de forage WO2010082871A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09838481.1A EP2379283A4 (fr) 2009-01-16 2009-12-04 Dispositif d'amortissement pour un dispositif à percussion, dispositif à percussion et machine de forage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0900045A SE533344C2 (sv) 2009-01-16 2009-01-16 Dämpningsanordning för slagverk, slagverk och borrmaskin
SE0900045-6 2009-01-16

Publications (1)

Publication Number Publication Date
WO2010082871A1 true WO2010082871A1 (fr) 2010-07-22

Family

ID=42339986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/000508 WO2010082871A1 (fr) 2009-01-16 2009-12-04 Dispositif d'amortissement pour un dispositif à percussion, dispositif à percussion et machine de forage

Country Status (3)

Country Link
EP (1) EP2379283A4 (fr)
SE (1) SE533344C2 (fr)
WO (1) WO2010082871A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2394795A1 (fr) * 2010-06-10 2011-12-14 HILTI Aktiengesellschaft Machine-outil
JP2017505723A (ja) * 2014-02-14 2017-02-23 アトラス コプコ ロツク ドリルス アクチボラグ 衝撃装置用の減衰装置、衝撃装置及び削岩機
JPWO2017110793A1 (ja) * 2015-12-24 2018-06-28 古河ロックドリル株式会社 油圧打撃装置
FR3077752A1 (fr) * 2018-02-14 2019-08-16 Montabert Perforateur hydraulique roto-percutant pourvu d’une chambre de commande reliee en permanence a un accumulateur basse pression
SE1951244A1 (en) * 2019-10-31 2021-04-20 Epiroc Drilling Tools Ab Pneumatic drill hammer comprising a boost chamber and a drilling rig comprising such a drill hammer
CN114502330A (zh) * 2019-11-15 2022-05-13 喜利得股份公司 冲击机构布置
FR3120247A1 (fr) 2021-03-01 2022-09-02 Montabert Perforateur hydraulique roto-percutant pourvu d’un piston de butée
FR3120248A1 (fr) 2021-03-01 2022-09-02 Montabert Perforateur hydraulique roto-percutant pourvu d’un piston de butée et d’une chambre de freinage

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741072A (en) * 1971-02-17 1973-06-26 G Romell Hydraulic fluid actuated percussion tool
US4871035A (en) * 1986-10-15 1989-10-03 Atlas Copco Aktiebolag Damping device for a percussion rock drilling machine
US5479996A (en) * 1993-10-15 1996-01-02 Atlas Copco Rocktech Ab Rock drilling device with recoil damper
US5944120A (en) * 1997-11-10 1999-08-31 Caterpillar Inc. Hydraulic hammer assembly having low vibration characteristics

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355617A1 (fr) * 1975-12-18 1978-01-20 Montabert Roger Machine de percussion
FI66460C (fi) * 1982-10-08 1984-10-10 Tampella Oy Ab Tryckmediedriven slagapparat
FI861851A (fi) * 1986-05-02 1987-11-03 Tampella Oy Ab Anordning foer ett axiallager i en borrmaskin.
FI84701C (fi) * 1990-02-23 1992-01-10 Tampella Oy Ab Anordning foer axiallagret i en borrmaskin.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3741072A (en) * 1971-02-17 1973-06-26 G Romell Hydraulic fluid actuated percussion tool
US4871035A (en) * 1986-10-15 1989-10-03 Atlas Copco Aktiebolag Damping device for a percussion rock drilling machine
US5479996A (en) * 1993-10-15 1996-01-02 Atlas Copco Rocktech Ab Rock drilling device with recoil damper
US5944120A (en) * 1997-11-10 1999-08-31 Caterpillar Inc. Hydraulic hammer assembly having low vibration characteristics

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2379283A4 *

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8939229B2 (en) 2010-06-10 2015-01-27 Hilti Aktiengesellschaft Power tool
EP2394795A1 (fr) * 2010-06-10 2011-12-14 HILTI Aktiengesellschaft Machine-outil
US10456898B2 (en) 2014-02-14 2019-10-29 Epiroc Rock Drills Aktiebolag Damping device for a percussion device, percussion device and rock drilling machine
JP2017505723A (ja) * 2014-02-14 2017-02-23 アトラス コプコ ロツク ドリルス アクチボラグ 衝撃装置用の減衰装置、衝撃装置及び削岩機
KR102056992B1 (ko) * 2015-12-24 2019-12-17 후루까와 로크 드릴 가부시끼가이샤 유압타격장치
EP3395504A4 (fr) * 2015-12-24 2019-02-20 Furukawa Rock Drill Co., Ltd. Dispositif de percussion hydraulique
CN108367419A (zh) * 2015-12-24 2018-08-03 古河凿岩机械有限公司 液压冲击装置
JPWO2017110793A1 (ja) * 2015-12-24 2018-06-28 古河ロックドリル株式会社 油圧打撃装置
US11034010B2 (en) 2015-12-24 2021-06-15 Furukawa Rock Drill Co., Ltd. Hydraulic hammering device
FR3077752A1 (fr) * 2018-02-14 2019-08-16 Montabert Perforateur hydraulique roto-percutant pourvu d’une chambre de commande reliee en permanence a un accumulateur basse pression
WO2019158834A1 (fr) 2018-02-14 2019-08-22 Montabert Perforateur hydraulique roto-percutant pourvu d'une chambre de commande reliée en permanence à un accumulateur basse pression
CN111712353B (zh) * 2018-02-14 2023-03-21 蒙塔博特公司 设置有与低压蓄能器永久连接的控制室的旋转冲击式液压穿孔器
CN111712353A (zh) * 2018-02-14 2020-09-25 蒙塔博特公司 设置有与低压蓄能器永久连接的控制室的旋转冲击式液压穿孔器
AU2019221107B2 (en) * 2018-02-14 2024-04-04 Montabert S.A. Rotary-percussive hydraulic drill provided with a control chamber which is permanently connected to a low-pressure accumulator
US11724379B2 (en) 2018-02-14 2023-08-15 Montabert Rotary-percussive hydraulic perforator provided with a control chamber permanently connected to a low-pressure accumulator
SE543622C2 (en) * 2019-10-31 2021-04-20 Epiroc Drilling Tools Ab Pneumatic drill hammer comprising a boost chamber and a drilling rig comprising such a drill hammer
SE1951244A1 (en) * 2019-10-31 2021-04-20 Epiroc Drilling Tools Ab Pneumatic drill hammer comprising a boost chamber and a drilling rig comprising such a drill hammer
US11959361B2 (en) 2019-10-31 2024-04-16 Epiroc Drilling Tools Aktiebolag Pneumatic drill hammer comprising a boost chamber and a drilling rig comprising such a drill hammer
CN114502330A (zh) * 2019-11-15 2022-05-13 喜利得股份公司 冲击机构布置
US12115637B2 (en) 2019-11-15 2024-10-15 Hilti Aktiengesellschaft Impact mechanism arrangement
FR3120248A1 (fr) 2021-03-01 2022-09-02 Montabert Perforateur hydraulique roto-percutant pourvu d’un piston de butée et d’une chambre de freinage
EP4052854A1 (fr) 2021-03-01 2022-09-07 Montabert Perforateur hydraulique roto-percutant pourvu d'un piston de butée
EP4053374A1 (fr) 2021-03-01 2022-09-07 Montabert Perforateur hydraulique roto-percutant pourvu d'un piston de butée et d'une chambre de freinage
FR3120247A1 (fr) 2021-03-01 2022-09-02 Montabert Perforateur hydraulique roto-percutant pourvu d’un piston de butée
US11697197B2 (en) 2021-03-01 2023-07-11 Montabert Hydraulic rotary-percussive hammer drill provided with a stop piston
US11999039B2 (en) 2021-03-01 2024-06-04 Montabert Rotary-percussive hydraulic perforator provided with a stop piston and a braking chamber

Also Published As

Publication number Publication date
SE0900045A1 (sv) 2010-07-17
EP2379283A4 (fr) 2013-09-04
EP2379283A1 (fr) 2011-10-26
SE533344C2 (sv) 2010-08-31

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