EP0080446A3 - Method of controlling an impact motor and an impact motor - Google Patents

Method of controlling an impact motor and an impact motor Download PDF

Info

Publication number
EP0080446A3
EP0080446A3 EP82850229A EP82850229A EP0080446A3 EP 0080446 A3 EP0080446 A3 EP 0080446A3 EP 82850229 A EP82850229 A EP 82850229A EP 82850229 A EP82850229 A EP 82850229A EP 0080446 A3 EP0080446 A3 EP 0080446A3
Authority
EP
European Patent Office
Prior art keywords
impact motor
controlling
drill
reflected
damping piston
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.)
Withdrawn
Application number
EP82850229A
Other languages
German (de)
French (fr)
Other versions
EP0080446A2 (en
Inventor
Axel Gunnar Wijk
Kurt Holger Andersson
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.)
Atlas Copco AB
Original Assignee
Atlas Copco 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 AB filed Critical Atlas Copco AB
Publication of EP0080446A2 publication Critical patent/EP0080446A2/en
Publication of EP0080446A3 publication Critical patent/EP0080446A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/06—Means for driving the impulse member
    • B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
    • 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
    • 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
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof

Landscapes

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

Abstract

In a rock drill, the feed force is transmitted from the hous­ ing 11 of the rock drill to the drill stem or drill stem adapter 14 via damping piston 17. The damping piston 17 rebounces by the reflected compressive shock waves and the rebounce is sensed and used to control a control pin 48 which adjusts the stroke length of the hammer piston 13 so that the reflected shock wave energy is minimized.
EP82850229A 1981-11-20 1982-11-12 Method of controlling an impact motor and an impact motor Withdrawn EP0080446A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8106907A SE8106907L (en) 1981-11-20 1981-11-20 WAY TO CONTROL A PERFORMANCE AND PERFORMANCE
SE8106907 1981-11-20

Publications (2)

Publication Number Publication Date
EP0080446A2 EP0080446A2 (en) 1983-06-01
EP0080446A3 true EP0080446A3 (en) 1985-01-23

Family

ID=20345077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82850229A Withdrawn EP0080446A3 (en) 1981-11-20 1982-11-12 Method of controlling an impact motor and an impact motor

Country Status (3)

Country Link
EP (1) EP0080446A3 (en)
JP (1) JPS5890476A (en)
SE (1) SE8106907L (en)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE8207405L (en) * 1982-12-27 1984-06-28 Atlas Copco Ab MOUNTAIN DRILLING AND METHOD OF OPTIMIZING MOUNTAIN DRILLING
FR2595972B2 (en) * 1985-07-16 1989-10-20 Montabert Ets PERCUSSION APPARATUS
FI861851A (en) * 1986-05-02 1987-11-03 Tampella Oy Ab ANORDNING FOER ETT AXIALLAGER I EN BORRMASKIN.
FR2602448B1 (en) * 1986-08-07 1988-10-21 Montabert Ets METHOD FOR REGULATING THE PERCUSSION PARAMETERS OF THE STRIKE PISTON OF AN APPARATUS MOVED BY AN INCOMPRESSIBLE PRESSURE FLUID, AND APPARATUS FOR CARRYING OUT SAID METHOD
SE463193B (en) * 1989-02-21 1990-10-22 Atlas Copco Mct Ab DEVICE WITH BATTERY MACHINERY
FR2647870B1 (en) * 1989-06-06 1991-09-06 Eimco Secoma HYDRAULIC PERCUSSION APPARATUS WITH RETURNING SHOCK WAVE DAMPING DEVICE
EP0471649A1 (en) * 1990-08-16 1992-02-19 SIG Schweizerische Industrie-Gesellschaft Fluid pressure-operated hammer
DE4028595A1 (en) * 1990-09-08 1992-03-12 Krupp Maschinentechnik HYDRAULICALLY OPERATED PERFORMANCE
FI91944C (en) * 1991-07-09 1994-09-12 Bretec Oy Hydraulic impact hammer
FR2727891B1 (en) * 1994-12-08 1997-01-24 Montabert Ets METHOD AND APPARATUS FOR REGULATING THE STRIKING STROKE OF A PERCUSSION APPARATUS MOUSED BY AN INCOMPRESSIBLE PRESSURE FLUID
DE19545708A1 (en) * 1995-12-07 1997-06-12 Krupp Bautechnik Gmbh Method for influencing the operating behavior of a fluid-operated hammer mechanism and hammer mechanism suitable for carrying out the method
FI121622B (en) * 2000-04-28 2011-02-15 Robit Rocktools Ltd Oy Method and arrangement for impact drilling equipment
FR2837523B1 (en) * 2002-03-19 2004-05-14 Montabert Sa ROTO-PERCUTANT HYDRAULIC PERFORATOR HAMMER
FI115552B (en) 2002-11-05 2005-05-31 Sandvik Tamrock Oy Arrangement for controlling rock drilling
FI116968B (en) 2004-07-02 2006-04-28 Sandvik Tamrock Oy Procedure for control of impactor, program product and impactor
SE529615C2 (en) * 2006-02-20 2007-10-09 Atlas Copco Rock Drills Ab Percussion and rock drill and method for controlling the stroke of the piston
SE530524C2 (en) * 2006-09-13 2008-07-01 Atlas Copco Rock Drills Ab Percussion, rock drilling machine including such percussion and method for controlling percussion
FI122300B (en) * 2008-09-30 2011-11-30 Sandvik Mining & Constr Oy Method and arrangement for a rock drilling machine
SE534815C2 (en) * 2010-05-03 2012-01-10 Atlas Copco Rock Drills Ab Rock drill with damper piston
US20140144660A1 (en) 2010-09-10 2014-05-29 Rockdrill Services Australia Pty Ltd. Rock drill
SE535801C2 (en) 2011-04-27 2012-12-27 Atlas Copco Rock Drills Ab Percussion, rock drill and drill rig
SE537838C2 (en) * 2014-02-14 2015-11-03 Atlas Copco Rock Drills Ab Damping device for percussion, percussion and rock drill
JP6495672B2 (en) * 2015-01-30 2019-04-03 古河ロックドリル株式会社 Hydraulic striking device, valve timing switching method and valve port setting method
FR3077752B1 (en) * 2018-02-14 2020-01-31 Montabert ROTO-PERCUTANT HYDRAULIC PERFORATOR PROVIDED WITH A CONTROL CHAMBER PERMANENTLY CONNECTED TO A LOW PRESSURE ACCUMULATOR
EP3822037A1 (en) * 2019-11-15 2021-05-19 Hilti Aktiengesellschaft Impact device assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304449A1 (en) * 1975-03-18 1976-10-15 Atlas Copco Ab REBOUND DAMPER FOR PERCUSSION TOOL
DE2654200A1 (en) * 1975-12-18 1977-06-23 Roger Montabert IMPACT DEVICE
EP0035005A1 (en) * 1980-02-20 1981-09-02 Atlas Copco Aktiebolag A hydraulically operated impact device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304449A1 (en) * 1975-03-18 1976-10-15 Atlas Copco Ab REBOUND DAMPER FOR PERCUSSION TOOL
DE2654200A1 (en) * 1975-12-18 1977-06-23 Roger Montabert IMPACT DEVICE
EP0035005A1 (en) * 1980-02-20 1981-09-02 Atlas Copco Aktiebolag A hydraulically operated impact device

Also Published As

Publication number Publication date
JPS5890476A (en) 1983-05-30
SE8106907L (en) 1983-05-21
EP0080446A2 (en) 1983-06-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): AT CH DE FR GB IT LI SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ATLAS COPCO AKTIEBOLAG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19850924

RIN1 Information on inventor provided before grant (corrected)

Inventor name: WIJK, AXEL GUNNAR

Inventor name: ANDERSSON, KURT HOLGER