EP0475171A3 - Hydraulically operated percussion mechanism - Google Patents

Hydraulically operated percussion mechanism Download PDF

Info

Publication number
EP0475171A3
EP0475171A3 EP19910114231 EP91114231A EP0475171A3 EP 0475171 A3 EP0475171 A3 EP 0475171A3 EP 19910114231 EP19910114231 EP 19910114231 EP 91114231 A EP91114231 A EP 91114231A EP 0475171 A3 EP0475171 A3 EP 0475171A3
Authority
EP
European Patent Office
Prior art keywords
contact
conduit
pressure
stroke
control
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.)
Granted
Application number
EP19910114231
Other languages
German (de)
Other versions
EP0475171A2 (en
EP0475171B1 (en
Inventor
Robert-Jan Dr.-Ing. Bartels
Hans-Dieter Piotrowski
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.)
SIG Plastics GmbH and Co KG
Original Assignee
Krupp Maschinentechnik GmbH
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 Krupp Maschinentechnik GmbH filed Critical Krupp Maschinentechnik GmbH
Publication of EP0475171A2 publication Critical patent/EP0475171A2/en
Publication of EP0475171A3 publication Critical patent/EP0475171A3/en
Application granted granted Critical
Publication of EP0475171B1 publication Critical patent/EP0475171B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

The object of the invention is to configure a percussion mechanism in such a way that the number of blows - and hence the return stroke and the individual impact energy of the percussion piston - is matched automatically to changing working conditions via an internal control system as a function of the contact pressure on the tool insertion end. <??>For this purpose the invention proposes to hold a contact-pressure control element (31) at least temporarily in contact with the insertion end (12) under the action of a resetting arrangement (31a, 22) acting in the striking direction (arrow 18) and, via this contact-pressure control element, to connect a control conduit (35) either to a pressure conduit (22) or to a balanced return conduit (25). <??>Via the control conduit, a switching element (30) can be actuated in such a way that the control device (4) alternately switching over the movement of the piston performs the reversing movement into the working-stroke position at an earlier or later point in time during the return stroke (arrow 19) of the percussion piston, thereby triggering the working stroke of the percussion piston in the striking direction. <IMAGE>
EP91114231A 1990-09-08 1991-08-24 Hydraulically operated percussion mechanism Expired - Lifetime EP0475171B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4028595A DE4028595A1 (en) 1990-09-08 1990-09-08 HYDRAULICALLY OPERATED PERFORMANCE
DE4028595 1990-09-08

Publications (3)

Publication Number Publication Date
EP0475171A2 EP0475171A2 (en) 1992-03-18
EP0475171A3 true EP0475171A3 (en) 1992-05-20
EP0475171B1 EP0475171B1 (en) 1995-10-11

Family

ID=6413902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91114231A Expired - Lifetime EP0475171B1 (en) 1990-09-08 1991-08-24 Hydraulically operated percussion mechanism

Country Status (5)

Country Link
US (1) US5129466A (en)
EP (1) EP0475171B1 (en)
JP (1) JPH05138549A (en)
AT (1) ATE128895T1 (en)
DE (2) DE4028595A1 (en)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5398772A (en) * 1993-07-01 1995-03-21 Reedrill, Inc. Impact hammer
SE508064C2 (en) * 1993-10-15 1998-08-17 Atlas Copco Rock Drills Ab Rock drilling device with reflex damper
DE4343589C1 (en) * 1993-12-21 1995-04-27 Klemm Guenter Fluid operated hammer
ES2144125T3 (en) * 1994-02-28 2000-06-01 Berema Atlas Copco Ab VALVE SYSTEM IN COMPRESSED AIR ENGINES.
DE4424081C2 (en) * 1994-07-08 1996-08-14 Klemm Bohrtech Fluid operated hammer
ES2154341T3 (en) * 1995-06-21 2001-04-01 Hydropulsor Ab PERCUSSION MACHINE
US5752571A (en) * 1995-12-15 1998-05-19 Sapozhnikov; Zinoviy A. Apparatus for generating impacts
KR100260308B1 (en) * 1997-06-11 2000-07-01 최해성 Hydraulic hammer having improved seal ring
JP3817617B2 (en) * 1999-05-10 2006-09-06 新日本製鐵株式会社 Drilling device
DE19923680B4 (en) * 1999-05-22 2004-02-26 Atlas Copco Construction Tools Gmbh Method for determining the operating time and the operating state of a hydraulic impact unit, in particular hydraulic hammer, and device for carrying out the method
US6308779B1 (en) 1999-09-16 2001-10-30 Mcneilly A. Keith Hydraulically driven fishing jars
AUPR430201A0 (en) * 2001-04-09 2001-05-17 Russell Mineral Equipment Pty Ltd Linerbolt removing tool
US6932166B1 (en) * 2002-12-03 2005-08-23 Paul Kirsch Pneumatic tool
FI116968B (en) * 2004-07-02 2006-04-28 Sandvik Tamrock Oy Procedure for control of impactor, program product and impactor
FI121027B (en) * 2004-09-24 2010-06-15 Sandvik Mining & Constr Oy Procedure for controlling striking rock drilling, software product and rock drilling device
FI123740B (en) * 2005-01-05 2013-10-15 Sandvik Mining & Constr Oy A method for controlling a pressurized fluid impactor and impactor
FI118052B (en) * 2005-06-27 2007-06-15 Sandvik Tamrock Oy A method and software product for positioning a drilling unit and a rock drilling machine
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
SE530781C2 (en) * 2007-01-11 2008-09-09 Atlas Copco Rock Drills Ab Rock drilling equipment and method associated with this
SE534815C2 (en) * 2010-05-03 2012-01-10 Atlas Copco Rock Drills Ab Rock drill with damper piston
SE535801C2 (en) * 2011-04-27 2012-12-27 Atlas Copco Rock Drills Ab Percussion, rock drill and drill rig
CN105916633B (en) * 2014-01-31 2017-11-14 古河凿岩机械有限公司 Fluid pressure type percussion mechanism
KR102317232B1 (en) * 2020-01-08 2021-10-22 주식회사 현대에버다임 Hydraulic Breaker

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658455A1 (en) * 1976-12-23 1978-06-29 Krupp Gmbh PRESSURIZED IMPACT GEAR WITH REMOTE-CONTROLLED LIFT ADJUSTMENT
EP0080446A2 (en) * 1981-11-20 1983-06-01 Atlas Copco Aktiebolag Method of controlling an impact motor and an impact motor
DE3523219C1 (en) * 1985-06-28 1986-06-26 Ing. Günter Klemm, Spezialunternehmen für Bohrtechnik, 5962 Drolshagen Hydraulic excavator

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2355617A1 (en) * 1975-12-18 1978-01-20 Montabert Roger Percussion tool with bit operated by double acting piston - has stepped dia. annular chamber filled with incompressible fluid to absorb shock
US4187917A (en) * 1977-11-30 1980-02-12 Hydroacoustics, Inc. Pile driver
US4231434A (en) * 1978-02-21 1980-11-04 Justus Edgar J Hydraulic impact device
US4314612A (en) * 1978-07-20 1982-02-09 Battelle Development Corporation Hydraulic linear impact tool
SE420057B (en) * 1980-02-20 1981-09-14 Atlas Copco Ab HYDRAULIC SHIPPING WITH POSSIBILITY TO REGULATE SHOCK ENERGY
US4429751A (en) * 1981-10-26 1984-02-07 Conmaco, Inc. Control system for pile hammers
US4466493A (en) * 1981-12-17 1984-08-21 Hed Corporation Reciprocating linear fluid motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2658455A1 (en) * 1976-12-23 1978-06-29 Krupp Gmbh PRESSURIZED IMPACT GEAR WITH REMOTE-CONTROLLED LIFT ADJUSTMENT
EP0080446A2 (en) * 1981-11-20 1983-06-01 Atlas Copco Aktiebolag Method of controlling an impact motor and an impact motor
DE3523219C1 (en) * 1985-06-28 1986-06-26 Ing. Günter Klemm, Spezialunternehmen für Bohrtechnik, 5962 Drolshagen Hydraulic excavator

Also Published As

Publication number Publication date
EP0475171A2 (en) 1992-03-18
JPH05138549A (en) 1993-06-01
DE4028595C2 (en) 1993-08-05
EP0475171B1 (en) 1995-10-11
DE59106668D1 (en) 1995-11-16
ATE128895T1 (en) 1995-10-15
US5129466A (en) 1992-07-14
DE4028595A1 (en) 1992-03-12

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