FI20115549A0 - Impact device for rock-breaking device and method for controlling impact device - Google Patents

Impact device for rock-breaking device and method for controlling impact device

Info

Publication number
FI20115549A0
FI20115549A0 FI20115549A FI20115549A FI20115549A0 FI 20115549 A0 FI20115549 A0 FI 20115549A0 FI 20115549 A FI20115549 A FI 20115549A FI 20115549 A FI20115549 A FI 20115549A FI 20115549 A0 FI20115549 A0 FI 20115549A0
Authority
FI
Finland
Prior art keywords
percussion
rock
controlling
impact device
percussion piston
Prior art date
Application number
FI20115549A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI123187B (en
Inventor
Pekka Saukko
Antti Koskimaeki
Timo Muuttonen
Teemu Hietakari
Jorma Maeki
Original Assignee
Sandvik Mining & Constr Oy
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 Sandvik Mining & Constr Oy filed Critical Sandvik Mining & Constr Oy
Priority to FI20115549A priority Critical patent/FI123187B/en
Publication of FI20115549A0 publication Critical patent/FI20115549A0/en
Priority to EP12796938.4A priority patent/EP2718063B1/en
Priority to PCT/FI2012/050568 priority patent/WO2012168559A1/en
Application granted granted Critical
Publication of FI123187B publication Critical patent/FI123187B/en

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
    • B25D9/26—Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
    • 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
    • B25D9/16—Valve arrangements therefor
    • B25D9/18—Valve arrangements therefor involving a piston-type slide valve
    • 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
    • B25D9/16—Valve arrangements therefor
    • B25D9/20—Valve arrangements therefor involving a tubular-type slide valve
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP 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
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/005—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is coaxial with the piston
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25D—PERCUSSIVE TOOLS
    • B25D2209/00—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D2209/007—Details of portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously having a tubular-slide valve, which is not coaxial with the piston

Abstract

The invention relates to a percussion device of a rock breaking device, a method for controlling the percussion device and a rock drilling unit. The percussion device (11) comprises a percussion piston (33), the work cycle of which is controlled by means of a control valve (40, 77). During the movement of the percussion piston, a pressure pulse is generated by closing a pressure connection (Y1, Y2) from at least one impulse space (44, 45) surrounding the percussion piston. The pressure pulse is used to change the position of the valve from one extreme position to an other. The impulse space is an annular space defined in a radial direction by the percussion piston and the frame (25).The frame is further provided with at least one impulse channel (58, 59) for transmitting a pressure pulse to the pressure surface of the control valve.
FI20115549A 2011-06-07 2011-06-07 Rock-breaker impactor, method for controlling impactor FI123187B (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FI20115549A FI123187B (en) 2011-06-07 2011-06-07 Rock-breaker impactor, method for controlling impactor
EP12796938.4A EP2718063B1 (en) 2011-06-07 2012-06-07 Percussion device of rock breaking device and method for controlling percussion device
PCT/FI2012/050568 WO2012168559A1 (en) 2011-06-07 2012-06-07 Percussion device of rock breaking device and method for controlling percussion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20115549A FI123187B (en) 2011-06-07 2011-06-07 Rock-breaker impactor, method for controlling impactor
FI20115549 2011-06-07

Publications (2)

Publication Number Publication Date
FI20115549A0 true FI20115549A0 (en) 2011-06-07
FI123187B FI123187B (en) 2012-12-14

Family

ID=44206763

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20115549A FI123187B (en) 2011-06-07 2011-06-07 Rock-breaker impactor, method for controlling impactor

Country Status (3)

Country Link
EP (1) EP2718063B1 (en)
FI (1) FI123187B (en)
WO (1) WO2012168559A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103352895B (en) * 2013-06-28 2015-08-26 山河智能装备股份有限公司 A kind of hydraulic impactor
JP6438897B2 (en) * 2014-01-31 2018-12-19 古河ロックドリル株式会社 Hydraulic striking device
KR102317232B1 (en) * 2020-01-08 2021-10-22 주식회사 현대에버다임 Hydraulic Breaker
EP4043153A1 (en) * 2021-02-11 2022-08-17 Sandvik Mining and Construction Oy Percussion device and method for controlling the same
EP4191016A1 (en) * 2021-12-03 2023-06-07 Sandvik Mining and Construction Oy Valve cylinder, impact device and method
EP4261441A1 (en) * 2022-04-13 2023-10-18 Sandvik Mining and Construction Oy Control valve, impact device and method

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI107891B (en) * 1998-03-30 2001-10-31 Sandvik Tamrock Oy Impact fluid driven impactor
US20030006052A1 (en) * 2001-06-25 2003-01-09 Campbell Paul B. Valve for hydraulic rock drill
JP4494071B2 (en) * 2004-04-08 2010-06-30 株式会社テクノサカト Crusher using hydraulic pressure
FR2902684B1 (en) 2006-06-27 2010-02-26 Montabert Roger METHOD FOR SWITCHING THE STROKE STROKE OF A MU-PERCUSSION APPARATUS BY AN INCOMPRESSIBLE FLUID UNDER PRESSURE, AND APPARATUS FOR CARRYING OUT SAID METHOD
FI119398B (en) * 2006-12-21 2008-10-31 Sandvik Mining & Constr Oy The impactor,

Also Published As

Publication number Publication date
FI123187B (en) 2012-12-14
WO2012168559A1 (en) 2012-12-13
EP2718063A4 (en) 2014-12-17
EP2718063B1 (en) 2017-03-08
EP2718063A1 (en) 2014-04-16

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