EP2774727B1 - Steuerung der Arbeitsfrequenz eines Schlagwerkes - Google Patents

Steuerung der Arbeitsfrequenz eines Schlagwerkes Download PDF

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Publication number
EP2774727B1
EP2774727B1 EP14154964.2A EP14154964A EP2774727B1 EP 2774727 B1 EP2774727 B1 EP 2774727B1 EP 14154964 A EP14154964 A EP 14154964A EP 2774727 B1 EP2774727 B1 EP 2774727B1
Authority
EP
European Patent Office
Prior art keywords
control
medium
switching
piston
control device
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.)
Active
Application number
EP14154964.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2774727A1 (de
Inventor
Stefan Kaindlbauer
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.)
TMT-BBG RESEARCH und DEVELOPMENT GmbH
Original Assignee
TMT -BBG Research und Development 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 TMT -BBG Research und Development GmbH filed Critical TMT -BBG Research und Development GmbH
Priority to PL14154964T priority Critical patent/PL2774727T3/pl
Priority to RS20171150A priority patent/RS56633B1/sr
Publication of EP2774727A1 publication Critical patent/EP2774727A1/de
Application granted granted Critical
Publication of EP2774727B1 publication Critical patent/EP2774727B1/de
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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
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/16—Closures stopper-rod type, i.e. a stopper-rod being positioned downwardly through the vessel and the metal therein, for selective registry with the pouring opening
    • B22D41/20—Stopper-rod operating equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/14—Closures
    • B22D41/22—Closures sliding-gate type, i.e. having a fixed plate and a movable plate in sliding contact with each other for selective registry of their openings
    • B22D41/40—Means for pressing the plates together
    • 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
    • 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
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/12—Opening or sealing the tap holes
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/42—Constructional features of converters
    • C21C5/46—Details or accessories
    • C21C5/4653—Tapholes; Opening or plugging thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/15—Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509—Tapping equipment
    • F27D3/1527—Taphole forming equipment, e.g. boring machines, piercing tools

Definitions

  • the invention relates to a control of a hammer operated by means of a pressure medium with a means for reversing the axial pressurization of the percussion piston and the return of the medium.
  • the invention relates to a striking mechanism for a device for opening and optionally closing a tap hole in the wall of a metallurgical vessel.
  • Impact devices for an axially in both directions usable hammer device are known and are state of the art.
  • these striking mechanisms are used in facilities for opening and / or closing a taphole in a metallurgical vessel.
  • the EP 0930476 A discloses, for example, a striking mechanism with a cattail in a hammer device for the above field of use.
  • the tool is applied during use in propulsion and also in the retreat essentially with the same impact energy and impact frequency.
  • the US 5979291 A relates to a hydraulically operated impact mechanism, wherein the percussion piston strikes in one direction against the tool.
  • the invention is therefore based on the object to improve the controllability of percussion and to create and a control device by means of which the energy and the frequency of the moving percussion piston are adjustable within wide limits.
  • This goal is achieved in a control of a hammer operated by means of a pressure medium of the type mentioned in that at least one of the reversal as a return for the medium switchable piston from the percussion channel has at least one switchable means for flow control.
  • the advantages achieved with the invention are essentially to be seen in the fact that the return flow of the medium moving the piston takes place after a change in quantity control.
  • different flow openings of a switching means which are alternatively activated in the return line, the backwater of the medium can be changed for reversing, so that the time until the subsequent pressurization of the percussion piston is variable.
  • the impact force and in particular the beat frequency can be controlled, whereby a delayed reversal influences the impact energy.
  • a change in the flow rate per unit time in the return line or a flow control in this can be achieved in a simple manner, for example by a switchable means, with different cross-sections bottlenecks in the flow channel.
  • a flow rate control or a pressure curve over time takes place in the return line of the expanded medium, which changes the frequency and consequently the energy or the intensity of the strokes of the piston.
  • the switchable means can thus control the impact mechanism in each working direction and optimally adjust the tooling of a device differently.
  • switchable means for flow control for the medium are separated from each other adjustable.
  • a control device as described above can optimally meet substantially all requirements imposed on a percussion mechanism in a harsh application.
  • an inventive control of the type described for a device for opening and / or closing a taphole of a metallurgical vessel can be used.
  • the control offers the possibility, with regard to the brittle and fracture-endangered refractory lining masses of a metallurgical vessel, of creating optimal conditions for opening a tap in a melt vessel.
  • Control devices according to the invention may serve the following list of reference numerals.
  • Fig. 1 shows a control device S with a housing 1, which on both sides in Axraum a cover 13 , 11 , wherein a cover 13 with a projecting insert a medium discharge 4 is used.
  • An opposite cover 11 acts as a fastener for a switch insert 12 with a control means feed 34th in the switching insert 12 , a tubular switching means 3 is axially displaceable axially arranged, which is acted upon axially on the one hand by a spring 33 which is supported on the cover 11 , with a compressive force.
  • a control medium supply 34 pressure medium, which is effective on a directed against the spring force pressure surface on the switching means 3 , are introduced and move it against the spring force. In this way, the switching means 3, which extends into the cavity of the Um Kunststoffmaschines 2 , be positioned.
  • the reversing part 2 is arranged axially movable within limits, wherein on the use of the cover 13 and the switching insert 12 radial stop surfaces are used for the respective positioning of the switching part 2 .
  • the inner surface in the housing 1 and the outer surface of the Um putteil 2 have recesses, soft depending on the axial position of the Um Kunststoffteils 2 ways for a flow of the pressure medium or a return flow of the medium to or from percussion open.
  • a supply chamber 21 for the pressure medium is connected to a channel 22 , so that this pressure medium acts on one side of a piston in the striking mechanism.
  • the flow control means 31 controls the return flow of the medium or the time until which the pressure in the return duct 23 is lowered so that a displacement of the Um Kunststoffmaschines 2 by the pressure medium on the radial pressure surface of the part against the switching insert 12 takes place, thereby characterized the Return flow path switched off and the channel 23 is converted to the line of the pressure medium to the percussion piston.
  • Fig. 2 is a universally applicable control device for a movement of a percussion piston shown.
  • this universally applicable control device is constructed in mirror image and has in comparison with Fig. 1 centrally symmetrically constructed switching inserts 12, 12 'with switching means 3, 3' on.
  • the advantage of in Fig. 2 The control device shown is a universally controllable feeding of a piston in a percussion and thus a far-reaching adjustment of the intensity and the frequency of optionally acting in both axial directions percussion of a hammer device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Percussive Tools And Related Accessories (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Actuator (AREA)
EP14154964.2A 2013-03-04 2014-02-13 Steuerung der Arbeitsfrequenz eines Schlagwerkes Active EP2774727B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL14154964T PL2774727T3 (pl) 2013-03-04 2014-02-13 Sterowanie częstotliwością roboczą mechanizmu uderzeniowego
RS20171150A RS56633B1 (sr) 2013-03-04 2014-02-13 Upravljački uređaj za radnu frekvenciju udarnog mehanizma

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA50139/2013A AT513849B1 (de) 2013-03-04 2013-03-04 Steuerung der Arbeitsfrequenz eines Schlagwerkes

Publications (2)

Publication Number Publication Date
EP2774727A1 EP2774727A1 (de) 2014-09-10
EP2774727B1 true EP2774727B1 (de) 2017-09-13

Family

ID=50073037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14154964.2A Active EP2774727B1 (de) 2013-03-04 2014-02-13 Steuerung der Arbeitsfrequenz eines Schlagwerkes

Country Status (15)

Country Link
US (1) US10035250B2 (sr)
EP (1) EP2774727B1 (sr)
JP (1) JP5921588B2 (sr)
KR (1) KR101754069B1 (sr)
CN (1) CN104101216B (sr)
AT (1) AT513849B1 (sr)
BR (1) BR102014004844B1 (sr)
CA (1) CA2844429C (sr)
ES (1) ES2649476T3 (sr)
IN (1) IN2014DE00459A (sr)
PL (1) PL2774727T3 (sr)
RS (1) RS56633B1 (sr)
RU (1) RU2581324C2 (sr)
TW (1) TWI587990B (sr)
UA (1) UA112550C2 (sr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160340849A1 (en) * 2015-05-18 2016-11-24 M-B-W, Inc. Vibration isolator for a pneumatic pole or backfill tamper
AT517385B1 (de) * 2015-06-15 2019-02-15 Fill Gmbh Vorrichtung zum Entkernen
WO2019079560A1 (en) 2017-10-20 2019-04-25 Milwaukee Electric Tool Corporation PERCUSSION TOOL
CN214723936U (zh) 2018-01-26 2021-11-16 米沃奇电动工具公司 冲击工具

Family Cites Families (26)

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US3741316A (en) * 1968-01-16 1973-06-26 Forges Et Atellers De Meudon S Fluid operated percussion tool
US3790125A (en) * 1972-10-31 1974-02-05 Fluid Controls Inc Control valve with power accumulating, snap action, spool drive
FI50390C (fi) * 1973-09-14 1976-03-10 Murskauskone Oy Hydraulisesti käytetty iskulaite
US4056123A (en) * 1973-09-26 1977-11-01 Nihon Spindle Seizo Kabushiki Kaisha Hydraulic oscillator
US4026193A (en) * 1974-09-19 1977-05-31 Raymond International Inc. Hydraulically driven hammer system
US4006783A (en) * 1975-03-17 1977-02-08 Linden-Alimak Ab Hydraulic operated rock drilling apparatus
FI751895A (sr) * 1975-06-26 1976-12-27 Xandor Ag
US4342255A (en) * 1976-06-09 1982-08-03 Mitsui Engineering And Shipbuilding Co., Ltd. Oscillator actuated hydraulic impulse device
FI60151C (fi) 1979-06-26 1981-12-10 Tampella Oy Ab Hydraulisk slaganordning
JPS5833286B2 (ja) * 1980-04-23 1983-07-19 フエライニヒテ・エ−デルシユタ−ルヴエルケ・アクチエンゲゼルシヤフト（フアウ・エ−・ヴエ−） 逆打撃機に打撃棒を連結するための装置
JPH078141Y2 (ja) * 1988-04-29 1995-03-01 マツダ株式会社 油圧打撃工具
US5143115A (en) * 1992-02-11 1992-09-01 Delta Power Hydraulic Co. Bi-directional pressure relief valve
SE9202105L (sv) * 1992-07-07 1994-01-08 Atlas Copco Rocktech Ab Slagverk
FI104960B (fi) * 1995-07-06 2000-05-15 Sandvik Tamrock Oy Hydraulinen iskuvasara
FI104961B (fi) * 1996-07-19 2000-05-15 Sandvik Tamrock Oy Painenestekäyttöinen iskuvasara
AT407919B (de) * 1998-01-19 2001-07-25 Boehler Pneumatik Internat Gmb Pneumatisch oder hydraulisch betreibbarer hammer und verwendung des hammers zum offenstellen oder zum verschliessen einer abstichöffnung eines metallurgischen gefässes
DE19832946A1 (de) * 1998-07-22 2000-01-27 Hilti Ag Handbohrgerät mit drucklufterregtem Schlagwerk
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AT511810B1 (de) 2011-09-27 2013-03-15 Tmt Bbg Res And Dev Gmbh Schlagwerk für eine hammereinrichtung und verfahren zum offenstellen einer abstichöffnung

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Also Published As

Publication number Publication date
TWI587990B (zh) 2017-06-21
EP2774727A1 (de) 2014-09-10
IN2014DE00459A (sr) 2015-06-19
KR101754069B1 (ko) 2017-07-05
US20140290971A1 (en) 2014-10-02
BR102014004844B1 (pt) 2021-06-08
CA2844429C (en) 2018-06-05
PL2774727T3 (pl) 2018-02-28
CN104101216B (zh) 2018-04-06
AT513849B1 (de) 2014-08-15
CN104101216A (zh) 2014-10-15
ES2649476T3 (es) 2018-01-12
KR20140109314A (ko) 2014-09-15
BR102014004844A2 (pt) 2014-12-09
UA112550C2 (uk) 2016-09-26
RU2014108199A (ru) 2015-09-10
RU2581324C2 (ru) 2016-04-20
JP2014168841A (ja) 2014-09-18
US10035250B2 (en) 2018-07-31
RS56633B1 (sr) 2018-03-30
TW201440971A (zh) 2014-11-01
JP5921588B2 (ja) 2016-05-24
CA2844429A1 (en) 2014-09-04
AT513849A4 (de) 2014-08-15

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