EP2574874A1 - Striking mechanism for a hammer device and method for opening a tap hole - Google Patents

Striking mechanism for a hammer device and method for opening a tap hole Download PDF

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Publication number
EP2574874A1
EP2574874A1 EP12181332A EP12181332A EP2574874A1 EP 2574874 A1 EP2574874 A1 EP 2574874A1 EP 12181332 A EP12181332 A EP 12181332A EP 12181332 A EP12181332 A EP 12181332A EP 2574874 A1 EP2574874 A1 EP 2574874A1
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EP
European Patent Office
Prior art keywords
impact
piston
control
pressure medium
hammer
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Granted
Application number
EP12181332A
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German (de)
French (fr)
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EP2574874B1 (en
Inventor
Michael Wolfsberger
Werner Schantl
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TMT-BBG RESEARCH und DEVELOPMENT GmbH
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TMT -BBG RESEARCH und DEVELOPMENT GmbH
TMT BBG RES und DEV GmbH
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Publication of EP2574874A1 publication Critical patent/EP2574874A1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25DPERCUSSIVE TOOLS
    • B25D9/00Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
    • B25D9/14Control devices for the reciprocating piston
    • B25D9/26Control devices for adjusting the stroke of the piston or the force or frequency of impact thereof
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/15Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509Tapping equipment
    • F27D3/1527Taphole forming equipment, e.g. boring machines, piercing tools
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/15Tapping equipment; Equipment for removing or retaining slag
    • F27D3/1509Tapping equipment
    • F27D3/1536Devices for plugging tap holes, e.g. plugs stoppers

Definitions

  • the invention relates to a hammer mechanism for an axially usable in both directions hammer device, in particular impact mechanism for a hammer for opening and optionally closing a taphole of a metallurgical vessel, comprising a displaceable by means of a pressure medium in the axial direction Rohrkolben in a striking mechanism housing and a centric or proximal, engageable, at least with a tool connected, bilateral anvil parts having transmission part of the impact energy and a means for reversing the pressurization of the tubular piston, wherein the tubular piston on both sides acted upon by the pressure medium, has substantially radial pressure surfaces and grooves between pipe and percussion gear for reversing a Druckmediumbeaufschlagung having the pressure surfaces and discharge or return of the medium.
  • the invention relates to a method for opening or closing a tapping opening in a provided with a refractory lining wall of a metallurgical vessel.
  • Pneumatically or hydraulically operable hammers with a percussion mechanism which each axially on both sides acted upon by pressure medium tube piston, are prior art and, for example in the EP 0 930 476 B1 disclosed.
  • Such percussion devices are preferably used for devices which accomplish a propulsion or withdrawal of a tool in both directions, such as means for opening and closing tapping openings of metallurgical vessels and the like.
  • a regulation within limits of the impact energy and the impact frequency of the cattail can be done in a complex manner by means of conversions of Hammer device or by adjusting the amount per unit time and / or the pressure of the supplied pressure medium done.
  • the invention has for its object to overcome the disadvantages of percussion devices of the type mentioned for rotary hammers and to provide a simple way of controlling the beat frequency and the impact force of the cattail. Furthermore, if necessary, it should be possible to convert the impact frequency and impact force of the tubular piston in the event of an axial change of direction of the tool load in practical use in order to meet special requirements for hammer devices, in particular in metallurgical plants.
  • the tubular piston executes a different displacement or acceleration path depending on the activation of one of the Um Kunststoffungsnute offset in the axial direction and such changes of the beat frequency and the impact force or impact energy are achieved.
  • the longer the path for the return stroke of the pipe piston is provided to the reversal of the pressure medium, the lower the beat frequency and the higher the impact energy of the hammer and vice versa.
  • a particularly simple and effective control of the tube piston movement is achieved if the control mechanism of the percussion mechanism connected to the impact mechanism housing has a cylindrical recess with connecting channels to the Um Kunststoffungsnuten Schlagtechnikgephaseuse and by axial positioning of a control piston in the recess in each case one Um Kunststoffungsnuten activated.
  • This embodiment of the control means has the advantage that by a simple displacement of the control piston in the recess each directly effective, short flow channel connections are created, which ensure an exact reversal of the cog piston movement.
  • control piston can be positioned manually or against a spring force by means of a pressure medium in the recess of the control means.
  • Such an alternative can be an automatic adjustment of the tube piston movement be effected when the hammer device is moved hydraulically or pneumatically.
  • a hiring as well as a removal of the hammer device takes place locally by means of a pressure medium and thus the position of the control piston in the control means in dependence on the impact direction of the hammer device is adjustable, for example, in metallurgical plants, an open position or closing the tap hole of metallurgical vessels are automatically made according to a favorable procedure.
  • the further object of the invention to provide an advantageous method using an impact mechanism disclosed above in a hammer device for opening or optionally closing a tap hole in a refractory lining wall of a metallurgical vessel, is achieved when a propulsion and a withdrawal of a tool with different impact energy and / or done with different beat frequency.
  • Refractory linings and the like repairs and sealants are extremely brittle and sensitive to cracking.
  • a conversion of the impact energy and / or the impact frequency of the tool allows each to choose the cheapest impact technology.
  • the drilling process is optimized in a taphole position and a funnel-shaped breakout from the masonry is largely avoided in the direction of advance, and removal of the tool takes place at high speed without jamming.
  • a reference list is intended to facilitate the assignment of the functional means and parts in the representation.
  • Fig. 1 an impact mechanism according to the invention is shown, wherein the transmission part of the impact energy with ambosystems arranged on both sides as well as the tool (s) are not shown.
  • a tubular piston 1 is arranged axially displaceably in a hammer mechanism housing 2 and has distal pressure surfaces 11 and 11 ', which move the piston 1 when a surface is acted upon by a pressure medium.
  • a reversal of the pressurization of the respective pressure surfaces 11 and 11 'of the tubular piston 1 is carried out by a conventional means, being exchanged for a spring force by pressure or relaxation of a control device, the supply and discharge of the pressure medium.
  • a supply line 13 of pressure medium takes place by means of a recess in the percussion mechanism housing 2.
  • a recess 12 on the pipe piston projects beyond two control grooves 3, 3 'with connection channels 31, 31' to a control means 4, in which the connection channels 42, 42 'are continued in a recess 41 with a control piston 43.
  • the control piston 43 has on the outer surface of a recess which is connected to an inner hollow and thus forms a discharge channel for a pressure medium, which channel cooperates with a discharge means 5 for a relaxed pressure medium.
  • the control piston 43 is displaceable against a spring, so that its recess on the outer surface activates either the channels 31 in the impact mechanism housing 2 and 42 in the control means 4 or the axially spaced channels 31 'in the striking mechanism housing 2 and 42' in the control means 4. This results in alternatively a shorter or longer path of the tubular piston 1 to the reversal of the application of the pressure surfaces 11 and 11 '.
  • a positioning of the control piston 43 in the control means 4 can be carried out in an advantageous manner in each case by the pressure medium for hiring or for a withdrawal of the hammer drill so that an automatically controlled with its axial direction of impact energy and / or impact frequency is reached.

Abstract

The impact tool has a tubular piston (1) that is structured and arranged for axial displacement in impact tool housing (2) via a pressure medium. The radial pressure surfaces (11,11) are structured and arranged on opposite portions of tubular piston to be acted on with pressure medium. The grooves are provided with a control recess formed in tubular piston and two control grooves (3,3) for shift of pressure medium impingement on pressure surfaces. A controller (4) is structured and arranged to alternatively activate two control grooves via connection channels (42,42). An independent claim is included for method for opening tapping opening in wall of metallurgical vessel provided with fire-proof in-feed using impact tool.

Description

Die Erfindung bezieht sich auf ein Schlagwerk für eine axial in beide Richtungen einsetzbare Hammereinrichtung, insbesondere Schlagwerk für einen Bohrhammer zum Offenstellen und gegebenenfalls zum Verschließen einer Abstichöffnung eines metallurgischen Gefäßes, umfassend einen mittels eines Druckmediums in Axrichtung verschiebbaren Rohrkolben in einem Schlagwerkgehäuse und einen zentrischen bzw. proximalen, anstellbaren, zumindest mit einem Werkzeug verbundenen, beidseitig Ambossteile aufweisenden Übertragungsteil der Schlagenergie sowie ein Mittel zur Umsteuerung der Druckbeaufschlagung des Rohrkolbens, wobei der Rohrkolben beiderseits mit dem Druckmedium beaufschlagbare, im Wesentlichen radiale Druckflächen hat und zwischen Rohrkolben und Schlagwerkgehäuse Nuten zur Umsteuerung einer Druckmediumbeaufschlagung der Druckflächen und Austrag bzw. Rückführung des Mediums aufweist.The invention relates to a hammer mechanism for an axially usable in both directions hammer device, in particular impact mechanism for a hammer for opening and optionally closing a taphole of a metallurgical vessel, comprising a displaceable by means of a pressure medium in the axial direction Rohrkolben in a striking mechanism housing and a centric or proximal, engageable, at least with a tool connected, bilateral anvil parts having transmission part of the impact energy and a means for reversing the pressurization of the tubular piston, wherein the tubular piston on both sides acted upon by the pressure medium, has substantially radial pressure surfaces and grooves between pipe and percussion gear for reversing a Druckmediumbeaufschlagung having the pressure surfaces and discharge or return of the medium.

Weiters betrifft die Erfindung ein Verfahren zum Offenstehen oder Verschließen einer Abstichöffnung in einer mit einer feuerfesten Zustellung versehenen Wand eines metallurgischen Gefäßes.Furthermore, the invention relates to a method for opening or closing a tapping opening in a provided with a refractory lining wall of a metallurgical vessel.

Pneumatisch oder hydraulisch betreibbare Hämmer mit einem Schlagwerk, welches jeweils axial beidseitig mit Druckmedium beaufschlagbare Rohrkolben aufweist, sind Stand der Technik und beispielsweise in der EP 0 930 476 B1 offenbart. Derartige Schlagwerke werden vorzugsweise für Einrichtungen verwendet, welche in beide Richtungen einen Vortrieb oder Abzug eines Werkzeuges bewerkstelligen, wie Mittel zum Öffnen und Verschließen von Abstichöffnungen von metallurgischen Gefäßen und dergleichen.Pneumatically or hydraulically operable hammers with a percussion mechanism, which each axially on both sides acted upon by pressure medium tube piston, are prior art and, for example in the EP 0 930 476 B1 disclosed. Such percussion devices are preferably used for devices which accomplish a propulsion or withdrawal of a tool in both directions, such as means for opening and closing tapping openings of metallurgical vessels and the like.

Eine Regelung in Grenzen der Schlagenergie sowie der Schlagfrequenz des Rohrkolbens kann in aufwändiger Weise mittels Umbauten der Hammereinrichtung oder durch eine Einstellung der Menge je Zeiteinheit und/oder des Druckes des zugeführten Druckmediums erfolgen.A regulation within limits of the impact energy and the impact frequency of the cattail can be done in a complex manner by means of conversions of Hammer device or by adjusting the amount per unit time and / or the pressure of the supplied pressure medium done.

Bei metallurgischen Gefäßen, wie Hochöfen und dergleichen, kann es günstig sein, zur Öffnung des Abstichloches in der Mauerung eine hohe Schlagfrequenz und eine geringe Schlagkraft des Werkzeuges vorzusehen.In metallurgical vessels, such as blast furnaces and the like, it may be favorable to provide a high impact frequency and a low impact force of the tool for opening the tap hole in the wall.

Beim Ziehen des Bohrwerkzeuges aus dem Abstichloch nach dem Durchschlag ist es jeweils, um ein Festklemmen desselben zu verhindern, verfahrenstechnisch von Vorteil, eine höchstmögliche Rückschlagkraft auch bei geringerer Schlagfrequenz anzuwenden.When pulling the drill tool from the tap hole after the breakdown, it is in each case to prevent jamming thereof, procedurally advantageous to apply the highest possible kickback force even at lower impact frequency.

Die Erfindung setzt sich zur Aufgabe, die Nachteile von Schlagwerken der eingangs genannten Art für Bohrhämmer zu überwinden und auf einfache Weise eine Steuerung für die Schlagfrequenz und die Schlagkraft des Rohrkolbens zu schaffen. Weiters soll gegebenenfalls eine Umstellung der Schlagfrequenz und Schlagkraft des Rohrkolbens bei axialem Richtungswechsel der Werkzeugbelastung im praktischen Einsatz möglich sein, um besonderen Anforderungen an Hammereinrichtungen, insbesondere in Hüttenbetrieben, zu genügen.The invention has for its object to overcome the disadvantages of percussion devices of the type mentioned for rotary hammers and to provide a simple way of controlling the beat frequency and the impact force of the cattail. Furthermore, if necessary, it should be possible to convert the impact frequency and impact force of the tubular piston in the event of an axial change of direction of the tool load in practical use in order to meet special requirements for hammer devices, in particular in metallurgical plants.

Weiters ist es Ziel der Erfindung, ein Verfahren zum Offenstellen oder Verschließen von Abstichöffnungen gemäß der eingangs genannten Art anzugeben, weiches eine verbesserte Technologie bei erhöhter Betriebssicherheit aufweist.Furthermore, it is an object of the invention to provide a method for opening or closing tapping openings according to the aforementioned type, which has improved technology with increased reliability.

Diese Aufgabe wird mit einem gattungsgemäßen Schlagwerk dadurch gelöst, dass im Rohrkolben eine Steuerungsausnehmung und im Schlagwerkgehäuse axial versetzt mindestens zwei Steuerungsnuten für eine Umschaltung der Druckmittelbeaufschlagung der Rohrkolbendruckflächen angeordnet sind und durch ein Steuermittel mittels Verbindungskanäle die Umsteuerungsnuten alternativ aktivierbar sind.This object is achieved with a generic percussion by the fact that in the tube piston a control recess and the percussion mechanism axially offset at least two control grooves for switching the Druckmittelbeaufschlagung the tubular piston pressure surfaces are arranged and by a control means connecting channels, the Umsteuerungsnuten are activated alternatively.

Die mit der Erfindung erreichten Vorteile sind im Wesentlichen darin zu sehen, dass der Rohrkolben je nach Aktivierung einer der in Axrichtung versetzten Umsteuerungsnute einen unterschiedlichen Verschiebe- bzw. Beschleunigungsweg ausführt und derart Änderungen der Schlagfrequenz und der Schlagkraft bzw. Schlagenergie erreicht werden. Je länger also der Weg für den Rückhub des Rohrkolbens bis zur Umsteuerung der Druckmittelbeaufschlagung vorgesehen wird, desto geringer wird Schlagfrequenz und desto höher die Schlagenergie des Hammers und umgekehrt.The advantages achieved by the invention are essentially to be seen in the fact that the tubular piston executes a different displacement or acceleration path depending on the activation of one of the Umsteuerungsnute offset in the axial direction and such changes of the beat frequency and the impact force or impact energy are achieved. Thus, the longer the path for the return stroke of the pipe piston is provided to the reversal of the pressure medium, the lower the beat frequency and the higher the impact energy of the hammer and vice versa.

Je nach den gewünschten Schlagkriterien der Hammereinrichtung können mit einem einfachen Steuermittel die Wirksamkeit einer der Umsteuerungsnuten eingestellt und damit die Arbeitsparameter festgelegt werden.Depending on the desired impact criteria of the hammer device can be adjusted with a simple control means the effectiveness of the Umsteuerungsnuten and thus set the working parameters.

Eine besonders einfache und wirkungsvolle Steuerung der Rohrkolbenbewegung wird erreicht, wenn das mit dem Schlagwerkgehäuse verbundene Steuermittel des Schlagwerkes eine zylindrische Ausnehmung mit Verbindungskanälen zu den Umsteuerungsnuten im Schlagwerkgehäuse aufweist und mittels axialer Positionierung eines Steuerkolbens in der Ausnehmung jeweils eine der Umsteuerungsnuten aktivierbar ist.A particularly simple and effective control of the tube piston movement is achieved if the control mechanism of the percussion mechanism connected to the impact mechanism housing has a cylindrical recess with connecting channels to the Umsteuerungsnuten Schlagwerkgehäuse and by axial positioning of a control piston in the recess in each case one Umsteuerungsnuten activated.

Diese Ausführungsform des Steuermittels hat den Vorteil, dass durch eine einfache Verschiebung des Steuerkolbens in der Ausnehmung jeweils unmittelbar wirksame, kurze Strömungskanal-Verbindungen geschaffen werden, welche eine exakte Umsteuerung der Rohrkolbenbewegung gewährleisten.This embodiment of the control means has the advantage that by a simple displacement of the control piston in the recess each directly effective, short flow channel connections are created, which ensure an exact reversal of the cog piston movement.

Nach einer erfindungsgemäßen Ausführungsvariante ist der Steuerkolben manuell oder gegen eine Federkraft mittels eines Druckmediums in der Ausnehmung des Steuermittels positionierbar.According to an embodiment variant according to the invention, the control piston can be positioned manually or against a spring force by means of a pressure medium in the recess of the control means.

Derart kann alternativ eine automatische Einstellung der Rohrkolbenbewegung bewirkt werden, wenn die Hammereinrichtung hydraulisch oder pneumatisch verfahren wird.Such an alternative can be an automatic adjustment of the tube piston movement be effected when the hammer device is moved hydraulically or pneumatically.

Wenn bei einer weiteren Ausgestaltung der Erfindung ein Anstellen sowie ein Abziehen der Hammereinrichtung vor Ort jeweils mittels eines Druckmediums erfolgt und derart die Position des Steuerkolbens im Steuermittel in Abhängigkeit von der Schlagrichtung der Hammereinrichtung einstellbar ist, kann beispielsweise in Hüttenbetrieben eine Offenstellung oder ein Verschließen der Abstichöffnung von metallurgischen Gefäßen nach einer günstigen Vorgangweise automatisch vorgenommen werden.If in a further embodiment of the invention, a hiring as well as a removal of the hammer device takes place locally by means of a pressure medium and thus the position of the control piston in the control means in dependence on the impact direction of the hammer device is adjustable, for example, in metallurgical plants, an open position or closing the tap hole of metallurgical vessels are automatically made according to a favorable procedure.

Das weitere Ziel der Erfindung, ein vorteilhaftes Verfahren unter Verwendung eines vorgeordnet offenbarten Schlagwerkes in einer Hammereinrichtung zum Offenstehen oder gegebenenfalls zum Verschließen einer Abstichöffnung in einer mit feuerfesten Zustellung versehenen Wand eines metallurgischen Gefäßes anzugeben, wird erreicht, wenn ein Vortrieb und ein Rückzug eines Werkzeuges mit unterschiedlicher Schlagenergie und/oder mit unterschiedlicher Schlagfrequenz erfolgen.The further object of the invention to provide an advantageous method using an impact mechanism disclosed above in a hammer device for opening or optionally closing a tap hole in a refractory lining wall of a metallurgical vessel, is achieved when a propulsion and a withdrawal of a tool with different impact energy and / or done with different beat frequency.

Feuerfeste Auskleidungen und dergleichen Reparaturen sowie Dichtmassen sind äußerst spröde und rissempfindlich. Wird also bei einem Offenstellen der Abstichöffnung eines metallurgischen Gefäßes das Werkzeug mit hoher Schlagenergie vorgetrieben, so können größere, trichterförmige Ausbrüche im Mauerwerk entstehen, welche eine aufwändige Reparatur erfordern. Eine Umstellung der Schlagenergie und/oder der Schlagfrequenz des Werkzeuges ermöglicht jeweils die günstigste Schlagtechnologie zu wählen.Refractory linings and the like repairs and sealants are extremely brittle and sensitive to cracking. Thus, if the tool is advanced with high impact energy when the tapping opening of a metallurgical vessel is opened, larger, funnel-shaped outbreaks may arise in the masonry, which necessitate a complex repair. A conversion of the impact energy and / or the impact frequency of the tool allows each to choose the cheapest impact technology.

Wird in vorteilhafte Weise eine Umstellung der Schlagenergie und/oder der Schlagfrequenz des Werkzeuges durch eine Änderung von Vortrieb auf Rückzug der Hammereinrichtung gesteuert, kann eine verbesserte Verfahrenstechnologie des Abstiches von metallurgischen Gefäßen bei hoher Wirtschaftlichkeit erreicht werden.If a conversion of the impact energy and / or the impact frequency of the tool is controlled by a change of propulsion to retraction of the hammer device in an advantageous manner, an improved process technology of tapping metallurgical vessels with high efficiency can be achieved.

Als besonders günstig hat es sich erwiesen, wenn der Vortrieb des Werkzeuges mit niedriger Schlagenergie und hoher Schlagfrequenz und der Rückzug desselben mit hoher Schlagenergie und geringer Schlagfrequenz vorgenommen werden.It has proven to be particularly favorable when the propulsion of the tool with low impact energy and high impact frequency and the retraction of the same with high impact energy and low impact frequency are made.

Derart wird bei einer Abstichlocherstellung der Bohrvorgang optimiert und in Vortriebsrichtung ein trichterförmiger Ausbruch aus dem Mauerwerk weitgehend vermieden und beim Rückzug des Werkzeuges erfolgt eine Entfernung desselben klemmfrei mit hoher Geschwindigkeit.In such a way, the drilling process is optimized in a taphole position and a funnel-shaped breakout from the masonry is largely avoided in the direction of advance, and removal of the tool takes place at high speed without jamming.

Ein Ausführungsbeispiel der Erfindung, welches lediglich einen technischen Weg derselben darstellt, ist in der Zeichnung gezeigt und wird nachfolgend beschrieben.An embodiment of the invention, which represents only a technical way of the same, is shown in the drawing and will be described below.

Es zeigt

  • Fig. 1 ein Schlagwerk mit Steuermittel eines Rohrkolbens
It shows
  • Fig. 1 a striking mechanism with control means of a cattail

Eine Bezugszeichenliste soll die Zuordnung der Funktionsmittel und Teile in der Darstellung erleichtern.A reference list is intended to facilitate the assignment of the functional means and parts in the representation.

Es stellen dar:They show:

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Rohrkolbenbulrush
11,11'11.11 '
Druckflächen am RohrkolbenPressure surfaces on the pipe piston
1212
Steuerausnehmung am RohrkolbenControl recess on the pipe piston
1313
Zuleitung vom DruckmediumSupply line from the pressure medium
22
SchlagwerkgehäusePercussion mechanism housing
3,3'3,3 '
Steuerungsnuten im SchlagwerkgehäuseControl grooves in the impact mechanism housing
31,31'31.31 '
Verbindungskanäleconnecting channels
44
Steuermittelcontrol means
4141
Ausnehmung im SteuermittelRecess in the control means
4343
Steuerkolbenspool
55
Austragsleitung für entspanntes DruckmediumDischarge line for relaxed pressure medium
5151
Austragskanal im SchlagwerkgehäuseDischarge channel in impact mechanism housing

In Fig. 1 ist ein erfindungsgemäßes Schlagwerk gezeigt, wobei das Übertragungsteil der Schlagenergie mit beidseitig angeordneten Ambossteilen sowie das (die) Werkzeug(e) nicht dargestellt sind.In Fig. 1 an impact mechanism according to the invention is shown, wherein the transmission part of the impact energy with ambosystems arranged on both sides as well as the tool (s) are not shown.

Ein Rohrkolben 1 ist in einem Schlagwerkgehäuse 2 axial verschiebbar angeordnet und weist distal Druckflächen 11 und 11' auf, die bei jeweiliger Beaufschlagung einer Fläche mit einem Druckmedium den Kolben 1 bewegen.A tubular piston 1 is arranged axially displaceably in a hammer mechanism housing 2 and has distal pressure surfaces 11 and 11 ', which move the piston 1 when a surface is acted upon by a pressure medium.

Eine Umsteuerung der Druckbeaufschlagung der jeweiligen Druckflächen 11 und 11' des Rohrkolbens 1 erfolgt mit einem üblichen Mittel, wobei gegen eine Federkraft durch Druck oder Entspannung einer Stelleinrichtung die Zufuhr und Ableitung des Druckmediums getauscht werden.A reversal of the pressurization of the respective pressure surfaces 11 and 11 'of the tubular piston 1 is carried out by a conventional means, being exchanged for a spring force by pressure or relaxation of a control device, the supply and discharge of the pressure medium.

Für einen Betrieb erfolgt im erfindungsgemäßen Schlagwerk eine Zuleitung 13 von Druckmedium mittels einer Ausnehmung im Schlagwerkgehäuse 2.For operation in the impact mechanism according to the invention, a supply line 13 of pressure medium takes place by means of a recess in the percussion mechanism housing 2.

Bei einer Beaufschlagung einer Druckfläche 11' am Rohrkolben 1 wird dieser im Gehäuse 2 axial verschoben, bis eine Verbindung der Zuleitung von Druckmedium 13 und einer Steuerausnehmung im Rohrkolben 12 erreicht wird.When a pressure surface 11 'on the tubular piston 1 is acted upon, it is axially displaced in the housing 2 until a connection of the supply line of pressure medium 13 and a control recess in the tubular piston 12 is achieved.

Dadurch erfolgt eine Umsteuerung der Druckbeaufschlagung auf die Druckfläche 11, welche den Rohrkolben in die Gegenrichtung treibt.This results in a reversal of the pressurization on the pressure surface 11, which drives the tube piston in the opposite direction.

Eine Ausnehmung 12 am Rohrkolben überragt zwei Steuernuten 3, 3' mit Verbindungskanälen 31, 31' zu einem Steuermittel 4, in welchem die Verbindungskanäle 42, 42' in eine Ausnehmung 41 mit einem Steuerkolben 43 weitergeführt sind.A recess 12 on the pipe piston projects beyond two control grooves 3, 3 'with connection channels 31, 31' to a control means 4, in which the connection channels 42, 42 'are continued in a recess 41 with a control piston 43.

Der Steuerkolben 43 hat an der Außenoberfläche eine Ausnehmung, die mit einem Innenhohl verbunden ist und derart einen Ableitungskanal für ein Druckmedium bildet, welcher Kanal mit einem Ableitungsmittel 5 für ein entspanntes Druckmedium kooperiert.The control piston 43 has on the outer surface of a recess which is connected to an inner hollow and thus forms a discharge channel for a pressure medium, which channel cooperates with a discharge means 5 for a relaxed pressure medium.

Der Steuerkolben 43 ist gegen eine Feder verschiebbar, sodass dessen Ausnehmung an der Außenoberfläche entweder die Kanäle 31 im Schlagwerkgehäuse 2 und 42 im Steuermittel 4 oder die axial beabstandeten Kanäle 31' im Schlagwerkgehäuse 2 und 42' im Steuermittel 4 aktiviert. Daraus ergibt sich alternativ ein kürzerer oder längerer Weg des Rohrkolbens 1 bis zur Umsteuerung der Beaufschlagung der Druckflächen 11 und 11'.The control piston 43 is displaceable against a spring, so that its recess on the outer surface activates either the channels 31 in the impact mechanism housing 2 and 42 in the control means 4 or the axially spaced channels 31 'in the striking mechanism housing 2 and 42' in the control means 4. This results in alternatively a shorter or longer path of the tubular piston 1 to the reversal of the application of the pressure surfaces 11 and 11 '.

Eine Positionierung des Steuerkolbens 43 im Steuermittel 4 kann in vorteilhafter Weise jeweils durch das Druckmedium für ein Anstellen oder für einen Rückzug des Bohrhammers erfolgen, sodass eine mit dessen axialer Bewegungsrichtung automatisch gesteuerte Schlagenergie und/oder Schlagfrequenz erreichbar ist.A positioning of the control piston 43 in the control means 4 can be carried out in an advantageous manner in each case by the pressure medium for hiring or for a withdrawal of the hammer drill so that an automatically controlled with its axial direction of impact energy and / or impact frequency is reached.

Claims (7)

Schlagwerk für eine axial in beide Richtungen einsetzbare Hammereinrichtung, insbesondere Schlagwerk für einen Bohrhammer zum Offenstellen und gegebenenfalls zum Verschließen einer Abstichöffnung eines metallurgischen Gefäßes, umfassend einen mittels eines Druckmediums in Axrichtung verschiebbaren Rohrkolben (1) in einem Schlagwerkgehäuse (2) und einen zentrischen bzw. proximalen, anstellbaren, zumindest mit einem Werkzeug verbundenen, beidseitig Ambossteile aufweisenden Übertragungsteil der Schlagenergie sowie ein Mittel zur Umsteuerung der Druckbeaufschlagung des Rohrkolbens, wobei der Rohrkolben (1) beiderseits mit dem Druckmedium beaufschlagbare, im Wesentlichen radiale Druckflächen (11, 11') hat und zwischen Rohrkolben (1) und Schlagwerkgehäuse (2) Nuten zur Umsteuerung einer Druckmediumbeaufschlagung der Druckflächen und Austrag bzw. Rückführung des Mediums aufweist, dadurch gekennzeichnet, dass im Rohrkolben (1) eine Steuerungsausnehmung (12) und im Schlagwerkgehäuse (2) axial versetzt mindestens zwei Steuerungsnuten (3, 3') für eine Umschaltung der Druckmittelbeaufschlagung der Rohrkolbendruckflächen (11, 11') angeordnet sind und durch ein Steuermittel (4) mittels Verbindungskanäle (31, 31', 42, 42') die Umsteuerungsnuten (3, 3') alternativ aktivierbar sind.Hammer mechanism for an axially in both directions usable hammer device, in particular percussion for a hammer drill to open and optionally for closing a taphole of a metallurgical vessel, comprising a displaceable by means of a pressure medium in the axial direction pipe piston (1) in a striking mechanism housing (2) and a centric or proximal, engageable, at least with a tool connected, bilateral anvil parts having transmission part of the impact energy and a means for reversing the pressurization of the tubular piston, wherein the tubular piston (1) on both sides acted upon by the pressure medium, substantially radial pressure surfaces (11, 11 ') and has between the tubular piston (1) and impact mechanism housing (2) has grooves for reversing a Druckmediumbeaufschlagung the pressure surfaces and discharge or return of the medium, characterized in that in the tubular piston (1) has a control recess (12) and in Schlagwerkgehäu se (2) axially offset at least two control grooves (3, 3 ') for switching the Druckmittelbeaufschlagung the Rohrkolbendruckflächen (11, 11') are arranged and by a control means (4) by means of connecting channels (31, 31 ', 42, 42') the Umsteuerungsnuten (3, 3 ') are activated alternatively. Schlagwerk nach Anspruch 1, dadurch gekennzeichnet, dass das Steuermittel (4) des Schlagwerkes eine zylindrische Ausnehmung (41) mit Verbindungskanälen (42, 42') zu den Umsteuerungsnuten (3, 3') im Schlagwerkgehäuse (2) aufweist und mittels axialer Positionierung eines Steuerkolbens (43) in der Ausnehmung (41) jeweils eine der Umsteuerungsnuten (3, 3') aktivierbar ist.Impact mechanism according to claim 1, characterized in that the control means (4) of the percussion mechanism has a cylindrical recess (41) with connecting channels (42, 42 ') to the Umsteuerungsnuten (3, 3') in striking mechanism housing (2) and by means of axial positioning of a Control piston (43) in the recess (41) each one of Umsteuerungsnuten (3, 3 ') can be activated. Schlagwerk nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Steuerkolben (43) manuell oder gegen eine Federkraft mittels eines Druckmediums in der Ausnehmung (41) des Steuermittels (4) positionierbar ist.Impact device according to claim 1 or 2, characterized in that the control piston (43) can be positioned manually or against a spring force by means of a pressure medium in the recess (41) of the control means (4). Schlagwerk nach Anspruch 3, dadurch gekennzeichnet, dass ein Anstellen sowie ein Abziehen der Hammereinrichtung vor Ort jeweils mittels eines Druckmediums erfolgt und derart die Position des Steuerkolbens (43) im Steuermittel (4) in Abhängigkeit von der Schlagrichtung der Hammereinrichtung einstellbar ist.Impact device according to claim 3, characterized in that a hiring as well as a removal of the hammer device on site takes place in each case by means of a pressure medium and thus the position of the control piston (43) in the control means (4) in dependence on the direction of impact of the hammer device is adjustable. Verfahren, vorzugsweise unter Verwendung eines Schlagwerkes in einer Hammereinrichtung gemäß Anspruch 1, zum Offenstellen oder gegebenenfalls zum Verschließen einer Abstichöffnung in einer mit feuerfesten Zustellung versehenen Wand eines metallurgischen Gefäßes, bei welchem ein Vortrieb und ein Rückzug eines Werkzeuges mit unterschiedlicher Schlagenergie und/oder mit unterschiedlicher Schlagfrequenz erfolgen.Method, preferably using a percussion mechanism in a hammer device according to claim 1, for opening or optionally closing a tap hole in a refractory lining wall of a metallurgical vessel, in which a propulsion and retraction of a tool with different impact energy and / or with different Beat frequency. Verfahren nach Anspruch 5, dadurch gekennzeichnet, dass eine Umstellung der Schlagenergie und/oder der Schlagfrequenz des Werkzeuges durch eine Änderung von Vortrieb auf Rückzug der Hammereinrichtung gesteuert wird.A method according to claim 5, characterized in that a change of the impact energy and / or the impact frequency of the tool is controlled by a change of propulsion to retreat of the hammer device. Verfahren nach Anspruch 5 oder 6, dadurch gekennzeichnet, dass der Vortrieb des Werkzeuges mit niedriger Schlagenergie und hoher Schlagfrequenz und der Rückzug desselben mit hoher Schlagenergie und geringer Schlagfrequenz vorgenommen werden.A method according to claim 5 or 6, characterized in that the propulsion of the tool with low impact energy and high impact frequency and the withdrawal of the same are made with high impact energy and low impact frequency.
EP12181332.3A 2011-09-27 2012-08-22 Striking mechanism for a hammer device and method for opening a tap hole Active EP2574874B1 (en)

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ATA1397/2011A AT511810B1 (en) 2011-09-27 2011-09-27 HITCH FOR A HAMMAR EQUIPMENT AND METHOD FOR DISPLAYING A HITCH OPENING

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RU2012141226A (en) 2014-04-10
KR101441908B1 (en) 2014-09-23
TWI533982B (en) 2016-05-21
US20130075120A1 (en) 2013-03-28
CN103009342B (en) 2015-09-23
US20160169582A1 (en) 2016-06-16
JP5605858B2 (en) 2014-10-15
ZA201207209B (en) 2013-06-29
AT511810A4 (en) 2013-03-15
EP2574874B1 (en) 2019-04-03
CA2790905C (en) 2015-02-10
US9347709B2 (en) 2016-05-24
MX2012011063A (en) 2013-03-27
UA105950C2 (en) 2014-07-10
RU2529133C2 (en) 2014-09-27
JP2013071243A (en) 2013-04-22
BR102012024285B1 (en) 2022-06-07
AT511810B1 (en) 2013-03-15
KR20130034000A (en) 2013-04-04
US9903655B2 (en) 2018-02-27
CA2790905A1 (en) 2013-03-27
TW201336639A (en) 2013-09-16
CN103009342A (en) 2013-04-03
BR102012024285A2 (en) 2015-01-06

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