AT51315B - Expansion control for compressed air tools, in particular rock drilling machines. - Google Patents

Expansion control for compressed air tools, in particular rock drilling machines.

Info

Publication number
AT51315B
AT51315B AT51315DA AT51315B AT 51315 B AT51315 B AT 51315B AT 51315D A AT51315D A AT 51315DA AT 51315 B AT51315 B AT 51315B
Authority
AT
Austria
Prior art keywords
expansion
compressed air
rock drilling
expansion control
drilling machines
Prior art date
Application number
Other languages
German (de)
Original Assignee
Duisburger Maschb Actien Ges V
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 Duisburger Maschb Actien Ges V filed Critical Duisburger Maschb Actien Ges V
Application granted granted Critical
Publication of AT51315B publication Critical patent/AT51315B/en

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Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
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Falla durch die Bauart der Maschine die Verwendung eines   kurzon Kolhens mit     verhältnismässig langem   Hub bedingt ist, kann die Steuerung der Kanäle f, f1 durch den 
 EMI2.1 
 Kolben befindlichen Kanals dagegen geöffnet ist. 



    PATENT-ANSPRÜCHE :  
1. Expansionssteuerung für durch Druckluft oder dgl. betriebene Gesteinbohrmaschinen,   Bohrhämmer,   Werkzeuge oder dgl., bei welcher die Bewegung der Steuerorgane teils durch das verdichtete, teils durch das frisch zugeführte Druckmittel erfolgt, dadurch gekennzeichnet, dass die Steuerorgane in einem gemeinsamen, die Druckmittel-   zuführungskanäle   miteinander verbindenden Raum so angeordnet sind, dass nach Öffnen eines Ventiles durch den Vordichtungsdruck der benachbarten Zylinderseite dieses sich gegen das andere Ventil stützt und es auf seinem Sitz hält, so dass beide Ventile in Bezug auf den Lufteintritt vor bzw. hinter den Arbeitskolben ein einziges Steuerorgan bilden und dass deren Wirkung als Doppelventil erst beim jedesmaligen Luftabschluss zum Ausdruck kommt.



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 EMI1.1
 
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If the design of the machine requires the use of a short piston with a relatively long stroke, the channels f, f1 can be controlled by the
 EMI2.1
 Piston located channel, however, is open.



    PATENT CLAIMS:
1. Expansion control for rock drilling machines, rotary hammers, tools or the like operated by compressed air or the like, in which the movement of the control elements takes place partly through the compressed, partly through the freshly supplied pressure medium, characterized in that the control elements are in a common, the pressure medium - Supply channels interconnecting space are arranged so that after opening a valve by the pre-seal pressure of the adjacent cylinder side, this is supported against the other valve and holds it on its seat, so that both valves with regard to the air inlet in front of or behind the working piston form the only control element and that their effect as a double valve is only expressed each time air is excluded.

Claims (1)

2. Ausführungsform der Expansionsatouerung nach Anspruch 1, dadurch gekenn- zeichnet. dass jedes der beiden Steuerorgane, während der Expansionsperiode mit fier- jnoigen Zylindersoite, auf welcher Expansion stattfindet, durch einen Expansionskanal vorhunden ist, dessen eine Zylinderöffnung jeweilig durch den Arbeitskolben bzw. durch ein kleines Hilfsveutil in Gestalt einer Kugel, Klappe oder Scheibe geschlossen gehalten wird. 2. embodiment of the expansion arrangement according to claim 1, characterized. that each of the two control organs, during the expansion period with fiery cylinder soles, on which expansion takes place, is present through an expansion channel, one cylinder opening of which is kept closed by the working piston or by a small auxiliary valve in the form of a ball, flap or disc . 3. Ausführungsform der Expansionssteuerung nach Anspruch I, dadurch gekenn- zeichnet, dass die Ventile im Augenblicke des Öffnens völlig entlastet sind, so dass der für das Öffnen erforderliche Verdichtungsdruck nicht grösser zu sein braucht als der Reibungswiderstand des Ventiles. EMI2.2 3. Embodiment of the expansion control according to claim 1, characterized in that the valves are completely relieved at the moment of opening, so that the compression pressure required for opening does not need to be greater than the frictional resistance of the valve. EMI2.2
AT51315D 1910-08-04 1910-08-04 Expansion control for compressed air tools, in particular rock drilling machines. AT51315B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT51315T 1910-08-04

Publications (1)

Publication Number Publication Date
AT51315B true AT51315B (en) 1911-12-27

Family

ID=3572263

Family Applications (1)

Application Number Title Priority Date Filing Date
AT51315D AT51315B (en) 1910-08-04 1910-08-04 Expansion control for compressed air tools, in particular rock drilling machines.

Country Status (1)

Country Link
AT (1) AT51315B (en)

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