AT201382B - Continuous reversing device for hydraulic lifting cylinders for centrifuges, machine tools, etc. like - Google Patents

Continuous reversing device for hydraulic lifting cylinders for centrifuges, machine tools, etc. like

Info

Publication number
AT201382B
AT201382B AT201382DA AT201382B AT 201382 B AT201382 B AT 201382B AT 201382D A AT201382D A AT 201382DA AT 201382 B AT201382 B AT 201382B
Authority
AT
Austria
Prior art keywords
centrifuges
machine tools
hydraulic lifting
reversing device
lifting cylinders
Prior art date
Application number
Other languages
German (de)
Inventor
Otto Siegert
Gerhard Panzner
Original Assignee
Karl Marx Stadt Maschf
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 Karl Marx Stadt Maschf filed Critical Karl Marx Stadt Maschf
Application granted granted Critical
Publication of AT201382B publication Critical patent/AT201382B/en

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  • Centrifugal Separators (AREA)

Description

  

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  Kontinuierliche Umsteuer-Vorrichtung hydraulischer Hubzylinder für Zentrifugen, Werkzeugmaschinen u. dgl. 
 EMI1.1 
 

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 entgegengesetzter Richtung. Das jeweils vom Kolben 4 verdrängte Öl kann über die Bohrungen im Kolben 22 und über die Leitung 28 und 29 zur   Druckölstation zurückfliessen.   Nachdem der Schleudergutrückstand aus der Trommel ausgeschnitten ist, wird der Handhebel des Ventiles 10 in Stellung A gebracht und die   Entleerungs-Vorrichtung   steht still. 



   Da der Kolben 4 seinen Richtungswechsel erhält, bevor er an den Büchsen 17 und 18 anschlägt und zum Schaltvorgang nur ein geringes   Überschneiden, der   in der Schaltbüchse eingedrehten Ringnut und der mit der Druckleitung 20 verbundenen Ringnut im Zylinder 5   genügt,   entsteht ein vollkommen elastischer und in den Endstellungen ohne Verzögerungen arbeitender Schaltvorgang. Die Betätigung des Zylinders 30 für den Radialhub erfolgt wie bei bekannten Vorrichtungen durch gleichzeitigen Anschluss an die Druckleitung 13.



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  Continuous reversing device for hydraulic lifting cylinders for centrifuges, machine tools, etc. like
 EMI1.1
 

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 opposite direction. The oil displaced by the piston 4 can flow back to the pressure oil station via the bores in the piston 22 and via the lines 28 and 29. After the centrifugal residue has been cut out of the drum, the hand lever of the valve 10 is brought into position A and the emptying device stops.



   Since the piston 4 receives its change of direction before it hits the sleeves 17 and 18 and only a slight overlap for the switching process, the annular groove screwed into the switching sleeve and the annular groove connected to the pressure line 20 in the cylinder 5 is sufficient, a completely elastic and in Switching process working without delays in the end positions. The actuation of the cylinder 30 for the radial stroke takes place, as in known devices, by a simultaneous connection to the pressure line 13.

Claims (1)

PATENTANSPRUCH : Kontinuierliche Umsteuer-Vorrichtung hydraulischer Hubzylinder für Zentrifugen, Werkzeugmaschinen u. dgl., dadurch gekennzeichnet, dass die Umschaltung in den Endstellungen des Arbeitskolbens (4) durch Mitnahme von Schaltbüchsen (7 und 8) erfolgt, die über eingedrehte Ringnuten (19 und 26) einen Servomotor (9) derart schalten, dass das durch die Leitung (13) einströmende Drucköl im Wechsel auf der linken bzw. rechten Seite des Arbeitszylinders (5) zugeführt wird. PATENT CLAIM: Continuous reversing device for hydraulic lifting cylinders for centrifuges, machine tools, etc. The like., characterized in that the switching in the end positions of the working piston (4) is carried out by taking along switching sleeves (7 and 8) which switch a servo motor (9) via screwed-in annular grooves (19 and 26) in such a way that the line (13) incoming pressure oil is fed alternately on the left and right side of the working cylinder (5).
AT201382D 1956-10-18 1957-09-02 Continuous reversing device for hydraulic lifting cylinders for centrifuges, machine tools, etc. like AT201382B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201382X 1956-10-18

Publications (1)

Publication Number Publication Date
AT201382B true AT201382B (en) 1958-12-27

Family

ID=5765981

Family Applications (1)

Application Number Title Priority Date Filing Date
AT201382D AT201382B (en) 1956-10-18 1957-09-02 Continuous reversing device for hydraulic lifting cylinders for centrifuges, machine tools, etc. like

Country Status (1)

Country Link
AT (1) AT201382B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996046A (en) * 1960-05-20 1961-08-15 Gilbert H Skopp Canopy unlock thruster
US3592109A (en) * 1969-03-05 1971-07-13 Chance Co Ab Reciprocating fluid motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996046A (en) * 1960-05-20 1961-08-15 Gilbert H Skopp Canopy unlock thruster
US3592109A (en) * 1969-03-05 1971-07-13 Chance Co Ab Reciprocating fluid motor

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