AT74775B - Safety device for monitoring motors whose speed is changed by regulating their field. - Google Patents

Safety device for monitoring motors whose speed is changed by regulating their field.

Info

Publication number
AT74775B
AT74775B AT74775DA AT74775B AT 74775 B AT74775 B AT 74775B AT 74775D A AT74775D A AT 74775DA AT 74775 B AT74775 B AT 74775B
Authority
AT
Austria
Prior art keywords
field
regulating
changed
safety device
whose speed
Prior art date
Application number
Other languages
German (de)
Original Assignee
Siemens Schuckertwerke 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 Siemens Schuckertwerke Gmbh filed Critical Siemens Schuckertwerke Gmbh
Application granted granted Critical
Publication of AT74775B publication Critical patent/AT74775B/en

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  • Control Of Conveyors (AREA)

Description

  

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 Feld   geschwächt   wird ; dass aber zweitens die zugelassenen Beschleunigungen auch von der Maschinenlast abhängen. 



   In der Fig. 3 ist das Stück b des   Anlaufkurvenschubes j ! nicht fest, wie   in Fig. 2, sondern um den   Punkt 2 schwingbar   angeordnet. Den Kurvenschub b zieht eine Feder 3 beständig nach dem Mittelpunkte der Steuerscheibe und damit gegen einen um diese Mitte drehbaren Nocken   J.   



  Dieser ist durch das Gegengewicht 6 ausgewuchtet und daher stets im Gleichgewicht, auch Wenn er sich um die Scheibenmitte 4 dreht. Der Steuernocken 5 steht unter der Herrschaft der Feder 7 und des polarisierten Elektromagneten   8,   die gewöhnlich, wenn der Kurvenschub b steuert, einander entgegenwirken. Sowohl Feder 7 wie Elektromagnet 8 sind an der Steuerscheibe fest   und   drehen sich mit ihr. Den Magnet 8   durchfliesst   der Strom des Fördermotors, der in Fig. 2 mit   j ! bezeichnet   ist.

   Je stärker der Fördermotor belastet ist, desto weiter zieht der Magnet   S den  
Steuernocken 5 abwärts und desto weiter schiebt er dadurch den Kurvenschub b nach dem Umfange der Steuerscheibe, desto geringer wird also die Beschleunigung, die der Kurvenschub b   zulässt,  
Statt durch den Steuernocken 5 kann der   Kurvenschnb   b durch ein beliebiges anderes   Getriebe bewegt werden.   
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 Maschinenführer anzeigt, ob und wie er den Steuerhebel bewegen darf. 



   PATENT-ANSPRÜCHE : 
 EMI3.3 
   änderung de ;- !   zu steuernden Motors beeinflusste Vorrichtung (Fig. 1) desto kleinere Beschleungigungen zulässt, je mehr das Feld geschwächt wird. 
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 Field is weakened; Secondly, the permitted accelerations also depend on the machine load.



   In Fig. 3, the piece b of the starting curve thrust j! not fixed, as in FIG. 2, but arranged to oscillate about point 2. A spring 3 constantly pulls the cam thrust b towards the center point of the control disk and thus against a cam J.



  This is balanced by the counterweight 6 and therefore always in equilibrium, even when it rotates around the disc center 4. The control cam 5 is under the control of the spring 7 and the polarized electromagnet 8, which usually oppose each other when the cam thrust b controls. Both the spring 7 and the electromagnet 8 are fixed to the control disk and rotate with it. The magnet 8 flows through the current of the conveyor motor, which in Fig. 2 with j! is designated.

   The more the conveyor motor is loaded, the further the magnet S pulls the
Control cam 5 downwards and the further it pushes the cam thrust b to the circumference of the control disc, the lower the acceleration that the cam thrust b allows,
Instead of the control cam 5, the cam b can be moved by any other gear.
 EMI3.2
 Machine operator shows whether and how he can move the control lever.



   PATENT CLAIMS:
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   change de; -! To be controlled motor influenced device (Fig. 1) allows the smaller accelerations, the more the field is weakened.
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AT74775D 1913-12-16 1914-12-14 Safety device for monitoring motors whose speed is changed by regulating their field. AT74775B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE74775X 1913-12-16

Publications (1)

Publication Number Publication Date
AT74775B true AT74775B (en) 1918-10-10

Family

ID=5636886

Family Applications (1)

Application Number Title Priority Date Filing Date
AT74775D AT74775B (en) 1913-12-16 1914-12-14 Safety device for monitoring motors whose speed is changed by regulating their field.

Country Status (1)

Country Link
AT (1) AT74775B (en)

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