AT52809B - Device for de-energizing hoisting machines operated in Leonard control. - Google Patents

Device for de-energizing hoisting machines operated in Leonard control.

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Publication number
AT52809B
AT52809B AT52809DA AT52809B AT 52809 B AT52809 B AT 52809B AT 52809D A AT52809D A AT 52809DA AT 52809 B AT52809 B AT 52809B
Authority
AT
Austria
Prior art keywords
energizing
hoisting machines
current
machines operated
winding
Prior art date
Application number
Other languages
German (de)
Original Assignee
Bbc Ag Oesterr
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 Bbc Ag Oesterr filed Critical Bbc Ag Oesterr
Application granted granted Critical
Publication of AT52809B publication Critical patent/AT52809B/en

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  • Control Of Direct Current Motors (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 die Stromwicklung, solange die Stromrichtung dem Betriebe des Fördermotors als Motor entspricht, hingegen sie die Spannungsspule in ihrer Wirkung unterstützt, sobald derselbe als Generator arbeitet. Durch die Einstellung der Federkraft und entsprechende Abmessung der einzelnen Wicklungen ist es nun   möglich,   die oben erwähnte Wirkungsweise hervorzubringen. Um zu verhindern, dass im Falle des Ausbleibens des Erregersttomes der Spannungswicklung die Stromspule auch bei der Stromrichtung des Fördermotors in positivem Sinne, d. i. wenn derselbe als Motor arbeitet, eine Sperrung des Notausschalter herbeiführt, können in bekannter Weise Vorkehrungen getroffen sein, welche dann die Stromwicklung wirkungslos machen.

   Die Benützung 
 EMI2.2 
 hängigkeit von einer zu regulierende Stromstärke wird als bekannt vorausgesetzt, jedoch in der Verwendung einer solchen Vorrichtung für den beschriebenen Zweck ein neuer Erfindungsgedanke erblickt. 



   PATENT-ANSPRÜCHE : 
1. Einrichtung zum Stromlosmachen von   in Leonardsteuerung   betriebenen elektrischen   Fördermaschinen,   bei welchen ein an sich bekannter   Schaltapparat   zur Verringerung der von der 
 EMI2.3 
 wirkung irgend einer Kraft betätigt wird, dadurch gekennzeichnet, dass die Verringerung der   Anlassdynamospannung   so weit erfolgt, bis der Fördermotor entsprechend seiner Geschwindigkeit einen Bremsstrom von bestimmter Grösse in die   Anlassdynamo   zurückliefert, hingegen die weitere   Verringerung der Anlassdynamospannung   in   Abhängigkeit   von der Bremsstromstärke des Fördermotors mit bekannten Mitteln geregelt wird bis zum Stillstand des Motors.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 

 <Desc / Clms Page number 2>

 
 EMI2.1
 the current winding, as long as the current direction corresponds to the operation of the conveyor motor as a motor, but it supports the voltage coil in its effect as soon as it works as a generator. By setting the spring force and corresponding dimensions of the individual windings, it is now possible to bring about the above-mentioned mode of action. In order to prevent that in the event of the absence of the excitation current of the voltage winding, the current coil is also in the positive sense in the current direction of the conveyor motor, i.e. i. if the same is working as a motor, locking the emergency stop switch, precautions can be taken in a known manner, which then render the current winding ineffective.

   The use
 EMI2.2
 Dependence on a current to be regulated is assumed to be known, but the use of such a device for the purpose described is seen as a new inventive concept.



   PATENT CLAIMS:
1. Device for de-energizing electrical hoisting machines operated in Leonard control, in which a switching device known per se to reduce the amount of the
 EMI2.3
 effect of any force is actuated, characterized in that the reduction in the starting dynamo voltage takes place until the conveyor motor returns a braking current of a certain magnitude to the starting dynamo according to its speed, whereas the further reduction in the starting dynamo voltage depending on the braking current of the conveyor motor is known Medium is regulated until the engine comes to a standstill.

 

Claims (1)

2. Ausführungsform der Einrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zur Regelung ein Magl1f't 2 verwendet wird, dessen eine Wicklung 6 durch eine konstante Spannung jeweils im Sinne der Erregung der Anlassdynamo erregt wird, während dessen zweite Wicklung 7 durch den Strom des Fördermotors 4 oder einen demselben proportionalen Strom erregt wird, welche Erregung derjenigen durch die Wicklung 6 entgegenwirkt, solange der Fördermotor 4 EMI2.4 . ds Generator Strom liefert. 2. Embodiment of the device according to claim 1, characterized in that a Magl1f't 2 is used for regulation, one winding 6 of which is excited by a constant voltage in the sense of the excitation of the starting dynamo, while its second winding 7 by the current of the Conveyor motor 4 or a current proportional to the same is excited, which excitation counteracts that through the winding 6 as long as the conveyor motor 4 EMI2.4 . ds generator supplies electricity. 3. Ausführungsform der Einrichtung nach Anspruch 2, dadurch gekennzeichnet, dass beim EMI2.5 3. embodiment of the device according to claim 2, characterized in that when EMI2.5
AT52809D 1910-04-13 1911-02-08 Device for de-energizing hoisting machines operated in Leonard control. AT52809B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE52809X 1910-04-13

Publications (1)

Publication Number Publication Date
AT52809B true AT52809B (en) 1912-03-26

Family

ID=5627435

Family Applications (1)

Application Number Title Priority Date Filing Date
AT52809D AT52809B (en) 1910-04-13 1911-02-08 Device for de-energizing hoisting machines operated in Leonard control.

Country Status (1)

Country Link
AT (1) AT52809B (en)

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