AT76662B - Device for the automatic shutdown of electrically operated hoisting machines if the speed deviates from the correct value during retardation. - Google Patents

Device for the automatic shutdown of electrically operated hoisting machines if the speed deviates from the correct value during retardation.

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Publication number
AT76662B
AT76662B AT76662DA AT76662B AT 76662 B AT76662 B AT 76662B AT 76662D A AT76662D A AT 76662DA AT 76662 B AT76662 B AT 76662B
Authority
AT
Austria
Prior art keywords
electrically operated
value during
correct value
automatic shutdown
hoisting machines
Prior art date
Application number
Other languages
German (de)
Original Assignee
Aeg Union Elek Wien
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 Aeg Union Elek Wien filed Critical Aeg Union Elek Wien
Application granted granted Critical
Publication of AT76662B publication Critical patent/AT76662B/en

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  • Control Of Electric Motors In General (AREA)

Description

  

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   Der   Uberwac1mngskreis   11 wird von einem kleinen Generator 12 gespeist, welcher vom Fördermotor oder von der Fördertrommel aus beispielsweise mittels   Kettcnübortragung   an- 
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   ist. Bei Stillstand nimmt sie den   Wert Es an, welcher durch das Drehfeld des Generators 12 im Läufer bei Stillstand induziert wird. Zu dieser Stillstandsspannung kommt noch während des Ganges der   Fördermaschine   eine von der Drehung des   Generatorläufers   abhängige, der Fördergeschwindigkeit proportionale Komponente En (siehe Fig. 2).

   Um die Gegensätzlichkeit des Drehsinne für Läufer und Drehfeld für beide Drehrichtungen des   Fördermotors   zu wahren, wird bei Umkehr des   Drehsinne   des   Fördermotors   1 auch der Drehsinn des Drehfeldes des   Genera@as 12 durch   einen in seinem Ständer liegenden Umschalter 13 umgekehrt. Der Umschalter 13 kann derart eingerichtet sein, dass er selbsttätig in die eine oder andere Endlage 
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   Förderkurb   bzw. von dem die Lage des Förderkorbes   anzeigenden Teufenzeiger   oder einem ahnlchen Apparate gegen Hubende verstellt wird, derart, dass der Widerstand im   Uberwachungs-   
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 stromsammelechienen erregt. die beispielsweise 220 V führen und der Schalter 20 entgegen einer Feder- oder Gewichtskraft geschlossen.

   Hiedurch wird je nach der Stellung des früher er- 
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   The monitoring circuit 11 is fed by a small generator 12, which is supplied from the conveyor motor or from the conveyor drum, for example by means of chain transfer.
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   is. At standstill it assumes the value Es, which is induced by the rotating field of generator 12 in the rotor at standstill. In addition to this standstill voltage, a component En which is dependent on the rotation of the generator rotor and proportional to the conveying speed is added while the hoisting machine is running (see FIG. 2).

   In order to maintain the opposing sense of rotation for rotor and rotating field for both directions of rotation of the conveyor motor, when the direction of rotation of the conveyor motor 1 is reversed, the direction of rotation of the rotating field of the Genera @ as 12 is reversed by a switch 13 located in its stand. The changeover switch 13 can be set up in such a way that it automatically moves into one or the other end position
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   Conveyor crank or by the depth pointer indicating the position of the conveyor cage or a similar device is adjusted towards the end of the stroke, in such a way that the resistance in the monitoring
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 power busbars excited. which lead, for example, 220 V and the switch 20 is closed against a spring or weight force.

   Depending on the position of the earlier
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Claims (1)

EMI4.2 EMI4.2
AT76662D 1914-04-30 1915-05-01 Device for the automatic shutdown of electrically operated hoisting machines if the speed deviates from the correct value during retardation. AT76662B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE76662X 1914-04-30

Publications (1)

Publication Number Publication Date
AT76662B true AT76662B (en) 1919-06-10

Family

ID=5637536

Family Applications (1)

Application Number Title Priority Date Filing Date
AT76662D AT76662B (en) 1914-04-30 1915-05-01 Device for the automatic shutdown of electrically operated hoisting machines if the speed deviates from the correct value during retardation.

Country Status (1)

Country Link
AT (1) AT76662B (en)

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