AT52809B - Device for de-energizing hoisting machines operated in Leonard control. - Google Patents
Device for de-energizing hoisting machines operated in Leonard control.Info
- 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
Links
- 238000004804 winding Methods 0.000 claims description 7
- 230000005284 excitation Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
Landscapes
- Control Of Direct Current Motors (AREA)
Description
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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
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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
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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.
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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
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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
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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)
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) |
-
1911
- 1911-02-08 AT AT52809D patent/AT52809B/en active
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