DEP0048017DA - Electric point machine with slip or friction clutch - Google Patents
Electric point machine with slip or friction clutchInfo
- Publication number
- DEP0048017DA DEP0048017DA DEP0048017DA DE P0048017D A DEP0048017D A DE P0048017DA DE P0048017D A DEP0048017D A DE P0048017DA
- Authority
- DE
- Germany
- Prior art keywords
- slip
- friction clutch
- electric point
- point machine
- rotor
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired
Links
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
Description
Bei elektrischen Weichenantrieben wird im allgemeinen von einer Reibungskupplung zwischen Antriebsmotor und Stellstange Gebrauch gemacht. Diese Reibungskupplung dient dem Zweck, einmal eine Ueberlastung des Motors infolge auftretender Hemmungen, ferner harte Anschläge nach Erreichen der Endlage zu vermeiden. Diese Reibungskupplungen sind gewöhnlich in einem Getriebeblock eingebaut und müssen infolgedessen den dabei auftretenden hohen Drehmomenten entsprechend bemessen sein. Sie erfordern daher eine schwere und verhältnismässig teure Ausbildung.In electrical point machines, use is generally made of a friction clutch between the drive motor and the control rod. The purpose of this friction clutch is to avoid overloading the motor as a result of inhibitions and also to avoid hard stops after the end position has been reached. These friction clutches are usually installed in a gear block and must therefore be dimensioned according to the high torques that occur. They therefore require difficult and relatively expensive training.
Bei der Erfindung wird dieser Nachteil dadurch beseitigt, dass die Reibungskupplung an die Stelle des geringsten Drehmoments, nämlich in den Antriebsmotor verlegt ist. Erfindungsgemäß war der eine Kupplungsteil mit dem Läufer des Antriebsmotors baulich vereinigt. Man erhält dadurch bei Wahrung aller Bedingungen eine billigere Ausführung. Ausserdem lässt sich diese Ausführung nachträglich einfacher dem verlangten Drehmoment anpassen.In the invention, this disadvantage is eliminated in that the friction clutch is relocated to the point of the lowest torque, namely in the drive motor. According to the invention, one coupling part was structurally combined with the rotor of the drive motor. In this way, if all conditions are met, a cheaper version is obtained. In addition, this version can subsequently be more easily adapted to the required torque.
Ein Ausführungsbeispiel zeigt die Abbildung, bei welcher der Läufer L des Motors auf der einen Stirnseite mit einem Kupplungskegel K starr verbunden ist, während er auf der Welle mittels einer Buchse B drehbar gelagert ist. Durch eine Druckfeder F wird der Läufer L samt Konus K in axialer Richtung gegen die Mitnehmerscheibe M gepresst und bringt diese und damit die Welle zum Umlauf. Die Kupplungsfeder F kann durch eine Einstellvorrichtung J beliebig gespannt und damit das zu übertragende Drehmoment im gewünschten Masse eingestellt werden.The figure shows an exemplary embodiment in which the rotor L of the motor is rigidly connected to a coupling cone K on one end face, while it is rotatably mounted on the shaft by means of a bushing B. A compression spring F presses the rotor L together with the cone K in the axial direction against the drive plate M and causes it and thus the shaft to rotate. The clutch spring F can be tensioned as desired by an adjusting device J and thus the torque to be transmitted can be adjusted to the desired extent.
Claims (2)
Family
ID=
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