EP0457754B1 - Railway switch drive - Google Patents
Railway switch drive Download PDFInfo
- Publication number
- EP0457754B1 EP0457754B1 EP19910890102 EP91890102A EP0457754B1 EP 0457754 B1 EP0457754 B1 EP 0457754B1 EP 19910890102 EP19910890102 EP 19910890102 EP 91890102 A EP91890102 A EP 91890102A EP 0457754 B1 EP0457754 B1 EP 0457754B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bolt
- switch drive
- railway switch
- roller
- housing
- 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 - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/10—Locking mechanisms for points; Means for indicating the setting of points
Definitions
- the invention relates to a switch drive for railway systems, in which the switch tongues are fixed with monitoring rods in the end positions, and the power transmission from the drive unit to the push rod takes place via a non-positively engaging roller in a trough, the roller being guided in a housing slidably arranged on the push rod is and is held by a locking bolt in the trough.
- Switch machines of this type are known, for example, from DE-AS 19 52 824 and 26 06 664.
- the locking bolt is pressed against the roller by means of a spring, usually a plate spring, which in turn establishes the non-positive connection with the push rod (FIG. 1).
- the non-positive connection has the task of making the switch movable. If the switch is opened, a force occurs on the remote switch tongue that lies above the holding force of the non-positive connection and moves the push rod into the other end position (FIG. 2). Since the housing is fixed in the drive housing via a rocker, the push rod pushes the roller out of the recess against the force of the spring and thus unlocks the non-positive connection.
- the spring force can be adjusted accordingly using a threaded washer.
- DE-AS 19 52 824 it is proposed to replace the spring and the roller when used as a non-retractable switch, by a suitably designed bolt rigidly connected to the spring housing, whereby the non-positive connection between the push rod and the spring housing is replaced by a positive connection.
- this device has the disadvantage that the entire spring housing must be replaced when converting.
- test bars are used, which engage in recesses in the push rods.
- the recesses have bevelled continuations, so that the test bars are completely lifted out during the opening process.
- the cutouts in the push rods are only partially chamfered. If the test bar reaches the end of the partially chamfered recess, no further movement is possible and the drive remains locked by the test bar.
- the disadvantage here is that depending on the use, the push rods must be different, which must already be taken into account during manufacture.
- the second solution provides for an optional latch that can be used to limit the upward movement of the roll. This maintains the non-positive connection, the test bar is not fully lifted and the entire drive remains locked. This solution also has the disadvantage that the conversion from open to non-openable takes place on a part that is difficult to access.
- This object is achieved in that the locking bolt is locked at its end facing away from the roller by means of a rigid locking device attached to the housing.
- a locking device at the upper end of the housing is easily accessible and can, if necessary, be replaced in a simple manner by preloaded springs, and can thus be opened.
- the locking device has a predetermined breaking point.
- a predetermined breaking point can be dimensioned according to the desired requirements. It distinguishes a switch equipped with it from the retractable switch in that it cannot be reset. It cannot be driven on again until the predetermined breaking point has been repaired or renewed.
- the locking device contains a threaded washer which can be screwed into the housing and has a bore concentric with the bolt, the diameter of which is larger than the outer diameter of the bolt, and a shear washer with a predetermined breaking strength which is clamped between the bolt and the threaded washer.
- the bolt When opening, the bolt is pierced by the shear washer.
- This predetermined breaking point can be replaced in a simple manner after unscrewing the threaded washer.
- shear washers of different thickness and / or of different material By using shear washers of different thickness and / or of different material, the breaking strength and thus the unlocking force can be adjusted.
- the point machine By simply removing the rigid locking device and inserting a spring between the bolt and the threaded washer, the point machine can be set up to be retractable.
- the controls are easily accessible.
- a further development of the invention provides that the locking disc is secured against rotation by means of a locking screw. This prevents an undefined distance between the bolt and the shear washer from unintentionally rotating the threaded washer.
- the securing screw can be sealed and thus protected against the intentional turning of the threaded washer or replacement of the shear washer.
- Fig. 1 shows a non-positive connection of the push rod and housing according to the prior art.
- Fig. 2 the same device is shown unlocked after an opening operation.
- Fig. 3 shows the improved device according to the present invention and Fig. 4 the same device in the opened state.
- the known arrangement of a non-positive connection between the push rod 1 and the spring housing 4 consists of a roller 3 which is pressed into a trough 2 by means of bolts 5.
- the contact pressure is generated with a spring 6, which acts on the bolt 5, and can be adjusted accordingly with the threaded washer 7.
- Fig. 3 shows the device according to the invention, in which the spring is merely replaced by a locking device which consists of a threaded washer 9 and a shear washer 8.
- the bolt 5 has no path of movement here, but is clamped by the shear washer 8 and the threaded washer 9 screwed into it in a form-fitting manner.
- the second threaded washer 7 serves here only as a guide and can be screwed into the thread length in any position.
- the threaded washer is secured non-rotatably by means of a sealing screw 11.
- the eyelet 12 on the sealing screw 11 offers the possibility of attaching a wire seal and thus protecting the device against misuse.
- two sealing screws are used at an angle of approximately 90 ° to one another and sealed together with a single sealing wire.
- Fig. 4 shows the device according to the invention in the opening state.
- the push rod is pulled to the left.
- the roller is lifted out of the trough and pressed against the bolt 5.
- the bolt 5 breaks through the shear washer 8, whereby the non-positive connection is unlocked. Since there is no prestressed return spring, the device can only be brought into operation again by opening the protective cap 10, unscrewing the threaded washer 9, replacing the destroyed shear washer 8 with a new one and inserting the threaded washer 9.
Description
Die Erfindung betrifft einen Weichenantrieb für Eisenbahnanlagen, bei dem die Weichenzungen mit Überwachungsstangen in den Endlagen festgelegt werden, und die Kraftübertragung vom Antriebsaggregat auf die Schubstange über eine in eine Mulde kraftschlüssig eingreifende Rolle erfolgt, wobei die Rolle in einem auf die Schubstange gleitbar angeordneten Gehäuse geführt ist und von einem Verriegelungsbolzen in der Mulde festgehalten wird.The invention relates to a switch drive for railway systems, in which the switch tongues are fixed with monitoring rods in the end positions, and the power transmission from the drive unit to the push rod takes place via a non-positively engaging roller in a trough, the roller being guided in a housing slidably arranged on the push rod is and is held by a locking bolt in the trough.
Derartige Weichenantriebe sind beispielsweise aus der DE-AS 19 52 824 und 26 06 664 bekannt. Dabei wird der Verriegelungsbolzen mittels einer Feder, meist einer Tellerfeder, gegen die Rolle gedrückt, die ihrerseits die kraftschlüssige Verbindung mit der Schubstange herstellt (Fig. 1).Switch machines of this type are known, for example, from DE-AS 19 52 824 and 26 06 664. The locking bolt is pressed against the roller by means of a spring, usually a plate spring, which in turn establishes the non-positive connection with the push rod (FIG. 1).
Die kraftschlüssige Verbindung hat die Aufgabe, die Weiche auffahrbar zu machen. Wird die Weiche aufgefahren, so tritt an der abliegenden Weichenzunge eine kraft auf, die über der Festhaltekraft der kraftschlüssigen Verbindung liegt, und bewegt die Schubstange in die andere Endlage (Fig. 2). Da das Gehäuse über eine Wippe im Antriebsgehäuse festgelegt ist, drückt die Schubstange die Rolle aus der Mulde gegen die Kraft der Feder heraus und entriegelt so die kraftschlüssige Verbindung. Die Federkraft kann mittels Gewindescheibe entsprechend eingestellt werden.The non-positive connection has the task of making the switch movable. If the switch is opened, a force occurs on the remote switch tongue that lies above the holding force of the non-positive connection and moves the push rod into the other end position (FIG. 2). Since the housing is fixed in the drive housing via a rocker, the push rod pushes the roller out of the recess against the force of the spring and thus unlocks the non-positive connection. The spring force can be adjusted accordingly using a threaded washer.
In vielen Anwendungsfällen ist jedoch eine auffahrbare Weiche nicht erwünscht. Sowohl von den Herstellern als auch von den Verwendern solcher Weichen wird gewünscht, die Weiche mit einfachen Mitteln von auffahrbar auf nicht auffahrbar umrüsten zu können.In many applications, however, a retractable switch is not desirable. Both manufacturers and users of such switches want to be able to convert the switch from open to non-open using simple means.
In der DE-AS 19 52 824 wird vorgeschlagen, bei Verwendung als nichtauffahrbare Weiche, die Feder und die Rolle durch einen entsprechend ausgebildeten, starr mit dem Federgehäuse verbundener Bolzen auszutauschen, wodurch die kraftschlüssige Verbindung zwischen Schubstange und Federgehäuse durch eine formschlüssige Verbindung ersetzt wird. Diese Einrichtung hat jedoch den Nachteil, daß beim Umbau das gesamte Federgehäuse ausgewechselt werden muß.In DE-AS 19 52 824 it is proposed to replace the spring and the roller when used as a non-retractable switch, by a suitably designed bolt rigidly connected to the spring housing, whereby the non-positive connection between the push rod and the spring housing is replaced by a positive connection. However, this device has the disadvantage that the entire spring housing must be replaced when converting.
In der DE-AS 26 06 664 sind zwei weitere Lösungen vorgestellt. In der einen werden Prüfriegel verwendet, die in Aussparungen in den Schubstangen eingreifen. In der auffahrbaren Version haben die Aussparungen abgeschrägte Fortsetzungen, so daß die Prüfriegel beim Auffahrvorgang vollständig ausgehoben werden. Bei der nichtauffahrbaren Ausführung sind die Aussparungen in den Schubstangen nur teilweise abgeschrägt. Erreicht der Prüfriegel das Ende der nur teilweise abgeschrägten Aussparung, ist keine weitere Bewegung mehr möglich, und der Antrieb bleibt durch die Prüfriegel verriegelt. Nachteilig ist dabei, daß je nach Verwendung die Schubstangen unterschiedlich sein müssen, was bei der Fertigung bereits berücksichtigt werden muß.Two further solutions are presented in DE-AS 26 06 664. In one, test bars are used, which engage in recesses in the push rods. In the retractable version, the recesses have bevelled continuations, so that the test bars are completely lifted out during the opening process. In the non-opening version, the cutouts in the push rods are only partially chamfered. If the test bar reaches the end of the partially chamfered recess, no further movement is possible and the drive remains locked by the test bar. The disadvantage here is that depending on the use, the push rods must be different, which must already be taken into account during manufacture.
Die zweite Lösung sieht einen wahlweise einschaltbaren Riegel vor, durch den der Aushebeweg der Rolle nach oben begrenzt werden kann. Damit bleibt die kraftschlüssige Verbindung erhalten, der Prüfriegel wird nicht vollständig ausgehoben und der gesamte Antrieb bleibt verriegelt. Auch diese Lösung enthält den Nachteil, daß der Umbau von auffahrbar auf nichtauffahrbar an einem schwer zugänglichen Teil erfolgt.The second solution provides for an optional latch that can be used to limit the upward movement of the roll. This maintains the non-positive connection, the test bar is not fully lifted and the entire drive remains locked. This solution also has the disadvantage that the conversion from open to non-openable takes place on a part that is difficult to access.
Es ist daher Aufgabe der Erfindung, den bekannten Weichenantrieb so zu verbessern, daß ein Umbau von auffahrbar auf nichtauffahrbar in einfacher Weise und an einer leicht zugänglichen Stelle erfolgen kann.It is therefore an object of the invention to improve the known point machine so that a conversion from drivable to non-drivable can be done in a simple manner and at an easily accessible location.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Verriegelungsbolzen an seinem der Rolle abgewandten Ende mittels einer am Gehäuse befestigten, starren Verriegelungsvorrichtung verriegelt ist.This object is achieved in that the locking bolt is locked at its end facing away from the roller by means of a rigid locking device attached to the housing.
Eine Verriegelungsvorrichtung am oberen Ende des Gehäuses ist leicht zugänglich und kann im Bedarfsfall in einfacher Weise durch vorgespannte Federn ersetzt werden, und damit auffahrbar gemacht werden.A locking device at the upper end of the housing is easily accessible and can, if necessary, be replaced in a simple manner by preloaded springs, and can thus be opened.
Ein weiterer Nachteil aller bekannten Lösungen liegt darin, daß ein Auffahrvorgang auf eine nichtauffahrbare Weiche entweder eine Entgleisung oder eine Zerstörung des Weichenantriebes oder der Weiche selbst zur Folge hat.Another disadvantage of all known solutions lies in the fact that an opening operation on a non-openable switch results in either derailment or destruction of the switch drive or the switch itself.
Es ist daher Aufgabe der Weiterbildungen der Erfindung, den nichtauffahrbaren Weichenantrieb so zu verbessern, daß im Falle eines Auffahrvorganges der Schaden begrenzt bleibt und zerstörte Teile in einfacher Weise und an leicht zugängigen Stellen ausgetauscht werden können.It is therefore an object of the developments of the invention to improve the non-retractable switch drive so that the damage remains limited in the event of a drive-up operation and destroyed parts can be replaced in a simple manner and in easily accessible places.
Diese Aufgabe wird in einer Weiterbildung der Erfindung dadurch gelöst, daß die Verriegelungsvorrichtung eine Sollbruchstelle aufweist. Eine derartige Sollbruchstelle kann je nach den gewünschten Anforderungen dimensioniert werden. Sie unterscheidet eine damit ausgestattete Weiche von der auffahrbaren Weiche dadurch, daß sie nicht rückstellbar ist. Sie ist erst wieder befahrbar, wenn die Sollbruchstelle repariert bzw. erneuert wurde.This object is achieved in a development of the invention in that the locking device has a predetermined breaking point. Such a predetermined breaking point can be dimensioned according to the desired requirements. It distinguishes a switch equipped with it from the retractable switch in that it cannot be reset. It cannot be driven on again until the predetermined breaking point has been repaired or renewed.
Eine Ausgestaltung der Erfindung sieht vor, daß die Verriegelungsvorrichtung eine in das Gehäuse einschraubbare Gewindescheibe mit einer zum Bolzen konzentrischen Bohrung, deren Durchmesser größer ist als der Außendurchmesser des Bolzens, und eine zwischen dem Bolzen und der Gewindescheibe eingeklemmten Scheerscheibe mit vorgegebener Bruchfestigkeit enthält.An embodiment of the invention provides that the locking device contains a threaded washer which can be screwed into the housing and has a bore concentric with the bolt, the diameter of which is larger than the outer diameter of the bolt, and a shear washer with a predetermined breaking strength which is clamped between the bolt and the threaded washer.
Beim Auffahren wird die Scheerscheibe vom Bolzen durchstoßen. Diese Sollbruchstelle kann in einfacher Weise nach Herausschrauben der Gewindescheibe ausgetauscht werden. Durch die Verwendung von Scheerscheiben unterschiedlicher Stärke und/oder aus unterschiedlichem Material kann die Bruchfestigkeit und damit die Entriegelungskraft eingestellt weden. Durch einfachen Ausbau der starren Verriegelungsvorrichtung und Einlegen einer Feder zwischen Bolzen und Gewindescheibe kann der Weichenantrieb auffahrbar eingerichtet werden. Die Bedienungselemente sind dabei leicht zugängig.When opening, the bolt is pierced by the shear washer. This predetermined breaking point can be replaced in a simple manner after unscrewing the threaded washer. By using shear washers of different thickness and / or of different material, the breaking strength and thus the unlocking force can be adjusted. By simply removing the rigid locking device and inserting a spring between the bolt and the threaded washer, the point machine can be set up to be retractable. The controls are easily accessible.
Eine Weiterbilung der Erfindung sieht vor, daß die Verriegelungsscheibe mittels Sicherungsschraube gegen Verdrehen gesichert ist. Damit wird verhindert, daß durch unbeabsichtigtes Verdrehen der Gewindescheibe ein undefinierter Abstand zwischen Bolzen und Scheerscheibe entsteht.A further development of the invention provides that the locking disc is secured against rotation by means of a locking screw. This prevents an undefined distance between the bolt and the shear washer from unintentionally rotating the threaded washer.
Nach einer weiteren Ausgestaltung kann die Sicherungsschraube verplombt sein und damit gegen beabsichtigtes Verdrehen der Gewindescheibe bzw. Austausch der Scheerscheibe geschützt sein.According to a further embodiment, the securing screw can be sealed and thus protected against the intentional turning of the threaded washer or replacement of the shear washer.
Die Erfindung wird nun anhand eines Ausführungsbeispiels näher erläutert. In der zugehörigen Zeichnung zeigt Fig. 1 eine kraftschlüssige Verbindung von Schubstange und Gehäuse entsprechend dem Stand der Technik. In Fig. 2 ist dieselbe Einrichtung nach einem Auffahrvorgang entriegelt dargestellt. Fig. 3 zeigt die verbesserte Einrichtung nach der vorliegenden Erfindung und Fig. 4 dieselbe Einrichtung im aufgefahrenen Zustand.The invention will now be explained in more detail using an exemplary embodiment. In the accompanying drawing, Fig. 1 shows a non-positive connection of the push rod and housing according to the prior art. In Fig. 2 the same device is shown unlocked after an opening operation. Fig. 3 shows the improved device according to the present invention and Fig. 4 the same device in the opened state.
Gemäß Fig. 1 besteht die bekannte Anordnung einer kraftschlüssigen Verbindung zwischen der Schubstange 1 und dem Federgehäuse 4 aus einer Rolle 3, die mittels Bolzen 5 in eine Mulde 2 gedrückt wird. Der Anpreßdruck wird dabei mit einer Feder 6, die auf den Bolzen 5 wirkt, erzeugt und kann mit der Gewindescheibe 7 entsprechend eingestellt werden.1, the known arrangement of a non-positive connection between the
Im Auffahrzustand wird, wie in Fig. 2 gezeigt, die Schubstange durch die auf die hier nicht gezeigte abliegende Weichenzunge wirkende Kraft in die andere Endlage gedrückt. Dabei wird die Festhaltekraft der Feder auf die Rolle überwunden und die Rolle aus der Mulde gehoben. Dieser Zustand kann erst wieder durch einen Weichenstellvorgang rückgängig gemacht werden, wobei die Rolle wieder in die Mulde gepreßt wird.In the opening state, as shown in FIG. 2, the push rod is pressed into the other end position by the force acting on the remote switch tongue, not shown here. The holding force of the spring on the roller is overcome and the roller is lifted out of the trough. This condition can only be reversed by setting the switch again, the roller being pressed into the trough again.
Fig. 3 zeigt die erfindungsgemäße Einrichtung, in der die Feder lediglich durch eine Verriegelungsvorrichtung ersetzt ist, die aus einer Gewindescheibe 9 und einer Scheerscheibe 8 besteht. Der Bolzen 5 hat hier keinen Bewegungsweg, sondern ist durch die Scheerscheibe 8 und die darüber formschlüssig eingeschraubte Gewindescheibe 9 festgeklemmt. Die zweite Gewindescheibe 7 dient hier nur als Führung und kann in beliebiger Stellung innerhalb der Gewindelänge eingeschraubt sein. Die Gewindescheibe ist mittels einer plombenschraube 11 unverdrehbar gesichert. Über das gesamte Gehäuseende ist eine Schutzkappe 10 gestülpt, die ebenfalls durch die Plombenschraube 11 gesichert ist. Die Öse 12 auf der plombenschraube 11 bietet die Möglichkeit, eine Drahtplombe anzubringen und damit die Vorrichtung gegen Mißbrauch zu schützen. In vorteilhafter Weise werden dabei zwei Plombenschrauben im Winkel von ca. 90° zueinander verwendet und miteinander mit einem einzigen Plombendraht verplombt.Fig. 3 shows the device according to the invention, in which the spring is merely replaced by a locking device which consists of a threaded
Fig. 4 zeigt die erfindungsgemäße Vorrichtung im Auffahrzustand. Wie bereits in Fig. 2 erläutert, wird die Schubstange nach links gezogen. Dabei wird die Rolle aus der Mulde gehoben und gegen den Bolzen 5 gepreßt. Der Bolzen 5 durchbricht dabei die Scheerscheibe 8 wodurch die kraftschlüssige Verbindung entriegelt ist. Da keine vorgespannte Rückstellfeder vorhanden ist, kann die Einrichtung erst wieder durch Öffnen der Schutzkappe 10, Ausschrauben der Gewindescheibe 9, Auswechseln der zerstörten Scheerscheibe 8 durch eine neue und Einsetzen der Gewindescheibe 9 bis zum Anschlag, in Funktion gebracht werden.Fig. 4 shows the device according to the invention in the opening state. As already explained in Fig. 2, the push rod is pulled to the left. The roller is lifted out of the trough and pressed against the
Claims (5)
- Railway switch drive which has the switch tongues locked in their home positions by means of supervision poles and the power transmission from the actuator to the push rods (1) is performed via a roller (3) tensionally engaging into a mould (2), whereby the roller is guided in a housing (4) arranged slideably on the push rod and being pressed into the mould by a lock bolt (5), characterized in that the lock bolt (5) is locked at its end not facing the roller (3) by means of a rigid locking device (8 and 9) being fixed to the housing (4).
- Railway switch drive according to claim 1, characterized in that the locking device (8 and 9) shows a predetermined breaking point (8).
- Railway switch drive according to claim 2, characterized in that the locking device contains a thread disk (9) which can be screwed into the housing (4) with a hole (13) concentrical to the bolt, whereby the diameter of the hole (13) is larger than the outside diameter of the bolt (5), and a shearing disk (8) with predetermined breaking strength being locked between bolt (5) and thread disk (9).
- Railway switch drive according to claim 3, characterized in that thread disk (9) is protected against twisting by means of a sealing screw (11).
- Railway switch drive according to claim 4, characterized in that the sealing screw (11) is sealed.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT1057/90 | 1990-05-14 | ||
| AT105790A AT393250B (en) | 1990-05-14 | 1990-05-14 | SWITCH DRIVE |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0457754A2 EP0457754A2 (en) | 1991-11-21 |
| EP0457754A3 EP0457754A3 (en) | 1993-04-21 |
| EP0457754B1 true EP0457754B1 (en) | 1994-09-28 |
Family
ID=3505653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19910890102 Expired - Lifetime EP0457754B1 (en) | 1990-05-14 | 1991-05-13 | Railway switch drive |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0457754B1 (en) |
| AT (1) | AT393250B (en) |
| CZ (1) | CZ279514B6 (en) |
| DE (1) | DE59103079D1 (en) |
| DK (1) | DK0457754T3 (en) |
| ES (1) | ES2064982T3 (en) |
| HU (1) | HU215423B (en) |
| PL (1) | PL164324B1 (en) |
| SK (1) | SK278855B6 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299941C (en) * | 2004-10-10 | 2007-02-14 | 北京交通大学 | Method for monitoring operating state of switch machine for switches and crossings of wheel track |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SI9300651A (en) * | 1992-12-17 | 1994-06-30 | Voest Alpine Eisenbahnsysteme | Device for bolding movable parts of railway switches |
| AT400239B (en) * | 1993-09-16 | 1995-11-27 | Alcatel Austria Ag | MOVABLE SIGNAL DRIVE |
| PL3147174T3 (en) * | 2015-09-25 | 2020-05-18 | Alstom Ferroviaria S.P.A. | Apparatus for operating a switch of a railway track and associated switch |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE487600C (en) * | 1929-12-11 | Ver Eisenbahn Signalwerke G M | Cutting coupling |
-
1990
- 1990-05-14 AT AT105790A patent/AT393250B/en not_active IP Right Cessation
-
1991
- 1991-05-10 HU HU911567A patent/HU215423B/en not_active IP Right Cessation
- 1991-05-13 ES ES91890102T patent/ES2064982T3/en not_active Expired - Lifetime
- 1991-05-13 EP EP19910890102 patent/EP0457754B1/en not_active Expired - Lifetime
- 1991-05-13 DE DE59103079T patent/DE59103079D1/en not_active Expired - Lifetime
- 1991-05-13 DK DK91890102T patent/DK0457754T3/en active
- 1991-05-13 SK SK1401-91A patent/SK278855B6/en unknown
- 1991-05-13 CZ CS911401A patent/CZ279514B6/en not_active IP Right Cessation
- 1991-05-14 PL PL29024391A patent/PL164324B1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299941C (en) * | 2004-10-10 | 2007-02-14 | 北京交通大学 | Method for monitoring operating state of switch machine for switches and crossings of wheel track |
Also Published As
| Publication number | Publication date |
|---|---|
| CS9101401A2 (en) | 1991-12-17 |
| ATA105790A (en) | 1991-02-15 |
| ES2064982T3 (en) | 1995-02-01 |
| DE59103079D1 (en) | 1994-11-03 |
| HUT57296A (en) | 1991-11-28 |
| HU215423B (en) | 1998-12-28 |
| SK278855B6 (en) | 1998-04-08 |
| AT393250B (en) | 1991-09-10 |
| CZ279514B6 (en) | 1995-05-17 |
| DK0457754T3 (en) | 1994-11-14 |
| EP0457754A3 (en) | 1993-04-21 |
| EP0457754A2 (en) | 1991-11-21 |
| PL164324B1 (en) | 1994-07-29 |
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