EP0441766B1 - Apparatus for hardening rails - Google Patents
Apparatus for hardening rails Download PDFInfo
- Publication number
- EP0441766B1 EP0441766B1 EP91890008A EP91890008A EP0441766B1 EP 0441766 B1 EP0441766 B1 EP 0441766B1 EP 91890008 A EP91890008 A EP 91890008A EP 91890008 A EP91890008 A EP 91890008A EP 0441766 B1 EP0441766 B1 EP 0441766B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rail
- rails
- support
- support arms
- dipping bath
- 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
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/62—Quenching devices
- C21D1/63—Quenching devices for bath quenching
Definitions
- the invention relates to a device for hardening the rail head of rails, consisting of a plunge pool for the rail head, a manipulator for taking over individual rails resting on head and foot from a feed conveyor and for immersing the rail head into the plunge pool and from a conveyor for removal of the treated rails.
- At least the rail head is quenched by a coolant, with immersion of the rail head in the coolant being preferred because of the associated quenching conditions that are more uniform over the length of the rail than spraying on the coolant (AT-PS 375 402).
- the immersion of the rail head in a plunge pool requires a suitable manipulator as part of series production, which takes over the rails conveyed via a feed conveyor individually and dips the rail head downwards to deter the plunge pool.
- the invention is therefore based on the object of providing a manipulator for a device of the type described at the outset which is not only of simple construction but also allows monitoring of the rail handling.
- the invention solves this problem in that the manipulator on both longitudinal sides of the plunge pool has height-adjustable and pivotable about an axis running in the longitudinal direction of the plunge pool support arms that protrude against the plunge pool support approaches for the rail foot for receiving the rail to be handled with Form the rail head pointing below and the rail web protruding downwards between the support lugs.
- the provision of support arms on both sides of the plunge pool initially creates a simple, space-saving possibility of immersing the rail held between these support arms, with the rail head pointing downwards, into the plunge pool by lowering the support arms.
- the pivotability of these support arms about an axis running in the longitudinal direction of the plunge pool also allows the rails resting on the head and foot to be taken from the feed conveyor in the correct position in a simple manner because the inclined rail foot is pivoted on both sides with the aid of the support lugs by a corresponding pivoting of the support arms extended to different heights the support arms can be gripped before the rail is rotated by compensating for the different stroke positions of the support arms in the rotational position required for immersion.
- the rail remains accessible from above during its handling, which considerably simplifies its monitoring.
- the rail is transferred via the support arms from the plunge pool into the conveying plane of the conveying device, the support arms having to be swung apart in order to release the rail head.
- the pivoting possibility required for gripper-like detection of the rails could possibly take over the Rails are used by the feed conveyor connected laterally to the manipulator or for transfer to the conveyor for the removal of the rails.
- the feed conveyor can consist of a support fork forming a stop running in the longitudinal direction of the plunge pool for the rails.
- a leveling process is thus associated with the transverse conveying of the rails because the individual rails lie against the stop of the carrying fork.
- the design of the feeder as a carrying fork also has the advantage that the support arms of the manipulator with their support lugs can grip between the fork tines for trouble-free transfer of the rails.
- the rail that is being conveyed can be taken over with the support fork and put down again after the cross-conveying, for example on an intermediate carrier, which means that the support fork is withdrawn before the takeover the rail through the manipulator and thus possibly shortening the cycle times allowed.
- an intermediate carrier which means that the support fork is withdrawn before the takeover the rail through the manipulator and thus possibly shortening the cycle times allowed.
- the conveyor for the removal of the rails as an intermediate carrier because of the necessity to also withdraw this intermediate carrier from the lifting range of the support arms.
- This conveyor is functionally retractable from the support arm area and is otherwise not required during the rail transfer from the feeder to the manipulator.
- the rails quenched in the plunge pool are generally fed to a cooling bed.
- the transfer of the treated rails from the supporting arms of the manipulator to the cooling bed can be ensured in a structurally very simple manner in that the conveying device for removing the rails consists of at least one conveying lever carrying the rail support with a pivot axis running in the longitudinal direction of the plunge pool.
- the conveying device for removing the rails consists of at least one conveying lever carrying the rail support with a pivot axis running in the longitudinal direction of the plunge pool.
- Different drives can be used to move the manipulator support arms. Particularly favorable construction conditions result, however, if the support arms have a rack meshing with a drive pinion, which ensures simple height control of the support arms.
- the support arms which can be raised and lowered in this way, they can be mounted in a stroke guide which can be pivoted about the axis of the drive pinion extending in the longitudinal direction of the plunge pool, which creates advantageous design conditions with regard to the drive connection of the drive pinion.
- Appropriate actuators can be used to pivot the support arms around the axis of the drive pinion are used, for example eccentric drives, which can be actuated via a common actuating shaft at least for all support arms on one side of the pool.
- the device shown essentially consists of a feed conveyor 1 between a roller table 3 which feeds from a rolling mill in the longitudinal direction and a manipulator 4 for immersing the rail head 5 into a plunge pool 6 and a conveyor device 7 for removing the treated rails 2 be placed on a cooling bed 8 in a corresponding immersion bath after the quenching.
- the feed conveyor 1 is designed as a carrying fork 9 with supporting tines 11 resulting in a rail support 10, which reach between the rollers of the roller table 3 in order to lift the rail 2 from the roller table 3 and to be able to convey the manipulator 4.
- the carrying fork 9 is connected to a guide rail 12 which is held transversely to the longitudinal axis of the rail 2 in a roller guide 13 and carries a rack 14 which meshes with a pinion 15 so that the carrying fork 9 via the pinion 15 in Direction of arrow 16 can be driven. Since the guide rail 12 is also supported on a roller 13a of the roller guide 13 which is height-adjustable via an eccentric drive 17, the carrying fork 9 can additionally be pivoted about the axis of the pinion 15 in order to lift the rail 2 off the roller table.
- the carrying fork 9 To feed the rails 2 to the manipulator 4 in a position aligned with respect to the plunge pool 6, the carrying fork 9 has a stop 18 running in the longitudinal direction of the plunge pool, against which the rails 2 strike when they are taken over by the carrying fork 9.
- the manipulator 4 taking over the rails 2 essentially consists of support arms 20 which are arranged on both longitudinal sides of the plunge pool 6 and which are displaceable in height in lifting guides 19, which on the one hand have guide rollers 21 mounted in a housing and on the other hand have a rack 22 associated with the support arm Intermeshing drive pinions 23 are formed so that the support arms 20 can be adjusted in height within the stroke guides 19 via the drive pinions 23.
- the lifting guides 19 are also connected to a swivel drive 24, preferably an eccentric drive, by means of which the support arms 20 can be pivoted about the drive shafts 25 of the drive pinion 23.
- the support arms 20 have at their upper end support lugs 26, with which they protrude in the working positions shown in Fig. 2 with full and dashed lines against the web 27 of the rail 2 and the rail base 28 in the immersion position with the rail head 5 pointing downwards reach under.
- the support arms 20 are extended into the position shown in dash-dotted lines by means of the rack and pinion drive, in order to grasp the rail resting on the support prongs 11 of the support fork 9 between them.
- the support arms 20 assigned to the rail foot part protruding from the rail support 10 must first be swung out on one side of the plunge pool in order to be able to grip around the rail head 5 lying laterally next to the rail foot with the support lugs 26.
- the support arms 20 are to be extended to different heights on the two sides of the plunge pool, so that the inclined position of the rail foot 28 at its Under reach can be taken into account.
- the rail 2 to be quenched can be taken over by the manipulator, with a height compensation of the support arms 20 ensuring the rail rotation into the immersion position, as is indicated by the broken lines in FIG. 2.
- the rail 2 can therefore be immersed in the plunge pool 6 for hardening the rail head after the support arms 9 have been withdrawn from the support arm region via the support arms 20 with the rail head 5.
- the quenched rail 2 is transferred to the conveyor device 7, which is made up of at least one conveyor lever 30 provided with a rail support 29 which grips between the support arms.
- the conveyor device 7 By pivoting this conveying lever 30 about an axis 31 running in the longitudinal direction of the conveying basin 6 from the takeover position drawn in full lines in FIG. 1 into the transfer position indicated by dash-dotted lines, the respective rail 2 can be placed on the cooling bed 8, which, for example, a step conveyor for step-wise May have transmission of the rails.
- the transfer of the treated rails by the conveyor lever 30 takes place in a reverse sequence to the feeding of the rails to the manipulator 4.
- the conveyor lever 30 After lifting the rail over the support arms 20, the conveyor lever 30 is pivoted with its rail support under the rail 2, so that after the support arms have been lowered and spread apart, the rail comes to rest on the rail support 29 of the conveyor lever 30, specifically with a head and footrest.
- the support arms 20 of the manipulator 4 retracted into the starting position according to FIG. 1 in no way hinder the subsequent conveying step of the conveying lever 30.
- the rail 4 to be taken over by the manipulator can first be taken over by the conveying device 7, which is adjusted for this purpose into the swivel position shown with full lines.
- the takeover of the rail 2 resting on the rail support 29 by the support arms 20 of the manipulator 4 then takes place in the manner already described for the takeover by the feed conveyor 1.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Eyeglasses (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Vorrichtung zum Härten des Schienenkopfes von Schienen, bestehend aus einem Tauchbecken für den Schienenkopf, einem Manipulator zum Übernehmen einzelner auf Kopf und Fuß aufliegender Schienen von einem Zuförderer und zum Eintauchen des Schienenkopfes in das Tauchbecken und aus einer Fördereinrichtung zum Abtransport der behandelten Schienen.The invention relates to a device for hardening the rail head of rails, consisting of a plunge pool for the rail head, a manipulator for taking over individual rails resting on head and foot from a feed conveyor and for immersing the rail head into the plunge pool and from a conveyor for removal of the treated rails.
Zum Härten von Schienen, vorzugsweise aus der Walzhitze, wird zumindest der Schienenkopf durch ein Kühlmittel abgeschreckt, wobei einem Eintauchen des Schienenkopfes in das Kühlmittel wegen der damit verbundenen, über die Schienenlänge gleichmäßigeren Abschreckbedingungen der Vorzug gegenüber einem Aufsprühen des Kühlmittels gegeben wird (AT-PS 375 402). Das Eintauchen des Schienenkopfes in ein Tauchbecken erfordert allerdings im Rahmen einer Serienfertigung einen geeigneten Manipulator, der die über einen Zuförderer angeförderten Schienen einzeln übernimmt und mit dem Schienenkopf nach unten zur Abschreckung in das Tauchbecken eintaucht.For hardening rails, preferably from the rolling heat, at least the rail head is quenched by a coolant, with immersion of the rail head in the coolant being preferred because of the associated quenching conditions that are more uniform over the length of the rail than spraying on the coolant (AT-PS 375 402). The immersion of the rail head in a plunge pool, however, requires a suitable manipulator as part of series production, which takes over the rails conveyed via a feed conveyor individually and dips the rail head downwards to deter the plunge pool.
Zu diesem Zweck ist es bekannt (DE-C-503 369), oberhalb des Tauchbeckens auf einer gemeinsamen Welle angeordnete Tragarme zur Aufnahme des Schienenfußes der jeweils handzuhabenden Schiene vorzusehen und diesen Tragarmen zangenartige Spannbacken zuzuordnen, die den Schienenfuß auf den Tragarmen festklemmen. Die so mit radial nach außen weisendem Schienenkopf auf den Tragarmen eingespannte Schiene kann daher über die gemeinsame Welle der Tragarme nach unten verschwenkt und mit dem Schienenkopf in ein Tauchbecken eingetaucht werden. Abgesehen von der vergleichsweise aufwendigen Konstruktion ergibt sich bei diesem bekannten Manipulator der Nachteil, daß die Schiene nach oben durch den Manipulator abgedeckt ist, und daher beim Härten kaum überwacht werden kann.For this purpose it is known (DE-C-503 369) to provide support arms arranged on a common shaft above the plunge pool for receiving the rail foot of the rail to be handled in each case, and these support arms have pliers-like clamping jaws assign that clamp the rail foot on the support arms. The rail thus clamped on the support arms with the rail head pointing radially outward can therefore be pivoted downwards via the common shaft of the support arms and immersed with the rail head in a plunge pool. Apart from the comparatively complex construction, this known manipulator has the disadvantage that the rail is covered at the top by the manipulator and can therefore hardly be monitored during hardening.
Der Erfindung liegt demnach die Aufgabe zugrunde, für eine Vorrichtung der eingangs geschilderten Art einen Manipulator zu schaffen, der nicht nur einfach aufgebaut ist, sondern auch eine Überwachung der Schienenhandhabung erlaubt.The invention is therefore based on the object of providing a manipulator for a device of the type described at the outset which is not only of simple construction but also allows monitoring of the rail handling.
Die Erfindung löst die gestellte Aufgabe dadurch, daß der Manipulator auf beiden Längsseiten des Tauchbeckens der Höhe nach verschiebbare und um eine in Längsrichtung des Tauchbeckens verlaufende Achse verschwenkbare Tragarme aufweist, die gegen das Tauchbecken vorragende Auflageansätze für den Schienenfuß zur Aufnahme der jeweils handzuhabenden Schiene mit nach unten weisendem Schienenkopf und zwischen den Auflageansätzen nach unten ragendem Schienensteg bilden.The invention solves this problem in that the manipulator on both longitudinal sides of the plunge pool has height-adjustable and pivotable about an axis running in the longitudinal direction of the plunge pool support arms that protrude against the plunge pool support approaches for the rail foot for receiving the rail to be handled with Form the rail head pointing below and the rail web protruding downwards between the support lugs.
Das Vorsehen von Tragarmen beidseits des Tauchbeckens schafft zunächst eine einfache, raumsparende Möglichkeit, die jeweils zwischen diesen Tragarmen gehaltene, mit dem Schienenkopf nach unten weisende Schiene in das Tauchbecken durch ein Absenken der Tragarme einzutauchen. Die Verschwenkbarkeit dieser Tragarme um eine in Längsrichtung des Tauchbeckens verlaufende Achse erlaubt darüber hinaus in einfacher Weise ein lagerichtiges Übernehmen der auf Kopf und Fuß aufliegenden Schienen vom Zuförderer, weil durch ein entsprechendes Einschwenken der in unterschiedliche Höhen ausgeschobenen Tragarme der geneigte Schienenfuß beidseitig mit Hilfe der Auflageansätze der Tragarme untergriffen werden kann, bevor die Schiene durch ein Ausgleichen der unterschiedlichen Hublagen der Tragarme in die für das Eintauchen erforderliche Drehlage gedreht wird. Sind dabei die Auflageansätze an den oberen Enden der Tragarme angeordnet, verlaufen also die Tragarme zumindest im wesentlichen unterhalb der Förderebene des Zuförderers, so bleibt die Schiene während ihrer Handhabung von oben zugänglich, was deren Überwachung erheblich vereinfacht. Nach der Wärmebehandlung wird die Schiene über die Tragarme aus dem Tauchbecken in die Förderebene der Fördereinrichtung übergeben, wobei die Tragarme auseinanderzuschwenken sind, um den Schienenkopf freizugeben.The provision of support arms on both sides of the plunge pool initially creates a simple, space-saving possibility of immersing the rail held between these support arms, with the rail head pointing downwards, into the plunge pool by lowering the support arms. The pivotability of these support arms about an axis running in the longitudinal direction of the plunge pool also allows the rails resting on the head and foot to be taken from the feed conveyor in the correct position in a simple manner because the inclined rail foot is pivoted on both sides with the aid of the support lugs by a corresponding pivoting of the support arms extended to different heights the support arms can be gripped before the rail is rotated by compensating for the different stroke positions of the support arms in the rotational position required for immersion. If the support lugs are arranged at the upper ends of the support arms, ie if the support arms run at least substantially below the conveying plane of the feed conveyor, the rail remains accessible from above during its handling, which considerably simplifies its monitoring. After the heat treatment, the rail is transferred via the support arms from the plunge pool into the conveying plane of the conveying device, the support arms having to be swung apart in order to release the rail head.
Die für das zangenartige Erfassen der Schienen erforderliche Schwenkmöglichkeit könnte unter Umständen zur Übernahme der Schienen von dem seitlich an den Manipulator anschließenden Zuförderer bzw. zum Übergeben an die Fördereinrichtung für den Abtransport der Schienen ausgenützt werden. Einfachere Konstruktionsverhältnisse, die eine sichere Übernahme der auf Kopf und Fuß aufliegenden Schienen gewährleisten können, ergeben sich allerdings, wenn der Zuförderer bzw. die Fördereinrichtung zum Abtransport der Schienen als Querförderer mit einer die Hubbahn der Tragarme kreuzenden Bewegungsbahn für eine aus dem Tragarmbereich zurückziehbare Schienenauflage ausgebildet ist. In diesem Fall wird nämlich für die Schienen eine vorteilhafte Übergabe- bzw. Übermahmelage zwischen den Tragarmen und dem vertikal über die Tragarme verfahrbaren Querförderer sichergestellt. Voraussetzung hiefür ist, daß die Schienenauflage des jeweiligen Querförderers aus dem Tragarmbereich zurückgezogen werden kann, um das Absenken bzw. Anheben der Schienen gegenüber der Förderebene der Querförderer zu ermöglichen.The pivoting possibility required for gripper-like detection of the rails could possibly take over the Rails are used by the feed conveyor connected laterally to the manipulator or for transfer to the conveyor for the removal of the rails. Simpler design conditions, which can ensure a safe transfer of the rails resting on the head and foot, result, however, if the feed conveyor or the conveying device for removing the rails is designed as a cross conveyor with a movement path crossing the stroke path of the support arms for a rail support that can be withdrawn from the support arm area is. In this case, an advantageous transfer or transfer position between the support arms and the cross conveyor which can be moved vertically via the support arms is ensured for the rails. The prerequisite for this is that the rail support of the respective cross conveyor can be withdrawn from the support arm area in order to enable the rails to be lowered or raised relative to the conveying plane of the cross conveyor.
Da die Ausrichtung der zu behandelnden Schienen in Längsrichtung des Tauchbeckens nicht immer gewährleistet sein wird, kann der Zuförderer aus einer einen in Tauchbeckenlängsrichtung verlaufenden Anschlag für die Schienen bildenden Traggabel bestehen. Mit der Querförderung der Schienen ist somit ein Richtvorgang verbunden, weil sich die einzelnen Schienen an den Anschlag der Traggabel anlegen. Die Ausbildung des Zuförderers als Traggabel bringt außerdem den Vorteil mit sich, daß die Tragarme des Manipulators mit ihren Auflageansätzen zur störungsfreien Übernahme der Schienen zwischen die Gabelzinken greifen können. Ist dabei die Traggabel für die Schienen um eine in Längsrichtung des Tauchbeckens verlaufende Achse verschwenkbar gelagert, so kann die jeweils angeförderte Schiene mit Hilfe der Traggabel übernommen und nach der Querförderung wieder abgelegt werden, beispielsweise auf einen Zwischenträger, was ein Rückziehen der Traggabel vor der Übernahme der Schiene durch den Manipulator und damit unter Umständen eine Verkürzung der Taktzeiten erlaubt. Wegen der Notwendigkeit, auch diesen Zwischenträger aus dem Hubbereich der Tragarme zurückzuziehen, empfiehlt es sich in einem solchen Fall, die Fördereinrichtung für den Abtransport der Schienen als Zwischenträger heranzuziehen. Diese Fördereinrichtung ist ja funktionsbedingt aus dem Tragarmbereich zurückziehbar angeordnet und wird sonst während der Schienenübergabe vom Zuförderer an den Manipulator nicht benötigt.Since the alignment of the rails to be treated in the longitudinal direction of the plunge pool will not always be guaranteed, the feed conveyor can consist of a support fork forming a stop running in the longitudinal direction of the plunge pool for the rails. A leveling process is thus associated with the transverse conveying of the rails because the individual rails lie against the stop of the carrying fork. The design of the feeder as a carrying fork also has the advantage that the support arms of the manipulator with their support lugs can grip between the fork tines for trouble-free transfer of the rails. If the support fork for the rails is mounted so that it can pivot about an axis running in the longitudinal direction of the plunge pool, the rail that is being conveyed can be taken over with the support fork and put down again after the cross-conveying, for example on an intermediate carrier, which means that the support fork is withdrawn before the takeover the rail through the manipulator and thus possibly shortening the cycle times allowed. In such a case, it is advisable to use the conveyor for the removal of the rails as an intermediate carrier because of the necessity to also withdraw this intermediate carrier from the lifting range of the support arms. This conveyor is functionally retractable from the support arm area and is otherwise not required during the rail transfer from the feeder to the manipulator.
Die im Tauchbecken abgeschreckten Schienen werden im allgemeinen einem Kühlbett zugeführt. Die Übergabe der behandelten Schienen von den Tragarmen des Manipulators an das Kühlbett kann in konstruktiv sehr einfacher Weise dadurch sichergestellt werden, daß die Fördereinrichtung zum Abtransport der Schienen aus wenigstens einem die Schienenauflage tragenden Förderhebel mit in Tauchbeckenlängsrichtung verlaufender Schwenkachse besteht. Durch eine Schwenkverstellung des Förderhebels, der bei einer ausreichenden Hebelarmlänge auch größere Förderwege mit einem kleinen Schwenkwinkel abdecken kann, kann die von den Tragarmen des Manipulators übernommene Schiene auf das Kühlbett oder einen Kühlbettförderer übergeben werden, wobei die Schiene wieder auf Kopf und Fuß zu liegen kommt.The rails quenched in the plunge pool are generally fed to a cooling bed. The transfer of the treated rails from the supporting arms of the manipulator to the cooling bed can be ensured in a structurally very simple manner in that the conveying device for removing the rails consists of at least one conveying lever carrying the rail support with a pivot axis running in the longitudinal direction of the plunge pool. Through a swivel adjustment of the conveyor lever, which can cover larger conveying paths with a small swivel angle if the lever arm is long enough, the rail taken over by the manipulator support arms can be transferred to the cooling bed or a cooling bed conveyor, whereby the rail comes to rest on head and foot .
Zur Verschiebung der Tragarme des Manipulators können unterschiedliche Antriebe eingesetzt werden. Besonders günstige Konstruktionsbedingungen ergeben sich allerdings, wenn die Tragarme eine mit einem Antriebsritzel kämmende Zahnstange aufweisen, die eine einfache Höhensteuerung der Tragarme sicherstellt. Zum Verschwenken der in dieser Art heb- und senkbaren Tragarme können diese in einer um die in Tauchbeckenlängsrichtung verlaufende Achse des Antriebsritzels verschwenkbaren Hubführung gelagert sein, was bezüglich der Antriebsverbindung des Antriebsritzels vorteilhafte Konstruktionsbedingungen schafft. Zum Verschwenken der Tragarme um die Achse des Antriebsritzels können entsprechende Stelltriebe eingesetzt werden, beispielsweise Exzentertriebe, die über eine gemeinsame Stellwelle zumindest für alle Tragarme auf einer Beckenseite betätigt werden können.Different drives can be used to move the manipulator support arms. Particularly favorable construction conditions result, however, if the support arms have a rack meshing with a drive pinion, which ensures simple height control of the support arms. For pivoting the support arms, which can be raised and lowered in this way, they can be mounted in a stroke guide which can be pivoted about the axis of the drive pinion extending in the longitudinal direction of the plunge pool, which creates advantageous design conditions with regard to the drive connection of the drive pinion. Appropriate actuators can be used to pivot the support arms around the axis of the drive pinion are used, for example eccentric drives, which can be actuated via a common actuating shaft at least for all support arms on one side of the pool.
In der Zeichnung ist der Erfindungsgegenstand beispielsweise Dargestellt. Es zeigen
- Fig. 1
- eine erfindungsgemäße Vorrichtung zum Härten von Schienen in einer schematischen, teilweise aufgerissenen Seitenansicht und
- Fig. 2
- den Manipulator dieser Vorrichtung in einer teilweise aufgerissenen Ansicht in Richtung der Tauchbeckenlängsachse in einem größeren Maßstab.
- Fig. 1
- an inventive device for hardening rails in a schematic, partially broken side view and
- Fig. 2
- the manipulator of this device in a partially broken view in the direction of the longitudinal axis of the plunge pool on a larger scale.
Die dargestellte Vorrichtung besteht im wesentlichen aus einem Zuförderer 1 zwischen einem die aus einer Walzanlage auslaufenden Schienen 2 in Längsrichtung anfördernden Rollgang 3 und einem Manipulator 4 zum Eintauchen des Schienenkopfes 5 in ein Tauchbecken 6 sowie aus einer Fördereinrichtung 7 zum Abtransport der behandelten Schienen 2, die im Anschluß an die Abschreckung in einem entsprechenden Tauchbad auf ein Kühlbett 8 gelegt werden. Wie die Fig. 1 erkennen läßt, ist der Zuförderer 1 als Traggabel 9 mit eine Schienenauflage 10 ergebenden Tragzinken 11 ausgebildet, die zwischen die Rollen des Rollganges 3 greifen, um die Schiene 2 vom Rollgang 3 abheben und dem Manipulator 4 zufördern zu können. Zu diesem Zweck ist die Traggabel 9 mit einer Führungsschiene 12 verbunden, die quer zur Längsachse der Schiene 2 verschiebbar in einer Rollenführung 13 gehalten ist und eine Zahnstange 14 trägt, die mit einem Ritzel 15 kämmt, so daß die Traggabel 9 über das Ritzel 15 in Richtung des Pfeiles 16 angetrieben werden kann. Da sich die Führungsschiene 12 außerdem auf einer über einen Exzentertrieb 17 der Höhe nach verstellbaren Laufrolle 13a der Rollenführung 13 abstützt, kann die Traggabel 9 zusätzlich um die Achse des Ritzels 15 verschwenkt werden, um die Schiene 2 vom Rollgang abzuheben. Zum Zuführen der Schienen 2 zum Manipulator 4 in einer gegenüber dem Tauchbecken 6 ausgerichteten Lage weist die Traggabel 9 einen in Tauchbeckenlängsrichtung verlaufenden Anschlag 18 auf, an dem die Schienen 2 bei der Übernahme durch die Traggabel 9 anschlagen.The device shown essentially consists of a
Der die Schienen 2 übernehmende Manipulator 4 besteht im wesentlichen aus auf beiden Längsseiten des Tauchbeckens 6 angeordneten, der Höhe nach in Hubführungen 19 verschiebbar gelagerten Tragarmen 20, die einerseits von in einem Gehäuse gelagerten Führungsrollen 21 und anderseits von einem mit einer dem Tragarm zugehörigen Zahnstange 22 kämmenden Antriebsritzel 23 gebildet werden, so daß die Tragarme 20 über die Antriebsritzel 23 der Höhe nach innerhalb der Hubführungen 19 verstellbar sind. Die Hubführungen 19 sind außerdem mit einem Schwenktrieb 24, vorzugsweise einem Exzentertrieb, verbunden, mit dessen Hilfe die Tragarme 20 um die Antriebswellen 25 der Antriebsritzel 23 verschwenkt werden können.The
Die Tragarme 20 weisen an ihrem oberen Ende Auflageansätze 26 auf, mit denen sie in den in Fig. 2 mit vollen und strichlierten Linien dargestellten Arbeitsstellungen gegen den Steg 27 der Schiene 2 vorragen und den Schienenfuß 28 in der Tauchlage mit nach unten weisendem Schienenkopf 5 beidseitig untergreifen. Zum Übernehmen der Schienen 2 vom Zuförderer 1 werden die Tragarme 20 in die strichpunktiert eingezeichnete Stellung mittels des Zahnstangenantriebes ausgefahren, um die über Fuß und Kopf auf den Tragzinken 11 der Traggabel 9 aufliegende Schiene zwischen sich zu erfassen. Zu diesem Zweck müssen zumindest die dem von der Schienenauflage 10 abstehenden Schienenfußteil zugeordneten Tragarme 20 auf der einen Tauchbeckenseite vorerst ausgeschwenkt werden, um den seitlich neben dem Schienenfuß aufliegenden Schienenkopf 5 mit den Auflageansätzen 26 umgreifen zu können. Wie sich aus der Fig. 2 unmittelbar ergibt, sind die Tragarme 20 auf den beiden Tauchbeckenseiten in unterschiedliche Höhen auszufahren, damit der Neigungslage des Schienenfußes 28 bei seinem Untergreifen Rechnung getragen werden kann. Durch ein weiteres Anheben der Tragarme 20 bzw. ein Absenken der Tragzinken 11 kann die abzuschreckende Schiene 2 von dem Manipulator übernommen werden, wobei mit einen Höhenausgleich der Tragarme 20 die Schienendrehung in die Tauchlage gewährleistet wird, wie dies in Fig. 2 strichliert angedeutet ist. Die Schiene 2 kann daher nach dem Zurückziehen der Tragbabel 9 aus dem Tragarmbereich über die Tragarme 20 mit dem Schienenkopf 5 in das Tauchbecken 6 zur Schienenkopfhärtung eingetaucht werden.The
Nach dieser Schienenbehandlung wird die abgeschreckte Schiene 2 der Fördereinrichtung 7 übergeben, die aus wenigstens einem mit einer zwischen die Tragarme greifenden Schienenauflage 29 versehenen Förderhebel 30 aufgebaut ist. Durch ein Verschwenken dieses Förderhebels 30 um eine in Längsrichtung des Förderbeckens 6 verlaufende Achse 31 aus der in Fig. 1 mit vollen Linien gezeichneten Übernahmestellung in die strichpunktiert angedeutete Übergabestellung kann die jeweilige Schiene 2 auf das Kühlbett 8 abgelegt werden, das beispielsweise einen Schrittförderer zur schrittweisen Weitergabe der Schienen aufweisen kann. Die Übernahme der behandelten Schienen durch den Förderhebel 30 erfolgt in einer gegenüber dem Zuführen der Schienen zum Manipulator 4 umgekehrten Reihenfolge. Nach dem Anheben der Schiene über die Tragarme 20 wird der Förderhebel 30 mit seiner Schienenauflage unter die Schiene 2 eingeschwenkt, so daß nach einem Absenken und Auseinanderspreizen der Tragarme die Schiene auf der Schienenauflage 29 des Förderhebels 30 zu liegen kommt, und zwar mit einer Kopf- und Fußabstützung. Die in die Ausgangsstellung nach Fig. 1 zurückgezogenen Tragarme 20 des Manipulators 4 behindern den anschließenden Förderschritt des Förderhebels 30 in keiner Weise.After this rail treatment, the quenched
Um den Zuförderer 1 bereits vor der Schienenübernahme durch den Manipulator 4 in seine Ausgangsstellung zurückziehen zu können, was eine Voraussetzung für das Anfördern einer neuen Schiene über den Rollgang 3 ist, kann die vom Manipulator zu übernehmende Schiene 4 zunächst von der Fördereinrichtung 7 übernommen werden, die zu diesem Zweck in die mit vollen Linien dargestellte Schwenklage verstellt wird. Die Übernahme der auf der Schienenauflage 29 ruhenden Schiene 2 durch die Tragarme 20 des Manipulators 4 erfolgt dann in der bereits für die Übernahme vom Zuförderer 1 geschilderten Art und Weise.To pull the
Claims (8)
- Apparatus for hardening the head (5) of rails (2), consisting of a dipping bath (6) for the rail head (5), a manipulator (4) for taking from a feeder individual rails (2) resting on their head and base and for dipping the rail head (5) into the dipping bath (6), and a conveyor means for discharging the treated rails (2), characterised in that the manipulator (4) has, on both longitudinal sides of the dipping bath (6), vertically displaceable support arms (20) pivotable about an axis (25) extending in the longitudinal direction of the dipping bath (6), said support arms (20) forming support lugs (26) projecting towards the dipping bath (6) for the rail base (28), in order to receive the rail (2) for handling with the rail head (5) pointing downwards and with the rail web (27) extending downwardly between the support lugs (26).
- Apparatus according to claim 1, characterised in that the feeder (1) and the conveyor means (7) for discharging the rails (2) are constructed as transverse conveyors, in which the trajectory for a rail support (10; 29) withdrawable from the area of the support arms (20) crosses the lifting path of said support arms (20).
- Apparatus according to claim 2, characterised in that the feeder (1) consists of a support fork (9) which forms a stop (18) for the rails (2), such stop extending in the longitudinal direction of the dipping bath.
- Apparatus according to claim 3, characterised in that the support fork (9) for the rails (2) is mounted to pivot about an axis extending in the longitudinal direction of the dipping bath (6).
- Apparatus according to claim 2, characterised in that the conveyor means (7) for discharging the rails consists of at least one conveyor lever (30) carrying the rail support (29) and having its pivot axis (31) extending in the longitudinal direction of the dipping bath.
- Apparatus according to any one of claims 1 to 5, characterised in that the support arms (20) have a rack (22) engaging a pinion (23).
- Apparatus according to claim 6, characterised in that the support arms (20) are mounted in a guide (19) pivotable about the axis (25) of the pinion (23) extending in the longitudinal direction of the dipping bath.
- Apparatus according to claim 7, characterised in that the guides (19) are pivotable by means of an eccentric drive.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4003363A DE4003363C1 (en) | 1990-02-05 | 1990-02-05 | Hardening rails from rolling temp. - using appts. with manipulator engaging rail from exit roller table with support arms positioned pivotably on each side |
| DE4003363 | 1990-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0441766A1 EP0441766A1 (en) | 1991-08-14 |
| EP0441766B1 true EP0441766B1 (en) | 1994-12-21 |
Family
ID=6399457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP91890008A Expired - Lifetime EP0441766B1 (en) | 1990-02-05 | 1991-01-17 | Apparatus for hardening rails |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5054746A (en) |
| EP (1) | EP0441766B1 (en) |
| AT (1) | ATE116008T1 (en) |
| DE (2) | DE4003363C1 (en) |
| ES (1) | ES2068564T3 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT402941B (en) | 1994-07-19 | 1997-09-25 | Voest Alpine Schienen Gmbh | METHOD AND DEVICE FOR THE HEAT TREATMENT OF PROFILED ROLLING MATERIAL |
| AT407057B (en) * | 1996-12-19 | 2000-12-27 | Voest Alpine Schienen Gmbh | PROFILED ROLLING MATERIAL AND METHOD FOR THE PRODUCTION THEREOF |
| AT409268B (en) * | 2000-05-29 | 2002-07-25 | Voest Alpine Schienen Gmbh & C | METHOD AND DEVICE FOR HARDENING RAILS |
| AT410549B (en) * | 2001-09-13 | 2003-05-26 | Voest Alpine Schienen Gmbh & C | DEVICE FOR TURNING ROLLED GOODS WITH LONG LENGTH |
| ITMI20072244A1 (en) * | 2007-11-28 | 2009-05-29 | Danieli Off Mecc | DEVICE FOR HEAT TREATMENT OF RAILS AND ITS PROCESS |
| AT505930B1 (en) * | 2008-02-04 | 2009-05-15 | Voestalpine Schienen Gmbh | DEVICE FOR HARDENING RAILS |
| IT1392807B1 (en) * | 2009-02-03 | 2012-03-23 | Danieli Off Mecc | RAIL HANDLING MACHINE AND RELATIVE HANDLING PROCESS |
| ITMI20090892A1 (en) * | 2009-05-20 | 2010-11-21 | Danieli Off Mecc | COOLING TANK FOR RAILS |
| CN105506243B (en) * | 2016-01-05 | 2017-07-25 | 中冶东方工程技术有限公司 | A kind of press quenching system and technique |
| CN109629354B (en) * | 2018-12-11 | 2023-10-20 | 株洲旭阳机电科技开发有限公司 | Roller retraction device for rail laying, tractor and rail laying operation method |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE503369C (en) * | 1926-02-24 | 1930-07-23 | Maximilianshuette Eisenwerk | Device and method for hardening the head of railroad tracks hanging upside down by means of a pincer-like jig |
| AT118186B (en) * | 1928-01-07 | 1930-06-25 | Maximilianshuette Eisenwerk | Device for the simultaneous hardening of the head of several railroad tracks. |
| US2095946A (en) * | 1934-03-31 | 1937-10-12 | Chiers Hauts Fourneaux | Apparatus for tempering rails |
| AT166031B (en) * | 1946-07-17 | 1950-05-25 | Petits Fils De Rancois De Wend | Method and procedure for the manufacture of hardened railroad tracks |
| US2634121A (en) * | 1948-12-15 | 1953-04-07 | Borg Warner | Apparatus for handling and surfacehardening articles |
| AT375402B (en) * | 1982-03-09 | 1984-08-10 | Voest Alpine Ag | METHOD FOR HEAT-TREATING RAILS |
| CA1193176A (en) * | 1982-07-06 | 1985-09-10 | Robert J. Ackert | Method for the production of improved railway rails by accelerated colling in line with the production rolling mill |
| IT1179616B (en) * | 1984-04-20 | 1987-09-16 | Olivotto Spa | PROCESS FOR HARDENING OF ELONGATED METAL ELEMENTS |
| DE3721665C1 (en) * | 1987-06-26 | 1988-04-14 | Mannesmann Ag | Process for hardening a hollow body |
-
1990
- 1990-02-05 DE DE4003363A patent/DE4003363C1/en not_active Expired - Lifetime
-
1991
- 1991-01-17 ES ES91890008T patent/ES2068564T3/en not_active Expired - Lifetime
- 1991-01-17 DE DE59103940T patent/DE59103940D1/en not_active Expired - Fee Related
- 1991-01-17 AT AT91890008T patent/ATE116008T1/en not_active IP Right Cessation
- 1991-01-17 EP EP91890008A patent/EP0441766B1/en not_active Expired - Lifetime
- 1991-02-01 US US07/649,760 patent/US5054746A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| ATE116008T1 (en) | 1995-01-15 |
| EP0441766A1 (en) | 1991-08-14 |
| DE4003363C1 (en) | 1991-03-28 |
| DE59103940D1 (en) | 1995-02-09 |
| US5054746A (en) | 1991-10-08 |
| ES2068564T3 (en) | 1995-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0441766B1 (en) | Apparatus for hardening rails | |
| EP0121130B1 (en) | Process and apparatus for cleaning anode and/or cathode plates obtained in the electrolytic refining of metals | |
| DE1583413B1 (en) | Induction hardening device for rollers | |
| DE1533438C3 (en) | Device for transferring and further conveying finished copper cathode sheet metal units for electrolytic copper refining in a magazine | |
| DE2512613A1 (en) | SUCTION DEVICE FOR CAPTURING AND HANDLING A GENERALLY CUBE-SHAPED BODY | |
| EP0790086B1 (en) | Method and device for separating and further processing of metal bars | |
| DE4113361A1 (en) | Electroplating bath - has anode fixed within bath by external current feeds with current rail system for easy assembly on site | |
| DE2618767C3 (en) | Workpiece conveying device for loading and unloading processing stations | |
| DE2312902A1 (en) | STORAGE DEVICE FOR AN INDEPENDENT TREATMENT DEVICE, IN PARTICULAR FROM A DEVICE FOR INDUCTIVE HARDENING OF WORKPIECES | |
| DE69300219T2 (en) | Method and device for loading a zinc ingot in a zinc melt of a galvanizing plant. | |
| DE2314077C3 (en) | Device for transporting pipes through a heat treatment facility | |
| DE1506846A1 (en) | Conveyor device for elongated objects, such as pipes, in an immersion bath system for transferring the objects from a longitudinal conveyor to a transverse conveyor | |
| DE3306496C2 (en) | ||
| DE1521579A1 (en) | Automatic device for electroplating pipes | |
| DE2329249C3 (en) | Device for hot-dip galvanizing of bulk parts | |
| DE1583338C3 (en) | Method and device for hardening the outer shell of a steel roller provided with a bore | |
| DE3888879T2 (en) | Automatic device for the continuous galvanic treatment of metal bars. | |
| DE636274C (en) | Device for hardening rails | |
| DE481459C (en) | Method and device for transferring goods from one movement system to another, in particular in systems for carrying out galvanic flow work | |
| DE3010100A1 (en) | Piece goods stacking installation - stacks filled sacks on pallets and has three conveyors, two lifting devices and pallet push through guide | |
| DE1583413C (en) | Induction hardness device for rollers | |
| DE1947818C3 (en) | Device for hot-dip galvanizing of pipes | |
| DE3030829A1 (en) | MACHINE FOR REMOVING ITEMS IN ROWS ON A CONTINUOUS TREADMILL | |
| DE1240105B (en) | Device for heating heavy, elongated, metal workpieces, such as roll billets, rods or the like, through direct current passage | |
| DE391700C (en) | Glass casting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
|
| 17P | Request for examination filed |
Effective date: 19911107 |
|
| 17Q | First examination report despatched |
Effective date: 19930810 |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH (HRB 6375) |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19941221 Ref country code: DK Effective date: 19941221 Ref country code: NL Effective date: 19941221 |
|
| REF | Corresponds to: |
Ref document number: 116008 Country of ref document: AT Date of ref document: 19950115 Kind code of ref document: T |
|
| ITF | It: translation for a ep patent filed |
Owner name: STUDIO INGG. FISCHETTI & WEBER |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Effective date: 19950131 Ref country code: LI Effective date: 19950131 |
|
| REF | Corresponds to: |
Ref document number: 59103940 Country of ref document: DE Date of ref document: 19950209 |
|
| ET | Fr: translation filed | ||
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950208 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19950321 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2068564 Country of ref document: ES Kind code of ref document: T3 |
|
| NLV1 | Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19951003 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: LU Payment date: 20090119 Year of fee payment: 19 Ref country code: AT Payment date: 20081215 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: BE Payment date: 20090122 Year of fee payment: 19 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20100222 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20100127 Year of fee payment: 20 Ref country code: FR Payment date: 20100211 Year of fee payment: 20 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20100115 Year of fee payment: 20 |
|
| BERE | Be: lapsed |
Owner name: *VOEST-ALPINE INDUSTRIEANLAGENBAU G.M.B.H. Effective date: 20100131 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100117 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: PE20 Expiry date: 20110116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100131 |
|
| REG | Reference to a national code |
Ref country code: ES Ref legal event code: FD2A Effective date: 20110615 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: ES Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20110118 Ref country code: GB Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION Effective date: 20110116 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20100117 |