EP1001247B1 - Position indicator for measuring the setting stroke way of the roll of a rolling frame - Google Patents

Position indicator for measuring the setting stroke way of the roll of a rolling frame Download PDF

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Publication number
EP1001247B1
EP1001247B1 EP99121755A EP99121755A EP1001247B1 EP 1001247 B1 EP1001247 B1 EP 1001247B1 EP 99121755 A EP99121755 A EP 99121755A EP 99121755 A EP99121755 A EP 99121755A EP 1001247 B1 EP1001247 B1 EP 1001247B1
Authority
EP
European Patent Office
Prior art keywords
housing part
plate
hydraulic cylinder
telescopic
position transmitter
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
Application number
EP99121755A
Other languages
German (de)
French (fr)
Other versions
EP1001247A2 (en
EP1001247A3 (en
Inventor
Klaus Lazzaro
Klaus Bäumer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SMS Siemag AG
Original Assignee
SMS Demag AG
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Filing date
Publication date
Application filed by SMS Demag AG filed Critical SMS Demag AG
Publication of EP1001247A2 publication Critical patent/EP1001247A2/en
Publication of EP1001247A3 publication Critical patent/EP1001247A3/en
Application granted granted Critical
Publication of EP1001247B1 publication Critical patent/EP1001247B1/en
Anticipated expiration legal-status Critical
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B38/00—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product
    • B21B38/10—Methods or devices for measuring, detecting or monitoring specially adapted for metal-rolling mills, e.g. position detection, inspection of the product for measuring roll-gap, e.g. pass indicators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B2203/00—Auxiliary arrangements, devices or methods in combination with rolling mills or rolling methods
    • B21B2203/12—Covers or shieldings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B31/00—Rolling stand structures; Mounting, adjusting, or interchanging rolls, roll mountings, or stand frames
    • B21B31/16—Adjusting or positioning rolls
    • B21B31/20—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis
    • B21B31/32—Adjusting or positioning rolls by moving rolls perpendicularly to roll axis by liquid pressure, e.g. hydromechanical adjusting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58—Roll-force control; Roll-gap control
    • B21B37/62—Roll-force control; Roll-gap control by control of a hydraulic adjusting device

Definitions

  • the invention relates to a position sensor for Anstellhubweglessness of the bearing chocks of the rollers of a rolling mill acted upon hydraulic cylinder, which is guided by a guide piston, wherein the guide piston connected to a plate is supported against the rolling stand, the position sensor consisting of a telescopic housing with a lower housing part and an upper housing part, a displacement sensor and a measuring rod associated with the transducer, wherein the lower housing part receiving the transducer is adapted to be fixedly connected to the hydraulic cylinder, and the upper housing part receiving the measuring rod is adapted to be fixedly connected to the guide piston ,
  • Position encoders of this type are used in the roll stands of roller conveyors in the strip thickness control for adjusting the roll gap between the rolls of the roll stand. In this case, since the nip setting requires high accuracy, only position encoders operating at high resolution are used, and the system must be virtually free of backlash, so that there is no loss of scrap in rolling the ribbons.
  • the position sensor in the form of a cylindrical telescopic housing whose lower part is fixedly connected to the hydraulic cylinder, and the upper part is, acted upon by a, arranged in the lower part of the spring with a, arranged on its front side ball against a, pressed on a plate attached to the guide piston of the hydraulic cylinder plate arranged pressure piece.
  • the bearing of the rollers of the roll stand acting hydraulic cylinder performs during rolling operation as a result of the thereby caused bends of the rolls over its longitudinal axis within the game in the uprights of the mill slight tilting movements. Under certain circumstances, these tilting movements can be transmitted to the sensitive movement system of the dipstick and the displacement transducer and then possibly lead to damage to the dipstick or to incorrect measurements.
  • the invention has for its object to improve the generic position sensor so that in addition to a lighter construction of the telescope housing from the temporary accelerations of the hydraulic cylinder no distortions of the results can occur.
  • This object is achieved by an attachable between the upper housing part of the telescopic housing and the plate elastic bending bar whose longitudinal axis extends in the direction of the lifting movement of the hydraulic cylinder, whose lower end is fixedly connected to the upper housing part of the telescopic housing, and whose upper end is adapted to firmly connected to the plate.
  • the two ends of the bending rod on the one hand to the facing top of the upper part of the telescopic housing and on the other hand on the inner bottom of a, placed on the plate on the guide piston, with its pot opening also the telescopic housing associated pot body aufleg- and releasable be connectable with this.
  • the ends of the bending rod can also be formed flanschusionnförmig extended.
  • the position sensor consists of a telescopic housing, which is composed of a tubular lower housing part 1 and a, in this axially guided upper housing part 2.
  • the lower housing part 2 is connected by means of a clamping jig 3 fixed to the hydraulic cylinder 4, which is guided vertically movable up and down by a guide piston 5, which is connected to a plate 6 against the, not shown, rolling mill.
  • the upper housing part 2 carries below its front side a central clamping device 7 for the measuring rod 8, the axial axial immersed in the, carried by a cylinder sleeve 9 electronic transducer 10.
  • the upper housing part 2 is seated with an outer annular flange 2a on a cylinder spring 11, which is supported against a bottom piece 1a of the lower housing part 1.
  • the guided from this bottom piece 1a to the transducer connecting line is designated 12.
  • The, upwardly facing end face of the upper housing part 2 of the telescopic housing carries a ball camber 13 which acts on a pressure piece 14 which is fixed to the lower wall of the plate 6.
  • the upper housing part 2 and the lower housing part 1 encloses a flexible harmonica protection tube 15 which is attached on the one hand to the circumference of the lower housing part 1 and on the other hand to the pressure piece 14.
  • the upper housing part 2 is pressed by acting on its annular flange 2 a by the cylinder spring 11 in the upward direction against the plate 6 and thus abuts with the ball buckle 13 in the pressure piece 14th
  • the lower housing part 1 of the telescopic housing follows the adjusting movements of the hydraulic cylinder 4 in the direction of the double arrow S shown, since it is firmly connected thereto.
  • the pressure connection of the upper housing part 2 with the plate 6 on the ball buckle 13 and the pressure member 14 is made, because the upper housing part 2 is under the pressure of the cylinder spring 11.
  • Only at a very fast accelerated movement of the hydraulic cylinder 4 down the pressure connection between the ball buckling 13 and thrust piece 14 can solve if the pressure of the cylinder spring 11 is not sufficient, this An horrtagen maintain.
  • the position of the measuring rod 8 in the displacement transducer 10 no longer corresponds to the actual position of the guide piston 5, with the result that incorrect measurement results are forwarded.
  • the training after Fig. 2 corresponds to the Fig. 1 with respect to the fixed connection of the lower housing part 21 of the telescopic housing with the hydraulic cylinder 4 and the guide of the upper housing part 22 in this telescopic housing with the proviso that because of the omission of the cylinder spring 11 used there only, the cylinder sleeve 9 corresponding cylinder sleeve 29, the here also detects the transducer 20 and carries, as a guide element for the comprehensive and it slides on their upper housing part 22, with the result that less and lighter components can be used.
  • the ball buckling pressure piece connection 13, 14 in the training after Fig. 1 is on the plate 6, a pot body 23, directed with its pot opening down, placed and secured via a recess 6a in the carrier 6.
  • the lower housing part 21 and a lower portion of the upper housing part 22 are enclosed by the harmonica protective tube 25, and the, inserted into the central jig 27 dipstick 28 is immersed in the transducer 20 a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Actuator (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Geophysics And Detection Of Objects (AREA)
  • Burglar Alarm Systems (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

Position transmitter comprises a telescopic housing whose lower part holding the displacement transducer (10) is joined to a hydraulic cylinder (4) and whose upper part holding a measuring stick assigned to the transducer is connected to a guide piston (5). A bending rod (24) connects the upper part of the telescopic housing to the plate of the guide piston. The longitudinal axis of the bending rod runs in the lifting direction of the hydraulic cylinder.

Description

Die Erfindung bezieht sich auf einen Positionsgeber zur Anstellhubwegmessung eines die Lagereinbaustücke der Walzen eines Walzgerüstes beaufschlagenden Hydraulikzylinders, der von einem Führungskolben geführt wird, wobei der Führungskolben verbunden mit einer Platte sich gegen das Walzgerüst abstützt, der Positionsgeber bestehend aus einem Teleskopgehäuse mit einem unteren Gehäuseteil und einem oberen Gehäuseteil, einem Wegaufnehmer und einem dem Wegaufnehmer zugeordneten Messstab, wobei das den Wegaufnehmer aufnehmende untere Gehäuseteil dazu eingerichtet ist, fest mit dem Hydraulikzylinder verbunden zu werden, und das den Messstab aufnehmende obere Gehäuseteil dazu eingerichtet ist, fest mit dem Führungskolben verbunden zu werden.The invention relates to a position sensor for Anstellhubwegmessung of the bearing chocks of the rollers of a rolling mill acted upon hydraulic cylinder, which is guided by a guide piston, wherein the guide piston connected to a plate is supported against the rolling stand, the position sensor consisting of a telescopic housing with a lower housing part and an upper housing part, a displacement sensor and a measuring rod associated with the transducer, wherein the lower housing part receiving the transducer is adapted to be fixedly connected to the hydraulic cylinder, and the upper housing part receiving the measuring rod is adapted to be fixedly connected to the guide piston ,

Ein derartiger Positionsgeber ist beispielsweise in der US - A - 4 194 383 beschrieben. Positionsgeber dieser Art werden in den Walzgerüsten von Walzenstraßen bei der Banddickenregelung zur Einstellung des Walzspaltes zwischen den Walzen des Walzgerüstes verwendet. Da die Walzspalteinstellung hierbei eine hohe Genauigkeit erfordert, werden nur Positionsgeber verwendet, die mit einer hohen Auflösung arbeiten, und das System muss praktisch spielfrei sein, damit keine Ausschussverluste beim Walzen der Bänder entstehen.Such a position sensor is for example in the US Pat. No. 4,194,383 described. Position encoders of this type are used in the roll stands of roller conveyors in the strip thickness control for adjusting the roll gap between the rolls of the roll stand. In this case, since the nip setting requires high accuracy, only position encoders operating at high resolution are used, and the system must be virtually free of backlash, so that there is no loss of scrap in rolling the ribbons.

Bei einer bekannten Ausbildung und Anordnung der Positionsgeber in der Form eines zylindrischen Teleskopgehäuses ist dessen unterer Teil fest mit dem Hydraulikzylinder verbunden, und dessen oberer Teil wird, beaufschlagt durch eine, im unteren Teil angeordnete Feder mit einer, an seiner Stirnseite angeordneten Kugelwölbung gegen ein, an einer am Führungskolben des Hydraulikzylinders befestigten Platte angeordnetes Druckstück gedrückt.In a known design and arrangement of the position sensor in the form of a cylindrical telescopic housing whose lower part is fixedly connected to the hydraulic cylinder, and the upper part is, acted upon by a, arranged in the lower part of the spring with a, arranged on its front side ball against a, pressed on a plate attached to the guide piston of the hydraulic cylinder plate arranged pressure piece.

Der die Lagereinbaustücke der Walzen des Walzgerüstes beaufschlagende Hydraulikzylinder führt während des Walzbetriebes infolge der dabei bewirkten Biegungen der Walzen über ihre Längsachse innerhalb des Spiels in den Ständern des Walzgerüstes leichte Kippbewegungen aus. Diese Kippbewegungen können unter Umständen auf das empfindliche Bewegungssystem von Meßstab und Wegaufnehmer übertragen werden und führen dann ggf. zu Beschädigungen des Meßstabes oder zu Fehlmessungen.The bearing of the rollers of the roll stand acting hydraulic cylinder performs during rolling operation as a result of the thereby caused bends of the rolls over its longitudinal axis within the game in the uprights of the mill slight tilting movements. Under certain circumstances, these tilting movements can be transmitted to the sensitive movement system of the dipstick and the displacement transducer and then possibly lead to damage to the dipstick or to incorrect measurements.

Bei im Walzbetrieb zeitweise auftretenden hohen Beschleunigungen der Anstellbewegungen des Hydraulikzylinders relativ zum Führungskolben kann es auch vorkommen, daß der obere Teil des Teleskopgehäuses von der, am Führungskolben befestigten Platte nach unten abhebt, d.h., daß sich die Kugelwölbung von dem Druckstück wegbewegt und dadurch Verfälschungen der Meßergebnisse des Positionsgebers verursacht. Eine Verstärkung der im unteren Teil des Teleskopgehäuses angeordneten Feder, deren Kraft diesem Abhebevorgang entgegengerichtet ist, könnte die Verfälschungsgefahr zwar verringern aber nicht ganz beseitigen, würde aber eine zusätzliche Vergrößerung der ohnehin durch die Anwendung dieser Feder schweren und voluminösen Konstruktionen des Teleskopgehäuses erfordern.When in rolling operation temporarily occurring high accelerations of Anstellbewegungen of the hydraulic cylinder relative to the guide piston, it may also happen that the upper part of the telescopic housing lifts from the plate attached to the guide piston down, that is, the ball buckle moved away from the pressure piece and thus distortions of Measurement results of the position sensor caused. An increase in the arranged in the lower part of the telescopic housing spring, the force of this lifting operation is contrary, but could reduce the risk of corruption although not completely eliminated, but would require an additional increase in the already by the application of this spring heavy and voluminous constructions of the telescope housing.

Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäßen Positionsgeber so zu verbessern, dass neben einer leichteren Bauweise des Teleskopgehäuses aus den zeitweiligen Beschleunigungen des Hydraulikzylinders keine Verfälschungen der Messergebnisse entstehen können.The invention has for its object to improve the generic position sensor so that in addition to a lighter construction of the telescope housing from the temporary accelerations of the hydraulic cylinder no distortions of the results can occur.

Diese Aufgabe wird gelöst durch einen zwischen dem oberen Gehäuseteil des Teleskopgehäuses und der Platte anbringbaren elastischen Biegestab, dessen Längsachse in Richtung der Hubbewegung des Hydraulikzylinders verläuft, dessen unteres Ende fest mit dem oberen Gehäuseteil des Teleskopgehäuses verbunden ist, und dessen oberes Ende dazu eingerichtet ist, fest mit der Platte verbunden zu werden.This object is achieved by an attachable between the upper housing part of the telescopic housing and the plate elastic bending bar whose longitudinal axis extends in the direction of the lifting movement of the hydraulic cylinder, whose lower end is fixedly connected to the upper housing part of the telescopic housing, and whose upper end is adapted to firmly connected to the plate.

Wie die Erfindung weiter vorsieht, können die beiden Enden des Biegestabes, einerseits auf die ihnen zugewandte Oberseite des oberen Teils des Teleskopgehäuses und andererseits auf den Innenboden eines, auf die Platte am Führungskolben aufgesetzten, mit seiner Topföffnung ebenfalls dem Teleskopgehäuse zugeordneten Topfkörpers aufleg- und lösbar mit diesem verbindbar sein. Die Enden des Biegestabes können dabei auch flanschscheibenförmig erweitert ausgebildet sein.As the invention further provides, the two ends of the bending rod, on the one hand to the facing top of the upper part of the telescopic housing and on the other hand on the inner bottom of a, placed on the plate on the guide piston, with its pot opening also the telescopic housing associated pot body aufleg- and releasable be connectable with this. The ends of the bending rod can also be formed flanschscheibenförmig extended.

Da bei dieser erfindungsgemäßen Ausbildungsform eines Positionsgebers der den Meßstab aufnehmende, obere Teil des Teleskopgehäuses über den elastischen Biegestab mit dem Träger des Führungskolbens fest verbunden ist, kann dieser obere Teil auch bei großen Beschleunigungen des Hydraulikzylinders nicht von dem Träger des Führungskolbens abheben und Kippbewegungen des Hydraulikzylinders, z.B. verursacht durch die Walzenbiegungen während des Walzbetriebes, die aufgrund der festen Verbindung des unteren Gehäuseteils mit dem Hydraulikzylinder auf das Teleskopgehäuse übertragen werden, führen lediglich zu einer Ausbiegung des Biegestabes im elastischen Bereich, ohne daß dabei Verfälschungen der Meßergebnisse auftreten können. Gleichzeitig wird die Bauweise des Teleskopgehäuses durch den Wegfall der Feder vereinfacht und fällt weniger schwer aus.Since in this embodiment according to the invention of a position sensor of the dipstick receiving, upper part of the telescopic housing is fixedly connected via the elastic bending rod to the support of the guide piston, this upper part can not stand out even at high accelerations of the hydraulic cylinder from the support of the guide piston and tilting movements of the hydraulic cylinder , eg caused by the roll bends during rolling operation, which are transmitted due to the firm connection of the lower housing part with the hydraulic cylinder on the telescopic housing, only lead to a deflection of the bending bar in the elastic range, without causing falsifications of the results can occur. At the same time, the design of the telescopic housing is simplified by the elimination of the spring and is less difficult.

Die Erfindung wird anhand der in der Zeichnung dargestellten Ausführungsbeispiele näher erläutert. In der Zeichnung zeigen

Figur 1
einen in ein Walzgerüst eingebauten Positionsgeber bekannter Ausbildung im Axialschnitt und
Figur 2
den ebenfalls eingebauten Positionsgeber nach der Erfindung, im Axialschnitt.
The invention will be explained in more detail with reference to the embodiments illustrated in the drawings. In the drawing show
FIG. 1
an installed in a rolling mill position sensor known training in axial section and
FIG. 2
the also built-in position sensor according to the invention, in axial section.

Wie aus Fig. 1 zu ersehen, besteht der Positionsgeber aus einem Teleskopgehäuse, das sich aus einem rohrförmigen unteren Gehäuseteil 1 und einem, in diesem axial geführten oberen Gehäuseteil 2 zusammensetzt. Der untere Gehäuseteil 2 ist mittels einer Klemm-Spannvorrichtung 3 fest mit dem Hydraulikzylinder 4 verbunden, der vertikal auf- und abbeweglich von einem Führungskolben 5 geführt wird, der verbunden mit einer Platte 6 sich gegen das, nicht dargestellte, Walzgerüst abstützt. Der obere Gehäuseteil 2 trägt unterhalb seiner Stirnseite eine zentrale Einspannvorrichtung 7 für den Meßstab 8, der zentralaxial in den, von einer Zylinderhülse 9 getragenen elektronischen Wegaufnehmer 10 eintaucht. Der obere Gehäuseteil 2 sitzt mit einem äußeren Ringflansch 2a auf einer Zylinderfeder 11 auf, die gegen ein Bodenstück 1a des unteren Gehäuseteils 1 abgestützt ist. Die von diesem Bodenstück 1a zu dem Wegaufnehmer geführte Verbindungsleitung ist mit 12 bezeichnet. Die, nach oben weisende Stirnseite des oberen Gehäuseteils 2 des Teleskopgehäuses trägt eine Kugelwölbung 13, die ein Druckstück 14 beaufschlagt, das an der Unterwand der Platte 6 befestigt ist. Den oberen Gehäuseteil 2 und den unteren Gehäuseteil 1 umschließt ein flexibles Harmonika-Schutzrohr 15, das einerseits am Umfang des unteren Gehäuseteils 1 und andererseits an dem Druckstück 14 befestigt ist. Der obere Gehäuseteil 2 wird durch Beaufschlagung seines Ringflansches 2a durch die Zylinderfeder 11 in Richtung nach oben gegen die Platte 6 gedrückt und stößt damit mit der Kugelwölbung 13 in das Druckstück 14.How out Fig. 1 can be seen, the position sensor consists of a telescopic housing, which is composed of a tubular lower housing part 1 and a, in this axially guided upper housing part 2. The lower housing part 2 is connected by means of a clamping jig 3 fixed to the hydraulic cylinder 4, which is guided vertically movable up and down by a guide piston 5, which is connected to a plate 6 against the, not shown, rolling mill. The upper housing part 2 carries below its front side a central clamping device 7 for the measuring rod 8, the axial axial immersed in the, carried by a cylinder sleeve 9 electronic transducer 10. The upper housing part 2 is seated with an outer annular flange 2a on a cylinder spring 11, which is supported against a bottom piece 1a of the lower housing part 1. The guided from this bottom piece 1a to the transducer connecting line is designated 12. The, upwardly facing end face of the upper housing part 2 of the telescopic housing carries a ball camber 13 which acts on a pressure piece 14 which is fixed to the lower wall of the plate 6. The upper housing part 2 and the lower housing part 1 encloses a flexible harmonica protection tube 15 which is attached on the one hand to the circumference of the lower housing part 1 and on the other hand to the pressure piece 14. The upper housing part 2 is pressed by acting on its annular flange 2 a by the cylinder spring 11 in the upward direction against the plate 6 and thus abuts with the ball buckle 13 in the pressure piece 14th

Der untere Gehäuseteil 1 des Teleskopgehäuses folgt den Anstellbewegungen des Hydraulikzylinders 4 in Richtung des dargestellten Doppelpfeils S, da er fest mit diesem verbunden ist. Dabei bleibt die Andruckverbindung des oberen Gehäuseteils 2 mit der Platte 6 über die Kugelwölbung 13 und das Druckstück 14 bestehen, weil der obere Gehäuseteil 2 unter dem Druck der Zylinderfeder 11 steht. Nur bei einer sehr schnell beschleunigten Bewegung des Hydraulikzylinders 4 nach unten kann sich die Andruckverbindung zwischen Kugelwölbung 13 und Druckstück 14 lösen, wenn der Druck der Zylinderfeder 11 nicht ausreicht, diese Andruckverbindung aufrechtzuerhalten. In diesem Fall entspricht die Position des Meßstabes 8 im Wegaufnehmer 10 nicht mehr der tatsächlichen Position des Führungskolbens 5 mit der Folge, daß unrichtige Meßergebnisse weitergeleitet werden.The lower housing part 1 of the telescopic housing follows the adjusting movements of the hydraulic cylinder 4 in the direction of the double arrow S shown, since it is firmly connected thereto. In this case, the pressure connection of the upper housing part 2 with the plate 6 on the ball buckle 13 and the pressure member 14 is made, because the upper housing part 2 is under the pressure of the cylinder spring 11. Only at a very fast accelerated movement of the hydraulic cylinder 4 down the pressure connection between the ball buckling 13 and thrust piece 14 can solve if the pressure of the cylinder spring 11 is not sufficient, this Andruckverbindung maintain. In this case, the position of the measuring rod 8 in the displacement transducer 10 no longer corresponds to the actual position of the guide piston 5, with the result that incorrect measurement results are forwarded.

Die Ausbildung nach Fig. 2 entspricht der nach Fig. 1 mit Bezug auf die feste Verbindung des unteren Gehäuseteils 21 des Teleskopgehäuses mit dem Hydraulikzylinder 4 und der Führung des oberen Gehäuseteils 22 in diesem Teleskopgehäuse mit der Maßgabe, daß wegen des Wegfalls der dort verwendeten Zylinderfeder 11 nur die, der Zylinderhülse 9 entsprechende Zylinderhülse 29, die auch hier den Wegaufnehmer 20 erfaßt und trägt, als Führungselement für den, sie umfassenden und auf ihr gleitenden oberen Gehäuseteil 22 dient, mit der Folge, daß weniger und leichtere Bauteile verwendet werden können. Anstelle der Kugelwölbung-Druckstück-Verbindung 13, 14 bei der Ausbildung nach Fig. 1 ist auf die Platte 6 ein Topfkörper 23, mit seiner Topföffnung nach unten gerichtet, über eine Ausnehmung 6a im Träger 6 aufgesetzt und befestigt. Ein an beiden Enden 24a, 24b flanschscheibenförmig erweiterter elastischer Biegestab 24 ist mit diesen Enden einerseits am Innenboden des Topfkörpers 23 und andererseits an der äußeren Stirnfläche des oberen Gehäuseteils 22 befestigt. Der untere Gehäuseteil 21 und ein unterer Abschnitt des oberen Gehäuseteils 22 werden von dem Harmonika-Schutzrohr 25 umschlossen, und der, in die zentrale Einspannvorrichtung 27 eingesetzte Meßstab 28 taucht in den Wegaufnehmer 20 ein.The training after Fig. 2 corresponds to the Fig. 1 with respect to the fixed connection of the lower housing part 21 of the telescopic housing with the hydraulic cylinder 4 and the guide of the upper housing part 22 in this telescopic housing with the proviso that because of the omission of the cylinder spring 11 used there only, the cylinder sleeve 9 corresponding cylinder sleeve 29, the here also detects the transducer 20 and carries, as a guide element for the comprehensive and it slides on their upper housing part 22, with the result that less and lighter components can be used. Instead of the ball buckling pressure piece connection 13, 14 in the training after Fig. 1 is on the plate 6, a pot body 23, directed with its pot opening down, placed and secured via a recess 6a in the carrier 6. An elastic bending rod 24, which is flanged at both ends 24a, 24b, is fastened with these ends on the one hand to the inner bottom of the pot body 23 and on the other hand to the outer end surface of the upper housing part 22. The lower housing part 21 and a lower portion of the upper housing part 22 are enclosed by the harmonica protective tube 25, and the, inserted into the central jig 27 dipstick 28 is immersed in the transducer 20 a.

Wie ersichtlich, besteht bei dieser Ausbildungsform des Positionsgebers eine feste Verbindung zwischen dem oberen Gehäuseteil 22 des Teleskopgehäuses, das den Meßstab 28 trägt und der Platte 6 mit der Folge, daß auch bei einer beschleunigten Anstellbewegung des Hydraulikzylinders 4 in Richtung des Doppelpfeils S nach unten kein Abriß dieser Verbindung erfolgen kann. Kippbewegungen des Hydraulikzylinders 4, z.B. verursacht durch die Walzenbiegungen während des Walzbetriebes, die aufgrund der festen Verbindung des unteren Gehäuseteils 21 mit dem Hydraulikzylinder 4 auf das ganze Teleskopgehäuse übertragen werden, führen lediglich zu einer Ausbiegung des Biegestabes 24 im elastischen Bereich, ohne daß dabei Verfälschungen der Meßergebnisse auftreten können.As can be seen, there is in this embodiment of the position encoder fixed connection between the upper housing part 22 of the telescope housing, which carries the dipstick 28 and the plate 6, with the result that even with an accelerated adjusting movement of the hydraulic cylinder 4 in the direction of the double arrow S down no Breakdown of this connection can be done. Tilting movements of the hydraulic cylinder 4, for example, caused by the roll bends during the rolling operation, due to the fixed connection of the lower housing part 21 are transmitted to the hydraulic cylinder 4 to the entire telescope housing, only lead to a deflection of the bending rod 24 in the elastic range, without causing falsifications of the results can occur.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
unterer Gehäuseteillower housing part
1a1a
Bodenstückbreech
22
oberer GehäuseteilUpper housing part
2a2a
Ringflanschannular flange
33
Klemm-Spann-VorrichtungClamping TENSION DEVICE
44
Hydraulikzylinderhydraulic cylinders
55
Führungskolbenguide piston
66
Platteplate
6a6a
Ausnehmungrecess
77
(zentrale) Einspannvorrichtung(central) clamping device
88th
Meßstabdipstick
99
Zylinderhülsecylinder sleeve
1010
Wegaufnehmertransducer
1111
Zylinderfedercylinder spring
1212
Verbindungsleitungconnecting line
1313
Kugelwölbungball Hanger
1414
DruckstückPressure piece
1515
Harmonika-SchutzrohrHarmonica thermowell
2020
Wegaufnehmertransducer
2121
unterer Gehäuseteillower housing part
2222
oberer GehäuseteilUpper housing part
2323
Topfkörperpot body
2424
Biegestabbending Beam
24a24a
Flanschansatzflanged
24b24b
Flanschansatzflanged
2525
Harmonika-Schutzrohr
26Harmonica thermowell
26
2727
(zentrale) Einspannvorrichtung(central) clamping device
2828
Meßstabdipstick
2929
Zylinderhülsecylinder sleeve
ss
(Doppelpfeil)(Double arrow)

Claims (3)

  1. Position transmitter for adjustment stroke travel measurement of a hydraulic cylinder (4) which acts on the bearing chocks of the rolls of a roll stand and which is guided by a guide piston (5), wherein the guide piston, connected with a plate (6), is supported relative to the roll stand, the position transmitter consisting of
    - a telescopic housing with a lower housing part (21) and an upper housing part (22),
    - a travel sensor (20) and
    - a measuring rod (28) associated with the travel sensor (20), wherein
    - the lower housing part (21) receiving the travel sensor (20) is equipped for the purpose of being fixedly connected with the hydraulic cylinder (4) and
    - the upper housing part (22) receiving the measuring rod is equipped for the purpose of being fixedly connected with the guide piston (5)
    characterised by
    - a resilient bending board (24), the longitudinal axis of which extends in the direction of the stroke movement of the hydraulic cylinder (4), mountable between the upper housing part (22) of the telescopic housing and the plate (6), the lower end (24b) of the bending rod being fixedly connected with the upper housing part (22) of the telescopic housing and the upper end (24a) of the bending rod being equipped for the purpose of being fixedly connected with the plate (6).
  2. Position transmitter according to claim 1, characterised in that the position transmitter comprises a pot piston (23), which by its pot opening faces the telescopic housing, the upper end (24a) of the resilient bending rod (24) is connected with the base of the pot piston (23) and the pot piston (23) is equipped for the purpose of being connected, with its pot opening facing a recess (6a) in the plate (6) and placed thereon, with the plate.
  3. Position transmitter according to claim 2, characterised in that the upper and lower ends (24a, 24b) of the resilient being rod (24) are constructed to be enlarged in the form of a flange disc.
EP99121755A 1998-11-09 1999-11-03 Position indicator for measuring the setting stroke way of the roll of a rolling frame Expired - Lifetime EP1001247B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19851480A DE19851480B4 (en) 1998-11-09 1998-11-09 Position sensor for Anstellhubwegmessung the rolls of a rolling stand
DE19851480 1998-11-09

Publications (3)

Publication Number Publication Date
EP1001247A2 EP1001247A2 (en) 2000-05-17
EP1001247A3 EP1001247A3 (en) 2001-11-21
EP1001247B1 true EP1001247B1 (en) 2009-01-21

Family

ID=7887091

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99121755A Expired - Lifetime EP1001247B1 (en) 1998-11-09 1999-11-03 Position indicator for measuring the setting stroke way of the roll of a rolling frame

Country Status (6)

Country Link
US (1) US6173596B1 (en)
EP (1) EP1001247B1 (en)
JP (1) JP4377010B2 (en)
AT (1) ATE421677T1 (en)
DE (2) DE19851480B4 (en)
ES (1) ES2318881T3 (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10130969A1 (en) * 2001-06-27 2003-01-16 Sms Demag Ag bridle
DE10202526B4 (en) 2001-12-12 2022-02-03 Sms Group Gmbh Device for measuring the roll gap between work rolls of a cold or hot rolling stand
KR100460264B1 (en) * 2002-07-04 2004-12-08 한국타이어 주식회사 Roll Gap Control Apparatus of Mixing Mill for Tire Manufacture
DE102007048686A1 (en) 2007-10-10 2009-04-16 Sms Demag Ag Position sensor for Anstellhubwegmessung a piston-cylinder system
DE102008004540B4 (en) * 2008-01-15 2014-12-11 Sms Siemag Aktiengesellschaft Arrangement for roll gap control
DE102008037756A1 (en) 2008-08-14 2010-02-18 Sms Siemag Aktiengesellschaft Position sensor for measuring engaging stroke length of hydraulic piston-cylinder system, has telescope housing including inner space in which distance measuring system is arranged, where sensor is formed as gas pressure spring/gas spring
EP3150293A1 (en) 2015-09-30 2017-04-05 Primetals Technologies Austria GmbH Assembly for determining the longitudinal displacement of a hydraulic cylinder
EP3150292A1 (en) * 2015-10-02 2017-04-05 Primetals Technologies Austria GmbH Positioning device
WO2020093220A1 (en) * 2018-11-06 2020-05-14 深圳创怡兴实业有限公司 Burr detecting device and method
AT523054B1 (en) 2020-01-16 2021-05-15 Horst Leopold Ing Magnetostrictive position measuring device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1354680A (en) * 1970-10-02 1974-06-05 Wean United Inc Rolling mills
US4194383A (en) * 1978-06-22 1980-03-25 Gulf & Western Manufacturing Company Modular transducer assembly for rolling mill roll adjustment mechanism
JPS57103723A (en) * 1980-12-19 1982-06-28 Kawasaki Steel Corp Controlling method and measuring device for gap between upper and lower work roll chock of rolling mill
DE3212525A1 (en) * 1982-04-03 1983-11-24 Mannesmann AG, 4000 Düsseldorf ROLL GAP CONTROL AND ADJUSTMENT DEVICE FOR PARTICULARLY VERTICAL DEVICES
CH659595A5 (en) * 1983-06-10 1987-02-13 Guenther Alich Roll-gap measuring device with a calibrating appliance
DE3420501A1 (en) * 1984-06-01 1985-12-05 Mannesmann AG, 4000 Düsseldorf ROLLER CONTROL INDICATOR
JPS61199506A (en) * 1985-02-28 1986-09-04 Ishikawajima Harima Heavy Ind Co Ltd Rolling mill
JPS6453710A (en) * 1987-08-21 1989-03-01 Hitachi Ltd Screw up device for rolling mill
DE8816758U1 (en) * 1988-02-11 1990-06-21 Lipinski, Reinhard, 7310 Plochingen, De
FR2645051A1 (en) * 1989-03-28 1990-10-05 Clecim Sa DEVICE FOR DETERMINING THE POSITION OF CYLINDERS OF A ROLLING MILL
US5970599A (en) * 1997-07-14 1999-10-26 The Olofsson Corporation Milling machine

Also Published As

Publication number Publication date
DE19851480A1 (en) 2000-05-11
EP1001247A2 (en) 2000-05-17
ES2318881T3 (en) 2009-05-01
JP4377010B2 (en) 2009-12-02
DE19851480B4 (en) 2007-09-13
JP2000140914A (en) 2000-05-23
ATE421677T1 (en) 2009-02-15
EP1001247A3 (en) 2001-11-21
US6173596B1 (en) 2001-01-16
DE59914952D1 (en) 2009-03-12

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