EP1497048B1 - Medium-supply coupling for rolling frames - Google Patents

Abstract

The invention relates to a medium-supply coupling comprising coupling elements for coupling and/or uncoupling the medium-supply lines that are located on a rolling frame (20) to and from medium-supply connections of chocks (21) that are driven in rolling frames, in particular for working or back-up rolls. To automate the coupling and uncoupling process, the coupling elements of the medium-supply and drainage lines on the rolling frame (20) are configured so that they can be automatically coupled to and uncoupled from the medium-supply connections of the chocks (21).

Description

The invention relates to a media coupling, comprising coupling elements for coupling and / or uncoupling of arranged on a rolling mill media feeds with media connections of roll stands feasible chocks of roller bearings, especially for working or support rollers, according to the preamble of claim 1. Such a media coupling is known from JP-A-61014008 is known.

The coupling and uncoupling of the media supply lines is particularly associated with the oil flood storage of rolling stands with difficulties because the coupling connections of the bearing chocks are also on the hard to reach drive side of the rolling stands.
Nevertheless, to safely handle the coupling elements, in particular the relatively large coupling elements of the oil drain lines, great experience of the operator is required. Due to the height of the upper chocks of support rollers, the operating personnel is considerably at risk. But even the internal hose stresses mean that the manual coupling and uncoupling of the media on rolling stands results in a difficult and risky work for the operating staff.

The document EP 0 947 255 A2 discloses a device for coupling and uncoupling the media feed lines on the bearing inserts of rolls guided in roll stands. The coupling elements of the media supply lines used in this case are facing the media connections in the bearing chocks and arranged together in a carrier. This support is guided parallel to the Anstellbewegungsrichtung the bearing chocks in a guide frame. The guide frame is held in associated with the roll stand guides in Walzenachsrichtung against the bearing chock, and slidably held away from it. As a result, the coupling and uncoupling of the media feed line is semi-automatic feasible.

Based on this prior art, the object of the present invention is to provide a device for the automatic coupling of all four chocks of a work roll set or support roll set with all necessary supply and disposal media.

The object is achieved in an inventive manner in all four chocks of the back-up rolls or the work rolls with a media coupling, comprising coupling elements for coupling and / or uncoupling of arranged on a rolling mill media feeds with media connections of roll stands in manageable chocks of roller bearings, by the media coupling according to claim 1 solved. The automatically made media coupling causes a media coupling, which is completely free from the stationary roll stand and only firmly connected to the roll chock and therefore can join in its movements. The disadvantages of all previously known media coupling systems, which do not provide complete decoupling of roll stand and roll chock, are avoided with the coupling system according to the invention. There can be no overdetermined system with the risk of coercive forces, as is the case with the known clutch systems.

The dependent claims are shown in advantageous embodiments of the media coupling according to the invention.

With the inventive design of the media coupling is achieved with great advantage that the feasible on a roll chock in the vertical direction block can be coupled with an attachable to the roll stand clutch counterpart, which has a removable plate with an actuator in particular in the form of a hydraulic cylinder - And pushes back to the coupling process cooperates.

Further details, features and advantages of the invention will become apparent from the following explanations of an embodiment schematically illustrated in the drawings for the media coupling.

Fig. 1

in Seitenansicht und teils im Schnitt die Medienkupplung mit Verschlusskolben in entriegeltem Zustand an einem Walzgerüst.

Fig. 2

in Seitenansicht und teils im Schnitt die entriegelte Medienkupplung mit Verschlussklappe an einem Walzgerüst.

Fig. 3

teilweise im Schnitt und teilweise in Seitenansicht die Medienkupplung mit dem Übergabe-Kupplungselement in gekoppeltem Zustand.

Fig. 4

ebenfalls in gekoppeltem Zustand die Haupt-Ölrücklaufleitung sowie weitere Medienanschlüsse für Ölvorlauf, Hydrostatik, Hydraulik oder dergleichen.

Fig. 5

einen im Ölzulauf angeordneten Antrieb für eine im Ölrücklauf angeordnete Flügelradpumpe.

Show it:

Fig. 1

in side view and partly in section, the media coupling with locking piston in the unlocked state on a rolling stand.

Fig. 2

in side view and partly in section the unlocked media coupling with flap on a rolling stand.

Fig. 3

partly in section and partly in side view, the media coupling with the transfer coupling element in the coupled state.

Fig. 4

also in the coupled state, the main oil return line and other media connections for oil supply, hydrostatics, hydraulics or the like.

Fig. 5

a arranged in the oil inlet drive for an arranged in the oil return impeller.

According to FIG. 1 or FIG. 2, the media coupling comprises coupling elements for coupling and / or decoupling the media supply lines with media connections 24 (FIG. 4) fixed to a roll stand 20 by chocks 21 of roller bearings which can be guided in roller stands, in particular for working or support rollers , The coupling elements of the media supply and discharge lines 1 to 4 on the roll stand 20 are automatically coupled to each other with media connections 5 of the roll chocks 21 and decoupled formed.

In order to make the corresponding coupling processes automatable, the media connections of the chocks 21 for the uncoupling state are equipped with automatic means for oil-tight closing.

For this purpose, these means may be in the form of a respective spring-actuated piston 12, as shown in the figure 1 within the building block 5 in section.
All four chocks 21 of backup rollers and the work rolls are each provided with an automatic oil return flap 17 or piston 12, provided only for unpressurized large oil return, all other heats are with standard quick-release couplings 24 for oil flow, for hydrostatics, the Hydraulics, provided the grease lubrication, pneumatics or the like.

The coupling is advantageously designed for the passage of relatively large amounts of pressureless oil with low return resistance. Suitably, the spring-actuated flap 17 or the spring / pressure oil-actuated piston 12 has a sealing cone 18, which may be closed against a radial shaft sealing ring 19.

The feasible in the roll chock 21 in Fig. 1 in the vertical direction Baustückblock 5 can be coupled with a can be arranged on the roll stand 20 clutch counterpart 22 which has a removable plate 4, the back with an actuator in the form of a hydraulic cylinder 1 and pushed back to Coupling process cooperates.

The replacement plate 4 is designed and arranged for the coupling process with guide holes 31 so that it is pushed down by the bolt 3 of the cylinder 1, in which case the other pin 3 '(FIG. 4) of the removable plate 4 in centering holes 11 of the building block. 5 beak and center yourself at the same time. The removable disk 4 is guided safely, docked to the building block 5 and finally clamped with the mandrel or clamping element 30 on the building block 5 and thus on the movable roll chock 21. (Fig. 3)
To perform this tension of the mandrel, which is provided, for example. With a rotatable hammer head connection, set by means of hydraulic oil pressure under pressure and clamped.

At the roll chock 21 of the building block 5 is fastened screwed and provided with a spring returnable the oil return port 6 return flap 17 or piston 12.

The removable plate 4 is equipped with centering pins 3 'and the plate 29 on the roll chock 21 with corresponding centering holes 11, in which the centering pins 3' engage during the coupling process. (Fig. 4)

The media coupling shown in Figures 1 to 4 may have further coupling transfer elements 24 for media such as water, compressed air, lubricant, etc.

After the coupling process, the removable plate 4 with a known clamping element 30 (Fig. 3) on the building block 5 is clamped. The automatically couplable media couplings for the roll chocks 21 with coupling counterparts 22 may be formed with means for locking the chocks 21 with the roll stand 20.

The coupled or uncoupled position of the media coupling are preferably monitored by electrical signal transmission, and the signals are incorporated into the process automation.

In order to reduce the return cross sections, a return support is provided, which, integrated in the automatic process control is equipped with a jet or impeller pump 28. This can either have an acted upon by leading oil 25 or an alimentable with electrical energy drive 27 as shown schematically in Fig. 5.

1. 1. Beim Arbeitsschritt 1 ist gem. Fig. 1 die Wechselplatte 4 in einer Wartestellung von den Bolzen 3 gehalten. Dabei steht der Zylinder 1 in der zurückgezogenen Stellung. Die Walzeneinbaustücke 21 können gewechselt werden. Im Baustückblock 5 ist die Ölrücklauföffnung 6 mit einem Ventilkegel 7 der Wechselplatte 4 gemäß Darstellung in Fig. 3 geschlossen, und die übrigen Übergabestellen für weitere Medien sind ebenfalls durch entsprechende standardisierte Kupplungskonstruktionen geschlossen, vgl. Fig. 4, Pos. 24.
2. 2. Im nächsten Schritt, wenn das Walzeneinbaustück 21 gewechselt ist und sich in der definierten Wechselposition in der obersten Stellung befindet, kann der automatische Ankupplungsvorgang der Wechselplatte 4 an den Baustückblock 5 erfolgen:
   • Dazu wird Zylinder 1 ausgefahren. Die Wechselplatte 4 wird von den Bolzen 3 heruntergeschoben und mittels Zentrierbolzen 3' auf die Zentrierbohrungen 11 übergeben, (Fig. 4) wodurch sich die Kupplungsteile exakt miteinander selbst zentrieren. Die Wechselplatte 4 wird anschließend mit dem Spanndorn 30 am Baustückblock 5 festgespannt. (Fig. 3)
3. 3. In einem weiteren Schritt, wenn das Walzeneinbaustück 21 nach unten gefahren wird, beispielsweise zur Einstellung des Walzspaltes, wird der Eingriffspilz 13 des Zylinders 1 von der Aufnahmeöffnung 14 der Wechselplatte 4 freigesetzt. Die automatische Medienkupplung ist nun vollkommen frei vom Gerüstständer und fest mit dem Walzeneinbaustück 21 verbunden und kann alle Bewegungen des Walzeneinbaustückes 21 mitmachen, weil sie lediglich nur noch mit flexiblen Schläuchen mit dem Walzenständer in Verbindung steht.

It will be explained below that the automatically acting media coupling has all the degrees of freedom that are caused by movements of the building block 5 in the roll stand. The coupling process is carried out with the following steps:

1. 1. At step 1 gem. Fig. 1, the removable disk 4 held in a waiting position by the bolt 3. In this case, the cylinder 1 is in the retracted position. The roll chocks 21 can be changed. In the building block 5, the oil return port 6 is closed with a poppet 7 of the removable disk 4 as shown in Fig. 3, and the other transfer points for other media are also closed by corresponding standardized coupling constructions, see. Fig. 4, Pos. 24.
2. 2. In the next step, when the roll chock 21 is changed and is in the defined change position in the uppermost position, the automatic Ankupplungsvorgang the removable plate 4 can be made to the building block 5:
   • For this purpose, cylinder 1 is extended. The removable plate 4 is pushed down by the bolts 3 and transferred by means of centering pins 3 'on the centering holes 11, (Fig. 4) whereby the coupling parts center themselves exactly with each other. The removable plate 4 is then tightened with the mandrel 30 on the building block 5. (Fig. 3)
3. 3. In a further step, when the roll chock 21 is driven down, for example, to adjust the roll gap, the engagement of the cylinder 13 of the cylinder 1 is released from the receiving opening 14 of the removable plate 4. The automatic media coupling is now completely free from the framework stand and firmly connected to the roll chock 21 and can join in all the movements of the roll chock 21, because it is only in connection with flexible hoses with the roll stand.

LIST OF REFERENCE NUMBERS

1.

cylinder

Second

plate

Third

bolt

4th

Removable

5th

structural member block

6th

Oil return orifice

7th

Handover coupling element

8th.

dito

9th

dito

10th

dito

11th

centering

12th

closure piston

13th

intervention mushroom

14th

Receiving bore

15th

piston rod

16th

Oil return pipe

17th

spring-operated flap

18th

sealing cone

19th

Radial shaft seal

20th

roll housing

21st

Roll chock

22nd

Clutch counterpart

23rd

Hydraulic connection

24th

Media Connections

25th

Oil inlet

26th

Oil Return

27th

drive

28th

Vane

30th

Clamping element / mandrel

31st

guide bores

Claims (6)

1. A media couple, including coupling elements for coupling and/or uncoupling the media feed lines located on a roll stand (20) with media connectors of installation members (21) of roll bearings that are displaceable in roll housings, particularly for back-up and working rolls, wherein the coupling elements of the feed and drain lines on the roll stand (20) are constructed so as to be able to be coupled with and uncoupled from media connections for installation members (21) in such manner that a media couple is created that is free of the roll housing and fixed on the roll installation member (21),
   characterized in that
   the structural member block (5) that is movable vertically in an installation member (21) can be coupled with a coupling mating part (22) that can be disposed on the roll stand (20), which mating part has a changing plate (4) that cooperates with an actuating element particularly in the form of a hydraulic cylinder (1) so as to be movable forwards and backwards for the coupling operation.
2. The media couple as recited in claim 1,
   characterized in that
   the free end of the piston rod of the cylinder (1) has an engaging lug (13) that cooperates in coupling manner with the receiving opening (14) in the changing plate (4), and which releases the changing plate when the structural member block (5) is moved backwards.
3. The media couple as recited in either of claims 1 or 2,
   characterized in that
   the structural member block (5) is fixed with a threaded connection to the roll installation member (21) and is furnished with a spring-operable return flow valve (17) or throttle piston (12) for closing the oil return aperture (6).
4. The media couple as recited in one or more of claims 1 to 3,
   characterized in that
   the changing plate (4) is fumished with guide holes (31) and bolts (3) and with centring bolt (3'), and the structural member block (5) is furnished with corresponding centring holes (11), which are engageable with each other in the coupling operation, and that the two coupling members (5, 22) are constructed so as to be able to be centred with each other.
5. The media couple as recited in one or more of claims 1 to 4,
   characterized in that
   it has other coupling transfer elements (24) for various media connections such as water, compressed air, lubricant, etc..
6. The media couple as recited in one or more of claims 1 to 5,
   characterized in that
   after the coupling operation is complete the changing plate (4) may be firmly clamped with a clamping mandrel on the structural member block (5), e.g. via a clamping element (30) that is known per se, particularly with rotatable hammer head.

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