EP3038772A1

EP3038772A1 - Ladle slide cylinder adapted for automated mounting

Info

Publication number: EP3038772A1
Application number: EP14747887.9A
Authority: EP
Inventors: Simon Pfeil; Roger Scheidegger
Original assignee: Primetals Technologies Austria GmbH
Current assignee: Primetals Technologies Austria GmbH
Priority date: 2013-08-27
Filing date: 2014-07-29
Publication date: 2016-07-06
Anticipated expiration: 2034-07-29
Also published as: AT514848B1; EP3038772B1; WO2015028230A1; AT514848A1

Abstract

A ladle slide (4) of a casting vessel (2) has a receptacle (11) that is delimited by two delimiting surfaces (12, 13). A flange-like fastening device (14) of a hydraulic cylinder unit (8) can be inserted into the receptacle (11). The hydraulic cylinder unit (8) has a cylinder (9) and a piston (10), which is displaceable by means of the cylinder (9) in a working direction (x). The flange-like fastening device (14) is arranged on the cylinder (9) and extends transversely in relation to the working direction (x). Also arranged on the cylinder (9) is an arresting device (15), the effective thickness (d) of which, seen in the working direction (x), is variable between a first thickness (d1) and a second thickness (d2). Seen in the working direction (x), a clear width (a) of the receptacle (11) is greater than a thickness (D) of the flange-like fastening device (14). With the first thickness (d1) of the arresting device (15), the flange-like fastening device (14) can be inserted into the receptacle (11) with play. Then, the effective thickness (d) of the arresting device (15) is changed over to the second thickness (d2) and the cylinder (9) is thereby arrested on the ladle slide (4).

Description

description

The invention relates to a hydraulic cylinder unit for a ladle slide of a ladle,

wherein the hydraulic cylinder unit has a cylinder and a piston displaceable in one working direction by means of the cylinder,

- Wherein a flange-like fastening device is arranged on the cylinder, which extends transversely to the working direction.

The present invention further relates to a ladle slide of a casting vessel,

- wherein the pan slider has a limited by two interfaces recording,

- Wherein a flange-like fastening device of a hydraulic cylinder unit is introduced into the receptacle. For pouring liquid metal - for example steel - casting vessels are usually used, which have on their underside an opening mechanism. Often, so-called pan valves are used for this purpose. A pan pusher is a device that can be attached to the bottom of the pouring vessel and has two plates. The two plates each have a passage opening and are mutually displaceable. By appropriate displacement of the plates against each other, the two

Passages are made to coincide with each other. In this position, the pan slider is open, so that the liquid metal can escape from the casting vessel. If, starting from this open position, one of the plates is displaced against the other plate or both plates, starting from this open position, shifted against each other, thereby the pan slide can be closed.

The displacement of the plates against each other is usually carried out by means of a hydraulic cylinder unit, in the art as Pan slide cylinder called. The pan slider has a limited by two interfaces recording (so-called drive lantern). In this recording, the flange-like fastening device of the cylinder of the hydraulic cylinder unit is used. As a result, the pan slide cylinder - more precisely: the cylinder of the hydraulic cylinder unit - connected to the pan slider. Then, the piston of the hydraulic cylinder unit is extended. On its front side, the piston has a coupling device, which automatically couples with the extension of the piston with an actuator for the pan cylinder, so that the actuator follows both the extension of the piston and the retraction of the piston of the movement of the piston. From the coupling of the pan slider is thus ready for use. The ladle and / or the pouring vessel in general can now be hydraulically opened and closed as required.

In the prior art, the insertion of the flange-like fastening device in the drive lantern is done manually by the operating staff of the caster. The flange-like fastening device can thereby be inserted without play or almost free of play in the drive lantern of the pan slide and then secured by means of a hand bolt against falling out. Due to the freedom from play, the opening position of the pan slide and thus the flow of liquid metal through the opening of the pan slider can be controlled exactly. However, an automated production of the connection of the pan slide cylinder with the pan slide is not possible with the pan slide and the pan slide cylinder of the prior art.

EP 1 671 722 A1 discloses a hydraulic cylinder unit for a ladle slide of a casting vessel, wherein the hydraulic cylinder unit has a cylinder and a piston displaceable in one working direction by means of the cylinder. The detailed design of the hydraulic cylinder unit can not be found in EP 1 671 722 A1. From EP 1 671 722 A1, a ladle slide of a pouring vessel is also known, which is actuated by means of such a hydraulic cylinder unit.

From WO 2005/042 190 AI a hydraulic cylinder unit for a pan slider of a casting vessel is known, wherein the

Hydraulic cylinder unit comprises a cylinder and a displaceable by means of the cylinder in a working direction piston. From WO 2005/042 190 AI a ladle slider of a casting vessel is also known, which is actuated by means of such a hydraulic cylinder unit.

WO 2009/010153 A1 discloses a hydraulic cylinder unit for a ladle slide of a casting vessel, wherein the hydraulic cylinder unit has a cylinder and a piston displaceable in one working direction by means of the cylinder. From WO 2009/010 153 Al a ladle slider of a casting vessel is also known, wherein the pan slider has a limited by two interfaces recording. From EP 0 875 320 A2 a hydraulic cylinder unit for a ladle slide of a casting vessel is known, wherein the hydraulic cylinder unit has a cylinder and a piston displaceable by the cylinder in a working direction, wherein a flange-like fastening device is arranged on the cylinder, which is transverse to the working direction extends. EP 0 875 320 A2 furthermore discloses a ladle slide of a pouring vessel, wherein the ladle slide has a receptacle delimited by two interfaces, a flange-like fastening device of a hydraulic cylinder unit being introduced into the receptacle.

The object of the present invention is to provide possibilities for automatically establishing the connection of the slide valve cylinder with the slide valve.

The object is achieved by a hydraulic cylinder unit with the features of claim 1. Advantageous embodiments The hydraulic cylinder unit according to the invention are the subject of the dependent claims 2 to 7.

According to the invention, a hydraulic cylinder unit of the type mentioned is configured by

that a locking device is arranged on the cylinder, the effective thickness of which, viewed in the working direction, can be varied between a first thickness and a second thickness,

- That the flange-like fastening device at the first thickness of the locking device with play in one of two

Boundary surfaces of the pan slider limited recording of the pan slider is inserted and

- That is inserted in the inserted into the receptacle of the pan slide fastener after transferring the effective thickness of the locking device in the second thickness of the cylinder is locked on the pan slide.

Due to the existing game is an introduction of

flange-like fastening device in the recording readily automatable. By transferring the effective thickness of the locking device in the second thickness, however, the game is eliminated or at least substantially eliminated. This results in the current casting operation a sufficiently accurate coupling of the movement of the piston of the Hydraulikzylin- dereinheit with the movement of the pan slide, so that an accurate and good dosage of the outflow of liquid metal from the casting vessel is possible.

Preferably, the locking device is spring-loaded to the first thickness so that the effective thickness of the

Locking device, starting from the first thickness, only by actively acting on the locking device from the outside is variable. As a result, in particular, it can not happen that the effective thickness of the locking device assumes a value other than the first thickness in an uncontrolled manner. Any interference during insertion of the flange-like fastening device into the receptacle of the pan slide are thereby excluded. Furthermore, the locking device is preferably formed with respect to the second thickness as a self-locking device, so that the effective thickness of the

Locking device, starting from the second thickness, can only be varied from the outside by active action on the locking device. Because of this configuration, although it is necessary to actively transfer the effective thickness of the locking device in the second thickness. After transferring the effective thickness of the locking device in the second thickness, however, an active holding is no longer required.

It is possible that both the flange-type fastening device and the locking device are inserted into the receptacle of the pan slide. In this case, in the clamped state, the flange-like fastening device and the locking device would each be supported on one of the two boundary surfaces of the receptacle. Preferably, however, in the case of the fastening device introduced into the receptacle of the ladle slide, the locking device is arranged outside the receptacle. As a result, in particular the ladle slide can be made more compact and stable. Furthermore, bending forces that would otherwise be exerted on the pan slider can be avoided. It is possible that the locking device is manually operated. Preferably, however, the locking device is associated with an adjustment drive, by means of which the effective thickness of the locking device is adjustable. The adjusting drive can be designed, for example, as a further hydraulic cylinder unit or as a spindle drive.

Preferably, an attack device for attaching a handling tool is arranged on the cylinder. As a result, a simple, easy and safe handling of the hydraulic cylinder unit by a manipulator (for example an industrial robot) is possible. The object is further achieved by a pan slider with the features of claim 8. Advantageous embodiments of the pan slide according to the invention are the subject of the dependent claims 9 to 11.

According to the invention, a pan slide of the type mentioned is configured by

- That the hydraulic cylinder unit is formed according to the invention,

- That the locking device of the hydraulic cylinder unit is converted into the second thickness, so that the cylinder of the hydraulic cylinder unit is locked to the pan slide, and

- That seen in the working direction of the hydraulic cylinder unit, a clear width of the receptacle is greater than a thickness of the flange-type fastening device.

Preferably, the pan slide on a recess into which protrudes the locking device when it has the second thickness. With this configuration, the pan slider can be made more compact.

If the pan slider has the recess into which the locking device, if it has the second thickness, projects, it is possible that the flange-like fastening device in the locked state in the recording further comprises a game. The game in this case, however, is considerably less than when inserting the flange-like fastening device into the receptacle.

Alternatively, it is possible that in the locked state, the flange-like fastening device by means of

Locking device is pressed against one of the interfaces of the pan slide. In this case, the flange-like fastening device is held without play in the locked state in the receptacle. This embodiment is independent of whether the pan slide has the above-mentioned depression or not. The above-described characteristics, features and advantages of this invention, as well as the manner in which they are achieved, will become clearer and more clearly understood in connection with the following description of the embodiments, which will be described in detail in conjunction with the drawings. Here are shown in a schematic representation:

Fig. 1 is a ladle with a pouring device and a

Distributor vessel in section from the side,

2 shows a bottom of a casting vessel and a pan closure,

Fig. 3 is a plan view of a ladle closure and a

Hydraulic cylinder unit prior to connecting the hydraulic cylinder unit to the ladle closure,

4 shows the ladle closure and the hydraulic cylinder unit of FIG. 3 in the connected state, FIG.

5 is a perspective view of a hydraulic cylinder unit,

6 is a plan view of another hydraulic cylinder unit,

Fig. 7 is a ladle with a pouring device and a

Distributor vessel in section from the side,

8 shows a section through a pan closure and a

Shadow tube corresponding to the circle indicated by VIII in FIG. 7,

9 is a perspective view of a pan closure when applying or removing a

Shadow tube,

9 in the connected state with a manipulator, FIG. 11 shows a perspective view of the ladle closure and the shadow tube of FIG. 9 in the connected state without a manipulator, FIG.

Fig. 12 shows a detail of a receptacle and a holding element, Fig. 13 shows a distribution of holding elements and

Fig. 14 is a section through a screw connection. According to FIG. 1, liquid metal 1 - for example liquid steel 1 - is to be poured from a casting vessel 2 into another vessel 3, for example a tundish. For regulating the outflow of liquid metal 1 from the pouring vessel 2, the pouring vessel 2 has a ladle closure 4. The ladle closure 4 - hereinafter also referred to as pan slide 4 - is arranged on the underside 5 of the casting vessel 2. The ladle closure 4 has, according to FIGS. 1 and 2, an outlet opening 7 on its underside 6. Through the outlet opening 7, the liquid metal 1 emerges from the pouring vessel 2 when the pan closure 4 is open. For opening and closing the outlet opening 7, the ladle closure 4 has a closure device (not shown in the figures). The

Closure device may in particular, as indicated in Fig. 1 by a double arrow A, be designed as a slide.

To actuate the closure device, a hydraulic cylinder unit 8 (usually referred to as a pancake cylinder) is arranged on the slide valve 4. The hydraulic cylinder unit 8 has - see in particular Figures 3 and 4 - a cylinder 9 and a piston 10. The piston 10 is displaceable by means of the cylinder 9 in a working direction x.

The pan slide 4 has, according to FIG. 3, a receptacle 11 which is bounded by two boundary surfaces 12, 13. The two boundary surfaces 12, 13 extend according to FIGS. 3 and 4 parallel to each other and orthogonal to the working direction x. The two boundary surfaces 12, 13 have a distance a from one another in the working direction x. The distance a corresponds to a clear width of the receptacle 11.

On the cylinder 9 of the hydraulic cylinder unit 8 - see also Fig. 5, a flange-like fastening device 14 is arranged. The flange-type fastening device 14 extends transversely to the working direction x. A thickness D of the fastening device 14 is smaller in the working direction x than the clear width a The reverse view is thus the clear width a of the receptacle 11 is greater than the thickness D of the fastening device 14. On the cylinder 9 of the hydraulic cylinder unit 8, a locking device 15 is further arranged. An effective thickness d of the locking device 15 can be varied in the working direction x between a first thickness dl and a second thickness d2. In the illustration of FIG. 3, the

Locking device 15, the first thickness dl, in the illustration of FIG. 4, the second thickness d2. The second thickness d2 is greater than the first thickness dl.

In order to connect the hydraulic cylinder unit 8 with the pancake 4, the locking device 15 is initially set to have the first thickness d1. This state is, as already mentioned, shown in Fig. 3. The

Flange-type fastening device 14 has, as already mentioned, a thickness D which is smaller than the inside diameter a of the receptacle 11. The flange-like fastening device 14 can therefore be introduced by means of a suitable handling tool - for example, an industrial robot - with play in the receptacle 11 of the pan slide 4. For a simple and easy handling of the hydraulic cylinder unit 8 by means of the handling tool, an engagement device 16 is preferably arranged on the cylinder 9, to which the handling tool can be attached.

After insertion of the flange-like fastening device 14 in the receptacle 11 of the slide valve 4, the effective thickness d of the locking device 15 in the second thickness d2

transferred. Due to the transfer of the effective thickness d of the locking device 15 in the second thickness d2 of the cylinder 9 of the hydraulic cylinder unit 8 is locked on the pan pusher 4 (see Fig. 4). In this - the arrested - state of the

Cylinder 9 is the flange-like fastening device 14 in the embodiment according to FIGS. 2 to 5 by means of the locking device 15 to one of the interfaces 12, 13 ange- Then, for example - as well as in the prior art - the piston 10 are extended by means of the cylinder 9 until a front side of the piston 10 arranged clutch with a counter-coupling of the pan slide 4 enters a connection.

With sufficiently large dimensions of the receptacle 11 of the socket closure 4, it is possible that both the

flange-type fastening device 14 and the

Locking device 15 are inserted into the receptacle 11. On the one hand, however, this design would have increased space requirements. Furthermore, the locking device 15 would be pressed in this embodiment in the locked state to the other of the interfaces 12, 13, as shown in FIGS. 3 and 4 so to the interface 13. This would disadvantageously a bending stress of a connecting portion 17 of the pan closure 4 occur. Preferably, therefore, as shown in FIGS. 3 and 4, the locking device 15 is not disposed within, but outside of the receptacle 11. As a result, the ladle closure 4 can be made compact and a bending stress of the connection region 17 of the ladle closure 4 can be avoided.

As is shown in FIGS. 3 and 4, the locking device 15 preferably has a first part 18 and a second part 19. Seen in the working direction x, the first part 18 is arranged stationary. However, it is displaceable transversely to the working direction x. The second part 19 is arranged transversely to the working direction x fixed. However, it is displaceable in working direction x. The first and second parts 18, 19 cooperate with each other, for example, via guide slopes 20 or other guide slots. Is the first part 18 in the position shown in Fig. 3, the

Locking device 15 as effective thickness d, the first thickness dl on. If the first part 18 is in the position shown in FIG. 4, the locking device 15 has the second thickness d2 as effective thickness d. Preferably, the locking device 15 - for example by means of springs 21 - to the first thickness dl to spring-loaded. Starting from the first thickness dl, it is only possible by actively acting on the locking device 15 (more precisely, the first part 18) from the outside, the effective thickness d of the

Locking device 15 to vary. In the context of this action, the acting spring forces and in addition the frictional forces caused thereby between the first part 18 and the second part 19 must be overcome. For holding the effective thickness d of the locking device 15 at the first thickness dl, however, no action on the locking device 15 is required.

With regard to the second thickness d2, the locking device 15 is preferably designed as a self-locking locking device. This can be achieved, for example, in that contact surfaces 22 of the first part 18 and of the second part 19 that are in contact with one another when the locking device 15 has the second thickness d2 as the effective thickness d extend transversely (orthogonally) to the working direction x. Other configurations - for example, wavy configured contact surfaces 22 - are possible.

Due to the configuration of the locking device 15 as a self-locking device, the effective thickness d of the locking device 15 can also be varied from the outside only by actively acting on the locking device 15 (more precisely: the first part 18). In the context of this action, at least the frictional forces caused by the spring forces must be overcome. Depending on

Design must also be overcome, the spring forces themselves. To hold the effective thickness d of

Locking device 15 at the second thickness d2, however, - as with the first thickness dl - no effect on the locking device 15 is required.

It is possible that the transfer of the effective thickness d of the locking device 15 from the first thickness dl to the second thickness d2 and vice versa is done manually by an operator (with or without tools). It is also possible that the transfer of the effective thickness d of the locking device 15 from the first thickness dl to the second thickness d2 and vice versa is performed by means of the manipulator connecting the hydraulic cylinder unit 8 to the ladle closure 4 or the hydraulic cylinder unit 8 from the ladle closure 4 solves. Preferably, however, for this purpose, on the cylinder 9 of the hydraulic cylinder unit 8, a Versteilantrieb 23 is present, which is the

Locking device 15 is assigned. In this case, the effective thickness d of the locking device 15 by means of

Adjustment drive 23 can be adjusted. The adjusting drive 23 may be formed, for example, as shown in FIGS. 3, 4 and 5 as a spindle drive. Alternatively, the actuator 23 may, for example, be formed as another hydraulic or pneumatic cylinder unit (i.e., different from the hydraulic cylinder unit 8). This embodiment is shown in Fig. 6. Otherwise, the embodiment according to FIG. 6 corresponds to that of FIG. 5.

In the embodiment according to FIGS. 2 to 5 and also in the embodiment according to FIG. 6, the pan slide 4 has a depression 24. The locking device 15 protrudes into the recess 24 when it has the second thickness d2. On the other hand, when the locking device 15 has the first thickness d 1, it does not protrude into the recess 24.

In the context of the embodiment of FIGS. 2 to 5 and also in the context of the embodiment of FIG. Although recess 24 is preferred, it is not mandatory. If the depression 24 is present, however, it is possible-as an alternative to a play-free clamping of the flange-like fastening device 14 -that the flange-like fastening device 14 also has a clearance in the receptacle 11 in the locked state. However, in this case the game is considerably smaller than the game

Inserting the flange-type fastening device 14 in the receptacle 11. It may, for example, at 1 mm or less. In practice, as shown in Fig. 7 during the casting of the liquid metal 1 of the bottom 6 of the pan closure 4, a shadow tube 25 is further arranged. In order to be able to arrange the shadow tube 25 in a simple and reliable manner on the mortise closure 4, the pan closure 4 has a holding device 26 on its underside 6. The holding device 26 is arranged in the region of the outlet opening 7. It may in particular be designed as a retaining ring, which - relative to a vertical, surrounded by the outlet opening 7 axis 27 - the outlet opening 7 surrounds. The holding device 26 is usually made of steel.

From the holding device 26, the shadow tube 25 is held via a counter-holding device 28, which is attached from below to the bottom 6 of the pan closure 4. The counter-holding device 28 is arranged at an upper end of the shadow tube 25. It usually consists of steel. The shadow tube 25, however, consists of a refractory material. To a stable connection of the holding device 26 and the

To ensure counter-holding device 28 with each other, the holding device 26 may have a number of receptacles 29 as shown in FIGS. 8 to 11. The receptacles 29 can - see particularly clearly Fig. 12 - be formed in particular L-shaped. They are - see particularly clearly Fig. 13 -, with respect to the vertical axis 27, uniformly distributed around the outlet opening 7 around. The counter holding device 28 has a corresponding number of holding elements 30. In each receptacle 29 is thus in the connected state of holding device 26 and counter-holding device 28 each have a holding element 30 is inserted. The holding elements 30 may be formed, for example, as a round bolt, which - see again Fig. 13 - protrude radially away from the vertical axis 27. The L-shaped receptacles 29 are open at the bottom. To the

Connecting the shadow tube 25 with the ladle closure 4 is - for example by means of in FIGS. 9 and 10 shown with manipulator 31 - the counter holding device 28 (and with her the shadow tube 25) led upwards, so in the direction of the vertical axis 27 on the ladle closure 4 moves. This movement takes place until the holding elements 30 are inserted into the receptacles 29 - more precisely, in corner regions of the receptacles 29. Then, the counter-holding device 28 is rotated about the vertical axis 27 by a predetermined angle of rotation (FIG. 13), thereby establishing the connection of the holding device 26 and counterpart device 28. The receptacles 29 have guide slots 32. During rotation of the counter-holding device 28 by the angle of rotation, the holding elements 30 of the counter-holding device 28 abut against the guide slots 32. The guide slots 32 have a positive slope in initial areas 33. In end regions 34, however, they run horizontally (shown in dashed lines in FIG. 12) or, as shown in FIG. 12 by solid lines, with (slightly) negative slope.

The holding device 26 is arranged stationary with respect to its lateral positioning on the underside 6 of the ladle closure 4 and also with respect to its rotational position about the vertical axis 27. Seen in the vertical direction - ie seen in the direction of the vertical axis 27 - the holding device 26 on the underside 6 of the pan closure 4, however, is preferably arranged displaceably. For this purpose, the holding device 26 is pressed in the vertical direction with a spring force to the underside 6 of the ladle closure 4. If a downwardly acting force is exerted on the holding device 26 which exceeds the spring force, the holding device 26 is therefore deflectable downwards.

For example, as shown in FIGS. 8 to 11, the holding device 26 by means of a number

Bolt 35 may be attached to the bottom 6 of the pan closure 4.

The bolts 35 are - see Fig. 8 and for a single bolt 18, the illustration in Fig. 14 - on the bottom 6 of the pan closure 4 in the pan closure. 4 screwed so that screw heads of the bolts 35 from the bottom 6 of the socket closure 4 have a predetermined distance b. Bolt necks of the bolts 35 penetrate recesses 36 of the holding device 26. The recesses 36 have a slightly larger diameter than the screw necks of the bolts 35. For example, springs 37 may be arranged between the recesses 36 and the screw heads of the bolts 35. The springs 37 exert on the holding device 26 an upward (ie towards the bottom 6 of the pan closure 4) directed spring force by means of which the holding device 26 is pressed against the underside 6 of the pan closure 4.

Preferably, the number of bolts 35 corresponding to the number of receptacles 29. Thus, it is possible that the bolt 35 is seen around the vertical axis 27 around each arranged in the gap between two receptacles 29. However, other embodiments are possible in which the number of bolts 35 can be selected independently of the number of receptacles 29.

The shadow tube 25 is preferably not manually, but fixed by means of the manipulator 31 on the underside 6 of the pan closure 4 and released from the underside 6 of the Pfan NEN closure 4. The manipulator 31 may be formed, for example, as an industrial robot. Regardless of its concrete design, however, the manipulator 31 according to FIGS. 9 and 10 has an assembly tool 38. For stable interaction of the assembly tool 38 with the counter-holding device 28, the counter-holding device 28 according to FIG. 13 has an engagement device 39 to which the assembly tool 38 can be attached. The engagement device 39 may be formed, for example, as an arrangement of two surfaces 40, which are either parallel and have a guide aid in an initial region or slightly tapered as shown in FIG. 13 at a small angle β. The angle β may, for example, be between 2 ° and 10 °. The ladle closure 4 usually has an attachment tip 41 in the region of the outlet opening 7. The attachment tip 41 serves to guide the liquid metal 1 out of the casting vessel 2 into the shadow tube 25. In a preferred embodiment, the attachment tip 41 protrudes into the upper end of the shadow tube 25. Usually, the shadow tube 25 continues to have a widening 42 at its upper end facing the socket closure 4. The attachment tip 41 preferably projects into the widening 42 as shown in FIG. 8.

The shadow tube 25 is, as already mentioned, made of refractory material. It is therefore relatively brittle and breaks easily. The shadow tube 26 should therefore be kept as free as possible of mechanical stresses in the counter-holding device 28. For this purpose, the shadow tube 25 may have, for example, a collar 43 at its upper end facing the ladle closure 4, for example. The counter-holding device 28 has an annular flange 44 in this case. The annular flange 44 protrudes radially inward and engages over the collar 43. As a result, the shadow tube 25 can be held in the counter holding device 28 stable, reliable and stress-free.

In summary, the present invention thus relates to the following facts:

A ladle slide 4 of a casting vessel 2 has one of two interfaces 12, 13 limited shot 11. In the receptacle 11, a flange-like fastening device 14 of a hydraulic cylinder unit 8 can be inserted. The hydraulic cylinder unit 8 has a cylinder 9 and a piston 10 displaceable by means of the cylinder 9 in a working direction x. The flange-like fastening device 14 is arranged on the cylinder 9 and extends transversely to the working direction x. On the cylinder 9, a locking device 15 is further arranged, the effective thickness d seen in the working direction x between a first thickness dl and a second thickness d2 is variable. A clear width a of the receptacle 11 is in Working direction x seen larger than a thickness D of

Flange-type fastening device 14. In the first thickness dl of the locking device 15, the flange-like fastening device 14 with play in the receptacle 11 can be inserted. Then, the effective thickness d of the locking device 15 is converted into the second thickness d2 and thereby the cylinder 9 is locked on the slide 4 pans.

The present invention has many advantages. In particular, it is possible in a simple, reliable and robust manner to automatically connect the hydraulic cylinder unit 8 (ie the slide slide cylinder) to the slide valve 4 and also to detach it from the slide valve 4. Furthermore, a supply of energy to the actuator 23 only for changing the effective thickness d of the clamping device 15 is required. In the two states in which the clamping device 15 has the first thickness d 1 and the second thickness d 2, it is not necessary to supply energy to the adjusting drive 23. Although the invention has been further illustrated and described in detail by the preferred embodiment, the invention is not limited by the disclosed examples, and other variations can be derived therefrom by those skilled in the art without departing from the scope of the invention.

LIST OF REFERENCE NUMBERS

1 liquid metal

2 pouring vessel

3 other vessel

4 pans closure

5 Bottom of the casting vessel

6 Bottom of the pan closure

7 outlet opening

8 hydraulic cylinder unit

9 cylinders

10 pistons

11 recording

12, 13 interfaces

14 flange-type fastening device

15 clamping device

16 attacking device

17 connection area

18 first part

19 second part

20 guide slopes

21 springs

22 contact surfaces

23 adjustment drive

24 deepening

25 shade tube

26 holding device

27 vertical axis

28 Gegenhaiteeinrichtung

29 shots

30 holding elements

31 manipulator

32 leadership scenes

33 start areas

34 end areas

35 bolt

36 recesses

37 springs _{± g}

38 assembly tool

39 attacking device

40 areas

41 nosepiece

42 expansion

43 collar

44 ring flange

A double arrow

a distance, inside width b distance

D, d, dl, d2 thicknesses

x working direction

angle of rotation

ß angle

Claims

claims

1. hydraulic cylinder unit for a ladle slide (4) of a casting vessel (2),

- wherein the hydraulic cylinder unit has a cylinder (9) and a piston (10) displaceable by means of the cylinder (9) in a working direction (x),

- Wherein on the cylinder (9) a flange-like fastening device (14) is arranged, which extends transversely to the working direction (x),

- wherein on the cylinder (9) a locking device (15) is arranged, the effective thickness (d) seen in the working direction (x) between a first thickness (dl) and a second thickness (d2) is variable,

- Wherein the flange-like fastening device (14) at the first thickness (dl) of the locking device (15) with play in one of two interfaces (12, 13) of the pan slide (4) limited recording (11) of the pan slide (4) is insertable and

- When in the receptacle (11) of the pan slide (4) inserted fastening device (14) after transferring the effective thickness (d) of the locking device (15) in the second thickness (d2) of the cylinder (9) on the pan slide (4) locked is.

2. Hydraulic cylinder unit according to claim 1,

characterized ,

in that the locking device (15) is spring-loaded to the first thickness (d1), so that the effective thickness (d) of the

Locking device (15), starting from the first thickness (dl), only by actively acting on the locking device (15) is variable from the outside.

3. hydraulic cylinder unit according to claim 1 or 2,

characterized ,

in that the locking device (15) is designed as a self-locking locking device with respect to the second thickness (d2), so that the effective thickness (d) of the locking device (15), starting from the second thickness (d2), only by actively acting on the locking device (15) is variable from the outside.

4. Hydraulic cylinder unit according to claim 1, 2 or 3, d a d e r c h e c e n e c e n e,

in that the locking device (15) is arranged outside the receptacle (11) when the fastening device (14) is inserted into the receptacle (11) of the pan slide (4).

5. Hydraulic cylinder unit according to one of the above claims, d a d u c h e c e n e c e n e,

in that the locking device (15) is assigned an adjustment drive (23) by means of which the effective thickness (d) of the locking device (15) can be adjusted.

6. hydraulic cylinder unit according to claim 5,

characterized ,

that the Versteilantrieb (23) is designed as a further hydraulic cylinder unit or as a spindle drive.

7. Hydraulic cylinder unit according to one of the above claims, d a d u c h e c e n e c e n e,

in that an engagement device (16) for attaching a handling tool is arranged on the cylinder (9).

8. pan slider of a pouring vessel (2),

- wherein the pan slider has one of two interfaces (12, 13) limited shot (11),

- wherein in the receptacle (11) a flange-fastening device (14) of a hydraulic cylinder unit (8) is inserted,

- wherein the hydraulic cylinder unit (8) is designed according to one of the above claims,

- wherein the locking device (15) of the hydraulic cylinder unit (8) is converted into the second thickness (d2), so that the

Cylinder (9) of the hydraulic cylinder unit (8) is locked on the slide valve, and - In the working direction (x) of the hydraulic cylinder unit (8) seen a clear width (a) of the receptacle (11) is greater than a thickness (D) of the flange-fastening device (14).

9. pan slider according to claim 8,

characterized,

the ladle slide has a depression (24) into which the locking device (15) protrudes when it has the second thickness (d2).

10. pan slider according to claim 9,

characterized,

that the fastening device (14) in the locked state in the receptacle (11) further comprises a game.

11. ladle slide according to claim 8 or 9,

characterized,

that in the locked state, the flange-like fastening device (14) by means of the locking device (15) is pressed against one of the boundary surfaces (12, 13) of the pan slide.