EP2624977B1 - Driver for a steel strip coiling installation - Google Patents

Description

Field of engineering

The present invention relates to a driver for a steel strip coiler having at least one support drive roller mounted on a frame, and at least one drive roller engageable with the support drive roller, which is mounted on at least one frame connected to the rocker, wherein the drive roller is mounted on a bearing portion of the rocker, and a method for removing a drive roller from such a driver.

State of the art

In driving devices, also called drivers, metal strip is clamped between a pair of rollers, driven or deflected. Drivers are typically used in rolling trains, where they are placed in front of rolled strip reels to adjust the strip tension in front of the reel by means of two rollers, namely the driving roller and the supporting driving roller.

Steering drivers have the additional task of reducing sideways migrations of the rolled strip before reeling. For this purpose, for example, the pivotable drive roller is driven and employed against the stationary Stützreibreibrolle that the rolled strip undergoes a desired strip tension and a desired lateral displacement by the position of the drive roller relative to the Stützreibrolle.

Such steering drivers are for example off EP747147B1 or AT500689B1 known.

In EP747147B1 a steering driver is shown, the pivotable drive roller between two wings by means of is arranged stored stored both ends of the driving roller axle. Both wings are rigidly connected to a torsion spring of a frame, which forms an axis of rotation for the wings.

In AT500689B1 , which forms the basis for the preamble of claim 1, a similar steering driver is disclosed in which the rockers, however, can be pivoted independently of each other on a rotation axis of a frame.

The drive roller and the support drive roller of a steering actuator must be regularly cleaned and polished, as for example by carbon caking, on the reel to be reeled up dirt particles, or caused by tapping surface defects in the reeled tape, the surface of the drive roller and the support roller are uneven, which in turn may cause damage to the surface of the reeled tape.

In EP747147B1 or AT500689B1 the drive roller axle is mounted on a bearing area of the rocker, wherein the drive roller is located below the rocker. The bearings of the drive roller, in order to avoid damage during puncture, for example, provided by spring-activated balancing play.

A removal of the drive roller upwards is not possible, since such removal the rocker is in the way and blocks the way up. For removal to the bottom, right or left in the operating state, the path is blocked by the Stützreibrolle and the frame. Before a removal is possible, therefore, only an obstructed path must be opened.

In order to facilitate cleaning and polishing of the capstan and Stützreibrolle usually the pair of rollers supporting the swinging pair is pivoted by means of swing cylinders in an intermediate position; this is also necessary to replace the drive roller. The intermediate position is often reached after pivoting of the pair of rockers by 180 °. Subsequently, the drive roller and the support drive roller in the installed state usually cleaned by hand and ground or polished. By cleaning and grinding or polishing in the system there is a security risk. This is because the people involved have to go inside the plant between the plant parts, which must be reliably turned off and blocked. In addition, there is a safety risk due to the time pressure required to carry out these activities, since the cleaning and grinding or polishing must be carried out in the time required for the work roll change of scaffolding time of 10 to 15 minutes. If, due to cleaning, sanding and polishing, it is not possible to produce a sufficiently uniform surface on the drive roller or support drive roller, or if it is damaged, the drive roller or support drive roller must be removed from the frame after swiveling the swinging arm and replaced with a new drive roller or support drive roller. This must be in accordance with the steering drivers EP747147B1 or AT500689B1 the entire swing construction including the drive pulley are removed. Due to the large number of fasteners to be solved and the mass of the frame together with the drive roller maintenance of drive rollers and Stützreibrollen causes a considerable amount of time. In addition, the drive roller is poorly accessible for maintenance when it is located between the wings.

Summary of the invention Technical task

The object of the present invention is to overcome these disadvantages of the prior art. For this purpose, a driver and a method for replacing a drive roller in the driver is proposed, which less time consuming work with less security risks Changing the drive rollers causes conventional drivers and procedures.

Technical solution

This object is achieved by a driver for a steel strip coiler having at least one support drive roller mounted on a frame and at least one drive roller engageable with the support drive roller which is mounted on at least one rocker connected to the frame, the drive roller being mounted on a bearing area of the rocker , characterized in that the storage area is open for insertion or for removal of the drive roller to the side and / or upwards in position of the rocker in the operating position, and the driver has a fixing mechanism for fixing the drive roller to the storage area.

Under the storage area is to be understood the area of the rocker, in which the drive roller is attached to the rocker.

Advantageous Effects of the Invention

The storage area is open for insertion or removal of the drive roller to the side and / or upwards in position of the rocker in the operating position, therefore, the storage area is not an expansion of the drive roller to the side and / or up in the way. A drive roller can therefore be removed if necessary to the side and / or up from the rocker, without the rocker with the drive roller substantially remove from the operating position or rocker must be completely dismantled with the drive roller. Operating position is a position of the rocker to be taken, which is taken in normal operation of the driver.

The driver according to the invention has a fixing mechanism for fixing the drive roller to the storage area. This ensures during operation that the drive roller does not undesirably break off to the side and / or upwards. In the fixed state, a controlled displacement of the drive roller in different operating positions is possible.

Preferably, the positioning of the drive roller to the support drive roller in the fixed state by changing the setting of the fixing mechanism in different positions can be changed.

According to one embodiment of the present invention, the fixing mechanism comprises a displaceable latch, which is preferably fixable to the rocker.

According to another embodiment of the present invention, the fixing mechanism comprises a folding device whose parts are foldable about at least one axis attached to the rocker, and which are fixable to the rocker. For example, it may be two interlockable arms that are locked by a movable wedge. Each of the arms works on a different axis.

The support drive roller is located below the drive roller. A removal of the support friction roller up is therefore not possible as long as the drive roller is installed in the driver. When the drive roller has been removed, the path for the support drive roller is open for removal upwards.

When the drive roller is mounted between a pair of rockers, the spacing of the rockers is preferably greater than the length of the support drive roller. This ensures that the support drive roller can be removed by the resulting due to removal of the drive roller free space upwards.

If the distance of the rockers in the operating position is less than the length of the Stützreibrolle, it is preferred that at least one of the rockers is displaceable or pivotable relative to the other rocker, when the drive roller is removed. In this way it is achieved that the support drive roller can be removed.

The steel strip coiler is preferably a steel strip coiler for hot strip.

Preferably, the driver is a steering driver.

According to a preferred embodiment of the present invention, the drive roller and the support drive roller are arranged in a holding device.

The holding device, which may be a holding frame, for example, thus contains both the drive roller and the support drive roller.

This makes it possible, for removing or for inserting a pair of driving roller and supporting drive roller only to engage the holding device and to have to remove it from the driver.

Because the drive roller and the support drive roller need not be removed individually or inserted individually into the driver, removal and insertion can be accomplished more quickly.

The support drive roller can be mounted stationary or displaceable on the frame.

According to one embodiment, the driving roller axle and / or the supporting driving roller axis about which the driving roller or the supporting driving roller rotates consists of at least two driving roller axles and supporting driving roller axles, respectively, wherein at least one of the driving roller axle parts and supporting driving roller axle parts is attached to the cylindrical body Drive roller or support drive roller releasably fastened-for example, via a connecting flange, a perforated disc with sliding driving pin, or claw coupling - shaft stub is executed. The stub shaft can be designed as a hollow shaft, in which a motor-driven shaft can be inserted to drive the drive roller or the support drive roller.

This allows for a quick removal of the drive roller and / or Stützreibrolle from the driver, which reduces a caused by time pressure during capstan change security risk.

According to one embodiment of the driver according to the invention, the support drive roller can be removed laterally in the direction of its longitudinal axis from the driver. It can also be inserted laterally in the direction of its longitudinal axis into the driver.

In the in EP747147B1 or AT500689B1 shown drivers one end of the rocker is pivotable about an axis of rotation, while the other end of the rocker is connected to an actuating device such as a pressure medium cylinder, preferably a hydraulic cylinder. By adjusting this actuator, the rockers can be pivoted about its axis of rotation, for example, to enable the removal of the drive roller or to control or regulation of the distance of the drive roller and Stützreibrolle.

The storage area of the drive roller is located between the pivotable end and the end of the rocker connected to the actuating device.

Also in the driver according to the invention, the rockers are pivotable about an axis of rotation arranged in a pivot axis of the rocker, and they are connected in an operating region with an actuating device. In this case, the storage area of the drive roller as in EP747147B1 or AT500689B1 between the axis of rotation range and the operating range.

According to another embodiment, the axis of rotation range may be between the storage area and the operating area. An advantage of such an embodiment is that when pressing the drive roller forces flow better into the rocker and for the rocker favorable stress conditions are generated. The effective distance of an actuating device acting on one end of the rocker can also be structurally more easily enlarged in such a construction than in FIG EP747147B1 or AT500689B1 executed embodiments. By increasing the effective distance equal forces can be achieved with smaller actuators, or achieve greater forces with the same actuators.

Another object of the present application is a method for removing a drive roller from a driver according to the invention.

• Öffnen des Fixierungsmechanismus,
• Entnehmen der Treibrolle zur Seite und/oder nach oben aus dem Treiber,

umfasst.This method is characterized in that it includes the steps

• Opening the fixing mechanism,
• Remove the drive roller to the side and / or upwards from the driver,

includes.

By opening the fixing mechanism is meant that the fixation of the drive roller is solved at the storage area.

The support drive roller in a driver is held in the driver by fixation devices so as not to change position at all during normal operation or to change position beyond an acceptable level. The support drive roller can be fixed, so that no movement is possible. It may also be displaceable to an acceptable or desired extent. The degree of displaceability that is acceptable or desired depends on the respective operating state. Depends on the deflection forces of the driver For example, the distance between the axes of the driving roller and the supporting drive roller can be varied to a certain extent.

• Lösen von Fixierungsvorrichtungen zur Fixierung der Stütztreibrolle im Treiber,
• Entnehmen der Stütztreibrolle nach oben aus dem Treiber, umfasst.

An embodiment of the method according to the invention is characterized in that, after the removal of the driving roller, there are additionally the steps

• Releasing fixation devices for fixing the support drive roller in the driver,
• Remove the support drive roller from the top of the driver.

By resulting from the removal of the drive roller opening and the support drive roller can be removed upwards from the driver.

According to another embodiment, the Stützreibrolle for removal laterally, that is, in the direction of its longitudinal axis, are pulled out of the driver. This can be done before or after removing the drive roller according to the invention. This can also be done during the removal of the drive roller according to the invention from the driver; In this way, removal of the drive roller and the support drive roller can be carried out faster than if the two withdrawals take place successively.

• Lösen von Fixierungsvorrichtungen zur Fixierung der Stütztreibrolle im Treiber,
• Entnehmen der Stütztreibrolle durch seitliches Herausziehen aus dem Treiber.

Then, the method according to the invention additionally comprises the steps during the removal of the drive roller

• Releasing fixation devices for fixing the support drive roller in the driver,
• Remove the support drive roller by pulling it sideways out of the driver.

According to a preferred embodiment of the present invention, the driving roller and the supporting driving roller are taken out in pairs by removing a holding device in which a pair of the driving roller and the supporting driving roller are disposed.

Brief description of the drawings

• Figur 1a zeigt eine Seitenansicht einer Ausführungsform eines erfindungsgemäßen Treibers.
• Figur 1b zeigt einen Treiber gemäß Figur 1a aus einer erhöhten Schrägansicht.
• Figur 2 zeigt zeigt eine Ansicht eines Treibers gemäß Figur 1b aus einer erhöhten Schrägansicht mit in einer Haltevorrichtung angeordneter Treibrolle und Stütztreibrolle.
• Figur 3 zeigt eine Ausführungsform eines erfindungsgemäßen Treibers, bei der sich der Drehachsenbereich 11 zwischen dem Lagerbereich 7 und dem Betätigungsbereich 12 befindet.
• Figur 4 zeigt einen erfindungsgemäßen Treiber mit entnommener Stütztreibrolle aus einer erhöhten Schrägansicht.
• Figur 5 zeigt eine Alternative für den Fixierungsmechanismus zur Fixierung der Treibrolle am Lagerbereich.
• Figur 6 zeigt eine weitere Ausführungsform eines erfindungsgemäßen Treibers, bei der sich der Drehachsenbereich 11 zwischen dem Lagerbereich 7 und dem Betätigungsbereich 12 befindet.

The invention will be described by way of example in the attached schematic figures.

• FIG. 1a shows a side view of an embodiment of a driver according to the invention.
• FIG. 1b shows a driver according to FIG. 1a from an elevated perspective view.
• FIG. 2 shows a view of a driver according to FIG. 1b from an elevated oblique view arranged in a holding device drive roller and Stützreibrolle.
• FIG. 3 shows an embodiment of a driver according to the invention, in which the axis of rotation of the axis 11 between the storage area 7 and the actuating portion 12 is located.
• FIG. 4 shows a driver according to the invention with removed Stützreibrolle from an elevated perspective view.
• FIG. 5 shows an alternative for the fixing mechanism for fixing the drive roller to the storage area.
• FIG. 6 shows a further embodiment of a driver according to the invention, in which the axis of rotation of the axis 11 between the storage area 7 and the actuating portion 12 is located.

Description of the embodiments

FIG. 1a a side view of a driver according to the invention 1 for a steel strip coiler, especially a steering driver for a hot strip coiler. The driver 1 comprises a supported on a frame 2 Stützreibrolle 3, and a engageable with respect to the Stützreibrolle roller 4 in the FIG. 1 For example, the drive roller 4 and the support drive roller 3 are shown by dashed lines only because they are hidden in the side view of the frame 2 and other parts of the driver. The capstan 4 is supported on a pair of wings 5a, 5b connected to the frame. In the side view of FIG. 1 only one rocker 5a can be seen, the second rocker 5b of the pair is in this View hidden by rocker 5a. The pair of rockers 5a, 5b is in the operating position. The pair of rockers 5a, 5b is pivotable about an axis of rotation 6 of the frame 2. The drive roller 4 is attached to a storage area 7 of the rockers. The storage area 7 is open for insertion or for removal of the drive roller 4 to the side upwards in the position of the rockers in the operating position. The storage area is shown with a corrugated closed line. A fixing mechanism for fixing the drive roller 4 at the storage area 7 is present, it is designed as a sliding latch 8. In the illustrated position of the bolt 8 this is not yet in its final position in which he fixed the drive roller 4 at the storage area 7, moved. For clarity, a part of the rocker 5 is shown cut, so that the course of the bolt 8 in the rocker 5 is partially shown. When the latch 8 from the position shown to its end position, as in the following FIG. 1b can be seen, is driven, on the one hand, the drive roller 4 is fixed, and on the other hand, the Ausbalancierungstöpfe 20a, 20b for play-free position of the bearings of the drive roller 4 is activated.

FIG. 1b shows a driver 1 according to FIG. 1a from an elevated perspective view. To FIG. 1a the same parts are provided with the same reference numerals. In contrast to FIG. 1a the bolt 8 of the fixing mechanism is shown in its end position, in which it fixes the drive roller on the bearing portion 7 of the wings 5a, 5b. Drive roller 4 and support drive roller 3 are better visible than in FIG. 1a , The second rocker 5b of the pair of rockers 5a, 5b is in contrast to FIG. 1a recognizable.

As well in FIG. 1a as well as in FIG. 1b is one end of the rockers 5a, 5b respectively connected to an actuating device, especially a hydraulic cylinder 9a, 9b. By adjusting these hydraulic cylinders 9a, 9b, the rockers 5a, 5b can be pivoted about their axis of rotation 6, for example, to adjust the distance from the drive roller 4 to the support drive roller 3.

The storage area 7 of the drive roller is located between the pivotable about the rotation axis 6 and the end connected to the hydraulic cylinder 9a, 9b of the actuator end of the wings 5a, 5b.

FIG. 2 shows another view of a driver according to FIG. 1b from an elevated perspective view. To FIG. 1b the same parts are provided with the same reference numerals. In contrast to FIG. 1b the bolt 8 of the fixing mechanism is shown in its initial position in which it does not fix the drive roller 4 to the storage area 7. Drive roller 4 and support drive roller 3 are not installed in the driver 1. They are arranged in a holding device, especially a holding frame 10. Installation or removal of the drive roller 4 and support drive roller 3 takes place by inserting or removing the support frame 10 in the frame 2 of the driver. 1

FIG. 3 shows a view of a driver according to the invention in side view analogous to FIG. 1a , To FIG. 1a the same parts are provided with the same reference numerals. For clarity, drive roller 4 and support drive roller 3 are not shown. The rotation axis 6 is arranged in a rotation axis region 11 of the rocker 5a. The hydraulic cylinder 9a is disposed in an operating portion 12 of the rocker 5a. In contrast to FIG. 1a is the rotation axis region 11 between the storage area 7 and the actuating portion 12th

FIG. 4 shows a view of a driver according to the invention analogously FIG. 1b from an elevated perspective view. To FIG. 1b the same parts are provided with the same reference numerals. In the driver 1, no drive roller is used and not shown accordingly. The support drive roller 3 is also not used. FIG. 4 shows the Stützreibrolle in removed state. The Stützreibrolle 3 is laterally in the direction of her Longitudinal axis of the driver 1 removed or inserted into the driver 1. FIG. 4 shows a removal frame, on which the support drive roller 3 is executed from the driver 1 or is inserted into the driver 1.

The fixing mechanism for fixing the drive roller 4 on the storage area 7 need not be designed as a sliding latch 8. FIG. 5 shows an alternative fixing mechanism comprising a folding device with two folding arms 14, 16 which are locked by a movable wedge device 18. Each of the arms 14, 16 folds about another axis, arm 14 about axis 15, and arm 16 about axis 17. The two arms 14, 16 are connected via the axes 15, 17 with the rocker 5a. The movable wedge device 18 is attached to the arm 16; by a hydraulic cylinder 19, it is movable. Arm 14 has bulges that fit in indentations on the movable wedge device 18. When closing the fixing mechanism, the arms 14, 16 fold into the position shown, and the hydraulic cylinder 19 moves the movable wedge device 18 such that the indentations slide over the bulges. Thus, the two arms 14, 16 are locked together.

FIG. 6 shows a view of a driver according to the invention in side view analogous to FIG. 1a and FIG. 3 , To FIG. 1a the same parts are provided with the same reference numerals. The rotation axis 6 is arranged in a rotation axis region 11 of the rocker 5a. The hydraulic cylinder 9a is disposed in an operating portion 12 of the rocker 5a. As in FIG. 3 is unlike FIG. 1a the rotation axis area 11 between the storage area 7 and the operating area 12. FIG. 3 and FIG. 6 differ in the shape of the rocker 5a and the way the drive roller is mounted on the bearing area of the rocker.

List of reference numbers

1

driver

2

frame

3

Supporting driving roller

4

capstan roller

5a, 5b

wing

6

axis of rotation

7

storage area

8th

bars

9a, 9b

hydraulic cylinders

10

holding frame

11

Rotary axis range

12

operating range

13

sampling frame

14

poor

15

axis

16

poor

17

axis

18

Movable wedge device

19

hydraulic cylinders

20a, 20b

Ausbalancierungstöpfe

Claims (14)

1. Driver (1) for a steel strip coiling installation having at least one supporting drive roller (3), which is mounted on a frame (2), and at least one drive roller (4), which can be adjusted in respect of the supporting drive roller (3) and is mounted on at least one rocking arm (5a, 5b) connected to the frame (2), wherein the drive roller (4) is attached to a bearing region (7) of the rocking arm (5a, 5b), characterised in that the bearing region (7) is open for introducing or removing the drive roller (4) sideways and/or upwards when placing the rocking arm (5a, 5b) in the operating position, and the driver (1) has a fixing mechanism for fixing the drive roller (4) to the bearing region (7).
2. Driver (1) according to claim 1, characterised in that the positioning of the drive roller (4) in respect of the supporting drive roller (3) in the fixed state can be varied by changing the setting of the fixing mechanism to different positions.
3. Driver (1) according to claim 1 or 2, characterised in that the fixing mechanism comprises a displaceable bolt (8) which preferably can be fixed to the rocking arm (5a, 5b).
4. Driver (1) according to one of claims 1 to 3, wherein the drive roller (4) is mounted between a pair of rocking arms (5a, 5b), characterised in that the distance between the rocking arms (5a, 5b) is greater than the length of the supporting drive roller (3).
5. Driver (1) according to claim 4, characterised in that at least one of the rocking arms (5a, 5b) can be displaced or pivoted relative to the other rocking arm (5b, 5a).
6. Driver (1) according to one of claims 1 to 5, characterised in that the steel strip coiling installation is a steel strip coiling installation for hot-rolled strip.
7. Driver (1) according to one of claims 1 to 6, characterised in that the driver (1) is a directional driver.
8. Driver (1) according to one of claims 1 to 7, characterised in that drive rollers (4) and supporting drive rollers (3) are arranged in a holding device.
9. Driver (1) according to one of claims 1 to 8, characterised in that the drive roller axle and/or the supporting drive roller axle, about which the drive roller (4) or the supporting drive roller (3) rotates, consist of at least two drive roller axle parts or supporting drive roller axle parts, wherein at least one of the drive roller axle parts or supporting drive roller axle parts is designed as a shaft stub which can be detachably fixed to the cylindrical body of the drive roller or supporting drive roller.
10. Driver (1) according to one of claims 1 to 9, characterised in that the supporting drive roller can be removed from the driver sideways in the direction of the longitudinal axis of said supporting drive roller.
11. Method for removing a drive roller (4) from a driver (1) according to one of claims 1 to 10, characterised in that it comprises the steps of

    - opening the fixing mechanism,

    - removing the drive roller (4) sideways and/or upwards from the driver (1).
12. Method according to claim 11,
    characterised in that after removing the drive roller (4) it additionally comprises the steps of

    - undoing fixing devices for fixing the supporting drive roller (3) in the driver (1),

    - removing the supporting drive roller (3) upwards out of the driver (1).
13. Method according to claim 11, characterised in that during the removal of the drive roller (4) it additionally comprises the steps of

    - undoing fixing devices for fixing the supporting drive roller (3) in the driver (1),

    - removing the supporting drive roller (3) by pulling it sideways out of the driver (1).
14. Method according to claim 11, characterised in that drive roller (4) and supporting drive roller (3) are removed from the driver (1) in pairs by removing a retaining device in which a pair consisting of drive roller (4) and supporting drive roller (3) is arranged.

Images