WO2010069766A1

WO2010069766A1 - Pressing arrangement for a paper, cardboard, or tissue making machine

Info

Publication number: WO2010069766A1
Application number: PCT/EP2009/066211
Authority: WO
Inventors: Christian Müller
Original assignee: Voith Patent Gmbh
Priority date: 2008-12-18
Filing date: 2009-12-02
Publication date: 2010-06-24
Also published as: DE102008054858A1

Abstract

The invention relates to a pressing arrangement for draining a fibrous web, in which the two bearing blocks (7, 8) are releasably interconnected on at least one side by means of at least one connecting element (11) that extends between the bearing blocks. Furthermore, i) the connecting element has a first holding section, and the first bearing block has a first cavity including a first opening that faces the second bearing block, or ii) the first bearing block has a first holding section, and the connecting element has a first cavity including a first opening facing the first bearing block. Also, iii) at least one first strip (19, 22), which can be moved from a mounting or dismounting position into an operational position, and vice versa, in the first cavity, is disposed in the first cavity. iv) In the operational position, the first strip is disposed in the cavity in such a way that the one holding section is retained in the first cavity when the connecting element is subjected to tensile stress, the holding section resting against the at least one first strip, and v) in the mounting or dismounting position, the one strip is disposed in the one cavity in such a way that the one holding section can be inserted into or removed from the one cavity through the one opening.

Description

Press arrangement for a paper, board or tissue machine

The invention relates to a pressing arrangement for dewatering and / or smoothing a paper, cardboard, tissue or a second fibrous web for a machine for producing and / or finishing the same with at least one press nip formed by a roll and a counter roll. In such press arrangements, on at least one side, i. Leader and / or drive side, the axis of the roller on a first bearing block and the axis of the backing roll on a second to the first bearing block separate bearing block, wherein the two bearing blocks on each side over at least one, usually two, between the bearing blocks extending connecting element (s) are releasably connected together.

Such pressing arrangements are known, for example, from DE 41 10 205. In such pressing arrangements, the connecting elements are designed as tension rods, whereby, during operation of the pressing arrangement, a flow of force between the rollers via the tension rods flows between the opposite bearing blocks. The tension rods are in this case held at their holding portions in each case in recesses of the bearing blocks and can be guided by them in the machine direction openings of the recesses for their assembly or disassembly out of these or in this.

Press arrangements are also known from the prior art, in which the tie rods formed as connecting elements are held at their respective holding sections by oriented in the cross-machine direction retaining bolts on the respective bearing block, which are supplied to the mounting blocks or dismantling the bearing blocks in the cross-machine direction or away from them have to.

A disadvantage of the known solutions that for the assembly and disassembly of the connecting elements a considerable space requirement is necessary and that further the assembly or disassembly of the often very heavy tension rods can not be automated.

It is therefore the object of the present invention to propose an improved press arrangement of the type mentioned at the outset in which the abovementioned disadvantages no longer occur.

The object is solved by the features of claim 1. The claim 1 has two solution aspects.

According to the first solution aspect, a pressing arrangement is provided for dewatering and / or smoothing a paper, board, tissue or other fibrous web for a machine for producing and / or finishing the same with at least one press nip formed by a roll and a counter roll. in which the axle of the roller is mounted on a first bearing block on at least one side of the pressing arrangement (driving or driving side) and the axis of the counter roller is mounted on a second bearing block separate from the first bearing block, wherein the two bearing blocks on at least one side over at least a connecting element extending between the bearing blocks is detachably connected to one another.

According to the first aspect of the invention, the connecting element has a first holding section and the first bearing block has a first recess, wherein the first recess is suitable for receiving the first holding section and has a first opening facing the second bearing block, through which the first holding section into the first recess into or out of this is feasible. According to the invention, at least one first strip is furthermore arranged in the first recess, which can be brought into the first recess from an assembly or disassembly position into an operating position and vice versa. In the operating position, the first bar is arranged in the recess in such a way that the first holding section is under tensile stress of the connecting element in the first Recess is held by this is supported on the at least one first bar. In the assembly or disassembly position, the first strip is arranged in the first recess such that the first holding section can be guided through the first opening into or out of the first recess.

According to the second aspect of the solution, a pressing arrangement is provided for dewatering and / or smoothing a paper, board, tissue or other fibrous web for a machine for producing and / or finishing the same with at least one press nip formed by a roll and a counter roll. in which the axle of the roller is mounted on a first bearing block on at least one side of the pressing arrangement (driving or driving side) and the axis of the counter roller is mounted on a second bearing block separate from the first bearing block, wherein the two bearing blocks on at least one side over at least a connecting element extending between the bearing blocks is detachably connected to one another.

According to the second aspect of the invention, the first bearing block has a first holding portion and the connecting element has a first recess with a first opening facing the first bearing block, wherein the first recess is suitable for receiving the first holding portion and the first holding portion through the first opening in the first Recess is feasible.

According to the invention, at least one first strip is furthermore arranged in the first recess, which can be brought into the first recess from an assembly or disassembly position into an operating position and vice versa. In the operating position, the first strip is arranged in the recess such that the first holding section is held in tensile stress of the connecting element in the first recess by this is supported on the at least one first bar. In the assembly or disassembly position, the first strip is arranged in the first recess such that the first holding section can be guided through the first opening into or out of the first recess. By the two solutions according to the invention, it is possible to automatically solve the two bearing blocks from each other or to connect with each other, since the at least one first bar in the first recess of an operating position in which the tensioned connecting element is held on the first bearing block - ie Connection between the connecting element and the first bearing block is manufactured- in a mounting or dismounting position can be brought, in which is released in the connection between the connecting element and the first bearing block and in which the first holding member through the first opening of the first Recess out or in the first recess is feasible.

As a result, according to the first aspect, the recess arranged in the first bearing block has a first opening facing the second bearing block, the connection element can be disassembled or disassembled when releasing or establishing the connection between the first bearing block and the connecting element in a second bearing block directed movement out of the first recess or be led into this. This must be in the Montagebzw. Disassembly of the connecting element does not move from the side in the cross-machine direction or the machine direction to the first bearing block or away from it.

As a result, according to the second aspect, the first recess arranged in the connecting element has a first opening facing the first bearing block, the connecting element can be disassembled or disassembled when loosening or establishing the connection between the first bearing block and the connecting element in a second bearing block directed movement out of the first recess or be led into this. As a result, during assembly or disassembly of the connecting element, this does not have to be guided from the side in the cross-machine direction or machine direction to the first bearing block or led away from it. Due to the alignment of the first opening according to the invention, a space-saving assembly or disassembly of the connecting element is therefore made possible.

It should be noted that the axis of the roller and the axis of the counter roller define a pressing plane.

Advantageous embodiments and further developments of the invention are specified in the subclaims.

Preferably, in the variant according to the first aspect of the invention, the at least one first strip arranged in the first recess is supported in the operating position under tensile stress of the connecting element on the first bearing block. According to the first aspect of the invention, the at least one first strip is arranged in the first recess of the first bearing block. Preferably, in the variant according to the second aspect of the invention, the at least one first strip arranged in the first recess is supported in the operating position under tensile stress of the connecting element on the connecting element. According to the second aspect of the invention, the at least one first strip is arranged in the first recess of the connecting element.

Concerning. The configuration of connecting element and bearing blocks are, for example, the following three variants possible:

According to a first possibility, the connecting element has the first and a second holding section. Furthermore, the first recess is provided in the first bearing block and a second recess in the second bearing block. Furthermore, the first recess arranged in the first bearing block has the first opening facing the second bearing block. Furthermore, the second recess arranged in the second bearing block has a second opening facing the first bearing block, through which the second holding section can be guided, in particular into or out of the second recess. In the state in which the two bearing blocks are connected to each other by the connecting element, the first holding portion in the first recess and the second holding portion in the second recess is arranged. In the state in which the connecting element is under tensile stress, the first holding section is supported via the at least one first strip in the region of the first recess on the first bearing block. Furthermore, the second holding section is supported indirectly or directly in the region of the second recess on the second bearing block.

In this case, the at least one connecting element is preferably a tension rod, which has a central shaft portion connecting the two holding portions with each other. Preferably, in this case, the two holding portions form the two end regions of the tension rod in its longitudinal extent.

In a second possibility, the connecting element has the first and a second recess. Further, in the first bearing block, the first holding portion and in the second bearing block, a second holding portion is provided. Furthermore, the first recess arranged in the connecting element has a first opening facing the first bearing block and the second recess arranged in the connecting element has a second opening facing the second bearing block, through which the second holding section can be guided into or out of the second recess. In the state in which the two bearing blocks are connected to each other by the connecting element, the first holding portion in the first recess and the second holding portion in the second recess is arranged. In the state in which the connecting element is under tensile stress, the first holding section is supported on the connecting element via the at least one first strip in the region of the first recess. Furthermore, the second holding portion is supported in the region of the second recess indirectly or directly on the connecting element.

The third option provides a hybrid of the above two options. According to the third possibility, the connecting element comprises the first recess and the second holding portion, wherein on the first bearing block, the first holding portion and the second bearing block, the second recess is formed and wherein the first and the second opening facing the first bearing block.

If the second recess is formed in the second bearing block, the second holding section can be supported indirectly or directly on the second bearing block in the region of the second recess during operation of the pressing arrangement.

If the second recess is formed in the connecting element, the second holding section can be supported indirectly or directly on the connecting element in the region of the second recess during operation of the pressing arrangement. With indirect support of the second holding section on the second bearing block or on the connecting element, at least one second strip can be arranged in the second recess between the second holding section and the second bearing block or between the second holding section and the connecting element.

The second strip may in this case be designed so that it can assume an operating and an assembly or disassembly position analogous to the first strip in the second recess. It is also conceivable, however, that the second strip in the second recess has only one position, namely the operating position, in which the second holding section is supported on the second bearing block or on the connecting element. In this case, it is conceivable, for example, for the insertion or removal of the second holding section into or out of the second recess that the at least one second strip must be removed from the second recess at least in the region of the second opening.

An embodiment of the invention provides that on the first holding portion a first contact surface and on the first bearing block or connecting element in the region of the first recess, a first support surface is formed and in the operating position of the at least one first bar under tensile stress of the connecting element, ie at power flow between the two bearing blocks, which is clamped at least a first strip between the first support surface and the first bearing surface. In this case, the first bar is essentially subjected to pressure. In this case, the first strip supports the first holding section on the contact surface and in this case supports itself against the supporting surface of the first bearing block. To be able to compensate, for example, due to temperature influences different length expansions of roller and counter roll or a bend of the axis of the roll and / or counter roll, it is particularly useful if the at least one connecting element on the first bearing block and optionally additionally articulated to the second bearing block and / or the at least one connecting element is bendable in such a way that the two bearing blocks in the pressing plane are movable relative to each other.

A further embodiment of the invention further provides that the two on one side, i. on leader or drive side, arranged the pressing assembly and opposite bearing blocks are each releasably connected to each other via a lying in the machine direction and via a lying in the machine direction behind the press plane connecting element. Preferably, a connecting element is arranged in front of and behind the press plane both on the driver's side and on the drive side of the press arrangement.

It should be noted in this context that each connecting element can be made in one or more parts. If a connecting element is designed in several parts, then this may, for example, consist of a plurality of mutually identical parts, which are arranged one behind the other in series, for example in the machine direction.

In order to enable mobility of the two bearing blocks relative to one another, in particular in the press plane, provides a further embodiment of the invention that by means of at least one first bar in conjunction with the first investment and / or the first support surface an articulated mounting of the at least one connecting element is mediated at the first bearing block. Here, in particular by the articulated mounting of the connecting element on the first bearing block, a mobility of the connecting element relative to the first bearing block set in only one plane of movement, the plane of motion is in particular aligned such that a movement of the two bearing blocks is possible relative to each other in the press plane me. The movement of the connecting element relative to the first bearing block is, in particular, a pivoting movement. The pivot axis of the pivoting movement is in this case determined in particular by the shape of the first bearing and first supporting surface and the two ends of the strip in contact with the strip in the plane of movement.

Preferably, the at least one connecting element extending between the first and the second bearing block extends in the plane of movement or parallel to it.

It is conceivable in this context that the plane of movement of the at least one connecting element is parallel to the press plane.

Preferably arranged by the on both sides, ie on drive and on the guide side, the press assembly connecting elements, which are considered in the machine direction behind the press plane, a rear connection plane defined. In this case, the plane of movement of these connecting elements defining the rear connection plane preferably lies in the rear connection plane. Furthermore, it is preferably determined by the connecting elements arranged on both sides, ie on the drive and on the driver's side, of the pressing arrangement, which are viewed in front of the press plane in machine direction, and define a front connecting plane. In this case, the plane of movement of these connecting elements defining the front connection plane preferably lies in the front connection plane. Alternatively or in addition to the movable mounting of the connecting element on the first and / or second bearing block, it may be useful that the arranged in the rear connection plane and designed as tension rods connecting elements in the rear connection plane are bendable. Furthermore, it may be useful for the connecting elements arranged in the front connection plane and designed as tension rods to be bendable in the front connection plane. The bendability here is in particular such that the bearing blocks are movable relative to each other in the press plane.

A specific embodiment of the invention provides that the first holding section is formed by a first shaft section and a first head which is widened against the first shaft section, the first bearing surface being formed in particular in the transition between the first shaft section and the first head. Preferably, viewed at least in the plane of movement, the first head is widened in relation to the first shaft section.

It is also conceivable that a second abutment surface is formed on the second holding section and in the region of the second recess on the second bearing block or on the connecting element and in the operating position of the at least one second strip at power flow between the two bearing blocks, the at least one second Ledge is clamped between the second support surface and the second abutment surface. In this case, the second bar is essentially subjected to pressure. In this case, the second strip supports the second holding section on the abutment surface and in this case supports itself against the supporting surface of the second bearing block.

Preferably, in this case, an articulated mounting of the connecting element on the second bearing block is effected by means of the second strip in conjunction with the second abutment and / or second support surface. Preferably, the connecting element on both bearing blocks, i. on the first bracket and the second bracket, hinged.

Preferably, it is further provided that the second holding portion is formed by a second shaft portion and a subsequent thereto and opposite the second shaft portion widened second head, wherein the second bearing surface is formed in particular in the transition between the second shaft portion and the second head. Preferably, the second head, viewed at least in the plane of movement, is widened in relation to the second shaft section.

In this connection, the transition between the first and second head and the first and second shaft section is preferably rounded in this regard in the movement plane. Preferably, the first strip forms a sliding bearing both with the first support surface and with the first contact surface. Furthermore, the second strip preferably forms a plain bearing both with the second support surface and with the second contact surface.

According to a further concrete embodiment of the invention, it is provided that the first recess has a first opening portion providing the first opening and a wider first receiving portion adjoining the first opening portion, wherein the first support surface is formed on the first bearing block in the region of the transition from the first opening portion to the first recording section. Preferably, the first opening portion, in particular in the direction of movement considered narrower than the first receiving portion.

This can be achieved, for example, in that, viewed in the plane of movement, the first bearing block has a greater wall thickness in the area of the first opening section than in the area of the first receiving section.

Furthermore, it may be provided that viewed in the plane of motion, the second recess has a second opening section providing the second opening and a second receiving section adjoining the second opening section, wherein the second support surface is formed on the second bearing block in the transition between the second opening section and the second receiving section. Preferably, the second opening portion, in particular in the direction of movement, is narrower than the second receiving portion.

In this connection, the transition between the first or second opening section and the first and second receiving section is preferably rounded in this respect in the plane of movement. For the formation of the abovementioned plain bearing, it is advantageous if viewed in the plane of movement the at least one first strip is rounded at its first side surface which can be brought into contact with the first contact surface and at its second side surface which can be brought into contact with the first support surface.

In this context, it may be advantageous, in particular for the power flow, if the at least one first strip has a circular segment-shaped cross-section and is rotatably mounted in a circular recess.

The recess should be part of the recess for receiving the head of the connecting element.

In order to realize a two-sided bearing, at least one strip should be arranged on both sides of the head of the connecting element with respect to the machine direction, wherein the axes of rotation of the strips may preferably run parallel or perpendicular to the machine direction.

For forming the abovementioned sliding bearing, it is furthermore advantageous if, viewed in the plane of movement, the at least one second strip is ablated on its first side surface which can be brought into contact with the second contact surface and on its second side surface which can be brought into contact with the second supporting surface.

To form a sliding bearing, the surface pairing contact surface / side surface and / or support surface / side surface in the contact region has the same radii. It is also conceivable to design the surface pairing contact surface / side surface and / or support surface / side surface as a roller bearing. In this case, the surface pairing in the contact region has unequal radii. The at least one first strip is preferably elongated in the plane of movement, for example oval. The at least one second strip can be viewed in the plane of movement, for example, be elongated or circular. If the at least one second strip, viewed in the plane of movement, is of circular design, then it can not be brought from an assembly or disassembly position into an operating position and vice versa.

The rounding of the ends of the strips and the contact and contact surfaces which can be brought into contact with them are hereby designed in particular in each case in complementary shape to one another.

The following section applies equally to the first and the second holding section, the at least one first or second bar and for the first or second recess:

It is conceivable that the holding section viewed in the plane of movement is in each case T-shaped. In this case, viewed in the plane of movement, the contact surface may preferably be formed at the two transitions from the shaft section to the head. Preferably, in this case, two strips are provided in the recess, which are arranged on both sides of the shaft portion viewed in the movement plane and act on both sides of the holding portion in the transition from the shaft portion to the head.

Preferably, the at least one first and / or second strip can be brought into the operating position and vice versa by means of a swivel movement from the m o n day e- or disassembly position. The pivoting movement of the first and / or second strip can in this case take place in the same plane as the already described movement of the connecting element relative to the first and / or second bearing block. This is the case in particular if the pivoting movement of the at least one first or second strip is determined by the plain bearing provided between the support surface and the second end.

To shorten maintenance times and to simplify the handling of the strips when loosening or establishing the connection between the first and the second bracket and the at least one connecting element is provided according to a further embodiment of the invention that the at least one first and / or second bar automatically from the assembly or disassembly position to the operating position u u u mg ekeh rt bring bar is. For automation of the pivoting movement of the at least one first strip, for example, a mechanism acting on the at least one first strip may be present. If a plurality of first strips are provided on a bearing block, the mechanism preferably acts on the plurality of first strips at the same time.

To automate the pivoting movement of the at least one second strip, for example, a mechanism acting on the at least one second strip may be present. If several second strips are provided on a bearing block, the mechanism preferably acts on the several second strips at the same time.

The mechanism can, for example, be operated by a pneumatic cylinder or hydraulic cylinder. It is conceivable that the mechanism comprises a linkage and / or a rack and pinion drive. To reduce the space required for disassembly and assembly, it may be useful if the recess of the second bearing block is designed such that the connecting element can be telescoped into the second recess or driven out of this. This means that according to this embodiment, in the state in which the connecting element is detached from the first bearing block, the connecting element can be telescoped into the second recess or moved out of it. Preferably, in this case, the second recess is designed so that it can accommodate most of the example. As a tie rod formed connecting element.

It should be noted that the possible amplitude of the pivoting movement of the connecting element relative to the first and / or second bearing block is also limited by the ratio of the size of the first or second opening to the width of the first and second shaft section.

Alternatively, it may also be advantageous if the recess of the second bearing block is designed such that the connecting element is movable by pivoting kbewegung or a superimposed pivotal and linear movement, preferably in a plane parallel to the machine direction into the second recess or out of this ,

The press arrangement according to the invention can be designed as a shoe press. In this case, the roller may have a stationary carrier and a roll shell which is rotatable relative thereto and which can be pressed against the counter-roller via a press shoe which is supported on the carrier. In this case, the axis of the roller is formed by the stationary carrier. Alternatively, the counter-roller may have a stationary carrier and a roll shell which is rotatable relative thereto and which can be pressed against the roller via a press shoe supporting the carrier. In this case, the axis of the backing roll is formed by the stationary support. The invention will be further explained with reference to schematic drawings. It show the

1 shows a first embodiment of a pressing arrangement according to the invention,

2-4 is a detail view of the pressing arrangement of Figure 1,

5 shows a second embodiment of a pressing arrangement according to the invention,

6 shows a third embodiment of a pressing arrangement according to the invention,

7 shows a fourth embodiment of a pressing arrangement according to the invention,

8 shows a fifth embodiment of a pressing arrangement according to the invention,

9 and 10, a sixth embodiment of a pressing arrangement according to the invention.

1 shows a possible embodiment of a pressing arrangement 1 according to the invention for dewatering and / or smoothing a paper, board, tissue or a second fibrous web for a machine for producing and / or finishing the same in a perspective view.

The press assembly 1 has a press nip 4 formed by a roll 2 and a counter roll 3. FIG. 1 shows the press assembly 1 from the leader side her what is described below for the driver's side applies analogously to the drive side of the press assembly 1.

The roller 2 has an axis 5. Furthermore, the counter roller 3 has an axis 6. The two axes 5, 6 define a pressing plane PE of the pressing arrangement 1. The ends of the two axes 5, 6 are mounted on bearing blocks 7, 8.

FIGS. 2-4 show a detailed view of the pressing arrangement of FIG. 1 in a section in the plane BE1. In the present case, the plane BE1 runs parallel to the printing plane PE.

The statements made for the level BE1 apply analogously to the level BE2 of FIG. 1.

Specifically, the axis 6 of the counter-roller 3 is mounted at its two ends in each case on a first bearing block 8. Furthermore, the axis 5 of the roller 2 is mounted at its two ends in each case on a second bearing block 7.

On both sides, i. on the driver and drive side, the two bearing blocks 7, 8 are connected via at least one between the bearing blocks 7, 8 extending connecting element 9 releasably connected to each other. In the present case, viewed in the machine direction MD, a connecting element 9 designed as a tension bar is arranged on each side in front of and behind the press plane PE.

The two tension rods 9 each have a first holding portion 10 and a second holding portion 11.

The recognizable in the figure 1 tension rod 9 on the driver's side and the unrecognizable tension rod on the drive side, which are viewed in the machine direction MD behind the press plane PE extend here in this case between the two bearing blocks 7, 8 in the plane BE1, which is also a provides a rear connection level. The recognizable in the figure 1 tension rod 9 on the driver's side and the unrecognizable tension rod on the drive side, which are viewed in the machine direction MD arranged in front of the press plane PE extend here in this case between the two bearing blocks 7, 8 in the plane BE2, which is also a provides front connection level.

The tie rods have a m ittleren Schaftabschn itt 1 2, the T he two holding portions 10 and 11 interconnects. In the present case, the first holding section 10 is formed by a first shaft section 13 and a first head 14, which is widened against the first shaft section 13 and adjoins this. In the present case, furthermore, the second holding section 11 is formed by a second shank section 15 and a second head 16, which is widened against the second shank section 15 and adjoins the latter.

As can be seen, the two holding portions 10, 1 1 considered in the plane BE a T-shaped cross-section.

Furthermore, the first bearing block 8 in the plane BE1 has a first recess 17, which is suitable for receiving a first holding portion 10 of one of the tension rods 9. The first recess 17 has a second bearing block 7 facing first opening 18, through which the first holding portion 10 in the first recess 17 in or out of this is feasible.

In addition, two first strips 19 are each arranged in the first recess 17.

The first two strips 19 are according to the invention in the first recess 17 from an assembly or disassembly position (shown in Figure 3) in an operating position (shown in Figure 2) and reversibly engageable. In the operating position, the first two strips 19 are arranged in the recess 17, that the first holding portion 10 is held in tensile stress of the connecting element in the first recess 17 by the first holding portion 10 to the supported two first strips 19. Here, the two first strips 19 are supported on the first bearing block 8 in the region of the first recess 17.

By contrast, in the assembly or disassembly position, the two first strips 19 are arranged in the first recess 17 such that the first holding section 10 can be guided through the first opening 18 into or out of the first recess 17.

As can be seen in FIG. 1, two second recesses 20 each having a second opening 21 are provided in the second bearing block 7. The two bearing blocks 7, 8 are connected to each other on the driver and on the drive side via two tension rods 9 by the first holding portion 10 is arranged in a first recess 17 and the second holding portion 11 in a second recess 20 at each pull rod 9, wherein the second holding portion 11 of the connecting element 9 can be guided via the second opening 21 into or out of the second recess 20. The two each associated with a pull rod 9 openings 18, 21 in this case each other.

In each first recess 17 two first strips 19 are arranged in each case. Further, in each second recess 20 each two second strips 22 are arranged.

In the present case, the two second strips 22 in the second recess 20 can be brought from an assembly or disassembly position into an operating position and vice versa. In the operating position, the two second strips 22 are positioned in the outer opening 20 in such a way that the second horizontal line is held in the second recess 20 by way of the tensile stress on the connecting element 9 , By the second holding portion 11 is supported on the two second strips 22. In this case, the two second strips 22 are each supported on the second bearing block 7 in the region of the second recess 20. In the present case, the first holding section 10 provides a contact surface 23. Further, a first support surface 24 is formed on the first bearing block 8 in the region of each first recess 17. As can be seen from the illustration of FIGS. 1 and 2, each of the first strips 19 in the operating position is clamped between the first support surface 24 and the first abutment surface 23 when there is a force flow between the two bearing blocks 7, 8.

As can be seen from the representation of FIGS. 1 and 2, the first contact surface 23 is provided by a rounded transition from the first head 14 to the first shaft section 13.

Furthermore, the first recess 17 has a first opening portion 25 providing the first opening 18 and a wider first receiving portion 26 adjoining the first opening portion 25, wherein the first support surface 24 is formed by a rounded transition between the first opening portion 25 and the first receiving portion 26 In the present case, this transition is realized by different wall thicknesses of the first bearing block 8 in the plane BE1.

In the present case, the second holding section 11 provides a second contact surface 27. Further, a second support surface 28 is formed on the second bearing block 7 in the region of each second recess 20. As can be seen from the representation of Figures 1 and 2, each of the second strips 22 is clamped in the operating position at power flow between the two bearing blocks 7, 8 between the second support surface 28 and the second abutment surface 27.

As can be seen from the illustration of FIGS. 1-4, the second contact surface 27 is provided by a rounded transition from the second head 16 to the second shaft section 17. Furthermore, the second recess 20 has a second opening section 29 providing the second opening 21 and a wider second receiving section 30 adjoining the second opening section 29, wherein the second support surface 28 is formed on the second bearing block 7 by a rounded transition between the second opening section 29 and the second receiving portion 30. In the present case, this transition is realized by different wall thicknesses of the second bearing block 7 in the plane BE1.

Due to the above-described formation of the transitions and the rounded shape of the strips 19, 22 form the strips 19, 22 with the respective contact surfaces 23, 27 and with the respective support surface 24, 28 slide bearing, through which the tie rods 9 relative to the first and second bearing block 8, 7 in the plane BE1, called in the future also movement plane, is movable.

In the present case, each tension rod 9 is articulated to the two bearing blocks 7, 8 in the plane of movement BE1, so that the two bearing blocks 7, 8 are movable relative to one another in the pressing plane PE parallel to the latter. As a result, for example, due to temperature effects different length expansions of roller 2 and counter-roller 3 can be compensated. Furthermore, this can compensate for a bending of the axes of the roll and / or counter roll.

The first and second strips 19, 22 are in the present case by means of a Schwen kbeweg u ng of the assembly or disassembly position in the operating position and vice versa brought. The pivotal movement of the first and second strips 19, 22 takes place here in the same plane BE as the already described movement of the connecting elements 9 relative to the bearing blocks 7, 8. This is therefore the case because the pivoting movement of the strips 19, 22 by the between the support surfaces 24, 28 and the ends of the strips 19, 22 provided slide bearing is set. As can also be seen from the representations of FIGS. 1-4, the second recess 20 arranged in the second bearing block 7 is formed deeper in the direction of the extent of the tension rod 9 than the first recess 17 arranged in the first bearing block Recess 20, it is possible that the tension rod 9 in the detached state of the first bearing block 8 telescopically driven into the second recess 20 into or out of this can be driven. By this measure, the space required during disassembly and assembly is reduced. In the present case, the second recess 20 is even designed so that it can accommodate most of the tension rod 9.

FIG. 5 shows a further embodiment of a pressing arrangement according to the invention in the sectional plane BE1 or BE2. In the following, only the differences from the embodiment of FIGS. 1-4 will be discussed.

The pressing arrangement has a first bearing block 32 with a first holding section 34, and a second bearing block 31 with a second holding section 35. The pressing arrangement further has a connecting element 33 with a first recess 36 and with a second recess 37.

The first recess 36 has a first opening 38 facing the first bearing block 32. The second recess 37 also has a second opening 39 facing the second bearing block 31.

In the first recess 36, two first strips 40 are arranged, which, as already described, can be moved from the assembly or disassembly position into the operating position and vice versa. Here, in the operating position, the first strips 40 are arranged in the first recess 36, that the first Halteabschn itt 34 is held at tensile stress of the connecting element 33 in the first recess 36 by this is supported on the two first strips 40. In the assembly or disassembly position, the first strips 40 are in the first recess 36 arranged that the first holding portion 34 can be guided through the first opening 38 into the first recess 36 or out of this.

Similarly, two second strips 41 are arranged in the second recess 37, which - as already described - in the second recess 37 of the assembly or disassembly position in the operating position and vice versa can be brought. Here, in the operating position, the second strips 41 are arranged in the second recess 37, that the second Halteabschn itt 35 is held in tensile stress of the connecting element 33 in the second recess 37 by this ieser on the two second strips 41 is supported. In the assembly or disassembly position, the second strips 41 are arranged in the second recess 37 such that the second holding section 35 can be guided through the second opening 39 into or out of the second recess 37.

FIG. 6 shows a further embodiment of a pressing arrangement according to the invention in the sectional plane BE1 or BE2. In the following, only the differences from the embodiment of FIGS. 1-4 will be discussed.

The pressing arrangement has a first bearing block 42 with a first recess 43, and a second bearing block 44 with a second holding section 45. The pressing arrangement further has a connection element 46 with a first holding section 47 and with a second recess 48.

The first recess 43 has a first opening 49 facing the second bearing block 44. The second recess 48 also has a second opening 50 facing the second bearing block 44.

In the first recess 43, two first strips 51 are arranged, which-as already described-can be brought into the operating position and vice versa, respectively, from the on-off position or disassembly position 43. In this case, in the operating position, the first strips 51 are in the first recess 43 arranged that the first Halteabschn itt 47 is held in tensile stress of the connecting element 46 in the first recess 43 by this is supported on the two first strips 51. In the assembly or disassembly position, the first strips 51 are arranged in the first recess 43 such that the first holding section 47 can be guided through the first opening 49 into or out of the first recess 43.

Similarly, in the second recess 48 two second strip 52 are arranged, which - as already described - in the second recess 48 of the assembly or disassembly position in the operating position and vice versa can be brought. Here, in the operating position, the second strips 52 are arranged in the second recess 48, that the second Halteabschn itt 45 is held at tensile stress of the connecting element 46 in the second recess 48 by this is supported on the two second strips 52. In the assembly or disassembly position, the second strips 52 are arranged in the second recess 48 such that the second holding section 45 can be guided through the second opening 50 into or out of the second recess 48.

In all the embodiments shown in FIGS. 1-6, the strips are elongated in the plane of movement BE1 or BE2.

FIG. 7 shows a further embodiment of a pressing arrangement according to the invention in the sectional plane BE1 or BE2. In the following, only the differences from the embodiment of FIGS. 1-4 will be discussed.

The pressing arrangement has the first bearing block 8 known from FIGS. 1 to 4 and a second bearing block 53 similar to that shown in FIGS. The connecting element 9 known from FIGS. 1-4 has the first and the second holding sections 10, 11. The first bearing block 8 has the first recesses 17. A second recess 53 is provided in the second bearing block 53. Furthermore, the first recess 17 arranged in the first bearing block 8 has the first opening 18 facing the second bearing block 53. The second recess 54 arranged in the second bearing block 53 has a second opening 56 facing the first bearing block 8, which is in the plane BE1 or BE2 considered significantly narrower than the first opening 18 is.

The second holding portion 11 of the pull rod 9 is supported in the operation of the pressing assembly via two strips 55 mediated on the second bearing block 53 from.

The pressing arrangement of Figure 7 differs substantially from that of Figures 1-4, characterized in that the second strips 55 in the plane BE1 or BE2 viewed as having a circular cross-section. The second strips 55 arranged in the second recess 54 thus have only one position, namely an operating position in which the second holding section 11 is held on the second bearing block 53 via the second strips 55.

In the embodiments described in Figures 1 -7, the respective holding portions are formed with a head in the plane BE1 or BE2 considered T-shaped.

FIG. 8 shows a further embodiment of a pressing arrangement according to the invention in the sectional plane BE1 or BE2. In contrast to the embodiments of Figures 1-7 are in the embodiment of Figure 8, the respective holding portions 57, 58 of the connecting element 59 in the plane BE1 or BE2 considered not T-shaped but L-shaped. For this reason, the two holding portions 57, 58 are each held only on a bar 60, 61 on the respective bearing block 63, 64. It should be noted that the first strip 61 in the first recess 66 is pivotable from an assembly or disassembly position to an operating position and vice versa, and that the second strip 60 in the second recess can assume only one operating position.

In contrast to the previously described embodiments, the strips 19 according to Figures 9 and 10 for fixing the flexible connecting element 9 here (pull rod) has a circular segment-shaped cross-section, wherein the center angle of the circle segment is greater than 180 °.

The strips 19 arranged on both sides of the connecting element 9 in the machine direction MD are rotatably mounted in circular recesses 67 of the bearing block 8 with a rotation axis 68 lying parallel to the machine direction MD. Both recesses 67 are part of a larger recess 17 in the bearing block 8 for receiving the head 14 of the connecting part 9 with its two-sided bearing surfaces 23 in the transition region between the head 14 and shaft portion 13th

In the operating position, the holding portion 23 is supported on tensile stress of the connecting element 9 on the circular lateral surface of the bar 19.

In the assembly or disassembly position, the strips 19 are pivoted in the recess 67 in such a way that the chord 69 of the circle segment of both strips 19 faces the connecting element 9. Idea lerwe ise runs the Seh ne 69 da be pa rula l to r assembly or disassembly of the connecting element 9. For this purpose, the distance between the opposite chords 69 is so large that the head 14 of the connecting element 9 passed easily can be.

After assembly of the connecting element 9, it is sufficient, as can be seen in FIG. 9, to swivel the strips 19 so that the holding section 23 of the connecting element 9 rests against the circular lateral surface of the strips 19, so that the connecting element 9 is sufficiently fixed. For this purpose, form the tendons 69 with the connecting element 9, in particular the pulling direction an acute angle. The recesses 67 act here as support surface 24 for the strips 19th

Claims

claims

1. Press arrangement for dewatering and / or smoothing a paper, cardboard, tissue or a second fibrous web for a machine for producing and / or finishing the same with at least one, formed by a roller and a backing roll press nip, wherein on at least one side of the

Press arrangement (leader or drive side) the axis of the roller on a first bearing block and the axis of the counter roller is mounted on a second bearing block separate from the first bearing block, wherein the two bearing blocks on at least one side via at least one extending between the bearing blocks connecting element releasably connected to one another and either i) the connecting element has a first holding section and the first bearing block has a first recess with a first opening facing the second bearing block, wherein the first recess is suitable for receiving the first holding section and the first holding section is through the first opening ii) the first bearing block has a first holding section and the connecting element has a first recess with a first opening facing the first bearing block, wherein the first recess is suitable for receiving the first holding section and the first holding section the first opening is guidable in the first recess, iii) wherein in the first recess at least a first strip is arranged, which can be brought in the first recess from a mounting or dismounting position to an operating position and vice versa, where iv) the first bar is arranged in the operating position in the recess in such a way that the one holding section is held in tensile stress of the connecting element in the first recess by this is supported on the at least one first bar and wherein v) the one bar in the assembly or disassembly position such is arranged in a recess that of a holding portion through the one

Opening can be inserted into or out of a recess.

2. Press arrangement according to claim 1, characterized in that the at least one first strip is supported in its operating position under tensile stress of the connecting element in the region of the first recess i) on the first bearing block or ii) on the connecting element.

3. Press arrangement according to claim 1 or 2, characterized in that the connecting element has the first and a second holding portion, wherein the first bearing block, the first recess with the first opening and the second bearing block has a second recess with a second opening through which the second holding portion into the second recess or out of this is feasible, wherein the first opening to the second

Bearing block and the second opening to the first bearing block has and wherein the second holding portion is supported in tensile stress of the connecting element directly or indirectly on the second bearing block in the region of the second recess.

4. Press arrangement according to claim 3, characterized in that the connecting element is a tension rod with one of the two

Holding portions interconnecting middle shaft portion.

5. Press arrangement according to claim 3 or 4, characterized in that a first bearing surface is formed on the first holding section and a first supporting surface is formed on the first bearing block in the region of the first recess and in the operating position of the at least one first strip

Force flow between the two bearing blocks which is clamped at least a first strip between the first support surface and the first bearing surface.

6. Press arrangement according to claim 5, characterized in that by means of the first bar in conjunction with the first abutment and / or first support surface an articulated mounting of the at least one connecting element on the first bearing block is mediated, in particular by the articulated mounting of the connecting element to the first bearing block is determined a mobility of the connecting element relative to the first bearing block in only one plane of movement.

7. Press arrangement according to claim 5 or 6, characterized in that the first strip forms a sliding bearing both with the first support surface and with the first contact surface.

8. Press arrangement according to one of the preceding claims, characterized in that the first holding portion is formed by a first shaft portion and an adjoining this opposite the first shaft portion widened first head.

9. Press arrangement according to one of claims 3-8, in that a second shank portion is formed by a second shank portion and a second head which is widened against the second shank portion and adjoins the shank portion.

10. Press arrangement according to claim 8 or 9, characterized in that the first abutment surface is formed in the transition between the shaft and the first head.

11. The pressing assembly according to claim 5, wherein the first recess has a first opening portion providing the first opening and a wider first receiving portion adjoining the first opening portion, wherein the first support surface is formed in the transition between the first

Opening portion and the first receiving portion.

12. The pressing arrangement according to claim 8, wherein the transition between the first head and the first shaft section is rounded and / or that the transition between the first shaft section and the first shaft section is rounded

Opening portion and the first receiving portion is rounded.

13. Press arrangement according to one of the preceding claims, characterized in that the at least one first strip abgrundet preferably at its first contact surface can be brought into contact with the first side surface and at its engageable with the first support surface in contact second side surface.

14. Press arrangement according to one of the preceding claims, characterized in that the at least one first strip has a circular segment-shaped cross-section and is rotatably mounted in a circular recess.

15. Press arrangement according to claim 14, characterized in that the recess is part of the recess for receiving the head of the

Connecting element is.

16. Press arrangement according to claim 14 or 15, characterized in that with respect to the machine direction on both sides of the head of the connecting element at least one bar is arranged, wherein the axes of rotation of the bar preferably parallel to the machine direction.

17. Press arrangement according to one of the preceding claims, characterized in that the axis of the roller and the axis of the counter roller lie in a press plane and the at least one connecting element on the first bearing block and optionally in addition to the second bearing block is articulated and / or at least one Connecting element is bendable, so that the two bearing blocks are movable relative to each other in the press plane.

18. Press arrangement according to one of the preceding claims, characterized in that the two bearing blocks opposite on one side of the pressing arrangement are in each case detachably connected to each other via a connecting element in front of and in front of the press plane in the machine direction.

19. Press arrangement according to one of the preceding claims, characterized in that the at least one first strip can be brought by means of a pivoting movement from the assembly or disassembly position into the operating position and vice versa.

20. Press arrangement according to one of the preceding claims, characterized in that the at least one first strip is automatically brought from the assembly or disassembly position into the operating position and vice versa.

21. Press arrangement according to one of the preceding claims, characterized in that the recess of the second bearing block is designed such that the connecting element is telescopically movable into or out of the second recess.

22. Press arrangement according to one of claims 1 to 20, in that a recess of the second bearing block is designed such that the connecting element by pivoting movement or a superimposed pivot and linear movement, preferably in a plane parallel to

Machine direction in the second recess into or out of this is mobile