WO2011131435A1

WO2011131435A1 - Modular supporting frame

Info

Publication number: WO2011131435A1
Application number: PCT/EP2011/054294
Authority: WO
Inventors: Edward Blaut; Peter Jonen
Original assignee: Sms Siemag Ag
Priority date: 2010-04-22
Filing date: 2011-03-22
Publication date: 2011-10-27
Also published as: EP2560775A1; EP2560775B1; DE102010017924A1

Abstract

The invention relates to a modular supporting frame (2) and in particular a subassembly for a plant for casting and/or bending a metal strand, in particular for a curved mold continuous casting plant, the plant comprising a supporting frame (2) and the subassembly in turn comprising at least two segment supports (3) which form part of the supporting frame (2) of the plant and further comprising segments which can be connected to the segment supports (3) and which each comprise a roller assembly for guiding the metal strand. According to the invention, the segment supports (3) are designed such that said supports each support exactly one segment.

Description

Modular support frame

Field of the invention

The invention relates to an assembly for a plant for casting and / or bending a metal strand, in particular a Bogengießanlage, which comprises segment carrier of a support frame and corresponding segments with a roller assembly. Furthermore, the invention comprises a corresponding system.

PRIOR ART Various supporting frame constructions for continuous casting plants are known from the prior art, which are generally connected to a foundation. Furthermore, several segments are installed on these support frames or support frame parts, which in turn comprise a plurality of rollers or roller pairs between which a strand is passed. As a rule, the support frame consists of two to four support frame parts or segment supports, several segments being mounted on each part of the support frame.

The Auslegeschrift DE 24 57 302 shows, for example, such a casting plant, which is shown schematically in Figure 1. This Bogengießanlage 1 ', has a support frame 2', which is formed in two parts in the bend, wherein on each of the two Tragrahmenteile 3 'each three to four segments 4' or support segments 4 'together with rollers 5' are arranged. A disadvantage of such an arrangement is that, during operation of the system, the so-called "pass line" between the last segment 4 'of the first support frame part 3' and of the first segment 4 ', viewed in the casting direction, of the support element following in the casting direction. frame part 3 'may have a jump as a result of bending under the load and thermal expansions. This leads to a poorer quality of the cast and bent strand. To counteract this, although a significantly greater cost of materials could be operated in order to carry out the segment carrier accordingly strong, but this is uneconomical. At best, time-consuming and complicated adjustments are necessary.

To avoid this problem at least partially, there are other known types of installations in which the support frame is formed in two parts, for example, and the two adjacent parts of the support frame are connected by a segment, for example by a segment with a bolt connection both on the first Support frame part is fixed and is connected to other bolts with the adjacent support frame part, whereby the segment forms a bridge element or segment between the two parts of the support frame. Jumping changes in the "pass line" can thus often be avoided. A disadvantage of this embodiment, however, is that the support frame can expand undefined under the influence of heat. In particular, the known fixed / floating bearing principle is repealed by such a construction. For a brief definition of the term is under the fixed / floating bearing principle in this application to be understood that in a fixed / floating bearings on the one hand parts of the system are fixed, so that, for example, the radius of the pouring bow can not change, however, on the other hand parts of the support frame or can move the segments along and transversely to the casting direction, that is, can move when thermally expanded, thereby avoiding damage by these. This is no longer possible in the type of plant just described by the bridge segment. Possible consequences are cracks in the foundation of the supporting frame or problems with the installation or removal of the segments due to clamping bolt connections. Both variants described also bring with it the problem that the individual support frame parts are very large, since several segments are mounted on them. Thus, the corresponding support frame lengths of about eight to twelve meters, resulting in a correspondingly high weight results. This results in increased procurement, transport and assembly costs. In addition, large and expensive processing machines are needed for the difficult to obtain due to their size blanks.

Furthermore, in the prior art, on the one hand, adherence to the pass line and, on the other hand, the correct functioning of the system under the effect of heat are in contradiction to one another.

The technical task, which results from the prior art is to enable a more efficient casting or at least to solve one of the above-mentioned disadvantages.

Disclosure of the invention

The technical problem is solved by the assembly according to the invention for a system for casting and / or bending a metal strand, in particular a Bogengießanlage, the system comprises a support frame and the assembly in turn comprises at least two segment carrier, which form part of the support frame of the system and Segments, which are connectable to the segment carriers and each comprise a roller assembly for guiding the metal strand and the segment carrier of the assembly according to the invention are designed such that they each carry exactly one segment. By the assembly according to the invention several disadvantages of the prior art are overcome. The fact that the segment carriers are designed such that they carry only one segment or support segment, they are designed significantly lighter than the segment carrier from the prior art. Material procurement, production, transport and assembly are facilitated. Furthermore, it is possible with the proposed assembly, the segment carrier or support frame modules even easier to carry out, since the stiffness of a single segment now also contributes to the overall stiffness and strength of the segment carrier considered in the casting. In the prior art, the stiffness or the inherent rigidity of the segments could not contribute to the stability or rigidity of the segment carrier in the casting direction. Furthermore, the pass line can be maintained with the solution according to the invention, since the segment carriers seen in the casting direction can be formed comparatively short by carrying only one segment; As a result, the relocation of segment carriers and their influence on the pass-line is virtually eliminated.

In a preferred embodiment of the assembly, the assembly comprises at least two segment carriers, which are arranged adjacent to each other and connected to each other by at least one floating bearing. The fact that the length of the segment carrier is greatly reduced compared to the prior art, for example, to one to five meters, in particular less than two meters, and that the segment carriers are interconnected by floating bearings, in particular damage or stress under thermal expansion at the same time Compliance with the pass line minimized. Casting breaks are avoided. In addition, the segment carriers according to the invention are easier to adjust due to their smaller size.

In a further preferred embodiment of the assembly, the assembly comprises at least two segment carriers, which are arranged adjacent to each other and are mutually pivotable verbu NEN. The pivoting connection makes it particularly easy to adapt the segment carriers to different casting radii or to use them for systems with different casting radii. Possibly desired adjustments are facilitated. In a further preferred embodiment of the assembly, the assembly further comprises a foundation, wherein the segment carrier, in each case preferably rotatably mounted on the foundation, are fixedly mounted. The fact that a following segment is stored on the fixed in the foundation predecessor segment, the compliance with the pass-line is facilitated. In this case, the thermal expansion along and transversely to the casting direction is made possible by the loose positioning.

In a further preferred embodiment of the assembly, at least one of the segment carriers comprises at least four contact points for connection to one of the segments.

In a further preferred embodiment of the assembly, a first support points for fixed storage, a second support point to a displaceable mounting transversely to the casting direction and the remaining support points are formed into a displaceable mounting in all directions. In all directions, in particular in all directions, which lie in a plane which is spanned by the casting direction and the direction transverse to the casting direction. This type of storage of the segments on the segment carriers allows an even better compliance with the pass line and allows the simultaneous thermal expansion.

In a further preferred embodiment of the assembly, the segment carriers seen in the casting direction have substantially the same length as the respective segment carried by them. Substantially equal length of segment carrier and segment increases the rigidity of the system of these two elements.

In a further preferred embodiment of the assembly, at least two, preferably at least three, segment carriers are formed equivalently. The fact that a number of segment carriers have the same structure, manufacturing costs can be reduced. This modularization also increases the variability of such segment carriers or assemblies designed plant increased. In particular, the same parts can be used for repair, whereby the number of stored spare parts can be reduced. Although the two frame parts shown schematically in FIG. 1 look similar at first glance, they are constructed differently in reality. Furthermore, the bent frame parts shown in FIG. 1 can not be used in a vertical or horizontal section of a casting or bending installation. In such sections, according to the prior art, supporting frame parts having a different shape, in particular a different curvature, are necessary, so that many different types of supporting frame parts are present within a plant according to the prior art.

In a further preferred embodiment of the assembly, each segment carrier seen in the casting direction is mounted only at one point on the foundation.

In a further preferred embodiment of the assembly, at least one of the segment carriers is essentially formed by two longitudinal members, which preferably extend on both sides of the strand in the casting direction and which, viewed transversely to the casting direction, are connected to one another by transverse struts. Such a construction has both a high rigidity and a relatively low weight.

In a further preferred embodiment of the assembly, each of the longitudinal beams at one of its ends in the casting direction seen a connecting means and at its other end a region whose shape is substantially complementary to that of the connecting means, so that two in the casting direction successively arranged with segment carrier Help a connecting means of a first segment carrier with the complementary region of a second segment carrier, preferably stored, are connectable. This advantageous embodiment of the assembly according to the invention, the function of the assembly is further improved. In particular, the pass line better adhered to and retained the ability to expand when exposed to heat.

In a further preferred embodiment of the assembly, the connecting means is formed by a clevis. This connection means allows a particularly simple and secure connection of adjacent segment carriers.

Furthermore, the invention comprises a system for casting and / or bending a metal strand, in particular a Bogengießanlage comprising an assembly in one of the embodiments described above. The advantages of such a system essentially correspond to those of the previously described module.

In a preferred embodiment of the plant, this is designed such that the metal strand can be bent from a substantially vertical position into a substantially horizontal position. Furthermore, the system according to this embodiment comprises between five and nine juxtaposed and interconnected segment carrier for bending the strand in the horizontal position.

Brief description of the figures

The figures are briefly described below. Further details can be found in the detailed description of the embodiments. Show it:

1 shows a schematic longitudinal section through a Bogengießanlage according to the prior art; Figure 2 is a schematic longitudinal section through a support frame according to an embodiment of the invention; and Figure 3 is a schematic perspective view of a segment carrier of an assembly according to the invention.

Detailed description of the embodiments

Figure 2 shows a support frame 2, which is connectable in points 1 1 with a foundation. The support frame 2 consists of several segment carriers 3. The segments which are supported by the segment carrier 3 are not shown in FIG. The segments or support segments are formed as usual and known to the person skilled in the art, for example substantially like the segments 4 'of FIG. 1. The exact shape of the segments and the arrangement of the rollers within the segments are not in the focus of the invention. According to the invention, in each case one segment can be connected to a segment carrier 3. In other words, a segment is in each case supported by a segment carrier 3. The segment carriers 3 are preferably connected to one another in a separate manner and preferably, as seen in the casting direction, each connected to the foundation at a point 1 1. The segments are preferably fastened by bolts 12 to the individual segment carriers 3. However, the invention includes not only an entire system, but individual modules can each be combined consisting of segment carriers 3 or modules 3 and a segment to a support frame 2 a plant. It is also possible that existing systems can be extended by such modules or that existing frame parts can be replaced by an assembly. In particular, it is possible to design the complete system with only three or two types of carrier segment. By equivalent types of carrier segments or modules, the elements can also be used subsequently for other casting radii, which is not possible with larger, specific frame parts. For bending a strand from the vertical direction into the horizontal direction, preference is given to between five and eight nine Segmenttrager 3 used. In the horizontal part of the system further segment carrier 3 may be arranged.

Figure 3 shows an example of the detailed structure of a segment carrier 3. Preferably, a segment carrier 3 is formed by two longitudinal members 6, which extend in the casting direction. These longitudinal members 6 are preferably rigidly connected by connecting elements 7, in particular by struts, transversely to the casting direction. Furthermore, the segment carrier 3 of FIG. 3 comprises four support points 10 on which a segment together with its roller arrangement can be carried or stored. By bolt 12, the segment can be connected to the segment carrier 3 and secured on this. In this case, a first support point 10 is preferably designed for fixed storage, a second support point 10 is formed to a displaceable transversely to the casting direction storage and formed the remaining support points to a displaceable in all directions storage. How such types of bearings are formed per se is known to the person skilled in the art. In addition, the segment carrier 3 in the casting direction is preferably of the same length as the segment to be supported. Preferably, segment carrier 3 and the respective segment are connected to each other substantially at their corners. Furthermore, the segment carrier 3 preferably comprises a clevis 8 for connection to an adjacent segment carrier 3. In addition, the segment carrier 3 comprises at an opposite end a region 9 which is substantially complementary to the clevis 8 and with a clevis 8 of an adjacent one Carrier segment 3, preferably stored, is connectable. For the purpose of floating bearing, clevis 8 and / or the opposite complementary region 9 are designed accordingly. Instead of the clevis 8 but other forms of connecting means 8 are conceivable. Furthermore, the segment carrier 3 is preferably firmly but rotatably connected to the foundation. This type of storage is shown by the foundation storage 1 1. It should be made clear at this point that the individual features shown in FIG. 3 are not to be understood as restrictive. may be, but merely represent an example of the training of a segment carrier 3 according to the invention.

The features of the individual embodiments mentioned in the preceding description as well as the features which can be seen in the figures can be adapted by a person skilled in the art, with the aid of his specialist knowledge, to the requirements and conditions which are present in practice. In addition, features of the description can be combined with each other or even exchanged with each other.

LIST OF REFERENCE NUMBERS

1 ': curved caster

2: supporting frame

2 ': supporting frame

3: Segment carrier

3 ': segment carrier

4 ': segment

5 ': roles

6: side member

7: connecting element / strut

8: lanyard / fork head

9: Complementary area to clevis / connector

10: contact point

1 1: Foundation storage

12: bolts

Claims

claims

An assembly for a plant for casting and / or bending a metal strand, in particular for a Bogengießanlage, wherein the system comprises a support frame (2) and the assembly in turn comprises:

at least two segment carriers (3), which form part of the support frame (2) of the system; such as

Segments, which are connectable to the segment carriers (3) and each comprise a roller assembly for guiding the metal strand, characterized in that

the segment carriers (3) are designed such that they each carry exactly one segment.

The assembly according to claim 1, wherein the assembly comprises at least two in the casting direction adjacent segment carrier (3), which are interconnected by at least one floating bearing.

The assembly according to any one of the preceding claims, wherein the assembly comprises at least two in the casting direction adjacent segment carrier (3), which are pivotally connected to each other.

The assembly according to one of the preceding claims, wherein the assembly further comprises a foundation and the segment carrier (3), in each case on the foundation, preferably rotatably mounted (1 1).

5. The assembly according to any one of the preceding claims, wherein at least one of the segment carrier (3) comprises at least four support points (10) for connection to one of the segments.

6. The assembly of claim 5, wherein a first of the support points (10) is designed for fixed storage, a second support point (10) is formed to a transversely slidable to the casting direction storage and the remaining support points (10) to a displaceable in all directions storage are formed.

7. The assembly according to any one of the preceding claims, wherein each individual segment carrier (3), seen in the casting direction, has substantially the same length as the segment carried by it.

8. The assembly according to any one of the preceding claims, wherein at least two, preferably at least three, the segment carrier (3) are formed ä- equivalent.

9. The assembly according to any one of the preceding claims, wherein each segment carrier (3) seen in the casting direction is mounted only at a point (1 1) on the foundation.

10. The assembly according to any one of the preceding claims, wherein at least one of the segment carrier (3) is substantially formed by two longitudinal members (6) which extend, preferably on both longitudinal sides of the strand in the casting direction and which viewed transversely to the casting direction with each other by connecting elements (7) are connected.

1 1. The assembly according to claim 10, wherein each of the side rails (6) has a connection means (8) at one of its ends in the casting direction and at its other end has a portion (9) substantially complementary to that of the connection means (8) in that two segment carriers (3) arranged one behind the other in the casting direction are connected to the one by the connecting means (8) of a first segment carrier (3) complementary region (9) of a second segment carrier (3), preferably detached, are connectable.

The assembly of claim 1 1, wherein the connecting means (8) is substantially formed by a clevis (8).

A plant for casting and / or bending a metal strand, in particular a Bogengießanlage comprising an assembly according to any one of the preceding claims. The plant of claim 13, wherein the plant is configured such that the metal strand is bendable from a substantially vertical position to a substantially horizontal position and wherein the plant comprises between five and nine juxtaposed and interconnected segment beams (3) for bending of the strand into the horizontal position.