EP3189907A1 - Device for making a cylindrical container with large diameter, in particular of a silo - Google Patents

Abstract

A device for producing a cylindrical container (10) with a large diameter (14), in particular a silo, from a wound on a reel (18) subsequently helically bent sheet metal strip (20) with a can be set up on the floor profiling device (30), one on floor-mountable rotary drive means (50), welding means (60) / folding means for welding or making a seam joint of an adjacent upper with a lower edge portion of the associated lower and upper sheet metal strip, a floor-mounted annular mounting frame spaced from its lower end along a helix circumferentially spaced support rollers on support posts for supporting the container (10) on the Kragflansch, characterized in that the reel (18) with the wound sheet metal strip (20) and the profiling device (30) outside the circumferential line of the cylindrical container ( 10) ang is arranged, so that the curved sheet metal strip (20) of the rotary drive device (50) / welding device (60) / folding device is supplied tangentially from the outside determined by the support rollers of the mounting frame helical path.

Description

TECHNICAL AREA

The present invention relates to a device for producing a cylindrical container with a large diameter, in particular a silo, from a coiled on a reel then helically bent metal strip with an erectable on the floor profiling, the one corresponding to the wall bending of the cylindrical container formed and staggered path has, which is supplied to the sheet metal strip and which forms a projecting flange on the upper edge region of the fed sheet metal strip or forms on the upper and lower edge region of the supplied sheet metal strip edge regions profiled, a floor-mounted rotary drive means, a welder / seaming device for welding or producing a Falzverbindung an adjacent upper with a lower edge region of the associated lower and upper sheet metal strip, an erectable on the ground annular mounting frame, the in Absta Support rollers spaced from its lower end along a helix are supported on support posts to support the container on the cantilever flange, the path of the profiler being adjacent to the path of the helix defined by the idlers, and the arrangement of the rotary drive means and the welder / folder the determined by the support rollers helical path coincides.

STATE OF THE ART

From spirally bent metal strip produced containers are from the DE 2 250 239 A or the EP 1 181 115 B1 known. To produce containers, a coil with a diameter corresponding to the container diameter is formed from a sheet metal strip. In the production of such a container, the mutually associated Wendelblechbandränder be first bent and then connected to the outside of the container by means of a fold fluid-tight with each other. For this purpose, the opposing longitudinal edges of the sheet metal strip are each U-shaped bent and the associated U-shaped bent sheet edges are placed inside each other and then connected by folding. This system is known on the market as a lip double seam system and proven in many ways. This lip double-seam system enables easy and fast production of containers of variable diameter and height. Transportable bending plate and mounting devices ensure that the container can be mounted at the respective place of installation and the transport volume can be correspondingly reduced.

From the DE 199 39 180 A1 It is known to produce a container such that a first edge portion is bent to form a helical extending Ausbiegekante to the outside and a second edge portion of the sheet metal strip adjacent thereto is bent outwards and then connected by a fold with a first edge portion.

For the previous applications of this container system, for example, for storage of bulk materials from agriculture and forestry or biowaste, the containers have excellent stability, tightness and media resistance. However, for other applications such as the storage of fluid media such as vegetable oils, petroleum or the like is a significantly larger container volume required, where the tightness must be reliably guaranteed. The associated increased mechanical stability of the container can not be sufficiently ensured by the known folding systems. In particular, the folding system reaches its limits with large sheet thicknesses.

In order to provide containers made of bent sheet metal strip helically, the range of applications is increased, in particular with respect to the implementation of a large storage volume and / or increased mechanical stability while ensuring a still simple and quick to manufacture or assembly, solutions have been developed, the folded seam by a Replace welded joint.

The WO 2014/048515 A1 discloses a container made of a helically bent sheet-metal strip of the type described above, wherein the edge portions of the heightwise one above the other extending adjacent edge regions of the sheet metal strip are connected to each other via a welded joint. In this case, the edge regions overlap and are fluid-tightly interconnected by two separate welds. Due to the existing spacing of the weld seams, in the overlapping region of adjacent edge regions of the sheet metal strip, a gap region arises between the overlapping walls, which can not be controlled in a simple manner after production of the container with regard to possible corrosion risks or the like.

In all known devices described above for producing a cylindrical container with a large Druchmesser, in particular a silo, the reel with the wound sheet metal strip and the profiling is arranged within the circular cylindrical circumferential line during assembly of the container, that is, the bent sheet metal strip from the inside of the Drive device / welder / folding device supplied. As a result, the loading of the reel with a new sheet-metal strip, which is required, for example, when relatively high containers are to create, that is, the assembled metal strip has a greater length, relatively expensive, since the sheet metal strip to be supported in the sum of a relatively high weight so that the reel can be loaded usually only with heavy lifting tool. In addition, the width of the insertable sheet metal strip is limited, since this sheet metal strip must be performed in the assembled state of the container between the bottom and the lower edge of the lower mounted sheet metal strip, wherein the distance to the ground is determined by the height of the support posts of the annular mounting frame and due to the high Load the support posts have a relatively low height. In addition, the application of the profiling after completion of the assembly of the wall of the container - consisting of the helically extending metal bands - relatively expensive, since the profiling must either be disassembled or lifted by a heavy lifting tool from above out of the container.

PRESENTATION OF THE INVENTION

Based on the cited prior art, the present invention has the object or the technical problem of providing a device for producing a cylindrical container of the type mentioned above, which simplifies the assembly - while maintaining the economic manufacturability on site by coiled metal strips - , which facilitates loading of the reel with new sheet metal strip and ensures easy assembly and disassembly of the profiling before assembly and after completion of assembly.

The device according to the invention is given by the features of independent claim 1.

Advantageous embodiments and further developments are the subject of claims dependent directly or indirectly from the independent claim 1.

The inventive device of the type mentioned for producing a cylindrical container with a large diameter, in particular a silo, is therefore characterized in that the reel is arranged with the wound sheet metal strip and the profiling outside the circumference of the cylindrical container, so that the curved sheet metal strip the rotary drive device / welding device / folding device is fed tangentially from the outside by the helical path determined by the support rollers of the mounting frame.

Due to the outside arrangement of the reel, a simple material feed of a new sheet-metal strip from the outside without the use of large lifting tools is easily possible. The dismantling of the heavy profiling after completion of the installation is relatively simple, since all components of the profiling are accessible from the outside. So when loading the reel with new sheet metal strip material is enough space available to set up the Blechbandcoil and threading the profiling. Also, the disassembly of the profiling need not be performed under tight Platzverhältnisn. Thus, for loading the reel with a Blechbandcoil and for mounting or dismounting of the profiling of a mobile light lifting tool, such as a forklift, easily possible.

A particularly preferred embodiment of the device according to the invention is characterized in that the distance of the reel and the distance of the profiling device in the range between 5% to 50%, in particular between 10% to 30%, of the diameter of the container.

An advantageous development, which has a compact structure and ensures a reliable precise molding of the edge region and the curvature of the sheet metal strip, is characterized in that the profiling has a plurality of successively arranged according to the radius of curvature of the sheet metal profiling, which the plastic molding process of / the edge regions / s of the sheet metal strip step by step.

A particularly preferred embodiment, which ensures a homogeneous, dense and permanently reliable function connection with high strength between the metal strips, characterized in that the welding device / folding device has a plurality of successively arranged according to the radius of curvature and the helical pitch of the metal strip welding stations / folding stations ,

In practice, it has proved to be advantageous with respect to the entire assembly process that the profiling device and the welding device / folding device are arranged substantially diametrically opposite one another.

A variant that ensures a reliable assembly process, especially in very heavy containers, is characterized in that Zusatzdrehantriebsaggregate are provided which are circumferentially arranged in a grid-shaped circumferential circumferential grid to support the rotational movement of the container during assembly, wherein the grid circumferential angle between the additional rotary drive devices according to an exemplary advantageous embodiment is 90 °.

In order to equalize the joining process between the edge regions of an upper and a lower sheet metal strip either by welding or folding, which improves the quality of the connection, a particularly advantageous development is characterized in that between the profiling and the Welding device / folding device, a control device is provided, which permanently detects the distance of the curved belt plate supplied to the circumferential line of the container and on exceeding an adjustable predetermined maximum value and falls below an adjustable predetermined minimum value, the rotary drive means for reducing or increasing the rotational speed of the sheet metal strip drives.

Further embodiments and advantages of the invention will become apparent from the features further listed in the claims as well as by the embodiments given below. The features of the claims may be combined in any manner as far as they are not obviously mutually exclusive.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1

schematische Seitenansicht eines Behälters mit einem wendelförmig gebogenen Blechband, der mit einer erfindungsgemäßen Vorrichtung hergestellt worden ist,

Fig. 2

schematischer Detaillängsquerschnitt durch die Wandung des Behälters gemäß Fig. 1,

Fig. 3

schematische Draufsicht auf eine Vorrichtung zum Herstellen des Behälters gemäß Fig. 1 und 2 aus einem wendelförmig gebogenen Blechband mit einer Haspel, einer Profiliereinrichtung, einer Steuereinrichtung, einer Drehantriebseinrichtung und einer Schweißeinrichtung, ohne Darstellung eines ringförmigen Montagerahmens,

Fig. 4a

schematische Draufsicht auf die Vorrichtung gemäß Fig. 3 mit zusätzlichen in Umfangsrichtung um 90° verteilt angeordneten Zusatzdrehantrieben,

Fig. 4b

schematische Ansichtsdarstellung der Zusatzdrehantriebe gemäß Fig. 4a,

Fig. 5

schematische Detailausschnittsdraufsicht auf eine Vorrichtung im Bereich der Drehantriebs- und Schweißeinrichtung mit zusätzlicher Darstellung des ringförmigen Montagerahmens mit Tragstützen und Tragrollen,

Fig. 6

stark schematisierte Detailquerschnittsdarstellung in Bereich der Drehantriebseinrichtung mit Führungsrollen und darüber angeordneter Höheneinstellstation mit Führungsrollen,

Fig. 7a bis d

schematischer Detailquerschnitt im Randbereich übereinander angeordneter Blechbänder, die im unterschiedlichen Höhenniveau angeordnet sind mit durchgehender beidseitiger Schweißung (Fig. 7a und b) und mit Schweißverbindung mit Überlappung (Fig. 7c und d),

Fig. 8

stark schematisierte Ansichtsdarstellung von Mitteln zum Einstellen der Höhenposition die über Gewindestangen und Gewindemuttern höhenmäßig einstellbare Führungsrollen aufweisen,

Fig. 9

stark schematisierte Ansichtsdarstellung von Mitteln zum Einstellen der Höhenposition die Führungsrollen aufweisen, die im Endbereich eines verstellbaren V-Hebelmechanismus angeordnet sind und

Fig. 10

ausschnittsweise in einer abgewickelten Ansicht und in einer ausschnittsweisen Draufsicht dargestelltes Ausführungsbeispiel eines ringförmigen Montagerahmens mit Tragstützen und Tragrollen.

The invention and advantageous embodiments and developments thereof are described in more detail below with reference to the examples shown in the drawing and explained. The features to be taken from the description and the drawing can be applied individually according to the invention or to a plurality of them in any desired combination. Show it:

Fig. 1

schematic side view of a container with a helically bent sheet-metal strip, which has been produced with a device according to the invention,

Fig. 2

schematic longitudinal section through the wall of the container according to Fig. 1 .

Fig. 3

schematic plan view of an apparatus for producing the container according to Fig. 1 and 2 from a helically bent sheet-metal strip with a reel, a profiling device, a control device, a Rotary drive device and a welding device, without showing an annular mounting frame,

Fig. 4a

schematic plan view of the device according to Fig. 3 with additional additional rotary drives distributed in the circumferential direction by 90 °,

Fig. 4b

schematic view of the additional rotary actuators according to Fig. 4a .

Fig. 5

schematic detail detail top view of a device in the area of the rotary drive and welding device with additional representation of the annular mounting frame with support posts and support rollers,

Fig. 6

highly schematized detail cross-sectional view in the area of the rotary drive device with guide rollers and arranged above height adjustment station with guide rollers,

Fig. 7a to d

schematic detail cross-section in the edge region of stacked metal strips, which are arranged at a different height level with continuous double-sided welding ( Fig. 7a and b ) and with welded connection with overlap ( Fig. 7c and d )

Fig. 8

highly schematized view representation of means for adjusting the height position of the threaded rods and threaded nuts height adjustable guide rollers,

Fig. 9

highly schematized view representation of means for adjusting the height position have the guide rollers, which are arranged in the end region of an adjustable V-lever mechanism and

Fig. 10

a detail of an unwound view and a partial plan view of an embodiment of an annular mounting frame with support posts and support rollers.

WAYS FOR CARRYING OUT THE INVENTION

The Fig. 1 shows a view of a container 10, as it can be used for storing bulk materials from agriculture and forestry, such as grain, wood chips or biowaste, as well as for storing water, sewage or sewage sludge or for storing gas or oil. The container 10 is on its outer side and its inner side substantially cylindrical, in particular circular cylindrical, formed with a vertically oriented longitudinal axis 12. The finished container 10 is mounted on a foundation 11 and covered on the upper side with a conical or frustoconical roof construction 68.

The preparation of the container 10 is carried out using a helically bent sheet-metal strip 20 preferably directly on the site of the container 10. The diameter 14 of the container 10 may for example be between 4 m and 50 m or more. The height 16 of the container 10 may be between 2 m and 40 m or more. The capacity of the container 10 may for example be between 15 m ³ and 10,000 m ³ . The preferably homogeneous thickness of the sheet metal strip 20 is between 2 mm and 10 mm. The width 17 of the sheet metal strip 20 may be between 20 cm and 100 cm, in the illustrated embodiment, the width 17 of the sheet metal strip 20 is about 50 cm.

In Fig. 2 is the detail A of Fig. 1 shown in the connection area. Shown is in each case the upper edge region 22 of a lower Sheet metal strip 20.1 and one in the vertical upper side adjacent upper sheet metal strip 20.2 with lower edge region 24 in the lower region of the container 10. Both metal bands 20.1, 20.2 are helically extending in a plane E, wherein the plane E represents the median plane of the container 10. The over this helically extending in the plane E metal strips are designated by the reference numeral 20. The metal strips 20.1, 20.2, 20 each have an outwardly curved edge portion 22 which forms a Kragflansch 28.

• Eine Haspel 18, auf der das Blechband 20 aufgewickelt und abziehbar vorhanden ist. Die Haspel 18 ist außerhalb (Abstand A1) der zylindrischen Ebene E des Behälters 10 angeordnet. Das von der Haspel 18 abgezogene Blechband 20 wird einer außerhalb (Abstand A2) des Behälters 10 angeordneten Profiliereinrichtung 30 zugeführt, die ebenfalls außerhalb der zylindrischen Ebene E beziehungsweise der Umfangslinie des Behälters 10 angeordnet ist und die aus mehreren in Umfangsrichtung hintereinander angeordneten Profilierstationen 32 besteht.

In Fig. 3 is a highly schematic representation of a device 100 for producing a formed as a silo container 10 from a curved curved extending sheet metal strip 20 is shown. The device 100 has the following essential components:

• A reel 18, on which the sheet metal strip 20 is wound and peelable present. The reel 18 is arranged outside (distance A1) of the cylindrical plane E of the container 10. The sheet metal strip 20 drawn off from the reel 18 is fed to a profiling device 30 arranged outside (distance A2) of the container 10, which is likewise arranged outside the cylindrical plane E or the circumferential line of the container 10 and which consists of a plurality of profiling stations 32 arranged one behind the other in the circumferential direction.

The inventive arrangement of the reel 18 outside the container 10 to be mounted, the material supply of a new Blechbandcoils designed particularly simple - in contrast to the known arrangement of the reel 18 inside the container 10 - as the reel 18, for example, by the use of mobile lighter lifting tools can be easily fitted with the new Blechbandcoil, for example, using a forklift. In the known devices, the material supply of a new Blechbandcoils from outside to inside was carried out by the free space, which is present between the lower wall portion of the lower sheet metal strip 20.1 and the ground. The height of this free area through which The new sheet metal coil can be spent in the interior is in Fig. 10 represented by reference AB. This distance AB runs helically in the circumferential direction in accordance with the helix of the sheet-metal strip 20.1, but has a relatively small size, since the support posts 36 with the carrying rollers 38 do not have too great a height due to the high load. As a result, the width 17 of the metal strip 20 to be processed is limited in size. The inventive arrangement of the profiling outside the container simplifies the installation or disassembly of the profiling, as there is enough space available and lightweight, mobile lifting tools can be used.

The Profilierstationen 32 have the task of the upper sheet edge portion of the supplied sheet metal strip 20 gradually plastically deform, so that after passing through the profiling device 30 in the upper edge region of the sheet metal strip an outwardly whitening Kragflansch 28 (see, for example Fig. 7a, b ) or alternatively adjacent to the formation of a Kragflansches 28 thereafter an outwardly offset to the plane E existing and downwardly extending overlap region 44 with the length Ü (see, for example Fig. 7c, d ) is formed.

Furthermore, a in Fig. 3 only highly schematic and dashed ring-shaped mounting frame 34 present in FIGS. 5 and 10 is shown schematically in more detail. The mounting frame 34 surrounds the cylindrical plane E of the container 10 is offset outwardly and circumferentially spaced support posts 36, each having a support roller 38, on which the lower edge of the Kragflansches 28 of the respective lower sheet metal strip 20.1 with each connected thereto metal strips 20.2, 20 is supported, wherein the support rollers 38 seen in the circumferential direction in a helical curved path (helix) are arranged. Between the support posts 38, which are bolted to the ground, a stiffening structure 39 with upper, lower chords, posts and diagonals is connected. The distance of the lower edge of the bottom sheet metal strip 20.1 from the bottom is designated AB. About this distance range can be reached during assembly in the interior of the container 10 or material pass through.

As in Fig. 5 shown on the first rotary drive station 52 and arranged on the last rotary drive station 52 height adjustment station 71 is clamped together by means of a clamping unit 76, wherein the clamping unit 76 is formed in the embodiment as a tension rod. This ensures a higher stability of the device 100.

After leaving the profiling device 30, the processed sheet metal strip 20.1 is fed to a rotary drive device 50 with downstream welding device 60, wherein the rotary drive device 50 has a plurality of circumferentially successively arranged rotary drive stations 52 and each rotary drive station 52 has an upper and lower guide roller 54, 56 on the outside between which the Kragflansch 28 is guided in the helical cam track, wherein in each case opposite a rotatable pressure roller 58 is present on the inside. Once the metal strip 20 reaches the rotary drive device 50, the metal strip 20 is helically extending in the cylindrical plane E and forms the wall of the container 10. By the rotary drive device 50, the metal strip 20 is rotated about the longitudinal axis 12 and travels helically upwards, so that the in Fig. 1 illustrated container 10 in the form of a silo results. At the same time in the area immediately after the rotary drive device 50 by the welding device 60, the upper edge portion 22 of the lower of the welding device 60 supplied sheet metal strip 20.1 with the lower edge portion 24 of the upper fed sheet metal strip 20.2 welded together. The welding takes place from the outside. In addition, a weld can also be attached from the inside. The structural design of the welded joint (s) is in the FIGS. 7a to d and will be described below.

The representation of the device 100 according to Fig. 4a corresponds essentially to the structure of the device according to Fig. 3 , Same components carry the same reference numerals and will not be explained again. Additionally are in Fig. 4a still additional rotary actuators 40 shown, which are arranged offset in the circumferential direction in a circumferential angle of 90 ° and each drive roller pairs 42 (see Fig. 4b ) between which the Kragflansch 28 of the respective lower sheet metal strip 20.1 is guided. This additional rotary actuators 40 allow easy production of containers 10 with very large weights. The auxiliary rotary drives 40 may be designed differently in height (see Fig. 4b ), wherein the drive roller pairs 42 are adjustable in their height position and are arranged simultaneously in the course of the helical path of Kragflansches 28 of the sheet metal strip 20.1.

In Fig. 3 and 4 between the profiling device 30 and the rotary drive device 50, a control device 80 is arranged on the outside, which detects the distance of the fed sheet metal strip 20 relative to the circular cylindrical plane E of the container 10 and when exceeding a predetermined maximum value 81 or falls below a predetermined minimum value 83, the drive units not shown the Profiliereinrichtung 30 and the rotary drive device 50 controls accordingly, so that a continuous positionally accurate feeding of the sheet metal strip 20 is ensured to the rotary drive device 50 and thus to the welding device 60 for producing a continuously homogeneous weld.

In Fig. 3 and in Fig. 6 are highly schematized means 70 for adjusting the height position of the upper sheet metal strip 20.2 and welded thereon existing further metal strips 20 relative to the lower fed sheet metal strip 20.1 shown. The height position of the lower fed sheet metal strip 20.1 in the region of the rotary drive device 50 and the rotary drive stations 52 is determined by the height position of the lower guide roller 56 in conjunction with the upper guide roller 54 fixed. The means 70 for adjusting the height position of the upper sheet metal strip 20.2 and thus also the above already welded together sheet metal strips 20 have in the illustrated embodiments, two height adjustment 71, which are arranged above the first and last rotary drive station 52. Each height adjustment station 71 has a lower guide roller 72 and an upper guide roller 74, wherein the Kragflansch 28 between the two guide rollers 72, 74 is guided. The two guide rollers 72, 74 are height adjustable (arrow H in Fig. 6 ) are present at the rotary drive station 52, so that the supplied upper sheet metal strip 20.2 can be positioned in terms of height with respect to its height position relative to the lower fed sheet metal strip 20.1. Embodiments relating to the positioning in connection with the formation of the weld are in the FIGS. 7a to d shown in more detail. Furthermore, each rotary drive station 52 is designed so that the respective height position of the lower guide roller 56 is adjustable relative to the upper guide roller 54, so that Kragflansche 28 can be performed with different cross-sectional thickness between the guide rollers 54, 56.

In the FIGS. 7a to d are different possible height positions of the upper sheet metal strip 20.2 shown relative to the lower sheet metal strip 20.1. In Fig. 7a In the upper edge region 22 of the lower sheet-metal strip 20.1, an outwardly pointing cantilever flange 28 has been formed by the profiling device 30, the height level of which is designated on the upper side by H2. The rectilinearly running lower edge region 24 of the upper sheet metal strip 20.2 has a height level H1 with its lower end edge, wherein the front outer edge of the end surface rests on the outside in the region of the curvature of the cantilever flange 28. The height level H1 differs from the height level H2 by the distance measure A. In this embodiment, the connection of the upper edge region 22 of the lower sheet metal strip 20.1 with the lower edge region 24 of the upper Sheet metal strip 20.2 via an inside weld 48 and an opposite outside weld 46 done.

In contrast to the representation according to Fig. 7a is the positioning of the upper sheet metal strip 20.2 relative to the lower sheet metal strip 20.1 in Fig. 7b spaced above (distance A1) set by the height adjustment station 71, so that the attachment of two welded through both sides welds 46,48 is possible with a larger weld thickness.

In the FIGS. 7c and d is a connection construction between upper and lower sheet-metal strip 20.1, 20.2 by means of an outer-side weld 48 (FIG. Fig. 7c ) and optionally additionally with an inside weld ( Fig. 7d ), in which an overlap region 44 or Ü is provided between the lower edge region 24 and the upper edge region 22. The overlapping region 44 of the upper edge region 22 of the lower sheet metal strip 20.1 is outwardly offset from the cylindrical plane E downwardly present to the outwardly facing Kragflansch 28, wherein the offset of the region 44 to the outside substantially corresponds to the sheet thickness of the sheet metal strip 20.2. The inner weld 46 is according to Fig. 7d arranged at the lower end of the overlap region 44. Depending on the height positioning H1 of the upper sheet metal strip 20.2 and corresponding formation of the overlapping region 44, Ü different overlap lengths are easily possible. The respective overlap length can be adjusted by appropriate positioning of the guide rollers 72, 74 of the Höheneinstellstationen 71 from case to case.

Fig. 8 shows a highly schematic of a first embodiment of means 70 for adjusting the height position of the upper sheet metal strip 20.2. The height adjustment station 71 has a schematically illustrated upper bearing unit 62 and a lower bearing unit 64, of which in each case the upper guide roller 74 and the lower guide roller 72 rotatably connected via an inclined axis of rotation 66 is. The upper bearing unit and lower bearing unit 62, 64 are connected via two continuous threaded rods 78 on the upper side of the rotary drive station 52, wherein each upper and lower side of the upper and lower bearing unit 62, 64 threaded rod nuts 79 are present. The height position of both guide rollers 72, 74 and thus the height position of the Kragflansches 28 of the upper sheet metal strip 20.2 (arrow H) and thus the height position H2 of the lower edge region 24 can be adjusted by appropriate rotation of the threaded rod nuts 79 absolutely. The relative position of both guide rollers 72, 74 to each other (arrow h) is also adjustable by corresponding rotation of the threaded rod nuts 79. The formation of a scissors construction is possible.

Another possible structural design of the Höheneinstellstation 71 is in Fig. 9 shown in a very schematic way. This station is designed as a V-shaped lever mechanism 82, wherein in the end region of the two levers respectively the lower guide roller 72 and the upper guide roller 74 is rotatably connected via the rotation axis 66 and the lever mechanism 82 as a whole in its height position (arrow H) is adjustable and the relative position of the upper guide roller to the lower guide roller (arrow h) is adjustable relative to each other.

In the exemplary embodiment illustrated above, a device 100 is described in which adjacent sheet metal strips 20 are connected to one another in their edge regions by the welding device 60. The inventive arrangement of the reel 18 and the profiling device 30 during assembly outside the container 10 is also possible in devices in which the connection of adjacent extending metal bands 20 is implemented by producing a rabbet joint. Here, a profiling is used, which profiled the upper and lower edge region of the supplied sheet-metal strip, wherein instead of the welding device, a folding device is used, which is the Falzverbindung continuously produces. Such a corresponding profiling with subsequent folding device is for example in DE-P S 22 50 239 or DE-P S 25 99 27 - However, with arranged within the container profiling - shown. However, the basic idea of the outside arrangement of the reel and profiling is possible in principle and without problems even with these devices.

Claims (8)

Device for producing a cylindrical container (10) with a large diameter (14), in particular a silo, from a wound on a reel (18) then helically bent sheet-metal strip (20) - A profiling device (30) which can be set up on the floor and has a path of correspondingly formed and offset running the wall of the cylindrical container (10), to which the sheet-metal strip (20) is fed and which to the upper edge region (22) of the fed sheet metal strip ( 20) forms a cantilever flange (28) or forms profiled edge regions on the upper and lower edge regions of the supplied metal strip, a floor-mounted rotary drive device (50), a welding device (60) / folding device for welding or producing a seam connection of a neighboring upper edge with a lower edge region (24, 22) of the associated lower and upper sheet-metal strip (20.1, 20.2), - An erectable on the ground annular mounting frame (34) spaced from its lower end along a helix circumferentially spaced support rollers (38) on support posts (36) for supporting the container (10) on the Kragflansch (28), wherein the path of the profiling device (30) is adjacent to the path of the helix determined by the carrying rollers (36) and the arrangement of the rotary drive device (50) and the welding device (60) / folding device coincides with the helical path determined by the carrier rollers (38), - characterized in that - The reel (18) with the wound sheet metal strip (20) and the profiling device (30) outside the circumferential line of the cylindrical container (10) is arranged so that the curved sheet metal strip (20) of the rotary drive device (50) / welding device (60) / Folding means tangentially fed by the support rollers (38) of the mounting frame (34) certain helical path from the outside. Device according to claim 1, - characterized in that - The distance (A1) of the reel (18) and the distance (A2) of the profiling device (30) in the range between 5% to 50%, in particular between 10% to 30%, of the diameter (14) of the container (10) , Apparatus according to claim 1 or 2, - characterized in that - The profiling device (30) a plurality of successively according to the radius of curvature of the sheet metal strip (20) arranged Profilierstationen (32), which perform the plastic molding process of / the edge regions / s of the sheet metal strip (20) gradually. Device according to one or more of the preceding claims, - characterized in that - The welding device (60) / folding device has a plurality of successively according to the radius of curvature and the helical pitch of the sheet metal strip (20) arranged welding stations / folding stations. Device according to one or more of the preceding claims, - characterized in that - The profiling device (30) and the welding device (60) / folding device are arranged substantially diametrically opposite. Device according to one or more of the preceding claims, - characterized in that - Additional rotary drive units (40) are present, which are circumferentially arranged in a grid-shaped in a predetermined grid circumferential angle (90) for supporting the rotational movement of the container (10) during assembly. Device according to claim 6, - characterized in that - The circumferential raster angle (90) between the additional rotary drive devices is 90 °. Device according to one or more of the preceding claims, - characterized in that - between the profiling device (30) and the welding device (60) / folding device, a control device (80) is provided which permanently detects the distance of the curved supplied sheet metal strip (20) to the peripheral line of the container (10) and when an adjustable predetermined maximum value is exceeded ( 81) and falls below an adjustable predetermined minimum value (83) controls the rotary drive means for reducing or increasing the rotational speed of the sheet-metal strip (20).

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