• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a system for manufacturing concrete containers with a diameter within a predetermined diameter range, the system comprising: - a number of first formwork panels to be arranged in an inner ring shape; - a number of second formwork panels to be arranged in an outer ring shape; fixing panels for mutually fixing the first formwork panels and the second formwork panels to define a circumferential concrete pouring space between the formwork panels in which the concrete for the wall can be poured; wherein the formwork panels are substantially flat and are designed to jointly form an inner and outer polygon in the set-up condition and wherein the fixing means are adapted to attach panels of a holder of any diameter within said diameter range to each other.
    公开号:BE1018693A3
    申请号:E200700156
    申请日:2007-03-28
    公开日:2011-07-05
    发明作者:
    申请人:Oussoren Aales Adrianus Antonie；
    IPC主号:
    专利说明:

    SYSTEM AND METHOD FOR MANUFACTURING CONCRETE
    HOLDERS
    The present invention relates to a system and method for manufacturing containers, in particular storage tanks, with a curved, vertically arranged concrete wall. The invention also relates to a container obtained with such a system and / or method.
    Numerous types of concrete storage tanks are known in which various products such as general cargo, bulk goods, liquids, gases and the like can be stored. Most of these storage tanks are round or at least substantially cylindrical and are manufactured on site by pouring a concrete wall on top of a substrate, for example a concrete floor. When formulating concrete walls locally, a formwork must be set up. The formwork is made up of outer and inner formwork panels between which liquid concrete mortar can be poured. After the concrete has hardened, the outer and inner formwork panels can be removed.
    The poured concrete causes a large, outwardly directed force on the outer formwork, as a result of which the formwork plates of the outer formwork tend to move outwards. At the same time, an inwardly directed force is created on the inner formwork, so that this formwork tends to move inwards. In many cases, anchoring bars are used between the outer and inner shuttering panels to prevent movement. These are arranged between the wall formwork panels arranged opposite one another and ensure that the panels, despite increasing the pressure of the concrete during its liquid phase, maintain a fixed distance from each other.
    A drawback of the use of anchor rods is that after hardening of the concrete, lead-throughs are created in the concrete, which must be sealed separately. In particular for tanks for storing liquids, this requires extra time and attention and can sometimes lead to sealing problems.
    Although the use of anchor rods remains necessary in some cases, it is nevertheless advantageous to omit these rods as much as possible.
    To overcome this problem, a system has been developed in which no anchor rods or at least less rapidly anchor rods are required. In this known system an outer formwork is set up, wherein the formwork panels are anchored to each other in the horizontal direction such that they form a temporary tank wall on its own. This wall is able to withstand the pressure of the uncured concrete mortar. The outer formwork therefore has such a structural strength that it can in itself absorb the relatively large occurring ring pull. If the formwork that is set up is now evenly spiral-filled, in many cases the anchor rods can be dispensed with.
    An example of such a system is described in the patent application GB 1 446 512 in the name of Johann Wolf. In this system, the formwork panels are curved in accordance with a certain preferred diameter of the tank wall. As a result and due to the special mutual coupling of the outer panels and of the inner panels, an outer formwork or inner formwork of sufficient strength in the ring direction can be provided.
    However, a drawback of the known system, in particular when a larger preferred width is assumed, is that the panels thereof must have a predetermined curvature corresponding to the curvature required to achieve the desired tank diameter. With a wall with a greater curvature than that of the panels, a "scale" effect is obtained, which is aesthetically unacceptable. This means that for the manufacture of tanks of different diameters, several sets of different formwork panels are required. This means that a large number of different formwork panels must be kept in stock.
    Document DE 200 00 497 UI discloses a system for manufacturing concrete tanks of different diameters. The system is made up of formwork elements ("Schalungshautelemente") that are interconnected with closures. Identical closures are used for tanks of different diameters. However, the known system is of a type in which the outer skin of the formwork elements extends, but can be elastically deformed to enable the formwork elements to be positioned at a correct angle with respect to each other. The tensioning force required for this is supplied by the aforementioned closures. Such elastically deformable panels, however, are fragile and require a complex construction for producing the required tensioning force.
    The system known from the document EP 0 18 808 A2 has an inner ring of formwork elements and an outer ring of formwork elements, with a concrete dumping space between them. Neighboring formwork elements are hinged to each other with the aid of hinges in order to provide a round or polygonal tank. The formwork elements can be straight or curved. The interconnection of the formwork elements takes place with the aid of lips ("Laschen") provided with elongated coupling openings ("Kupplungslochungen"). The coupling openings extend in a circular arc, the center of the circle being at the axis of the hinges. The curved openings at least partially overlap. Insertions that are curved ("Steckteile") can be inserted into the overlapping openings. Depending on the angle between two neighboring formwork elements, the balls are pushed deeper or less deep into the openings.
    A drawback of the latter system is that the known panels must first be attached to each other by means of hinges, after which they can be pivoted at a correct angle, which lengthens the assembly and disassembly time and makes the system unnecessarily complex and expensive.
    It is an object of the present invention to provide an improved system and method in which at least one of the aforementioned drawbacks of the prior art has been overcome.
    According to a first aspect of the invention a system is provided for this purpose for manufacturing containers, in particular storage tanks, with a curved, vertically arranged wall and with a container diameter within a predetermined diameter range, the system comprising: - a number in an inner first rigid formwork panels to be arranged in ring form; - a number of second rigid formwork panels to be arranged in an outer ring shape; - fixing means for mutually fixing the first rigid formwork panels and the second rigid formwork panels to define a circular concrete dumping space between the formwork panels in which the concrete for the wall can be poured; wherein the formwork panels are substantially flat and are designed to jointly form an inner and outer polygon in the set up condition, and wherein the fixing means are adapted to attach the panels to each other for forming a holder of any diameter within said diameter range, wherein the fastening means comprise: - a number of protruding parts provided with at least one elongated straight opening, the straight openings of adjacent panels extending at an angle with respect to the diameter of the holder and the openings in the projecting portions are formed to at least partially overlap each other; - coupling units which are designed to be arranged in the passage defined by the overlapping openings for coupling neighboring formwork panels.
    In this embodiment the panels can be fastened to each other quickly and easily by arranging the coupling units in the passages of the projecting parts, for example by sliding these coupling units into the said passages. Because the neighboring panels are loosely placed on the substrate or on a bottom row of panels without having to establish a hinge connection, the panels can be mounted and dismantled quickly and easily. In addition, in the case of a number of rows of panels placed one above the other, lower panels can be easily dismantled, for example when the lower part of the concrete container is ready, so that these dismantled panels can be used elsewhere.
    The said straight openings are designed in such a way that they can overlap each other to a sufficient extent to allow passage of the coupling units regardless of the diameter of the container to be manufactured (at least within a predetermined diameter range, such as 10 m <diameter < M). This means that whatever diameter the container has within the predefined diameter range, the same panels and mounting means can be used to manufacture the container. This has created a universal system for manufacturing containers.
    The containers can be formed here by storage tanks, but also by silos, reservoirs, cellars or any other applications with vertically arranged wall constructions.
    The formwork panels are substantially flat and are suitable for a relatively large diameter range for the holders. In practice, the walls of concrete containers with an inner diameter of approximately 10 m up to an in principle unlimited maximum diameter can be manufactured with the same formwork panels, which considerably reduces the amount of formwork panels to be kept in stock. When the inner and outer casing panels are arranged in the two ring shapes, they form two separate polygons, the angle between two adjacent casing panels (and hence the angle between the lips of two adjacent casing panels) depending on the diameter of the container. With a large diameter, the angle will be around 180 while with smaller container diameters this angle is smaller. According to the invention, the fastening means are arranged such that the formwork panels can be universally coupled to each other, irrespective of the said angle.
    The fixing means are therefore preferably arranged for manufacturing different holders with a diameter varying within said diameter range, so that the same fixing means can be used for manufacturing holders of different diameter in a further preferred embodiment. This feature of the system according to the invention has a positive effect on the amount of fasteners of the system to be held in stock.
    The coupling units are preferably at least partially wedge-shaped. As a result, the same coupling units can be used with different dimensions of the said passages. With relatively small passages, the coupling units can only be slid slightly into the passages, while with relatively large passages, the coupling units can be pushed in further.
    In order to promote the stability of the construction, the projecting parts are arranged on the panels such that the projecting parts of the adjacent panels extend against each other or at least near each other. This counteracts the twisting of the coupling units, which benefits the stability of the system.
    The protruding parts provided with openings can take many forms. In a particular preferred embodiment, however, the protruding parts are formed by lips provided on the panels. In other embodiments, however, the protruding parts are formed by eyes or hooks provided on the panels.
    In order to ensure that the panels are positioned correctly in the vertical sense, i.e. in most cases in a height-aligned state, in a further embodiment the fixing means comprise one or more combinations of a single protruding part and a double projecting part, wherein the single projecting part of a panel is designed such that it can be fitted between a double projecting part of an adjacent panel. Applying the single protruding part between the double protruding part ensures correct height positioning.
    It is possible (in exceptional cases) to have one panel staggered vertically with respect to the other panel. The staggering takes place in small steps, for example in steps of 50 cm when the projecting parts are arranged on the panels at a distance of 50 cm in each case. This can occur if large pipes and the like have to be led through the wall. A fitting plate is then provided at the location of the open hole.
    In certain embodiments, the double and single projections are provided alternately on each of the longitudinal sides of the panel. In a further preferred embodiment, however, one longitudinal side is provided with double projecting parts, while the opposite end is provided with the single projecting parts.
    According to a further preferred embodiment, the angle (a) between the longitudinal direction of the openings and an imaginary line between successive panel connections is between approximately 3 and 10 degrees, even more preferably approximately 6 degrees.
    According to a further preferred embodiment, the fixing means are adapted to attach the neighboring panels to each other with an arbitrary spacing distance within a predetermined distance range. The spacing varies in practice between 1 and 50 mm. The gap makes it possible to place stabilizing elements, such as anchor rods or center rods, between the inner and outer panel for further stabilization of the formwork.
    According to a further embodiment, a part of the first formwork panels and a part of the second formwork panels are made from first and second standard panels, respectively, so that a further reduction of the required number of different panels can be realized.
    According to a further embodiment, at least one of the first formwork panels is made up of two panel parts with a hinge between them. The hinge is hereby arranged such that the width of the panel is adjustable. When the two ring forms of the formwork are built up and the concrete wall is cast, this makes it easier to remove the inner formwork from the inside of the container.
    Further advantages, features and details of the present invention will be elucidated with reference to the following description. Reference is made in the description to the accompanying figures, in which: figure 1 shows a perspective view of a preferred embodiment of a shuttering system according to the invention; figures 2 and 3: respectively a front and rear view of a preferred embodiment of an outer formwork panel; Figure 4 is a perspective view of an outer formwork panel according to the preferred embodiment; figure 5: a partly cut-away view of the preferred embodiment of figure 4; figure 6: a cross-section through two adjacent formwork panels of a tank with a diameter of 10 m, in the situation before positioning; figure 7: a cross-section through two adjacent formwork panels of a tank with a diameter of 10 m, in a situation after positioning; figure 8: the cross-section of figure 7, in which a coupling unit is arranged; figure 9 is a perspective view of two adjacent formwork panels of a tank with a diameter of 36 m, provided with anchor rods; figure 10: a cross-section through the two adjacent formwork panels of figure 9; figure 11: a top view of an outer and inner formwork wall, provided with a reinforcement frame; Figure 12 is a detailed view of the reinforcement frame; figure 13a: a perspective view of a further preferred embodiment of a panel, in folded-out condition; and figure 13b: a perspective view of the embodiment of figure 13a, in a collapsed state.
    Figure 1 shows a concrete storage tank 1 consisting of a concrete floor 3 and a cylindrical upright wall 2. The storage tank 1 can be covered with a roof or sail to protect its contents against external influences. A second cylindrical wall (not shown) can also be located concentrically within the tank, for example for placing equipment such as water purification equipment in the center of the storage tank.
    For the manufacture of the wall 2 (and / or of the aforementioned second wall) of such storage tanks 1, a preferred embodiment 4 of a formwork system according to the invention is shown in Figure 1. The formwork system 4 is composed of an outer formwork wall 5 and an inner formwork wall 6 placed concentrically therewith. The outer formwork wall 5 is made up of a number (about twenty, but this number may vary) of outer panels 8 and a corresponding number of inner panels 9 The formwork panels 8, 9 are interconnected with fastening means 10, the shape and construction of which will be described in detail later.
    Figure 1 shows a single series of formwork panels with which walls 2 of a predetermined height, for example approximately 1, 2 or 4 m height, can be manufactured. When higher walls are needed, a second inner and outer formwork can be mounted on top of the inner wall and outer formwork, and so on. Very high concrete tank walls can be manufactured in this way. For the sake of simplicity of description of the invention, however, the following will be based on a single row of formwork panels.
    The formwork panels are preferably made of steel and have a width of approximately 1.6 m and a height of approximately 2 m. Use of the panels of other dimensions is of course equally conceivable.
    Figures 2-8 show a preferred embodiment of the outer panels 8. The inner panels 9 have a similar construction and their manner of placement and coupling is, insofar as relevant to the invention, identical to that of the outer panels. Therefore, a separate description of the inner panels 9 has been omitted here. Figures 2 and 3 show respectively a front view and a rear view of the preferred embodiment of an outer panel 8. The outer panel 8 consists of a flat plate 12 against which a number of horizontal reinforcement ribs 11 are arranged. L-shaped longitudinal profiles 13 are provided on the upright sides of the plate. A single fastening lip 14 is provided on one of the longitudinal profiles 13 at a number of different heights. Double lips, i.e. an upper lip 16 and a lower lip 17, are provided on the opposite longitudinal profile at corresponding heights. The lips 14,16 and 17 are positioned at such heights that when two plates 8,8 'are placed side by side with the longitudinal profiles 13,13' against each other, the single lip 14 of the one plate 8 fits within the gap between the lips 16,17 of the other plate 8 '.
    Elongated openings or slotted holes 15, 18 and 19 are provided in each of the lips 14, 16 and 17, respectively. The shape and dimensions of the slotted holes 15, 18, 19 are designed such that in the condition shown in Figure 7, in which the plates 8, 8 'are placed against each other, the said openings partially overlap, so that the openings have a passage from above define downwards. This is shown in more detail in Figure 4 and in particular in Figure 5.
    Because the openings 15, 18, 19 partially overlap, a coupling element 20 can be placed in the passage. In the placed state, the coupling element 20 ensures a substantially rigid coupling between the plates 8,8 '. The coupling elements 20 are preferably wedge-shaped, that is to say that they have a relatively wide part 21 at one end and a relatively narrow part 22 at the other end, as shown in figure 5. This shape makes it possible to fitting coupling unit in different situations with different dimensions of the passage.
    Figure 6 shows, for example, the situation in which a tank is manufactured on the basis of twenty inner panels (each with a width of approximately 1.6 m). In the embodiment shown, the length of the slotted holes is approximately 7.5 cm, the width of the slotted holes of the inner panels is approximately 2.0 cm and the width of the slotted holes of the outer panels is approximately 1.7 cm. However, other dimensions are equally conceivable and fall within the reach of the skilled person.
    Once the panels 8,8 'are placed against each other, the slotted holes of the lips overlap such that a passage is created, as shown in Figure 7. It follows from the drawing that the length L outside of the outer passage is approximately 38 mm and the length L inside of the inner passage is approximately 69 mm. The angle (a) between the longitudinal direction of the openings and an imaginary line between successive panel connections of the inner panels and / or the outer panels is approximately 6 degrees. Other angles, preferably within a range of 3 and 10 degrees, are also conceivable, wherein said angle may be different for the outer panels than for the inner panels.
    In both cases, the plates 8,8 'and 9,9', respectively, can be coupled to each other by sliding a coupling element 20 of the same type into the said passages, wherein the coupling element 20 need to be pushed less far into the passages in the outer formwork are then in the passage in the inner formwork. In both cases, however, a single type of coupling element 20 will suffice, as shown in Figure 8.
    The same applies to the situation in which a different number is used instead of twenty inner panels, so as to manufacture a tank with a different wall diameter. Figure 9 shows, for example, a situation in which a wall is manufactured on the basis of seventy-two inner panels. The length Lbulten in the passage in the outer formwork 5 is approximately 22 mm, while the length inside of the passage in the inner wall 6 is approximately 32 mm. Both passages are therefore considerably smaller than the passages in the case of a wall based on twenty inner panels. In the situation shown in Figure 9, similar coupling elements 20 (in some cases with slightly smaller dimensions) can be used to couple the lips 14,16,17 to each other.
    In the embodiment shown in figures 9 and 10, the outer panels 8,8 'and the inner panels 9,9' are not placed tightly against each other, but a certain gap is provided between the sides of the panels. The spacing can vary between 1 mm and 50 mm (1 mm <t <50 mm) and is intended inter alia to provide space for arranging a number of anchoring rods 31 between the outer formwork 5 and inner formwork 6. These anchoring rods or anchor rods (center pins) 31 ensure a constant distance between the inner and outer formwork and thus have the function of providing the formwork with extra rigidity, in particular when manufacturing tank walls with a relatively large diameter (typically a container wall with a diameter larger than approximately 35 m).
    Figure 9 shows the construction for mounting the anchor rods in more detail. Figure 9 shows two outside panels 8,8 'arranged next to each other. An elongated intermediate element 32 is arranged between the longitudinal profiles 13, 13 'of the outer panels 8.8'. Intermediate element 32 is attached to the edges of the profiles 13, 13 '. The intermediate element 32 is provided with a number of holes into which the anchor rods or anchor rods 31 can be inserted. Similarly, an intermediate element is also arranged between the profiles of the inner panels 9, 9 '. Openings are also made in this intermediate element, at approximately the same height as the openings in the intermediate element 32. The anchor rods 31 shown consist of a sleeve 33 in which a steel rod 34 can be slid. Yokes are also provided which engage around the edges of the panels 8,9. The ends of the steel rod 34 are provided with wing nuts 35 resting on the said yokes, with which the rod 34 can be fixed tightly between the inner and outer formwork. Incidentally, countless variants of such anchor rods 31 are available and they all fall within the reach of the skilled person.
    Whether the panels are placed tightly against each other or whether a gap is provided, in all cases the plates can be coupled relative to each other by the same coupling units and without having to take additional measures. The shape and dimensions of the openings in the lips are chosen such that regardless of the diameter (within a predetermined diameter range) of the storage tank and hence the angle at which the panels extend relative to each other and regardless of whether or not there are anchor rods must be used, the panels can be connected to each other by the same means. This means an enormous simplification of the formwork and a corresponding reduction of the storage space required for the manufacture of tank walls of different diameters.
    The following can be used to manufacture the concrete wall of the storage tank, without using the anchor rods mentioned above. First of all, the outer panels 8 are arranged in a ring shape and coupled to each other with some leeway. By this is meant that the wedge-shaped coupling units or boughs 20 are arranged in the passages, but are not pressed, so that there is still some room for maneuver between the outer panels 8. The panels 9 of the inner formwork 6 are then placed at some distance from the outer formwork. After the inner formwork 6 has been placed, depending on the wall height, a scaffolding 25 is fitted on the inside thereof, as shown in figure 11. The reason for this is as follows. The outer formwork 5 is stressed due to the pressure of the concrete. The couplings described herein between the outer panels have such a great structural strength that they can absorb the tensile force to a sufficient extent. However, the inner panels of the inner formwork 6 are pressurized. In order to prevent the inner formwork 6 from collapsing under pressure, the reinforcement truss 25 is provided on the inside thereof.
    The truss 25 is mounted on the upper edge of the inner panels 9, 9 ', 9' = provided rods 26, as shown in Figure 12. Fixed length frame members 27 can be attached to rods 26. Telescopic extendable frame elements 28, 29 are also provided which can be attached to the aforementioned rods 26 and / or to the ends of the fixed-length frame elements, all as shown in Figure 12. By inserting and extending the elements 28,29, the frame elements rotatably attached to the inner formwork 6 can form a construction with which excessive pressure on the inner panels 9, 9 ', 9' of the inner formwork 6 can be absorbed.
    Once the outer formwork 5, the inner formwork 6 and the frame 25 have been fitted, a second row of outer formwork and inner formwork panels, including a reinforcement truss, can be arranged at the top, until the desired height is reached. Concrete is then poured into the space between the outer and inner formwork spirally from above. After the concrete has hardened, the formwork walls 5,6 can be removed again.
    To simplify removal on the inside of the tank wall, at least one panel per panel ring of the inner formwork 6 is designed as shown in figures 13a and 13b. The inner formwork panel 19 is herein provided with a standing hinge 40 and with fixing means 41, such as a construction of a slotted hole with pin. The fixing means 41 ensure that the panel 19 normally remains flat and can fulfill the same function as the other panels 9. Once the concrete has been poured and the inner formwork 6 has to be removed, the hinge 40 is unlocked by the fixing means and the panel 19 be collapsed. This reduces the width of the panel, so that it can easily be removed. Once such a panel 19 has been removed, it has become relatively easy to also remove the remaining panels 9 from the inner formwork.
    The present invention is not limited to the preferred embodiment thereof described herein. The rights sought are rather determined by the following claims, within the scope of which many modifications are conceivable.
    权利要求:
    Claims (23)
    [1]
    System for manufacturing a container, in particular a storage tank, with a vertically arranged concrete wall, with a diameter of the container within a predetermined diameter range, the system comprising: - a number of first to be arranged in an inner ring shape rigid formwork panels; - a number of second rigid formwork panels to be arranged in an outer ring shape; - fixing means for mutually fixing the first rigid formwork panels and the second rigid formwork panels to define a circular concrete dumping space between the formwork panels in which the concrete for the wall can be poured; wherein the formwork panels are substantially flat and are designed to jointly form an inner and outer polygon in the set up condition, and wherein the fixing means are adapted to attach the panels to each other for forming a holder of any diameter within said diameter range, characterized in that the fastening means comprise: - a number of projecting parts provided with at least one elongated straight opening, the straight openings of adjacent panels extending at an angle relative to each other with the diameter of the holder and the openings in the projecting portions are formed to at least partially overlap each other; - coupling units which are designed to be arranged in the passage defined by the overlapping openings for coupling neighboring formwork panels.
    [2]
    System as claimed in claim 1, wherein the fixing means are adapted to manufacture different holders with a variation of diameter to be realized by variation of the number of panels to be deployed within said diameter range.
    [3]
    3. System as claimed in claim 1 or 2, wherein the fixing means for manufacturing different containers with a different diameter from each other are identical.
    [4]
    The system according to any of the preceding claims, wherein the diameter range is between 10 m and 100 m.
    [5]
    A system according to any one of the preceding claims, wherein the curvature of the container wall is determined by a minimum of twenty panels.
    [6]
    System according to claim 5, wherein the openings are designed in such a way that they can overlap each other to a sufficient extent to allow passage of the coupling units regardless of the diameter of the container to be manufactured.
    [7]
    7. System as claimed in claim 6, wherein a coupling unit is at least partly wedge-shaped.
    [8]
    8. System as claimed in any of the foregoing claims 6-7, wherein the protruding parts are arranged on the panels such that the protruding parts of adjacent panels extend against each other or at least near each other.
    [9]
    9. System according to one of the preceding claims 6-8, wherein the protruding parts are formed by lips provided on the panels.
    [10]
    System as claimed in any of the claims 6-8, wherein the protruding parts are formed by hooks and / or eyes provided on the panels.
    [11]
    A system according to any of claims 3-10, wherein the fixing means comprise one or more combinations of a single protruding part and a double protruding part.
    [12]
    A system according to any one of the preceding claims, wherein a single protruding part of a first panel is arranged to be fitted appropriately between a double protruding part of a second, adjacent panel.
    [13]
    System as claimed in any of the foregoing claims, wherein only a few protruding parts are provided along a first side of a panel and only double protruding parts along an opposite side.
    [14]
    14. System as claimed in any of the foregoing claims, wherein the protruding parts extend horizontally.
    [15]
    A system according to any one of the preceding claims, wherein the protruding parts extend substantially in line with the panel.
    [16]
    A system according to any one of the preceding claims, wherein the angle (a) between the longitudinal direction of the openings and an imaginary line between successive panel connections is between approximately 3 and 10 degrees, preferably approximately 6 degrees.
    [17]
    17. System as claimed in any of the foregoing claims, wherein the fixing means are adapted to attach adjacent panels to each other at a random distance within a predetermined distance range.
    [18]
    18. System as claimed in claim 17, comprising a number of stabilizing elements arranged in said intermediate space and provided between the inner and outer panels.
    [19]
    A system according to any of the preceding claims, wherein a part of the first formwork panels and / or a part of the second formwork panels are made from respective first and second standard panels.
    [20]
    The system of any one of the preceding claims, wherein the panels are made of steel.
    [21]
    21. System as claimed in any of the foregoing claims, wherein one of the first formwork panels is made up of two panel parts with a hinge between them for adjusting the width thereof by pivoting.
    [22]
    22. System as claimed in any of the foregoing claims, wherein in the set-up condition neighboring panels are only attached to each other via the fixing means.
    [23]
    A container made with the system according to any of claims 1-22.
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    同族专利:
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    DE202007004737U1|2007-07-19|
    NL1031468C2|2007-10-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE1684485A1|1967-06-21|1971-03-18|Wolfgang Strauss Nachfolger Ho|Formwork for wall surfaces made of concrete or the like.|
    EP0218808A2|1985-10-16|1987-04-22|Josef Maier|Form for circular or polygonal buildings|
    DE20000497U1|2000-01-13|2000-05-04|Sundermann Gmbh & Co Kg Stahlb|Formwork element for the production of circular structures and containers made of concrete|
    CN101343955B|2008-08-13|2010-04-14|深圳市普新科技有限公司|Liner type concrete tank molding device|
    ITPD20110067A1|2011-03-02|2012-09-03|Faresin Building Division S P A|SAFETY STRUCTURE TO FORM CIRCULAR, ELLIPTICAL OR SIMILAR CYLINDRICAL WALLS|
    CN105133885B|2014-07-12|2017-07-07|施侃超|Minimal torque reaction force silo machine|
    CN106522631B|2016-12-15|2018-11-27|淮南矿业有限责任公司|A kind of coal bunker construction system and the method using the system|
    法律状态:
    2019-12-05| MM| Lapsed because of non-payment of the annual fee|Effective date: 20190331 |
    优先权:
    申请号 | 申请日 | 专利标题
    NL1031468|2006-03-30|
    NL1031468A|NL1031468C2|2006-03-30|2006-03-30|System and method for manufacturing concrete containers.|
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