EP0009057B1

EP0009057B1 - Casing battery for casting concrete building elements

Info

Publication number: EP0009057B1
Application number: EP19780200192
Authority: EP
Inventors: Jan Hendrikus Hinkema; Gerardus Albertus Hubertus Van Linder
Original assignee: Grootel's Bouwmaatschappij BV; Ballast Nedam Groep NV
Current assignee: Grootel's Bouwmaatschappij BV; Ballast Nedam NV
Priority date: 1978-09-14
Filing date: 1978-09-14
Publication date: 1982-01-06
Also published as: EP0009057A1; DE2861512D1

Description

The invention relates to a casing battery for casting concrete building elements comprising a sequence of mould walls arranged parallel to and" one behind the other and being displaceable in direction transverse of their plane relatively to one another and having on both sides a skin plate bounding a mould cavity, wherein every two opposite mould walls bounding the same mould cavity are interconnectable by means of a plurality of connection members distributed over the faces of the mould walls, extending through the mould cavity and holding the mould walls spaced apart.
Such a casing battery is known from British patent specification 1,106,542. The mould walls of this known casing battery have to be strong and rigid in order to ensure sufficient accuracy of dimensions with a building element of large size, resulting in that said mould walls are large and heavy. This known casing battery is not suitable for being transported from building place to building place.
The invention has for its object to provide a casing battery which requires a small amount of material and, therefore, has a low weight and which can be readily transported. This is achieved in that the casing battery is dismountable into transportable parts due to the fact that each mould wall is composed of a plurality of mould wall portions joined to one another in edge to edge relationship lying in a common plane and intercoupled by coupling means, each mould wall portion being constituted by a panel having a skin plate carrying stiffening profiles on the inner side and in that the coupling means also interconnect the opposite panels of the same mould wall, the opposite panels bounding two consecutive mould cavities. The transport of this casing battery is simplified particularly owing to the fact that the elements to be transported are not very large as a result of the composition of each mould wall by a plurality of mould wall portions and owing to the fact that, in addition, each mould wall and each portion thereof has a low weight. The division of. the mould wall, which basically detracts from the rigidity of the mould wall, is enabled owing to the use of said connection members, which provide a rigid sandwich construction built up from the panels extending in the one plane and the panels extending in the other plane.
A particularly simple and light-weight construction of the mould walls is obtained, when the coupling means are constituted mainly by girders extending between the opposite panels of the same mould wall. Said girders have a reinforcing effect and couple panels with one another both in the longitudinal and in the transverse directions.
A stable support, in which the mould wall is practically not subjected to bending or torsional forces, is obtained when the mould walls each bear on two carriages, each carriage having a V-shaped chassis supported by three wheels.
Owing to the division of the mould wall into a plurality of portions it is readily possible to prefabricate apart from flat, plate-shaped concrete building elements, also building elements having recesses and/or protuberances by using universally suitable parts in conjunction with a few additional recess gauges or in conjunction with a few specific mould wall portions. The mould cavity may be extended by an additional mould cavity recessed in the mould wall. Preferably at least one radiator of a hot water heating system is provided between the opposite panels of the same mould wall, said radiator being displaced on rails arranged in said mould wall.
It is noted that US patent specification 2,997,769 discloses a mould having only one mould cavity, which is bounded by mould walls, composed of a plurality of mould wall portions joining one another in the plane of the skin and intercoupled by coupling means. The coupling means of this prior art do not interconnect panels extending in different planes for providing a rigid sandwich construction.
The invention will be described more fully hereinafter with reference to a drawing.
In the drawing there is shown schematically

Figures 1 and 2 a casing battery according to the invention in two consecutive stages during the prefabrication of building elements,
Figure 3 a plan view of the casing of Figure 2,
Figures 4 and 5 each an enlarged sectional view taken on the line IV-IV of Figure 3 relating to two different mould walls.
Figure 6 an enlarged sectional view taken on the line VI-VI of Figure 3,
Figure 7 an enlarged sectional view taken on the line VII-VII of Figure 3,
Figure 8 an enlarged plan view of the supporting means of a mould wall,
Figure 9 an enlarged perspective view of detail IX of Figure 2,
Figure 10 an enlarged perspective view of detail X of Figure 2,
Figures 11 and 12 each a building element prefabricated by means of detail IX and X respectively,
Figures 13, 14 and 15 each a perspective view of a mould wall for a casing battery of Figure 1,
Figures 16, 17 and 18 each a fraction of a mould cavity associated with Figures 13, 14 and 15 respectively,
Figure 19 an elevational view in the direction of the arrows XIX in Figure 5,
Figure 20 a sectional view taken in the direction of the arrow XX in Figure 5, and
Figure 21 on an enlarged scale detail XXI of Figure 5.

The casing battery 1 shown in Figure 1 comprises a sequence of mould walls 2 arranged parallel to and one behind the other and being displaceable in the direction 6 transverse of their planes 7, whilst apart from the outermost mould walls 2 they have on both sides a skin plate 8 bounding a mould cavity 3. Each mould wall 2 is composed of a plurality of mould wall portions 9 joined to one another in edge to edge relationship and lying in a common plane (Figures 4, 5, 13, 14, 15) and intercoupled by coupling means. Referring to Figure 4, the mould wall portions 9 are formed by steel or plastics boxes filled out with stiffening material 13. in this way each mould wall portion 9 is constituted by two opposite panels each formed by a skin plate 8. Said panels are interconnected by means of profiled rims 12, said rims 12 meanwhile constituting stiffening profiles on the inner sides of said skin plates 8. These profiled rims also constitute the coupling means together with pull rods 10 and nuts 11, which firmly draw against one another the complimentary profiled rims 12 of contiguous mould wall portions 9.
Preferably, according to figure 5, the mould wall portions 9 each comprise a panel 14 having a skin plate 8, which is provided on the inner side with stiffening profiles 16 to which steel strips 17 are welded. The coupling means are mainly formed by girders 18, for example, channel-section beams extending between the opposite panels 14 of the same mould wall 2 and being connected by bolts 19 with the strips 17. As is shown in Figure 20, the panels 14 disposed in a first plane 7 bounding a mould cavity 3 as well as a plurality of panels 14 of the same mould wall 2 disposed in a plane 7 bounding a consecutive mould cavity 3 are interconnected by the same girders 18. The panels 14 of the two planes 7 are relatively off-set because the bolts 19 have to be readily accessible for mounting and dismounting operations. For this purpose the panels 14 in one plane 7 have, in order of succession, lengths of 1/2 1, 1, 1 and 1/2 1, whereas the panels 14 in the other plane 7 all have a length /. An upper layer of panels 14 is connected with a lower layer of panels 14 by means of channel-section profiles 22 extending at the joint 21 and being interconnected by bolts 23.
Each mould wall 2 is preferably supported by two carriages 24 (Figure 8) with a V-shaped chassis 25, which is supported by three wheels 26 running along three of the six rails 27 laid on the bottom side of the casing battery 1. Since the consecutive V-shaped chassis 25 fit one into the other the mould walls 2 can be disposed at a short distance from one another, whilst the support of the mould walls 2 is stable. Each mould wall 2 bears on a chassis 25 via connecting support beams 28, which are connected by bolts 29 with a channel-section profile 31 filled out with wood 30, which is provided on the bottom side of each panel 14 (see Figure 21 ). On the support beams 28 moreover, bears the edge 32 of a strip 33, which carries a bottom 34 of a mould cavity 3.
Figure 8 shows that each mould cavity 3 is bounded on the sides by a side plate 35 supported by a strip 36, which is secured to the ends of the mould walls 2.
Referring to Figure 6, the side plate 35 is drawn in sealing engagement against the bottom 34 by means of a wing bolt 37, which engages the strip 33.
When the casing battery 1 is transported, preferably into the proximity of a building site, the mould walls 2 are assembled and arranged in order of succession on the rails 27. During the prefabrication of building elements 5 a first mould wall-2a is fixed in place and shored up by cables or bars 39. Subsequently the required 'reinforcement 38 is disposed at its place in the mould cavity 3, after which conical spacers 41 are distributed along the plane 7 of the mould wall.2 and arranged on pull rods 42 extending across the mould- wall 2a. As is shown in Figure 7, each pull rod 42 passes through an aperture 43 of the skin plates 15 and through spacer sleeves 44, which hold the skin plates 15 in each mould wall 2 at a distance from one another and which are loosely accommodated in short bushings 45 welded to the skin plates 15. After the spacers 41 are disposed, the mould cavity 3 is closed by putting the next mould wall in its place, the side plates 35 and the bottom 34 being also put in place. In a similar manner the next mould cavities 3 are prepared, whilst the pull rods 42 are gradually shifted on. The whole casing battery 1 is complete after the pull rods 42 have been subjected to tensile stress by nuts 46. Thus the skin plates 15 are held in the flat state between their edges. As a matter of course, the edges of the mould walls 2 on the sides, the bottom side and the upper side are clamped tight at the required relative distances by means known and not completely shown. According to the invention an improved flatness of the mould walls 2 is obtained by the connection means extending through the mould cavities 3 and holding the mould walls 2 spaced apart and formed by the above-mentioned pull rods 42 provided with the nuts 46 and spacers 41, whilst preferably the skin plates 15 are supported also on the inner side by spacers, for example, sleeves 44.
It should be noted that the pull rods 42 may be arranged on only one level, for example, at 1.5 metres from the bottom 34 and with a relative pitch t of, for example, 125cms. However, as an alternative they may extend at several levels through the mould cavities 3 and, for example, also across the upper panels 14. The lower panels 14 have a length / of 250 cms and a height h of about 250 cms so that they can be satisfactorily stacked and transported. The upper panels 14 are appreciably smaller.
As is shown in Figure 9, each mould cavity 3 may hold a recess gauge 47 to form a building element 5 with a recess 48 as shown in Figure 11. Then vibrators 49 are provided on and below the recess gauges 47 in the mould walls 2 for filling up the mould cavities 3 beneath the recess gauges 47.
Likewise, as is shown in Figure 10, the mould cavity 3 may be extended by an additional mould cavity 52 recessed in the mould wall 2 to form a building element 5 with a protuberance 50.
The girders 18 may be employed, in addition, for suspending radiators 51 of a hot water heating system arranged between the panels 14 of the same mould wall 2 in order to accelerate curing of the concrete of the building elements 5 contained in the mould cavities 3.
The building eiements 5 may consist of concrete, reinforced concrete or light-weight reinforced or non-reinforced concrete, for example, concrete filled with expanded polystyrene grains.
Figures 13, 14 and 15 illustrate that several relatively different building elements 5 to be formed by mould walls 2 can be composed by joining a plurality of different panels 14 so that the same panels 14, can be used each time in conjunction with other panels 14 in several mould walls 2 to form different building elements 5 (Figures 16, 17 and 18).

Claims

1. A casing battery (1) for casting concrete building elements comprising a sequence of mould walls (2) arranged parallel to and one behind the other and being displaceable in a direction transverse of their plane relatively to one another and having on both sides a skin plate (8) bounding a mould cavity (3), wherein every two opposite mould walls (2) bounding the same mould cavity (3) are interconnectable by means of a plurality of connection members (41, 42) distributed over the faces of the mould walls (2), extending through the mould cavity (3) and holding the mould walls (2) spaced apart, characterized in that the casing battery (1) is dismountable into transportable parts due to the fact that each mould wall (2) is composed of a plurality of mould wall portions (9) joined to one another in edge to edge relationship and lying in a common plane and intercoupled by coupling means (10, 11, 12; 18, 19), each mould wall portion (9) being constituted by a panel (14) having a skin plate (8) carrying stiffening profiles (12, 16) on the inner side, and in that the coupling means (10, 11, 12; 18, 19) also interconnect the opposite panels (14) of the same mould wall (2), the opposite panels (14) bounding two consecutive mould cavities (3).

2. A casing battery (1) as claimed in claim 1, characterized in that the coupling means are mainly constituted by girders (18) extending between the opposite panels of the same mould wall (2).

3. A casing battery as claimed in claim 1 or 2, characterized in that the mould walls (2) each bear on two carriages (24), each carriage (24) having a V-shaped chassis (25) supported by three wheels (26).

4. A casing battery as claimed in any one of the preceding claims, characterized in that at least one mould cavity (3) is extended by an additional mould cavity (48) recessed in a mould wall (2).

5. A casing battery as claimed in any one of the preceding claims, characterized in that at least one radiator (51) of a hot water heating system is provided between the opposite panels of the same mould wall (2), said radiator being displacable on rails arranged in said mould wall (2).