EP1520672B1 - Container concrete mixing plant - Google Patents

Abstract

A transportable concrete mixing station has a modular construction which can be broken down into small components which stack into standard containers. The containers themselves are used to form the main support frame of the station, either as silo frames or as closed modules e.g. for machinery rooms. Hatches provide access between containers, e.g. for conveyor belts. The packed station can be loaded onto standard transport vehicles, or onto ships.

Description

The present invention relates to a transportable concrete mixing plant, in which preferably all components can be transported in standard shipping containers, as defined in the preamble of claim 1.

Transportable concrete mixing plants are used by construction companies on construction sites whose concrete requirements can not be met in a meaningful way by transporting mixed concrete elsewhere (for example in stationary ready mixed concrete mixing plants), for example with the aid of the known concrete mixing vehicles. This case can be on large construction sites, eg. B. in the context of transport projects, occur in which the concrete needs are extremely high. A transport of concrete by means of concrete mixing vehicles can not be useful even in very remote sites, so that in this case a concrete mixing plant is needed on site.

For this reason, numerous construction companies have transportable concrete mixing plants, which are installed at a construction site for the production of concrete on site. Such concrete mixing plants are for this purpose formed of a plurality of detachably interconnectable mixing plant components, which individually, z. B. with the help of trucks, transported to the site and assembled there.

In this case, the problem often occurs that the mixing plant components such. As concrete mixers, cement silos, conveyor belts and the like, have functionally unusual dimensions, making their transport, for example on trucks, difficult. Often, special permits have to be applied for, which entails additional costs and Causes appointment problems. When transporting by cargo ship or freight train, as required by nationwide or even global construction companies, these unusual dimensions, widths and the like of the mixing plant components lead to considerable costs and delays in transport.

A concrete mixing plant according to the preamble of claim 1 is known from SE 440 879 B. A silo container for binders is placed on a horizontally oriented container containing a concrete mixer. The silo container for binders is oriented upright and stands with its lower end face on the horizontally oriented container. At its lower end, this silo container has in its inner volume area a funnel, via which the binder contained in the volume area above it is discharged in the direction of the concrete mixer positioned below. In an alternative embodiment of this known concrete mixing plant, a binder container is placed in a vertical orientation with its lower end face on a support frame. At its upper end, this support frame has a funnel in which the binder released from the edge-oriented binder container can be taken up and then forwarded to a conveyor.

WO 91/08882 discloses a containerized concrete mixing plant in which various system components of the concrete mixing plant are contained in containers. All containers are oriented horizontally, for example, when two horizontally oriented containers arranged one above the other serves as an upper container for receiving binder or other starting material for concrete production, while a horizontally oriented below arranged container is constructed in its upper part with a funnel, from the above container receives concrete starting material.

It is therefore an object of the invention to provide a transportable concrete mixing plant whose components can be transported faster and cheaper, without this means such. As packaging devices or wrapping materials to use that are not required for the actual operation of the concrete mixing plant and therefore would cause unnecessary costs and increased space at the site.

According to the invention this object is achieved by a transportable concrete mixing plant according to claim 1.

The invention has the advantage that the container containing the mixing plant components can be loaded quickly at loading stations of harbors, railway stations, etc., with the aid of cranes and the like provided there for this purpose. In addition, the transport of containers by means of cargo ships, freight trains, trucks and the like prepares no difficulties, so that a relatively rapid and inexpensive transport of the mixing plant components is possible even over long distances.

Next is provided in the concrete mixing plant according to the invention that it comprises binder silo container as a storage means for binders or the like, and possibly a corresponding silo container for concrete additive. Especially this use of a container as a binder silo means a great deal of simplification in the transport of a transportable concrete mixing plant, since conventional binder silos due to their size, and their usually characterized by a round cross-sectional shape difficulties in loading and transport.

The invention also has the advantage that the container to protect the mixing plant components during transport and also provide transport volume for sending additional equipment required when using the concrete mixing plant.

In addition, the use of containers in the operating state of the mixing plant as a support structure for mixing plant components or as a container for concrete raw materials, such. As supplements, binders, water, additives and additives, the advantage that no separate devices must be carried for this purpose. The containers can hereby be used both as an open support structure similar to a scaffold and as a closed support structure similar to a housing. This means a reduction in the transport effort and also always ensures the completeness of all components required to operate the concrete mixing plant.

In order to make the transport of the concrete mixing plant particularly simple, it is proposed that the containers are standard shipping containers or can be assembled into standard shipping containers, which can be uniformly transported to international standards, in particular by ship, train and truck. The transport of the concrete mixing plant can then be done with any container cargo ship, container freight train, etc., which allows a particularly fast and inexpensive transport.

In order to make easy use of the support structure or container function of the container, it is provided that at least some containers have hatches openable, through which mixing plant components, which are at least partially accommodated in the operating state of the mixing plant, can cooperate. After transport, the containers are first set up at the construction site at predetermined relative positions next to each other or one above the other, then the hatches are opened in the walls of the container and the mixing plant components contained in the respective containers possibly pulled out through the open hatches so that they can interact in the operating condition of the system. This offers the advantage that it is usually not necessary to highlight mixing plant components from their respective containers.

To realize a transportable concrete mixing plant according to the invention is proposed that it has at least one mixer-container containing at least one concrete mixer for mixing aggregates, preferably cementitious binder, water and additives and additives for the production of concrete and by cultivation of appropriate components can be expanded so that the performance is increased according to the requirements of the site, z. B. Extension from 1 up to 4 mixers with a corresponding increase in the number of silos, cans, conveyors, etc. As concrete mixers, to achieve high concrete production speeds in construction engineering, e.g. known double-shaft mixers are used, which are filled from the top with aggregates and binder and below have an optionally closable Bodenentleeröffnung for removal of concrete. The number of mixers per container is essentially limited by their space requirements and the permissible total weight of the container.

In this case, it is advantageously provided that the wall of the mixer container located above each mixer in the operating state has an openable hatch above each mixer. Through this hatch open in the operating state, the additives and the binder and, if necessary, additives are added to the concrete mixer.

In an advantageous further development of such a transportable concrete mixing plant is proposed that it comprises at least one arranged in the operating condition of the mixing plant on the mixer container mixer attachment container, the feed for introducing binder, preferably cement, and additives and possibly additives in each mixer through the openable hatches located in the upper wall of the mixer container and hatches openable in the bottom wall of the mixer attachment container through these hatches. These feeds could in the simplest case consist of a tube which opens through the open hatches from above into the concrete mixer.

Advantageously, however, it is provided that the feed means comprise for each mixer a Vorsilo for surcharges and a bag for binders and possibly for additives, which may each be formed approximately in a funnel shape.

For the exact dosage of the binder and optionally the additives, it is expedient that the bag contains a balance. Upon reaching a predetermined target amount, the bag releases its contents to the concrete mixer.

In an advantageous development of the invention, a through an open hatch in a wall of the mixer attachment container leading into this conveyor for introducing binder and optionally additive is provided in the mixer attachment container. This conveyor is in this case arranged such that its downstream end located in the conveying direction is above the pocket, so that the binder or the additive falls into the pocket at this end.

Since the subsidy usually runs at least partially outdoor, the subsidized by him binder or additive before Rain, wind, etc. are protected. For this reason, it is advantageously provided that the leading into the mixer attachment container funding is a screw conveyor. In such a screw conveyor, a worm drive rotates in a tube which protects the material from the aforementioned influences. If this protection is ensured by other measures, then the conveyor may possibly also be designed as a conveyor belt.

An effective supply of surcharges can be ensured in a development of the invention in that when using at least two mixers a surcharge conveyor is provided with optional reversible direction for supplying the surcharges to the respective mixer associated with a feed. The aggregate conveyor is hereby arranged such that each of its two ends is above a feed means. If the surcharges subsidies supplied to the supplements between its two ends, it can be supplied with supplements by selectively switching the direction of the aggregate conveyor each a feed.

In an efficient further development of such a concrete mixing plant according to the invention, it is provided that when using at least three mixers, the aggregate conveying means can be moved back and forth over the feeding means for the aggregates between several operating positions, in which each end of the aggregate conveying means is assigned to a feed additive is. Thus, for example, four in a row substantially equidistantly arranged mixer or their associated feed means are thereby supplied with surcharges that the aggregate funding between two operating positions is moved back and forth, and be used in each operating position both directions of the conveyor.

Since the aggregate conveyor extends substantially protected within the mixer attachment container, it is provided for the sake of simplicity that the aggregate conveyor is a conveyor belt.

Conveniently, in the transportable concrete mixing plant according to the invention, at least one wall of the mixer attachment container through an open hatch passing through steep conveyor for introducing the surcharges is provided in the mixer attachment container. This steep conveyor receives the surcharges substantially at the level of the footprint of the transportable concrete mixing plant according to the invention and promotes them to the above-described aggregate funding in standing on the mixer container mixer attachment container.

Since this aggregate conveying process requires a length of the steep conveyor, which may exceed the length of a standard shipping container, is provided in an advantageous development of the invention that the steep conveyor is a conveyor belt, which received during transport in the collapsed state in a steep conveyor belt container is. Such collapse of the steep conveyor belt can be achieved by a plurality of joints in a steep conveyor belt frame supporting the steep conveyor belt.

As explained above, it is expedient to use bottom-emptying mixers. In this case, it is provided that the lower operating state of the mixer container under each mixer has a hatch for the removal of concrete from the mixer container hatch. Thus, concrete can be removed from the mixer through the open hatch in the bottom wall of the mixer container.

This design is particularly advantageous when the mixer container is placed on a base of a mixer stand, which is dimensioned such that concrete through the openable hatches for removal of Concrete from the mixer-container in a provided under the floor truck or the like. Can be drained. When using more than one mixer, for example, in the embodiment of the concrete mixing plant according to the invention with four mixers shown later, it is also possible that two trucks are provided "back to back" under the standing surface of the mixer stand and are loaded simultaneously or immediately in succession with concrete ,

However, instead of using such a mixer scaffold, it is also possible that the mixer container is in the operating condition of the plant on a loading container, in the ceiling wall of the openable hatches of the bottom wall of the mixer container opposite openable hatches are provided. In this case, the concrete discharged from the mixer falls into the loading container and must be transported from there.

This onward transport can be ensured that an openable hatch is provided on an end wall of the loading container, of a fully contained in the loading container during transport concrete conveying device for conveying the concrete, for example, to a truck provided next to the loading container or the like , is interspersed. This concrete conveying device could be similar to the above-presented steep conveyor a collapsed during transport conveyor belt, which is stretched out for operation.

A simpler and more cost-effective design, however, is that the concrete conveyor comprises a fully concrete in the loading container recorded in the upper concrete collection belt and the openable hatch in the front wall of the loading container in operation by passing lower concrete conveyor belt. The concrete discharged from the mixer container thus initially falls onto the upper one at the end of the running below the lower concrete conveyor belt, which promotes him out of the loading container.

Appropriately, it is further provided that each binder silo or additive silo container is oriented upright on its face. This construction reduces the space requirement on the construction site and facilitates the removal of binder from the binder silo container.

For construction sites with large concrete needs is provided that at least two binder silo or additive silo containers are placed next to each other or each other. The conventional binder silos usually not given, but with the use of binder silo containers easily feasible way to stack such storage means for binders upright oriented allows the provision of a large binder supply in a small footprint on the site. If two binder silo containers are placed on top of each other, a continuous binder silo can be formed from them by opening hatches in the superimposed end walls.

To the known from conventional binder silos problem of tipping over a largely emptied silo, for example, strong Wind, to solve, is provided in the concrete mixing plant according to the invention, that each upright mounted binder silo or additive silo container for stabilization by means of cross struts on the mixer attachment container and / or attached to the mixer container and / or loading container or on the mixer frame is. This type of attachment causes a much greater stabilization of each binder silo container than the attachment usually used in conventional binder silos on the ground.

To provide a flat surface for the upright oriented silo containers and for their further stabilization, it is provided that each silo container not standing on a further silo container and the loading container or the mixer frame are fastened on a common base plate. This base plate may in the simplest case of an arrangement of carriers, for example, double T-beam made of steel.

For removal of the binder or additive from the silo containers, it is preferably provided that each silo container not located on another silo container contains a funnel in its lower operating state, the upper cross section of which essentially corresponds to the cross section of the silo container corresponds and tapers downwards.

The walls of this funnel may be formed obliquely away from the side walls of the silo container and downwardly extending to each other in operation, which are rigidly mounted in the silo container in this arrangement, or they may be transported on walls of the silo. Containers container and be unfolded in the operating state in the described working position.

For safety reasons, it may further be provided that each silo container not standing on another silo container has a concrete slab for stabilization on its end face located in the operating state at the bottom. Such a concrete slab is suitably fixed rigidly to the corresponding end face.

For removal of the binder or additive is further preferably provided that in the operating state under the funnel opening a binder or additive conveying means is arranged, which passes through a side wall of the silo container through an open hatch. This binder conveyor is conveniently stored in the silo container during transport and pulled out at the site through the open hatch.

Advantageously, it is also provided here that the binder or additive conveying means is a screw conveyor. In this way, the binder is also protected in this area of the concrete mixing plant according to the invention from the weather.

For the further transport of the binder or additive is provided that the binder or additive conveying means cooperates with a on an outer wall of the silo container substantially vertically or obliquely upwardly extending vertical conveyor such that it is this binder or additive for Forward conveying can pass, wherein advantageously also the vertical or inclined conveying means is a screw conveyor.

It is provided that the vertical or inclined conveyor cooperates with the partially running in the mixer attachment container binder or additive conveying means such that it passes this binder or additive for further conveying. Such transfer of binder from one auger to another auger This can ensure that the tubes surrounding the two screw conveyors have openings close to one another, between which runs a chute designed as a tube or a chute.

For the transport of the binder or of the additive from the silo to the mixer, instead of the three individual conveying means, only one conveying means, advantageously a conveying screw, can be used.

To facilitate the work on the concrete mixing plant according to the invention also ladders, safety railing and the like may be provided on the outside of the binder silo container, which are taken during transport in a, preferably this container.

To complete the equipment of the concrete mixing plant according to the invention it is provided that a concrete paver and / or a working platform or the like is received in a container, preferably a silo container during transport. In particular, in large concrete mixing plants according to the invention, in which empty binder silo containers are carried along during transport, such devices can easily be transported along. This also reduces the transport costs for these machines, especially in sea transport, as these machines can not otherwise be transported on container ships.

In a further development of the transportable concrete mixing plant according to the invention it is provided that it comprises at least one dosing unit container which contains a dosing device for dosing the additives. The metering of the aggregates takes place here in the metering unit container in coordination with the above-described metering of the binder or additive in the binder bag. A check and if necessary correction of the Such metered addition amount can be done via an additional balance in Vorsilo for surcharges in the mixer attachment container.

A simple design of such a metering device is possible if the metering device for aggregates has at least one cradle conveyor belt for weighing and transporting the aggregates and at least one feeding device associated with the cradle conveyor belt. Such cradle conveyor belts for simultaneously weighing and transporting a material are known per se and will not be further described here.

In order to enable a reliable and rapid supply of aggregates through the feed to the cradle conveyor, it is contemplated that each feed means is formed by a hopper located above the cradle conveyor which tapers downwardly and upwardly to an openable hatch opens wide in the operating state upper side wall of the dosing unit container. In this way, surcharges can be introduced, for example, by a wheel loader in the upper opening of the hopper, without having to pay attention to special precision in this filling.

It is possible to fill in each hopper only aggregates of a certain grain size. These various aggregates can then be drained successively onto the weighing conveyor belt which weighs the aggregates of each group of granules and ensures their metering in a predetermined ratio. But it is also possible to make the desired mixture of aggregates with different grain groups outside the dosing unit container and to fill this mixture in each hopper of the dosing unit container.

A further simplification of this filling and the possibility of simultaneous filling with multiple wheel loaders is given, if any Dosing unit container is associated with a dosing essay container with substantially the same length, the halves of which are placed side by side parallel to the dosing unit container in the operating state on this and using a baffle device and openable hatches in the upper side wall of the dosing unit container and in the Lower side wall of each half of the dosing tower container to increase the effective upper cross section of each funnel in the dosing unit container.

In this embodiment, it is preferably provided that the baffle means fixed, arranged in the dosing attachment container, obliquely extending baffles extend the walls of each funnel in the dosing unit container in the operating state up into the halves of the dosing attachment container into it. By means of this measure, the upper filling cross-section of each funnel in the dosing unit container can be approximately doubled compared to a design without a dosing attachment container.

A further enlargement of the upper Einfüllquerschnitts each funnel can be achieved if the baffle plate further comprises baffles which are rotatably mounted substantially at corners of the halves of the dosing attachment container and are folded in the operating state of the Dosieraufsatz container that they the funnel opening after zoom in. Overall, this can reach an upper filling cross-section, which allows the simultaneous filling of the metering device for surcharges with multiple wheel loaders.

In order to convey the metered and transported with the help of the cradle conveyor aggregates, the invention provides that in the dosing unit container further under the cradle conveyor parallel to this extending, in the longitudinal direction through an openable hatch in an end face of the dosing unit container partially off the dosing unit container displaceable task-funding is provided. This Task conveyor is completely absorbed in the dosing unit container during transport and is pulled out for operation through the open hatch in the end face of the dosing unit container.

For the reasons already mentioned above for surcharges, the task conveyor can also be a conveyor belt here.

For further transport of aggregates, it is preferably provided according to the invention that the end of the feed conveyor located in the operating state outside the metering unit container is arranged above the steep conveyor for the supply of aggregates to the mixer top container. The surcharges thus fall on the outside of the dosing unit container located at the end of the task-funding to the above-described Steilfördermitel. In order to avoid a "falling over" of surcharges to a large extent, a funnel can be arranged at the lower end of the steep conveyor.

In a further development of the invention, the transportable concrete mixing plant may additionally comprise an additive container for receiving concrete additives. The choice of such additives depends, as known in construction technology, according to the intended use of the concrete to be produced.

In a further development of the transportable concrete mixing plant according to the invention it is provided that it additionally comprises a control station container in which a control station for controlling the components of the concrete mixing plant is housed. Such control stations for substantially computer-aided monitoring and control of concrete mixing plants are known in construction technology and will not be further explained here.

Furthermore, the concrete mixing plant according to the invention may additionally comprise a water container for receiving the water required for the production of concrete or a container receiving water and / or concrete admixture.

The transportable concrete mixing plant according to the invention can by cover, insulation, foreclosure, heating or heating (with hot air, superheated steam, heating coils, etc.) of the individual mixing plant components (in particular the mixer container including mixer attachment container, conveyor belts, dosing unit container, Zusatzmittel- and water containers including delivery lines) allow mixed operation even at ambient temperatures below zero degrees Celsius.

In a further development of the transportable concrete mixing plant according to the invention can be provided that it has a pressure conveying device, preferably compressed air conveying device, for pressure conveying from at least one silo container. Such a pressure conveying device is particularly advantageous if other conveying devices, such as screw conveyors, are exposed to high wear and / or a high risk of clogging due to the particular operating conditions, for example due to the selected binder or additive. The principle of pressure promotion of such substances is known per se and can also be used for filling of binders or additives in a silo container.

In an advantageous embodiment of such a pressure conveying device is provided that it comprises a collecting vessel with a compressor and a delivery hose connected to the collecting vessel. Of course, these components of the pressure conveying device can be accommodated during transport in a container. In principle, it is possible in this construction to convey binders or additives through the delivery hose directly to a binder bag in a mixer attachment container. However, since the pressure promotion of such substances in a binder bag could distort the taking place in their weighing of the substance, it is advantageously provided that the concrete mixing plant according to the invention has at least one binder intermediate container for intermediate storage of binder, which is preferably placed on at least one mixer attachment container expediently the delivery hose opens into the at least one binding agent intermediate container. In this case, such, mounted on a mixer attachment container binder intermediate container also hatches, through which the delivery hose in the operating state of the transportable concrete mixing plant according to the invention opens into it, or through which the material conveyed in a mixer associated binder bag are supplied can.

Preferably, this supply is such that the at least one binder intermediate container contains a funnel, which opens into a rotary valve, which is arranged above a binder bag in a mixer attachment container. Such a rotary valve functions similar to a revolving door provided in buildings and allows the supply of binder or additive in the binder bag without pressurization by the pressure conveying device. Such rotary valves are known per se in the art and will therefore not be explained in detail.

In a particularly space-saving embodiment of the invention it is provided that the collecting vessel and the compressor are arranged in the lower region of the silo container. Here, the collection vessel can be permanently installed in the respective silo container, while the compressor and the delivery hose in the transport state of the concrete mixing plant in the same or be transported in another container. However, it is also possible to arrange the collecting vessel outside the silo container in order to use this container as effectively as possible for the intermediate storage of binder or additive.

In a further development, the transportable concrete mixing plant according to the invention can comprise binder silo and / or additive silo containers which are stacked in parallel with one another in the operating state with a substantially horizontal orientation. Such a "lying" orientation of silo containers with substantially horizontally extending container longitudinal axis, although in contrast to the above-mentioned edgewise orientation of silo containers requires more space, but allows a more stable and better protected against possible tilting installation of silo containers , Such a horizontal arrangement of silo containers can therefore be provided, for example, at construction sites where increased stability requirements are to be imposed on the silos due to strong winds.

In order to form a continuous binder or additive silo from such silo containers stacked in parallel with one another in a substantially horizontal orientation, these silo containers can in turn be equipped with openable hatches. Since in parallel stacking a silo container is placed with its relatively large bottom surface on a parallel aligned, substantially equal ceiling area of a silo container located underneath, and the size of conventional openable hatches in container surfaces is usually limited, is to ensure a good binder or additive flow from upper to lower silo containers advantageously provided that the stacked with substantially horizontal orientation parallel to each other binder silo and / or additive silo containers each have removable floor and ceiling surfaces. In such silo containers so in the operating condition the concrete mixing plant according to the invention not only open hatches in the bottom or ceiling surfaces of the container, but rather these floor and ceiling surfaces are completely removed. This avoids the occurrence of corners and niches within a silo, in which binders or additives could accumulate.

Since such a constructed silo must be completed in the operating state top and bottom, it is expediently provided that the transportable concrete mixing plant has a substantially divisible in two halves Siloabschluß container whose halves in the operating state, the lowermost or the uppermost container of a group parallel to each other form stacked silo container. In this case, those components can be mounted in the divisible silo-end container, which should contain the lowest and the uppermost container in the operating condition of the system. Thus, the uppermost container of the silo may have a filter which filters out binders and / or additives from the air displaced during filling of the silo. The lowermost container can contain the components already described above, which are required to convey binder or / and additives out of the silo, for example by means of a screw conveyor or a pressure-conveying device.

Alternatively or preferably in addition to the described use of silo containers or binder intermediate containers, which serve as containers for concrete starting materials may be provided in an advantageous embodiment of the transportable concrete mixing plant according to the invention, preferably in a mixer attachment container at least one binder intermediate container is arranged for intermediate storage of binder, wherein advantageously a binder-conveying member, preferably a binder screw conveyor, for conveying binder from at least one binder intermediate container is arranged in a binder bag in the mixer attachment container. hereby it is ensured that the transportable concrete mixing plant according to the invention can continue to work even if the supply of binder from one or more silo containers or binder intermediate containers is temporarily interrupted, for example during their filling. In this case, the binder bag can be supplied in the mixer attachment container namely via the binder-conveying member with binder from the binder intermediate container. It is understood that, depending on the relative arrangement of the binder bag and the binder intermediate container, the binder-conveying member, for example, by a chute, a simple tube, a pressure conveying device u. Like. Can be formed.

In order to perform the supply of the mixer with binders and / or additives in as many ways as possible, and thus to be able to switch flexibly between different binder supply conditions of the system, is advantageously provided that the transportable concrete mixing plant according to the invention for the promotion of binder and / or Additives is formed from a silo container and / or a transport vehicle in a binder intermediate container and / or a binder intermediate container, preferably a screw conveyor assembly and / or a pressure conveying device. The auger assembly and / or the pressure conveying device may, as described above, be stationarily mounted on or in one or more silo containers in order to convey binders or additives from the silo into an intermediate container in a mixer attachment container or into an intermediate container Mounted on a mixer top container. However, such a screw conveyor arrangement or pressure conveying device can also be provided separately from silo containers in the operating state of the system in order to convey binders or additives directly from trucks, which deliver the corresponding substances.

In a concrete realization of the transportable concrete mixing plant according to the invention can be provided that a mixer-container is placed in the operating condition of the system at its ends on at least one other container such that concrete through the openable hatches for removal of concrete from the mixer container in a provided under the mixer container trucks o. The like. Can be drained. As in the case of a setup on a mixer scaffold explained above, the concrete produced in the mixer can be discharged directly into the trucks provided even with such a setup of the mixer container. Furthermore, mixer containers with several mixers, which may be too heavy to be placed on a mixer stand, safely and without stability problems in the manner described with their ends can be placed on at least one other container. It is understood that the at least two other containers on which such a mixer container is placed, can be formed by almost any other container of the concrete mixing plant according to the invention, for example by SteuerstandContainer and / or water containers and / or containers for concrete admixtures.

The invention thus relates to the use of a container, preferably standard shipping container, in particular in the transportable concrete mixing plant described above, as a binder silo. Such a binder silo in the form of a container can be easily transported over long distances with cargo ships, freight trains, trucks, etc. In addition, the use of containers as binder silos offers the possibility to assemble several, usually stacked, containers into larger silos.

To secure a binder or additive silo, preferably a container used as a binder silo, a concrete mixing plant against falling over, the binder silo is by means of cross struts to components of the concrete plant attached. This type of attachment leads to greater stability than the conventional floor mountings and thus reduces the risk of falling over of a largely depleted binder silo in strong wind or other shocks.

Also advantageous is a conveying means, preferably conveyor belt, with optionally switchable conveying direction, which is additionally reciprocable in the longitudinal direction between different operating positions. Such a conveyor is a fast-working and space-saving device for distributing materials from a supply device to a plurality, in particular more than two substantially juxtaposed receiving devices.

Further advantageous is the use of a dosing to increase the effective collecting cross-section of a funnel of a dosing, preferably the dosing unit container of transportable concrete mixing plant described above, which is characterized in that the dosing is formed by a divisible into two halves Dosieraufsatz container whose side by side on the dosing unit patch halves by means of solid baffles in the interior of the halves and outwardly expandable baffles continue the oblique walls of the funnel upwards. The resulting increase in the effective collecting cross-section of the funnel reduces the risk of "falling over" of the material to be filled and thus allows faster filling of the funnel and simultaneous filling by means of several feeders, eg. B. in the form of wheel loaders.

Fig. 1

eine Seitenansicht einer ersten Ausführungsform der erfindungsgemäßen transportierbaren Betonmischanlage mit einem Mischer im Betriebszustand;

Fig. 2

eine Draufsicht auf die Betonmischanlage gemäß Fig. 1;

Fig. 3

eine Seitenansicht einer zweiten Ausführungsform der erfindungsgemäßen transportierbaren Betonmischanlage mit zwei Mischern im Betriebszustand;

Fig. 4

eine Draufsicht auf die Betonmischanlage gemäß Fig. 3;

Fig. 5

eine Seitenansicht einer dritten Ausführungsform der erfindungsgemäßen transportierbaren Betonmischanlage mit vier Mischern im Betriebszustand;

Fig. 6

eine Draufsicht auf die Betonmischanlage gemäß Fig. 5;

Fig. 7

eine Teil-Vorderansicht der Betonmischanlage gemäß Fig. 5;

Fig. 8

eine Seitenansicht des Dosiereinheit-Containers der erfindungsgemäßen transportierbaren Betonmischanlage im Transportzustand;

Fig. 9

eine Vorderansicht des Dosieraufsatz-Containers der erfindungsgemäßen transportierbaren Betonmsichanlage im Transportzustand;

Fig. 10

eine Seitenansicht eines unteren Bindemittelsilo-Containers der erfindungsgemäßen transportierbaren Betonmischanlage im Transportzustand;

Fig. 11

eine Seitenansicht eines oberen Bindemittelsilo-Containers der erfindungsgemäßen transportierbaren Betonmischanlage im Transportzustand;

Fig. 12

eine Seitenansicht eines weiteren oberen Bindemittelsilo-Containers mit einem Betonfertiger im Transportzustand;

Fig. 13

eine Vorderansicht des Bindemittelsilo-Containers gemäß Fig. 12;

Fig. 14

eine Seitenansicht einer weiteren Ausführungsform der erfindungsgemäßen transportierbaren Betonmischanlage mit einer Druckluftfördervorrichtung;

Fig. 15

eine vergrößerte Teil-Seitenansicht des Silo-Containers der Ausführungsform von Fig. 14; und

Fig. 16

eine Draufsicht auf den entlang der Linie A-A in Fig. 15 geschnittenen Silo-Container;

Fig. 17

eine Seitenansicht einer weiteren transportierbaren Betonmischanlage mit einem Bindemittel-Zwischencontainer und einer Förderschneckenanordnung;

Fig. 18

eine Draufsicht auf die Betonmischanlage von Fig. 17 bei Verwendung eines Mischers;

Fig. 19

eine Draufsicht auf die Betonmischanlage von Fig. 17 bei Verwendung von zwei Mischern;

Fig. 20

eine Seitenansicht einer weiteren transportierbaren Betonmischanlage mit einem Bindemittel-Zwischenbehälter in einem Mischeraufsatz-Container;

Fig. 21

eine Draufsicht auf die Betonmischanlage von Fig. 20 bei Verwendung eines Mischers;

Fig. 22

eine Draufsicht auf die Betonmischanlage von Fig. 20 bei Verwendung von zwei Mischern.

The invention is explained below with reference to preferred Ausfühungsbeispielen with reference to the drawing. It shows:

Fig. 1

a side view of a first embodiment of the transportable concrete mixing plant according to the invention with a mixer in the operating state;

Fig. 2

a plan view of the concrete mixing plant of FIG. 1;

Fig. 3

a side view of a second embodiment of the transportable concrete mixing plant according to the invention with two mixers in the operating state;

Fig. 4

a plan view of the concrete mixing plant of FIG. 3;

Fig. 5

a side view of a third embodiment of the transportable concrete mixing plant according to the invention with four mixers in the operating state;

Fig. 6

a plan view of the concrete mixing plant of FIG. 5;

Fig. 7

a partial front view of the concrete mixing plant of FIG. 5;

Fig. 8

a side view of the dosing unit container of the transportable concrete mixing plant according to the invention in the transport state;

Fig. 9

a front view of the dosing attachment container of the transportable Betonmsichanlage invention in the transport state;

Fig. 10

a side view of a lower binder silo container of the transportable concrete mixing plant according to the invention in the transport state;

Fig. 11

a side view of an upper binder silo container of the transportable concrete mixing plant according to the invention in the transport state;

Fig. 12

a side view of another upper binder silo container with a concrete paver in the transport state;

Fig. 13

a front view of the binder silo container of FIG. 12;

Fig. 14

a side view of another embodiment of the transportable concrete mixing plant according to the invention with a compressed air conveying device;

Fig. 15

an enlarged partial side view of the silo container of the embodiment of Fig. 14; and

Fig. 16

a plan view of the along the line AA in Figure 15 cut silo containers.

Fig. 17

a side view of another transportable concrete mixing plant with a binder intermediate container and a screw conveyor assembly;

Fig. 18

a plan view of the concrete mixing plant of Figure 17 using a mixer.

Fig. 19

a plan view of the concrete mixing plant of Figure 17 using two mixers ..;

Fig. 20

a side view of another transportable concrete mixing plant with a binder intermediate container in a mixer attachment container;

Fig. 21

a plan view of the concrete mixing plant of Figure 20 when using a mixer.

Fig. 22

a plan view of the concrete mixing plant of Fig. 20 using two mixers.

For simpler and clearer illustration, in the figures, those containers which include components described below are each shown open to the viewer, i. the viewer facing side or end wall of the container is removed.

Fig. 1 shows a side view of a first embodiment of the concrete mixing plant according to the invention, in which a mixer 12 is used. It can be seen in Fig. 1 right on a bottom plate 14 upright parked on an end face lower binder silo or additive silo container C7, on which an upper silo container C8 is also oriented upright. By opening hatches in the superimposed end faces of the containers C7 and C8 can be formed from these a continuous larger silo. It is not important in these as well as in the openable hatches provided in other containers whether they are opened by folding away, moving sideways or completely removing a hatch door. For this reason, the structure of openable hatches will not be described in detail below.

The lower silo container C7 has, in the region of its lower end in FIG. 1, a funnel 16 which opens onto a lower conveyor screw 18. This passes through the left in Fig. 1 side wall of the lower silo container C7 through a hatch L7 and promotes binder or additive out of it to a vertical screw conveyor 20, which on the left in Fig. 1 side wall of the lower silo container C7 and attached to the upper silo container C8 and runs there substantially upwards. In the lower region of the upper silo container C8, the vertical screw conveyor 20 cooperates with an upper conveyor screw 22 and transfers its binder or the additive for further transport.

The upper conveyor screw 22 passes through the right in Fig. 1 side wall of the mixer attachment container C3 through an opening provided in this side wall hatch L3a and ends above a provided in the mixer attachment container C3 binder bag 24, in which the brought up from the upper auger 22 binder or Additive drops. Through open hatches L3 and L2 in the lower bottom wall of the mixer attachment container C3 and in the upper ceiling wall of standing under the mixer attachment container C3 mixer container C2 through the binder bag 24 leads to the arranged in the mixer container C2 mixer 12 metered binder or Additive to what in the binder bag 24, if necessary, a balance is installed.

As can be seen in Fig. 1, various means for increasing the stability of the binder silo are provided in the embodiment shown: First, a concrete plate 26 is attached to the lower end face on which the lower silo container C7 stands. On the other hand, the lower silo container C7 and the upper silo container C8 in FIG. 1 are fastened with a plurality of transverse struts 28 to the mixer attachment container C3 and to the mixer container C2.

In order to enable safe working on and on this silo in addition to the safe installation of the binder silo, a plurality of ladders 30 and railing devices 32 are provided on the upper silo container C8.

The metered supply of surcharges to the mixer 12 begins during operation of the transportable concrete mixing plant 10 according to the invention in a dosing unit container C5, which has a metering device 34 for metering the surcharges. As seen in Fig. 8, the metering meter 34 comprises a weighing conveyor 34a for weighing and conveying the charges, and a plurality of loading means 34b for feeding the charges to the weighing conveyor 34a. As seen in Figure 8, each feed means 34b is formed as a funnel which tapers downwardly and opens upwardly to an openable hatch in the upper side wall of the dosing unit container C5 in Figures 1 and 8. Thus, the surcharges, which are usually introduced in large quantities with wheel loaders, not precisely on the compared to the dosing unit container C5 relatively narrow cradle conveyor belt 34a are stored, but can easily in Fig. 8 above the entire side surface of the Dosing unit containers C5 are thrown into this, which reduces the risk of "falls" of surcharges, thus allowing a faster loading of the weighing conveyor belt 34a.

In the embodiment of the dosing unit container C5 shown in FIG. 8, in each hopper 34b, a mixture of aggregates with different grain groups, which has previously been put together in the correct ratio, can be introduced. Alternatively, each grain group may be assigned a specific hopper 34b, so that in this case aggregates with four different grain groups may be mixed in the embodiment of the metering unit container C5 shown in FIG.

In order to further increase the upper filling cross section of each funnel 34b in the dosing unit container C5 so that possibly even simultaneous feeding of additives with several wheel loaders is possible, the dosing unit container C5 is assigned a dosing attachment container C6 of substantially the same length. This dosing attachment container C6 is disassembled or unfolded in the operating state in two halves, which are placed side by side and parallel to the dosing unit container C5 on this. Inclined baffles 36 are secured in the dosing attachment container C6 which extend the walls of the funnels 34b through opened hatches L5 and L6 in the upper side wall of the dosing unit container C5 and in the lower side wall of each half of the dosing attachment container C6. As can be seen in the side view of FIG. 1, this effectively doubles the effective filling width of the arrangement of funnels 34b, which corresponds to a doubling of the effective upper filling cross-section of each funnel 34b.

In order to further increase this filling cross-section, additional baffles 38, which are mounted rotatably substantially at corners of the halves of the dosing attachment container C6, are folded upwards out of the dosing attachment container C6. The shape of this fold-out baffles 38 is suitably adapted to the direction from which the supply of aggregates should mainly take place. Thus, the foldable baffles 38 used in the embodiment of Figs. 1 and 2 extend the opening of the funnels 34b substantially to the right above, since the supply of aggregates by one or more wheel loaders 40 substantially, as shown in Fig. 2, from the left.

The charges fed through the hoppers 34b, which are enlarged upwardly by said baffles 36 and 38, fall on the weighing conveyor 34a shown in Fig. 8 which, by means of a built-in balance (not shown), has a predetermined rate of additions transported to a task conveyor 42. This feed conveyor 42 is received in the transport state of the dosing unit container C5 shown in FIG. 8 under the weighing conveyor belt 34a and parallel thereto. In the operating state of the transportable concrete mixing plant 10 according to the invention shown in FIGS. 1 and 2, the feed conveyor belt 42 is pulled out through an open hatch L5a in the lower end face of the dosing unit container C5 in the plan view of FIG. The task-conveyor belt 42 protrudes in this operating state so far under the cradle conveyor belt 34a that it can reliably take the falling at its right in Fig. 8 end surcharges.

As can be seen in Figs. 1 and 2, located outside of the dosing unit container C5 end of the task conveyor belt 42 is disposed above a steep conveyor belt 44 for the supply of aggregates to the mixer attachment container C3. In order to prevent a "falling down" of surcharges at this end in addition to the steep conveyor belt 44, this may conveniently be provided at its lower end with a designed as baffle plate, chute or the like aggregate collecting device 46. As indicated in Fig. 1 by a dashed line, the steep conveyor belt 44 is completely taken during transport of the concrete mixing plant according to the invention in the folded state in a steep conveyor belt container C4. For operation, one end of the steep conveyor belt 44 is pulled out through an open hatch L4 in the upper ceiling wall of the steep conveyor belt container C4 and one at that end located upper deflection roller 44a rotatably mounted on the mixer attachment container C3 such that this end of the steep conveyor belt 44 is above the arranged in the mixer attachment container C3 feed means 46 for surcharges. A lower guide pulley 44b, via which the drive of the steep conveyor belt 44 is expediently carried out, is furthermore arranged in the steep conveyor belt container C4. In order to stabilize the steep conveyor belt 44, optionally further deflection rollers 44c may be provided between the upper deflection roller 44a and the lower deflection roller 44b, as indicated in FIG.

In order to avoid scattering losses on falling of surcharges in the Vorsilo 48 above the mixer 12 at the upper end of the steep conveyor belt 44 in the region of the upper guide roller 44a, a baffle plate 50 may be secured to the mixer attachment container C3 such that it is conveyed by the steep conveyor belt 44 aggregates into the Vorsilo 48 passes.

As shown in Fig. 1, the mixer container C2 contained in the mixer 12 is set up on a standing surface of a mixer stand 52, which stands next to the lower binder silo container C7 on the bottom plate 14. This mixer frame 52 is dimensioned such that concrete produced by the mixer 12 can be discharged through a lower bottom emptying opening 12a of the mixer 12 and opened hatches L2a in the bottom surface of the mixer container C2 into a truck 54 provided below the standing surface. With the help of one or more such trucks 54, the freshly produced concrete can be transported to the respective site on the construction site.

The first embodiment of the transportable concrete mixing plant according to the invention, shown in FIGS. 1 and 2, furthermore comprises an individually installed water and / or additive container C11. The supply of water and / or additives to the mixer 12 by means of pumps and an arrangement of pipes or hoses is known in concrete mixing plants and is therefore not discussed in more detail.

As can be seen in the plan view of Fig. 2, in this first embodiment, the mixer attachment container C3 and the control container C10 to a container, preferably a standard shipping container, composed, which has the same dimensions as the mixer container C2 on which he stands. Of course, it is also possible to separate the containers C3 and C10 in operation from one another, for example to set up the control container C10 at another location, which provides a better overview of the concrete mixing plant 10 according to the invention. Alternatively, it is of course also possible to incorporate the components of the concrete mixing plant according to the invention, which are normally received in different containers C3 and C10, from the outset into a single container.

A second embodiment of the transportable concrete mixing plant according to the invention is shown in FIGS. 3 and 4. Compared to the embodiment shown in Figs. 1 and 2, this embodiment allows greater concrete production since it uses two mixers. Components of this second embodiment, which are identical or functionally identical to components of the first embodiment, are provided in FIGS. 3 and 4 with the same reference numerals as in FIGS. 1 and 2.

In the second embodiment shown in FIGS. 3 and 4, the mixer container C2 comprises two mixers 12 which are preferably identical in construction. To supply these two mixers 12 with binder, all components of the first embodiment serving this purpose are provided twice in the second embodiment. It can thus be seen in Figs. 3 and 4 two lower silo containers C7, on each of which upper silo containers C8 are. As in the first embodiment, each form a lower silo container C7 and an upper silo container C8 a larger silo, from each of which a mixer 12 via a respective hopper 16, a lower binder screw conveyor 18, a binder vertical screw conveyor 20, an upper binder screw conveyor 22 and a optionally provided with a balance binder bag 24 is supplied in a mixer attachment container C3 with binder.

In the second embodiment of the concrete mixing plant 10 according to the invention, the addition of aggregates to two blanks 48 for aggregates, which are each assigned to a mixer 12, again takes place via a metering cap container C6 provided with baffle plates 36, 38, and one in a metering unit. Container C5 recorded metering device 34 with feed means 34b and a weighing conveyor belt 34a and a task conveyor belt 42 which transports the surcharges to a steep conveyor belt 44.

In order to distribute the falling at the upper end of the steep conveyor belt 44 in the region of its upper guide roller 44a surcharges on the two Vorsilos 48 for aggregates, a substantially horizontally extending aggregate conveyor belt 56 is installed in the mixer attachment container C3, the ends of each one of the two Vorsilos 48 are arranged. The direction of the aggregate conveyor belt 56 is selectively switchable, so that the falling of the steep conveyor belt 44 supplements depending on the operating condition of the two mixers 12 and the level of surcharges in the Vorsilos 48 either one of the two Vorsilos 48 can be supplied.

Also in the second embodiment of the concrete mixing plant according to the invention shown in FIGS. 3 and 4, the mixer container C2 containing the two mixers 12 stands on a standing surface of a mixer stand 52. Thus, in this embodiment too, concrete from each mixer 12 can be placed in one or possibly also several "back to back" standing, ie with their rear ends to each other oriented trucks are drained.

It can be seen in Figs. 3 and 4 further, that the control container C10, in contrast to the first embodiment of FIGS. 1 and 2, not placed on the mixer frame 52, but on the additive container C9 for reasons of space. Of course, the control container C10 can also be set up at another point providing a good overview of the concrete mixing plant 10 according to the invention.

A third embodiment of the transportable concrete mixing plant according to the invention is shown in FIGS. 5 to 7. This embodiment is intended for large construction sites where a lot of concrete is needed. For this reason, the embodiment of the concrete mixing plant 10 according to the invention shown in FIGS. 5 to 7 contains two mixer containers C2, each containing two mixers 12. In operation, the two mixer-containers C2 as shown in Fig. 6 can be seen, placed side by side, and opened hatches in the adjacent end faces of the two mixer container C2 that the total of four mixers 12 are substantially in a row. On each mixer-container C2 a mixer attachment container C3 is set up, which is substantially identical to the mixer attachment container C3 shown in Figs. 3 and 4 and thus for each mixer 12 a Vorsilo 48 for surcharges and a binder bag 24 contains.

Also in the third embodiment, each mixer 12 is associated with a complete set of binder or additive supply components, i. H. the silo containers C7 and C8 as well as the augers 18, 20 and 22.

In order to meet the high demand for surcharges in this third Auführungsform of the invention, which is from the first two embodiments known group of components for metering and delivery of aggregates, comprising a dosing attachment container C6, a dosing unit container C5 and the components received in them during transport, present here twice. As can be seen in Fig. 6, the steep conveyor belt 44 surcharges are thus supplied by two task conveyor belts 42.

To distribute the falling in the upper pulley 44a from the steep conveyor belt 44 surcharges on the four mixers 12, the known from Figs. 3 and 4 conveyor belt with optional reversible direction is further developed in this embodiment to a aggregate conveyor belt 56, which between several operating positions - And can be moved, in which each end of the aggregate conveyor belt 56 is assigned to a Vorsilo 48 for surcharges. Thus, in Fig. 7, the aggregate conveyor belt 56 in an operating position in which it supplies by switching its direction of the two Vorsilos 48 for surcharges, which are assigned to the two in Fig. 7 each left mixers 12 of each mixer-container C2. By moving the aggregate conveyor belt 56 onto rollers 58 diagrammatically indicated in FIG. 7, it can be displaced into a second operating position in which it supplies the two presens 48 for aggregates which are connected to the two right mixers 12 of FIG. Containers C2 are assigned.

The removal of the concrete produced takes place in the illustrated in FIGS. 5 to 7 third embodiment of the invention in a different manner than in the first two embodiments, since the two mixer mixers containing a total of four mixers 12 usually for weight reasons not on a Mixer frame can be made. Instead, the two mixers container C2, as can be seen in Fig. 5, on a loading container C1, in the ceiling wall of the openable hatches L2a of the bottom wall of each mixer container C2 opposite openable hatches L1 are provided. Through these open hatches L2a, During operation of the system 10 according to the invention, the concrete discharged from the mixers 12 drops to a concrete conveyor belt 60 which has been completely loaded in the loading container C1. The concrete conveyed in the running direction by this upper concrete collection belt 60 falls onto a lower concrete conveyor belt 62 at the end of the upper concrete collection belt 60. This lower concrete conveyor belt 62 is also completely included in the loading container C1 during transport and is pulled to operate the system 10 so far by an open hatch L1 a in the right in Fig. 7 end wall of the loading container C1, that it is at his in Loading container C1 remaining end safely receive the concrete falling from the upper concrete collection belt 60 and can transport to a truck 54 provided next to the loading container C1.

The arrangement of the lower concrete conveyor belt 62 within the loading container C1 during transport is shown in dashed lines in FIG.

10 shows a side view of the lower silo container C7 of the transportable concrete mixing plant 10 according to the invention, in which the front side wall is removed to simplify the illustration. One recognizes the fixedly in the lower silo container C7 attached funnel 16 and fixed to his right in Fig. 10 end face for stabilization purposes concrete plate 26. It also recognizes a recorded for transport in the container C7 lower auger 18 and a disassembled in parts mixer frame 52nd It is understood that these components during transport by means not shown in Fig. 10 securing means such. B. straps, can be secured against slipping.

11 shows a side view of an upper silo container C8 of the concrete mixing plant 10 according to the invention. In this container C8 during transport, the bottom plate 14, the vertical screw conveyor 20, the upper screw conveyor 22, a replacement screw 22e, which are in the operating state received on the upper silo container C8 fixed conductor 30 and the railing device 32.

12 and 13 show a side and front view of another upper silo container C8, wherein the front side or end wall of the container is again removed for better illustration. In the container C8 a concrete paver 64 is added during transport, which can be used at the site for concreting roads, runways and the like. It is understood that in the transported during transport containers, in particular the often empty entrained upper binder silo containers C8 optionally other items needed on the site can be carried.

FIGS. 14, 15 and 16 illustrate another embodiment of the transportable concrete mixing plant 10 according to the invention. In this embodiment, instead of the augers 18, 20 and 22 provided in the previous embodiment, a pressure conveying device 66 is provided for transporting them in a silo container C7, C8 contained substances, so for example, binders and / or additives, herauszufördern from this container C7, C8. For this purpose, a collecting vessel 68 is installed in the lower area of the lower silo container C7. In the upper wall of the collecting vessel 68, a motorized pressure-tight closure flap 68a is provided so that it lies just below the lower end of the hopper 16 mounted in the silo container C7.

The filling of the collecting vessel 68 is done as follows: First, the silo containers C7, C8 are filled with binder or additive. In the embodiment illustrated in FIGS. 14 to 16, this takes place via binder supply connection elements 78, which are provided in the lower region of the silo container C7 and can be opened outwardly, to which a connecting hose to a device equipped with a pressure conveying device, with a binder, is knitted in a manner known per se or additives loaded Trucks can be connected. The conveyed by this truck with pressure to the binder feed connection elements 78 substances are pressed into binder supply pipes 80 which extend in the corners of the silo containers C7, C8 in Figs. 14 to 16 approximately vertically upwards and in the upper part of the overhead silo containers C8 are curved toward the interior of the silo container C8 so that the substances forced into the binder feed line 80 via the binder feed connectors 78 at the top of these binder feed conduits 80 into the interior of the silo -Container C7, C8 fall. In the embodiment of the transportable concrete mixing plant 10 according to the invention shown in FIGS. 14 to 16, two such binder supply pipelines 80 are provided in each case in the silo containers C7, C8 shown. This technique for filling binder silos is known per se and will not be explained in detail here.

The materials thus conveyed into the silo containers C7, C8 fill the funnel 16 as well as the overlying areas of the silo containers C7, C8 and rest with a certain pressure on the pressure-tight closure flap 68a of the collecting vessel 68. During the motorized opening of the closure flap 68a, an amount of binder or additive determined by the opening duration falls into the collecting vessel 68, which is closed again in a pressure-tight manner by the subsequent closing of the closure flap 68a. The during the filling of the binder or additive into the collecting vessel 68 to be displaced from this air can escape through air discharge lines 82, which proceeding from the upper edge region of the collecting vessel 68 starting substantially parallel to the binder supply pipes 80 upwards and in one with a Filter provided chimney at the top of the upper silo container C8 open. In the embodiment of the transportable concrete mixing plant 10 according to the invention shown in FIGS. 14 to 16, the air discharge lines 82 are for reasons of Simplicity as formed from the inner region of the silo containers C7, C8 pressure-tight recesses formed in which also the binder supply pipes 80 extend. Of course, however, the air discharge lines 82 may be formed as pipelines.

The binder or additive filled in the collecting vessel 68 is then pressed into a delivery hose 72 connected to the collecting vessel 68 with the aid of a compressor 70 connected to the collecting vessel 68. In the embodiment illustrated in FIGS. 14 to 16, similar to the vertical screw conveyor 20 in the preceding embodiments, this conveying tube 72 extends approximately perpendicularly to the outer wall of the silo containers C7, C8 and opens into a binder intermediate container C12 which rises a mixer attachment container C3 is set up. The binder or additive conveyed through the delivery hose 72 into the binder intermediate container C12 falls into a hopper 74 installed in the lower region of the binder intermediate container C12, which opens via a corresponding hatch in the bottom of the binder intermediate container C12 over a rotary valve 76 which is disposed above a binder pocket 24 in a mixer attachment container C3. The rotary valve 76 not only ensures the pressure decoupling between the binder or additive conveyed with pressure into the intermediate binder container C12 and the binder or additive to be weighed in the binder pocket 24, but also allows predosing of the binder in the binder pocket 24 by adjusting its running speed precisely metered binder or additive.

As clearly shown in Fig. 14, in this embodiment, the rotary valve 76 and the binder bag 24 are integrally formed. Of course, it is also possible to arrange a rotary valve 76 separate from a binder bag 24 above it. Of course, the delivery hose 72 need not necessarily extend in the manner shown in Fig. 14 approximately perpendicular to the outer wall of the silo containers C7, C8 upwards. On the contrary, the use of such a delivery hose 72 offers the advantage of conveying binders or additives in a flexible manner from silo containers C7, C8 to a possibly further intermediate binder container C12 on a mixer attachment container C3.

17, 18 and 19 illustrate another transportable concrete mixing plant 10. In this binder binder silo containers C13 are used, which are stacked parallel to each other with a substantially horizontal orientation. In FIG. 17, five such silo containers C13 are shown on the right with horizontal longitudinal axes lying in the plane of the drawing. The floor and ceiling surfaces of these silo containers C13 have been removed after transport in the construction of transportable concrete mixing plant 10, so that in the area of the transition between two silo containers C13 almost no niches, corners u. Like. occur, in which binders could accumulate undesirably. These five silo containers C13 are installed on a lowest silo container C13A1 and closed at the top by a top silo container C13A2. As can be seen in FIG. 17, the lowermost silo container C13A1 and the uppermost silo container C13A2 have half the height of the five other silo containers C13. In fact, these two containers C13A1, C13A2 are the halves of a divisible silo closure container C13A, which is carried along as a closed container during transport of the concrete mixing plant 10 and is divided into the two illustrated halves when constructing the concrete mixing plant 10. This Siloabschluß container C13A can take during transport components that are required in the operating condition of the system 10 at the silo, for example, in Fig. 17 at the top of the uppermost container C13A2 illustrated filter 90, which filters out of the displaced during filling of the silo air binder.

Similar to the explained with reference to FIGS. 1 - 11 embodiments of the concrete mixing plant 10 according to the invention shown in Figs. 17 - 19 variant binder from the lower region of a binder silo, which here by the five silo containers C13 the lowermost silo container C13A1 and the uppermost silo container C13A2 is formed, conveyed out by a screw conveyor assembly. However, in the embodiment of FIGS. 17-19, this delivery does not take place directly to a binder pocket 24 arranged in a mixer attachment container C3, but, similar to the embodiment shown in FIG. 14, into a binder intermediate container C12 which is mounted on a mixer attachment. Container C3 is placed. This binder delivery takes place with the aid of a binder screw conveyor screw 88 which, as can be seen in FIG. 17, runs directly from the lowermost silo container C13A1 to the intermediate binder container C12. Due to this oblique course, the binder slant conveyor screw 88 can be designed to be shorter than the sum of the lengths of the three screw conveyors 18, 20, 22 shown in FIG. 1, for example, which run horizontally or vertically, which leads to cost savings and facilitates assembly. since the alignment of several augers to each other deleted.

As can be seen in the plan view of FIG. 18 (installation with a mixer) and FIG. 19 (installation with two mixers), two juxtaposed "towers" of silo containers C13 are provided in this embodiment, each with horizontal Orientation are stacked parallel to each other. From the lowest silo container C13A1 of each tower, binder is conveyed out through a binder slant conveyor screw 88, respectively. In the variant of this embodiment shown in FIG. 18, in which a mixer is used, the two binder inclined screw conveyors 88 do not lead directly into the Binder intermediate container C12, but rather to chutes, which are provided on its sides in its upper region and over which the lubricant conveyed by the binder-inclined screw conveyor 88 slides into the binder intermediate container C12. Similarly, in the variant with two mixers shown in FIG. 19, the two binder inclined screw conveyors 88 each terminate at a respective chute leading to two intermediate binder containers C12, each disposed over a binder pocket 24 for supplying a mixer 12.

The binder intermediate container C12 is further equipped with a dashed lines in Fig. 17 indicated binder feed line 92, similar to the illustrated in Figs. 14-16 silo containers C7, C8 filling the binder intermediate container C12 from a binder supplying trucks o. The like. Enables, for example by means of a pressure conveying device described above. Thus, since the binder intermediate container C12 can be filled in two different ways, namely on the one hand from the silo containers C13 via the binder slant conveyor screw 88 and on the other hand from a delivery vehicle via the binder supply line 92, a continuous supply of the mixer 12 with binder be guaranteed with high security.

In the embodiment illustrated in FIGS. 17-19, two further containers are arranged on a mixer container C2, namely a mixer attachment container C3 and, in turn, a binder intermediate container C12. The resulting total weight excludes a line-up of the mixer-container C2 on a mixer frame 52, as shown for example in Fig. 1, usually. In order nevertheless to be able to discharge concrete directly from the mixer-container C2 into a truck 54 or the like provided below the mixer-container C2, the mixer-container C2 is in the position shown in FIGS. 17-19 Embodiment at its ends on each other Containers placed so that a lower central region of the mixer container C2, in which at least one openable hatch L2a for removing concrete is freely accessible. In Fig. 17, the mixer-container C2 is placed at its left end on a helm container C10, which in turn is on a water container C11. The right end of the mixer container C2 in FIG. 17 is set up on an additive container C9, which in turn likewise stands on a water container C11. In this arrangement, a provided truck 54 can travel under the openable hatches L2a of the mixer container C2 and receive discharged concrete. The water containers C11 shown for setting up the mixer container C2 in FIG. 17 each have half the height of the additive container C9 or of the control station container C10. It is understood that water container C11 or other container of the transportable concrete mixing plant 10 according to the invention can be used, which have the same height as the container C9, C10, so that in this case the mixer container C2 would be higher. Important with regard to the choice of containers used to support the mixer-container C2 at its left and right ends is that the mixer-container C2 is sufficiently high to ensure trouble-free insertion of the truck 54, but not so it is high that deflated concrete could fall next to the truck 54 or fall on its bed at too high a speed.

It is understood that this type of installation of the mixer container C2, regardless of the embodiment of Fig. 17 - 19 can be chosen in principle as an alternative to using a mixer frame 52 or a loading container C1.

The transportable concrete mixing plant 10 shown in FIGS. 20-22 is that shown in FIGS. 17-19 presented similarly. In the following, therefore, only the differences from the embodiment described above will be explained.

In the case of the embodiment of the transportable concrete mixing plant 10 shown in FIGS. 20-22, a binder intermediate container C 12 is set up on a mixer attachment container C3 above the binder pocket 24 provided in it. However, the binder slant conveyor screw 88 does not convey binder from the silo containers C13 in this embodiment into the intermediate binder container C12, but rather into a binder intermediate container 84 provided at the top right in the mixer bowl container C3 in FIG. From this binder intermediate container 84 in turn binder is conveyed by means of a screw conveyor 86 in the binder bag 24. It is understood that depending on the size and relative arrangement of the binder bag 24 and the binder intermediate container 84 may be provided instead of a screw conveyor 86 and a simple chute or slide or a small pressure conveying device.

The course of the binder slant conveyor screw 88 selected from this embodiment, from the lowermost silo container C13A1 to the binder intermediate container 84 in the mixer top container C3, allows the use of a shorter binder slant conveyor screw 88, compared to the embodiment explained with reference to FIGS. 17-20. which can contribute to cost savings and facilitate transport and assembly.

The intermediate binder container C12 is also equipped in this embodiment with a binder supply line 92 and therefore, as already explained above, can be filled from a lorry delivering truck or the like.

As the plan views in Fig. 21 (one mixer) and in Fig. 22 (two mixers) show, in the embodiment considered here, in contrast to the embodiment explained with reference to Figs. 17-19, the two "towers" are of silo containers C13, which are stacked parallel to each other with a substantially horizontal longitudinal axis, spaced from each other and connected by cross braces 94 together. As a result, a greater stability of the silo containers C13 can be achieved against falling over, which is particularly important when the transportable concrete mixing plant 10 according to the invention is used at construction sites that are exposed to strong wind.

The invention is not limited to the exemplified embodiments. Thus, it can be seen from the three embodiments described above that the transportable concrete mixing plant 10 according to the invention can in principle have any number of mixers 12. Furthermore, it is possible to supply a plurality of mixers with binder by a single binder silo, whereby a conveyor belt for binders similar to the one presented in the third embodiment, displaceable between different operating positions aggregate conveyor belt 56 can be used with optional reversible direction. Furthermore, the number of dosing unit containers C5 used with associated dosing attachment containers C6 can also be varied, depending on the number of mixers 12 used and the speed of their concrete production, alternatively with respect to the presented embodiments. It is also possible to use more than one steep conveyor belt 44 to supply surcharges to the presilisers 48. Furthermore, the relative arrangement of the container can be changed in full respect of the function of the transportable concrete mixing plant 10 of the invention compared to the presented embodiments, without departing from the scope of the invention.

Claims (61)

1. Transportable concrete mixing plant (10), comprising a number of mixing plant components which can be connected detachably to one another and which during transport are accommodated in a number of containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13), at least some of these containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C19, C11, C12, C13), preferably all of these containers, serving as a load-bearing structure for mixing plant components and/or containers for concrete raw materials when the mixing plant (10) is operating, characterized by two silo containers (C7, C8) for binder or concrete additive standing upright and being stacked on top of each other at their end faces, wherein the lower of the two silo containers (C7, C8) contains in its lower section a hopper (16) whose upper cross section essentially corresponds to the cross section of the silo container (C7) and has an inner space for storage of binder or concrete additive in a region located above the hopper (16).
2. Transportable concrete mixing plant (10) according to claim 1, characterized in that the containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13) are standard shipping containers or can be combined into standard shipping containers which can be transported in a standard way in accordance with international regulations, especially by ship, rail and heavy goods vehicle.
3. Transportable concrete mixing plant (10) according to claim 1 or 2, characterized in that at least some containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13) have openable hatches (L1, L1a, L2, L2a, L3, L3a, L3b, L4, L4a, L5, L5a, L6, L7) through which, when the mixing plant (10) is operating, mixing plant components accommodated in various containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13), at least to some extent, can work together.
4. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it has at least one mixer container (C2), which contains at least one concrete mixer (12) for the mixing of aggregates, of preferably cement-containing binder, of water and of additional compounds and additives for producing concrete.
5. Transportable concrete mixing plant (10) according to claim 4, characterized in that that wall of the mixer container (C2) which is located above each mixer (12) when the plant is operating has a hatch (L2) which can be opened above each mixer (12).
6. Transportable concrete mixing plant (10) according to claim 5, characterized in that it comprises at least one stackable mixer container (C3) which, when the mixing plant (10) is operating, is arranged on the mixer container (C2) and which contains loading means for the introduction of binder, preferably cement, and of aggregates and, if appropriate, additives into each mixer (12) through the openable hatches (L2) located in the upper wall of the mixer container (C2) and through hatches (L3) which can be opened and are located in the bottom wall of the stackable mixer container (C3), opposite these hatches (L2).
7. Transportable concrete mixing plant (10) according to claim 6, characterized in that the loading means for each mixer (12) comprise a pilot silo (48) for aggregates and a binder hopper (24) for binders and, if appropriate, for additives.
8. Transportable concrete mixing plant (10) according to claim 7, characterized in that the binder hopper (24) and, if appropriate, the additive hopper contains a balance.
9. Transportable concrete mixing plant (10) according to one of claims 6 to 8, characterized in that a binder conveying means (22) leading through an opened hatch (L3a) in a wall of the stackable mixer container (C3) into the latter is provided for the introduction of binder and, if appropriate, additive into the stackable mixer container (C3).
10. Transportable concrete mixing plant (10) according to claim 9, characterized in that the binder conveying means (22) leading into the stackable mixer container (C3) is a feed screw.
11. Transportable concrete mixing plant (10) according to one of claims 6 to 10, characterized in that when at least two mixers (12) are used, an aggregate conveying means (56) is provided, having a running direction which can be changed over optionally in order to feed the aggregates to the loading means (48) respectively assigned to a mixer (12).
12. Transportable concrete mixing plant (10) according to claim 11, characterized in that when at least three mixers (12) are used, the aggregate conveying means (56) can be moved to and fro over the loading means (48) for the aggregates, between a number of operating positions in which each end of the aggregate conveying means (56) is assigned to a loading means (48) for aggregates.
13. Transportable concrete mixing plant (10) according to claim 11 or 12, characterized in that the aggregate conveying means (56) is a conveyor belt.
14. Transportable concrete mixing plant (10) according to one of claims 6 to 13, characterized in that an inclined conveying means (44) passing through at least-one wall of the stackable mixer container (C3), through an opened hatch (L3b), is provided for introducing the aggregates into the stackable mixer container (C3).
15. Transportable concrete mixing plant (10) according to claim 14, characterized in that the inclined conveying means (44) is a conveyor belt which, during transport, is accommodated in the folded-up state in an inclined conveyor-belt container (C4).
16. Transportable concrete mixing plant (10) according to one of claims 4 to 15, characterized in that that wall of the mixer container (C2) which is at the bottom when the plant is operating has, under each mixer (12), a hatch (L2a) which can be opened to remove concrete from the mixer container (C2).
17. Transportable concrete mixing plant (10) according to claim 16, characterized in that the mixer container (C2) is erected on a standing surface of a mixer frame (52) which is dimensioned such that concrete can be discharged through the openable hatches (L2a), in order to remove concrete from the mixer container (C2), into a heavy goods vehicle (54) or the like provided underneath the standing surface.
18. Transportable concrete mixing plant (10) according to claim 16, characterized in that when the plant is operating, the mixer container (C2) stands on an offloading container (C1), in whose top wall hatches (L1) which can be opened are provided, opposite the openable hatches (L2a) in the bottom wall of the mixer container (C2).
19. Transportable concrete mixing plant (10) according to claim 18, characterized in that there is provided in one end wall of the offloading container (C1) an openable hatch (L1a), through which there passes a concrete conveying device, which during transport is accommodated completely in the offloading container (C1), for conveying the concrete, for example to a heavy goods vehicle or the like provided beside the offloading container.
20. Transportable concrete mixing plant (10) according to claim 19, characterized in that the concrete conveying device comprises an upper concrete collecting belt (60) which, when the plant is operating, is accommodated completely in the offloading container (C1) and a lower concrete conveyor belt (62) which, when the plant is operating, passes through the openable hatch (L1a) in the end wall of the offloading container (C1).
21. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that at least one mixer (12) is provided in at least one mixer container (C2) and that the at least one mixer container is, in its end region, carried on containers, at least one of these containers being a control-station container (C10).
22. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that each binder silo and additive silo container (C7, C8), respectively, stands upright on its end face.
23. Transportable concrete mixing plant (10) according one of the preceding claims, characterized in that at least two binder silo or additive silo containers (C7, C8) are erected beside one another.
24. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that each binder silo or additive silo container (C7, C8) erected upright is fastened, by means of transverse struts (28), to the stackable mixer container (C3) and/or to the mixer container (C2) and/or to the offloading container (C1) or to the mixer frame (52) for the purpose of stabilization.
25. Transportable concrete mixing plant (10) according to one of claims 22 to 24, characterized in that each silo container (C7) which is not standing on a further silo container (C7,C8), and the offloading container (C1) and/or the-mixer frame (52) are fastened to a common baseplate (14).
26. Transportable concrete mixing plant (10) according to one of claims 22 to 25, characterized in that each silo container (C8) which is not standing on a further silo container (C7, C8), when in its operating state, contains in its lower region a hopper (16) whose upper cross section essentially corresponds to the cross section of the silo container (C7) and which tapers downwards.
27. Transportable concrete mixing plant (10) according to one of claims 22 to 26, characterized in that each silo container (C7) which is not standing on a further silo container (C7, C8) has, on its end face which is located at the bottom when it is operating, a concrete slab (26) for stabilization.
28. Transportable concrete mixing plant (10) according to claim 26 or 27, characterized in that, in the operating state, a binder or additive conveying means (18) is arranged underneath the hopper opening, and passes through a side wall of the silo container (C7) through an opened hatch (L7).
29. Transportable concrete mixing plant (10) according to claim 28, characterized in that the binder or additive conveying means (18) is a feed screw.
30. Transportable concrete mixing plant (10) according to claim 28 or 29, characterized in that the binder or additive conveying means (18) works together with a vertical conveying means (20) which runs essentially vertically or obliquely upwards on an outer wall of the silo container (C7) in such a way that it can transfer binder or additive to the latter for onward conveyance.
31. Transportable concrete mixing plant (10) according to claim 30, characterized in that the vertically or obliquely running conveying means (20) is a feed screw.
32. Transportable concrete mixing-plant (10) according to claim 30 or 31, characterized in that the vertically or obliquely running conveying means (20) works together with the binder or additive conveying means (22) which runs partly in the stackable mixer container (C3) in such a way that it transfers binder or additive to the latter for onward conveyance.
33. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that in addition ladders (30), safety railings (32) and the like are provided on the outside of the silo container (C7, C8), which during transport are accommodated in a container, preferably this container (C7, C8).
34. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that a concrete finisher (64) and/or a working platform or the like, during transport, are accommodated in a container, preferably a silo container (C7, C8).
35. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it comprises at least one metering-unit container (C5) which contains a metering device (34) for metering the aggregates.
36. Transportable concrete mixing plant (10) according to claim 35, characterized in that the metering device (34) for aggregates has at least one weighing conveyor belt (34a) for weighing and transporting the aggregates, and at least one loading means (34b) assigned to the weighing conveyor belt (34a).
37. Transportable concrete mixing plant (10) according to claim 36, characterized in that each loading means (34b) is formed by a hopper which is arranged above the weighing conveyor belt (34a), which tapers downwards and, upwards, opens wide towards an openable hatch (L5) in that side wall of the metering-unit container (C5) which is at the top when operating.
38. Transportable concrete mixing plant (10) according to claim 37, characterized in that each metering-unit container (C5) is assigned a stackable metering container (C6) of essentially the same length, whose halves, when operating, are placed beside each other and parallel to the metering-unit container (C5), oriented with the latter, and which, with the aid of a baffle-plate device and openable hatches (L5, L6) in the upper side wall of the metering-unit container (C5) and in the lower side wall of each half of the stackable metering container (C6), enlarge the effective upper filling cross section of each hopper (34b) in the metering-unit container (C5).
39. Transportable concrete mixing plant (10) according to claim 38, characterized in that the baffle-plate device comprises baffle plates (36) which are permanently arranged in the stackable metering container (C6) and run obliquely and which, in the operating state, lengthen the walls of each hopper (34b) in the metering-unit container (C5) upwards into the halves of the stackable metering container (C6).
40. Transportable concrete mixing plant (10) according to claim 38 or 39, characterized in that the baffle-plate device further comprises baffle plates (38) which are rotatably mounted essentially at corners of the halves of the stackable metering container (C6) and, in the operating state, are folded out of the stackable metering container (C6) in such a way that they enlarge the hopper opening at the top.
41. Transportable concrete mixing plant (10) according to one of claims 36 to 40, characterized in that in the metering-unit container (C5) there is also provided a feed conveying means (42) which runs underneath the weighing conveyor belt (34a), parallel to the latter, and can be displaced in the longitudinal direction, partly out of the metering-unit container (C5), through an openable hatch (L5a) in an end face of the metering-unit container (C5).
42. Transportable concrete mixing plant (10) according to claim 41, characterized in that the feed conveying means (42) is a conveyor belt.
43. Transportable concrete mixing plant (10) according to claim 41 or 42, characterized in that that end of the feed conveying means (42) which, in the operating state, is located outside the metering-unit container (C5) is arranged above the inclined conveying means (44) for feeding aggregates to the stackable mixer container (C3).
44. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it also comprises an additive container (C9) to accommodate concrete additives.
45. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it also comprises a control-station container (C10), in which a control station for controlling the components of the concrete mixing plant (10) is accommodated.
46. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it also comprises a water container (C11) or a container which accommodates water and/or concrete additives.
47. Transportable concrete mixing plant (10) according to one of the preceding claims, which, as a result of covering, insulation, partitioning, warming or heating (with warm air, heating steam, heating coils and so on) the individual mixing plant components (in particular the mixer container (C2) together with the stackable mixer container (C3), conveyor belts (34a, 44, 56, 62), metering-unit container (C5), additive container (C9) and water container (C11) together with delivery lines), makes mixing operation possible even at ambient temperatures below 0°C.
48. Transportable concrete mixing plant (10) according to one of claims 1 to 47, characterized in that it has a pressure conveying device (66), preferably a compressed-air conveying device, for conveying by pressure from at least one silo container (C7).
49. Transportable concrete mixing plant (10) according to claim 48, characterized in that the pressure conveying device (66) comprises a collecting vessel (68) with a compressor (70) and a delivery hose (72) connected to the collecting vessel (68).
50. Transportable concrete mixing plant (10) according to one of claims 6 to 49, characterized in that it has at least one intermediate binder container (C12) for the intermediate storage of binder, which is preferably erected on at least one stackable mixer container (C3).
51. Transportable concrete mixing plant (10) according to claim 49 and claim 50, characterized in that the delivery hose (72) opens into the at least one intermediate binder container (C12).
52. Transportable concrete mixing plant (10) according to claim 50 or 51, characterized in that the at least one intermediate binder container (C12) contains a hopper (74), which opens into a rotary feeder (76) which is arranged above a binder hopper (24) in a stackable mixer container (C3).
53. Transportable concrete mixing plant (10) according to claim 49 or one of claims 50 to 52, to the extent which they refer back to claim 49,
    characterized in that the collecting vessel (68) and the compressor (70) are arranged in the lower region of the silo container (C7).
54. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it has binder silo containers and/or additive silo containers (C13) which, when operating, are stacked on one another and parallel to one another with essentially horizontal orientation.
55. Transportable concrete mixing plant (10) according to claim 54, characterized in that the binder silo containers and/or additive silo containers (C13) stacked on one another and parallel to one another with essentially horizontal orientation each have removable bottom and top surfaces.
56. Transportable concrete mixing plant (10) according to claim 54 or 55, characterized in that it has a final silo container (C13A) which can essentially be divided into two halves and whose halves (C13A1, C13A2), when operating, form the lowest (C13A1) and, respectively, the uppermost (C13A2) container of a group of silo containers (C13) stacked on one another and parallel to one another.
57. Transportable concrete mixing plant (10) according to one of claims 6 to 56, characterized in that at least one intermediate binder vessel (84) for the intermediate storage of binder is preferably arranged in a stackable mixer container (C3).
58. Transportable concrete mixing plant (10) according to claim 57,
    characterized in that a binder delivery means (86), preferably a binder feed screw, for delivering binder from at least one intermediate binder vessel (84) into a binder hopper (24) is arranged in the stackable mixer container (C3).
59. Transportable concrete mixing plant (10) according to claim 57 or 58, characterized in that it is designed to deliver binder and/or additives from a silo container (C7, C8, C13) and/or a transport vehicle into an intermediate binder vessel (84) and/or an intermediate binder container (C12), preferably having a feed-screw arrangement (18, 20, 22; 88) and/or a pressure conveying device (66).
60. Transportable concrete mixing plant (10) according to one of claims 4 to 59, characterized in that when the plant is operating, a mixer container (C2) is set up on its ends on at least one other container (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13) in each case in such a way that concrete can be let out through the openable hatches (L2a) for removing concrete from the mixer container (C2) into a heavy goods vehicle (54) or the like provided under the mixer container (C2).
61. Transportable concrete mixing plant (10) according to one of claims 35 to 43, characterized by a metering attachment for enlarging the effective catching cross section of a hopper of a metering unit of a metering-unit container, wherein the metering attachment is formed by a stackable metering container which can be divided into two halves and whose halves, stacked beside each other on the metering unit, extend the inclined walls of the hopper upwards by means of fixed baffle plates in the interior of the halves and baffle plates which can be folded outwards.

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