EP1144168A2

EP1144168A2 - Container concrete mixing plant

Info

Publication number: EP1144168A2
Application number: EP00902619A
Authority: EP
Inventors: Alexander Von Wilcken
Original assignee: Walter-Heilit Verkehrswegebau GmbH
Current assignee: Heilit+Woerner Bau GmbH
Priority date: 1999-01-19
Filing date: 2000-01-19
Publication date: 2001-10-17
Anticipated expiration: 2020-01-19
Also published as: AU757880B2; US6832851B1; DK1520672T3; EP1144168B1; AU2438900A; EP1520672B1; DE50013871D1; KR20010089607A; TW446612B; ATE293527T1; ATE347984T1; PL349764A1; EP1520672A1; DE20023531U1; KR100570264B1; MY127676A; WO2000043178A2; WO2000043178A3; DE19901904A1; DE50010103D1

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

Container concrete mixing plant

description

The present invention relates to a transportable concrete mixing plant in which preferably all components can be transported in standard shipping containers.

Transportable concrete mixing plants are used by construction companies on construction sites whose concrete requirements cannot be met in a meaningful manner by transporting concrete mixed in elsewhere (e.g. in stationary ready-mixed concrete plants), for example with the help of the known concrete mixing vehicles. This case can be seen on large construction sites, e.g. B. in the context of transport projects, where the concrete requirement is extremely high. However, transporting concrete by means of concrete mixing vehicles cannot make sense even in very remote construction sites, so that a concrete mixing plant is also required on site in this case.

For this reason, numerous construction companies have transportable concrete mixing plants that are set up at a construction site for the production of concrete on site. Such concrete mixing plants are for this purpose formed from a plurality of releasably connectable mixing plant components, which individually, for. B. with the help of trucks, transported to the construction site and assembled there.

Here, the problem often arises that the mixing plant components, such as. B. concrete mixers, cement silos, conveyor belts and the like, have unusual dimensions due to their function, which makes their transport, for example on trucks, difficult. Special permits are often to be applied for, resulting in additional costs and Appointment problems. When transported by cargo ship or freight train, as is required by nationally or even globally operating construction companies, these unusual dimensions, widths and the like of the mixing plant components lead to considerable costs and delays in transport.

It is therefore an object of the invention to provide a transportable concrete mixing plant, the components of which can be transported more quickly and inexpensively without the need for means such as. B. use packaging devices or wrapping materials that are not required for the actual operation of the concrete mixing plant and would therefore cause unnecessary costs and increased space requirements at the construction site.

According to the invention, this object is achieved by a transportable concrete mixing plant comprising a plurality of mixing plant components which can be connected to one another in a detachable manner and which are accommodated in a plurality of containers during transport, at least some of these containers, preferably all of these containers, in the operating state of the mixing plant as Support structure for mixing plant components and / or containers for concrete raw materials are used.

The invention offers the advantage that the containers containing the mixing plant components can be loaded quickly worldwide at loading stations at ports, train stations, etc. with the help of cranes and the like present there for this purpose. In addition, the transport of containers with the help of cargo ships, freight trains, trucks and the like does not pose any difficulties, so that a relatively quick and inexpensive transport of the mixing system components is possible even over great distances. The invention also offers the advantage that the containers protect the mixing plant components during transport and also offer transport volume for the sending of equipment additionally 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. B. supplements, binders, water, additives and additives, the advantage that no separate devices have to be carried for this purpose. The containers can 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 transport costs and also always ensures that all the components required to operate the concrete mixing plant are complete.

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

In order to be able to use the supporting structure or container function of the containers in a simple manner, it is provided that at least some containers have visible hatches through which mixing system components which are at least partially accommodated in different containers can interact in the operating state of the mixing system. After the transport, the containers are first placed next to each other or one above the other at the specified relative positions at the construction site, then the Hatches are opened in the walls of the containers and the mixing system components contained in the respective containers are possibly pulled out through the opened hatches in such a way that they can interact in the operating state of the system. This offers the advantage that it is generally not necessary to lift mixing system components out of their respective containers.

To implement a portable concrete mixing plant according to the invention, it is proposed that it has at least one mixer container which contains at least one concrete mixer for mixing aggregates, preferably cement-containing binders, water and additives and additives for the production of concrete, and by cultivating appropriate components can be expanded so that the performance is increased according to the requirements of the construction site, e.g. B. Expansion from 1 to up to 4 mixers with a corresponding increase in the number of silos, dosing devices, conveying devices etc. As a concrete mixer, in order to achieve high concrete production speeds in construction technology, e.g. Double shaft mixers known per se are used, which are filled from above with additives and binders and which have an optionally closable bottom emptying opening at the bottom for removing 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 open hatch above each mixer. Through this hatch, which is open in the operating state, the aggregates and the binders as well as any additives are fed to the concrete mixer.

In an advantageous further development of a transportable concrete mixing plant of this type, it is proposed that it have at least one in Operating state of the mixing system on the mixer container arranged mixer top container includes, the feeder for introducing binder, preferably cement, and aggregates and any additives in each mixer through the open hatches located in the upper wall of the mixer container and through this Contains hatches located opposite each other in the bottom wall of the mixer top container. In the simplest case, these feed means could consist of a tube which opens into the concrete mixer from above through the open hatches.

However, it is advantageously provided that the feed means for each mixer comprise a pre-silo for additives and a pocket for binders and optionally for additives, which can each be approximately funnel-shaped.

For precise dosing of the binder and possibly the additives, it is advisable that the bag contains a scale. When a predetermined quantity is reached, the bag delivers its contents to the concrete mixer.

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

Since the funding generally runs at least in sections outdoors, the binder or additive that it is promoting must be used

Protect rain, wind, etc. For this reason, it is advantageously provided that in the mixer top container leading funding is a screw conveyor. In such a screw conveyor, a screw drive rotates in a tube, which protects the material from the influences mentioned. If this protection is ensured by other measures, the funding may also be designed as a conveyor belt.

An effective supply of aggregates can be ensured in a further development of the invention in that when using at least two mixers, an aggregate conveying means with optionally switchable running direction for supplying the aggregates to the feed means assigned to each mixer is provided. The aggregate funding is arranged such that each of its two ends is above a loading device. If the aggregate funds are fed the aggregates between its two ends, then by alternately switching the direction of the aggregate funding means, one feeder can be supplied with aggregates.

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 funding can be moved back and forth between the operating means for the aggregates between several operating positions in which each end of the aggregate funding means is assigned to a charging means for aggregates is. Thus, for example, four mixers arranged substantially equidistantly in a row, or the feed means assigned to them, can be supplied with aggregates by moving the aggregate conveying means back and forth between two operating positions and by using both running directions of the conveying means in each operating position. Since the additional funding runs substantially protected inside the mixer top container, it is provided for the sake of simplicity that the additional funding is a conveyor belt.

Appropriately, in the transportable concrete mixing plant according to the invention, at least one wall of the mixer-top container is provided with steep conveying means through an open hatch for introducing the aggregates into the mixer-top container. This steep conveyor receives the surcharges essentially at the level of the stand of the transportable concrete mixing plant according to the invention and conveys them to the surcharge conveyor described above in the mixer top container standing on the mixer container.

Since this aggregate conveying process requires a length of the steep conveyor, which may exceed the length of a standard ship container, it is provided in an advantageous development of the invention that the steep conveyor is a conveyor belt which is accommodated in a folded conveyor belt container during transport in the folded state . Such folding of the steep conveyor belt can be achieved by a plurality of joints in a steep conveyor belt frame carrying the steep conveyor belt.

As explained above, mixers with bottom emptying are expediently used. In this case, it is provided that the bottom wall of the mixer container in the operating state has a hatch under each mixer which can be opened to remove concrete from the mixer container. Concrete can thus be removed from the mixer through the open hatch in the lower wall of the mixer container.

This design is particularly advantageous if the mixer container is set up on a base of a mixer frame, which is dimensioned such that concrete can be removed through the hatches that are revealed Concrete can be discharged from the mixer container into a truck or the like provided under the stand area. 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 for two trucks to be provided “back to back” under the base area of the mixer frame and to be loaded with concrete simultaneously or immediately one after the other .

Instead of using such a mixer frame, however, it is also possible that the mixer container is in the operating state of the system on a loading container, in the top wall of the open hatches of the bottom wall of the mixer container opposite open hatches are provided. In this case, the concrete released by the mixer falls into the loading container and has to be transported from there.

This onward transport can be ensured by the fact that an open hatch is provided on an end wall of the loading container, which is used by a concrete conveying device for conveying the concrete that is completely accommodated in the loading container during transport, for example to a truck or the like provided next to the loading container , is enforced. Similar to the steep conveying device presented above, this concrete conveying device could be a conveyor belt folded up during transport and stretched out for operation.

A simpler and more cost-effective design, however, consists in the fact that the concrete conveying device comprises an upper concrete collecting belt which is completely accommodated in the loading container in the operating state and a lower concrete conveyor belt which penetrates the apparent hatch in the end wall of the loading container in the operating state. The concrete released from the mixer container falls first on the upper concrete collection belt and at the end of it on the lower concrete conveyor belt below, which conveys it out of the loading container.

In a further development of the concrete mixing plant according to the invention, it is provided that it comprises at least one binder silo container as a storage means for binders or the like and optionally a corresponding silo container for concrete additive. It is precisely this use of a container as a binder silo that greatly simplifies the transport of a transportable concrete mixing plant, since conventional binder silos cause difficulties during loading and transport due to their size and their shape, which is generally characterized by a round cross section.

It is expediently provided here that each binder silo or additive silo container stands upright on its end face. This structure reduces the space required on the construction site and makes it easier to remove binders from the binder silo container.

In construction sites with a large concrete requirement, it is provided that at least two binder silo or additive silo containers are placed next to or on top of each other. The possibility, which is usually not available in conventional binder silos, but can be easily implemented when using binder silo containers, of stacking such storage means for binders in an upright orientation allows the provision of a large supply of binder with a small space requirement on the construction site. If two binder silo containers are set up on top of each other, a continuous binder silo can be formed from them by opening hatches in the end walls lying one on top of the other.

The problem of the overturning of a largely emptied silo known from conventional binder silos, for example in the case of heavy ones To solve wind, it is provided in the concrete mixing installation according to the invention that each upright binder silo or additive silo container is fastened for stabilization by means of cross struts on the mixer top container and / or on the mixer container and / or on the loading container or on the mixer frame is. This type of attachment results in a much greater stabilization of each binder silo container than the attachment to the floor that is normally used in conventional binder silos.

To provide a flat base for the upright oriented silo container and to further stabilize it, it is provided that each silo container not standing on another silo container and the loading container or the mixer frame are attached to a common base plate. In the simplest case, this base plate can consist of an arrangement of supports, for example double-T supports made of steel.

To remove the binder or additive from the silo containers, it is preferably provided that each silo container not standing on another silo container contains a funnel in its lower region in the operating state, the upper cross section of which essentially corresponds to the cross section of the silo container corresponds and which tapers towards the bottom.

The walls of this funnel can be formed from sheets which run obliquely away from the side walls of the silo container and, during operation, run downwards towards one another, which in this arrangement are rigidly fastened in the silo container, or they can be transported on walls of the silo container. Containers are in contact and folded out in the operating state in the described working position.

For security reasons, it can also be provided that each silo container not standing on another silo container at its Operating state bottom end face has a concrete slab for stabilization. Such a concrete slab is expediently rigidly attached to the corresponding end face.

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

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 from the weather in this area of the concrete mixing plant according to the invention.

For the further transport of the binder or additive, it is provided that the binder or additive conveying agent interacts with a vertical conveying means which runs essentially vertically or obliquely upwards on an outer wall of the silo container in such a way that it binds this binder or additive Can pass on, advantageously also the vertical or inclined conveying means is a screw conveyor.

It is provided here that the vertical or inclined conveying means interacts with the binder or additive conveying means, which partially runs in the mixer attachment container, in such a way that it transfers this binding agent or additive for further conveying. Such a transfer of binding agent from one screw conveyor to another screw conveyor can be ensured in that the pipes surrounding the two screw conveyors have openings that are close to each other, between which runs a slide designed as a pipe or a chute.

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

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

To complete the equipment of the concrete mixing plant according to the invention it is provided that a concrete paver and / or a work platform or the like is accommodated 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 also be transported without problems. This also reduces the transport costs for these machines, especially for sea transports, because otherwise these machines cannot 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 aggregates. The additions are dosed in the dosing unit container in coordination with the above-described dosing of the binder or additive in the binder pocket. The additional quantity metered in this way can be checked and, if necessary, corrected using an additional scale in the front silo for additional quantities in the mixer top container. A simple design of such a metering device is possible if the metering device for aggregates has at least one weighing conveyor belt for weighing and transporting the aggregates and at least one loading means assigned to the weighing conveyor belt. Such weighing conveyor belts for simultaneous weighing and transporting a material are known per se and are not described further here.

In order to enable a reliable and rapid supply of aggregates through the loading means to the weighing conveyor belt, it is provided according to the invention that each loading means is formed by a funnel arranged above the weighing conveyor belt, which tapers downwards and upwards to one reveal hatch in the upper side wall of the dosing unit container, which opens when open. In this way, supplements can be introduced into the upper opening of the funnel, for example by a wheel loader, without having to pay particular attention to this filling.

It is possible to add only a certain grain size to each hopper. These various aggregates can then be released one after the other onto the weighing conveyor belt, which weighs the aggregates of each grain group and ensures their metering in a predetermined ratio. However, it is also possible to carry out the desired mixing of the aggregates with different grain groups outside the dosing unit container and to fill this mixture into each funnel of the dosing unit container.

A further simplification of this filling as well as the possibility of filling with several wheel loaders at the same time is given if each dosing unit container is assigned a dosing unit container of essentially the same length, the halves of which, in the operating state, are placed next to one another parallel to the dosing unit container and which with the help of a baffle device and open hatches in on the upper side wall of the dosing unit container and on the lower side of each half of the dosing unit container increase the effective upper filling cross section of each funnel in the dosing unit container.

In this embodiment, it is preferably provided that the baffle device comprises fixedly arranged, inclined baffle plates in the metering container, which in the operating state extend the walls of each funnel in the metering unit container upwards into the halves of the metering container. This measure makes it possible to approximately double the upper filling cross section of each funnel in the dosing unit container compared to a version without a dosing top container.

A further enlargement of the upper filling cross-section of each funnel can be achieved if the baffle plate device further comprises baffle plates, which are rotatably mounted essentially at corners of the halves of the dosing unit container and are folded out of the dosing unit container in the operating state in such a way that they open the funnel enlarge above. Overall, this allows an upper filling cross-section to be achieved, which allows the metering device to be filled simultaneously for aggregates with several wheel loaders.

In order to further convey the surcharges metered and transported with the aid of the cradle conveyor belt, it is provided according to the invention that in the metering unit container also a longitudinally running under the cradle conveyor belt in the longitudinal direction through an open hatch in an end face of the metering unit container the dosing unit container shiftable task funding is provided. This task funding is completely contained 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 funding can also be a conveyor belt.

For the further transport of the aggregates, it is preferably provided according to the invention that the end of the feed conveying means located outside the metering unit container in the operating state is arranged above the steep conveying means for the supply of aggregates to the mixer top container. The surcharges therefore fall at the end of the feed conveying means located outside the dosing unit container onto the above-described steep conveying means. In order to largely avoid "falling" of aggregates, 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 can additionally comprise an admixture container for receiving concrete admixtures. As is known in construction technology, the choice of such additives depends on the intended use of the concrete to be produced.

In a further development of the portable 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 accommodated. Control stations of this type for essentially computer-aided monitoring and control of concrete mixing plants are known in construction technology and are not explained further here.

Furthermore, the concrete mixing plant according to the invention can additionally comprise a water container for holding the water required for the production of concrete or a container which holds water and / or concrete admixtures. The portable concrete mixing plant according to the invention can be covered, insulated, partitioned off, heated or heated (with warm air, hot steam, heating spirals etc.) of the individual mixing plant components (in particular the mixer container including the mixer top container, conveyor belts, dosing unit container, additive). and water containers including delivery lines) enable mixed operation even at ambient temperatures below zero degrees Celsius.

In a further development of the transportable concrete mixing plant according to the invention it can be provided that it has a pressure delivery device, preferably a compressed air delivery device, for pressure delivery from at least one silo container. Such a pressure conveying device is particularly advantageous when other conveying devices, such as screw conveyors, are exposed to high wear and / or a high risk of clogging due to the respective operating circumstances, 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 binders or additives into a silo container.

In an advantageous embodiment of such a pressure delivery device, it is provided that it comprises a collection vessel with a compressor and a delivery hose connected to the collection vessel. Of course, these components of the pressure conveyor device can also be accommodated in a container during transport.

In principle, it is possible with this structure to convey binders or additives through the conveying hose directly to a binder pocket in a mixer top container. However, since the conveyance of pressure of such substances into a binder pocket could falsify the weighing of the substance taking place in it, it is advantageously provided that the concrete mixing arrangement according to the invention has at least one binder. Has intermediate container for the intermediate storage of binder, which is preferably placed on at least one mixer top container, the conveyor hose advantageously opening into the at least one intermediate binder container. In this case, such a binder intermediate container set up on a mixer attachment container also has hatches through which the conveying hose opens into it when the transportable concrete mixing system according to the invention is in the operating state, or through which the conveyed substance is fed to a binder pocket assigned to a mixer can.

This supply preferably takes place in such a way that the at least one intermediate binder container contains a funnel which opens into a cellular wheel sluice which is arranged above a binder pocket in a mixer attachment container. Such a rotary valve works in a similar way to a revolving door provided in buildings and allows the binder or additive to be fed into the binder pocket without pressure being applied by the pressure conveying device. Cell wheel locks of this type are known per se in the art and will therefore not be explained in more 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 collecting vessel can be permanently installed in the respective silo container, while the compressor and the conveying hose are transported in the same or in another container in the transport state of the concrete mixing plant. 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 binding agent or additive. In a further development, the transportable concrete mixing plant according to the invention can have binder silo and / or additive silo containers that are stacked parallel to one another in the operating state with an essentially horizontal orientation. Such a "lying" orientation of silo containers with an essentially horizontal longitudinal axis of the container means, in contrast to the upright orientation of silo containers explained above, an increased space requirement, but enables a more stable and better protected placement of the silo containers from tipping over . Such a horizontal arrangement of silo containers can therefore be provided, for example, on construction sites where the silos have to meet increased stability requirements due to strong winds.

In order to make a continuous binder or, respectively, from such silo containers stacked parallel to one another with a substantially horizontal orientation. To form an additive silo, these silo containers can in turn be equipped with open hatches. Since in parallel stacking a silo container with its relatively large floor space is set up on a parallel, essentially the same size ceiling surface of a silo container underneath, and the size of conventional open hatches in container areas is generally limited, one must be ensured good binder or additive flow from upper to lower silo containers advantageously provided that the binder silos and / or additive silo containers stacked parallel to one another with essentially horizontal orientation each have removable floor and ceiling surfaces. In the case of such silo containers, not only are hatches opened in the floor or ceiling surfaces of the containers in the operating state of the concrete mixing plant according to the invention, but rather these floor and ceiling surfaces are completely removed. This avoids the appearance of corners and niches within a silo, in which binders or additives could accumulate. Since a silo constructed in this way must also be closed at the top and bottom in the operating state, it is expediently provided that the transportable concrete mixing plant has a silo closure container which can be divided essentially into two halves, the halves of which in the operating state are the bottom or the top container of a group form silo containers stacked parallel to each other. In this case, those components that the bottom and top containers should contain in the operating state of the system can be attached to the separable silo closure container. For example, the uppermost container of the silo can have a filter which filters out binders and / or additives from the air displaced when the silo is filled. The lowest container can contain the components already described above, which are required to challenge binders and / or additives from the silo, for example by means of a screw conveyor or a pressure conveyor device.

Alternatively or preferably in addition to the described use of silo containers or intermediate binder containers, which serve as containers for concrete starting materials, it can be provided in an advantageous further development of the transportable concrete mixing plant according to the invention that preferably at least one intermediate binder container in a mixer top container is arranged for the intermediate storage of binder, wherein advantageously a binder conveying member, preferably a binder screw conveyor, is arranged for conveying binder from the at least one intermediate binder container into a binder pocket in the mixer attachment container. This ensures 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 intermediate binder containers is temporarily interrupted, for example when it is being filled. In this case, the binder pocket in the mixer attachment container can be supplied with binder from the intermediate binder container via the binder conveyor. It is understood that depending from the relative arrangement of the binder pocket and the binder intermediate container, the binder conveying member, for example, also through a chute, a simple hose, a pressure conveying device and the like. Like. Can be formed.

In order to be able to supply the mixer with binders and / or additives in as many different ways as possible and thus to be able to switch flexibly between different binder supply states of the system, it is advantageously provided that the transportable concrete mixing system according to the invention for conveying binders and / or additives are formed from a silo container and / or a transport vehicle into an intermediate binder container and / or an intermediate binder container, preferably having a screw conveyor arrangement and / or a pressure delivery device. The screw conveyor arrangement and / or the pressure conveyor device can, as described above, be attached in a stationary manner to or in one or more silo containers in order to convey binders or additives from the silo into an intermediate container in a mixer top container or into an intermediate container , which is placed on a mixer top container. Such a screw conveyor arrangement or pressure conveyor device can, however, 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 implementation of the transportable concrete mixing plant according to the invention, it can be provided that a mixer container in the operating state of the plant is set up at its ends on at least one other container in such a way that concrete can be taken through the open hatches for removing concrete from the mixer container a truck or the like provided under the mixer container can be lowered. As in the case of installation on a Mixer scaffold can also be used to drain the concrete made in the mixer directly into the truck provided when the mixer container is set up in this way. Furthermore, mixer containers with a plurality of mixers, which may be too heavy to be placed on a mixer stand, can also be set up safely and without stability problems with their ends on at least one other container in the manner described. It goes without saying that the at least two other containers on which such a mixer container is installed can be formed by almost any other container of the concrete mixing plant according to the invention, for example by control station containers and / or water containers and / or containers for concrete admixtures .

The invention further relates to the use of a container, preferably a 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 by cargo ships, freight trains, trucks, etc. In addition, the use of containers as binder silos offers the possibility of assembling several, usually stacked, containers into larger silos.

The invention further relates to a method for securing a binder. Additive silos, preferably a container used as a binder silo, a concrete mixing system against falling over, in which the binder silo is attached to components of the concrete mixing system by means of cross struts. This type of fastening leads to greater stability than the conventional fastening on the ground and thus reduces the risk of a largely empty binder silo falling over in strong winds or other vibrations.

In addition, the invention relates to a conveyor, preferably a conveyor belt, with an optionally switchable conveying direction can also be moved back and forth in the longitudinal direction between different operating positions. Such a conveying means represents a fast-working and space-saving device for distributing substances from one feed device to several, in particular more than two, essentially adjacent holding devices.

In addition, the invention relates to a metering attachment for increasing the effective collecting cross-section of a funnel of a metering unit, preferably the metering unit container of the transportable concrete mixing plant described above, which is characterized in that the metering attachment is formed by a metering attachment container which can be divided into two halves, the side by side Halves placed on the dosing unit by means of fixed baffles inside the halves and baffles that can be folded outwards continue the inclined walls of the funnel upwards. The resulting enlargement of the effective collecting cross section of the funnel reduces the risk of the material to be filled "falling apart" and thus allows the funnel to be filled faster and simultaneous filling with the aid of several feeds, eg. B. in the form of wheel loaders.

The invention is explained below using preferred exemplary embodiments with reference to the drawing. It shows:

1 shows a side view of a first embodiment of the transportable concrete mixing plant according to the invention with a

Mixer in operating state; FIG. 2 shows a top view of the concrete mixing plant according to FIG. 1;

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

FIG. 4 shows a top view of the concrete mixing plant according to FIG. 3; 5 shows a side view of a third embodiment of the portable concrete mixing plant according to the invention with four mixers in the operating state; FIG. 6 shows a top view of the concrete mixing plant according to FIG. 5; FIG. 7 shows a partial front view of the concrete mixing plant according to FIG. 5;

8 shows a side view of the dosing unit container of the transportable concrete mixing plant according to the invention in the transport state; 9 is a front view of the dosing top container of the transportable concrete mixing plant according to the invention in FIG

Transport condition; Fig. 10 is a side view of a lower binder silo container of the transportable concrete mixing plant according to the invention in the transport state; Figure 1 1 is a side view of an upper binder silo container of the transportable concrete mixing plant according to the invention in the transport state; 1 2 is a side view of another upper binder silo

Containers with a concrete paver in transport condition; 1 3 is a front view of the binder silo container according to FIG.

1 2; Figure 1 4 is a side view of a further embodiment of the portable concrete mixing plant according to the invention with a compressed air delivery device. Fig. 1 5 is an enlarged partial side view of the silo container

Embodiment of Fig. 1 4; and Figure 1 6 is a plan view of the silo container cut along line A-A in Figure 1 5; 17 shows a side view of a further embodiment of the transportable concrete mixing plant according to the invention with a

Binder intermediate container and a screw conveyor arrangement; Fig. 1 8 is a plan view of the concrete mixing plant of Fig. 1 7

Using a mixer;

Fig. 1 9 is a plan view of the concrete mixing plant of Fig. 1 7

Using two mixers; 20 shows a side view of a further embodiment of the transportable concrete mixing plant according to the invention with an intermediate binder container in a mixer top container;

FIG. 21 is a top view of the concrete mixing plant of FIG. 20 when using a mixer;

Fig. 22 is a plan view of the concrete mixing plant of Fig. 20 in

Use of two mixers.

For simpler and clearer representation, those containers which contain components described below are each shown open to the viewer in the figures, i.e. the side or front wall of the container facing the viewer has been removed.

1 shows a side view of a first embodiment of the concrete mixing plant according to the invention, in which a mixer 1 2 is used. On the right in FIG. 1, one can see a lower binder silo or additive silo container C7, which is placed upright on a base plate 14 on an end face and on which an upper silo container C8 is also placed upright. By opening hatches in the superimposed end faces of containers C7 and C8, a continuous, larger silo can be formed from them. It is of no importance for these or for the disclosed 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 the open hatches will not be described in detail in the further course. The lower silo container C7 has a funnel 16 in the area of its lower end in FIG. 1, which opens onto a lower screw conveyor 18. This passes through the left side wall of the lower silo container C7 in FIG. 1 through a hatch L7 and conveys binder or additive out of it to a vertical screw conveyor 20, which on the left side wall of the lower silo container C7 in FIG upper silo container C8 is attached and runs essentially up there. In the lower area of the upper silo container C8, the vertical screw conveyor 20 interacts with an upper screw conveyor 22 and transfers its binder or additive for further transport.

The upper screw conveyor 22 passes through the right side wall of the mixer top container C3 in FIG. 1 through an open hatch L3a provided in this side wall and ends above a binder pocket 24 provided in the mixer top container C3, into which the binder conveyed by the upper screw conveyor 22 or additive falls. Through open hatches L3 and L2 in the lower bottom wall of the mixer top container C3 and in the upper ceiling wall of the mixer container C2 standing under the mixer top container C3, the binder pocket 24 guides the mixer 1 2 arranged in the mixer container C2 into a metered amount of binder or additive, for which purpose a scale may be installed in the binder pocket 24.

As can be seen in FIG. 1, various means for increasing the stability of the binder silo are provided in the embodiment shown: on the one hand, a concrete slab 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 to the mixer top container C3 and to the mixer container C2 with several cross struts 28. In order to enable safe working on and on this silo in addition to the safe installation of the binder silo, several ladders 30 and railing devices 32 are provided on the upper silo container C8.

The metered supply of aggregates to the mixer 1 2 begins in the operation of the portable concrete mixing plant 10 according to the invention with a dosing unit container C5, which has a dosing device 34 for dosing the aggregates. As can be seen in FIG. 8, the metering device 34 for aggregates comprises a weighing conveyor belt 34a for weighing and transporting the aggregates and a plurality of loading means 34b for feeding the aggregates to the weighing conveyor belt 34a. As can be seen in FIG. 8, each loading means 34b is formed as a funnel, which tapers downwards and opens upwards to an open hatch in the upper side wall of the metering unit container C5 in FIGS. 1 and 8. Thus, the surcharges, which are usually introduced in large quantities with wheel loaders, do not have to be deposited precisely on the weighing conveyor belt 34a, which is relatively narrow in comparison to the dosing unit container C5, but can simply be shown in FIG. 8 above over the entire side surface of the Dosing unit container C5 can be thrown into this, which reduces the risk of "falling apart" of aggregates and thus allows faster loading of the weighing conveyor belt 34a.

In the embodiment of the dosing unit container C5 shown in FIG. 8, a mixture of aggregates with different grain groups, which was previously assembled in the correct ratio, can be filled into each hopper 34b. Alternatively, a certain hopper 34b can be assigned to each grain group, so that in this case aggregates with four different grain groups can be mixed in the embodiment of the dosing unit container C5 shown in FIG. 8. In order to further enlarge the upper filling cross-section of each funnel 34b in the metering unit container C5 in such a way that even a simultaneous supply of additives with several wheel loaders is possible, the metering unit container C5 is a metering attachment container C6 with essentially the same length assigned. In the operating state, this dosing top container C6 is broken down or opened, which are placed next to one another and parallel to the dosing unit container C5. Oblique baffle plates 36 are fastened in the metering attachment container C6, which extend the walls of the funnels 34b through open hatches L5 or L6 in the upper side wall of the metering unit container C5 and in the lower side wall of each half of the metering attachment container C6. As can be seen in the side view of FIG. 1, the effective filling width of the arrangement of funnels 34b is essentially doubled as a result, which corresponds to a doubling of the effective upper filling cross section of each funnel 34b.

In order to enlarge this filler cross-section even further, additional baffle plates 38, which are rotatably mounted essentially at corners of the halves of the metering attachment container C6, are folded upward out of the metering attachment container C6. The shape of these fold-out baffle plates 38 is expediently adapted to the direction from which the additions of the aggregates are mainly intended to take place. Thus, the fold-out baffles 38 used in the embodiment of FIGS. 1 and 2 extend the opening of the funnels 34b substantially upward to the right, since the addition of aggregates by one or more wheel loaders 40 essentially from the left, as shown in FIG. 2 he follows.

The additions fed through the funnels 34b, which are enlarged upwards by the mentioned baffle plates 36 and 38, fall on the weighing conveyor belt 34a shown in FIG. 8, which uses a built-in scale (not shown) to determine a predetermined rate of additions transported to a task conveyor 42. This task conveyor belt 42 is in the transport state shown in Fig. 8 of the dosing unit container C5 under the weighing conveyor 34a and parallel to this. 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 metering unit container C5 in the plan view of FIG. 2. In this operating state, the feed conveyor belt 42 protrudes so far below the weighing conveyor belt 34a that it can reliably accept the surcharges falling at the right end in FIG. 8.

As can be seen in FIGS. 1 and 2, the end of the feed conveyor belt 42 located outside the dosing unit container C5 is arranged above a steep conveyor belt 44 for supplying the aggregates to the mixer top container C3. In order to prevent aggregates from "falling apart" at this end next to the steep conveyor belt 44, the latter can expediently be provided at its lower end with an aggregate collecting device 46 designed as a baffle plate, chute or the like. As indicated in FIG. 1 by a dashed line, the steep conveyor belt 44 is completely accommodated in a steep conveyor belt container C4 when the concrete mixing plant according to the invention is transported in the folded state. 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 an upper deflection roller 44a located at this end is rotatably attached to the mixer top container C3 in such a way that this end of the steep conveyor belt 44 is above the im Mixer top container C3 arranged feed means 46 for surcharges. A lower deflection roller 44b, via which the steep conveyor belt 44 is expediently also driven, is further arranged in the steep conveyor belt container C4. In order to stabilize the steep conveyor belt 44, further deflection rollers 44c may be provided between the upper deflection roller 44a and the lower deflection roller 44b, as indicated in FIG. 1. In order to avoid scatter losses at the upper end of the steep conveyor belt 44 in the region of the upper deflection roller 44a when aggregates fall down into the pre-silo 48 above the mixer 1 2, a baffle plate 50 can be attached to the mixer top container 03 in such a way that it comes from the steep conveyor belt 44 promoted supplements in the pre-silo 48 directs.

As shown in FIG. 1, the mixer container C2 containing the mixer 1 2 is set up on a standing surface of a mixer frame 52, which stands next to the lower binder silo container C7 on the base plate 1 4. This mixer frame 52 is dimensioned such that concrete produced by mixer 1 2 can be discharged through a lower floor drain opening 1 2a of mixer 1 2 and open hatches L2a in the base surface of mixer container C2 into a truck 54 provided under the base. With the help of one or more such trucks 54, the freshly produced concrete can be transported to the respective place of use on the construction site.

The first embodiment of the transportable concrete mixing plant according to the invention shown in FIGS. 1 and 2 further comprises an individually placed water and / or additive container C1 1. The supply of water and / or additives to the mixer 1 2 with the aid of pumps and an arrangement of pipelines or hoses is known per se in concrete mixing plants and is therefore not discussed in detail.

As can be seen in the top view of FIG. 2, in this first embodiment the mixer top container C3 and the control container C1 0 are combined to form a container, preferably a standard shipping container, which has the same dimensions as the mixer container C2, on which it stands. Of course, it is also possible to separate the containers C3 and 01 0 from one another during operation, for example around the control container C1 0 at another location, which offers a better overview of the concrete mixing plant 10 according to the invention. to set up. Alternatively, it is of course also possible to install the components of the concrete mixing plant according to the invention, which are normally accommodated in different containers C3 and C10, from the outset in a single container.

A second embodiment of the portable 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 larger concrete production because it uses two mixers. Components of this second embodiment, which are identical or functionally identical to components of the first embodiment, are provided with the same reference numerals in FIGS. 3 and 4 as in FIGS. 1 and 2.

In the second embodiment shown in FIGS. 3 and 4, the mixer container C2 contains two mixers 1 2, which are preferably of identical construction. To supply these two mixers 1 2 with binder, all components of the first embodiment serving this purpose are provided twice in the second embodiment. 3 and 4, two lower silo containers C7 can be seen, on each of which there are upper silo containers C8. As in the first embodiment, a lower silo container C7 and an upper silo container C8 each form a larger silo, from each of which a mixer 1 2 via a hopper 1 6, a lower binder screw conveyor 1 8, and a binder vertical screw conveyor 20, an upper binder conveyor screw 22 and a binder pocket 24, optionally provided with a balance, are supplied with binder in a mixer attachment container C3.

The addition of aggregates to two feed silos 48 for aggregates, each of which is assigned to a mixer 1 2, also takes place in the second embodiment of the concrete mixing system 1 0 according to the invention again via a metering top container C6 provided with baffle plates 36, 38, and one in a dosing unit container C5 mene metering device 34 with loading means 34b and a weighing conveyor 34a and a feed conveyor 42 which transports the aggregates to a steep conveyor 44.

In order to be able to distribute the aggregates falling at the upper end of the steep conveyor belt 44 in the area of its upper deflecting roller 44a to the two feed silos 48 for aggregates, an essentially horizontally extending aggregate conveyor belt 56 is installed in the mixer top container C3, the ends of which are each above one of the two pre-silos 48 are arranged. The running direction of the aggregate conveyor belt 56 can be optionally switched so that the aggregates falling from the steep conveyor belt 44 can be supplied to one of the two preloaders 48 depending on the operating state of the two mixers 1 2 or the fill level of the aggregates in the preliminary silos 48.

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 base of a mixer frame 52. Thus, in this embodiment as well, concrete can be poured from each mixer 1 2 into one or, if appropriate also several "back to back", d. H. lorries with their rear ends oriented towards each other.

3 and 4 that the control container C1 0, in contrast to the first embodiment of FIGS. 1 and 2, is now not placed on the mixer stand 52, but on the additive container C9, for reasons of space. Of course, the control container C10 can also be set up at another location that provides a good overview of the concrete mixing plant 10 according to the invention.

A third embodiment of the portable 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 required. 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 of which contains two mixers 122. In operation, the two mixer containers C2 are set up next to one another, as can be seen in FIG. 6, and hatches in the adjoining end faces of the two mixer containers C2 are opened such that the total of four mixers 1 2 are essentially in a row. A mixer top container C3 is set up on each mixer container C2, which is essentially identical to the mixer top container C3 shown in FIGS. 3 and 4 and thus contains a pre-silo 48 for surcharges and a binder pocket 24 for each mixer 1 2 .

In the third embodiment, too, a complete group of components for supplying binder or additive is assigned to each mixer 1 2. H. the silo containers C7 and C8 as well as the screw conveyors 1 8, 20 and 22.

In order to be able to meet the high demand for aggregates in this third embodiment of the invention, the group of components for metering and supplying aggregates known from the first two embodiments, comprising a dosing unit container C6, a dosing unit container C5 and that for transport components included in them, twice present here. As can be seen in Fig. 6, the steep conveyor belt 44 aggregates are thus fed from two feed conveyor belts 42.

To distribute the surcharges falling in the region of the upper deflection roller 44a from the steep conveyor belt 44 to the four mixers 1 2, the conveyor belt known from FIGS. 3 and 4 with an optionally switchable running direction in this embodiment has been further developed into an additional conveyor belt 56 which has between several operating positions can be moved back and forth in to which each end of the overhead conveyor belt 56 is assigned a pre-silo 48 for overheads. Thus, in FIG. 7 the aggregate conveyor belt 56 is in an operating position in which, by switching its direction of travel, it supplies the two preliminary silos 48 for aggregates, which are assigned to the two mixers 12 of each mixer container C2 on the left in FIG. 7. By moving the aggregate conveyor belt 56 on rollers 58 schematically indicated in FIG. 7, it can be shifted into a second operating position in which it supplies the two feed silos 48 for aggregates, the two mixers 1 2 on the right in FIG. 7 of each mixer - Containers C2 are assigned.

The removal of the concrete produced takes place in the third embodiment of the invention shown in FIGS. 5 to 7 in a different way than in the first two embodiments, since the two mixer containers C2 containing a total of four mixers 1 2 generally do not open due to weight reasons a mixer stand can be provided. Instead, the two mixer containers C2, as can be seen in FIG. 5, stand on a loading container C1, in the top wall of which the open hatches L2a, the open hatches L2a of the bottom wall of each mixer container C2, are provided. Through these open hatches L2a, L1, concrete 10 released by the mixers 1 2 falls onto an upper concrete collecting belt 60 completely accommodated in the loading container C1 during operation of the system 10 according to the invention. The concrete conveyed in the running direction by this upper concrete collecting belt 60 falls at the end of the upper concrete collector - belts 60 on a lower concrete conveyor belt 62. This lower concrete conveyor belt 62 is also completely accommodated in the loading container C1 during transport and is operated so far through an open hatch L1 a in the front wall of the loading area in FIG. Container C1 pulled out that at its end remaining in the loading container C1, it can safely pick up the concrete falling from the upper concrete collection belt 60 and transport it to a truck 54 provided next to the loading container C1. The arrangement of the lower concrete conveyor belt 62 within the loading container C 1 during transport is shown in dashed lines in FIG. 7.

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 has been removed to simplify the illustration. One recognizes the funnel 16, which is firmly attached in the lower silo container C7, and the concrete slab 26, which is firmly attached to its right-hand end face in FIG. 10 for stabilization purposes disassembled mixer stand 52. It goes without saying that these components during transport by means of securing means, not shown in FIG. B. straps can be secured against slipping.

Fig. 1 1 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 base plate 1 4, the vertical screw conveyor 20, the upper screw conveyor 22, a replacement screw 22e, which are in the operating state on the upper silo -Container attached ladder 30 and the railing device 32 added.

1 2 and 1 3 show a side and front view of another upper silo container C8, the front side and end wall of the container in turn being removed for better illustration. A concrete paver 64 is accommodated in the container C8 during transport and can be used at the construction site for concreting roads, runways and the like. It goes without saying that in the containers carried during transportation, in particular in the often empty upper binder silo containers C8, other objects required at the construction site can also be carried. 14, 1 5 and 1 6 explain a further embodiment of the transportable concrete mixing plant 1 0 according to the invention. In this embodiment, instead of the screw conveyors 1 8, 20 and 22 provided in the previous embodiments, a pressure delivery device 66 is provided, around which in a silo Containers C7, C8 to challenge substances, for example binders and / or additives, from this container C7, C8. For this purpose, a collecting vessel 68 is installed in the lower region of the lower silo container C7. In the upper wall of the collecting vessel 68, a motorized pressure-tight closure flap 68a is provided in such a way that it lies exactly below the lower end of the funnel 16 installed in the silo container C7.

The collecting vessel 68 is filled as follows: First, the silo containers C7, C8 are filled with binder or additive. In the embodiment shown in FIGS. 1 4 to 1 6, this takes place via binding agent supply connection elements 78, which are attached in the lower region of the silo container C7 and are open to the outside, to which a connecting hose to a device equipped with a pressure delivery device is connected in a manner known per se. trucks loaded with binders or additives can be connected. The substances conveyed by this truck with pressure to the binder feed connection elements 78 are pressed into binder feed pipelines 80 which run approximately vertically upwards in the corners of the silo containers C7, C8 in FIGS. 14 to 16 and in the upper region of the above silo container C8 are curved towards the inside of the silo container C8, so that the substances which are pressed with pressure via the binder supply connection elements 78 into the binder supply pipeline 80 at the upper end of these binder supply pipelines 80 into the interior of the Silo containers 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 of the silo containers C7, C8 shown. This filling technique Binder silos are known per se and will not be explained in more detail here.

The substances conveyed into the silo containers C7, C8 in this way fill the hopper 16 and the areas of the silo containers C7, C8 lying above them and lie with a certain pressure on the pressure-tight closure flap 68a of the collecting vessel 68. When the closure flap 68a is opened by motor, a quantity of the binder or additive determined by the opening period falls into the collecting vessel 68, which is closed again in a pressure-tight manner by the subsequent closure of the closure flap 68a. The air to be displaced from this when filling the binder or additive into the collecting vessel 68 can escape via air discharge lines 82 which, starting from the upper edge region of the collecting vessel 68, run essentially parallel to the binder supply pipes 80 upwards and into one with one The filter-provided chimney opens at the upper end of the upper silo container C8. 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 formed for the sake of simplicity as pressure-tight cut-off cut-outs from the inner area of the silo containers C7, C8, in which also the binder supply pipelines are formed 80 run. Of course, the air discharge lines 82 can also be designed as pipelines.

The binder or additive thus filled into the collecting vessel 68 is then pressed into a conveying hose 72 connected to the collecting vessel 68 with the aid of a compressor 70 connected to the collecting vessel 68. In the embodiment shown in FIGS. 14 to 16, this conveyor hose 72, similar to the vertical screw conveyor 20 in the previous embodiments, runs approximately vertically upwards on the outer wall of the silo containers C7, C8 and opens into an intermediate binder container C1 2 on one Mixer top container C3 is set up. The binder or additive conveyed through the conveying hose 72 into the intermediate binder container C 1 2 falls into a funnel 74 installed in the lower region of the intermediate binder container C1 2, which funnel has a corresponding hatch in the bottom of the intermediate binder container C1 2 above a cellular wheel sluice 76 opens, which is arranged above a binder pocket 24 in a mixer top container C3. The rotary valve 76 not only ensures the pressure decoupling between the binder or additive conveyed with pressure in the intermediate binder container C1 2 and the binder or additive to be weighed in the binder pocket 24, but also allows a pre-metering of that in the binder pocket by adjusting its running speed 24 binder or additive to be metered exactly.

As can be clearly seen in FIG. 14, in this embodiment the cellular wheel lock 76 and the binder pocket 24 are formed in one piece. Of course, it is also possible to arrange a cellular wheel lock 76 separately from a binder pocket 24 above it.

Of course, the conveyor hose 72 does not necessarily have to run approximately vertically upwards on the outer wall of the silo containers C7, C8 in the manner shown in FIG. 14. Rather, the use of such a conveying hose 72 offers the advantage of conveying binder or additive in a flexible manner from silo containers C7, C8 to a possibly further intermediate binder container C1 2 on a mixer top container C3.

1 7, 1 8 and 1 9 explain a further embodiment of the portable concrete mixing plant 1 0 according to the invention. In this embodiment, binder silo containers C13 are used, which are stacked parallel to one another with an essentially horizontal orientation. In Fig. 1 7 on the right five such silo containers C1 3 are in the Horizontal horizontal axis lying in the drawing plane. The floor and ceiling surfaces of this silo container C1 3 have been removed after transport in the construction of the transportable concrete mixing plant 1 0 according to the invention, so that in the area of the transition between two silo containers C 1 3 almost no niches, corners and the like. The like. Occur in which binders could undesirably accumulate. These five silo containers C1 3 are placed on a lowermost silo container C13A1 and closed at the top by an uppermost silo container C 1 3A2. As can be seen in FIG. 1 7, the bottom silo container C 1 3A1 and the top silo container C1 3A2 have half the height of the five other silo containers C1 3. These two containers C1 3A1, C 1 3A2 are namely the halves of a separable silo closure container C1 3A, which is carried as a closed container during transport of the concrete mixing plant 10 according to the invention and when the concrete mixing plant 10 is built into the two shown Halves is divided. This silo closure container C1 3A can accommodate components that are required in the operating state of the system 10 on the silo during transport, for example the filter 90 shown on top of the uppermost container C1 3A2 in FIG. 1, which filters out the air displaced when the silo is filled Filtered out binder.

Similar to the embodiments of the concrete mixing plant 10 according to the invention explained with reference to FIGS. 1 - 1 1, in the variant shown in FIGS. 1 7 - 1 9, binders become from the lower region of a binder silo, which here is represented by the five silos -Container C1 3 the bottom silo container C1 3A1 and the top silo container C1 3A2 is formed, conveyed out by a screw conveyor arrangement. However, in the embodiment of FIGS. 1 7 - 1 9 this conveyance 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 an intermediate binder container C 1 2 that is placed on a mixer top container C3. This binder Funding takes place with the aid of an inclined screw conveyor 88, which, as can be seen in FIG. 1 7, runs directly from the bottom silo container C1 3A1 to the intermediate container container C1 2. Due to this oblique course, the binder-inclined screw conveyor 88 can be designed shorter than the sum of the lengths of the three screw conveyors 18, 20, 22 shown in FIG. 1, for example, which each run horizontally or vertically, which leads to cost savings and easier assembly , since there is no need to align several screw conveyors with each other.

As can be seen in the plan view of FIG. 1 8 (system with one mixer) and FIG. 1 9 (system with two mixers), two “towers” of silo containers C1 3 arranged next to one another are provided in this embodiment, which are stacked parallel to each other with a horizontal orientation. Binder is conveyed out of the bottom silo container C1 3A1 of each tower by a binder inclined screw conveyor 88. In the variant of this embodiment shown in FIG. 1 8, in which a mixer is used, the two binder inclined screw conveyors 88 do not lead directly into the intermediate binder container C1 2, but rather to spills provided on its sides in its upper region and via which the binder conveyed up by the binder inclined screw conveyors 88 slips into the intermediate binder container C1 2. Similarly, in the variant shown in FIG. 1 9 with two mixers, the two binder inclined screw conveyors 88 each lead to a corresponding chute, which leads to two intermediate binder containers 01 2, each of which via a binder pocket 24 for supplying a mixer 1 2 are arranged.

The intermediate binder container 01 2 is also equipped with a binder feed line 92, shown in dashed lines in FIG. 17, which, similar to the silo containers 07, C8 explained in FIGS. 14 - 1 6, fills the intermediate binder container 01 2 made possible from a truck delivering a binder or the like, for example with the aid of a Pressure delivery device described above. Since the intermediate binder container C1 2 can therefore be filled in two different ways, namely on the one hand from the silo containers C1 3 via the binder inclined screw conveyor 88 and on the other hand from a delivery vehicle via the binder feed line 92, a continuous supply to the mixer 1 2 can be guaranteed with binding agents with high security.

In the embodiment shown in FIGS. 1 7 - 1 9, two further containers are arranged on a mixer container C2, namely a mixer attachment container C3 and in turn a container intermediate container 01 2. The resulting total weight includes a list of the Mixer containers C2 on a mixer stand 52, as shown, for example, in FIG. 1, as a rule. In order to nevertheless be able to drain concrete directly from the mixer container C2 into a truck 54 or the like provided under the mixer container C2, the mixer container C2 is the one in FIGS 9 embodiment shown at its ends each placed on other containers, so that a lower central region of the mixer container C2, in which there is at least one apparent hatch L2a for removing concrete, is freely accessible. In Fig. 1 7 the mixer container C2 is placed at its left end on a control station container C1 0, which in turn is on a water container C1 1. The right end of the mixer container C2 in FIG. 17 is placed on an additive container C9, which in turn also stands on a water container C1 1. With this arrangement, a truck 54 provided can drive under the open hatches L2a of the mixer container 02 and pick up the discharged concrete. The water containers C1 1 shown for setting up the mixer container C2 in FIG. 1 7 each have half the height of the additive container C9 or the control station container C1 0. It goes without saying that water containers C1 1 or other containers of the transportable concrete mixing plant 1 0 according to the invention can be used which are the same height as the containers C9, C1 have 0, so that in this case the mixer container C2 would be higher. It is important with regard to the selection of the containers that are used to support the mixer container C2 at its left and right ends, that the mixer container C2 is sufficiently high to ensure that the truck 54 can be retracted easily, but not so it stands high that drained concrete could fall next to the truck 54 or fall too fast on the loading area.

It goes without saying that this type of installation of the mixer container C2 can in principle be chosen as an alternative to the use of a mixer stand 52 or a loading container C1, regardless of the embodiment of FIGS. 1 7-1 9.

The embodiment of the portable concrete mixing plant 10 according to the invention shown in FIGS. 20-22 is similar to that shown in FIGS. 1 7-1 9. Therefore, only the differences from the embodiment described above will be explained below.

Also in the embodiment of the transportable concrete mixing plant 10 according to the invention shown in FIGS. 20-22, an intermediate binder container C1 2 is placed on a mixer top container C3 above the binder pocket 24 provided in it. In this embodiment, however, the binder inclined screw conveyor 88 does not convey binder from the silo containers C1 3 into the intermediate binder container C1 2, but rather into an intermediate binder container 84, which is provided in the mixer top container C3 at the top right in FIG. 20 . Binder is conveyed from this intermediate binder container 84 into the binder pocket 24 by means of a screw conveyor 86. It is understood that depending on the size and relative arrangement of the binder pocket 24 and the binder intermediate container 84 instead a screw conveyor 86, a simple chute or slide or a small pressure conveyor can also be provided.

The course of the binder inclined screw conveyor 88 selected in this embodiment from the bottom silo container C 1 3A1 to the binder intermediate container 84 in the mixer attachment container C3 allows the use of a shorter one in comparison to the embodiment explained with reference to FIGS Binder inclined screw conveyor 88, which can contribute to cost savings and can facilitate transport and assembly.

In this embodiment, the intermediate binder container C1 2 is likewise equipped with a binder feed line 92 and, as already explained above, can therefore be filled from a truck or the like which delivers a binder.

As the top views in FIG. 21 (one mixer) and in FIG. 22 (two mixers) show, in contrast to the embodiment explained with reference to FIGS. 1 7-1 9, the two “towers” are made of silo in the embodiment under consideration here -Containers C1 3, which are stacked parallel to one another with a substantially horizontal longitudinal axis, set up at a distance from one another and connected to one another by cross struts 94. In this way, greater stability of the silo container C1 3 against falling over can be achieved, which is particularly important when the portable concrete mixing plant 10 according to the invention is used on construction sites that are exposed to strong winds.

The invention is not limited to the exemplary embodiments mentioned. It can thus be seen from the three embodiments described above that the portable concrete mixing plant 10 according to the invention can in principle have any number of mixers 122. It is also possible to mix several mixers with a single binder. to supply silo with binder, wherein a conveyor belt for binders similar to the one presented in the third embodiment, which can be shifted between different operating positions and can be used with an optionally switchable running direction. Furthermore, the number of dosing unit containers C5 used, with associated dosing top containers C6, depending on the number of mixers 1 2 used and the speed of their concrete production, can optionally also be varied compared to the embodiments presented. It is also possible to use more than one steep conveyor belt 44 to feed aggregates to the preliminary silos 48. Furthermore, the relative arrangement of the containers can, of course, be changed with respect to the embodiments presented, with full preservation of the function of the portable concrete mixing plant 10 according to the invention, without leaving the scope of the invention.

Claims

Expectations

1. Transportable concrete mixing plant (10), comprising a plurality of detachably connectable mixing plant components, which are transported in a plurality of containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13) are included, at least some of these containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, Cl 1, C12, C13), preferably all of these containers in the operating state of the mixing plant (10) serve as a supporting structure for mixing plant components and / or containers for concrete raw materials.

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 assembled into standard shipping containers that can be transported uniformly according to international requirements, in particular by ship, train and truck.

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, Cl, C8, C9, C10, Cl 1, C12, C13) reveal hatches (L1, L1a, L2, L2a, L3, L3a, L3b, L4, L4a, L5, L 5a, L6, L7), through which, in the operating state of the mixing plant (10), in different containers (C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, C12, C13) at least partially incorporated mixing plant components can interact.

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 has at least one concrete mixer (1 2) for mixing aggregates, preferably cement-containing binders, water and additives and additives for the production of concrete contains.

5. Transportable concrete mixing plant (1 0) according to claim 4, characterized in that in the operating state above each mixer (1 2) wall of the mixer container (C2) above each mixer (1 2) has an open hatch (L2).

6. Transportable concrete mixing plant (1 0) according to claim 5, characterized in that it comprises at least one in the operating state of the mixing plant (10) on the mixer container (C2) arranged mixer top container (C3), the loading means for introducing binder, preferably cement, and aggregates as well as any additives in each mixer (12) through the open hatches (L2) located in the upper wall of the mixer container (C2) and through the hatches (L2) opposite these hatches (L3) contains in the bottom wall of the mixer top container (C3).

7. Transportable concrete mixing plant (1 0) according to claim 6, characterized in that the feed means for each mixer (1 2) comprise a pre-silo (48) for aggregates and a binder pocket (24) for binders and optionally for additives.

8. Transportable concrete mixing plant (10) according to claim 7, characterized in that the binder bag (24) and optionally the additive bag contains a scale.

9. Transportable concrete mixing plant (1 0) according to one of claims 6 to 8, characterized in that through an open hatch (L3a) in a wall of the mixer top container (C3) in this binding agent conveying means (22) leading therein for the introduction of binding agent and optionally additive into the mixer attachment container (C3) is provided.

0. Transportable concrete mixing plant (1 0) according to claim 9, characterized in that the binder conveyor means (22) leading into the mixer attachment container (C3) is a screw conveyor.

1 . Transportable concrete mixing plant (1 0) according to one of Claims 6 to 1 0, characterized in that when at least two mixers (1 2) are used, an aggregate conveying means (56) with an optionally switchable running direction for feeding the aggregates to the respective one mixer ( 1 2) associated charging means (48) is provided.

2. Transportable concrete mixing plant (1 0) according to claim 1 1, characterized in that when using at least three mixers (1 2) the aggregate funding (56) over the loading means (48) for the aggregates back and forth between several operating positions in which each end of the supplemental funding means (56) is associated with a loading means (48) for additional charges.

3. Transportable concrete mixing plant (10) according to claim 1 1 or 1 2, characterized in that the additional funding (56) is a conveyor belt.

4. Transportable concrete mixing plant (1 0) according to one of claims 6 to 1 3, characterized in that at least one wall of the mixer top container (C3) through an open hatch (L3b) continuous steep conveyor (44) for introducing the supplements in the Mixer top container (C3) is provided.

5. Transportable concrete mixing plant (1 0) according to claim 1 4, characterized in that the steep conveyor (44) is a conveyor belt, which is received in a folded state in a steep conveyor belt container (C4) during transport.

6. Transportable concrete mixing plant (1 0) according to one of the claims

4 to 1 5, characterized in that the lower in the operating state

Wall of the mixer container (C2) underneath each mixer (1 2)

Removing concrete from the mixer container (C2) reveals hatch (L2a).

7. Transportable concrete mixing plant (1 0) according to claim 1 6, characterized in that the mixer container (C2) is placed on a base of a mixer frame (52), which is dimensioned such that concrete through the hatches (L2a) for

Removal of concrete from the mixer container (C2) into a truck (54) or the like provided under the stand area.

8. Transportable concrete mixing plant (1 0) according to claim 1 6, characterized in that the mixer container (C2) is in the operating state of the system on a loading container (C1), in the top wall of the apparent hatches (L2a) of the bottom wall of the Mixer containers (C2) opposite, open hatches (L1) are provided.

9. Transportable concrete mixing plant (1 0) according to claim 1 8, characterized in that an open hatch (L1 a) is provided on an end wall of the loading container (C1), the hatch of one completely during transport in the loading container (C1) recorded

Concrete conveyor device for conveying the concrete, for example a truck or the like provided next to the loading container is enforced.

20. Transportable concrete mixing plant (1 0) according to claim 1 9, characterized in that the concrete conveying device in the operating state completely in the loading container (C1) accommodated upper concrete collection belt (60) and one of the apparent hatch (L1 a) in the end wall of the loading Containers (C1) in the operating state penetrating lower concrete conveyor belt (62).

21. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it comprises at least one binding agent silo container (C7, C8) as a storage means for binding agents or the like and optionally a corresponding silo container for concrete additive.

22. Transportable concrete mixing plant (10) according to claim 21, characterized in that each binder silo or additive silo container (C7, C8) stands upright on its end face.

23. Transportable concrete mixing plant (10) according to claim 21 or 22, characterized in that at least two binder silo or additive silo container (C7, C8) are placed next to or on top of each other.

24. Transportable concrete mixing plant (10) according to claim 22 or 23, characterized in that each upright binder ^¬ silo or additive silo container (C7, C8) for stabilization by means of cross struts (28) on the mixer top container (C3) and / or on Mixer container (C2) and / or on loading container (C1) or on

Mixer frame (52) is attached.

25. Transportable concrete mixing plant (10) according to any one of claims 21 to 24, characterized in that each silo container (C7) and the loading container (C1) or the one not standing on a further silo container (C7, C8) Mixer frame (52) are attached to a common base plate (1 4).

26. Transportable concrete mixing plant (10) according to any one of claims 21 to 25, characterized in that each silo container (C7) standing on another silo container (C7, C8) does not have a funnel (1 6 ), whose upper cross-section essentially corresponds to the cross-section of the silo container (C7) and which tapers towards the bottom.

27. Transportable concrete mixing plant (1 0) according to one of claims 21 to 26, characterized in that each silo container (C7) not standing on a further silo container (C7, C8) has a concrete slab on its end face located below in the operating state ( 26) for stabilization.

28. Transportable concrete mixing plant (1 0) according to claim 26 or 27, characterized in that in the operating state, a binder or additive conveying means (1 8) is arranged under the funnel opening, which a side wall of the silo container (C7) by a open hatch (L7) penetrates.

29. Transportable concrete mixing plant (10) according to claim 28, characterized in that the binder or additive conveying means (1 8) is a screw conveyor.

30. Transportable concrete mixing plant (10) according to claim 28 or 29, characterized in that the binder or additive Conveying means (1 8) cooperates with a vertical conveying means (20) running essentially vertically or obliquely upwards on an outer wall of the silo container (C7) in such a way that it can transfer this binder or additive for further conveying.

31 Transportable concrete mixing plant (1 0) according to claim 30, characterized in that the vertical or inclined conveying means (20) is a screw conveyor.

32. Transportable concrete mixing plant (1 0) according to claim 30 or 31, characterized in that the vertical or inclined conveying means (20) interacts in this way with the binding agent or additive conveying means (22) running partially in the mixer attachment container (C3), that it passes this binder or additive for further conveyance.

33. Transportable concrete mixing plant (10) according to one of claims 21 to 32, characterized in that further ladders (30), safety railings (32) and the like are provided on the outside of the silo container (C7, C8), which during transport in a preferably this container (C7, C8) are added.

34. Transportable concrete mixing plant (1 0) according to one of claims 21 to 33, characterized in that a concrete paver (64) and / or a work platform or the like is accommodated in a container, preferably a silo container (C7, C8) during transport .

35. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it has at least one

Dosing unit container (C5) which contains a dosing device (34) for dosing the supplements.

36. Transportable concrete mixing plant (1 0) according to claim 35, characterized in that the metering device (34) for aggregates at least one weighing conveyor belt (34a) for weighing and transporting the aggregates and at least one feeder (34a) assigned to the weighing conveyor belt (34a) 34b).

37. Transportable Betσnmischanlage (1 0) according to claim 36, characterized in that each loading means (34b) is formed by a funnel arranged above the weighing conveyor belt (34a), which tapers downwards and upwards to reveal one

Hatch (L5) in the upper side wall of the dosing unit container (C5) opens wide when in operation.

38. Transportable concrete mixing plant (10) according to claim 37, characterized in that each metering unit container (C5) is assigned a metering container (C6) of substantially the same length, the halves of which, in the operating state, are located next to one another parallel to the metering unit container (C5) are oriented on this and with the help of a baffle plate and open hatches (L5, L6) in the upper side wall of the dosing unit container (C5) and in the lower side wall of each half of the dosing unit container (C6) the effective upper filling cross section of each funnel Increase (34b) in the dosing unit container (C5).

39. Transportable concrete mixing plant (10) according to claim 38, characterized in that the baffle device fixed in the metering container (C6) arranged, inclined baffle plates (36) which, in the operating state, the walls of each funnel (34b) in the metering unit container ( Extend C5) up into the halves of the dosing top container (C6).

40. Transportable concrete mixing plant (1 0) according to claim 38 or 39, characterized in that the baffle device further comprises baffle plates (38) which are rotatably mounted substantially at corners of the halves of the metering container (C6) and in the operating state such from the Metering container (C6) are folded that they enlarge the funnel opening upwards.

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 a longitudinal hatch in the metering unit conveyor (34a) which runs parallel to the latter and which is openable in one direction The end face of the dosing unit container (C5), which can be partially moved out of the dosing unit container (C5), is provided for the task conveying means (42).

42. Transportable concrete mixing plant (1 0) according to claim 41, characterized in that the task conveyor (42) is a conveyor belt.

43. Transportable concrete mixing plant (1 0) according to claim 41 or 42, characterized in that the end of the feed conveying means (42) located above the steep conveying means (44) for the supply of aggregates for in the operating state outside the metering unit container (C5) Mixer top container (C3) is arranged.

44. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it additionally comprises an admixture container (C9) for receiving concrete admixtures.

45. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it additionally has a Control station container (C 1 0), in which a control station for controlling the components of the concrete mixing plant (1 0) is housed.

46. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it additionally comprises a water container (C 1 1) or a container which holds water and / or concrete admixtures.

47. Transportable concrete mixing plant (10) according to one of the preceding claims, by covering, insulation, partitioning, heating or heating (with warm air, superheated steam, heating spiral, etc.) of the individual mixing plant components (in particular mixer container (C2) including mixer attachment -Containers (C3), conveyor belts (34a, 44, 56, 62), dosing unit containers (C5), additives (C9) and water containers (C1 1) including delivery lines) allow mixed operation even at ambient temperatures below 0 ° C .

48. Transportable concrete mixing plant (1 0) according to one of claims 1 to 47, characterized in that it has a pressure delivery device (66), preferably compressed air delivery device, for pressure delivery from at least one silo container (C7).

49. Transportable concrete mixing plant (10) according to claim 48, characterized in that the pressure delivery 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

Binder intermediate container (C1 2) for the intermediate storage of Has binder, which is preferably placed on at least one mixer top container (C3).

51. Transportable concrete mixing plant (1 0) according to claim 49 and claim 50, characterized in that the conveying hose (72) opens into the at least one intermediate binder container (C1 2).

52. Transportable Betoπmischanlage (10) according to claim 50 or 51, characterized in that the at least one intermediate binder container (C1 2) contains a funnel (74) which opens into a rotary valve (76) which over a binder pocket (24) is arranged in a mixer top container (C3).

53. Transportable concrete mixing plant (10) according to claim 49 or one of claims 50 to 52, if referred 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) are.

54. Transportable concrete mixing plant (10) according to one of the preceding claims, characterized in that it has binder silo or / and additive silo container (C1 3) which are stacked parallel to one another in the operating state with a substantially horizontal orientation.

55. Transportable concrete mixing plant (10) according to claim 54, characterized in that the binder silo and / or additive silo container (C1 3), which are stacked parallel to one another with essentially horizontal orientation, each have removable floor and

Have ceiling surfaces.

56. Transportable concrete mixing plant (10) according to claim 54 or 55, characterized in that it has a silo closure container (C 1 3A) which can be divided essentially into two halves, the halves (C1 3A1, C1 3A2) of the lowest (C1 3A1) or the uppermost (C 1 3A2) container of a group of silo containers (C1 3) stacked parallel to one another.

57. Transportable concrete mixing plant (1 0) according to any one of claims 6 to 56, characterized in that at least one intermediate binder container (84) for intermediate storage of binder is preferably arranged in a mixer attachment container (C3).

58. Transportable concrete mixing plant (1 0) according to claim 57, characterized in that a binder conveying member (86), preferably a binder conveying screw, for conveying binder from the at least one intermediate binder container (84) into a binder pocket (24) in Mixer top container (C3) is arranged.

59. Transportable concrete mixing plant (10) according to claim 57 or 58, characterized in that it for conveying binders and / or additives from a silo container (C7, C8, C1 3) and / or a transport vehicle in a binder intermediate container ( 84) and / or an intermediate binder container (C1 2) is formed, preferably has a screw conveyor arrangement (18, 20, 22; 88) and / or a pressure conveyor device (66).

60. Transportable concrete mixing plant (10) according to one of claims 4 to 59, characterized in that a mixer container (C2) in the operating state of the plant at its ends on at least one other container (C1, C2, C3, C4, C5, C6, C7, C8, C9, C1 0,

C1 1, C1 2, C1 3) is set up in such a way that concrete can be taken through the open hatches (L2a) to remove concrete from the mixer Container (C2) can be lowered into a truck (54) or the like provided under the mixer container (C2).

61. Use of a container, preferably a standard shipping container, in particular in a transportable concrete mixing plant (10) according to one of claims 1 to 60, as a binder or additive silo.

62. A method for securing a binder or additive silo, preferably a container used as a silo according to claim

61, a concrete mixing plant (1 0) against falling over, characterized in that the silo is attached to components of the concrete mixing plant (1 0) by means of cross struts.

63. Funding means, preferably conveyor belt, with optionally switchable conveying direction, which can additionally be moved back and forth in the longitudinal direction between different operating positions.

64. Dosing attachment to enlarge the effective collecting cross section of a funnel of a dosing unit, preferably a dosing unit.

Containers of a transportable concrete mixing plant (1 0) according to one of Claims 35 to 43, characterized in that the metering attachment is formed by a metering attachment container which can be divided into two halves, the halves of which are placed next to one another on the metering unit by means of fixed baffle plates inside the halves and to the outside fold-out baffle plates continue the inclined walls of the funnel upwards.