EP2366518A2 - Mobile concrete mixer and method for transport and assembly thereof - Google Patents

Abstract

The machine has component i.e. mixing unit (1), raised over a lifting device (2) in a working position and supported with respect to the ground. A concrete mixer is loaded in the working position of the component. The component is transported to a loading area (5) of a transport vehicle (6) i.e. semi-trailer. The lifting device is raised in such a manner that the transport vehicle is driven out under the component, where the lifting device is releaseably connected with the component. The component exhibits a shape and/or dimension of a 20-inch container or 40-inch container.

Description

The present invention relates to a mobile concrete mixing plant with at least one structural unit, in particular a mixing unit, and a lifting device, wherein the structural unit can be raised via the lifting device in a working position and supported relative to the ground. In this working position of the unit truck mixers can be loaded from the unit with concrete. Advantageously, the truck mixer can be driven under the unit and filled from above.

It is already known to integrate the mixing unit and the lifting device in the trailer of a truck. The mobile concrete mixing plant can thus be moved to the respective place of use. There, the mixing unit is then raised via the lifting device in its working position so that truck mixers can be driven under the mixing unit and loaded. However, known mobile concrete mixing plants are too complicated and not flexible enough to use. Object of the present invention is therefore to provide a mobile concrete mixing plant available, which is simple and can be used flexibly.

This object is achieved by mobile concrete mixing plants according to claim 1.

The present invention comprises a mobile concrete mixing plant with at least one structural unit, in particular a mixing unit and a lifting device, wherein the structural unit can be raised via the lifting device into a working position and supported relative to the ground. In this case truck mixer in the working position of the unit from loading. According to the invention it is provided that the assembly is transportable on the bed of a transport vehicle. Thus, the usually already available transport vehicles can be used to transport the mobile concrete mixing plant. Compared with known concrete mixing plants, this has the advantage that the mobile concrete mixing plant itself no longer has to have a landing gear and thus has a considerably simpler structure. In addition, several units can be combined more easily, so that the mobile concrete mixing plant can be used flexibly.

Advantageously, it is provided that the assembly is lifted by the lifting device so that the transport vehicle can be moved out of the unit. According to the invention, the lifting device is thus not only used to lift the assembly into its working position and to support it against the ground, but additionally to lift the assembly for unloading from the loading surface of a transport vehicle. This results in a much more flexible use and a simpler structure of the mobile concrete mixing plant.

The present invention further comprises a mobile concrete mixing plant with at least one structural unit, in particular a mixing unit, and a lifting device, wherein the structural unit is raised to a working position via the lifting device and can be supported against the ground. In the working position, truck mixers can be loaded from the unit. According to the invention it is provided that the lifting device is detachably connected to the unit. The lifting device can thus be transported separately and must be connected only at the place of installation with the unit in order to raise this. This results in a considerably simpler structure. In addition, the lifting device can be additionally used for other tasks.

Advantageously, the releasably connected to the unit lifting device is used in the above-described mobile concrete mixing plant, in which the unit is transportable on the bed of a transport vehicle. However, the releasable connectivity of the lifting device is also independent of such an embodiment subject of the present application.

Advantageously, in the mobile concrete mixing plant according to the invention, truck mixers can move under the assembly unit when it has been raised to the working position and thus be loaded from above. Advantageously, the assembly has in its working position a clear height of more than 2m, advantageously more than 3m and further advantageously more than 4m. Advantageously, the structural unit is a mixing unit in which liquid concrete can be mixed in a mixing plant and directed to the truck mixer. In this case, the assembly is advantageously a preassembled functional unit which is set up at the place of use and possibly supplemented by further elements.

Further advantageously, it is provided that further elements of the concrete mixing plant are combined in one or more other units, wherein the unit or units can be transported on the back of a transport vehicle or are. In particular, the units are or can be transported on the loading area of a semi-trailer. Thus, the entire mobile concrete mixing plant can easily be moved to transport vehicles to the respective site and placed there.

In the or the other units may be one or more transport units, in which several elements of the concrete mixing plant are housed for transport, so as to allow a particularly simple transport. At the installation site, these elements can then be removed from the transport unit. In the case of the other building units but it may also be more functional units, which are placed at the site and possibly supplemented by other elements. Likewise, the further structural units can be transport units as well as functional units.

Further advantageously, it is provided that the lifting device with at least one other unit is releasably connectable, so that the assembly on the lifting device is raised so that the transport vehicle can be moved out of the unit. The lifting device can thus be used not only for lifting and / or supporting the first unit in its working position, but also for unloading the other unit. Advantageously, the lifting device can be used both for unloading the first unit and the other units.

Further advantageously, it is provided that the assembly or units on the lifting device can be lowered to the ground or are. Advantageously, the lifting device can be released there from the assembly.

Advantageously, the invention provides that the structural unit and / or the structural units have or have the shape and / or dimensions of a container. In particular, it is provided that the unit and / or units each have cuboid transport dimensions. As a result, they can be easily transported on the back of a transport vehicle. In particular, the assembly and / or assemblies have the shape and / or dimensions of a 20-inch container or a 40-inch Conatinern. As a result, standard transport vehicles can be used to transport the units. Advantageously, the lifting device according to the invention has a plurality of lifting supports, which are each individually connectable to the structural unit and / or the structural units. As a result, the lifting columns can be transported separately and then connected at the place of use with the unit or the units to raise them. Advantageously, four lifting supports are provided, via which the structural unit can be raised.

Further advantageously, the mobile concrete mixing plant has a material lift, which can be arranged for transport in the first unit and can be drained from the place of installation so that it raises material to the unit in the working position. Such a material lift can be used in particular to raise sand or gravel to the unit. In particular, the material elevator has an elevator rail on which a material container is guided. Advantageously, this rail is designed in several parts and can be assembled at the installation.

Further advantageously, it is provided that the lifting device according to the invention comprises at least one support strut and a guide strut which can be raised along the support strut via a lifting drive. Advantageously, in this case, the guide strut can be connected to the structural unit (s) so that the assembly can be raised by lifting the guide strut along the support strut. Advantageously, the support strut is a support tube and the guide strut is a guide tube, wherein the guide tube surrounds the support tube. This results in a particularly stable and simple construction.

Further advantageously, the guide strut can be locked in different positions on the support strut. In particular, it is provided that the guide strut can be locked in the working position on the support strut. Furthermore, the guide strut may optionally be lockable in different positions on the support strut to intermittently lift the guide strut to enable. Advantageously, it is provided that the guide strut has a plurality of locking points at different heights.

Advantageously, it is further provided that the guide strut can be raised by the lifting drive in each case from a locking point to a higher-lying locking point and so can climb up the support strut upwards. The lifting takes place according to the invention in that the lifting drive lifts the guide strut to a higher locking point. There, the guide strut is then locked to the support strut, so that the lifting drive can be moved back again. Then the guide strut can be raised again to a higher locking point and locked there.

Further advantageously, the lifting drive comprises a hydraulic cylinder.

Further advantageously, it is provided that the lifting device and in particular the lifting drive can be operated by hand. This makes the mobile concrete mixing plant particularly easy to set up. Advantageously, a hand pump is provided, via which a lifting cylinder can be acted upon. In particular, the lifting cylinder is the lifting drive of a lifting support.

Alternatively, one or more electric pumps may be provided for driving the lifting device and in particular the lifting drive. As a result, the operation of the lifting device is facilitated. Advantageously, the one or more electric pumps can be driven via the power supply of a truck, in particular over 24 V. In this way, the lifting device can be used independently of a power connection. If several pumps are provided, a controller can be used which synchronizes the stroke movement of the individual linear actuators.

In addition to the mobile concrete mixing plant, the present invention further comprises a corresponding lifting device, as described above. Especially the lifting device according to the invention in this case comprises a support strut and a guide strut, which is liftable on the support strut via a lifting drive, wherein the guide strut is releasably connectable to a container-shaped unit and wherein the unit via the lifting device to a working height of more than 2m, advantageously more than 3 m and further advantageously of more than 4 m can be raised. Such a lifting device according to the invention has the same advantages that have been described above with respect to the use of the lifting device. However, if necessary, the lifting device can also be used for other purposes.

Further advantageously, it is provided that the lifting device has a plurality of lifting supports, which are each individually connected to a unit and each having a support strut and a guide strut, which are liftable on the support strut via a lifting drive. As a result, the lifting device can be transported very easily.

Further advantageously, the lifting device further comprises at least one, further advantageously two transverse struts. Advantageously, in each case paired lifting supports are provided, which are connectable via the transverse connection.

The present invention further comprises a method for transporting and assembling a mobile concrete mixing plant comprising the steps of: delivering one or more structural units to one or more transport vehicles, lifting the at least one structural unit from the cargo bed and raising the structural unit to a working height. As a result, a particularly simple construction unit can be used.

Advantageously, the method comprises the steps of: delivering one or more units on one or more transport vehicles, supporting at least one unit with a lifting device, so that the transport vehicle can be moved out below the unit, and lifting the unit to a working height. As a result of the method according to the invention, a mobile concrete mixing plant can thus be delivered without problems to one or more transport vehicles and can be constructed extremely simply at the place of use.

The present invention further comprises a method for transporting and assembling a mobile concrete mixing plant, comprising the steps of: delivering one or more units to one or more transport vehicles, attaching a lifting device to the at least one unit, and raising the unit to a working height. As a result, the lifting device can be transported separately and connected only at the place of use with the unit to raise them to their working height.

Advantageously, the method according to the invention is a method for transporting and constructing a mobile concrete mixing plant, as described in greater detail above. Advantageously, the transport and construction is carried out as described above with respect to the mobile concrete mixing plant.

Further advantageously, the concrete mixing plant consists of several units, the lifting device is first connected to a first unit to unload it, and then released from the first unit and connected to a second unit to raise it to a working position and the floor support. The lifting device according to the invention can thus be used both for unloading a plurality of structural units, as well as for supporting one of the structural units, in particular the mixing unit, in the working position.

Further advantageously, the mobile concrete mixing plant according to the invention has a cement silo, from which cement can be transported via a screw conveyor to the mixing unit. Advantageously, it is provided that the screw conveyor is first placed on the mixing unit in the construction of the mobile concrete mixing plant, while this in a first, lower Position is, and the mixing unit is then raised via the lifting device in its working position. As a result, the screw conveyor can be mounted without the use of a crane. In particular, the screw conveyor can be z. B. be positioned over an excavator or wheel loader on the mixing unit in its first position.

Advantageously, the mobile concrete mixing plant on a container-shaped transport unit, in which individual elements can be transported. Advantageously, the lifting device is transported in this transport unit. Further advantageously, the screw conveyor for conveying cement is transported in this transport unit. Possibly. The cement silo can also be transported in the transport unit.

As further units for the mobile mixing plant different silos can continue to be used to supply the mixing plant with materials.

For example, it is possible to provide a row silo system with at least two silos arranged next to one another. Advantageously, this row silo system has a conveyor belt for transporting the material to the mixing unit. In particular, the material can be transported to a material elevator of the mixing unit. Further advantageously, the conveyor belt has an integrated balance.

Alternatively or additionally, a pocket silo system may be provided. This has a plurality of juxtaposed bag silos, which advantageously have down to a centrally arranged feed area down areas. From this common feed area, the material then advantageously reaches the material elevator of the mixing unit. Advantageously, an additional scale is integrated in the material hoist.

Advantageously, the row silo system and / or the bag silo system thereby form preassembled units which have the dimensions and / or shape of a container. As a result, these are particularly easy to transport.

Further advantageously, the mobile concrete mixing plant according to the invention may comprise a cement silo container, which has at its bottom a horizontal screw conveyor, which transports the cement stored in the container to the screw conveyor.

Advantageously, the lifting device according to the invention can be used for unloading all structural units or transport containers.

Advantageously, the lifting device can be connected to all container-shaped units in order to lift them from the back of a transport vehicle and set down on the ground.

Figur 1:

ein erstes Ausführungsbeispiel einer Mischeinheit einer erfindungsgemäßen Betonmischanlage in einer Seitenansicht beim Abladen von einem Transportfahrzeug,

Figur 2a, b:

das erste Ausführungsbeispiel einer Mischeinheit einer erfindungsgemäßen Betonmischanlage in einer ersten, niedrigeren Position und in der höheren Arbeitsposition jeweils in einer Frontalansicht,

Figur 3:

das erste Ausführungsbeispiel in einer Draufsicht,

Figur 4:

das erste Ausführungsbeispiel in einer Seitenansicht in der Arbeitsposition,

Figuren 5a - h:

ein Ausführungsbeispiel eines erfindungsgemäßen Verfahrens zum Transport und zum Aufbau eines ersten Ausführungsbeispiels einer mobilen Betonmischanlage gemäß der vorliegenden Erfindung,

Figur 6:

ein zweites Ausführungsbeispiel einer erfindungsgemäßen mobilen Betonmischanlage in einer Draufsicht,

Figur 7:

ein drittes Ausführungsbeispiel einer erfindungsgemäßen mobilen Betonmischanlage in einer Transportansicht,

Figuren 8a - c:

das dritte Ausführungsbeispiel jeweils von unterschiedlichen Seiten in einem aufgebauten Zustand,

Figur 9:

ein viertes Ausführungsbeispiel einer erfindungsgemäßen Betonmischanlage in einem Transportzustand,

Figuren 10a - c:

das vierte Ausführungsbeispiel in zwei Seitenansichten und einer Draufsicht in einem aufgebauten Zustand.

The present invention will now be described in more detail with reference to embodiments and drawings. Showing:

FIG. 1:

A first embodiment of a mixing unit of a concrete mixing plant according to the invention in a side view during unloading of a transport vehicle,

FIG. 2a, b:

the first embodiment of a mixing unit of a concrete mixing plant according to the invention in a first, lower position and in the higher working position in each case in a front view,

FIG. 3:

the first embodiment in a plan view,

FIG. 4:

the first embodiment in a side view in the working position,

FIGS. 5a-h:

An embodiment of a method according to the invention for transport and construction of a first embodiment of a mobile concrete mixing plant according to the present invention,

FIG. 6:

A second embodiment of a mobile concrete mixing plant according to the invention in a plan view,

FIG. 7:

A third embodiment of a mobile concrete mixing plant according to the invention in a transport view,

FIGS. 8a-c:

the third embodiment respectively from different sides in a built-up state,

FIG. 9:

A fourth embodiment of a concrete mixing plant according to the invention in a transport state,

FIGS. 10a-c:

the fourth embodiment in two side views and a plan view in a built state.

Based on FIGS. 1 to 4 Now, a first embodiment of a mixing unit of a mobile concrete mixing plant according to the invention is shown in more detail. The mixing unit 1 has the shape of a container. For this purpose, the mixing unit has a cuboidal frame 9 of corresponding metal struts, which form a support structure for the mixing unit 1. The mixing unit 1 can be easily transported on the loading area 5 of a transport vehicle 6. In the embodiment, it is provided that the mixing unit has the size of a conventional 20-inch container. The mixing unit is a preassembled functional unit.

To operate the mobile concrete mixing plant, the mixing unit must be raised to a working position in which a truck mixer can drive under the mixing unit and can be filled with concrete from above. In particular, this requires a working height of 4.25m.

According to the invention, a lifting device 2 is provided for this purpose, which lifts the mixing unit into the working position and supports it against the ground. In the present invention, two particular advantages over the prior art are achieved by the corresponding design of the lifting device: on the one hand, the lifting device can also be used for unloading the mixing unit 1 of the loading area 5 of the transport vehicle 6. In particular, the lifting device 2 can be used not only for lifting the mixing unit into its working position, but also for lifting the mixing unit from the loading surface 5, so that the transport vehicle 6 can be moved out below the mixing unit. On the other hand, the lifting device 2 according to the invention can be detachably connected to the mixing unit 1. This has the advantage that the lifting device 2 can be transported separately and thus does not increase the transport dimensions of the mixing unit. In addition, the entire structure can be made simpler. Furthermore, the lifting device 2 can also be used for unloading other units.

The lifting device 2 according to the invention in this case has four lifting supports, which are each individually connectable to the mixing unit 1. Each of the lifting supports in this case comprises a support strut 3 and a guide strut 4. The guide strut 4 can be raised via a lifting drive 11 along the support strut. In the exemplary embodiment, the support strut is designed as a support tube and the guide strut as a guide tube, which surrounds the support tube 3. As a lifting drive 11 is a hydraulic cylinder, via which the guide strut 4 can be raised relative to the support strut 3.

The structure of the lifting supports is in particular from FIGS. 2a and 2b closer. Each of the support struts 3 has a height which is greater as the working height of the mixing plant. In particular, the support struts therefore have a height of more than 5.5 m.

On the support struts 3 locking points 12 are provided at regular intervals, here in the form of holes. Through these bores bolts 41 and 42 can be passed, by means of which the guide tube 4 and the lifting drive 11 can be locked to the support tube 3. For this purpose, the lifting drive 11 has a hook-shaped element 14, which acts on the support tube 3 via the bolt 41. The guide tube has a vertical slot 40 through which the bolt 42 passes. The guide tube may be supported by the upper edge of the slot 40 on the bolt 42, but is lifted from this position by a certain distance, wherein the guide tube moves with the slot 40 along the bolt 42. Advantageously, the slot 40 has a length which corresponds to the distance between two locking points 12 of the support tube 3. About this embodiment of the lifting columns, the guide strut 4 on the support strut 3 along climb up.

The lifting takes place as follows: first, the lifting drive 11 is connected via the bolt 41 with a locking point of the support strut. The lifting drive now raises the guide support 4 by a certain way up. The lifting drive is a hydraulic cylinder which is extended to raise the guide bar, the slot 40 being guided on the pin 42. The lifting movement is thereby limited by the length of the slot 40 so that when striking the bolt 42 at the lower end of the slot at the upper end of the slot re-bolting with the overlying locking point is possible. The guide strut 4 is now bolted in this higher position on the bolt 42 with the support strut 3 and thus locked at this. The lifting drive 11 can now be released from the locking point and a locking point higher again connected to the support strut 3. Thereupon, by extending the lifting drive, the guide strut in turn raised against the support strut. The corresponding procedure is repeated until the desired height of the mixing unit is reached.

According to the invention, the lifting drive can be operated manually, for which purpose a hand pump 13 is provided which applies hydraulic fluid to the lifting cylinder of the lifting drive 11. As a result, the mixing unit can be raised autonomously. It does not have to be provided on each strut a hand pump. Rather, two or more linear actuators can be driven by a single hand pump. In the exemplary embodiment, it is provided that in each case two lifting struts are raised by means of a hand pump. For lifting two operators are thus necessary, which operate the respective Hubantriebe synchronously.

In an alternative embodiment, the hand pump or hand pumps can be replaced by one or more electric pumps. As a result, the operation of the lifting device is facilitated. Advantageously, the one or more electric pumps can be driven via the power supply of a truck, in particular above 24 V. If a plurality of pumps are provided, a controller can be used which synchronizes the lifting movement of the individual lifting drives. Advantageously, the hydraulic system of the lifting device is constructed in such a way that alternatively hand pumps or electric pumps can be installed.

The support struts 3 are each equipped with a foot element 10, with which they are supported on the ground. Furthermore, in each case a cross member 17 can be arranged between two mutually paired support struts. The cross member 17 is arranged in the bottom area between two lifting columns, which are each associated with a front side of the container-shaped mixing unit. In the exemplary embodiment, the transverse element is fastened to the foot elements 10 in each case.

Each of the lifting supports is detachably connectable to the mixing unit. For this purpose, 4 connecting elements 7 and 8 are provided on the guide strut, which produce a positive connection with the frame structure 9 of the mixing unit. Especially In this case, a support surface 7 is provided with a projection which engages in a recess in the underside of the frame 9 of the mixing unit. Furthermore, in each case a depression is provided on the upper side of the frame 9 of the mixing unit, which can engage a securing element 8 of the guide tube. In this way, a secure positive connection between the lifting columns and the container-shaped mixing unit can be produced.

In FIG. 2a Now, the mixing unit with the lifting device is shown in a frontal view in a low position, in FIG. 2b the same view in the working position of the mixing plant.

In FIG. 3 a top view of the mixing plant is shown with the lifting device. Here, pedestals 15 can be seen, which are arranged on the mixing unit 1. The pedestals 15 can be folded for transport to the mixing unit and folded out at the installation. The pedestals 16 of the lifting device, however, are in FIG. 4 recognizable. These are each attached to the guide tubes of two associated lifting supports and serve the operator to operate the lifting drive.

In FIG. 4 are already mounted more elements of the mixing plant to the mixing unit. In particular, a material elevator 18 is provided, via which material can be lifted from the floor area to the mixing unit. In the transport state, the individual parts of this material elevator are arranged in the mixing unit. To build these can be drained via a winch 21, which has a manual drive. The material elevator has a multi-part elevator web along which a bucket 20 can be lifted. The elevator track consists of a lower element 19, an upper element 19 'and a running rail therebetween. The running rail can be designed in several parts as in the embodiment. The bucket 20 is arranged rotatably about a hinge axis on the elevator track, so that it can be tilted in its upper position and filled in a mixing funnel of the mixing plant. The bucket 20 is lifted by a cable, wherein the drive via the motor 24 takes place.

The mixing plant has an in Fig. 4 Not shown on mixed motor. Furthermore, at the mixing unit in FIG. 4 a transfer hopper 22 is arranged, via which the ready-mixed concrete can be filled in a driven under the mixing unit truck mixer. At the transfer funnel 22, a rubber bowl 23 is arranged, which can be invaginated for transport into the transfer funnel 22. The mixing unit of the mixing unit can mix water, cement, and other aggregates such as sand or gravel to ready-mixed concrete. In particular, the mixing plant has corresponding weighing units.

The mobile mixing plant according to the invention has, in addition to the mixing unit, further devices, which in particular serve to supply materials to the mixing unit. In particular, a cement supply and a supply for aggregates such as sand and gravel is provided. These further elements of the mobile mixing plant are either arranged for transport in a transport container 30, from which they are removed for construction, or in turn designed as a container-shaped finished units 36, 38 or 39, as will be dargstellt hereinafter in detail with reference to individual embodiments.

Based on FIGS. 5a to 5h However, an exemplary embodiment of a method according to the invention for transport and construction of a mobile mixing plant according to the invention will first be described in more detail. The mobile mixing plant in this case has a container-shaped mixing unit 1 and a further container-shaped unit 30. The further container-shaped unit 30 is in the in FIG. 5 shown embodiment, a transport unit. However, it could just as well be an already assembled functional unit.

FIG. 5a now shows the transport condition of the mobile mixing plant. The mixing unit 1 and the further structural unit 30 are on the loading surface 5 of a transport vehicle 6 arranged. In the exemplary embodiment, both units 1 and 30 are arranged on the same loading area 5. Both units have the length of a 20-inch container, so they can easily be placed on a cargo bed for a 40-inch container. Alternatively, however, the two units could also be transported separately on their own transport vehicles.

The lifting device 2 can be detachably connected both to the mixing unit 1 and to the assembly 30. The individual lifting supports of the lifting device are thereby delivered in the embodiment in the transport unit 30, and removed at the installation site first. In this case, the lifting device 2, as in FIG. 5b shown, first connected to the assembly 30. As in FIG. 5c shown, the further unit 30 is now raised on the lifting device 2 so that the transport vehicle can be moved out under the other unit 30. The assembly 30 is then parked on the ground and the lifting device 2 removed again from this.

As in FIG. 5d is shown, the lifting device is then mounted on the mixing unit 1 and as in FIG. 5e shown used for lifting the mixing unit 1, so that the transport vehicle 6 can be produced under the mixing unit.

After moving out of the transport vehicle under the mixing unit, the transverse elements 17 can be attached to stabilize the lifting device. These are each arranged between the two lifting supports on the narrow sides of the container-shaped mixing unit. The longer longitudinal side of the container-shaped mixing unit on the other hand serves as an entrance for the truck mixer, so that the support struts are not connected to one another in the longitudinal direction on the ground in order not to form an obstacle for the truck mixers.

As in FIG. 5f shown, individual components of the mixing plant are now mounted. This z. B. the material elevator 18 constructed, for which the individual parts are discharged from the mixing unit and connected to each other. The material lift is placed on a cross member 17. Furthermore, a material recording 24 mounted. Likewise, the pedestals 15 of the mixing unit are unfolded and the pedestals 16 are mounted on the lifting device. Furthermore, the rubber bowl 23 is folded out of the transfer funnel 22.

In the FIGS. 5a to h are shown further components of the mixing unit, which are pre-assembled on this, z. B. a cement balance 25 for receiving cement from a cement conveyor screw, which will be described below. The cement balance 25 has the shape of a hopper.

Cement is conveyed in the mobile concrete mixing plant according to the invention via the cement screw 32 from a cement holder 31 to the mixing unit 1. The cement screw is doing, as in FIG. 5g shown in a relatively low position of the mixing unit placed on this. This can be z. B. via a wheel loader. Only then is the mixing unit raised to its working position. As a result, the installation of the cement screw is possible without a crane. The finished plant is then in FIG. 5h shown.

In FIG. 6 now the concrete mixing plant according to the invention is shown in a plan view. Here is the cement holder 31 to see. This is a bag cement holder, which can be filled by hand. The bag cement receptacle 31 in this case has a hopper, which can be reached via a staircase, and in which cement can be filled in sacks. At the lower end of the hopper, the cement screw 32 is arranged, via which the cement is conveyed to the mixing unit. There the cement from the cement screw is filled into the mixing plant via the cement scale 25. The cement receptacle 31 is arranged for transport in the transport unit 30 and is removed and set up at the installation site.

Likewise are in FIG. 6 to recognize a staircase and landing to reach the mixing unit. Furthermore, diagonal struts 35 are provided between the lifting columns and the mixing plant, which serve for further stabilization.

For filling bulk materials such. B. sand and gravel is used in the in Fig. 6 shown embodiment, arranged on the transverse side of the mixing unit material receptacle 24 with a plurality of flaps over which bulk materials can be selectively introduced. The bulk materials arrive in the bucket 20 of the material elevator and are raised above this to the mixing unit.

However, according to the invention different material feeds can be selected, which are now based on the FIGS. 7 to 10 be explained in more detail.

In FIG. 7 a mobile concrete mixing plant according to the invention is shown with a row silo 36 in its transport state. The mixing unit 1 shown below and the transport unit 30 correspond to the embodiments shown in the previous figures. In the transport unit 30 while the cement holder 31, the cement screw 32, the lifting device and stairs and landings are housed. The row silo 36, however, forms a finished unit, which is also container-shaped and is delivered to another transport vehicle. The individual units can be lifted in each case via the lifting device according to the invention, so that the transport vehicle can be moved out below them. Finally, the lifting device is then attached to the mixing unit 1 so that it can be raised to its working position, as already described above.

In FIG. 8 Now the ready built mixing plant is shown. The row silo 36 with the two material receptacles 37 is arranged so that the introduced into the material receptacles 37 and 38 bulk material can be transported via a conveyor belt 38 to the material elevator 18. The conveyor belt 38 has an integrated weighing device, via which the introduced quantities of material can be controlled. The material receptacles 37 and 38 each have bulk cylinders, via which the material passes onto the conveyor belt 38. The material receptacles 37 are advantageously filled via a wheel loader 41, for which a corresponding ramp can be provided, as in FIG. 8c is shown. The cement, on the other hand, looks like FIG. 8b seen further supplied via a bag cement receptacle 31. In FIG. 8a Also shown is a truck mixer 40, which is driven under the mixing unit, and is filled via the transfer funnel 22 with concrete.

At the in FIG. 9 and 10 In contrast, the material supply takes place via a bag silo 38, which is connected to the in FIG. 6 attached plant is grown. FIG. 9 shows the mobile mixing plant in its transport position, wherein the bag silo 38 forms a separate unit, which is delivered via another transport vehicle. The bag silo 38 in this case has a plurality of funnels 45, which the in FIG. 6 supply shown material intake with material.

In FIGS. 10a to 10c An exemplary embodiment is shown in which a cement container 39 is used instead of the bag cement receptacle. This has the dimensions of a 20- or 40-inch container, and is provided along its length with a cement conveyor 46, which feeds the cement screw 32. The corresponding material recordings can in turn, as in FIG. 10a shown to be filled via a wheel loader.

The present invention provides a highly flexible, easy to build and easy to transport mobile concrete mixing plant available. In particular, an extremely simple transport can be ensured by the lifting device according to the invention and by the container-shaped units. In addition, the individual units can be flexibly combined so that the system can be adapted to the respective requirements. In particular, the mixing unit according to the invention can be equipped with different material feeds.

The lifting device according to the invention serves both for supporting the mixing unit in its working position, as well as for unloading the mixing unit and optionally of other units from the transport vehicles. For this purpose, the lifting device is releasably connectable to the respective units.

Claims (15)

Mobile concrete mixing plant with at least one assembly, in particular a mixing unit, and a lifting device, wherein the assembly can be raised via the lifting device in a working position and supported relative to the ground, wherein in the working position of the unit from truck mixer are loaded,
characterized,
that said module is transported on the loading platform of a transport vehicle, in particular on the back of a truck tractor. Mobile concrete mixing plant according to claim 1, wherein the lifting device is liftable so that the transport vehicle can be moved out below the unit. Mobile concrete mixing plant according to claim 1 or 2, wherein the lifting device is releasably connectable to the assembly. Mobile concrete mixing plant according to one of the preceding claims, wherein further elements of the concrete mixing plant are combined in one or more further units, wherein the unit or units can be transported on the back of a transport vehicle or are, in particular on the bed of a semitrailer. Mobile concrete mixing plant according to claim 4, wherein the lifting device is releasably connectable to the further structural unit, so that the structural unit can be raised via the lifting device so that the transport vehicle can be moved out below the structural unit. Mobile concrete mixing plant according to one of the preceding claims, wherein the structural unit and / or the structural units have or have the shape and / or dimensions of a container, in particular of 20-inch containers or 40-inch Conatinern. Mobile concrete mixing plant according to one of the preceding claims, wherein the lifting device has a plurality of lifting supports, which are each individually connectable to the structural unit and / or the units, in particular four lifting columns. Mobile concrete mixing plant according to one of the preceding claims, wherein the lifting device has at least one support strut and a guide strut, which is liftable on the support strut via a lifting drive, which is in particular a support tube and a guide tube which surrounds the support tube, wherein advantageously Guide strut can be locked in different positions on the support strut, wherein further advantageously the guide strut has a plurality of locking points at different heights. Mobile concrete mixing plant according to claim 8, wherein the guide strut can be raised by the lifting drive in each case from a locking point to a higher-lying locking point and thus can climb up to the support strut. Mobile concrete mixing plant according to one of the preceding claims, wherein the lifting device and in particular the lifting drive is manually operated, wherein advantageously a hand pump is provided, via which a lifting cylinder can be acted upon, and / or one or more electric pumps for driving the lifting device and in particular the Hubantriebs is provided or are, which is advantageously driven by the power supply of a truck or are. Lifting device, in particular for a mobile concrete mixing plant according to one of the preceding claims, comprising a support strut and a guide strut, which can be raised along the support strut via a lifting drive, wherein the guide strut is releasably connectable to a container-shaped unit and wherein the unit via the lifting device to a working height of more than 2m, advantageously of more than 3 m and further advantageously of more than 4 m can be raised. Lifting device according to claim 11, wherein the lifting device has a plurality of lifting supports, which are each individually connectable to the assembly and each having a support strut and a guide strut, which are liftable along the support strut via a lifting drive. Method for transport and construction of a mobile concrete mixing plant, in particular a mobile concrete mixing plant according to one of the preceding claims, with the steps: Delivering one or more units to one or more transport vehicles, Lifting the at least one unit from the loading area and Raising the unit to a working height. The method of claim 13, wherein the lifting of the at least one structural unit from the loading area by means of the lifting device takes place, after which the transport vehicle is moved out from under the structural unit. A method according to claim 13 or 14, wherein the hoisting device is detachably connected to the at least one structural unit for lifting the structural unit, wherein the concrete mixing plant advantageously consists of several structural units and the lifting device is first connected to a first structural unit for discharging it, and then from the dissolved first unit and connected to a second unit to lift them in a working position and support against the ground.

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