DE202020005601U1 - Transport system for concrete production as well as device for carrying out a method for mobile concrete production - Google Patents

Abstract

Transport system (1) for producing concrete, with
1.1 Storage devices (25, 30, 35, 40) for at least one dry granular material and at least one further component which can be mixed with the granular material, in particular components for the production of concrete, and
1.2 at least one mixing device (70) for at least the material and the component (s), characterized in that
1.3 the mixing device (70) is installed so that it can be operated discontinuously independently of the storage device (25, 30, 35, 40).

Description

The invention relates to a transport system for producing concrete and a device for carrying out a method for mobile concrete production. The mixing of ingredients according to individual recipes on site and / or on the way to a construction site and the pumping of the mixtures produced over a distance and / or to a higher ground level are still challenges.

the end US 10,286,573 B2 a transport system for mixing concrete on a construction site is known. It carries two types of storage devices, namely those for coarser material and those for powder material. A screw conveyor is arranged underneath a row of such containers, which with a certain effectiveness mixes gradually lowered components into a material flow conveyed to the rear of the vehicle while it continues to convey the “mixture”. Mixtures of materials are therefore continuously dosed into this screw conveyor. At the back, without any break in the purely continuous mode of operation, another screw conveyor takes over the material in order to convey it to a certain height. The sequence in which certain components are stored along the conveyor screw, known as a mixer, appears to have been carefully considered. The advantages of this known system are compactness and low overall height.

DE 10 2016 203 719 A1 discloses a vehicle, a so-called truck mixer, which can carry a certain amount of a ready-to-use flowable medium, in particular concrete, with it in a rotating drum.

EP 3 075 507 B1 proposes a transport vehicle which carries dry premixed components, for example for shotcrete, in a rotatably mounted mixing drum, which dry mixture is mixed at the destination with water that can also be carried on the transport vehicle to form a workable flowable mass.

It is desirable, particularly in view of the limited space available on inner-city construction sites, to provide a compact mobile system that can deliver concrete according to use-oriented, individual recipes. It is also desirable to make smaller amounts of concrete available in portions, for example in order to take into account the comparatively often low material requirements for renovations or conversions of individual objects.

Based on this prior art, the aim of the invention is to propose an improved or at least further solution for a mobile system for providing concrete and the use of such a system which as far as possible avoids or at least reduces some of the disadvantages known in the prior art.

The object is achieved according to the invention by means of a transport system according to claim 1, comprising its characterizing features, and by means of a method for mobile concrete production according to claim 13, comprising its characterizing features.

Advantageous embodiments of the invention are specified in the respective subclaims and the description and the drawings.

A generic transport system for producing concrete is equipped with storage devices for separate storage of at least one dry granular material and at least one further component which can be mixed with the granular material, in particular components for the production of concrete.

The generic transport system has at least one mixing device for at least the material and the component or components.

According to the invention, the mixing device is intended to be mixed independently of the storage device. A discontinuous process is installed.

A generic method for mobile concrete production, in particular for delivering and mixing concrete at a delivery point, is developed according to the invention, in that the dry and liquid materials required for production are delivered separately in the transport system that is at least predominantly automated on site according to an individually determinable Recipe, the materials are fed to a discontinuous mixing device, and that after a flowable mixture has been completed, a pumping device pumps the concrete out of the mixing device through a take-off connection to overcome a certain height difference.

According to an advantageous embodiment of the production process, it is a discontinuous mixing process for the production of concrete in portions.

According to an advantageous embodiment of a transport system according to the invention, the transport system as a whole is on one At least one pumping device is arranged on the receiving support frame for pumping the mixtures produced.

It is advantageous to be able to determine mixing times and metering times and metering quantities or inflow speeds in discontinuous mixer operation free of a continuous process. Because of this freedom gained, it is now only possible to provide optimal conveying routes or pipe diameters for certain recipes, in addition to providing concrete with the same transport system, as well as screed or mortar.

By stocking all the materials required for the production of concrete, mortar or screed, including the water required for this, in the mobile transport system according to the invention and by equipping the mobile transport system with its own drive, the mobile transport system can work completely independently until the supply it carries is used up without permanent connection to external energy and material supply systems.

The mobile transport system can produce the required amount and composition of concrete, mortar or screed in portions. Unmixed storage material can be stored. With a pump integrated in the transport system, a prepared mixture can be delivered directly through the transport system to a higher level or over a greater distance. This means that the transport system is extremely flexible with regard to the formulations of the mixtures produced and with regard to the time and place of provision.

The transport system can be built on a semi-trailer or a drawbar trailer, for example, so that it can be moved by any suitable towing vehicle. Due to its own drive, the transport system is not dependent on a towing vehicle as a drive source to operate the system components. A towing vehicle is therefore not necessarily tied for the duration of the stationary use of the transport system, but can be used for other transport tasks if necessary.

According to an advantageous embodiment, the transport system installed on a carrier vehicle, preferably decoupled, has its own drive, its own drive energy store, its own material storage device and a further storage device for additives.

According to a further advantageous embodiment, the at least one mixing device has a mixing container fixed at the bottom in the transport system and at least one mixing arm rotatable about a vertical axis, with a direct, exclusively gravity-driven substance feed with metering device preferably being arranged above the mixing container.

According to a further advantageous embodiment, the mixing device is equipped with at least one weighing cell which is supported against the transport system and which is particularly preferably integrated in one or in the receptacles of the mixing container.

According to a further advantageous embodiment, a first storage container is connected to a conveying device, which is intended to introduce coarse dry material, at least mainly with grain sizes between 20 mm and 70 mm, into the mixing device from above. It is preferably connected to the conveying device as a funnel-shaped storage container with a connection at the bottom, particularly preferably extending over a large part of the length of the transport system. The storage container has its center of gravity, seen in the direction of travel, in the front half of the transport system. Because of the driving characteristics and the standing characteristics of the transport system, this is an advantage for certain partial emptying.

According to a further advantageous embodiment, a second storage container is connected to the or a further conveying device, which is intended to introduce fine, dry material, in the grain size range of less than / equal to 2 mm, into the mixing device from above.

According to a further advantageous embodiment, a third storage container without a conveying device, preferably in the shape of a funnel with a metering slide at the bottom, is arranged above the mixing device, in particular for storing and metering cement.

According to a further advantageous embodiment, the lower end of the transport system is formed by flat support surfaces of a support frame on which the transport system is mounted. If necessary, alternatively, the mixing device is directly or indirectly embedded or placed in or on the support frame, in particular with a pump unit integrated at the bottom, particularly preferably arranged at the rear and at the bottom of the transport system when viewed in the direction of travel.

According to a further advantageous embodiment, the transport system has, in addition to storage containers for dry or flowable wet to moist granular material, at least one liquid storage container for water and / or liquid additives, particularly preferably in the middle to rear area as seen in the direction of travel, utilizing space that is left free by other funnel-shaped containers.

According to a further advantageous embodiment, the pumping device is suitable for conveying mixtures provided by the mixing device to a higher level against the force of gravity.

According to a further advantageous embodiment, the transport system is used on various motorized or non-motorized carrier vehicles or even without a rollable base, for example decoupled on legs.

The invention is explained further in the following in the drawings, showing an exemplary embodiment without restricting the scope of protection thereto.

• 1 eine perspektivische Ansicht eines Transportsystems zum Lagern von mischbaren Bestandteilen, insbesondere zur Herstellung von Beton, zum Mischen der Bestandteile und zum Pumpen der hergestellten fließfähigen Mischung und
• 2 eine Seitenansicht eines mobilen Transportsystems zum Lagern von mischbaren Bestandteilen, insbesondere zur Herstellung von Beton, zum Mischen der Bestandteile und zum Pumpen der hergestellten fließfähigen Mischung, positioniert auf einem Trägerfahrzeug.

Show it

• 1 a perspective view of a transport system for storing mixable components, in particular for the production of concrete, for mixing the components and for pumping the produced flowable mixture and
• 2 a side view of a mobile transport system for storing mixable components, in particular for the production of concrete, for mixing the components and for pumping the produced flowable mixture, positioned on a carrier vehicle.

1 shows a transport system in a perspective view 1 According to an advantageous embodiment for storing miscible components with a grain diameter of 32 millimeters or less, particularly preferably with a diameter of 25 millimeters or less, in particular for the production of concrete, mortar or screed, for mixing the components and for pumping the produced flowable mixture over a distance and / or to a higher ground level.

A support frame is clearly shown 20th , preferably as a metal construction, mainly made of suitable pipe and / or profile material, which are the essential components of the transport system 1 records. A first storage container 30th is preferably intended to hold gravel. The transport system 1 has a second storage container in the embodiment shown 25th , preferably provided for receiving sand. The capacity of the second storage container 25th is 5.7 cubic meters in the embodiment shown.

The first storage container 30th (Gravel) is next to the second storage container 25th arranged. The capacity of the first storage container 30th is also 5.7 cubic meters in the embodiment shown and is designed as a second container half, with a partition along the vehicle center axis oriented in the direction of travel representing the division.

A third storage container 35 , preferably provided for receiving cement, is adjacent to the storage containers 25th , 30th directly above a mixing device 70 positioned. The capacity of the third storage container 35 is three tons of cement in the embodiment shown.

The storage containers 25th , 30th , 35 are preferably made of metal, for example composed of suitably cut steel or aluminum plates in a welded construction. The side walls of the storage containers 25th , 30th , 35 are at least partially beveled and the container bottoms are at least partially inclined downward to form a spatially limited deepest point in the container at which the bulk material in the respective container collects due to gravity.

The storage container 35 , is with a cover 36 equipped to protect the cement in the container from moisture and thus from unwanted premature hardening.

Below the storage containers 25th , 30th are in the embodiment shown here three pieces of fourth storage containers 40 recognizable, which are preferably provided for the absorption of water. The capacity of the fourth storage containers 40 together is preferably two thousand seven hundred liters.

Not visibly shown are three further storage containers, which are provided for holding preferably thirty liters of additives each, in particular additives for a concrete, mortar or screed recipe.

The transport system 1 has conveying devices and metering devices, only partially visible in this view, to get out of the storage containers 25th , 30th , 35 , 40 and the storage containers for additives, which are not shown visibly, can be taken from defined quantities of the respective contents and ultimately from a mixing container 72 a mixing device 70 to feed. Partially A conveyor is shown visibly 50 which are used to transport sand and / or gravel from the first and second storage container 30th , 25th to the mixing device 70 is provided.

A metering device is partially visible 60 , which is used to dose cement from the third storage container 35 is provided.
The conveying and dosing devices are controlled by a control 100 addressed. Provision is preferably made for the weights of the third storage container to be used to control the mixing process, in particular to control the quantity of the constituents to be mixed 35 and the mixing device 70 including the materials contained therein by measuring technology and to process them using control technology.

The determination of the amount of sand and / or gravel involved in a mixing process in the mixing device 70 are supplied, is preferably done by determining the weight increase of the mixing device 70 . The determination of the amount of cement which a mixing process in the mixing device 70 is supplied, is done by measuring the weight loss of the third storage container 35 , which is intended to hold cement. The ultimately the mixing device 70 The water and additive quantities supplied are measured via at least one flow rate measuring device (not shown here) in the respective conveying device for the water and the additive and / or by means of a load cell 74 determined. The additives can either be fed directly into the mixing device 70 be promoted or that in the mixing device 70 water to be pumped can be added.

In an advantageous development of the invention, the control 100 , Recipes, especially for concrete, mortar and screed, and assigned machine and process parameters can be saved. The controller also has 100 via interfaces for sending and receiving data. This also includes, for example, the connection of a printer for printing out delivery notes. It is also conceivable to connect a computer or storage medium of the recipient of a delivery, for example to pass on the mixture recipe and machine parameters for documentation or for quality assurance purposes.

In the embodiment shown, the mixing device is 70 Designed as a planetary mixer with a diameter of 1800 mm and two rotating and one fixed mixer arm. The capacity of the mixer 70 is a maximum of 750 1, of compacted concrete 500 1 can be absorbed.

The transport system 1 for storing miscible components, in particular for the production of concrete, mortar or screed, for mixing the components and for pumping the produced flowable mixture has its own drive 90 equipped, which is preferably designed as a diesel engine. The drive 90 is made from a drive energy store 91 fed, which is preferably designed as a diesel tank.

Through your own drive 90 can the transport system 1 operated independently, without a towing vehicle. It is preferably provided by means of the drive 90 both to generate electricity and to drive a hydraulic system. The hydraulic system is used to operate the mechanical components of the transport system, such as a mixer drive 71 , intended. The one from the drive 90 The electrical current produced is preferably used to operate a controller 100 and other electricity consumers of the transport system 1 such as servomotors, valves, sensors or headlights.

It is planned to equip both the hydraulic and the electrical system with interfaces for feeding in hydraulic and / or electrical energy from external sources. This enables the transportation system to operate 1 without the drive 90 possible, ie the transport system 1 can be operated without local exhaust emissions such as diesel exhaust and is therefore also suitable for tunnel operation, for example.

Downstream of the mixing device 70 is a pumping device 80 , preferably provided for pumping flowable concrete, mortar or screed from the mixing device 70 the pumping device 80 is feedable. In the embodiment shown, the pumping device is 80 below the mixing device 70 arranged so that a flowable mixture due to gravity from the mixing device 70 into the pumping device 80 can flow.

For revision of the transport system 1 , so for example for the control, maintenance and cleaning of system components is the transport system 1 with revision aids 110 equipped, which are designed, for example, as climbing aids to facilitate or enable machine operators or technical staff to access the various system components.

2 shows a transport system in a side view 1 for storing miscible components, in particular for producing concrete, mortar, screed or the like, for mixing the components and for pumping the produced flowable mixture, positioned on a wheeled vehicle 11 rollable carrier vehicle 10 . The carrier vehicle 10 is designed in the embodiment shown as a three-axle semi-trailer for transport by a tractor unit.

A recording 13th is for connecting a tractor unit to the carrier vehicle 10 intended. Parking supports 12th , which on a carrier vehicle body 14th are attached, are provided that support coupling and uncoupling and a safe stand of the carrier vehicle 10 guarantee even without the tractor being coupled.
In a second, not visible embodiment, the carrier vehicle can be designed as a conventional trailer with a drawbar. The number of axles of the carrier vehicles in a first and a second embodiment can be different.
In a third, not visible embodiment, the transport system 1 not permanently mounted on a carrier vehicle, but designed as a mobile transport system for transport on any suitable transport vehicle. In this case the transport system would 1 be equipped with suitable erection devices such as legs, which are preferably on the support frame 20th are attached.

In a fourth embodiment, not shown, the transport system 1 be permanently mounted on a suitable motorized vehicle such as a truck.

In the side view shown is a support frame 20th on the transport vehicle body 14th put on. The support frame 20th is fixed to the transport vehicle body via suitable connections, preferably screw connections 14th tied together. The support frame 20th is to accommodate the essential components of the transport system 1 intended. The support frame takes the front in the direction of travel 20th a drive 90 and a drive energy store 91 on. The drive 90 and the drive energy storage 91 are designed in the embodiment shown as a diesel engine and diesel tank. Other forms of drive and energy storage are also conceivable here.

In the side view to the left of the drive energy storage 91 are three fourth storage containers 40 , which are preferably provided for receiving water, on the support frame 20th appropriate.
In the side view to the left of the fourth storage containers 40 is a funding agency 50 shown partially visible, which is provided, sand from a second storage container 25th and / or gravel from a first storage container 30th a mixing device 70 to feed.

The mixing device 70 is located to the left of the fourth storage containers in the side view 40 and the conveyor 50 , the conveyor 50 the mixing device 70 towered over a bit. The mixing device 70 it is provided that miscible components for the production of concrete, mortar or screed in particular are mixed with one another according to defined parameters, for example for mixing time and mixing speed.

The miscible constituents are conveyed by the conveying device before or during an ongoing mixing process 50 and further conveying devices, not shown, of the mixing device 70 supplied in fixed quantities. The dosing of the miscible components takes place via an interaction of a control, various sensors and dosing devices. A metering device is clearly shown 60 which enables or blocks the addition of cement.

Diagonally below the mixing device 70 is a pumping device 80 at the rear end of the support frame 20th arranged. The pumping device 80 takes over in the mixing device 70 produced flowable mixture. In the embodiment shown, due to the arrangement of the pumping device 80 below the mixing device 70 , the flowable mixture using gravity, without mechanical assistance, from the mixing device 70 into the pumping device 80 be convicted. The pumping device 80 is with a connector 81 equipped, which allows the attachment of suitable lines, i.e. pipes, hoses or the like for transporting the flowable mixture.

List of reference symbols

1

Transport system

10

Carrier vehicle

11

Transport wheels

12th

Parking support

13th

recording

14th

Carrier vehicle body

20th

Support frame

25th

second storage container (sand)

30th

first storage container (gravel)

35

third storage container (cement)

36

cover

40

Liquid storage container (water)

50

Conveyor

60

Dosing device

70

Mixing device

71

Mixer drive

72

Mixing tank

74

Load cell

80

Pumping device

81

Acceptance connection

90

drive

91

Drive energy storage

100

steering

110

Revision assistance

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• US 10286573 B2 [0002]
• DE 102016203719 A1 [0003]
• EP 3075507 B1 [0004]

Claims (14)

Transport system (1) for producing concrete, with 1.1 storage devices (25, 30, 35, 40) for at least one dry granular material and at least one further component which can be mixed with the granular material, in particular components for producing concrete, and 1.2 at least one mixing device (70 ) for at least the material and the component (s), characterized in that 1.3 the mixing device (70) is installed and can be operated discontinuously independently of the storage device (25, 30, 35, 40). Transport system according to Claim 1 , characterized in that at least one pumping device (80) is arranged below the mixing device (70) on a support frame (20) which holds the transport system (1) as a whole for pumping the mixtures produced in the mixing device (70). Transport system (1) according to one of the Claims 1 or 2 , characterized in that the transport system (1) installed on a carrier vehicle (10), preferably decoupled, has its own drive (90), its own drive energy store (91), its own material storage device (25, 30, 35, 40) and another Has storage device of additives. Transport system (1) according to one of the preceding claims, characterized in that the at least one mixing device (70) has a mixing container (72) fixed at the bottom in the transport system (1) and at least one mixing arm rotatable about a vertical axis, preferably above the mixing container ( 72) a direct, exclusively gravity-related substance input with a metering device (60) is arranged. Transport system (1) according to Claim 4 , characterized in that the mixing device (70) is equipped with at least one weighing cell (74) supported against the transport system (1), particularly preferably integrated in one or in the receptacles of the mixing container (72). Transport system (1) according to one of the preceding claims, characterized in that a first storage container (30) is connected to a conveying device (50), the coarse dry material, with at least mainly grain sizes between 20 mm and 70 mm, into the mixing device from above (70) is intended to be entered, in particular as a funnel-shaped storage container with a connection at the bottom to the conveyor device (50), particularly preferably extending over a large part of the length of the transport system (1), with the focus in the front half of the transport system (1) as seen in the direction of travel. . Transport system (1) according to one of the preceding claims, characterized in that a second storage container (25) is connected to the or a further conveyor device (50), which feeds fine, dry material, in the grain size range less than / equal to 2 mm, from above into the Mixing device (70) is intended to be entered. Transport system (1) according to one of the preceding claims, characterized in that a third storage container (35) without a conveyor device (50), preferably funnel-shaped with a metering slide at the bottom, is arranged above the mixing device (70), in particular for storing and metering cement. Transport system (1) according to one of the preceding claims, characterized in that 9.1 the lower end of the transport system (1) is formed by flat supporting surfaces of a support frame (20) on which the transport system (1) is mounted, and / or 9.2 that the mixing device (70) is embedded or placed directly or indirectly in or on the support frame (20), in particular with a pump unit integrated at the bottom, particularly preferably at the rear and bottom of the transport system (1) viewed in the direction of travel. Transport system (1) according to one of the preceding claims, characterized in that the transport system (1) in addition to storage containers (25, 30, 35) for dry or flowable wet to moist granular material at least one liquid storage container (40) for water and / or liquid additives has, particularly preferably in the middle to rear area as seen in the direction of travel, utilizing space that other funnel-shaped containers leave free. Transport system (1) according to one of the preceding claims, characterized in that the pumping device (80) is suitable for conveying mixtures provided by the mixing device (70) against gravity to a higher level. Transport system (1) according to one of the preceding claims, characterized in that the transport system (1) is used on various motorized or non-motorized carrier vehicles (10) or without a rollable base, for example decoupled on legs. Device for carrying out a method for mobile concrete production, in particular for delivering and mixing concrete at a delivery point, characterized in that 13.1 dry and liquid materials required for production are delivered separately in the transport system (1), 13.2 the materials are fed to a discontinuous mixing device (70) on site at least predominantly automatically according to an individually determinable recipe, and 13.3 a pumping device after completion of a flowable mixture (80) pumps the concrete out of the mixing device (70) through a tapping connection (81) to overcome a certain height difference. Device for carrying out a method according to Claim 13 , characterized in that it is a discontinuous mixing process for the production of concrete in portions.

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