EP3583315A1 - Device for mixing and conveying high-viscosity materials - Google Patents

Device for mixing and conveying high-viscosity materials

Info

Publication number
EP3583315A1
EP3583315A1 EP18706426.6A EP18706426A EP3583315A1 EP 3583315 A1 EP3583315 A1 EP 3583315A1 EP 18706426 A EP18706426 A EP 18706426A EP 3583315 A1 EP3583315 A1 EP 3583315A1
Authority
EP
European Patent Office
Prior art keywords
compressed air
hydraulic
main
auxiliary
hydraulic pump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP18706426.6A
Other languages
German (de)
French (fr)
Other versions
EP3583315B1 (en
Inventor
Matthias HÖRZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Putzmeister Moertelmaschinen GmbH
Original Assignee
Putzmeister Moertelmaschinen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Putzmeister Moertelmaschinen GmbH filed Critical Putzmeister Moertelmaschinen GmbH
Priority to PL18706426T priority Critical patent/PL3583315T3/en
Publication of EP3583315A1 publication Critical patent/EP3583315A1/en
Application granted granted Critical
Publication of EP3583315B1 publication Critical patent/EP3583315B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
    • F04B15/02—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts the fluids being viscous or non-homogeneous
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/04—Combinations of two or more pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity

Definitions

  • the invention relates to a device for mixing and conveying thick matter.
  • U 1 discloses a compressed air conveying device with a plurality of hydraulic pumps.
  • the invention has for its object to provide a device for mixing and delivery of thick matter, which allows the best possible use of the available electrical power at certain electrical connection conditions.
  • the invention achieves the object by providing a device for mixing and conveying high solids according to claim 1.
  • the device is suitable for mixing and conveying thick matter.
  • the device has a main mains voltage connection.
  • the main mains voltage terminal may be embodied, for example, as a three-phase electrical connector.
  • the three-phase electrical plug connector may for example be designed such that it can be inserted into a corresponding socket of a building distribution box.
  • the socket of the building distribution box can provide a conventional three-phase connection with a certain connected load.
  • the apparatus further includes a main electric motor electrically connected to the main mains voltage terminal.
  • the main electric motor may be, for example, a three-phase electric motor, for example a synchronous motor or an asynchronous motor.
  • the main mains voltage connection can supply the main electric motor with electrical energy / power.
  • the electrical energy / power may be provided by the building services distribution box. The electrical energy / power can be used to drive the main electric motor.
  • the apparatus further includes a main hydraulic pump, the main hydraulic pump being driven by the main electric motor.
  • the main hydraulic pump feeds a mixer hydraulic circuit and a compressed air hydraulic circuit.
  • the main hydraulic pump can feed the mixer hydraulic circuit independently of the compressed air hydraulic circuit.
  • the main electric motor and the main hydraulic pump can supply electric power supplied to the main electric motor via the main power voltage terminal convert hydraulic energy / power that is fed into the mixer hydraulic circuit and / or the compressed air hydraulic circuit after conversion.
  • the device further comprises a hydraulic mixer drive, which is fed from the mixer hydraulic circuit.
  • the hydraulic mixer drive is provided for mixing or producing the thick material.
  • Thick stuff can be a mushy mixture of different substances.
  • Dickgut is in particular mortar, cement, screed or concrete, in each case in a mixed and / or eligible state.
  • the device further comprises a hydraulic compressor drive, which is fed from the compressed air hydraulic circuit.
  • the hydraulic compressor drive is intended for compressed air generation.
  • the compressed air generated by the hydraulic compressor drive can be used for example to promote the thick material.
  • the generated compressed air may have a pressure of, for example, 0 bar to 13 bar.
  • the device has an additional mains voltage connection.
  • the auxiliary mains voltage terminal may be embodied, for example, as a three-phase electrical connector.
  • the three-phase electrical plug connector may for example be designed such that it can be inserted into a corresponding socket of a building distribution box.
  • the socket of the building distribution box can provide a conventional three-phase connection with a certain connected load.
  • the device has an optional auxiliary hydraulic system.
  • the auxiliary hydraulic system has an additional electric motor.
  • the auxiliary electric motor is electrically connected to the auxiliary mains voltage connection.
  • the auxiliary electric motor is operable independently of the main electric motor.
  • the additional electric motor may for example be an electric motor operable with three-phase current, for example a synchronous motor or an asynchronous motor.
  • the auxiliary electric motor can be supplied with electrical energy / power via the additional mains voltage connection.
  • the electrical energy / power may be provided by the building services distribution box.
  • the electrical energy / power can be used to drive the auxiliary electric motor.
  • the main power terminal three-phase connector and the auxiliary power terminal connection three-phase connector can be simultaneously inserted into corresponding sockets of the building distribution box, so that both the main electric motor and the auxiliary electric motor are supplied with electrical energy / power.
  • the auxiliary hydraulic system further includes an auxiliary hydraulic pump.
  • the auxiliary hydraulic pump is formed separately from the main hydraulic pump.
  • the auxiliary hydraulic pump is driven by means of the additional electric motor.
  • the auxiliary hydraulic system may be hydraulically connected to the compressed air hydraulic circuit, optionally with the interposition of hydraulic components such as valves, etc.
  • the device further comprises a control device.
  • the control device can be, for example, a computer, microcontroller or a mechanical circuit.
  • the control device is designed to control the auxiliary hydraulic system depending on a compressed air requirement of the compressed air generation in such a way that the additional hydraulic pump feeds the compressed air hydraulic circuit additionally to and / or simultaneously with the main hydraulic pump.
  • the control device can be designed to determine the compressed air requirement based on sensor signals and / or operating states of the device.
  • the compressed air requirement for example, by the consumption of compressed air, especially at the start of delivery, or caused by leakage.
  • the compressed air requirement may, for example, depend on a required volume flow and / or a required pressure of the compressed air and be determined from at least one of these variables.
  • the compressed air requirement may be a future compressed air requirement or a current compressed air requirement.
  • the control device can be designed, for example, to determine the compressed air requirement as increased or not increased.
  • the auxiliary electric motor in conjunction with the auxiliary hydraulic pump may convert electrical energy / power provided to the auxiliary electric motor via the auxiliary mains voltage terminal into hydraulic energy / power that is fed into the compressed air hydraulic circuit.
  • the hydraulic energy / power of the auxiliary hydraulic pump in the compressed air hydraulic circuit for example, the increased compressed air demand can be taken into account.
  • control device is designed to activate or deactivate the additional electric motor as a function of the compressed air requirement.
  • the control device may be configured to activate the additional electric motor, if one increased compressed air requirement is determined, and to deactivate the additional electric motor, if a non-increased compressed air demand is determined.
  • the auxiliary hydraulic system has a valve controlled by means of the control device.
  • the valve may be a hydraulic valve.
  • the valve may be located between the auxiliary hydraulic pump and the compressed air hydraulic circuit.
  • the valve allows in a first switching position the additional food of the compressed air hydraulic circuit by means of the additional hydraulic pump.
  • the valve decouples the additional hydraulic pump from the compressed air hydraulic circuit in a second switching position.
  • the control device is designed to control the valve depending on the compressed air requirement such that it assumes its first switching position or its second switching position as a function of the compressed air requirement. If, for example, the compressed air requirement is determined to be increased by the control unit, the control unit controls the valve such that the valve assumes its first switching position. If, for example, the compressed air requirement is not determined to be increased by the control unit, the control unit controls the valve such that the valve assumes its second switching position.
  • the control device is designed to permanently activate the main electric motor during a thick matter delivery operation, so that the compressed air hydraulic circuit is fed permanently from the main hydraulic pump during the thick matter delivery process.
  • the main hydraulic pump is designed to change a ratio between a power fed into the mixer hydraulic circuit and a power fed into the compressed air hydraulic circuit as a function of a control signal.
  • the main hydraulic pump may be for this purpose, for example, an electro-proportional controlled variable displacement pump or having such a pump.
  • the control device is designed for this case to generate the control signal in dependence on the compressed air requirement. For example, if no compressed air is needed, the controller may generate the control signal such that all power provided by the main hydraulic pump is fed to the mixer hydraulic circuit.
  • the control device can generate the control signal in such a way that a portion of the power generated by the main hydraulic pump, which is dependent on the compressed air demand, is fed into the compressed air hydraulic circuit.
  • the main mains voltage connection has a connected load which is greater than a connected load of the additional mains voltage connection.
  • the main mains voltage connection is limited to 32 amps of current load and the additional mains voltage connection is limited to 16 amps of current load.
  • the device has a compressed air reservoir.
  • the compressed air reservoir stores the compressed air generated by the hydraulic compressor drive.
  • the compressed air reservoir may be, for example, a metal chamber.
  • the device has a pressure sensor coupled to the control device. The pressure sensor measures the actual pressure of the compressed air within the compressed air reservoir.
  • the control device is designed to determine the compressed air requirement based on the actual pressure.
  • the device has a working state which promotes thick matter and an operating state which does not promote the thick matter.
  • the control device determines the compressed air demand as increased as soon as the actual pressure falls below a first threshold. Otherwise, the compressed air requirement is determined as not increased.
  • the first threshold value may be a predetermined or specifiable pressure of the compressed air stored in the compressed-air storage, for example 10 bar. If the control device determines the compressed air requirement as increased, the control device controls the auxiliary hydraulic system in such a way that the auxiliary hydraulic pump feeds the compressed air hydraulic circuit in addition to the main hydraulic pump. If the control device determines that the compressed air requirement is not increased, the control device controls the auxiliary hydraulic system in such a way that the auxiliary hydraulic pump does not supply the compressed air hydraulic circuit.
  • Fig. 1 shows a first embodiment of a device for mixing and conveying of thick materials
  • Fig. 2 shows another embodiment of a device for mixing and conveying of
  • Fig. 1 shows an apparatus 1000 for mixing and conveying of thick matter, here screed.
  • the device 1000 has a main electric motor 20, which is electrically connected to a main mains voltage terminal 10.
  • the main mains voltage terminal 10 is designed for a maximum current load of 32 amperes.
  • the main mains voltage connection 10 has a three-phase electrical plug connector 160, which is connected to a corresponding socket 170 of a building power distributor 180 with suitable connection power.
  • the apparatus 1000 has a main hydraulic pump 30 which is driven by the main electric motor 20.
  • the main hydraulic pump 30 feeds a mixer hydraulic circuit 40 and a compressed air hydraulic circuit 50.
  • the main hydraulic pump 30 is an electro-proportionally controlled variable displacement pump.
  • the main hydraulic pump 30 is configured to adjust, in response to a control signal S, a ratio between a power input to the mixer hydraulic circuit 40 and a power input to the compressed air hydraulic circuit 50.
  • a hydraulic mixer drive 60 is connected, fed from the mixer hydraulic circuit 40 mixes the screed.
  • the compressed air hydraulic circuit 50 a hydraulic compressor drive 70 is connected, which fed from the compressed air hydraulic circuit 50 generates compressed air by sucking air from the environment and compresses them. The compressed air thus generated is stored in a compressed air reservoir 140.
  • the device 1000 further has a control device 120 which generates, inter alia, the control signal S for controlling the main hydraulic pump 30.
  • a pressure sensor 150 is arranged, which measures the actual pressure in the compressed air reservoir 140.
  • the pressure sensor 150 is functional with the controller 120 coupled, so that the control device 120 has knowledge about the pressure in the compressed air reservoir 140.
  • the device 1000 further comprises an auxiliary hydraulic system 90, which has an additional electric motor 100 and an auxiliary hydraulic pump 1 10.
  • the device 1000 further includes an auxiliary mains voltage terminal 80.
  • the auxiliary mains voltage terminal 80 is designed for a maximum current load of 16 amperes.
  • the auxiliary mains voltage terminal 80 has a three-phase electrical connector 161 which is connected to a corresponding socket 171 of the Baustromverteilers 180.
  • the building site distribution board is designed so that the main mains voltage connection 10 can be supplied with a maximum of 32 amps and the additional mains voltage connection 80 at the same time with a maximum of 16 amperes.
  • the additional electric motor 100 is supplied with electrical energy / power via the additional mains voltage connection 80.
  • the additional electric motor 100 is switched on by the control device 120 with increased compressed air requirement.
  • the additional electric motor 100 drives the auxiliary hydraulic pump 1 10.
  • the auxiliary hydraulic pump 110 feeds the compressed air hydraulic circuit 50 in addition to the main hydraulic pump 30.
  • compressed air is taken from the compressed air reservoir 140 in order to convey the thick material.
  • the actual pressure of the compressed air reservoir 140 decreases.
  • the control device 120 constantly compares the measured actual pressure with a first threshold value, for example 10 bar. As soon as the actual pressure drops below the first threshold value, the control device 120 determines an increased compressed air requirement. Then, the control device 120 turns on the auxiliary electric motor 100 so that it also feeds the compressed air hydraulic circuit 50. In a non-promoting the thick matter operating state no compressed air is removed from the compressed air reservoir 140. During loading of the compressed air reservoir 140, the main hydraulic pump 30 feeds the compressed air hydraulic circuit 50, and the actual pressure in the compressed air reservoir 140 increases. As soon as the actual pressure in the compressed air reservoir 140 exceeds a second threshold value, for example 3 bar, the control device 120 determines an increased compressed air requirement.
  • a second threshold value for example 3 bar
  • the controller 120 turns on the auxiliary electric motor 100 to accelerate the charging of the compressed air reservoir 140.
  • the charging process is terminated by, for example, the supply of the compressed air hydraulic circuit 50 is interrupted or followed by a thick material / screed promoting operating state described above.
  • FIG. 2 A variant of the device 1000 'according to the invention is shown in FIG. 2, wherein identical reference numerals are used for identical or functionally equivalent elements and to that extent reference is made to the above embodiments.
  • the auxiliary hydraulic system 90 further has a valve 130 controlled by means of the control device 120, which assumes a first or a second switching position in a control-dependent manner.
  • the valve 130 In its first switching position, the valve 130 allows additional feeding of the compressed air hydraulic circuit 50 by means of the auxiliary hydraulic pump 1 10.
  • the valve 130 In its second switching position, the valve 130 prevents the additional feeding of the compressed air hydraulic circuit 50 by means of the auxiliary hydraulic pump 1 10.
  • the auxiliary electric motor 100 may be permanently active. In the second switching position of the valve 130, the auxiliary electric motor 100 is idling. Only in the second switching position of the valve 130 is a power input in the compressed air hydraulic circuit 50.
  • the device 1000, 1000 'according to the invention for mixing and conveying thick materials enables optimum utilization of the electrical connection power provided by the building-site distributor 180, since both sockets 170 and 171 of the building-site distributor 180 simultaneously supply the device 1000, 1000' with electrical energy / Performance to be used.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

The invention relates to a device (1000) for mixing and conveying high-viscosity materials, having the following: - a main grid voltage connection (10), - a main electric motor (20) which is electrically connected to the main grid voltage connection (10), - a main hydraulic pump (30), said main hydraulic pump (30) being driven by means of the main electric motor (20) and supplying a mixer hydraulic circuit (40) and a compressed air hydraulic circuit (50), - a hydraulic mixer drive (60) which is supplied from the mixer hydraulic circuit (40), said hydraulic mixer drive (60) being provided for mixing the high-viscosity material, - a hydraulic compressor drive (70) which is supplied from the compressed air hydraulic circuit (50), said hydraulic compressor drive (70) being provided for generating compressed air, - an additional grid voltage connection (80), - an additional hydraulic system (90) which has the following: - an additional electric motor (100) which is electrically connected to the additional grid voltage connection (80) and which can be operated independently of the main electric motor (20), and - an additional hydraulic pump (110), said additional hydraulic pump (110) being driven by means of the additional electric motor (100), and - a controller (120) which is designed to actuate the additional hydraulic system (90) depending on a compressed air requirement such that in addition to the main hydraulic pump (30), the additional hydraulic pump (110) also supplies the compressed air hydraulic circuit (50).

Description

Vorrichtung zur Mischung und Förderung von Dickstoffen  Device for mixing and conveying thick matter
Die Erfindung betrifft eine Vorrichtung zur Mischung und Förderung von Dickstoffen. The invention relates to a device for mixing and conveying thick matter.
DE 20 201 1 103 753 U 1 offenbart eine Druckluftfördereinrichtung mit mehreren Hydraulikpumpen. Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zur Mischung und Förderung von Dickstoffen bereitzustellen, die bei bestimmten elektrischen Anschlussbedingungen eine möglichst optimale Nutzung der zur Verfügung stehenden elektrischen Leistung ermöglicht. DE 20 201 1 103 753 U 1 discloses a compressed air conveying device with a plurality of hydraulic pumps. The invention has for its object to provide a device for mixing and delivery of thick matter, which allows the best possible use of the available electrical power at certain electrical connection conditions.
Die Erfindung löst die Aufgabe durch das Bereitstellen einer Vorrichtung zur Mischung und Förderung von Dickstoffen nach Anspruch 1 . Die Vorrichtung ist zur Mischung und Förderung von Dickstoffen geeignet. The invention achieves the object by providing a device for mixing and conveying high solids according to claim 1. The device is suitable for mixing and conveying thick matter.
Die Vorrichtung weist einen Haupt-Netzspannungsanschluss auf. Der Haupt- Netzspannungsanschluss kann beispielsweise als ein elektrischer Drehstrom-Steckverbinder verkörpert sein. Der elektrische Drehstrom-Steckverbinder kann beispielsweise derart ausgebildet sein, dass er in eine korrespondierende Buchse eines Baustromverteilerkastens einsteckbar ist. Die Buchse des Baustromverteilerkastens kann einen herkömmlichen Drehstromanschluss mit einer bestimmten Anschlussleistung zur Verfügung stellen. The device has a main mains voltage connection. The main mains voltage terminal may be embodied, for example, as a three-phase electrical connector. The three-phase electrical plug connector may for example be designed such that it can be inserted into a corresponding socket of a building distribution box. The socket of the building distribution box can provide a conventional three-phase connection with a certain connected load.
Die Vorrichtung weist weiter einen Haupt-Elektromotor auf, der elektrisch mit dem Haupt- Netzspannungsanschluss verbunden ist. Der Haupt-Elektromotor kann beispielsweise ein mit Drehstrom betreibbarer Elektromotor sein, beispielsweise ein Synchronmotor oder ein Asynchronmotor. Über den Haupt-Netzspannungsanschluss kann der Haupt-Elektromotor mit elektrischer Energie/Leistung versorgt sein. Die elektrische Energie/Leistung kann von dem Baustromverteilerkasten bereitgestellt sein. Die elektrische Energie/Leistung kann dazu dienen, den Haupt-Elektromotor anzutreiben. The apparatus further includes a main electric motor electrically connected to the main mains voltage terminal. The main electric motor may be, for example, a three-phase electric motor, for example a synchronous motor or an asynchronous motor. The main mains voltage connection can supply the main electric motor with electrical energy / power. The electrical energy / power may be provided by the building services distribution box. The electrical energy / power can be used to drive the main electric motor.
Die Vorrichtung weist weiter eine Haupt-Hydraulikpumpe auf, wobei die Haupt-Hydraulikpumpe mittels des Haupt-Elektromotors angetrieben ist. Die Haupt-Hydraulikpumpe speist einen Mischer-Hydraulikkreislauf und einen Druckluft-Hydraulikkreislauf. Die Haupt-Hydraulikpumpe kann den Mischer-Hydraulikkreislauf unabhängig vom Druckluft-Hydraulikkreislauf speisen. Der Haupt-Elektromotor und die Haupt-Hydraulikpumpe können elektrische Energie/Leistung, die dem Haupt-Elektromotor über den Haupt-Netzspannungsanschluss bereitgestellt wird, in hydraulische Energie/Leistung umwandeln, die nach der Umwandlung in den Mischer- Hydraulikkreislauf und/oder in den Druckluft-Hydraulikkreislauf eingespeist wird. The apparatus further includes a main hydraulic pump, the main hydraulic pump being driven by the main electric motor. The main hydraulic pump feeds a mixer hydraulic circuit and a compressed air hydraulic circuit. The main hydraulic pump can feed the mixer hydraulic circuit independently of the compressed air hydraulic circuit. The main electric motor and the main hydraulic pump can supply electric power supplied to the main electric motor via the main power voltage terminal convert hydraulic energy / power that is fed into the mixer hydraulic circuit and / or the compressed air hydraulic circuit after conversion.
Die Vorrichtung weist weiter einen hydraulischen Mischerantrieb auf, der aus dem Mischer- Hydraulikreislauf gespeist ist. Der hydraulische Mischerantrieb ist zum Mischen bzw. Herstellen des Dickstoffs vorgesehen. Dickstoff kann eine breiartige Mischung unterschiedlicher Stoffe sein. Bei Dickstoff handelt es sich insbesondere um Mörtel, Zement, Estrich oder Beton, jeweils in einem misch- und/oder förderfähigen Zustand. The device further comprises a hydraulic mixer drive, which is fed from the mixer hydraulic circuit. The hydraulic mixer drive is provided for mixing or producing the thick material. Thick stuff can be a mushy mixture of different substances. Dickgut is in particular mortar, cement, screed or concrete, in each case in a mixed and / or eligible state.
Die Vorrichtung weist weiter einen hydraulischen Kompressorantrieb auf, der aus dem Druckluft-Hydraulikreislauf gespeist ist. Der hydraulische Kompressorantrieb ist zur Drucklufterzeugung vorgesehen. Die mit dem hydraulischen Kompressorantrieb erzeugte Druckluft kann beispielsweise zur Förderung des Dickstoffs genutzt werden. Die erzeugte Druckluft kann einen Druck von beispielsweise 0 bar bis 13 bar aufweisen. The device further comprises a hydraulic compressor drive, which is fed from the compressed air hydraulic circuit. The hydraulic compressor drive is intended for compressed air generation. The compressed air generated by the hydraulic compressor drive can be used for example to promote the thick material. The generated compressed air may have a pressure of, for example, 0 bar to 13 bar.
Die Vorrichtung weist einen Zusatz-Netzspannungsanschluss auf. Der Zusatz- Netzspannungsanschluss kann beispielsweise als ein elektrischer Drehstrom-Steckverbinder verkörpert sein. Der elektrische Drehstrom-Steckverbinder kann beispielsweise derart ausgebildet sein, dass er in eine korrespondierende Buchse eines Baustromverteilerkastens einsteckbar ist. Die Buchse des Baustromverteilerkastens kann einen herkömmlichen Drehstromanschluss mit einer bestimmten Anschlussleistung zur Verfügung stellen. The device has an additional mains voltage connection. The auxiliary mains voltage terminal may be embodied, for example, as a three-phase electrical connector. The three-phase electrical plug connector may for example be designed such that it can be inserted into a corresponding socket of a building distribution box. The socket of the building distribution box can provide a conventional three-phase connection with a certain connected load.
Die Vorrichtung weist ein optionales Zusatz-Hydrauliksystem auf. Das Zusatz-Hydrauliksystem weist einen Zusatz-Elektromotor auf. Der Zusatz-Elektromotor ist elektrisch mit dem Zusatz-Netzspannungsanschluss verbunden. Der Zusatz-Elektromotor ist unabhängig von dem Haupt-Elektromotor betreibbar. Der Zusatz-Elektromotor kann beispielsweise ein mit Drehstrom betreibbarer Elektromotor sein, beispielsweise ein Synchronmotor oder ein Asynchronmotor. Über den Zusatz-Netzspannungsanschluss kann der Zusatz-Elektromotor mit elektrischer Energie/Leistung versorgt sein. Die elektrische Energie/Leistung kann von dem Baustromverteilerkasten bereitgestellt sein. Die elektrische Energie/Leistung kann dazu dienen, den Zusatz-Elektromotor anzutreiben. The device has an optional auxiliary hydraulic system. The auxiliary hydraulic system has an additional electric motor. The auxiliary electric motor is electrically connected to the auxiliary mains voltage connection. The auxiliary electric motor is operable independently of the main electric motor. The additional electric motor may for example be an electric motor operable with three-phase current, for example a synchronous motor or an asynchronous motor. The auxiliary electric motor can be supplied with electrical energy / power via the additional mains voltage connection. The electrical energy / power may be provided by the building services distribution box. The electrical energy / power can be used to drive the auxiliary electric motor.
Falls der Baustromverteilerkasten eine ausreichende Anzahl von Buchsen aufweist, können der Drehstrom-Steckverbinder des Haupt-Netzspannungsanschlusses und der Drehstrom- Steckverbinder des Zusatz-Netzspannungsanschlusses gleichzeitig in jeweils korrespondierende Buchsen des Baustromverteilerkastens gesteckt werden, so dass sowohl der Haupt-Elektromotor als auch der Zusatz-Elektromotor mit elektrischer Energie/Leistung versorgt sind. If the building site distribution box has a sufficient number of sockets, the main power terminal three-phase connector and the auxiliary power terminal connection three-phase connector can be simultaneously inserted into corresponding sockets of the building distribution box, so that both the main electric motor and the auxiliary electric motor are supplied with electrical energy / power.
Das Zusatz-Hydrauliksystem weist weiter eine Zusatz-Hydraulikpumpe auf. Die Zusatz- Hydraulikpumpe ist von der Haupt-Hydraulikpumpe getrennt ausgebildet. Die Zusatz- Hydraulikpumpe ist mittels des Zusatz-Elektromotors angetrieben. Das Zusatz-Hydrauliksystem kann hydraulisch mit dem Druckluft-Hydraulikkreislauf verbunden sein, gegebenenfalls unter Zwischenschaltung von hydraulischen Bauelementen wie Ventilen usw. The auxiliary hydraulic system further includes an auxiliary hydraulic pump. The auxiliary hydraulic pump is formed separately from the main hydraulic pump. The auxiliary hydraulic pump is driven by means of the additional electric motor. The auxiliary hydraulic system may be hydraulically connected to the compressed air hydraulic circuit, optionally with the interposition of hydraulic components such as valves, etc.
Die Vorrichtung weist weiter eine Steuereinrichtung auf. Die Steuereinrichtung kann beispielsweise ein Computer, Mikrokontroller oder eine mechanische Schaltung sein. Die Steuereinrichtung ist dazu ausgebildet, in Abhängigkeit von einem Druckluftbedarf der Drucklufterzeugung das Zusatz-Hydrauliksystem derart anzusteuern, dass die Zusatz- Hydraulikpumpe den Druckluft-Hydraulikkreislauf zusätzlich zu und/oder gleichzeitig mit der Haupt-Hydraulikpumpe speist. The device further comprises a control device. The control device can be, for example, a computer, microcontroller or a mechanical circuit. The control device is designed to control the auxiliary hydraulic system depending on a compressed air requirement of the compressed air generation in such a way that the additional hydraulic pump feeds the compressed air hydraulic circuit additionally to and / or simultaneously with the main hydraulic pump.
Die Steuereinrichtung kann dazu ausgebildet sein, den Druckluftbedarf basierend auf Sensorsignalen und/oder Betriebszuständen der Vorrichtung zu ermitteln. Der Druckluftbedarf kann beispielsweise durch das Verbrauchen von Druckluft, insbesondere beim Förderstart, oder durch Leckage entstehen. Der Druckluftbedarf kann beispielsweise von einen erforderlichen Volumenstrom und/oder einem erforderlichen Druck der Druckluft abhängen und aus mindestens einer dieser Größen ermittelt werden. Der Druckluftbedarf kann ein zukünftiger Druckluftbedarf oder ein aktueller Druckluftbedarf sein. Die Steuereinrichtung kann beispielsweise dazu ausgebildet sein, den Druckluftbedarf als erhöht oder als nicht erhöht zu ermitteln. The control device can be designed to determine the compressed air requirement based on sensor signals and / or operating states of the device. The compressed air requirement, for example, by the consumption of compressed air, especially at the start of delivery, or caused by leakage. The compressed air requirement may, for example, depend on a required volume flow and / or a required pressure of the compressed air and be determined from at least one of these variables. The compressed air requirement may be a future compressed air requirement or a current compressed air requirement. The control device can be designed, for example, to determine the compressed air requirement as increased or not increased.
Der Zusatz-Elektromotor in Verbindung mit der Zusatz-Hydraulikpumpe kann elektrische Energie/Leistung, die dem Zusatz-Elektromotor über den Zusatz-Netzspannungsanschluss bereitgestellt wird, in hydraulische Energie/Leistung umwandeln, die in den Druckluft- Hydraulikkreislauf eingespeist wird. Durch die hydraulische Energie/Leistung der Zusatz- Hydraulikpumpe im Druckluft-Hydraulikkreislauf kann beispielsweise dem erhöhten Druckluftbedarf Rechnung getragen werden. The auxiliary electric motor in conjunction with the auxiliary hydraulic pump may convert electrical energy / power provided to the auxiliary electric motor via the auxiliary mains voltage terminal into hydraulic energy / power that is fed into the compressed air hydraulic circuit. By the hydraulic energy / power of the auxiliary hydraulic pump in the compressed air hydraulic circuit, for example, the increased compressed air demand can be taken into account.
In einer Ausgestaltung der Erfindung ist die Steuereinrichtung dazu ausgebildet, in Abhängigkeit von dem Druckluftbedarf den Zusatz-Elektromotor zu aktivieren oder zu deaktivieren. Die Steuereinrichtung kann dazu ausgebildet sein, den Zusatz-Elektromotor zu aktivieren, falls ein erhöhter Druckluftbedarf ermittelt wird, und den Zusatz-Elektromotor zu deaktivieren, falls ein nicht erhöhter Druckluftbedarf ermittelt wird. In one embodiment of the invention, the control device is designed to activate or deactivate the additional electric motor as a function of the compressed air requirement. The control device may be configured to activate the additional electric motor, if one increased compressed air requirement is determined, and to deactivate the additional electric motor, if a non-increased compressed air demand is determined.
In einer Ausgestaltung der Erfindung weist das Zusatz-Hydrauliksystem ein mittels der Steuereinrichtung angesteuertes Ventil auf. Das Ventil kann ein Hydraulikventil sein. Das Ventil kann zwischen der Zusatz-Hydraulikpumpe und dem Druckluft-Hydraulikreislauf angeordnet sein. Das Ventil ermöglicht in einer ersten Schaltstellung das zusätzliche Speisen des Druckluft- Hydraulikkreislaufs mittels der Zusatz-Hydraulikpumpe. Das Ventil entkoppelt in einer zweiten Schaltstellung die Zusatz-Hydraulikpumpe von dem Druckluft-Hydraulikkreislauf. Die Steuereinrichtung ist dazu ausgebildet, in Abhängigkeit von dem Druckluftbedarf das Ventil derart anzusteuern, dass dieses abhängig von dem Druckluftbedarf seine erste Schaltstellung oder seine zweite Schaltstellung einnimmt. Wird von der Steuereinheit beispielsweise der Druckluftbedarf als erhöht festgestellt, steuert die Steuereinheit das Ventil derart an, dass das Ventil seine erste Schaltstellung einnimmt. Wird von der Steuereinheit beispielsweise der Druckluftbedarf als nicht erhöht festgestellt, steuert die Steuereinheit das Ventil derart an, dass das Ventil seine zweite Schaltstellung einnimmt. In one embodiment of the invention, the auxiliary hydraulic system has a valve controlled by means of the control device. The valve may be a hydraulic valve. The valve may be located between the auxiliary hydraulic pump and the compressed air hydraulic circuit. The valve allows in a first switching position the additional food of the compressed air hydraulic circuit by means of the additional hydraulic pump. The valve decouples the additional hydraulic pump from the compressed air hydraulic circuit in a second switching position. The control device is designed to control the valve depending on the compressed air requirement such that it assumes its first switching position or its second switching position as a function of the compressed air requirement. If, for example, the compressed air requirement is determined to be increased by the control unit, the control unit controls the valve such that the valve assumes its first switching position. If, for example, the compressed air requirement is not determined to be increased by the control unit, the control unit controls the valve such that the valve assumes its second switching position.
In einer Ausgestaltung der Erfindung ist die Steuereinrichtung dazu ausgebildet, den Haupt- Elektromotor während eines Dickstoff-Fördervorgangs dauerhaft zu aktivieren, so dass der Druckluft-Hydraulikkreislauf während des Dickstoff-Fördervorgangs dauerhaft von der Haupt- Hydraulikpumpe gespeist wird. In einer Ausgestaltung der Erfindung ist die Haupt-Hydraulikpumpe dazu ausgebildet, in Abhängigkeit von einem Steuersignal ein Verhältnis zwischen einer in den Mischer- Hydraulikkreislauf eingespeisten Leistung und einer in den Druckluft-Hydraulikkreislauf eingespeisten Leistung zu verändern. Die Haupt-Hydraulikpumpe kann hierzu beispielsweise eine elektro-proportional gesteuerte Verstellpumpe sein oder eine solche Pumpe aufweisen. Die Steuereinrichtung ist für diesen Fall dazu ausgebildet, das Steuersignal in Abhängigkeit von dem Druckluftbedarf zu erzeugen. Wenn beispielsweise keine Druckluft benötigt wird, kann die Steuereinrichtung das Steuersignal derart erzeugen, dass sämtliche mittels der Haupt- Hydraulikpumpe zur Verfügung gestellte Leistung in den Mischer-Hydraulikkreislauf gespeist wird. Wenn Druckluft benötigt wird, kann die Steuereinrichtung das Steuersignal derart erzeugen, dass ein vom Druckluftbedarf abhängiger Anteil der mittels der Haupt- Hydraulikpumpe erzeugten Leistung in den Druckluft-Hydraulikkreislauf gespeist wird. In einer Ausgestaltung der Erfindung weist der Haupt-Netzspannungsanschluss eine Anschlussleistung auf, die größer ist als eine Anschlussleistung des Zusatz- Netzspannungsanschlusses. In one embodiment of the invention, the control device is designed to permanently activate the main electric motor during a thick matter delivery operation, so that the compressed air hydraulic circuit is fed permanently from the main hydraulic pump during the thick matter delivery process. In one embodiment of the invention, the main hydraulic pump is designed to change a ratio between a power fed into the mixer hydraulic circuit and a power fed into the compressed air hydraulic circuit as a function of a control signal. The main hydraulic pump may be for this purpose, for example, an electro-proportional controlled variable displacement pump or having such a pump. The control device is designed for this case to generate the control signal in dependence on the compressed air requirement. For example, if no compressed air is needed, the controller may generate the control signal such that all power provided by the main hydraulic pump is fed to the mixer hydraulic circuit. If compressed air is required, the control device can generate the control signal in such a way that a portion of the power generated by the main hydraulic pump, which is dependent on the compressed air demand, is fed into the compressed air hydraulic circuit. In one embodiment of the invention, the main mains voltage connection has a connected load which is greater than a connected load of the additional mains voltage connection.
In einer Ausgestaltung der Erfindung ist der Haupt-Netzspannungsanschluss auf 32 Ampere Strombelastung begrenzt und der Zusatz-Netzspannungsanschluss ist auf 16 Ampere Strombelastung begrenzt. In one embodiment of the invention, the main mains voltage connection is limited to 32 amps of current load and the additional mains voltage connection is limited to 16 amps of current load.
In einer Ausgestaltung der Erfindung weist die Vorrichtung einen Druckluftspeicher auf. Der Druckluftspeicher speichert die von dem hydraulischen Kompressorantrieb erzeugte Druckluft. Der Druckluftspeicher kann beispielsweise eine Metallkammer sein. Des Weiteren weist die Vorrichtung einen mit der Steuereinrichtung gekoppelten Drucksensor auf. Der Drucksensor misst den Ist-Druck der Druckluft innerhalb des Druckluftspeichers. Des Weiteren ist die Steuereinrichtung dazu ausgebildet, basierend auf dem Ist-Druck den Druckluftbedarf zu ermitteln. In one embodiment of the invention, the device has a compressed air reservoir. The compressed air reservoir stores the compressed air generated by the hydraulic compressor drive. The compressed air reservoir may be, for example, a metal chamber. Furthermore, the device has a pressure sensor coupled to the control device. The pressure sensor measures the actual pressure of the compressed air within the compressed air reservoir. Furthermore, the control device is designed to determine the compressed air requirement based on the actual pressure.
In einer Ausgestaltung der Erfindung weist die Vorrichtung einen den Dickstoff fördernden Betriebszustand auf und einen den Dickstoff nicht fördernden Betriebszustand auf. In one embodiment of the invention, the device has a working state which promotes thick matter and an operating state which does not promote the thick matter.
Im Dickstoff fördernden Betriebszustand ermittelt die Steuereinrichtung den Druckluftbedarf als erhöht, sobald der Ist-Druck einen ersten Schwellenwert unterschreitet. Andernfalls wird der Druckluftbedarf als nicht erhöht bestimmt. Der erste Schwellenwert kann ein vorgegebener oder vorgebbarer Druck der im Druckluftspeicher gespeicherten Druckluft sein, beispielsweise 10 bar. Ermittelt die Steuereinrichtung den Druckluftbedarf als erhöht, steuert die Steuereinrichtung das Zusatz-Hydrauliksystem derart an, dass die Zusatz-Hydraulikpumpe den Druckluft- Hydraulikkreislauf zusätzlich zu der Haupt-Hydraulikpumpe speist. Ermittelt die Steuereinrichtung den Druckluftbedarf als nicht erhöht, steuert die Steuereinrichtung das Zusatz-Hydrauliksystem derart an, dass die Zusatz-Hydraulikpumpe den Druckluft- Hydraulikkreislauf nicht speist. In the thick matter-promoting operating state, the control device determines the compressed air demand as increased as soon as the actual pressure falls below a first threshold. Otherwise, the compressed air requirement is determined as not increased. The first threshold value may be a predetermined or specifiable pressure of the compressed air stored in the compressed-air storage, for example 10 bar. If the control device determines the compressed air requirement as increased, the control device controls the auxiliary hydraulic system in such a way that the auxiliary hydraulic pump feeds the compressed air hydraulic circuit in addition to the main hydraulic pump. If the control device determines that the compressed air requirement is not increased, the control device controls the auxiliary hydraulic system in such a way that the auxiliary hydraulic pump does not supply the compressed air hydraulic circuit.
Im Dickstoff nicht fördernden Betriebszustand ermittelt die Steuereinrichtung den Druckluftbedarf als erhöht, sobald der Ist-Druck einen zweiten Schwellenwert überschreitet. Der zweite Schwellenwert kann ein vorgegebener oder vorgebbarer Druck der im Druckluftspeicher gespeicherten Druckluft sein, beispielsweise 3 bar. Die Erfindung wird nachfolgend detailliert unter Bezugnahme auf die Zeichnungen beschrieben. Hierbei zeigen: Fig. 1 eine erste Ausführungsform einer Vorrichtung zur Mischung und Förderung von Dickstoffen, und In the thick matter not promoting operating state, the controller determines the compressed air demand as increased as soon as the actual pressure exceeds a second threshold. The second threshold value may be a predetermined or specifiable pressure of the compressed air stored in the compressed-air storage, for example 3 bar. The invention will be described in detail below with reference to the drawings. Hereby show: Fig. 1 shows a first embodiment of a device for mixing and conveying of thick materials, and
Fig. 2 eine weitere Ausführungsform einer Vorrichtung zur Mischung und Förderung von Fig. 2 shows another embodiment of a device for mixing and conveying of
Dickstoffen. Fig. 1 zeigt eine Vorrichtung 1000 zur Mischung und Förderung von Dickstoffen, hier Estrich.  Thick fabrics. Fig. 1 shows an apparatus 1000 for mixing and conveying of thick matter, here screed.
Die Vorrichtung 1000 weist einen Haupt-Elektromotor 20 auf, der elektrisch mit einem Haupt- Netzspannungsanschluss 10 verbunden ist. Der Haupt-Netzspannungsanschluss 10 ist auf eine maximale Strombelastung von 32 Ampere ausgelegt. Der Haupt-Netzspannungsanschluss 10 weist einen elektrischen Drehstrom-Steckverbinder 160 auf, der mit einer korrespondierenden Buchse 170 eines Baustromverteilers 180 mit geeigneter Anschlussleistung verbunden ist. The device 1000 has a main electric motor 20, which is electrically connected to a main mains voltage terminal 10. The main mains voltage terminal 10 is designed for a maximum current load of 32 amperes. The main mains voltage connection 10 has a three-phase electrical plug connector 160, which is connected to a corresponding socket 170 of a building power distributor 180 with suitable connection power.
Die Vorrichtung 1000 weist eine Haupt-Hydraulikpumpe 30 auf, die mittels des Haupt- Elektromotors 20 angetrieben wird. Die Haupt-Hydraulikpumpe 30 speist einen Mischer- Hydraulikkreislauf 40 und einen Druckluft-Hydraulikkreislauf 50. The apparatus 1000 has a main hydraulic pump 30 which is driven by the main electric motor 20. The main hydraulic pump 30 feeds a mixer hydraulic circuit 40 and a compressed air hydraulic circuit 50.
Die Haupt-Hydraulikpumpe 30 ist eine elektro-proportional gesteuerte Verstellpumpe. Die Haupt-Hydraulikpumpe 30 ist dazu ausgebildet, in Abhängigkeit von einem Steuersignal S ein Verhältnis zwischen einer in den Mischer-Hydraulikkreislauf 40 eingespeisten Leistung und einer in den Druckluft-Hydraulikkreislauf 50 eingespeisten Leistung einzustellen. The main hydraulic pump 30 is an electro-proportionally controlled variable displacement pump. The main hydraulic pump 30 is configured to adjust, in response to a control signal S, a ratio between a power input to the mixer hydraulic circuit 40 and a power input to the compressed air hydraulic circuit 50.
Am Mischer-Hydraulikkreislauf 40 ist ein hydraulischer Mischerantrieb 60 angeschlossen, der gespeist aus dem Mischer-Hydraulikkreislauf 40 den Estrich durchmischt. Am Druckluft-Hydraulikkreislauf 50 ist ein hydraulischer Kompressorantrieb 70 angeschlossen, der gespeist aus dem Druckluft-Hydraulikkreislauf 50 Druckluft erzeugt, indem er aus der Umgebung Luft ansaugt und diese komprimiert. Die derart erzeugte Druckluft wird in einen Druckluftspeicher 140 gespeichert. At the mixer hydraulic circuit 40, a hydraulic mixer drive 60 is connected, fed from the mixer hydraulic circuit 40 mixes the screed. The compressed air hydraulic circuit 50, a hydraulic compressor drive 70 is connected, which fed from the compressed air hydraulic circuit 50 generates compressed air by sucking air from the environment and compresses them. The compressed air thus generated is stored in a compressed air reservoir 140.
Die Vorrichtung 1000 weist weiter eine Steuereinrichtung 120 auf, die unter anderem das Steuersignal S zum Steuern der Haupt-Hydraulikpumpe 30 erzeugt. The device 1000 further has a control device 120 which generates, inter alia, the control signal S for controlling the main hydraulic pump 30.
Innerhalb des Druckluftspeichers 140 ist ein Drucksensor 150 angeordnet, der den Ist-Druck im Druckluftspeicher 140 misst. Der Drucksensor 150 ist funktional mit der Steuereinrichtung 120 gekoppelt, so dass die Steuereinrichtung 120 Kenntnis über den Druck im Druckluftspeicher 140 hat. Within the compressed air reservoir 140, a pressure sensor 150 is arranged, which measures the actual pressure in the compressed air reservoir 140. The pressure sensor 150 is functional with the controller 120 coupled, so that the control device 120 has knowledge about the pressure in the compressed air reservoir 140.
Die Vorrichtung 1000 weist weiter ein Zusatz-Hydrauliksystem 90 auf, das einen Zusatz- Elektromotor 100 und eine Zusatz-Hydraulikpumpe 1 10 aufweist. Die Vorrichtung 1000 weist weiter einen Zusatz-Netzspannungsanschluss 80 auf. Der Zusatz- Netzspannungsanschluss 80 ist auf eine maximale Strombelastung von 16 Ampere ausgelegt. Der Zusatz-Netzspannungsanschluss 80 weist einen elektrischen Drehstrom-Steckverbinder 161 auf, der mit einer korrespondierenden Buchse 171 des Baustromverteilers 180 verbunden ist. Der Baustromverteiler ist derart ausgelegt, dass der Haupt-Netzspannungsanschluss 10 mit maximal 32 Ampere und der Zusatz-Netzspannungsanschluss 80 gleichzeitig mit maximal 16 Ampere versorgt werden kann. The device 1000 further comprises an auxiliary hydraulic system 90, which has an additional electric motor 100 and an auxiliary hydraulic pump 1 10. The device 1000 further includes an auxiliary mains voltage terminal 80. The auxiliary mains voltage terminal 80 is designed for a maximum current load of 16 amperes. The auxiliary mains voltage terminal 80 has a three-phase electrical connector 161 which is connected to a corresponding socket 171 of the Baustromverteilers 180. The building site distribution board is designed so that the main mains voltage connection 10 can be supplied with a maximum of 32 amps and the additional mains voltage connection 80 at the same time with a maximum of 16 amperes.
Der Zusatz-Elektromotor 100 wird über den Zusatz-Netzspannungsanschluss 80 mit elektrischer Energie/Leistung versorgt. Der Zusatz-Elektromotor 100 wird von der Steuereinrichtung 120 bei erhöhtem Druckluftbedarf zugeschaltet. The additional electric motor 100 is supplied with electrical energy / power via the additional mains voltage connection 80. The additional electric motor 100 is switched on by the control device 120 with increased compressed air requirement.
Der Zusatz-Elektromotor 100 treibt die Zusatz-Hydraulikpumpe 1 10 an. Die Zusatz- Hydraulikpumpe 1 10 speist bei zugeschaltetem Zusatz-Elektromotor 100 zusätzlich zur Haupt- Hydraulikpumpe 30 den Druckluft-Hydraulikkreislauf 50. In einem den Dickstoff/Estrich fördernden Betriebszustand wird Druckluft aus dem Druckluftspeicher 140 entnommen, um den Dickstoff zu fördern. Durch die Entnahme von Druckluft aus dem Druckluftspeicher 140 sinkt der Ist-Druck des Druckluftspeichers 140 ab. The additional electric motor 100 drives the auxiliary hydraulic pump 1 10. In addition to the main hydraulic pump 30, the auxiliary hydraulic pump 110 feeds the compressed air hydraulic circuit 50 in addition to the main hydraulic pump 30. In an operating state which promotes the thick material / screed, compressed air is taken from the compressed air reservoir 140 in order to convey the thick material. By removing compressed air from the compressed air reservoir 140, the actual pressure of the compressed air reservoir 140 decreases.
Die Steuereinrichtung 120 vergleicht ständig den gemessenen Ist-Druck mit einem ersten Schwellenwert, beispielsweise 10 bar. Sobald der Ist-Druck unter den ersten Schwellenwert absinkt, stellt die Steuereinrichtung 120 einen erhöhten Druckluftbedarf fest. Dann schaltet die Steuereinrichtung 120 den Zusatz-Elektromotor 100 ein, damit auch dieser den Druckluft- Hydraulikkreislauf 50 speist. In einem den Dickstoff nicht fördernden Betriebszustand wird keine Druckluft aus dem Druckluftspeicher 140 entnommen. Während eines Ladens des Druckluftspeichers 140 speist die Haupt-Hydraulikpumpe 30 den Druckluft-Hydraulikreislauf 50 und der Ist-Druck in dem Druckluftspeicher 140 nimmt zu. Sobald der Ist-Druck im Druckluftspeicher 140 einen zweiten Schwellenwert, beispielsweise 3 bar, übersteigt, stellt die Steuereinrichtung 120 einen erhöhten Druckluftbedarf fest. Dann schaltet die Steuereinrichtung 120 den Zusatz-Elektromotor 100 ein, um das Aufladen des Druckluftspeichers 140 zu beschleunigen. Sobald der Druckluftspeicher 140 aufgeladen ist, wird der Aufladevorgang beendet, indem beispielsweise die Speisung des Druckluft-Hydraulikreislaufes 50 unterbrochen wird oder sich ein oben beschriebener Dickstoff/Estrich fördernder Betriebszustand anschließt. The control device 120 constantly compares the measured actual pressure with a first threshold value, for example 10 bar. As soon as the actual pressure drops below the first threshold value, the control device 120 determines an increased compressed air requirement. Then, the control device 120 turns on the auxiliary electric motor 100 so that it also feeds the compressed air hydraulic circuit 50. In a non-promoting the thick matter operating state no compressed air is removed from the compressed air reservoir 140. During loading of the compressed air reservoir 140, the main hydraulic pump 30 feeds the compressed air hydraulic circuit 50, and the actual pressure in the compressed air reservoir 140 increases. As soon as the actual pressure in the compressed air reservoir 140 exceeds a second threshold value, for example 3 bar, the control device 120 determines an increased compressed air requirement. Then, the controller 120 turns on the auxiliary electric motor 100 to accelerate the charging of the compressed air reservoir 140. Once the compressed air reservoir 140 is charged, the charging process is terminated by, for example, the supply of the compressed air hydraulic circuit 50 is interrupted or followed by a thick material / screed promoting operating state described above.
Eine erfindungsgemäße Variante der Vorrichtung 1000' ist in Fig. 2 gezeigt, wobei für identische oder funktionell gleichwertige Elemente identische Bezugszeichen verwendet werden und insoweit auf die obigen Ausführen verwiesen sei. A variant of the device 1000 'according to the invention is shown in FIG. 2, wherein identical reference numerals are used for identical or functionally equivalent elements and to that extent reference is made to the above embodiments.
Bei der in Fig. 2 gezeigten Ausführungsform weist das Zusatz-Hydrauliksystem 90 weiter ein mittels der Steuereinrichtung 120 angesteuertes Ventil 130 auf, das ansteuerungsabhängig eine erste oder eine zweite Schaltstellung einnimmt. In seiner ersten Schaltstellung ermöglicht das Ventil 130 das zusätzliche Speisen des Druckluft-Hydraulikkreislaufs 50 mittels der Zusatz- Hydraulikpumpe 1 10. In seiner zweiten Schaltstellung verhindert das Ventil 130 das zusätzliche Speisen des Druckluft-Hydraulikkreislaufs 50 mittels der Zusatz-Hydraulikpumpe 1 10. Sobald die Steuereinrichtung 120 einen erhöhten Druckluftbedarf ermittelt, steuert die Steuereinrichtung 120 das Ventil 130 derart an, dass das Ventil 130 seine erste Schaltstellung einnimmt. Andernfalls steuert die Steuereinrichtung 120 das Ventil 130 derart an, dass das Ventil 130 seine zweite Schaltstellung einnimmt. In the embodiment shown in FIG. 2, the auxiliary hydraulic system 90 further has a valve 130 controlled by means of the control device 120, which assumes a first or a second switching position in a control-dependent manner. In its first switching position, the valve 130 allows additional feeding of the compressed air hydraulic circuit 50 by means of the auxiliary hydraulic pump 1 10. In its second switching position, the valve 130 prevents the additional feeding of the compressed air hydraulic circuit 50 by means of the auxiliary hydraulic pump 1 10. Once the Control device 120 determines an increased compressed air requirement, the control device 120 controls the valve 130 such that the valve 130 assumes its first switching position. Otherwise, the controller 120 controls the valve 130 so that the valve 130 assumes its second switching position.
In dieser Ausführungsform kann der Zusatz-Elektromotor 100 dauerhaft aktiv sein. In der zweiten Schaltstellung des Ventils 130 läuft der Zusatz-Elektromotor 100 im Leerlauf. Nur in der zweiten Schaltstellung des Ventils 130 erfolgt ein Leistungseintrag in den Druckluft- Hydraulikkreislauf 50. In this embodiment, the auxiliary electric motor 100 may be permanently active. In the second switching position of the valve 130, the auxiliary electric motor 100 is idling. Only in the second switching position of the valve 130 is a power input in the compressed air hydraulic circuit 50.
Die erfindungsgemäße Vorrichtung 1000, 1000' zur Mischung und Förderung von Dickstoffen ermöglicht eine optimale Nutzung der mittels des Baustromverteilers 180 zur Verfügung gestellten elektrischen Anschlussleistung, da beide Buchsen 170 und 171 des Baustromverteilers 180 gleichzeitig zur Versorgung der Vorrichtung 1000, 1000' mit elektrischer Energie/Leistung verwendet werden. The device 1000, 1000 'according to the invention for mixing and conveying thick materials enables optimum utilization of the electrical connection power provided by the building-site distributor 180, since both sockets 170 and 171 of the building-site distributor 180 simultaneously supply the device 1000, 1000' with electrical energy / Performance to be used.

Claims

Patentansprüche  claims
Vorrichtung (1000, 1000') zur Mischung und Förderung von Dickstoffen, aufweisend: einen Haupt-Netzspannungsanschluss (10), Device (1000, 1000 ') for mixing and conveying thick materials, comprising: a main mains voltage connection (10),
einen Haupt-Elektromotor (20), der elektrisch mit dem Haupt-Netzspannungsanschluss (10) verbunden ist, a main electric motor (20) electrically connected to the main power supply terminal (10),
eine Haupt-Hydraulikpumpe (30), wobei die Haupt-Hydraulikpumpe (30) mittels des Haupt-Elektromotors (20) angetrieben ist und einen Mischer-Hydraulikkreislauf (40) und einen Druckluft-Hydraulikkreislauf (50) speist, a main hydraulic pump (30), the main hydraulic pump (30) being driven by the main electric motor (20) and feeding a mixer hydraulic circuit (40) and a compressed air hydraulic circuit (50),
einen hydraulischen Mischerantrieb (60), der aus dem Mischer-Hydraulikreislauf (40) gespeist ist, wobei der hydraulische Mischerantrieb (60) zum Mischen des Dickstoffs vorgesehen ist, a hydraulic mixer drive (60) fed from the mixer hydraulic circuit (40), wherein the hydraulic mixer drive (60) is provided for mixing the thick material,
einen hydraulischen Kompressorantrieb (70), der aus dem Druckluft-Hydraulikreislauf (50) gespeist ist, wobei der hydraulische Kompressorantrieb (70) zur Drucklufterzeugung vorgesehen ist, a hydraulic compressor drive (70) fed from the compressed air hydraulic circuit (50), the hydraulic compressor drive (70) being provided for generating compressed air,
einen Zusatz-Netzspannungsanschluss (80), an auxiliary mains voltage connection (80),
ein Zusatz-Hydrauliksystem (90), aufweisend: an auxiliary hydraulic system (90), comprising:
einen Zusatz-Elektromotor (100), der elektrisch mit dem Zusatz- Netzspannungsanschluss (80) verbunden ist und der unabhängig von dem Haupt- Elektromotor (20) betreibbar ist, und  an auxiliary electric motor (100) electrically connected to the auxiliary power supply terminal (80) and operable independently of the main electric motor (20), and
eine Zusatz-Hydraulikpumpe (1 10), wobei die Zusatz-Hydraulikpumpe (1 10) mittels des Zusatz-Elektromotors (100) angetrieben ist, und  an auxiliary hydraulic pump (1 10), wherein the auxiliary hydraulic pump (1 10) by means of the auxiliary electric motor (100) is driven, and
eine Steuereinrichtung (120), die dazu ausgebildet ist, in Abhängigkeit von einem Druckluftbedarf das Zusatz-Hydrauliksystem (90) derart anzusteuern, dass die Zusatz- Hydraulikpumpe (1 10) den Druckluft-Hydraulikkreislauf (50) zusätzlich zu der Haupt- Hydraulikpumpe (30) speist. a control device (120) which is designed to control the auxiliary hydraulic system (90) in dependence on a compressed air requirement in such a way that the auxiliary hydraulic pump (110) supplies the compressed air hydraulic circuit (50) in addition to the main hydraulic pump (30 ) feeds.
Vorrichtung (1000, 1000') nach Anspruch 1 , dadurch gekennzeichnet, dass Device (1000, 1000 ') according to claim 1, characterized in that
die Steuereinrichtung (120) dazu ausgebildet ist, in Abhängigkeit von dem Druckluftbedarf den Zusatz-Elektromotor (100) zu aktivieren oder zu deaktivieren. the control device (120) is designed to activate or deactivate the additional electric motor (100) as a function of the compressed air requirement.
Vorrichtung (1000') nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass Device (1000 ') according to claim 1 or 2, characterized in that
das Zusatz-Hydrauliksystem (90) aufweist: the auxiliary hydraulic system (90) comprises:
ein mittels der Steuereinrichtung (120) angesteuertes Ventil (130), wobei das Ventil (130) in einer ersten Schaltstellung das zusätzliche Speisen des Druckluft- Hydraulikkreislaufs (50) mittels der Zusatz-Hydraulikpumpe (1 10) ermöglicht, und das Ventil (130) in einer zweiten Schaltstellung die Zusatz-Hydraulikpumpe (1 10) von dem Druckluft-Hydraulikkreislaufs (50) entkoppelt, wobei die Steuereinrichtung (120) dazu ausgebildet ist, in Abhängigkeit von dem Druckluftbedarf das Ventil (130) derart anzusteuern, dass das Ventil (130) seine erste Schaltstellung oder seine zweite Schaltstellung einnimmt. a valve (130) controlled by means of the control device (120), wherein the valve (130) in a first switching position enables additional feeding of the compressed air hydraulic circuit (50) by means of the auxiliary hydraulic pump (110), and the valve (130) in a second switching position the additional hydraulic pump (1 10) decoupled from the compressed air hydraulic circuit (50), wherein the control device (120) is adapted to control the valve (130) in dependence on the compressed air demand such that the valve (130) assumes its first switching position or its second switching position.
Vorrichtung (1000, 1000') nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Device (1000, 1000 ') according to one of the preceding claims, characterized in that
die Steuereinrichtung (120) dazu ausgebildet ist, den Haupt-Elektromotor (20) während eines Dickstoff-Fördervorgangs dauerhaft zu aktivieren. the control device (120) is designed to permanently activate the main electric motor (20) during a thick matter delivery process.
Vorrichtung (1000, 1000') nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Device (1000, 1000 ') according to one of the preceding claims, characterized in that
die Haupt-Hydraulikpumpe (30) dazu ausgebildet ist, in Abhängigkeit von einem Steuersignal (S) ein Verhältnis zwischen einer in den Mischer-Hydraulikkreislauf (40) eingespeisten Leistung und einer in den Druckluft-Hydraulikkreislauf (50) eingespeisten Leistung zu verändern, the main hydraulic pump (30) is adapted to change a ratio between a power fed into the mixer hydraulic circuit (40) and a power fed into the compressed air hydraulic circuit (50) in response to a control signal (S),
wobei die Steuereinrichtung (120) dazu ausgebildet ist, das Steuersignal (S) in Abhängigkeit von dem Druckluftbedarf zu erzeugen. wherein the control device (120) is designed to generate the control signal (S) as a function of the compressed air requirement.
Vorrichtung (1000, 1000') nach einem der vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass Device (1000, 1000 ') according to one of the preceding claims, characterized in that
der Haupt-Netzspannungsanschluss (10) eine Anschlussleistung aufweist, die größer ist als eine Anschlussleistung des Zusatz-Netzspannungsanschluss (80). the main mains voltage terminal (10) has a connected load greater than a connected load of the auxiliary mains voltage terminal (80).
Vorrichtung (1000, 1000') nach einem der vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass Device (1000, 1000 ') according to one of the preceding claims, characterized in that
der Haupt-Netzspannungsanschluss (10) auf 32 Ampere Strombelastung begrenzt ist und der Zusatz-Netzspannungsanschluss (80) auf 16 Ampere Strombelastung begrenzt ist. the main mains voltage connection (10) is limited to 32 ampere current load and the auxiliary mains voltage connection (80) is limited to 16 ampere current load.
Vorrichtung (1000, 1000') nach einem der vorhergehenden Ansprüchen, dadurch gekennzeichnet, dass Device (1000, 1000 ') according to one of the preceding claims, characterized in that
die Vorrichtung (1000, 1000') aufweist: the device (1000, 1000 ') comprises:
einen Druckluftspeicher (140), der die von dem hydraulischen Kompressorantrieb a compressed air reservoir (140) corresponding to that of the hydraulic compressor drive
(70) erzeugte Druckluft speichert, (70) generates compressed air,
einen mit der Steuereinrichtung (120) gekoppelten Drucksensor (150), der den Ist- Druck der Druckluft innerhalb des Druckluftspeichers (140) misst, wobei die Steuereinrichtung (120) dazu ausgebildet ist, basierend auf dem Ist-Druck den Druckluftbedarf zu ermitteln. a pressure sensor (150) coupled to the control device (120) and measuring the actual pressure of the compressed air within the compressed air reservoir (140), wherein the control device (120) is designed to determine the compressed air requirement based on the actual pressure.
Vorrichtung (1000, 1000') nach Anspruch 8, dadurch gekennzeichnet, dass Device (1000, 1000 ') according to claim 8, characterized in that
die Vorrichtung (1000, 1000') einen den Dickstoff fördernden Betriebszustand und einen den Dickstoff nicht fördernden Betriebszustand aufweist, wobei im Dickstoff fördernden Betriebszustand, sobald der Ist-Druck einen ersten Schwellenwert unterschreitet, die Steuereinrichtung (120) den Druckluftbedarf als erhöht ermittelt und das Zusatz- Hydrauliksystem (90) derart ansteuert, dass die Zusatz-Hydraulikpumpe (1 10) den Druckluft-Hydraulikkreislauf (50) zusätzlich zu der Haupt-Hydraulikpumpe (30) speist.  the device (1000, 1000 ') has an operating state which promotes the thick matter and an operating state which does not promote the thick matter, wherein the operating state conveying the thick matter, as soon as the actual pressure falls below a first threshold value, the control device (120) determines the compressed air requirement as increased and Additional hydraulic system (90) controls such that the auxiliary hydraulic pump (1 10) feeds the compressed air hydraulic circuit (50) in addition to the main hydraulic pump (30).
0. Vorrichtung (1000, 1000') nach Anspruch 8 oder 9, dadurch gekennzeichnet, dass 0. Device (1000, 1000 ') according to claim 8 or 9, characterized in that
die Vorrichtung (1000, 1000') einen den Dickstoff fördernden Betriebszustand und einen den Dickstoff nicht fördernden Betriebszustand aufweist, wobei im Dickstoff nicht fördernden Betriebszustand, sobald der Ist-Druck einen zweiten Schwellenwert überschreitet, die Steuereinrichtung (120) den Druckluftbedarf als erhöht ermittelt und das Zusatz-Hydrauliksystem (90) derart ansteuert, dass die Zusatz-Hydraulikpumpe (1 10) den Druckluft-Hydraulikkreislauf (50) zusätzlich zu der Haupt-Hydraulikpumpe (30) speist.  the device (1000, 1000 ') has an operating state promoting the thick matter and an operating state which does not promote the thick matter, wherein the operating state which does not promote the thick matter, as soon as the actual pressure exceeds a second threshold value, the control device (120) determines the compressed air requirement as increased and the auxiliary hydraulic system (90) controls such that the auxiliary hydraulic pump (1 10) feeds the compressed air hydraulic circuit (50) in addition to the main hydraulic pump (30).
EP18706426.6A 2017-02-17 2018-02-05 Device for mixing and conveying high-viscosity materials Active EP3583315B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL18706426T PL3583315T3 (en) 2017-02-17 2018-02-05 Device for mixing and conveying high-viscosity materials

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017202604.9A DE102017202604A1 (en) 2017-02-17 2017-02-17 Device for mixing and conveying thick matter
PCT/EP2018/052778 WO2018149679A1 (en) 2017-02-17 2018-02-05 Device for mixing and conveying high-viscosity materials

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EP3583315A1 true EP3583315A1 (en) 2019-12-25
EP3583315B1 EP3583315B1 (en) 2021-01-13

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EP (1) EP3583315B1 (en)
DE (1) DE102017202604A1 (en)
ES (1) ES2862273T3 (en)
PL (1) PL3583315T3 (en)
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WO (1) WO2018149679A1 (en)

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DE102020215491A1 (en) 2020-12-08 2022-06-09 Putzmeister Engineering Gmbh Power supply device and construction machine

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* Cited by examiner, † Cited by third party
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SU1315651A1 (en) * 1985-11-12 1987-06-07 Научно-исследовательский институт строительства угольных и горнорудных предприятий "Кузниишахтострой" Concrete pump hydraulic drive
DE19539610C5 (en) 1995-10-25 2008-04-17 M-Tec Mathis Technik Gmbh Automatic conveyor regulation on pneumatic pressure conveyor systems
DE29820675U1 (en) 1998-11-19 1999-02-11 m-tec mathis technik gmbh, 79395 Neuenburg Mixing pump
JP5306974B2 (en) * 2009-12-02 2013-10-02 日立オートモティブシステムズ株式会社 Electric oil pump
DE202011103753U1 (en) 2011-07-26 2012-03-15 Ralf Hannibal Apparatus for conveying pulpy building material, by two independent drives, which hydraulically drives a compressed air conveyor.
JP5884481B2 (en) * 2011-12-28 2016-03-15 株式会社ジェイテクト Motor control device and electric pump unit
DE102014209159A1 (en) * 2014-05-14 2015-11-19 Wiwa Wilhelm Wagner Gmbh & Co Kg Method for controlling a pump system and pump system

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DE102017202604A1 (en) 2018-08-23
ES2862273T3 (en) 2021-10-07
RU2019127244A (en) 2021-03-17
WO2018149679A1 (en) 2018-08-23
EP3583315B1 (en) 2021-01-13
RU2019127244A3 (en) 2021-05-24
RU2752217C2 (en) 2021-07-23
PL3583315T3 (en) 2021-07-05

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