EP4011583A1 - Device for loading concrete transit mixers - Google Patents

Device for loading concrete transit mixers Download PDF

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Publication number
EP4011583A1
EP4011583A1 EP21213688.1A EP21213688A EP4011583A1 EP 4011583 A1 EP4011583 A1 EP 4011583A1 EP 21213688 A EP21213688 A EP 21213688A EP 4011583 A1 EP4011583 A1 EP 4011583A1
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EP
European Patent Office
Prior art keywords
drip
cleaning
concrete
loading
hopper
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
EP21213688.1A
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German (de)
French (fr)
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EP4011583B1 (en
Inventor
Klaus Härle
Reinhold Kletsch
Rainer Berner
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Liebherr Mischtecknik GmbH
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Liebherr Mischtecknik GmbH
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Publication of EP4011583A1 publication Critical patent/EP4011583A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/16—Discharge means, e.g. with intermediate storage of fresh concrete
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/42—Apparatus specially adapted for being mounted on vehicles with provision for mixing during transport
    • B28C5/4203—Details; Accessories
    • B28C5/4234—Charge or discharge systems therefor
    • B28C5/4237—Charging, e.g. hoppers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/04—Supplying or proportioning the ingredients
    • B28C7/12—Supplying or proportioning liquid ingredients

Definitions

  • the invention relates to a device for loading concrete mixers and cleaning the inlet hopper.
  • Concrete mixers also known as truck mixers, are transport vehicles with a rotating mixing drum that are used to transport fresh concrete to a construction site.
  • the filling of the concrete mixer takes place at a mixing plant, with the concrete being filled via the so-called collection hopper of the mixing plant into the so-called inlet hopper of the concrete mixer.
  • the truck mixer is driven to a predetermined loading point of the mixing plant in order to position the inlet hopper under the collection hopper.
  • the inlet funnel must be cleaned with water immediately after loading in order to prevent the concrete that has accumulated on it during loading from hardening. In the simplest case, this was previously done by the driver of the concrete mixer manually rinsing and cleaning the inlet hopper with water after loading. However, this is complicated and time-consuming. In addition, when cleaning the filling funnel, an undefined addition of water to the concrete in the drum occurs and manual cleaning involves a not inconsiderable risk of accidents for the driver. Another solution was to use a special cleaning station Provide spray nozzles in the mixing plant or next to the mixing plant to which the concrete mixer should be driven after loading has taken place. If possible, the cleaning station should be positioned in such a way that while the concrete mixer is being cleaned, another concrete mixer can be filled at the designated parking space. In this case too, however, a separate step is required for cleaning, and the installation of the additional cleaning station is space-consuming and costly.
  • the object of the invention is to provide a solution with which the cleaning of the inlet hoppers of concrete mixers after they have been loaded can be made more efficient.
  • the invention relates to a device for loading concrete mixers with fresh concrete, the device having a collecting hopper for discharging concrete into an inlet hopper of a concrete mixer, the device having a drip protection device with a drip catcher in order to catch concrete running out of the collecting hopper after loading is complete , and wherein the device has a cleaning system for flushing the inlet funnel with water, which is arranged on the anti-drip device and comprises one or more spray nozzles.
  • the anti-drip device can then be moved from a closed cleaning position to an open loading position. After the concrete has been loaded, the anti-drip device and the cleaning system can be moved back to the closed cleaning position and the cleaning of the inlet hopper can be started. Finally, the filled concrete mixer is driven forward from the parking space.
  • the overall result is a drive-through concept, which saves a great deal of time, particularly when several concrete mixers are filled in cycles.
  • the spray nozzles of the cleaning system are arranged on the underside of the drip catcher.
  • the drip protection device preferably has a mechanism with which the drip protection device and cleaning system can be moved between a closed cleaning position, in which the drip catcher covers the outlet of the collection funnel, and an open loading position, in which the outlet of the collection funnel is uncovered.
  • a design of the mechanism is preferred such that the drip catcher is moved between the cleaning position and the loading position as part of a pivoting movement.
  • the pivoting movement can be realized by a suitable mechanism.
  • the drip catcher and the collecting funnel are preferably designed in such a way that the outlet of the collecting funnel is sealed in the closed cleaning position of the drip catcher.
  • the collection funnel can have a flexible rubber tube.
  • the drip catcher can have rollers which are arranged in such a way that the rubber tube is squeezed when the drip catcher is moved in, in order to close the outlet, or is pushed to the side.
  • the drip catcher is moved backwards away from the outlet of the collecting hopper during the transition from the cleaning position to the loading position with respect to the intended parking position of the concrete mixer.
  • the rubber tube is preferably also cut at an angle in the starting area, so that there is no dripping from a protruding rubber strip.
  • the device also comprises an adjustment unit for moving the anti-drip device and the cleaning system and a control unit with a signal connection to the adjustment unit, wherein the control unit is designed to move the anti-drip device from the cleaning position to the loading position for loading the concrete mixer and, after the loading of the Move back the concrete mixer from the loading position to the cleaning position.
  • the adjustment unit preferably includes a motor such as an electric motor.
  • the movement can be activated with the aid of an assistance system for detecting the correct positioning of the concrete mixer or a safety system for monitoring the working space around the concrete mixer and in response to a start command from a driver.
  • the cleaning system preferably comprises two or more than two spray nozzles to flush the inlet funnel with water.
  • the spray nozzles can be symmetrical with respect to a longitudinal axis of the device, which corresponds to the longitudinal axis of the concrete mixer in the intended loading position.
  • the nozzles can be individually fixed or adjustable, i.e. pivotable.
  • a pipe system of the cleaning system preferably supplies the spray nozzles with water.
  • the device preferably includes a control unit which is designed to take into account the amount of cleaning water in the upstream concrete production.
  • the cleaning system does not include water pumps and/or is designed to carry out the cleaning with static water pressure. Due to the arrangement of the cleaning system directly above the inlet funnel and the cleaning that takes place immediately after filling, the water pressure provided from the public water network, which can be between 4-10 bar, for example, is sufficient.
  • the device includes visual and/or acoustic assistance systems for the correct positioning of the concrete mixer at the loading position.
  • visual and/or acoustic assistance systems for the correct positioning of the concrete mixer at the loading position.
  • Examples include position sensors or camera systems for object detection, each possibly coupled with traffic lights.
  • a visual or acoustic assistance system can signal the end of the cleaning process so that the driver knows when to drive off.
  • the loading area of a device 100 according to the invention with a concrete mixer 200 parked at the loading point can be seen in the figures.
  • the device 100 includes a collecting hopper 110 in the form of a vertically running and flexible rubber tube, the outlet of which ends directly above the inlet hopper 210 of the concrete mixer 200 .
  • the device also includes a drip protection device 120, which has a drip catcher 121 in the form of a plate covering the outlet of the collecting funnel 110 and a mechanism 122 for pivoting the drip catcher 121 between an in figure 1 shown open loading position, in which the output of the collecting hopper 110 is released, and an in Figures 2 to 4 shown closed cleaning position, in which the outlet of the collection hopper 110 is closed.
  • a drip protection device 120 which has a drip catcher 121 in the form of a plate covering the outlet of the collecting funnel 110 and a mechanism 122 for pivoting the drip catcher 121 between an in figure 1 shown open loading position, in which the output of the collecting hopper 110 is released, and an in Figures 2 to 4 shown closed cleaning position, in which the outlet of the collection hopper 110 is closed.
  • rollers 123 On the top of the drip catcher 121 there are rollers 123 which, when pivoted into the cleaning position, squeeze the rubber tube of the collecting funnel 110 so severely that in this position no material can flow out of the collecting funnel 110 .
  • a cleaning system 130 with a plurality of spray nozzles 131 for rinsing the inlet funnel 210 of the concrete mixer 200 is arranged on the anti-drip device 120 .
  • the spray nozzles 131 are located on the underside of the drip catcher 121 and are distributed there in such a way that all areas of the inlet funnel 210 can be rinsed well with water.
  • the spray nozzles 131 are arranged symmetrically with respect to the central axis of the concrete mixer 200 when it is correctly parked.
  • a pipe system 132 supplies the spray nozzles 131 with water, with the water pressure provided from the public water network (e.g. 4-10 bar) due to the described positioning of the spray nozzles 131 and also due to the arrangement of the spray nozzles directly above the inlet funnel 210 and immediately after filling flushing that takes place is sufficient and the cleaning system 130 has no pump.
  • the loading and cleaning of the concrete mixer 200 using the device shown takes place in an exemplary sequence such that the concrete mixer 200 is first driven forwards to the loading point of the device or mixing plant, which is shown in the figures and in which the inlet hopper 210 is located directly below the collection funnel 110 is located. As a result, the drip catcher 121 then pivots away under the collecting funnel 110 and releases the outlet opening of the collecting funnel 110 . It is controlled from the control room or from the Driver. It must be ensured that nobody is on the cleaning platform of the concrete mixer.
  • the concrete is fed from the collection hopper 110 of the device or mixing plant via the inlet hopper 210 of the truck mixer 200 into the mixing drum.
  • the drip catcher 121 swings under the collecting hopper 110 and closes the outlet opening of the collecting hopper 110.
  • the rubber tube of the collecting hopper 110 is pushed to the side by means of the rollers 123 mounted on the drip catcher 121 and so on severely squashed so that material can no longer flow out.
  • the drip catcher 121 is activated by actively releasing the cleaning process on the controller in the control room or on-site operation in the plant area.
  • the inlet funnel 210 is cleaned using the spray nozzles 131 of the cleaning system 130. The amount of water required for cleaning is taken into account by the control system during concrete production. After the cleaning process is complete, the traffic light system switches to green and allows the concrete mixer 200 to continue driving.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung (100) zur Beladung von Betonmischern (200) mit Frischbeton, wobei die Vorrichtung (100) einen Sammeltrichter (110) zur Betonabgabe in einen Einlauftrichter (210) eines Betonmischers (200) und ferner eine Tropfschutzvorrichtung (120) mit einem Tropffänger (121) aufweist, um nach Beendigung der Beladung aus dem Sammeltrichter (110) nachlaufenden Beton aufzufangen, und wobei die Vorrichtung (100) ein Reinigungssystem (130) zum Spülen des Einlauftrichters (210) mit Wasser aufweist, das an der Tropfschutzvorrichtung (120) angeordnet ist und eine oder mehrere Sprühdüsen (131) umfasst.The invention relates to a device (100) for loading concrete mixers (200) with fresh concrete, the device (100) having a collection hopper (110) for dispensing concrete into an inlet hopper (210) of a concrete mixer (200) and also a drip protection device (120). a drip catcher (121) in order to catch concrete that flows out of the collecting hopper (110) after the loading has ended, and wherein the device (100) has a cleaning system (130) for rinsing the inlet hopper (210) with water, which is attached to the drip protection device ( 120) and comprises one or more spray nozzles (131).

Description

Die Erfindung betrifft eine Vorrichtung zur Beladung von Betonmischern und Reinigung des Einlauftrichters.The invention relates to a device for loading concrete mixers and cleaning the inlet hopper.

Betonmischer, auch Fahrmischer genannt, sind Transportfahrzeuge mit einer drehbaren Mischtrommel, die zum Transport von Frischbeton zu einer Baustelle eingesetzt werden. Die Befüllung der Betonmischer erfolgt an einer Mischanlage, wobei der Beton über den sogenannten Sammeltrichter der Mischanlage in den sogenannten Einlauftrichter des Betonmischers gefüllt wird. Der Fahrmischer wird dabei an einen vorbestimmten Beladepunkt der Mischanlage gefahren, um den Einlauftrichter unter dem Sammeltrichter zu positionieren.Concrete mixers, also known as truck mixers, are transport vehicles with a rotating mixing drum that are used to transport fresh concrete to a construction site. The filling of the concrete mixer takes place at a mixing plant, with the concrete being filled via the so-called collection hopper of the mixing plant into the so-called inlet hopper of the concrete mixer. The truck mixer is driven to a predetermined loading point of the mixing plant in order to position the inlet hopper under the collection hopper.

Der Einlauftrichter muss unmittelbar nach der Beladung mit Wasser gereinigt werden, um ein Aushärten des im Rahmen der Beladung daran angelagerten Betons zu verhindern. Im einfachsten Fall erfolgte dies bisher dadurch, dass der Fahrer des Betonmischers den Einlauftrichter nach der Beladung manuell mit Wasser spülte und reinigte. Dies ist aber kompliziert und zeitaufwändig. Zudem kommt es bei der Reinigung des Einfülltrichters zu einer undefinierten Wasserzugabe zum Beton in der Trommel und die manuelle Reinigung birgt ein nicht unerhebliches Unfallrisiko für den Fahrer. Eine andere Lösung bestand darin, eine spezielle Reinigungsstation mit Sprühdüsen in der Mischanlage oder neben der Mischanlage vorzusehen, an den der Betonmischer nach der erfolgten Beladung gefahren werden sollte. Die Reinigungsstation soll nach Möglichkeit so positioniert sein, dass während der Reinigung des Betonmischers bereits ein weiterer Betonmischer am dafür vorgesehenen Stellplatz befüllt werden kann. Auch in diesem Fall ist aber ein gesonderter Schritt für die Reinigung erforderlich und die Installation der zusätzlichen Reinigungsstation ist platz- und kostenintensiv.The inlet funnel must be cleaned with water immediately after loading in order to prevent the concrete that has accumulated on it during loading from hardening. In the simplest case, this was previously done by the driver of the concrete mixer manually rinsing and cleaning the inlet hopper with water after loading. However, this is complicated and time-consuming. In addition, when cleaning the filling funnel, an undefined addition of water to the concrete in the drum occurs and manual cleaning involves a not inconsiderable risk of accidents for the driver. Another solution was to use a special cleaning station Provide spray nozzles in the mixing plant or next to the mixing plant to which the concrete mixer should be driven after loading has taken place. If possible, the cleaning station should be positioned in such a way that while the concrete mixer is being cleaned, another concrete mixer can be filled at the designated parking space. In this case too, however, a separate step is required for cleaning, and the installation of the additional cleaning station is space-consuming and costly.

Aufgabe der Erfindung ist es, eine Lösung bereitzustellen, mit welcher die Reinigung der Einlauftrichter von Betonmischern nach deren Beladung effizienter gestaltet werden kann.The object of the invention is to provide a solution with which the cleaning of the inlet hoppers of concrete mixers after they have been loaded can be made more efficient.

Vor diesem Hintergrund betrifft die Erfindung eine Vorrichtung zur Beladung von Betonmischern mit Frischbeton, wobei die Vorrichtung einen Sammeltrichter zur Betonabgabe in einen Einlauftrichter eines Betonmischers aufweist, wobei die Vorrichtung eine Tropfschutzvorrichtung mit einem Tropffänger aufweist, um nach Beendigung der Beladung aus dem Sammeltrichter nachlaufenden Beton aufzufangen, und wobei die Vorrichtung ein Reinigungssystem zum Spülen des Einlauftrichters mit Wasser aufweist, das an der Tropfschutzvorrichtung angeordnet ist und eine oder mehrere Sprühdüsen umfasst.Against this background, the invention relates to a device for loading concrete mixers with fresh concrete, the device having a collecting hopper for discharging concrete into an inlet hopper of a concrete mixer, the device having a drip protection device with a drip catcher in order to catch concrete running out of the collecting hopper after loading is complete , and wherein the device has a cleaning system for flushing the inlet funnel with water, which is arranged on the anti-drip device and comprises one or more spray nozzles.

So wird ermöglicht, dass der Betonmischer bei eingeschwenktem Tropffänger vorwärts an den Stellplatz gefahren werden kann. Daraufhin kann die Tropfschutzvorrichtung aus einer geschlossenen Reinigungsposition in eine offene Beladeposition bewegt werden. Nach erfolgter Beladung mit Beton können die Tropfschutzvorrichtung und das Reinigungssystem wieder in die geschlossene Reinigungsposition bewegt und die Reinigung des Einlauftrichters gestartet werden. Abschließend wird der befüllte Betonmischer vorwärts von dem Stellplatz gefahren. Es ergibt sich insgesamt ein Drive-Through-Konzept, welches insbesondere bei einer getakteten Befüllung mehrerer Betonmischer zu einer großen Zeitersparnis führt.This enables the concrete mixer to be driven forward to the parking space with the drip catcher swiveled in. The anti-drip device can then be moved from a closed cleaning position to an open loading position. After the concrete has been loaded, the anti-drip device and the cleaning system can be moved back to the closed cleaning position and the cleaning of the inlet hopper can be started. Finally, the filled concrete mixer is driven forward from the parking space. The overall result is a drive-through concept, which saves a great deal of time, particularly when several concrete mixers are filled in cycles.

Besonders bevorzugt ist, dass die Sprühdüsen des Reinigungssystems an der Unterseite des Tropffängers angeordnet sind.It is particularly preferred that the spray nozzles of the cleaning system are arranged on the underside of the drip catcher.

Die Tropfschutzvorrichtung weist vorzugsweise eine Mechanik auf, mit der Tropfschutzvorrichtung und Reinigungssystem zwischen einer geschlossenen Reinigungsposition, in welcher der Tropffänger den Ausgang des Sammeltrichters verdeckt, und einer offenen Beladeposition, in welcher der Ausgang des Sammeltrichters freigegeben ist, bewegt werden können.The drip protection device preferably has a mechanism with which the drip protection device and cleaning system can be moved between a closed cleaning position, in which the drip catcher covers the outlet of the collection funnel, and an open loading position, in which the outlet of the collection funnel is uncovered.

Bevorzugt ist eine Ausbildung der Mechanik derart, dass der Tropffänger im Rahmen einer Schwenkbewegung zwischen der Reinigungsposition und der Beladeposition bewegt wird. Die Schwenkbewegung kann durch eine geeignete Mechanik realisiert werden.A design of the mechanism is preferred such that the drip catcher is moved between the cleaning position and the loading position as part of a pivoting movement. The pivoting movement can be realized by a suitable mechanism.

Der Tropffänger und der Sammeltrichter sind vorzugsweise so ausgebildet, dass der Ausgang des Sammeltrichters in der geschlossenen Reinigungsposition des Tropffängers dichtend verschlossen wird. Beispielsweise kann der Sammeltrichter ein flexibles Gummirohr aufweisen. Der Tropffänger kann Laufrollen aufweisen, die so angeordnet sind, dass das Gummirohr beim Einbewegen des Tropffängers gequetscht wird, um den Ausgang zu verschließen, bzw. zur Seite geschoben wird.The drip catcher and the collecting funnel are preferably designed in such a way that the outlet of the collecting funnel is sealed in the closed cleaning position of the drip catcher. For example, the collection funnel can have a flexible rubber tube. The drip catcher can have rollers which are arranged in such a way that the rubber tube is squeezed when the drip catcher is moved in, in order to close the outlet, or is pushed to the side.

Bevorzugt ist weiterhin, dass der Tropffänger beim Übergang von der Reinigungsposition in die Beladeposition mit Bezug auf die vorgesehene Parkposition des Betonmischers nach hinten vom Ausgang des Sammeltrichters wegbewegt wird. Der Vorteil dieser Bewegungsrichtung liegt insbesondere im Falle eines Gummirohres am Sammeltrichter darin, dass ein Verstopfen besser vermieden werden kann.It is also preferred that the drip catcher is moved backwards away from the outlet of the collecting hopper during the transition from the cleaning position to the loading position with respect to the intended parking position of the concrete mixer. The advantage of this direction of movement, particularly in the case of a rubber tube on the collection funnel, is that clogging can be better avoided.

Vorzugsweise ist das Gummirohr im Ausgangsbereich auch schräg anschnitten, damit es zu keinem Abtropfen von einem überstehenden Gummistreifen kommt.The rubber tube is preferably also cut at an angle in the starting area, so that there is no dripping from a protruding rubber strip.

Weiter vorzugsweise umfasst die Vorrichtung ferner eine Verstelleinheit zur Bewegung der Tropfschutzvorrichtung und des Reinigungssystems sowie eine mit der Verstelleinheit in Signalverbindung stehende Steuereinheit, wobei die Steuereinheit ausgebildet ist, die Tropfschutzvorrichtung zur Beladung des Betonmischers aus der Reinigungsposition in die Beladeposition zu bewegen und nach erfolgter Beladung des Betonmischers von der Beladeposition in die Reinigungsposition zurückzubewegen. Die Verstelleinheit umfasst vorzugsweise einen Motor wie beispielsweise einen Elektromotor.More preferably, the device also comprises an adjustment unit for moving the anti-drip device and the cleaning system and a control unit with a signal connection to the adjustment unit, wherein the control unit is designed to move the anti-drip device from the cleaning position to the loading position for loading the concrete mixer and, after the loading of the Move back the concrete mixer from the loading position to the cleaning position. The adjustment unit preferably includes a motor such as an electric motor.

Vorzugsweise ist vorgesehen, dass die Bewegung der Tropfschutzvorrichtung und des Reinigungssystems teilautomatisch initiiert wird. Die Bewegung kann unter Zuhilfenahme eines Assistenzsystems zur Detektion der korrekten Positionierung des Betonmischers bzw. eines Sicherheitssystems zur Überwachung des Arbeitsraums um den Betonmischer und in Reaktion auf einen Startbefehl eines Fahrers aktiviert werden.Provision is preferably made for the movement of the anti-drip device and the cleaning system to be initiated semi-automatically. The movement can be activated with the aid of an assistance system for detecting the correct positioning of the concrete mixer or a safety system for monitoring the working space around the concrete mixer and in response to a start command from a driver.

Das Reinigungssystem umfasst vorzugsweise zwei oder mehr als zwei Sprühdüsen, um den Einlauftrichter mit Wasser zu spülen. Die Sprühdüsen können mit Blick auf eine Längsachse der Vorrichtung, die der Längsachse des Betonmischers in der beabsichtigten Beladeposition entspricht, symmetrisch sein. Die Düsen können individuell feststehend oder einstellbar, also verschwenkbar sein. Vorzugsweise versorgt ein Rohrleitungssystem des Reinigungssystems die Sprühdüsen mit Wasser. Vorzugsweise umfasst die Vorrichtung eine Steuereinheit, die ausgebildet ist, die Menge des Reinigungswassers bei der vorgelagerten Betonproduktion zu berücksichtigen.The cleaning system preferably comprises two or more than two spray nozzles to flush the inlet funnel with water. The spray nozzles can be symmetrical with respect to a longitudinal axis of the device, which corresponds to the longitudinal axis of the concrete mixer in the intended loading position. The nozzles can be individually fixed or adjustable, i.e. pivotable. A pipe system of the cleaning system preferably supplies the spray nozzles with water. The device preferably includes a control unit which is designed to take into account the amount of cleaning water in the upstream concrete production.

In einer Ausführungsform umfasst das Reinigungssystem keine Wasserpumpen und/oder ist ausgebildet, die Reinigung mit statischem Wasserdruck durchzuführen. Durch die Anordnung des Reinigungssystems unmittelbar über dem Einlauftrichter und die unmittelbar nach der Befüllung erfolgende Reinigung ist der bereitgestellte Wasserruck aus dem öffentlichen Wassernetz, der beispielsweise zwischen 4-10 bar liegen kann, ausreichend.In one embodiment, the cleaning system does not include water pumps and/or is designed to carry out the cleaning with static water pressure. Due to the arrangement of the cleaning system directly above the inlet funnel and the cleaning that takes place immediately after filling, the water pressure provided from the public water network, which can be between 4-10 bar, for example, is sufficient.

In einer Ausführungsform ist vorgesehen, dass die Vorrichtung visuelle und/oder akustische Assistenzsysteme zur richtigen Positionierung des Betonmischers an der Beladeposition umfasst. Beispiele umfassen mit Positionssensoren oder Kamerasysteme zur Objekterfassung, jeweils gegebenenfalls mit gekoppelte Ampeln. Beispielsweise kann ein visuelles oder akustisches Assistenzsystem die Beendigung des Reinigungsvorgangs signalisieren, damit der Fahrer weiß, wann er losfahren kann.In one embodiment it is provided that the device includes visual and/or acoustic assistance systems for the correct positioning of the concrete mixer at the loading position. Examples include position sensors or camera systems for object detection, each possibly coupled with traffic lights. For example, a visual or acoustic assistance system can signal the end of the cleaning process so that the driver knows when to drive off.

Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus dem in den Figuren dargestellten Ausführungsbeispiel. In den Figuren zeigen:

Figur 1:
eine Seitenansicht des Beladebereichs einer erfindungsgemäßen Vorrichtung, bei der sich die Tropfschutzvorrichtung und das Reinigungssystem in offener Beladeposition befinden;
Figur 2:
dieselbe Ansicht mit Tropfschutzvorrichtung und Reinigungssystem in geschlossener Reinigungsposition;
Figur 3:
eine Ansicht des Beladebereichs von hinten, mit Tropfschutzvorrichtung und Reinigungssystem in geschlossener Reinigungsposition; und
Figur 4:
eine Ansicht des Ausgangs des Reinigungssystems von oben, unter Ausblendung der Tropfschutzvorrichtung und des Sammeltrichters und in geschlossener Reinigungsposition.
Further details and advantages of the invention result from the embodiment shown in the figures. In the figures show:
Figure 1:
a side view of the loading area of a device according to the invention, in which the drip protection device and the cleaning system are in the open loading position;
Figure 2:
the same view with anti-drip device and cleaning system in closed cleaning position;
Figure 3:
a view of the loading area from behind, with anti-drip device and cleaning system in the closed cleaning position; and
Figure 4:
a view of the exit of the cleaning system from above, with the anti-drip device and collection hopper hidden and in the closed cleaning position.

In den Figuren ist der Beladebereichs einer erfindungsgemäßen Vorrichtung 100 mit einem am Beladepunkt abgestellten Betonmischer 200 erkennbar. Die Vorrichtung 100 umfasst einen Sammeltrichter 110 in Form eines vertikal verlaufenden und flexiblen Gummirohres, dessen Ausgang direkt oberhalb des Einlauftrichters 210 des Betonmischers 200 endet.The loading area of a device 100 according to the invention with a concrete mixer 200 parked at the loading point can be seen in the figures. The device 100 includes a collecting hopper 110 in the form of a vertically running and flexible rubber tube, the outlet of which ends directly above the inlet hopper 210 of the concrete mixer 200 .

Des Weiteren umfasst die Vorrichtung eine Tropfschutzvorrichtung 120, die einen Tropffänger 121 in Form einer den Ausgang des Sammeltrichters 110 überdeckenden Platte und eine Mechanik 122 zum Verschwenken des Tropffängers 121 zwischen einer in Figur 1 gezeigten offenen Beladeposition, in welcher der Ausgang des Sammeltrichters 110 freigegeben ist, und einer in Figuren 2 bis 4 gezeigten geschlossenen Reinigungsposition, in welcher der Ausgang des Sammeltrichters 110 geschlossen ist. An der Oberseite des Tropffängers 121 sind Laufrollen 123 angeordnet, die bei einem Verschwenken in die Reinigungsposition das Gummirohr des Sammeltrichters 110 so stark quetschen, dass in dieser Position kein Materialauslauf aus dem Sammeltrichter 110 mehr möglich ist.The device also includes a drip protection device 120, which has a drip catcher 121 in the form of a plate covering the outlet of the collecting funnel 110 and a mechanism 122 for pivoting the drip catcher 121 between an in figure 1 shown open loading position, in which the output of the collecting hopper 110 is released, and an in Figures 2 to 4 shown closed cleaning position, in which the outlet of the collection hopper 110 is closed. On the top of the drip catcher 121 there are rollers 123 which, when pivoted into the cleaning position, squeeze the rubber tube of the collecting funnel 110 so severely that in this position no material can flow out of the collecting funnel 110 .

An der Tropfschutzvorrichtung 120 ist ein Reinigungssystem 130 mit mehreren Sprühdüsen 131 zur Spülung des Einlauftrichters 210 des Betonmischers 200 angeordnet. Die Sprühdüsen 131 befinden sich an der Unterseite des Tropffängers 121 und sind dort so verteilt, dass alle Bereiche des Einlauftrichters 210 gut mit Wasser gespült werden können. Die Sprühdüsen 131 sind im gezeigten Beispiel dabei symmetrisch bezüglich der Mittelachse des richtig abgestellten Betonmischers 200 angeordnet. Ein Rohrleitungssystem 132 versorgt die Sprühdüsen 131 mit Wasser, wobei der bereitgestellte Wasserdruck aus dem öffentlichen Wassernetz (z.B. 4-10 bar) aufgrund der beschriebenen Positionierung der Sprühdüsen 131 und auch aufgrund der Anordnung der Sprühdüsen direkt über dem Einlauftrichter 210 und der unmittelbar nach der Befüllung erfolgenden Spülung ausreichend ist und das Reinigungssystem 130 keine Pumpe aufweist.A cleaning system 130 with a plurality of spray nozzles 131 for rinsing the inlet funnel 210 of the concrete mixer 200 is arranged on the anti-drip device 120 . The spray nozzles 131 are located on the underside of the drip catcher 121 and are distributed there in such a way that all areas of the inlet funnel 210 can be rinsed well with water. In the example shown, the spray nozzles 131 are arranged symmetrically with respect to the central axis of the concrete mixer 200 when it is correctly parked. A pipe system 132 supplies the spray nozzles 131 with water, with the water pressure provided from the public water network (e.g. 4-10 bar) due to the described positioning of the spray nozzles 131 and also due to the arrangement of the spray nozzles directly above the inlet funnel 210 and immediately after filling flushing that takes place is sufficient and the cleaning system 130 has no pump.

Die Beladung und Reinigung des Betonmischers 200 unter Verwendung der gezeigten Vorrichtung erfolgt in einer beispielhaften Abfolge so, dass der Betonmischer 200 zunächst vorwärts an den Beladepunkt der Vorrichtung bzw. Mischanlage gefahren wird, der in den Figuren gezeigt ist und in dem sich der Einlauftrichter 210 direkt unterhalb des Sammeltrichters 110 befindet. In Folge eines schwenkt der Tropffänger 121 dann unter dem Sammeltrichter 110 weg und gibt die Ausgangsöffnung des Sammeltrichters 110 frei. Die Ansteuerung erfolgt vom Steuerraum aus oder vom Fahrer. Dabei muss sichergestellt sein, dass sich niemand auf der Reinigungsplattform des Betonmischers befindet. Der Beton wird aus dem Sammeltrichter 110 der Vorrichtung bzw. Mischanlage über den Einlauftrichter 210 des Fahrmischers 200 in die Mischtrommel geleitet. Wenn die Steuerung der Betonmischanlage dann "Mischer leer" meldet, schwenkt der Tropffänger 121 dann unter den Sammeltrichter 110 ein und verschließt die Ausgangsöffnung des Sammeltrichters 110. Dabei wird das Gummirohr des Sammeltrichters 110 mittels der am Tropffänger 121 gelagerten Laufrollen 123 zur Seite gedrückt und so stark gequetscht, dass kein Materialauslauf mehr möglich ist. Die Ansteuerung des Tropffängers 121 erfolgt durch die aktive Freigabe des Reinigungsvorgangs an der Steuerung im Steuerraum oder an der Vor-Ort-Bedienung im Anlagenbereich. Nach dem Einschwenkvorgang erfolgt die Reinigung des Einlauftrichters 210 anhand der Sprühdüsen 131 des Reinigungssystems 130. Die zur Reinigung erforderliche Wassermenge wird steuerungsseitig bei der Betonproduktion berücksichtigt. Nach Beendigung des Reinigungsvorgangs schaltet die Ampelanlage auf grün und gibt die Weiterfahrt für den Betonmischer 200 frei.The loading and cleaning of the concrete mixer 200 using the device shown takes place in an exemplary sequence such that the concrete mixer 200 is first driven forwards to the loading point of the device or mixing plant, which is shown in the figures and in which the inlet hopper 210 is located directly below the collection funnel 110 is located. As a result, the drip catcher 121 then pivots away under the collecting funnel 110 and releases the outlet opening of the collecting funnel 110 . It is controlled from the control room or from the Driver. It must be ensured that nobody is on the cleaning platform of the concrete mixer. The concrete is fed from the collection hopper 110 of the device or mixing plant via the inlet hopper 210 of the truck mixer 200 into the mixing drum. When the control of the concrete mixing plant reports "Mixer empty", the drip catcher 121 swings under the collecting hopper 110 and closes the outlet opening of the collecting hopper 110. The rubber tube of the collecting hopper 110 is pushed to the side by means of the rollers 123 mounted on the drip catcher 121 and so on severely squashed so that material can no longer flow out. The drip catcher 121 is activated by actively releasing the cleaning process on the controller in the control room or on-site operation in the plant area. After the pivoting process, the inlet funnel 210 is cleaned using the spray nozzles 131 of the cleaning system 130. The amount of water required for cleaning is taken into account by the control system during concrete production. After the cleaning process is complete, the traffic light system switches to green and allows the concrete mixer 200 to continue driving.

Claims (10)

Vorrichtung zur Beladung von Betonmischern mit Frischbeton, wobei die Vorrichtung einen Sammeltrichter zur Betonabgabe in einen Einlauftrichter eines Betonmischers aufweist,
dadurch gekennzeichnet,
dass die Vorrichtung ferner eine Tropfschutzvorrichtung mit einem Tropffänger aufweist, um nach Beendigung der Beladung aus dem Sammeltrichter nachlaufenden Beton aufzufangen, und wobei die Vorrichtung ein Reinigungssystem zum Spülen des Einlauftrichters mit Wasser aufweist, das an der Tropfschutzvorrichtung angeordnet ist und eine oder mehrere Sprühdüsen umfasst.Device for loading concrete mixers with fresh concrete, the device having a collection hopper for dispensing concrete into an inlet hopper of a concrete mixer,
characterized,
that the device further comprises an anti-drip device with a drip catcher in order to catch concrete that flows out of the hopper after loading is complete, and wherein the device has a cleaning system for rinsing the inlet funnel with water, which is arranged on the anti-drip device and comprises one or more spray nozzles. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Sprühdüsen des Reinigungssystems an der Unterseite des Tropffängers angeordnet sind.Device according to Claim 1, characterized in that the spray nozzles of the cleaning system are arranged on the underside of the drip catcher. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass Tropfschutzvorrichtung eine Mechanik aufweist, um Tropfschutzvorrichtung und Reinigungssystem zwischen einer geschlossenen Reinigungsposition, in welcher der Tropffänger den Ausgang des Sammeltrichters verdeckt, und einer offenen Beladeposition, in welcher der Ausgang des Sammeltrichters freigegeben ist, zu bewegen, vorzugsweise zu verschwenken.Device according to one of the preceding claims, characterized in that the drip protection device has a mechanism to move the drip protection device and cleaning system between a closed cleaning position, in which the drip catcher covers the outlet of the collection funnel, and an open loading position, in which the outlet of the collection funnel is released move, preferably pivot. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass der Tropffänger und der Sammeltrichter so ausgebildet sind, dass der Ausgang des Sammeltrichters in der geschlossenen Reinigungsposition des Tropffängers dichtend verschlossen wird.Device according to Claim 3, characterized in that the drip catcher and the collecting funnel are designed in such a way that the outlet of the collecting funnel is sealed off when the drip catcher is in the closed cleaning position. Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass der Tropffänger beim Übergang von der Reinigungsposition in die Beladeposition mit Bezug auf die vorgesehene Parkposition des Betonmischers nach hinten vom Ausgang des Sammeltrichters wegbewegt wird.Apparatus according to Claim 3 or 4, characterized in that the drip catcher is moved backwards away from the outlet of the collecting hopper during the transition from the cleaning position to the loading position in relation to the intended parking position of the concrete mixer. Vorrichtung nach einem der Ansprüche 3 bis 5, dadurch gekennzeichnet, dass die Vorrichtung eine Verstelleinheit zur Bewegung der Tropfschutzvorrichtung und des Reinigungssystems sowie eine mit der Verstelleinheit in Signalverbindung stehende Steuereinheit umfasst, wobei die Steuereinheit ausgebildet ist, die Tropfschutzvorrichtung zur Beladung des Betonmischers aus der Reinigungsposition in die Beladeposition zu bewegen und nach erfolgter Beladung des Betonmischers von der Beladeposition in die Reinigungsposition zurückzubewegen.Device according to one of Claims 3 to 5, characterized in that the device comprises an adjustment unit for moving the anti-drip device and the cleaning system and a control unit with a signal connection to the adjustment unit, the control unit being designed to move the anti-drip device for loading the concrete mixer from the cleaning position to move into the loading position and to move back from the loading position to the cleaning position after the concrete mixer has been loaded. Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, dass die Steuereinheit ausgebildet ist, die Bewegung der Tropfschutzvorrichtung und des Reinigungssystems teilautomatisch zu initiieren.Device according to Claim 6, characterized in that the control unit is designed to initiate the movement of the drip protection device and the cleaning system semi-automatically. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Reinigungssystem zwei oder mehr als zwei Sprühdüsen umfasst.Device according to one of the preceding claims, characterized in that the cleaning system comprises two or more than two spray nozzles. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung eine Steuereinheit umfasst, die ausgebildet ist, die Menge des Reinigungswassers bei der vorgelagerten Betonproduktion zu berücksichtigen.Device according to one of the preceding claims, characterized in that the device comprises a control unit which is designed to take into account the amount of cleaning water in the upstream concrete production. Vorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Vorrichtung keine Wasserpumpen umfasst und ausgebildet ist, die Reinigung mit statischem Wasserdruck durchzuführen.Device according to one of the preceding claims, characterized in that the device does not include any water pumps and is designed to carry out the cleaning with static water pressure.
EP21213688.1A 2020-12-11 2021-12-10 Device for loading mixer trucks with fresh concrete Active EP4011583B1 (en)

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DE202020107194.7U DE202020107194U1 (en) 2020-12-11 2020-12-11 Device for loading concrete mixers

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EP4241876A1 (en) * 2022-03-08 2023-09-13 Liebherr-Mischtechnik GmbH Device for loading concrete mixers

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DE19738445A1 (en) * 1997-09-03 1999-03-04 Wollenick Klaus H Doz Dr Ing H Concrete mixer
JP2004284154A (en) * 2003-03-20 2004-10-14 Ishikawajima Constr Mach Co Device for preventing backward falling of concrete hopper gate
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Publication number Priority date Publication date Assignee Title
EP4241876A1 (en) * 2022-03-08 2023-09-13 Liebherr-Mischtechnik GmbH Device for loading concrete mixers

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