EP0699511A2 - Vehicle mounted mixer for flowable media, such as concrete - Google Patents

Vehicle mounted mixer for flowable media, such as concrete Download PDF

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Publication number
EP0699511A2
EP0699511A2 EP95113597A EP95113597A EP0699511A2 EP 0699511 A2 EP0699511 A2 EP 0699511A2 EP 95113597 A EP95113597 A EP 95113597A EP 95113597 A EP95113597 A EP 95113597A EP 0699511 A2 EP0699511 A2 EP 0699511A2
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EP
European Patent Office
Prior art keywords
drum
tube
mixing drum
mixer according
vehicle
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
EP95113597A
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German (de)
French (fr)
Other versions
EP0699511A3 (en
EP0699511B1 (en
Inventor
Friedrich Schwing
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Stetter GmbH
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Stetter GmbH
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Filing date
Publication date
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Publication of EP0699511A3 publication Critical patent/EP0699511A3/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
    • 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
    • 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
    • B28C5/4231—Proportioning or supplying water
    • 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
    • B28C5/4262—Closures; Sealing mechanisms
    • 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
    • B28C5/4265—Mounting means for drums; Support frames

Definitions

  • the invention relates to a vehicle mixer for flowable media, such as concrete, with the features of the preamble of claim 1.
  • Such a vehicle mixer is known from US-A-2,303902.
  • the closure element consists of a pipe socket of the feed funnel and projects axially into the drum mouth.
  • the central tube is only provided in the rear end area of the drum and is attached to radial arms of the drum.
  • a sleeve passes through the feed hopper and is slidably mounted on the tube.
  • the short pipe attached on one side cannot support the feed hopper without vibration. Vibrations of the pipe lead to leaks in the area of the ring seal between the drum mouth and the closure element.
  • the permanently installed pipe is an obstacle for maintenance work inside the mixing drum.
  • the object of the invention is to improve the storage of the closure element of the mixing drum in order to complete the seal.
  • the assembly which includes the closure element and the tube, preferably also the feed hopper, can be removed as a whole from the drum and retracted, which simplifies maintenance work.
  • the at least two rotary bearings in the drum are preferably arranged near the drum ends, thus ensuring low-vibration support of the closure element with the feed hopper on the drum even with large static and dynamic loads. This is for one Uniform, good sealing of the closure element on the drum mouth is crucial.
  • a particularly advantageous development of the invention is to be seen in the fact that the tube is given an additional function thanks to a pressurized water connection and a number of water outlet nozzles in the interior of the drum.
  • the recipe-related mixing water quantity can be metered into the dry concrete mix very effectively.
  • the water is distributed more evenly and quickly. It is preferred that the majority of the nozzles jet obliquely and vertically upwards. Therefore, the majority of the nozzles are preferably located in the upper half of the tube.
  • Another embodiment of the invention is that removable wear sleeves are arranged on the tube in the area of its bearings in the mixing drum. In conjunction with the pressurized water feed into the pipe, this wear protection can now be easily cleaned and lubricated with leakage water from the pipe. This extends the lifespan.
  • the nozzles in the tube are preferably self-sealing and equipped with an exchangeable wear protection.
  • a mixing drum 16 On a vehicle frame 10 there is a bearing block 12 with rollers 14, on which a mixing drum 16 is rotatably mounted via a running ring 18 in the rear area of the mixing drum.
  • the mixing drum 16 has a rear drum mouth 20 which is delimited by an annular flange 22.
  • the mixing drum 16 At the opposite front end, the mixing drum 16 is closed and has a central pin, not shown, which is used for storage and for the rotary drive.
  • the mixing drum is state of the art.
  • a coaxial tube 24 is arranged in the interior of the mixing drum and is mounted so as to be relatively rotatable and axially displaceable by means of a front bearing 26 and a rear bearing 28.
  • the two bearings 26, 28 are held by means of star-shaped arms 30 on the or the peripheral spirals 32 of the mixing drum 16.
  • the bearing shells of the bearings 26, 28 have a larger inner diameter than the outer diameter of the tube 24.
  • wear sleeves 34 which are exchangeably fastened on the tube 24.
  • the pipe 24 protrudes from the drum mouth 20 and carries at its end a rigidly fastened closure element 36 which comprises an annular wall 38 with an annular seal 40 and a feed funnel 42 which is penetrated by the tube 24.
  • a U-bracket 44 is attached to the tube end and is welded to the side walls of the feed funnel 42. From the bracket 12, two support arms 41 extend upwards, on one of which a torque support 46 is fastened, which is designed in such a way that it prevents the feed hopper 42 from pivoting about the drum axis, without, however, transmitting relative movements between the drum and undercarriage to the hopper 42 . On a transversely extending yoke 48 of the bracket 44, two pressure medium cylinders 50, 52 engage, which lie in an axial plane of the drum 16 and have their counter bearing according to FIG. 4 on the support arms 41 or according to FIG.
  • a bearing yoke 54 which is relative is rotatably mounted on the rim 18 of the mixing drum 16 and is secured against rotation with the drum 16 by means of a rotation prevention device 56.
  • the bearing yoke 54 has a plurality of rollers, which are supported on the running surface of the running ring 18, and rollers lying at right angles thereto, which touch the running rim on both end faces.
  • the bearing yoke 54 thus forms an abutment for the actuating cylinders 50, 52, which thus do not exert any forces on the closure element due to deformations of the vehicle frame, which results in a perfect sealing of the drum even while the vehicle is traveling.
  • the structural unit consisting of closure element 36, feed funnel 42 and tube 24 is axially adjusted and moves from the open position shown in FIG. 1 to a closed position in which the ring seal 40 is located on the ring flange 22 Mixing drum 16 creates.
  • the annular wall 38 of the closure element 36 has a forward-facing nozzle 58, which is smaller in diameter than the ring seal 40. This connecting piece 58 engages in the interior of the drum 16 and protects the ring seal 40.
  • the tube 24 protrudes from the funnel 42 and has a pressurized water connection 62 at the projecting end, to which a pressurized water hose can be connected.
  • the tube 24 is provided along its entire length in the area of the mixing drum 16 with axially spaced outlet nozzles 64, most of the nozzles being arranged in the upper half of the tube 24 and pointing upwards. Mixing water can thus be metered into the dry concrete mixture evenly distributed over the entire length of the drum via the pipe 24.

Abstract

The drum (16) of the premixed concrete truck has bearings (26,28) near the inside ends to support a tube (24) on whose outer end is fitted the end seal and loading chute (42) to complete the drum. The tube and end seal are moved axially to open the drum for discharging the concrete. The seal is on a stepped profile (36) which slides into the open end of the drum and the pipe ducts water into the drum, via spaced slots (64) to moisten the dry concrete mix and for washing out the drum. The pipe is supported in the two mountings via bearing sleeves fitted over the pipe, and easily replaced when worn. The bearings are lubricated by part of the water flow through the pipe. The pipe and end fitting are removed in one piece for access.

Description

Die Erfindung betrifft einen Fahrzeugmischer für fließfähige Medien, wie Beton, mit den Merkmalen des Oberbegriffes von Patentanspruch 1.The invention relates to a vehicle mixer for flowable media, such as concrete, with the features of the preamble of claim 1.

Ein derartiger Fahrzeugmischer ist aus der US-A-2,303902 bekannt. Das Verschlußelement besteht aus einem Rohrstutzen des Aufgabetrichters und ragt in den Trommelmund axial hinein. Das zentrale Rohr ist nur im hinteren Endbereich der Trommel vorgesehen und an Radialarmen der Trommel befestigt. Den Aufgabetrichter durchsetzt eine Hülse, mit der der Aufgabetrichter auf dem Rohr verschiebbar gelagert ist. Das einseitig befestigte kurze Rohr kann den Aufgabetrichter nicht schwingungsfrei abstützen. Schwingungen des Rohres führen zu Undichtigkeiten im Bereich der Ringdichtung zwischen Trommelmund und Verschlußelement. Das fest eingebaute Rohr bildet für Wartungsarbeiten im Inneren der Mischtrommel ein Hindernis.Such a vehicle mixer is known from US-A-2,303902. The closure element consists of a pipe socket of the feed funnel and projects axially into the drum mouth. The central tube is only provided in the rear end area of the drum and is attached to radial arms of the drum. A sleeve passes through the feed hopper and is slidably mounted on the tube. The short pipe attached on one side cannot support the feed hopper without vibration. Vibrations of the pipe lead to leaks in the area of the ring seal between the drum mouth and the closure element. The permanently installed pipe is an obstacle for maintenance work inside the mixing drum.

Aufgabe der Erfindung ist es, die Lagerung des Verschlußelementes der Mischtrommel zu verbessern, um die Abdichtung zu vervollkommen.The object of the invention is to improve the storage of the closure element of the mixing drum in order to complete the seal.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruches 1 gelöst.This object is achieved by the features of claim 1.

Die Baueinheit, die das Verschlußelement und das Rohr, vorzugsweise auch den Aufgabetrichter umfaßt, kann als Ganzes von der Trommel abgezogen und wieder eingefahren werden, wodurch Wartungsarbeiten erleichtert werden. Die mindestens zwei Drehlager in der Trommel sind vorzugsweise nahe den Trommelenden angeordnet, gewährleisten also auch bei großen statischen und dynamischen Belastungen eine schwingungsarme Abstützung des Verschlußelements mit Aufgabetrichter an der Trommel. Dies ist für eine gleichmäßige, gute Abdichtung des Verschlußelementes am Trommelmund entscheidend.The assembly, which includes the closure element and the tube, preferably also the feed hopper, can be removed as a whole from the drum and retracted, which simplifies maintenance work. The at least two rotary bearings in the drum are preferably arranged near the drum ends, thus ensuring low-vibration support of the closure element with the feed hopper on the drum even with large static and dynamic loads. This is for one Uniform, good sealing of the closure element on the drum mouth is crucial.

Eine besonders vorteilhafte Weiterbildung der Erfindung ist darin zu sehen, daß das Rohr dank eines Druckwasseranschlusses und einer Anzahl Wasseraustrittsdüsen im Innenraum der Trommel eine zusätzliche Funktion erhält. Die rezeptbezogene Anmachwassermenge kann sehr wirksam in die trockene Betonmischung eindosiert werden. Die Verteilung des Wassers erfolgt gleichmäßiger und schneller. Dabei wird vorgezogen, daß die Mehrzahl der Düsen schräg und vertikal aufwärts abstrahlen. Deswegen ist die Mehrzahl der Düsen vorzugsweise in der oberen Hälfte des Rohres angeordnet.A particularly advantageous development of the invention is to be seen in the fact that the tube is given an additional function thanks to a pressurized water connection and a number of water outlet nozzles in the interior of the drum. The recipe-related mixing water quantity can be metered into the dry concrete mix very effectively. The water is distributed more evenly and quickly. It is preferred that the majority of the nozzles jet obliquely and vertically upwards. Therefore, the majority of the nozzles are preferably located in the upper half of the tube.

Eine weitere Ausgestaltung der Erfindung besteht darin, daß auf dem Rohr im Bereich seiner Lagerungen in der Mischtrommel abnehmbare Verschleißhülsen angeordnet sind. In Verbindung mit der Druckwassereinspeisung in das Rohr kann nun sehr einfach dieser Verschleißschutz mit Leckwasser aus dem Rohr gereinigt und geschmiert werden. Die Lebensdauer wird dadurch verlängert. Die Düsen im Rohr sind vorzugsweise selbstverschließend und mit einem auswechselbaren Verschleißschutz ausgestattet.Another embodiment of the invention is that removable wear sleeves are arranged on the tube in the area of its bearings in the mixing drum. In conjunction with the pressurized water feed into the pipe, this wear protection can now be easily cleaned and lubricated with leakage water from the pipe. This extends the lifespan. The nozzles in the tube are preferably self-sealing and equipped with an exchangeable wear protection.

Anhand der Zeichnung, die ein Ausführungsbeispiel der Erfindung darstellt, wird diese näher beschrieben.With reference to the drawing, which represents an embodiment of the invention, this will be described in more detail.

Es zeigt:

FIG. 1
eine Seitenansicht einer auf einem Fahrzeugrahmen gelagerten Mischtrommel mit verstellbarer Verschlußeinrichtung,
FIG. 2
einen Axialschnitt durch die Lagerung des zentralen Rohres innerhalb der Mischtrommel,
FIG. 3
eine Stirnansicht der Rohrlagerung in der Mischtrommel,
FIG. 4
eine Draufsicht auf den Heckbereich der Mischtrommel mit Darstellung einer Stelleinrichtung zum Verschieben des Verschlußelementes,
FIG. 5
eine Seitenansicht des Heckbereiches der Mischtrommel, mit einer abgewandelten Aufhängung der Stellzylinder für das verschiebbare Verschlußelement, und
FIG. 6
eine heckseitige Ansicht der Ausführungsform gemäß Figur 5.
It shows:
FIG. 1
a side view of a mixing drum mounted on a vehicle frame with an adjustable closure device,
FIG. 2nd
an axial section through the storage of the central tube within the mixing drum,
FIG. 3rd
an end view of the pipe storage in the mixing drum,
FIG. 4th
2 shows a plan view of the rear area of the mixing drum, showing an actuating device for displacing the closure element,
FIG. 5
a side view of the rear region of the mixing drum, with a modified suspension of the actuating cylinder for the sliding closure element, and
FIG. 6
a rear view of the embodiment of Figure 5.

Auf einem Fahrzeugrahmen 10 befindet sich ein Lagerbock 12 mit Rollen 14, auf denen eine Mischtrommel 16 über einen Laufkranz 18 im Heckbereich der Mischtrommel drehbar gelagert ist. Die Mischtrommel 16 weist einen heckseitigen Trommelmund 20 auf, der von einem Ringflansch 22 begrenzt wird. Am gegenüberliegenden vorderseitigen Ende ist die Mischtrommel 16 geschlossen und hat einen nicht dargestellten zentralen Zapfen, der zur Lagerung und zum Drehantrieb dient. Die Mischtrommel ist insoweit Stand der Technik.On a vehicle frame 10 there is a bearing block 12 with rollers 14, on which a mixing drum 16 is rotatably mounted via a running ring 18 in the rear area of the mixing drum. The mixing drum 16 has a rear drum mouth 20 which is delimited by an annular flange 22. At the opposite front end, the mixing drum 16 is closed and has a central pin, not shown, which is used for storage and for the rotary drive. In this respect, the mixing drum is state of the art.

Im Inneren der Mischtrommel ist ein koaxiales Rohr 24 angeordnet, welches mittels eines vorderen Lagers 26 und eines hinteren Lagers 28 relativ drehbar und axial verschiebbar gelagert ist. Die beiden Lager 26, 28 sind mittels sternförmiger Arme 30 an der oder den Umfangsspiralen 32 der Mischtrommel 16 gehaltert. Die Lagerschalen der Lager 26, 28 haben einen größeren Innendurchmesser, als er dem Außendurchmesser des Rohres 24 entspricht. Im Ringraum befinden sich Verschleißhülsen 34, die auswechselbar auf dem Rohr 24 befestigt sind. Das Rohr 24 ragt aus dem Trommelmund 20 heraus und trägt an seinem Ende ein starr befestigtes Verschlußelement 36, das eine Ringwand 38 mit Ringdichtung 40 sowie einen Aufgabetrichter 42 umfaßt, der vom Rohr 24 durchsetzt wird. Am Rohrende ist ein U-Bügel 44 befestigt, der an den Seitenwänden des Aufgabetrichters 42 angeschweißt ist. Vom Lagerbock 12 erstrecken sich zwei Tragarme 41 nach oben, an deren einem eine Drehmomentabstützung 46 befestigt ist, welche so ausgelegt ist, daß sie ein Verschwenken des Aufgabetrichters 42 um die Trommelachse verhindert, ohne jedoch Relativbewegungen zwischen Trommel und Fahrwerk auf den Trichter 42 zu übertragen. An einem sich quer erstreckenden Joch 48 des Bügels 44 greifen zwei Druckmittelzylinder 50, 52 an, die in einer Axialebene der Trommel 16 liegen und ihr Gegenlager gemäß Fig. 4 an den Tragarmen 41 oder gemäß Fig. 5 an einem Lagerjoch 54 haben, welches relativ drehbar auf dem Laufkranz 18 der Mischtrommel 16 gelagert und mittels einer Drehverhinderungseinrichtung 56 gegen ein Mitdrehen mit der Trommel 16 gesichert ist. Das Lagerjoch 54 weist mehrere Rollen auf, die sich auf der Lauffläche des Laufkranzes 18 abstützen, sowie dazu rechtwinklig liegende Rollen, die den Laufkranz an beiden Stirnseiten berühren. Das Lagerjoch 54 bildet somit ein Widerlager für die Stellzylinder 50, 52, die somit keine Kräfte aufgrund von Verformungen des Fahrzeugrahmens auf das Verschlußelement ausüben, woraus eine vollkommene Abdichtung der Trommel auch während der Fahrt des Fahrzeuges resultiert.A coaxial tube 24 is arranged in the interior of the mixing drum and is mounted so as to be relatively rotatable and axially displaceable by means of a front bearing 26 and a rear bearing 28. The two bearings 26, 28 are held by means of star-shaped arms 30 on the or the peripheral spirals 32 of the mixing drum 16. The bearing shells of the bearings 26, 28 have a larger inner diameter than the outer diameter of the tube 24. In the annular space there are wear sleeves 34 which are exchangeably fastened on the tube 24. The pipe 24 protrudes from the drum mouth 20 and carries at its end a rigidly fastened closure element 36 which comprises an annular wall 38 with an annular seal 40 and a feed funnel 42 which is penetrated by the tube 24. A U-bracket 44 is attached to the tube end and is welded to the side walls of the feed funnel 42. From the bracket 12, two support arms 41 extend upwards, on one of which a torque support 46 is fastened, which is designed in such a way that it prevents the feed hopper 42 from pivoting about the drum axis, without, however, transmitting relative movements between the drum and undercarriage to the hopper 42 . On a transversely extending yoke 48 of the bracket 44, two pressure medium cylinders 50, 52 engage, which lie in an axial plane of the drum 16 and have their counter bearing according to FIG. 4 on the support arms 41 or according to FIG. 5 on a bearing yoke 54, which is relative is rotatably mounted on the rim 18 of the mixing drum 16 and is secured against rotation with the drum 16 by means of a rotation prevention device 56. The bearing yoke 54 has a plurality of rollers, which are supported on the running surface of the running ring 18, and rollers lying at right angles thereto, which touch the running rim on both end faces. The bearing yoke 54 thus forms an abutment for the actuating cylinders 50, 52, which thus do not exert any forces on the closure element due to deformations of the vehicle frame, which results in a perfect sealing of the drum even while the vehicle is traveling.

Durch Betätigen der beiden vorzugsweise pneumatisch betriebenen Stellzylinder 50, 52 wird die aus Verschlußelement 36, Aufgabetrichter 42 und Rohr 24 bestehende Baueinheit axial verstellt und gelangt aus der in Fig. 1 gezeigten Offenstellung in eine Schließstellung, in welcher die Ringdichtung 40 sich am Ringflansch 22 der Mischtrommel 16 anlegt. Die Ringwand 38 des Verschlußelementes 36 hat einen nach vorn weisenden Stutzen 58, der auf kleinerem Durchmesser liegt als die Ringdichtung 40. Dieser Stutzen 58 greift in das Innere der Trommel 16 ein und schützt die Ringdichtung 40.By actuating the two preferably pneumatically operated actuating cylinders 50, 52, the structural unit consisting of closure element 36, feed funnel 42 and tube 24 is axially adjusted and moves from the open position shown in FIG. 1 to a closed position in which the ring seal 40 is located on the ring flange 22 Mixing drum 16 creates. The annular wall 38 of the closure element 36 has a forward-facing nozzle 58, which is smaller in diameter than the ring seal 40. This connecting piece 58 engages in the interior of the drum 16 and protects the ring seal 40.

Das Rohr 24 ragt aus dem Trichter 42 heraus und weist am herausragenden Ende einen Druckwasseranschluß 62 auf, an den ein Druckwasserschlauch anschließbar ist. Das Rohr 24 ist über seine ganze Länge im Bereich der Mischtrommel 16 mit axial beabstandeten Auslaßdüsen 64 versehen, wobei die meisten Düsen in der oberen Hälfte des Rohres 24 angeordnet und aufwärts gerichtet sind. Über das Rohr 24 kann somit Anmachwasser über die ganze Trommellänge gleichmäßig verteilt in die trockene Betonmischung eindosiert werden.The tube 24 protrudes from the funnel 42 and has a pressurized water connection 62 at the projecting end, to which a pressurized water hose can be connected. The tube 24 is provided along its entire length in the area of the mixing drum 16 with axially spaced outlet nozzles 64, most of the nozzles being arranged in the upper half of the tube 24 and pointing upwards. Mixing water can thus be metered into the dry concrete mixture evenly distributed over the entire length of the drum via the pipe 24.

Claims (8)

Fahrzeugmischer für fließfähige Medien, wie Beton, mit einer Mischtrommel (16), die einen heckseitigen Trommelmund (22) und an ihrem Außenumfang einen Laufkranz (18) aufweist, der von Rollen (14) eines Aufbaus (12) des Fahrzeugrahmens drehbar abgestützt ist und deren Trommelmund (22) durch ein Verschlußelement (36) mit Aufgabetrichter (42) absperrbar ist, wobei das Verschlußelement (36) mittels eines, den Trommelmund koaxial durchsetzenden und von der Mischtrommel (16) abgestützten Rohres (24) zwischen einer, den Trommelmund (22) mittels einer Ringdichtung (40) abschließenden Schließstellung und einer Offenstellung verschiebbar angeordnet, gegen Mitdrehen durch einen Drehverhinderungsschutz (46) gesichert und durch eine Stelleinrichtung (50, 52) verstellbar ist, dadurch gekennzeichnet, daß das Rohr (24) mit dem Verschlußelement (36) eine Baueinheit bildet und daR das Rohr (24) sich über wenigstens den größten Teil der Länge der Mischtrommel (16) erstreckt, die mindestens zwei koaxiale Dreh- und Schiebelager (26, 28) für das Rohr (24) aufweist.Vehicle mixer for flowable media, such as concrete, with a mixing drum (16), which has a rear drum mouth (22) and on its outer circumference a running ring (18) which is rotatably supported by rollers (14) of a structure (12) of the vehicle frame and whose drum mouth (22) can be blocked by a closure element (36) with a feed hopper (42), the closure element (36) being connected between a, the drum mouth () by means of a tube (24) which coaxially penetrates the drum mouth and is supported by the mixing drum (16). 22) by means of a ring seal (40) closing position and an open position slidably arranged, secured against rotation by a rotation prevention device (46) and adjustable by an adjusting device (50, 52), characterized in that the tube (24) with the closure element ( 36) forms a structural unit and that the tube (24) extends over at least most of the length of the mixing drum (16), the least s has two coaxial rotary and sliding bearings (26, 28) for the tube (24). Fahrzeugmischer nach Anspruch 1, dadurch gekennzeichnet, daß der Aufgabetrichter (42) Bestandteil der aus dem Verschlußelement (36) und dem Rohr (24) bestehenden Baueinheit ist.Vehicle mixer according to claim 1, characterized in that the feed hopper (42) is part of the structural unit consisting of the closure element (36) and the tube (24). Fahrzeugmischer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß auf dem Rohr (24) im Bereich seiner Lagerungen (26, 28) in der Mischtrommel (16) abnehmbare Verschleißhülsen (34) angeordnet sind.Vehicle mixer according to claim 1 or 2, characterized in that removable wear sleeves (34) are arranged on the tube (24) in the region of its bearings (26, 28) in the mixing drum (16). Fahrzeugmischer nach einem der Ansprüche 1-3, dadurch gekennzeichnet, daß die Stelleinrichtung zwei beidseitig des Aufgabetrichters (42) an der Baueinheit (24, 36) angeordnete Druckmittelzylinder (50, 52) aufweist, die an einem Lagerjoch (54) befestigt sind, das an dem Laufkranz (18) der Mischtrommel (16) relativ drehbar abgestützt ist.Vehicle mixer according to one of claims 1-3, characterized in that the adjusting device two on both sides of the feed hopper (42) on the Module (24, 36) arranged pressure medium cylinders (50, 52) which are fastened to a bearing yoke (54) which is relatively rotatably supported on the running ring (18) of the mixing drum (16). Fahrzeugmischer nach einem der Ansprüche 1-4, dadurch gekennzeichnet, daß die Ringdichtung (40) außerhalb eines, in die Trommel (16) hineinragenden Verschleißschutzstutzens (58) der Baueinheit (24, 36, 42) angeordnet ist.Vehicle mixer according to one of claims 1-4, characterized in that the ring seal (40) is arranged outside a wear protection socket (58) of the structural unit (24, 36, 42) protruding into the drum (16). Fahrzeugmischer nach einem der Ansprüche 1-6, dadurch gekennzeichnet, daß das Rohr (24) außerhalb der Mischtrommel (16) einen Druckwasseranschluß (62) und im Bereich der Trommel (16) mehrere über die Länge der Mischtrommel (16) verteilte Austrittsdüsen (64) aufweist.Vehicle mixer according to one of claims 1-6, characterized in that the tube (24) outside the mixing drum (16) has a pressurized water connection (62) and in the region of the drum (16) a plurality of outlet nozzles (64) distributed over the length of the mixing drum (16) ) having. Fahrzeugmischer nach Anspruch 6, dadurch gekennzeichnet, daß wenigstens einige der Austrittsdüsen (64) aufwärts gerichtet sind.Vehicle mixer according to claim 6, characterized in that at least some of the outlet nozzles (64) are directed upwards. Fahrzeugmischer nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die.Auslaßdüsen (64) Verschlußmittel aufweisen, die die Anlaßdüsen (64) im drucklosen Zustand des Rohres (24) selbsttätig schließen und bei Druckwasserzufuhr die Düsen (64) öffnen.Vehicle mixer according to claim 6 or 7, characterized in that the outlet nozzles (64) have closure means which automatically close the starter nozzles (64) when the pipe (24) is depressurized and open the nozzles (64) when pressurized water is supplied.
EP95113597A 1994-09-03 1995-08-30 Vehicle mounted mixer for flowable media, such as concrete Expired - Lifetime EP0699511B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4431501A DE4431501B4 (en) 1994-09-03 1994-09-03 Vehicle mixers for flowable media, such as concrete
DE4431501 1994-09-03

Publications (3)

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EP0699511A2 true EP0699511A2 (en) 1996-03-06
EP0699511A3 EP0699511A3 (en) 1996-04-17
EP0699511B1 EP0699511B1 (en) 2001-07-04

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ID=6527405

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Application Number Title Priority Date Filing Date
EP95113597A Expired - Lifetime EP0699511B1 (en) 1994-09-03 1995-08-30 Vehicle mounted mixer for flowable media, such as concrete

Country Status (4)

Country Link
US (1) US5513911A (en)
EP (1) EP0699511B1 (en)
CZ (1) CZ287408B6 (en)
DE (2) DE4431501B4 (en)

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CN101856989A (en) * 2010-05-24 2010-10-13 烟台盛利达工程技术有限公司 New rotary sealing technique and concrete mixing and transporting car with horizontally arranged mixing drum
CN107344401A (en) * 2017-08-29 2017-11-14 烟台盛利达工程技术有限公司 The concrete mixing and transporting car of quill shaft rotary sealing
CN107457900A (en) * 2017-09-18 2017-12-12 张家港沙工科技服务有限公司 A kind of sealing and anti-leakage formula mixer feeding device
WO2020248763A1 (en) * 2019-06-12 2020-12-17 烟台盛利达工程技术有限公司 Screw compression disengaging/engaging rotary sealing mechanism

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CN103223695B (en) * 2013-05-14 2015-05-27 十九冶成都建设有限公司 Secondary fluidizing agent addition system
DE102014006774A1 (en) 2014-05-08 2015-11-12 Beiqi Foton Motor Co., Ltd. Truck mixer for flowable media, especially concrete
CN104108136A (en) * 2014-06-29 2014-10-22 广西科亮路桥机械有限公司 Automatically centripetal double riding wheel mechanism of concrete mixing truck
CN109624087B (en) * 2019-01-29 2023-12-29 烟台盛利达工程技术有限公司 Integrated rotary sealing system
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CN107344401A (en) * 2017-08-29 2017-11-14 烟台盛利达工程技术有限公司 The concrete mixing and transporting car of quill shaft rotary sealing
CN107457900A (en) * 2017-09-18 2017-12-12 张家港沙工科技服务有限公司 A kind of sealing and anti-leakage formula mixer feeding device
WO2020248763A1 (en) * 2019-06-12 2020-12-17 烟台盛利达工程技术有限公司 Screw compression disengaging/engaging rotary sealing mechanism

Also Published As

Publication number Publication date
DE59509375D1 (en) 2001-08-09
EP0699511A3 (en) 1996-04-17
CZ222595A3 (en) 1996-03-13
CZ287408B6 (en) 2000-11-15
US5513911A (en) 1996-05-07
EP0699511B1 (en) 2001-07-04
DE4431501A1 (en) 1996-03-07
DE4431501B4 (en) 2004-09-16

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