EP0374682A1 - Vehicle concrete mixer - Google Patents

Vehicle concrete mixer Download PDF

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Publication number
EP0374682A1
EP0374682A1 EP89122866A EP89122866A EP0374682A1 EP 0374682 A1 EP0374682 A1 EP 0374682A1 EP 89122866 A EP89122866 A EP 89122866A EP 89122866 A EP89122866 A EP 89122866A EP 0374682 A1 EP0374682 A1 EP 0374682A1
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EP
European Patent Office
Prior art keywords
flap
mixing drum
concrete mixer
vehicle
seal
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Granted
Application number
EP89122866A
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German (de)
French (fr)
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EP0374682B1 (en
EP0374682B2 (en
Inventor
Wilfried Schreyer
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Stetter GmbH
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Stetter GmbH
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    • 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

Definitions

  • the invention relates to a vehicle concrete mixer, with a vehicle frame, a rotatably mounted mixing drum arranged at an incline thereon, at the rear end of which there is an opening delimited by an annular flange for loading and emptying the mixing drum, with a drive motor for selectively rotating the mixing drum in opposite directions, with a frame that is attached to the vehicle frame and has a swivel bearing above the mixing drum, with a flap that is pivotally mounted on the swivel bearing between an open position and a closed position and closes the opening of the mixing drum in the closed position and with a funnel , which is attached to the rear of the flap and penetrates it, further with an annular seal which is attached to the outer periphery of the flap and is pressed in the closed position on the annular flange of the mixing drum and during rotation d He slides the mixing drum on the flange and with an adjusting element for pivoting the flap.
  • DE-A-29 49 026 shows a similar concrete mixer.
  • the seal on the flap has been completely dispensed with, so that sealing the mixing drum is even more problematic.
  • the object of the invention is therefore to provide an arrangement which ensures that the rear opening of a mixing drum is sealed as completely as possible.
  • This task is performed on a vehicle concrete mixer with the Features of the type mentioned solved in that a mechanical stop for the flap is arranged on the frame, that the stop supports the flap in the closed position and that adjusting means are provided to adjust at least a peripheral part of the flap seal made of abrasion-resistant plastic if the flap is supported by the stop.
  • the advantage is achieved that the seal is relieved of the pivoting moment of the unit consisting of flap and funnel, so that the prerequisite for a uniform pressing of the seal is created.
  • the setting means allow a fine adjustment of the seal.
  • the setting means can be assigned to the stop system or also to the organ for opening the flap.
  • the pivot bearing of the flap can be adjustable, preferably via an eccentric bushing, and the distance between the pivot bearing and the attachment point on the funnel and the position of the attachment point on the funnel or on the pivot bearing can preferably be infinitely adjustable such that both an approximately horizontal adjustment the flap as well as a vertical adjustment near the swivel storage area are possible.
  • annular seal adjustable in sections in the direction of the pressing force in order to fine-tune the position of the seal to the position of the flange delimiting the opening of the drum, at least in the lower half of the opening, but preferably around the whole Circumference of the opening around.
  • An actuating cylinder is preferably designed to be double-acting, so that the flap is kept pressed by pressure on the preferably damped stop, in order to ensure that vibrations during the journey cannot have a negative influence on the seal.
  • a mixing drum 14 is rotatably mounted with an axis rising to the rear.
  • a frame 16 is attached to the vehicle frame 12, which projects upward on both sides of the mixing drum 14 and has a pivot bearing 18 for a structural unit 20 above the contour of the mixing drum, which consists of a flap 22 and a funnel 24.
  • the flap 22 has an essentially circular contour and closes an opening 26 formed at the rear end of the mixing drum 14, which opening is delimited by an annular flange 28.
  • Side walls of the funnel 24 are welded to the flap 22 and are connected to one another by a base 30.
  • the flap 22 has approximately the height of the axis of rotation 32 the mixing drum 14 has an opening through which the outlet of the funnel 24 projects into the mixing drum 14.
  • the flap 22 carries an annular flange 34 to which an annular seal 36 is fastened, which rests on the flange 28 of the mixing drum 14 in a sealing manner.
  • a support shoe 38 is fastened, which carries a damping member 40 on the bottom and with which the support shoe 38 is supported in the closed position of the flap 22 on a stop 42 which is formed by a cross strut of the frame 16.
  • the support foot 38 transfers the weight of the funnel 24 to the stop 42, so that the seal 36 is relieved.
  • An adjusting cylinder 44 is mounted on the frame 16 and its piston rod engages the bottom 30 of the funnel 24.
  • the cylinder 44 is operated with compressed air. It is double acting. If the compressed air is supplied on the piston side, the flap 22 with the funnel 24 swivels backwards and upwards into an open position in which the mixing drum 14 can be unloaded. If the cylinder 44 is acted upon on the piston rod side, the flap 22 reaches its closed position, the support foot 38 resting on the stop 42. The cylinder 44 remains pressurized during the travel of the concrete mixer 10 in order to lock the flap 22 in the closed position.
  • FIG. 3 illustrates a modified embodiment of the adjusting cylinder 44, which itself acts as a stop means here, so that the support shoe 38 and the stop 42 in the form of a cross strut according to FIG. 2 can be omitted.
  • the piston 46 of the cylinder 44 must be provided on the bottom with an attenuator 48, as shown in dashed lines in FIG. 3 is illustrated.
  • the cylinder 44 must be arranged and designed so that the damping member 48 abuts the bottom of the cylinder bore when the flap 22 has reached its closed position.
  • the fastening fork 50 of the piston rod of the cylinder 44 is provided with a screw bolt 52 which is screwed into an end-side bore in the piston rod and is countered by means of a nut 54.
  • the support foot 38 is attached to a swivel plate 56 which is pivotally mounted between two brackets about an axis 60.
  • the tabs 58 are welded to the underside of the bottom 30 of the funnel 24.
  • the two tabs 58 extend upward about the pivot axis 60 or two further tabs 62 are welded at a distance from the pivot axis 60, between which the pivot plate 56 is led.
  • the two further tabs 62 have aligned arc slots 64 and the pivot plate 56 has a corresponding hole, so that a clamping screw 66 can pass through this hole and the two arc slots 64 in order to be able to clamp the pivot plate in a suitable pivot position. With this measure, the position of the flap 22 can be continuously fine-tuned when the damping member 40 of the support foot 38 rests on the stop 42.
  • FIG. FIG. 5 illustrates an adjustment means that allows a fine adjustment of the closed position of the flap 22 in the area of the pivot bearing 18.
  • the flap 22 is extended in the width region of the funnel 24 beyond the ring flange 34 and forms the front wall of the funnel here.
  • a horizontal arm 68 extends to the pivot bearing 18, which has a bearing sleeve 70 in which an eccentric bushing 72 is rotatably and fixably mounted.
  • This eccentric bushing 72 has an eccentric bore 74 through which a bearing pin 76 extends, which is fastened to the frame 16. If the eccentric bushing 72 is now rotated, the position of the flap 22 changes both in the horizontal and in the vertical direction. The exact closed position of the flap 22 can thus be adjusted continuously.
  • FIG. 6 illustrates an alternative adjustment means of FIG Flap 22 in the region of the pivot bearing 18.
  • the arm 68 is divided here and the two arm parts are telescopically displaceable, one part having an elongated hole 78 in the direction of displacement and the other part having a bore aligned therewith.
  • the desired displacement position can be determined by means of a clamping screw 80.
  • the funnel-side part of the arm 68 is also screwed adjustably to the front wall of the funnel 24, the clamping screw penetrating a vertical elongated hole 82 in order to be able to precisely adjust the height of the flap 22.
  • an eccentric bushing in the pivot bearing 18 is unnecessary.
  • FIG. 8 illustrates an embodiment of an annular seal 36 which is modified in cross section. It consists of a fastening web which is straight in cross section and an approximately semicircular sealing lip. The fastening web has bores at suitable circumferential intervals in order to be able to screw the seal 36 onto the ring flange 34 of the flap 22.
  • the special feature of this embodiment is that the ring flange 34 has an elongated hole 84 for each clamping screw.
  • the elongated holes 84 are parallel and are directed towards the opening 26 of the mixing drum 14.
  • the seal 36 can thus also be steplessly adjusted relative to the flap 22, namely that each area on both sides adjacent to each clamping screw can be individually adjusted.
  • FIG. 7 illustrates a further modified seal 36, which, like in the embodiment according to FIG. 8 is adjustably attached to the annular flange 34 by means of elongated clamping screws, but has a closed circular hollow profile as a sealing lip.
  • This hollow profile forms an annular chamber 86, into which a supply hose 88 opens, which can be connected to a pressure medium source, not shown.
  • the jacket region of the seal 36 facing the flange 28 of the mixing drum 14 has nozzles 90 at least in the lower semicircle of the seal at circumferential intervals, through which nozzles a cleaning and / or lubricating liquid can be applied to the flange 28 from the pressure medium source.

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

Abstract

A rotatable mixing drum (14) can be closed by means of a flap (22) which has an annular seal (36), the rotated mixing drum (14) sliding on the seal (36). In the closed position, the flap (22) can be supported on a stop (42). In the closed position of the flap (22), the position of the seal (36) is infinitely adjustable and adaptable to the drum mouth by means of adjusting means. <IMAGE>

Description

Die Erfindung betrifft einen Fahrzeug-Betonmischer, mit einem Fahrzeugrahmen, einer an diesem geneigt angeordne­ten, drehbar gelagerten Mischtrommel, an deren hinterem Ende eine von einem ringförmigen Flansch begrenzte Öff­nung zum Beschicken und Entleeren der Mischtrommel ange­ordnet ist, mit einem Antriebsmotor zum wahlweisen Drehen der Mischtrommel in entgegengesetzten Richtungen, mit ei­nem Gestell, das am Fahrzeugrahmen befestigt ist und ober­halb der Mischtrommel ein Schwenklager aufweist, mit einer Klappe, die am Schwenklager zwischen einer Offenstellung und einer Schließstellung schwenkbar gelagert ist und in der Schließstellung die Öffnung der Mischtrommel abschließt und mit einem Trichter, der an der Rückseite der Klappe befestigt ist und diese durchsetzt, weiterhin mit einer ringförmigen Dichtung, die am Außenumfang der Klappe be­festigt ist und in deren Schließstellung an dem ringförmi­gen Flansch der Mischtrommel angedrückt ist und während der Drehung der Mischtrommel an dem Flansch gleitet und mit einem Verstellorgan zum Verschwenken der Klappe.The invention relates to a vehicle concrete mixer, with a vehicle frame, a rotatably mounted mixing drum arranged at an incline thereon, at the rear end of which there is an opening delimited by an annular flange for loading and emptying the mixing drum, with a drive motor for selectively rotating the mixing drum in opposite directions, with a frame that is attached to the vehicle frame and has a swivel bearing above the mixing drum, with a flap that is pivotally mounted on the swivel bearing between an open position and a closed position and closes the opening of the mixing drum in the closed position and with a funnel , which is attached to the rear of the flap and penetrates it, further with an annular seal which is attached to the outer periphery of the flap and is pressed in the closed position on the annular flange of the mixing drum and during rotation d He slides the mixing drum on the flange and with an adjusting element for pivoting the flap.

Ein derartiger Betonmischer ist aus der US-A-2,338,820 bekannt. Die Dichtung steht unter der ständigen Last des Trichters. Die starke Andrückkraft bewirkt einen erhebli­chen Abrieb an der Dichtung. Außerdem wird die Dichtung ungleichmäßig verformt. Die Verformung ist im bodennahen Bereich am größten. Eine sichere Abdichtung der Öffnung ist mit der bekannten Anordnung kaum möglich. Auch bei sehr genauer Lagerung der Klappe läßt sich eine gute Zen­trierung der Klappe zur Öffnung der Mischtrommel in der Praxis nicht erzielen, weil die Mischtrommel - durch die Lagerung bedingt - eine leichte Taumelbewegung im Bereich der heckseitigen Öffnung ausführt.Such a concrete mixer is known from US-A-2,338,820. The seal is under the constant load of the funnel. The strong pressing force causes considerable wear on the seal. In addition, the seal deformed unevenly. The deformation is greatest in the area near the ground. Secure sealing of the opening is hardly possible with the known arrangement. Even with very precise mounting of the flap, good centering of the flap for opening the mixing drum cannot be achieved in practice because the mixing drum - due to the mounting - carries out a slight tumbling movement in the area of the rear opening.

Die DE-A-29 49 026 zeigt einen ähnlichen Betonmischer. Hier hat man auf die Dichtung an der Klappe gänzlich ver­zichtet, sodaß die Abdichtung der Mischtrommel noch proble­matischer ist.DE-A-29 49 026 shows a similar concrete mixer. Here, the seal on the flap has been completely dispensed with, so that sealing the mixing drum is even more problematic.

Grundsätzlich besteht das dringende Bedürfnis, die hecksei­tige Öffnung der Mischtrommel absolut zuverlässig abzudich­ten, weil dann nicht nur jegliche Straßenverschmutzung ausgeschaltet wäre, sondern die Einfüllmenge auch vergrößert werden könnte.Basically, there is an urgent need to seal the rear opening of the mixing drum absolutely reliably, because then not only would all road pollution be switched off, but the filling quantity could also be increased.

Aufgabe der Erfindung ist es daher, eine Anordnung zu schaf­fen, die eine möglichst vollkommene Abdichtung der hecksei­tigen Öffnung einer Mischtrommel gewährleistet.The object of the invention is therefore to provide an arrangement which ensures that the rear opening of a mixing drum is sealed as completely as possible.

Diese Aufgabe wird bei einem Fahrzeug - Betonmischer mit den Merkmalen der eingangs genannten Art dadurch gelöst, daß am Gestell ein mechanischer Anschlag für die Klappe ange­ordnet ist, daß der Anschlag die Klappe in der Schließ­stellung abstützt und daß Einstellmittel vorgesehen sind, um mindestens einen Umfangsteil der aus abriebfestem Kunststoff bestehenden Dichtung der Klappe zu verstellen wenn die Klappe vom Anschlag abgestützt ist.This task is performed on a vehicle concrete mixer with the Features of the type mentioned solved in that a mechanical stop for the flap is arranged on the frame, that the stop supports the flap in the closed position and that adjusting means are provided to adjust at least a peripheral part of the flap seal made of abrasion-resistant plastic if the flap is supported by the stop.

Mit der Erfindung wird der Vorteil erreicht, daß die Dich­tung vom Schwenkmoment der aus Klappe und Trichter be­stehenden Einheit entlastet ist, sodaß die Voraussetzung für ein gleichmäßiges Anpressen der Dichtung geschaffen ist. Die Einstellmittel erlauben eine Feinjustierung der Dichtung.With the invention, the advantage is achieved that the seal is relieved of the pivoting moment of the unit consisting of flap and funnel, so that the prerequisite for a uniform pressing of the seal is created. The setting means allow a fine adjustment of the seal.

Gemäß Weiterbildungen der Erfindung können die Einstellmit­tel dem Anschlagsystem oder auch dem Organ zum Öffnen der Klappe zugeordnet sein. Alternativ oder kumulativ kann das Schwenklager der Klappe verstellbar sein, vorzugsweise über eine Exzenterbuchse und es können auch der Abstand zwischen Schwenklager und Befestigungsstelle am Trichter sowie die Position der Befestigungsstelle am Trichter oder am Schwenklager vorzugsweise stufenlos einstellbar sein, derart, daß sowohl eine etwa horizontale Verstellung der Klappe als auch eine vertikale Verstellung nahe dem Schwenk­ lagerbereich möglich sind. Schließlich ist es ebenfalls alternativ oder kumulativ möglich, die ringförmige Dich­tung in Richtung Andrückkraft abschnittsweise verstell­bar zu machen, um eine Feinanpassung der Lage der Dich­tung an die Position des die Öffnung der Trommel begren­zenden Flansches mindestens in der unteren Hälfte der Öff­nung, vorzugsweise aber um den ganzen Umfang der Öffnung herum,vornehmen zu können.According to further developments of the invention, the setting means can be assigned to the stop system or also to the organ for opening the flap. Alternatively or cumulatively, the pivot bearing of the flap can be adjustable, preferably via an eccentric bushing, and the distance between the pivot bearing and the attachment point on the funnel and the position of the attachment point on the funnel or on the pivot bearing can preferably be infinitely adjustable such that both an approximately horizontal adjustment the flap as well as a vertical adjustment near the swivel storage area are possible. Finally, it is also alternatively or cumulatively possible to make the annular seal adjustable in sections in the direction of the pressing force in order to fine-tune the position of the seal to the position of the flange delimiting the opening of the drum, at least in the lower half of the opening, but preferably around the whole Circumference of the opening around.

Vorzugsweise wird ein Stellzylinder doppeltwirkend ausge­bildet, sodaß die Klappe durch Druckbeaufschlagung an dem vorzugsweise gedämpften Anschlag gedrückt gehalten wird, um zu gewährleisten, daß auch Erschütterungen während der Fahrt keinen negativen Einfluß auf die Abdichtung ha­ben können.An actuating cylinder is preferably designed to be double-acting, so that the flap is kept pressed by pressure on the preferably damped stop, in order to ensure that vibrations during the journey cannot have a negative influence on the seal.

Anhand der Zeichnung sei die Erfindung beispielsweise näher erläutert.

  • FIG. 1 zeigt eine schematische Seitenansicht eines Fahr­zeug-Betonmischers;
  • FIG. 2 zeigt eine Längsschnittansicht durch das hintere Ende der Mischtrommel;
  • FIG. 3 ist eine Detailansicht eines Verstellzylinders mit Einstelleinrichtung für die Klappe;
  • FIG. 4 ist eine Detailansicht eines Anschlagsystems für den heckseitigen Trichter der Mischtrommel;
  • FIG. 5 zeigt im Detail die Ausbildung eines Schwenkla­gers für die heckseitige Klappe der Mischtrommel;
  • FIG. 6 ist eine schematische Ansicht einer abgewandel­ten Ausführungsform der Aufhängung der Heckklappe mit Trichter;
  • FIG. 7 veranschaulicht im Querschnitt eine abgewandel­te Ausführung des Profils einer Dichtung, die an der Klappe verstellbar angeordnet ist; und
  • FIG. 8 zeigt im Schnitt eine abgewandelte Ausführungs­form einer ebenfalls verstellbar angebrachten Dichtung.
The invention will be explained in more detail, for example, with reference to the drawing.
  • FIG. 1 shows a schematic side view of a vehicle concrete mixer;
  • FIG. 2 shows a longitudinal sectional view through the rear end of the mixing drum;
  • FIG. 3 is a detailed view of an adjustment cylinder with adjustment device for the flap;
  • FIG. 4 is a detailed view of a stop system for the rear hopper of the mixing drum;
  • FIG. 5 shows in detail the design of a pivot bearing for the rear flap of the mixing drum;
  • FIG. 6 is a schematic view of a modified embodiment of the tailgate and funnel suspension;
  • FIG. 7 illustrates in cross section a modified embodiment of the profile of a seal which is adjustably arranged on the flap; and
  • FIG. 8 shows in section a modified embodiment of a seal which is also adjustable.

Auf dem Fahrzeugrahmen 12 eines Fahrzeug-Betonmischers 10 ist eine Mischtrommel 14 mit nach hinten ansteigender Achse drehbar gelagert. Am Fahrzeugrahmen 12 ist ein Gestell 16 befestigt, das beidseitig der Mischtrommel 14 nach oben ragt und oberhalb der Kontur der Mischtrommel ein Schwenk­lager 18 für eine Baueinheit 20 aufweist, die aus einer Klappe 22 und einem Trichter 24 besteht.On the vehicle frame 12 of a vehicle concrete mixer 10, a mixing drum 14 is rotatably mounted with an axis rising to the rear. A frame 16 is attached to the vehicle frame 12, which projects upward on both sides of the mixing drum 14 and has a pivot bearing 18 for a structural unit 20 above the contour of the mixing drum, which consists of a flap 22 and a funnel 24.

Die Klappe 22 hat eine im wesentlichen kreisförmige Kontur und schließt eine am hinteren Ende der Mischtrommel 14 ge­bildete Öffnung 26 ab, die von einem Ringflansch 28 begrenzt wird. An der Klappe 22 sind Seitenwände des Trichters 24 angeschweißt, die durch einen Boden 30 miteinander verbun­den sind. Die Klappe 22 hat etwa in Höhe der Drehachse 32 der Mischtrommel 14 eine Öffnung, durch die der Auslaß des Trichters 24 in die Mischtrommel 14 hineinragt. Die Klappe 22 trägt einen Ringflansch 34, an dem eine ringförmige Dich­tung 36 befestigt ist, die am Flansch 28 der Mischtrommel 14 ringsum abdichtend anliegt.The flap 22 has an essentially circular contour and closes an opening 26 formed at the rear end of the mixing drum 14, which opening is delimited by an annular flange 28. Side walls of the funnel 24 are welded to the flap 22 and are connected to one another by a base 30. The flap 22 has approximately the height of the axis of rotation 32 the mixing drum 14 has an opening through which the outlet of the funnel 24 projects into the mixing drum 14. The flap 22 carries an annular flange 34 to which an annular seal 36 is fastened, which rests on the flange 28 of the mixing drum 14 in a sealing manner.

Am Boden 30 des Trichters 24 ist ein Stützschuh 38 befestigt, der bodenseitig ein Dämpfungsglied 40 trägt und mit dem sich der Stützschuh 38 in der Schließstellung der Klappe 22 auf einem Anschlag 42 abstützt, der durch eine Querstrebe des Gestells 16 gebildet ist. Der Stützfuß 38 überträgt das Gewicht des Trichters 24 auf den Anschlag 42, sodaß die Dichtung 36 entlastet ist.On the bottom 30 of the funnel 24, a support shoe 38 is fastened, which carries a damping member 40 on the bottom and with which the support shoe 38 is supported in the closed position of the flap 22 on a stop 42 which is formed by a cross strut of the frame 16. The support foot 38 transfers the weight of the funnel 24 to the stop 42, so that the seal 36 is relieved.

Ein Verstellzylinder 44 ist am Gestell 16 gelagert und seine Kolbenstange greift am Boden 30 des Trichters 24 an. Der Zylinder 44 wird mit Druckluft betätigt. Er ist doppelt wirkend. Wird die Druckluft kolbenseitig zugeführt, schwenkt die Klappe 22 mit Trichter 24 nach hinten und oben in eine Offenstellung, in welcher die Mischtrommel 14 entladen wer­den kann. Wird der Zylinder 44 kolbenstangenseitig beauf­schlagt gelangt die Klappe 22 in ihre Schließstellung, wo­bei der Stützfuß 38 auf dem Anschlag 42 aufliegt. Der Zy­linder 44 bleibt während der Fahrt des Betonmischers 10 druckbeaufschlagt, um die Klappe 22 in der Schließstellung zu verriegeln.An adjusting cylinder 44 is mounted on the frame 16 and its piston rod engages the bottom 30 of the funnel 24. The cylinder 44 is operated with compressed air. It is double acting. If the compressed air is supplied on the piston side, the flap 22 with the funnel 24 swivels backwards and upwards into an open position in which the mixing drum 14 can be unloaded. If the cylinder 44 is acted upon on the piston rod side, the flap 22 reaches its closed position, the support foot 38 resting on the stop 42. The cylinder 44 remains pressurized during the travel of the concrete mixer 10 in order to lock the flap 22 in the closed position.

FIG. 3 veranschaulicht eine abgewandelte Ausführungsform des Verstellzylinders 44, der hier selbst als Anschlag­mittel wirkt, sodaß der Stützschuh 38 und der in Form einer Querstrebe ausgebildete Anschlag 42 gemäß FIG. 2 entfallen können. Dafür muß der Kolben 46 des Zylinders 44 bodenseitig mit einem Dämpfungsglied 48 versehen sein, wie dies gestrichelt in FIG. 3 veranschaulicht ist. Der Zylinder 44 muß so angeordnet und ausgebildet sein, daß das Dämpfungsglied 48 am Boden der Zylinderbohrung an­schlägt, wenn die Klappe 22 ihre Schließstellung erreicht hat. Um die Position der Klappe 22 sehr genau einstellen zu können ist die Befestigungsgabel 50 der Kolbenstange des Zylinders 44 mit einem Schraubbolzen 52 versehen, der in eine stirnseitige Bohrung der Kolbenstange eingeschraubt und mittels einer Mutter 54 gekontert ist.FIG. 3 illustrates a modified embodiment of the adjusting cylinder 44, which itself acts as a stop means here, so that the support shoe 38 and the stop 42 in the form of a cross strut according to FIG. 2 can be omitted. For this purpose, the piston 46 of the cylinder 44 must be provided on the bottom with an attenuator 48, as shown in dashed lines in FIG. 3 is illustrated. The cylinder 44 must be arranged and designed so that the damping member 48 abuts the bottom of the cylinder bore when the flap 22 has reached its closed position. In order to be able to set the position of the flap 22 very precisely, the fastening fork 50 of the piston rod of the cylinder 44 is provided with a screw bolt 52 which is screwed into an end-side bore in the piston rod and is countered by means of a nut 54.

Um die Feinjustierung der Schließstellung der Klappe 22 auch bei der Ausführung gemäß FIG. 2 vornehmen zu können, ist der Stützfuß 38 an einer Schwenkplatte 56 angebracht, die zwischen zwei Laschen um eine Achse 60 schwenkbar ge­lagert ist. Die Laschen 58 sind an der Unterseite des Bo­dens 30 des Trichters 24 angeschweißt. Die beiden Laschen 58 erstrecken sich über die Schwenkachse 60 nach oben oder es sind im Abstand von der Schwenkachse 60 zwei weitere La­schen 62 angeschweißt, zwischen denen die Schwenkplatte 56 geführt ist. Die beiden weiteren Laschen 62 weisen ausgefluch­tete Bogenschlitze 64 auf und die Schwenkplatte 56 hat eine entsprechende Bohrung, sodaß eine Klemmschraube 66 diese Bohrung und die beiden Bogenschlitze 64 durchsetzen kann, um die Schwenkplatte in einer passenden Schwenkstellung festklemmen zu können. Mit dieser Maßnahme läßt sich die Position der Klappe 22 stufenlos feineinstellen, wenn das Dämpfungsglied 40 des Stützfußes 38 auf dem Anschlag 42 ruht.In order to fine-tune the closed position of the flap 22 also in the embodiment according to FIG. 2, the support foot 38 is attached to a swivel plate 56 which is pivotally mounted between two brackets about an axis 60. The tabs 58 are welded to the underside of the bottom 30 of the funnel 24. The two tabs 58 extend upward about the pivot axis 60 or two further tabs 62 are welded at a distance from the pivot axis 60, between which the pivot plate 56 is led. The two further tabs 62 have aligned arc slots 64 and the pivot plate 56 has a corresponding hole, so that a clamping screw 66 can pass through this hole and the two arc slots 64 in order to be able to clamp the pivot plate in a suitable pivot position. With this measure, the position of the flap 22 can be continuously fine-tuned when the damping member 40 of the support foot 38 rests on the stop 42.

FIG. 5 veranschaulicht ein Einstellmittel, das eine Feinein­stellung der Schließposition der Klappe 22 im Bereich des Schwenklagers 18 erlaubt. Die Klappe 22 ist im Breitenbereich des Trichters 24 über den Ringflansch 34 hinaus nach oben verlängert und bildet hier die Trichtervorderwand. Am oberen Ende dieser Trichtervorderwand erstreckt sich ein horizonta­ler Arm 68 zum Schwenklager 18, das eine Lagerhülse 70 auf­weist, in der eine Exzenterbuchse 72 drehbar und feststell­bar gelagert ist. Diese Exzenterbuchse 72 weist eine exzen­trische Bohrung 74 auf, durch die sich ein Lagerbolzen 76 hindurch erstreckte, der am Gestell 16 befestigt ist. Dreht man nun die Exzenterbuchse 72, so verändert sich die Position der Klappe 22 sowohl in horizontaler als auch in vertikaler Richtung. Die genaue Schließposition der Klappe 22 läßt sich somit stufenlos einstellen.FIG. FIG. 5 illustrates an adjustment means that allows a fine adjustment of the closed position of the flap 22 in the area of the pivot bearing 18. The flap 22 is extended in the width region of the funnel 24 beyond the ring flange 34 and forms the front wall of the funnel here. At the upper end of this front wall of the funnel, a horizontal arm 68 extends to the pivot bearing 18, which has a bearing sleeve 70 in which an eccentric bushing 72 is rotatably and fixably mounted. This eccentric bushing 72 has an eccentric bore 74 through which a bearing pin 76 extends, which is fastened to the frame 16. If the eccentric bushing 72 is now rotated, the position of the flap 22 changes both in the horizontal and in the vertical direction. The exact closed position of the flap 22 can thus be adjusted continuously.

FIG. 6 veranschaulicht ein alternatives Einstellmittel der Klappe 22 im Bereich des Schwenklagers 18. Der Arm 68 ist hier geteilt und die beiden Armteile sind teleskopartig verschiebbar, wobei ein Teil ein in Verschieberichtung liegendes Langloch 78 und das andere Teil eine damit aus­gerichtete Bohrung aufweist. Mittels einer Klemmschraube 80 kann die gewünschte Verschiebeposition festgelegt werden. Das trichterseitige Teil des Arms 68 ist an der Vorderwand des Trichters 24 ebenfalls verstellbar angeschraubt, wobei die Klemmschraube ein vertikales Langloch 82 durchsetzt, um die Höhenlage der Klappe 22 genau einstellen zu können. Bei dieser Ausführungsform gemäß FIG. 6 ist eine Exzenter­buchse im Schwenklager 18 entbehrlich.FIG. 6 illustrates an alternative adjustment means of FIG Flap 22 in the region of the pivot bearing 18. The arm 68 is divided here and the two arm parts are telescopically displaceable, one part having an elongated hole 78 in the direction of displacement and the other part having a bore aligned therewith. The desired displacement position can be determined by means of a clamping screw 80. The funnel-side part of the arm 68 is also screwed adjustably to the front wall of the funnel 24, the clamping screw penetrating a vertical elongated hole 82 in order to be able to precisely adjust the height of the flap 22. In this embodiment according to FIG. 6, an eccentric bushing in the pivot bearing 18 is unnecessary.

FIG. 8 veranschaulicht eine im Querschnitt abgewandelte Aus­führungsform einer ringförmigen Dichtung 36. Sie besteht aus einem im Querschnitt geraden Befestigungssteg und einer et­wa halbkreisförmigen Dichtlippe. Der Befestigungssteg hat in passenden Umfangsabständen Bohrungen, um die Dichtung 36 am Ringflansch 34 der Klappe 22 anschrauben zu können. Die Besonderheit dieser Ausführungsform liegt darin, daß der Ringflansch 34 für jede Klemmschraube ein Langloch 84 aufweist. Die Langlöcher 84 liegen parallel und sind zur Öffnung 26 der Mischtrommel 14 hin gerichtet. Die Dichtung 36 kann somit auch relativ zur Klappe 22 stufenlos verstellt werden, und zwar läßt sich jeder Bereich beidseitig benach­bart jeder Klemmschraube individuell einstellen.FIG. 8 illustrates an embodiment of an annular seal 36 which is modified in cross section. It consists of a fastening web which is straight in cross section and an approximately semicircular sealing lip. The fastening web has bores at suitable circumferential intervals in order to be able to screw the seal 36 onto the ring flange 34 of the flap 22. The special feature of this embodiment is that the ring flange 34 has an elongated hole 84 for each clamping screw. The elongated holes 84 are parallel and are directed towards the opening 26 of the mixing drum 14. The seal 36 can thus also be steplessly adjusted relative to the flap 22, namely that each area on both sides adjacent to each clamping screw can be individually adjusted.

FIG. 7 veranschaulicht eine weiter abgewandelte Dichtung 36, die zwar ebenfalls wie bei der Ausführung gemäß FIG. 8 mittels Langlöcher durchsetzender Klemmschrauben am Ring­flansch 34 verstellbar befestigt ist, jedoch ein geschlos­senes kreisförmiges Hohlprofil als Dichtlippe aufweist. Dieses Hohlprofil bildet eine Ringkammer 86, in die ein Zufuhrschlauch 88 mündet, der an eine nicht dargestellte Druckmittelquelle anschließbar ist. Der dem Flansch 28 der Mischtrommel 14 zugewandte Mantelbereich der Dichtung 36 weist mindestens im unteren Halbrund der Dichtung in Umfangsabständen Düsen 90 auf, durch die hindurch eine Rei­nigungs-und/oder Schmierflüssigkeit auf den Flansch 28 aus der Druckmittelquelle aufgetragen werden kann.FIG. FIG. 7 illustrates a further modified seal 36, which, like in the embodiment according to FIG. 8 is adjustably attached to the annular flange 34 by means of elongated clamping screws, but has a closed circular hollow profile as a sealing lip. This hollow profile forms an annular chamber 86, into which a supply hose 88 opens, which can be connected to a pressure medium source, not shown. The jacket region of the seal 36 facing the flange 28 of the mixing drum 14 has nozzles 90 at least in the lower semicircle of the seal at circumferential intervals, through which nozzles a cleaning and / or lubricating liquid can be applied to the flange 28 from the pressure medium source.

Claims (10)

1. Fahrzeug-Betonmischer, mit einem Fahrzeugrahmen (12), einer an diesem geneigt angeordneten drehbar gelagerten Mischtrommel (14), an deren hinterem Ende eine von einem ringförmigen Flansch (28) begrenzte Öffnung (26) zum Beschicken und Entleeren der Mischtrommel (14) angeord­net ist, mit einem Antriebsmotor zum wahlweisen Drehen der Mischtrommel (14) in entgegengesetzten Richtungen, mit einem Gestell (16), das am Fahrzeugrahmen (12) be­festigt ist und oberhalb der Mischtrommel (14) ein Schwenklager (18) aufweist, mit einer Klappe (22), die am Schwenklager (18) zwischen einer Offenstellung und einer Schließstellung schwenkbar gelagert ist und in der Schließstellung die Öffnung (26) der Mischtrommel (14) abschließt und mit einem Trichter (24), der an der Rück­seite der Klappe (22) befestigt ist und diese durchsetzt, weiterhin mit einer ringförmigen Dichtung (36), die am Außenumfang der Klappe (22) befestigt ist und in deren Schließstellung an dem ringförmigen Flansch (28) der Mischtrommel (14) angedrückt ist und während der Drehung der Mischtrommel (14) an dem Flansch (28) gleitet und mit einem Verstellorgan (44) zum Verschwenken der Klappe (22), dadurch gekennzeichnet, daß am Gestell (16) ein mechanischer Anschlag (42, 44) für die Klappe (22) ange­ordnet ist, daß der Anschlag (42, 44) die Klappe (22) in der Schließstellung abstützt und daß Einstellmittel (52, 56, 72, 78, 82, 84) vorgesehen sind, um mindestens einen Umfangsteil der aus abriebfestem Kunststoff beste­henden Dichtung (36) der Klappe (22) zu verstellen, wenn die Klappe (22) vom Anschlag (42, 44) abgestützt ist.1. Concrete vehicle mixer, with a vehicle frame (12), a rotatably mounted mixing drum (14) arranged at an incline thereon, at the rear end of which an opening (26) bounded by an annular flange (28) for loading and emptying the mixing drum (14 ) is arranged, with a drive motor for selectively rotating the mixing drum (14) in opposite directions, with a frame (16) which is attached to the vehicle frame (12) and above the mixing drum (14) has a pivot bearing (18), with a Flap (22) which is pivotally mounted on the pivot bearing (18) between an open position and a closed position and closes the opening (26) of the mixing drum (14) in the closed position and with a funnel (24) which is located on the back of the flap ( 22) is attached and penetrates it, further with an annular seal (36) which is attached to the outer periphery of the flap (22) and in the closed position on the annular flange (28) of the M Ischtrommel (14) is pressed and during the rotation the mixing drum (14) slides on the flange (28) and has an adjusting element (44) for pivoting the flap (22), characterized in that a mechanical stop (42, 44) for the flap (22) on the frame (16) it is arranged that the stop (42, 44) supports the flap (22) in the closed position and that adjusting means (52, 56, 72, 78, 82, 84) are provided to cover at least a peripheral part of the seal made of abrasion-resistant plastic ( 36) of the flap (22) to be adjusted when the flap (22) is supported by the stop (42, 44). 2. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß an der Unterseite des Trichters (24) ein Stützschuh (38) befestigt ist, der in der Schließstel­lung der Klappe (22) auf dem Anschlag (42) ruht, welcher von einer Strebe des Gestells (16) gebildet ist.2. Vehicle concrete mixer according to claim 1, characterized in that on the underside of the funnel (24) a support shoe (38) is attached, which rests in the closed position of the flap (22) on the stop (42), which is from a strut the frame (16) is formed. 3. Fahrzeug-Betonmischer nach Anspruch 2, dadurch gekenn­zeichnet, daß zwischen Stützschuh (38) und Strebe (42) ein Dämpfungsglied (40) angeordnet ist.3. Vehicle concrete mixer according to claim 2, characterized in that an attenuator (40) is arranged between the support shoe (38) and strut (42). 4. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß die Einstellmittel (56) an einem der bei­den, den Stützschuh (38) und die Strebe (42) umfassenden Teile vorgesehen sind.4. Vehicle concrete mixer according to claim 1, characterized in that the adjusting means (56) on one of the two, the support shoe (38) and the strut (42) are provided parts. 5. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß der Anschlag in einem Verstellzylinder (44) ausgebildet ist , der das Verstellmittel bildet und daß die Einstellmittel einen Schraubbolzen (52) umfassen, mit dem ein Ende des Verstellzylinders (44) in dessen Längs­richtung verstellbar ist.5. A vehicle concrete mixer according to claim 1, characterized in that the stop is formed in an adjusting cylinder (44) which forms the adjusting means and that the adjusting means comprise a screw bolt (52) with which one end of the adjusting cylinder (44) in it Is adjustable in the longitudinal direction. 6. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß das Verstellmittel (44) als doppelwirken­der Druckluftzylinder ausgebildet ist und daß die Klappe (22) durch ständige Druckmittelbeaufschlagung in ihrer Schließstellung pneumatisch verriegelt ist.6. Vehicle concrete mixer according to claim 1, characterized in that the adjusting means (44) is designed as a double-acting compressed air cylinder and that the flap (22) is pneumatically locked in its closed position by constant pressure medium application. 7. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß das Schwenklager (18) eine Exzenterbuchse (72) aufweist, bei deren Drehung die Achse des Schwenk­lagers (18) auf einem Kreis verstellbar ist.7. Vehicle concrete mixer according to claim 1, characterized in that the pivot bearing (18) has an eccentric bushing (72), upon rotation of which the axis of the pivot bearing (18) is adjustable on a circle. 8. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß das Schwenklager (18) mit der aus Klappe (22) und Trichter (24) bestehenden Baueinheit durch einen Arm (68) verbunden ist und daß der Arm (68) mindestens ein Einstellmittel (78, 82) aufweist.8. Vehicle concrete mixer according to claim 1, characterized in that the pivot bearing (18) with the flap (22) and funnel (24) existing unit is connected by an arm (68) and that the arm (68) at least one adjusting means (78, 82). 9. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß die Dichtung (36) mittels einer Anzahl in Umfangsabständen angeordneter Schrauben an der Klappe (22) befestigt ist, welche Langlöcher (84) zur individuellen Einstellung des jeder Schraube benachbarten Abschnittes der Dichtung (36) durchsetzen.9. Vehicle concrete mixer according to claim 1, characterized in that the seal (36) by means of a number in Circumferentially spaced screws are attached to the flap (22), which pass through elongated holes (84) for individual adjustment of the portion of the seal (36) adjacent to each screw. 10. Fahrzeug-Betonmischer nach Anspruch 1, dadurch gekenn­zeichnet, daß die Dichtung (36) ein geschlossenes Hohl­profil aufweist, in dem dem Flansch (28) der Mischtrommel (14) zugewandte Düsen (90) vorgesehen sind und daß in den vom Hohlprofil gebildeten Ringraum (86) eine Zufuhr­leitung (88) mündet, die an eine Druckmittelquelle an­schließbar ist.10. A vehicle concrete mixer according to claim 1, characterized in that the seal (36) has a closed hollow profile, in which the flange (28) of the mixing drum (14) facing nozzles (90) are provided and that in the annular space formed by the hollow profile (86) opens a supply line (88) which can be connected to a pressure medium source.
EP89122866A 1988-12-17 1989-12-12 Vehicle concrete mixer Expired - Lifetime EP0374682B2 (en)

Applications Claiming Priority (2)

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DE3842542 1988-12-17
DE3842542 1988-12-17

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EP0374682A1 true EP0374682A1 (en) 1990-06-27
EP0374682B1 EP0374682B1 (en) 1991-09-25
EP0374682B2 EP0374682B2 (en) 1994-05-25

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EP89122865A Withdrawn EP0374681A1 (en) 1988-12-17 1989-12-12 Vehicle mixer

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9011400U1 (en) * 1990-08-04 1990-10-11 Stetter Gmbh, 8940 Memmingen Vehicle mixer
DE4431501A1 (en) * 1994-09-03 1996-03-07 Stetter Gmbh Vehicle mixers for flowable media, such as concrete
CN109986698A (en) * 2019-05-08 2019-07-09 盛镝 A kind of spiral rotary seal rotating bucket self-sealing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59303269D1 (en) * 1993-05-05 1996-08-22 Stetter Gmbh Vehicle mixers for flowable media, such as concrete
DE9416517U1 (en) * 1994-10-13 1995-01-12 Liebherr-Mischtechnik Gmbh, 88427 Bad Schussenried Truck mixer
CN105666699B (en) * 2016-03-08 2018-04-20 莱州亚通重型装备有限公司 A kind of tank body sealing device of discharge opening of concrete mixer truck
DE102017104459A1 (en) 2017-03-03 2018-09-06 Putzmeister Engineering Gmbh Adjustable closure unit for mixer drum opening
CN113967977B (en) * 2021-10-26 2024-05-14 福建晋江市山水鞋材有限公司 EVA shoe material mixing equipment and mixing method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB279339A (en) * 1927-02-17 1927-10-27 Jacob Knappich Improvements in or relating to vehicles for conveying loose materials
AT112225B (en) * 1927-02-17 1929-02-11 Jacob Knappich Motor vehicles for bulk goods, in particular for garbage collection.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1895169A (en) * 1930-03-14 1933-01-24 Jaeger Machine Co Closure
US1918205A (en) * 1930-05-17 1933-07-11 Chain Belt Co Rear closure for truck mixers
US2270628A (en) * 1941-04-02 1942-01-20 James H Fitzgerald Concrete mixer
US2308901A (en) * 1941-06-05 1943-01-19 Chain Belt Co Concrete mixer
US2316137A (en) * 1941-09-22 1943-04-06 Jaeger Machine Co Truck mixer
DE805855C (en) * 1943-07-10 1951-05-31 Jaeger Machine Co Sealing on a concrete mixer
US2454940A (en) * 1946-07-27 1948-11-30 T L Smith Co Seal for chutes of concrete mixers
DE2505014A1 (en) * 1975-02-06 1976-08-26 Papenmeier Kg Maschf Guenther MIXER ARRANGEMENT WITH TWO MIXING CONTAINERS
DE8520089U1 (en) * 1985-07-11 1985-08-22 Dr. Herfeld GmbH & Co KG, 5982 Neuenrade mixer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB279339A (en) * 1927-02-17 1927-10-27 Jacob Knappich Improvements in or relating to vehicles for conveying loose materials
AT112225B (en) * 1927-02-17 1929-02-11 Jacob Knappich Motor vehicles for bulk goods, in particular for garbage collection.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
SOVIET INVENTIONS ILLUSTRATED, Sektion P,Q, Woche 8826, 10. August 1988 DERWENT PUBLICATIONS LTD., London, Q 15 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9011400U1 (en) * 1990-08-04 1990-10-11 Stetter Gmbh, 8940 Memmingen Vehicle mixer
DE4431501A1 (en) * 1994-09-03 1996-03-07 Stetter Gmbh Vehicle mixers for flowable media, such as concrete
DE4431501B4 (en) * 1994-09-03 2004-09-16 Stetter Gmbh Vehicle mixers for flowable media, such as concrete
CN109986698A (en) * 2019-05-08 2019-07-09 盛镝 A kind of spiral rotary seal rotating bucket self-sealing
CN109986698B (en) * 2019-05-08 2024-04-19 盛镝 Self-sealing spiral rotary sealing device for rotary barrel

Also Published As

Publication number Publication date
EP0374682B1 (en) 1991-09-25
DE58900325D1 (en) 1991-10-31
EP0374682B2 (en) 1994-05-25
EP0374681A1 (en) 1990-06-27

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