EP1982811A2 - Building material mixer - Google Patents

Building material mixer Download PDF

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Publication number
EP1982811A2
EP1982811A2 EP08006743A EP08006743A EP1982811A2 EP 1982811 A2 EP1982811 A2 EP 1982811A2 EP 08006743 A EP08006743 A EP 08006743A EP 08006743 A EP08006743 A EP 08006743A EP 1982811 A2 EP1982811 A2 EP 1982811A2
Authority
EP
European Patent Office
Prior art keywords
mixer
drive
bearing
drum
building material
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
EP08006743A
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German (de)
French (fr)
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EP1982811B1 (en
EP1982811A3 (en
Inventor
Klaus-Peter Mollhagen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liebherr Components Biberach GmbH
Original Assignee
Liebherr Werk Biberach GmbH
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Application filed by Liebherr Werk Biberach GmbH filed Critical Liebherr Werk Biberach GmbH
Publication of EP1982811A2 publication Critical patent/EP1982811A2/en
Publication of EP1982811A3 publication Critical patent/EP1982811A3/en
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Publication of EP1982811B1 publication Critical patent/EP1982811B1/en
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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
    • B28C5/4265—Mounting means for drums; Support frames
    • 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
    • B28C5/4206—Control apparatus; Drive systems, e.g. coupled to the vehicle drive-system
    • B28C5/421—Drives
    • B28C5/4217—Drives in combination with drum mountings; Drives directly coupled to the axis of rotating drums

Definitions

  • the present invention relates to a building material mixer with a mixer drum which is rotatably driven by a mixer drive, wherein the mixer drum is rotatably supported at one of its front ends by the mixer drive to a mixer frame part, in particular chassis frame part, and the mixer drive a drive part, in particular hydraulic motor, and a Having associated with the mixer drum drive gear.
  • FIG. 3 shows a conventional mixer drive, more precisely its transmission, which is designed as a two-stage planetary gear, which is driven on the input side by a drive motor not shown and the output side drives a drum flange, in the FIG. 3 drawn on the right and is rigidly connected to the mixer drum.
  • the gearbox of in FIG. 3 shown Mischergetriebes is rigidly bolted to a bearing rigidly connected to the bearing block.
  • Twisting of the mixer frame bearing the mixer frame relative to the mixer drum or vice versa can be compensated by the torsionally formed drum flange to a certain extent.
  • the said drum flange is formed directly on the output shaft of the mixer gear, but formed quite thin so that it allows twisting due to tilting movements.
  • the bearing of the drum flange bearing output shaft is formed by inclined tapered roller bearings such that also here the torsional stiffness is kept quite limited to allow compensating movements.
  • the object of the present invention is to provide an improved building material mixer of the type mentioned, which avoids the disadvantages of the prior art and further develops the latter in an advantageous manner.
  • the torsions between the mixer frame and the mixer drum no longer or no longer intercept only at the interface between the mixer gear and mixer drum, but to fix the entire mixer drive movably on the mixer frame, so that the entire mixer drive mitigates twisting movements of the mixer drum relative to the chassis frame or Conversely, torsional movements of the chassis frame at the interface between mixer frame and mixer drive can be compensated.
  • the mixer drive is movably mounted on the mixer frame part by means of movable bearing means permitting tilting movements.
  • the mixer drum is attached to the gear housing of the drive gear, whereby a projecting beyond the drive gear drum flange and thereby the axial length of the arrangement can be shortened.
  • the output movement of the mixer gear is no longer transmitted via a gear shaft and a drum flange attached thereto, but via the gear housing of the mixer gear to the mixer drum.
  • the gear housing is no longer rigidly mounted on the mixer frame part, but rotatably mounted.
  • the transmission shaft is no longer exposed to the known high bending forces, also results from a contraction of the frame-side bearing and the mischertrommel thesisen bearing point a small lever arm, the total leads to a lower stress on the mixer drive and in particular of the mixer gear to torsion.
  • the mixer drum is attached to a drum bearing point of the gear housing, which is set back from the mixer drum facing end side of the drive gear to the drive part of the mixer drive back so that the drive gear from said drum bearing point out to the mixer drum or in the mixer drum protrudes into it.
  • the drum bearing point is thus set back to the drive motor, whereby the introduced at the drum bearing point in the transmission housing bearing forces have a short lever length with respect to the frame-side bearing point and a favorable power flow with respect to the bearing forces can be achieved.
  • the gear housing may have a mantle surface side projecting mounting flange to which the mixer drum or a mixer drum connecting piece is rigidly fixed, for example, is screwed firmly by bolts.
  • the said mounting flange can in this case, for example, placed in the manner of a tire on the gear housing and fixed there rigidly, for example, welded or screwed.
  • the mounting flange is preferably integrally formed on the gear housing.
  • the frame-side bearing means by means of which the mixer drive on the mixer frame with respect to the drive axis of rotation rotatably, but stored in a tilting transversely permitting manner, advantageously engage at a bearing point of the mixer drive, which is in the range of the drive part, in particular the hydraulic motor of the mixer drive.
  • said frame-side bearing point of the mixer drive can be approximately centrally to the axial extension of a motor body of the mixer drive.
  • the bearings of the mixer drive namely the frame-side bearing on the one hand and the mixer drum side bearing on the other hand, together, so that overall favorable conditions with respect to the power flow and the derivative of the bearing forces arise.
  • a particularly compact design is achieved, which is characterized by low axial space requirement.
  • the aforementioned storage means for movable, tilting movements permitting storage of the mixer drive to the mixer frame are advantageously elastic and motion damping, in particular rubber-elastic, so that not only compensates twisting and misalignment between the frame part and mixer drum, but also intercepted dynamic bearing forces in a favorable manner and reduces unwanted vibrations can be.
  • the bearing means comprise in particular at least one rubber-elastic bearing element, by which the mixer drive is secured to the mixer frame part.
  • the at least one rubber bearing element is installed and / or formed in such a way that the rubber bearing element experiences no tensile stresses, but is always claimed only on pressure and / or shear.
  • the rubber bearing member may be installed under a sufficiently strong bias, which prevent the occurrence of tensile stresses of the rubber bearing member.
  • the bearing element need not necessarily be a rubber bearing element, it may also be provided with a corresponding properties exhibiting plastic bearing element or a bearing element made of a different material, which has the desired elastic and / or vibration damping properties.
  • a bearing ring may be provided in which a preferably cylindrical and / or annular bearing inner part is seated such that the bearing inner part opposite the bearing ring is rotatably held with respect to the axis of rotation of the drive, but can move relative to the bearing ring, in particular in the form of tilting about a pivot axis of the mixer drive and / or the mixer drum transverse tilt axis, wherein the mobility is advantageously designed such that tilting movements around a plurality of tilting axes, which are in a plane perpendicular to the mixer drum rotation axis, are possible.
  • At least one elastic bearing element preferably a rubber bearing element, is provided between said bearing ring and the bearing inner part seated therein, by which the bearing ring and the bearing inner part are held movably relative to one another.
  • a plurality of elastic bearing elements can be stacked on top of each other between the bearing ring and the bearing inner part seated therein, wherein annular intermediate pieces can be provided between the individual bearing elements.
  • the said bearing ring need not necessarily have the form of a closed ring, it may also be provided a bearing ring in the form of a ring segment in the manner of a half-ring or three-quarter annular bearing bed or a storage fork. Preferably, however, a full bearing ring is provided, in which the bearing inner part is fully enclosed.
  • the bearing inner part here is advantageously approximately cylindrical and in particular also annular, wherein the outer shell side of the bearing inner part may be curved crowned.
  • the bearing ring surrounds a housing part surrounding the drive part of the mixer drive, in particular its hydraulic motor, on which the aforementioned bearing inner part is provided.
  • the bearing inner part can in this case be formed as a separate component and rigidly secured to the housing part.
  • the bearing inner part can also be formed integrally directly on the housing part.
  • the bearing ring surrounding the said housing part can be rigidly fastened to the mixer frame part, for example screwed by screw bolts.
  • the gear housing carrying the mixer drum can basically be constructed differently.
  • the gear housing has a shell surface part connected to the mixer drum, which is rotatably mounted on a housing connecting part, which is supported by the aforementioned bearing means on the mixer frame.
  • the housing connection piece can in this case advantageously surround the drive part of the mixer drive, in particular its motor body, and / or form a housing part for this drive part.
  • the housing connecting piece surrounding the drive part can advantageously form a receiving chamber into which the drive part, in particular the motor of the mixer drive, can be inserted in the manner of a separate module. Accordingly, the engine need only be pushed axially onto the transmission, and vice versa, it can be disassembled in a simple manner.
  • a clutch that can be closed and released by axial movement is preferably provided between the motor shaft and the transmission input shaft.
  • a stop may be provided which limits a tilting of the mixer drive relative to the mixer frame.
  • the stop can basically be designed in various ways.
  • the stop can form a stop part formed by the bearing ring as well as a stop part formed by or connected to the gear housing include, which approach each other when reaching a predetermined amount of tilting movement.
  • the movable mounting of the mixer drive on the mixer frame part has a mobility in the form of an approved angular offset of more than 2 ° and preferably less than 10 °.
  • the permitted angular offset between 4 ° and 8 °, in particular about 6 ° amount, which on the one hand allows a sufficient compensation of frame distortions and on the other hand prevents a vibration problem by excessive mobility.
  • mixer drive 1 sits on a mixer bearing 2 on a bearing block 3, which is mounted with the chassis frame 4 of a driving mixer, not shown, moreover.
  • the truck mixer comprises in a conventional manner a multi-axle chassis with corresponding wheels, which carries the said chassis frame 4, on which in also known per se A driver's cab is arranged, behind which the mixer drive and driven therefrom mixer drum 5 lie.
  • the mixer drive 1 comprises a drive part 6 for generating a rotary drive movement and a drive gear 7, which is driven on the input side of said drive part 6 and the output side rotatably drives the mixer drum 5.
  • the drive gear 7 is formed as a two-stage planetary gear, the sun gear of the first stage is driven via the input shaft 8 of the drive member 6 ago.
  • the drive part 6 comprises a hydraulic motor 9 in the form of a hydraulic axial piston motor, the drive shaft 10 with the input shaft 8 of the drive gear 7 is rotatably coupled.
  • the drive member 6 is seated frontally on the drive gear 7, see. FIG. 1 ,
  • the drive gear 7 comprises a housing 11 which includes a lateral surface portion 12 which circumferentially surrounds the gear stages of the planetary gear.
  • a radially projecting drum flange 13 is provided approximately axially in the middle, on which the mixer drum 5, which in FIG. 1 only indicated, by bolts 14 is rigidly fastened.
  • the said drum flange 13 is set back from the mixer drum 5 facing end face 15 of the drive gear 7 to the drive part 6 out, see. FIG. 1 , so that the drive gear 7 or its gear housing 11 projects toward the mixer drum 5.
  • the lateral surface part 12 of the gear housing 11 is rotatably supported by a roller bearing 16 on a housing connection part 17, on the one hand the drive gear 7 covers the front side and on the other hand limits a receiving chamber 18, in which the hydraulic motor 9 of the drive member 6 is inserted end face, see. FIG. 1 , This allows the hydraulic motor 9 in the manner of a separate module simply to the Drive gear 7 attached or used in the housing connector 17 by being secured by bolts 19.
  • the housing connecting part 17 is rotatably supported by the mixer bearing 2 with respect to the motor axis of rotation, but tiltable about this transverse transverse axes mounted on the bearing block 3 of the chassis frame 4.
  • the tiltability of the mixer drive 1 is given in the manner of a ball joint in all directions, ie the tiltability can by several in a plane to the FIG. 1 vertical plane extending tilt axes take place.
  • FIG. 2 shows a tilted position, wherein the maximum tilt angle is plotted 6 °.
  • the mixer bearing 2 in this case comprises movably formed, the tilting movements transverse to the drive axis permitting bearing means 20 which are elastic and damping, in particular rubber-elastic, are formed.
  • the bearing means 20 advantageously comprise a plurality of elastic, deformable bearing elements 21, which may be formed in particular in the form of rubber bearing elements by which the mixer drive 1 is mounted on the bearing block 3 connected to the chassis frame 4.
  • the bearing means 20 thereby comprise a bearing ring 22 in which a likewise annular bearing inner part 23 is seated, which can be tilted relative to the bearing ring 22.
  • the bearing elements 21 may in this case form annular shell segments, but preferably be designed as bearing ring elements and have a flattened, elongated cross section, see. FIG. 1 , In the illustrated embodiment, a plurality of annular elastic bearing elements 21 sit one above the other or into each other, wherein the bearing elements 21 are separated from each other by likewise annular spacers 24, cf.
  • FIG. 1 In the illustrated embodiment, a plurality of annular elastic bearing elements 21 sit one above the other or into each other, wherein the bearing elements 21 are separated from each other by likewise annular spacers 24, cf.
  • the elastic, in particular rubber-elastic bearing elements 21 are biased between the bearing ring 22 and the bearing inner part 23 in such a way that they also in deformations, as FIG. 2 shows, only on pressure or shear, but not claimed on train.
  • the elastic bearing elements 21 of the bearing ring 22 and the bearing inner part 23 are mutually movable and in particular tiltable, as FIG. 2 shows, so that the bearing means 20 in total or the mixer bearing 2 has a mobility that allows tilting movements of the mixer drive 1 to almost any tilting axes transverse to the drive axis.
  • the tiltability of the mixer drive 1 relative to the bearing block 3 is limited by a stop 25 which is formed on the one hand by an end face of the bearing ring 22 and on the other hand, a cover 26 which covers the bearing gap between the lateral surface portion 12 of the gear housing 11 and the housing connector part 17 and the latter housing connection part 17 is attached.

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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)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Accessories For Mixers (AREA)

Abstract

The mixer has a mixer drum (5) rotatably driven by a mixer drive (1), where front side ends of the mixer drum is pivoted at a mixer frame part i.e. chassis frame part (4), by the mixer drive. The mixer drive has a drive component (6) with a hydraulic motor (9), and a drive gear (7) connected with the mixer drum. The mixer drive is movably supported at the mixer frame part by a support unit (20) allowing movable tilting movements. The mixer drum is fastened to a gear casing (11) of the drive gear.

Description

Die vorliegende Erfindung betrifft einen Baustoffmischer mit einer Mischertrommel, die von einem Mischerantrieb rotatorisch antreibbar ist, wobei die Mischertrommel an einem ihrer stirnseitigen Enden durch den Mischerantrieb an einem Mischerrahmenteil, insbesondere Fahrwerksrahmenteil, drehbar gelagert ist und der Mischerantrieb einen Antriebsteil, insbesondere Hydromotor, und ein mit der Mischertrommel verbundenes Antriebsgetriebe aufweist.The present invention relates to a building material mixer with a mixer drum which is rotatably driven by a mixer drive, wherein the mixer drum is rotatably supported at one of its front ends by the mixer drive to a mixer frame part, in particular chassis frame part, and the mixer drive a drive part, in particular hydraulic motor, and a Having associated with the mixer drum drive gear.

Bei Baustoffmischern in Form von Fahrmischern, die üblicherweise zur Anlieferung von vorgemischtem Beton zu Baustellen genutzt werden, wirken auf die Mischertrommel oft große dynamische Kräfte, beispielsweise bei Anfahrt über holprige Zufahrtswege, so dass die oft schwer beladenen Mischertrommeln beträchtliche dynamische Lagerkräfte verursachen. Zum anderen kommt es bei Fahren auf unebenem Gelände zu Verwindungen des Fahrwerkrahmens, auf dem die Mischertrommel gelagert ist, so dass sich Fluchtungsfehler der Lagerstellen ergeben bzw. sich die rahmenseitige Lagerstelle gegenüber der trommelseitigen Lagerstelle verwindet. Diese Verwindungen und dynamischen Lagerbeanspruchungen sind besonders auf der Seite der Mischertrommel problematisch, die durch den Mischerantrieb gelagert ist, da derartige Verwindungen bzw. dynamische Lagerkräfte nicht ohne weiteres in das Getriebe des Mischerantriebs eingeleitet werden können. Um die genannten Verwindungen und Fluchtungsfehler in Folge von Rahmenverwindungen ausgleichen bzw. zulassen zu können, wird herkömmlicherweise die Verbindung zwischen Mischerantrieb und Mischertrommel nachgiebig ausgebildet, indem ein verwindungsfähiges Anschlussteil für die Mischertrommelbefestigung verwendet wird. Die Figur 3 zeigt einen herkömmlichen Mischerantrieb, genauer gesagt dessen Getriebe, das als zweistufiges Planetengetriebe ausgebildet ist, welches eingangsseitig von einem nicht näher dargestellten Antriebsmotor angetrieben wird und ausgangsseitig einen Trommelflansch antreibt, der in der Figur 3 rechts gezeichnet ist und mit der Mischertrommel starr verbunden wird. Das Getriebegehäuse des in Figur 3 gezeigten Mischergetriebes wird auf einem mit dem Fahrwerk starr verbundenen Lagerbock starr verschraubt. Verwindungen des den Mischerantrieb tragenden Fahrwerksrahmens gegenüber der Mischertrommel bzw. umgekehrt können durch den verwindungsfähig ausgebildeten Trommelflansch bis zu einem gewissen Maß kompensiert werden. Wie Figur 3 zeigt, ist der besagte Trommelflansch unmittelbar an der Abtriebswelle des Mischergetriebes angeformt, jedoch recht dünn ausgebildet, so dass er Verwindungen in Folge von Kippbewegungen zulässt. Zudem ist die Lagerung der den Trommelflansch tragenden Abtriebswelle durch schräggestellte Kegelrollenlager derart ausgebildet, dass auch hierüber die Verwindungssteifigkeit recht begrenzt gehalten ist, um Ausgleichsbewegungen zuzulassen.In building material mixers in the form of truck mixers, which are usually used for delivery of premixed concrete to construction sites, act on the mixer drum often large dynamic forces, for example when driving on bumpy access roads, so that the often heavily loaded mixer drums cause considerable dynamic bearing forces. On the other hand, when driving on uneven terrain to torsions of the chassis frame on which the mixer drum is mounted so that there are misalignment of the bearings or the frame-side bearing against the drum side bearing twisted. These distortions and dynamic bearing stresses are particularly problematic on the side of the mixer drum, through the mixer drive is stored, since such torsions or dynamic bearing forces can not be readily introduced into the transmission of the mixer drive. In order to be able to compensate for the said distortions and misalignments as a result of frame distortions, conventionally the connection between the mixer drive and the mixer drum is made yielding by using a twistable connection part for the mixer drum attachment. The FIG. 3 shows a conventional mixer drive, more precisely its transmission, which is designed as a two-stage planetary gear, which is driven on the input side by a drive motor not shown and the output side drives a drum flange, in the FIG. 3 drawn on the right and is rigidly connected to the mixer drum. The gearbox of in FIG. 3 shown Mischergetriebes is rigidly bolted to a bearing rigidly connected to the bearing block. Twisting of the mixer frame bearing the mixer frame relative to the mixer drum or vice versa can be compensated by the torsionally formed drum flange to a certain extent. As FIG. 3 shows, the said drum flange is formed directly on the output shaft of the mixer gear, but formed quite thin so that it allows twisting due to tilting movements. In addition, the bearing of the drum flange bearing output shaft is formed by inclined tapered roller bearings such that also here the torsional stiffness is kept quite limited to allow compensating movements.

Das Zulassen der genannten Verwindungen und ihre Kompensation kann jedoch Ermüdungsprobleme mit sich bringen. Zudem kann die Schwingungsproblematik in Folge dynamischer Belastungen durch die bislang bekannten Lösungen nur unbefriedigend gelöst werden. Auch wäre es wünschenswert, kleinbauendere Lösungen zu erreichen.Allowing said twistings and their compensation, however, can cause fatigue problems. In addition, the vibration problem can be solved unsatisfactory as a result of dynamic loads by the previously known solutions. It would also be desirable to achieve smaller scale solutions.

Der vorliegenden Erfindung liegt hiervon ausgehend die Aufgabe zugrunde, einen verbesserten Baustoffmischer der genannten Art zu schaffen, der Nachteile des Standes der Technik vermeidet und letzteren in vorteilhafter Weise weiterbildet.On this basis, the object of the present invention is to provide an improved building material mixer of the type mentioned, which avoids the disadvantages of the prior art and further develops the latter in an advantageous manner.

Insbesondere soll eine bessere Kompensation von Verwindungen des den Mischerantrieb tragenden Rahmenteils gegenüber der Mischertrommel mit einer kleinbauenden, kompakten Lageranordnung erreicht werden, die gleichzeitig auch die dynamischen Belastungen von der Mischertrommel her abfängt.In particular, a better compensation of torsions of the mixer drive bearing frame part relative to the mixer drum with a small-sized, compact bearing assembly is to be achieved, which also simultaneously intercepts the dynamic loads of the mixer drum forth.

Erfindungsgemäß wird diese Aufgabe durch einen Baustoffmischer gemäß Anspruch 1 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der abhängigen Ansprüche.According to the invention, this object is achieved by a building material mixer according to claim 1. Preferred embodiments of the invention are the subject of the dependent claims.

Es wird also vorgeschlagen, die Verwindungen zwischen Mischerrahmen und Mischertrommel nicht mehr bzw. nicht mehr nur an der Schnittstelle zwischen Mischergetriebe und Mischertrommel abzufangen, sondern den gesamten Mischerantrieb beweglich am Mischerrahmen zu befestigen, so dass der gesamte Mischerantrieb Verwindungsbewegungen der Mischertrommel gegenüber dem Fahrwerksrahmen mitmacht bzw. umgekehrt Verwindungsbewegungen des Fahrwerksrahmens an der Schnittstelle zwischen Mischerrahmen und Mischerantrieb kompensiert werden. Erfindungsgemäß ist der Mischerantrieb durch bewegliche, Kippbewegungen zulassende Lagermittel an dem Mischerrahmenteil beweglich gelagert. Die Mischertrommel ist dabei an dem Getriebegehäuse des Antriebsgetriebes befestigt, wodurch ein über das Antriebsgetriebe überstehender Trommelflansch eingespart und hierdurch die axiale Baulänge der Anordnung verkürzt werden kann. Im Gegensatz zu bisherigen Lösungen wird die Abtriebsbewegung des Mischergetriebes nicht mehr über eine Getriebewelle und einen daran befestigten Trommelflansch, sondern über das Getriebegehäuse des Mischergetriebes auf die Mischertrommel übertragen. Dementsprechend ist das Getriebegehäuse nicht mehr starr am Mischerrahmenteil befestigt, sondern drehbar gelagert. Hierdurch kann nicht nur eine axial kürzer bauende Anordnung erreicht, sondern auch ein besserer Kraftfluss hinsichtlich der von der Mischertrommel induzierten Lagerkräfte erreicht werden. Die Getriebewelle wird nicht mehr den bekannten hohen Biegekräften ausgesetzt, zudem ergibt sich durch ein Zusammenrücken der rahmenseitigen Lagerstelle und der mischertrommelseitigen Lagerstelle ein geringer Hebelarm, der insgesamt zu einer geringeren Beanspruchung des Mischerantriebs und insbesondere des Mischergetriebes auf Verwindung führt.It is therefore proposed that the torsions between the mixer frame and the mixer drum no longer or no longer intercept only at the interface between the mixer gear and mixer drum, but to fix the entire mixer drive movably on the mixer frame, so that the entire mixer drive mitigates twisting movements of the mixer drum relative to the chassis frame or Conversely, torsional movements of the chassis frame at the interface between mixer frame and mixer drive can be compensated. According to the invention, the mixer drive is movably mounted on the mixer frame part by means of movable bearing means permitting tilting movements. The mixer drum is attached to the gear housing of the drive gear, whereby a projecting beyond the drive gear drum flange and thereby the axial length of the arrangement can be shortened. In contrast to previous solutions, the output movement of the mixer gear is no longer transmitted via a gear shaft and a drum flange attached thereto, but via the gear housing of the mixer gear to the mixer drum. Accordingly, the gear housing is no longer rigidly mounted on the mixer frame part, but rotatably mounted. As a result, not only an axially shorter construction arrangement can be achieved, but also a better power flow can be achieved with respect to the bearing forces induced by the mixer drum. The transmission shaft is no longer exposed to the known high bending forces, also results from a contraction of the frame-side bearing and the mischertrommelseitigen bearing point a small lever arm, the total leads to a lower stress on the mixer drive and in particular of the mixer gear to torsion.

In Weiterbildung der Erfindung ist dabei die Mischertrommel an einer Trommellagerstelle des Getriebegehäuses befestigt, die von der der Mischertrommel zugewandten Stirnseite des Antriebsgetriebes zum Antriebsteil des Mischerantriebs hin zurückversetzt ist derart, dass das Antriebsgetriebe von der genannten Trommellagerstelle aus zu der Mischertrommel hin bzw. in die Mischertrommel hinein vorspringt. Die Trommellagerstelle ist also zum Antriebsmotor hin zurückversetzt, wodurch die an der Trommellagerstelle in das Getriebegehäuse eingeleiteten Lagerkräfte eine geringe Hebellänge bezüglich der rahmenseitigen Lagerstelle haben und ein günstiger Kraftfluss bezüglich der Lagerkräfte erreicht werden kann.In a further development of the invention, the mixer drum is attached to a drum bearing point of the gear housing, which is set back from the mixer drum facing end side of the drive gear to the drive part of the mixer drive back so that the drive gear from said drum bearing point out to the mixer drum or in the mixer drum protrudes into it. The drum bearing point is thus set back to the drive motor, whereby the introduced at the drum bearing point in the transmission housing bearing forces have a short lever length with respect to the frame-side bearing point and a favorable power flow with respect to the bearing forces can be achieved.

Insbesondere kann das Getriebegehäuse einen mantelflächenseitig vorspringenden Befestigungsflansch aufweisen, an dem die Mischertrommel bzw. ein Mischertrommelanschlussstück starr befestigt ist, beispielsweise durch Schraubbolzen fest angeschraubt ist. Der genannte Befestigungsflansch kann hierbei beispielsweise nach Art eines Reifens auf das Getriebegehäuse aufgesetzt und dort starr befestigt, beispielsweise angeschweißt oder verschraubt sein. In Weiterbildung der Erfindung ist der Befestigungsflansch vorzugsweise integral an das Getriebegehäuse angeformt.In particular, the gear housing may have a mantle surface side projecting mounting flange to which the mixer drum or a mixer drum connecting piece is rigidly fixed, for example, is screwed firmly by bolts. The said mounting flange can in this case, for example, placed in the manner of a tire on the gear housing and fixed there rigidly, for example, welded or screwed. In a further development of the invention, the mounting flange is preferably integrally formed on the gear housing.

Die rahmenseitigen Lagermittel, mittels derer der Mischerantrieb am Mischerrahmen bezüglich der Antriebsdrehachse drehfest, jedoch in einer Kippbewegungen quer hierzu zulassender Weise gelagert ist, greifen vorteilhafterweise an einer Lagerstelle des Mischerantriebs an, die im Bereich des Antriebsteils, insbesondere des Hydromotors des Mischerantriebs liegt. Vorzugsweise kann die genannte rahmenseitige Lagerstelle des Mischerantriebs etwa mittig zur axialen Erstreckung eines Motorkorpus des Mischerantriebs liegen.The frame-side bearing means, by means of which the mixer drive on the mixer frame with respect to the drive axis of rotation rotatably, but stored in a tilting transversely permitting manner, advantageously engage at a bearing point of the mixer drive, which is in the range of the drive part, in particular the hydraulic motor of the mixer drive. Preferably, said frame-side bearing point of the mixer drive can be approximately centrally to the axial extension of a motor body of the mixer drive.

Dementsprechend sind also die Lagerstellen des Mischerantriebs, nämlich die rahmenseitige Lagerstelle einerseits und die mischertrommelseitige Lagerstelle andererseits, zusammengefahren, so dass sich insgesamt günstige Verhältnisse bezüglich des Kraftflusses und der Ableitung der Lagerkräfte ergeben. Zudem wird eine besonders kompakte Bauweise erreicht, die sich durch geringen axialen Platzbedarf auszeichnet.Accordingly, therefore, the bearings of the mixer drive, namely the frame-side bearing on the one hand and the mixer drum side bearing on the other hand, together, so that overall favorable conditions with respect to the power flow and the derivative of the bearing forces arise. In addition, a particularly compact design is achieved, which is characterized by low axial space requirement.

Die vorgenannten Lagermittel zur beweglichen, Kippbewegungen zulassenden Lagerung des Mischerantriebs an dem Mischerrahmen sind dabei vorteilhafterweise elastisch und bewegungsdämpfend, insbesondere gummielastisch ausgebildet, so dass nicht nur Verwindungen und Fluchtungsfehler zwischen Rahmenteil und Mischertrommel kompensiert, sondern auch dynamische Lagerkräfte in günstiger Weise abgefangen und unerwünschte Schwingungen vermindert werden können. Die Lagermittel umfassen dabei insbesondere zumindest ein gummielastisches Lagerelement, durch das der Mischerantrieb am Mischerrahmenteil befestigt ist.The aforementioned storage means for movable, tilting movements permitting storage of the mixer drive to the mixer frame are advantageously elastic and motion damping, in particular rubber-elastic, so that not only compensates twisting and misalignment between the frame part and mixer drum, but also intercepted dynamic bearing forces in a favorable manner and reduces unwanted vibrations can be. The bearing means comprise in particular at least one rubber-elastic bearing element, by which the mixer drive is secured to the mixer frame part.

In Weiterbildung der Erfindung ist das zumindest eine Gummilagerelement dabei derart eingebaut und/oder ausgebildet, dass das Gummilagerelement keine Zugbeanspruchungen erfährt, sondern stets nur auf Druck und/oder Scherung beansprucht wird. Insbesondere kann das Gummilagerelement unter einer ausreichend starken Vorspannung eingebaut sein, die das Auftreten von Zugbeanspruchungen des Gummilagerelements verhindern.In a further development of the invention, the at least one rubber bearing element is installed and / or formed in such a way that the rubber bearing element experiences no tensile stresses, but is always claimed only on pressure and / or shear. In particular, the rubber bearing member may be installed under a sufficiently strong bias, which prevent the occurrence of tensile stresses of the rubber bearing member.

Das Lagerelement braucht dabei nicht zwangsweise ein Gummilagerelement sein, es kann auch ein entsprechende Eigenschaften aufweisendes Kunststofflagerelement oder ein Lagerelement aus einem anderen Material vorgesehen sein, welches die gewünschten elastischen und/oder schwingungsdämpfenden Eigenschaften aufweist.The bearing element need not necessarily be a rubber bearing element, it may also be provided with a corresponding properties exhibiting plastic bearing element or a bearing element made of a different material, which has the desired elastic and / or vibration damping properties.

Die Lagermittel zur beweglichen, Kippbewegungen zulassenden Lagerung des Mischerantriebs am Rahmen können dabei grundsätzlich hinsichtlich ihres Aufbaus verschieden ausgebildet sein. Nach einer vorteilhaften Ausführung der Erfindung kann ein Lagerring vorgesehen sein, in dem ein vorzugsweise zylindrisches und/oder ringförmiges Lagerinnenteil sitzt derart, dass das Lagerinnenteil gegenüber dem Lagerring bezüglich der Drehachse des Antriebs drehfest gehalten ist, sich jedoch gegenüber dem Lagerring bewegen kann, und zwar insbesondere in Form von Kippbewegungen um eine zur Drehachse des Mischerantriebs und/oder der Mischertrommel querverlaufenden Kippachse, wobei die Beweglichkeit vorteilhafterweise derart ausgebildet ist, dass Kippbewegungen um eine Vielzahl von Kippachsen, die in einer zur Mischertrommeldrehachse senkrechten Ebene liegen, möglich sind.The bearing means for the movable, tilting movements permitting mounting of the mixer drive on the frame can basically be designed differently with respect to their structure. According to an advantageous embodiment of the invention, a bearing ring may be provided in which a preferably cylindrical and / or annular bearing inner part is seated such that the bearing inner part opposite the bearing ring is rotatably held with respect to the axis of rotation of the drive, but can move relative to the bearing ring, in particular in the form of tilting about a pivot axis of the mixer drive and / or the mixer drum transverse tilt axis, wherein the mobility is advantageously designed such that tilting movements around a plurality of tilting axes, which are in a plane perpendicular to the mixer drum rotation axis, are possible.

In Weiterbildung der Erfindung ist dabei zwischen dem genannten Lagerring und dem darin sitzenden Lagerinnenteil zumindest ein elastisches Lagerelement, vorzugsweise ein Gummilagerelement, vorgesehen, durch das der Lagerring und der Lagerinnenteil beweglich zueinander gehalten sind. In Weiterbildung der Erfindung können dabei zwischen dem Lagerring und dem darin sitzenden Lagerinnenteil mehrere elastische Lagerelemente aufeinander geschichtet sein, wobei zwischen den einzelnen Lagerelementen ringförmige Zwischenstücke vorgesehen sein können.In a further development of the invention, at least one elastic bearing element, preferably a rubber bearing element, is provided between said bearing ring and the bearing inner part seated therein, by which the bearing ring and the bearing inner part are held movably relative to one another. In a further development of the invention, a plurality of elastic bearing elements can be stacked on top of each other between the bearing ring and the bearing inner part seated therein, wherein annular intermediate pieces can be provided between the individual bearing elements.

Der genannte Lagerring braucht dabei nicht zwangsweise die Form eines geschlossenen Ringes besitzen, es kann auch ein Lagerring in Form eines Ringsegments nach Art eines halbring- oder dreiviertelringförmigen Lagerbetts oder einer Lagergabel vorgesehen sein. Vorzugsweise jedoch ist ein vollumfänglicher Lagerring vorgesehen, in dem das Lagerinnenteil vollumfänglich umschlossen sitzt. Das Lagerinnenteil ist hierbei vorteilhafterweise etwa zylindrisch und insbesondere ebenfalls ringförmig ausgebildet, wobei die Mantelaußenseite des Lagerinnenteils ballig gewölbt sein kann.The said bearing ring need not necessarily have the form of a closed ring, it may also be provided a bearing ring in the form of a ring segment in the manner of a half-ring or three-quarter annular bearing bed or a storage fork. Preferably, however, a full bearing ring is provided, in which the bearing inner part is fully enclosed. The bearing inner part here is advantageously approximately cylindrical and in particular also annular, wherein the outer shell side of the bearing inner part may be curved crowned.

In Weiterbildung der Erfindung umschließt der Lagerring ein den Antriebsteil des Mischerantriebs, insbesondere dessen Hydromotor, umgebendes Gehäuseteil, an dem das vorgenannte Lagerinnenteil vorgesehen ist. Das Lagerinnenteil kann hierbei als separates Bauteil ausgebildet und an dem Gehäuseteil starr befestigt sein. Alternativ kann das Lagerinnenteil auch unmittelbar an dem Gehäuseteil integral ausgebildet sein.In a further development of the invention, the bearing ring surrounds a housing part surrounding the drive part of the mixer drive, in particular its hydraulic motor, on which the aforementioned bearing inner part is provided. The bearing inner part can in this case be formed as a separate component and rigidly secured to the housing part. Alternatively, the bearing inner part can also be formed integrally directly on the housing part.

Der das genannte Gehäuseteil umgebende Lagerring kann an dem Mischerrahmenteil starr befestigt sein, beispielsweise durch Schraubbolzen angeschraubt sein.The bearing ring surrounding the said housing part can be rigidly fastened to the mixer frame part, for example screwed by screw bolts.

Das die Mischertrommel tragende Getriebegehäuse kann grundsätzlich verschieden aufgebaut sein. Nach einer vorteilhaften Ausführung der Erfindung besitzt das Getriebegehäuse einen mit der Mischertrommel verbundenen Mantelflächenteil, der drehbar an einem Gehäuseanschlussteil gelagert ist, der durch die vorgenannten Lagermittel am Mischerrahmen abgestützt ist. Das Gehäuseanschlussstück kann hierbei vorteilhafterweise den Antriebsteils des Mischerantriebs, insbesondere dessen Motorkorpus, umgeben und/oder ein Gehäuseteil für diesen Antriebsteil bilden.The gear housing carrying the mixer drum can basically be constructed differently. According to an advantageous embodiment of the invention, the gear housing has a shell surface part connected to the mixer drum, which is rotatably mounted on a housing connecting part, which is supported by the aforementioned bearing means on the mixer frame. The housing connection piece can in this case advantageously surround the drive part of the mixer drive, in particular its motor body, and / or form a housing part for this drive part.

Um eine einfache Wartung des Motors des Mischerantriebs und eine gute Zugänglichkeit hierzu zu ermöglichen, kann in vorteilhafter Weise das den Antriebsteil umgebende Gehäuseanschlussstück eine Aufnahmekammer bilden, in die der Antriebsteil, insbesondere der Motor des Mischerantriebs, stirnseitig nach Art eines separaten Moduls einsetzbar ist. Dementsprechend braucht der Motor lediglich axial auf das Getriebe aufgeschoben werden, wobei er umgekehrt auch in einfacher Weise demontiert werden kann. Vorzugsweise ist hierzu zwischen der Motorwelle und der Getriebeeingangswelle eine durch Axialbewegung schließbare und lösbare Kupplung vorgesehen.In order to enable easy maintenance of the motor of the mixer drive and good accessibility, the housing connecting piece surrounding the drive part can advantageously form a receiving chamber into which the drive part, in particular the motor of the mixer drive, can be inserted in the manner of a separate module. Accordingly, the engine need only be pushed axially onto the transmission, and vice versa, it can be disassembled in a simple manner. For this purpose, a clutch that can be closed and released by axial movement is preferably provided between the motor shaft and the transmission input shaft.

Um eine Überbeanspruchung der beweglichen Lagermittel zur Lagerung des Mischerantriebs durch übergroße Verwindungen zu vermeiden, ist in vorteilhafter Weiterbildung der Erfindung die Beweglichkeit der Mischerantriebslagerung begrenzt. Hierzu kann ein Anschlag vorgesehen sein, der eine Verkippung des Mischerantriebs gegenüber dem Mischerrahmen begrenzt. Der Anschlag kann dabei grundsätzlich in verschiedener Weise ausgebildet sein. Nach einer vorteilhaften Ausführung der Erfindung kann der Anschlag ein von dem Lagerring gebildetes Anschlagteil sowie ein von dem Getriebegehäuse gebildetes oder damit verbundenes Anschlagteil umfassen, die bei Erreichen einer vorbestimmten Größe der Kippbewegung aufeinanderfahren.To avoid overstressing the movable bearing means for mounting the mixer drive by oversized torsions, the mobility of the mixer drive bearing is limited in an advantageous embodiment of the invention. For this purpose, a stop may be provided which limits a tilting of the mixer drive relative to the mixer frame. The stop can basically be designed in various ways. According to an advantageous embodiment of the invention, the stop can form a stop part formed by the bearing ring as well as a stop part formed by or connected to the gear housing include, which approach each other when reaching a predetermined amount of tilting movement.

In Weiterbildung der Erfindung besitzt die bewegliche Lagerung des Mischerantriebs an dem Mischerrahmenteil eine Beweglichkeit in Form eines zugelassenen Winkelversatzes von mehr als 2° und vorzugsweise weniger als 10°. Vorteilhafterweise kann der zugelassene Winkelversatz zwischen 4° und 8°, insbesondere etwa 6° betragen, was einerseits eine ausreichende Kompensation von Rahmenverwindungen ermöglicht und andererseits eine Schwingungsproblematik durch übergroße Beweglichkeit verhindert.In a further development of the invention, the movable mounting of the mixer drive on the mixer frame part has a mobility in the form of an approved angular offset of more than 2 ° and preferably less than 10 °. Advantageously, the permitted angular offset between 4 ° and 8 °, in particular about 6 ° amount, which on the one hand allows a sufficient compensation of frame distortions and on the other hand prevents a vibration problem by excessive mobility.

Die Erfindung wird nachfolgend anhand eines bevorzugten Ausführungsbeispiels und zugehöriger Zeichnungen näher erläutert. In den Zeichnungen zeigen:

Fig. 1:
einen Längsschnitt durch den Mischerantrieb eines Fahrmischers und dessen Lagerung auf einem am Fahrwerksrahmen befestigten Rahmenbock,
Fig. 2:
einen Längsschnitt durch den Mischerantrieb und dessen Lagerung aus Fig. 1, wobei der Mischerantrieb gegenüber dem ihn lagernden Rahmenbock durch die Beweglichkeit der Lagerung verkippt ist, und
Fig. 3:
einen Längsschnitt durch einen herkömmlichen Mischerantrieb, bei dem das Getriebegehäuse starr am Lagerbock verschraubt und die Mischertrommel über einen auf einer Getriebeabtriebswelle sitzenden Trommelflansch befestigt ist.
The invention will be explained in more detail below with reference to a preferred embodiment and associated drawings. In the drawings show:
Fig. 1:
a longitudinal section through the mixer drive a truck mixer and its storage on a chassis frame fixed to the frame frame,
Fig. 2:
a longitudinal section through the mixer drive and its storage Fig. 1 , wherein the mixer drive is tilted with respect to the bearing frame him by the mobility of the storage, and
3:
a longitudinal section through a conventional mixer drive, in which the transmission housing rigidly bolted to the bearing block and the mixer drum is attached via a seated on a transmission output shaft drum flange.

Der in den Figuren 1 und 2 gezeigte Mischerantrieb 1 sitzt über eine Mischerlagerung 2 auf einem Lagerbock 3, der mit dem Fahrwerksrahmen 4 eines im Übrigen nicht dargestellten Fahrmischers gelagert ist. Der Fahrmischer umfasst dabei in an sich bekannter Weise ein mehrachsiges Fahrwerk mit entsprechenden Rädern, das den genannten Fahrwerksrahmen 4 trägt, auf dem in ebenfalls an sich bekannter Weise eine Fahrerkabine angeordnet ist, hinter der der Mischerantrieb und die davon angetriebene Mischertrommel 5 liegen.The in the FIGS. 1 and 2 shown mixer drive 1 sits on a mixer bearing 2 on a bearing block 3, which is mounted with the chassis frame 4 of a driving mixer, not shown, moreover. The truck mixer comprises in a conventional manner a multi-axle chassis with corresponding wheels, which carries the said chassis frame 4, on which in also known per se A driver's cab is arranged, behind which the mixer drive and driven therefrom mixer drum 5 lie.

Wie Figur 1 zeigt, umfasst der Mischerantrieb 1 einen Antriebsteil 6 zur Erzeugung einer rotatorischen Antriebsbewegung sowie ein Antriebsgetriebe 7, das eingangsseitig von dem genannten Antriebsteil 6 angetrieben wird und ausgangsseitig die Mischertrommel 5 rotatorisch antreibt. In der gezeichneten Ausführung ist das Antriebsgetriebe 7 als zweistufiges Planetengetriebe ausgebildet, dessen Sonnenrad der ersten Stufe über die Eingangswelle 8 von dem Antriebsteil 6 her angetrieben wird.As FIG. 1 shows, the mixer drive 1 comprises a drive part 6 for generating a rotary drive movement and a drive gear 7, which is driven on the input side of said drive part 6 and the output side rotatably drives the mixer drum 5. In the illustrated embodiment, the drive gear 7 is formed as a two-stage planetary gear, the sun gear of the first stage is driven via the input shaft 8 of the drive member 6 ago.

In der gezeichneten Ausführung umfasst das Antriebsteil 6 einen Hydromotor 9 in Form eines hydraulischen Axialkolbenmotors, dessen Antriebswelle 10 mit der Eingangswelle 8 des Antriebsgetriebes 7 drehfest kuppelbar ist. Der Antriebsteil 6 sitzt dabei stirnseitig an dem Antriebsgetriebe 7, vgl. Figur 1.In the illustrated embodiment, the drive part 6 comprises a hydraulic motor 9 in the form of a hydraulic axial piston motor, the drive shaft 10 with the input shaft 8 of the drive gear 7 is rotatably coupled. The drive member 6 is seated frontally on the drive gear 7, see. FIG. 1 ,

Wie Figur 1 zeigt, umfasst das Antriebsgetriebe 7 ein Gehäuse 11, das einen Mantelflächenteil 12 umfasst, der die Getriebestufen des Planetengetriebes umfangsseitig umgibt. An dem Mantelflächenteil 12 ist etwa axial mittig ein radial vorspringender Trommelflansch 13 vorgesehen, an dem die Mischertrommel 5, welche in Figur 1 nur angedeutet ist, durch Schraubbolzen 14 starr befestigbar ist. Der besagte Trommelflansch 13 ist dabei von der der Mischertrommel 5 zugewandten Stirnseite 15 des Antriebsgetriebes 7 zum Antriebsteil 6 hin zurückversetzt, vgl. Figur 1, so dass das Antriebsgetriebe 7 bzw. dessen Getriebegehäuse 11 zur Mischertrommel 5 hin vorspringt.As FIG. 1 shows, the drive gear 7 comprises a housing 11 which includes a lateral surface portion 12 which circumferentially surrounds the gear stages of the planetary gear. On the lateral surface part 12, a radially projecting drum flange 13 is provided approximately axially in the middle, on which the mixer drum 5, which in FIG. 1 only indicated, by bolts 14 is rigidly fastened. The said drum flange 13 is set back from the mixer drum 5 facing end face 15 of the drive gear 7 to the drive part 6 out, see. FIG. 1 , so that the drive gear 7 or its gear housing 11 projects toward the mixer drum 5.

Der Mantelflächenteil 12 des Getriebegehäuses 11 ist dabei durch ein Wälzlager 16 drehbar an einem Gehäuseanschlussteil 17 gelagert, das einerseits das Antriebsgetriebe 7 stirnseitig abdeckt und andererseits eine Aufnahmekammer 18 begrenzt, in die der Hydromotor 9 des Antriebsteils 6 stirnseitig eingesetzt ist, vgl. Figur 1. Hierdurch kann der Hydromotor 9 nach Art eines separaten Moduls einfach an das Antriebsgetriebe 7 angesetzt bzw. in das Gehäuseanschlussteil 17 eingesetzt werden, indem es durch Schraubbolzen 19 befestigt ist.The lateral surface part 12 of the gear housing 11 is rotatably supported by a roller bearing 16 on a housing connection part 17, on the one hand the drive gear 7 covers the front side and on the other hand limits a receiving chamber 18, in which the hydraulic motor 9 of the drive member 6 is inserted end face, see. FIG. 1 , This allows the hydraulic motor 9 in the manner of a separate module simply to the Drive gear 7 attached or used in the housing connector 17 by being secured by bolts 19.

Der Gehäuseanschlussteil 17 ist durch die Mischerlagerung 2 drehfest bezüglich der Motordrehachse, jedoch kippbar um hierzu quer verlaufende Kippachsen an dem Lagerbock 3 des Fahrwerksrahmens 4 gelagert. Die Kippbarkeit des Mischerantriebs 1 ist dabei nach Art eines Kugelgelenks in alle Richtungen gegeben, d.h. die Kippbarkeit kann um mehrere in einer zur Zeichenebene der Figur 1 senkrechten Ebene verlaufende Kippachsen erfolgen. Figur 2 zeigt eine verkippte Lage, wobei der maximale Kippwinkel 6° eingezeichnet ist.The housing connecting part 17 is rotatably supported by the mixer bearing 2 with respect to the motor axis of rotation, but tiltable about this transverse transverse axes mounted on the bearing block 3 of the chassis frame 4. The tiltability of the mixer drive 1 is given in the manner of a ball joint in all directions, ie the tiltability can by several in a plane to the FIG. 1 vertical plane extending tilt axes take place. FIG. 2 shows a tilted position, wherein the maximum tilt angle is plotted 6 °.

Die Mischerlagerung 2 umfasst hierbei beweglich ausgebildete, die Kippbewegungen quer zur Antriebsachse zulassende Lagermittel 20, die elastisch und dämpfend, insbesondere gummielastisch, ausgebildet sind.The mixer bearing 2 in this case comprises movably formed, the tilting movements transverse to the drive axis permitting bearing means 20 which are elastic and damping, in particular rubber-elastic, are formed.

In der gezeichneten Ausführungsform umfassen die Lagermittel 20 vorteilhafterweise mehrere elastische, deformierbare Lagerelemente 21, die insbesondere in Form von Gummilagerelementen ausgebildet sein können, durch die der Mischerantrieb 1 auf dem mit dem Fahrwerksrahmen 4 verbundenen Lagerbock 3 befestigt ist.In the illustrated embodiment, the bearing means 20 advantageously comprise a plurality of elastic, deformable bearing elements 21, which may be formed in particular in the form of rubber bearing elements by which the mixer drive 1 is mounted on the bearing block 3 connected to the chassis frame 4.

Vorteilhafterweise umfassen die Lagermittel 20 dabei einen Lagerring 22, in dem ein ebenfalls ringförmig ausgebildetes Lagerinnenteil 23 sitzt, das gegenüber dem Lagerring 22 verkippt werden kann. Dies wird durch die elastisch verformbaren Lagerelemente 21 ermöglicht, die zwischen dem Lagerring 22 und dem Lagerinnenteil 23 sitzen, vgl. Figur 1. Die Lagerelemente 21 können hierbei Ringschalensegmente bilden, vorzugsweise jedoch als Lagerringelemente ausgebildet sein und einen flachgedrückten, länglichen Querschnitt besitzen, vgl. Figur 1. In der gezeichneten Ausführung sitzen dabei mehrere ringförmige elastische Lagerelemente 21 übereinander bzw. ineinander, wobei die Lagerelemente 21 durch ebenfalls ringförmige Zwischenstücke 24 voneinander getrennt sind, vgl. Figur 1. Die elastischen, insbesondere gummielastischen Lagerelemente 21 sind dabei derart zwischen dem Lagerring 22 und dem Lagerinnenteil 23 vorgespannt, dass sie auch bei Verformungen, wie sie Figur 2 zeigt, nur auf Druck bzw. Scherung, nicht jedoch auf Zug beansprucht werden. Durch die elastischen Lagerelemente 21 sind der Lagerring 22 und das Lagerinnenteil 23 zueinander beweglich und insbesondere kippbar, wie dies Figur 2 zeigt, so dass die Lagermittel 20 insgesamt bzw. die Mischerlagerung 2 eine Beweglichkeit aufweist, die Kippbewegungen des Mischerantriebs 1 um nahezu beliebige Kippachsen quer zur Antriebsachse zulässt.Advantageously, the bearing means 20 thereby comprise a bearing ring 22 in which a likewise annular bearing inner part 23 is seated, which can be tilted relative to the bearing ring 22. This is made possible by the elastically deformable bearing elements 21, which sit between the bearing ring 22 and the bearing inner part 23, cf. FIG. 1 , The bearing elements 21 may in this case form annular shell segments, but preferably be designed as bearing ring elements and have a flattened, elongated cross section, see. FIG. 1 , In the illustrated embodiment, a plurality of annular elastic bearing elements 21 sit one above the other or into each other, wherein the bearing elements 21 are separated from each other by likewise annular spacers 24, cf. FIG. 1 , The elastic, in particular rubber-elastic bearing elements 21 are biased between the bearing ring 22 and the bearing inner part 23 in such a way that they also in deformations, as FIG. 2 shows, only on pressure or shear, but not claimed on train. By the elastic bearing elements 21 of the bearing ring 22 and the bearing inner part 23 are mutually movable and in particular tiltable, as FIG. 2 shows, so that the bearing means 20 in total or the mixer bearing 2 has a mobility that allows tilting movements of the mixer drive 1 to almost any tilting axes transverse to the drive axis.

Die Verkippbarkeit des Mischerantriebs 1 gegenüber dem Lagerbock 3 ist hierbei begrenzt durch einen Anschlag 25, der einerseits von einer Stirnseite des Lagerrings 22 und andererseits einem Abdeckring 26 gebildet wird, der den Lagerspalt zwischen dem Mantelflächenteil 12 des Getriebegehäuses 11 und dessen Gehäuseanschlussteil 17 abdeckt und an letzterem Gehäuseanschlussteil 17 befestigt ist.The tiltability of the mixer drive 1 relative to the bearing block 3 is limited by a stop 25 which is formed on the one hand by an end face of the bearing ring 22 and on the other hand, a cover 26 which covers the bearing gap between the lateral surface portion 12 of the gear housing 11 and the housing connector part 17 and the latter housing connection part 17 is attached.

Claims (15)

Baustoffmischer mit einer Mischertrommel (5), die von einem Mischerantrieb (1) rotatorisch antreibbar ist, wobei die Mischertrommel (5) an einem ihrer stirnseitigen Enden durch den Mischerantrieb (1) an einem Mischerrahmenteil (3, 4), insbesondere Fahrwerksrahmenteil (4), drehbar gelagert ist und der Mischerantrieb (1) einen Antriebsteil (6), insbesondere mit einem Hydromotor (9), und ein mit der Mischertrommel (5) verbundenes Antriebsgetriebe (7) aufweist, dadurch gekennzeichnet, dass der Mischerantrieb (1) durch bewegliche, Kippbewegungen zulassende Lagermittel (20) an dem Mischerrahmenteil (3, 4) beweglich gelagert ist und die Mischertrommel (5) am Getriebegehäuse (11) des Antriebsgetriebes (7) befestigt ist.Building materials mixer with a mixer drum (5) which is rotationally driven by a mixer drive (1), wherein the mixer drum (5) at one of its front ends by the mixer drive (1) on a mixer frame part (3, 4), in particular chassis frame part (4) , is rotatably mounted and the mixer drive (1) has a drive part (6), in particular with a hydraulic motor (9), and connected to the mixer drum (5) driving gear (7), characterized in that the mixer drive (1) by movable , Tilting movements permitting bearing means (20) on the mixer frame part (3, 4) is movably mounted and the mixer drum (5) on the transmission housing (11) of the drive gear (7) is fixed. Baustoffmischer nach dem vorhergehenden Anspruch, wobei die Lagermittel (20) zumindest ein elastisches und/oder bewegungsdämpfendes, insbesondere gummielastisches, Lagerelement (21) aufweisen, durch das der Mischerantrieb (1) am Mischerrahmenteil (3, 4) befestigt ist.Building material mixer according to the preceding claim, wherein the bearing means (20) at least one elastic and / or motion-damping, in particular rubber-elastic, bearing element (21) through which the mixer drive (1) on the mixer frame part (3, 4) is attached. Baustoffmischer nach einem der vorhergehenden Ansprüche, wobei die Mischertrommel (5) an einer Trommellagerstelle (27) des Getriebegehäuses (11) befestigt ist, die von der dem Antriebsteil (6) des Mischerantriebs (1) abgewandten Stirnseite des Antriebsgetriebes (7) zum genannten Antriebsteil (6) hin zurückversetzt ist derart, dass das Antriebsgetriebe (7) von der Trommellagerstelle (27) in die Mischertrommel (5) hinein und/oder zu der Mischertrommel (5) hin vorspringt.Building material mixer according to one of the preceding claims, wherein the mixer drum (5) is attached to a drum bearing point (27) of the gear housing (11) facing away from the drive part (6) of the mixer drive (1) end face of the drive gear (7) to said drive part (6) is set back so that the drive gear (7) from the drum bearing point (27) into the mixer drum (5) into and / or to the mixer drum (5) out projecting. Baustoffmischer nach einem der vorhergehenden Ansprüche, wobei das Getriebegehäuse (11) einen vorzugsweise integral angeformten Befestigungsflansch (13) aufweist, an dem die Mischertrommel (5) starr befestigt ist.Building material mixer according to one of the preceding claims, wherein the gear housing (11) has a preferably integrally formed mounting flange (13) on which the mixer drum (5) is rigidly fixed. Baustoffmischer nach einem der vorhergehenden Ansprüche, wobei das Getriebegehäuse (11) einen mit der Mischertrommel (5) verbundenen Mantelflächenteil (12) aufweist, der drehbar an einem Gehäuseanschlussteil (17) gelagert ist, der durch die Lagermittel (20) an dem Mischerrahmenteil (3, 4) abgestützt ist.Building material mixer according to one of the preceding claims, wherein the gear housing (11) has a lateral surface part (12) connected to the mixer drum (5), which is rotatably mounted on a housing connection part (17) which is fixed to the mixer frame part (3) by the bearing means (20) , 4) is supported. Baustoffmischer nach dem vorhergehenden Anspruch, wobei der Gehäuseanschlussteil (17) des Getriebegehäuses (11) den Antriebsteil (6) des Mischerantriebs (1) umgibt und/oder ein Gehäuseteil dieses Antriebsteils (6) bildet.Building material mixer according to the preceding claim, wherein the housing connecting part (17) of the gear housing (11) surrounds the drive part (6) of the mixer drive (1) and / or forms a housing part of this drive part (6). Baustoffmischer nach einem der beiden vorhergehenden Ansprüche, wobei der Gehäuseanschlussteil (17) des Getriebegehäuses (11) eine Aufnahmekammer (18) bildet, in die der Antriebsteil (6), insbesondere dessen Hydromotor (9), stirnseitig nach Art eines separaten Moduls einsetzbar ist.Building material mixer according to one of the two preceding claims, wherein the housing connecting part (17) of the gear housing (11) forms a receiving chamber (18) into which the drive part (6), in particular its hydraulic motor (9), the end face in the manner of a separate module can be used. Baustoffmischer nach einem der vorhergehenden Ansprüche, wobei die Lagermittel (20) zumindest ein Gummilagerelement aufweisen und derart ausgebildet sind, dass das Gummilagerelement (21) stets nur auf Druck und/oder Scherung beansprucht ist.Building material mixer according to one of the preceding claims, wherein the bearing means (20) have at least one rubber bearing element and formed in such a way are that the rubber bearing element (21) is always claimed only on pressure and / or shear. Baustoffmischer nach dem vorhergehenden Anspruch, wobei das Gummilagerelement (21) unter ausreichend starker Vorspannung eingebaut ist, die das Auftreten von Zugbeanspruchungen des Gummilagerelements (21) verhindern.Building material mixer according to the preceding claim, wherein the rubber bearing element (21) is installed under sufficiently strong bias, which prevent the occurrence of tensile stresses of the rubber bearing element (21). Baustoffmischer nach einem der vorhergehenden Ansprüche, wobei die Lagermittel (20) einen Lagerring (22) aufweisen, in dem ein vorzugsweise zylindrisches und/oder ringförmiges Lagerinnenteil (23) sitzt, wobei zwischen dem Lagerring (22) und dem Lagerinnenteil (23) zumindest ein elastisches Lagerelement (21), vorzugsweise Gummilagerelement, vorgesehen ist, durch das der Lagerring (22) und der Lagerinnenteil (23) beweglich zueinander gehalten sind.Building material mixer according to one of the preceding claims, wherein the bearing means (20) have a bearing ring (22) in which a preferably cylindrical and / or annular bearing inner part (23) sits, wherein between the bearing ring (22) and the bearing inner part (23) at least one elastic bearing element (21), preferably rubber bearing element, is provided, by which the bearing ring (22) and the bearing inner part (23) are held movable to each other. Baustoffmischer nach dem vorhergehenden Anspruch, wobei zwischen dem Lagerring (22) und dem Lagerinnenteil (23) mehrere vorzugsweise ringförmige elastische Lagerelemente (21) vorgesehen sind, die radial ineinander liegend angeordnet und/oder durch Zwischenstücke voneinander getrennt sind.Building material mixer according to the preceding claim, wherein between the bearing ring (22) and the bearing inner part (23) a plurality of preferably annular elastic bearing elements (21) are provided, which are arranged radially one inside the other and / or separated by spacers. Baustoffmischer nach einem der beiden vorhergehenden Ansprüche, wobei der Lagerring (22) ein den Antriebsteil (6) des Mischerantriebs (1) umgebendes Gehäuseteil (17) umschließt, an dem der Lagerinnenteil (23) befestigt oder ausgebildet ist, wobei der Lagerring (22) starr an dem Mischerrahmenteil (3, 4) befestigt ist.Building material mixer according to one of the two preceding claims, wherein the bearing ring (22) surrounds a housing part (17) surrounding the drive part (6) of the mixer drive (1), to which the bearing inner part (23) is fastened or formed, wherein the bearing ring (22) rigidly attached to the mixer frame part (3, 4). Baustoffmischer nach einem der vorhergehenden Ansprüche, wobei ein Anschlag (25) zur Begrenzung der Verkippung des Mischerantriebs (1) gegenüber dem Mischerrahmenteil (3, 4) vorgesehen ist.Building material mixer according to one of the preceding claims, wherein a stop (25) for limiting the tilting of the mixer drive (1) relative to the mixer frame part (3, 4) is provided. Baustoffmischer nach dem vorhergehenden Anspruch in Verbindung mit den Ansprüchen 5 und 10, wobei der Anschlag (25) ein von dem Lagerring (22) gebildetes Anschlagteil sowie ein von dem Getriebegehäuse (11), insbesondere dessen Gehäuseanschlussteil (17), gebildetes, mit dem Getriebegehäuse (11), insbesondere dessen Gehäuseanschlussteil (17), verbundenes Anschlagstück aufweist.Building material mixer according to the preceding claim in conjunction with claims 5 and 10, wherein the stop (25) formed by the bearing ring (22) stop member and one of the transmission housing (11), in particular its housing connection part (17), formed with the transmission housing (11), in particular its housing connecting part (17), connected stop piece. Baustoffmischer nach einem der vorhergehenden Ansprüche, wobei die Lagermittel (20) eine begrenzte Verkippbarkeit mit einem maximalen Kippwinkel aus der Neutralstellung heraus von mindestens 2° und maximal 15°, vorzugsweise mehr als 4° und weniger als 8°, insbesondere etwa 6°, besitzen.Building material mixer according to one of the preceding claims, wherein the bearing means (20) have a limited tiltability with a maximum tilt angle from the neutral position of at least 2 ° and at most 15 °, preferably more than 4 ° and less than 8 °, in particular about 6 ° ,
EP08006743.2A 2007-04-20 2008-04-02 Mixer for building materials Not-in-force EP1982811B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007018776A DE102007018776A1 (en) 2007-04-20 2007-04-20 construction material mixers

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EP1982811A2 true EP1982811A2 (en) 2008-10-22
EP1982811A3 EP1982811A3 (en) 2010-09-22
EP1982811B1 EP1982811B1 (en) 2013-06-12

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US (1) US8641262B2 (en)
EP (1) EP1982811B1 (en)
CN (1) CN101288982B (en)
AU (1) AU2008201718B2 (en)
CA (1) CA2628902C (en)
DE (1) DE102007018776A1 (en)
ES (1) ES2417136T3 (en)
RU (1) RU2376134C1 (en)

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ES2314924T3 (en) * 2005-06-10 2009-03-16 Zf Friedrichshafen Ag COMPENSATOR DEVICE FOR COMPENSATING AN ANGLE ERROR OF A MIXING DRUM.
DE202009015406U1 (en) * 2009-11-12 2011-04-07 Liebherr-Mischtechnik Gmbh Truck mixer
DE102010062948A1 (en) * 2010-12-13 2012-06-14 Zf Friedrichshafen Ag Gear mechanism for e.g. transport concrete mixer in construction site, has gear staying in drive connection with flange connected with drum, where reduction of translation of stage is balanced by upstream connection of other reduction stage
WO2016015864A1 (en) * 2014-08-01 2016-02-04 Pmp Pro-Mec S.P.A. Drive
CN104690834A (en) * 2015-03-11 2015-06-10 烟台金阳建筑工程机械有限公司 Portable type mobile concrete stirring device
DE102020118938B3 (en) * 2020-07-17 2021-07-29 OilQuick Deutschland KG Quick change system for changing attachments on a construction machine
CN112109203A (en) * 2020-09-25 2020-12-22 孙国花 Self-cleaning building slurry stirring equipment in field of building machinery

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Also Published As

Publication number Publication date
CA2628902C (en) 2012-03-20
RU2376134C1 (en) 2009-12-20
AU2008201718B2 (en) 2011-05-12
RU2008115414A (en) 2009-10-27
AU2008201718A1 (en) 2008-11-06
DE102007018776A1 (en) 2008-10-23
ES2417136T3 (en) 2013-08-06
CA2628902A1 (en) 2008-10-20
US8641262B2 (en) 2014-02-04
CN101288982A (en) 2008-10-22
EP1982811B1 (en) 2013-06-12
US20080291772A1 (en) 2008-11-27
CN101288982B (en) 2012-12-26
EP1982811A3 (en) 2010-09-22

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