EP2952311A1 - Dispositif destiné à mélanger le béton - Google Patents

Dispositif destiné à mélanger le béton Download PDF

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Publication number
EP2952311A1
EP2952311A1 EP15001592.3A EP15001592A EP2952311A1 EP 2952311 A1 EP2952311 A1 EP 2952311A1 EP 15001592 A EP15001592 A EP 15001592A EP 2952311 A1 EP2952311 A1 EP 2952311A1
Authority
EP
European Patent Office
Prior art keywords
mixing
rotation
tool
drive unit
rotor
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.)
Withdrawn
Application number
EP15001592.3A
Other languages
German (de)
English (en)
Inventor
Thomas Gerst
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.)
Ammann Elba Beton GmbH
Original Assignee
Ammann Elba Beton GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ammann Elba Beton GmbH filed Critical Ammann Elba Beton GmbH
Publication of EP2952311A1 publication Critical patent/EP2952311A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/16—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a vertical or steeply inclined axis
    • B28C5/166—Pan-type mixers
    • B28C5/168—Pan-type mixers with stirrers having planetary motion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/95—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers having planetary motion, i.e. rotating about their own axis and about a sun axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
    • B01F35/33—Transmissions; Means for modifying the speed or direction of rotation

Definitions

  • a largely homogeneous mixture of the main components cement, water, aggregates and additives should be achieved with the aid of a concrete mixer.
  • the first mixing tool for example, a so-called mixing star
  • the second mixing tool is a so-called swirler.
  • the greatest homogenization effect is achieved by the first mixing tool, the mixing star.
  • the second mixing tool, the whirler is mainly used in the homogenization process To prevent so-called dumpling, in which the materials clump together to clumps of material that can not be effectively split by the mixing star alone.
  • the object of the invention is to provide a device of the type mentioned, which allows for improved mixing of the mixed material in the mixing trough.
  • the rotational speed and / or the direction of rotation of the second mixing tool can be adapted and optimized to the ongoing mixing process and the condition and nature of the mixed material, whereby in particular the mentioned dumpling formation can be effectively minimized.
  • the mixing rotor can be driven particularly effectively by being connected to a rotatable ring of a pivot bearing, which also includes a stationary ring which is fixed to the housing console.
  • the drive shaft of the primary drive unit is coaxial with the axis of rotation of the mixing rotor.
  • the rotatable ring of the rotary bearing has a toothing and meshes with a drive pinion on a drive shaft of the primary drive unit.
  • the drive shaft of the primary drive unit for example, run parallel to the axis of rotation of the mixing rotor, whereby a central region of the mixing rotor remains free and may optionally be formed as a feed opening.
  • the housing console carries a toothed ring fixed to the housing with a toothing, with which a pinion meshes with a tool shaft of the first mixing tool. During the rotation of the mixing rotor this leads with the first mixing tool, which undergoes a forced rotation when circulating around the ring gear.
  • the housing console carries a stationary ring of a pivot bearing, which also comprises a rotatable ring with a toothing, with which a pinion on a tool shaft of the second mixing tool and a drive pinion of the secondary Combine drive unit.
  • the primary drive unit is a transmission unit which is coupled to the drive shaft of the primary drive unit and cooperates with a primary drive motor, the mixing rotor and the coupled therewith first mixing tool can be effectively driven.
  • the secondary drive unit is a direct drive without a gear unit, the knowledge is taken into account that the second mixing tool can be operated effectively even without an intermediate gear.
  • FIG. 1 designates a concrete mixer as a whole, which comprises a mixing trough 12 and a mixer unit 14 mounted on the mixing trough 12, which in FIG FIG. 2 shown in enlarged scale.
  • the mixer unit 14 comprises a stationary housing console 16, which is cylindrical in the present embodiment and has an upper, planar housing cover 18 and a circumferential housing wall 20. On the side remote from the housing cover 18 side, the housing console 16 is open.
  • the housing cover 18 of the housing console 16 has a central passage opening 22 about a central axis 24 of the housing console 16. Coaxial with the central axis 24 extends from the inside of the housing cover 18, a support cylinder 26 downwardly having a flange 28 at its free end.
  • the flange 28 carries a ring gear 30, which is thus fixed to the housing relative to the housing console 16 and thus mounted stationary.
  • the toothing 32 is an external toothing.
  • the inner circumferential surfaces of the support cylinder 26 and the sprocket 30 define a receiving space 34 with a circular cross-section.
  • a drive shaft 36 of a primary drive unit 38 projects into the receiving space 34 through the passage opening 22.
  • the drive shaft 36 is coupled to a gear unit 40 of the primary drive unit 38, which is flanged on the outside of the housing console 16 and in turn cooperates with a primary drive motor 42, which in FIG. 1 can be seen.
  • the primary drive motor 42 is a three-phase asynchronous motor.
  • the drive shaft 36 is rotatably connected via a connecting flange 44 with a mixing rotor 46, so that the mixing rotor 46 can be rotated by means of the primary drive unit 38 about the central axis 24, which consequently with respect to the Mixing rotor 46 is a rotation axis 24.
  • the mixing rotor 46 rotates relative to the housing console 16 and the associated ring gear 30th
  • the mixing rotor 46 has a base plate 48 and a circumferential wall 50 surrounding it, which delimit a rotor interior 52. At its edge remote from the base plate 48, the peripheral wall 50 carries a retaining flange 54.
  • the base plate 48 carries a cylinder wall 56 which extends coaxially to the central axis 24 through the rotor inner space 52 and protrudes on the opposite side on the retaining flange 54 on the peripheral wall 50.
  • the cylinder wall 56 thus surrounds the connecting flange 44 and the drive shaft 36.
  • the cylinder wall 56 extends at a small distance next to the inner circumferential surface of the support cylinder 26 and to just before the inner surface of the housing cover 18 of the housing console sixteenth
  • the retaining flange 54 On its side remote from the base plate 48, the retaining flange 54 carries on the peripheral wall 50 a rotatable ring 58a of a generally designated 58 pivot bearing, the stationary ring 58b fixed to the housing fixed to the housing wall 20 of the housing console 16.
  • the rotatable ring 58a is an inner ring and the stationary ring 58b is an outer ring.
  • the pivot bearing 58 may be formed, for example, as a rolling bearing or ball bearing.
  • the support cylinder 26 of the housing console 16 is also surrounded by a stationary ring 60 a of another rotary bearing 60 which is fixed to the housing on the inner surface of the housing cover 18.
  • the stationary ring 60a cooperates with a rotatable ring 60b of the pivot bearing 60, the has a toothing 61.
  • the stationary ring 60a is an inner ring
  • the rotatable ring 60b is an outer ring
  • its teeth 61 an outer toothing.
  • the pivot bearing 60 may be formed, for example, as a rolling or ball bearing.
  • the rotatable ring 60b of the rotary bearing 60 meshes with a drive pinion 62 supported by a drive shaft 64 of a secondary drive unit 66.
  • the drive shaft 64 defines an axis of rotation 68 and extends upward through a second passage opening 70 in the housing cover 18 of the housing console 16, where outside without a separate gear unit, a secondary drive motor 72 of the secondary drive unit 66 is flanged, which drives the drive shaft 64 directly.
  • the secondary drive motor 72 is also a dehistor asynchronous motor.
  • the drive shaft 64 thus corresponds to the engine output shaft.
  • the secondary drive unit 66 is formed as a direct drive.
  • the second through-opening 70 is correspondingly located radially outside next to the first through-opening 22.
  • the secondary drive unit 66 may also have a gear unit between the secondary drive motor 72 and the drive shaft 64.
  • the rotatable ring 60b of the pivot bearing 60 carries on its bottom facing the rotor interior 52 another, to coaxial and non-rotatable ring gear 74 with external teeth 76.
  • the secondary drive unit 66 consequently the ring gear 74 can be rotated relative to the housing console 16 about the central axis 24 ,
  • the mixing rotor base plate 48 with respect to the central axis 24 opposite to each other two connection passages 78 and 80, in each of which a pivot bearing 82 and, respectively, 84 for a first mixing tool 86 and a second mixing tool 88 is seated.
  • the first mixing tool 86 as a mixing star and the second mixing tool 88 are formed as swirler, as it is known per se.
  • the mixing rotor 46 leads in a likewise known manner with a not specifically provided with a reference broach with it, which moves along with the rotation of the mixing rotor 46 on the wall and optionally the bottom of the mixing trough 12 along and Abrasive there adhesive material as it goes along.
  • Each mixing tool 86, 88 has a tool shaft 90 and 92 which are parallel to the central axis 24 and each define a first tool axis of rotation 94 for the first mixing tool 86 and a second tool axis of rotation 96 for the second mixing tool 88, around which the respective Blending tool 86, 88 is rotatable in a rotational movement.
  • the tool shaft 90 of the first mixing tool 86 protrudes from below through the connection passage 78 into the rotor interior 52 and carries there a pinion 98, which meshes with the ring gear 30 on the housing console 16.
  • the tool shaft 92 of the second mixing tool 88 projects from below into the rotor interior 52 and carries there a pinion 100, which, however, meshes with the ring gear 74, which is carried by the rotatable ring 60 b of the pivot bearing 60.
  • the rotary shaft 92 of the second mixing tool 88 projects from below through the connection passage 80 into the rotor interior 52 and carries there a pinion 100, which, however, meshes with the ring gear 74 on the rotatable ring 60b of the pivot bearing 60.
  • the first mixing tool 86 and the second mixing tool 88 are moved in a circulating movement about the axis of rotation 24 of the mixing rotor 46.
  • the mixing rotor 46 is rotated about the central axis 24 with the aid of the first drive unit 66, the mixing tools 86 and 88 being carried by the mixing robot 46.
  • the first mixing tool 86 thereby rotates in a rotational movement about the tool rotation axis 94, since during the circulating movement of the mixing rotor 46, the pinion 98 of the first mixing tool 86 runs on the stationary ring gear 30 on the housing bracket 26. Both the rotational speed and the rotational direction of the rotational movement and the rotational speed and the direction of rotation of the rotational movement of the first mixing tool 66 are positively coupled in this manner with the rotational speed and the rotational direction of the rotational movement of the mixing rotor 46. The directions of rotation of the first mixing tool 86 and the mixing rotor 46 are the same.
  • the second mixing tool 88 can be rotated in a rotational movement about its tool axis of rotation 96.
  • the pinion 100 of the second mixing tool 88 extends from the ring gear 74, which in turn can be rotated by the second drive unit 66 about the central axis 24.
  • the rotational speed and the direction of rotation of the rotational movement of the second mixing tool 88 are decoupled from the rotational speed and the direction of rotation of the mixing rotor 46.
  • the rotational speed and / or the direction of rotation of the rotational movement of the second mixing tool 88 can thus be adjusted by means of the secondary drive unit 66 independently of the rotational speed and direction of rotation of the mixing rotor 46.
  • the second mixing tool 88 can be rotated at an individual speed and rotational direction about the tool rotation axis 96, which are independent of the rotational speed and the direction of rotation of the mixing rotor 46.
  • the direction of rotation may be the same as that of the mixing rotor 46 or its direction of rotation may be opposite.
  • a relative to the central axis 24 quasi geostationary orbital motion of the second mixing tool 88 is possible.
  • the rotational speed and direction of rotation of this orbital movement of the second mixing tool 88 is also forcibly coupled to the rotational speed and the direction of rotation of the rotational movement of the mixing rotor 46.
  • FIGS. 1 and 2 Now show as a second embodiment, a concrete mixer 10 ', wherein components which are already functional to the FIGS. 1 and 2 correspond explained components bear the same reference numerals.
  • the rotatable ring 58a of the pivot bearing 58 has a toothing 102, which is correspondingly an internal toothing in the present embodiment.
  • This meshes with a drive pinion 104 at the end of the drive shaft 36 of the primary drive unit 38, which extends for this purpose through a relative to the central axis 24 eccentric passage opening 106 in the housing cover 18 of the housing console 16 therethrough.
  • this passage opening 106 is arranged relative to the center axis 24 opposite the passage opening 70 for the second drive unit 66.
  • the eccentric through hole 106 may be positioned elsewhere as long as the Pinion 104 meshes with the toothing 102 on the rotatable ring 58a of the rotary bearing 58.
  • the drive shaft 36 here has an axis of rotation 108 which runs parallel to the axis of rotation 24 of the mixing rotor 46.
  • both concrete mixers 10, 10 communicate the primary drive unit 38 and the secondary drive unit 66 with a controller 110, the only in the FIGS. 1 and 3 is illustrated and by means of which the rotational speeds and directions of rotation of the primary drive motor 42 and the secondary drive motor 72 can be set independently.
  • the primary drive unit 38 and the secondary drive unit 66 or the controller 110 are equipped in a manner known per se with frequency converters, which are not shown here specifically.
  • the rotational speeds and directions of rotation of the drive units 38 and 66 can thus be adapted to the requirements of the mixing process.
  • the frequency converters for driving the three-phase asynchronous motors affect both the frequency and the amplitude of a provided AC voltage, whereby the direction of rotation, the rotational speed and the torque of the drive motors 42 and 72 set in a wide range can be.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP15001592.3A 2014-05-27 2015-05-27 Dispositif destiné à mélanger le béton Withdrawn EP2952311A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014008067.6A DE102014008067A1 (de) 2014-05-27 2014-05-27 Vorrichtung zum Mischen von Beton

Publications (1)

Publication Number Publication Date
EP2952311A1 true EP2952311A1 (fr) 2015-12-09

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EP15001592.3A Withdrawn EP2952311A1 (fr) 2014-05-27 2015-05-27 Dispositif destiné à mélanger le béton

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EP (1) EP2952311A1 (fr)
DE (1) DE102014008067A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202016001859U1 (de) * 2016-03-21 2017-06-22 Liebherr-Mischtechnik Gmbh Mischer
FR3079770B1 (fr) * 2018-04-09 2020-03-27 Skako Concrete Appareil de malaxage pour materiaux humides ou secs, notamment de composants pour la fabrication de beton
CN108527657B (zh) * 2018-04-19 2020-03-24 重庆市长寿区分素装饰工程有限责任公司 玻化微珠保温砂浆搅拌装置
DE202019001793U1 (de) 2019-04-24 2019-06-04 Manuel Graßl Mischvorrichtung für ein Kalorimeter
DE102020201957A1 (de) * 2020-02-17 2021-08-19 Scanlab Gmbh Galvanometerantrieb mit spielfreier Lagerung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2738875Y (zh) * 2004-08-30 2005-11-09 成都硅宝科技实业有限责任公司 高速行星乳化搅拌装置
DE102008060588A1 (de) * 2007-12-07 2009-06-10 Pemat Mischtechnik Gmbh Mischer
DE102008033644A1 (de) * 2008-07-17 2010-01-21 Elba-Werk Maschinen-Gesellschaft Mbh Vorrichtung und Verfahren zum Mischen von Beton

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3823326A1 (de) * 1988-07-09 1990-01-11 Janke & Kunkel Kg Antriebseinheit fuer eine ruehr- und/oder knetmaschine
DE202010003100U1 (de) * 2010-03-03 2010-05-12 Mat Mischanlagentechnik Gmbh Kolloidalmischer, insbesondere zur Aufbereitung von Baustoffen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2738875Y (zh) * 2004-08-30 2005-11-09 成都硅宝科技实业有限责任公司 高速行星乳化搅拌装置
DE102008060588A1 (de) * 2007-12-07 2009-06-10 Pemat Mischtechnik Gmbh Mischer
DE102008033644A1 (de) * 2008-07-17 2010-01-21 Elba-Werk Maschinen-Gesellschaft Mbh Vorrichtung und Verfahren zum Mischen von Beton

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DE102014008067A1 (de) 2015-12-03

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