EP2799619A2 - Réservoir de mélange et de réserve et procédé d'homogénéisation de matériau dans un tel réservoir de mélange et de réserve - Google Patents

Réservoir de mélange et de réserve et procédé d'homogénéisation de matériau dans un tel réservoir de mélange et de réserve Download PDF

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Publication number
EP2799619A2
EP2799619A2 EP14401039.4A EP14401039A EP2799619A2 EP 2799619 A2 EP2799619 A2 EP 2799619A2 EP 14401039 A EP14401039 A EP 14401039A EP 2799619 A2 EP2799619 A2 EP 2799619A2
Authority
EP
European Patent Office
Prior art keywords
mixing
storage container
screw
screw conveyor
section openings
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Withdrawn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
EP14401039.4A
Other languages
German (de)
English (en)
Other versions
EP2799619A3 (fr
Inventor
Cord Nottmeier
Michael Lehmann-Pottkämper
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.)
Astec Mobile Machinery GmbH
Original Assignee
Astec Mobile Machinery 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 Astec Mobile Machinery GmbH filed Critical Astec Mobile Machinery GmbH
Publication of EP2799619A2 publication Critical patent/EP2799619A2/fr
Publication of EP2799619A3 publication Critical patent/EP2799619A3/fr
Withdrawn legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C2019/2055—Details not otherwise provided for
    • E01C2019/207—Feeding the distribution means
    • E01C2019/2075—Feeding the distribution means with longitudinal conveyor belt
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C2019/2055—Details not otherwise provided for
    • E01C2019/207—Feeding the distribution means
    • E01C2019/209—Feeding the distribution means with transverse auger

Definitions

  • the invention relates to a mixing reservoir for a paver, wherein the mixing reservoir comprises a screw conveyor and a, in particular single, storage space with a filling opening and a discharge opening. Furthermore, the invention relates to a paver with a distribution screw and a transport device for conveying the material from a transfer area to the auger. The invention also relates to a method for homogenizing in particular pourable material in a mixing reservoir and / or a paver.
  • the mixing reservoir serves to remix and homogenize the material to be processed after the manufacturing process in the factory and the subsequent transport to the site, just before it is installed with a paver. Since the material was possibly segregated in the upstream work processes or cooled unevenly during transport or in the mixing reservoir, the installation quality can be improved by the targeted subsequent mixing in the mixing reservoir.
  • the processed material is free-flowing, for example, sand, gravel, asphalt, concrete or cement and / or bitumen-enriched mixed materials or recycling materials.
  • the document teaches DE 2 135 957 A a heatable storage tank.
  • the arranged between the reservoir and the auger conveyor may consist of at least two screw conveyors. The screw conveyors prevent segregation of the material during transport from the storage container to the distributor screw.
  • a storage container with at least one screw conveyor, which is arranged between the storage space and the conveyor, is inter alia from the documents US 5,533,829 A and US Pat. No. 7,160,056 B1 known.
  • the present invention has for its object to provide an alternative way to the prior art, to facilitate the installation of bulk materials and to improve the quality of installation.
  • a mixing reservoir in whose reservoir a plurality of guide elements are arranged, through which the removal opening is divided into a plurality of section openings.
  • This makes it possible to simultaneously remove material from different areas of the storage room. Since material cools faster in the outer regions than in the interior of the storage space, it is possible, for example, when processing temperature-sensitive materials such as asphalt to bring together the different tempered materials.
  • the material from the different areas of the storage space is mixed to form a homogeneous mixture. Even materials whose processing is independent of a particular temperature, can by the use of the invention Mixing reservoir can be installed in higher quality.
  • Bulk solids with different grain sizes are often separated by vibrations during transport and especially in the storage room of a built-in appliance. By removing the material from different areas of the storage space, these can be mixed again and thus provided a homogeneous material for installation.
  • the material leaving the discharge opening is also called mixed material.
  • the mixing reservoir according to the invention is arranged on a paver.
  • a mixed storage container usually has a larger volume than the storage space of a road finisher, so that a mixing reservoir, which is also set in the reservoir, also referred to as a bunker, can hold a larger amount of material ready. This leaves more time for the tracking of additional material, which facilitates installation.
  • a homogenizer arranged on the paver, inventive mixing reservoir the material homogenized with the mixing reservoir. As a result, a new separation is almost impossible.
  • a mixed storage container can also be installed on a separate, independent of a paver vehicle, the material of this, for example, used as a mixing container vehicle, passes through conveyor to the paver. It is also also possible to install the mixing reservoir according to the invention fixed, for example in the field of loading in a mine or quarry or for an optionally temporarily erected precast plant.
  • the material would be unevenly removed from the storage space, wherein initially in the vicinity of the removal opening, usually in the middle of the storage room, positioned material and then only the more distant material is led out through the removal opening from the storage space.
  • the removal opening is divided into four or preferably more section openings by means of the guide elements. This classification represents a suitable compromise.
  • a high number of section openings can only be realized with many guide elements, which significantly increases the mass of the mixing reservoir and its production costs.
  • the mixing reservoir has more than four and less than twenty section openings, preferably over eight to twelve section openings.
  • the mixing reservoir has a mixing space in which the screw conveyor is arranged and which is arranged on a side facing away from the storage space of the section openings.
  • the material from the different areas of the storage room is brought together and mixed.
  • the mixing of the material in the mixing chamber is further improved by the optionally provided screw conveyor.
  • the screw conveyor is preferably positioned in the mixing chamber so that it covers all section openings. Thus, the transported through all section openings material can be mixed and homogenized by the screw conveyor.
  • the drive of the screw conveyor is preferably carried out hydraulically.
  • an electric or mechanical drive is possible.
  • the mixing reservoir can be equipped with its own motor to generate the required kinetic energy.
  • the mixing reservoir has a screw conveyor.
  • embodiments of the mixing reservoir with a plurality of screw conveyors are also possible. With several screw conveyors they can rotate in the same direction or in opposite directions.
  • a development of the invention is designed such that at least one of the guide elements is designed as a cover of the mixing space or the screw conveyor. Due to the partial covering of the screw conveyor, the material of the section openings adjacent to this cover can be better distributed in the mixing space, which facilitates the homogenization of the material in the mixing space.
  • At least one aperture is arranged on at least one of the section openings, by means of which the opening width of this at least one of the section openings is adjustable.
  • the mixing reservoir can be adapted to the current task and / or the material to be processed.
  • the panels are also called metering slides.
  • the aperture is releasably fixed by fastening means to the mixing reservoir.
  • fastening means may for example be a screw connection.
  • the diaphragm is designed to be adjustable by means of an actuator.
  • the actuator allows at any time an adjustment of the opening width.
  • the actuating device is driven by a motor and controlled manually or automatically by a control panel.
  • the actuating device is set up for a mechanical and / or hydraulic adjustment of the diaphragms.
  • the mixing reservoir has steep walls with an inclination 45 ° to 90 °, preferably from 60 ° to 90 ° relative to the street level.
  • the mixing reservoir is also free of dead spaces. This ensures that no material remains in the mixing reservoir.
  • the storage space of the mixing reservoir has a height extending between the filling opening and the discharge opening. It is favorable that the guide elements are maximally up to a third of this height extending into the storage space. As a result, a uniform filling of the storage space and a uniform lowering of the material level is achieved in the removal of material.
  • the mixing reservoir according to the invention thus a uniform grain distribution, a uniform temperature, in particular without cold spots, or a uniform distribution of the adhesive parts in the mix is achieved.
  • the mixed storage tank serves as a material buffer, so that the paver can drive continuously without stopping.
  • starting and stopping absences are avoided in the road surface to be installed and increases the installation performance.
  • the paving quality of the road surface is substantially increased with the mixing reservoir according to the invention over the prior art.
  • the configuration of the screw conveyor the subdivision of the removal opening into a plurality of section openings and in particular the differing in their size opening cross sections of the section openings allow to achieve a uniformly falling material level in the mixing reservoir during removal of the material through the removal opening.
  • a mixing reservoir or several mixing reservoir according to the invention can be arranged on a road paver.
  • the mix from the respective mixing storage containers is preferably deposited in layers on the transport device.
  • Several mixed storage containers it also corresponds when several completely separate storage rooms are realized in a non-destructible non-divisible device.
  • a paver with a distribution screw and a transport device for conveying the material from a transfer area to the auger in which a mixing reservoir is arranged in the transfer area above the transport device, wherein the mixing reservoir designed according to one or more of the features listed above is.
  • the screw conveyor is oriented parallel or transversely to the production direction.
  • the at least one mixing reservoir or the at least one screw conveyor is oriented transversely to a vertical plane in which the production direction lies.
  • the mixing reservoir or the screw conveyor can also be oriented parallel to a vertical plane in which the production direction lies.
  • a particular embodiment of the invention is that the screw conveyor is oriented parallel to the street level.
  • the screw conveyor to the street level on an angle of attack which is aligned in particular in the direction of manufacture or to the transfer area towards rising.
  • an embodiment is possible in which the screw conveyor is oriented perpendicular to the street level.
  • the worm thread of the screw conveyor is preferably catchy.
  • a particular development of the invention comprises at least one screw conveyor with a screw thread, which is more continuous.
  • a method for homogenizing in particular pourable material by means of a screw conveyor having mixing reservoir or paver, wherein the speed and / or the torque of the screw conveyor is set proportional to a required or existing volume flow of the material after leaving the screw conveyor in the process becomes.
  • the mixing behavior is greatly influenced by the speed and / or the torque of the screw conveyor.
  • a low speed of the screw conveyor much material is removed from the middle of the storage space, in particular through the inner section openings.
  • At a high speed of the screw conveyor much material is removed from the edge region of the storage space, in particular through the outer section openings.
  • an average speed of the screw conveyor is favorable.
  • the opening width of individual section openings is changed automatically according to a development of the invention.
  • the mixing reservoir or paver used in the method according to the invention is designed according to at least one of the aforementioned features.
  • the rotational speed and / or the torque of the screw conveyor is set proportionally to a required or existing volume flow of the material after leaving the screw conveyor.
  • the opening width of individual or all section openings is adjusted according to an embodiment of the invention as a function of the distribution of the material in the storage space of the mixing reservoir.
  • An automation of the choice of a speed of the screw conveyor is possible for example by detecting the torque of the screw conveyor. If, for example, a small amount of material is removed from the transfer point, the excess amount of screw conveyor increases, which in turn leads to an increase in its torque.
  • the evaluation of the detected high torque causes a control of the mixing reservoir to reduce the speed of the screw conveyor or turn off this briefly.
  • the figures show a mixing reservoir 1, in particular arranged on a road paver 2.
  • the mixing reservoir 1 comprises a screw conveyor 3 and a reservoir 4 with a filling opening 5 and a removal opening 6.
  • the invention can also be realized by a paver 2 with a distribution screw 7 and a transport device 8 for conveying a material 9 from a transfer area 10 to the distribution screw 7.
  • the essential elements of a paver 2 are a material container 11 and at least one auger 7.
  • Der Material container 11 serves to accommodate the material to be incorporated 9 and is also called bunker.
  • the material container 11 may be designed as a mixing reservoir 1 according to the invention. It is also possible to position a mixing reservoir 1 according to the invention as a material container insert in a conventional material container 11.
  • a conventional material container 11 consists of side walls 12, which are hydraulically foldable and allow complete emptying of the material container 11.
  • the further transport of the material 9 from the material container 11 to the distribution screw 7 is taken over by a transport device 8.
  • the distributor screw 7 the material 9 is evenly distributed in front of a screed 13.
  • FIGS. 1 and 2 show schematic representations of various road pavers 2, in the material containers 11 an inventive mixing reservoir 1 is arranged.
  • the screw conveyor 3 is parallel to the in FIG. 1 illustrated road level 25 and oriented transversely to the production direction 26.
  • the mixing storage container 1 comprises a screw conveyor 3 and a storage space 4 with a filling opening 5 and a removal opening 6.
  • a plurality of guide elements 14 are arranged, which the removal opening 6 in divide a plurality of section openings 15, 16.
  • the embodiment of the mixing reservoir 1 shown here has a total of eight section openings 15, 16, wherein on both sides of the conveyor screw 3 four section openings 15, 16 are arranged side by side.
  • the removal opening 6 of the mixing reservoir 1 is thus divided into four outer section openings 15 and four inner section openings 16.
  • One of the guide elements 14 is designed as a cover 17 of the screw conveyor 3 with respect to the storage space 4. At the section openings 15, 16 are in FIG.
  • the guide elements 14 separate the storage space 4 from a mixing space 20, and the section openings 15, 16 in the guide elements 14 connect the storage space 4 with the mixing space 20.
  • the feed screw 3 is arranged on a side of the section openings 15, 16 facing away from the storage space 4.
  • the screw conveyor 3 covers all section openings 15, 16 such that the transported through all section openings 15, 16, in FIG. 2 shown material 9 mixed together by the screw conveyor 3 and homogenized.
  • the drive of the screw conveyor 3 is coupled to a power source of the road paver 2 and / or to a motor 27 fixed to the mixing reservoir 1.
  • FIGS. 8 and 9 show by way of example two alternative embodiments of the in FIGS. 3 to 7 3.
  • the screw conveyor 3 has two counter-rotating screw thread 21.
  • the diaphragm 18 according to the invention can as in FIG. 8 shown for mixing and homogenizing a screw conveyor 3 are used with single screw flights 21, since the degree of filling of the threaded chambers 22 through the opening width of the in the FIGS. 3 to 7 shown section openings 15, 16 is determined.
  • Each threading chamber 22 is bounded by two adjacent flanks of the worm thread 21, the worm shaft 23 and the outer envelope 24 of the flanks of the worm thread 21.
  • the screw conveyor 3 is designed such that the volume of the thread chambers 22 near the transfer region 10 is greater than away from the transfer region 10. This is achieved by a conical design of the worm shaft 23 and / or, as in FIG. 9 shown, a conical configuration of the screw thread 21, in particular its envelope 24, achieved.
  • the delivery volume of this screw conveyor 3 increases towards the transfer area 10.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
EP14401039.4A 2013-04-12 2014-03-31 Réservoir de mélange et de réserve et procédé d'homogénéisation de matériau dans un tel réservoir de mélange et de réserve Withdrawn EP2799619A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013103705 2013-04-12

Publications (2)

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EP2799619A2 true EP2799619A2 (fr) 2014-11-05
EP2799619A3 EP2799619A3 (fr) 2015-04-01

Family

ID=50630741

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EP14401039.4A Withdrawn EP2799619A3 (fr) 2013-04-12 2014-03-31 Réservoir de mélange et de réserve et procédé d'homogénéisation de matériau dans un tel réservoir de mélange et de réserve

Country Status (2)

Country Link
EP (1) EP2799619A3 (fr)
DE (1) DE202014010804U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3106563A1 (fr) * 2015-06-19 2016-12-21 Dynapac GmbH Finisseuse de route, chargeur et dispositif d'homogeneisation
DE102015009530A1 (de) * 2015-06-19 2016-12-22 Dynapac Gmbh Straßenfertiger, Beschicker und Einrichtung zum Homogenisieren
EP3143858A1 (fr) * 2015-09-18 2017-03-22 Amazonen-Werke H. Dreyer GmbH & Co. KG Épandeur tracté

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018128043A1 (de) * 2018-11-09 2020-05-14 Brabender Technologie Gmbh & Co. Kg Vorrichtung zum Dosieren von Schüttgütern

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2135957A1 (de) 1971-07-19 1973-02-01 Voegele Ag J Strassenfertiger zum einbau von gussasphalt oder dgl
US5533829A (en) 1994-09-29 1996-07-09 Astec Industries, Inc. Paving machine with mixing device and discharge conveyor assembly for remixing segregated paving materials
US7160056B1 (en) 2005-03-11 2007-01-09 Roadtee, Inc. Material transfer vehicle for use in asphalt paving
EP2400059A2 (fr) 2010-06-25 2011-12-28 Dynapac GmbH Procédé de fabrication d'un revêtement routier, chargeur, finisseuse de route et train de machines

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NZ259283A (en) * 1992-12-22 1996-03-26 Reddacliff Equip Pty Ltd Paving machine: hopper with adjustable covered outlet adjacent an auger spreader and attachment and pushing devices for separate vehicles
US5354189A (en) * 1992-12-30 1994-10-11 Mckinnon Paul M Curb forming and extruding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2135957A1 (de) 1971-07-19 1973-02-01 Voegele Ag J Strassenfertiger zum einbau von gussasphalt oder dgl
US5533829A (en) 1994-09-29 1996-07-09 Astec Industries, Inc. Paving machine with mixing device and discharge conveyor assembly for remixing segregated paving materials
US7160056B1 (en) 2005-03-11 2007-01-09 Roadtee, Inc. Material transfer vehicle for use in asphalt paving
EP2400059A2 (fr) 2010-06-25 2011-12-28 Dynapac GmbH Procédé de fabrication d'un revêtement routier, chargeur, finisseuse de route et train de machines

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3106563A1 (fr) * 2015-06-19 2016-12-21 Dynapac GmbH Finisseuse de route, chargeur et dispositif d'homogeneisation
DE102015009530A1 (de) * 2015-06-19 2016-12-22 Dynapac Gmbh Straßenfertiger, Beschicker und Einrichtung zum Homogenisieren
EP3143858A1 (fr) * 2015-09-18 2017-03-22 Amazonen-Werke H. Dreyer GmbH & Co. KG Épandeur tracté

Also Published As

Publication number Publication date
EP2799619A3 (fr) 2015-04-01
DE202014010804U1 (de) 2016-09-21

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