EP4144916A1 - Screed assembly for a road finisher - Google Patents

Screed assembly for a road finisher Download PDF

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Publication number
EP4144916A1
EP4144916A1 EP21194687.6A EP21194687A EP4144916A1 EP 4144916 A1 EP4144916 A1 EP 4144916A1 EP 21194687 A EP21194687 A EP 21194687A EP 4144916 A1 EP4144916 A1 EP 4144916A1
Authority
EP
European Patent Office
Prior art keywords
screed
extending
base
shielding element
arrangement according
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
EP21194687.6A
Other languages
German (de)
French (fr)
Other versions
EP4144916B1 (en
Inventor
Christian Pawlik
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.)
Joseph Voegele AG
Original Assignee
Joseph Voegele AG
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 Joseph Voegele AG filed Critical Joseph Voegele AG
Priority to EP21194687.6A priority Critical patent/EP4144916B1/en
Priority to PL21194687.6T priority patent/PL4144916T3/en
Priority to JP2022137532A priority patent/JP7210801B1/en
Priority to CN202222337306.9U priority patent/CN218813031U/en
Priority to US17/902,169 priority patent/US20230071527A1/en
Priority to CN202211074932.1A priority patent/CN115748378A/en
Priority to BR102022017670-1A priority patent/BR102022017670B1/en
Publication of EP4144916A1 publication Critical patent/EP4144916A1/en
Application granted granted Critical
Publication of EP4144916B1 publication Critical patent/EP4144916B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • E01C19/22—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 consolidating or finishing laid-down unset materials
    • E01C19/42—Machines for imparting a smooth finish to freshly-laid paving courses other than by rolling, tamping or vibrating
    • 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
    • E01C19/4833—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 with tamping or vibrating means for consolidating or finishing, e.g. immersed vibrators, with or without non-vibratory or non-percussive pressing or smoothing means
    • 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
    • E01C19/4866—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 with solely non-vibratory or non-percussive pressing or smoothing means for consolidating or finishing
    • E01C19/4873—Apparatus designed for railless operation
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/10—Heated screeds
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/14—Extendable screeds
    • E01C2301/16—Laterally slidable screeds

Definitions

  • the invention relates to a screed arrangement for a road finisher according to the preamble of claim 1.
  • Pavers for laying concrete or bituminous paving mix usually have a screed assembly that is towed behind the paver. With this arrangement of screeds, the distributed paving mix is smoothed and already considerably pre-compacted before the final compaction takes place, for example by means of a roller driving behind the paver. It is particularly favorable if the screed has a variable length in a direction transverse to the paving travel direction of the road finisher in order to be able to achieve different paving widths.
  • the EP 2 201 176 B1 discloses a leveling screed with telescopic sectors lying one behind the other, which are firmly connected to fixed sectors.
  • the generic EP 2 395 151 A1 discloses a screed arrangement with a base screed and two extending screeds arranged in front of the base screed in the paving direction of travel, which can be extended and retracted transversely to the paving direction of travel in a common adjustment plane. Such a plank arrangement is also called "front mounted screed" in specialist circles.
  • a material deflector element that can be adjusted relative thereto is provided on the base screed and/or on at least one of the extending screeds in order to prevent the paving material from becoming trapped between the two extending screeds when they approach one another are moved and a certain distance between the two extending screeds is not reached.
  • the object of the invention is to provide a screed arrangement for a road finisher in order to eliminate the disadvantages mentioned above.
  • the invention relates to a screed arrangement for a road finisher with a basic screed, a first extending screed and a second extending screed, the first extending screed and the second extending screed being arranged in front of the basic screed in a pulling direction of the screed arrangement and being movable relative to the basic screed transversely to the pulling direction, with at least one of the two extending screeds has a material deflecting member configured to displace paving material toward a central axis (M) to a pull direction of the screed assembly when the extending screed is stationary relative to the base screed, the first extending screed having the material deflecting member, the second Extending screed is positioned further away from the base screed in the pulling direction of the screed arrangement.
  • M central axis
  • the base screed has a shielding element or a deflector plate or shielding plate for the first extending screed.
  • the shielding element can be understood as a wall in the broadest sense.
  • the shielding element is configured to prevent the paving material lying in front of the base plank from being displaced laterally beyond the width of the base plank when the first extending screed is retracted.
  • the pulling direction of the screed arrangement is the direction in which the screed arrangement is pulled during operation by a road finisher or its tractor, i.e. it corresponds to the direction of travel of the road finisher.
  • One of the main advantages of the screed arrangement according to the invention is the high variability of the installation width. This is because the extending screeds arranged one behind the other in the pulling direction in the invention can each have essentially the same working width as the basic screed. As a result, the maximum installation width of the screed arrangement according to the invention can be about three times the working width of the basic screed when the two extending screeds are in a maximum extended position, and that without the addition of additional widening parts. This accelerates the adjustment of the pave width, especially on site, since there is no need to attach, remove or adjust the widening parts.
  • a further advantage of the extending screeds arranged one behind the other offset in the pulling direction is that this arrangement causes very little or even no paving material to be jammed between the two extending screeds because they are not moved towards one another in the same adjustment plane when they are retracted. Furthermore, the material deflecting member of the first extending screed allows the paving material to be shifted in the direction of a central axis to a pulling direction of the screed arrangement, so that no paving material is trapped between the extending screed and the shielding element of the base screed when this extending screed is retracted.
  • the shielding element can prevent the paving material in front of the basic screed from being pushed beyond the width of the basic screed onto the subsoil or onto a surface that has already been pre-compacted by means of the extending screed working at the front
  • the screed arrangement has a central axis, with the central axis being parallel to the pulling direction, with each extending screed having an inside and an outside, with the inside being closer to the central axis than the outside when the respective extending screed is in an extended position, with the Material deflector is arranged on the inside of the extending screed.
  • the base screed and the two extending screeds preferably have essentially the same working width.
  • the screed arrangement can achieve significantly greater installation widths in comparison to a known screed arrangement in which the extendable screeds are half the size of the basic screed.
  • the shielding element is present as a plate which is fastened laterally to the base plank body and extends beyond the base plank body in the pulling direction. This allows the first extending screed to be retracted and extended over its entire working width.
  • the paving material is prevented from falling out transversely to the pulling direction in a particularly efficient manner if the shielding element is designed essentially as high as the first extending screed and/or the shielding element extends in the pulling direction corresponding to a working depth of the first extending screed.
  • the shielding element is designed to be adjustable and/or detachable relative to the base plank in the pulling direction. As a result, the shielding element can be adjusted with regard to a constructive design of the material deflection element.
  • a demountable shielding element is advantageous for cleaning and possibly transport purposes.
  • the shielding element or a part formed on it can expediently be designed such that it can be pivoted relative to the base plank and/or displaced transversely to the pulling direction. In this way, the paving material can be moved inward from an outer area in front of the basic screed towards a central axis of the screed arrangement running in the pulling direction.
  • the shielding element is part of a side shifter Basic plank trained.
  • a side shifter prevents the paving material from falling out beyond a desired width. In addition to its actual function, it also acts as a shielding element.
  • the shielding element is arranged as a plate on a side shifter of the base plank.
  • This plate could be designed to be displaceable or pivotable relative to the side shifter in order to push paving material in the direction of the central axis of the screed arrangement.
  • paving material can be shifted in such a way that it is not jammed between the two extending screeds.
  • the two extending screeds could be retracted one after the other, i.e. the one positioned closer to the base screed first and at least temporarily offset by the extending screed that is in front of it.
  • the shielding element is designed as an integral part of a side shifter of the base plank.
  • Pinching or sticking of the built-in material can be reduced particularly effectively if the material deflecting element and/or the shielding element can be heated.
  • the second extending screed also has a material deflecting member configured for moving paving material. It is advantageous if the first extending screed has a shielding element for the material deflecting member of the second extending screed.
  • the construction described further above, relating to the shielding element of the base plank and the material deflector element of the first extending plank, is repeated in this variant, at least from a functional point of view. Basically, both the shielding elements and the material deflection members can be designed in a comparable structural manner.
  • a side shifter of the first extending screed which is arranged on an opposite side of the material deflecting member formed thereon, can act as a shielding element for the material deflecting member formed on the second extending screed.
  • a shielding element on the side shifter of the first extending screed that is adjustable, in particular pivotable or displaceable, relative to the side shifter formed thereon, in order to promote the shifting of the paving material in the direction of a central axis of the screed arrangement.
  • plank arrangement is particularly stable when the material deflector member is rigidly attached to the or the respective extending planks is formed.
  • the material deflecting member prefferably be adjustable between an inactive position, in which it extends parallel to the pulling direction, and an active position, in which it extends at an angle to the pulling direction. In the inactive position, the material deflection element therefore does not affect the installation process. Furthermore, in the inactive position, an additional working width is available for extending the extending screeds. In the active position, the setting of the material deflector member at an angle to the direction of pull ensures that the paving mix is displaced to a central axis of the screed arrangement when the extending screeds are retracted. The deflection of the paving material, i.e.
  • the displacement of the paving material in the direction of the central axis of the screed arrangement is particularly effective when the material deflecting member is in the active position at an angle of 30° to 55° relative to the pulling direction.
  • the material deflection members can be pivotable about a hinge. It is also possible that a rear side of the material deflecting members is coupled to the base plank via a sliding fit so that the rear side can be slid along the base plank.
  • the deflection of paving material is particularly efficient if the material deflection element is designed in the form of a plow structure. This allows the paving material to be pushed forwards when the extending screed(s) is/are retracting.
  • the deflection of built-in material is particularly efficient if the material deflection element extends at an angle that is not equal to zero to the direction of pull, preferably at an angle of 30° to 60°.
  • the screed arrangement has a screed operator's station on the side of the base screed, facing the material deflector element of the first extending screed. From here, a screed operator can monitor the material deflector element, in particular its plowing function, while the extending screed is being retracted.
  • the invention relates to a road finisher with a screed arrangement of the type described above.
  • a road finisher in particular the screed arrangement used on it, enables the paving width to be adjusted quickly and precisely without jamming a mixed material template between the basic screed and the extending screed.
  • the screed arrangement offers the practice-relevant advantage that it can be adjusted quickly and precisely for leveling purposes, in particular for leveling the height and/or cross slope is. This is favored above all by the broadly adjustable screed structure of the screed arrangement according to the invention, although composed of few modules.
  • the road finisher 1 shows a side view of a road finisher 1. Its paving direction of travel is indicated by E.
  • the road finisher 1 includes a tractor 2. This has a mix bunker 3, into which, for example, asphalt mix can be filled.
  • This mixed material or paving material can be transported by a conveyor system (not shown) counter to paving travel direction E of road finisher 1 to the rear end of tractor 2 . There it can be distributed transversely to the paving direction E in front of a screed arrangement 4 of the road finisher 1 .
  • the screed arrangement 4 can be mounted on the towing vehicle 2 so that it can be leveled by support arms 20 .
  • the plank arrangement 2 is towed behind the tractor 2 of the road finisher 1 in the installation travel direction E.
  • a transverse distribution device 18 is located between the tractor 2 of the road finisher 1 and the screed arrangement 4 towed thereon (see FIG figure 2 ), for example two transverse distribution screws, to spread the paving material to be processed over the paving width in front of the screed arrangement 4.
  • the screed arrangement 4 serves in particular to smooth and/or pre-compact the mixed material.
  • the paver 1 is shown as a wheeled paver.
  • the road finisher 1 could have a crawler chassis.
  • the screed arrangement 4 is of the "front-mounted screed" type, in which a first extending screed 5 and a second extending screed 6 are arranged in front of a basic screed 7 viewed in a pulling direction Z of the screed arrangement 4.
  • the pulling direction Z of the screed arrangement 4 corresponds to the paving travel direction E of the road finisher 1.
  • the first extending screed 5 is positioned closer to the base screed 7 in the pulling direction Z.
  • the second extending screed 6 is positioned further away from the base screed 7 in the pulling direction Z than the first extending screed 5. Consequently, the first extending screed 5 and the second extending screed 6 are arranged one behind the other in the pulling direction Z, i.e.
  • the base board 7 can be in one piece or consist of several parts.
  • the screed parts shown have means for smoothing and (pre)compacting paving mix or paving material, for example in the form of smoothing plates and/or tampers.
  • both the base screed 7 and the two extending screeds 5, 6 each have essentially the same working width 16.
  • the extending screeds 5, 6 can be moved in the direction of extension A, ie transversely to the direction of pull Z, relative to the basic screed 7.
  • Suitable drives and guide systems for example hydraulic drives, guide rails and/or guide rods, are provided for extending and retracting the extending screeds 5, 6.
  • a material deflecting member 10 is formed on an inner side 9 of the first extending screed 5, which in figure 2 wedge-shaped and configured integrally with an extending screed body 5 ′ of the first extending screed 5 .
  • the base screed 7 has a shielding element 13 for the first extending screed 5 .
  • the shielding element 13 is provided laterally on a base plank body 7'. For example, it could be mounted as a rigid plate 13′′′, if necessary as part of a side shifter formed on the base plank 7.
  • the shielding element 13 forms a wall that extends in the pulling direction Z.
  • the material deflecting member 10 enables the paving mix to be displaced from a region 12 of the screed arrangement 4 when the extending screed 5 is retracting. This can prevent paving material from being trapped between the shielding element 13 of the base screed 7 and the extending screed 5 immediately in front of it.
  • the shielding element 13 prevents paving material spread out in front of the base plank 7 when retracting the extending screed 5 from being pushed laterally beyond the width of the base screed 7 .
  • a side shifter 5a, 6a is provided on an outer side 11 of the extending screeds 5, 6, which essentially determines the dimension for the paving width of the new road surface and prevents the paving mix from being distributed beyond a desired width.
  • figure 3 shows the screed arrangement 4 during the extension of the extending screeds 5, 6 in the extension direction A in order to create a larger installation width.
  • the second extending screed 6 on its inside 9 ' also a material deflector member 10'.
  • the material deflecting member 10' is wedge-shaped and integral with an extending screed body 6' of the second extending screed 6. This material deflecting element 10' enables the paving mix to be displaced from a region 12' of the screed arrangement 4 when the second extending screed 6 is retracting. This can prevent paving material from being pinched between the side shifter 5a of the extending screed 5 and the extending screed 6 .
  • FIG 4 1 shows the screed arrangement 4 in an extended position 17.
  • each extending screed 5, 6 has a side shifter 5a, 6a on its outer side 11 and a material deflecting member 10, 10' on its inner side 9.
  • the extended extending screeds 5, 6 make it possible for the entire working width 16' to essentially correspond to three times a working width that can be generated solely by means of the basic screed 7.
  • first shielding element 13 is pivotably attached to the base plank 7 laterally by means of a hinge 19 .
  • a hydraulic drive (not shown) can be activated for this purpose.
  • the shielding element 13 In a first position 13 ′, the shielding element 13 is mounted essentially parallel to the Z pulling direction. The shielding element 13 prevents the retraction or retraction of the extending screed 5, ie when moving the first Extending screed 5 in the direction of insertion A' that the paving mix or paving material falls out of the area 12 of the screed arrangement 4.
  • the shielding element 13 is aligned at an angle ⁇ of 30° to 55° to the pulling direction Z in order to shift the paving material in the direction of a (virtual) central axis M of the plank arrangement 4.
  • the shielding element 13 is preferably the same height as the first extending screed 5.
  • the shielding element 13 extends in the pulling direction Z corresponding to a working depth 15 of the first extending screed 5.
  • the first extending screed 5 has a shielding element 14 for the second extending screed 6 .
  • the shielding element 14 prevents paving material spread out in front of the extending screed 5 from being pushed out over the width of the extending screed 5 when the extending screed 6 is being retracted.
  • the shielding element 14 is provided on the side of the extending screed body 5'. It could, for example, be mounted as a rigid plate 14''', possibly provided as part of the side shifter 5a formed on the extending screed 5.
  • the shielding element 14 forms a wall extending in the pulling direction Z.
  • figure 4 in dashed representation a variant according to which the shielding element 14 is attached to the side shifter 5a of the first extending screed 5 by means of a hinge 19' so that it can pivot relative to the side shifter 5a in order to prevent the paving material from being moved away from the region 12' of the screed arrangement 4 when the second Extending screed 6 to promote further in the direction of retraction A'.
  • the shielding element 14 can be adjusted between a first position 14′ and a second position 14′′ via a hydraulic drive (not shown). In the first position 14′, the shielding element 14 is essentially parallel to the pulling direction Z. In the second position 14′′.
  • the shielding element 14 is aligned at an angle ⁇ of 30° to 55° to the pulling direction Z in order to displace the paving material in the direction of the central axis M of the plank arrangement 4 when the plank arrangement 4 is pulled in the pulling direction Z by the road finisher.
  • the figure 4 shows that the material deflecting element 10 together with the shielding element 13 and the material deflecting element 10' together with the shielding element 14 form functional units on the screed arrangement 4 which prevent paving material being trapped between the shielding element 13 of the base screed 7 and the extending screed 5 and between the side shifter 5a the extending screed 5 and the other extending screed 6 can prevent.
  • these functional units have a mirror-symmetrical structure offset in the pulling direction Z with respect to the central axis M.
  • figure 5 shows a perspective view of an extending screed 5, 6, wherein the working depth 15 and a working height 14 of the extending screed 5, 6 are shown.
  • figure 6 shows a further exemplary embodiment of a screed arrangement 4 in the extended position 17 of the extending screeds 5, 6, with each extending screed 5, 6 having a material deflecting member 10, 10', and with a side slide 7a of the base screed 7 and on the side slide 5a of the first extending screed 5 relative to the respective side slides 5a, 7a arranged displaceable shielding element 22, 22 'is provided.
  • figure 7 shows a further exemplary embodiment of a screed arrangement 4 in an extended position 17 of the extending screeds 5, 6, each extending screed 5, 6 having a material deflecting member 10", 10" designed to be pivotable relative to the respective extending screed bodies 5', 6'.
  • the material deflecting members 10", 10"' can be pivoted about a hinge 23, 23'.
  • a respective hydraulic drive (not shown) can be provided for this purpose.
  • the respective material deflection members 10, 10', 10", 10'" and/or the shielding elements 13, 14, 22, 22' can be designed as a heating plate, in particular as an electric heating plate.
  • the Figures 2 - 4 , 6 and 7 show a screed operator's station B on the side of the base screed 7.
  • the screed operator's station B is positioned facing the first extending screed 5, in particular the region 12.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

Bohlenanordnung (4) für einen Straßenfertiger (1) mit einer Grundbohle, einer ersten Ausziehbohle (5) und einer zweiten Ausziehbohle (6), wobei die erste Ausziehbohle (5) und die zweite Ausziehbohle (6) in einer Zugrichtung (Z) der Bohlenanordnung (4) vor der Grundbohle (7) angeordnet und quer zur Zugrichtung (Z) relativ zur Grundbohle (7) bewegbar sind, wobei zumindest eine der beiden Ausziehbohlen (5, 6) ein Materialabweiseglied (10, 10") aufweist, das dazu konfiguriert ist, Einbaumaterial quer zu einer Zugrichtung (Z) der Bohlenanordnung (4) zu verlagern, wenn die Ausziehbohle (5, 6) stationär relativ zur Grundbohle (7) ist, wobei die erste Ausziehbohle (5) das Materialabweiseglied (10, 10") aufweist, wobei die zweite Ausziehbohle (6) in Zugrichtung (Z) weiter von der Grundbohle (7) entfernt positioniert ist als die erste Ausziehbohle (5).

Figure imgaf001
Screed arrangement (4) for a road finisher (1) with a base screed, a first extending screed (5) and a second extending screed (6), the first extending screed (5) and the second extending screed (6) being pulled in a direction (Z) of the screed arrangement (4) are arranged in front of the base plank (7) and can be moved relative to the base plank (7) transversely to the pulling direction (Z), at least one of the two extending planks (5, 6) having a material deflecting member (10, 10") configured for this purpose is to displace paving material transversely to a pulling direction (Z) of the screed arrangement (4) when the extending screed (5, 6) is stationary relative to the base screed (7), the first extending screed (5) having the material deflecting member (10, 10") wherein the second extending screed (6) is positioned further away from the base screed (7) in the pulling direction (Z) than the first extending screed (5).
Figure imgaf001

Description

Die Erfindung bezieht sich auf eine Bohlenanordnung für einen Straßenfertiger gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a screed arrangement for a road finisher according to the preamble of claim 1.

Straßenfertiger zum Einbau von Beton oder bituminösem Einbaumischgut verfügen üblicherweise über eine Bohlenanordnung, die hinter dem Straßenfertiger hergeschleppt wird. Mit dieser Bohlenanordnung wird das verteilte Einbaumischgut geglättet und bereits erheblich vorverdichtet, bevor anschließend die endgültige Verdichtung, beispielsweise mittels einer dem Straßenfertiger hinterherfahrenden Walze, erfolgt. Besonders günstig ist es, wenn die Bohle in einer Richtung quer zur Einbau-Fahrtrichtung des Straßenfertigers eine variable Länge hat, um unterschiedliche Einbaubreiten erzielen zu können.Pavers for laying concrete or bituminous paving mix usually have a screed assembly that is towed behind the paver. With this arrangement of screeds, the distributed paving mix is smoothed and already considerably pre-compacted before the final compaction takes place, for example by means of a roller driving behind the paver. It is particularly favorable if the screed has a variable length in a direction transverse to the paving travel direction of the road finisher in order to be able to achieve different paving widths.

Die EP 2 201 176 B1 offenbart eine Abgleichbohle mit hintereinanderliegenden ausziehbaren Sektoren, die fest mit festen Sektoren verbunden sind.The EP 2 201 176 B1 discloses a leveling screed with telescopic sectors lying one behind the other, which are firmly connected to fixed sectors.

Die gattungsgemäße EP 2 395 151 A1 offenbart eine Bohlenanordnung mit einer Grundbohle und zwei in Einbaufahrtrichtung vor der Grundbohle angeordneten Ausziehbohlen, die quer zur Einbaufahrtrichtung in einer gemeinsamen Verstellebene aus- und einfahrbar sind. Eine solche Bohlenanordnung wird in Fachkreisen auch "Front mounted screed" genannt. Dadurch, dass die beiden Ausziehbohlen jeweils unmittelbar zur Vorderseite der Grundbohle benachbart sind, ist an der Grundbohle und/oder an wenigstens einer der Ausziehbohlen ein relativ dazu verstellbares Materialabweiseglied vorgesehen, um ein Einklemmen des Einbaumaterials zwischen den beiden Ausziehbohlen zu verhindern, wenn diese aufeinander zu bewegt werden und ein bestimmter Abstand zwischen den beiden Ausziehbohlen unterschritten wird.The generic EP 2 395 151 A1 discloses a screed arrangement with a base screed and two extending screeds arranged in front of the base screed in the paving direction of travel, which can be extended and retracted transversely to the paving direction of travel in a common adjustment plane. Such a plank arrangement is also called "front mounted screed" in specialist circles. Due to the fact that the two extending screeds are each directly adjacent to the front side of the base screed, a material deflector element that can be adjusted relative thereto is provided on the base screed and/or on at least one of the extending screeds in order to prevent the paving material from becoming trapped between the two extending screeds when they approach one another are moved and a certain distance between the two extending screeds is not reached.

Nachteilig bei dieser Bohlenanordnung ist jedoch, dass in Richtung quer zur Einbau-Fahrtrichtung die Arbeitsbreiten der Ausziehbohlen auf etwa die halbe Arbeitsbreite der Grundbohle beschränkt sind. Folglich kann die maximale Einbaubreite nicht über eine doppelte Arbeitsbreite der Grundbohle hinausgehen. Für den Straßenaufbau mit größeren Einbaubreiten müssen an dieser Bohlenanordnung daher zusätzliche Verbreiterungsteile angebracht werden, was wiederum arbeits- und zeitaufwändig ist.The disadvantage of this screed arrangement, however, is that the working widths of the extending screeds are limited to approximately half the working width of the basic screed in the direction transverse to the direction of travel when paving. As a result, the maximum pave width cannot exceed twice the working width of the base screed. Therefore, additional widening parts must be attached to this screed arrangement for road construction with greater installation widths, which in turn is laborious and time-consuming.

Aufgabe der Erfindung ist es, eine Bohlenanordnung für einen Straßenfertiger zur Verfügung zu stellen, um die obengenannten Nachteile zu beseitigen.The object of the invention is to provide a screed arrangement for a road finisher in order to eliminate the disadvantages mentioned above.

Diese Aufgabe wird gelöst durch eine Bohlenanordnung mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by a screed arrangement having the features of claim 1. Advantageous developments of the invention are specified in the dependent claims.

Die Erfindung betrifft eine Bohlenanordnung für einen Straßenfertiger mit einer Grundbohle, einer ersten Ausziehbohle und einer zweiten Ausziehbohle, wobei die erste Ausziehbohle und die zweite Ausziehbohle in einer Zugrichtung der Bohlenanordnung vor der Grundbohle angeordnet und quer zur Zugrichtung relativ zur Grundbohle bewegbar sind, wobei zumindest eine der beiden en Ausziehbohlen ein Materialabweiseglied aufweist, das dazu konfiguriert ist, Einbaumaterial in Richtung auf eine Mittelachse (M) zu einer Zugrichtung der Bohlenanordnung zu verlagern, wenn die Ausziehbohle relativ zur Grundbohle stationär ist, wobei die erste Ausziehbohle das Materialabweiseglied aufweist, wobei die zweite Ausziehbohle in Zugrichtung der Bohlenanordnung weiter von der Grundbohle entfernt positioniert ist. Des Weiteren weist die Grundbohle für die erste Ausziehbohle ein Abschirmelement, bzw. ein Abweiseblech oder Abschirmblech auf. Das Abschirmelement kann im breitesten Sinne als Wand verstanden werden. Das Abschirmelement ist dazu konfiguriert ist, beim Einfahren der ersten Ausziehbohle ein Verlagern des vor der Grundbohle liegende Einbaumaterials seitlich über die Breite der Grundbohle hinaus zu verhindern. Die Zugrichtung der Bohlenanordnung ist diejenige Richtung, in der die Bohlenanordnung im Betrieb von einem Straßenfertiger bzw. dessen Zugmaschine gezogen wird, d.h. sie entspricht der Fahrtrichtung des Straßenfertigers.The invention relates to a screed arrangement for a road finisher with a basic screed, a first extending screed and a second extending screed, the first extending screed and the second extending screed being arranged in front of the basic screed in a pulling direction of the screed arrangement and being movable relative to the basic screed transversely to the pulling direction, with at least one of the two extending screeds has a material deflecting member configured to displace paving material toward a central axis (M) to a pull direction of the screed assembly when the extending screed is stationary relative to the base screed, the first extending screed having the material deflecting member, the second Extending screed is positioned further away from the base screed in the pulling direction of the screed arrangement. Furthermore, the base screed has a shielding element or a deflector plate or shielding plate for the first extending screed. The shielding element can be understood as a wall in the broadest sense. The shielding element is configured to prevent the paving material lying in front of the base plank from being displaced laterally beyond the width of the base plank when the first extending screed is retracted. The pulling direction of the screed arrangement is the direction in which the screed arrangement is pulled during operation by a road finisher or its tractor, i.e. it corresponds to the direction of travel of the road finisher.

Einer der wesentlichen Vorteile der erfindungsgemäßen Bohlenanordnung ist die hohe Variabilität der Einbaubreite. Denn die bei der Erfindung in Zugrichtung hintereinander angeordneten Ausziehbohlen können jeweils im Wesentlichen die gleiche Arbeitsbreite wie die Grundbohle aufweisen. Dadurch kann die maximale Einbaubreite der erfindungsgemäßen Bohlenanordnung bei einer maximal ausgezogenen Stellung der beiden Ausziehbohlen etwa das Dreifache einer Arbeitsbreite der Grundbohle sein, und das ohne einen Anbau von zusätzlichen Verbreiterungsteilen. Dies beschleunigt vor allem vor Ort auf der Baustelle das Verstellen der Einbaubreite, da auf das An- und Ausbauen sowie Einstellen der Verbreiterungsteile verzichtet werden kann.One of the main advantages of the screed arrangement according to the invention is the high variability of the installation width. This is because the extending screeds arranged one behind the other in the pulling direction in the invention can each have essentially the same working width as the basic screed. As a result, the maximum installation width of the screed arrangement according to the invention can be about three times the working width of the basic screed when the two extending screeds are in a maximum extended position, and that without the addition of additional widening parts. This accelerates the adjustment of the pave width, especially on site, since there is no need to attach, remove or adjust the widening parts.

Ein weiterer Vorteil der in Zugrichtung versetzt hintereinander angeordneten Ausziehbohlen besteht darin, dass durch diese Anordnung sehr wenig oder sogar kein Einbaumaterial zwischen den beiden Ausziehbohlen eingeklemmt wird, weil sie beim Einfahren nicht in derselben Verstellebene aufeinander zu bewegt werden. Des Weiteren ermöglicht das Materialabweiseglied der ersten Ausziehbohle, ein Verlagern des Einbaumaterials in Richtung auf eine Mittelachse zu einer Zugrichtung der Bohlenanordnung, so dass beim Einfahren dieser Ausziehbohle kein Einbaumaterial zwischen der Ausziehbohle und dem Abschirmelement der Grundbohle eingeklemmt wird.A further advantage of the extending screeds arranged one behind the other offset in the pulling direction is that this arrangement causes very little or even no paving material to be jammed between the two extending screeds because they are not moved towards one another in the same adjustment plane when they are retracted. Furthermore, the material deflecting member of the first extending screed allows the paving material to be shifted in the direction of a central axis to a pulling direction of the screed arrangement, so that no paving material is trapped between the extending screed and the shielding element of the base screed when this extending screed is retracted.

Durch das Abschirmelement kann beim Einfahren der ersten Ausziehbohle verhindert werden, dass das vor der Grundbohle liegende Einbaumaterial über die Breite der Grundbohle hinaus auf den Untergrund oder auf einen bereits mittels der an vorderster Stelle arbeitenden Ausziehbohle vorverdichteten Belag geschoben wirdWhen retracting the first extending screed, the shielding element can prevent the paving material in front of the basic screed from being pushed beyond the width of the basic screed onto the subsoil or onto a surface that has already been pre-compacted by means of the extending screed working at the front

Zweckmäßig ist es, wenn die Bohlenanordnung eine Mittelachse aufweist, wobei die Mittelachse parallel zur Zugrichtung ist, wobei jede Ausziehbohle eine Innenseite und eine Außenseite aufweist, wobei die Innenseite in einer ausgezogenen Position der jeweiligen Ausziehbohle näher an der Mittelachse liegt als die Außenseite, wobei das Materialabweiseglied an der Innenseite der Ausziehbohle angeordnet ist.It is expedient if the screed arrangement has a central axis, with the central axis being parallel to the pulling direction, with each extending screed having an inside and an outside, with the inside being closer to the central axis than the outside when the respective extending screed is in an extended position, with the Material deflector is arranged on the inside of the extending screed.

Vorzugsweise weisen die Grundbohle und die beiden Ausziehbohlen im Wesentlichen eine gleiche Arbeitsbreite auf. Dadurch, wie bereits oben angedeutet, kann die Bohlenanordnung erheblich größere Einbaubreiten erreichen im Vergleich zu einer bekannten Bohlenanordnung, bei der die Ausziehbohlen halb so groß wie die Grundbohle sind.The base screed and the two extending screeds preferably have essentially the same working width. As a result, as already indicated above, the screed arrangement can achieve significantly greater installation widths in comparison to a known screed arrangement in which the extendable screeds are half the size of the basic screed.

Besonders zweckmäßig ist es, wenn das Abschirmelement als eine seitlich am Grundbohlenkörper der Grundbohle befestigte, sich in Zugrichtung über den Grundbohlenkörper hinaus erstreckende Platte vorliegt. Damit kann die erste Ausziehbohle über ihre komplette Arbeitsbreite ein- und ausgefahren werden.It is particularly expedient if the shielding element is present as a plate which is fastened laterally to the base plank body and extends beyond the base plank body in the pulling direction. This allows the first extending screed to be retracted and extended over its entire working width.

Besonders effizient wird das Herausfallen des Einbaumaterials quer zur Zugrichtung verhindert, wenn das Abschirmelement im Wesentlichen genauso hoch ausgebildet ist wie die erste Ausziehbohle und/oder sich das e Abschirmelement in Zugrichtung entsprechend einer Arbeitstiefe der ersten Ausziehbohle erstreckt.The paving material is prevented from falling out transversely to the pulling direction in a particularly efficient manner if the shielding element is designed essentially as high as the first extending screed and/or the shielding element extends in the pulling direction corresponding to a working depth of the first extending screed.

Bei einer vorteilhaften Ausführungsform ist das Abschirmelement in Zugrichtung relativ zu der Grundbohle verstellbar und/oder demontierbar ausgebildet. Dadurch lässt sich das Abschirmelement angesichts einer konstruktiven Ausbildung des Materialabweiseglieds einstellen. Ein demontierbares Abschirmelement ist vorteilhaft für Reinigungs- und ggf. Transportzwecke.In an advantageous embodiment, the shielding element is designed to be adjustable and/or detachable relative to the base plank in the pulling direction. As a result, the shielding element can be adjusted with regard to a constructive design of the material deflection element. A demountable shielding element is advantageous for cleaning and possibly transport purposes.

Das Abschirmelement oder ein daran ausgebildeter Teil kann zweckmäßigerweise relativ zu der Grundbohle verschwenkbar und/oder quer zur Zugrichtung verlagerbar ausgebildet sein. Auf diese Weise kann das Einbaumaterial aus einem äußeren Bereich vor der Grundbohle einwärts auf eine in Zugrichtung verlaufende Mittelachse der Bohlenanordnung zu bewegt werden.The shielding element or a part formed on it can expediently be designed such that it can be pivoted relative to the base plank and/or displaced transversely to the pulling direction. In this way, the paving material can be moved inward from an outer area in front of the basic screed towards a central axis of the screed arrangement running in the pulling direction.

In einer alternativen Ausführungsform ist das Abschirmelement als Teil eines Seitenschiebers der Grundbohle ausgebildet. Ein solcher Seitenschieber verhindert ein Herausfallen des Einbaumaterials über eine gewünschte Breite hinaus. Dabei wirkt er zusätzlich zu seiner eigentlichen Funktion auch als Abschirmelement.In an alternative embodiment, the shielding element is part of a side shifter Basic plank trained. Such a side shifter prevents the paving material from falling out beyond a desired width. In addition to its actual function, it also acts as a shielding element.

Denkbar ist es, dass das Abschirmelement als Platte an einem Seitenschieber der Grundbohle angeordnet ist. Diese Platte könnte relativ zum Seitenschieber verschiebbar oder verschwenkbar ausgebildet sein, um Einbaumaterial in Richtung der Mittelachse der Bohlenanordnung zu schieben. Dadurch ließe sich Einbaumaterial beim Einfahren der Ausziehbohle derart verlagern, dass es nicht zwischen den beiden Ausziehbohlen eingeklemmt wird. In diesem Zusammenhang wäre es vorstellbar, dass die beiden Ausziehbohlen nacheinander, sprich die näher an der Grundbohle positionierte zuerst und zumindest zeitweise versetzt die dieser vorangestellten Ausziehbohle einfahrbar sind.It is conceivable that the shielding element is arranged as a plate on a side shifter of the base plank. This plate could be designed to be displaceable or pivotable relative to the side shifter in order to push paving material in the direction of the central axis of the screed arrangement. As a result, when the extending screed is retracted, paving material can be shifted in such a way that it is not jammed between the two extending screeds. In this context, it would be conceivable that the two extending screeds could be retracted one after the other, i.e. the one positioned closer to the base screed first and at least temporarily offset by the extending screed that is in front of it.

In einer besonders stabilen Ausführungsform ist das Abschirmelement als integraler Bestandteil eines Seitenschiebers der Grundbohle ausgebildet.In a particularly stable embodiment, the shielding element is designed as an integral part of a side shifter of the base plank.

Besonders effektiv lässt sich ein Einklemmen oder ein Anhaften des Einbaumaterials dadurch verringern, dass das Materialabweiseglied und/oder das Abschirmelement beheizbar sind.Pinching or sticking of the built-in material can be reduced particularly effectively if the material deflecting element and/or the shielding element can be heated.

Besonders vorteilhaft ist es für das Verlagern von Einbaumaterial, wenn die zweite Ausziehbohle ebenfalls ein zum Verlagern von Einbaumaterial konfiguriertes Materialabweiseglied aufweist. Vorteilhaft ist es, wenn die erste Ausziehbohle für das Materialabweiseglied der zweiten Ausziehbohle ein Abschirmelement aufweist. Der weiter vorne beschriebene Aufbau, betreffend das Abschirmelement der Grundbohle und das Materialabweiseglied der ersten Ausziehbohle, wiederholt sich bei dieser Variante zumindest in funktionaler Hinsicht. Im Grunde genommen können sowohl die Abschirmelemente als auch die Materialabweiseglieder in vergleichbarer konstruktiver Weise ausgebildet sein.It is particularly advantageous for moving paving material if the second extending screed also has a material deflecting member configured for moving paving material. It is advantageous if the first extending screed has a shielding element for the material deflecting member of the second extending screed. The construction described further above, relating to the shielding element of the base plank and the material deflector element of the first extending plank, is repeated in this variant, at least from a functional point of view. Basically, both the shielding elements and the material deflection members can be designed in a comparable structural manner.

Ein Seitenschieber der ersten Ausziehbohle, der an einer gegenüberliegenden Seite des daran ausgebildeten Materialabweiseglieds angeordnet ist, kann für das an der zweiten Ausziehbohle ausgebildete Materialabweiseglied als Abschirmelement wirken.A side shifter of the first extending screed, which is arranged on an opposite side of the material deflecting member formed thereon, can act as a shielding element for the material deflecting member formed on the second extending screed.

Denkbar wäre es, am Seitenschieber der ersten Ausziehbohle ein relativ zu dem daran ausgebildeten Seitenschieber verstellbares, insbesondere schwenkbares oder verschiebbares, Abschirmelement vorzusehen, um das Verlagern des Einbaumaterials in Richtung auf eine Mittelachse der Bohlenanordnung zu begünstigen.It would be conceivable to provide a shielding element on the side shifter of the first extending screed that is adjustable, in particular pivotable or displaceable, relative to the side shifter formed thereon, in order to promote the shifting of the paving material in the direction of a central axis of the screed arrangement.

Besonders stabil ist die Bohlenanordnung, wenn das Materialabweiseglied starr an der oder den jeweiligen Ausziehbohlen ausgebildet ist.The plank arrangement is particularly stable when the material deflector member is rigidly attached to the or the respective extending planks is formed.

Denkbar wäre es, dass das Materialabweiseglied zwischen einer inaktiven Stellung, in der es sich parallel zur Zugrichtung erstreckt, und einer aktiven Stellung, in der es sich unter einem Winkel zur Zugrichtung erstreckt, verstellbar ist. In der inaktiven Stellung beeinflusst das Materialabweiseglied somit den Einbauprozess nicht. Des Weiteren steht in der inaktiven Stellung eine zusätzliche Arbeitsbreite zum Ausziehen der Ausziehbohlen zur Verfügung. In der aktiven Stellung sorgt die Anstellung des Materialabweiseglieds unter einem Winkel zur Zugrichtung dafür, dass das Einbaumischgut zu einer Mittelachse der Bohlenanordnung verlagert wird, wenn die Ausziehbohlen eingefahren werden. Besonders effektiv wird das Abweisen des Einbaumaterials, d.h. in diesem Fall das Verlagern des Einbaumaterials in Richtung auf die Mittelachse der Bohlenanordnung, wenn das Materialabweiseglied in der aktiven Stellung unter einem Winkel von 30° bis 55° relativ zur Zugrichtung angestellt ist. Die Materialabweiseglieder können um ein Scharnier verschwenkbar sein. Es ist auch möglich, dass eine rückwärtige Seite der Materialabweiseglieder über einen Schiebesitz mit der Grundbohle gekoppelt ist, damit die rückwärtige Seite entlang der Grundbohle verschoben werden kann.It would be conceivable for the material deflecting member to be adjustable between an inactive position, in which it extends parallel to the pulling direction, and an active position, in which it extends at an angle to the pulling direction. In the inactive position, the material deflection element therefore does not affect the installation process. Furthermore, in the inactive position, an additional working width is available for extending the extending screeds. In the active position, the setting of the material deflector member at an angle to the direction of pull ensures that the paving mix is displaced to a central axis of the screed arrangement when the extending screeds are retracted. The deflection of the paving material, i.e. in this case the displacement of the paving material in the direction of the central axis of the screed arrangement, is particularly effective when the material deflecting member is in the active position at an angle of 30° to 55° relative to the pulling direction. The material deflection members can be pivotable about a hinge. It is also possible that a rear side of the material deflecting members is coupled to the base plank via a sliding fit so that the rear side can be slid along the base plank.

Besonders effizient ist das Abweisen von Einbaumaterial, wenn das Materialabweiseglied in Form einer Pflugstruktur ausgebildet ist. Damit kann das Einbaumaterial nach vorne weg geschoben werden, wenn die Ausziehbohle(n) einfährt bzw. einfahren.The deflection of paving material is particularly efficient if the material deflection element is designed in the form of a plow structure. This allows the paving material to be pushed forwards when the extending screed(s) is/are retracting.

Besonders effizient ist das Abweisen von Einbaumaterial, wenn das Materialabweiseglied sich in Draufsicht unter einem Winkel ungleich Null zur Zugrichtung erstreckt, vorzugsweise unter einem Winkel von 30° bis 60°.The deflection of built-in material is particularly efficient if the material deflection element extends at an angle that is not equal to zero to the direction of pull, preferably at an angle of 30° to 60°.

Besonders zweckmäßig ist es, wenn die Bohlenanordnung einen seitlich an der Grundbohle, dem Materialabweiseglied der ersten Ausziehbohle zugewandten Bohlenbedienstand aufweist. Von hier aus kann ein Bohlenbediener ausgezeichnet das Materialabweiseglied, insbesondere dessen Pflugfunktion während des Einfahrens der Ausziehbohle, überwachen.It is particularly expedient if the screed arrangement has a screed operator's station on the side of the base screed, facing the material deflector element of the first extending screed. From here, a screed operator can monitor the material deflector element, in particular its plowing function, while the extending screed is being retracted.

Schließlich bezieht sich die Erfindung auf einen Straßenfertiger mit einer Bohlenanordnung der vorstehend beschriebenen Art. Ein solcher Straßenfertiger, insbesondere die daran angewandte Bohlenanordnung, ermöglicht eine schnelle sowie präzise Verstellung der Einbaubreite, ohne dabei eine Mischgutvorlage zwischen der Grundbohle und der Ausziehbohle einzuklemmen. Des Weiteren bietet die Bohlenanordnung den praxisrelevanten Vorteil, dass sie für Nivellierzwecke, insbesondere für eine Höhen- und/oder Querneigungsnivellierung, schnell und präzise verstellbar ist. Dies wird vor allem durch den breit einstellbaren, allerdings aus wenigen Modulen zusammengesetzten Bohlenaufbau der erfindungsgemäßen Bohlenanordnung begünstigt.Finally, the invention relates to a road finisher with a screed arrangement of the type described above. Such a road finisher, in particular the screed arrangement used on it, enables the paving width to be adjusted quickly and precisely without jamming a mixed material template between the basic screed and the extending screed. Furthermore, the screed arrangement offers the practice-relevant advantage that it can be adjusted quickly and precisely for leveling purposes, in particular for leveling the height and/or cross slope is. This is favored above all by the broadly adjustable screed structure of the screed arrangement according to the invention, although composed of few modules.

Im Folgenden werden vorteilhafte Ausführungsbeispiele der Erfindung anhand einer Zeichnung näher erläutert. Im Einzelnen zeigen:

Fig. 1
eine Seitenansicht eines Straßenfertigers,
Fig. 2
eine erfindungsgemäße Bohlenanordnung in schematischer Darstellung,
Fig. 3
eine erfindungsgemäße Bohlenanordnung beim Ausfahren der Ausziehbohlen,
Fig. 4
eine erfindungsgemäße Bohlenanordnung in einer ausgezogenen Stellung der Ausziehbohlen,
Fig. 5
eine perspektivische Ansicht einer Ausziehbohle in isolierter Darstellung,
Fig. 6
eine schematisch dargestellte Variante der erfindungsgemäßen Bohlenanordnung in einer ausgezogenen Stellung der Ausziehbohlen,
Fig. 7
eine schematisch dargestellte weitere Variante der erfindungsgemäßen Bohlenanordnung in einer ausgezogenen Stellung der Ausziehbohlen.
Advantageous exemplary embodiments of the invention are explained in more detail below with reference to a drawing. Show in detail:
1
a side view of a paver,
2
a screed arrangement according to the invention in a schematic representation,
3
a screed arrangement according to the invention when extending the extending screeds,
4
a screed arrangement according to the invention in an extended position of the extending screeds,
figure 5
a perspective view of an extending screed in an isolated representation,
6
a schematically illustrated variant of the screed arrangement according to the invention in an extended position of the extending screeds,
7
a schematically illustrated further variant of the screed arrangement according to the invention in an extended position of the extending screeds.

Gleiche Komponenten sind in den Figuren durchgängig mit gleichen Bezugszeichen versehen.Identical components are provided with the same reference symbols throughout the figures.

Fig. 1 zeigt eine Seitenansicht eines Straßenfertigers 1. Dessen Einbau-Fahrtrichtung ist mit E angegeben. Der Straßenfertiger 1 umfasst eine Zugmaschine 2. Diese weist einen Mischgutbunker 3 auf, in den beispielsweise Asphaltmischgut eingefüllt werden kann. Dieses Mischgut bzw. Einbaumaterial kann durch ein Fördersystem (nicht dargestellt) entgegen der Einbau-Fahrtrichtung E des Straßenfertigers 1 zum hinteren Ende der Zugmaschine 2 transportiert werden. Dort kann es vor einer Bohlenanordnung 4 des Straßenfertigers 1 quer zur Einbau-Fahrtrichtung E verteilt werden. Die Bohlenanordnung 4 kann durch Tragarme 20 nivellierbar an der Zugmaschine 2 montiert sein. Die Bohlenanordnung 2 wird in Einbau-Fahrtrichtung E hinter der Zugmaschine 2 des Straßenfertigers 1 geschleppt. 1 shows a side view of a road finisher 1. Its paving direction of travel is indicated by E. The road finisher 1 includes a tractor 2. This has a mix bunker 3, into which, for example, asphalt mix can be filled. This mixed material or paving material can be transported by a conveyor system (not shown) counter to paving travel direction E of road finisher 1 to the rear end of tractor 2 . There it can be distributed transversely to the paving direction E in front of a screed arrangement 4 of the road finisher 1 . The screed arrangement 4 can be mounted on the towing vehicle 2 so that it can be leveled by support arms 20 . The plank arrangement 2 is towed behind the tractor 2 of the road finisher 1 in the installation travel direction E.

Zwischen der Zugmaschine 2 des Straßenfertigers 1 und der daran geschleppten Bohlenanordnung 4 befindet sich eine Querverteileinrichtung 18 (siehe Figur 2), beispielsweise zwei Querverteilerschnecken, um das zu verarbeitende Einbaumaterial über die Einbaubreite vor der Bohlenanordnung 4 auszubreiten. Die Bohlenanordnung 4 dient insbesondere zum Glätten und/oder Vorverdichten des Mischguts.A transverse distribution device 18 is located between the tractor 2 of the road finisher 1 and the screed arrangement 4 towed thereon (see FIG figure 2 ), for example two transverse distribution screws, to spread the paving material to be processed over the paving width in front of the screed arrangement 4. The screed arrangement 4 serves in particular to smooth and/or pre-compact the mixed material.

In Figur 1 ist der Straßenfertiger 1 als Radfertiger dargestellt. Alternativ dazu könnte der Straßenfertiger 1 ein Raupenfahrwerk aufweisen.In figure 1 the paver 1 is shown as a wheeled paver. As an alternative to this, the road finisher 1 could have a crawler chassis.

Fig. 2 zeigt ein Ausführungsbeispiel der erfindungsgemäßen Bohlenanordnung 4. Die Bohlenanordnung 4 ist vom Typ "Front-Mounted-Screed", bei dem eine erste Ausziehbohle 5 und eine zweite Ausziehbohle 6 in einer Zugrichtung Z der Bohlenanordnung 4 betrachtet vor einer Grundbohle 7 angeordnet sind. Die Zugrichtung Z der Bohlenanordnung 4 entspricht der Einbau-Fahrtrichtung E des Straßenfertigers 1. Die erste Ausziehbohle 5 ist in Zugrichtung Z näher an der Grundbohle 7 positioniert. Die zweite Ausziehbohle 6 ist in Zugrichtung Z ist weiter von der Grundbohle 7 entfernt positioniert als die erste Ausziehbohle 5. Folglich sind die erste Ausziehbohle 5 und die zweite Ausziehbohle 6 in Zugrichtung Z hintereinander angeordnet, sprich nicht in derselben Ebene. Die Grundbohle 7 kann dabei einstückig sein oder aus mehreren Teilen bestehen. Jede der in Figur 2 gezeigten Bohlenteile verfügt über Mittel zum Glätten und (Vor-)Verdichten von Einbaumischgut bzw. Einbaumaterial, beispielsweise in Form von Glättblechen und/oder Stampfern. 2 shows an embodiment of the screed arrangement 4 according to the invention. The screed arrangement 4 is of the "front-mounted screed" type, in which a first extending screed 5 and a second extending screed 6 are arranged in front of a basic screed 7 viewed in a pulling direction Z of the screed arrangement 4. The pulling direction Z of the screed arrangement 4 corresponds to the paving travel direction E of the road finisher 1. The first extending screed 5 is positioned closer to the base screed 7 in the pulling direction Z. The second extending screed 6 is positioned further away from the base screed 7 in the pulling direction Z than the first extending screed 5. Consequently, the first extending screed 5 and the second extending screed 6 are arranged one behind the other in the pulling direction Z, i.e. not in the same plane. The base board 7 can be in one piece or consist of several parts. Each of the figure 2 The screed parts shown have means for smoothing and (pre)compacting paving mix or paving material, for example in the form of smoothing plates and/or tampers.

In Figur 2 ist eine eingezogene Stellung der beiden Ausziehbohlen 5, 6 gezeigt. In Richtung quer zur Zugrichtung Z weisen sowohl die Grundbohle 7 als auch die beiden Ausziehbohlen 5, 6 jeweils im Wesentlichen eine gleiche Arbeitsbreite 16 auf. Um eine größere Einbaubreite zu erhalten, können die Ausziehbohlen 5, 6 in Ausziehrichtung A, d.h. quer zur Zugrichtung Z, gegenüber der Grundbohle 7 verfahren werden. Für das Aus- und Einfahren der Ausziehbohlen 5, 6 sind geeignete Antriebe und Führungssysteme, beispielsweise Hydraulikantriebe, Führungsschienen und/oder Führungsstangen, vorgesehen.In figure 2 a retracted position of the two extending screeds 5, 6 is shown. In a direction transverse to the pulling direction Z, both the base screed 7 and the two extending screeds 5, 6 each have essentially the same working width 16. In order to obtain a larger paving width, the extending screeds 5, 6 can be moved in the direction of extension A, ie transversely to the direction of pull Z, relative to the basic screed 7. Suitable drives and guide systems, for example hydraulic drives, guide rails and/or guide rods, are provided for extending and retracting the extending screeds 5, 6.

An einer Innenseite 9 der ersten Ausziehbohle 5 ein Materialabweiseglied 10 ausgebildet, das in Figur 2 keilförmig und integral mit einem Ausziehbohlenkörper 5' der ersten Ausziehbohle 5 konfiguriert ist. Die Grundbohle 7 weist für die erste Ausziehbohle 5 ein Abschirmelement 13 auf. Das Abschirmelement 13 ist seitlich an einem Grundbohlenkörper 7' vorgesehen. Es könnte beispielsweise als starre Platte 13‴ montiert sein, ggf. als Teil eines an der Grundbohle 7 ausgebildeten Seitenschiebers. Das Abschirmelement 13 bildet eine sich in Zugrichtung Z erstreckende Wandung aus.A material deflecting member 10 is formed on an inner side 9 of the first extending screed 5, which in figure 2 wedge-shaped and configured integrally with an extending screed body 5 ′ of the first extending screed 5 . The base screed 7 has a shielding element 13 for the first extending screed 5 . The shielding element 13 is provided laterally on a base plank body 7'. For example, it could be mounted as a rigid plate 13‴, if necessary as part of a side shifter formed on the base plank 7. The shielding element 13 forms a wall that extends in the pulling direction Z.

Das Materialabweiseglied 10 ermöglicht das Verlagern des Einbaumischguts aus einem Bereich 12 der Bohlenanordnung 4, wenn die Ausziehbohle 5 einfährt. Dadurch kann verhindert werden, dass Einbaumaterial zwischen dem Abschirmelement 13 der Grundbohle 7 und der unmittelbar vorgelagerten Ausziehbohle 5 eingeklemmt wird. Das Abschirmelement 13 verhindert, dass beim Einfahren der Ausziehbohle 5 vor der Grundbohle 7 ausgebreitetes Einbaumaterial seitlich über die Breite der Grundbohle 7 hinausgeschoben wird. An einer Außenseite 11 der Ausziehbohlen 5, 6 ist jeweils ein Seitenschieber 5a, 6a vorgesehen, welcher im Wesentlichen das Maß für die Einbaubreite des neuen Straßenbelags festlegt und verhindert, dass sich das Einbaumischgut über eine gewünschte Breite hinaus verteilt.The material deflecting member 10 enables the paving mix to be displaced from a region 12 of the screed arrangement 4 when the extending screed 5 is retracting. This can prevent paving material from being trapped between the shielding element 13 of the base screed 7 and the extending screed 5 immediately in front of it. The shielding element 13 prevents paving material spread out in front of the base plank 7 when retracting the extending screed 5 from being pushed laterally beyond the width of the base screed 7 . A side shifter 5a, 6a is provided on an outer side 11 of the extending screeds 5, 6, which essentially determines the dimension for the paving width of the new road surface and prevents the paving mix from being distributed beyond a desired width.

Figur 3 zeigt die Bohlenanordnung 4 während des Ausfahrens der Ausziehbohlen 5, 6 in die Ausziehrichtung A um eine größere Einbaubreite zu erzeugen. figure 3 shows the screed arrangement 4 during the extension of the extending screeds 5, 6 in the extension direction A in order to create a larger installation width.

In dem in Figur 3 gezeigten Ausführungsbeispiel weist die zweite Ausziehbohle 6 an ihrer Innenseite 9' auch ein Materialabweiseglied 10' auf. In diesem Ausführungsbeispiel ist das Materialabweiseglied 10' keilförmig und integral mit einem Ausziehbohlenkörper 6' der zweiten Ausziehbohle 6 ausgebildet. Dieses Materialabweiseglied 10' ermöglicht das Verlagern des Einbaumischguts aus einem Bereich 12' der Bohlenanordnung 4, wenn die zweite Ausziehbohle 6 einfährt. Dadurch kann verhindert werden, dass Einbaumaterial zwischen dem Seitenschieber 5a der Ausziehbohle 5 und der Ausziehbohle 6 eingeklemmt wird.in the in figure 3 shown embodiment, the second extending screed 6 on its inside 9 'also a material deflector member 10'. In this embodiment, the material deflecting member 10' is wedge-shaped and integral with an extending screed body 6' of the second extending screed 6. This material deflecting element 10' enables the paving mix to be displaced from a region 12' of the screed arrangement 4 when the second extending screed 6 is retracting. This can prevent paving material from being pinched between the side shifter 5a of the extending screed 5 and the extending screed 6 .

Figur 4 zeigt die Bohlenanordnung 4 in einer ausgezogenen Stellung 17. Wie dargestellt, weist jede Ausziehbohle 5, 6 auf ihrer Außenseite 11 einen Seitenschieber 5a, 6a und auf ihrer Innenseite 9 ein Materialabweiseglied 10, 10' auf. Die ausgefahrenen Ausziehbohlen 5, 6 ermöglichen es, dass die gesamte Arbeitsbreite 16' im Wesentlichen dem Dreifachen einer allein mittels der Grundbohle 7 erzeugbaren Arbeitsbreite entspricht. figure 4 1 shows the screed arrangement 4 in an extended position 17. As shown, each extending screed 5, 6 has a side shifter 5a, 6a on its outer side 11 and a material deflecting member 10, 10' on its inner side 9. The extended extending screeds 5, 6 make it possible for the entire working width 16' to essentially correspond to three times a working width that can be generated solely by means of the basic screed 7.

Eine in Figur 4 gestrichelt dargestellte Variante sieht vor, dass das erste Abschirmelement 13 seitlich mittels eines Scharniers 19 schwenkbar an der Grundbohle 7 angebracht ist. Hierfür kann ein Hydraulikantrieb (nicht gezeigt) aktiviert werden. In einer ersten Stellung 13' ist das Abschirmelement 13 im Wesentlichen parallel zu der Zugrichtung Z gelagert. Das Abschirmelement 13 verhindert beim Einziehen bzw. Einfahren der Ausziehbohle 5, d.h. beim Verfahren der ersten Ausziehbohle 5 in Einziehrichtung A', dass das Einbaumischgut bzw. Einbaumaterial aus dem Bereich 12 der Bohlenanordnung 4 herausfällt. In einer zweiten, gestrichelt dargestellten Stellung 13" wird das Abschirmelement 13 in einem Winkel α von 30° bis 55° zur Zugrichtung Z ausgerichtet, um das Einbaumaterial in Richtung einer (virtuellen) Mittelachse M der Bohlenanordnung 4 zu verlagern. Das Abschirmelement 13 ist vorzugsweise genauso hoch wie die erste Ausziehbohle 5 ausgebildet. Das Abschirmelement 13 erstreckt sich in Zugrichtung Z entsprechend einer Arbeitstiefe 15 der ersten Ausziehbohle 5.one inside figure 4 The variant shown in dashed lines provides that the first shielding element 13 is pivotably attached to the base plank 7 laterally by means of a hinge 19 . A hydraulic drive (not shown) can be activated for this purpose. In a first position 13 ′, the shielding element 13 is mounted essentially parallel to the Z pulling direction. The shielding element 13 prevents the retraction or retraction of the extending screed 5, ie when moving the first Extending screed 5 in the direction of insertion A' that the paving mix or paving material falls out of the area 12 of the screed arrangement 4. In a second position 13", shown in dashed lines, the shielding element 13 is aligned at an angle α of 30° to 55° to the pulling direction Z in order to shift the paving material in the direction of a (virtual) central axis M of the plank arrangement 4. The shielding element 13 is preferably the same height as the first extending screed 5. The shielding element 13 extends in the pulling direction Z corresponding to a working depth 15 of the first extending screed 5.

Ferner zeigt Figur 4, dass die die erste Ausziehbohle 5 für die zweite Ausziehbohle 6 ein Abschirmelement 14 aufweist. Das Abschirmelement 14 verhindert, dass beim Einfahren der Ausziehbohle 6 vor der Ausziehbohle 5 ausgebreitetes Einbaumaterial über die Breite der Ausziehbohle 5 hinausgeschoben wird. Das Abschirmelement 14 ist seitlich am Ausziehbohlenkörper 5' vorgesehen. Es könnte beispielsweise als starre Platte 14'" montiert sein, ggf. als Teil des an der Ausziehbohle 5 ausgebildeten Seitenschiebers 5a vorgesehen sein. Das Abschirmelement 14 bildet eine sich in Zugrichtung Z erstreckende Wandung aus.Furthermore shows figure 4 that the first extending screed 5 has a shielding element 14 for the second extending screed 6 . The shielding element 14 prevents paving material spread out in front of the extending screed 5 from being pushed out over the width of the extending screed 5 when the extending screed 6 is being retracted. The shielding element 14 is provided on the side of the extending screed body 5'. It could, for example, be mounted as a rigid plate 14''', possibly provided as part of the side shifter 5a formed on the extending screed 5. The shielding element 14 forms a wall extending in the pulling direction Z.

Des Weiteren zeigt Figur 4 in gestrichelter Darstellung eine Variante, nach welcher das Abschirmelement 14 an dem Seitenschieber 5a der ersten Ausziehbohle 5 mittels eines Scharniers 19' relativ zu dem Seitenschieber 5a schwenkbar angebracht ist, um das Wegverlagern des Einbaumaterials aus dem Bereich 12' der Bohlenanordnung 4 beim Einziehen der zweiten Ausziehbohle 6 in Einziehrichtung A' weiter zu fördern. Das Abschirmelement 14 kann über einen Hydraulikantrieb (nicht gezeigt) zwischen einer ersten Stellung 14' und einer zweiten Stellung 14" gestellt werden. In der ersten Stellung 14' ist das Abschirmelement 14 im Wesentlichen parallel zu der Zugrichtung Z. In der zweiten Stellung 14" wird das Abschirmelement 14 mit einem Winkel α von 30° bis 55° zur Zugrichtung Z ausgerichtet, um das Einbaumaterial in Richtung der Mittelachse M der Bohlenanordnung 4 zu verlagern, wenn die Bohlenanordnung 4 in Zugrichtung Z vom Straßenfertiger gezogen wird.Furthermore shows figure 4 in dashed representation a variant according to which the shielding element 14 is attached to the side shifter 5a of the first extending screed 5 by means of a hinge 19' so that it can pivot relative to the side shifter 5a in order to prevent the paving material from being moved away from the region 12' of the screed arrangement 4 when the second Extending screed 6 to promote further in the direction of retraction A'. The shielding element 14 can be adjusted between a first position 14′ and a second position 14″ via a hydraulic drive (not shown). In the first position 14′, the shielding element 14 is essentially parallel to the pulling direction Z. In the second position 14″. the shielding element 14 is aligned at an angle α of 30° to 55° to the pulling direction Z in order to displace the paving material in the direction of the central axis M of the plank arrangement 4 when the plank arrangement 4 is pulled in the pulling direction Z by the road finisher.

Die Figur 4 zeigt, dass das Materialabweiseglied 10 zusammen mit dem Abschirmelement 13 sowie das Materialabweiseglied 10' zusammen mit dem Abschirmelement 14 funktionale Einheiten an der Bohlenanordnung 4 ausbilden, die ein Einklemmen von Einbaumaterial zwischen dem Abschirmelement 13 der Grundbohle 7 und der Ausziehbohle 5 sowie zwischen dem Seitenschieber 5a der Ausziehbohle 5 und der weiteren Ausziehbohle 6 verhindern können. Diese funktionalen Einheiten weisen als solche hinsichtlich der Mittelachse M einen in Zugrichtung Z versetzten, spiegelsymmetrischen Aufbau auf.The figure 4 shows that the material deflecting element 10 together with the shielding element 13 and the material deflecting element 10' together with the shielding element 14 form functional units on the screed arrangement 4 which prevent paving material being trapped between the shielding element 13 of the base screed 7 and the extending screed 5 and between the side shifter 5a the extending screed 5 and the other extending screed 6 can prevent. As such, these functional units have a mirror-symmetrical structure offset in the pulling direction Z with respect to the central axis M.

Fig. 5 zeigt eine perspektivische Ansicht einer Ausziehbohle 5, 6, wobei die Arbeitstiefe 15 und eine Arbeitshöhe 14 der Ausziehbohle 5, 6 dargestellt sind. figure 5 shows a perspective view of an extending screed 5, 6, wherein the working depth 15 and a working height 14 of the extending screed 5, 6 are shown.

Figur 6 zeigt ein weiteres Ausführungsbeispiel einer Bohlenanordnung 4 in ausgezogener Stellung 17 der Ausziehbohlen 5, 6, wobei jede Ausziehbohle 5, 6 ein Materialabweiseglied 10, 10' aufweist, und wobei an einem Seitenschieber 7a der Grundbohle 7 und an dem Seitenschieber 5a der ersten Ausziehbohle 5 ein relativ zu den jeweiligen Seitenschiebern 5a, 7a verschiebbar angeordnetes Abschirmelement 22, 22' vorgesehen ist. figure 6 shows a further exemplary embodiment of a screed arrangement 4 in the extended position 17 of the extending screeds 5, 6, with each extending screed 5, 6 having a material deflecting member 10, 10', and with a side slide 7a of the base screed 7 and on the side slide 5a of the first extending screed 5 relative to the respective side slides 5a, 7a arranged displaceable shielding element 22, 22 'is provided.

Figur 7 zeigt ein weiteres Ausführungsbeispiel einer Bohlenanordnung 4 in einer ausgezogenen Stellung 17 der Ausziehbohlen 5, 6, wobei jede Ausziehbohle 5, 6 ein relativ zu den jeweiligen Ausziehbohlenkörpern 5', 6' verschwenkbar ausgebildetes Materialabweiseglied 10", 10'" aufweist. Die Materialabweiseglieder 10", 10'" sind um ein Scharnier 23, 23' verschwenkbar. Hierfür kann ein jeweiliger Hydraulikantrieb (nicht gezeigt) vorgesehen sein. figure 7 shows a further exemplary embodiment of a screed arrangement 4 in an extended position 17 of the extending screeds 5, 6, each extending screed 5, 6 having a material deflecting member 10", 10" designed to be pivotable relative to the respective extending screed bodies 5', 6'. The material deflecting members 10", 10"' can be pivoted about a hinge 23, 23'. A respective hydraulic drive (not shown) can be provided for this purpose.

In den gezeigten Ausführungsformen können die jeweiligen Materialabweiseglieder 10, 10', 10", 10'" und/oder die Abschirmelemente 13, 14, 22, 22' als Heizplatte, insbesondere als Elektro-Heizplatte, ausgebildet sein.In the embodiments shown, the respective material deflection members 10, 10', 10", 10'" and/or the shielding elements 13, 14, 22, 22' can be designed as a heating plate, in particular as an electric heating plate.

Die Figuren 2 - 4, 6 und 7 zeigen seitlich an der Grundbohle 7 einen Bohlenbedienstand B. Der Bohlenbedienstand B ist der ersten Ausziehbohle 5, insbesondere dem Bereich 12, zugewandt positioniert.The Figures 2 - 4 , 6 and 7 show a screed operator's station B on the side of the base screed 7. The screed operator's station B is positioned facing the first extending screed 5, in particular the region 12.

Claims (15)

Bohlenanordnung (4) für einen Straßenfertiger (1) mit einer Grundbohle (7), einer ersten Ausziehbohle (5) und einer zweiten Ausziehbohle (6), wobei die erste Ausziehbohle (5) und die zweite Ausziehbohle (6) in einer Zugrichtung (Z) der Bohlenanordnung (4) vor der Grundbohle (7) angeordnet und quer zur Zugrichtung (Z) relativ zur Grundbohle (7) bewegbar sind, wobei zumindest eine der beiden Ausziehbohlen (5, 6) ein Materialabweiseglied (10, 10") aufweist, das dazu konfiguriert ist, Einbaumaterial in Richtung auf eine Mittelachse (M) zu einer Zugrichtung (Z) der Bohlenanordnung (4) zu verlagern, wenn die Ausziehbohle (5, 6) stationär relativ zur Grundbohle (7) ist,
dadurch gekennzeichnet, dass
die erste Ausziehbohle (5) das Materialabweiseglied (10, 10") aufweist, wobei die zweite Ausziehbohle (6) in Zugrichtung (Z) weiter von der Grundbohle (7) entfernt positioniert ist als die erste Ausziehbohle (5), wobei die Grundbohle (7) ein Abschirmelement (13, 22) aufweist, wobei das Abschirmelement (13, 22) dazu konfiguriert ist, beim Einfahren der ersten Ausziehbohle (5) ein Verlagern des vor der Grundbohle (7) liegende Einbaumaterials seitlich über die Breite der Grundbohle (7) hinaus zu verhindern.Screed arrangement (4) for a road finisher (1) with a base screed (7), a first extending screed (5) and a second extending screed (6), the first extending screed (5) and the second extending screed (6) being pulled in one direction (Z ) of the screed arrangement (4) are arranged in front of the basic screed (7) and can be moved relative to the basic screed (7) transversely to the pulling direction (Z), at least one of the two extending screeds (5, 6) having a material deflecting member (10, 10"), configured to displace paving material toward a central axis (M) to a pull direction (Z) of the screed assembly (4) when the extending screed (5, 6) is stationary relative to the base screed (7),
characterized in that
the first extending screed (5) has the material deflecting member (10, 10"), the second extending screed (6) being positioned further away from the base screed (7) in the pulling direction (Z) than the first extending screed (5), the base screed ( 7) has a shielding element (13, 22), wherein the shielding element (13, 22) is configured such that, when the first extending screed (5) is retracted, the paving material lying in front of the base screed (7) is displaced laterally across the width of the base screed (7 ) addition to prevent. Bohlenanordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Mittelachse (M) parallel zur Zugrichtung (Z) ist, wobei jede Ausziehbohle (5, 6) eine Innenseite (9) und eine Außenseite (11) aufweist, wobei die Innenseite (9) in einer ausgezogenen Position der jeweiligen Ausziehbohle (5, 6) näher an der Mittelachse (M) liegt als der Außenseite (11), wobei das erste Materialabweiseglied (10, 10") an der Innenseite (9) der Ausziehbohle (5, 6) angeordnet ist.Screed arrangement according to Claim 1, characterized in that the central axis (M) is parallel to the pulling direction (Z), each extending screed (5, 6) having an inside (9) and an outside (11), the inside (9) in in an extended position of the respective extending screed (5, 6) is closer to the central axis (M) than to the outside (11), the first material deflector member (10, 10") being arranged on the inside (9) of the extending screed (5, 6). is. Bohlenanordnung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Abschirmelement (13, 22) als eine seitlich am Grundbohlenkörper (7') der Grundbohle (7) befestigte, sich in Zugrichtung (Z) über den Grundbohlenkörper (7') hinaus erstreckende Platte (13"') vorliegt.Plank arrangement according to Claim 1 or 2, characterized in that the shielding element (13, 22) is a plate fastened laterally to the base plank body (7') of the base plank (7) and extending in the pulling direction (Z) beyond the base plank body (7'). (13"') is present. Bohlenanordnung nach Anspruch 3, dadurch gekennzeichnet, dass das Abschirmelement (13, 22) im Wesentlichen gleich hoch wie die erste Ausziehbohle (5) ausgebildet ist und/oder dass sich das Abschirmelement (13, 22) in Zugrichtung (Z) entsprechend einer Arbeitstiefe (15) der ersten Ausziehbohle (5) erstreckt.Screed arrangement according to Claim 3, characterized in that the shielding element (13, 22) is constructed essentially at the same height as the first extending screed (5) and/or that the shielding element (13, 22) extends in the pulling direction (Z) corresponding to a working depth ( 15) of the first extending screed (5). Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Abschirmelement (13, 22) in Zugrichtung (Z) relativ zu der Grundbohle (7) verstellbar und/oder demontierbar ausgebildet ist.Plank arrangement according to one of the preceding claims, characterized in that the shielding element (13, 22) is designed to be adjustable and/or removable in the pulling direction (Z) relative to the base plank (7). Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Abschirmelement (13, 22) als Teil eines Seitenschiebers (7a) der Grundbohle (7) ausgebildet ist.Plank arrangement according to one of the preceding claims, characterized in that the shielding element (13, 22) is designed as part of a side shifter (7a) of the base plank (7). Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die zweite Ausziehbohle (6) ebenfalls ein zum Verlagern von Einbaumaterial konfiguriertes Materialabweiseglied (10', 10'") aufweist.Screed arrangement according to one of the preceding claims, characterized in that the second extending screed (6) also has a material deflecting member (10', 10''') configured for displacing paving material. Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Materialabweiseglied (10, 10', 10", 10‴) und/oder das Abschirmelement (13, 22) beheizbar sind.Plank arrangement according to one of the preceding claims, characterized in that the material deflecting element (10, 10', 10", 10‴) and/or the shielding element (13, 22) can be heated. Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die erste Ausziehbohle (5) für das Materialabweiseglied (10', 10'") der zweiten Ausziehbohle (6) ein Abschirmelement (14, 22') aufweist.Screed arrangement according to one of the preceding claims, characterized in that the first extending screed (5) has a shielding element (14, 22') for the material deflecting member (10', 10''') of the second extending screed (6). Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Materialabweiseglied (10, 10', 10", 10'") starr an der Ausziehbohle (5, 6) ausgebildet ist.Screed arrangement according to one of the preceding claims, characterized in that the material deflector member (10, 10', 10", 10'") is rigidly formed on the extending screed (5, 6). Bohlenanordnung nach einem der vorangehenden Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Materialabweiseglied (10, 10', 10", 10'") relativ zu einem Ausziehbohlenkörper (5', 6') der Ausziehbohle (5, 6) verstellbar ist, vorzugsweise drehbar und/oder verschiebbar ist.Screed arrangement according to one of the preceding claims 1 to 9, characterized in that the material deflector member (10, 10', 10", 10'") is adjustable relative to an extending screed body (5', 6') of the extending screed (5, 6), is preferably rotatable and/or displaceable. Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Materialabweiseglied (10, 10', 10", 10'") in Form einer Pflugstruktur ausgebildet ist.Screed arrangement according to one of the preceding claims, characterized in that the material deflecting member (10, 10', 10", 10'") is in the form of a plow structure. Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Materialabweiseglied (10, 10', 10", 10‴) sich in Draufsicht unter einem Winkel (α) ungleich Null zur Zugrichtung (Z) erstreckt.Plank arrangement according to one of the preceding claims, characterized in that the material deflecting member (10, 10', 10", 10‴) extends at an angle (α) which is not equal to zero to the direction of pull (Z) in plan view. Bohlenanordnung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Bohlenanordnung (4) einen seitlich an der Grundbohle (7), dem Materialabweiseglied (10, 10") der ersten Ausziehbohle (5) zugewandten Bohlenbedienstand (B) aufweist.Screed arrangement according to one of the preceding claims, characterized in that the screed arrangement (4) has a screed operating stand (B) on the side of the base screed (7) and facing the material deflector element (10, 10") of the first extending screed (5). Straßenfertiger (1) mit einer Bohlenanordnung (4) nach einem der vorangehenden Ansprüche.Road finisher (1) with a screed arrangement (4) according to one of the preceding claims.
EP21194687.6A 2021-09-03 2021-09-03 Screed assembly for a road finisher Active EP4144916B1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP21194687.6A EP4144916B1 (en) 2021-09-03 2021-09-03 Screed assembly for a road finisher
PL21194687.6T PL4144916T3 (en) 2021-09-03 2021-09-03 Screed assembly for a road finisher
JP2022137532A JP7210801B1 (en) 2021-09-03 2022-08-31 Screed device for road paver
US17/902,169 US20230071527A1 (en) 2021-09-03 2022-09-02 Screed arrangement for a road paver
CN202222337306.9U CN218813031U (en) 2021-09-03 2022-09-02 Screed plate device for road paver and road paver
CN202211074932.1A CN115748378A (en) 2021-09-03 2022-09-02 Ironing plate device of road paver
BR102022017670-1A BR102022017670B1 (en) 2021-09-03 2022-09-02 PAVING TABLE ARRANGEMENT FOR A ROAD PAVER AND ROAD PAVER

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21194687.6A EP4144916B1 (en) 2021-09-03 2021-09-03 Screed assembly for a road finisher

Publications (2)

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EP4144916A1 true EP4144916A1 (en) 2023-03-08
EP4144916B1 EP4144916B1 (en) 2023-11-01

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EP21194687.6A Active EP4144916B1 (en) 2021-09-03 2021-09-03 Screed assembly for a road finisher

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US (1) US20230071527A1 (en)
EP (1) EP4144916B1 (en)
JP (1) JP7210801B1 (en)
CN (2) CN115748378A (en)
PL (1) PL4144916T3 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259693A (en) * 1990-09-04 1993-11-09 Carlson Paving Products, Inc. Method and apparatus for heating an asphalt paving screed
EP2395151A1 (en) 2010-06-11 2011-12-14 Joseph Vögele AG Screed assembly for a road finisher
EP2201176B1 (en) 2007-09-18 2013-08-21 MARINI S.p.A. Screed for a paver finisher

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5841202Y2 (en) * 1980-01-10 1983-09-17 株式会社新潟鐵工所 leveling device
JP2000192417A (en) 1998-12-24 2000-07-11 Sumitomo Constr Mach Co Ltd Screed device
JP2001049615A (en) 1999-08-06 2001-02-20 Sumitomo Constr Mach Co Ltd Screed apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5259693A (en) * 1990-09-04 1993-11-09 Carlson Paving Products, Inc. Method and apparatus for heating an asphalt paving screed
EP2201176B1 (en) 2007-09-18 2013-08-21 MARINI S.p.A. Screed for a paver finisher
EP2395151A1 (en) 2010-06-11 2011-12-14 Joseph Vögele AG Screed assembly for a road finisher

Also Published As

Publication number Publication date
BR102022017670A2 (en) 2022-10-18
JP7210801B1 (en) 2023-01-23
CN218813031U (en) 2023-04-07
US20230071527A1 (en) 2023-03-09
EP4144916B1 (en) 2023-11-01
JP2023037604A (en) 2023-03-15
PL4144916T3 (en) 2024-03-25
CN115748378A (en) 2023-03-07

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