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EP2377998B1 - Finisseur de route avec un système de couplage pour poutre lisseuse extensible - Google Patents

Finisseur de route avec un système de couplage pour poutre lisseuse extensible Download PDF

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Publication number
EP2377998B1
EP2377998B1 EP11003040.0A EP11003040A EP2377998B1 EP 2377998 B1 EP2377998 B1 EP 2377998B1 EP 11003040 A EP11003040 A EP 11003040A EP 2377998 B1 EP2377998 B1 EP 2377998B1
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EP
European Patent Office
Prior art keywords
unit
screed
coupling
male element
coupled
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Application number
EP11003040.0A
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German (de)
English (en)
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EP2377998A2 (fr
EP2377998A3 (fr
Inventor
Reiner Mueller
Alois Kunz
Frank Rheinbay
Thomas Haubrich
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Marini SpA
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Marini SpA
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Publication of EP2377998A3 publication Critical patent/EP2377998A3/fr
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Publication of EP2377998B1 publication Critical patent/EP2377998B1/fr
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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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/14—Extendable screeds

Definitions

  • the present invention relates to a screed unit for paver finisher according to the characteristics of the pre-characterising part of claim 1.
  • the present invention also relates to a paver finisher machine according to the characteristics of the pre-characterising part of claim 14.
  • side refers to a position on the machine placed sideways with respect to the advancing direction of the same machine in working condition.
  • paver finisher machines also known in lingo as finishers, pavers, etc. are known. These machines consist of two main screeds:
  • each extension unit has an open inner end having two rotatable shafts extending vertically there across.
  • a cylindrical cam is welded to each of the shafts in an off-centre position.
  • Disposed about each of the cams is a steel ring having a bolt extending radially therefrom beyond the inner end of the unit, the bolt being adapted to be connected to a slotted plate in the outer end of an adjacent unit.
  • two adjustable guide studs are present each of which is adapted to mate with the slotted plate to facilitate alignment of adjacent units and provide a limiting surface against which an adjacent unit is drawn when the cams are rotated.
  • a paver screed which has a main screed with two outer side walls, at least one of the side walls being provided with insertion orifices for the releasable mounting of at least one lateral screed extension by means of fastening elements capable of being inserted through the insertion orifices.
  • a screed extension is provided with fastening elements that comprise hydraulic cylinders each of which have a piston that is spring-biased into an initial, retracted position.
  • the cylinders are actuated by hydraulic fluid to displace or extend the piston against the biasing action of the spring.
  • the hydraulic cylinders are connected a hydraulic circuit of the main screed.
  • the piston of each hydraulic cylinder carries a shank capable of being inserted through a proximal insertion orifice and which are preferably provided with an abutment element configured for attaching the cylinder to the sidewall of the main screed.
  • one or more extensions for each side of the base screed generally implies the following operations ( Figs. 3 , 5 , 6 , 13 ) to be carried out both when a screed having fixed width and a screed with extensible sectors are involved:
  • the aim of this invention is to supply a paver finisher machine comprising a fast coupling system of the screed unit extension sectors for the road paving carried out by self-propelled machines and/or by train, allowing to obtain an easy coupling of the same extension sectors in a reliable way. Further aim of the invention is to shorten the installation time of the extension sectors.
  • Fig.1 schematically shows a wheeled tractor (13) and includes:
  • the screed unit (17) is connected with the towing arms (9) by a pin (14) and a fixing system (15), able to change the angle between the arms and the screed unit (17).
  • the screed unit (17) is connected by means of articulations (32) only to the tractor's two towing points (3) to have a floating action. Its arrangement is determined by the equilibrium of the forces acting on it: towing force, material frictional resistance, material bearing capacity.
  • the arrangement of the screed unit (17) in equilibrium conditions shows an angle (16) of the bottom plate (23) with respect to the screed surface; this angle, known as connecting angle, determines the capacity of the screed unit (17) to mount on the material during the screed and pre-compact it.
  • the screed unit (17) is furthermore generally equipped with accessories of known art, as reciprocate motion blades, called tampers (26), having vertical action to facilitate the inserting of the material below the bottom plate (23), and vibrators (28) to give the screed a good finishing, as well as a heating system (not shown) to avoid the adhering of the material to the bottom plate (23) and to the tamper (26) in the case of hot bituminous conglomerate screed.
  • tampers reciprocate motion blades
  • vibrators (28) to give the screed a good finishing
  • a heating system not shown
  • appropriate retaining end plates (12) are provided.
  • the end plates (12) are used to retain the material distributed by the cochleas in front of the screed unit (17) and to convey the material toward the machine longitudinal axis when the screed width tightens in case of screed unit (17) with extensible sectors.
  • extension sectors (18) are applied at the ends of the same screed until the required width is reached.
  • Such extension sectors (18) are generally available with different widths and more extension sectors (18) can be applied one after the other until the limit established by the maker of the screed unit (17) is reached.
  • extension sectors (18), one or more sectors for each side of the main screed (19), as previously explained, generally implies the following operations ( Figs. 3 , 5 , 6 , 13 ) to be carried out both for a fixed width screed unit and for a screed unit with extensible sectors:
  • the object of the invention consists in a system essentially consisting of two blocks ( Figs. 7, 12, 8 ) which make up a coupling:
  • the system provides the following operative steps:
  • the fixing holes (42) are a substantially-vertical developed slot. Also the slot allows, therefore, the reciprocal adjusting position in height and in transverse reciprocal inclination with respect to the advancing direction of the machine (46) of the two units to connect (12, 18, 19) until the alignment of the support bases (23) of the two units to connect (12, 18, 19), keeping in consideration also the wearing conditions of the bottom plates (12) of the two units is reached.
  • the coupling of the coupling means (24) occurs up to an end-stroke condition of the same coupling movement.
  • this condition corresponds to a condition in which the unit to connect that is coupled (12, 18, 19) is in a lower position with respect to the alignment position with the corresponding coupling unit.
  • the unit that is coupled (12, 18, 19) is endowed with such means of regulation/adjustment (22) of the reciprocal position in height and in transverse reciprocal inclination with respect to the machine (46) advancing direction of a unit to connect (12, 18, 19) with respect to the other unit to connect (12, 18, 19).
  • the means of regulation/adjustment (22) are a couple of screws whose end acts in pushing on a backing zone (47) of the frame of the coupling unit.
  • a screw is a front screw placed on the unit to connect (12, 18, 19) at the front with respect to the advancing direction of (46) of the machine, while the other screw is a back screw placed on the unit to connect (12, 18, 19) rearward with respect to the advancing direction (46) of the machine.
  • the screwing action of the screws initially involves the entry in abutment of the end of the screws with the corresponding backing zones (47) of the frame of the coupling unit.
  • the additional screwing of the front screw corresponds to a raising of the forepart of the unit to connect (12, 18, 19) and to a possible inclination of the unit to connect (12, 18, 19) with respect to the coupling unit.
  • the additional screwing of the back screw corresponds to a raising of the back part of the unit to connect (12, 18, 19) and to a possible inclination of the unit to connect (12, 18, 19) with respect to the coupling unit.
  • the successive screwing action on the two back and front screws involves the progressive alignment of the unit to connect (12, 18, 19) with the coupling unit.
  • the present invention relates to, in general, also a screed unit (17) for paver finisher, of the type comprising a main screed (19), end plates (12) and reciprocally lineable extension sectors (18) by means of adjusters (22) and reciprocally fixable by means of screws/bolts (25) and fixing holes (42), of the type in which the main screed (19), the end plates (12) and the extension sectors (18) are reciprocally couplable and lineable by means of a coupling means (24) operating according to the previously described coupling system.
  • the coupling means (24) consists of:
  • the male element (21) is fixed on the main screed (19) or coupling unit and the female element (20) is fixed on the extension sector (18) or coupled unit
  • the female element (20) is rotated of a certain angle with respect to the shown vertical direction, up to be also rotated of 180 degrees with respect to the shown configuration, both in the case of fixing of the female element (20) on the main screed (19), and in the case of fixing of the female element (20) on the extension sector (18).
  • the male element (21) is fixed on the coupling unit and the female element (20) is fixed on the coupled unit;
  • the coupling unit will be selected from the group consisting of main screed (19) and extension sectors (18), while the coupled unit will be selected from the group consisting of extension sectors (18), end plates (12), because, as previously observed, the coupling means (24) is applicable not only in the coupling between main screed (19) and extension sector (18), but also between two adjacent extension sectors (18) and between an extension sector (18) and an end plate (12).
  • a first extension sector (18) includes, on the side-wall opposite with respect to the wall on which there is the coupling element relative to the possible coupling with a previous unit, for example main screed or another extension sector (18), an additional coupling element selected from the group consisting of male element (21) and female element (20).
  • An additional second extension sector (18) will include in correspondence with the side-wall suitable to connect with the side-wall of such first extension sector (18) the other one of the coupling elements selected from the group consisting of male element (21) and female element (20).
  • the inserting of the male element (21) within the seat (36) of the female element (20) will happen according to the direction corresponding to the longitudinal development of the inclined sides (41) and the condition of reciprocal engaging of the male element (21) and of the female element (20) will correspond to a combined condition and pre-alignment of the side-wall of the first extension sector (18) with the corresponding side-wall of the second extension sector (18).
  • the screed unit (17) will include at least one end plate (12) in correspondence with at least one end of the screed unit (17).
  • screed unit (17) one intends in general the main screed (19) if necessary including one or more extension sectors (18).
  • the end plate (12) will include a coupling element selected from the group consisting of male element (21) and female element (20) connecting with the other element selected from the group consisting of male element (21) and female element (20) present in correspondence with the end of the screed unit (17) suitable to connect with the end plate (12).
  • the essential characteristic is that the inserting of the male element (21) within the seat (36) of the female element (20) occurs according to the direction corresponding to the longitudinal development of the inclined sides (41), the condition of reciprocal engaging of male element (21) and female element (20) corresponding to an approaching and pre-alignment condition of the side-wall of the screed unit (17) with the corresponding said side-wall of said extension sector (18).
  • the seat (36) of the female element (20) has a varying section according to one vertical direction (39).
  • the seat (36) has a trapezoidal-shaped section, and the inclined sides (41) of said trapezium progressively approach one another reciprocally in the sequence of sections of the seat (36) taken along the vertical direction (39).
  • the seat (36) is delimited by two guide surfaces (37) reciprocally diverging according to the vertical direction (39) and reciprocally diverging with respect to an orthogonal horizontal direction (40) with respect to the vertical direction (39) and facing the support (38) on which the projections including the guide surfaces (37) are present.
  • the inclined sides (41) of the female element (20) and the sides (35) of the male element (21) have a corresponding shape.
  • the inclined side (35) of the male element (21) and the inclined side (41) of the female element (20) can have, for example, a reciprocally corresponding curvilinear development, or a reciprocally corresponding linear development.
  • said base (33) and the end (34) of the male element (21) are circular, and the male element (21) has a frustum conical shape.
  • the seat (36) of the female element (20) can have a greater depth than the thickness of the male element (21).
  • the base (33) and the end (34) of the male element (21) are circular and connected by a linear development surface in section, namely the male element (21) has a frustum conical shape.
  • the seat (36) of the female element (20) will preferably have a greater depth than the thickness of the male element (21).
  • the reciprocal engaging of male element (21) and female element (20) will occur with a clearance (p) and the clamping of the screws/bolts (25) will cause the spacing of the male element (21) with respect to the female element (20) within the seat (36) of a distance not much minor than said clearance (p).
  • a paver finisher (45) comprising a tractor (13) and a screed unit (17) in which:

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Road Signs Or Road Markings (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Claims (14)

  1. Unité de poutre lisseuse (17) pour finisseur de route (45) pourvue de plaques inférieures (23), comprenant une poutre lisseuse principale (19), des plaques terminales (12) et des secteurs d'extension (18) qui peuvent être réciproquement alignés au moyen de moyens de réglage (22) et qui peuvent être réciproquement bloqués au moyen de moyens de fixation et de serrage avec des vis/boulons (25) dans des trous de fixation (42),
    caractérisée en ce que l'unité de poutre lisseuse (17) comprend en outre des moyens d'accouplement contre-dépouillés (24) pour coupler et aligner réciproquement ladite poutre lisseuse principale (19), les plaques terminales (12) et les secteurs d'extension (18), les moyens d'accouplement étant composés de :
    - un élément mâle (21), formé avec une base (33) et une extrémité (34) qui sont espacées réciproquement et connectées par un côté incliné (35), ladite base (33) ayant une zone de surface qui est supérieure ou égale à la zone de surface de ladite extrémité (34) dudit élément mâle (21) ;
    - un élément femelle (20), comprenant un logement (36) ayant une section en forme trapézoïdale qui est délimitée par des côtés inclinés (41) selon un angle d'inclination correspondant à l'angle d'inclination desdits côtés inclinés (35) dudit élément mâle (21), le développement longitudinal desdits côtés inclinés (41) formant un couple de surfaces de guidage (37) dudit élément mâle (21) dans ledit logement (36) ;
    l'un desdits élément mâle (21) et élément femelle (20) étant fixé en correspondance avec au moins l'un des murs latéraux de ladite unité de poutre lisseuse (17), l'autre desdits élément mâle (21) et élément femelle (20) étant fixé en correspondance avec au moins l'un des murs latéraux dudit secteur d'extension (18), l'insertion dudit élément mâle (21) dans ledit logement (36) dudit élément femelle (20) ayant lieu selon la direction qui correspond au développement longitudinal desdits côtés inclinés (41), la condition d'engagement réciproque dudit élément mâle (21) et dudit élément femelle (20) correspondant à une condition de rapprochement et d'alignement préliminaire dudit mur latéral de ladite unité de poutre lisseuse (17) avec ledit mur latéral correspondant dudit secteur d'extension (18).
  2. Unité de poutre lisseuse (17) pour finisseur de route selon la revendication précédente caractérisée en ce que ledit moyen d'accouplement (24) est un moyen d'accouplement en queue d'aronde.
  3. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 2 caractérisée en ce que lesdits moyens de réglage (22) d'une unité à coupler (12, 18, 19) par rapport à l'autre unité à coupler (12, 18, 19) consistent en des moyens de régulation/réglage de la position réciproque en hauteur et de l'inclination transversale réciproque par rapport à une direction d'avancement de la machine (46) de l'une desdites unités à coupler (12, 18, 19) par rapport à l'autre desdites unités à coupler (12, 18, 19), lesdits moyens de régulation/réglage étant un couple de vis dont l'extrémité opère en poussant sur une zone d'appui (47) du châssis de ladite unité d'accouplement, l'une desdites vis étant une vis antérieure qui est située sur ladite unité à coupler (12, 18, 19) dans une position frontale par rapport à la direction d'avancement de la machine (46), l'autre desdites vis étant une vis postérieure qui est située sur ladite unité à coupler (12, 18, 19) dans une position postérieure par rapport à la direction d'avancement de la machine (46), l'action de vissage desdites vis causant initialement la condition de butée de l'extrémité desdites vis avec la zone d'appui correspondante (47) du châssis de ladite unité d'accouplement, l'action de vissage additionnelle de ladite vis antérieure correspondant à un soulèvement de la partie frontale de ladite unité à coupler (12, 18, 19) et à une possible inclination de ladite unité à coupler (12, 18, 19) par rapport à ladite unité d'accouplement, l'action de vissage additionnelle de ladite vis postérieure correspondant à un soulèvement de la partie postérieure de ladite unité à coupler (12, 18, 19) et à une possible inclination de ladite unité à coupler (12, 18, 19) par rapport à ladite unité d'accouplement, l'action de vissage subséquente sur lesdites deux vis antérieure et postérieure causant l'alignement progressif de ladite unité à coupler (12, 18, 19) avec ladite unité d'accouplement.
  4. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 3 caractérisée en ce que lesdits trous de fixation (42) ont une dimension qui est supérieure à la dimension en section desdits vis/boulons (25), ladite dimension supérieure desdits trous de fixation (42) permettant le réglage de la position réciproque en hauteur et l'inclination transversale réciproque par rapport à la direction d'avancement de la machine (46) desdites deux unités à coupler (12, 18, 19) jusqu'à l'obtention de l'alignement des plaques inférieures (23) desdites deux unités à coupler (12, 18, 19).
  5. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 4 caractérisée en ce que lesdits trous de fixation (42) sont des fentes qui ont un développement substantiellement vertical, lesdites fentes permettant le réglage de la position réciproque en hauteur et l'inclination transversale réciproque par rapport à la direction d'avancement de la machine (46) desdites deux unités à coupler (12, 18, 19) jusqu'à l'obtention de l'alignement des plaques inférieures (23) desdites deux unités à coupler (12, 18, 19).
  6. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 5 caractérisée en ce qu'un premier secteur d'extension (18) comprend, sur le mur latéral opposé par rapport au mur latéral sur lequel il y a un élément d'accouplement relatif à un possible accouplement avec une unité précédente, un élément d'accouplement additionnel sélectionné du groupe composé dudit élément mâle (21) et dudit élément femelle (20), un deuxième secteur d'extension additionnel (18) comprenant l'autre desdits éléments d'accouplement sélectionné du groupe composé dudit élément mâle (21) et dudit élément femelle (20) au mur latéral destiné à être couplé avec le mur latéral dudit premier secteur d'extension (18), l'insertion dudit élément mâle (21) dans ledit logement (36) dudit élément femelle (20) ayant lieu selon la direction qui correspond au développement longitudinal desdits côtés inclinés (41), la condition d'engagement réciproque dudit élément mâle (21) et dudit élément femelle (20) correspondant à une condition de rapprochement et d'alignement préliminaire dudit mur latéral dudit premier secteur d'extension (18) avec ledit mur latéral correspondant dudit deuxième secteur d'extension (18).
  7. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 6 caractérisée en ce qu'elle inclut en outre au moins une plaque d'extrémité (12) en correspondance avec au moins une extrémité de ladite unité de poutre lisseuse (17), ladite plaque terminale comprenant un élément d'accouplement sélectionné du groupe composé dudit élément mâle (21) et dudit élément femelle (20) couplant avec l'autre élément sélectionné du groupe composé dudit élément mâle (21) et dudit élément femelle (20) qui est présent en correspondance avec ladite extrémité de ladite unité de poutre lisseuse (17).
  8. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 7 caractérisée en ce que ledit logement (36) dudit élément femelle (20) a une coupe transversale variable selon une direction verticale (39), ledit logement (36) ayant une section en forme trapézoïdale, les côtés inclinés (41) de ladite forme trapézoïdale s'approchant réciproquement de façon progressive dans la séquence de sections dudit logement (36) prises le long de ladite direction verticale (39), ledit logement (36) étant délimité par deux surfaces de guidage (37) qui sont des surfaces divergentes réciproquement par rapport à ladite direction verticale (39) et qui sont des surfaces réciproquement divergentes par rapport à une direction horizontale (40) qui est orthogonale par rapport à la direction verticale (39) et orientée vers un support (38) sur lequel il y a les projections qui comprennent lesdites surfaces de guidage (37).
  9. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 8 caractérisée en ce que ledit élément mâle (21) est fixé sur une unité d'accouplement et l'élément femelle (20) est fixé sur une unité couplée, ladite unité d'accouplement étant sélectionnée du groupe composé de la poutre lisseuse principale (19) et des secteurs d'extension (18), ladite unité couplée étant sélectionnée du groupe composé de secteurs d'extension (18), plaques terminales (12).
  10. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 9 caractérisée en ce que ledit côté incliné (35) dudit élément mâle (21) et ledit côté incliné (41) dudit élément femelle (20) ont un développement en forme curviligne réciproquement correspondant.
  11. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 10 caractérisée en ce que ledit côté incliné (35) dudit élément mâle (21) et ledit côté incliné (41) dudit élément femelle (20) ont un développement en forme réciproquement correspondant.
  12. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 11 caractérisée en ce que ladite base (33) et ladite extrémité (34) dudit élément mâle (21) ont une forme circulaire et sont connectées par une surface ayant un développement en forme linéaire en section, ledit élément mâle (21) ayant une forme tronconique.
  13. Unité de poutre lisseuse (17) pour finisseur de route selon l'une quelconque des revendications précédentes 1 à 12 caractérisée en ce que ledit logement (36) dudit élément femelle (20) a une profondeur qui est supérieure à l'épaisseur dudit élément mâle (21), l'engagement réciproque dudit élément mâle (21) et dudit élément femelle (20) ayant lieu avec un espace (p), l'action de serrage desdits vis/boulons (25) causant l'espacement dudit élément mâle (21) par rapport audit élément femelle (20) dans ledit logement (36) par une distance qui est supérieure à zéro et inférieure audit espace (p).
  14. Finisseur de route (45) qui comprend un tracteur (13) et une unité de poutre lisseuse (17) caractérisé en ce que ladite unité de poutre lisseuse (17) est faite selon l'une quelconque des revendications précédentes 1 à 13.
EP11003040.0A 2010-04-13 2011-04-12 Finisseur de route avec un système de couplage pour poutre lisseuse extensible Active EP2377998B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUD2010A000074A IT1399575B1 (it) 2010-04-13 2010-04-13 Sistema di aggancio perfezionato per settori di prolunga su banco di stesa per vibrofinitrice stradale, banco di stesa e vibrofinitrice comprendenti detto sistema di aggancio.

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Publication Number Publication Date
EP2377998A2 EP2377998A2 (fr) 2011-10-19
EP2377998A3 EP2377998A3 (fr) 2016-06-29
EP2377998B1 true EP2377998B1 (fr) 2018-06-13

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Publication number Priority date Publication date Assignee Title
DE102013000788A1 (de) 2013-01-17 2014-07-17 Bomag Gmbh Einbaubohle für einen Straßenfertiger und Straßenfertiger mit einer derartigen Einbaubohle
DE102015006250C5 (de) 2014-05-20 2024-11-14 Bomag Gmbh Anbaubohleneinheit für einen Straßenfertiger und Straßenfertiger mit einer solchen Anbaubohleneinheit
EP3085834B1 (fr) * 2015-04-20 2018-02-28 Dynapac GmbH Partie rapportée de poutre lisseuse, poutre lisseuse et finisseuse de route comprenant une poutre lisseuse
CN109577145B (zh) * 2018-11-28 2024-10-15 徐工集团工程机械股份有限公司 熨平板与摊铺机
CN111562762B (zh) * 2019-09-25 2025-02-18 金鹰重型工程机械股份有限公司 一种捣固作业机构自动复位控制系统
US11255057B2 (en) 2020-03-07 2022-02-22 Brian Gallagher Screed assembly for road paving machines, and a method for repaving road surfaces

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US3712189A (en) * 1971-08-11 1973-01-23 Schneider Simpson Screed extension assembly for asphalt paving machine
DE19833394C1 (de) * 1998-07-24 1999-09-30 Abg Allg Baumaschinen Gmbh Einbaubohle für einen Straßenfertiger

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IT1399575B1 (it) 2013-04-19
ITUD20100074A1 (it) 2011-10-14
EP2377998A2 (fr) 2011-10-19
EP2377998A3 (fr) 2016-06-29

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