EP0369095A1 - Tamping beam for a road finisher - Google Patents

Tamping beam for a road finisher Download PDF

Info

Publication number
EP0369095A1
EP0369095A1 EP89103344A EP89103344A EP0369095A1 EP 0369095 A1 EP0369095 A1 EP 0369095A1 EP 89103344 A EP89103344 A EP 89103344A EP 89103344 A EP89103344 A EP 89103344A EP 0369095 A1 EP0369095 A1 EP 0369095A1
Authority
EP
European Patent Office
Prior art keywords
screed
cylinder
cheek
guide
extension
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
EP89103344A
Other languages
German (de)
French (fr)
Other versions
EP0369095B1 (en
Inventor
Dirk Heims
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.)
ABG Werke GmbH
Original Assignee
ABG Werke GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ABG Werke GmbH filed Critical ABG Werke GmbH
Publication of EP0369095A1 publication Critical patent/EP0369095A1/en
Application granted granted Critical
Publication of EP0369095B1 publication Critical patent/EP0369095B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • E01C19/22—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
    • 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 for a paver according to the preamble of claim 1.
  • Asphalt pavers are usually provided with a basic screed as well as with two extending screeds, the latter being extendable to one side of the paver according to the width of the material to be installed. However, widening to twice the width of the base screed is prevented by the necessary guidance and support of the extension screeds.
  • the object of the invention is to provide a screed according to the preamble of claim 1, which makes it possible to widen practically half the width of the base screed on each side.
  • the screed shown comprises a basic screed 1 of a predetermined width, which is arranged on a paver and is connected to two central upright cheeks 2, the main planes of which extend in the direction of travel of the paver.
  • a laterally extending extension cylinder 3 is fastened, these are connected with pressure medium lines (not shown) for their entry and exit the.
  • the two extension cylinders 3 are used to extend extension screeds 4, which are arranged behind the base screed 1 in the retracted state and have half the width of the base screed 1.
  • the extending screeds 4 each comprise an outer movable cheek 5, on which the respective extending cylinder 3 engages, and an inner, movable cheek 8 connected therewith via at least one guide rod 6, which is guided by an outer cheek 7 firmly connected to the base screed 1
  • the cheek 8 receives a bearing bush 9, which engages around the extension cylinder 3 and ensures that the cheek 8 is guided by the extension cylinder 3.
  • the extension cylinder 3 is fixedly connected to the adjacent cheek 7 at the outer end via a flange 3 '.
  • the flange 3 ' is advantageously set back from the outer edge of the base screed 1 by the thickness of the cheek 5 so that when the extendable screed 4 is retracted, the outer edge thereof is aligned with that of the base screed 1.
  • At least two guide rods 10, 11 are arranged between the inner and outer movable cheeks 5, 8 parallel to the axis of the extension cylinder 3 outside the area of the outer fixed cheek 7.
  • the axes of the extension cylinder 3 and the guide rods 6 are expediently offset from one another in the vertical direction, just like the axes of the guide rods 10, 11, in order to achieve greater stability and rigidity.
  • the guide rods 10, 11 guide two guide cheeks 12 arranged at a distance from one another and connected to the extending screed 4, the guide rod 11 being surrounded by a cylinder 13 connected to the guide cheeks 12.
  • the guide rod 11 also carries an annular piston 14, while the cylinder 13 is provided on both sides to the annular piston 14 with pressure medium supply lines 15 for acting on both sides of the annular piston 14 to move the cylinder 13 and thus the extension screed 4 relative to the guide rod 11.
  • the stroke H of the cylinder 13 corresponds to the distance between the inside of the inner cheek 8 and the outside of the base screed (1) in the extended state of the extendable screed 4 plus half the thickness of the middle cheek 2, so that the extendable screed 4 is exactly half the width of the base screed 1 can be extended.
  • the cylinder 13 has at both ends in each case an inwardly directed annular stop 16 encompassing the guide rod 11 with a smaller diameter than the inside diameter of the cylinder 13.
  • the stop 16 located on the outside end of the cylinder 13 acts with the annular piston 14 to limit the stroke of the Cylinder 13 in the direction of retraction together. So that the cylinder 13 can extend from the retracted position, the corresponding pressure medium supply line 15 opens in the area between the stop 16 and the cylinder inner wall.
  • the guide rod 11 carries a further ring 17, which serves as a stop to limit the stroke of the cylinder 13 in the extension direction and cooperates with the stop 16 of the cylinder 13 at its inward end.
  • the ring 17 and the stop 16 have the same outside diameter.
  • the cheek 5 can also be used instead of the ring 17 as a stop for the movement of the cylinder 13 relative to the guide rod 11.
  • the cheek 8 can be used instead of the annular piston 14 as a stop in the retracting direction.
  • a sequential circuit for successive actuation can be provided for the two cylinders 3, 13, but this can also be dispensed with. Then the cylinder with the least friction moves in or out first.
  • the guide cheeks 12 are expediently guided via bearing bushes 18 opposite the guide rod or rods 10.
  • the cheeks 7, 8 and 12 are designed such that the guide rods 6 and the cylinder 3 only extend between the fixed cheek 7 and the outer movable cheek 5, while the guide rods 10, 11 only extend between the movable cheeks 5, 8 and the movement of the guide cheeks 12 is not hindered by the cheek 7. Likewise, retracting the screed 4 is not hindered by the outer cheek 5.
  • the cheeks 2 are not absolutely necessary in this solution, since the forces can be taken over by the outer fixed cheek 7.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)

Abstract

Die Erfindung betrifft eine Einbaubohle für einen Straßenfertiger, umfassend eine Grundbohle (1), die zwei mittlere stehende Wangen (2) aufweist, an denen an jeder Seite ein Ausfahrzylinder (3) angebracht ist, der eine innere bewegliche Wange (8) einer Ausfahrbohle (4) zur seitlichen Verlängerung der Grundbohle (1) führt und an einer äußeren beweglichen Wange (5) zum Ausfahren angreift, wobei jeweils zwischen innerer und äußerer beweglicher Wange (5, 8) wenigstens eine Führungsstange (6) parallel zur Zylinderachse vorgesehen ist, die durch eine äußere, mit der Grundbohle (1) fest verbundene Wange (7) geführt ist. Damit die Ausfahrbohlen um die halbe Breite der Grundbohle ausfahrbar sind, ist vorgesehen, daß zwischen innerer und äußerer beweglicher Wange (5, 8) wenigstens zwei Führungsstangen (10, 11) parallel zur Zylinderachse außerhalb des Bereichs der äußeren feststehenden Wange (7) angeordnet sind, die zwei mit Abstand zueinander angeordnete, mit der Ausfahrbohle (4) verbundene Führungswangen (12) führen, wobei eine Führungstange (11) von einem mit den Führungswangen (12) verbundenen Zylinder (13) umgeben sowie mit einem beidseitig beaufschlagbaren Ringkolben (14) versehen ist und der Hub des Zylinders (13) im wesentlichen dem Abstand zwischen der Innenseite der inneren Wange (8) und der Außenseite der Grundbohle (1) im ausgefahrenen Zustand der Ausfahrbohle (4) entspricht.The invention relates to a screed for a road paver, comprising a base screed (1) which has two central upright cheeks (2), on each side of which an extension cylinder (3) is attached, which has an inner movable cheek (8) of an extension screed ( 4) leads to the lateral extension of the base screed (1) and engages on an outer movable cheek (5) for extending, wherein at least one guide rod (6) is provided parallel to the cylinder axis between the inner and outer movable cheek (5, 8) is guided through an outer cheek (7) firmly connected to the base screed (1). So that the extending screeds can be extended by half the width of the basic screed, it is provided that between the inner and outer movable cheeks (5, 8) at least two guide rods (10, 11) are arranged parallel to the cylinder axis outside the area of the outer fixed cheek (7) which guide two spaced-apart guide cheeks (12) connected to the extending screed (4), a guide bar (11) being surrounded by a cylinder (13) connected to the guide cheeks (12) and an annular piston (14) which can be loaded on both sides is provided and the stroke of the cylinder (13) essentially corresponds to the distance between the inside of the inner cheek (8) and the outside of the base screed (1) in the extended state of the extension screed (4).

Description

Die Erfindung betrifft eine Einbaubohle für einen Straßenfer­tiger nach dem Oberbegriff des Anspruchs 1.The invention relates to a screed for a paver according to the preamble of claim 1.

Straßenfertiger werden üblicherweise mit einer Grundbohle so wie mit zwei Ausfahrbohlen versehen, wobei letztere jeweils nach einer Seite des Straßenfertigers entsprechend der Breite des einzubauenden Materials ausfahrbar sind. Jedoch wird hierbei einer Verbreiterung auf die doppelte Breite der Grundbohle durch die notwendige Führung und Abstützung der Ausfahrbohlen verhindert.Asphalt pavers are usually provided with a basic screed as well as with two extending screeds, the latter being extendable to one side of the paver according to the width of the material to be installed. However, widening to twice the width of the base screed is prevented by the necessary guidance and support of the extension screeds.

Aufgabe der Erfindung ist es, eine Einbaubohle nach dem Ober­begriff des Anspruchs 1 zu schaffen, die es ermöglicht, nach jeder Seite praktisch um die halbe Breite der Grundbohle verbreitert zu werden.The object of the invention is to provide a screed according to the preamble of claim 1, which makes it possible to widen practically half the width of the base screed on each side.

Diese Aufgabe wird entsprechend dem kennzeichnenden Teil des Anspruchs 1 gelöst.This object is achieved in accordance with the characterizing part of claim 1.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschreibung und den Unteransprüchen zu entnehmen.Further embodiments of the invention can be found in the following description and the subclaims.

Die Erfindung wird nachstehend anhand des in den beigefügten Abbildungen dargestellten Ausführungsbeispiels näher erläutert.

  • Fig. 1 zeigt in Draufsicht schematisiert und ausschnittweise eine Einbaubohle.
  • Fig. 2 zeigt eine Seitenansicht der Einbaubohle von Fig. 1.
The invention is explained below with reference to the embodiment shown in the accompanying figures.
  • Fig. 1 shows a top view of a screed schematically and in sections.
  • FIG. 2 shows a side view of the screed from FIG. 1.

Die dargestellte Einbaubohle umfaßt eine Grundbohle 1 vorbe­stimmter Breite, die an einem Straßenfertiger angeordnet und mit zwei mittleren stehenden Wangen 2 verbunden ist, deren Hauptebenen sich in Fahrtrichtung des Straßenfertigers erstrecken. An jeder Seite der mittleren Wangen 2 ist ein sich seitlich nach außen erstreckender Ausfahrzylinder 3 befestigt, diese sind mit nicht dargestellten Druckmittelleitungen zu deren Ein- bzw. Ausfahren verbun­ den. Die beiden Ausfahrzylinder 3 dienen zum Ausfahren von Ausfahrbohlen 4, die in eingefahrenem Zustand hinter der Grundbohle 1 angeordnet sind und die halbe Breite der Grundbohle 1 besitzen.The screed shown comprises a basic screed 1 of a predetermined width, which is arranged on a paver and is connected to two central upright cheeks 2, the main planes of which extend in the direction of travel of the paver. On each side of the middle cheeks 2 a laterally extending extension cylinder 3 is fastened, these are connected with pressure medium lines (not shown) for their entry and exit the. The two extension cylinders 3 are used to extend extension screeds 4, which are arranged behind the base screed 1 in the retracted state and have half the width of the base screed 1.

Die Ausfahrbohlen 4 umfassen jeweils eine äußere bewegliche Wange 5, an der der jeweilige Ausfahrzylinder 3 angreift, und eine damit über wenigstens eine Führungsstange 6, die durch eine äußere mit der Grundbohle 1 fest ver­bundene Wange 7 geführt ist, verbundene, innere, bewegliche Wange 8. Die Wange 8 nimmt eine Lagerbuchse 9 auf, die den Ausfahrzylinder 3 umgreift und die Führung der Wange 8 durch den Ausfahrzylinder 3 gewährleistet. Der Ausfahrzy­linder 3 ist am äußeren Ende über einen Flansch 3′ mit der benachbarten Wange 7 fest verbunden. Der Flansch 3′ ist gegenüber dem Außenrand der Grundbohle 1 zweckmäßigerweise um die Stärke der Wange 5 zurückversetzt, damit bei einge­fahrener Ausfahrbohle 4 die Außenkante hiervon mit derjenigen der Grundbohle 1 fluchtet.The extending screeds 4 each comprise an outer movable cheek 5, on which the respective extending cylinder 3 engages, and an inner, movable cheek 8 connected therewith via at least one guide rod 6, which is guided by an outer cheek 7 firmly connected to the base screed 1 The cheek 8 receives a bearing bush 9, which engages around the extension cylinder 3 and ensures that the cheek 8 is guided by the extension cylinder 3. The extension cylinder 3 is fixedly connected to the adjacent cheek 7 at the outer end via a flange 3 '. The flange 3 'is advantageously set back from the outer edge of the base screed 1 by the thickness of the cheek 5 so that when the extendable screed 4 is retracted, the outer edge thereof is aligned with that of the base screed 1.

Zwischen innerer und äußerer beweglicher Wange 5, 8 sind wenigstens zwei Führungsstangen 10, 11 parallel zur Achse des Ausfahrzylinders 3 außerhalb des Bereichs der äußeren feststehenden Wange 7 angeordnet. Die Achsen des Aus­fahrzylinders 3 und der Führungsstangen 6 sind zweckmäßigerweise ebenso wie die Achsen der Führungstangen 10, 11 zur Erzielung einer größeren Stabilität und Steifigkeit in vertikaler Richtung zueinander versetzt.At least two guide rods 10, 11 are arranged between the inner and outer movable cheeks 5, 8 parallel to the axis of the extension cylinder 3 outside the area of the outer fixed cheek 7. The axes of the extension cylinder 3 and the guide rods 6 are expediently offset from one another in the vertical direction, just like the axes of the guide rods 10, 11, in order to achieve greater stability and rigidity.

Die Führungsstangen 10, 11 führen zwei mit Abstand zueinander angeord­nete, mit der Ausfahrbohle 4 verbundene Führungswangen 12, wobei die Füh­rungsstange 11 von einem mit den Führungswangen 12 verbundenen Zylinder 13 umgeben ist. Die Führungsstange 11 trägt ferner einen Ringkolben 14, während der Zylinder 13 beidseitig zum Ringkolben 14 mit Druckmittelzuleitungen 15 zum beidseitigen Beaufschlagen des Ringkolbens 14 zum Verfahren des Zylinders 13 und damit der Ausfahrbohle 4 gegenüber der Führungstange 11 versehen ist.The guide rods 10, 11 guide two guide cheeks 12 arranged at a distance from one another and connected to the extending screed 4, the guide rod 11 being surrounded by a cylinder 13 connected to the guide cheeks 12. The guide rod 11 also carries an annular piston 14, while the cylinder 13 is provided on both sides to the annular piston 14 with pressure medium supply lines 15 for acting on both sides of the annular piston 14 to move the cylinder 13 and thus the extension screed 4 relative to the guide rod 11.

Der Hub H des Zylinders 13 entspricht dem Abstand zwischen der Innen­seite der inneren Wange 8 und der Außenseite der Grundbohle (1) im ausgefah­renen Zustand der Ausfahrbohle 4 plus die halbe Stärke der mittleren Wange 2, damit die Ausfahrbohle 4 genau um die halbe Breite der Grundbohle 1 ausgefah­ren werden kann.The stroke H of the cylinder 13 corresponds to the distance between the inside of the inner cheek 8 and the outside of the base screed (1) in the extended state of the extendable screed 4 plus half the thickness of the middle cheek 2, so that the extendable screed 4 is exactly half the width of the base screed 1 can be extended.

Der Zylinder 13 besitzt an beiden Enden stirnwandseitig jeweils einen einwärts gerichteten ringförmigen, die Führungsstange 11 umgreifenden Anschlag 16 mit geringerem Durchmesser als der Innendurchmesser des Zylinders 13. Der am außenseitigen Ende des Zylinders 13 befindliche Anschlag 16 wirkt mit dem Ringkolben 14 zur Begrenzung des Hubs des Zylinders 13 in Einfahrrichtung zu­ sammen. Damit der Zylinder 13 aus der eingefahrenen Position ausfahren kann, mündet die entsprechende Druckmittelzuleitung 15 in dem Bereich zwischen An­schlag 16 und Zylinderinnenwand.The cylinder 13 has at both ends in each case an inwardly directed annular stop 16 encompassing the guide rod 11 with a smaller diameter than the inside diameter of the cylinder 13. The stop 16 located on the outside end of the cylinder 13 acts with the annular piston 14 to limit the stroke of the Cylinder 13 in the direction of retraction together. So that the cylinder 13 can extend from the retracted position, the corresponding pressure medium supply line 15 opens in the area between the stop 16 and the cylinder inner wall.

Die Führungsstange 11 trägt einen weiteren Ring 17, der als Anschlag zur Begrenzung des Hubs des Zylinders 13 in Ausfahrrichtung dient und mit dem An­schlag 16 des Zylinders 13 an dessen einwärtigem Ende zusammenwirkt. Der Ring 17 und der Anschlag 16 haben gleichen Außendurchmesser. Beim Beaufschlagen des Zylinders 13 zum Einfahren wird zunächst nur ein Teil der druckbeaufschlagba­ren Fläche wirksam, da ein Teil durch den Ring 17 abgedeckt wird. Erst nach dem Ablüften des Anschlags 16 vom Ring 17 wird die volle Fläche wirksam. Hierdurch ergibt sich ebenso wie im Falle des Beginns des Ausfahrens, in dem ebenfalls zunächst nur eine kleinere Fläche wirksam wird, ein sanfter Bewe­gungsbeginn.The guide rod 11 carries a further ring 17, which serves as a stop to limit the stroke of the cylinder 13 in the extension direction and cooperates with the stop 16 of the cylinder 13 at its inward end. The ring 17 and the stop 16 have the same outside diameter. When the cylinder 13 is actuated for retraction, only a part of the area which can be pressurized is initially effective, since part is covered by the ring 17. The full surface only becomes effective after the stop 16 has been vented from the ring 17. As in the case of the start of the extension, in which only a smaller area is initially effective, this results in a gentle start to the movement.

Als Anschlag für die Bewegung des Zylinders 13 gegenüber der Führungs­stange 11 kann auch anstelle des Rings 17 die Wange 5 verwendet werden. Ebenso kann als Anschlag in Einfahrrichtung die Wange 8 anstelle des Ringkolbens 14 verwendet werden.The cheek 5 can also be used instead of the ring 17 as a stop for the movement of the cylinder 13 relative to the guide rod 11. Likewise, the cheek 8 can be used instead of the annular piston 14 as a stop in the retracting direction.

Für die beiden Zylinder 3, 13 kann eine Folgeschaltung zum aufeinander­folgenden Betätigen vorgesehen sein, jedoch kann auch darauf verzichtet wer­den. Dann fährt der Zylinder mit der geringsten Reibung zuerst ein bzw. aus.A sequential circuit for successive actuation can be provided for the two cylinders 3, 13, but this can also be dispensed with. Then the cylinder with the least friction moves in or out first.

Zweckmäßigerweise sind die Führungswangen 12 über Lagerbuchsen 18 ge­genüber der oder den Führungsstangen 10 geführt.The guide cheeks 12 are expediently guided via bearing bushes 18 opposite the guide rod or rods 10.

Wie aus Fig. 2 ersichtlich ist, sind die Wangen 7, 8 und 12 derart aus­gebildet, daß sich die Führungsstangen 6 und der Zylinder 3 nur zwischen der feststehenden Wange 7 und der äußeren beweglichen Wange 5 erstrecken, während sich die Führungstangen 10, 11 nur zwischen den beweglichen Wangen 5, 8 erstrecken und die Bewegung der Führungswangen 12 nicht durch die Wange 7 be­hindert wird. Ebenso wird das Einfahren der Ausfahrbohle 4 nicht durch die äußere Wange 5 behindert.As can be seen from Fig. 2, the cheeks 7, 8 and 12 are designed such that the guide rods 6 and the cylinder 3 only extend between the fixed cheek 7 and the outer movable cheek 5, while the guide rods 10, 11 only extend between the movable cheeks 5, 8 and the movement of the guide cheeks 12 is not hindered by the cheek 7. Likewise, retracting the screed 4 is not hindered by the outer cheek 5.

Die Wangen 2 sind bei dieser Lösung nicht zwingend erforder­lich, da die Kräfte von der äußeren feststehenden Wange 7 übernommen werden können.The cheeks 2 are not absolutely necessary in this solution, since the forces can be taken over by the outer fixed cheek 7.

Claims (5)

1. Einbaubohle für einen Straßenfertiger, umfassend eine mit­tig geteilte Grundbohle (1), deren jeweilige linke oder rechte Hälfte eine mittlere stehende Wange (2) aufweist, an der an jeder Seite ein Ausfahrzylinder (3) angebracht ist, der eine innere bewegliche Wange (8) einer Ausfahrbohle (4) zur seitlichen Verlängerung der Grundbohle (1) führt und an einer äußeren beweglichen Wange (5) zum Ausfahren angreift, wobei jeweils zwischen innerer und äußerer beweglicher Wange (5, 8) wenigstens eine Führungsstange (6) parallel zur Zylinderachse vorgesehen ist, die durch eine äußere, mit der Grundbohle (1) fest verbundene Wange (7) geführt ist, dadurch gekennzeichnet, daß zwischen innerer und äußerer beweglicher Wange (5, 8) wenigstens zwei Führungsstangen (10, 11) parallel zur Zylinderachse außerhalb des Be­reichs der äußeren feststehenden Wange (7) angeordnet sind, die zwei mit Abstand zueinander angeordnete, mit der Ausfahrbohle (4) verbun­dene Führungswangen (12) führen, wobei eine Führungstange (11) von einem mit den Führungswangen (12) verbundenen Zylinder (13) umgeben sowie mit einem beidseitig beaufschlagbaren Ringkolben (14) versehen ist und der Hub des Zylinders (13) im wesentlichen dem Abstand zwi­schen der Innenseite der inneren Wange (8) und der Außenseite der Grundbohle (1) im ausgefahrenen Zustand der Ausfahrbohle (4) ent­spricht.1. Screed for a road paver, comprising a centrally divided base screed (1), the respective left or right half of which has a central standing cheek (2), on which an extension cylinder (3) is attached on each side, which has an inner movable cheek ( 8) an extension screed (4) leads to the lateral extension of the base screed (1) and engages on an outer movable cheek (5) to extend, with at least one guide rod (6) parallel to each of the inner and outer movable cheek (5, 8) Cylinder axis is provided which is guided through an outer cheek (7) which is firmly connected to the base screed (1), characterized in that at least two guide rods (10, 11) parallel to the cylinder axis between the inner and outer movable cheek (5, 8) are arranged outside the region of the outer fixed cheek (7) which guides two guide cheeks (12) which are arranged at a distance from one another and are connected to the extending screed (4) n, a guide rod (11) being surrounded by a cylinder (13) connected to the guide cheeks (12) and provided with an annular piston (14) which can be acted upon on both sides, and the stroke of the cylinder (13) is essentially the distance between the inside of the inside Cheek (8) and the outside of the base screed (1) in the extended state of the extension screed (4) corresponds. 2. Einbaubohle nach Anspruch 1, dadurch gekennzeichnet, daß die Führungstangen (6 und/oder 10, 11) in Vertikalrichtung gegenei­nander versetzt angeordnet sind.2. Screed according to claim 1, characterized in that the guide rods (6 and / or 10, 11) are arranged offset from one another in the vertical direction. 3. Einbaubohle nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Ringkolben (14) der Führungstange (11) einen Anschlag für die Begrenzung des Hubs des Zylinders (13) in Einfahrrichtung bildet.3. Screed according to claim 1 or 2, characterized in that the annular piston (14) of the guide rod (11) forms a stop for limiting the stroke of the cylinder (13) in the entry direction. 4. Einbaubohle nach Anspruch 3, dadurch gekennzeichnet, daß der Zylinder (13) einen die Führungstange (11) umgreifenden, mit dem Ringkolben (14) in der eingefahrenen Position in Eingriff stehenden Anschlag (16) mit einem geringeren Außendurchmesser als der Innen­durchmesser des Zylinders (13) aufweist und eine Druckmittelzuleitung (15) in den Bereich zwischen Anschlag (16) und Innenwandung des Zy­linders (13) mündet.4. Screed according to claim 3, characterized in that the cylinder (13) engages around the guide rod (11), with the annular piston (14) in the retracted position engaging stop (16) with a smaller outside diameter than the inside diameter of the cylinder (13) and a pressure medium supply line (15) opens into the area between the stop (16) and the inner wall of the cylinder (13). 5. Einbaubohle nach einem der Ansprüche 1 bis 4, dadurch ge­kennzeichnet, daß die Führungstange (11) einen gegenüber dem Innen­durchmesser des Zylinders (13) im Durchmesser kleineren Ring (17) trägt, der in der ausgefahrenen Position der Ausfahrbohle (4) mit ei­nem inneren ringförmigen Anschlag (16) des Zylinders (13) von gleichem Durchmesser wie der Ring (17) in Eingriff steht.5. Screed according to one of claims 1 to 4, characterized in that the guide rod (11) carries a smaller than the inner diameter of the cylinder (13) in diameter ring (17) which in the extended position of the extending screed (4) with a inner annular stop (16) of the cylinder (13) of the same diameter as the ring (17) is engaged.
EP89103344A 1988-11-10 1989-02-25 Tamping beam for a road finisher Expired - Lifetime EP0369095B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3838157A DE3838157A1 (en) 1988-11-10 1988-11-10 SCREED FOR A PAVER
DE3838157 1988-11-10

Publications (2)

Publication Number Publication Date
EP0369095A1 true EP0369095A1 (en) 1990-05-23
EP0369095B1 EP0369095B1 (en) 1991-12-18

Family

ID=6366902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89103344A Expired - Lifetime EP0369095B1 (en) 1988-11-10 1989-02-25 Tamping beam for a road finisher

Country Status (5)

Country Link
US (1) US4991995A (en)
EP (1) EP0369095B1 (en)
JP (1) JP2721564B2 (en)
DE (2) DE3838157A1 (en)
ES (1) ES2028387T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0686729A3 (en) * 1994-06-08 1996-02-28 Dynapac Gmbh Screed for a road finisher

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2681885B1 (en) * 1991-10-01 1998-09-04 Colas Sa DEVICE FOR SPREADING AN EMULSION FOR HANGING BUTUMINOUS COATINGS OR THE LIKE, AND PAVEMENT CONSTRUCTION MACHINE COMPRISING SUCH A DEVICE.
DE4208883C2 (en) * 1992-01-09 1998-11-05 Svedala Strassenfertiger Gmbh Screed for pavers
US5222829A (en) * 1992-03-13 1993-06-29 Caterpillar Paving Products Inc. Screed assembly for an asphalt paving machine
DE19827902B4 (en) * 1998-06-23 2008-03-13 Joseph Voegele Ag screed
EP1596006B1 (en) * 2004-05-10 2010-05-05 Caterpillar Paving Products Inc. Extendable paving screed
US11105048B2 (en) * 2018-10-17 2021-08-31 Caterpillar Paving Products Inc. Screed dual carriage extender tube orientation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2024900A (en) * 1978-07-07 1980-01-16 Blaw Knox Ltd Road finishers
GB1570839A (en) * 1977-11-11 1980-07-09 Hoes K G Devices for adjusting the working width of road making machines
EP0109639A1 (en) * 1982-11-16 1984-05-30 Domenico Domenighetti A road finisher with an improved smoother

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1014783A (en) * 1974-10-12 1977-08-02 Ernst-August Schrader Device for the adjustment of the working width of road finishers
US3957384A (en) * 1974-11-12 1976-05-18 Bower Industries, Inc. Screed extensions for paving machines
JPS5830815Y2 (en) * 1979-05-14 1983-07-07 株式会社新潟鐵工所 Leveling equipment for asphalt finishing, etc.
US4272213A (en) * 1979-07-10 1981-06-09 Blaw Knox Limited Extendible screeds
US4379653A (en) * 1981-06-01 1983-04-12 White Consolidated Industries, Inc. Asphalt paver with telescoping screed
US4702642A (en) * 1986-07-25 1987-10-27 Cedarapids, Inc. Extensible screed assembly for a bituminous paver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1570839A (en) * 1977-11-11 1980-07-09 Hoes K G Devices for adjusting the working width of road making machines
GB2024900A (en) * 1978-07-07 1980-01-16 Blaw Knox Ltd Road finishers
EP0109639A1 (en) * 1982-11-16 1984-05-30 Domenico Domenighetti A road finisher with an improved smoother

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0686729A3 (en) * 1994-06-08 1996-02-28 Dynapac Gmbh Screed for a road finisher
US5725325A (en) * 1994-06-08 1998-03-10 Svedala Strassenfertiger Gmbh Laying plank for a road finisher

Also Published As

Publication number Publication date
JP2721564B2 (en) 1998-03-04
EP0369095B1 (en) 1991-12-18
US4991995A (en) 1991-02-12
DE3838157A1 (en) 1990-05-17
DE58900593D1 (en) 1992-01-30
ES2028387T3 (en) 1992-07-01
JPH02178404A (en) 1990-07-11

Similar Documents

Publication Publication Date Title
DE69128042T2 (en) Loading platform with automatic barrier for vehicles
EP0367894B1 (en) Tamping beam for a road finisher
DE3125603A1 (en) TELESCOPIC BOOM
DE29824453U1 (en) Crane with a telescopic boom
DE19824671A1 (en) Crane with a telescopic boom
DE1928712A1 (en) Construction machine, in particular civil engineering machine
EP0367893B1 (en) Tamping beam for a road finisher
EP0369095B1 (en) Tamping beam for a road finisher
DE2052565A1 (en) Device on, with two m a frame retractable and extendable fork legs provided lifting fork from equipped forklifts
EP0686729A2 (en) Screed for a road finisher
DE2853108C2 (en) Attachment for a lift truck with two adjustment devices
EP1031660B1 (en) Screed
EP0886592B1 (en) Vertically adjustable support for semitrailers
DE2853109C2 (en)
EP0389781A1 (en) Lifting platform
DE2649524A1 (en) TELESCOPIC DEVICE
DE3125433C2 (en)
DE926932C (en) Lifting platform for motor vehicles
EP0001379B1 (en) Drum brake
EP0490094B1 (en) Dismountable bridge and vehicle for placing the bridge
DE2339682A1 (en) Mechanically locked hydraulic piston - combine harvester has hydraulic piston for raising harvesting bed for transportation between sites
DE2508956B2 (en) Adjusting device for runners of mining machines in underground mining, in particular of roller cutting machines
DE2949005C2 (en)
DE3210263C1 (en) Device for lorries for hydraulically swivelling rotatable platforms
DE19700459A1 (en) Height-adjustable support unit for semi-trailer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19900410

17Q First examination report despatched

Effective date: 19910213

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB IT LI NL SE

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 58900593

Country of ref document: DE

Date of ref document: 19920130

ET Fr: translation filed
GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2028387

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
EAL Se: european patent in force in sweden

Ref document number: 89103344.1

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20080215

Year of fee payment: 20

Ref country code: ES

Payment date: 20080228

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20080214

Year of fee payment: 20

Ref country code: GB

Payment date: 20080220

Year of fee payment: 20

Ref country code: IT

Payment date: 20080220

Year of fee payment: 20

Ref country code: SE

Payment date: 20080214

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20080421

Year of fee payment: 20

Ref country code: FR

Payment date: 20080214

Year of fee payment: 20

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20090224

EUG Se: european patent has lapsed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20090226

NLV7 Nl: ceased due to reaching the maximum lifetime of a patent

Effective date: 20090225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090225

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090224

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20090226