EP0493889B1 - Fertiger - Google Patents

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Publication number
EP0493889B1
EP0493889B1 EP19910311315 EP91311315A EP0493889B1 EP 0493889 B1 EP0493889 B1 EP 0493889B1 EP 19910311315 EP19910311315 EP 19910311315 EP 91311315 A EP91311315 A EP 91311315A EP 0493889 B1 EP0493889 B1 EP 0493889B1
Authority
EP
European Patent Office
Prior art keywords
screed plate
guide
extension
guide tube
extension screed
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.)
Expired - Lifetime
Application number
EP19910311315
Other languages
English (en)
French (fr)
Other versions
EP0493889A1 (de
Inventor
Dennis Anthony Hills
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.)
Blaw Knox Co
Original Assignee
Blaw Knox Co
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 Blaw Knox Co filed Critical Blaw Knox Co
Publication of EP0493889A1 publication Critical patent/EP0493889A1/de
Application granted granted Critical
Publication of EP0493889B1 publication Critical patent/EP0493889B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • E01C19/22—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

  • This invention relates to a paving machine for laying concrete and pulverulant materials such as asphalt on substrates such as road foundations or the ground.
  • the present invention relates to a screed plate finisher for use in conjunction with a paving machine.
  • Paving machines may be self propelled or constitute an accessory constructed for mounting on a vehicle.
  • Self propelled paving machines normally employ a hopper for carrying hot asphalt for distribution using augers over an area to be paved.
  • a screed plate serves to strike-off and level-off deposited asphalt prior to compaction of the so laid asphalt by, for example, tamping or rolling.
  • a so called gulley - two or more screed plates may be used and, by adjusting the screed plate relative to a substrate foundation the thickness of asphalt laid may be varied in a direction transverse to the direction of laying.
  • British Patent GB-A-1 560 469 Joseph Vogele A.G. describes and claims an extensible screed plate finisher for concrete or bituminous paving materials comprising a main plate fixed on support arms of the finisher, and at least one extra plate which is disposed behind the main plate in the direction of operation and which extends approximately over half the length of the main plate and which is connected to the main plate by means of guides and is laterally extensible by means of a displacement drive, and wherein the main plate carries a guide tube for receiving guide means connected to the extra plate, two guide elements are provided in spaced superposed relationship at the outer rear end of the main plate, and a rail fixed on the extra plate is guided between said guide elements.
  • the guide means used in the Vogele finisher are constructed in the form of a telescopic tube and the guide elements are rollers disposed on eccentrics.
  • Patent Application GB-A-2 024 900 describes a road paving machine having a screed plate finisher of variable overall width and comprising first and second parts.
  • the second part extends along and is reciprocable along the first part to vary the width of the screed.
  • the second part is supported from the first part by a telescopic support of non-circular cross section which prevents rotation between the telescopic members whilst permitting longitudinal extension and contraction to thereby vary the overall width of the screed plate finisher.
  • a paving machine having a main screed plate and at least one extension screed plate mounted to the rear, when considered in the direction of normal operation of the machine, of the main screed plate and extendible laterally outwards and in which the main screed plate assembly carries a guide tube receiving guide means attached to the or each extension screed plate and with means for supporting the extension screed plate against rotation about the axis of the guide tube, wherein the means for preventing such rotation comprises a pair of guide rails fixed in relation to the main screed plate and attached or closely adjacent in parallel relationship to the guide tube characterised in that the means further comprises pressure pads fixed in relation to the extension screed plate and bearing on the guide rails so as to oppose rotation in one direction of the extension screed plate about the axis of the guide tube under its own weight, and with a further guide rail fixed in relation to the extension screed plate and with a pressure pad fixed in relation to the main screed plate bearing on the further guide rail so as to oppose rotation in the reverse direction of the extension scr
  • the invention also includes a paving machine having a main screed plate and at least one extension screed plate mounted to the rear, when considered in the direction of normal operation of the machine, of the main screed plate and extendible laterally outwards and in which the main screed plate assembly carries a guide tube receiving guide means attached to the or each extension screed plate and with means for supporting the extension screed plate against rotation about the axis of the guide tube, wherein the means for preventing such rotation comprises at least two guide rails which are fixed in relation to the extension screed plate (8) characterised in that said guide rails are located in positions which are parallel and lateral of each other and parallel and lateral with respect to the guide tube, each guide rail having an associated pressure pad fixed in relation to the main screed plate and bearing on its respective rail in such a sense that at least one guide rail opposes rotation in one direction of the extension screed plate about the guide tube (6) under its own weight and that at least one other guide rail opposes rotation in the reverse direction of the extension screed plate (8) due to pressure against the ground.
  • a main screed plate assembly is in two halves only one of which, the left hand half, is shown in Figure 1.
  • the main screed assembly is supported between two end plates, 1, 2 which are held spaced apart and parallel to each other by a tube 3 of rectangular section and by a structure comprising a pair of rectangular section rails 4, 5 and a tube of circular section 6, which is the guide tube for the extension plate and forms the outermost of a set of three telescopic tubes.
  • a main screed plate itself is designated 7 in Figure 2.
  • An extension screed plate 8 which is also to be seen in Figure 2, is likewise supported between two end plates 9, 10 spaced apart by a tube 11 of rectangular section carrying a rail 12.
  • the end plate 9 which is disposed outboard of the assembly carries an innermost tube 13 of one of the three telescopic tubes working within the guide tube 6.
  • the extension screed plate 8 is extended or retracted by operation of a hydraulic jack 14 operating between the outer end plate 9 of the extension screed plate assembly and the inner plate 2 of the assembly carrying one half of the main screed plate.
  • the end and inner plate 10 of the extension screed plate assembly carries a boss 15 with a central opening 16 affording clearance for the outside of the guide tube 6.
  • the boss 15 supports a pair of pressure pads 17, 18, one of which 17 engages a machined under surface of the rail 4 and the other of which 18 engages a machined upper surface of the rail 5.
  • the surfaces of these rails which are not engaged by the pressure pads do not need to be machined accurately parallel or flat.
  • the action of the pressure pads on these rails supports the weight of the extension screed plate assembly when it is clear of the ground.
  • the rails 4 and 5 must be rigid enough for this purpose and they may themselves be supported on tubes or struts between the end plates, or, as indicated in Figure 2, rebated slightly into grooves milled in the sides of the guide tube 6.
  • the rectangular tube 11 of the extension tube assembly carries a rail 12 which is machined on its upper surface for engagement with a pressure pad 19, shown in more detail in Figure 2.
  • the pressure pad 19 is shown in greater detail in Figure 3 and comprises a block 20 of low friction material supported by a pair of adjusting screws 21, 22.
  • the pressure of the block 20 on the rail 12 supports the reaction of the ground against the extension screed plate 8 less the weight of the extension itself and, as wear takes place, the screws can be advanced to compensate. This adjustment is well clear of the internal mechanism of the extension support assembly and readily accessible for adjustment by an operator. Further, machined bearing surface of the rail 12 itself is readily accessible for cleaning.
  • the extension screed plate is supported by end plates 9 and 10 as well as guide tube 13 which slides telescopically within guide tube 6 which serves as a bridge between end plates 1 and 2.
  • the guide tube 6 is constructed in the same manner as described with reference to Figures 1 and 2.
  • the embodiment of Figures 4 and 5 differs from that of Figures 1 and 2 in the arrangement of guide rails and pressure pads.
  • the guide rails are designated 4A and 5A respectively with associated pressure pads 4B and 5B respectively.
  • Each of the guide rails 4A and 5A are mounted in parallel between end plates 9 and 10 and the pressure pads 5A/5B are constructed as shown in Figure 3.
  • Rams 26/26A are shown in figure to be mounted laterally of each other and laterally of the guide tube 6, if desired, they may be mounted vertically above each other. Further, an additional tubular support 11 may be used to maintain and reinforce the spaced relationship of end plates 1 and 2 and 9 and 10 respectively.
  • the pressure pads 4B and 5B for guide rails 4A and 5A are each carried on the end plates 1 and 10 as shown so as to permit movement of the guide rails 4A and 5A in the direction of arrows "x" and "y" in Figure 4 .

Landscapes

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

Claims (6)

  1. Pflastermaschine mit einer Haupt-Abziehplatte (7) und mindestens einer Erweiterungs-Abziehplatte (8), die bezüglich der Richtung des normalen Betriebs der Maschine hinter der Haupt-Abziehplatte (7) gehaltert ist und seitlich nach außen ausgefahren werden kann, und bei der der Aufbau der Haupt-Abziehplatte (7) ein Führungsrohr (6) trägt, welches eine an der/den Erweiterungs-Abziehplatte/n (8) angebrachte Führungseinrichtung aufnimmt, und mit einer Einrichtung zum Stützen der Erweiterungs-Abziehplatte gegen ein Drehen um die Achse des Führungsrohrs, bei der die Einrichtung zum Verhindern eines derartigen Drehens ein Paar Führungsschienen (4, 5) umfaßt, die in Bezug auf die Haupt-Abziehplatte (7) ortsfest sind und am Führungsrohr (6) befestigt bzw. in einer parallelen Beziehung direkt neben ihm angeordnet sind, dadurch gekennzeichnet, daß die Einrichtung ferner Druckkissen (17, 18) umfaßt, die in Bezug auf die Erweiterung-Abziehplatte ortsfest sind und an den Führungsschienen anliegen, um einem Drehen der Erweiterungs-Abziehplatte in einer Richtung um die Achse des Führungsrohrs unter ihrem Eigengewicht entgegenzuwirken, und mit einer weiteren Führungsschiene (12), die in Bezug auf die Erweiterungs-Abziehplatte ortsfest ist, und mit einem Druckkissen (19), das in Bezug auf die Haupt-Abziehplatte ortsfest ist und an der weiteren Führungsschiene (12) anliegt, um einem Drehen des Erweiterungs-Abziehplattenaufbaus in umgekehrter Richtung aufgrund von Druck gegen den Boden entgegenzuwirken.
  2. Pflastermaschine nach Anspruch 1, bei der die Führungsschienen (4, 5) des Paars in Rillen im Führungsrohr eingefügt sind.
  3. Pflastermaschine nach Anspruch 1 oder Anspruch 2, bei der das an der Schiene (12) des Erweiterungs-Abziehplattenaufbaus (8) anliegende Druckkissen (19) mit einer Einstellungseinrichtung (21, 22) bereitgestellt ist.
  4. Pflastermaschine mit einer Haupt-Abziehplatte (7) und mindestens einer Erweiterung-Abziehplatte (8), die bezüglich der Richtung des normalen Betriebs der Maschine hinter der Haupt-Abziehplatte (7) gehaltert ist und seitlich nach außen ausgefahren werden kann, und bei der der Aufbau der Haupt-Abziehplatte (7) ein Führungsrohr (6) trägt, welches eine an der/den Erweiterung-Abziehplatte/n (8) angebrachte Führungseinrichtung aufnimmt, und mit einer Einrichtung zum Stützen der Erweiterung-Abziehplatte gegen ein Drehen um die Achse des Führungsrohrs, bei der die Einrichtung zum Verhindern eines derartigen Drehens mindestens zwei Führungsschienen (4A, 5A) umfaßt, die in Bezug auf die Erweiterungs-Abziehplatte (8) ortsfest sind, dadurch gekennzeichnet, daß die Führungsschienen (4A, 5A) in Positionen angeordnet sind, die zueinander parallel und seitlich und in Bezug auf das Führungsrohr parallel und seitlich sind, wobei jede Führungsschiene (4A, 5A) ein zugeordnetes Druckkissen (4B, 5B) aufweist, das in Bezug auf die Haupt-Abziehplatte (7) ortsfest ist und an seiner jeweiligen Schiene in einer solchen Richtung anliegt, daß mindestens eine Führungsschiene einem Drehen der Erweiterungs-Abziehplatte (8) in einer Richtung um das Führungsrohr (6) unter ihrem Eigengewicht entgegenwirkt, und daß mindestens eine andere Führungsschien einem Drehen der Erweiterungs-Abziehplatte (8) in umgekehrter Richtung aufgrund von Druck gegen den Boden entgegenwirkt.
  5. Pflastermaschine nach Anspruch 4, dadurch gekennzeichnet, daß jede Führungsschiene (4A, 5A) und ihr zugeordnetes Druckkissen (4B, 5B) auf der gleichen Seite des Führungsrohrs (6) angeordnet ist.
  6. Pflastermaschine nach Anspruch 4 oder Anspruch 5, dadurch gekennzeichnet, daß die seitlich am weitesten außen liegende Führungsschiene (5A) und das zugeordnete Druckkissen (5B) einem Drehen der Erweiterungs-Abziehplatte aufgrund von Druck gegen den Boden entgegenwirkt.
EP19910311315 1990-12-04 1991-12-04 Fertiger Expired - Lifetime EP0493889B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9026358 1990-12-04
GB9026358A GB2250529A (en) 1990-12-04 1990-12-04 Screed plate finisher for paving machine

Publications (2)

Publication Number Publication Date
EP0493889A1 EP0493889A1 (de) 1992-07-08
EP0493889B1 true EP0493889B1 (de) 1997-03-05

Family

ID=10686468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910311315 Expired - Lifetime EP0493889B1 (de) 1990-12-04 1991-12-04 Fertiger

Country Status (3)

Country Link
EP (1) EP0493889B1 (de)
DE (1) DE69124967T2 (de)
GB (1) GB2250529A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7287931B2 (en) 2004-05-10 2007-10-30 Bitelli Spa Extendable paving screed

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1271901B (it) * 1992-01-09 1997-06-10 Dynapac Gmbh Sistema di tavole incorporate per finitrici di manti stradali
DE4420016A1 (de) * 1994-06-08 1995-12-14 Dynapac Gmbh Einbaubohle für einen Straßendeckenfertiger
DE19501254A1 (de) * 1995-01-17 1996-07-18 Dynapac Gmbh Einbaubohle für einen Straßendeckenfertiger
IT1295307B1 (it) * 1997-10-10 1999-05-04 Niarb S A Finitrice per la posa in opera dei conglomerati bituminosi munita di un rasatore estensibile perfezionato
DE29903338U1 (de) * 1999-02-24 1999-05-12 Joseph Vögele AG, 68163 Mannheim Bohle
US7651295B2 (en) * 2003-03-07 2010-01-26 Volvo Construction Equipment Ab Extension screed for a paving vehicle
EP3085834B1 (de) * 2015-04-20 2018-02-28 Dynapac GmbH Bohlenanbauteil für eine einbaubohle, einbaubohle und strassenfertiger mit einer einbaubohle

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2709435C3 (de) * 1977-03-04 1984-09-20 Joseph Vögele AG, 6800 Mannheim Einbaubohle
FR2408013A1 (fr) * 1977-11-04 1979-06-01 Hoes Klaus Gerd Poutre lisseuse pour finisseurs de chaussees
GB2024900A (en) * 1978-07-07 1980-01-16 Blaw Knox Ltd Road finishers
JPS5830815Y2 (ja) * 1979-05-14 1983-07-07 株式会社新潟鐵工所 アスフアルトフイニツシヤ等における敷きならし装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7287931B2 (en) 2004-05-10 2007-10-30 Bitelli Spa Extendable paving screed

Also Published As

Publication number Publication date
EP0493889A1 (de) 1992-07-08
GB2250529A (en) 1992-06-10
DE69124967D1 (de) 1997-04-10
DE69124967T2 (de) 1997-10-09
GB9026358D0 (en) 1991-01-23

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