EP0374428B1 - Poutre de compactage pour une finisseuse de routes - Google Patents

Poutre de compactage pour une finisseuse de routes Download PDF

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Publication number
EP0374428B1
EP0374428B1 EP89119795A EP89119795A EP0374428B1 EP 0374428 B1 EP0374428 B1 EP 0374428B1 EP 89119795 A EP89119795 A EP 89119795A EP 89119795 A EP89119795 A EP 89119795A EP 0374428 B1 EP0374428 B1 EP 0374428B1
Authority
EP
European Patent Office
Prior art keywords
tamping
screen according
baseplate
compacting
underside
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
EP89119795A
Other languages
German (de)
English (en)
Other versions
EP0374428A1 (fr
Inventor
Klaus-Dieter Bunk
Anton Dipl.-Ing. Fricke
Manfred Kurtz
Ernst Matten
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.)
Dynapac GmbH
Original Assignee
Dynapac 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 Dynapac GmbH filed Critical Dynapac GmbH
Priority to AT89119795T priority Critical patent/ATE100161T1/de
Publication of EP0374428A1 publication Critical patent/EP0374428A1/fr
Application granted granted Critical
Publication of EP0374428B1 publication Critical patent/EP0374428B1/fr
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
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
    • E01C19/407—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers with elements or parts partly or fully immersed in or penetrating into the material to act thereon, e.g. immersed vibrators or vibrating parts, kneading tampers, spaders
    • 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

Definitions

  • the invention relates to a (in practice sometimes referred to as "screed") screed for a (pavement) paver for paving and compacting fresh road building material (such as asphalt) according to the preamble of claim 1 preferably a compaction screed with a main screed, the working width of which can be changed by means of adjustable screeds that can be extended laterally.
  • Compaction screeds for such (road surface) pavers which have a base plate lying flat on the building material to be compacted during the compaction operation and (at least) a ramming unit with a strip-shaped ramming element which extends transversely to the direction of travel, the periodically oscillating driven ramming element (which is sometimes referred to as "knife”) compresses the building material to be compacted due to an impressed movement and the base plate (due to the weight force exerted on it) also contributes to the compacting, in particular, meanwhile, a (surface) smoothing of the laid building material.
  • This generic compaction screed according to DE 32 09 989 A 1 or DE 31 14 049 C 3 is not a ramming unit with respect to the second compaction device, but rather a compaction device (already known from US Pat. No. 3,614,916) with a so-called pressure bar with which (only) swelling pressure impulses are to be introduced into the paving material, which are generated by means of a vibration generator or exciter.
  • the second compression device arranged downstream of the first base plate or its (second) compression element only results in a lower compression than theoretically provided due to the periodic swelling pulses introduced into the installation material, it obviously does not occur that the second compression element downstream second base plate rests on the top of the installation material, so that it cannot be effective (smoothing) at all, and it can even happen that the underside of the second compression element (which extends downward beyond the underside of the base plate) inevitably rests on the pre-compacted installation material, which means that even the first base plate does not lie on its rear section at all on the top of the installation material pre-compressed by the ramming unit arranged in front of it, because the base plates are in the frame n the compaction screed has a structurally provided fixed relative position to each other, and this also applies to the second compaction device (and thus its compaction element), which - as stated - in contrast to a tamping element of a tamper unit, which performs a considerable stroke during the compaction operation, only
  • the present invention has for its object to improve a compaction screed of the type described in the preamble of claim 1 with a safe high post-compaction or final compaction, in particular with regard to its drive mechanism.
  • a preferred embodiment is that the lever arms connected to the ramming elements are of different lengths in order to be able to generate different ramming forces on the ramming elements, a preferred embodiment consisting in that the lever arm acting on the rear ramming element is shorter than that with the front ramming element connected lever arm.
  • the (tamper) stroke of the tamping element and / or its tamping frequency can preferably be changed in order to adjust the compaction screed according to the invention to different To be able to adjust conditions (especially layers of paving material of different thicknesses)
  • the tamper drive only has a working cylinder (preferably designed as a hydraulic cylinder) like a vibration exciter, undesirable, uncontrollable additions or cancellations of the generated vibrations do not occur in the two-arm lever-drive configuration described above, because the vibrations generated by the Compression operation - due to the lever arms of different lengths - results in a difference in vibration mass resulting in vibration amplitudes which act as a uniform vibration on the base plate (s) (in particular the front first base plate), which means that a separate vibration drive (at least) for the front first base plate can also be omitted.
  • a working cylinder preferably designed as a hydraulic cylinder
  • the tamper drive can have a rotatingly driven eccentric, which acts on the lever (or the tamper) via a connecting rod, it also having proven to be expedient for adaptation purposes if the eccentricity of the eccentric can be changed to change the tamper stroke.
  • At least a portion of the front first base plate can be lowered (and of course lockable in intermediate positions) in a controlled manner down to the level of the underside of the second base plate in order to reduce the height difference to the rear second base plate, this measure in particular for different layer thicknesses of paving material is appropriate.
  • a drop which can preferably take place in that the front first base plate is pivotally mounted about a pivot axis running transversely to the direction of travel, the stroke of the downstream one second ramming element can be rendered ineffective, for example, by lowering the underside of the front first base plate to the level of the rear second base plate, so that the downstream second ramming element no longer protrudes downward over both levels during its operation.
  • Such a pivoting, metered adjustment of the front first base plate can preferably take place by means of an adjustment device with a worm drive, although other adjustment devices such as a stepping motor, an adjustment screw, spindle or the like can obviously also be provided.
  • the radial distance of the front edge of the front first base plate pointing in the direction of travel of the paver to the pivot axis is smaller than the distance of the rear edge of the first base plate facing the rear second base plate, so that the rear edge can be lowered by a Adjustment of the inclination of the first base plate to make the downstream second tamper ineffective, in whole or in part.
  • the ramming elements are preferably beveled in a manner known per se on their lower front edges pointing in the direction of travel, the beveling of the front first ramming element being able to have a larger angle to the horizontal than the beveling of the rear second ramming element, for example 45 ° / 30 °.
  • a retrofitting of conventional pavers with the compaction screed according to the invention and a replacement of a compaction screed for repair purposes is achieved according to a development of the present invention in that the front first base plate and the ramming units form an exchangeable structural unit.
  • the first base plate 2 is immediately preceded by a ramming unit 5 which effects a pre-compaction and has a strip-shaped tamping element 5 'which extends transversely to the direction of travel 4 and which periodically moves with its underside 23 during the compaction operation to the level 24 of the underside 25 of the first base plate 2 is.
  • the first base plate 2 is immediately followed by a second tamping unit which brings about a compaction and has a strip-shaped (second) ramming element 6 'which also extends transversely to the direction of travel 4.
  • the two ramming elements 5 ', 6' each have bevels 5a or 6a on their front (bottom), the bevel 5a of the first ramming element 5 'lying in the direction of travel 4 not being as steep in relation to the horizontal as the bevel 6a of the first base plate 2 immediately downstream second ramming element 6 '.
  • the two ramming elements 5 ', 6' are connected to one another via a two-armed (rocker) lever 7, which is pivotally mounted about an axis of rotation 8.
  • the lever arm 7a on which the ramming element 5 'arranged in the direction of travel 4 is arranged, is longer than the lever arm 7b, on which the ramming element 6' is arranged, so that the two ramming units 5, 6 are different Exercise ramming forces.
  • the compression bar 1 is pivotable about a pivot axis 11 in the direction of arrow 12, i. H. can be lowered with its section facing the ramming unit 6 and thus its inclination adjustable.
  • FIG. 2 shows an enlarged partial representation of the representation according to FIG. 1.
  • the compaction screed 1 ' has a so-called main screed 13 which, in order to adjust / adjust the working width, has four adjustment beams which can be extended laterally and which also form components of the compaction screed 1', the main screed 13 and the adjustable screeds to be arranged in room 14, which are not shown in the drawing, are basically constructed in the same way.
  • FIG. 1 it is indicated by dashed lines 2a that the front first base plate 2 can be adjusted in its inclination about the pivot axis 11.
  • a spindle 17 is provided for adjusting the compression bar 1 - and thus the front first base plate 2.
  • Fig. 1 is also indicated by dashed lines how the ramming elements 5 ', 6' move about the pivot axis 8, the ramming units 5, 6 or their ramming elements 5 ', 6' are driven by an eccentric shaft 16, which via a connecting rod 15 is connected to the tab 9 of the lever 7.
  • the tamping element 6 ′ of the second tamper unit 6 has an underside 26 over the underside 25 of the first base plate 2 Downwardly protruding second base plate 18 is immediately arranged during the compression operation on the building material which is re-compressed by the ramming element 6 'of the second ramming unit 6. It can also be seen from FIG. 1 that the second ramming element 6 'in its upward and downward movement reaches down to the working surface of the rear second base plate 18 which is in engagement with the building material 3.
  • the inclination of the front first base plate 2 is also adjustable such that its rear area can be lowered to the level of the working surface of the rear second base plate 18.
  • FIG. 3 shows a variant compared to the exemplary embodiment according to FIG. 1, an adjusting screed 14 ′ being provided in addition to the main screed 13.
  • the embodiment of the main screed 13 according to FIG. 3 differs from the embodiment according to FIG. 1 only by another adjustment device for the compression bar 1, which in this embodiment has a working cylinder 19 instead of a spindle 17.
  • FIG. 4 shows a section through the compaction screed according to FIG. 3 in the direction of the section line IV-IV in FIG. 3, but only one half of the main screed 13. On the left side of FIG. 3 there is the center of the main screed 13; here the main screed 13 actually continues to the left.
  • the main screed 13 could in principle be of any previously described or similar configuration, a main screed 13 according to FIG. 3 being shown here.
  • eccentric shaft 16 and the tab 9 of the lever 7 are constructed. It can be seen in particular that the eccentric shaft 16 is eccentric in the area in which it is encompassed by the connecting rod 15, and that in addition to this predetermined eccentricity there is the eccentricity of a bearing shell 21 which surrounds the eccentric shaft 16 in this area . This bearing shell 21 can be rotated coaxially about the eccentric shaft 16. The set eccentricity is fixed with a disk 22.
  • the eccentricities of the eccentric shaft 16 and the bearing shell 21 add or subtract, so that the eccentric formed by the eccentric shaft 16 and the bearing shell 21, which is encompassed by the eye of the connecting rod 15, its eccentricity can be changed, a change in this eccentricity causing a change in the tamper stroke of the ramming units 5, 6 or their ramming elements 5 ', 6'.
  • a clutch 23 ' is indicated in FIG. 4, through which the eccentric shaft 16 is driven in an actively rotating manner.
  • FIG. 5 finally shows a further (third) exemplary embodiment of a compaction screed 1 'according to the invention, which is distinguished from the exemplary embodiments described above by a modified embodiment of its adjusting device, the adjusting device in FIG. 5 being an oil motor 20 with a worm gear shows.

Claims (17)

  1. Semelle de compactage pour machine de finition (de revêtement routier)
    a) comprenant une première plaque au sol (2) qui agit à plat sur le matériau de construction routière,
    b) qui, (dans le sens de déplacement (4) de la machine de finition),
    b1) est immédiatement précédée bar un premier dispositif de compactage (organe de damage) (5) qui comprend un premier élément de damage (5') en forme de barre s'étendant transversalement au sens de déplacement (4) et dont le dessous est amené périodiquement au niveau (24) du dessous (25) de la première plaque au sol (2), et
    b2) est immédiatement suivie par un second dispositif de compactage (organe de damage) (6) comprenant un second élément de damage (6') en forme de barre qui s'étend transversalement au sens de déplacement (4), dont le dessous (27) est amené périodiquement au niveau (28) du dessous (26) de la seconde plaque au sol (18), et
    b3) qui est immédiatement suivi par une seconde plaque au sol (18) dont le dessous (26) dépasse, vers le bas, du dessous (25) de la première plaque au sol (2), le dessous (25) de la première plaque au sol (2) étant disposé plus haut que le dessous (26) de la seconde plaque au sol (18), la différence de hauteur étant égale à la course maximum (de damage) de second élément de damage (6'),
       caractérisée en ce que les éléments de damage (5', 6') sont reliés l'un à l'autre par un levier (basculant) (7) à deux bras, chacun des éléments de damage (5', 6') étant relié à l'un des deux bras de levier (7a, 7b) et le levier (7) pouvant être entraîné de manière oscillante autour de son axe de fixation (8).
  2. Semelle de compactage selon la revendication 1, caractérisée en ce que les éléments de damage (5', 6') sont entraînés en alternance.
  3. Semelle de compactage selon la revendication 1 ou 2, caractérisée en ce que les organes de damage (5, 6) ou leurs éléments de damage (5', 6') sont couplés l'un à l'autre sur le plan de l'entraînement.
  4. Semelle de compactage selon l'une des revendications 1 à 3, caractérisée en ce que les bras de levier (7a, 7b) reliés aux éléments de damage (5', 6') sont de longueurs différentes.
  5. Semelle de compactage selon la revendication 4, caractérisée en ce que le bras de levier (7b) agissant sur le second élément de damage (6') situé à l'arrière est plus court que le bras de levier (7a) relié au premier élément de damage (5') situé à l'avant.
  6. Semelle de compactage selon une ou plusieurs des revendications précédentes, caractérisée en ce que la course (de damage) des éléments de damage (5', 6') peut être modifiée.
  7. Semelle de compactage selon une ou plusieurs des revendications précédentes, caractérisée en ce que la fréquence de damage des éléments de damage (5', 6') peut être modifiée.
  8. Semelle de compactage selon une ou plusieurs des revendications précédentes, caractérisée en ce que le dispositif d'entraînement de damage comporte un cylindre de travail (de préférence un vérin hydraulique) et un organe d'excitation pour créer une oscillation du piston dudit cylindre.
  9. Semelle de compactage selon une ou plusieurs des revendications 1 à 7, caractérisée en ce que le dispositif d'entraînement de damage comporte un excentrique actionné en rotation (16, 21) qui agit sur le levier (7) ou sur les éléments de damage (5', 6') par l'intermédiaire d'une bielle (15).
  10. Semelle de compactage selon les revendications 6 et 9, caractérisée en ce que l'excentricité de l'excentrique (16, 21) peut être modifiée.
  11. Semelle de compactage selon une ou plusieurs des revendications précédentes, caractérisée en ce que au moins une portion de la première plaque au sol (2) peut descendre, de manière commandée, jusqu'au niveau (28) du dessous (26) de la seconde plaque au sol (18).
  12. Semelle de compactage selon la revendication 11, caractérisée en ce que la première plaque au sol (2) située à l'avant est montée de manière pivotante autour d'un axe de pivotement (11) transversal au sens de déplacement (4).
  13. Semelle de compactage selon la revendication 11 ou 12, caractérisée en ce que, pour permettre d'en doser la descente, la plaque au sol avant (2) est reliée à un dispositif de réglage qui comporte un dispositif d'entraînement à vis sans fin.
  14. Semelle de compactage selon la revendication 12 ou 13, caractérisée en ce que la distance radiale entre le bord avant de la première plaque au sol (2) située à l'avant et l'axe de pivotement (11) est inférieure à la distance entre son bord arrière et ledit axe de pivotement.
  15. Semelle de compactage selon une ou plusieurs des revendications précédentes, caractérisée en ce que les éléments de damage (5', 6') comportent des bords avant chanfreinés de manière connue.
  16. Semelle de compactage selon la revendication 15, caractérisée en ce que le chanfrein (5a) du premier élément de damage (5') situé à l'avant présente, par rapport à l'horizontale, un angle supérieur au chanfrein (6a) du second élément de damage (6') situé à l'arrière.
  17. Semelle de compactage selon une ou plusieurs des revendications précédentes, caractérisée en ce que la plaque au sol avant (2) et les organes de damage (5, 6) forment une unité de construction interchangeable.
EP89119795A 1988-12-19 1989-10-25 Poutre de compactage pour une finisseuse de routes Expired - Lifetime EP0374428B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89119795T ATE100161T1 (de) 1988-12-19 1989-10-25 Verdichtungsbohle fuer einen strassenfertiger.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3842706 1988-12-19
DE3842706 1988-12-19
DE3933742A DE3933742A1 (de) 1988-12-19 1989-10-10 Verdichtungsbohle fuer einen strassenfertiger
DE3933742 1989-10-10

Publications (2)

Publication Number Publication Date
EP0374428A1 EP0374428A1 (fr) 1990-06-27
EP0374428B1 true EP0374428B1 (fr) 1994-01-12

Family

ID=25875331

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89119795A Expired - Lifetime EP0374428B1 (fr) 1988-12-19 1989-10-25 Poutre de compactage pour une finisseuse de routes

Country Status (6)

Country Link
US (1) US5165820A (fr)
EP (1) EP0374428B1 (fr)
JP (1) JP3056224B2 (fr)
DE (2) DE3933742A1 (fr)
DK (1) DK197290D0 (fr)
WO (1) WO1990007030A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8371770B1 (en) 2012-04-09 2013-02-12 Caterpillar Inc. Apparatus for tamping paving material

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9313161U1 (de) * 1993-09-01 1993-10-28 Voegele Ag J Deckenfertiger und Werkzeug
DE19625006A1 (de) * 1996-06-22 1998-01-15 Abg Allg Baumaschinen Gmbh Verfahren zum Einbauen von Asphaltmischgut
PL3375936T3 (pl) 2009-11-20 2022-01-10 Joseph Vögele AG Belka równająca do układarki
PL2325391T3 (pl) * 2009-11-20 2013-08-30 Voegele Ag J Ubijak z wybieralnym skokiem
WO2015179988A1 (fr) 2014-05-26 2015-12-03 Ammann Schweiz Ag Procédé de conversion d'un mouvement de rotation en mouvement de translation, utilisation dudit procédé et dispositif permettant de mettre en œuvre ledit procédé

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Publication number Priority date Publication date Assignee Title
US1644511A (en) * 1921-12-29 1927-10-04 Edward G Carr Concrete-road machine
US3252390A (en) * 1963-04-02 1966-05-24 Koehring Co Concrete paving machine
US3508475A (en) * 1967-08-30 1970-04-28 Barber Greene Co Plate towed compactor
US3541932A (en) * 1967-12-18 1970-11-24 Pape Bros Inc Auger type aggregate spreader
US3504598A (en) * 1969-01-22 1970-04-07 Rex Chainbelt Inc Pulverizer-mixer with a vibratory tailboard
US3614916A (en) * 1970-04-13 1971-10-26 Jewell R Benson Compacting apparatus for finishing hot mix pavement
US3856425A (en) * 1971-01-04 1974-12-24 Miller Formless Co Inc Adjustable side for slip form
DE3209989A1 (de) * 1981-04-07 1983-09-29 Joseph Vögele AG, 6800 Mannheim Deckenfertiger
DE3127377C2 (de) * 1981-07-09 1985-05-02 LIBA Lingener Baumaschinen Gesellschaft mbH & Co. KG, 4450 Lingen Verdichtungsbohle für Straßenfertiger
DE3500277A1 (de) * 1985-01-05 1986-07-10 Dynapac HOES GmbH, 2906 Wardenburg An der rueckseite einer strassenbaustoff-verlegemaschine angeordnete bohle zum fertigen der oberflaeche von frisch verlegtem strassenbaustoff
US4828428A (en) * 1987-10-23 1989-05-09 Pav-Saver Manufacturing Company Double tamping bar vibratory screed

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8371770B1 (en) 2012-04-09 2013-02-12 Caterpillar Inc. Apparatus for tamping paving material

Also Published As

Publication number Publication date
WO1990007030A1 (fr) 1990-06-28
DE3933742A1 (de) 1990-06-21
US5165820A (en) 1992-11-24
DK197290A (da) 1990-08-17
DE58906709D1 (de) 1994-02-24
DK197290D0 (da) 1990-08-17
JP3056224B2 (ja) 2000-06-26
EP0374428A1 (fr) 1990-06-27
JPH03503915A (ja) 1991-08-29

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