EP2238297B1 - Dispositif de compactage de matériaux de construction routière - Google Patents

Dispositif de compactage de matériaux de construction routière Download PDF

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Publication number
EP2238297B1
EP2238297B1 EP09706156.8A EP09706156A EP2238297B1 EP 2238297 B1 EP2238297 B1 EP 2238297B1 EP 09706156 A EP09706156 A EP 09706156A EP 2238297 B1 EP2238297 B1 EP 2238297B1
Authority
EP
European Patent Office
Prior art keywords
heating element
strip
cavity
tamper
heating
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.)
Active
Application number
EP09706156.8A
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German (de)
English (en)
Other versions
EP2238297A1 (fr
Inventor
Anton Mahler
Marc Niggemann
Oliver Lachmann
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 Allgemeine Baumaschinen GmbH
Original Assignee
ABG Allgemeine Baumaschinen GmbH
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Publication date
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Publication of EP2238297A1 publication Critical patent/EP2238297A1/fr
Application granted granted Critical
Publication of EP2238297B1 publication Critical patent/EP2238297B1/fr
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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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/10—Heated screeds

Definitions

  • the invention relates to a device for compacting road building materials according to the preamble of claim 1.
  • Such a device is known from DE 26 00 108 A1 .
  • a screed is attached, which is preceded by a rammer for pre-compression of the paving material.
  • the bituminous mixture which is in a warm state, sticks to the cold ramming bar.
  • the adhesive material adhering to the ramming bar leaves grooves in the lining, which can no longer be removed by the subsequent screed and therefore remain on the surface of the road surface.
  • it is known to heat the tamper strip The use of a gas burner was replaced by an electric heater, which in an open or closed Hollow profile, which forms the tamper strip is inserted. The electric heater is then inside the tamper strip.
  • Out EP 0 641 887 B1 is a paver and tool known as a tamper strip for a screed.
  • the tamper strip forms a channel between a support part and a wearing part, in which a heating element, in particular a heating element, is provided.
  • the heating element is a flat electric heating element, which is shielded by an insert upwards.
  • the supplement ensures that the heating element is clamped, so that there is the largest possible contact surface for the heat conduction.
  • the disadvantage here is that the heating element breaks frequently. The replacement of a defective heating element leads to undesirable downtime of the paver. The maintenance is increased.
  • the heating capacity is further determined by the contact heat.
  • the object of the invention is therefore to provide a device for compacting road construction materials according to the preamble of claim 1, whose heating element is low maintenance and has good heating capacity.
  • a tamper strip is provided with an electric heating element whose heating element is particularly robust as round tubular heater and easy to handle by connecting to a terminal block.
  • the heat distribution is improved by the arrangement of the rods. Due to its length and deformability, the round tube radiator gives a better picture than a flat tube radiator.
  • the recess in the tamper strip can be made smaller, so that the heat losses due to convection can be kept low.
  • the attachment of the round tubular heater can be done by means of clamping by a stop plate or by an elastic deformation.
  • Elastic deformation can be applied a statically acting energy storage by utilizing the elastic deformation.
  • the originating example of human muscle energy when inserting the heating element in the recess of the tamper bar is stored in a suitable manner.
  • the energy storage element acts preferably in the direction of the beating up and down movement for storing the heating element.
  • the heating element is thus supported and fixed within the tamper strip on the length. In a hammering rammer, the heating element must be secured against vibrations for purely mechanical reasons. The heating element is therefore protected against vibration.
  • the round tube heating element is designed as a heating rod in corrugated or zigzag-like shape.
  • the resilient property of the heating element is utilized. This can be clamped by loaded corrugation in the rammer independently.
  • the tamper strip is a horizontally split construction having a support and a blow bar.
  • a groove is provided in which the heating element is located. After wearing the blow bar so the support bar can remain on the machine and continue to be used. The groove is thus not in the wear part.
  • the blow bars can be kept inexpensive.
  • the blow bars can be designed in several parts and bridged by a cover plate. The connection surfaces are thereby sealed.
  • the paver 1 includes a chassis 2, a drive unit 3, a forward lying in the direction of travel Gutbunker 4 and a rear auger 5. With lateral arms 6 a screed 7 is towed, which transported from the Gutbunker 4 to the rear, installed by the auger 5 built-in building material.
  • the screed 7 is preferably a vibration screed that smoothes and compacts.
  • At the front in the direction of travel F side of the screed 7 at least one rammer 8 is arranged, as in Fig. 1b is shown.
  • To Fig. 1b are two rammers 8 arranged one behind the other. It is therefore a Doppelstampfer screed.
  • a rammer 8 may also be arranged downstream of the screed 7.
  • the screed 7 can be laterally extendable with a fixed working width or for larger working widths as an extendable screed.
  • the arranged in the direction of travel F in front of the screed 7 ram 8 operates as a precompression element.
  • the rammer described below 8 may preferably additionally or alternatively the screed 7 be arranged downstream.
  • the rammer 8 has a tamper strip 9 which can be driven for a striking upward and downward movement.
  • a drive 10 is provided for driving the tamper strip 9.
  • the interior of the tamper strip 9 is equipped with an electric heater in the form of a rod-shaped, can be clamped in a recess 11 of the tamper strip 9 heating element 12.
  • the heating element 12 is formed by a round tubular heater whose heating coil 20 is folded over at a free end of the round tubular heater at least once to form two adjacently arranged rods 33, 34th
  • Fig. 2 are the two rods 33, 34 next to each other.
  • Fig. 3 are the two rods 33, 34 on top of each other.
  • a retaining strip 31 is provided which presses the heating element 12 by means of screws 32 on a bottom 26 of the recess 11, so that this is free of play in the recess 11.
  • Fig. 3 is for clamping the heating element 12, a heating element 12 in the direction of the beating up and down movement S stored spring storage provided.
  • the spring accumulator causes a clamping by elastic deformation.
  • the spring accumulator clamps the heating element 12 along the recess 11 such that the heating element 12 is stabilized or free of play in the recess 11.
  • the thermal expansion of the heating element 12 in the direction of a free end 13 is given.
  • the recess 11 may have a round or angular cross-section, it may be formed by a core hole or it may be formed as a closed groove.
  • connection block 14 replacement of the heating element 12 is noticeably easier if it is fastened only on the front side of the rammer 8 via a connection block 14.
  • the heating element 12 is electrically connected via the terminal block 14 to a power source, for which a connection cable 19 is provided.
  • the terminal block 14 is attached to the tamper strip 9.
  • the heating element 12 is preferably formed as a corrugated, kinked or zigzag-shaped heating element whose elastic shape change forms the spring accumulator.
  • the heating element 12 is seated elastically biased in the recess 11 of the tamper strip 9.
  • the recess 11 extending along the tamper strip 9 thus has dimensions, in particular in height and in width, the elastic deformation of the heating element 12 and thus the bias determined (cf. Fig. 6 ).
  • the elastic deformation of the heating element 12 is exploited, to which the strength of the corrugation or the zigzag shape of the heating element is selected with respect to the recess 11.
  • Fig. 6 shows, for example, the originating from human muscle energy (when inserting the heating element 12) to build the static acting spring accumulator taking advantage of the elastic deformation.
  • the independent terminals of heating elements as heating elements 12 is independent of the tube shape.
  • the number of waves of kinks 15, 16, 17, 18 may vary. At least one kink is required.
  • the axis of the buckling can vary. According to Fig. 3 the kinks are in one plane. But this is not mandatory.
  • Fig. 6 shows the insertion of a heating element 12 according to Fig. 3 in the recess 11 of the tamper strip 9.
  • the resilient clamping action can finally from the actual heating element 12 to be separated.
  • an additional, unheated side dish in wave or kink shape is used to clamp the heating element 12, as in Fig. 7, 8 is shown.
  • the heating element 12 is formed as Rundrohrsammlungstab.
  • This Rundrohrsammlungstab has only one heating coil 20, the free end 13 is folded and returned. Beginning 21 and end 22 of a heating coil 20 are connected to the one terminal block 14 and fastened.
  • the heating coil 20 transfers heat to the tamper strip 9, wherein the contact with the tamper strip 9 is no longer a priority as in Flachrohrsammlung redesignn.
  • the folded heating coil 20 forms a heating package with two superimposed or juxtaposed rods 33, 34 of the heating coil 20 of a round tubular heater, which are connected in a common terminal block 14 with an electrical lead 19.
  • the according to Fig. 3 provided four kinks 15, 16, 17, 18 are chosen so that the heating element 12 builds enough spring tension to clamp during the operation of the rammer 8 sufficiently in the tamper strip 9.
  • the heating element 12 as a round tubular heater has a good bending property.
  • the tamper strip 9 preferably comprises a support bar 23 and a beater bar 24.
  • the tamper bar 9 is thus divided horizontally.
  • To form the recess 11 in an enclosed space of the tamper strip 9 is preferably in the support bar 23 has a groove 25 in which the heating element 12 is located.
  • the groove 25 is closed by a top surface 26 of the beater bar 24 to form the recess 11.
  • the support bar 23 remain on the paver 1 and continue to be used.
  • the groove 25 can thus be mounted in a non-wearing part.
  • the blow bar 24 may consist of several blow bar segments.
  • the blow bar segments can be bridged by a cover plate.
  • the cover plate can then form the top surface 26 for limiting the recess 11.
  • the blow bar 24 is also preferably formed as a thin-walled profile.
  • the support bar 23 is adaptable as a supporting body to the conditions of use.
  • the support bar 23 on the head side have a protruding base 30 for component stiffening.
  • the recess 11 is formed in a tamper strip 9, wherein the support bar 23 is integrally formed with the beater bar 24.
  • the recess 11 can then be formed for example by a core hole.
  • FIG. 4 and FIG. 5 show the tamper strip 9 according to Fig. 3 with two superimposed rods of the heating coil 20 of a round tubular heater.
  • the recess 11 is closed at the front side of the tamper strip 9 by the connection block 14.
  • Fig. 6 shows, prior to installation, the heating element 12 is more kinked than in the mounted state.
  • the heating element 12 is pushed laterally into the groove 25 between the support bar 23 and beater bar 24. Meanwhile, the heating element 12 deforms elastically and possibly proportionally plastically far enough in a prestressed form that it fills the groove 25. The proportion of elastic deformation causes the clamping.
  • the length of the recess 11 is dimensioned such that the heating element 12 can expand to the free end by sliding movement.
  • Fig. 5 shows, the heating element 12 is completely enclosed in the closed system of the recess 11 of the tamper strip. No direct contact between heating element 12 as a round tubular heater and blow bar 24 is required.
  • the surface temperature of the round tubular heater increases with respect to a Flachrohrutzoasa with contact.
  • the round tube heater is suitable for this higher temperature.
  • the proportion of the heat flow from the reduced contact heat transfer of the round tubular heater is thus distributed in particular to the heat radiation and the convection as heat transfer types.
  • FIGS. 7 and 8 is provided as a spring storage a corrugated or kinked insert 27 whose elastic shape change forms the spring accumulator.
  • the resilient clamping action is here separated from the actual heating element 12.
  • the supplement 27 is an additional, preferably unheated element in wave or kink shape, which clamps the heating element 12.

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

Claims (18)

  1. Dispositif de compactage de matériau de construction de routes présentant
    une poutre de lissage (7) fixée à un engin (1) finisseur de route et s'étendant transversalement par rapport à la direction de travail de l'engin (1) et
    une dameuse (8) disposée en avant et/ou en arrière de cette poutre de lissage et présentant une barre de damage (9) qui peut être entraînée en un mouvement de percussion vers le haut et vers le bas (S) et équipée à l'intérieur d'un chauffage électrique qui présente la forme d'un élément chauffant (12) en forme de barreau qui peut être enserré dans une découpe (11) ménagée dans la barre de damage (9),
    caractérisé en ce que
    l'élément chauffant (12) est un corps chauffant en forme de tube circulaire dont la bobine de chauffage (20) entoure au moins une fois l'extrémité libre du corps chauffant en forme de tube circulaire en formant deux tiges disposées au voisinage l'une de l'autre et reliées à une arrivée électrique (19) dans un bloc de raccordement (14) commun.
  2. Dispositif selon la revendication 1, caractérisé en ce que la bobine de chauffage (20) présente une seule tige.
  3. Dispositif selon les revendications 1 ou 2, caractérisé en ce que la bobine de chauffage (20) forme deux tiges disposées l'une au-dessus de l'autre ou l'une à côté de l'autre.
  4. Dispositif selon l'une des revendications 1 à 3, caractérisé en ce que le bloc de raccordement (14) ferme la découpe (11) pour former un espace fermé.
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le bloc de raccordement (14) est disposé sur un côté frontal de la barre de damage (9).
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que la barre de damage (9) présente une barre de support (23) et une barre de percussion (24) et en ce que la découpe (11) est ménagée dans la barre de support (23).
  7. Dispositif selon la revendication 6, caractérisé en ce que la barre de support (23) présente une rainure (25) qui est fermée par une surface supérieure (26) de la barre de percussion (24) pour former la découpe (11).
  8. Dispositif selon les revendications 6 ou 7, caractérisé en ce que la barre de support (23) présente un socle (30) saillant côté tête en vue de rigidifier le composant.
  9. Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que la barre de percussion (24) présente au moins deux éléments de barre de percussion disposés l'un à la suite de l'autre.
  10. Dispositif selon la revendication 9, caractérisé en ce que les segments de la barre de percussion sont reliés par une tôle de recouvrement.
  11. Dispositif selon la revendication 10, caractérisé en ce que la tôle de recouvrement forme la surface côté tête (26) qui délimite la découpe (11).
  12. Dispositif selon l'une des revendications 6 à 11, caractérisé en ce que la barre de percussion (24) est configurée selon un profil à paroi mince.
  13. Dispositif selon l'une des revendications 1 à 12, caractérisé en ce qu'il est prévu un accumulateur élastique pour assurer le maintien de l'élément chauffant (12) dans la direction du déplacement de percussion vers le haut et vers le bas.
  14. Dispositif selon la revendication 13, caractérisé en ce que l'accumulateur élastique est formé par déformation élastique.
  15. Dispositif selon les revendications 13 ou 14, caractérisé en ce que l'accumulateur élastique serre l'élément chauffant (12) le long de la découpe (11) de telle sorte qu'il repose sans jeu dans la découpe (11).
  16. Dispositif selon l'une des revendications 13 à 15, caractérisé en ce que l'élément chauffant (12) est configuré comme barreau chauffant ondulé ou en zigzag dont la déformation élastique forme l'accumulateur élastique.
  17. Dispositif selon l'une des revendications 13 à 15, caractérisé en ce que l'accumulateur élastique est configuré comme un élément de calage ondulé ou en zigzag (27) dont la déformation élastique forme l'accumulateur élastique.
  18. Ensemble selon l'une des revendications 1 à 12, caractérisé en ce qu'il est prévu une barre de maintien (31) pour assurer le maintien de l'élément chauffant, (12) dans la direction du déplacement de percussion vers le haut et vers le bas.
EP09706156.8A 2008-02-02 2009-01-06 Dispositif de compactage de matériaux de construction routière Active EP2238297B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008007307A DE102008007307A1 (de) 2008-02-02 2008-02-02 Vorrichtung zum Verdichten von Straßenbaustoffen
PCT/EP2009/000026 WO2009095146A1 (fr) 2008-02-02 2009-01-06 Dispositif de compactage de matériaux de construction routière

Publications (2)

Publication Number Publication Date
EP2238297A1 EP2238297A1 (fr) 2010-10-13
EP2238297B1 true EP2238297B1 (fr) 2013-07-31

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09706156.8A Active EP2238297B1 (fr) 2008-02-02 2009-01-06 Dispositif de compactage de matériaux de construction routière

Country Status (5)

Country Link
US (1) US8113738B2 (fr)
EP (1) EP2238297B1 (fr)
CN (1) CN101960072B (fr)
DE (1) DE102008007307A1 (fr)
WO (1) WO2009095146A1 (fr)

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Publication number Publication date
CN101960072A (zh) 2011-01-26
US20110002738A1 (en) 2011-01-06
CN101960072B (zh) 2013-02-06
WO2009095146A1 (fr) 2009-08-06
DE102008007307A1 (de) 2009-08-06
US8113738B2 (en) 2012-02-14
EP2238297A1 (fr) 2010-10-13

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