EP0620320B1 - Verfahren zum kontinuierlichen Aufbringen von Bituminösem Mischgut, Zufuhrvorrichtung für Bitumenauftragvorrichtung und entsprechende Strassenfertiger - Google Patents

Verfahren zum kontinuierlichen Aufbringen von Bituminösem Mischgut, Zufuhrvorrichtung für Bitumenauftragvorrichtung und entsprechende Strassenfertiger Download PDF

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Publication number
EP0620320B1
EP0620320B1 EP19940400756 EP94400756A EP0620320B1 EP 0620320 B1 EP0620320 B1 EP 0620320B1 EP 19940400756 EP19940400756 EP 19940400756 EP 94400756 A EP94400756 A EP 94400756A EP 0620320 B1 EP0620320 B1 EP 0620320B1
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EP
European Patent Office
Prior art keywords
feeding device
finisher
spreading
width
hopper
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
EP19940400756
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English (en)
French (fr)
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EP0620320A1 (de
Inventor
Jean-Claude Fouard
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.)
SCREG SA
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SCREG SA
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Publication date
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ

Definitions

  • the present invention relates to a feed device for asphalt spreading machine of the road surface finisher type or the like, as well as a continuous asphalt spreading method.
  • a machine called a paver which is supplied with asphalt directly with road semi-trailers or using a feed hopper.
  • This hopper located at the front of the paver, is itself supplied by trucks which take turns to bring it material.
  • the hopper constitutes a reserve of material, and this is gradually withdrawn by the finisher, while the latter advances on the roadway under construction.
  • the intermediate hopper between the trucks and the paver prevents shocks on the latter and partially regulates the feed, but it does not improve the rate of spreading.
  • finisher supply and material transfer assembly to the rear of the finisher to behave like a "bottleneck" which conditions the speed of finishing of the pavement under construction. This is all the more sensitive as the working width of the finisher is high. Indeed, when the paver is working over a width of 8.50 m, which is common, it is necessary that the asphalt poured into the hopper by trucks arrive as quickly as possible towards the rear of the paver, over a width of 8.50 m, and with a sufficient flow to obtain an adequate layer thickness.
  • the object of the present invention is to remedy the drawbacks of the spreading process and of the finishers according to the prior art, and to propose a new process for spreading a road surface, and for the implementation of this process, a new paver feeder device, which allows loading of asphalt by several trucks simultaneously, while the paver is running, followed by spreading of asphalt in two phases, at one rate much higher than that commonly practiced.
  • the subject of the invention is a method of spreading road surface material over a strip of width L and thickness E, according to claim 1.
  • two lateral pre-spreading zones are used.
  • the invention also relates to a supply device for a machine for spreading a road surface material of the paver type or similar, said supply device being intended to be positioned in front of the paver and being defined by claim 3.
  • the preamble of claim 3 corresponds to the device of DE-A-1 049 413, Fig. 5 and 6, in which the transverse pre-spreading blade must adjust the thickness of the pre-spread material to the desired final value.
  • the invention also relates to a finisher comprising, in the vicinity of its front part, a feed device having one or more of the preceding characteristics.
  • the feed device is integral with the finisher.
  • US-A-3,636,832 describes a spreading process using two coupled finishers arranged side by side.
  • a paver 1 comprising at its front part a zone 2 for supplying asphalt by one or more trucks 3, and at its rear part a finishing zone 4.
  • the flow of asphalt from the supply zone 2 towards the finishing zone 4 passes through a relatively narrow intermediate zone 5, corresponding to an opening in the hopper of the paver, by which the coated materials are withdrawn from the feeding zone, in particular by a bar conveyor located at the bottom of the hopper, then the mixes are spread so that the width of the flow in exit zone 4 corresponds to the desired working width.
  • this intermediate zone 5 constitutes a bottleneck as shown diagrammatically by line 6, which affects the working rate of the paver.
  • FIGS 2 to 4 show the supply device 7 according to the invention.
  • This supply device 7 constitutes an autonomous mobile unit, comprising a chassis 8 movable on tracks 9 driven by independent motor means (not shown).
  • the chassis 8 is surmounted by a hopper 10 essentially comprising a substantially horizontal bottom wall 11 and substantially vertical side walls 12.
  • the front 13 of the hopper 10 comprises one, or preferably two flaps 14 hinged about a horizontal axis 15, intended to be gradually raised ( Figure 3) to facilitate the rearward movement of the coating material poured into hopper 10 by trucks.
  • the rear 16 of the hopper 10 has several openings 17 in the form of tunnels arranged in the rear wall 18 of the hopper 10, at the lower part thereof.
  • tunnels 17 open above the open upper part 19 of two bottomless casings 20 of pre-spreading mounted on the rear part 16 of the hopper 10, outside of the latter.
  • a helical conveyor screw 21 whose direction of rotation is chosen so that coated materials falling into the conveyor screws are transported to the lateral sides 22 of the feed device, as shown schematically by the arrows F in Figure 4.
  • the pre-spreading housings 20 provided with their conveyor screws 21 can be moved laterally relative to the longitudinal axis of the device feed, by any adjustment means known per se and not shown, for the purpose of adjusting the desired pre-spread width.
  • the lateral adjustment of the conveyor screws 21 can be controlled, by any suitable servo device, at the adjustment chosen for the spreading width L of the finisher.
  • the hopper 10 In its lower wall 11, the hopper 10 has a central opening 23 and two or more lateral openings 24. Under the lateral openings 24 are disposed lateral means for transporting the mixes towards the rear 16 of the hopper 10 and towards the lateral tunnels 17 opening into the pre-spreading housings 20.
  • These lateral transport hubs consist in particular of conveyor chains with bars 25, driven autonomously by motor means (not shown) integrated into the supply device 7 itself. It further comprises autonomous propulsion means, distinct from those of the finisher 1, and constituted in particular by the tracks 9, but the drive of which is controlled by any servo means known per se, to the propulsion means of the finisher .
  • These transport means 26 are in particular constituted by one or more conveyor chains 26 with bars forming part of the finisher 1 itself, arranged under the central opening 23 of the feed device 7 according to the invention, for withdrawing the coated materials and bringing them towards the rear 27 of the finisher 1 (FIG. 5).
  • FIG. 5 representing the finisher-feed device assembly during its operation, which is shown diagrammatically while trucks 3 are loading the hopper 10.
  • the finisher 1 When the assembly is in place, the finisher 1 is placed without touching it against the rear 16 of the feed device 7 according to the invention, so that its bar conveyors 26 are placed under the opening central 23 of the supply device.
  • trucks 3 come to position their tilting skip above the front part 13 of the supply device 7. By raising their skip, they unload the mixes into the hopper 10, then set off again to seek a new cargo. Immediately, other filled trucks can appear to ensure continuity of loading.
  • the finisher 1 and its feed device 7 start to advance, under the pressure of their respective track trains.
  • the lateral conveyor chains 25 of the feed device 7 are started, and likewise for the central conveyor chains 26 of the paver 1.
  • the lateral conveyor chains 25 bring the coated materials to the conveyor screws 21 which spread them laterally. in the lateral pre-spreading zones 28, over a certain thickness e less than the final thickness E of the coating layer at the outlet of the finisher 1.
  • the thickness of pre-spreading e can be chosen by the adjustment in height of a transverse rear blade 20A provided in each casing 20.
  • the central conveyor chains 26 of the paver 1 bring the coated materials to the conveyor screw 29 of the paver 1, in a manner known per se.
  • the conveyor screw 29 of the paver 1 spreads the asphalt over the entire width L of the working area of the paver 1, that is to say the central area 30 and the pre-spread areas 28 where the paver 1 completes the thickness e already reached at the outlet of the pre-spreading casings 20 of the supply device 7.
  • FIG. 6 The result of the spreading method according to the invention is illustrated in FIG. 6.
  • the zones 28 delimited by a broken line correspond to a first phase of the method.
  • a coating thickness e is of the castle, about e d by feeding ispositif 7 along two strips whose width corresponds to the width of the housings 20 pre-spreading.
  • the second phase of the spreading method according to the invention is carried out by the paver 1. It consists in laying the road surface in the central zone 30, over a thickness E corresponding to the final level of the coating layer, and in completing the spread in the lateral zones 28 until reaching the final level.
  • This operating mode is enabled by the presence of the supply device 7 which ensures the pre-spread in the lateral zones 28.
  • the spreading method, and the feeding device 7 according to the invention have several advantages. As shown by the arrows f (FIG. 5), the mixes to be spread no longer pass only through a central opening and central conveying means of the paver, to be distributed over the entire width by the conveyor screw of the paver. However, they also pass laterally with respect to the central conveying means, which has the effect of limiting the lateral displacements of the coated materials, and consequently of increasing the rate of work of the finisher-feed device assembly.
  • the feed device 7 is independent of the paver, and its forward speed is controlled by that of the paver by appropriate proximity sensors.
  • the device 7 could be secured to the finisher by an appropriate coupling.

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

Claims (14)

  1. Verfahren zur Verteilung von Straßenbelagmaterial in einem Band der Breite L und der Dicke E, dadurch gekennzeichnet, daß
    zunächst Belagmaterial auf wenigstens einer Vorverteilungszone (28) verteilt wird, wobei diese Vorverteilung auf einer Breite 2l, die kleiner als L ist, und in einer Dicke e, die kleiner als E ist, erfolgt, dann
    das Belagmaterial auf die Breite L über die Vorverteilungszone oder -zonen (28) hinaus und auf den Rest der Breite L bis zu der Dicke E verteilt wird, derart, daß ein Fertigbelagband der Breite L und der Dicke E gewonnen wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zwei seitliche Vorverteilungszonen (28) verwendet werden.
  3. Speisevorrichtung (7) für eine Maschine zur Verteilung von Straßenbelagmateriai, vom Typ Straßenfertiger (1) oder dergleichen, die für eine Gewährleistung einer Verteilung des Materials auf der gesamten zu belegenden Breite (L) und in einer bestimmten Dicke (E) eingerichtet ist, wobei die Speisevorrichtung (7) für eine Anordnung vorne am Straßenfertiger (1) bestimmt ist und einen Bunker (10), der mit einer Öffnung (23) zum Abziehen des Belagmaterials durch den Straßenfertiger (1) versehen ist, und Mittel (21) zur Vorverteilung des Materials auf einer Breite (21), die kleiner als die zu belegende Breite (L) ist, aufweist, wobei die Mittel eine Querklinge (20A) aufweisen, dadurch gekennzeichnet, daß die Querklinge (20A) zur Einstellung der Dicke des Vorverteilungsmaterials auf einen Wert (e), der kleiner als die bestimmte Dicke (E) ist, eingerichtet ist.
  4. Speisevorrichtung (7) nach Anspruch 3, dadurch gekennzeichnet, daß die Vorverteilungsmittel (21) wenigstens eine Transportschnecke (21) aufweisen, die im Bereich wenigstens eines seitlichen hinteren Teils (16) des Bunkers (10) angeordnet ist.
  5. Speisevorrichtung (7) nach Anspruch 4, dadurch gekennzeichnet, daß sie Mittel (25) zum Überführen des Materials zwischen dem Bunker (10) und der Transportschnecke (21) aufweist.
  6. Speisevorrichtung (7) nach Anspruch 4 oder Anspruch 5, dadurch gekennzeichnet, daß die Transportschnecke (21) in Bezug auf die Längsachse der Speisevorrichtung (7) seitlich verstellbar ist.
  7. Speisevorrichtung (7) nach Anspruch 6, dadurch gekennzeichnet, daß die seitliche Verstellung der Transportschnecke (21) der Einstellung der Verteilungsbreite (L) des Straßenfertigers (1) unterworfen ist.
  8. Speisevorrichtung (7) nach irgendeinem der Ansprüche 4 bis 7, dadurch gekennzeichnet, daß die Querklinge (20A) hinter der Transportschnecke (21) vorgesehen ist.
  9. Speisevorrichtung (7) nach Anspruch 5, dadurch gekennzeichnet, daß die Mittel (25) zum Überführen des Materials durch wenigstens einen Sprossenförderer (25) gebildet sind, der unter wenigstens einer seitlichen Öffnung (24) angeordnet ist, die in der unteren Wand (11) des Bunkers (10) ausgebildet ist.
  10. Speisevorrichtung (7) nach irgendeinem der Ansprüche 3 bis 9, dadurch gekennzeichnet, daß der Bunker (10) eine in seiner unteren Wand (11) ausgebildete Mittelöffnung (23) aufweist, unter welcher Überführungsmittel (26) des Straßenfertigers zur Anordnung gelangen, die den Straßenfertiger (1) mit Belagmaterial speisen.
  11. Speisevorrichtung (7) nach irgendeinem der Ansprüche 3 bis 10, dadurch gekennzeichnet, daß sie unabhängige Vortriebsmittel (9), insbesondere Raupen (9), aufweist, die Motormitteln des Straßenfertigers unterstehen.
  12. Speisevorrichtung (7) nach irgendeinem der Ansprüche 3 bis 11, dadurch gekennzeichnet, daß sie vor dem Bunker (10) Mittel (31) zur Aufnahme von zwei Lastwagen (3) nebeneinander aufweist.
  13. Straßenfertiger (1) zur Verteilung von Straßenbelagmaterial, dadurch gekennzeichnet, daß er im Bereich Seines vorderen Teils eine Speisevorrichtung (7) nach irgendeinem der Ansprüche 3 bis 12 aufweist.
  14. Straßenfertiger nach Anspruch 13, dadurch gekennzeichnet, daß die Speisevorrichtung mit dem Straßenfertiger fest verbunden ist.
EP19940400756 1993-04-13 1994-04-06 Verfahren zum kontinuierlichen Aufbringen von Bituminösem Mischgut, Zufuhrvorrichtung für Bitumenauftragvorrichtung und entsprechende Strassenfertiger Expired - Lifetime EP0620320B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9304326 1993-04-13
FR9304326A FR2704010B1 (fr) 1993-04-13 1993-04-13 Procede de repandage en continu d'enrobes, dispositif d'alimentation pour engin de repandage d'enrobes, et finisseur correspondant.

Publications (2)

Publication Number Publication Date
EP0620320A1 EP0620320A1 (de) 1994-10-19
EP0620320B1 true EP0620320B1 (de) 1997-11-12

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EP19940400756 Expired - Lifetime EP0620320B1 (de) 1993-04-13 1994-04-06 Verfahren zum kontinuierlichen Aufbringen von Bituminösem Mischgut, Zufuhrvorrichtung für Bitumenauftragvorrichtung und entsprechende Strassenfertiger

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EP (1) EP0620320B1 (de)
FR (1) FR2704010B1 (de)
MA (1) MA23163A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104032653B (zh) * 2014-06-12 2016-09-14 陆松 一种透气型塑胶跑道用高效摊铺机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049413B (de) *
DE1170329B (de) * 1962-11-14 1964-05-14 Strabag Bau Ag Verfahren zum lagenweisen Einbau von Kerndichtungen, insbesondere bituminoesen, fuerStaudaemme im Zuge der lagenweise erfolgenden Dammschuettung und Vorrichtung zur Durch-fuehrung des Verfahrens
US3636832A (en) * 1970-03-10 1972-01-25 Iowa Mfg Co Dual paver

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FR2704010A1 (fr) 1994-10-21
FR2704010B1 (fr) 1995-07-21
MA23163A1 (fr) 1994-12-31
EP0620320A1 (de) 1994-10-19

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