EP0620320A1 - 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
EP0620320A1
EP0620320A1 EP94400756A EP94400756A EP0620320A1 EP 0620320 A1 EP0620320 A1 EP 0620320A1 EP 94400756 A EP94400756 A EP 94400756A EP 94400756 A EP94400756 A EP 94400756A EP 0620320 A1 EP0620320 A1 EP 0620320A1
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EP
European Patent Office
Prior art keywords
spreading
finisher
feeding device
hopper
width
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
EP94400756A
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English (en)
French (fr)
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EP0620320B1 (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
Original Assignee
SCREG Routes et Travaux Publics
SCREG SA
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Filing date
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.
  • the object of the present invention is to remedy the drawbacks of the spreading method and of the finishers according to the prior art, and to propose a new method of 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.
  • two lateral pre-spreading zones are used.
  • the invention also relates to a feed device for a machine for spreading a road surface material of the paver type or similar, said feed device being intended to be positioned in front of the paver and comprising a hopper. provided with an opening for taking off the coating material by the paver, characterized in that it comprises means for pre-spreading said material over part of the width of the paver, the final spreading being provided by the paver over the whole width of it.
  • 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.
  • 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 to the finishing zone 4 passes through a relatively narrow intermediate zone 5, corresponding to an opening in the finisher hopper, through which the asphalt mixes are taken from the feed 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 are in particular made up of conveyor chains with bars 25, driven autonomously by motor means (not shown) integrated into the supply device 7 itself. This 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 asphalt 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 work area of the paver 1, c that is to say the central zone 30 and the pre-spreading zones 28 where the finisher 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)
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
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.
FR9304326 1993-04-13

Publications (2)

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

Family

ID=9446007

Family Applications (1)

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

Country Status (3)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111395132A (zh) * 2019-02-14 2020-07-10 陕西华中机械有限公司 一种伸缩缝切割机构、混凝土摊铺机构和混凝土摊铺机
CN111395116A (zh) * 2019-02-14 2020-07-10 陕西华中机械有限公司 一种混凝土摊铺机
CN111395115A (zh) * 2019-02-14 2020-07-10 陕西华中机械有限公司 一种混凝土摊铺机构和混凝土摊铺机
CN116005521A (zh) * 2022-12-28 2023-04-25 四川省交通建设集团有限责任公司 一种桥梁道路施工用沥青摊铺施工工具
CN116356638A (zh) * 2023-05-19 2023-06-30 河南交投交通建设集团有限公司豫南分公司 一种公路沥青摊铺设备

Families Citing this family (1)

* 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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049413B (de) *
GB975670A (en) * 1962-11-14 1964-11-18 Strabag Bau Ag Method and apparatus for incorporating interior packing in hydraulic engineering structures,primarily for the insertion of impervious aprons,preferably of bituminous material,in dams
US3636832A (en) * 1970-03-10 1972-01-25 Iowa Mfg Co Dual paver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1049413B (de) *
GB975670A (en) * 1962-11-14 1964-11-18 Strabag Bau Ag Method and apparatus for incorporating interior packing in hydraulic engineering structures,primarily for the insertion of impervious aprons,preferably of bituminous material,in dams
US3636832A (en) * 1970-03-10 1972-01-25 Iowa Mfg Co Dual paver

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VARLET ET AL: "LA PREMIÈRE CHAUSSÉE NEUVE EN BÉTON ARMÉ CONTINU SUR L AUTOROUTE A71", TRAVAUX, no. 615, November 1986 (1986-11-01), PARIS FR, pages 48 - 52 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111395132A (zh) * 2019-02-14 2020-07-10 陕西华中机械有限公司 一种伸缩缝切割机构、混凝土摊铺机构和混凝土摊铺机
CN111395116A (zh) * 2019-02-14 2020-07-10 陕西华中机械有限公司 一种混凝土摊铺机
CN111395115A (zh) * 2019-02-14 2020-07-10 陕西华中机械有限公司 一种混凝土摊铺机构和混凝土摊铺机
CN116005521A (zh) * 2022-12-28 2023-04-25 四川省交通建设集团有限责任公司 一种桥梁道路施工用沥青摊铺施工工具
CN116356638A (zh) * 2023-05-19 2023-06-30 河南交投交通建设集团有限公司豫南分公司 一种公路沥青摊铺设备

Also Published As

Publication number Publication date
MA23163A1 (fr) 1994-12-31
FR2704010A1 (fr) 1994-10-21
FR2704010B1 (fr) 1995-07-21
EP0620320B1 (de) 1997-11-12

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