EP0484220A1 - Asphalt paving machine - Google Patents
Asphalt paving machine Download PDFInfo
- Publication number
- EP0484220A1 EP0484220A1 EP19910402882 EP91402882A EP0484220A1 EP 0484220 A1 EP0484220 A1 EP 0484220A1 EP 19910402882 EP19910402882 EP 19910402882 EP 91402882 A EP91402882 A EP 91402882A EP 0484220 A1 EP0484220 A1 EP 0484220A1
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- EP
- European Patent Office
- Prior art keywords
- hopper
- machine
- materials according
- road materials
- processing road
- 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.)
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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
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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
- E01C19/488—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 rollers for consolidating or finishing combined with tamping, vibrating, pressing or smoothing consolidation or finishing means
Definitions
- the object of the present invention relates to a machine for processing road materials generally consisting of aggregates coated or not with bituminous hydraulic binders, for example bituminous concretes.
- the machine according to the invention is in particular intended to ensure the spreading of road surface layers which, depending on the circumstances, must be applied both in ultra-thin layers of thickness as constant as possible, or in layers of greater thickness, in particular to ensure a reprofiling of the roadway.
- the object of the present invention therefore finds its application in the field of maintenance and production of various types of pavement layers.
- the machine according to the invention also has the advantage of being able to adapt very easily and very quickly to the application of other types of coatings, for example to the application of layers of greater thickness, in particular in the case of reprofiling of very irregular pavements.
- the present invention also aims to design a machine allowing the execution of spreading road materials at much higher speeds than those observed with all types of traditional pavers. With the machine object of the present invention, it is possible to reach application speeds of up to 30 meters per minute.
- the machine for processing road materials is of the type comprising a chassis equipped with rolling means and capable of being coupled to a traction means intended to ensure its advancement on the ground. It is characterized in that it includes a densification hopper and distribution of said material, hopper whose lower orifice is disposed near the ground; It is further characterized by the presence of a vibrating bar mounted in the immediate vicinity of the rear transverse edge of said hopper.
- the hopper (16) is mounted on articulated arms (22) on a transverse pivot axis (24) arranged in front of said hopper and being able to be supported by idler wheels (26), said arms pressing behind the hopper on a support that can participate in compaction (28) such as a smoothing plate and / or a cylinder.
- the articulation on the transverse pivot axis (24) can be left free or blocked. It is left free, so that the vertical differences recorded by the vehicle are not reflected on the base of the machine relative to the support on the ground, for the implementation of ultra-thin layers with almost constant thickness, or it is locked and the freewheels (26) simultaneously excamoté in order to apply a layer coating with reprofiling effect.
- a machine for processing road materials characterized in that the hopper (16) is towed by said vehicle, by means of two arms (20) articulated, each on said vehicle on an axis (21), said lateral arms (22) themselves being articulated on the arms (20) at the level of said transverse pivot axis 24.
- the entire left part of the figure with the general reference 10 represents a feeder tractor.
- This feeder tractor 10 fulfills the following main functions. By its front part, it pushes the semi-trailer trucks during the spreading, it receives and transfers the materials spilled by these trucks in the receiving and storage capacity 12. The transfer to the implementation tool, at a height suitable, being carried out by a transfer member, for example a conveyor with bars 14.
- the feed tractor must have an adequate feed speed range.
- the spreading machine according to the present invention is towed by the self-propelled feeder vehicle 10 without the vertical differences recorded by this vehicle being reflected on the base of the tool relative to the support.
- the machine according to the present invention firstly comprises a densification and distribution hopper 16.
- the bar conveyor 14 Given the required height of the hopper 16, the bar conveyor 14 must be arranged in an inclined manner, so that its upper discharge end is located at the right of the upper opening of the densification and distribution hopper 16 .
- the hopper 16 advantageously having a width of the order of 3 meters may, in practice, have capacities close to approximately 4 tonnes of coated materials.
- This hopper 16 is also coupled to the feeder tractor 10 which receives the materials and has for this purpose a first receiving and storage capacity 12 to which is added the reserve constituted by the stream of materials accumulated on the conveyor 14.
- the densification and distribution hopper 16 has a lower orifice 18 disposed close to the ground.
- this opening 18 is located a few centimeters from the ground, and this so as to avoid any segregation of the road material towards the front.
- a flap 19 can also be placed along the lower transverse edge before the hopper 16.
- This hopper 16 is towed by means of two articulated arms 20, each on an axis 21 preferably placed in the middle of the wheelbase of the traction vehicle.
- the hopper 16 can of course be fixedly mounted on its chassis with a wheelbase which will be adapted to the particular mode of implementation chosen.
- a short wheelbase that is to say as close as possible to the front and rear sides of the hopper, will make it possible to follow the profile along the support as closely as possible.
- the hopper 16 is mounted on lateral arms 22 themselves articulated on the arms 20 at a transverse pivot axis 24 which is arranged in front of the hopper 16 and which is supported by two idler wheels 26.
- the lateral arms 22 are also supported, behind the hopper 16, on a precompaction device.
- the latter may consist of a smoothing plate and / or a cylinder.
- One and / or the other of the two precompaction devices can advantageously be animated by a vibratory movement.
- this precompaction device is a cylinder 28.
- the hopper is liftably mounted, mainly for transfer, by means of two jacks 30 placed on either side of the latter.
- the densification and distribution hopper of the road material has a shape which has been determined to ensure good permanent flow of said material.
- such a hopper 16 may have a cross section, in the direction of advance of the machine, narrowing downwards. To this end, one and / or the other of the front and rear transverse walls of this hopper 16 can be inclined.
- the determination of the particular shape of the hopper which may possibly depend on the particular nature of the road material spread, in fact results from a compromise between the need to ensure a permanent flow of the material, and the obligation maintain a sufficient filling height to allow the material accumulated in the hopper 16 to perform a densification function under the effect of its own weight, at the base of the hopper.
- the densification function is of particular interest in the application of layers of a certain thickness, but it also has a decisive advantage in the case of the application of ultra-thin layers since, in such a case situation, under the effect of the weight of the material accumulated in the hopper 16, a ground pressure is obtained which favors the fixing of the aggregates in the bonding layer.
- the assembly as shown in the appended figure may also be equipped with a transverse boom for spraying bituminous binders, bearing the reference 32.
- the sprayer boom 32 is arranged in front of the hopper 16, it can be supplied by a supply truck depending on the machine.
- the opening 18 had a transverse dimension close to 80 centimeters.
- the particular mounting of the hopper 16 on the chassis allows the application of the material in ultra-thin layers.
- the hopper is mounted on arms 22 articulated on a pivot axis 24, which is arranged in front of said hopper and is supported by the idler wheels 26. In this case, spreading is carried out at constant thickness.
- the articulation of the transverse pivot axis 24 is capable of being locked, and the idler wheels 26 can be simultaneously retracted, this so as to transform this method of mounting the hopper into another type of mounting allowing a coating of layers generally applied in greater thickness.
- a transverse screw 34 ensuring the distribution of the material accumulated in the hopper is advantageously mounted in the upper part of the latter.
- feelers for detecting the minimum level of the material, these feelers being designed to control the feed device of the hopper.
- the hopper 16 is also equipped with a shutter 36 which makes it possible to close the lower part of the hopper 16.
- the shutter 36 cuts the vein of material contained in the hopper in contact with the support and consequently isolates the content of the hopper from the support, which makes it possible to obtain stops and recoveries with straight and straight edges. transverse.
- the shutter 36 is retracted by a hydraulic control cylinder, which again makes it possible to release the material present in the hopper.
- the second essential element of the patented combination consists of the vibrating bar bearing the general reference 38, which is mounted in the immediate vicinity of the rear transverse edge 40 of the hopper.
- the vibrating bar 38 is animated by a vibratory movement, either mono- or polydirectional.
- the unidirectional vibratory movements will generally be vertical.
- the frequency of the vibrations of the bar 38 is adjustable between values between 5 and 50 Hz.
- the amplitude of the vibrations of the bar 38 can also be adjustable, for example in ranges of values between 1 and 8 millimeters.
- an amplitude of variation of the order of 4 millimeters has led to completely satisfactory results in the case of concrete. traditional bituminous.
- the rear edge 40 of the hopper 16 is equipped with a deflector not shown in detail, advantageously disposed in contact with the vibrating bar 38. This bringing this deflector into contact with the bar 38 can be achieved in practice using an elastic return means.
- the vibration of the bar 38 participates in the crimping of the aggregates together on the bonding layer, particularly in the case of the production of very thin layers, that is to say when the the thickness of the layer is close to the largest particle size of the material used.
- the vibrating bar 38 is designed with a profile which makes it possible to facilitate the cutting or shearing of the material as well as its positioning on the bonding layer.
- a doming adjustment device in the center of this vibrating bar 38 ensures the spreading of roof materials, positive or negative.
- This vibrating bar is advantageously produced in a hydraulically or mechanically extendable manner at the level of these two free ends, which allows the realization of variable working widths.
- Such telescopic extensions of the vibrating bar 38 also make it possible to promote the production of the joints, the monitoring of the edges and the like because they can be controlled according to particular situations manually or automatically.
- Another way to vary the working width is to make a telescopic hopper.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Road Paving Machines (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Road Paving Structures (AREA)
- Working-Up Tar And Pitch (AREA)
- Road Repair (AREA)
- Soil Working Implements (AREA)
- Earth Drilling (AREA)
Abstract
La présente invention concerne une machine de mise en oeuvre de matériaux routiers, en particulier pour le répandage de couches de revêtement routier destinées à être appliquées en couches de différentes épaisseurs, notamment de béton bitumineux en couches ultra-minces, du type comportant un châssis équipé de moyens de roulement et apte à être couplé à un moyen de traction destiné à assurer son avancement sur le sol, caractérisée en ce qu'elle comporte une trémie (16) de densification et de distribution dudit matériau dont l'orifice inférieur (18) est disposé à proximité du sol, ainsi qu'une barre vibrante (38) montée au voisinage immédiat du bord transversal arrière (40) de ladite trémie (16).The present invention relates to a machine for processing road materials, in particular for spreading road surface layers intended to be applied in layers of different thicknesses, in particular bituminous concrete in ultra-thin layers, of the type comprising a chassis equipped rolling means and able to be coupled to a traction means intended to ensure its advancement on the ground, characterized in that it comprises a hopper (16) for densification and distribution of said material including the lower orifice (18) is arranged close to the ground, as well as a vibrating bar (38) mounted in the immediate vicinity of the rear transverse edge (40) of said hopper (16).
Description
L'objet de la présente invention concerne une machine de mise en oeuvre de matériaux routiers généralement constitués par des granulats enrobés ou non par des liants hydrauliques bitumineux, par exemple des bétons bitumineux.The object of the present invention relates to a machine for processing road materials generally consisting of aggregates coated or not with bituminous hydraulic binders, for example bituminous concretes.
La machine selon l'invention est en particulier destinée à assurer le répandage de couches de revêtement routier qui, en fonction des circonstances, doivent être appliquées aussi bien en couches ultra-minces d'épaisseur aussi constante que possible, ou bien en couches d'épaisseur plus grande, notamment en vue d'assurer un reprofilage de la chaussée.The machine according to the invention is in particular intended to ensure the spreading of road surface layers which, depending on the circumstances, must be applied both in ultra-thin layers of thickness as constant as possible, or in layers of greater thickness, in particular to ensure a reprofiling of the roadway.
L'objet de la présente invention trouve donc son application dans le domaine de l'entretien et de la réalisation de divers types de couches de chaussée.The object of the present invention therefore finds its application in the field of maintenance and production of various types of pavement layers.
Le répandage de bétons bitumineux en couches ultra-minces, i.e. correspondant à une épaisseur voisine de la dimension granulométrique maximale des gravillons, soulève des problèmes souvent difficiles voire impossibles à résoudre de façon satisfaisante.The spreading of bituminous concretes in ultra-thin layers, i.e. corresponding to a thickness close to the maximum particle size dimension of gravel, raises problems that are often difficult or even impossible to solve satisfactorily.
Avec les appareils actuels, ces difficultés ne peuvent être écartées qu'en préparant soigneusement le support pour lui conférer une surface reprofilée.With current devices, these difficulties can only be overcome by carefully preparing the support to give it a reprofiled surface.
En effet, le répandage de couches ultra-minces de bétons bitumineux endommage très souvent les tables des finisseurs qui s'usent prématurément par abrasion au contact des granulats qui émergent de la couche ultra-mince de revêtement.Indeed, the spreading of ultra-thin layers of bituminous concrete very often damages the tables of the finishers which wear out prematurely by abrasion in contact with the aggregates which emerge from the ultra-thin coating layer.
Enfin, les plus gros gravillons sont parfois entraînés par le bord arrière de la table du finisseur, ce qui provoque des traînées de gravillons et engendre des inégalités de surface par peignage.Finally, the largest gravel is sometimes entrained by the rear edge of the finisher's table, which causes streaks of gravel and creates uneven surfaces by combing.
Ces inconvénients majeurs peuvent être définitivement écartés à l'aide de la machine de mise en oeuvre selon l'invention.These major drawbacks can be definitively eliminated with the aid of the processing machine according to the invention.
La machine selon l'invention présente également l'avantage de pouvoir très facilement et très rapidement s'adapter à l'application d'autres types de revêtements, par exemple à l'application de couches d'épaisseur plus grande, en particulier dans le cas de reprofilage de chaussées très irrégulières.The machine according to the invention also has the advantage of being able to adapt very easily and very quickly to the application of other types of coatings, for example to the application of layers of greater thickness, in particular in the case of reprofiling of very irregular pavements.
La présente invention a également eu pour but de concevoir une machine permettant l'exécution de répandage de matériaux routiers à des vitesses beaucoup plus élevées que celles observées avec tous les types de finisseurs traditionnels. Avec la machine objet de la présente invention, il est possible d'atteindre des vitesses d'application allant jusqu'à 30 mètres par minute.The present invention also aims to design a machine allowing the execution of spreading road materials at much higher speeds than those observed with all types of traditional pavers. With the machine object of the present invention, it is possible to reach application speeds of up to 30 meters per minute.
Conformément à la présente invention, la machine de mise en oeuvre de matériaux routiers est du type comportant un châssis équipé de moyens de roulement et apte à être couplé à un moyen de traction destiné à assurer son avancement sur le sol. Elle est caractérisée en ce qu'elle comporte une trémie de densification et de distribution dudit matériau, trémie dont l'orifice inférieur est disposé à proximité du sol ; Elle se caractérise en outre par la présence d'une barre vibrante montée au voisinage immédiat du bord transversal arrière de ladite trémie.According to the present invention, the machine for processing road materials is of the type comprising a chassis equipped with rolling means and capable of being coupled to a traction means intended to ensure its advancement on the ground. It is characterized in that it includes a densification hopper and distribution of said material, hopper whose lower orifice is disposed near the ground; It is further characterized by the presence of a vibrating bar mounted in the immediate vicinity of the rear transverse edge of said hopper.
En outre, avantageusement, la trémie (16) est montée sur des bras articulés (22) sur un axe de pivotement transversal (24) agencé en avant de ladite trémie et pouvant être supporté par des roues folles (26), lesdits bras s'appuyant en arrière de la trémie sur un support pouvant participer au compactage (28) tel qu'une plaque lisseuse et/ou un cylindre.In addition, advantageously, the hopper (16) is mounted on articulated arms (22) on a transverse pivot axis (24) arranged in front of said hopper and being able to be supported by idler wheels (26), said arms pressing behind the hopper on a support that can participate in compaction (28) such as a smoothing plate and / or a cylinder.
Selon l'invention, l'articulation sur l'axe de pivotement transversal (24) peut être laissée libre ou bloquée. Elle est laissée libre, de sorte que les dénivelés verticaux enregistrés par le véhicule ne soient pas répercutés sur l'assiette de la machine par rapport au support au sol, pour la mise en oeuvre des couches ultra-minces à épaisseur quasiment constante, ou elle est bloquée et les roues libres (26) simultanément excamotées en vue d'appliquer un revêtement de couche avec effet de reprofilage.According to the invention, the articulation on the transverse pivot axis (24) can be left free or blocked. It is left free, so that the vertical differences recorded by the vehicle are not reflected on the base of the machine relative to the support on the ground, for the implementation of ultra-thin layers with almost constant thickness, or it is locked and the freewheels (26) simultaneously excamoté in order to apply a layer coating with reprofiling effect.
Dans un mode de réalisation appropriée, une machine de mise en oeuvre de matériaux routiers caractérisée en ce que la trémie (16) est tractée par ledit véhicule, par l'intermédiaire de deux bras (20) articulés, chacun sur ledit véhicule sur un axe (21), lesdits bras latéraux (22) étant eux-mêmes articulés sur les bras (20) au niveau dudit axe de pivotement transversal 24.In an appropriate embodiment, a machine for processing road materials, characterized in that the hopper (16) is towed by said vehicle, by means of two arms (20) articulated, each on said vehicle on an axis (21), said lateral arms (22) themselves being articulated on the arms (20) at the level of said
D'autres caractéristiques et avantages de l'objet de la présente invention apparaîtront à la lecture de la description détaillée faite ci-après notamment en référence à la figure annexée qui représente une vue schématique de côté de la machine selon l'invention, couplée à un tracteur alimenteur.Other characteristics and advantages of the subject of the present invention will appear on reading the detailed description given below in particular with reference to the appended figure which represents a schematic side view of the machine according to the invention, coupled with a feed tractor.
Toute la partie gauche de la figure portant la référence générale 10 représente un tracteur alimenteur.The entire left part of the figure with the
Il s'agit là d'un moyen de traction particulier destiné à assurer l'avancement sur le sol de la machine selon l'invention.This is a particular traction means intended to ensure the advancement on the ground of the machine according to the invention.
Ce tracteur alimenteur 10 remplit les fonctions principales suivantes. Par sa partie avant, il pousse les camions semi-remorques pendant le répandage, il reçoit et transfert les matériaux déversés par ces camions dans la capacité de réception et de stockage 12. Le transfert vers l'outil de mise en oeuvre, à une hauteur appropriée, étant effectué par un organe de transfert par exemple un convoyeur à barreaux 14.This
Enfin, le tracteur alimenteur doit présenter une gamme de vitesse d'avance adéquate.Finally, the feed tractor must have an adequate feed speed range.
Dans l'utilisation de répandage de couche ultra-mince, la machine de répandage selon la présente invention est tractée par le véhicule automoteur alimenteur 10 sans que les dénivelés verticaux enregistrés par ce véhicule soient répercutés sur l'assiette de l'outil par rapport au support.In the use of ultra-thin layer spreading, the spreading machine according to the present invention is towed by the self-propelled
La machine selon la présente invention comprend tout d'abord une trémie de densification et de distribution 16.The machine according to the present invention firstly comprises a densification and
Compte-tenu de la hauteur nécessaire de la trémie 16, le convoyeur à barreaux 14 doit être agencé de façon inclinée, de façon que son extrémité haute de déversement se situe au droit de l'ouverture supérieure de la trémie de densification et de distribution 16.Given the required height of the
Ainsi, on dispose d'une capacité de stockage importante du matériau à appliquer.Thus, there is a large storage capacity of the material to be applied.
Tout d'abord, la trémie 16 ayant avantageusement une largeur de l'ordre de 3 mètres peut présenter, dans la pratique, des capacités voisines d'environ 4 tonnes d'enrobés.First of all, the
Cette trémie 16 est en outre attelée au tracteur alimenteur 10 qui reçoit les matériaux et présente à cet effet une première capacité de réception et de stockage 12 à laquelle s'ajoute la réserve constituée par la veine de matériaux accumulés sur le convoyeur 14.This
Conformément à la présente invention, la trémie de densification et de distribution 16 présente un orifice inférieur 18 disposé à proximité du sol.According to the present invention, the densification and
Dans la pratique, cette ouverture 18 se situe à quelques centimètres du sol, et ceci de manière à éviter toute ségrégation du matériau routier vers l'avant.In practice, this opening 18 is located a few centimeters from the ground, and this so as to avoid any segregation of the road material towards the front.
Une bavette 19 peut en outre être mise en place le long du bord transversal inférieur avant de la trémie 16.A
Cette trémie 16 est tractée par l'intermédiaire de deux bras articulés 20, chacun sur un axe 21 placé de préférence au milieu de l'empattement du véhicule de traction.This
La trémie 16 peut bien sûr être montée fixe sur son châssis avec un empattement qui sera adapté au mode de mise en oeuvre particulier choisi. C'est ainsi qu'un empattement court, c'est-à-dire le plus proche possible des flancs avant et arrière de la trémie, va permettre de suivre au plus juste le profil en long du support.The
Dans le mode de réalisation particulier décrit, la trémie 16 est montée sur des bras latéraux 22 eux-mêmes articulés sur les bras 20 au niveau d'un axe de pivotement transversal 24 qui est agencé en avant de la trémie 16 et qui est supporté par deux roues folles 26. Les bras latéraux 22 s'appuient par ailleurs, en arrière de la trémie 16, sur un dispositif de précompactage. Ce dernier peut être constitué par une plaque lisseuse et/ou un cylindre. L'un et/ou l'autre des deux dispositifs de précompactage peut avantageusement être animé d'un mouvement vibratoire.In the particular embodiment described, the
Dans le mode de réalisation représenté, ce dispositif de précompactage est un cylindre 28.In the embodiment shown, this precompaction device is a
Bien entendu, la trémie est montée de façon relevable, principalement pour le transfert, par l'intermédiaire de deux vérins 30 placés de part et d'autre de cette dernière.Of course, the hopper is liftably mounted, mainly for transfer, by means of two
La trémie de densification et de distribution du matériau routier présente une forme qui a été déterminée pour assurer un bon écoulement permanent dudit matériau.The densification and distribution hopper of the road material has a shape which has been determined to ensure good permanent flow of said material.
Dans la pratique, une telle trémie 16 peut présenter une section droite, dans la direction d'avancement de la machine, se rétrécissant vers le bas. A cet effet, l'une et/ou l'autre des parois transversales avant et arrière de cette trémie 16 peuvent être inclinées.In practice, such a
Dans la pratique, la détermination de la forme particulière de la trémie, laquelle peut éventuellement dépendre de la nature particulière du matériau routier répandu, résulte en fait d'un compromis entre la nécessité d'assurer un écoulement permanent du matériau, et l'obligation de maintenir une hauteur de remplissage suffisante pour permettre au matériau accumulé dans la trémie 16 d'assurer une fonction de densification sous l'effet de son propre poids, à la base de la trémie.In practice, the determination of the particular shape of the hopper, which may possibly depend on the particular nature of the road material spread, in fact results from a compromise between the need to ensure a permanent flow of the material, and the obligation maintain a sufficient filling height to allow the material accumulated in the
Il est clair que la fonction de densification présente un intérêt tout particulier dans l'application de couches d'une certaine épaisseur, mais elle présente également un avantage décisif dans le cas de l'application de couches ultra-minces étant donné que, dans pareille situation, sous l'effet du poids de la matière accumulée dans la trémie 16, on obtient une pression au sol qui favorise la fixation des granulats dans la couche d'accrochage.It is clear that the densification function is of particular interest in the application of layers of a certain thickness, but it also has a decisive advantage in the case of the application of ultra-thin layers since, in such a case situation, under the effect of the weight of the material accumulated in the
En vue d'assurer le dépôt d'une telle couche d'accrochage, l'ensemble tel que représenté à la figure annexée peut en outre être équipé d'une rampe transversale de pulvérisation de liants bitumineux, portant la référence 32.In order to ensure the deposition of such a bonding layer, the assembly as shown in the appended figure may also be equipped with a transverse boom for spraying bituminous binders, bearing the
Bien entendu, la rampe de pulvérisation 32 est disposée en avant de la trémie 16, elle peut être alimentée par un camion ravitailleur suivant la machine.Of course, the
Différentes expérimentations ont été réalisées afin de déterminer quelle devait être la hauteur moyenne de remplissage de la trémie, en régime de fonctionnement permanent, pour assurer une bonne fonction de densification, de distribution et d'accrochage du granulat sur la couche de liant.Various experiments were carried out in order to determine what the average filling height of the hopper should be, in permanent operating conditions, to ensure a good densification, distribution and bonding function of the aggregate on the binder layer.
Il s'est avéré qu'une hauteur minimale de remplissage comprise entre 0,5 et 1,2 mètre, en particulier une hauteur d'environ 0,8 m, donnait des résultats entièrement satisfaisants.It has been found that a minimum filling height of between 0.5 and 1.2 meters, in particular a height of around 0.8 m, gives entirely satisfactory results.
On précisera en outre que, dans le cas d'une trémie ayant une dimension transversale de 3 mètres, l'ouverture 18 présentait une dimension transversale voisine de 80 centimètres.It will further be specified that, in the case of a hopper having a transverse dimension of 3 meters, the
Au cours de ces expérimentations, des essais de répandage de bétons bitumineux ultra-minces et traditionnels effectués dans ces conditions se sont avérés entièrement satisfaisants.During these experiments, spreading tests of ultra-thin and traditional bituminous concretes carried out under these conditions proved entirely satisfactory.
Il est toutefois possible pour améliorer les conditions de mise en oeuvre, d'avoir recours à une trémie 16 calorifugée.It is however possible to improve the conditions of implementation, to have recourse to a thermally insulated
Tel que cela se trouve schématisé sur le dessin annexé, le montage particulier de la trémie 16 sur le châssis permet l'application du matériau en couches ultra-minces.As shown schematically in the accompanying drawing, the particular mounting of the
A cet effet, la trémie est montée sur des bras 22 articulés sur un axe de pivotement 24, lequel est agencé en avant de ladite trémie et se trouve supporté par les roues folles 26. Dans ce cas, on assure un répandage à épaisseur constante.To this end, the hopper is mounted on
L'articulation de l'axe de pivotement transversal 24 est apte à être bloquée, et les roues folles 26 peuvent être simultanément escamotées, ceci de façon à transformer ce mode de montage de la trémie en un autre type de montage permettant d'assurer un revêtement de couches généralement appliqué en plus grande épaisseur.The articulation of the
Une vis transversale 34 assurant la répartition du matériau accumulé dans la trémie se trouve avantageusement montée dans la partie supérieure de cette dernière.A
Dans la pratique, il est possible d'avoir recours à une vis présentant des filets inversés tendant à ramener le cône d'accumulation centrale de matière en direction des parois latérales de la trémie 16.In practice, it is possible to use a screw having inverted threads tending to bring the cone of central accumulation of material towards the side walls of the
Toujours à la partie supérieure de la trémie 16, il peut également être avantageux d'agencer des palpeurs de détection du niveau minimum du matériau, ces palpeurs étant conçus pour piloter le dispositif d'alimentation de la trémie.Still at the top of the
On comprend que l'on obtient ainsi une hauteur de matériau sous la vis de répartition 34 qui est suffisamment importante pour assurer un volume utile de matériau, assurant au surplus une fonction de stockage nécessaire à la mise en oeuvre d'un travail en continu, ce qui permet d'éviter les conséquences néfastes des arrêts de la machine dûs à l'alternance des camions d'alimentation.It will be understood that a height of material is thus obtained under the
Il est clair que ce phénomène d'accumulation dans la trémie 16 permet également de remplir la fonction de densification des matériaux sous l'effet de leur propre charge.It is clear that this phenomenon of accumulation in the
La trémie 16 est en outre équipée d'un obturateur 36 qui permet de fermer la partie inférieure de la trémie 16.The
En position fermée, l'obturateur 36 coupe la veine de matériau contenu dans la trémie en contact avec le support et isole par conséquent le contenu de la trémie du support, ce qui permet d'obtenir des arrêts et des reprises à bords francs et rectilignes transversaux.In the closed position, the
Pour le redémarrage de la machine, l'obturateur 36 est escamoté par un vérin de commande hydraulique, ce qui permet à nouveau de libérer le matériau présent dans la trémie.For restarting the machine, the
Le second élément essentiel de la combinaison brevetée, est constitué par la barre vibrante portant la référence générale 38, qui est montée au voisinage immédiat du bord transversal arrière 40 de la trémie.The second essential element of the patented combination consists of the vibrating bar bearing the
Sans appuis arrière sur une plaque horizontale comme c'est le cas pour les machines existantes type finisseur.Without rear supports on a horizontal plate as is the case for existing machines type finisher.
La barre vibrante 38 est animée d'un mouvement vibratoire, soit mono- soit polydirectionnel. Les mouvements vibratoires monodirectionnels seront généralement verticaux.The vibrating
La fréquence des vibrations de la barre 38 est réglable entre des valeurs comprises entre 5 et 50 Hz.The frequency of the vibrations of the
Dans la pratique, une fréquence de vibration de l'ordre de 25 Hz, a conduit à des résultats tout-à-fait satisfaisants.In practice, a vibration frequency of the order of 25 Hz has led to entirely satisfactory results.
L'amplitude des vibrations de la barre 38 peut également être réglable, par exemple dans des plages de valeurs comprises entre 1 et 8 millimètres. Dans le cas d'une barre vibrante dans le sens vertical avec une fréquence de l'ordre de 25 Hz, une amplitude de variation de l'ordre de 4 millimètres a conduit à des résultats tout-à-fait satisfaisants dans le cas de bétons bitumineux traditionnels.The amplitude of the vibrations of the
Enfin, il est clair que la barre vibrante 38 elle-même se trouve montée sur un support qui peut être réglé en position verticale.Finally, it is clear that the vibrating
Il convient enfin d'ajouter que, de façon avantageuse, le bord arrière 40 de la trémie 16 est équipé d'un déflecteur non représenté en détail, disposé de façon avantageuse au contact de la barre vibrante 38. Cette mise en contact de ce déflecteur avec la barre 38 peut être réalisée dans la pratique à l'aide d'un moyen de rappel élastique.Finally, it should be added that, advantageously, the
D'un point de vue fonctionnel, on précisera que la vibration de la barre 38 participe au sertissage des agrégats entre eux sur la couche d'accrochage, particulièrement dans le cas de réalisation de couches très minces c'est-à-dire lorsque l'épaisseur de la couche est proche de la plus forte granulométrie du matériau mis en oeuvre.From a functional point of view, it will be specified that the vibration of the
On précisera enfin que la barre vibrante 38 est conçue avec un profil qui permet de faciliter la découpe ou le cisaillement du matériau ainsi que sa mise en place sur la couche d'accrochage.Finally, it will be noted that the vibrating
Un dispositif de réglage de bombement au centre de cette barre vibrante 38 permet d'assurer le répandage des matériaux en toit, positif ou négatif.A doming adjustment device in the center of this vibrating
Cette barre vibrante est avantageusement réalisée de façon extensible hydrauliquement ou mécaniquement au niveau de ces deux extrémités libres, ce qui autorise la réalisation de largeurs de travail variables.This vibrating bar is advantageously produced in a hydraulically or mechanically extendable manner at the level of these two free ends, which allows the realization of variable working widths.
De telles extensions télescopiques de la barre vibrante 38 permettent également de favoriser la réalisation des joints, le suivi des bordures et analogues car elle peuvent être commandées en fonction des situations particulières manuellement ou automatiquement.Such telescopic extensions of the vibrating
Pour alimenter cette partie supplémentaire en matériau de revêtement, il est possible de prévoir sur les faces latérales de la trémie 16, dans leur partie inférieure, des sortes de chattières fermées par des volets escamotables.To supply this additional part with coating material, it is possible to provide on the lateral faces of the
Lorsque les chattières sont ouvertes, de la matière additionnelle est délivrée pour assurer temporairement de plus grandes largeurs de travail.When the catteries are open, additional material is delivered to temporarily provide greater working widths.
Une autre façon de faire varier la largeur de travail, consiste en la réalisation d'une trémie télescopique.Another way to vary the working width is to make a telescopic hopper.
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9013365 | 1990-10-29 | ||
FR9013365A FR2668512B1 (en) | 1990-10-29 | 1990-10-29 | MACHINE FOR IMPLEMENTING ROAD MATERIALS. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0484220A1 true EP0484220A1 (en) | 1992-05-06 |
EP0484220B1 EP0484220B1 (en) | 1999-01-07 |
Family
ID=9401645
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91402882A Expired - Lifetime EP0484220B1 (en) | 1990-10-29 | 1991-10-28 | Asphalt paving machine |
Country Status (5)
Country | Link |
---|---|
US (1) | US5269626A (en) |
EP (1) | EP0484220B1 (en) |
AT (1) | ATE175459T1 (en) |
DE (1) | DE69130728D1 (en) |
FR (1) | FR2668512B1 (en) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5615973A (en) * | 1994-09-29 | 1997-04-01 | Astec Industries, Inc. | Paving machine with gravity feed hopper and auger mechanism |
US5533828A (en) * | 1994-09-29 | 1996-07-09 | Astec Industries, Inc. | Method and apparatus for discharging paving materials on top of distributing auger |
DE29519719U1 (en) * | 1995-12-12 | 1996-02-01 | Joseph Vögele AG, 68163 Mannheim | Device for installing covering layers |
US6444258B1 (en) | 2000-07-14 | 2002-09-03 | Phillip Rand Terry | Method of treating a pavement surface and apparatus for performing such method |
US6481925B1 (en) | 2000-11-01 | 2002-11-19 | Caterpillar Pavimg Products Inc | Paving work machine and method of transforming the same |
US6805516B2 (en) * | 2001-06-04 | 2004-10-19 | E.D. Etnyre & Co. | Roadway paving system and method including roadway paving vehicle and supply truck |
US7458747B2 (en) * | 2003-09-17 | 2008-12-02 | Cedarapids, Inc. | Frame raising multi-use paving tractor with blind mateable quick connecting tool attachments |
US20070065230A1 (en) * | 2003-09-17 | 2007-03-22 | Cedarapids, Inc. | Self Propelled Remix Machine with Conveyor |
US20050058507A1 (en) * | 2003-09-17 | 2005-03-17 | Cedarapids, Inc. | Multi-use paving tractor with tool attachments |
US7458746B1 (en) * | 2005-08-22 | 2008-12-02 | Zimmerman Harold M | Mobile asphalt production machine |
CA2582210A1 (en) * | 2006-03-22 | 2007-09-22 | Cedarapids, Inc. | Multi-stage modular road paving equipment and method of manufacture and sales |
US7798744B2 (en) * | 2007-10-15 | 2010-09-21 | Road Science, L.L.C. | Seal coat process utilizing multiple applications of asphalt binder and aggregate |
US8517629B2 (en) * | 2009-10-09 | 2013-08-27 | Dennis J. Gregerson | Pothole repair system |
US20110211909A1 (en) * | 2010-02-16 | 2011-09-01 | GEFFS Manufacturing, Inc. | Method and apparatus for aggregate-dispensing hopper conveyance and tracking |
USD742936S1 (en) | 2011-08-01 | 2015-11-10 | Joseph Vogele Ag | Control panel of road construction machine |
DE102011085241A1 (en) * | 2011-10-26 | 2013-05-02 | Hamm Ag | Spreader, in particular for spreading out grit |
USD668691S1 (en) | 2012-02-01 | 2012-10-09 | Joseph Vögele AG | Cover for an exhaust port of a road construction machine |
WO2015034497A1 (en) * | 2013-09-05 | 2015-03-12 | Volvo Construction Equipment Ab | Weighing system for a road milling machine |
US9765487B2 (en) * | 2015-09-08 | 2017-09-19 | Baldwin Paving Co., Inc. | Systems for applying roadway surface treatments, and methods of using same |
CN107780322B (en) * | 2017-10-13 | 2018-12-14 | 绍兴杭铭饰品有限公司 | A kind of road construction tamping unit |
EP3498915B1 (en) | 2017-12-13 | 2020-10-14 | Joseph Vögele AG | Road finisher with raisable chassis |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2109020A (en) * | 1934-09-21 | 1938-02-22 | Clyde G Abernathy | Road paver |
US3614916A (en) * | 1970-04-13 | 1971-10-26 | Jewell R Benson | Compacting apparatus for finishing hot mix pavement |
GB1400617A (en) * | 1971-07-14 | 1975-07-16 | Trautmann E | Repairing of roads surfaces |
EP0370135A1 (en) * | 1988-11-25 | 1990-05-30 | Vat Baustofftechnik Gmbh | Apparatus for applying binder and aggregate in road construction |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE338581B (en) * | 1968-03-29 | 1971-09-13 | T Danielsson | |
US4302127A (en) * | 1979-11-13 | 1981-11-24 | Harry Hodson | Applicator and distributor assembly |
US4310293A (en) * | 1980-03-31 | 1982-01-12 | Eggleton Richard C | Apparatus for moulding concrete |
US4765772A (en) * | 1987-05-29 | 1988-08-23 | Angelo Benedetti, Inc. | Method and apparatus for filling voids in recycled asphalt |
-
1990
- 1990-10-29 FR FR9013365A patent/FR2668512B1/en not_active Expired - Fee Related
-
1991
- 1991-10-28 AT AT91402882T patent/ATE175459T1/en not_active IP Right Cessation
- 1991-10-28 DE DE69130728T patent/DE69130728D1/en not_active Expired - Lifetime
- 1991-10-28 EP EP91402882A patent/EP0484220B1/en not_active Expired - Lifetime
- 1991-10-29 US US07/783,679 patent/US5269626A/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2109020A (en) * | 1934-09-21 | 1938-02-22 | Clyde G Abernathy | Road paver |
US3614916A (en) * | 1970-04-13 | 1971-10-26 | Jewell R Benson | Compacting apparatus for finishing hot mix pavement |
GB1400617A (en) * | 1971-07-14 | 1975-07-16 | Trautmann E | Repairing of roads surfaces |
EP0370135A1 (en) * | 1988-11-25 | 1990-05-30 | Vat Baustofftechnik Gmbh | Apparatus for applying binder and aggregate in road construction |
Also Published As
Publication number | Publication date |
---|---|
DE69130728D1 (en) | 1999-02-18 |
FR2668512A1 (en) | 1992-04-30 |
US5269626A (en) | 1993-12-14 |
ATE175459T1 (en) | 1999-01-15 |
EP0484220B1 (en) | 1999-01-07 |
FR2668512B1 (en) | 1993-04-09 |
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