EP1435412A1 - Equipment for the spreading of binder and aggregate on a road surface - Google Patents

Equipment for the spreading of binder and aggregate on a road surface Download PDF

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Publication number
EP1435412A1
EP1435412A1 EP03293033A EP03293033A EP1435412A1 EP 1435412 A1 EP1435412 A1 EP 1435412A1 EP 03293033 A EP03293033 A EP 03293033A EP 03293033 A EP03293033 A EP 03293033A EP 1435412 A1 EP1435412 A1 EP 1435412A1
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EP
European Patent Office
Prior art keywords
gravel
assembly
hopper
binder
spreading
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.)
Withdrawn
Application number
EP03293033A
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German (de)
French (fr)
Inventor
Guy Marconnet
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.)
Famaro SA
Original Assignee
Famaro SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Famaro SA filed Critical Famaro SA
Publication of EP1435412A1 publication Critical patent/EP1435412A1/en
Withdrawn legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/20Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C19/201Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders with driven loosening, discharging or spreading parts, e.g. power-driven, drive derived from road-wheels
    • E01C19/202Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders with driven loosening, discharging or spreading parts, e.g. power-driven, drive derived from road-wheels solely rotating, e.g. discharging and spreading drums
    • E01C19/2025Throwers with substantially horizontal axis, e.g. drums or brushes rotated to fling the material at the surface
    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/21Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading ; for filling grooves and gritting the filling

Definitions

  • the invention relates to a device for spreading liquid binder and gravel on a road surface.
  • a gravel spreader for example a variable width spreader comprising hatches controlled independently at opening and at closure and, for example a flap and a flap to improve the distribution of gravel on the road surface.
  • a multi-jet binder ramp which can be fixed, for example, just in front from the gravel maker.
  • the bituminous binder ramp is adjusted so that it pours bitumen on the offset road surface part laterally with respect to the road vehicle spreading on the surface road. This adjustment of the binder ramp makes it possible to pour the gravel and the bituminous binder on the same area of road surface.
  • the tipper of the dump truck must be in the raised position and the tilting of the bucket increases as the bucket empties into the gravel spreader.
  • the height of the road vehicle above the ground which is a function of the bucket lifting height can be a serious handicap when desired pass under a bridge or wires or cables such as telephone wires or electric.
  • the flow rate of the gravel spreader is a function of the angle of inclination. of the tipper body and must be adjusted by calibration according to the angle tilting angle. This setting can be made by adjusting the opening height of the gravel trap doors.
  • the setting of the gravel spreader by calibration is only approximate and, for obtain a flow of gravel on the road surface as constant as possible, an operator must compensate for the emptying effects of the bucket as well as the effects due to the slope of the road on the gravel flow, visually. It is therefore a completely empirical adjustment.
  • Gravel spreading devices were also used and bitumen or bi-spreaders which include at least one buffer hopper associated with the gravel spreader and for example two telescopic buffer hoppers.
  • the buffer hopper (s) must be fed by the tipper of a dump truck.
  • the spreading device is therefore not not, in this case, autonomous and the drawbacks recalled above of known devices using a dump truck are found at least partially in such a spreading device.
  • bi-spreader device which includes a storage hopper which can be re-supplied with gravel by a belt conveyor mounted on the bi-spreader, so that it can be placed in the service position to re-supply the storage hopper or retracted position inactive.
  • a bi-spreader also includes a ramp with independent binder of the gravel spreader and comprising two beams telescopic, so as to allow transverse adjustments to adjust the width of spreading of bitumen to the width of spreading of gravel.
  • bi-spreader devices to ensure simple spreading of gravel and bitumen on the same surface area and easily adjust the position of a spreading area by relation to the rolling elements of the road vehicle, for example to perform spreading operations on a part close to a border of a road or roadway or on adjacent areas of the road, by passes successive in one direction and in the other of the bi-diffuser.
  • the object of the invention is therefore to propose a device for spreading liquid binder and gravel on a road surface constituted by a machine road comprising a chassis and at least one hopper, a gravel spreader and a binder ramp, mounted on the chassis at the rear of the road vehicle, this device avoiding the inconvenience of using a light truck tipping body and a ramp with cross-adjustable binder.
  • the spreading device comprises a tank hopper for the storage of gravel and an assembly comprising a buffer hopper arranged with an inlet opening below a opening of the tank hopper, a gravel spreader with a metering roller attached to an outlet part of the buffer hopper and the binder ramp attached buffer hopper and gravel spreader, mounted at the rear of the chassis of the road vehicle.
  • Figure 1 is a side elevational view in partial section of the whole device.
  • Figure 2 is a rear view of the following spreading device the invention.
  • Figure 3 is a side elevational view in section of the part rear of the device shown in Figure 1, on a larger scale.
  • Figure 4 is a schematic rear view of the device showing adjusting the transverse position of the spreading area on a surface road.
  • FIG 1 there is shown a spreading device according to the invention generally designated by the reference 1.
  • the spreading device is made in the form of a truck comprising an engine and a cabin 2 located at the front of the vehicle, a chassis 4 and a front wheel set 3a and a rear wheel set 3b for the bearing of the road vehicle 1 on a road surface 5 on which a spreading of gravel and bitumen.
  • a tank 6 of bituminous binder liquid comprising means 6a for pumping and distribution bituminous binder for the supply of the binder ramp 7 of the device spreading.
  • a storage hopper or tank hopper 8 On the rear part of the chassis 4 are mounted a storage hopper or tank hopper 8, a gravel spreader 10 associated with a buffer hopper 9 and the bituminous binder ramp 7.
  • the gravel spreader 10 which extends in the transverse direction of the road vehicle is a wide-gravel variable comprising adjacent hatches 11 arranged successively in the transverse direction, controlled at opening and closing, independently, by jacks 12.
  • the gravel spreader 10 comprises moreover a metering roller 13 ensuring uniform distribution and a constant rate of spreading of gravel on the road surface 5 on which the road vehicle moves.
  • the gravel spreader 10 may further include a flap and a counter flap improving the distribution of gravel on the surface road 5.
  • the hopper of storage 8 has inclined walls such as 8a to ensure a regular flow rate of gravel contained in the hopper, towards an outlet opening 8b of the hopper disposed at its lower part.
  • the spreading device 1 comprises an assembly 14 fixed to the rear of the chassis 4 of the device 1, below the tank hopper 8 which comprises, in particular, the buffer hopper 9, the gravel spreader 10 and the spreading ramp of bituminous binder 7.
  • the assembly 14 comprises a frame 15 constituted by beams which ensures rigid rigid mounting of the different parts constituting the assembly 14.
  • the rear part of the chassis 4 of the spreading device 1 carries the assembly 14 which is suspended from the structure of the tank hopper 8 which rests itself on the rear part of the chassis 4.
  • two suspension struts 16 are fixed in a vertical arrangement at the rear of the tank hopper 8 and bear, each via a respective horizontal shaft 17 'fixed at its lower end, a respective roller 17 mounted to rotate about a horizontal axis and having a groove in which is engaged a horizontal beam 15a with a square section of the frame 15 of the assembly 14.
  • two vertical legs such as 18 are fixed to the wall front of the tank hopper 8 and each carry at their lower end, a respective shaft 19 'on which a roller 19 is mounted rotating around a horizontal axis.
  • a horizontal beam 15b with a square section of the frame 15 of the assembly 14 rests on the rolling surface of the rollers 19.
  • the assembly 14 comprising the frame 15, the buffer hopper 9, the gravel spreader 10 and the binder ramp 7 can be moved in the transverse direction relative to the tank hopper 8 and to the chassis 4 of the spreading device 1.
  • Movements in transverse direction and position adjustment of the assembly 14 are provided by a hydraulic cylinder 20 whose body is fixed to the rear of the tank hopper 8 and the rod of which is connected to the frame 15, for movement and adjustment in the transverse direction of the position of the set 14.
  • the buffer hopper 9 is fixed, at its upper part, to beams horizontal 15b and 15c of the frame 15 extending in the transverse direction of the spreading device.
  • the spreading boom 7 has supporting elements such as 7a of vertical direction fixed, at their part upper, on the buffer hopper 9, itself fixed on the beams such as 15b and 15c of the frame 15.
  • the buffer hopper 9 has, at its upper end, an opening inlet 9a vertical to the outlet opening 8b of the tank hopper which is partially engaged inside the upper end of the buffer hopper 9.
  • the inlet opening 9a of the buffer hopper 9 has a dimension, especially in the transverse direction, sufficient to allow movements of the buffer hopper 9 relative to the lower outlet part of the tank hopper 8, during movements of the assembly 14 in the transverse direction, as will be described later.
  • the gravel spreader 10 is fixed to a wall of the directed hopper 9 towards the rear of the spreading device.
  • Each of the cylinders 12 of the gravel spreader allows to open, when opening or closing, a hatch 11 closing a section of an outlet opening 9b of the buffer hopper 9.
  • the dosing roller 13 of the gravel spreader is rotatably mounted around an axis horizontal direction transverse to the lower part of the gravel spreader and extends substantially over the entire length, in the transverse direction, from the outlet opening 9b of the buffer hopper 9 along which are placed, in successive adjacent arrangements in the transverse direction, the shutter hatches 11.
  • the metering roller 13 is driven by an assembly motor 21 which makes it possible to adjust the flow rate of gravel supplied by the gravel spreader, at a value set independently of the filling level hoppers 8 and 9 and the slope of the road surface 5. Therefore, can continuously fine-tune the flow of loose gravel on the road surface 5 and ensuring the control of the spreading process fully automated.
  • the metering roller 13 of the gravel spreader (and possibly the flap and adjusting flap of the gravel distribution) as well as the spreading ramp 7 are placed at the lower part of the assembly 14, at a low height h above the road surface 5, this height h possibly being less than 300 mm.
  • the bituminous binder ramp 7 extends in the transverse direction of the spreading device 1, along the entire length of the gravel spreader 10 and of the buffer hopper 9 in the transverse direction.
  • the ramp to binder 7 is integral with the gravel spreader 10 and the buffer hopper 9. Due to the low drop height of the gravel on the road surface 5, the area bituminous binder spreading by ramp 7 and the spreading area of gravel by the gravel spreader 10 overlap perfectly in the direction transverse of the road surface 5, without having to adjust cross section of the binder ramp 7.
  • the device according to the invention therefore has a simple structure and the operation of the spreading device does not require any adjustment of position in the transverse direction of the binder ramp 7, relative to the chip spreader. Operation is independent of the slope of the surface road 5 which may have a slope in the transverse direction.
  • the assembly 14 comprising in particular the gravel spreader 10 and the binder ramp 7 can be moved transversely on either side of a neutral position represented in solid lines in FIG. 4, between a position 14 ′ in which the assembly 14 is offset as far as possible to the right and, a position 14 "in which the assembly 14 is offset as far as possible to the left.
  • the position of the assembly 14 can be adjusted in a way any between these two extreme positions thanks to the adjustment cylinder 20 mounted in a transverse arrangement.
  • Maximum offset to the right and maximum offset to the left of assembly 14, from its neutral position in which assembly 14 is centered on the median longitudinal axis of the spreading device 1, can have different amplitudes.
  • the maximum offset to the right of the assembly 14 may be greater at maximum offset to the left.
  • the assembly 14 can be arranged so shifted to the right, to make a covering strip extending in the transverse direction along the entire length of an area 5a.
  • a spreading layer is produced which extends along a zone 5b, in the transverse direction, beyond the left wheel set 3b spreading device towards the middle of the roadway.
  • the assembly 14 offset to the left can make a covering layer of the end part of the layer made during the first pass, offset to the left towards the middle of the roadway, without having to drive the left wheel train 3 of the device spreading on the end zone of the coating layer produced during the first pass, the left wheel sets of the spreading device are moving only on the original surface of the roadway. In this way, avoiding deterioration of the coating layer in the subject part covering and running the wheel sets on bituminous binder fresh.
  • the device according to the invention of simple structure therefore makes it possible to facilitate the adjustment of the spreading operation to make it insensitive to conditions such as hoppers filling state and surface slope road on which the spreading is carried out.
  • the spreading process is thus easily automated.
  • the device makes it possible to easily carry out work of pavement edges or in two successive adjacent passes, when the assembly comprising the gravel spreader and the binder ramp can be moved and adjusted in position in the transverse direction.
  • the quality of the overlapping parts of two passes successive coating is improved by the fact that the wheel sets of the spreading device do not have to circulate on the first coating layer performed during a first pass.
  • the invention applies to devices used for numerous works coating using binders of very different natures.

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

Abstract

The device has an assembly with a hopper-plug having an inlet opening below an outlet opening of a hopper tank storing gravels. A spreader (10) has a dosing roller integrated to the plug outlet, and a ramp integral to the plug and spreader. The ramp and the spreader are mounted to the back of a chassis (4) of a road-making machine. The assembly is adjusted in position in the transverse direction of the machine.

Description

L'invention concerne un dispositif d'épandage de liant liquide et de gravillons sur une surface routière.The invention relates to a device for spreading liquid binder and gravel on a road surface.

On connaít des dispositifs d'épandage de liant et de gravillons constitués par un camion à benne basculante dont la partie arrière de la benne porte un gravillonneur, par exemple un gravillonneur à largeur variable comportant des trappes commandées de manière indépendante à l'ouverture et à la fermeture et, par exemple une bavette et une contre-bavette pour améliorer la répartition des gravillons sur le sol routier. Lorsque ces dispositifs sont utilisés pour effectuer l'épandage de liant bitumineux et de gravillons, par exemple pour la réfection d'une surface routière, ils comportent une rampe à liant à jets multiples qui peut être fixée, par exemple, juste à l'avant du gravillonneur.There are known devices for spreading binder and gravel formed by a dump truck with the rear part of the dump body carries a gravel spreader, for example a variable width spreader comprising hatches controlled independently at opening and at closure and, for example a flap and a flap to improve the distribution of gravel on the road surface. When these devices are used to spread bituminous binder and gravel, for example for the repair of a road surface, they include a multi-jet binder ramp which can be fixed, for example, just in front from the gravel maker.

Du fait de la hauteur de chute des gravillons qui peut être importante, il est nécessaire d'utiliser une rampe à liant dont la largeur d'épandage peut être réglée, dans la direction transversale de l'engin routier, pour compenser les effets de la gravité, lorsque l'engin routier effectue une réparation sur une surface routière présentant un virage et/ou une partie en dévers, de sorte que les gravillons sont déversés dans une zone située latéralement vers l'extérieur de l'engin routier. Dans ce cas, on ajuste la rampe à liant bitumineux pour qu'elle déverse du bitume sur la partie de surface routière décalée latéralement par rapport à l'engin routier effectuant l'épandage sur la surface routière. Cet ajustement de la rampe à liant permet de déverser les gravillons et le liant bitumineux sur la même étendue de surface routière.Because of the falling height of the gravel which can be significant, it is necessary to use a binder ramp whose spreading width can be adjusted, in the transverse direction of the road vehicle, to compensate the effects of gravity, when the road vehicle makes a repair on a road surface with a bend and / or a slope, so that the gravel is dumped in an area located laterally towards the exterior of the road vehicle. In this case, the bituminous binder ramp is adjusted so that it pours bitumen on the offset road surface part laterally with respect to the road vehicle spreading on the surface road. This adjustment of the binder ramp makes it possible to pour the gravel and the bituminous binder on the same area of road surface.

Lors du fonctionnement de l'engin routier, la benne du camion-benne doit être en position levée et le basculement de la benne augmente à mesure que la benne se vide dans le gravillonneur.During the operation of the road vehicle, the tipper of the dump truck must be in the raised position and the tilting of the bucket increases as the bucket empties into the gravel spreader.

La hauteur de l'engin routier au-dessus du sol qui est fonction de la hauteur de levage de la benne peut être un handicap sérieux lorsqu'on désire passer sous un pont ou des fils ou câbles tels que des fils téléphoniques ou électriques.The height of the road vehicle above the ground which is a function of the bucket lifting height can be a serious handicap when desired pass under a bridge or wires or cables such as telephone wires or electric.

En outre, le débit du gravillonneur est fonction de l'angle d'inclinaison de la benne basculante et doit être réglé par étalonnage en fonction de l'angle d'inclinaison de la benne. Ce réglage peut être effectué par ajustement de la hauteur d'ouverture des trappes du gravillonneur. Cependant, le réglage de débit du gravillonneur par étalonnage n'est qu'approximatif et, pour obtenir un débit de gravillons sur la surface routière le plus constant possible, il est nécessaire qu'un opérateur compense les effets de vidange de la benne ainsi que les effets dus à la pente de la route sur le débit de gravillons, de manière visuelle. Il s'agit donc d'un réglage totalement empirique.In addition, the flow rate of the gravel spreader is a function of the angle of inclination. of the tipper body and must be adjusted by calibration according to the angle tilting angle. This setting can be made by adjusting the opening height of the gravel trap doors. However, the setting of the gravel spreader by calibration is only approximate and, for obtain a flow of gravel on the road surface as constant as possible, an operator must compensate for the emptying effects of the bucket as well as the effects due to the slope of the road on the gravel flow, visually. It is therefore a completely empirical adjustment.

On a utilisé également des dispositifs de répandage de gravillons et de bitume ou bi-répandeurs qui comportent au moins une trémie tampon associée au gravillonneur et par exemple deux trémies-tampons télescopiques. Dans ce cas, la ou les trémies-tampons doivent être alimentées par la benne basculante d'un camion-benne. Le dispositif de répandage n'est donc pas, dans ce cas, autonome et les inconvénients rappelés ci-dessus des dispositifs connus utilisant un camion-benne se retrouvent au moins partiellement dans un tel dispositif de répandage.Gravel spreading devices were also used and bitumen or bi-spreaders which include at least one buffer hopper associated with the gravel spreader and for example two telescopic buffer hoppers. In this case, the buffer hopper (s) must be fed by the tipper of a dump truck. The spreading device is therefore not not, in this case, autonomous and the drawbacks recalled above of known devices using a dump truck are found at least partially in such a spreading device.

On a également utilisé un dispositif bi-répandeur qui comporte une trémie de stockage qui peut être ré-alimentée en gravillons par un convoyeur à bande monté sur le bi-répandeur, de manière à pouvoir être placé en position de service pour ré-alimenter la trémie de stockage ou en position rétractée inactive. Un tel bi-répandeur comporte également une rampe à liant indépendante du gravillonneur et comprenant deux poutres télescopiques, de manière à permettre des réglages transversaux pour ajuster la largeur d'épandage de bitume à la largeur d'épandage de gravillons.We also used a bi-spreader device which includes a storage hopper which can be re-supplied with gravel by a belt conveyor mounted on the bi-spreader, so that it can be placed in the service position to re-supply the storage hopper or retracted position inactive. Such a bi-spreader also includes a ramp with independent binder of the gravel spreader and comprising two beams telescopic, so as to allow transverse adjustments to adjust the width of spreading of bitumen to the width of spreading of gravel.

De tels bi-répandeurs qui ont une structure et un fonctionnement relativement complexes présentent également certains des inconvénients mentionnés plus haut.Such bi-spreaders which have a relatively structure and functioning complexes also have some of the disadvantages mentioned upper.

De manière générale, on ne connaissait pas jusqu'ici, dans l'état de la technique, de dispositifs bi-répandeurs permettant d'assurer de manière simple un épandage de gravillons et de bitume sur une même zone de surface routière et de régler facilement la position d'une zone d'épandage par rapport aux éléments de roulement de l'engin routier, par exemple pour effectuer des opérations d'épandage sur une partie proche d'une bordure d'une route ou chaussée ou sur des zones adjacentes de la route, par passes successives dans un sens et dans l'autre du bi-répandeur. In general, it was not known until now, in the state of technique, bi-spreader devices to ensure simple spreading of gravel and bitumen on the same surface area and easily adjust the position of a spreading area by relation to the rolling elements of the road vehicle, for example to perform spreading operations on a part close to a border of a road or roadway or on adjacent areas of the road, by passes successive in one direction and in the other of the bi-diffuser.

Le but de l'invention est donc de proposer un dispositif d'épandage de liant liquide et de gravillons sur une surface routière constitué par un engin routier comportant un châssis et au moins une trémie, un gravillonneur et une rampe à liant, montés sur le châssis à l'arrière de l'engin routier, ce dispositif permettant d'éviter les inconvénients liés à l'utilisation d'un camion à benne basculante et d'une rampe à liant réglable transversalement.The object of the invention is therefore to propose a device for spreading liquid binder and gravel on a road surface constituted by a machine road comprising a chassis and at least one hopper, a gravel spreader and a binder ramp, mounted on the chassis at the rear of the road vehicle, this device avoiding the inconvenience of using a light truck tipping body and a ramp with cross-adjustable binder.

Dans ce but, le dispositif d'épandage suivant l'invention comporte une trémie réservoir pour le stockage de gravillons et un ensemble comportant une trémie-tampon disposée avec une ouverture d'entrée en-dessous d'une ouverture de sortie de la trémie réservoir, un gravillonneur à rouleau doseur solidaire d'une partie de sortie de la trémie-tampon et la rampe à liant solidaire de la trémie-tampon et du gravillonneur, montés à l'arrière du châssis de l'engin routier.For this purpose, the spreading device according to the invention comprises a tank hopper for the storage of gravel and an assembly comprising a buffer hopper arranged with an inlet opening below a opening of the tank hopper, a gravel spreader with a metering roller attached to an outlet part of the buffer hopper and the binder ramp attached buffer hopper and gravel spreader, mounted at the rear of the chassis of the road vehicle.

De préférence :

  • l'ensemble est monté mobile dans une direction transversale sur le châssis de l'engin routier et réglable en position, entre une position de déport maximal à droite et une position de déport maximal à gauche, par rapport à une position neutre dans laquelle l'ensemble est centré sur un axe longitudinal médian de l'engin routier.
  • l'ensemble comporte un bâti constitué de poutrelles sur lequel est fixée la trémie-tampon, le gravillonneur et la rampe à liant étant fixés de manière solidaire de la trémie-tampon, et l'engin routier comporte des jambes de suspension portant, par l'intermédiaire d'arbres horizontaux, des galets respectifs à axes horizontaux sur lesquels repose le bâti de l'ensemble, par l'intermédiaire de poutrelles horizontales.
  • il comporte un vérin dans une disposition transversale dont le corps est relié à la trémie réservoir fixée sur le châssis de l'engin routier et dont la tige mobile est reliée au bâti de l'ensemble.
  • la rampe à liant et le rouleau doseur du gravillonneur sont montés à la partie inférieure de l'ensemble, à une hauteur réduite, par exemple inférieure à 300 mm, au-dessus de la surface routière sur laquelle se déplace l'engin routier.
Preferably:
  • the assembly is mounted movable in a transverse direction on the chassis of the road vehicle and adjustable in position, between a position of maximum offset to the right and a position of maximum offset to the left, relative to a neutral position in which the together is centered on a median longitudinal axis of the road vehicle.
  • the assembly comprises a frame made up of beams on which the buffer hopper is fixed, the gravel spreader and the binder ramp being fixed integral with the buffer hopper, and the road vehicle comprises suspension struts carrying, by the 'intermediate horizontal shafts, respective rollers with horizontal axes on which the frame of the assembly rests, by means of horizontal beams.
  • it comprises a jack in a transverse arrangement, the body of which is connected to the tank hopper fixed to the chassis of the road vehicle and the movable rod of which is connected to the frame of the assembly.
  • the binder ramp and the gravel dosing roller are mounted at the lower part of the assembly, at a reduced height, for example less than 300 mm, above the road surface on which the road vehicle moves.

Afin de bien faire comprendre l'invention, on va décrire, à titre d'exemple, en se référant aux figures jointes en annexe, un mode de réalisation d'un dispositif d'épandage de liant liquide et de gravillons suivant l'invention.In order to clearly understand the invention, we will describe, by way of example, with reference to the attached figures, an embodiment a device for spreading liquid binder and gravel according to the invention.

La figure 1 est une vue en élévation latérale et en coupe partielle de l'ensemble du dispositif.Figure 1 is a side elevational view in partial section of the whole device.

La figure 2 est une vue de derrière du dispositif d'épandage suivant l'invention.Figure 2 is a rear view of the following spreading device the invention.

La figure 3 est une vue en élévation latérale et en coupe de la partie arrière du dispositif représenté sur la figure 1, à plus grande échelle.Figure 3 is a side elevational view in section of the part rear of the device shown in Figure 1, on a larger scale.

La figure 4 est une vue schématique de derrière du dispositif montrant le réglage de la position transversale de la zone d'épandage sur une surface routière.Figure 4 is a schematic rear view of the device showing adjusting the transverse position of the spreading area on a surface road.

Sur la figure 1, on a représenté un dispositif d'épandage suivant l'invention désigné de manière générale par le repère 1.In Figure 1, there is shown a spreading device according to the invention generally designated by the reference 1.

Le dispositif d'épandage est réalisé sous la forme d'un camion comportant un moteur et une cabine 2 situés à l'avant du véhicule, un châssis 4 et un train de roues avant 3a et un train de roues arrière 3b pour le roulement de l'engin routier 1 sur une surface routière 5 sur laquelle on réalise un épandage de gravillons et de bitume.The spreading device is made in the form of a truck comprising an engine and a cabin 2 located at the front of the vehicle, a chassis 4 and a front wheel set 3a and a rear wheel set 3b for the bearing of the road vehicle 1 on a road surface 5 on which a spreading of gravel and bitumen.

Sur la partie avant du châssis 4 est monté un réservoir 6 de liant bitumineux liquide comportant des moyens 6a de pompage et de distribution de liant bitumineux pour l'alimentation de la rampe à liant 7 du dispositif d'épandage.On the front part of the chassis 4 is mounted a tank 6 of bituminous binder liquid comprising means 6a for pumping and distribution bituminous binder for the supply of the binder ramp 7 of the device spreading.

Sur la partie arrière du châssis 4 sont montés une trémie de stockage ou trémie réservoir 8, un gravillonneur 10 associé à une trémie-tampon 9 et la rampe à liant bitumineux 7.On the rear part of the chassis 4 are mounted a storage hopper or tank hopper 8, a gravel spreader 10 associated with a buffer hopper 9 and the bituminous binder ramp 7.

Comme il est visible sur la figure 2, le gravillonneur 10 qui s'étend suivant la direction transversale de l'engin routier est un gravillonneur à largeur variable comportant des trappes adjacentes 11 disposées successivement dans la direction transversale, commandées à l'ouverture et à la fermeture, de manière indépendante, par des vérins 12. Le gravillonneur 10 comporte de plus un rouleau doseur 13 permettant d'assurer une répartition homogène et un débit constant de répandage de gravillons sur la surface routière 5 sur laquelle se déplace l'engin routier.As can be seen in FIG. 2, the gravel spreader 10 which extends in the transverse direction of the road vehicle is a wide-gravel variable comprising adjacent hatches 11 arranged successively in the transverse direction, controlled at opening and closing, independently, by jacks 12. The gravel spreader 10 comprises moreover a metering roller 13 ensuring uniform distribution and a constant rate of spreading of gravel on the road surface 5 on which the road vehicle moves.

Le gravillonneur 10 peut comporter de plus une bavette et une contre-bavette permettant d'améliorer la répartition des gravillons sur la surface routière 5.The gravel spreader 10 may further include a flap and a counter flap improving the distribution of gravel on the surface road 5.

Comme il est visible en particulier sur les figures 1 et 3, la trémie de stockage 8 comporte des parois inclinées telles que 8a permettant d'assurer un débit d'écoulement régulier de gravillons contenus dans la trémie, vers une ouverture de sortie 8b de la trémie disposée à sa partie inférieure.As can be seen in particular in FIGS. 1 and 3, the hopper of storage 8 has inclined walls such as 8a to ensure a regular flow rate of gravel contained in the hopper, towards an outlet opening 8b of the hopper disposed at its lower part.

La pente des parois de la trémie réservoir 8 telles que la paroi 8a est choisie de manière que l'écoulement de gravillons à la sortie 8b de la trémie 8 soit pratiquement indépendant de la pente de la surface routière 5 sur laquelle se déplace le dispositif d'épandage 1.The slope of the walls of the tank hopper 8 such that the wall 8a is chosen so that the flow of gravel at the outlet 8b of the hopper 8 is practically independent of the slope of the road surface 5 on which the spreading device 1 moves.

Selon l'invention, comme représenté en particulier sur la figure 3, le dispositif d'épandage 1 comporte un ensemble 14 fixé à l'arrière du châssis 4 du dispositif 1, en-dessous de la trémie réservoir 8 qui comporte, en particulier, la trémie-tampon 9, le gravillonneur 10 et la rampe d'épandage de liant bitumineux 7. L'ensemble 14 comporte un bâti 15 constitué par des poutrelles qui permet d'assurer un montage solidaire rigide des différentes parties constituant l'ensemble 14.According to the invention, as shown in particular in Figure 3, the spreading device 1 comprises an assembly 14 fixed to the rear of the chassis 4 of the device 1, below the tank hopper 8 which comprises, in particular, the buffer hopper 9, the gravel spreader 10 and the spreading ramp of bituminous binder 7. The assembly 14 comprises a frame 15 constituted by beams which ensures rigid rigid mounting of the different parts constituting the assembly 14.

La partie arrière du châssis 4 du dispositif d'épandage 1 porte l'ensemble 14 qui est suspendu à la structure de la trémie réservoir 8 qui repose elle-même sur la partie arrière du châssis 4.The rear part of the chassis 4 of the spreading device 1 carries the assembly 14 which is suspended from the structure of the tank hopper 8 which rests itself on the rear part of the chassis 4.

Comme il est visible sur les figures 2 et 3, deux jambes de suspension 16 sont fixées dans une disposition verticale à l'arrière de la trémie réservoir 8 et portent, chacune par l'intermédiaire d'un arbre respectif horizontal 17' fixé à son extrémité inférieure, un galet respectif 17 monté tournant autour d'un axe horizontal et comportant une gorge dans laquelle est engagée une poutrelle horizontale 15a à section carrée du bâti 15 de l'ensemble 14. De même, deux jambes verticales telles que 18 sont fixées sur la paroi avant de la trémie réservoir 8 et portent, chacune à leur extrémité inférieure, un arbre respectif 19' sur lequel un galet 19 est monté tournant autour d'un axe horizontal. Une poutrelle horizontale 15b à section carrée du bâti 15 de l'ensemble 14 repose sur la surface de roulement des galets 19.As can be seen in Figures 2 and 3, two suspension struts 16 are fixed in a vertical arrangement at the rear of the tank hopper 8 and bear, each via a respective horizontal shaft 17 'fixed at its lower end, a respective roller 17 mounted to rotate about a horizontal axis and having a groove in which is engaged a horizontal beam 15a with a square section of the frame 15 of the assembly 14. Similarly, two vertical legs such as 18 are fixed to the wall front of the tank hopper 8 and each carry at their lower end, a respective shaft 19 'on which a roller 19 is mounted rotating around a horizontal axis. A horizontal beam 15b with a square section of the frame 15 of the assembly 14 rests on the rolling surface of the rollers 19.

De cette manière, l'ensemble 14 comportant le bâti 15, la trémie-tampon 9, le gravillonneur 10 et la rampe à liant 7 peut être déplacé dans la direction transversale par rapport à la trémie réservoir 8 et au châssis 4 du dispositif d'épandage 1.In this way, the assembly 14 comprising the frame 15, the buffer hopper 9, the gravel spreader 10 and the binder ramp 7 can be moved in the transverse direction relative to the tank hopper 8 and to the chassis 4 of the spreading device 1.

Les déplacements dans la direction transversale et le réglage de position de l'ensemble 14 sont assurés par un vérin hydraulique 20 dont le corps est fixé à l'arrière de la trémie réservoir 8 et dont la tige est reliée au bâti 15, pour le déplacement et le réglage dans la direction transversale de la position de l'ensemble 14.Movements in transverse direction and position adjustment of the assembly 14 are provided by a hydraulic cylinder 20 whose body is fixed to the rear of the tank hopper 8 and the rod of which is connected to the frame 15, for movement and adjustment in the transverse direction of the position of the set 14.

La trémie-tampon 9 est fixée, à sa partie supérieure, sur des poutrelles horizontales 15b et 15c du bâti 15 s'étendant suivant la direction transversale du dispositif d'épandage. La rampe d'épandage 7 comporte des éléments de support tels que 7a de direction verticale fixés, à leur partie supérieure, sur la trémie-tampon 9, elle-même fixée sur les poutrelles telles que 15b et 15c du bâti 15.The buffer hopper 9 is fixed, at its upper part, to beams horizontal 15b and 15c of the frame 15 extending in the transverse direction of the spreading device. The spreading boom 7 has supporting elements such as 7a of vertical direction fixed, at their part upper, on the buffer hopper 9, itself fixed on the beams such as 15b and 15c of the frame 15.

La trémie-tampon 9 comporte, à son extrémité supérieure, une ouverture d'entrée 9a à la verticale de l'ouverture de sortie 8b de la trémie réservoir qui est partiellement engagée à l'intérieur de l'extrémité supérieure de la trémie-tampon 9.The buffer hopper 9 has, at its upper end, an opening inlet 9a vertical to the outlet opening 8b of the tank hopper which is partially engaged inside the upper end of the buffer hopper 9.

L'ouverture d'entrée 9a de la trémie-tampon 9 présente une dimension, en particulier dans la direction transversale, suffisante pour permettre des débattements de la trémie-tampon 9 par rapport à la partie de sortie inférieure de la trémie réservoir 8, lors de déplacements de l'ensemble 14 dans la direction transversale, comme il sera décrit par la suite.The inlet opening 9a of the buffer hopper 9 has a dimension, especially in the transverse direction, sufficient to allow movements of the buffer hopper 9 relative to the lower outlet part of the tank hopper 8, during movements of the assembly 14 in the transverse direction, as will be described later.

Le gravillonneur 10 est fixé sur une paroi de la trémie-tampon 9 dirigée vers l'arrière du dispositif d'épandage. Chacun des vérins 12 du gravillonneur permet d'actionner, à l'ouverture ou à la fermeture, une trappe 11 d'obturation d'une section d'une ouverture de sortie 9b de la trémie-tampon 9. Le rouleau doseur 13 du gravillonneur est monté rotatif autour d'un axe horizontal de direction transversale à la partie inférieure du gravillonneur et s'étend sensiblement sur toute la longueur, dans la direction transversale, de l'ouverture de sortie 9b de la trémie-tampon 9 suivant laquelle sont placées, dans des dispositions adjacentes successives dans la direction transversale, les trappes d'obturation 11. Le rouleau doseur 13 est entraíné par un ensemble moteur 21 qui permet de régler le débit de gravillons fournis par le gravillonneur, à une valeur réglée indépendamment du niveau de remplissage des trémies 8 et 9 et de la pente de la surface routière 5. De ce fait, on peut effectuer en permanence un réglage précis du débit de gravillons répandus sur la surface routière 5 et assurer une conduite du procédé d'épandage de manière totalement automatisée.The gravel spreader 10 is fixed to a wall of the directed hopper 9 towards the rear of the spreading device. Each of the cylinders 12 of the gravel spreader allows to open, when opening or closing, a hatch 11 closing a section of an outlet opening 9b of the buffer hopper 9. The dosing roller 13 of the gravel spreader is rotatably mounted around an axis horizontal direction transverse to the lower part of the gravel spreader and extends substantially over the entire length, in the transverse direction, from the outlet opening 9b of the buffer hopper 9 along which are placed, in successive adjacent arrangements in the transverse direction, the shutter hatches 11. The metering roller 13 is driven by an assembly motor 21 which makes it possible to adjust the flow rate of gravel supplied by the gravel spreader, at a value set independently of the filling level hoppers 8 and 9 and the slope of the road surface 5. Therefore, can continuously fine-tune the flow of loose gravel on the road surface 5 and ensuring the control of the spreading process fully automated.

Comme il est visible en particulier sur la figure 3, le rouleau doseur 13 du gravillonneur (et éventuellement les bavette et contre-bavette de réglage de la répartition des gravillons) ainsi que la rampe d'épandage 7 sont placés à la partie inférieure de l'ensemble 14, à une hauteur h faible au-dessus de la surface routière 5, cette hauteur h pouvant être de préférence inférieure à 300 mm.As can be seen in particular in FIG. 3, the metering roller 13 of the gravel spreader (and possibly the flap and adjusting flap of the gravel distribution) as well as the spreading ramp 7 are placed at the lower part of the assembly 14, at a low height h above the road surface 5, this height h possibly being less than 300 mm.

La rampe à liant bitumineux 7 s'étend, dans la direction transversale du dispositif de répandage 1, suivant toute la longueur du gravillonneur 10 et de la trémie-tampon 9 dans la direction transversale. En outre, la rampe à liant 7 est solidaire du gravillonneur 10 et de la trémie-tampon 9. Du fait de la faible hauteur de chute des gravillons sur la surface routière 5, la zone d'épandage de liant bitumineux par la rampe 7 et la zone d'épandage de gravillons par le gravillonneur 10 se recouvrent parfaitement suivant la direction transversale de la surface routière 5, sans qu'on ait à effectuer de réglage transversal de la rampe à liant 7.The bituminous binder ramp 7 extends in the transverse direction of the spreading device 1, along the entire length of the gravel spreader 10 and of the buffer hopper 9 in the transverse direction. In addition, the ramp to binder 7 is integral with the gravel spreader 10 and the buffer hopper 9. Due to the low drop height of the gravel on the road surface 5, the area bituminous binder spreading by ramp 7 and the spreading area of gravel by the gravel spreader 10 overlap perfectly in the direction transverse of the road surface 5, without having to adjust cross section of the binder ramp 7.

Le dispositif suivant l'invention présente donc une structure simple et le fonctionnement du dispositif d'épandage ne nécessite aucun réglage de position dans la direction transversale de la rampe à liant 7, par rapport au gravillonneur. Le fonctionnement est indépendant de la pente de la surface routière 5 qui peut présenter un dévers dans la direction transversale.The device according to the invention therefore has a simple structure and the operation of the spreading device does not require any adjustment of position in the transverse direction of the binder ramp 7, relative to the chip spreader. Operation is independent of the slope of the surface road 5 which may have a slope in the transverse direction.

De plus, comme représenté sur la figure 4, l'ensemble 14 comportant en particulier le gravillonneur 10 et la rampe à liant 7 peut être déplacé transversalement de part et d'autre d'une position neutre représentée en traits pleins sur la figure 4, entre une position 14' dans laquelle l'ensemble 14 est déporté au maximum vers la droite et, une position 14" dans laquelle l'ensemble 14 est déporté au maximum vers la gauche.In addition, as shown in Figure 4, the assembly 14 comprising in particular the gravel spreader 10 and the binder ramp 7 can be moved transversely on either side of a neutral position represented in solid lines in FIG. 4, between a position 14 ′ in which the assembly 14 is offset as far as possible to the right and, a position 14 "in which the assembly 14 is offset as far as possible to the left.

Bien entendu, la position de l'ensemble 14 peut être réglé d'une manière quelconque entre ces deux positions extrêmes grâce au vérin de réglage 20 monté dans une disposition transversale.Of course, the position of the assembly 14 can be adjusted in a way any between these two extreme positions thanks to the adjustment cylinder 20 mounted in a transverse arrangement.

Le déport maximal vers la droite et le déport maximal vers la gauche de l'ensemble 14, à partir de sa position neutre dans laquelle l'ensemble 14 est centré sur l'axe longitudinal médian du dispositif d'épandage 1, peuvent avoir des amplitudes différentes. Par exemple, comme représenté sur la figure 4, le déport maximal vers la droite de l'ensemble 14 peut être supérieur au déport maximal vers la gauche.Maximum offset to the right and maximum offset to the left of assembly 14, from its neutral position in which assembly 14 is centered on the median longitudinal axis of the spreading device 1, can have different amplitudes. For example, as shown in the figure 4, the maximum offset to the right of the assembly 14 may be greater at maximum offset to the left.

On a également représenté, dans la partie inférieure de la figure 4, les coupes respectives 5a et 5b d'une zone d'épandage de liant bitumineux et de gravillons réalisées avec le dispositif d'épandage dont l'ensemble 14 est déporté à droite au maximum et avec le dispositif d'épandage dont l'ensemble 14 est déporté au maximum vers la gauche.There is also shown, in the lower part of FIG. 4, the respective sections 5a and 5b of a bituminous binder spreading area and gravel produced with the spreading device, the assembly 14 is offset to the right as far as possible and with the spreading device, all of which 14 is offset as far as possible to the left.

Lorsqu'on veut réaliser un enduit superficiel constitué de liant bitumineux et de gravillons sur une chaussée comportant une bordure 22, par exemple une bordure de trottoir, l'ensemble 14 peut être disposé de manière décalée vers la droite, pour réaliser une bande de revêtement s'étendant dans la direction transversale suivant toute la longueur d'une zone 5a. On peut donc réaliser un enduit superficiel s'étendant jusqu'à la bordure 22, les trains de roues 3 du dispositif d'épandage étant parfaitement dégagés de la bordure 22 de la chaussée et se déplaçant à une certaine distance de la bordure 22.When you want to make a surface coating consisting of bituminous binder and gravel on a roadway having a border 22, by example a curb, the assembly 14 can be arranged so shifted to the right, to make a covering strip extending in the transverse direction along the entire length of an area 5a. We can therefore produce a surface coating extending to the edge 22, the wheel sets 3 of the spreading device being perfectly clear of the curb 22 of the carriageway and moving at a certain distance from the border 22.

Dans le cas où l'on réalise un enduit superficiel sur une chaussée, en deux passes adjacentes dans la direction transversale, une première passe étant réalisée dans un premier sens de déplacement du dispositif d'épandage et la seconde passe, dans le sens opposé de circulation du dispositif d'épandage, on peut avantageusement placer l'ensemble 14 dans sa position 14", déporté vers la gauche.In the case where a surface coating is produced on a pavement, in two adjacent passes in the transverse direction, a first pass being carried out in a first direction of movement of the spreading device and the second pass, in the opposite direction of circulation of the device spreading, it is advantageous to place the assembly 14 in its position 14 ", offset to the left.

Lorsqu'on réalise la première passe, comme représenté sur la figure 4, qui est une vue de l'arrière du dispositif d'épandage en déplacement sur la surface routière, on réalise une couche d'épandage qui s'étend suivant une zone 5b, dans la direction transversale, au-delà du train de roues gauche 3b du dispositif d'épandage vers le milieu de la chaussée.When performing the first pass, as shown in the figure 4, which is a view of the rear of the spreading device moving on the road surface, a spreading layer is produced which extends along a zone 5b, in the transverse direction, beyond the left wheel set 3b spreading device towards the middle of the roadway.

Lorsqu'on réalise la seconde passe par un déplacement en sens inverse du dispositif d'épandage, l'ensemble 14 déporté vers la gauche peut réaliser une couche de recouvrement de la partie d'extrémité de la couche réalisée lors de la première passe, déportée vers la gauche vers le milieu de la chaussée, sans avoir à faire rouler le train de roues gauche 3 du dispositif d'épandage sur la zone d'extrémité de la couche d'enduit réalisée lors de la première passe, les trains de roues gauches du dispositif d'épandage se déplaçant uniquement sur la surface d'origine de la chaussée. De cette manière, on évite de détériorer la couche de revêtement dans la partie soumise au recouvrement et de faire rouler les trains de roues sur du liant bitumineux frais.When performing the second pass by a displacement in opposite direction of the spreading device, the assembly 14 offset to the left can make a covering layer of the end part of the layer made during the first pass, offset to the left towards the middle of the roadway, without having to drive the left wheel train 3 of the device spreading on the end zone of the coating layer produced during the first pass, the left wheel sets of the spreading device are moving only on the original surface of the roadway. In this way, avoiding deterioration of the coating layer in the subject part covering and running the wheel sets on bituminous binder fresh.

Le dispositif suivant l'invention de structure simple permet donc de faciliter le réglage de l'opération d'épandage de le rendre insensible à des conditions telles que l'état de remplissage des trémies et la pente de la surface routière sur laquelle on réalise l'épandage. Le procédé d'épandage est ainsi facilement automatisable.The device according to the invention of simple structure therefore makes it possible to facilitate the adjustment of the spreading operation to make it insensitive to conditions such as hoppers filling state and surface slope road on which the spreading is carried out. The spreading process is thus easily automated.

En outre, le dispositif permet de réaliser facilement des travaux de revêtement de bords de chaussée ou en deux passes adjacentes successives, lorsque l'ensemble comportant le gravillonneur et la rampe à liant peut être déplacé et réglé en position dans la direction transversale.In addition, the device makes it possible to easily carry out work of pavement edges or in two successive adjacent passes, when the assembly comprising the gravel spreader and the binder ramp can be moved and adjusted in position in the transverse direction.

En particulier, la qualité des parties de recouvrement de deux passes successives de revêtement est améliorée du fait que les trains de roues du dispositif d'épandage n'ont pas à circuler sur la première couche de revêtement réalisée lors d'une première passe.In particular, the quality of the overlapping parts of two passes successive coating is improved by the fact that the wheel sets of the spreading device do not have to circulate on the first coating layer performed during a first pass.

L'invention s'applique à des dispositifs utilisés pour de nombreux travaux de revêtement utilisant des liants de natures très diverses.The invention applies to devices used for numerous works coating using binders of very different natures.

Claims (5)

Dispositif d'épandage de liant liquide et de gravillons sur une surface routière (5) constitué par un engin routier (1) comportant un châssis (4) et au moins une trémie (8, 9), un gravillonneur (10) et une rampe à liant (7), montés sur le châssis (4) à l'arrière de l'engin routier (1), caractérisé par le fait qu'il comporte une trémie réservoir (8) pour le stockage de gravillons et un ensemble (14) comportant une trémie-tampon (9) disposée avec une ouverture d'entrée (9a) en-dessous d'une ouverture de sortie (8b) de la trémie réservoir (8), un gravillonneur (10) à rouleau doseur (13) solidaire d'une partie de sortie (9b) de la trémie tampon (9) et la rampe à liant (7) solidaire de la trémie-tampon (9) et du gravillonneur (10), montés à l'arrière du châssis (4) de l'engin routier (1).Device for spreading liquid binder and gravel on a road surface (5) consisting of a road vehicle (1) comprising a chassis (4) and at least one hopper (8, 9), a gravel spreader (10) and a ramp with binder (7), mounted on the chassis (4) at the rear of the road vehicle (1), characterized in that it comprises a tank hopper (8) for storing gravel and an assembly (14 ) comprising a buffer hopper (9) arranged with an inlet opening (9a) below an outlet opening (8b) of the tank hopper (8), a gravel spreader (10) with dosing roller (13) secured to an outlet part (9b) of the buffer hopper (9) and the binder ramp (7) secured to the buffer hopper (9) and the gravel spreader (10), mounted at the rear of the chassis (4 ) of the road vehicle (1). Dispositif suivant la revendication 1, caractérisé par le fait que l'ensemble (14) est monté mobile dans une direction transversale sur le châssis (4) de l'engin routier (1) et réglable en position, entre une position de déport maximal à droite (14') et une position de déport maximal à gauche (14"), par rapport à une position neutre dans laquelle l'ensemble (14) est centré sur un axe longitudinal médian de l'engin routier (1).Device according to claim 1, characterized in that the assembly (14) is mounted movable in a transverse direction on the chassis (4) of the road vehicle (1) and adjustable in position, between a position of maximum offset at right (14 ') and a position of maximum offset to the left (14 "), relative to a neutral position in which the assembly (14) is centered on a median longitudinal axis of the road vehicle (1). Dispositif suivant la revendication 2, caractérisé par le fait que l'ensemble (14) comporte un bâti (15) constitué de poutrelles (15a, 15b, 15c) sur lequel est fixée la trémie-tampon (9), le gravillonneur (10) et la rampe à liant (7) étant fixés de manière solidaire de la trémie-tampon (9), et que l'engin routier (1) comporte des jambes de suspension (16, 18) portant, par l'intermédiaire d'arbres horizontaux (17', 19'), des galets respectifs (17, 19) à axes horizontaux sur lesquels repose le bâti (15) de l'ensemble (14), par l'intermédiaire de poutrelles horizontales (15b, 15c).Device according to claim 2, characterized in that the assembly (14) comprises a frame (15) consisting of beams (15a, 15b, 15c) on which is fixed the buffer hopper (9), the gravel spreader (10) and the binder ramp (7) being fixedly attached to the buffer hopper (9), and that the road vehicle (1) has suspension legs (16, 18) bearing, by means of shafts horizontal (17 ', 19'), respective rollers (17, 19) with horizontal axes on which the frame (15) of the assembly (14) rests, by means of horizontal beams (15b, 15c). Dispositif suivant la revendication 3, caractérisé par le fait qu'il comporte un vérin (20) dans une disposition transversale dont le corps est relié à la trémie réservoir (8) fixée sur le châssis (4) de l'engin routier (1) et dont la tige mobile est reliée au bâti (15) de l'ensemble (14).Device according to Claim 3, characterized in that it comprises a jack (20) in a transverse arrangement, the body of which is connected to the tank hopper (8) fixed to the chassis (4) of the road vehicle (1) and whose movable rod is connected to the frame (15) of the assembly (14). Dispositif suivant l'une quelconque des revendications 1 à 4, caractérisé par le fait que la rampe à liant (7) et le rouleau doseur (13) du gravillonneur (10) sont montés à la partie inférieure de l'ensemble (14), à une hauteur réduite, par exemple inférieure à 300 mm, au-dessus de la surface routière (5) sur laquelle se déplace l'engin routier (1).Device according to any one of Claims 1 to 4, characterized in that the binder ramp (7) and the dosing roller (13) of the gravel spreader (10) are mounted on the lower part of the assembly (14), at a reduced height, for example less than 300 mm, above the road surface (5) on which the road vehicle (1) moves.
EP03293033A 2002-12-30 2003-12-04 Equipment for the spreading of binder and aggregate on a road surface Withdrawn EP1435412A1 (en)

Applications Claiming Priority (2)

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FR0216866A FR2849455B1 (en) 2002-12-30 2002-12-30 DEVICE FOR SPREADING LIQUID BINDER AND GRAVELS ON A ROAD SURFACE
FR0216866 2002-12-30

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CN113189612A (en) * 2021-05-17 2021-07-30 长安大学 Gravel seal quality detection device based on depth camera
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US4757918A (en) * 1984-08-29 1988-07-19 The Phoenix Engineering Company Limited Spreading apparatus
FR2626907A1 (en) * 1988-02-09 1989-08-11 Secmair Sa Road vehicle for the simultaneous spreading of binder and gravel on a roadway
FR2795437A1 (en) * 1999-04-19 2000-12-29 Cmtp Sarl Storage and spreading unit for gravel and/or binder for roads has gravel storage unit consisting of non-tipping body with first storage zone, supplied with gravel from outside, and buffer zone fed from storage zone by elevator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101949124A (en) * 2010-09-27 2011-01-19 哈尔滨工业大学 Device for automatically spraying heat-reflective coating for roads
CN113189612A (en) * 2021-05-17 2021-07-30 长安大学 Gravel seal quality detection device based on depth camera
EP4379139A1 (en) * 2022-12-02 2024-06-05 Secmair Mobile unit for building and/or repairing a road surface

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FR2849455A1 (en) 2004-07-02
FR2849455B1 (en) 2005-03-25

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