EP0322283A1 - Apparatus for storing and handling granular material for road construction works - Google Patents

Apparatus for storing and handling granular material for road construction works Download PDF

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Publication number
EP0322283A1
EP0322283A1 EP88403187A EP88403187A EP0322283A1 EP 0322283 A1 EP0322283 A1 EP 0322283A1 EP 88403187 A EP88403187 A EP 88403187A EP 88403187 A EP88403187 A EP 88403187A EP 0322283 A1 EP0322283 A1 EP 0322283A1
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EP
European Patent Office
Prior art keywords
hoppers
conveyor
chassis
aggregates
line
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Withdrawn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
EP88403187A
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German (de)
French (fr)
Inventor
Guy Marconnet
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Ermont CM
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Ermont CM
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Publication date
Application filed by Ermont CM filed Critical Ermont CM
Publication of EP0322283A1 publication Critical patent/EP0322283A1/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Withdrawn legal-status Critical Current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
    • E01C19/02Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for preparing the materials
    • E01C19/05Crushing, pulverising or disintegrating apparatus; Aggregate screening, cleaning, drying or heating apparatus; Dust-collecting arrangements specially adapted therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65DCONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00Large containers
    • B65D88/26Hoppers, i.e. containers having funnel-shaped discharge sections
    • B65D88/30Hoppers, i.e. containers having funnel-shaped discharge sections specially adapted to facilitate transportation from one utilisation site to another

Definitions

  • the invention relates to a device for storing and handling aggregates for a construction site and in particular for a road site.
  • aggregates of different types and sizes are used, for example for the manufacture of coating materials such as hot mixes.
  • Hot mixes are generally produced in a device called drum-drier-coating at the inlet of which aggregates are continuously supplied in determined quantities and according to a defined particle size dosage.
  • the aggregates of different types are stored in hoppers placed successively one after the other to form a line of hoppers under which the aggregates are taken in metered quantities.
  • a mixture of defined composition is brought to the inlet of the drum by a weighing conveyor making it possible to precisely determine the mass flow rate of the aggregates introduced into the drum.
  • equipment comprising a chassis mounted on wheels and fitted with ground support crutches carrying the line of hoppers, the number of hoppers generally being of the order of four and the total length of the chassis. being of the order of twenty meters.
  • the weighing conveyor is generally made up of a belt conveyor which can be transported by truck and set up in an inclined position on the site, between the exit from the line of hoppers and the entry of the drum-dryer-wrapper.
  • the output from the hopper line is at a level slightly above the ground, while the drum-dryer-coating conveyor belt is at a level of the order of three meters above the ground or a little more.
  • the storage hoppers and the dosing conveyor are set up so as to ensure the supply of the drum-dryer-wrapper.
  • the dosing conveyor must be arranged and adjusted according to the position of the hoppers and the drum-dryer-wrapper.
  • the handling and installation of the conveyor requires the presence of a lifting machine on the site.
  • the inclination of the conveyor can be adjusted by means of crutches resting on the ground.
  • the object of the invention is therefore to propose a device for the storage and transfer of aggregates for construction sites, in particular for road construction sites, ensuring the storage of aggregates of different natures and their transport in quantities dosed at the entry of a use station, this device being able to be easily transported, handled and installed on a mobile site.
  • the device comprises: - a single elongated chassis mounted on wheels and fitted with extendable and retractable crutches for its support on the ground, and, mounted on this chassis, - at least two hoppers arranged one after the other in the longitudinal direction of the chassis constituting a line of hoppers, a longitudinal continuous conveyor disposed along the line of hoppers below the lower outlet opening of these hoppers, - a weighing conveyor inclined with respect to the horizontal plane and arranged along the length of the chassis in parallel with respect to the line of hoppers, - And a continuous conveyor in transverse direction for the transfer of aggregates between the outlet of the longitudinal conveyor and one end of the weighing conveyor constituting its lowest part.
  • FIGs 1 and 2 we can see the entire device according to the invention which comprises an elongated frame 1 mounted on wheels 2 and secured to a hitching structure 3 allowing its connection to a towing vehicle at the end of chassis 1 opposite the wheels 2.
  • the device designed as a semi-trailer can be transported on the road in its configuration shown in Figure 1.
  • On the chassis are fixed on the other hand crutches to the ground 4 regularly distributed along the length of the chassis 1.
  • the extensible and retractable crutches 4 make it possible by their extension to support the device on the ground on the construction site, the wheels being raised above the ground when the crutches are in their fully extended position.
  • the chassis 1 also comprises a vertical support structure 5 constituted by assemblies produced from profiles fixed on each of the lateral sides of the chassis 1.
  • the structure 5 allows the suspension and the fixing of four hoppers 6 arranged successively one after the other along the length of the chassis 1.
  • the hoppers 6 are of substantially equal capacity and are each capable of enclosing a reserve of aggregates which is loaded into the hopper, on the site, from one of the sides of the chassis.
  • a continuous belt conveyor 8 is fixed to the chassis 1 along its entire length, vertically and below the outlet troughs 9 of the hoppers 6.
  • the aggregate contained in the corresponding hopper 6 flows at a constant rate on the conveyor belt of the conveyor 8.
  • the conveyor 8 makes it possible to transport the aggregate to the front part of the chassis 1 .
  • a weighing conveyor 10 placed in an inclined position relative to the horizontal plane.
  • the weighing conveyor 10 is fixed on a lateral side of the chassis 1 and on the vertical structure, laterally and outside the corresponding lateral side of the chassis 1.
  • the lowest part of the conveyor 10 is located at the front of the chassis 1, at the end part of the conveyor 8 which is inclined upwards.
  • a conveyor 11 of transverse direction is also fixed to the chassis 1 at its front part. This conveyor 11 makes it possible to join the discharge zone of the conveyor 8 to a zone situated directly above and above the lower part of the conveyor 10.
  • the aggregates taken from a hopper 6 are therefore liable to pass from the conveyor 8 to the conveyor 10 via the transverse conveyor 11 which is inclined upwards from its part located below the conveyor 8 to its part situated above above the conveyor 10, that is to say from the inside to the outside of the chassis 1.
  • the weighing conveyor 10 is fixed in lateral position on the chassis 1 and the support structure 5, over the entire length of the chassis, so that its end part 10a constituting the highest part of the conveyor is projecting relative to the rear end of the chassis.
  • This end part 10a of the conveyor 10 constituting its discharge part can be placed in a position such that the discharge end of the conveyor is located above the conveyor belt 13 of a drum-dryer-coater.
  • This position shown in solid lines in Figure 1 corresponds to the operating position of the conveyor for feeding the drum.
  • the end portion 10a of the conveyor 10 can also be placed in a folded position 10′a shown in broken lines in FIG. 1.
  • This position 10′a corresponds to the position of transport on the road of the device, the length of which is thus reduced in relation to the length in the service position on the construction site.
  • the overall length on the road of the semi-trailer is of the order of 18 meters.
  • the length of the conveyor 10 which is itself greater than 18 meters allows a supply of the charging conveyor 13 of a drum-dryer-wrapper at a level situated at a height h greater than 4 meters above the ground of the site, with a very slight slope from the horizontal plane.
  • the weighing conveyor 10 comprises continuous weighing means making it possible to precisely determine the mass flow of aggregates poured onto the conveyor belt 13 and introduced into the drum.
  • the aggregates can be poured onto the conveyor belt 8, from one or more hoppers 6, these aggregates then being taken up by the transverse conveyor 11, then the weighing conveyor 10, to be discharged onto the conveyor belt 13 of the drum.
  • the hoppers 6 can be emptied successively by dumping on the conveyor 8, the filling of one of the hoppers can be carried out while the dumping is ensured by another hopper
  • the device also makes it possible to feed the drum, either simultaneously or successively, with aggregates of different natures.
  • the installation of the device on the site is extremely simple, this device being brought into its working position by the tractor having ensured its transport on the road, then fixed in the working position by lowering the crutches 4 and lifting the chassis 1 so that the wheel set 2 is no longer in contact with the ground.
  • the end of the weighing conveyor 10 is brought from its position 10′a to its raised position 10a before the installation of the device.
  • the device After loading the hoppers 6, the device is ready to operate.
  • the installation does not require any crane or any additional lifting means and can be carried out very quickly.
  • the road transport of the aggregate storage and handling assembly can be carried out using a tractor hitched to the front part of the chassis 1, without it is necessary to dismantle and load part of the device.
  • the discharge end of the weighing conveyor can be placed on the site at a significant height, although the slope of this weighing conveyor is slight.
  • the overall length of the device corresponds practically to the length of the line of hoppers and its overall width is only very slightly greater than the maximum width of the hoppers.
  • the dumping height H of the device which can be relatively large makes it possible to react read samples of aggregates at the conveyor belt, before the entry of these aggregates into the drum-dryer-coating.
  • the device according to the invention can allow the storage and handling of aggregates of different types and can be produced in various forms with different capacities.
  • the device according to the invention can make it possible not only to supply a drum-dryer-coater with aggregates but also any other station for using such aggregates.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)

Abstract

The apparatus comprises a single elongated chassis (1) mounted on wheels (2) and equipped with prop stands (4). On the chassis (1) are mounted hoppers (6), arranged one after the other in the longitudinal direction. A longitudinal transporter (8) is arranged beneath the lower discharge openings (9) of the hoppers (6). A slanting weighing conveyor (10) is placed along the length of the chassis (1) parallel to the line of hoppers (6). A continuous transverse transporter (11) makes it possible to transfer granular materials between the discharge of the transporter (8) and the lower end of the weighing conveyor (10). <IMAGE>

Description

L'invention concerne un dispositif de sto­ckage et de manutention de granulats pour un chantier de construction et en particulier pour un chantier routier.The invention relates to a device for storing and handling aggregates for a construction site and in particular for a road site.

Sur les chantiers routiers ou autoroutiers, on utilise des granulats de natures et de dimensions différentes, par exemple pour la fabrication de maté­riaux de revêtement tels que des enrobés à chaud.On road or motorway construction sites, aggregates of different types and sizes are used, for example for the manufacture of coating materials such as hot mixes.

Les enrobés à chaud sont généralement éla­borés dans un dispositif appelé tambour-sécheur-enro­beur à l'entrée duquel on amène en continu des granu­lats en quantités déterminées et suivant un dosage granulométrique défini.Hot mixes are generally produced in a device called drum-drier-coating at the inlet of which aggregates are continuously supplied in determined quantities and according to a defined particle size dosage.

Les granulats de différents types sont sto­ckés dans des trémies placées successivement l'une à la suite de l'autre pour constituer une ligne de tré­mies sous laquelle les granulats sont prélevés en quantités dosées. Un mélange de composition définie est amené à l'entrée du tambour par un convoyeur pe­seur permettant de déterminer de façon précise le dé­bit massique des granulats introduits dans le tambour.The aggregates of different types are stored in hoppers placed successively one after the other to form a line of hoppers under which the aggregates are taken in metered quantities. A mixture of defined composition is brought to the inlet of the drum by a weighing conveyor making it possible to precisely determine the mass flow rate of the aggregates introduced into the drum.

Des quantités bien déterminées de pulvéru­lent sont également amenées au convoyeur peseur et incorposées au mélange de granulats.Well-defined quantities of pulverulent are also brought to the weighing conveyor and incorporated into the aggregate mixture.

Les chantiers routiers étant essentiellement des chantiers mobiles, on a cherché à simplifier et à faciliter au maximum le transport des différents dis­positifs utilisés sur ces chantiers.Since road construction sites are essentially mobile construction sites, attempts have been made to simplify and facilitate the transport of the various devices used on these construction sites as much as possible.

C'est ainsi qu'on a proposé des matériels comportant un châssis monté sur roues et muni de bé­quilles d'appui au sol portant la ligne de trémies, le nombre de trémies étant généralement de l'ordre de quatre et la longueur totale du châssis étant de l'or­dre de vingt mètres.Thus, equipment has been proposed comprising a chassis mounted on wheels and fitted with ground support crutches carrying the line of hoppers, the number of hoppers generally being of the order of four and the total length of the chassis. being of the order of twenty meters.

Le convoyeur peseur est généralement consti­tué par un convoyeur à bande qui peut être transporté par camion et mis en place en position inclinée sur le chantier, entre la sortie de la ligne de trémies et l'entrée du tambour-sécheur-enrobeur. La sortie de la ligne de trémies est à un niveau situé peu au-dessus du sol cependant que le tapis d'enfournement du tam­bour-sécheur-enrobeur est à un niveau de l'ordre de trois mètres au-dessus du sol ou un peu plus.The weighing conveyor is generally made up of a belt conveyor which can be transported by truck and set up in an inclined position on the site, between the exit from the line of hoppers and the entry of the drum-dryer-wrapper. The output from the hopper line is at a level slightly above the ground, while the drum-dryer-coating conveyor belt is at a level of the order of three meters above the ground or a little more.

A l'ouverture du chantier, les trémies de stockage et le convoyeur doseur sont mis en place de façon à assurer l'alimentation du tambour-sécheur-­enrobeur.At the opening of the site, the storage hoppers and the dosing conveyor are set up so as to ensure the supply of the drum-dryer-wrapper.

Le convoyeur doseur doit être disposé et ré­glé en fonction de la position des trémies et du tam­bour-sécheur-enrobeur. La manutention et la mise en place du convoyeur requièrent la présence d'une machi­ne de levage sur le chantier. Le réglage d'inclinaison du convoyeur peut être effectué grâce à des béquilles prenant appui au sol.The dosing conveyor must be arranged and adjusted according to the position of the hoppers and the drum-dryer-wrapper. The handling and installation of the conveyor requires the presence of a lifting machine on the site. The inclination of the conveyor can be adjusted by means of crutches resting on the ground.

Le transport, la manutention et la mise en place des divers éléments du chantier nécessaires pour alimenter le tambour en granulats sont donc des opéra­tions relativement longues et nécessitant l'utilisa­tion de matériels annexes.The transport, handling and installation of the various elements of the site necessary to supply the drum with aggregates are therefore relatively long operations and requiring the use of additional equipment.

Le but de l'invention est donc de proposer un dispositif de stockage et de transfert de granulats pour chantiers de construction, en particulier pour chantiers routiers, assurant le stockage de granulats de natures différentes et leur transport en quantités dosées à l'entrée d'un poste d'utilisation, ce dispo­sitif pouvant être facilement transporté, manutention­né et mis en place sur un chantier mobile.The object of the invention is therefore to propose a device for the storage and transfer of aggregates for construction sites, in particular for road construction sites, ensuring the storage of aggregates of different natures and their transport in quantities dosed at the entry of a use station, this device being able to be easily transported, handled and installed on a mobile site.

Dans ce but, le dispositif suivant l'inven­tion comporte :
- un châssis unique allongé monté sur roues et muni de béquilles extensibles et rétractables pour son appui au sol,
et, montés sur ce châssis,
- au moins deux trémies disposées l'une à la suite de l'autre dans la direction longitudinale du châssis constituant une ligne de trémies,
- un transporteur continu longitudinal disposé suivant la ligne de trémies en dessous de l'ouverture de sor­tie inférieure de ces trémies,
- un convoyeur peseur incliné par rapport au plan ho­rizontal et disposé suivant la longueur du châssis en parallèle par rapport à la ligne de trémies,
- et un transporteur continu de direction transversale pour le transfert de granulats entre la sortie du transporteur longitudinal et une extrémité du convoyeur peseur constituant sa partie la plus basse.
To this end, the device according to the invention comprises:
- a single elongated chassis mounted on wheels and fitted with extendable and retractable crutches for its support on the ground,
and, mounted on this chassis,
- at least two hoppers arranged one after the other in the longitudinal direction of the chassis constituting a line of hoppers,
a longitudinal continuous conveyor disposed along the line of hoppers below the lower outlet opening of these hoppers,
- a weighing conveyor inclined with respect to the horizontal plane and arranged along the length of the chassis in parallel with respect to the line of hoppers,
- And a continuous conveyor in transverse direction for the transfer of aggregates between the outlet of the longitudinal conveyor and one end of the weighing conveyor constituting its lowest part.

Afin de bien faire comprendre l'invention, on va maintenant décrire, à titre d'exemple non limi­tatif, en se référant aux figures jointes en annexe, un dispositif de stockage et de transfert suivant l'invention utilisé pour l'approvisionnement d'un tam­bour-sécheur-enrobeur.

  • La figure 1 représente une vue latérale en élévation de l'ensemble du dispositif.
  • La figure 2 représente une vue de devant en élévation suivant 2 de la figure 1.
In order to clearly understand the invention, a description will now be given, by way of nonlimiting example, with reference to the attached figures, of a storage and transfer device according to the invention used for supplying a drum-dryer-wrapper.
  • Figure 1 shows a side elevational view of the entire device.
  • FIG. 2 represents a front view in elevation along 2 of FIG. 1.

Sur les figures 1 et 2, on voit l'ensemble du dispositif suivant l'invention qui comporte un châssis allongé 1 monté sur des roues 2 et solidaire d'une structure d'attelage 3 permettant son raccorde­ment à un véhicule tracteur à l'extrémité du châssis 1 opposée aux roues 2. Le dispositif conçu sous une for­me semi-remorque peut être transporté sur route dans sa configuration représentée sur la figure 1. Sur le châssis sont fixées d'autre part des béquilles d'appui au sol 4 régulièrement réparties suivant la longueur du châssis 1. Les béquilles 4 extensibles et rétracta­bles permettent de réaliser par leur extension l'appui au sol du dispositif sur le chantier, les roues étant soulevées au-dessus du sol lorsque les béquilles sont dans leur position d'extension complète.In Figures 1 and 2, we can see the entire device according to the invention which comprises an elongated frame 1 mounted on wheels 2 and secured to a hitching structure 3 allowing its connection to a towing vehicle at the end of chassis 1 opposite the wheels 2. The device designed as a semi-trailer can be transported on the road in its configuration shown in Figure 1. On the chassis are fixed on the other hand crutches to the ground 4 regularly distributed along the length of the chassis 1. The extensible and retractable crutches 4 make it possible by their extension to support the device on the ground on the construction site, the wheels being raised above the ground when the crutches are in their fully extended position.

Le châssis 1 comporte également une structu­re de support verticale 5 constituée par des ensembles réalisés à partir de profilés fixés sur chacun des côtés latéraux du châssis 1.The chassis 1 also comprises a vertical support structure 5 constituted by assemblies produced from profiles fixed on each of the lateral sides of the chassis 1.

La structure 5 permet la suspension et la fixation de quatre trémies 6 disposées successivement l'une à la suite de l'autre suivant la longueur du châssis 1.The structure 5 allows the suspension and the fixing of four hoppers 6 arranged successively one after the other along the length of the chassis 1.

Les trémies 6 sont de capacité sensiblement égale et sont susceptible de renfermer chacune une réserve de granulats qui est chargée dans la trémie, sur le chantier, depuis l'un des côtés du châssis.The hoppers 6 are of substantially equal capacity and are each capable of enclosing a reserve of aggregates which is loaded into the hopper, on the site, from one of the sides of the chassis.

Un transporteur à bande continu 8 est fixé sur le châssis 1 suivant toute sa longueur, à la verticale et en dessous des goulottes de sortie 9 des trémies 6.A continuous belt conveyor 8 is fixed to the chassis 1 along its entire length, vertically and below the outlet troughs 9 of the hoppers 6.

Lorsqu'une goulotte 9 est mise en position ouverte de déversement, le granulat contenu dans la trémie 6 correspondante s'écoule à débit constant sur le tapis transporteur du convoyeur 8. Le convoyeur 8 permet de transporter le granulat vers la partie avant du châssis 1.When a chute 9 is placed in the open discharge position, the aggregate contained in the corresponding hopper 6 flows at a constant rate on the conveyor belt of the conveyor 8. The conveyor 8 makes it possible to transport the aggregate to the front part of the chassis 1 .

Sur le châssis 1 est également fixé, en pa­rallèle par rapport à la ligne de trémies 6, un convoyeur peseur 10 placé dans une position inclinée par rapport au plan horizontal. Le convoyeur peseur 10 est fixé sur un côté latéral du châssis 1 et sur la structure verticale, latéralement et à l'extérieur du côté latéral correspondant du châssis 1.On the chassis 1 is also fixed, parallel to the hopper line 6, a weighing conveyor 10 placed in an inclined position relative to the horizontal plane. The weighing conveyor 10 is fixed on a lateral side of the chassis 1 and on the vertical structure, laterally and outside the corresponding lateral side of the chassis 1.

La partie la plus basse du convoyeur 10 est située à l'avant du châssis 1, au niveau de la partie terminale du convoyeur 8 qui est inclinée vers le haut.The lowest part of the conveyor 10 is located at the front of the chassis 1, at the end part of the conveyor 8 which is inclined upwards.

Un convoyeur 11 de direction transversale est également fixé sur le châssis 1 à sa partie anté­rieure. Ce convoyeur 11 permet de joindre la zone de déversement du convoyeur 8 à une zone située à l'a­plomb et au-dessus de la partie inférieure du convoyeur 10.A conveyor 11 of transverse direction is also fixed to the chassis 1 at its front part. This conveyor 11 makes it possible to join the discharge zone of the conveyor 8 to a zone situated directly above and above the lower part of the conveyor 10.

Les granulats prélevés dans une trémie 6 sont donc susceptibles de passer du convoyeur 8 au convoyeur 10 par l'intermédiaire du convoyeur trans­versal 11 qui est incliné vers le haut depuis sa partie située en-dessous du transporteur 8 jusqu'à sa partie située au-dessus du convoyeur 10, c'est-à-dire de l'intérieur vers l'extérieur du châssis 1.The aggregates taken from a hopper 6 are therefore liable to pass from the conveyor 8 to the conveyor 10 via the transverse conveyor 11 which is inclined upwards from its part located below the conveyor 8 to its part situated above above the conveyor 10, that is to say from the inside to the outside of the chassis 1.

Le convoyeur peseur 10 est fixé en position latérale sur le châssis 1 et la structure de support 5, sur toute la longueur du châssis, de manière que sa partie d'extrémité 10a constituant la partie la plus haute du convoyeur soit en saillie par rapport à l'ex­trémité arrière du châssis. Cette partie d'extrémité 10a du convoyeur 10 constituant sa partie de déverse­ment peut être placée dans une position telle que l'extrémité de déversement du convoyeur soit située au-dessus du tapis enfourneur 13 d'un tambour-sécheur-­enrobeur. Cette position représentée en traits pleins sur la figure 1 correspond à la position en service du convoyeur permettant l'alimentation du tambour.The weighing conveyor 10 is fixed in lateral position on the chassis 1 and the support structure 5, over the entire length of the chassis, so that its end part 10a constituting the highest part of the conveyor is projecting relative to the rear end of the chassis. This end part 10a of the conveyor 10 constituting its discharge part can be placed in a position such that the discharge end of the conveyor is located above the conveyor belt 13 of a drum-dryer-coater. This position shown in solid lines in Figure 1 corresponds to the operating position of the conveyor for feeding the drum.

La partie d'extrémité 10a du convoyeur 10 peut également être placée dans une position repliée 10′a représentée en traits interrompus sur la figure 1. Cette position 10′a correspond à la position de transport sur route du dispositif dont la longueur est ainsi réduite par rapport à la longueur en position de service sur le chantier.The end portion 10a of the conveyor 10 can also be placed in a folded position 10′a shown in broken lines in FIG. 1. This position 10′a corresponds to the position of transport on the road of the device, the length of which is thus reduced in relation to the length in the service position on the construction site.

Dans le cas d'un dispositif comportant qua­tre trémies d'une capacité voisine de dix tonnes, la longueur hors tout sur route de la semi-remorque est de l'ordre de 18 mètres.In the case of a device comprising four hoppers with a capacity close to ten tonnes, the overall length on the road of the semi-trailer is of the order of 18 meters.

La longueur du convoyeur 10 qui est elle-­même supérieure à 18 mètres permet une alimentation du tapis enfourneur 13 d'un tambour-sécheur-enrobeur à un niveau situé à une hauteur h supérieure à 4 mètres au-­dessus du sol du chantier, avec une pente très faible par rapport au plan horizontal.The length of the conveyor 10 which is itself greater than 18 meters allows a supply of the charging conveyor 13 of a drum-dryer-wrapper at a level situated at a height h greater than 4 meters above the ground of the site, with a very slight slope from the horizontal plane.

Le convoyeur peseur 10 comporte des moyens de pesée continus permettant de déterminer avec préci­sion le débit massique de granulats déversé sur le ta­pis enfourneur 13 et introduit dans le tambour.The weighing conveyor 10 comprises continuous weighing means making it possible to precisely determine the mass flow of aggregates poured onto the conveyor belt 13 and introduced into the drum.

Les granulats peuvent être déversés sur le tapis du transporteur 8, à partir d'une ou plusieurs trémies 6, ces granulats étant ensuite repris par le transporteur transversal 11, puis le convoyeur peseur 10, pour être déversés sur le tapis enfourneur 13 du tambour.The aggregates can be poured onto the conveyor belt 8, from one or more hoppers 6, these aggregates then being taken up by the transverse conveyor 11, then the weighing conveyor 10, to be discharged onto the conveyor belt 13 of the drum.

Les trémies 6 peuvent être vidées successi­vement par déversement sur le transporteur 8, le rem­plissage de l'une des trémies pouvant être effectué pendant que le déversement est assuré par une autre trémieThe hoppers 6 can be emptied successively by dumping on the conveyor 8, the filling of one of the hoppers can be carried out while the dumping is ensured by another hopper

Le dispositif permet également d'alimenter le tambour, soit simultanément, soit successivement, avec des granulats de natures différentes.The device also makes it possible to feed the drum, either simultaneously or successively, with aggregates of different natures.

Dans tous les cas, une alimentation et un fonctionnement en continu du tambour peuvent être assurés.In all cases, continuous feeding and operation of the drum can be ensured.

La mise en place du dispositif sur le chan­tier est extrêmement simple, ce dispositif étant amené dans sa position de travail par le tracteur ayant as­suré son transport sur route, puis fixé en position de travail par descente des béquilles 4 et soulévèment du châssis 1 de manière que le train de roues 2 ne soit plus en contact avec le sol. L'extrémité du convoyeur peseur 10 est amené de sa position 10′a à sa position relevée 10a préalablement à la mise en place du dispo­sitif.The installation of the device on the site is extremely simple, this device being brought into its working position by the tractor having ensured its transport on the road, then fixed in the working position by lowering the crutches 4 and lifting the chassis 1 so that the wheel set 2 is no longer in contact with the ground. The end of the weighing conveyor 10 is brought from its position 10′a to its raised position 10a before the installation of the device.

Après chargement des trémies 6, le disposi­tif est prêt à fonctionner. La mise en place ne né­cessite aucune grue ni aucun moyen de levage annexe et peut être réalisée très rapidement.After loading the hoppers 6, the device is ready to operate. The installation does not require any crane or any additional lifting means and can be carried out very quickly.

Lorsqu'on réalise le transfert du matériel d'un chantier à un autre, le transport sur route de l'ensemble de stockage et de manutention du granulat peut être réalisé grâce à un tracteur attelé à la par­tie antérieure du châssis 1, sans qu'il soit nécessai­re de réaliser le démontage et le chargement d'une partie du dispositif.When the material is transferred from one site to another, the road transport of the aggregate storage and handling assembly can be carried out using a tractor hitched to the front part of the chassis 1, without it is necessary to dismantle and load part of the device.

D'autre part, l'extrémité de déversement du convoyeur peseur peut être placée sur le chantier à une hauteur importante, bien que la pente de ce convoyeur peseur soit faible. L'encombrement en lon­gueur du dispositif correspond pratiquement à la lon­gueur de la ligne de trémies et son encombrement en largeur n'est que très légèrement supérieur à la lar­geur maximale des trémies.On the other hand, the discharge end of the weighing conveyor can be placed on the site at a significant height, although the slope of this weighing conveyor is slight. The overall length of the device corresponds practically to the length of the line of hoppers and its overall width is only very slightly greater than the maximum width of the hoppers.

La hauteur de déversement H du dispositif qui peut être relativement importante permet de réa­ liser des prélèvements de granulats au niveau du tapis enfourneur, avant l'entrée de ces granulats dans le tambour-sécheur-enrobeur.The dumping height H of the device which can be relatively large makes it possible to react read samples of aggregates at the conveyor belt, before the entry of these aggregates into the drum-dryer-coating.

Le dispositif selon l'invention peut permet­tre le stockage et la manutention de granulats de types différents et peut être réalisé suivant des for­mes variées avec des capacités différentes.The device according to the invention can allow the storage and handling of aggregates of different types and can be produced in various forms with different capacities.

L'invention ne se limite pas au mode de réa­lisation qui a été décrit.The invention is not limited to the embodiment which has been described.

C'est ainsi que les transporteurs et convoyeurs de manutention peuvent être réalisés sous des formes variées. Le châssis lui-même, ses moyens de roulement et d'appui au sol et sa structure de support verticale peuvent être réalisés de manière différente de celles qui ont été décrites.This is how transporters and handling conveyors can be produced in various forms. The chassis itself, its rolling and ground support means and its vertical support structure can be produced in a manner different from those which have been described.

Enfin, le dispositif suivant l'invention peut permettre non seulement d'alimenter un tambour-­sécheur-enrobeur en granulats mais encore tout autre poste d'utilisation de tels granulats.Finally, the device according to the invention can make it possible not only to supply a drum-dryer-coater with aggregates but also any other station for using such aggregates.

Claims (6)

1.- Dispositif de stockage et de manutention de granulats pour chantiers de construction, en parti­culier pour chantiers routiers, assurant le stockage de granulats de natures différentes et leur transport en quantités dosées à l'entrée d'un poste d'utilisa­tion, caractérisé par le fait qu'il comporte :
- un châssis unique allongé (1) monté sur roues (2) et muni de béquilles extensibles et rétractables (4) pour son appui au sol
- et, montés sur ce châssis (1) :
- au moins deux trémies (6) disposées l'une à la suite de l'autre dans la direction longitudinale du châssis (1), constituant une ligne de trémies,
- un transporteur longitudinal (8) disposé suivant la ligne de trémies (6) en-dessous d'ouvertures de sortie inférieures (9) de ces trémies,
- un convoyeur peseur (10) incliné par rapport au plan horizontal et disposé suivant la longueur du châssis (1) en parallèle par rapport à la ligne de trémies (6),
- et un transporteur continu (11) de direction trans­versale pour le transfert des granulats entre la sor­tie du transporteur longitudinal (8) et une extrémité du convoyeur peseur (10) constituant sa partie la plus basse.
1.- Device for the storage and handling of aggregates for construction sites, in particular for road construction sites, ensuring the storage of aggregates of different types and their transport in metered quantities at the entrance to a use station, characterized by the fact that it includes:
- a single elongated frame (1) mounted on wheels (2) and provided with extendable and retractable crutches (4) for its support on the ground
- and, mounted on this chassis (1):
- at least two hoppers (6) arranged one after the other in the longitudinal direction of the frame (1), constituting a line of hoppers,
a longitudinal conveyor (8) arranged along the line of hoppers (6) below lower outlet openings (9) of these hoppers,
- a weighing conveyor (10) inclined relative to the horizontal plane and arranged along the length of the chassis (1) in parallel with the hopper line (6),
- And a continuous conveyor (11) in transverse direction for the transfer of aggregates between the outlet of the longitudinal conveyor (8) and one end of the weighing conveyor (10) constituting its lowest part.
2.- Dispositif suivant la revendication 1, caractérisé par le fait qu'il comporte une structure verticale 5 fixée sur les côtés du châssis (1) et per­mettant le support et la fixation des trémies (6).2.- Device according to claim 1, characterized in that it comprises a vertical structure 5 fixed on the sides of the frame (1) and allowing the support and the fixing of the hoppers (6). 3.- Dispositif de stockage suivant la reven­dication 2, caractérisé par le fait que le convoyeur peseur (10) est fixé sur un côté latéral du châssis (1) et sur la structure verticale (5), latéralement et à l'extérieur du côté latéral correspondant du châssis (1).3.- Storage device according to claim 2, characterized in that the weighing conveyor (10) is fixed on a lateral side of the frame (1) and on the vertical structure (5), laterally and outside the side corresponding side of the chassis (1). 4.- Dispositif de stockage suivant l'une quelconque des revendications 1, 2 et 3, caractérisé par le fait que la partie supérieure de déversement (10a) du convoyeur peseur (10) est rendue mobile entre une position de service (10a) dans le prolongement de la partie restante du convoyeur et une position de transport (10′a) où cette partie d'extrémité est re­pliée pour diminuer la longueur hors tout du disposi­tif dans sa structure de transport sur route.4.- Storage device according to any one of claims 1, 2 and 3, characterized in that the upper discharge part (10a) of the weighing conveyor (10) is made movable between a service position (10a) in the extension of the remaining part of the conveyor and a transport position (10′a) where this end part is folded back to reduce the overall length of the device in its road transport structure. 5.- Dispositif de stockage suivant l'une quelconque des revendications 1 à 4, caractérisé par le fait que le châssis est solidaire d'une structure d'attelage (3) à l'une de ses extrémités longitudina­les et que ses roues de support (2) sont montées à son autre extrémité longitudinale, le dispositif étant ré­alisé sous forme d'une semi-remorque transportable grâce à un tracteur.5.- Storage device according to any one of claims 1 to 4, characterized in that the chassis is integral with a coupling structure (3) at one of its longitudinal ends and that its support wheels (2) are mounted at its other longitudinal end, the device being produced in the form of a semi-trailer transportable by a tractor. 6.- Dispositif suivant l'une quelconque des revendications 1 à 5, caractérisé par le fait que la ligne de trémies comporte quatre trémies (6).6.- Device according to any one of claims 1 to 5, characterized in that the line of hoppers comprises four hoppers (6).
EP88403187A 1987-12-23 1988-12-14 Apparatus for storing and handling granular material for road construction works Withdrawn EP0322283A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8718072 1987-12-23
FR8718072A FR2625146B1 (en) 1987-12-23 1987-12-23 AGGREGATE STORAGE AND HANDLING DEVICE FOR CONSTRUCTION SITES

Publications (1)

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EP0322283A1 true EP0322283A1 (en) 1989-06-28

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EP (1) EP0322283A1 (en)
FR (1) FR2625146B1 (en)

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FR2625146A1 (en) 1989-06-30

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