WO2003046288A1 - Machine for simultaneously spreading gravel and binder on the ground - Google Patents

Machine for simultaneously spreading gravel and binder on the ground Download PDF

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Publication number
WO2003046288A1
WO2003046288A1 PCT/FR2002/003874 FR0203874W WO03046288A1 WO 2003046288 A1 WO2003046288 A1 WO 2003046288A1 FR 0203874 W FR0203874 W FR 0203874W WO 03046288 A1 WO03046288 A1 WO 03046288A1
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WO
WIPO (PCT)
Prior art keywords
hopper
binder
machine
tank
storage
Prior art date
Application number
PCT/FR2002/003874
Other languages
French (fr)
Inventor
Pierre Chambard
Original Assignee
Chambard
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 Chambard filed Critical Chambard
Priority to AU2002352331A priority Critical patent/AU2002352331A1/en
Publication of WO2003046288A1 publication Critical patent/WO2003046288A1/en

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/12—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for distributing granular or liquid materials
    • E01C19/21—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for 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 present invention relates to a machine for continuous and simultaneous spreading of binder and pebbles on the ground, for making or repairing a floor.
  • the machine which is the subject of the invention is of the type comprising a mobile chassis, which supports:
  • a first hopper called storage, of large capacity, intended to receive and contain stones (gravel) to be spread;
  • a tank intended to receive and contain the binder (bitumen emulsion, in particular);
  • a second hopper called a regulation hopper, with a capacity substantially lower than that of the first hopper, also intended to receive and contain stones to be spread;
  • At least one binder ramp arranged transversely to the direction of advance of the machine, supplied with binder from said tank;
  • the machine is a motorized road assembly, composed of a tractor and a semi-trailer, on which are grouped, from front to back, the binder tank, the first and second hoppers, and the binder and pebble spreading booms.
  • the storage hopper has a "rolling" bottom (with rubber mat) capable of transferring the stones to the second hopper.
  • the binder tank has a cylindrical shape, with a horizontal axis, transverse to the (longitudinal) direction of travel (see Figure 1).
  • the present invention proposes to improve such a machine, in particular by increasing its compactness in an optimized manner, and by improving the capacities and ease of use.
  • An object of the invention in particular, is to allow easy supply of stones, and possible without interrupting the spreading operation, of the machine.
  • - Said binder tank seen from the side, has an approximately triangular contour, with rounded angles, which is complementary to the space located inside and at the base of the branches of said "W";
  • - Said conveyor comprises at least one conveyor belt;
  • Said conveyor belt extends from front to rear and from bottom to top under the rear face of the dihedral constituting the wall of said storage hopper, and is suitable for conveying gravel from an escape window cut in this wall, in the vicinity of the edge of the dihedral, in the upper part of the front face of the dihedral constituting the wall of said control hopper, and for continuously discharging them into the latter;
  • This machine comprises a pair of belt conveyors placed parallel, side by side;
  • Said dihedral shaped storage hopper is articulated around a horizontal and transverse axis located in the vicinity of its edge, means being provided for pivoting it upwards and forwards around this axis;
  • the machine comprises a second binder ramp, arranged parallel near said binder ramp, as well as a hot water spraying ramp, positioned in parallel, between these two binder ramps.
  • the mobile installation of continuous spreading of binder and pebbles on the ground, intended for making and / or repairing a floor comprises a machine as described above.
  • This installation is remarkable in that it includes a self-propelled vehicle - known as a transfer vehicle - provided at the front with a receiving hopper for stones which can be dumped there from a dump truck, and provided with a conveyor, such a conveyor belt, capable of conveying the pebbles of said hopper towards the rear of the vehicle, at a suitable height, so that, this transfer vehicle being interposed between the dump truck and the spreading machine, it ensures the supply of the latter with stones, these being poured downstream of the conveyor, and at the rear of the transfer vehicle, into the storage hopper of said spreading machine.
  • a self-propelled vehicle known as a transfer vehicle - provided at the front with a receiving hopper for stones which can be dumped there from a dump truck, and provided with a conveyor, such a conveyor belt, capable of conveying the pebbles of said hopper towards the rear of the vehicle, at a suitable height, so that, this transfer vehicle being interposed between the dump truck and the spreading machine, it ensures the supply of the latter with stones, these being
  • this transfer vehicle also comprises an insulated tank serving as a reserve for the binder.
  • the spreading machine is a trailer able to be coupled to this transfer vehicle, and to be towed by it.
  • FIG. 1 is a schematic perspective view of a first possible embodiment of the spreading machine (the front of which is directed to the right of the figure);
  • - Figure 2 is a side view, also schematic, of this machine (before this time directed to the left of the figure);
  • - Figure 3 is a top view of the machine, also very schematic, and partial, this figure being intended more particularly to illustrate the mode of transfer of stones from the first to the second hopper;
  • - Figure 4 is a view similar to that of Figure 2, illustrating the possibility of tilting forward of the storage hopper;
  • - Figure 5A is a view similar to that of Figure 4, illustrating a spreading operation;
  • Figure 5B is a view similar to that of Figure 5 A, showing the operation when the storage tank, almost empty, is tilted forward;
  • FIG. 6 shows, seen from the side, the transfer vehicle during the spreading operation during the supply period of the machine with stones;
  • - Figure 7 shows the installation during a spreading operation, when the machine is supplied with stones;
  • FIGS. 1 to 5 are views similar to that of Figure 2, showing a second possible embodiment of the machine.
  • Machine 1 illustrated in FIGS. 1 to 5 is a machine for continuous and simultaneous spreading of binder and pebbles - or gravel - on the ground, for making or repairing a floor.
  • the machine 1 is a vehicle of the semi-trailer type, comprising a chassis 10, mounted on two pairs of wheels 11, and of which the front part 100, forming a drawbar, is intended to be coupled to a towing vehicle.
  • This chassis 10 substantially horizontal, supports from the front to the rear, a first pebble hopper 2 - called storage - of large capacity, a binder tank 4, and a second pebble hopper 3 - called regulation -, whose capacity is significantly lower than that of the first hopper 2.
  • the volumes of the hoppers 2 and 3 are respectively 12 and 4 m 3 , while the tank 4 can contain 6000 liters of binder.
  • the overall length and width of the machine are in the "road" position, respectively, of the order of 11.00 m and 2.50 m.
  • the lengths of the hoppers 2 and 3 in the upper part, at their opening, are, respectively, of the order of 5 to 6 m and 2.50 m.
  • Its overall width is of the order of 4 meters in the "working" position, as a result of the transverse deployment of the lateral extensions of the flap and of the gravel counter-flap, and of the binder ramp.
  • the height of the hopper 2 relative to the upper plane of the chassis 10 is of the order of 1.70 m.
  • storage boxes 15 - 15 ' intended to receive brooms, shovels, and other various tools, which may be useful to operators.
  • a binder ramp 6 arranged transversely relative to the direction of advance of the machine, symbolized by the arrow H in FIG. 5; this ramp is supplied with binder from said tank 4 by means known to those skilled in the art, including a binder pump and a compressor.
  • This ramp is composed of a plurality of juxtaposed nozzles whose flow rate is controlled by pneumatic valves. Each active nozzle projects a jet of bituminous binder, liquid and hot, downwards, onto the roadway (arrows 60, Figure 5).
  • a vertical flap 14 forming a screen protects the wheels li from binder projections.
  • a device 5 of a type known per se adapted to ensure the extraction of stones from this hopper, and their distribution on the ground S, behind the binder ramp 6, when considering the direction of advance H of the machine on the road.
  • This device comprises a rotary extractor roller 50, of horizontal axis, driven by a suitable motor, and the direction of rotation of which is symbolized by the arrow i in FIG. 5A, a curved flap 51 inclined downwards and towards the front, the role of which is to distribute the flow of pebbles distributed by the roller in a homogeneous manner in the transverse direction, and a counter-flap 52 adapted to brake the pebbles during their fall.
  • a rotary paddle wheel 54 indebts the mass of stones, and regulates the extraction, while calibrating the thickness of the flow leaving the hopper 3 to reach the extractor roller 50.
  • the spreading width is controlled by a series of juxtaposed flaps and / or hatches arranged at the outlet of the hopper, just upstream of the rotary extractor roller.
  • a gateway 53 adapted to receive an operator. It is equipped with control means, in particular metering and spreading width.
  • the two hoppers 2 and 3 each have the approximate shape of a dihedral open upwards, the edge of which is oriented transversely and located downwards, at the level of the platform. chassis 10. They are joined at the top.
  • the inclined walls constituting the front and rear bottoms of the hopper 2 have been designated by the references 23 and 20. They form an angle whose value is respectively of the order of 40 and 25 degrees relative to the horizontal.
  • the corresponding front 30 and rear 31 walls of the hopper 3 are at right angles; they form, with respect to the horizontal, angles of approximately 40 and 50 degrees, respectively.
  • the rear wall of the hopper 3 is truncated, so as to have a vertical upper portion 32, which limits the overall dimensions of the machine.
  • Each hopper 2-3 has lateral flanks 200a, 200b, respectively 300a, 300b which are vertical.
  • the adjoining hopper walls 23-20 and 30-31 have a general "W" configuration.
  • the binder tank 4 is housed in the space located above the horizontal chassis platform 10, substantially at the level of the wheel train 11, between and below the two dihedral walls 20 and 30.
  • the tank 4 therefore fits, seen from the side, under and between the two interior branches of the "W" mentioned above.
  • the tank 4 has, seen from the side, a substantially triangular shape with rounded angles (see FIG. 2 in particular).
  • the wall of the tank which corresponds to the lower side of this triangle is situated in a substantially horizontal plane, and rests on the chassis 10.
  • the walls corresponding to the other two sides of the triangle are parallel and contiguous with the walls 20 and 30, respectively, below which they extend.
  • the tank 4 On the sides, the tank 4 is delimited and closed by vertical side walls.
  • the two hoppers 2, 3 and the binder tank 4 have metal walls, for example steel.
  • the wall of the tank 4, moreover, is insulated so as to contain the hot binder and keep it in the liquid state.
  • the binder, based on bitumen, is heated by means not shown, known per se.
  • the machine is equipped with a pair of conveyor belts (endless belts) 22a, 22b, which extend obliquely, side by side, under the hopper bottom wall 20. They are located symmetrically on either side other of the longitudinal plane of symmetry of the machine. Each belt is guided on upper rollers 220 and lower rollers 221 with a horizontal axis.
  • the upper roller 220 is rotated, at uniform speed - and preferably adjustable - by a suitable motor so that the upper section of the belt moves from bottom to top, towards the rear of the machine (arrows f).
  • the space between the upper strands of the two carpets is sufficient to allow the passage of a certain thickness of layer of pebbles which are collected at the bottom of the hopper by openings, or windows, 21 cut in the wall 20, at the plumb with the upstream part of the conveyors.
  • the belts 22 are for example flexible strips of synthetic material provided with transverse bars. Their width, for information, is of the order of 0.8 m and the length of each of their strands - back and forth - is between 5.5 m and 6.5 m for example.
  • one of the lateral and vertical sides of the binder tank 4 fits into the same vertical plane as the corresponding side walls of the hoppers 2 and 3.
  • the latter have the same width L, which determines the width of the machine.
  • the tank 4 has a width 1 substantially smaller than L, so that its opposite side is located inside the chassis relative to the hopper walls located on this side (at the top in FIG. 3). In this way, a free space is provided on one of the sides of the tank.
  • This equipment can consist of various devices useful for the operation of the machine, such as in particular, a heat engine, a hydraulic motor controlled by an automaton, a binder pump driven by this hydraulic motor, an electrical system for controlling the heating of the binder, a compressor and an air tank (for controlling the binder nozzle valves).
  • the hopper 2 is articulated at its base, in the vicinity of its dihedral edge, around a horizontal transverse axis Y- Y '.
  • This axis corresponds for example to the axis of the idler rollers 221, or is close to the latter.
  • Appropriate means such as a pair of hydraulic cylinders (not shown) for example, are provided to allow this hopper 2 to tilt up and forward (arrow g, FIG. 2).
  • This raised and advanced position of the hopper does not compromise the operation of the machine. On the contrary, it promotes the flow of stones which, at the end of emptying of the hopper, tend to remain resting on the wall 20 less inclined. These are thus forced to slide under the effect of gravity towards the windows 21, then to settle on the lifting belts 22, after having crossed said windows, in order to be transferred into the hopper 3 (see FIG. 5B) .
  • the storage hopper 2 is initially filled with a maximum volume of pebbles C1, and the regulation hopper 3 contains a certain "buffer" volume of pebbles C2.
  • Tank 4 is filled with binder.
  • the speed of movement is of the order of 1 m / s.
  • An appropriate control system ensures, during this advance of the machine 1, concomitantly, and in synchronism, the drive of the belts 22a - 22b, the rotation of the roller 50, and the supply of the binder ramp 6.
  • Ad hoc detector bodies are provided to trigger an alarm and / or stop the operation in the event of an anomaly.
  • the mass of pebbles C1 descends by gravity into the bottom of the hopper 2 and passes through the hopper bottom openings 21a, 21b, to deposit on the moving belts 22a, 22b. These convey the stones gradually, continuously, in the form of a thin C2 layer backwards and upwards.
  • this layer is approximately 5 cm.
  • These stones C2 are poured into the regulation hopper 3 so as to constitute a buffer mass C3 of substantially constant volume therein.
  • the rotary members 54 and 50 extract the pebbles, which flow successively on the flap 51 and on the flap 52, (layer C4) to distribute themselves homogeneously on the ground (layer C5), over the entire width d spreading desired by the operator.
  • a suitable deflector member (not shown), such as a dihedral with a longitudinally oriented edge and directed upwards, is advantageously mounted at the bottom of the storage hopper 2; located between the two discharge windows 21a, 21b, it channels the residue at the end of emptying towards these windows, promoting complete emptying.
  • the machine 1 is coupled to a special vehicle, such as that shown in FIG. 6, referenced 7, and is towed by the latter during the operation.
  • Vehicle 7, called transfer vehicle is a self-propelled truck, with chassis
  • the rear of the chassis 70 is equipped with a fifth wheel 74, suitable for the articulated coupling of the drawbar 100 of the machine 1.
  • the drawbar can pivot according to several degrees of freedom (ball joint) relative to the chassis 70 of the tractor.
  • This vehicle is equipped in the front part, just in front of and at the base of the cabin 700, with a hopper 71. This has a configuration similar to that of the storage hopper 2, but a substantially smaller volume.
  • a conveyor belt - or a pair of conveyor belts - 72 extending obliquely backwards and upwards, acting similarly to the belts 22 of the machine 1, allow) to transfer the pebbles from the hopper 71 into the hopper 2, when the machine 1 is towed by the vehicle 7.
  • the upward movement towards the rear of the upper strand of the belt 72 is symbolized by the arrow k in FIG. 6.
  • the downstream portion 72 ′ less inclined than the rest of the conveyor 72, optimally overlooks the front of the tilting hopper 2, allowing stones to be poured into it regardless of the degree of pivoting of this hopper 2, and even if the longitudinal axes of the tractor 7 and the towed machine do not are not aligned, which is the case when cornering.
  • the endless belt 72 is driven by suitable means, such as a hydraulic motor for example, at a continuous and uniform speed in relation to that of the belts 22.
  • Cutouts or lateral windows similar to windows 21 allow the pebbles to escape by gravity through the bottom of the hopper 71, and their fall onto the - or - the conveyor (s) 72.
  • the frame 70 supports a tank with heat-insulated binder 73, serving as a binder reserve.
  • the tank 73 seen from the side, has the shape of a right-angled triangle with rounded angles, registering in a minimal space between the cabin 700 and the harness 74, under the (or) carpet 72.
  • the hopper 71 is intended to receive stones from a truck
  • Binder dosage 1.2 kg / m 2 ;
  • This tank also heat-insulated, contains hot water under pressure.
  • This machine comprises two ramps with similar binder 6a, 6b, placed one in front of the other, at a small mutual distance.
  • an additional ramp 90 capable of projecting hot water to the ground. This is supplied to it from the reservoir 9 by an appropriate supply system (not shown). This machine makes it possible to implement the spreading process described in FR - A - 2 800 104, which can be referred to if necessary.
  • the storage hopper is pivotally mounted relative to the frame which supports it
  • the invention also covers the case of a machine of simpler design, in which this hopper 2 is fixedly mounted on the chassis 10.
  • the angle of inclination of the wall 20 is increased to allow complete emptying of the stones.
  • it is advantageously greater than 35 ° relative to the horizontal, for example of the order of 40 °.

Abstract

The invention concerns a machine comprising a mobile chassis bearing a storage hopper (2) for receiving and holding gravel, a tank (4) for binder, a regulating hopper (3), likewise for receiving and holding gravel, a transverse binder ramp (6), fed with binder from the tank (4), a device (5) for extracting gravel, located at the base and at the outlet of the regulating hopper (3) designed to spread the gravel on the ground (S), at the rear of the binder ramp (6), a conveyor (22) for transferring gravel from the storage hopper (2) into the regulating hopper (3). The machine is characterized in that said storage (2) and regulating (3) hoppers are adjacent and have each the general shape of a dihedral, whereof the opening faces upwards, and the line of intersection downwards, said ridge being transversely oriented, thereby providing their walls, viewed laterally, a global W-shape, and said binder tank (4) is housed in the space located inside and at the base of said W. Thus, the machine is very compact while having high storage capacity. The invention is useful for road works.

Description

MACHINE DΕPANDAGE SIMULTANE DE CAILLOUX ET DE LIANT SIMULTANEOUS SPREADING MACHINE OF STONE AND BINDER
SUR LE SOLON THE GROUND
La présente invention concerne une machine d'épandage continu et simultané de liant et de cailloux sur le sol, pour la confection ou la réparation d'une chaussée.The present invention relates to a machine for continuous and simultaneous spreading of binder and pebbles on the ground, for making or repairing a floor.
Elle concerne aussi une installation complète d'épandage, incluant une telle machine.It also relates to a complete spreading installation, including such a machine.
La machine qui fait l'objet de l'invention est du type comprenant un châssis mobile, lequel supporte :The machine which is the subject of the invention is of the type comprising a mobile chassis, which supports:
- une première trémie, dite de stockage, de grande capacité, destinée à recevoir et à contenir des cailloux (gravillons) à épandre ; - une citerne destinée à recevoir et contenir le liant (émulsion de bitume, notamment) ;- a first hopper, called storage, of large capacity, intended to receive and contain stones (gravel) to be spread; - a tank intended to receive and contain the binder (bitumen emulsion, in particular);
- une seconde trémie, dite de régulation, de capacité sensiblement inférieure à celle de la première trémie, également destinée à recevoir et à contenir des cailloux à épandre ; - au moins une rampe à liant disposée transversalement par rapport à la direction d'avancement de la machine, alimentée en liant depuis ladite citerne ;- A second hopper, called a regulation hopper, with a capacity substantially lower than that of the first hopper, also intended to receive and contain stones to be spread; - At least one binder ramp arranged transversely to the direction of advance of the machine, supplied with binder from said tank;
- un dispositif situé à la base et à la sortie de la trémie de régulation, qui est adapté pour assurer l'extraction des cailloux hors de cette trémie, et leur distribution au sol, à l'arrière de la rampe à liant, si on considère le sens d'avancement de la machine sur la chaussée ;- a device located at the base and at the outlet of the regulation hopper, which is adapted to ensure the extraction of stones from this hopper, and their distribution on the ground, behind the binder ramp, if considers the direction of travel of the machine on the road;
- un convoyeur apte à transférer des cailloux, au cours de l'opération d'épandage, de la trémie de stockage dans la trémie de régulation.- a conveyor capable of transferring pebbles, during the spreading operation, from the storage hopper into the regulation hopper.
L'état de la technique en la matière peut être illustré par le document FR- 2 538 014. Dans cette réalisation connue, la machine est un ensemble routier motorisé, composé d'un tracteur et d'une semi-remorque, sur laquelle sont regroupés, de l'avant vers l'arrière, la citerne à liant, les première et seconde trémies, et les rampes d'épandage de liant et de cailloux.The state of the art in this area can be illustrated by the document FR-2 538 014. In this known embodiment, the machine is a motorized road assembly, composed of a tractor and a semi-trailer, on which are grouped, from front to back, the binder tank, the first and second hoppers, and the binder and pebble spreading booms.
La trémie de stockage possède un fond "roulant" (à tapis caoutchouté) apte à transférer les cailloux vers la seconde trémie.The storage hopper has a "rolling" bottom (with rubber mat) capable of transferring the stones to the second hopper.
La citerne à liant a une forme cylindrique, d'axe horizontal, transversal par rapport à la direction (longitudinale) d'avancement (cf. figure 1). La présente invention se propose de perfectionner une telle machine, notamment en en augmentant la compacité de manière optimisée, et en améliorant les capacités et facilités d'usage. Un objectif de l'invention, en particulier, est de permettre un approvisionnement en cailloux facile, et possible sans interruption de l'opération d'épandage, de la machine.The binder tank has a cylindrical shape, with a horizontal axis, transverse to the (longitudinal) direction of travel (see Figure 1). The present invention proposes to improve such a machine, in particular by increasing its compactness in an optimized manner, and by improving the capacities and ease of use. An object of the invention, in particular, is to allow easy supply of stones, and possible without interrupting the spreading operation, of the machine.
Ceci pose évidemment des difficultés lorsque, comme dans l'objet du FR - 2 538 014 précité, la citerne à liant est située à l'avant de la trémie de stockage.This obviously poses difficulties when, as in the subject of the aforementioned FR - 2 538 014, the binder tank is located at the front of the storage hopper.
Les objectifs qui viennent d'être énoncés sont atteints, conformément à l'invention, grâce au fait que lesdites trémie de stockage et de régulation sont adjacentes et ont chacune la forme générale d'un dièdre, dont l'ouverture est tournée vers le haut, et l'arête vers le bas, cette arête étant orientée transversalement par rapport à la direction d'avancement de la machine, ce qui confère à leurs parois, vues de côté, l'allure générale d'un "W", ladite citerne à liant étant logée dans l'espace situé à l' intérieur et à la base des branches de ce "W". Par ailleurs, selon un certain nombre de caractéristiques possibles, mais non limitatives de l'invention :The objectives which have just been stated are achieved, in accordance with the invention, thanks to the fact that said storage and regulation hopper are adjacent and each have the general shape of a dihedral, the opening of which faces upwards. , and the edge down, this edge being oriented transversely to the direction of advance of the machine, which gives their walls, seen from the side, the general appearance of a "W", said tank with binder being housed in the space located inside and at the base of the branches of this "W". Furthermore, according to a certain number of possible, but not limiting, characteristics of the invention:
- Ladite citerne à liant, vue de côté, présente un contour approximativement triangulaire, à angles arrondis, qui s'inscrit complémentairement dans l'espace situé à l'intérieur et à la base des branches dudit "W" ; - Ledit convoyeur comprend au moins un transporteur à bande ;- Said binder tank, seen from the side, has an approximately triangular contour, with rounded angles, which is complementary to the space located inside and at the base of the branches of said "W"; - Said conveyor comprises at least one conveyor belt;
- Ledit transporteur à bande s'étend de l'avant vers l'arrière et de bas en haut sous la face arrière du dièdre constitutif de la paroi de ladite trémie de stockage, et est adapté pour acheminer les gravillons depuis une fenêtre d'échappement découpée dans cette paroi, au voisinage de l'arête du dièdre, en partie supérieure de la face avant du dièdre constitutif de la paroi de ladite trémie de régulation, et pour les déverser en continu dans cette dernière ;- Said conveyor belt extends from front to rear and from bottom to top under the rear face of the dihedral constituting the wall of said storage hopper, and is suitable for conveying gravel from an escape window cut in this wall, in the vicinity of the edge of the dihedral, in the upper part of the front face of the dihedral constituting the wall of said control hopper, and for continuously discharging them into the latter;
- Cette machine comporte une paire de transporteurs à bande placés parallèlement, côte à côte ;- This machine comprises a pair of belt conveyors placed parallel, side by side;
- Ladite trémie de stockage en forme de dièdre est articulée autour d'un axe horizontal et transversal situé au voisinage de son arête, des moyens étant prévus pour la faire pivoter vers le haut et vers l'avant autour de cet axe ;- Said dihedral shaped storage hopper is articulated around a horizontal and transverse axis located in the vicinity of its edge, means being provided for pivoting it upwards and forwards around this axis;
- La machine comporte une seconde rampe à liant, disposée parallèlement à proximité de ladite rampe à liant, ainsi qu'une rampe de projection d'eau chaude, positionnée parallèlement, entre ces deux rampes à liant. L'installation mobile d'épandage en continu de liant et de cailloux sur le sol, destinée à la confection et/ou à la réparation d'une chaussée, qui est également couverte par la présente invention, comporte une machine telle que décrite ci-dessus.- The machine comprises a second binder ramp, arranged parallel near said binder ramp, as well as a hot water spraying ramp, positioned in parallel, between these two binder ramps. The mobile installation of continuous spreading of binder and pebbles on the ground, intended for making and / or repairing a floor, which is also covered by the present invention, comprises a machine as described above.
Cette installation est remarquable en ce qu'elle comprend un véhicule automoteur - dit de transfert - muni à l'avant d'une trémie réceptrice pour des cailloux qui peuvent y être déversés depuis un camion-benne, et pourvu d'un convoyeur, tel qu'un tapis transporteur, apte à acheminer les cailloux de ladite trémie vers l'arrière du véhicule, à une hauteur convenable, de telle sorte que, ce véhicule de transfert étant intercalé entre le camion-benne et la machine d'épandage, il assure l'alimentation de cette dernière en cailloux, ceux-ci étant déversés en partie aval du convoyeur, et à l'arrière du véhicule de transfert, dans la trémie de stockage de ladite machine d'épandage.This installation is remarkable in that it includes a self-propelled vehicle - known as a transfer vehicle - provided at the front with a receiving hopper for stones which can be dumped there from a dump truck, and provided with a conveyor, such a conveyor belt, capable of conveying the pebbles of said hopper towards the rear of the vehicle, at a suitable height, so that, this transfer vehicle being interposed between the dump truck and the spreading machine, it ensures the supply of the latter with stones, these being poured downstream of the conveyor, and at the rear of the transfer vehicle, into the storage hopper of said spreading machine.
Avantageusement, ce véhicule de transfert comporte, en outre, une citerne calorifugée servant de réserve pour le liant.Advantageously, this transfer vehicle also comprises an insulated tank serving as a reserve for the binder.
De préférence, la machine d'épandage est une remorque apte à être attelée à ce véhicule de transfert, et à être tractée par celui-ci.Preferably, the spreading machine is a trailer able to be coupled to this transfer vehicle, and to be towed by it.
D'autres caractéristiques et avantages de l'invention apparaîtront de la description qui va maintenant en être faite, en référence aux dessins annexés, qui en représentent, à titre indicatif mais non limitatif, des modes de réalisation possibles. Sur ces dessins : - La figure 1 est une vue schématique, en perspective, d'un premier mode de réalisation possible de la machine d'épandage (dont l'avant est dirigé vers la droite de la figure) ;Other characteristics and advantages of the invention will emerge from the description which will now be made of it, with reference to the appended drawings, which show, by way of indication but not limitation, possible embodiments. In these drawings: - Figure 1 is a schematic perspective view of a first possible embodiment of the spreading machine (the front of which is directed to the right of the figure);
- La figure 2 est une vue de côté, également schématique, de cette machine (avant cette fois dirigé vers la gauche de la figure) ; - La figure 3 est une vue de dessus de la machine, également très schématique, et partielle, cette figure étant destinée plus particulièrement à illustrer le mode de transfert des cailloux de la première à la seconde trémie ;- Figure 2 is a side view, also schematic, of this machine (before this time directed to the left of the figure); - Figure 3 is a top view of the machine, also very schematic, and partial, this figure being intended more particularly to illustrate the mode of transfer of stones from the first to the second hopper;
- La figure 4 est une vue similaire à celle de la figure 2, illustrant la possibilité de basculement vers l'avant de la trémie de stockage ; - La figure 5A est une vue similaire à celle de la figure 4, illustrant une opération d'épandage ;- Figure 4 is a view similar to that of Figure 2, illustrating the possibility of tilting forward of the storage hopper; - Figure 5A is a view similar to that of Figure 4, illustrating a spreading operation;
- La figure 5B est une vue analogue à celle de la figure 5 A, montrant l'opération lorsque la cuve de stockage, presque vidée, est basculée vers l'avant ;- Figure 5B is a view similar to that of Figure 5 A, showing the operation when the storage tank, almost empty, is tilted forward;
- La figure 6 représente, vu de côté, le véhicule de transfert en cours d'opération d'épandage en période d'approvisionnement de la machine en cailloux ; - La figure 7 représente l'installation au cours d'une opération d'épandage, en période d'approvisionnement de la machine en cailloux ;- Figure 6 shows, seen from the side, the transfer vehicle during the spreading operation during the supply period of the machine with stones; - Figure 7 shows the installation during a spreading operation, when the machine is supplied with stones;
- La figure 8 est une vue similaire à celle de la figure 2, représentant un second mode de réalisation possible de la machine. La machine 1, illustrée par les figures 1 à 5, est une machine d'épandage continu et simultané de liant et de cailloux - ou gravillons - sur le sol, pour la confection ou la réparation d'une chaussée.- Figure 8 is a view similar to that of Figure 2, showing a second possible embodiment of the machine. Machine 1, illustrated in FIGS. 1 to 5, is a machine for continuous and simultaneous spreading of binder and pebbles - or gravel - on the ground, for making or repairing a floor.
Sur les figures, le sol - supposé horizontal - est référencé S. La machine 1 est un véhicule du type semi-remorque, comprenant un châssis 10, monté sur deux paires de roues 11, et dont la partie avant 100, formant timon, est destinée à être attelée à un véhicule tracteur.In the figures, the ground - assumed to be horizontal - is referenced S. The machine 1 is a vehicle of the semi-trailer type, comprising a chassis 10, mounted on two pairs of wheels 11, and of which the front part 100, forming a drawbar, is intended to be coupled to a towing vehicle.
Ce châssis 10, sensiblement horizontal, supporte de l'avant vers l'arrière, une première trémie à cailloux 2 - dite de stockage -, de grande capacité, une citerne à liant 4, et une seconde trémie à cailloux 3 - dite de régulation -, dont la capacité est sensiblement inférieure à celle de la première trémie 2.This chassis 10, substantially horizontal, supports from the front to the rear, a first pebble hopper 2 - called storage - of large capacity, a binder tank 4, and a second pebble hopper 3 - called regulation -, whose capacity is significantly lower than that of the first hopper 2.
A titre indicatif, les volumes des trémies 2 et 3 sont respectivement de 12 et de 4 m3, tandis que la citerne 4 peut contenir 6 000 litres de liant.As an indication, the volumes of the hoppers 2 and 3 are respectively 12 and 4 m 3 , while the tank 4 can contain 6000 liters of binder.
Les longueur et largeur hors tout de la machine sont respectivement en position "route" de l'ordre de 11,00 m et de 2,50 m. Les longueurs des trémies 2 et 3 en partie supérieure, au niveau de leur ouverture, sont, respectivement, de l'ordre de 5 à 6 m et 2,50 m. Sa largeur hors tout est de l'ordre de 4 mètres en position "travail", par suite du déploiement transversal des extensions latérales de la bavette et de la contre-bavette du gravillonneur, et de la rampe à liant. La hauteur de la trémie 2 par rapport au plan supérieur du châssis 10 est de l'ordre de 1,70 m.The overall length and width of the machine are in the "road" position, respectively, of the order of 11.00 m and 2.50 m. The lengths of the hoppers 2 and 3 in the upper part, at their opening, are, respectively, of the order of 5 to 6 m and 2.50 m. Its overall width is of the order of 4 meters in the "working" position, as a result of the transverse deployment of the lateral extensions of the flap and of the gravel counter-flap, and of the binder ramp. The height of the hopper 2 relative to the upper plane of the chassis 10 is of the order of 1.70 m.
Une paire de béquilles télescopiques 13 montées sous le châssis 10, en avant des roues 11 permet de maintenir le châssis en position horizontale lorsque la machine est au repos. Leurs pieds d'appui au sol sont relevés, de façon à être escamotés, avant toute opération d'épandage.A pair of telescopic crutches 13 mounted under the chassis 10, in front of the wheels 11 keeps the chassis in a horizontal position when the machine is at rest. Their feet on the ground are raised, so as to be retracted, before any spreading operation.
De chaque côté du châssis sont prévus des coffres de rangement 15 - 15', destinés à recevoir des balais, pelles, et autres outils divers, susceptibles d'être utiles aux opérateurs.On each side of the chassis are provided storage boxes 15 - 15 ', intended to receive brooms, shovels, and other various tools, which may be useful to operators.
A l'arrière de la machine 1, en partie basse du châssis 10, est fixée une rampe à liant 6, disposée transversalement par rapport à la direction d'avancement de la machine, symbolisée par la flèche H sur la figure 5 ; cette rampe est alimentée en liant depuis ladite citerne 4 par des moyens connus de l'homme du métier, incluant une pompe à liant et un compresseur. Cette rampe est composée d'une pluralité de buses juxtaposées dont le débit est contrôlé par des clapets pneumatiques. Chaque buse active projette un jet de liant bitumineux, liquide et chaud, vers le bas, sur la chaussée (flèches 60, figure 5).At the rear of the machine 1, in the lower part of the chassis 10, is fixed a binder ramp 6, arranged transversely relative to the direction of advance of the machine, symbolized by the arrow H in FIG. 5; this ramp is supplied with binder from said tank 4 by means known to those skilled in the art, including a binder pump and a compressor. This ramp is composed of a plurality of juxtaposed nozzles whose flow rate is controlled by pneumatic valves. Each active nozzle projects a jet of bituminous binder, liquid and hot, downwards, onto the roadway (arrows 60, Figure 5).
Une bavette verticale 14 formant écran met les roues li a l'abri des projections de liant.A vertical flap 14 forming a screen protects the wheels li from binder projections.
Toujours à l'arrière de la machine 1, à la base et en sortie de la trémie de régulation 3, est installé un dispositif 5 de type connu en soi, adapté pour assurer l'extraction des cailloux hors de cette trémie, et leur distribution au sol S, à l'arrière de la rampe à liant 6, lorsqu'on considère le sens d'avancement H de la machine sur la chaussée.Still at the rear of the machine 1, at the base and at the outlet of the regulation hopper 3, is installed a device 5 of a type known per se, adapted to ensure the extraction of stones from this hopper, and their distribution on the ground S, behind the binder ramp 6, when considering the direction of advance H of the machine on the road.
Ce dispositif comprend un rouleau extracteur rotatif 50, d'axe horizontal, mû par un moteur approprié, et dont le sens de rotation est symbolisé par la flèche i sur la figure 5 A, une bavette galbée 51 inclinée vers le bas et vers l'avant, dont le rôle est de répartir de manière homogène le flux de cailloux distribués par le rouleau selon la direction transversale, et une contre-bavette 52 adaptée pour freiner les cailloux au cours de leur chute. Une roue à palettes rotative 54 endette la masse de cailloux, et régularise l'extraction, tout en calibrant l'épaisseur du flux sortant de la trémie 3 pour parvenir au rouleau extracteur 50.This device comprises a rotary extractor roller 50, of horizontal axis, driven by a suitable motor, and the direction of rotation of which is symbolized by the arrow i in FIG. 5A, a curved flap 51 inclined downwards and towards the front, the role of which is to distribute the flow of pebbles distributed by the roller in a homogeneous manner in the transverse direction, and a counter-flap 52 adapted to brake the pebbles during their fall. A rotary paddle wheel 54 indebts the mass of stones, and regulates the extraction, while calibrating the thickness of the flow leaving the hopper 3 to reach the extractor roller 50.
La largeur d'épandage est contrôlée par une série de volets et/ou de trappes juxtaposées disposées en sortie de trémie, juste en amont du rouleau extracteur rotatif.The spreading width is controlled by a series of juxtaposed flaps and / or hatches arranged at the outlet of the hopper, just upstream of the rotary extractor roller.
Des systèmes de ce genre sont bien connus en soi, par exemple par les documents FR - 2 528 085, FR - 2 576 336 et FR - 2 647 131, auxquels on pourra se reporter au besoin.Systems of this kind are well known per se, for example from the documents FR - 2 528 085, FR - 2 576 336 and FR - 2 647 131, to which reference may be made if necessary.
Ils sont susceptibles d'équiper la présente machine.They are likely to equip this machine.
Tout à l'arrière de la machine est montée une passerelle 53 adaptée pour recevoir un opérateur. Elle est équipée de moyens de commande, notamment du dosage et de la largeur d'épandage.At the very back of the machine is mounted a gateway 53 adapted to receive an operator. It is equipped with control means, in particular metering and spreading width.
Selon une caractéristique essentielle de l'invention, les deux trémies 2 et 3 ont chacune la forme approximative d'un dièdre ouvert vers le haut, dont l'arête est orientée transversalement et située vers le bas, au niveau de la plate-forme de châssis 10. Elles sont accolées en partie supérieure. On a désigné par les références 23 et 20 les parois inclinées constitutives des fonds avant et arrière de la trémie 2. Elles forment un angle dont la valeur est respectivement de l'ordre de 40 et de 25 degrés par rapport à l'horizontale.According to an essential characteristic of the invention, the two hoppers 2 and 3 each have the approximate shape of a dihedral open upwards, the edge of which is oriented transversely and located downwards, at the level of the platform. chassis 10. They are joined at the top. The inclined walls constituting the front and rear bottoms of the hopper 2 have been designated by the references 23 and 20. They form an angle whose value is respectively of the order of 40 and 25 degrees relative to the horizontal.
Les parois correspondantes avant 30 et arrière 31 de la trémie 3 sont à angle droit ; elles forment, par rapport à l'horizontale, des angles d'environ 40 et 50 degrés, respectivement.The corresponding front 30 and rear 31 walls of the hopper 3 are at right angles; they form, with respect to the horizontal, angles of approximately 40 and 50 degrees, respectively.
Ces valeurs sont choisies pour permettre un bon écoulement des cailloux vers le fond de chaque trémie.These values are chosen to allow a good flow of stones towards the bottom of each hopper.
La paroi arrière de la trémie 3 est tronquée, de manière à présenter une portion supérieure verticale 32, qui limite l'encombrement en longueur de la machine.The rear wall of the hopper 3 is truncated, so as to have a vertical upper portion 32, which limits the overall dimensions of the machine.
Chaque trémie 2-3 possède des flancs latéraux 200a, 200b, respectivement 300a, 300b qui sont verticaux.Each hopper 2-3 has lateral flanks 200a, 200b, respectively 300a, 300b which are vertical.
Vues de côté, les parois de trémie accolées 23-20 et 30-31 ont une configuration générale en forme de "W".Viewed from the side, the adjoining hopper walls 23-20 and 30-31 have a general "W" configuration.
Selon une autre caractéristique essentielle de l'invention, la citerne à liant 4 est logée dans l'espace situé au-dessus de la plate-forme de châssis horizontale 10, sensiblement au niveau du train de roues 11, entre et en dessous les deux parois de dièdre 20 et 30. La citerne 4 s'inscrit donc, vue de côté, sous et entre les deux branches intérieures du " W" susmentionné.According to another essential characteristic of the invention, the binder tank 4 is housed in the space located above the horizontal chassis platform 10, substantially at the level of the wheel train 11, between and below the two dihedral walls 20 and 30. The tank 4 therefore fits, seen from the side, under and between the two interior branches of the "W" mentioned above.
Afin d'occuper au mieux l'espace disponible en cet endroit et, corrélativement, d'optimiser la compacité de la machine, la citerne 4 présente, vue de côté, une forme sensiblement triangulaire à angle arrondis (voir figure 2 notamment).In order to best occupy the space available at this location and, correlatively, to optimize the compactness of the machine, the tank 4 has, seen from the side, a substantially triangular shape with rounded angles (see FIG. 2 in particular).
La paroi de la citerne qui correspond au côté inférieur de ce triangle est située dans un plan sensiblement horizontal, et repose sur le châssis 10.The wall of the tank which corresponds to the lower side of this triangle is situated in a substantially horizontal plane, and rests on the chassis 10.
Les parois correspondant aux deux autres côtés du triangle sont parallèles et contiguës aux parois 20 et 30, respectivement, en dessous desquelles elles s'étendent.The walls corresponding to the other two sides of the triangle are parallel and contiguous with the walls 20 and 30, respectively, below which they extend.
Sur les côtés, la citerne 4 est délimitée et fermée par des parois latérales verticales.On the sides, the tank 4 is delimited and closed by vertical side walls.
Les deux trémies 2, 3 et la citerne à liant 4 ont des parois métalliques, par exemple en acier. La paroi de la citerne 4, de plus, est calorifugée de manière à contenir le liant chaud et le conserver à l'état liquide. Le chauffage du liant, à base de bitume, est assuré par des moyens non représentés, connus en soi. La machine est équipée d'une paire de transporteurs à tapis mobile (bandes sans fin) 22a, 22b, qui s'étendent obliquement, côte à côte, sous la paroi de fond de trémie 20. Ils sont situés symétriquement de part et d'autre du plan de symétrie longitudinal de la machine. Chaque tapis est guidé sur des rouleaux supérieur 220 et inférieur 221 d'axe horizontal. Le rouleau supérieur 220 est entraîné en rotation, à vitesse uniforme - et de préférence réglable - par un moteur approprié de sorte que le brin supérieur du tapis se déplace de bas en haut, vers l'arrière de la machine (flèches f). L'espace entre les brins supérieurs des deux tapis est suffisant pour autoriser le passage d'une certaine épaisseur de couche de cailloux qui sont collectés au fond de la trémie par des ouvertures, ou fenêtres, 21 découpées dans la paroi 20, à l'aplomb de la partie amont des transporteurs.The two hoppers 2, 3 and the binder tank 4 have metal walls, for example steel. The wall of the tank 4, moreover, is insulated so as to contain the hot binder and keep it in the liquid state. The binder, based on bitumen, is heated by means not shown, known per se. The machine is equipped with a pair of conveyor belts (endless belts) 22a, 22b, which extend obliquely, side by side, under the hopper bottom wall 20. They are located symmetrically on either side other of the longitudinal plane of symmetry of the machine. Each belt is guided on upper rollers 220 and lower rollers 221 with a horizontal axis. The upper roller 220 is rotated, at uniform speed - and preferably adjustable - by a suitable motor so that the upper section of the belt moves from bottom to top, towards the rear of the machine (arrows f). The space between the upper strands of the two carpets is sufficient to allow the passage of a certain thickness of layer of pebbles which are collected at the bottom of the hopper by openings, or windows, 21 cut in the wall 20, at the plumb with the upstream part of the conveyors.
Les tapis 22 sont par exemple des bandes souples en matière synthétique munies de barrettes transversales. Leur largeur, à titre indicatif, est de l'ordre de 0,8 m et la longueur de chacun de leurs brins - aller et retour - est comprise entre 5,5 m et 6,5 m par exemple.The belts 22 are for example flexible strips of synthetic material provided with transverse bars. Their width, for information, is of the order of 0.8 m and the length of each of their strands - back and forth - is between 5.5 m and 6.5 m for example.
Leur extrémité aval, qui correspond au rouleau moteur 220, surplombe l'entrée de la trémie 3, juste au-dessus du bord supérieur de la paroi 30.Their downstream end, which corresponds to the drive roller 220, overhangs the inlet of the hopper 3, just above the upper edge of the wall 30.
On notera que l'un des flancs latéraux et verticaux de la citerne à liant 4 s'inscrit dans le même plan vertical que les parois latérales correspondantes des trémies 2 et 3. Ces dernières ont la même largeur L, qui détermine la largeur de la machine.It will be noted that one of the lateral and vertical sides of the binder tank 4 fits into the same vertical plane as the corresponding side walls of the hoppers 2 and 3. The latter have the same width L, which determines the width of the machine.
Cependant, la citerne 4 a une largeur 1 sensiblement plus faible que L, si bien que son flanc opposé est situé à l'intérieur du châssis par rapport aux parois de trémie situées de ce côté (en haut sur la figure 3). De la sorte est ménagé sur l'un des côtés de la citerne un espace libreHowever, the tank 4 has a width 1 substantially smaller than L, so that its opposite side is located inside the chassis relative to the hopper walls located on this side (at the top in FIG. 3). In this way, a free space is provided on one of the sides of the tank.
E servant à loger différents équipements 16, qui sont fixés sur la zone latérale de châssis 101 se trouvant ainsi dégagée (voir figure 1).E being used to house various pieces of equipment 16, which are fixed on the lateral zone of chassis 101 thus being released (see FIG. 1).
Ces équipements peuvent consister en différents appareils utiles au fonctionnement de la machine, tels que notamment, un moteur thermique, un moteur hydraulique piloté par automate, une pompe à liant entraînée par ce moteur hydraulique, un système électrique de commande du chauffage du liant, un compresseur et un réservoir d'air (pour le pilotage des clapets de buses à liant).This equipment can consist of various devices useful for the operation of the machine, such as in particular, a heat engine, a hydraulic motor controlled by an automaton, a binder pump driven by this hydraulic motor, an electrical system for controlling the heating of the binder, a compressor and an air tank (for controlling the binder nozzle valves).
Ils sont avantageusement recouverts d'un capot protecteur.They are advantageously covered with a protective cover.
Dans le mode de réalisation illustré, la trémie 2 est articulée à sa base, au voisinage de son arête de dièdre, autour d'un axe transversal horizontal Y- Y'. Cet axe correspond par exemple à l'axe des rouleaux de renvoi 221, ou est proche de ce dernier.In the illustrated embodiment, the hopper 2 is articulated at its base, in the vicinity of its dihedral edge, around a horizontal transverse axis Y- Y '. This axis corresponds for example to the axis of the idler rollers 221, or is close to the latter.
Des moyens appropriés, tels qu'une paire de vérins hydrauliques (non représentés) par exemple, sont prévus pour permettre de faire basculer cette trémie 2 vers le haut et vers l'avant (flèche g, figure 2). Cette position relevée et avancée de la trémie ne compromet pas le fonctionnement de la machine. Au contraire, il favorise l'écoulement des cailloux qui, en fin de vidage de la trémie, ont tendance à rester reposer sur la paroi 20 moins inclinée. Ceux-ci sont ainsi forcés de glisser sous l'effet de la gravité vers les fenêtres 21, puis de se déposer sur les tapis élévateurs 22, après avoir traversé lesdites fenêtres, afin d'être transférés dans la trémie 3 (voir figure 5B).Appropriate means, such as a pair of hydraulic cylinders (not shown) for example, are provided to allow this hopper 2 to tilt up and forward (arrow g, FIG. 2). This raised and advanced position of the hopper does not compromise the operation of the machine. On the contrary, it promotes the flow of stones which, at the end of emptying of the hopper, tend to remain resting on the wall 20 less inclined. These are thus forced to slide under the effect of gravity towards the windows 21, then to settle on the lifting belts 22, after having crossed said windows, in order to be transferred into the hopper 3 (see FIG. 5B) .
En nous référant plus particulièrement aux figures 5A et 5B, nous allons maintenant expliquer comment s'opère l'épandage simultané et synchrone de cailloux et de liant sur un sol S, lequel consiste en une chaussée à confectionner ou à réparer.Referring more particularly to FIGS. 5A and 5B, we will now explain how the simultaneous and synchronous spreading of pebbles and binder takes place on a floor S, which consists of a roadway to be made or repaired.
On suppose que, la béquille 13 étant relevée, en position inactive, la machine est attelée et tractée par un véhicule moteur approprié, vers la gauche des figures (flèche H).It is assumed that, the stand 13 being raised, in the inactive position, the machine is coupled and towed by an appropriate motor vehicle, to the left of the figures (arrow H).
La trémie de stockage 2 est initialement remplie d'un volume maximal de cailloux Cl, et la trémie de régulation 3 contient un certain volume "tampon" de cailloux C2.The storage hopper 2 is initially filled with a maximum volume of pebbles C1, and the regulation hopper 3 contains a certain "buffer" volume of pebbles C2.
La citerne 4 est remplie de liant.Tank 4 is filled with binder.
A titre indicatif, la vitesse de déplacement est de l'ordre de 1 m/s.As an indication, the speed of movement is of the order of 1 m / s.
Un système de commande approprié assure, au cours de cette avance de la machine 1, concomitamment, et en synchronisme, l'entraînement des tapis 22a - 22b, la rotation du rouleau 50, et l'alimentation de la rampe à liant 6.An appropriate control system ensures, during this advance of the machine 1, concomitantly, and in synchronism, the drive of the belts 22a - 22b, the rotation of the roller 50, and the supply of the binder ramp 6.
L'opération est contrôlée par une personne (non représentée) qui se trouve sur la plate-forme de passerelle 53. Celle-ci contrôle aussi, le cas échéant, la largeur d'épandage. Des organes détecteurs ad hoc sont prévus pour déclencher une alarme et/ou arrêter l'opération en cas d'anomalie.The operation is controlled by a person (not shown) who is on the gangway platform 53. This platform also controls, if necessary, the spreading width. Ad hoc detector bodies are provided to trigger an alarm and / or stop the operation in the event of an anomaly.
La masse de cailloux Cl descend par gravité dans le fond de la trémie 2 et traverse les ouvertures de fond de trémie 21a, 21b, pour se déposer sur les tapis mobiles 22a, 22b. Ceux-ci acheminent les cailloux progressivement, en continu, sous forme d'une couche C2 de faible épaisseur vers l'arrière et vers le haut.The mass of pebbles C1 descends by gravity into the bottom of the hopper 2 and passes through the hopper bottom openings 21a, 21b, to deposit on the moving belts 22a, 22b. These convey the stones gradually, continuously, in the form of a thin C2 layer backwards and upwards.
A titre indicatif, l'épaisseur de cette couche est de 5 cm environ. Ces cailloux C2 sont déversés dans la trémie de régulation 3 de manière à y constituer une masse tampon C3 de volume sensiblement constant.As an indication, the thickness of this layer is approximately 5 cm. These stones C2 are poured into the regulation hopper 3 so as to constitute a buffer mass C3 of substantially constant volume therein.
Les organes rotatifs 54 et 50 en extraient les cailloux, qui s'écoulent successivement sur la bavette 51 et sur la contre-bavette 52, (couche C4) pour se répartir au sol de manière homogène (couche C5), sur toute la largeur d'épandage souhaitée par l'opérateur.The rotary members 54 and 50 extract the pebbles, which flow successively on the flap 51 and on the flap 52, (layer C4) to distribute themselves homogeneously on the ground (layer C5), over the entire width d spreading desired by the operator.
Préalablement, juste devant cet épandage, les buses de la rampe 6 ont projeté, sous forme de jets 60 dirigés vers le bas, une fine couche de liant L dans laquelle viennent se déposer les cailloux. Lorsque la trémie de stockage 2 est presque vide, la masse de cailloux résiduelle Cl, qui repose sur la paroi de fond de plus faible pente 23, peine à descendre.Beforehand, just in front of this spreading, the nozzles of the ramp 6 projected, in the form of jets 60 directed downwards, a thin layer of binder L in which the pebbles are deposited. When the storage hopper 2 is almost empty, the residual mass of stones Cl, which rests on the bottom wall of the slightest slope 23, struggles to descend.
C'est alors qu'est commandé, soit automatiquement, soit manuellement, le basculement g de cette trémie vers l'avant (figure 5B). L'augmentation de l'inclinaison de la paroi arrière 20 assure ainsi la descente des cailloux Cl contenus dans la trémie 2, jusqu'au du vidage complet de cette dernière. Un organe déflecteur approprié (non représenté), tel qu'un dièdre à arête orientée longitudinalement, et dirigée vers le haut, est avantageusement monté au fond de la trémie de stockage 2 ; situé entre les deux fenêtres d'évacuation 21a, 21b, il canalise les résidus de fin de vidage vers ces fenêtres, favorisant le vidage complet.It is then that is controlled, either automatically or manually, the tilting g of this hopper forwards (FIG. 5B). The increase in the inclination of the rear wall 20 thus ensures the descent of the stones C1 contained in the hopper 2, until the complete emptying of the latter. A suitable deflector member (not shown), such as a dihedral with a longitudinally oriented edge and directed upwards, is advantageously mounted at the bottom of the storage hopper 2; located between the two discharge windows 21a, 21b, it channels the residue at the end of emptying towards these windows, promoting complete emptying.
Avantageusement, la machine 1 est attelée à un véhicule spécial, tel que celui représenté sur la figure 6, référencé 7, et est tracté par ce dernier durant l'opération. Le véhicule 7, dit de transfert, est un camion automoteur, à châssisAdvantageously, the machine 1 is coupled to a special vehicle, such as that shown in FIG. 6, referenced 7, and is towed by the latter during the operation. Vehicle 7, called transfer vehicle, is a self-propelled truck, with chassis
70 monté sur roues 701, 702, comportant une cabine de conduite 700.70 mounted on wheels 701, 702, comprising a driving cabin 700.
L'arrière du châssis 70 est équipé d'une sellette 74, adaptée à l'attelage articulé du timon 100 de la machine 1. Le timon peut pivoter selon plusieurs degrés de liberté (rotule) par rapport au châssis 70 du tracteur. Ce véhicule est équipé en partie avant, juste devant et à la base de la cabine 700, d'une trémie 71. Celle-ci a une configuration analogue à celle de la trémie de stockage 2, mais un volume sensiblement inférieur.The rear of the chassis 70 is equipped with a fifth wheel 74, suitable for the articulated coupling of the drawbar 100 of the machine 1. The drawbar can pivot according to several degrees of freedom (ball joint) relative to the chassis 70 of the tractor. This vehicle is equipped in the front part, just in front of and at the base of the cabin 700, with a hopper 71. This has a configuration similar to that of the storage hopper 2, but a substantially smaller volume.
Elle a la forme générale d'un dièdre ouvert vers le haut, d'arête inférieure horizontale et transversale ; elle est fermée sur les côtés par des cloisons verticales. Un tapis transporteur - ou une paire de tapis transporteurs - 72, s'étendant obliquement vers l'arrière et vers le haut, agissant de manière similaire aux tapis 22 de la machine 1, permettent) de transférer les cailloux de la trémie 71 dans la trémie 2, lorsque la machine 1 est tractée par le véhicule 7. Le mouvement ascendant vers l'arrière du brin supérieur du tapis 72 est symbolisé par la flèche k sur la figure 6. La portion aval 72', moins inclinée que le reste du transporteur 72, surplombe de manière optimisée l'avant de la trémie basculante 2, permettant d'y déverser des cailloux quel que soit le degré de pivotement de cette trémie 2, et même si les axes longitudinaux du tracteur 7 et de la machine remorquée ne sont pas alignés, ce qui est le cas dans les virages.It has the general shape of a dihedral open towards the top, of horizontal and transverse lower edge; it is closed on the sides by vertical partitions. A conveyor belt - or a pair of conveyor belts - 72, extending obliquely backwards and upwards, acting similarly to the belts 22 of the machine 1, allow) to transfer the pebbles from the hopper 71 into the hopper 2, when the machine 1 is towed by the vehicle 7. The upward movement towards the rear of the upper strand of the belt 72 is symbolized by the arrow k in FIG. 6. The downstream portion 72 ′, less inclined than the rest of the conveyor 72, optimally overlooks the front of the tilting hopper 2, allowing stones to be poured into it regardless of the degree of pivoting of this hopper 2, and even if the longitudinal axes of the tractor 7 and the towed machine do not are not aligned, which is the case when cornering.
Il est par exemple prévu une paire de transporteurs parallèles 72 disposés de chaque côté de la cabine 700, celle-ci étant alors située centrée sur le châssis 70, tout en ayant une largeur nettement plus faible que ce dernier, afin de présenter des espaces de dégagement latéraux suffisants pour le passage des transporteurs.It is for example provided a pair of parallel conveyors 72 arranged on each side of the cabin 700, the latter then being located centered on the chassis 70, while having a width significantly smaller than the latter, in order to present spaces of sufficient lateral clearance for the passage of conveyors.
Le - ou les- tapis sans fin 72 sont entraînés par des moyens appropriés, tels qu'un moteur hydraulique par exemple, à une vitesse continue et uniforme en rapport avec celle des tapis 22.The endless belt 72 is driven by suitable means, such as a hydraulic motor for example, at a continuous and uniform speed in relation to that of the belts 22.
Des découpes ou fenêtres latérales similaires aux fenêtres 21 autorisent l'échappement des cailloux par gravité à travers le fond de la trémie 71, et leur chute sur le - ou les - transporteur(s) 72.Cutouts or lateral windows similar to windows 21 allow the pebbles to escape by gravity through the bottom of the hopper 71, and their fall onto the - or - the conveyor (s) 72.
De préférence, le châssis 70 supporte une citerne à liant calorifugée 73, servant de réserve à liant.Preferably, the frame 70 supports a tank with heat-insulated binder 73, serving as a binder reserve.
Ainsi, en cas d'épuisement du volume de liant équipant la machine 1, il est possible d'en pomper une certaine quantité dans cette citerne auxiliaire, ceci grâce à des moyens appropriés (non représentés), et de la transférer dans la citerne 4. Avantageusement, la citerne 73, vue de côté, a la forme d'un triangle rectangle à angles arrondis, s'inscrivant sous un encombrement minimal entre la cabine 700 et la sellette 74, sous le (ou les) tapis 72. La trémie 71 est destinée à recevoir des cailloux à partir d'un camionThus, in the event of exhaustion of the volume of binder equipping the machine 1, it is possible to pump a certain quantity of it into this auxiliary tank, this using appropriate means (not shown), and to transfer it to the tank 4 Advantageously, the tank 73, seen from the side, has the shape of a right-angled triangle with rounded angles, registering in a minimal space between the cabin 700 and the harness 74, under the (or) carpet 72. The hopper 71 is intended to receive stones from a truck
8 à benne basculante 80 se déplaçant juste devant l'attelage constitué par le véhicule tracteur 7 et la machine tractée 1, au cours d'une opération d'épandage (voir figure8 with dump body 80 moving just in front of the hitch formed by the towing vehicle 7 and the towed machine 1, during a spreading operation (see figure
7).7).
Lorsqu'un camion-benne 8 est vide, il peut être remplacé par un autre, plein, et ainsi de suite, sans que la rotation des camions approvisionneurs ne compromette la continuité de l'épandage synchrone de liant et de cailloux. Sur la figure 6, on a désigné par la référence C les cailloux déversés par une benne 80 dans la trémie 71. Les cailloux sortant de cette dernière sont acheminés en continu, sous forme d'une couche C0 vers le haut et vers l'arrière (flèche k) et sont déversés et recueillis dans la trémie de stockage 2 pour former la masse de cailloux Cl, dont le cheminement ultérieur dans la machine d'épandage a déjà été décrit plus haut.When a dump truck 8 is empty, it can be replaced by another, full one, and so on, without the rotation of the supply trucks compromising the continuity of the synchronous spreading of binder and stones. In FIG. 6, the pebbles poured by a bucket 80 into the hopper 71 have been designated by the reference C. The pebbles leaving the hopper are conveyed continuously, in the form of a layer C0 upwards and backwards (arrow k) and are poured and collected in the storage hopper 2 to form the mass of stones Cl, the subsequent path of which in the spreading machine has already been described above.
A titre indicatif, les principaux paramètres de travail sont les suivants :As an indication, the main working parameters are as follows:
-Vitesse d'épandage : 1 m/s ; - Largeur d'épandage : 4 m ;- Spreading speed: 1 m / s; - Spreading width: 4 m;
- Dosage du liant : 1,2 kg/m2 ;- Binder dosage: 1.2 kg / m 2 ;
- Dosage des cailloux : 12 litres/m ;- Dosage of stones: 12 liters / m;
Ceci correspond à une mise en oeuvre de 18 m /h de liant et de 180 m3/h de cailloux environ. Dans le second mode de réalisation illustré à la figure 8, la machine, référencée l', est pourvue d'un petit réservoir additionnel 9 fixé sur le châssis 10, juste devant la citerne à liant 4.This corresponds to an implementation of 18 m / h of binder and 180 m 3 / h of pebbles. In the second embodiment illustrated in FIG. 8, the machine, referenced l ', is provided with a small additional tank 9 fixed on the chassis 10, just in front of the binder tank 4.
Ce réservoir, également calorifuge, contient de l'eau chaude sous pression. Cette machine comporte deux rampes à liant similaires 6a, 6b, placées l'une devant l'autre, à faible distance mutuelle.This tank, also heat-insulated, contains hot water under pressure. This machine comprises two ramps with similar binder 6a, 6b, placed one in front of the other, at a small mutual distance.
Entre ces deux rampes est montée une rampe additionnelle 90 apte à projeter au sol de l'eau chaude. Celle-ci lui est fournie depuis le réservoir 9 par un système d'alimentation approprié (non représenté). Cette machine permet de mettre en œuvre le procédé d'épandage décrit dans le FR - A - 2 800 104, auquel on pourra se reporter au besoin.Between these two ramps is mounted an additional ramp 90 capable of projecting hot water to the ground. This is supplied to it from the reservoir 9 by an appropriate supply system (not shown). This machine makes it possible to implement the spreading process described in FR - A - 2 800 104, which can be referred to if necessary.
Elle fonctionne de manière identique à celle qui fait l'objet du premier mode de réalisation décrit plus haut, la seule différence se situant au niveau de la consistance du liant répandu. Bien que, dans le mode d'exécution décrit plus haut décrit plus haut, la trémie de stockage soit montée pivotante par rapport au châssis qui la supporteIt operates in an identical manner to that which is the subject of the first embodiment described above, the only difference being at the level of the consistency of the spread binder. Although, in the embodiment described above described above, the storage hopper is pivotally mounted relative to the frame which supports it
(autour de l'axe Y-Y'), il est clair que l'invention couvre également le cas d'une machine de conception plus simple, dans laquelle cette trémie 2 est montée fixe sur le châssis 10. Dans ce cas, avantageusement, l'angle d'inclinaison de la paroi 20 est augmenté afin de permettre un vidage complet des cailloux. A cet effet, il est avantageusement supérieur à 35° par rapport à l'horizontale, par exemple de l'ordre de 40°. (around the axis Y-Y '), it is clear that the invention also covers the case of a machine of simpler design, in which this hopper 2 is fixedly mounted on the chassis 10. In this case, advantageously , the angle of inclination of the wall 20 is increased to allow complete emptying of the stones. For this purpose, it is advantageously greater than 35 ° relative to the horizontal, for example of the order of 40 °.

Claims

REVENDICATIONS
1. Machine d'épandage en continu de liant et de cailloux sur le sol, destinée à la confection et/ou à la réparation d'une chaussée, qui comprend un châssis mobile supportant:1. Continuous spreading machine for binder and pebbles on the ground, intended for making and / or repairing a roadway, which comprises a mobile chassis supporting:
- une première trémie (2), dite de stockage, de grande capacité, destinée à recevoir et à contenir des cailloux à épandre ;- A first hopper (2), called storage, of large capacity, intended to receive and contain stones to spread;
- une citerne (4) destinée à recevoir et contenir le liant ;- a tank (4) intended to receive and contain the binder;
- une seconde trémie (3), dite de régulation, de capacité sensiblement inférieure à celle de la première trémie (2), également destinée à recevoir et à contenir des cailloux à épandre ; - au moins une rampe à liant (6) disposée transversalement par rapport à la direction d'avancement de la machine, alimentée en liant depuis ladite citerne (4) ;- a second hopper (3), called a regulation hopper, of capacity substantially lower than that of the first hopper (2), also intended to receive and contain stones to be spread; - At least one binder ramp (6) disposed transversely to the direction of advance of the machine, supplied with binder from said tank (4);
- un dispositif (5) situé à la base et à la sortie de la trémie de régulation (3), qui est adapté pour assurer l'extraction des cailloux hors de cette trémie, et leur distribution au sol (S), à l'arrière de la rampe à liant (6), lorsqu'on considère le sens d'avancement (H) de la machine sur la chaussée ;- A device (5) located at the base and at the outlet of the regulation hopper (3), which is adapted to ensure the extraction of stones from this hopper, and their distribution to the ground (S), at the rear of the binder ramp (6), when considering the direction of travel (H) of the machine on the road;
- un convoyeur (22) apte à transférer des cailloux, au cours de l'opération d'épandage, de la trémie de stockage (2) dans la trémie de régulation(3) ; caractérisée par le fait que lesdites trémie de stockage (2) et de régulation (3) sont adjacentes et ont chacune la forme générale d'un dièdre, dont l'ouverture est tournée vers le haut, et l'arête vers le bas, cette arête étant orientée transversalement par rapport à la direction d'avancement de la machine, ce qui confère à leurs parois, vues de côté, l'allure générale d'un "W", ladite citerne à liant étant logée dans l'espace situé à l'intérieur et à la base des branches de ce "W". - a conveyor (22) capable of transferring pebbles, during the spreading operation, from the storage hopper (2) into the regulation hopper (3); characterized by the fact that said storage (2) and regulation (3) hopper are adjacent and each have the general shape of a dihedral, the opening of which faces upwards, and the edge downwards, this edge being oriented transversely to the direction of advance of the machine, which gives their walls, seen from the side, the general appearance of a "W", said binder tank being housed in the space located at inside and at the base of the branches of this "W".
2. Machine selon la revendication 1, caractérisée par le fait que ladite citerne à liant (4), vue de côté, présente un contour approximativement triangulaire, à angles arrondis, qui s'inscrit complémentairement dans l'espace situé à l' intérieur et à la base des branches dudit "W".2. Machine according to claim 1, characterized in that said binder tank (4), seen from the side, has an approximately triangular contour, with rounded angles, which fits in additionally in the space situated inside and at the base of the branches of said "W".
3. Machine selon la revendication 1 ou 2, caractérisée par le fait que ledit convoyeur (22) comprend au moins un transporteur à bande.3. Machine according to claim 1 or 2, characterized in that said conveyor (22) comprises at least one conveyor belt.
4. Machine selon la revendication 3, caractérisée par le fait que ledit transporteur à bande (22) s'étend de l'avant vers l'arrière et de bas en haut sous la face arrière du dièdre constitutif de la paroi de ladite trémie de stockage (2), et est adapté pour acheminer les gravillons depuis une fenêtre d'échappement (21) découpée dans cette paroi (20), au voisinage de l'arête du dièdre, en partie supérieure de la face avant du dièdre constitutif de la paroi de ladite trémie de régulation (3), et pour les déverser en continu dans cette dernière. 4. Machine according to claim 3, characterized in that said conveyor belt (22) extends from front to rear and from bottom to top under the rear face of the dihedral constituting the wall of said hopper of storage (2), and is suitable for conveying gravel from an exhaust window (21) cut out from this wall (20), in the vicinity of the edge of the dihedral, in the upper part of the front face of the dihedral constituting the wall of said regulation hopper ( 3), and to pour them continuously into the latter.
5. Machine selon la revendication 4, caractérisée par le fait qu'elle comporte une paire de transporteurs à bande (22a, 22b) placés parallèlement, côte à côte.5. Machine according to claim 4, characterized in that it comprises a pair of belt conveyors (22a, 22b) placed parallel, side by side.
6. Machine selon l'une des revendications 1 à 5, caractérisée par le fait que ladite trémie de stockage (2) en forme de dièdre est articulée autour d'un axe horizontal et transversal (YY') situé au voisinage de son arête, des moyens étant prévus pour la faire pivoter vers le haut et vers l'avant autour de cet axe.6. Machine according to one of claims 1 to 5, characterized in that said storage hopper (2) in the form of a dihedron is articulated around a horizontal and transverse axis (YY ') located in the vicinity of its edge, means being provided for pivoting it upwards and forwards around this axis.
7. Machine selon l'une des revendications 1 à 6, caractérisée par le fait qu'elle comporte une seconde rampe à liant (6a), disposée parallèlement à proximité de ladite rampe à liant (6b), ainsi qu'une rampe de projection d'eau chaude (90), positionnée parallèlement, entre ces deux rampes à liant (6a, 6b).7. Machine according to one of claims 1 to 6, characterized in that it comprises a second binder ramp (6a), arranged parallel near said binder ramp (6b), as well as a projection ramp hot water (90), positioned in parallel, between these two binder ramps (6a, 6b).
8. Installation mobile d'épandage en continu de liant et de cailloux sur le sol, destinée à la confection et/ou à la réparation d'une chaussée, qui comporte une machine (1 ; l') conforme à l'une quelconque des revendications précédentes, caractérisée par le fait qu'elle comprend un véhicule automoteur (7) - dit de transfert - muni à l'avant d'une trémie réceptrice (71) pour des cailloux qui peuvent y être déversés depuis un camion-benne (8), et pourvu d'un convoyeur (72), tel qu'un tapis transporteur, apte à acheminer les cailloux de ladite trémie réceptrice (71) vers l'arrière du véhicule, à une hauteur convenable, de telle sorte que, ce véhicule de transfert étant intercalé entre le camion-benne (8) et la machine d'épandage (1 ; l'), il assure l'alimentation de cette dernière en cailloux, ceux-ci étant déversés en partie aval du convoyeur, et à l'arrière du véhicule de transfert, dans la trémie de stockage (2) de ladite machine d'épandage.8. Mobile installation for continuous spreading of binder and pebbles on the ground, intended for making and / or repairing a roadway, which comprises a machine (1; l ') conforming to any one of the previous claims, characterized in that it comprises a self-propelled vehicle (7) - called a transfer vehicle - provided at the front with a receiving hopper (71) for stones which can be dumped there from a dump truck (8 ), and provided with a conveyor (72), such as a conveyor belt, capable of conveying the pebbles of said receiving hopper (71) towards the rear of the vehicle, at a suitable height, so that this vehicle of transfer being interposed between the dump truck (8) and the spreading machine (1; l '), it ensures the supply of the latter with pebbles, these being poured downstream of the conveyor, and at l 'rear of the transfer vehicle, in the storage hopper (2) of said spreading machine.
9. Installation conforme à la revendication 8, caractérisée par le fait que ledit véhicule de transfert comporte, en outre, une citerne calorifugée (73) servant de réserve pour le liant.9. Installation according to claim 8, characterized in that said transfer vehicle further comprises a thermally insulated tank (73) serving as a reserve for the binder.
10. Installation selon l'une des revendications 8 ou 9, caractérisée par le fait que ladite machine d'épandage (1 ; l') est une remorque apte à être attelée audit véhicule de transfert (7) et à être tractée par celui-ci. 10. Installation according to one of claims 8 or 9, characterized in that said spreading machine (1; the) is a trailer capable of being coupled to said transfer vehicle (7) and to be towed by it- this.
PCT/FR2002/003874 2001-11-28 2002-11-13 Machine for simultaneously spreading gravel and binder on the ground WO2003046288A1 (en)

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Applications Claiming Priority (2)

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FR01/15345 2001-11-28
FR0115345A FR2832743B1 (en) 2001-11-28 2001-11-28 SIMULTANEOUS SPREADING MACHINE OF STONE AND BINDER

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US10676878B2 (en) 2018-11-08 2020-06-09 Jeffery Lynn Matkin Systems and methods for providing an undercarriage material handling system

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FR2909393B1 (en) * 2006-12-01 2010-02-19 Concept Travaux Publics MACHINE FOR SPREADING LIQUIDS AND MATERIALS ON A PAVEMENT
FR3035128A1 (en) * 2015-04-14 2016-10-21 Concepts Travaux Publics SPECIFIC EQUIPMENT FOR THE PRODUCTION OF A SUPERFICIAL COATING SITE

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US5069578A (en) * 1989-07-21 1991-12-03 Screg Routes Et. Travaux Publics Method and device for producing a surface coating on a surface such as a road
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
FR2800104A1 (en) * 1999-10-22 2001-04-27 Secmair Process, for carrying out thin surfacing of road, includes spreading first layer of hot bitumen, laying thin layer of hot water followed by layer of hot bitumen and finally spreading layer of stones on top

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FR2538014A1 (en) * 1982-12-17 1984-06-22 Bricout Alfred Roadworking tractor and semi-trailer assembly specially fitted out for producing road top surfaces
US5069578A (en) * 1989-07-21 1991-12-03 Screg Routes Et. Travaux Publics Method and device for producing a surface coating on a surface such as a road
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
FR2800104A1 (en) * 1999-10-22 2001-04-27 Secmair Process, for carrying out thin surfacing of road, includes spreading first layer of hot bitumen, laying thin layer of hot water followed by layer of hot bitumen and finally spreading layer of stones on top

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10676878B2 (en) 2018-11-08 2020-06-09 Jeffery Lynn Matkin Systems and methods for providing an undercarriage material handling system

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