FR3059346A1 - PAVEMENT REPAIR UNIT - Google Patents

Abstract

The invention relates to a pavement repair unit (1) comprising a gravel container and a binder storage tank, the unit (1) having on the rear side a gravel distribution ramp (31) and a binder spreading ramp (32), which extend at least over a predetermined width including the backside (22). According to the invention, the unit (1) comprises a spreading unit (4) for spreading gravel and binder in a targeted manner in an area of the roadway located in front of the front side and / or located laterally with respect to the front side and the rear side, and having an outwardly extending member (5) adapted to occupy a first extension position relative to the frame, wherein the second portion (52) of end is located above the zone, and a support member (6) for supporting an outlet head (7) of the chippings and the binder, a conduit (8) and conveying means in the conduit (8) for feeding gravel from the container to the head (7), a pipe from the tank to the head (7) and a device for bringing the binder into the pipe of the tank to the head (7).

Description

(54) PAVEMENT REPAIR UNIT.

The invention relates to a unit (1) for repairing a roadway, comprising a gravel container and a binder storage tank, the unit (1) comprising on the rear side a ramp (31) for distributing gravel. and a binder spreading ramp (32), which extend at least over a predetermined width comprising the rear side (22). According to the invention, the unit (1) comprises a spreading assembly (4), making it possible to spread in a targeted manner gravel and binder in an area of the roadway, located in front of the front side and / or located laterally with respect to the front side and to the rear side, and comprising a member (5) for deployment towards the outside, capable of occupying a first position of extension relative to the chassis, in which the second part (52) of end is located above the area, and a support member (6) serving to support a head (7) for removing the gravel and the binder, a conduit (8) and conveying means in the conduit (8) for bringing gravel from the container to the head (7), a pipe going from the tank to the head (7) and a device for bringing the binder into the pipe from the tank to the head (7).

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The invention relates to a pavement repair unit.

One field of application of the invention relates to machines used for the repair of pavements, in particular for repairing the holes formed in the pavements, commonly called potholes.

We know the machines of the type bi-spreader or synchronous graveller spreader (RGS), which are rolling machines for spreading gravel and a binder on the roadway.

One of the problems encountered in the repair of pavements is the fact that the holes are located over only part of the width of the pavement. The repair unit must plug the hole by depositing a sufficient quantity of gravel and binder, depending on the shape of each hole.

The invention aims to obtain a repair unit making it possible to adapt the quantity of gravel and binder deposited to the shape of each hole.

In fact, because each hole is formed by accident or by wear, the shape of each hole is not predictable, and machines of the dual-spreader type are provided essentially for uniformly distributing a determined quantity (small thickness) of binders and gravel over the entire width of a floor to seal the pavement above. On the other hand, plugging a hole formed in a pavement already made requires more precision and above all a greater thickness.

The invention aims to obtain a pavement repair unit meeting these requirements.

To this end, a first object of the invention is a pavement repair unit, comprising a frame, on which are mounted a gravel storage container and a binder storage tank and comprising a front side and a side. rear, characterized in that it comprises a spreading assembly, making it possible to spread in a targeted manner gravel and binder in an area of the roadway, located in front of the front side and / or located laterally with respect to the side front and rear side.

According to one embodiment of the invention, the spreading assembly comprising at least a first outward deployment member, movably mounted on the chassis, the first member comprising a first end portion connected to the chassis and a second end part remote from the first end part, the first outward deployment member being able to occupy a first position of extension relative to the chassis, in which the second end part is located above above said area.

According to one embodiment of the invention, the spreading assembly comprising a second support member serving to support an outlet head for gravel and binder, the second support member comprising a third end portion distant from a fourth end part on which the head is mounted, the third end part being connected to the second end part.

According to one embodiment of the invention, the spreading assembly comprising at least one conduit and means for conveying gravel in the conduit to bring gravel from the storage container to the head.

According to one embodiment of the invention, the spreading assembly further comprising at least one pipe going from the tank to the head and at least one device for bringing the binder into the pipe from the tank to the head.

According to one embodiment of the invention, the spreading assembly comprising a disengageable locking system between the second end portion and the third end portion, the disengageable locking system being able to occupy a position of immobilization of the third end part relative to the second end part and a declutching position, in which the third end part is suspended from the second end part and is free to be moved along at least a degree of freedom deviating from the vertical within a determined range of movement.

Thanks to the invention, the spreading assembly can be positioned above the area of the roadway to be treated, leaving the user the possibility of manually moving and visually moving the outlet head of the gravel and the binder, in order to that these gravel and binder can be moved throughout the hole without having to move the chassis of the unit, which can therefore in this case remain in a fixed position on the roadway.

The user can thus move the head finely according to the at least one degree of freedom by positioning it more or less long above each part of the hole, depending on its depth.

The invention thus makes it possible, once the chassis positioned near the area to be treated, in which the hole to be repaired is located, to deploy the first member to position the outlet head of the gravel and the binder above and / or near the hole. The filling of the hole with gravel and the binder poured out by the head can then be carried out in a fine manner by the user.

The invention thus allows an impeccable completion of the repair of the hole, without having to move the chassis of the unit, and therefore with great speed once the chassis is positioned near the area to be treated.

According to one embodiment of the invention, in the disengaged position, the third end part is free to be moved according to the at least one degree of freedom in rotation deviating from the vertical inside the determined range of motion.

According to one embodiment of the invention, in the disengaged position, the third end part is free to be moved along a connection of the ball or gimbal type to have at least two degrees of freedom in rotation deviating from the vertical within the determined range of motion.

According to one embodiment of the invention, the third end part comprises at least one articulation connecting it according to at least one degree of freedom to the second end part.

According to one embodiment of the invention, the disengageable locking system comprises a clamp fixed to the second end part, the clamp comprising a first jaw and a second jaw movable relative to the first jaw, the jaws surrounding the third end part remote from the joint, the jaws being brought into contact with the third end part so as to prevent the movement of the third end part deviating from the vertical relative to the second part d end in the immobilized position, the jaws being separated from the third end part to allow the movement of the third end part deviating from the vertical relative to the second end part inside of the determined range of movement in the declutching position.

According to one embodiment of the invention, the spreading assembly comprises at least one element for controlling the movement of the jaws between one and the other of the immobilized position and of the disengaged position.

According to one embodiment of the invention, the second member comprises a connecting element located at a distance from the third end part, the connecting member being able to be connected to a removable handlebar.

According to one embodiment of the invention, the unit comprises on the rear side a gravel distribution ramp and a binder spreading ramp which extend at least over a determined width including the rear side.

According to one embodiment of the invention, the head for removing the gravel and the binder comprises an opening for projecting the gravel and the binder having a predetermined two-dimensional extent in which there is a central point of the opening, the assembly of spreading comprising a system of displacement at a predetermined constant speed of the central point of the projection opening of the gravel and of the binder according to a predetermined displacement trajectory relative to the fourth end part.

According to one embodiment of the invention, the duct ends in the head, the fourth end part comprises around the duct a framework on which the displacement system is mounted and relative to which the displacement system guides the duct and the central point along the predetermined displacement trajectory.

According to one embodiment of the invention, the second support member comprises a middle part, connecting the third end part to the fourth end part, the framework comprises three uprights distant from each other, having respectively three fifth end parts fixed to the middle part and three sixth end parts arranged in a triangle and connected to each other by a frame in which the conduit passes, the displacement system being mounted on the frame and / or on the sixth end portions.

According to one embodiment of the invention, the displacement system is arranged to move the central point of the projection opening of the gravel and the binder along the predetermined displacement trajectory located at a distance from a vertical with respect to the fourth end part.

According to one embodiment of the invention, the displacement system is arranged to move the central point of the projection opening of the gravel and the binder along the predetermined displacement trajectory surrounding a vertical with respect to the fourth end part .

According to one embodiment of the invention, the displacement system is arranged to move the central point of the projection opening of the gravel and the binder along the predetermined circular displacement trajectory relative to the fourth end part.

According to one embodiment of the invention, the movement system comprises a head drive guide, at least one shaft, which is rotatably mounted around an axis of rotation on the fourth end part and which comprises an eccentric pin located at a distance from the axis, connection means for connecting the eccentric pin to the guide and means for driving the shaft in rotation around the axis.

According to one embodiment of the invention, the movement system comprises a head drive guide, three shafts, which are rotatably mounted around respectively three parallel axes of rotation and arranged in a triangle on the fourth end part and which respectively comprise three eccentric pins located at a distance from each respective axis, connecting means for connecting the eccentric pins to the guide and means for driving the shaft in rotation around the axis.

According to an embodiment of the invention, the frame is of generally triangular shape having three vertices situated respectively near the three sixth end parts, the three shafts being mounted to rotate on the three vertices respectively.

According to one embodiment of the invention, the connecting means comprise at least one link.

According to one embodiment of the invention, the guide is applied against the conduit ending in the head.

The invention will be better understood on reading the description which follows, given solely by way of nonlimiting example with reference to the appended drawings, in which:

FIG. 1 is a schematic side view of a pavement repair unit according to an embodiment in a second storage position,

FIG. 2 is a schematic perspective view from above of a pavement repair unit according to an embodiment of the invention in a second storage position,

- Figure 3 is a schematic perspective view of a spreading assembly of the repair unit in the extended position according to one embodiment of the invention,

FIG. 4 is a diagrammatic view on a larger scale of part of the spreading assembly according to FIG. 3,

0 - FIG. 5 is a schematic perspective view from above of another part of the spreading assembly of the repair unit according to one embodiment of the invention,

FIG. 6 is a schematic perspective view from below of the part of the spreading assembly of FIG. 5 according to an embodiment of the invention,

5 - FIG. 7 is another schematic perspective view from above of the part of the spreading assembly of FIG. 5 according to an embodiment of the invention,

FIG. 8 is a schematic perspective view from above of another part of the spreading assembly according to one embodiment of the invention, and

FIG. 9 is a schematic perspective view from below of the other part of the spreading assembly of FIG. 8 according to an embodiment of the invention,

FIG. 10 is a schematic top view of the other part of the spreading assembly of FIG. 8 according to an embodiment of the invention,

- Figure 11 is a schematic perspective view of a spreading assembly of the repair unit in the extended position according to one embodiment of the invention,

FIG. 12 is a diagrammatic view on a larger scale of part of the spreading assembly according to FIG. 11,

FIGS. 13, 14 and 15 are schematic side, top and perspective views respectively of a pavement repair unit according to one embodiment in a first extension position,

FIGS. 16 and 17 are schematic views respectively from above and in perspective of a pavement repair unit according to an embodiment showing several possible extension positions,

- Figures 18, 19 and 20 are schematic perspective views respectively from above, from below and from above from another angle of view, of the other part of the spreading assembly according to one embodiment of the invention.

In the figures, the unit 1 for repairing a roadway comprises a frame 2, on which are mounted a container 3 for storing gravel (which may include a grab 30 or hopper 30 with chippings) and a tank 4a for storing binder, can be a binder tank (the binder can be an emulsion of bitumen and water, or bitumen). Of course, any type of aggregates could be provided in place of gravel. The chassis 2 has a front side 21 and a rear side 22.

According to an embodiment represented in FIGS. 1 and 2, the unit 1 for repairing a roadway is movable on this roadway, for example rolling using rolling wheels 23 on the roadway, which are rotatably mounted under the chassis 2. For example, as shown in FIGS. 1 and 2, the unit 1 can be part of a self-propelled machine 100, making it possible to bring the repair unit 1 near the zone Z of the roadway to treat. The chassis 2 is intended to be moved in a direction of advance from the rear to the front on the roadway. Of course, the chassis could be moved in the forward direction or in the opposite direction.

In the embodiment shown in the figures, the self-propelled machine 100 is for example a machine 100 of the bi-spreader or synchronous gravity spreader type. In this case, the unit 1 comprises on the rear side 22 a ramp 31 for distributing gravel and a ramp 32 and / or 32a for spreading the binder, which extend at least over a width comprising the rear side 22 (the width being taken in the lateral direction T, horizontal and transverse to the longitudinal direction L going from the rear side 22 to the front side 21). Such machines 100 are used for making the roadway, their ramps 31, 32 for distributing gravel and binder on the rear side are not used in this case to repair a hole Z in the roadway. Of course, the repair unit 1 can be part of a self-propelled machine 100 not being of the bi-spreader type, nor of the synchronous gravity spreader type. The repair unit 1 can also be provided on a trailer to be towed by a self-propelled vehicle on the road.

The repair unit 1 comprises a spreading unit 4 making it possible to treat an area Z of the roadway, located in front of the front side and / or located laterally in the lateral direction T relative to the front side 21 and to the rear side 22, that is to say laterally with respect to the longitudinal direction L going from the rear side 22 to the front side 21, and therefore to the right or to the left with respect to this longitudinal direction L. The spreading assembly 4 is arranged for spread the gravel and binder in a targeted manner in the Z zone of the roadway. This zone Z of the roadway to be treated can for example be a hole Z in the roadway or more generally localized defects Z of wear of the roadway. For example, localized holes, called potholes, may be formed over time on a roadway that has been made, due for example to the repeated passage of heavy goods vehicles or other vehicles. These Z holes, of short length and width, on the other hand can have a fairly great depth, which can hinder the fluid circulation of passenger cars on the roadway. These Z holes can have a depth of 2 to 10 cm, and have from 20 cm to 50 cm in width and / or length.

The spreading assembly 4 comprises at least a first member 5 for deployment towards the outside and a second support member 6 serving to support a head 7 for the outlet of the gravel and the binder, coming from the container 3 and from the tank 4a . The first member (s) 5 for deployment to the outside are mounted mobile on the chassis 2 and comprise a first end part 51 connected to the chassis 2 and a second end part 52 distant from the first end part 51. The first member 5 for deployment towards the outside is able to occupy a first position of extension towards the front and / or laterally with respect to the chassis 2, in which the second end part 52 is located above the zone Z, as shown in FIGS. 3, 8, 11, 13, 14 and 15, and a second position relative to the frame, in which the second end part 52 is stored on the frame 2, as shown in the figures 1, 2, 16 and 17, for example to have a width and / or length size smaller than the width and / or length of the chassis 2. This second storage position can be a folded position of the first deployment member relative to the chassis 2.

The second support member 6 comprises a third end portion 61 distant from a fourth end portion 62 on which is mounted the head 7 for removing the gravel and the binder (or nozzle 7 for leaving the gravel and the binder) . The third end part 61 is connected to the second end part 52. The second support member 6 can thus be in the form of a “trunk”, that is to say of a member 6 extending vertically for the pouring of the gravel and the binder by the head 7 located at the bottom of the member. 6.

The first member 5 is for example articulated by an articulation 53 on the chassis 2. The chassis 2 can comprise a gantry 24 fixed to a base 25 of the chassis 2 on which the tank 4a and the container are mounted 3. The gantry 24 comprises by example an upper end 241 which is connected to the first end part 51, for example by the joint 53. The gantry 24 is for example disposed in front of the tank 4a and the container 3. For example, in the case where the repair unit 1 is integrated into a self-propelled machine having a front cabin 31, which can be a bi-spreader or synchronous gravity spreader, the gantry 24 has a lower part 242, for example vertical, fixed to the base 25 and ίο fixed to an upper part 243, for example horizontal, comprising the upper end 241, the lower part 242 of the gantry 24 is for example located behind the cabin 31 and in front of the tank 4a, itself located d e in front of the container 3. The upper part 243 of the gantry 24 and its upper end 241 connected to the first deployment member 5 are for example located above the cabin 31 and towards the front relative to the tank 4a. This minimizes the size of the spreading assembly 4, when it is in the second folded position.

For example, the first member 5 for outward deployment may be an arm 5 which is itself deformable and may itself include at least one second articulation. For example, the first member 5 for outward deployment is an arm 5 having a first section 55 comprising the first end part 51 connected to the chassis 2 and a second section 56 comprising the second end part 52 remote from the first section 55, the second section 56 being articulated to the first section 55 by a second articulation 54. The articulation 53 is for example placed near the right or left side of the chassis 2, having a length less than the width of the chassis 2 according to the lateral direction T. In the second storage position, represented in FIGS. 1, 2, 16 and 17, the first section 55 of the deployment member 5 is folded behind and above the front side 21 of the chassis 2, same as the second section 56. The first section 55 extends in this storage position for example parallel to the front side 21, while the second section 56 extends in this posit ion folded parallel to the right or left side of the chassis 2.

According to one embodiment, the spreading assembly 4 comprises displacement means, for example with a jack, for example hydraulic, for moving the first member 5 for deployment from the second storage position to the first position of extension towards the outside and / or for moving the member 6 relative to the member 5. There is for example provided a first jack 57, 58 for operating the first member 5 for deployment relative to the frame 2, as for example in the embodiment shown in FIG. 2, at least a first jack 57 connecting the first section 55 to the gantry 24 at a distance from the first articulation 53 and at least one second jack 58 connecting the first section 55 to the second section at a distance from the second articulation 54, and / or a jack 59 for moving the member 6 relative to the member 5, this or these jacks being able to be hydraulic. The first deployment member 5 is capable of being moved so that the head 7 for removing the gravel and the binder can be placed in front of the front side 21 and / or on a right side and / or a left side of the chassis 2. For example , in the embodiment shown in the figures, since the joint 53 is placed near the right side of the chassis 2, the first section 55 can be moved into the first extension position in front of the front side and / or at right of it and the second section 56 can be moved in front of the front side 21 and / or to the right of the chassis 2 and / or to the left of the chassis 2.

Line L1 of FIGS. 16 and 17 represents different first positions of extension of the second end portion 52 of the member 5 at the front (front region RA), on the right (region RD on the right) and on the left ( RG region on the left) with respect to the chassis 2. In the case where, as shown in FIGS. 17, the member 5 has the sections 55 and 56 hinged together by the second articulation 54, the second end part 52 is movable in a region R (formed by regions RD, RG and RA connected to each other) situated in a horizontal plane between a first exterior line L1 and a second interior line L2 (the lines L1 and L2 being distant from the chassis 2, with the line L2 located between the line L1 and the chassis 3) relative to the chassis 2, by rotation of the end part 51 relative to the chassis 2 and by rotation of the section 56 relative to the section 55 around the joint 54 The outside line L1 corr espond the extension position of the second end part 52 for the maximum length of the arm 5 between the joint 51 and the end part 52 connected to the head support member 6, in which the section 56 is in the substantially 180 ° extension of section 55. The inner line L2 corresponds to the position of extension of the second end part 52 for the minimum length of the arm 5 between the joint 51 and the part 52 d end connected to the head support member 6, in which the section 56 is not in the substantially 180 ° extension of the section 55 but forms a non-zero minimum acute angle with the section 55. The arm 5 allows the end portion 52 to occupy any point in the R region and the RA, RD and RG regions. The section 56 can for example turn to the right and to the left with respect to the section 55 around the articulation 54. The spreading assembly 4 comprises at least one conduit 8 for feeding gravel from the container 3 to the head 7 The spreading assembly 4 also comprises conveyor means 9 for moving the gravel in the conduit 8 from the container 3 to the head 7.

According to one embodiment, these conveying means 9 comprise for example a blower 90 for sending a high air flow (arrows Fl in FIG. 1) in the duct 8 and a conveyor 91 for bringing the gravel (arrows F2 to the Figure 1) from the container 3 to a device 92 for injecting gravel in the conduit 8. This injection device 92 may comprise a rotary barrel 93 allowing the injection of gravel leaving the conveyor 91 into the air flow sent by the blower 90, in the conduit 8. The conveyor 91 may comprise, in FIGS. 5 to 7, an endless conveyor screw 911 set in rotation in a second conduit 912 going from the container 3 to a hopper 913 for discharging gravel by gravity in the barrel 93. The screw 911 makes it possible to take and dose the gravel, at a variable rate and controlled by a speed control of rotation of the screw 911. The container 3 for storing the gravel can be formed for example example by a bucket 30 containing gravel and capable of being tilted so that a lower opening for discharging gravel from the bucket 30 is located above an inlet opening of the conveyor 91, in order to discharge the gravel therefrom. gravity. The upper wall 913 of the conveyor 91 has not been shown in FIGS. 5 and 7 to show the screw 911. The conveyor 91, the hopper 913 and the injection device 92 are fixed to the frame 2. The barrel 93 can be a rotary cylinder 931 comprising internal walls defining several compartments 930 open on the top under the hopper 913 to allow the passage of gravel and open on the bottom to allow the passage of air. The barrel 93 is rotated relative to the fixed casing 932 of the injection device 92 around a vertical axis to fill gravel in turn its compartments 930 at a distance from the axis of rotation and so that each compartment 930 passes by rotation in turn between a pipe 901 for sending air and a pipe 902 for air outlet from the blower 90, located at a distance from the axis of rotation. The air delivery pipe 901 opens out under a lower part

9320 of the casing 932 of the injection device 92, located opposite the outlet pipe 902 opening onto an upper part 9321 of the casing 932, in order to push the gravel poured into each compartment into the outlet pipe 902 by the air flow 930 passing over the air delivery pipe 901. The outlet pipe 902 is connected to the duct 8 to take the gravel into the air flow (arrows F3 in FIG. 1). The compartments 930 and the speed of rotation of the barrel make it possible to calibrate the quantity of gravel injected into the air flow, and avoid any blockage of the duct 8 carrying the gravel. The compartments 930 are for example all of the same horizontal extent under the hopper 913 and / or of the same height and / or of the same volume.

According to one embodiment, called depressurization, a first section of the conduit 8 arrives at an inlet 84 fixed to the third end portion 61 and directed in a first direction DI inlet making a non-zero angle with the third portion 61 end and / or the middle part 63 of the member 6. This first direction DI entry is non-vertical and can be substantially horizontal or oblique to the vertical 74 in the first position of extension of the member 5. This inlet 84 is for example located near and outside the second end portion 52. This inlet 84 receives from the first section of the conduit 8 the flow of blown air in which the gravel is located. This inlet 84 is directed to a device 86 for deflecting the gravel downwards and for depressurizing the air flow. This device 86 comprises a depressurization pipe 85, for example turned upwards above the inlet 84, and serves to cause the air flow from the first section of the pipe 8 and sent by the blower 90 to start. device 86 comprises for example a stop part 87 against which the gravel from the inlet 84 is sent in the direction Dl, the depressurization line 85 being located between the inlet 84 and the stop part 87. The gravel, because they abut against the part 87 and are no longer entrained by the air flow, falls down in a second section of the conduit 8 extending downwards from this device 86, for example in the third end portion 61 to the head 7. For example, the second section of the conduit 8 is inserted into the third end portion 61 and into the middle portion 63 of the member 6 from which it protrudes up to head 7.

In addition, the fact that the gravel arrives in the head 7 practically vertically from a fairly high height of the member 6 with a depressurization makes it possible to obtain a zone Z filled with a mixture of gravel and binder and a stopper with very few gravel discharges outside the Z zone. The Z zone is filled in depth by a mixture of binder and gravel which self-compacts (due to the fall to the ground) naturally.

Of course, this depressurization embodiment may not be present, or the depressurization pipe 85 may not be present, so as not to have depressurization of the air flow transporting the gravel, the pipe 8 being able to go in this case. without interruption of the device 92 for injecting the gravel at the head 7 passing through the parts 52 and 61. In this case, the gravel and binder are projected at a greater speed downwards and with greater compactness by the head 7 , which generates a greater quantity of gravel discharges outside the Z zone.

For the surface aspect, the zone Z thus filled can be covered by a surface part thanks to the traditional function of the bi-spreader or synchronous graveller spreader.

The spreading assembly 4 comprises at least one pipe 10 (shown in dashed lines in FIGS. 2, 3 and 13) going from the tank 4a to the head 7 and at least one device 11 for bringing the binder into the pipe 10 of the tank 4a at the head 7. This device 11 can be pump or pressure.

According to one embodiment, the head 7 has an opening 71 for projecting the gravel and the binder, this opening 71 going downwards. According to one embodiment, the head 7 for removing the gravel and the binder is fixed to the lower end of the conduit 8. The head 7 makes it possible to project downwards onto the roadway a mixture of gravel and binder.

The duct 8 is for example made of a flexible material, for example of elastomer, and is for example fixed to the first and second members 5 and 6 and / or to the gantry 24 in one or more places of each of these.

According to one embodiment, the spreading assembly 4 comprises a disengageable locking system 12 between the second end part 52 and the third end part 61, as shown in FIGS. 3, 4, 13 and

16. The locking system 12 has an immobilization position and a declutching position. In the disengaged position, the third end part 61 is free to be moved according to at least one degree of freedom deviating from the vertical within a determined range of movement relative to the second part 52 end. In this disengaged position, the second end part 52 is suspended from the third end part 61. One or more degrees of freedom can be provided. The degree of freedom can be with one or more rotations deviating from the vertical relative to the second end portion 52. The degree or degrees of freedom can be obtained by one or more joints. The third end part 61 can be connected to the second end part 52 by one or more axis (s) of rotation or by a ball joint or cardan joint. In the immobilized position, the third end part 61 is fixed relative to the second end part 52.

In the embodiment shown in Figures 3, 4, 13, 16 and 17, the second end part 52 is fixed to a support 521 connected by a first axis 621 of rotation to an intermediate piece 622. The third part 61 d end is connected by a second axis 623 of rotation to the intermediate piece 622. The two axes of rotation 621 and 623 are non-parallel and not coincident, for example being substantially horizontal. The two axes 621 and 623 can extend in two directions perpendicular to each other and can be intersecting or not. The intermediate piece 622 can for example surround the third end portion 61. The intermediate piece 622 has two opposite first sides, which are articulated by a joint 621a and another joint 621b respectively around the first axis 621 of rotation in connection with the support 521. The intermediate piece 622 has two other opposite sides which are articulated by an articulation 623a and another articulation 623b around the second axis 623 of rotation in connection with the third end part 61. The intermediate piece 622 is therefore located in this case between two wings 521a and 521b of the support 521. The intermediate piece 622 is for example of generally rectangular shape by its sides. The support 521 is for example rotatably mounted on an axis of rotation 522 of the second end part 52, the jack 59 being connected to the second end part 52 and to the support 521 at a distance from the axis of rotation 522.

According to one embodiment, the disengageable locking system 12 comprises a clamp 120 having a first jaw 121 and a second jaw 122 movable relative to the first jaw 121. The first jaw 121 and the second jaw 122 surround the third part 61 d 'end. The clamp 120 is fixed to the second end part 52, for example to its support 521, and is located at a distance from the articulation axis 621 and / or 623 and at a distance from the articulations 621a, 621b, 623a and 623b .

The jaws 121, 122 are able to be brought into contact with the third end part 61 so as to prevent the displacement of the third end part 61 deviating from the vertical relative to the second end part 52 in the immobilized position.

The jaws 121, 122 are able to be separated from the third end part 61 to allow the displacement of the third end part 61 deviating from the vertical according to at least one degree of freedom relative to the second part 52 end in the declutching position.

The clamp 120 therefore delimits, in the disengaged position, the determined range of movement within which the third end portion 61 can be moved according to the degree or degrees of freedom.

Thus, thanks to the spreading assembly 4 according to the invention, the head 7 for gravel and binder outlet can follow a pendulum movement suspended from the first deployment member 5, when the latter is in the first position of extension and when the locking system 12 is in the declutching position. The repair unit 1 according to the invention thus makes it possible to position the outlet head 7 in a precise manner in different places located inside the zone Z to be treated. This positioning can be modified at will and in a precise manner by the user who can act in this disengaged position directly on the position of the second member 6 according to the degree (s) of freedom relative to the first deployment member 5 . The user, by acting directly on the movement of the second member 6 can thus safely and effortlessly move the head 7 above the desired location in the zone Z, having the possibility of controlling visually the correct discharge of the gravel and the binder at this location in zone Z. The user can thus swing the second member 6 without exerting great efforts on it, so that the head 7 is moved above the whole of zone Z, being able to stay longer above the deeper places thereof than with respect to the shallower places, which makes it possible to adapt to any irregularity of zone Z. For example, the range determined in particular in the declutching position is an angular range greater than or equal to 5 ° or 10 °.

According to one embodiment, the spreading assembly 4 comprises at least one element for controlling the movement of the jaws 121, 122 between one and the other of the immobilized position and the disengaged position, for example by at least one jaw displacement cylinder 121, 122.

According to one embodiment, the second member 6 comprises a connecting element 124, which is located at a distance from the third end part 61. The connecting member 124 is able to be connected to a removable handlebar G. The handlebar G allows a user, when the handlebar G is connected to the connecting element 124 and when the spreading assembly 4 is in the first deployment position and in the disengaged position, to guide the movement of the second member 6 and therefore of the head 7 above different locations in the zone Z. A user can be in the cabin 30 to move the unit 1 and control the immobilization or disengaging position, while another user can be on the road to handle handlebar G.

The gravel and the binder sent by the conduit and the pipe reach the head 7 from where they come out to be poured over the zone Z and for example fill the hole when this zone Z is a hole.

The handlebar G can then be disconnected relative to the second member 6.

Then, after spreading the gravel and the binder through the head 7, it stops sending them to the latter and the locking system 12 is passed into the immobilized position. The first member 5 can then be controlled to pass from the first deployment position to the second storage position on the chassis 2.

The opening 71 for projecting the gravel and the binder of the head 7 has a predetermined two-dimensional extent in which there is a central point 72 of the opening 71.

According to one embodiment, the opening 71 of the head 7 is circular. The central point 72 can be located in the center of the circular opening 71. Of course, the opening 71 can have any other shape.

According to one embodiment, the spreading assembly 4 comprises a system 13 of displacement at a predetermined constant speed from the central point 72 of the opening 71. The displacement system 13 is arranged to move the central point 72 of the opening 71 for projecting the gravel and the binder along a trajectory 73 of predetermined displacement with respect to the fourth end part 62 of the second member 7.

According to one embodiment, this trajectory 73 of predetermined displacement is located at a distance from a vertical 74 taken relative to the fourth end part 62. This vertical 74 is for example taken relative to the center of the fourth end part 62 and / or to the center of the third end part 61. The trajectory 73 of displacement of the central point 72 can for example surround the vertical 74.

Thus, thanks to the invention, the head 7 so of the gravel and the binder automatically sweeps several different places located in the zone Z to be treated, to pour gravel and binder therein. The invention thus makes it possible to ensure a homogeneous distribution and filling of the gravel and the binder in the zone Z to be treated, which can in particular be a hole to be filled in the pavement.

In addition, the fact that the gravel arrives in the head 7 practically vertically from a fairly high height of the member 6 and that the binder sent opens into the opening 71 of the head 7 ensures a certain depressurization of the conduit 8, which makes it possible to obtain a zone Z filled with a compact mixture of gravel and binder and a plugging with very few discharges outside zone Z.

Zone Z is filled in depth with a mixture of binder and gravel which self-compacts due to the fall to the ground. For the surface aspect, the zone Z thus filled can be covered by a surface part thanks to the traditional function of the bi-spreader or synchronous graveller spreader.

According to one embodiment, the trajectory 73 of displacement of the central point 72 of the opening 71 of projection of the gravel and of the binder is for example circular with respect to the fourth end part 62, as shown by example in Figure 10.

According to one embodiment, shown in Figures 3, 8, 9 and 10, the displacement system 13 comprises at least one shaft 76a, 76b, 76c which is rotatably mounted around at least one respective axis 77a, 77b, 77c of rotation on the fourth end part 62, this shaft 76a, 76b, 76c respectively comprising an eccentric pin 78a, 78b, 78c located at a distance from the axis 77a, 77b, 77c of rotation. The eccentric spindle 78a, 78b, 78c drives along the path 73 of predetermined movement, by means 79a, 79b, 79c of connection a guide 75 for driving the head 7. Means 80a, 80b, 80c of rotation drive of the shaft 76a, 76b, 76c about the axis 77a, 77b, 77c of rotation are provided in the movement system 13. The connecting means 79a, 79b, 79c connect the eccentric pin 78a, 78b, 78c to the guide 75 and can comprise at least one link 79a, 79b, 79c.

For example, there may be provided three shafts 76a, 76b, 76c, which are rotatably mounted around respectively three axes 77a, 77b, 77c of parallel rotation and arranged in a triangle on the fourth end part 62. The three shafts 76a, 76b, 76c respectively have three eccentric pins 78a, 78b, 78c located at a distance from each respective axis 77a, 77b, 77c. The displacement system 13 also comprises three connecting means 79a, 79b, 79c for respectively connecting the eccentric pins 78a, 78b, 78c to the guide 75.

According to one embodiment, the guide 75 is applied against the external surface of the pipe 8 for passing gravel.

According to one embodiment, the central point 72 of the opening 71 for projecting the gravel and the binder corresponds substantially to the center of the guide 75 or to a reference point of the guide 75. Thus, in the case where the trajectory 73 is circular , the center of the guide 75 describes a circular trajectory.

According to one embodiment, the conduit 8 is mounted movably in the guide 75. This allows, when the guide 75 is moved by the displacement system 13, that the guide 75 can slightly rotate around the conduit 8 while moving the latter along the predetermined path 73.

According to one embodiment, under the guide 75 may be a ring 83 fixed around the duct 8. This makes it possible to prevent the duct 8 from touching the frame 82 during its movement.

The displacement system 13 makes it possible to rotate the conduit 8 along the path 73 without significant rotation between the guide 75 and the conduit 8. In addition, the displacement system 13 is robust with respect to external pollution (bitumen, dust ).

According to one embodiment, the displacement system 13 is mounted on a frame 82 of the fourth end part 62, this frame 82 being located around the pipe 8 for passing gravel. The displacement system 13 guides the duct 8 relative to the framework 82, and therefore the central point 72 along the trajectory 73 of predetermined displacement relative to the framework 82.

The second support member 6 has a middle portion 63 connecting the third end portion 61 to the fourth end portion 62, this middle portion extending, for example, in length vertically.

According to one embodiment, the frame 82 comprises three uprights 82a, 82b, 82c which are spaced from one another, for example with a spacing increasing from top to bottom. Each upright 82a, 82b, 82c respectively has a fifth end portion 821a, 821b, 821c end, or upper, fixed to the middle portion 63 of the second member 6 and a sixth portion 822a, 822b, 822c end or lower. The three sixth end parts 822a, 822b, 822c are arranged in a triangle and are interconnected by a frame 823 delimiting a gaping passage 825 in which the duct 8 passes without touching the frame 823. The system 13 of displacement is mounted on the frame 823 and / or on the sixth end parts 822a, 822b, 822c.

The frame 823 allows better guidance of the conduit 8 by being able to bear on several support points of the frame 82 surrounding the conduit 8, as well as to a certain extent ensuring protection between the exterior and the conduit 8 carrying the head 7 for gravel and binder outlet. Thus, the frame 82 avoids that, during the deployment of the first member 5 towards the outside in the first extension position above the zone Z to be treated, the duct 8 or the head 7 does not strike an obstacle, this which avoids damaging the duct 8 and the head 7. But the framework 82 also provides a protective function vis-à-vis the users, who will at all times have the framework 82 and the frame 823 between them and the head 7 through which the gravel and the binder come out.

According to one embodiment, the frame 823 can be of general triangular shape, substantially horizontal in the first position of extension of the first deployment member 5. The frame 823 has three vertices 824a, 824b, 824c located respectively near the three sixth parts 822a, 822b, 822c of the end of the uprights 82a, 82b, 82c. The three shafts 76a, 76b, 76c are rotatably mounted on the three vertices 824a, 824b, 824c respectively. The frame 823 can comprise or be formed of three crosspieces 823a, 823b, 823c fixed together and / or fixed to the three sixth end parts 822a, 822b, 822c.

According to one embodiment, the guide 75 comprises a ring 751 surrounding the duct 8 and three tabs 752a, 752b, 752c peripheral fixed to the ring 751 and connected to the connecting means 79a, 79b, 79c, namely for example respectively three connecting rods 79a, 79b, 79c respectively through three joints 753a, 753b, 753c. The connecting rods 79a, 79b, 79c are also connected to the respective eccentric pins 78a, 78b, 78c by another articulation 791a, 791b, 791c distant from the articulations 753a, 753b, 753c.

According to one embodiment, the means for driving in rotation the shaft (s) 76a, 76b, 76c may for example comprise a drive motor 99, for example hydraulic, carried by the frame 82, for example carried by the frame 823. In the case of several shafts 76a, 76b, 76c, these can be rotated by a chain 81 meshing with sprockets 80a, 80b, 80c, fixed on the shafts 76a, 76b, 76c. According to one embodiment, the drive means or the motor 99 drive the shafts 76a, 76b, 76c at a constant speed of rotation about their respective axes 77a, 77b, 77c.

In the embodiment shown in FIGS. 18, 19 and 20, the drive motor 99 has a motor shaft 76d driven in rotation on which is fixed a fourth pinion 80d distinct from the pinions 80a, 80b, 80c and meshing with the chain 81 The motor shaft 76d is rotated relative to its casing 97 fixed to the frame 82 (or to the frame 823) around an axis 77d substantially parallel to the other axes 77a, 77b, 77c. The chain 81 is guided around the sprockets 80a, 80b, 80c, 80d and for example against external studs 98a, 98b fixed to the frame 82 or to the frame 823.

In another embodiment not shown, one of the shafts, for example the shaft 76a, is fixed to the motor shaft of the drive motor.

The motor 99 rotates the shaft 76a or the shaft 76d about the axis 77a or 77d of rotation, which also causes the pinions 80a, 80b and 80c to rotate via the chain 81, and therefore the eccentric pins 78a, 78b and 78c around their respective axes 77a, 77b, 77c. The drive of the pinions 80a, 80b, 80c makes it possible to synchronize the eccentric pins 78a, 78b, 78c. These rotations of the eccentric pins 78a, 78b, 78c move the connecting rods 79a, 79b, 79c, which then move the guide 75 pressing on the conduit 8 to make it describe the predetermined movement path 73. The path 73 corresponds to the path of the guide 75.

According to one embodiment, the constant speed of rotation of the shafts 76a, 76b, 76c around their respective axes of rotation 77a, 77b, 77c ensures that the central point 72 moves at a constant speed on the path 73, thus ensuring a uniform distribution of gravel and binder in zone Z.

According to one embodiment, the head 7 comprises a flange 15 comprising one or more orifices used for injecting binder downstream of the conduit 8, for example by internal injection holes distributed in the flange 15 around the flow of gravel sent by the conduit 8. The flange 15 has a binder inlet mouth 150, which communicates with the injection port (s) and which is also connected to the line 10 for sending binder. To this end, the pipe 10 can be connected to a box 16 fixed to the fourth end part 62, for example to the frame 82 and in particular to the frame 823, as shown in FIG. 3, this box 16 being itself even connected by another pipe 14 (shown in FIG. 9) to the flange 15, this other pipe 14 passing for example outside the fourth end part 62 and outside the frame 82, to prevent the line 14 from being trapped by moving parts of the displacement system 13.

The repair unit 1 may include an automatic control station, which may be present and installed in the cabin 31 or the like. This control station makes it possible to control the movements of the spreading assembly 4 between one and the other of the first extension position and of the second storage position and / or between one and the other. the immobilized position and the disengaged position. The control station may for this purpose comprise a display and / or control buttons and / or a control lever, for example a handle with monodirectional or multidirectional movement relative to a base and / or a touchscreen control, and /Or other. The control station, when located in the cabin 31, allows the user therein to control the movement of the head support member 6 in direct vision.

Of course, the embodiments described above can be combined with one another or be provided independently of one another.

Thus, the disengageable locking system 12 and the displacement system 13 can be combined with one another, as shown by way of example in FIG. 3.

The disengageable locking system 12 can be provided without the displacement system 13.

The displacement system 13 can also be provided without the disengageable locking system 12, as shown in FIGS. 11, 12 and 15.

In the embodiment shown in FIGS. 11 and 12, the second end part 52 is fixed to the support 521 fixed to the third end part 61.

The invention also relates to a method for spreading gravel and binder, implemented by the spreading assembly 4, and / or by the disengageable locking system 12 and / or by the displacement system 13, described below. below.

Claims (20)

1. A unit (1) for repairing a roadway, comprising a frame (2), on which are mounted a container (3) for storing gravel and a tank (4a) for storing binder and comprising a front side (21 ) and a rear side (22), the unit (1) comprising on the rear side a ramp (31) for distributing gravel and a ramp (32) for spreading the binder, which extend at least over a determined width comprising the rear side (22), characterized in that it further comprises a spreading assembly (4), making it possible to spread in a targeted manner gravel and binder in an area (Z) of the roadway, located in front of the front side (21) and / or located laterally with respect to the front side (21) and the rear side (22), the spreading assembly (4) comprising at least a first member (5) for deployment towards the exterior, movably mounted on the chassis (2), the first member comprising a first end portion (51) connected to the chassis (2) and a second end part (52) distant from the first end part (51), the first member (5) deploying towards the outside being able to occupy a first position of extension relative to the frame (2), in which the second end part (52) is situated above said zone (Z), the spreading assembly (4) comprising a second support member (6) serving supporting a head (7) for removing gravel and binder, the second support member (6) comprising a third end portion (61) distant from a fourth end portion (62) on which the head (7), the third end part (61) being connected to the second end part (52), the spreading assembly (4) comprising at least one conduit (8) and means (9) conveying gravel in the conduit (8) to bring gravel from the storage container (3) to the t head (7), the spreading assembly (4) further comprising at least one pipe (10) going from the tank (4a) to the head (7) and at least one device (11) for bringing the binder into the pipe (10) from the tank (4a) to the head (7). 2. Unit according to claim 1, characterized in that the spreading assembly (4) comprising a disengageable locking system (12) between the second end part (52) and the end end part (61) , the disengageable locking system (12) being able to occupy an immobilization position of the third end part (61) relative to the second end part (52) and a declutching position, in which the third end part (61) is suspended from the second end part (52) and is free to be moved according to at least one degree of freedom deviating from the vertical within a determined range of movement . 3. Unit according to claim 2, characterized in that in the disengaged position, the third end part (61) is free to be moved according to at least one degree of freedom in rotation deviating from the vertical at within the determined range of motion. 4. Unit according to claim 2, characterized in that in the disengaged position, the third end part (61) is free to be moved along a connection of the ball or gimbal type to have at least two degrees of freedom in rotation deviating from the vertical within the determined range of motion. 5. Unit according to any one of the preceding claims, characterized in that the third end part (61) comprises at least one articulation (621a, 621b, 623a, 623b) connecting it according to at least one degree of freedom to the second end part (52). 6. Unit according to claim 5, characterized in that the disengageable locking system (12) comprises a clamp (120) fixed to the second end part (52), the clamp (120) comprising a first jaw (121) and a second jaw (122) movable relative to the first jaw (121), the jaws (121, 122) surrounding the third end portion (61) remote from the joint (621a, 621b, 623a, 623b) , the jaws (121, 122) being brought into contact with the third end part (61) so as to prevent the movement of the third end part (61) deviating from the vertical with respect to the second part (52) end in the immobilized position, the jaws (121, 122) being spaced from the third end portion (61) to allow movement of the third end portion (61) deviating from vertical to the second part (5 2) end inside the determined range of movement in the disengaged position. 7. Unit according to claim 6, characterized in that the spreading assembly (4) comprises at least one element (123) for controlling the movement of the jaws (121, 122) between one and the other of the immobilization position and declutching position. 8. Unit according to any one of the preceding claims, characterized in that the second member (6) comprises a connecting element (124) located at a distance from the third end part (61), the member (124) link being able to be connected to a removable handlebar (G). 9. Unit according to any one of the preceding claims, characterized in that the head (7) for removing the gravel and the binder comprises an opening (71) for projecting the gravel and the binder having a predetermined two-dimensional extent in which is located a central point (72) of the opening (71), the spreading assembly (4) comprising a system (13) of displacement at a predetermined constant speed from the central point (72) of the projection opening (71) gravel and binder along a predetermined displacement path (73) relative to the fourth end portion (62). 10. Unit according to claim 9, characterized in that the conduit (8) ends with the head (7), the fourth end portion (62) comprises around the conduit (8) a frame (82) on which the displacement system (13) is mounted and with respect to which the displacement system (13) guides the conduit (8) and the central point (72) along the predetermined displacement path (73). 11. Unit according to claim 10, characterized in that the second support member (6) comprises a middle part (63), connecting the third end part (61) to the fourth end part (62), l frame (82) comprises three uprights (82a, 82b, 82c) distant from each other, having respectively three fifth parts (821a, 821b, 821c) end fixed to the middle part (63) and three sixths end parts (822a, 822b, 822c) arranged in a triangle and connected to each other by a frame (823, 823a, 823b, 823c) through which the conduit (8) passes, the displacement system (13) being mounted on the frame (823, 823a, 823b, 823c) and / or on the sixth end parts (822a, 822b, 822c). 12. Unit according to any one of claims 9 to 11, characterized in that the displacement system (13) is arranged to move the central point (72) of the opening (71) for projecting the gravel and the following binder the predetermined movement path (73) located at a distance from a vertical (74) relative to the fourth end part (62). 13. Unit according to any one of claims 9 to 12, characterized in that the movement system (13) is arranged to move the central point (72) of the projection opening of the gravel and the binder along the path ( 73) of predetermined displacement surrounding a vertical (74) relative to the fourth end portion (62). 14. Unit according to any one of claims 9 to 13, characterized in that the movement system (13) is arranged to move the central point (72) of the opening (71) of projection of the gravel and the following binder the trajectory (73) of predetermined circular movement relative to the fourth end portion (62). 15. Unit according to any one of claims 9 to 14, characterized in that the displacement system (13) comprises a guide (75) for driving the head (7), at least one shaft (76a, 76b, 76c), which is rotatably mounted about an axis (77a, 77b, 77c) of rotation on the fourth end part (62) and which comprises an eccentric pin (78a, 78b, 78c) located at a distance from the axis (77a, 77b, 77c), connecting means (79a, 79b, 79c) for connecting the eccentric pin (78a, 78b, 78c) to the guide (75) and means (80a, 80b, 80c, 81) d drive in rotation of the shaft (76a, 76b, 76c) around the axis (77a, 77b, 77c). 16. Unit according to any one of claims 9 to 15, characterized in that the displacement system (13) comprises a guide (75) for driving the head (7), three shafts (76a, 76b, 76c) , which are rotatably mounted around respectively three parallel axes (77a, 77b, 77c) of rotation and arranged in a triangle on the fourth end part (62) and which respectively comprise three eccentric pins (78a, 78b, 78c) located at distance from each respective axis (77a, 77b, 77c), connecting means (79a, 79b, 79c) for connecting the pins 5 eccentrics (78a, 78b, 78c) to the guide (75) and means (80a, 80b, 80c, 81) for rotating the shaft (76a, 76b, 76c) around the axis (77a, 77b, 77c). 17. Unit according to claims 11 and 16 taken together, characterized in that the frame (823, 823a, 823b, 823c) is of general triangular shape having three vertices (824a, 824b, 824c) located respectively near the three sixths 10 end parts (822a, 822b, 822c), the three shafts (76a, 76b, 76c) being rotatably mounted on the three vertices (824a, 824b, 824c) respectively. 18. Unit according to any one of claims 15 to 17, characterized in that the connecting means (79a, 79b, 79c) comprise at least one link (79a, 79b, 79c). 15 19. Unit according to any one of claims 15 to 18, characterized in that the guide (75) is applied against the conduit (8) ending with the head (7). 20. Self-propelled mobile carrying machine, used for making a floor, comprising the unit (1) for repairing the floor according to any one of the preceding claims and wheels (23) for rolling on the 2 0 roadway, rotatably mounted under the chassis (2), the chassis (2) being movable on the roadway in a direction of advance from the rear to the front or in the opposite direction. 1/14