EP3693512A1 - Lorry with tilting bucket and on-board system for humidification of tracks - Google Patents

Abstract

The subject of the invention is a tipping bucket (2) comprising an on-board system for humidifying the tracks (3) comprising: at least one box (4) formed on the outer face of the bottom of the bucket (2) and in communication between fluid with the interior of the bucket (2) through a respective opening (5) formed through the bottom surface of the bucket (2); fluid projection means fitted to the at least one box (4); closure means (9) arranged in the at least one box (4) and controlled by a control device (10) to close or not the respective opening (5), the control device (10) being configured to regulate the flow of a fluid contained in the bucket (2) to the fluid projection means via the closure means (9).

Description

The present invention relates to the field of dust removal in a quarry or mine, and relates more particularly to a tipping body comprising an on-board track humidification system, to a truck fitted with the latter and to an adaptation method. of a tipper.

When moving a quarry or mine machine, such as a dumper or dumper, on quarry or mine tracks, dust particles are suspended in the air, creating clouds of particles, which can be dangerous for the health of the personnel of the quarry or the mine and can create the risk of accidents linked to the poor visibility caused by the circulation of machines on the tracks. Thus, it is useful to moisten the tracks of the quarry or mine during the circulation of machinery in order to limit these risks.

An existing solution consists in fixing a tank system on the front bumper of the vehicle so that said system discharges water onto the runway when the vehicle is moving. However, this solution is not compact and the high weight of the tank system can cause damage to the bumper of the machine.

The French patent application FR2730177A1 discloses a dust abatement device on board public works or construction vehicles, said device comprising a water tank connected to nozzles respectively arranged at the level of the vehicle wheels. However, a water tank needs to be carried by the vehicle, the water tank being in most cases disposed near the engine hood of the vehicle, which makes this solution not compact and poses a problem in the event of water tank leak on the engine cover.

The French patent application FR3026376A1 discloses a dump truck equipped with an on-board track humidification system in in which the water used for humidifying the tracks is stored in the bucket, which makes the solution more compact, then is projected onto the mud flaps of the truck's wheels through holes formed in the bottom of the tipper, which makes it possible to humidify the tracks when the truck is moving. The on-board track humidification system of this existing dump truck comprises a formwork, formed on the bottom of the dumpster and having one or more grids intended to allow water stored in the dumpster to pass, said formwork allowing the material loaded in the truck not to obstruct the holes formed in the bottom of the bucket in order to ensure the proper flow of water. However, this on-board track humidification system is bulky and complex to implement. Indeed, the formwork has a large volume, which reduces the useful volume of the truck body. In addition, the formwork made of anti-abrasion steel has a large weight and must be welded to the bucket, which makes the installation of the on-board humidification system on the dump truck tedious.

The present invention aims to resolve the drawbacks of the prior state of the art, by proposing a dump body, intended to equip a dump truck, comprising an on-board system for humidifying the tracks comprising at least one box formed on the face. exterior of the bottom of the bucket in fluid communication with the interior of the bucket by means of a respective opening formed through the surface of the bottom of the bucket, the at least one box being equipped with projection means of fluid and means for closing the opening. The on-board track humidification system thus allows tracks to be humidified and dust to be suppressed, while being less bulky and less complex to implement and install.

The present invention also makes it possible to adapt this solution for humidifying the tracks to all tipping skips for quarry equipment of the dumper or dumper type without major modification of the structure and without mechanical inconvenience or visual inconvenience.

The subject of the present invention is therefore a dump body comprising an on-board track humidification system, intended to equip a tipping dump truck, characterized in that the on-board track humidification system comprises: at least one box formed on the face the bottom of the bucket in the vicinity of the lowest point of the bottom of the bucket, each box being in fluid communication with the interior of the bucket via a respective opening formed through the surface of the bottom of the bucket. the bucket in the vicinity of the lowest point of the bottom of the bucket and opening into the respective box; fluid projection means fitted to the at least one box and in fluid communication with the respective opening through the interior of the at least one box; means for closing the opening arranged in the at least one box and controlled by a control device to close or not the respective opening, the control device of the on-board track humidification system being configured to regulate the flow of a fluid contained in the bucket towards the means for spraying the fluid via the means for closing the opening.

Thus, the on-board track humidification system allows tracks to be humidified and dust to be suppressed, while being less bulky and less complex to implement and install compared to those of the prior state of the art.

The dump body according to the present invention, installed on a dump truck, makes it possible to humidify the tracks during the empty movement of the truck on the tracks, and therefore to carry out dust suppression.

As the water used to moisten the tracks is stored in the bottom of the dumpster, the truck does not need to carry an additional water tank, making the solution compact.

The tipping body also does not need to carry a formwork arranged in the bottom of the body with an anti-clogging system, which makes it possible to maintain the volume of material that can be transported by the body, and which also allows to simplify the track humidification system compared to existing ones.

So-called “dirty” water in the present application, that is to say not originating from the network but originating from recovered water, originating for example from the operation of the quarry or mine, can thus be dumped and stored in the bucket when it is empty, then this dirty water is dumped, when the vehicle moves, on the tracks by means of the opening or openings formed in the bottom of the skip and then of at least one box equipped with means for spraying fluid.

The quick and easy filling of the bucket with dirty water can be carried out either when the truck is stopped at the primary crusher, or when returning empty, the quality of the water not being decisive and can, for example, coming from a quarry water reserve, water filtration or a connection to the water network thus being unnecessary.

Water from other sources (eg network) can of course also be used within the scope of the present invention.

Note that, when the dump body is a flat-bottomed body, then the lowest point of the bottom of the body is the entire body of the body, and, when the dump body is an inclined-bottom body , then the lowest point of the bottom of the bucket is the lowest point in the bottom of the bucket in the normal horizontal position of use of the bucket.

The fluid communication between the interior of the bucket and the at least one box is preferably a gravity fluid communication, but could also be a fluid communication assisted by pumping means, without deviating from the fluid. within the scope of the present invention.

The means for closing the opening make it possible to close the opening (s) in the bottom of the bucket when the bucket is transporting quarry or mine material so that said material cannot enter the box or boxes. The means for closing the opening can also close the opening (s) when the bucket is transporting water but the truck driver does not wish to use the track humidification system. When the bucket is carrying water and the driver wishes to use the track humidification system, he then controls the control device so that the means for closing the opening no longer obstruct the one or more openings in the bottom of the dumpster in order to allow the flow of water in the box (s) to the respective fluid spraying means, which causes water to flow on the tracks on which the truck travels so as to achieve dust suppression and blocking of dust flights.

Thus, by regulating the flow of a fluid, is meant the control of the closure means to open or close the opening in the bucket in order to allow or prevent the flow of the fluid towards the fluid projection means.

According to a particular characteristic of the present invention, the fluid projection means consist, for each box, of at least one water cannon placed on the respective box.

Thus, the water cannons make it possible to project the water coming from the bucket on the tracks (or on the mud flaps of the wheels of the truck, or directly on the wheels of the truck) on which the truck moves, which allows to direct the projection of the water and to create an even spray of water.

Water cannons can also be steerable.

According to a particular characteristic of the present invention, each water cannon has a removable outlet nozzle to adapt the flow rate of the water cannon.

Thus, each water cannon advantageously consists of a cannon body and a nozzle / outlet head fixed to the cannon body in a removable manner, for example by a fireman's connection making it possible to easily change the outlet orifice of the outlet nozzle.

The outlet diameter of the water cannons can thus be modified as a function of the watering needs of the tracks, the nominal diameter of the water passage possibly being, for example, 80 mm or 100 mm.

According to a particular characteristic of the present invention, for each box, the means for closing the opening comprise at least one buffer, preferably of rubber, capable of sealingly closing the respective opening, said at least one buffer being movable using at least one hydraulic cylinder controlled by the control device.

Thus, the buffer (s) make it possible to seal off the opening (s) in the bottom of the bucket when the bucket is transporting a quarry or mine material so that said material cannot enter the bucket (s). caissons. The buffer (s) also make it possible to seal the opening (s) in a sealed manner when the bucket is carrying water but the truck driver does not wish to use the track humidification system. When the bucket is carrying water and the driver wishes to use the track humidification system, he then controls the at least one hydraulic cylinder through the control device so that the buffer (s) do not '' more obstruct the opening (s) in the bottom of the bucket in order to allow the flow of water in the box (s) towards the fluid projection means, which causes a flow of water on the tracks on which the moves the truck in such a way as to carry out dust suppression and blocking of dust flights.

The buffer (s) are preferably made of rubber in order to guarantee the seal, but could also be made of steel associated with a seal, of polyurethane or of any other material suitable for sealing the opening, without depart from the scope of the present invention.

According to a particular characteristic of the present invention, for each box, the means for closing the opening further comprise a link carrying the at least one buffer associated with the respective box, said link being movable, using the 'at least one hydraulic cylinder associated with the respective box, between a closed state in which the at least one buffer associated with the respective box closes the respective opening and a non-closed state in which the at least one buffer associated with the box respective does not close the respective opening.

Thus, the at least one hydraulic cylinder, controlled by the control device, makes it possible to move the rod carrying the at least one buffer in order to close or not the respective opening in the bottom of the bucket.

According to a particular characteristic of the present invention, the tipping bucket further comprises a pneumatic anti-clogging system arranged inside the at least one box and controlled by the control device, so as to unclog each opening formed through the bottom surface of the dumpster.

Thus, the anti-clogging system makes it possible to eject pebbles and mud obstructing the passage of water through the opening (s) formed in the bottom of the bucket, which allows water to penetrate well into the or the boxes when the empty container is subsequently filled with dirty water.

According to a particular characteristic of the present invention, the pneumatic anti-clogging system comprises one or more air blowing nozzles.

Thus, the air blowing nozzles (preferably compressed air) are oriented towards the opening (s) formed in the bottom of the bucket, and make it possible to unclog the latter using the blown air. The air blowing nozzles are preferably connected to a compressor with an air reserve which is itself controlled by the control device.

The air blowing nozzles are preferably arranged on one or more ramps of nozzles arranged inside the at least one box.

According to a particular characteristic of the present invention, each opening is formed by one or more through holes formed in the bottom of the bucket.

Preferably, a first group of through holes is formed on the left side of the truck between the front and rear wheels of the truck, and a second group of through holes is formed on the right side of the truck between the front and rear wheels of the truck. A plurality of holes (eg, three) in each group is preferred but a single hole having an area equivalent to the plurality of holes is also within the scope of the invention.

According to a particular characteristic of the present invention, the tipping body further comprises a double bottom arranged at the bottom of the body at the level of the front end of the body, said double bottom not covering each opening formed through the surface of the bottom. of the dumpster.

By front end of the body is meant the end of the body facing the cab of the truck.

Thus, the double bottom makes it possible to modify the low points of the bucket to avoid water retention in the bottom of the bucket, the bucket thus emptying 100%. The double bottom thus makes it possible to facilitate the flow of water through the opening (s) formed in the bottom of the bucket.

The present invention also relates to a truck equipped with a tipping body as described above, characterized in that the at least one box of the on-board track humidification system is arranged in a centered manner with respect to the width of the dump body.

This centered arrangement of the at least one box is particularly suitable for articulated type dumpers.

It should be noted that the at least one box could also be arranged at any other location over the width of the dump body, without departing from the scope of the present invention.

The present invention also relates to a truck equipped with a tipping body as described above, characterized in that the on-board system for humidifying the tracks of the tipping body comprises two boxes formed on the outer face of the bottom of the body. the bucket in the vicinity of the lowest point of the bottom of the bucket between the front wheels and the rear wheels of the truck, one of the two boxes being arranged in alignment with the left wheels of the truck and the other of the two boxes being arranged in alignment with the right wheels of the truck.

Thus, the use of two boxes, namely a box in the alignment of the right wheels and a box in the alignment of the left wheels, makes it possible to improve the efficiency of dust suppression.

It should be noted that the dump truck according to the present invention can be a quarry machine, a mine machine, an earth moving machine or the like.

According to a particular characteristic of the present invention, each water cannon is directed towards a mud flap of the front or rear wheel set of the truck.

Thus, the water contained in the bucket is projected onto the mud flaps of the front or rear wheels of the truck by the water cannons, which makes it possible to create two uniform sprays of water that flow onto the track the truck is traveling on, without getting the wheels of the truck wet.

According to a particular characteristic of the present invention, each water cannon is directed towards a deflector mounted under the skip or on the truck or directly on the water cannon, the deflector being arranged perpendicular to the water jet of the water cannon.

Thus, the water contained in the bucket is projected onto the deflectors by the water cannons, which makes it possible to create two uniform sprays of water which flow onto the track on which the truck is traveling, without wetting the wheels of the truck.

The deflector may preferably be carp tail or spoon shaped.

The deflector can be attached directly to the water cannon, suspended cantilevered in front of the outlet of the latter.

According to a particular characteristic of the present invention, the device for controlling the means for closing the opening is configured to be controlled from the cab of the truck.

Thus, the truck driver can control the means for closing the opening from his cab via the control device, which allows the truck driver to open the openings in the bottom of the body only when this is necessary (as needed) and / or to close the openings in the bottom of the body when, for example, the truck is stationary.

The hydraulic cylinders are preferably actuated by an independent electro-hydraulic unit, the management of which is done by the control device, for example of the remote control type, installed inside the cab of the truck.

The present invention further relates to a method of adapting a tipping body to obtain a tipping body as described above, characterized in that it comprises the steps consisting in: making at least one bore in the bottom of the bucket in order to make at least one opening in the vicinity of the lowest point of the bottom of the bucket; install at least one box on the outer face of the bottom of the bucket respectively facing the at least one opening made in the bottom of the bucket, fluid spraying means fitted to the at least one box, means for closing the opening being arranged in the at least one box; and connecting the means for closing the opening to a control device located on the bucket or at a distance from it.

Thus, the humidification equipment can easily be adapted to an existing dump body equipping a rigid dumper or rigid or articulated dumper type truck without major modification of the structure and without mechanical inconvenience or visual inconvenience.

The subject of the invention is also an on-board track humidification system kit as described above, intended to be mounted on a dump truck of the dumper or dumper type, said body being previously drilled in the vicinity of the most point. bottom of the bottom of the bucket to allow fluid communication between the bottom of the bucket and the at least one box mounted under the bucket.

In order to better illustrate the subject of the present invention, a preferred embodiment will be described below, by way of illustration and not by way of limitation, with reference to the accompanying drawings.

• [Fig. 1] est une vue de côté d'un camion équipé d'une benne basculante selon une première variante de la présente invention ;
• [Fig. 2] est une vue en perspective d'une benne basculante selon une seconde variante de la présente invention ;
• [Fig. 3] est une vue en coupe de la benne basculante de la Figure 2 lorsque le système embarqué d'humidification des pistes est installé sous la benne basculante ;
• [Fig. 4] est une vue éclatée du système embarqué d'humidification des pistes de la benne basculante de la Figure 2 ;
• [Fig. 5] est une vue en coupe longitudinale du système embarqué d'humidification des pistes de la benne basculante de la Figure 2 lorsque les moyens d'obturation de l'ouverture n'obturent pas l'ouverture formée dans le fond de la benne ; et
• [Fig. 6] est une vue en coupe transversale du système embarqué d'humidification des pistes de la benne basculante de la Figure 2 lorsque les moyens d'obturation de l'ouverture obturent l'ouverture formée dans le fond de la benne.

On these drawings:

• [ Fig. 1 ] is a side view of a truck equipped with a dump body according to a first variant of the present invention;
• [ Fig. 2 ] is a perspective view of a dump body according to a second variant of the present invention;
• [ Fig. 3 ] is a sectional view of the dump body of the Figure 2 when the on-board track humidification system is installed under the dump body;
• [ Fig. 4 ] is an exploded view of the on-board humidification system for the dump body tracks of the Figure 2 ;
• [ Fig. 5 ] is a longitudinal sectional view of the on-board system for humidifying the tracks of the tipper body of the Figure 2 when the means of closing the opening do not close the opening formed in the bottom of the bucket; and
• [ Fig. 6 ] is a cross-sectional view of the on-board system for humidifying the tracks of the dump body of the Figure 2 when the means for closing the opening close the opening formed in the bottom of the bucket.

If we refer to the Figure 1 , it can be seen that there is shown a truck 1 equipped with a dump body 2 according to a first variant of the preferred embodiment of the present invention.

The truck 1 is equipped with the tipping body 2 which is able to be tilted into a raised position in order to unload a loaded material contained in the body 2 towards the rear of the truck 1.

The truck 1 can, for example, be a quarry machine, a mine machine or an earth moving machine of the rigid dumper or rigid or articulated dumper type.

The dump body 2 comprises an on-board track humidification system 3 so that the truck 1 can humidify the tracks on which it travels in the quarry or the mine, in order to carry out dust suppression and blocking of the take-offs of dust.

The on-board track humidification system 3 comprises at least one box 4 formed on the outer face of the bottom of the bucket 2 in the vicinity of the lowest point of the bottom of the bucket 2.

Note that, when the dump body 2 is a flat-bottomed body, then the lowest point of the bottom of the body 2 is the entire bottom of the body 2, and, when the dump body 2 is a tipper with inclined bottom, as is the case with the Figure 1 , then the lowest point of the bottom of the bucket 2 is the lowest point in the bottom of the bucket 2 in the normal horizontal position of use of the bucket 2 as shown in Figure 1 .

Preferably, the on-board track humidification system 3 comprises two boxes 4 formed on the outer face of the bottom of the bucket 2 in the vicinity of the lowest point of the bottom of the bucket 2 between the front wheels 1a and the rear wheels 1b. of the truck 1, one of the two boxes 4 being arranged in alignment of the left wheel set of truck 1 and the other of the two boxes 4 being arranged in alignment with the right wheel set of truck 1.

Each box 4 is in fluid communication with the interior of the bucket 2 via a respective opening 5 formed through the surface of the bottom of the bucket 2 in the vicinity of the lowest point of the bottom of the bucket 2 and opening into the respective box 4.

The on-board system for humidifying the tracks 3 further comprises, on each box 4, a water cannon 6 as means for spraying fluid, said water cannon 6 being in fluid communication with the respective opening 5 via the 'inside the box 4. The water cannons 6 thus make it possible to orient the projection of the fluid and to create a uniform shower of fluid.

According to the first variant of the invention, each water cannon 6 is directed towards a mud flap 7 of the front wheel set 1a of the truck 1. Thus, the water 8 contained in the bottom of the bucket 2 can be projected on the mud flaps 7 of the front wheels 1a of the truck 1 by the water cannons 6, which makes it possible to create two uniform sprays of water which flow onto the track on which the truck 1 rolls, without wetting the wheels front 1a of truck 1.

It should be noted that each water cannon 6 could also be directed towards a mud flap of the rear wheelset 1b of the truck 1, without departing from the scope of the present invention. Each water cannon 6 could also project the water directly onto the front wheels 1a or rear 1b of the truck 1, without departing from the scope of the present invention.

The on-board system for humidifying the tracks 3 further comprises, for each box 4, means 9 for closing off the opening 5, said closing means 9 being arranged inside the respective box 4 and controlled by a control device 10, to close or not the respective opening 5.

The control device 10 is configured to regulate the flow of the water 8 contained in the bucket 2 towards the water cannons 6 by means of the closure means 9 which will be described in more detail below.

The control device 10 is placed inside the cab 1c of the truck 1. The driver of the truck 1 can thus control the closure means 9 from the cab 1c by means of the control device. 10, which allows the truck driver to open the openings 5 in the bottom of the body 2 only when necessary (as needed) and close the openings 5 in the bottom of the body 2 when, for example , truck 1 is stationary.

The water 8 contained in the bucket 2 can be so-called “dirty” water not coming from the network but coming from recovery water, for example coming from the operation of the quarry or mine. The dirty water 8 can be discharged and stored in the bucket 2 when the latter is empty, then this dirty water 8 can be discharged, when the truck 1 is moving, on the tracks via the openings 5 formed in the bottom of hopper 2 then water cannons 6.

The quick and easy filling of the bucket 2 with dirty water 8 can be carried out either when stopping at the primary crusher of truck 1, or when returning empty, the quality of the water 8 not being decisive and may, for example, come from a quarry water reserve, water filtration or a connection to the water network thus being unnecessary.

Water 8 from other sources (eg from the network) can of course also be used within the scope of the present invention.

The fluid communication between the interior of the bucket 2 and the boxes 4 is a fluid communication by gravity, but could also be a fluid communication assisted by a pumping means, without departing from the scope of the present invention.

The closure means 9 make it possible to close the openings 5 in the bottom of the bucket 2 when the bucket 2 transports a quarry or mine material so that said material cannot enter the caissons 4. The closure means 9 allow also to close the openings 5 when the bucket 2 transports water 8 but the driver of the truck 1 does not wish to use the on-board track humidification system 3. Finally, when the bucket 2 transports water 8 and that the driver wishes to use the on-board system for humidifying the tracks 3, he then controls the control device 10 so that the closure means 9 no longer obstruct the openings 5 in the bottom of the bucket 2 in order to allow the flow of water 8 in the caissons 4 towards the water cannons 6, which causes a flow of water 8 on the mud flaps 7 then on the tracks on which the truck 1 moves, which makes it possible to reduce dust.

If we refer to the Figure 2 and at the Figure 3 , it can be seen that there is shown a dump body 2 according to a second variant of the preferred embodiment of the present invention.

The common elements between the first variant of the invention on the Figure 1 and this second variant of the invention bear the same reference numeral and will not be described in more detail here when they are of identical structures.

To the Figure 2 , the on-board humidification system for tracks 3 is shown not installed under the bucket 2, while at the Figure 3 , the on-board track 3 humidification system is shown installed under the skip 2.

The dump body 2, which is V-bottom, has two openings 5 formed through the surface of the bottom of the body 2 in the vicinity of the lowest point of the bottom of the body 2, one of the two openings 5 being disposed in the alignment of the left wheels of the truck 1 on which the dump body 2 is installed, the other of the two openings 5 being arranged in the alignment of the right wheels of said truck 1.

The on-board track humidification system 3 comprises two boxes 4 formed on the outer face of the bottom of the bucket 2 below the two openings 5, respectively.

A water cannon 6 is mounted on each casing 4, said water cannon 6 being in fluid communication with the respective opening 5 through the interior of casing 4.

According to the second variant of the preferred embodiment of the invention, each water cannon 6 is directed towards a deflector 11 mounted under the bucket 2 facing the water jet from the water cannon 6. The water 8 contained in the bucket 2 is thus projected onto the deflectors 11 by the water cannons 6, which makes it possible to create two uniform sprays of water which flow onto the track on which the truck 1 rolls.

Each deflector 11 consists of a vertical plate, but could also be carp tail or spoon shaped, without departing from the scope of the present invention.

It should be noted that each deflector 11 could also be fixed directly on the associated water cannon 6, suspended in cantilever opposite the outlet thereof, without departing from the scope of the present invention.

The closure means 9 and the water cannons 6 of the on-board track humidification system 3 will be described in more detail at Figure 4 .

The tipping bucket 2 further comprises a double bottom 12 disposed at the bottom of the bucket 2 at the front end of the bucket 2 (that is to say, at the level of the end of the bucket 2 facing towards the cab 1c of the truck 1), said double bottom 12 being mounted on several triangular supports 13 fixed to the bottom of the skip 2, the shape of the double bottom 12 being designed not to cover the openings 5 formed through the surface of the bottom of the bucket 2.

The double bottom 12 thus makes it possible to modify the low points of the bucket 2 to avoid water retention in the bottom of the bucket 2, the bucket 2 thus emptying 100%. The double bottom 12 thus makes it possible to facilitate the flow of water 8 through the openings 5.

If we refer to the Figure 4 , it can be seen that there is shown the on-board system for humidifying the tracks 3 according to the present invention.

For each opening 5 (the openings 5 being shown on the Figures 1 , 2 and 3 previous ones, but not shown on the Figure 4 ), the on-board track humidification system 3 comprises a box 4 formed of a rectangular frame 4a under which is fixed a lower wall 4b in the form of a funnel which widens towards a cylindrical outlet 4c on which can be fixed a water cannon 6 using screws 4d.

The box 4 further comprises an upper plate 4e welded under the bucket 2 and on which is fixed the rectangular frame 4a, an opening being formed in said upper plate 4e above which is fixed a fluid inlet plate 4f the shape of which is complementary to that of the associated opening 5 in the bottom of the bucket 2. Thus, when the box 4 is installed under the bucket 2, the fluid inlet plate 4f fits into the associated opening 5 of the bucket 2, the upper plate 4e then being pressed against and welded against the outer surface of the bottom of the bucket 2.

Three through holes 4g are formed in the fluid inlet plate 4f, said through holes 4g allowing the passage of water 8 from the bottom of the bucket 2 inside the box 4.

Note that the fluid inlet plate 4f could also include any number of through holes 4g, without departing from the scope of the present invention.

The water cannon 6 comprises a cannon body 6a capable of being fixed to the cylindrical outlet 4c of the box 4 using the screws 4d.

The water cannon 6 further comprises an outlet nozzle 6b attached to the cannon body 6a removably by means of a fireman's connection 6c, which makes it possible to easily change the outlet nozzle 6b to adapt the flow rate of the cannon. water 6.

The outlet diameter of the water cannon 6 can thus be modified as a function of the watering needs of the tracks, the nominal diameter of the water passage possibly being, for example, 80 mm or 100 mm.

It should be noted that the water cannon 6 could also be orientable, without departing from the scope of the present invention.

The closure means 9 of the on-board system for humidifying the tracks 3 comprise three rubber pads arranged inside the box 4 and capable of sealing off the three through holes 4g formed in the fluid inlet plate 4f embedded in the associated opening 5 of the skip 2.

The number of buffers 14 corresponds to the number of through holes 4g formed in the fluid inlet plate 4f.

The three buffers 14 are fixed on a support 15 rotatably connected to a system of links 16 itself rotatably connected to two hydraulic jacks 17 controlled by the control device 10 located in the cab 1c of the truck 1.

It should be noted that the linkage system 16 could also be connected to any number of hydraulic jacks 17, without departing from the scope of the present invention.

Each hydraulic cylinder 17 consists of a fixed cylinder 17b and a movable rod 17a, the end of the movable rod 17a being rotatably mounted on the linkage system 16, and the fixed cylinder 17b being fixed under the upper plate 4th using screws 17c.

All the elements of the closure means 9 are arranged inside the box 4 with the exception of the fixed cylinders 17b of the hydraulic jacks 17 which are placed outside the box 4. The rectangular frame 4a of the box 4 comprises two lateral openings 18 which are crossed by the two movable rods 17a of the hydraulic cylinders 17, respectively. A seal 19 is disposed in each side opening 18 of the casing 4 so as to prevent water from leaking through the latter.

It should be noted that all of the hydraulic jacks 17 could also be placed inside the box 4, without departing from the scope of the present invention.

Pipes 20 are connected to the fixed cylinders 17b of the hydraulic cylinders 17, these pipes 20 being able to transport oil under pressure to allow the movement of the movable rods 17a of the hydraulic cylinders 17.

The free ends of the pipes 20 are mounted in a plate 21 capable of being fixed under the dump body 2 or on the chassis of the truck 1, said plate 21 serving as a connection interface for connecting said free ends of the pipes 20 to a power unit. -hydraulic which is managed by the control device 10.

The two hydraulic cylinders 17, under the control of the control device 10, thus make it possible to move the rod 16, which causes the displacement of the buffers 14. The rod 16 is movable, using the two hydraulic cylinders 17, between a closed state in which the movable rods 17a of the hydraulic cylinders 17 are retracted and the buffers 14 close the through holes 4g and a non-closed state in which the movable rods 17a hydraulic jacks 17 are deployed and the buffers 14 do not block the through holes 4g.

The buffers 14 thus make it possible to seal off the through holes 4g in the bottom of the bucket 2 in a sealed manner when the bucket 2 is transporting a quarry or mine material so that said material cannot enter the box 4. The buffers 14 allow also seal the through holes 4g in the bottom of the body 2 in a watertight manner when the body 2 is carrying water but the driver of the truck 1 does not wish to use the on-board track humidification system 3. When the bucket 2 transports water 8 and the driver wishes to use the on-board humidification system of the tracks 3, he then controls the hydraulic jacks 17 by means of the control device 10 so that the buffers 14 do not more obstruct the through holes 4g in the bottom of the bucket 2 in order to allow the flow of water 8 in the box 4 towards the water cannon 6, which causes a flow of water 8 on the tracks on which the move the cam ion 1 so as to achieve dust suppression and blocking of dust flights.

The buffers 14 are made of rubber in order to guarantee the seal, but could also be made of steel associated with a seal, polyurethane or any other material suitable for sealing the through holes 4g, without deviating from the within the scope of the present invention.

The on-board system for humidifying the tracks 3 could also comprise, without departing from the scope of the present invention, a pneumatic anti-clogging system arranged inside the box 4, controlled by the control device 10, and configured to unclog the through holes 4g so as to eject the stones and mud obstructing the passage of water 8 inside the box 4.

Such a pneumatic anti-clogging system can, for example, consist of one or more air blowing nozzles (preferably compressed air) oriented towards the through holes 4g, making it possible to unclog the latter using blown air, the air blowing nozzles being, preferably, connected to a compressor with air reserve itself controlled by the control device control 10, the air blowing nozzles being preferably arranged on one or more rows of nozzles arranged inside the box 4.

If we refer to the Figure 5 , it can be seen that there is shown the on-board humidification system of the tracks 3 in the non-blocking state.

In the non-closed state of the sealing means 9 of the on-board track humidification system 3, the control device 10 causes the hydraulic cylinders 17 to deploy their movable rods 17a, which causes the movement of the link system. 16 so that the pads 14 move away from the through holes 4g in the fluid inlet plate 4f. The buffers 14 then do not block the through holes 4g, which allows water 8 to flow inside the box 4 to the water cannon 6.

If we refer to the Figure 6 , it can be seen that there is represented the on-board system for humidifying the tracks 3 in the closed state.

In the closed state of the closure means 9 of the on-board track humidification system 3, the control device 10 causes the hydraulic cylinders 17 to retract their movable rods 17a, which causes the movement of the connecting rod system 16 such that the buffers 14 enter the through holes 4g of the fluid inlet plate 4f. The buffers 14 then close the through holes 4g, which makes it possible to prevent the flow of water 8 inside the box 4.

The invention also relates to a method of adapting a tipping body to obtain a tipping body 2 as described above, characterized in that it comprises the steps consisting in: making at least one hole in the bottom of the bucket in order to make at least one opening 5 in the vicinity of the lowest point of the bottom of the bucket 2; install at least one box 4 on the outer face of the bottom of the bucket 2 respectively facing the at least one opening 5 made in the bottom of the bucket 2, at least one water cannon 6 fitted to each box 4, means opening closure 9 being arranged in each box 4; and connecting the opening closure means 9 to a control device 10 located on the bucket 2 or at a distance from the latter.

The on-board track humidification system 3 can thus be easily adapted to an existing tipping body fitted to a dumper or tipper type truck without major modification of the structure and without mechanical or visual inconvenience.

The invention further relates to a kit comprising an on-board system for humidifying the tracks 3, intended to be mounted on a tipping body 2 of a truck 1 of the rigid dumper or rigid or articulated dumper type, said body 2 being previously drilled in the vicinity of the lowest point of the bottom of the bucket 2 to allow fluid communication between the bottom of the bucket 2 and at least one box 1 mounted under the bucket 2.

Claims (15)

Dump body (2) comprising an on-board track humidification system (3), intended to equip a dump truck (1), characterized in that the on-board track humidification system (3) comprises: at least a box (4) formed on the outer face of the bottom of the bucket (2) in the vicinity of the lowest point of the bottom of the bucket (2), each box (4) being in fluid communication with the interior of the bucket (2) via a respective opening (5) formed through the surface of the bottom of the bucket (2) in the vicinity of the lowest point of the bottom of the bucket (2) and opening into the box ( 4) respective; fluid projection means fitted to the at least one box (4) and in fluid communication with the respective opening (5) through the interior of the at least one box (4); means for closing the opening (9) arranged in the at least one box (4) and controlled by a control device (10) to close or not the respective opening (5), the control device ( 10) of the on-board track humidification system (3) being configured to regulate the flow of a fluid contained in the bucket (2) towards the fluid projection means via the closure means of the opening (9). Tipping skip (2) according to Claim 1, characterized in that the fluid projection means consist, for each box (4), of at least one water cannon (6) arranged on the respective box (4). Tipping bucket (2) according to Claim 2, characterized in that each water cannon (6) has a removable outlet nozzle (6b) to adapt the flow rate of the water cannon (6). Tipping skip (2) according to one of claims 1 to 3, characterized in that , for each box (4), the means for closing the opening (9) comprise at least one buffer (14), preferably made of rubber, capable of sealing off the respective opening (5), said at least one buffer (14) being movable using at least one hydraulic cylinder (17) controlled by the control device (10) ). Tipping body (2) according to Claim 4, characterized in that , for each box (4), the means for closing the opening (9) further comprise a link (16) carrying the at least one buffer (14) associated with the respective box (4), said link (16) being movable, with the aid of at least one hydraulic cylinder (17) associated with the respective box (4), enters a closed state in which the at least buffer (14) associated with the respective box (4) closes the respective opening (5) and a non-closed state in which the at least buffer (14) associated with the respective box (4) does not close not the respective opening (5). Tipping skip (2) according to one of claims 1 to 5, characterized in that it further comprises a pneumatic anti-clogging system arranged inside the at least one box (4) and controlled by the control device (10), so as to unclog each opening (5) formed through the surface of the bottom of the bucket (2). Tipping body (2) according to Claim 6, characterized in that the pneumatic anti-clogging system comprises one or more air blowing nozzles. Tipping bucket (2) according to one of claims 1 to 7, characterized in that each opening (5) is formed by one or more through holes (4g) formed in the bottom of the bucket (2). Tipping skip (2) according to one of claims 1 to 8, characterized in that it further comprises a double bottom (12) arranged at the bottom of the skip (2) at the front end of the skip (2), said double bottom (12) not covering each opening (5) formed through the surface of the bottom of the bucket (2). Truck (1) equipped with a tipping body (2) according to one of claims 1 to 9, characterized in that at least one box (4) of the on-board track humidification system (3) is arranged centered in relation to the width of the dump body (2). Truck (1) equipped with a tipping body (2) according to one of claims 1 to 9, characterized in that the on-board system for humidifying the tracks (3) of the tipping body (2) comprises two boxes (4) formed on the outer face of the bottom of the body (2) in the vicinity of the lowest point of the bottom of the body (2) between the front wheels (1a) and the rear wheels (1b) of the truck (1), one of the two boxes (4) being arranged in alignment with the left wheels of the truck (1) and the other of the two boxes (4) being arranged in alignment with the right wheels of the truck (1) ). Truck (1) according to Claim 10 or 11 in dependence on Claim 2, characterized in that each water cannon (6) is directed towards a mud flap (7) of the front (1a) or rear wheel set (1b) of the truck (1). Truck (1) according to claim 10 or 11 in dependence on claim 2, characterized in that each water cannon (6) is directed towards a deflector (11) mounted under the bucket (2) or on the truck (1 ) or directly on the water cannon (6), the deflector (11) being arranged perpendicular to the water jet from the water cannon (6). Truck (1) according to one of claims 10 to 13, characterized in that the control device (10) of the means for closing the opening (9) is configured to be controlled from the cab (1c) of the truck (1). Method of adapting a tipping body to obtain a tipping body (2) according to one of claims 1 to 9, characterized in that it comprises the steps of: making at least one hole in the bottom of the bucket (2) in order to make at least one opening (5) in the vicinity of the lowest point of the bottom of the bucket (2); install at least one box (4) on the outer face of the bottom of the bucket (2) respectively opposite the at least one opening (5) made in the bottom of the bucket (2), means for spraying fluid equipping the at least one box (4), means for closing off the opening (9) being arranged in the at least one box (4); and connecting the means for closing the opening (9) to a control device (10) located on the bucket (2) or at a distance therefrom.

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